Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP7108474B2 - Fever detection device and fever detection system - Google Patents
[go: Go Back, main page]

JP7108474B2 - Fever detection device and fever detection system - Google Patents

Fever detection device and fever detection system Download PDF

Info

Publication number
JP7108474B2
JP7108474B2 JP2018112815A JP2018112815A JP7108474B2 JP 7108474 B2 JP7108474 B2 JP 7108474B2 JP 2018112815 A JP2018112815 A JP 2018112815A JP 2018112815 A JP2018112815 A JP 2018112815A JP 7108474 B2 JP7108474 B2 JP 7108474B2
Authority
JP
Japan
Prior art keywords
detection
heat generation
feeder line
heat
resistance value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2018112815A
Other languages
Japanese (ja)
Other versions
JP2019215265A (en
Inventor
浩太郎 林
健太 長澤
信一 片山
盛実 山川
和寿 大澤
康利 遠藤
亮太 豊田
真歩 大石
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanwa Tekki Corp
Original Assignee
Sanwa Tekki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanwa Tekki Corp filed Critical Sanwa Tekki Corp
Priority to JP2018112815A priority Critical patent/JP7108474B2/en
Publication of JP2019215265A publication Critical patent/JP2019215265A/en
Application granted granted Critical
Publication of JP7108474B2 publication Critical patent/JP7108474B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Electric Cable Installation (AREA)

Description

この発明は、検知対象物に装着されてこの検知対象物の発熱を検知する発熱検知装置、及び検知対象物の発熱を検知する発熱検知システムに関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat detection device attached to a detection target to detect heat generation of the detection target, and a heat generation detection system for detecting heat generation of the detection target.

電気鉄道では、電気車に電力を供給するために、この電気車が走行する線路に沿って電線路(電車線路)が設けられており、き電変電所からこの電車線にき電線によって電力を供給している。電車線設備のセンシングを行うにあたり、急務となるのがき電線破断の未然発見である。き電線の破断の原因の多くは、圧縮管(電線接続管)内部の腐食によって電気抵抗が高くなり、圧縮管出口付近のより線が溶断するものである。そのため、圧縮管内部の異常によって発生する腐食による発熱をセンシングする手法が求められてきた。従来、電線や接続箇所などの発熱による異常の確認は、示温ラベルによる表示、通電時の赤外線カメラによる観察又は目視検査が行われていた。 In electric railways, in order to supply electric power to the electric cars, electric lines (contact lines) are installed along the tracks on which the electric cars run. are supplying. In conducting sensing of overhead contact line facilities, it is an urgent task to detect breakage of feeder lines before they occur. Many of the causes of breakage of feeder lines are that corrosion inside the compression tube (conduit connection tube) increases electrical resistance and melts the stranded wire near the outlet of the compression tube. Therefore, there is a demand for a method of sensing the heat generated by corrosion caused by an abnormality inside the compression tube. Conventionally, abnormalities due to heat generation in electric wires, connection points, etc. have been confirmed by displaying a temperature-sensitive label, observing with an infrared camera during energization, or visually inspecting.

従来の熱画像システムは、熱画像を撮像する撮像素子と、この撮像素子が出力する出力信号を変換して温度データを演算する変換演算回路と、この変換演算回路が出力する温度データを記憶するデータ記憶素子と、このデータ記憶素子が記憶する温度データを外部に送信する送信回路などを熱センサ装置が備えている(例えば、特許文献1参照)。このような従来の熱画像システムでは、表示装置と熱センサ装置との間で通信をすることによって、熱センサ装置から表示装置に温度データを送信し、この温度データから温度分布画像を表示装置が生成し、この温度分布画像を表示装置が画面上に表示している。 A conventional thermal imaging system includes an image pickup device that captures a thermal image, a conversion operation circuit that converts an output signal output from the image pickup device to calculate temperature data, and the temperature data that the conversion operation circuit outputs. A thermal sensor device includes a data storage element and a transmission circuit for transmitting temperature data stored in the data storage element to the outside (see, for example, Patent Document 1). In such a conventional thermal imaging system, temperature data is transmitted from the thermal sensor device to the display device by communicating between the display device and the thermal sensor device, and the display device displays a temperature distribution image based on the temperature data. This temperature distribution image is displayed on the screen by the display device.

従来の示温ラベルは、予め設定された温度に達すると溶融を開始する着色ワックスと、この着色ワックスが浸み込みやすい材質のシートと、このシートを被覆する透明体などを備えている(例えば、特許文献2参照)。このような従来の示温ラベルでは、送電線などが異常発熱したときに着色ワックスが溶融を開始し、着色ワックスがシートに浸み込みこのシートを発色させることによって、巡回点検時に異常高温を知らせている。 A conventional temperature-indicating label includes a colored wax that starts melting when it reaches a preset temperature, a sheet made of a material that the colored wax easily permeates, and a transparent body that covers the sheet (for example, See Patent Document 2). In such conventional temperature-indicating labels, the colored wax begins to melt when power lines, etc., generate abnormal heat. there is

特開2013-076664号公報JP 2013-076664 A

特開平10-122980号公報JP-A-10-122980

従来の熱画像システムは、電線や接続箇所などが通電中でないときには温度上昇が確認できない問題点がある。また、従来の示温ラベルは、上昇温度が大きいときには表示が困難であるとともに、近接しないと表示を視認することが困難であり、はがれ易いなどの設置上の問題点がある The conventional thermal imaging system has a problem that the temperature rise cannot be confirmed when the electric wire or the connection point is not energized. In addition, conventional temperature indicating labels are difficult to display when the temperature rise is large, and it is difficult to see the display unless they are close to it, and there are problems in installation such as easy peeling.

この発明の課題は、検知対象物の発熱を確実に検知することができるとともに、検知対象物の発熱を容易に確認することができる発熱検知装置及び発熱検知システムを提供することである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a heat generation detection device and a heat generation detection system capable of reliably detecting heat generation of a detection target and easily confirming the heat generation of the detection target.

この発明は、以下に記載するような解決手段により、前記課題を解決する。
なお、この発明の実施形態に対応する符号を付して説明するが、この実施形態に限定するものではない。
請求項1の発明は、図1、図2図4及び図17に示すように、検知対象物(F,C)に装着されてこの検知対象物の発熱を検知する発熱検知装置であって、前記検知対象物の外周部の周方向に間隔をあけて複数の検知箇所(P1~P6)で、この検知対象物の発熱を検知する発熱検知部(3)を備え、前記発熱検知部は、前記検知対象物の各検知箇所から熱を受けたときの抵抗値の変化量(ΔR)が異なる複数の抵抗体(R 1 ~R 6 )と、前記複数の抵抗体の抵抗値の変化を検知する抵抗値変化検知部(15)と、前記検知対象物の各検知箇所から所定温度(T 0 )を超える熱を受けたときに開閉する複数の開閉部(S 1 ~S 6 )と、前記複数の開閉部の開閉状態を検知する開閉状態検知部(7)とを備えることを特徴とする発熱検知装置(2A,2B)である。
The present invention solves the above-described problems by means of solutions as described below.
In addition, although the code|symbol corresponding to embodiment of this invention is attached|subjected and demonstrated, it does not limit to this embodiment.
The invention of claim 1, as shown in FIGS . , a heat generation detection unit (3) for detecting heat generation of the detection target at a plurality of detection locations (P 1 to P 6 ) spaced apart in the circumferential direction of the outer periphery of the detection target, wherein the heat generation detection The portion includes a plurality of resistors (R 1 to R 6 ) having different amounts of change in resistance value (ΔR) when receiving heat from each detection point of the detection object, and a resistance value of the plurality of resistors. A resistance value change detection part (15) for detecting a change, and a plurality of opening/closing parts (S1 to S6 ) that open and close when heat exceeding a predetermined temperature (T0) is received from each detection point of the object to be detected. and an open/close state detection unit (7) for detecting the open/close state of the plurality of open/close units .

請求項2の発明は、請求項に記載の発熱検知装置において、図17に示すように、前記複数の抵抗体は、直列接続されており、前記検知対象物の温度が上昇したときに抵抗値が指数関数的に増加又は低下し、前記抵抗値変化検知部は、前記検知対象物の検知箇所毎に発熱による前記抵抗体の抵抗値の増加又は低下を検知し、前記複数の開閉部は、前記複数の抵抗体毎に並列接続されており、前記検知対象物の各検知箇所から所定温度を超える熱を受けたときに閉じ、前記開閉状態検知部は、前記検知対象物の各検知箇所の開閉部の閉状態を検知することによって、この検知対象物の発熱を検知することを特徴とする発熱検知装置である。 According to a second aspect of the present invention, there is provided the heat generation detecting device according to the first aspect, wherein the plurality of resistors are connected in series, and when the temperature of the object to be detected rises, the resistors are connected in series . The value increases or decreases exponentially, the resistance value change detection unit detects an increase or decrease in the resistance value of the resistor due to heat generation at each detection location of the detection object, and the plurality of opening and closing units , the resistors are connected in parallel for each of the plurality of resistors, and are closed when heat exceeding a predetermined temperature is received from each detection location of the detection object, and the open/closed state detection unit is connected to each detection location of the detection object. The heat detection device is characterized in that the heat generation of the object to be detected is detected by detecting the closed state of the opening/closing portion of the heat detection device.

請求項3の発明は、図1に示すように、検知対象物(F,C)の発熱を検知する発熱検知システムであって、請求項1又は請求項に記載の発熱検知装置(2A,2B)と、前記発熱検知装置の検知結果を送信する送信装置(13)と、前記送信装置から送信される前記検知結果を受信する受信装置(14)とを備える発熱検知システム(1)である。 The invention of claim 3 is , as shown in FIG. 2B), a transmitting device (13) for transmitting a detection result of the fever detecting device, and a receiving device (14) for receiving the detection result transmitted from the transmitting device (1). .

この発明によると、検知対象物の発熱を確実に検知することができるとともに、検知対象物の発熱を容易に確認することができる。 According to the present invention, it is possible to reliably detect the heat generation of the object to be detected, and to easily confirm the heat generation of the object to be detected.

この発明の第1実施形態に係る発熱検知システムを模式的に示す全体図である。1 is an overall view schematically showing a heat generation detection system according to a first embodiment of the invention; FIG. 図1のII-II線で切断した状態を示す断面図である。FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1; 図2のIII-III線で切断した状態を示す断面図である。3 is a cross-sectional view showing a state cut along line III-III of FIG. 2; FIG. 図1のIV-IV線で切断した状態を示す断面図である。FIG. 2 is a cross-sectional view taken along line IV-IV of FIG. 1; 図4のV-V線で切断した状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state cut along the VV line in FIG. 4; この発明の第1実施形態に係る発熱検知装置の回路図である。1 is a circuit diagram of a heat generation detection device according to a first embodiment of the present invention; FIG. この発明の第1実施形態に係る発熱検知装置の発熱検知動作を模式的に示すグラフである。5 is a graph schematically showing the heat generation detection operation of the heat generation detection device according to the first embodiment of the present invention; この発明の第2実施形態に係る発熱検知装置の回路図である。FIG. 4 is a circuit diagram of a heat generation detection device according to a second embodiment of the present invention; この発明の第2実施形態に係る発熱検知装置の発熱検知動作を模式的に示すグラフである。8 is a graph schematically showing the heat generation detection operation of the heat generation detection device according to the second embodiment of the present invention; この発明の第3実施形態に係る発熱検知装置の回路図である。FIG. 10 is a circuit diagram of a heat generation detection device according to a third embodiment of the present invention; の発明の第3実施形態に係る発熱検知装置における発熱検知部の抵抗体の抵抗温度係数を一例として模式的に示すグラフである。10 is a graph schematically showing, as an example, the temperature coefficient of resistance of the resistor of the heat detection section in the heat detection device according to the third embodiment of the present invention; この発明の第4実施形態に係る発熱検知装置における発熱検知部の抵抗体の抵抗温度係数を模式的に示すグラフである。FIG. 11 is a graph schematically showing the temperature coefficient of resistance of a resistor in a heat generation detection unit in a heat generation detection device according to a fourth embodiment of the present invention; FIG. この発明の第5実施形態に係る発熱検知装置の回路図である。FIG. 11 is a circuit diagram of a heat detection device according to a fifth embodiment of the present invention; この発明の第5実施形態に係る発熱検知装置における発熱検知部の抵抗体の抵抗温度係数を一例として模式的に示す片対数グラフである。FIG. 11 is a semi-logarithmic graph schematically showing, as an example, the temperature coefficient of resistance of a resistor in a heat generation detection unit in a heat generation detection device according to a fifth embodiment of the present invention; FIG. この発明の第5実施形態に係る発熱検知装置の発熱検知動作を模式的に示すグラフである。FIG. 14 is a graph schematically showing the heat generation detection operation of the heat generation detection device according to the fifth embodiment of the present invention; FIG. この発明の第6実施形態に係る発熱検知装置における発熱検知部の抵抗体の抵抗温度係数を一例として模式的に示す片対数グラフである。FIG. 12 is a semi-logarithmic graph schematically showing, as an example, the temperature coefficient of resistance of the resistor of the heat generation detection unit in the heat generation detection device according to the sixth embodiment of the present invention; FIG. この発明の第7実施形態に係る発熱検知装置の回路図である。FIG. 11 is a circuit diagram of a heat generation detection device according to a seventh embodiment of the present invention;

(第1実施形態)
以下、図面を参照して、この発明の第1実施形態について詳しく説明する。
図1~図5に示すき電線Fは、き電用変電所から電車線に電力を供給する電線である。き電線Fは、電車又は電気機関車などの電気車の集電装置が摺動する架線のトロリ線と並行に架設されており、一定区間毎にこのトロリ線に電力を供給する。き電線Fは、例えば、硬銅より線又は硬アルミニウムより線などである。き電線Fは、発熱検知装置2A,2Bによって発熱の有無が検知される被検体(検知対象物)である。き電線Fは、図2に示すように、断面形状が略円形である。
(First embodiment)
A first embodiment of the present invention will be described in detail below with reference to the drawings.
A feeder line F shown in FIGS. 1 to 5 is an electric wire that supplies electric power from a feeder substation to an overhead contact line. The feeder line F is installed in parallel with a trolley wire of an overhead wire on which a current collector of an electric car such as an electric train or an electric locomotive slides, and supplies electric power to the trolley wire for each fixed section. The feeder wire F is, for example, a hard copper stranded wire or a hard aluminum stranded wire. The feeder line F is a test object (detection object) whose presence or absence of heat generation is detected by the heat detection devices 2A and 2B. The feeder line F has a substantially circular cross-sectional shape, as shown in FIG.

図1、図4及び図5に示す接続部Cは、き電線Fを接続する部材である。接続部Cは、き電線Fの端部同士を電気的及び機械的に接続する金具である。接続部Cは、例えば、き電線Fの端部の外周面に装着された状態で圧縮されてこのき電線Fを把持する圧縮接続管(スリーブ)である。図1、図4及び図5に示す接続部Cは、張力の作用するより線同士をスリーブによって電気的及び機械的に接続する直線スリーブである。接続部Cは、き電線Fが銅線の場合には銅製の圧縮接続管が使用され、き電線Fがアルミニウム線の場合にはアルミニウム製の圧縮接続管が使用される。接続部Cは、図4に示すように、断面形状が略六角形である。 A connecting portion C shown in FIGS. 1, 4 and 5 is a member for connecting a feeder line F. The connection portion C is a metal fitting that electrically and mechanically connects the ends of the feeder line F to each other. The connection portion C is, for example, a compression connection pipe (sleeve) that is attached to the outer peripheral surface of the end of the feeder line F and is compressed to grip the feeder line F. As shown in FIG. The connection C shown in FIGS. 1, 4 and 5 is a straight sleeve that electrically and mechanically connects the strands under tension by means of the sleeve. A copper compression connection pipe is used for the connection portion C when the feeder line F is a copper wire, and an aluminum compression connection pipe is used when the feeder line F is an aluminum wire. As shown in FIG. 4, the connecting portion C has a substantially hexagonal cross-sectional shape.

図1に示す発熱検知システム1は、き電線F又は接続部Cの発熱を検知するシステムである。発熱検知システム1は、き電線F又は接続部Cの発熱を発熱検知装置2A,2Bが検知したときに、この発熱検知装置2A,2Bの検知結果を外部機器に送信してこのき電線F又は接続部Cの発熱を告知する。発熱検知システム1は、図1に示すように、発熱検知装置2A,2Bと、送信装置13と、受信装置14などを備えている。 A heat generation detection system 1 shown in FIG. 1 is a system for detecting heat generation in a feeder line F or a connecting portion C. When the heat generation detection devices 2A and 2B detect heat generation in the feeder line F or the connection portion C, the heat generation detection system 1 transmits the detection results of the heat generation detection devices 2A and 2B to an external device to detect the feeder line F or the connection portion C. Notification of heat generation at connection C. As shown in FIG. 1, the heat detection system 1 includes heat detection devices 2A and 2B, a transmitter 13, a receiver 14, and the like.

図1~図3に示す発熱検知装置2Aは、き電線Fに装着されてこのき電線Fの発熱を検知する装置である。図1、図4及び図5に示す発熱検知装置2Bは、接続部Cに装着されてこの接続部Cの発熱を検知する装置である。図1~図5に示す発熱検知装置2Aは、き電線Fに着脱自在に装着されており、このき電線Fの発熱を直接検知する。図1、図4及び図5に示す発熱検知装置2Bは、接続部Cに着脱自在に装着されており、この接続部Cの発熱を直接検知するとともに、き電線Fの発熱をこの接続部Cを通じて検知する。発熱検知装置2A,2Bは、図2及び図4に示すように、き電線F又は接続部Cの外周部に巻き付けられた状態で、このき電線F又はこの接続部Cの発熱を検知する発熱検知帯である。発熱検知装置2A,2Bは、図1に示すように、き電線F又は接続部Cの発熱を検知したときに、このき電線F又はこの接続部Cの発熱を送信装置13に送信する。発熱検知装置2A,2Bは、電気鉄道におけるき電線F又は接続部Cの圧縮箇所の異常発熱を検知する異常発熱検知センサとして機能する。 A heat generation detection device 2A shown in FIGS. 1 to 3 is a device attached to a feeder line F to detect heat generation of the feeder line F. FIG. A heat generation detection device 2B shown in FIGS. 1, 4, and 5 is a device that is attached to the connection portion C and detects heat generation at the connection portion C. As shown in FIG. The heat detection device 2A shown in FIGS. 1 to 5 is detachably attached to the feeder line F, and directly detects the heat generated by the feeder line F. As shown in FIG. The heat detection device 2B shown in FIGS. 1, 4 and 5 is detachably attached to the connection portion C, and directly detects the heat generation of the connection portion C, and also detects the heat generation of the feeder line F to the connection portion C. detected through As shown in FIGS. 2 and 4, the heat generation detection devices 2A and 2B are wound around the feeder line F or the connection portion C, and detect heat generation of the feeder line F or the connection portion C. This is the detection zone. As shown in FIG. 1, the heat detection devices 2A and 2B transmit the heat generation of the feeder line F or the connection portion C to the transmitter 13 when detecting the heat generation of the feeder line F or the connection portion C. FIG. The heat generation detection devices 2A and 2B function as abnormal heat generation detection sensors that detect abnormal heat generation at compressed portions of the feeder line F or the connecting portion C in the electric railway.

発熱検知装置2Aは、例えば、接続部Cの一方の端部近傍のき電線Fの外周面の発熱と、この接続部Cの他方の端部近傍のき電線Fの発熱とをそれぞれ検知する。発熱検知装置2Bは、例えば、接続部Cの両端部から僅かに中央部寄りの2箇所におけるき電線F又は接続部Cの外周面の発熱をそれぞれ検知する。発熱検知装置2Aは、図2に示すように、き電線Fの円柱状の外周面と密着するように内周面が円形に形成されている。一方、発熱検知装置2Bは、図4に示すように、接続部Cの六角形の外周面と密着するように内周面が角形に形成されている。発熱検知装置2A,2Bは、図2及び図4に示すように、き電線F及び接続部Cの外周面の周方向に連続してこれらの外周面を囲むように被覆している。発熱検知装置2A,2Bは、き電線Fの中心線を中心として中心角60°となる6箇所の検知箇所P1~P6で、き電線F又は接続部Cの外周部の温度を検知する。発熱検知装置2A,2Bは、図2~図6に示す発熱検知部3と、図2~図5に示す装着部8A,8Bと、導電部9と、弾性部10と、被覆部11などを備えている。発熱検知装置2A,2Bは、いずれも略同一構造であり、以下では発熱検知装置2Aによってき電線Fの発熱を検知する場合を中心に説明し、発熱検知装置2Bについては発熱検知装置2Aと対応する部分について同一の符号を付して詳細な説明を省略する。 The heat detection device 2A detects, for example, the heat generated on the outer peripheral surface of the feeder line F near one end of the connecting portion C and the heat generated by the feeder line F near the other end of the connecting portion C, respectively. The heat detection device 2B detects, for example, heat generation of the feeder line F or the outer peripheral surface of the connection portion C at two locations slightly closer to the central portion from both ends of the connection portion C, respectively. As shown in FIG. 2, the heat detection device 2A has a circular inner peripheral surface so as to be in close contact with the cylindrical outer peripheral surface of the feeder line F. As shown in FIG. On the other hand, as shown in FIG. 4, the heat detection device 2B has a square inner peripheral surface so as to be in close contact with the hexagonal outer peripheral surface of the connecting portion C. As shown in FIG. As shown in FIGS. 2 and 4, the heat detection devices 2A and 2B cover the outer peripheral surfaces of the feeder line F and the connection portion C continuously in the circumferential direction so as to surround these outer peripheral surfaces. The heat detection devices 2A and 2B detect the temperature of the outer periphery of the feeder line F or the connecting portion C at six detection points P 1 to P 6 with a central angle of 60° centered on the center line of the feeder line F. . The heat detection devices 2A and 2B include the heat detection portion 3 shown in FIGS. 2 to 6, the mounting portions 8A and 8B shown in FIGS. I have. Both of the heat generation detection devices 2A and 2B have substantially the same structure, and the case where the heat generation detection device 2A detects heat generation in the feeder line F will be mainly described below, and the heat generation detection device 2B corresponds to the heat generation detection device 2A. The same reference numerals are given to the portions to be carried out, and detailed description thereof will be omitted.

図2~図5に示す発熱検知部3は、き電線Fの外周部の周方向に間隔をあけて複数の検知箇所P1~P6で、このき電線Fの発熱を検知する手段である。発熱検知部3は、き電線Fの所定温度を超える発熱を検知する。発熱検知部3は、き電線Fが所定温度以下であるときには、電気回路Eを閉じてこの電気回路Eを通電状態(ON状態)にしている。一方、発熱検知部3は、き電線Fが所定温度を超えたときには、電気回路Eを開いてこの電気回路Eを通電状態から非通電状態(OFF状態)に切り替える。発熱検知部3は、き電線Fの各検知箇所P1~P6から熱を受けて、き電線Fの多角点多点の温度上昇を検知する。発熱検知部3は、図6に示すように、複数の開閉部S1~S6と、配線部4A~4Dと、電源部5と、コネクタ部6A~6Cと、開閉状態検知部7などを備えている。 2 to 5 is means for detecting heat generation in the feeder line F at a plurality of detection points P 1 to P 6 spaced apart in the circumferential direction of the outer periphery of the feeder line F. . The heat detection unit 3 detects heat generated in the feeder line F exceeding a predetermined temperature. The heat detection unit 3 closes the electric circuit E to bring the electric circuit E into an energized state (ON state) when the temperature of the feeder line F is lower than a predetermined temperature. On the other hand, when the temperature of the feeder line F exceeds a predetermined temperature, the heat detection unit 3 opens the electric circuit E and switches the electric circuit E from an energized state to a non-energized state (OFF state). The heat detection unit 3 receives heat from the detection points P 1 to P 6 of the feeder line F and detects temperature rises at multiple points on the feeder line F. FIG. As shown in FIG. 6, the heat detection section 3 includes a plurality of switching sections S 1 to S 6 , wiring sections 4A to 4D, a power supply section 5, connector sections 6A to 6C, an open/close state detection section 7, and the like. I have.

図6に示す電気回路Eは、き電線Fの発熱を検知するために電気的素子によって構成された回路である。電気回路Eは、複数の開閉部S1~S6、配線部4A~4C、電源部5及び開閉状態検知部7などによって構成されている。電気回路Eは、き電線Fが所定温度以下であるときには、開閉部S1~S6のいずれも閉じており通電状態を維持している。一方、電気回路Eは、き電線Fが所定温度を超えて発熱したときには、開閉部S1~S6の少なくとも一つが開いて通電状態から非通電状態に切り替わる。 An electric circuit E shown in FIG. The electric circuit E is composed of a plurality of opening/closing sections S 1 to S 6 , wiring sections 4A to 4C, a power supply section 5, an opening/closing state detection section 7, and the like. In the electric circuit E, when the temperature of the feeder line F is lower than a predetermined temperature, all of the opening/closing portions S 1 to S 6 are closed to maintain an energized state. On the other hand, in the electric circuit E, when the feeder line F generates heat exceeding a predetermined temperature, at least one of the opening/closing sections S 1 to S 6 is opened to switch from the energized state to the non-energized state.

開閉部S1~S6は、き電線Fの各検知箇所P1~P6から所定温度を超える熱を受けたときに開閉する素子である。開閉部S1~S6は、直列接続されており、き電線Fの各検知箇所P1~P6から所定温度を超える熱を受けたときに開く。開閉部S1~S6は、図6に示すように、通常時には電気接点を閉じているb接点として機能し、き電線Fが所定温度以下であるときには電気接点を閉じており、き電線Fが所定温度を超えたときには電気接点を開く。開閉部S1~S6は、例えば、所定の設定温度に達したときに開閉動作するサーモスイッチのような電線用の温度開閉器、又は所定の設定温度に達したときに電磁力によって接点を開閉する継電器(リレー)などの素子である。開閉部S1~S6は、図2に示すように、き電線Fの中心線を中心として中心角60°となるように、き電線Fの外周部の周方向に間隔をあけて複数配置されており、き電線Fの各検知箇所P1~P6に対応して合計6個配置されている。開閉部S1~S6は、き電線Fの外周部に向けて押圧されるように、装着部8A,8Bの内周面から僅かに露出した状態で、この装着部8A,8Bに保持されている。 The opening/closing portions S 1 to S 6 are elements that open and close when heat exceeding a predetermined temperature is received from the detection points P 1 to P 6 of the feeder line F. FIG. The opening/closing parts S 1 to S 6 are connected in series and open when heat exceeding a predetermined temperature is received from each detection point P 1 to P 6 of the feeder line F. As shown in FIG. 6, the opening/closing parts S 1 to S 6 normally function as b-contacts that close electrical contacts, and when the temperature of the feeder line F is below a predetermined temperature, the electrical contacts are closed and the feeder line F opens the electrical contact when the temperature exceeds a predetermined temperature. The switching parts S 1 to S 6 are, for example, temperature switches for electric wires, such as thermoswitches that open and close when a predetermined set temperature is reached, or contact points that are opened by electromagnetic force when a predetermined set temperature is reached. It is an element such as a relay that opens and closes. As shown in FIG. 2, the opening/closing parts S 1 to S 6 are arranged in plural at intervals in the circumferential direction of the outer periphery of the feeder line F so that the central angle is 60° with the center line of the feeder line F as the center. A total of six sensors are arranged corresponding to the respective detection points P 1 to P 6 of the feeder line F. The opening/closing sections S 1 to S 6 are held by the mounting sections 8A and 8B in a state of being slightly exposed from the inner peripheral surfaces of the mounting sections 8A and 8B so as to be pressed toward the outer periphery of the feeder line F. ing.

図6に示す配線部4A~4Cは、複数の開閉部S1~S6、電源部5及び開閉状態検知部7を電気的に接続する手段である。配線部4Dは、開閉状態検知部7と送信装置13とを電気的に接続する手段である。配線部4A~4Cは、複数の開閉部S1~S6、電源部5及び開閉状態検知部7を直列に接続している。配線部4Aは、装着部8A側に配線されており、配線部4Bは装着部8B側に配線されており、配線部4Cは収容部12側に配線されている。配線部4A~4Dは、例えば、銅線、銀めっき銅線、銅ニッケル合金線、ニッケルクラッド銅線又はニッケルめっき銅線などを被覆材によって被覆したリード線である。電源部5は、電気回路Eに電力を供給する手段である。電源部5は、例えば、直流電力を放電する一次電池、電力を蓄積する充電可能な二次電池、又は太陽光などの光エネルギーを電力に変換する光電池などである。 Wiring portions 4A to 4C shown in FIG. 6 are means for electrically connecting a plurality of opening/closing portions S 1 to S 6 , power supply portion 5 and opening/closing state detection portion 7 . The wiring portion 4D is means for electrically connecting the open/closed state detection portion 7 and the transmission device 13 . The wiring portions 4A to 4C connect a plurality of opening/closing portions S 1 to S 6 , the power supply portion 5 and the opening/closing state detection portion 7 in series. The wiring portion 4A is wired on the mounting portion 8A side, the wiring portion 4B is wired on the mounting portion 8B side, and the wiring portion 4C is wired on the accommodating portion 12 side. The wiring portions 4A to 4D are lead wires coated with a coating material, for example, copper wire, silver-plated copper wire, copper-nickel alloy wire, nickel-clad copper wire, or nickel-plated copper wire. The power supply unit 5 is means for supplying electric power to the electric circuit E. As shown in FIG. The power supply unit 5 is, for example, a primary battery that discharges DC power, a rechargeable secondary battery that stores power, or a photocell that converts light energy such as sunlight into power.

コネクタ部6A~6Cは、配線部4A~4Cを電気的に接続する手段である。コネクタ部6A~6Cは、例えば、嵌合及び分離が可能であって配線部4A~4Cを電気的に接続する雄端子及び雌端子である。コネクタ部6Aは、装着部8A側と装着部8B側に形成されており、コネクタ部6Bは装着部8A側と収容部12側に形成されており、コネクタ部6Cは装着部8B側と収容部12側に形成されている。コネクタ部6Aは、装着部8Aと装着部8Bとが接合状態になったときに配線部4Aと配線部4Bとを接続し、装着部8Aと装着部8Bとが分離状態になったときに配線部4Aと配線部4Bとを切り離す。コネクタ部6B,6Cは、装着部8A,8Bと収容部12とが接合状態になったときに配線部4A,4Bと配線部4Cとを接続し、装着部8A,8Bと収容部12とが分離状態になったときに配線部4A,4Bと配線部4Cとを切り離す。 The connector portions 6A-6C are means for electrically connecting the wiring portions 4A-4C. The connector portions 6A to 6C are, for example, male terminals and female terminals that can be fitted and separated and electrically connect the wiring portions 4A to 4C. The connector portion 6A is formed on the side of the mounting portion 8A and the side of the mounting portion 8B, the connector portion 6B is formed on the side of the mounting portion 8A and the housing portion 12, and the connector portion 6C is formed on the side of the mounting portion 8B and the housing portion. 12 side. The connector portion 6A connects the wiring portion 4A and the wiring portion 4B when the mounting portion 8A and the mounting portion 8B are in a joined state, and connects the wiring portion 4A and the wiring portion 4B when the mounting portion 8A and the mounting portion 8B are in a separated state. The portion 4A and the wiring portion 4B are separated. The connector portions 6B and 6C connect the wiring portions 4A and 4B and the wiring portion 4C when the mounting portions 8A and 8B and the housing portion 12 are in a joined state, and the mounting portions 8A and 8B and the housing portion 12 are connected. The wiring portions 4A and 4B and the wiring portion 4C are separated when the separated state is established.

開閉状態検知部7は、複数の開閉部S1~S6の開閉状態を検知する手段である。開閉状態検知部7は、き電線Fの各検知箇所P1~P6の開閉部S1~S6の開状態を検知することによって、き電線Fの発熱を検知する。開閉状態検知部7は、配線部4Cを流れる電流を測定することによって、電気回路Eの通電状態を検知して開閉部S1~S6の開閉状態を検知する。開閉状態検知部7は、例えば、機械的な可動部を備えておらず、配線部4Cの通電状態及び非通電状態を検知する半導体リレー(solid-state relay(SSR))のようなスイッチング素子である。開閉状態検知部7は、き電線Fが所定温度を超えて開閉部S1~S6が開き、電気回路Eが通電状態から非通電状態に切り替わったときに、発熱検知信号を送信装置13に出力する。 The open/closed state detector 7 is means for detecting the open/closed states of the plurality of opening/closing portions S 1 to S 6 . The open/close state detector 7 detects the heat generation of the feeder line F by detecting the open state of the open/closed portions S 1 to S 6 of the respective detection points P 1 to P 6 of the feeder line F. FIG. The open/closed state detection unit 7 detects the open/closed state of the open/close portions S 1 to S 6 by detecting the energized state of the electric circuit E by measuring the current flowing through the wiring portion 4C. The open/closed state detection unit 7 is, for example, a switching element such as a semiconductor relay (solid-state relay (SSR)) that does not have a mechanical movable part and detects the energized state and the non-energized state of the wiring part 4C. be. The switching state detection unit 7 sends a heat generation detection signal to the transmitting device 13 when the feeder line F exceeds a predetermined temperature and the switching units S 1 to S 6 are opened and the electric circuit E is switched from the energized state to the non-energized state. Output.

図2に示す装着部8A,8Bは、き電線Fに着脱自在に装着される部分である。装着部8A,8Bは、発熱検知部S1~S6を保持した状態で、き電線Fに着脱自在に装着される。装着部8A,8Bは、図2に示すように、き電線Fの外側から着脱可能なように分割及び結合可能な構造であり、互いに嵌合させることによって一体化される。装着部8Aは、き電線Fの外周面の一方の半面に装着され、装着部8Bはこのき電線Fの外周面の他方の半面に装着される。装着部8A,8Bは、この装着部8A,8Bの内周面がき電線Fの外周面と対向する凹状の湾曲面に形成されている。装着部8A,8Bは、この装着部8A,8Bを貫通して形成されている収容口に開閉部S1~S6を嵌め込み収容している。装着部8A,8Bは、図3に示すように、弾性部10及び被覆部11の両端部を挟み込むように、この装着部8A,8Bの両端部にフランジ部が形成されている。 Mounting portions 8A and 8B shown in FIG. 2 are portions to be detachably mounted on the feeder line F. The mounting portions 8A and 8B are detachably mounted on the feeder line F while holding the heat detecting portions S 1 to S 6 . As shown in FIG. 2, the mounting portions 8A and 8B have a structure that can be detached and separated from the outside of the feeder line F, and are integrated by fitting them together. The mounting portion 8A is mounted on one half of the outer peripheral surface of the feeder line F, and the mounting portion 8B is mounted on the other half of the outer peripheral surface of the feeder line. The mounting portions 8A and 8B are formed into concave curved surfaces facing the outer peripheral surface of the feeder wire F at the inner peripheral surfaces of the mounting portions 8A and 8B. The mounting portions 8A and 8B accommodate opening/closing portions S 1 to S 6 by fitting them into housing openings formed through the mounting portions 8A and 8B. As shown in FIG. 3, the mounting portions 8A and 8B have flange portions formed at both ends thereof so as to sandwich both ends of the elastic portion 10 and the covering portion 11 .

図2及び図3に示す導電部9は、電流が流れる部分である。導電部9は、き電線Fの表面に電流が均一に流れるようにこのき電線Fの表面と接触している。導電部9は、装着部8A,8Bと開閉部S1~S6との間の隙間から異物が浸入するのを防止する。導電部9は、き電線Fの外周面と装着部8A,8Bの内周面との間に挟み込まれるように、この装着部8A,8Bの内周面の表面に貼り付けられてアルミニウム製のテープなどである。 The conductive portion 9 shown in FIGS. 2 and 3 is a portion through which current flows. The conductive part 9 is in contact with the surface of the feeder line F so that the current flows uniformly on the surface of the feeder line F. As shown in FIG. The conductive portion 9 prevents foreign matter from entering through gaps between the mounting portions 8A, 8B and the opening/closing portions S 1 to S 6 . The conductive portion 9 is attached to the inner peripheral surfaces of the mounting portions 8A and 8B so as to be sandwiched between the outer peripheral surface of the feeder line F and the inner peripheral surfaces of the mounting portions 8A and 8B. tape, etc.

弾性部10は、き電線Fの外周部に導電部9を通じて開閉部S1~S6を密着させるための弾性力を発生する部分である。弾性部10は、図2に示すように、外観が円環状の部材であり、装着部8A,8Bの外周部の全周に所定の厚さで形成されている。弾性部10は、図2及び図3に示すように、開閉部S1~S6が導電部9を介してき電線Fと密着するように、開閉部S1~S6をき電線Fに向かって押圧する。弾性部10は、被覆部11と導電部9との間を電気的に絶縁する絶縁材としても機能する。弾性部10は、例えば、熱安定性、撥水性及び電気絶縁性を有するシリコーン樹脂などである。 The elastic portion 10 is a portion that generates an elastic force for bringing the opening/closing portions S 1 to S 6 into close contact with the outer peripheral portion of the feeder line F through the conductive portion 9 . As shown in FIG. 2, the elastic portion 10 is a member having an annular appearance, and is formed with a predetermined thickness along the entire circumference of the outer peripheral portions of the mounting portions 8A and 8B. As shown in FIGS. 2 and 3, the elastic portion 10 is arranged to move the opening/closing portions S 1 to S 6 toward the feeder line F so that the opening/closing portions S 1 to S 6 are in close contact with the feeder line F via the conductive portion 9 . and press. The elastic portion 10 also functions as an insulating material that electrically insulates between the covering portion 11 and the conductive portion 9 . The elastic part 10 is, for example, silicone resin or the like having thermal stability, water repellency, and electrical insulation.

被覆部11は、弾性部10の表面を被覆する部分である。被覆部11は、弾性部10の表面を保護するとともに、発熱検知装置2Aの内部に雨水などが侵入するのを防止する。被覆部11は、図2及び図3に示すように、外観が円環状の部材であり、弾性部10の外周部の全周に所定の厚さで形成されている。弾性部10は、例えば、耐水性、耐候性、耐摩耗性、電気絶縁性を有するとともに機械強度に優れたメラミン樹脂などのようなスポンジである。 The covering portion 11 is a portion that covers the surface of the elastic portion 10 . The covering portion 11 protects the surface of the elastic portion 10 and prevents rainwater or the like from entering the heat detection device 2A. As shown in FIGS. 2 and 3, the covering portion 11 is a member having an annular appearance, and is formed with a predetermined thickness along the entire circumference of the outer peripheral portion of the elastic portion 10 . The elastic portion 10 is, for example, a sponge such as melamine resin having water resistance, weather resistance, abrasion resistance, electrical insulation, and excellent mechanical strength.

図6に示す収容部12は、配線部4C、電源部5及び開閉状態検知部7を収容する部分である。収容部12は、この収容部12の内部に雨水などが浸入するのを防止するために、配線部4C、電源部5及び開閉状態検知部7を密閉状態で収容する。収容部12は、装着部8A,8Bに着脱自在に装着される。 The accommodation portion 12 shown in FIG. 6 is a portion that accommodates the wiring portion 4C, the power supply portion 5, and the open/closed state detection portion 7. As shown in FIG. The accommodation portion 12 accommodates the wiring portion 4C, the power supply portion 5, and the open/close state detection portion 7 in a sealed state in order to prevent rainwater or the like from entering the inside of the accommodation portion 12. As shown in FIG. The housing portion 12 is detachably mounted on the mounting portions 8A and 8B.

図1に示す送信装置13は、発熱検知装置2A,2Bの検知結果を送信する装置である。送信装置13は、発熱検知装置2A,2Bの開閉状態検知部7がき電線Fの発熱を検知したときに、この開閉状態検知部7の検知結果を受信装置14に送信する。送信装置13は、発熱検知部3が出力する発熱検知信号を受信したときに、この発熱検知信号を検知結果として送信する。送信装置13は、発熱検知装置2A,2Bの検知結果を無線で送信する送信機である。送信装置13は、固定バンドによって、接続部Cに着脱自在に装着されている。 The transmitter 13 shown in FIG. 1 is a device that transmits the detection results of the heat detection devices 2A and 2B. The transmitter 13 transmits the detection result of the open/close state detector 7 to the receiver 14 when the open/close state detector 7 of the heat detectors 2A and 2B detects heat generation in the feeder line F. FIG. When receiving the heat generation detection signal output from the heat generation detection unit 3, the transmission device 13 transmits the heat generation detection signal as the detection result. The transmitter 13 is a transmitter that wirelessly transmits the detection results of the heat detection devices 2A and 2B. The transmission device 13 is detachably attached to the connecting portion C by a fixing band.

図1に示す受信装置14は、送信装置13から送信される検知結果を受信する装置である。受信装置14は、発熱検知装置2A,2Bの開閉状態検知部7がき電線Fの発熱を検知したときに、この開閉状態検知部7の検知結果を送信装置13から受信する。受信装置14は、送信装置13が送信する発熱検知信号を検知結果として受信する。受信装置14は、発熱検知信号を受信したときには、き電線Fの発熱を指令又は保守区に通信する。受信装置14は、送信装置13が送信する発熱検知装置2A,2Bの検知結果を受信する受信機である。受信装置14は、例えば、線路に沿って巡回する作業員が所有するスマートフォン、携帯電話又はタブレット型端末などの携帯端末装置(情報処理端末)、信号機器室内の通信機器、駅構内などの通信機器室内の通信機器、又は線路上を走行する列車の運行を管理する中央指令所内の運行管理装置などである。受信装置14は、発熱検知信号を受信したときには、音声若しくは光によって警報を発生する警報器、又は文字、図形、記号、色彩若しくはこれらの組合せによって所定の表示を行う表示灯を必要に応じて動作させる。 The receiving device 14 shown in FIG. 1 is a device that receives the detection result transmitted from the transmitting device 13 . The receiver 14 receives the detection result of the open/close state detector 7 from the transmitter 13 when the open/close state detector 7 of the heat detectors 2A and 2B detects heat generation in the feeder line F. FIG. The receiving device 14 receives the heat generation detection signal transmitted by the transmitting device 13 as a detection result. When the receiving device 14 receives the heat generation detection signal, it communicates the heat generation of the feeder line F to the command or the maintenance section. The receiving device 14 is a receiver that receives the detection results of the heat detection devices 2A and 2B transmitted by the transmitting device 13 . The receiving device 14 is, for example, a mobile terminal device (information processing terminal) such as a smart phone, a mobile phone or a tablet terminal owned by a worker who patrols along the railroad track, a communication device in a signal equipment room, a communication device in a station premises, etc. It may be an indoor communication device, or an operation control device in a central command center that manages the operation of trains running on tracks. When receiving the heat generation detection signal, the receiving device 14 operates, as necessary, an alarm that issues an alarm by sound or light, or an indicator lamp that provides a predetermined display using characters, graphics, symbols, colors, or a combination thereof. Let

次にこの発明の第1実施形態に係る発熱検知システム及び発熱検知装置の動作を説明する。
図2に示すように、装着部8A,8Bの導電部9の内周面をき電線Fの外周面に密着させて、装着部8Aと装着部8Bとを嵌合させると、図1に示すように発熱検知装置2Aがき電線Fに取り付けられる。例えば、接続部Cの内部が腐食すると、この接続部Cの出口付近のき電線Fが発熱する。図2及び図3に示すように、発熱検知装置2Aの導電部9とき電線Fの外周面とが接触しているため、このき電線Fが発生する熱が導電部9を通じて開閉部S1~S6に伝達される。図2に示すように、き電線Fの外周部を囲むように間隔をあけて開閉部S1~S6が配置されている。このため、き電線Fが部分的に発熱した場合であっても、開閉部S1~S6の少なくとも一つにき電線Fから熱が伝達する。
Next, the operation of the heat generation detection system and heat generation detection device according to the first embodiment of the present invention will be described.
As shown in FIG. 2, the inner peripheral surfaces of the conductive portions 9 of the mounting portions 8A and 8B are brought into close contact with the outer peripheral surface of the feeder wire F, and the mounting portions 8A and 8B are fitted together, as shown in FIG. The heat detection device 2A is attached to the feeder line F as shown. For example, when the inside of the connecting portion C corrodes, the feeder line F near the outlet of this connecting portion C generates heat. As shown in FIGS. 2 and 3, since the conductive portion 9 of the heat detection device 2A is in contact with the outer peripheral surface of the electric wire F, the heat generated by the feeder line F is transferred through the conductive portion 9 to the opening/closing portions S 1 to S 1 . S6 . As shown in FIG. 2, opening/closing sections S 1 to S 6 are arranged at intervals so as to surround the outer circumference of the feeder line F. As shown in FIG. Therefore, even if the feeder line F partially heats up, the heat is transmitted from the feeder line F to at least one of the opening/closing sections S 1 to S 6 .

図7に示す縦軸は、電流値(A)であり、横軸は時間(s)である。図7に示すように、き電線Fが所定温度に達する時間t0よりも前では、図6に示す開閉部S1~S6が電気接点を閉じた状態であるため、電気回路Eが通電状態である。その結果、図7に示すように、電気回路Eを流れる電流の電流値が所定値I0であるため、き電線Fが所定温度を超えて発熱していないと開閉状態検知部7が検知する。一方、図7に示すように、き電線Fが所定温度を超える時間t0以降では、図6に示す開閉部S1~S6が閉状態から開状態に切り替わり、電気回路Eが非通電状態になる。その結果、図7に示すように、電気回路Eを流れる電流の電流値がゼロに変化するため、き電線Fが所定温度を超えて発熱したと開閉状態検知部7が検知し、開閉状態検知部7が発熱検知信号を送信装置13に送信する。送信装置13が発熱検知信号を受信装置14に送信すると、作業員が所有する携帯端末装置や信号機器室内の通信機器などに、き電線Fの発熱が告知される。 The vertical axis shown in FIG. 7 is current value (A), and the horizontal axis is time (s). As shown in FIG. 7, before the time t 0 when the feeder line F reaches the predetermined temperature, the switching units S 1 to S 6 shown in FIG. state. As a result, as shown in FIG. 7, since the current value of the current flowing through the electric circuit E is the predetermined value I0 , the switching state detection unit 7 detects that the feeder line F does not generate heat exceeding the predetermined temperature. . On the other hand, as shown in FIG. 7, after the time t 0 when the feeder line F exceeds the predetermined temperature, the opening/closing sections S 1 to S 6 shown in FIG. become. As a result, as shown in FIG. 7, the current value of the current flowing through the electric circuit E changes to zero, so that the open/close state detector 7 detects that the feeder line F has generated heat exceeding a predetermined temperature. The unit 7 transmits the heat generation detection signal to the transmission device 13 . When the transmitting device 13 transmits the heat generation detection signal to the receiving device 14, the portable terminal device owned by the worker and the communication device in the signal equipment room are notified of the heat generation of the feeder line F.

この発明の第1実施形態に係る発熱検知システム及び発熱検知装置には、以下に記載するような効果がある。
(1) この第1実施形態では、き電線Fの外周部の周方向に間隔をあけて複数の検知箇所P1~P6で、このき電線Fの発熱を発熱検知部3が検知する。このため、き電線Fの異常発熱を多角度多点で容易に検知することができるとともに、き電線Fの全周の異常発熱を常時センシングすることができる。例えば、き電線Fの検知箇所P1~P6の全てに一つの発熱検知部3を取り付けることによって一つの電気回路Eによってき電線Fの温度をむらなく検知することができる。
The heat generation detection system and heat generation detection device according to the first embodiment of the present invention have the following effects.
(1) In the first embodiment, the heat generation detection unit 3 detects the heat generation of the feeder line F at a plurality of detection points P 1 to P 6 spaced apart in the circumferential direction of the outer periphery of the feeder line F. FIG. Therefore, the abnormal heat generation of the feeder line F can be easily detected at multiple angles and points, and the abnormal heat generation of the feeder line F can be constantly sensed. For example, by attaching one heat detection unit 3 to all the detection points P 1 to P 6 of the feeder line F, the temperature of the feeder line F can be detected evenly by one electric circuit E. FIG.

(2) この第1実施形態では、き電線Fの各検知箇所P1~P6から所定温度を超える熱を受けたときに複数の開閉部S1~S6が開閉し、この複数の開閉部S1~S6の開閉状態を開閉状態検知部7が検知する。このため、各検知箇所P1~P6に対応して開閉部S1~S6を配置し、き電線Fから伝導する熱によって少なくとも一つの開閉部S1~S6を開閉動作させ、き電線Fの異常発熱を簡単に検知することができる。 (2) In the first embodiment, when heat exceeding a predetermined temperature is received from each of the detection points P 1 to P 6 of the feeder line F, the plurality of opening/closing portions S 1 to S 6 are opened and closed. An open/closed state detector 7 detects the open/closed state of the portions S 1 to S 6 . For this reason, opening/closing parts S 1 to S 6 are arranged corresponding to the detection points P 1 to P 6 , and at least one opening/closing part S 1 to S 6 is opened/closed by the heat conducted from the feeder line F. Abnormal heat generation of the electric wire F can be easily detected.

(3) この第1実施形態では、複数の開閉部S1~S6が直列接続されており、き電線Fの各検知箇所P1~P6から所定温度を超える熱を受けたときに開閉部S1~S6が開く。また、この第1実施形態では、き電線Fの各検知箇所P1~P6の開閉部S1~S6の開状態を開閉状態検知部7が検知することによって、き電線Fの発熱を開閉状態検知部7が検知する。このため、き電線Fの外周部に開閉部S1~S6を連続的に接続して、このき電線Fの温度上昇を多角度多点で検知することができる。また、き電線Fが所定温度を超えたときに開閉部S1~S6が電気回路Eを通電状態に切り替えるため、電気回路Eの通電状態を検知することによってき電線Fの発熱を簡単に検知することができる。さらに、配線部4A~4Cが切断したようなときにも、開閉状態検知部7が電気回路Eの非通電状態を検知するため、発熱検知信号を出力し発熱検知装置2A,2Bの異常を知らせることができる。 (3) In the first embodiment, a plurality of opening/closing sections S 1 to S 6 are connected in series, and are opened and closed when heat exceeding a predetermined temperature is received from each detection point P 1 to P 6 of the feeder line F. Parts S 1 to S 6 are opened. In addition, in the first embodiment, the opening/closing state detection unit 7 detects the open state of the opening/closing portions S 1 to S 6 of the detection points P 1 to P 6 of the feeder line F, thereby detecting the heat generation of the feeder line F. The open/close state detector 7 detects. Therefore, by continuously connecting the open/close sections S 1 to S 6 to the outer peripheral portion of the feeder line F, the temperature rise of the feeder line F can be detected at multiple angles and at multiple points. In addition, when the temperature of the feeder line F exceeds a predetermined temperature, the switches S 1 to S 6 switch the electric circuit E to an energized state. can be detected. Furthermore, even when the wiring portions 4A to 4C are disconnected, the open/close state detection portion 7 detects the non-energized state of the electric circuit E, so that the heat generation detection signal is output to inform the abnormality of the heat detection devices 2A and 2B. be able to.

(4) この第1実施形態では、発熱検知装置2A,2Bの検知結果を送信装置13が送信し、この送信装置13から送信されるこの検知結果を受信装置14が受信する。このため、き電線Fの発熱を送信機から無線などによって受信機に出力し、き電線Fの発熱を迅速かつ正確に告知させることができるとともに、き電線Fの発熱を容易に確認することができる。例えば、発熱検知装置2A,2Bから出力される電気信号によってインタフェースを介してき電線Fの温度の異常を遠方でセンシングすることができる。 (4) In the first embodiment, the transmission device 13 transmits the detection results of the heat detection devices 2A and 2B, and the reception device 14 receives the detection results transmitted from the transmission device 13 . Therefore, the heat generation of the feeder line F can be output from the transmitter to the receiver by radio or the like, and the heat generation of the feeder line F can be promptly and accurately notified, and the heat generation of the feeder line F can be easily confirmed. can. For example, an abnormality in the temperature of the feeder line F can be remotely sensed via an interface by means of electrical signals output from the heat detection devices 2A and 2B.

(第2実施形態)
以下では、図1~図6に示す部分と同一の部分については、同一の符号を付して詳細な説明を省略する。
図8に示す発熱検知部3は、図6に示す発熱検知部3とはき電線Fの発熱検知時の開閉動作が逆である。図8に示す発熱検知部3は、き電線Fが所定温度以下であるときには、電気回路Eを開いてこの電気回路Eを非通電状態(OFF状態)にしている。一方、発熱検知部3は、き電線Fが所定温度を超えたときには、電気回路Eを閉じてこの電気回路Eを非通電状態から通電状態(OFF状態)に切り替える。
(Second embodiment)
1 to 6 are denoted by the same reference numerals, and detailed description thereof will be omitted.
The heat generation detection unit 3 shown in FIG. 8 is opposite to the heat generation detection unit 3 shown in FIG. The heat detection unit 3 shown in FIG. 8 opens the electric circuit E to put the electric circuit E in a non-energized state (OFF state) when the temperature of the feeder line F is below a predetermined temperature. On the other hand, when the temperature of the feeder line F exceeds a predetermined temperature, the heat detection unit 3 closes the electric circuit E to switch the electric circuit E from the non-energized state to the energized state (OFF state).

開閉部S1~S6は、図6に示す開閉部S1~S6とは異なり、配線部4A~4Cによって並列に接続されており、き電線Fの各検知箇所P1~P6から所定温度を超える熱を受けたときに閉じる。開閉部S1~S6は、図8に示すように、通常時には電気接点を開いているa接点として機能し、き電線Fが所定温度以下であるときには電気接点を開いており、き電線Fが所定温度を超えたときには電気接点を閉じる。開閉部S1~S6は、図6に示す開閉部S1~S6と同様に、図2に示すようにき電線Fの中心線を中心として中心角60°となるように、き電線Fの外周部の周方向に間隔をあけて複数配置されている。配線部4A~4Cは、図8に示すように、開閉部S1~S6、電源部5及び開閉状態検知部7を並列に接続している。 Unlike the opening/closing parts S 1 to S 6 shown in FIG. 6 , the opening / closing parts S 1 to S 6 are connected in parallel by wiring parts 4A to 4C. It closes when it receives heat exceeding a predetermined temperature. As shown in FIG. 8, the opening/closing parts S 1 to S 6 normally function as a-contacts that open electrical contacts, and open the electrical contacts when the temperature of the feeder line F is below a predetermined temperature. closes the electrical contact when the temperature exceeds a predetermined temperature. The opening/closing parts S 1 to S 6 , like the opening/closing parts S 1 to S 6 shown in FIG. A plurality of them are arranged at intervals in the circumferential direction of the outer peripheral portion of F. As shown in FIG. 8, the wiring sections 4A to 4C connect the switching sections S 1 to S 6 , the power supply section 5 and the switching state detection section 7 in parallel.

開閉状態検知部7は、き電線Fの各検知箇所P1~P6の開閉部S1~S6の閉状態を検知することによってき電線Fの発熱を検知する。開閉状態検知部7は、き電線Fが所定温度を超えて開閉部S1~S6が閉じ、電気回路Eが非通電状態から通電状態に切り替わったときに、発熱検知信号を送信装置13に出力する。 The switching state detector 7 detects the heat generation of the feeder line F by detecting the closed states of the switchers S 1 to S 6 of the respective detection points P 1 to P 6 of the feeder line F. FIG. The switching state detection unit 7 sends a heat generation detection signal to the transmitting device 13 when the feeder line F exceeds a predetermined temperature and the switching portions S 1 to S 6 are closed and the electric circuit E is switched from the non-energized state to the energized state. Output.

次にこの発明の第2実施形態に係る発熱検知システム及び発熱検知装置の動作を説明する。
図9に示す縦軸は、電流値(A)であり、横軸は時間(s)である。き電線Fが所定温度に達する時間t0よりも前では、図8に示す開閉部S1~S6が電気接点を開いた状態であるため、電気回路Eが非通電状態である。その結果、図9に示すように、電気回路Eを流れる電流の電流値がゼロであるため、き電線Fが所定温度を超えて発熱していないと開閉状態検知部7が検知する。一方、き電線Fが所定温度を超える時間t0以降では、図6に示す開閉部S1~S6が開状態から閉状態に切り替わり、電気回路Eが通電状態になる。その結果、図9に示すように、電気回路Eを流れる電流の電流値が所定値I0に変化するため、き電線Fが所定温度を超えて発熱したと開閉状態検知部7が検知し、開閉状態検知部7が発熱検知信号を送信装置13に送信する。送信装置13が発熱検知信号を受信装置14に送信すると、作業員が所有する携帯端末装置や信号機器室内の通信機器などに、き電線Fの発熱が告知される。
Next, the operation of the heat generation detection system and heat generation detection device according to the second embodiment of the present invention will be described.
The vertical axis shown in FIG. 9 is current value (A), and the horizontal axis is time (s). Before the time t 0 when the feeder line F reaches the predetermined temperature, the electric circuit E is in a non-energized state because the switch sections S 1 to S 6 shown in FIG. 8 are open. As a result, as shown in FIG. 9, since the current value of the current flowing through the electric circuit E is zero, the open/closed state detector 7 detects that the feeder line F does not generate heat exceeding a predetermined temperature. On the other hand, after the time t 0 when the feeder line F exceeds the predetermined temperature, the opening/closing sections S 1 to S 6 shown in FIG. As a result, as shown in FIG. 9, the current value of the current flowing through the electric circuit E changes to a predetermined value I0 , so that the switching state detector 7 detects that the feeder line F has generated heat exceeding a predetermined temperature. The open/closed state detector 7 transmits a heat generation detection signal to the transmitter 13 . When the transmitting device 13 transmits the heat generation detection signal to the receiving device 14, the portable terminal device owned by the worker and the communication device in the signal equipment room are notified of the heat generation of the feeder line F.

この発明の第2実施形態に係る発熱検知装置には、第1実施形態の効果に加えて、以下に記載するような効果がある。
この第2実施形態では、複数の開閉部S1~S6が並列接続されており、き電線Fの各検知箇所P1~P6から所定温度を超える熱を受けたときに開閉部S1~S6が閉じる。また、この第2実施形態では、き電線Fの各検知箇所P1~P6の開閉部S1~S6の閉状態を開閉状態検知部7が検知することによって、き電線Fの発熱を開閉状態検知部7が検知する。このため、き電線Fの外周部に開閉部S1~S6を連続的に接続して、このき電線Fの温度上昇を多角度多点で検知することができる。また、き電線Fが所定温度を超えたときに開閉部S1~S6が電気回路Eを閉じるため、電気回路Eの通電状態を検知することによってき電線Fの発熱を簡単に検知することができる。
The heat generation detection device according to the second embodiment of the present invention has the following effects in addition to the effects of the first embodiment.
In this second embodiment, a plurality of opening/closing parts S 1 to S 6 are connected in parallel, and when heat exceeding a predetermined temperature is received from each detection point P 1 to P 6 of the feeder line F, the opening/closing part S 1 is closed. ~ S6 closes. In addition, in the second embodiment, the open/closed state detection unit 7 detects the closed state of the open/close portions S 1 to S 6 of the detection points P 1 to P 6 of the feeder line F, thereby detecting heat generation in the feeder line F. The open/close state detector 7 detects. Therefore, by continuously connecting the open/close sections S 1 to S 6 to the outer peripheral portion of the feeder line F, the temperature rise of the feeder line F can be detected at multiple angles and at multiple points. In addition, since the switching parts S 1 to S 6 close the electric circuit E when the temperature of the feeder line F exceeds a predetermined temperature, heat generation of the feeder line F can be easily detected by detecting the energized state of the electric circuit E. can be done.

(第3実施形態)
図10に示す発熱検知部3は、抵抗値の変化を検知することによって、き電線Fの所定温度を超える発熱を検知する。発熱検知部3は、き電線Fの各検知箇所P1~P6から熱を受けて抵抗値が所定値RTHを超えたときに、き電線Fが所定温度を超えて発熱したことを検知する。発熱検知部3は、き電線Fの各検知箇所P1~P6から熱を受けて、き電線Fの多角点多点の温度上昇を検知する。発熱検知部3は、複数の抵抗体R0と、配線部4A~4Dと、電源部5と、コネクタ部6A~6Cと、抵抗値変化検知部15と、発熱判定部16などを備えている。電気回路Eは、複数の抵抗体R0、配線部4A~4C、電源部5及び抵抗値変化検知部15などによって構成されている。
(Third Embodiment)
The heat detection unit 3 shown in FIG. 10 detects heat generation exceeding a predetermined temperature in the feeder line F by detecting a change in resistance value. The heat detection unit 3 detects that the feeder line F has generated heat exceeding a predetermined temperature when the resistance value exceeds a predetermined value R TH due to heat received from each of the detection points P 1 to P 6 of the feeder line F. do. The heat detection unit 3 receives heat from the detection points P 1 to P 6 of the feeder line F and detects temperature rises at multiple points on the feeder line F. FIG. The heat detection section 3 includes a plurality of resistors R 0 , wiring sections 4A to 4D, a power supply section 5, connector sections 6A to 6C, a resistance value change detection section 15, a heat generation determination section 16, and the like. . The electric circuit E is composed of a plurality of resistors R 0 , wiring portions 4A to 4C, a power supply portion 5, a resistance value change detection portion 15, and the like.

抵抗体R0は、き電線Fの各検知箇所P1~P6から熱を受けたときに抵抗値が変化する素子である。抵抗体R0は、直列接続されており、き電線Fの温度が上昇したときに抵抗値が増加する。抵抗体R0は、図11に示すように、温度が上昇したときに抵抗値も増加するような正の抵抗温度係数を示す。ここで、図11に示す縦軸は、抵抗値(Ω)であり、横軸は温度(℃)である。温度T0は、き電線Fが発熱する発熱温度である。所定値RTHは、き電線Fが発熱したときの抵抗値であり、き電線Fが発熱の有無を判定するときの判定基準となる抵抗値である。図10に示す抵抗体R0は、いずれも抵抗温度係数が同一である。抵抗体R0は、例えば、正の抵抗温度係数を示すセメント抵抗器又は正特性サーミスタなどの素子である。抵抗体R0は、図2及び図5に示す開閉部S1~S6と同様に、き電線Fの中心線を中心として中心角60°となるように、き電線Fの外周部の周方向に間隔をあけて複数配置されている。抵抗体R0は、図2及び図5に示す開閉部S1~S6と同様に、き電線Fの外周部に向けて押圧されるように、装着部8A,8Bの内周面から僅かに露出した状態でこの装着部8A,8Bに保持されている。 Resistor R 0 is an element whose resistance value changes when it receives heat from each detection point P 1 to P 6 of feeder line F. FIG. The resistor R 0 is connected in series and increases in resistance when the temperature of the feeder line F rises. Resistor R 0 exhibits a positive temperature coefficient of resistance such that the resistance increases as the temperature increases, as shown in FIG. Here, the vertical axis shown in FIG. 11 is the resistance value (Ω), and the horizontal axis is the temperature (° C.). The temperature T 0 is the temperature at which the feeder line F generates heat. The predetermined value R TH is a resistance value when the feeder line F generates heat, and is a resistance value used as a criterion for determining whether or not the feeder line F generates heat. All resistors R 0 shown in FIG. 10 have the same temperature coefficient of resistance. Resistor R 0 is, for example, an element such as a cement resistor or positive temperature coefficient thermistor that exhibits a positive temperature coefficient of resistance. 2 and 5, the resistor R 0 is arranged around the outer periphery of the feeder line F so that the central angle is 60 ° with the center line of the feeder line F as the center. A plurality of them are arranged at intervals in the direction. Resistor R 0 is slightly extended from the inner peripheral surfaces of mounting portions 8A and 8B so as to be pressed toward the outer peripheral portion of feeder line F in the same manner as opening/closing portions S 1 to S 6 shown in FIGS. are held by the mounting portions 8A and 8B in a state of being exposed to the outside.

図10に示す配線部4A~4Cは、複数の抵抗体R0、電源部5及び抵抗値変化検知部15を電気的に接続する手段である。配線部4A~4Cは、複数の抵抗体R0、電源部5及び抵抗値変化検知部15を直列に接続している。配線部4Dは、抵抗値変化検知部15と発熱判定部16とを電気的に接続する手段であり、配線部4Eは抵抗値変化検知部15と送信装置13とを電気的に接続する手段である。配線部4Eは、配線部4A~4Dと同様のリード線である。 The wiring portions 4A to 4C shown in FIG. 10 are means for electrically connecting the plurality of resistors R 0 , the power supply portion 5 and the resistance value change detection portion 15 . The wiring portions 4A to 4C connect a plurality of resistors R 0 , the power supply portion 5 and the resistance change detection portion 15 in series. The wiring portion 4D is means for electrically connecting the resistance value change detection portion 15 and the heat generation determination portion 16, and the wiring portion 4E is means for electrically connecting the resistance value change detection portion 15 and the transmitter 13. be. The wiring portion 4E is a lead wire similar to the wiring portions 4A to 4D.

送信装置13は、き電線Fが発熱していると発熱検知装置2A,2Bの発熱判定部16が判定したときに、この発熱判定部16の判定結果を図1に示す受信装置14に送信する。送信装置13は、配線部4Dによって発熱判定部16と電気的に接続されている。受信装置14は、発熱検知装置2A,2Bの抵抗値変化検知部15がき電線Fの発熱を検知したときに、この抵抗値変化検知部15の検知結果を送信装置13から受信する。 When the heat generation determination unit 16 of the heat generation detection devices 2A and 2B determines that the feeder line F is generating heat, the transmission device 13 transmits the determination result of the heat generation determination unit 16 to the reception device 14 shown in FIG. . The transmission device 13 is electrically connected to the heat generation determining section 16 by the wiring section 4D. The receiver 14 receives the detection result of the resistance change detector 15 from the transmitter 13 when the resistance change detector 15 of the heat detectors 2A and 2B detects heat generation in the feeder line F. FIG.

抵抗値変化検知部15は、複数の抵抗体R0の抵抗値の変化を検知する手段である。抵抗値変化検知部15は、き電線Fの発熱による各検知箇所P1~P6の抵抗体R0の抵抗値の増加を検知する。抵抗値変化検知部15は、例えば、配線部4Cを流れる電流の電流値を計測することによって、複数の抵抗体R0の合成抵抗値を計測する抵抗計などである。抵抗値変化検知部15は、電源部5から供給される電力によって動作し、所定の時間間隔をあけて抵抗体R0の抵抗値を測定する。抵抗値変化検知部15は、複数の抵抗体R0の抵抗値を抵抗値信号として発熱判定部16に出力する。 The resistance value change detection unit 15 is means for detecting changes in the resistance values of a plurality of resistors R0 . The resistance value change detector 15 detects an increase in the resistance value of the resistor R 0 at each detection point P 1 to P 6 due to heat generation in the feeder line F. FIG. The resistance value change detection unit 15 is, for example, a resistance meter that measures the combined resistance value of a plurality of resistors R0 by measuring the current value of the current flowing through the wiring portion 4C. The resistance value change detection unit 15 is operated by power supplied from the power supply unit 5, and measures the resistance value of the resistor R0 at predetermined time intervals. The resistance value change detection unit 15 outputs the resistance values of the plurality of resistors R 0 to the heat generation determination unit 16 as resistance value signals.

発熱判定部16は、抵抗値変化検知部15の検知結果に基づいて、き電線Fの発熱の有無を判定する手段である。発熱判定部16は、抵抗値変化検知部15が出力する抵抗値信号に基づいて、複数の抵抗体R0の抵抗値(合成抵抗値)が所定値RTHを超えているか否かを判定する。発熱判定部16は、抵抗体R0の抵抗値が所定値RTHを超えているときにはき電線Fが発熱していると判定し、抵抗体R0の抵抗値が所定値RTH以下であるときにはき電線Fが発熱していない判定する。発熱判定部16は、き電線Fが発熱していると判定したときには発熱検知信号を送信装置13に出力する。 The heat generation determination unit 16 is means for determining whether or not the feeder line F generates heat based on the detection result of the resistance value change detection unit 15 . The heat generation determination unit 16 determines whether or not the resistance value (combined resistance value) of the plurality of resistors R 0 exceeds a predetermined value R TH based on the resistance value signal output by the resistance value change detection unit 15 . . The heat determination unit 16 determines that the feeder line F is generating heat when the resistance value of the resistor R0 exceeds a predetermined value RTH , and the resistance value of the resistor R0 is equal to or less than the predetermined value RTH . Sometimes it is determined that the feeder line F does not generate heat. The heat generation determination unit 16 outputs a heat generation detection signal to the transmission device 13 when determining that the feeder line F is generating heat.

次にこの発明の第3実施形態に係る発熱検知システム及び発熱検知装置の動作を説明する。
例えば、接続部Cの内部が腐食してき電線Fが発熱すると、このき電線Fが発生する熱が導電部9を通じて抵抗体R0に伝達する。き電線Fの外周部を囲むように間隔をあけて抵抗体R0が配置されているため、き電線Fが部分的に発熱した場合であっても、抵抗体R0の少なくとも一つにき電線Fから熱が伝達する。き電線Fが発熱して温度が上昇すると抵抗体R0の抵抗値が大きくなるため、抵抗値変化検知部15が複数の抵抗体R0の合成抵抗値を測定し、この複数の抵抗体R0の合成抵抗値が所定値RTHを超えているか否かを発熱判定部16が判定する。複数の抵抗体R0の合成抵抗値が所定値RTHを超えていると発熱判定部16が判定したときには、発熱判定部16が発熱検知信号を送信装置13に送信する。送信装置13が発熱検知信号を受信装置14に送信すると、作業員が所有する携帯端末装置や信号機器室内の通信機器などに、き電線Fの発熱が告知される。
Next, the operation of the heat generation detection system and heat generation detection device according to the third embodiment of the present invention will be described.
For example, when the inside of the connection portion C corrodes and the feeder line F generates heat, the heat generated by the feeder line F is transmitted through the conductive portion 9 to the resistor R 0 . Since the resistors R 0 are arranged at intervals so as to surround the outer periphery of the feeder line F, even if the feeder line F partially heats up, at least one of the resistors R 0 Heat is transferred from the wire F. When the feeder line F heats up and the temperature rises, the resistance value of the resistor R 0 increases. The heat generation determination unit 16 determines whether or not the combined resistance value of 0 exceeds a predetermined value R TH . When the heat generation determination unit 16 determines that the combined resistance value of the plurality of resistors R 0 exceeds the predetermined value R TH , the heat generation determination unit 16 transmits a heat generation detection signal to the transmission device 13 . When the transmitting device 13 transmits the heat generation detection signal to the receiving device 14, the portable terminal device owned by the worker and the communication device in the signal equipment room are notified of the heat generation of the feeder line F.

この発明の第3実施形態に係る発熱検知装置には、第1実施形態及び第2実施形態の効果に加えて、以下に記載するような効果がある。
(1) この第3実施形態では、き電線Fの各検知箇所P1~P6から熱を受けたときに複数の抵抗体R0の抵抗値が変化し、この複数の抵抗体R0の抵抗値の変化を抵抗値変化検知部15が検知する。このため、抵抗値が同一である複数の抵抗体R0の抵抗値の連続的な変化を測定することによって、き電線Fの発熱を簡単に検知することができる。
The heat generation detection device according to the third embodiment of the present invention has the following effects in addition to the effects of the first and second embodiments.
(1) In the third embodiment, the resistance values of the plurality of resistors R 0 change when heat is received from the detection points P 1 to P 6 of the feeder line F, and the resistance values of the plurality of resistors R 0 change. A resistance value change detector 15 detects a change in the resistance value. Therefore, heat generation in the feeder line F can be easily detected by measuring continuous changes in the resistance values of a plurality of resistors R0 having the same resistance value.

(2) この第3実施形態では、複数の抵抗体R0が直列接続されており、き電線Fの温度が上昇したときにこの複数の抵抗体R0の抵抗値が増加し、き電線Fの発熱によるこの抵抗体R0の抵抗値の増加を抵抗値変化検知部15が検知する。このため、き電線Fの外周部に抵抗体R0を連続的に接続して、この抵抗体R0の抵抗温度係数による変化を用いて、このき電線Fの温度上昇を多角度多点で検知することができる。 (2) In the third embodiment, a plurality of resistors R 0 are connected in series, and when the temperature of the feeder line F rises, the resistance of the plurality of resistors R 0 increases and the feeder line F The resistance value change detector 15 detects the increase in the resistance value of the resistor R 0 due to the heat generation. For this reason, a resistor R0 is continuously connected to the outer periphery of the feeder line F, and the temperature rise of the feeder line F is measured at multiple angles and at multiple points using the change due to the temperature coefficient of resistance of the resistor R0 . can be detected.

(第4実施形態)
図10に示す発熱検知部3は、き電線Fの各検知箇所P1~P6から熱を受けて抵抗値が所定値RTHを下回ったときに、き電線Fが所定温度を超えて発熱したことを検知する。抵抗体R0は、図11に示す抵抗体R0とは異なり、図12に示すようにき電線Fの温度が上昇したときに抵抗値が低下する。抵抗体R0は、温度が上昇したときに抵抗値が低下するような負の抵抗温度係数を示す。ここで、図12に示す縦軸は、抵抗値(Ω)であり、横軸は温度(℃)である。抵抗体R0は、いずれも抵抗温度係数が同一である。抵抗体R0は、例えば、負の抵抗温度係数を示す負特性サーミスタなどの素子である。
(Fourth embodiment)
The heat detection unit 3 shown in FIG. 10 receives heat from the detection points P 1 to P 6 of the feeder line F, and when the resistance value falls below a predetermined value R TH , the feeder line F exceeds a predetermined temperature and generates heat. detect what has happened. Unlike the resistor R 0 shown in FIG. 11, the resistance value of the resistor R 0 decreases when the temperature of the feeder line F rises as shown in FIG. Resistor R 0 exhibits a negative temperature coefficient of resistance such that its resistance decreases as temperature increases. Here, the vertical axis shown in FIG. 12 is the resistance value (Ω), and the horizontal axis is the temperature (° C.). All resistors R 0 have the same temperature coefficient of resistance. The resistor R 0 is, for example, an element such as a negative temperature coefficient thermistor that exhibits a negative temperature coefficient of resistance.

図10に示す抵抗値変化検知部15は、き電線Fの発熱による各検知箇所P1~P6の抵抗体R0の抵抗値の低下を検知する。発熱判定部16は、複数の抵抗体R0の抵抗値(合成抵抗値)が所定値RTHを下回っているか否かを判定する。発熱判定部16は、複数の抵抗体R0の抵抗値が所定値RTHを下回っているときにはき電線Fが発熱していると判定し、複数の抵抗体R0の抵抗値が所定値RTH以上であるときにはき電線Fが発熱していないと判定する。 The resistance value change detector 15 shown in FIG. 10 detects a decrease in the resistance value of the resistor R 0 at each detection point P 1 to P 6 due to heat generation in the feeder line F. FIG. The heat generation determination unit 16 determines whether or not the resistance value (combined resistance value) of the multiple resistors R 0 is below a predetermined value R TH . The heat determination unit 16 determines that the feeder line F is generating heat when the resistance values of the plurality of resistors R 0 are lower than the predetermined value R TH , and the resistance values of the plurality of resistors R 0 exceed the predetermined value R When it is equal to or higher than TH , it is determined that the feeder line F does not generate heat.

次にこの発明の第4実施形態に係る発熱検知システム及び発熱検知装置の動作を説明する。
図12に示すように、き電線Fが発熱して温度が上昇すると抵抗体R0の抵抗値が小さくなるため、抵抗値変化検知部15が抵抗体R0の抵抗値を検知し、抵抗体R0の抵抗値が所定値RTHを下回るか否かを発熱判定部16が判定する。抵抗体R0の抵抗値が所定値RTHを下回ると発熱判定部16が判定したときには、発熱判定部16が発熱検知信号を送信装置13に送信する。送信装置13が発熱検知信号を受信装置14に送信すると、作業員が所有する携帯端末装置や信号機器室内の通信機器などに、き電線Fの発熱が告知される。この第4実施形態には、第1実施形態から~第3実施形態と同様の効果がある。
Next, the operation of the heat generation detection system and heat generation detection device according to the fourth embodiment of the present invention will be described.
As shown in FIG. 12, when the feeder line F generates heat and the temperature rises, the resistance value of the resistor R 0 decreases. The heat generation determination unit 16 determines whether or not the resistance value of R 0 is below a predetermined value R TH . When the heat generation determination unit 16 determines that the resistance value of the resistor R 0 is below the predetermined value R TH , the heat generation determination unit 16 transmits a heat generation detection signal to the transmission device 13 . When the transmitting device 13 transmits the heat generation detection signal to the receiving device 14, the portable terminal device owned by the worker and the communication device in the signal equipment room are notified of the heat generation of the feeder line F. This fourth embodiment has the same effects as those of the first to third embodiments.

(第5実施形態)
図13に示す発熱検知部3は、抵抗値の変化を検知することによって、き電線Fの所定温度を超える発熱を検知するとともに、抵抗値の変化量ΔRを検知することによって、き電線Fの発熱箇所を検知する。発熱検知部3は、複数の抵抗体R1~R6と、配線部4A~4Eと、電源部5と、コネクタ部6A~6Cと、抵抗値変化検知部15と、発熱判定部16などを備えている。
(Fifth embodiment)
The heat detection unit 3 shown in FIG. 13 detects heat generation exceeding a predetermined temperature in the feeder line F by detecting a change in the resistance value, and detects the amount of change ΔR in the resistance value of the feeder line F. Detect hot spots. The heat detection section 3 includes a plurality of resistors R 1 to R 6 , wiring sections 4A to 4E, a power supply section 5, connector sections 6A to 6C, a resistance value change detection section 15, a heat generation determination section 16, and the like. I have.

抵抗体R1~R6は、図15に示すように、き電線Fの各検知箇所P1~P6から熱を受けたときの抵抗値の変化量ΔRが異なる素子である。抵抗体R1~R6は、図13に示すように、直列接続されており、図14及び図15に示すようにき電線Fの温度が上昇したときに抵抗値が指数関数的に増加する。抵抗体R1~R6は、図14に示すように、温度が上昇したときに抵抗値も増加するような正の抵抗温度係数を示す。ここで、図14に示す縦軸は、抵抗値(Ω)であり、横軸は温度(℃)であり、グラフは温度と抵抗値との関係を表す片対数グラフである。基準温度Trefは、通常時(非発熱時)のき電線Fの温度である。 As shown in FIG. 15, the resistors R 1 to R 6 are elements having different amounts of change ΔR in resistance value when receiving heat from the detection points P 1 to P 6 of the feeder line F. FIG. The resistors R 1 to R 6 are connected in series as shown in FIG. 13, and the resistance increases exponentially when the temperature of the feeder line F rises as shown in FIGS. 14 and 15. . Resistors R 1 -R 6 exhibit a positive temperature coefficient of resistance such that the resistance increases as the temperature increases, as shown in FIG. Here, the vertical axis shown in FIG. 14 is the resistance value (Ω), the horizontal axis is the temperature (° C.), and the graph is a semilogarithmic graph showing the relationship between the temperature and the resistance value. The reference temperature T ref is the temperature of the feeder line F during normal operation (when no heat is generated).

図13に示す抵抗体R1~R6は、図15に示すように、いずれも抵抗温度係数が異なる。抵抗体R1~R6は、例えば、図14に示すように、基準温度Trefにおいて抵抗値が1Ω、10Ω、100Ω、1kΩ、10kΩ、100kΩにそれぞれ設定されている。抵抗体R1~R6は、例えば、正の抵抗温度係数を示す金属抵抗器又は正特性サーミスタなどの素子である。抵抗体R1~R6は、図2及び図5に示す開閉部S1~S6と同様に、き電線Fの中心線を中心として中心角60°となるように、き電線Fの外周部の周方向に間隔をあけて複数配置されている。抵抗体R1~R6は、図2及び図5に示す開閉部S1~S6と同様に、き電線Fの外周部に向けて押圧されるように、装着部8A,8Bの内周面から僅かに露出した状態でこの装着部8A,8Bに保持されている。配線部4A~4Cは、複数の抵抗体R1~R6、電源部5及び抵抗値変化検知部15を電気的に接続する手段である。配線部4A~4Cは、複数の抵抗体R1~R6、電源部5及び抵抗値変化検知部15を直列に接続している。 Resistors R 1 to R 6 shown in FIG. 13 all have different temperature coefficients of resistance as shown in FIG. For example, as shown in FIG. 14, the resistors R 1 to R 6 are set to have resistance values of 1Ω, 10Ω, 100Ω, 1kΩ, 10kΩ, and 100kΩ at the reference temperature T ref . The resistors R 1 to R 6 are elements such as metal resistors or positive temperature coefficient thermistors exhibiting a positive temperature coefficient of resistance. Resistors R 1 to R 6 are arranged on the outer periphery of the feeder line F so as to form a central angle of 60° around the center line of the feeder line F, similar to the opening/closing parts S 1 to S 6 shown in FIGS. A plurality of them are arranged at intervals in the circumferential direction of the part. The resistors R 1 to R 6 are pressed toward the outer periphery of the feeder line F in the same manner as the opening/closing portions S 1 to S 6 shown in FIGS. It is held by the mounting portions 8A and 8B while being slightly exposed from the surface. The wiring portions 4A to 4C are means for electrically connecting the plurality of resistors R 1 to R 6 , the power supply portion 5 and the resistance change detection portion 15 . The wiring sections 4A to 4C connect a plurality of resistors R 1 to R 6 , the power supply section 5 and the resistance change detection section 15 in series.

抵抗値変化検知部15は、複数の抵抗体R1~R6の抵抗値の変化を検知する手段である。抵抗値変化検知部15は、き電線Fの検知箇所P1~P6毎に発熱による抵抗体R1~R6の抵抗値の増加を検知する。抵抗値変化検知部15は、例えば、配線部4Cを流れる電流の電流値を計測することによって、複数の抵抗体R1~R6の合成抵抗値を計測する抵抗計などである。抵抗値変化検知部15は、電源部5から供給される電力によって動作し、所定の時間間隔をあけて抵抗体R1~R6の抵抗値を測定する。抵抗値変化検知部15は、複数の抵抗体R1~R6の抵抗値を抵抗値信号として発熱判定部16に出力する。 The resistance value change detection unit 15 is means for detecting changes in the resistance values of the plurality of resistors R 1 to R 6 . The resistance value change detection unit 15 detects an increase in the resistance value of the resistors R 1 to R 6 due to heat generation at each of the detection points P 1 to P 6 of the feeder line F. FIG. The resistance value change detection unit 15 is, for example, a resistance meter that measures the combined resistance value of the plurality of resistors R 1 to R 6 by measuring the current value of the current flowing through the wiring portion 4C. The resistance value change detection unit 15 is operated by power supplied from the power supply unit 5 and measures the resistance values of the resistors R 1 to R 6 at predetermined time intervals. The resistance value change detection unit 15 outputs the resistance values of the plurality of resistors R 1 to R 6 to the heat generation determination unit 16 as resistance value signals.

発熱判定部16は、き電線Fの発熱の有無とこのき電線Fの発熱箇所とを判定する手段である。発熱判定部16は、抵抗値変化検知部15の検知結果に基づいて、き電線Fの発熱の有無とこのき電線Fの発熱箇所とを判定する。発熱判定部16は、複数の抵抗体R1~R6の抵抗値(合成抵抗値)が所定値RTHを超えているか否かを判定する。発熱判定部16は、複数の抵抗体R1~R6の抵抗値が所定値RTHを超えているときにはき電線Fが発熱していると判定し、複数の抵抗体R1~R6の抵抗値が所定値RTH以下であるときにはき電線Fが発熱していないと判定する。発熱判定部16は、複数の抵抗体R1~R6の抵抗値の変化量ΔRに基づいて、き電線Fの発熱箇所を判定する。発熱判定部16は、図15に示すように、抵抗体R1~R6の抵抗値の変化量ΔR1~ΔR6が異なるため、き電線Fが発熱したときの抵抗体R1~R6の抵抗値の変化から検知箇所P1~P6のいずれが発熱したかを判定する。発熱判定部16は、き電線Fが発熱していると判定したときには検知箇所P1~P6毎の発熱の有無を発熱検知信号として送信装置13に出力する。 The heat generation determination unit 16 is a means for determining whether or not the feeder line F generates heat and where the feeder line F generates heat. The heat generation determination unit 16 determines whether or not the feeder line F generates heat and the location of the heat generation in the feeder line F based on the detection result of the resistance value change detector 15 . The heat determination unit 16 determines whether or not the resistance value (combined resistance value) of the resistors R 1 to R 6 exceeds a predetermined value R TH . The heat determination unit 16 determines that the feeder line F is generating heat when the resistance values of the resistors R 1 to R 6 exceed a predetermined value R TH , and determines that the resistances of the resistors R 1 to R 6 When the resistance value is equal to or less than the predetermined value R TH , it is determined that the feeder line F is not generating heat. The heat generation determination unit 16 determines the heat generation locations of the feeder line F based on the amount of change ΔR in the resistance values of the plurality of resistors R 1 to R 6 . As shown in FIG. 15, the heat generation determination unit 16 determines the amount of change ΔR 1 to ΔR 6 in the resistance values of the resistors R 1 to R 6 , so that the resistors R 1 to R 6 It is determined which of the detection points P 1 to P 6 has generated heat from the change in the resistance value of . When the heat generation determination unit 16 determines that the feeder line F is generating heat, it outputs the presence or absence of heat generation at each of the detection points P 1 to P 6 to the transmission device 13 as a heat generation detection signal.

次にこの発明の第5実施形態に係る発熱検知システム及び発熱検知装置の動作を説明する。
例えば、接続部Cの内部が腐食してき電線Fが発熱すると、このき電線Fが発生する熱が導電部9を通じて抵抗体R1~R6に伝達する。き電線Fの外周部を囲むように間隔をあけて抵抗体R1~R6が配置されているため、き電線Fが部分的に発熱した場合であっても、抵抗体R1~R6の少なくとも一つにき電線Fから熱が伝達する。き電線Fが発熱して温度が上昇すると、抵抗体R1~R6の合成抵抗値が大きくなるため、抵抗値変化検知部15が抵抗体R1~R6の合成抵抗値を測定し、抵抗体R1~R6の合成抵抗値が所定値RTHを超えているか否かを発熱判定部16が判定する。
Next, the operation of the heat generation detection system and heat generation detection device according to the fifth embodiment of the present invention will be described.
For example, when the inside of the connection portion C corrodes and the feeder line F generates heat, the heat generated by the feeder line F is transmitted through the conductive portion 9 to the resistors R 1 to R 6 . Since the resistors R 1 to R 6 are arranged at intervals so as to surround the outer periphery of the feeder line F, even if the feeder line F partially heats up, the resistors R 1 to R 6 Heat is transferred from the feeder line F to at least one of the When the feeder line F heats up and the temperature rises, the combined resistance value of the resistors R 1 to R 6 increases . A heat generation determination unit 16 determines whether or not the combined resistance value of the resistors R 1 to R 6 exceeds a predetermined value R TH .

図15に示すように、抵抗体R1~R6の抵抗温度係数がそれぞれ異なるため、き電線Fの温度が上昇した後の各抵抗体R1~R6の抵抗値の変化量ΔR1~ΔR6もそれぞれ異なる。例えば、通常時のき電線Fの温度が基準温度Trefから上昇して、図15に示す抵抗体R1~R6の抵抗値がそれぞれ10%増加したと仮定する。この場合には、抵抗体R1が抵抗値1Ωから1.1Ωに0.1Ω増加し、抵抗体R2が抵抗値10Ωから11Ωに1Ω増加し、抵抗体R3が抵抗値100Ωから110Ωに1Ω増加し、抵抗体R4が抵抗値1kΩから1.1kΩに100Ω増加し、抵抗体R5が抵抗値10kΩから11kΩに1kΩ増加し、抵抗体R6が抵抗値100kΩから110kΩに10kΩ増加する。図15に示すように、き電線Fの温度が上昇する前に比べて、き電線Fの温度が上昇した後では、抵抗体R1~R6の抵抗値の変化量ΔR1~ΔR6が抵抗体R1から抵抗体R6に順に大きくなっている。例えば、抵抗体R1については基準温度Trefから温度T0に上昇すると、抵抗値の変化量ΔR1が僅かであるが、抵抗体R6については基準温度Trefから温度T0に上昇すると抵抗値の変化量ΔR6が極めて大きい。 As shown in FIG. 15, since the resistors R 1 to R 6 have different temperature coefficients of resistance, the amount of change in resistance value ΔR 1 to R 6 of each resistor R 1 to R 6 after the temperature of the feeder line F rises. ΔR 6 is also different. For example, assume that the temperature of the feeder line F during normal operation rises from the reference temperature T ref and the resistance values of the resistors R 1 to R 6 shown in FIG. 15 increase by 10%. In this case, resistor R1 increases from 1Ω to 1.1Ω by 0.1Ω , resistor R2 increases from 10Ω to 11Ω by 1Ω, and resistor R3 increases from 100Ω to 110Ω by 1Ω. Then, the resistance value of resistor R4 increases from 1 kΩ to 1.1 kΩ by 100Ω, the resistance value of resistor R5 increases from 10 kΩ to 11 kΩ by 1 kΩ, and the resistance value of resistor R6 increases from 100 kΩ to 110 kΩ by 10 kΩ. As shown in FIG. 15, the amounts of change ΔR 1 to ΔR 6 in the resistance values of the resistors R 1 to R 6 after the temperature of the feeder line F rises compared to before the temperature of the feeder line F rises. It increases in order from the resistor R1 to the resistor R6 . For example, when the temperature rises from the reference temperature T ref to the temperature T 0 for the resistor R 1 , the amount of change ΔR 1 in the resistance value is small. The amount of change ΔR 6 in the resistance value is extremely large.

このため、図13に示す複数の検知箇所P1~P6でき電線Fが発熱したときには、それぞれの抵抗体R1~R6の抵抗温度係数に特有の測定値が合成抵抗値として抵抗値変化検知部15が測定する。その結果、発熱箇所に対応する複数の抵抗体R1~R6の抵抗値の合成抵抗値(加算値)を抵抗値変化検知部15が測定するため、いずれの検知箇所P1~P6でき電線Fが発熱したかを発熱判定部16が判定する。抵抗体R1~R6の合成抵抗値が所定値RTHを超えていると発熱判定部16が判定したときには、発熱の有無を発熱検知信号として発熱判定部16が送信装置13に送信する。また、検知箇所P1~P6毎の発熱の有無を発熱判定部16が判定したときには、検知箇所P1~P6毎の発熱の有無を発熱検知信号として発熱判定部16が送信装置13に送信する。送信装置13が発熱検知信号を受信装置14に送信すると、作業員が所有する携帯端末装置や信号機器室内の通信機器などに、き電線Fの発熱とこのき電線Fの発熱箇所とが告知される。 Therefore, when a plurality of detection points P 1 to P 6 shown in FIG. 13 is heated, the measured value specific to the resistance temperature coefficient of each resistor R 1 to R 6 changes as a combined resistance value. The detection unit 15 measures. As a result, since the resistance value change detection unit 15 measures the combined resistance value (addition value) of the resistance values of the plurality of resistors R 1 to R 6 corresponding to the heat generation locations, any of the detection locations P 1 to P 6 can be detected. The heat generation determination unit 16 determines whether the electric wire F has generated heat. When the heat generation determination unit 16 determines that the combined resistance value of the resistors R 1 to R 6 exceeds the predetermined value R TH , the heat generation determination unit 16 transmits the presence or absence of heat generation to the transmission device 13 as a heat generation detection signal. Further, when the heat generation determination unit 16 determines whether or not heat is generated at each of the detection points P 1 to P 6 , the heat generation determination unit 16 transmits the heat generation detection signal to the transmission device 13 based on the heat generation detection signal at each of the detection points P 1 to P 6 . Send. When the transmitting device 13 transmits the heat generation detection signal to the receiving device 14, the portable terminal device owned by the worker and the communication device in the signal equipment room are notified of the heat generation of the feeder line F and the location of the heat generation of the feeder line F. be.

この発明の第5実施形態に係る発熱検知装置には、第1実施形態~第4実施形態の効果に加えて、以下に記載するような効果がある。
(1) この第5実施形態では、き電線Fの各検知箇所P1~P6から複数の抵抗体R1~R6が熱を受けたときに、この複数の抵抗体R1~R6の抵抗値の変化量ΔRが異なり、この複数の抵抗体R1~R6の抵抗値の変化を抵抗値変化検知部15が検知する。その結果、抵抗体R1~R6の全体の抵抗値を測定するだけで、発熱箇所が検知箇所P1~P6のいずれであるかを容易に特定することができる。また、個々の抵抗体R1~R6の抵抗値の変化量ΔRが異なるため、抵抗体R1~R6毎に個別にセンシングすることができるとともに、検知箇所P1~P6毎にき電線Fの発熱の有無を評価することができる。さらに、複数の抵抗体R1~R6の抵抗値の変化量ΔRを監視することによって、き電線Fが発熱する前にき電線Fの温度上昇を事前に把握することができる。
The heat generation detection device according to the fifth embodiment of the present invention has the following effects in addition to the effects of the first to fourth embodiments.
(1) In the fifth embodiment, when the plurality of resistors R 1 to R 6 receive heat from the detection points P 1 to P 6 of the feeder line F, the plurality of resistors R 1 to R 6 The amount of change ΔR in the resistance values of the resistors R 1 to R 6 is different, and the resistance change detector 15 detects the changes in the resistance values of the plurality of resistors R 1 to R 6 . As a result, it is possible to easily specify which one of the detection points P 1 to P 6 is the heat generating point, simply by measuring the resistance value of the resistors R 1 to R 6 as a whole. In addition, since the amount of change ΔR in the resistance value of each of the resistors R 1 to R 6 is different, each of the resistors R 1 to R 6 can be individually sensed, and each detection point P 1 to P 6 can be detected. Whether or not the electric wire F generates heat can be evaluated. Furthermore, by monitoring the amount of change ΔR in the resistance values of the plurality of resistors R 1 to R 6 , the temperature rise of the feeder line F can be grasped in advance before the feeder line F generates heat.

(2) この第5実施形態では、複数の抵抗体R1~R6が直列接続されており、き電線Fの温度が上昇したときに、複数の抵抗体R1~R6の抵抗値が指数関数的に増加する。また、この第5実施形態では、き電線Fの検知箇所P1~P6毎に発熱による抵抗体R1~R6の抵抗値の増加を抵抗値変化検知部15が検知する。このため、温度によって抵抗値が指数関数的に変化する抵抗体R1~R6を用いて、多角度多点の温度上昇を検知箇所P1~P6毎に検知することができる。例えば、き電線Fの外周部に抵抗体R1~R6を連続的に接続して、この抵抗体R1~R6の指数関数的に変化する抵抗値を用いるとともに、この抵抗体R1~R6の温度係数による変化を利用して、き電線Fの温度上昇を多角度多点で検知することができる。 (2) In the fifth embodiment, the plurality of resistors R 1 to R 6 are connected in series, and when the temperature of the feeder line F rises, the resistance values of the plurality of resistors R 1 to R 6 increase exponentially. Further, in the fifth embodiment, the resistance value change detection unit 15 detects an increase in the resistance value of the resistors R 1 to R 6 due to heat generation at each of the detection points P 1 to P 6 of the feeder line F. FIG. Therefore, by using resistors R 1 to R 6 whose resistance values change exponentially with temperature, it is possible to detect temperature rises at multiple angles and points at each detection point P 1 to P 6 . For example, resistors R 1 to R 6 are continuously connected to the outer circumference of the feeder line F, and the exponentially changing resistance values of the resistors R 1 to R 6 are used . By using the change due to the temperature coefficient of ~ R6 , the temperature rise of the feeder line F can be detected at multiple angles and multiple points.

(第6実施形態)
図13に示す抵抗体R1~R6は、図14及び図15に示す抵抗体R1~R6とは異なり、図16に示すようにき電線Fの温度が上昇したときに抵抗値が指数関数的に低下する。抵抗体R1~R6は、図16に示すように、温度が上昇したときに抵抗値が低下するような負の抵抗温度係数を示す。ここで、図16に示す縦軸は、抵抗値(Ω)であり、横軸は温度(℃)であり、グラフは温度と抵抗値との関係を表す片対数グラフである。温度T0は、き電線Fが発熱する温度である。図16に示す抵抗体R1~R6は、いずれも抵抗温度係数が異なる。抵抗体R1~R6は、例えば、負の抵抗温度係数を示す負特性サーミスタなどの素子である。
(Sixth embodiment)
Unlike the resistors R 1 to R 6 shown in FIGS. 14 and 15, the resistors R 1 to R 6 shown in FIG. 13 change their resistance values as shown in FIG. Decrease exponentially. As shown in FIG. 16, the resistors R 1 -R 6 exhibit a negative temperature coefficient of resistance such that the resistance decreases as the temperature rises. Here, the vertical axis shown in FIG. 16 is the resistance value (Ω), the horizontal axis is the temperature (° C.), and the graph is a semilogarithmic graph showing the relationship between the temperature and the resistance value. The temperature T 0 is the temperature at which the feeder line F generates heat. Resistors R 1 to R 6 shown in FIG. 16 all have different temperature coefficients of resistance. The resistors R 1 to R 6 are elements such as negative characteristic thermistors exhibiting a negative temperature coefficient of resistance, for example.

図13に示す抵抗値変化検知部15は、き電線Fの各検知箇所P1~P6の発熱による抵抗体R1~R6の抵抗値の低下を検知する。発熱判定部16は、複数の抵抗体R1~R6の抵抗値(合成抵抗値)が所定値RTHを下回っているか超えているか否かを判定する。発熱判定部16は、複数の抵抗体R1~R6の抵抗値が所定値RTHを下回っているときにはき電線Fが発熱していると判定し、複数の抵抗体R1~R6の抵抗値が所定値RTHを超えているときにはき電線Fが発熱していないと判定する。 The resistance value change detection unit 15 shown in FIG. 13 detects a decrease in the resistance values of the resistors R 1 to R 6 due to heat generation at the respective detection points P 1 to P 6 of the feeder line F. FIG. The heat generation determination unit 16 determines whether the resistance value (combined resistance value) of the plurality of resistors R 1 to R 6 is below or above a predetermined value R TH . A heat generation determination unit 16 determines that the feeder line F is generating heat when the resistance values of the plurality of resistors R 1 to R 6 are below a predetermined value R TH . When the resistance value exceeds the predetermined value R TH , it is determined that the feeder line F does not generate heat.

次にこの発明の第6実施形態に係る発熱検知システム及び発熱検知装置の動作を説明する。
き電線Fが発熱して温度が上昇すると、抵抗体R1~R6の合成抵抗値が小さくなるため、抵抗値変化検知部15が抵抗体R1~R6の合成抵抗値を検知し、抵抗体R1~R6の抵抗値が所定値RTHを下回るか否かを発熱判定部16が判定する。また、それぞれの抵抗体R1~R6の抵抗温度係数に特有の測定値が合成抵抗値として抵抗値変化検知部15に測定されて、いずれの検知箇所P1~P6でき電線Fが発熱したかを発熱判定部16が判定する。検知箇所P1~P6毎の発熱の有無を発熱検知信号として発熱判定部16が送信装置13に送信し、送信装置13が発熱検知信号を受信装置14に送信すると、作業員が所有する携帯端末装置や信号機器室内の通信機器などに、き電線Fの発熱とこのき電線Fの発熱箇所とが告知される。この第6実施形態には、第1実施形態から~第5実施形態と同様の効果がある。
Next, the operation of the heat generation detection system and heat generation detection device according to the sixth embodiment of the present invention will be described.
When the feeder line F heats up and the temperature rises, the combined resistance value of the resistors R 1 to R 6 decreases . A heat generation determination unit 16 determines whether the resistance values of the resistors R 1 to R 6 are below a predetermined value R TH . In addition, a measured value specific to the temperature coefficient of resistance of each of the resistors R 1 to R 6 is measured as a combined resistance value by the resistance value change detection unit 15, and any of the detection points P 1 to P 6 is generated. The heat generation determination unit 16 determines whether the heat generation has occurred. The presence or absence of heat generation at each of the detection points P 1 to P 6 is transmitted as a heat generation detection signal by the heat generation determination unit 16 to the transmission device 13, and when the transmission device 13 transmits the heat generation detection signal to the reception device 14, the mobile phone owned by the worker is transmitted. The heat generation of the feeder line F and the location of the heat generation on the feeder line F are notified to the terminal device, the communication equipment in the signal equipment room, and the like. This sixth embodiment has the same effects as those of the first to fifth embodiments.

(第7実施形態)
図17に示す発熱検知部3は、抵抗値の変化を検知することによって、き電線Fの所定温度を超える発熱を検知するとともに、抵抗値の変化量ΔRを検知することによって、き電線Fの発熱箇所を検知する。発熱検知部3は、き電線Fの各検知箇所P1~P6から熱を受けて、き電線Fの多角点多点の温度上昇を検知する。発熱検知部3は、図17に示すように、複数の開閉部S1~S6と、複数の抵抗体R1~R6と、配線部4A~4Eと、電源部5と、コネクタ部6A~6Cと、開閉状態検知部7と、抵抗値変化検知部15と、発熱判定部16などを備えている。
(Seventh embodiment)
The heat detection unit 3 shown in FIG. 17 detects heat generation exceeding a predetermined temperature in the feeder line F by detecting a change in the resistance value, and detects the amount of change ΔR in the resistance value of the feeder line F. Detect hot spots. The heat detection unit 3 receives heat from the detection points P 1 to P 6 of the feeder line F and detects temperature rises at multiple points on the feeder line F. FIG. As shown in FIG. 17, the heat detection section 3 includes a plurality of opening/closing sections S 1 to S 6 , a plurality of resistors R 1 to R 6 , wiring sections 4A to 4E, a power supply section 5, and a connector section 6A. 6C, an open/closed state detector 7, a resistance change detector 15, a heat generation determiner 16, and the like.

電気回路Eは、複数の開閉部S1~S6、複数の抵抗体R1~R6、配線部4A~4D、電源部5、開閉状態検知部7、抵抗値変化検知部15及び発熱判定部16などによって構成されている。電気回路Eは、き電線Fが所定温度以下であるときには、開閉部S1~S6のいずれも開いており非通電状態を維持している。一方、電気回路Eは、き電線Fが所定温度を超えて発熱したときには、開閉部S1~S6の少なくとも一つが閉じて非通電状態から通電状態に切り替わる。 The electric circuit E includes a plurality of opening/closing sections S 1 to S 6 , a plurality of resistors R 1 to R 6 , wiring sections 4A to 4D, a power supply section 5, an open/close state detection section 7, a resistance value change detection section 15, and heat generation determination. 16 and the like. In the electric circuit E, when the temperature of the feeder line F is lower than a predetermined temperature, all of the switching portions S 1 to S 6 are open to maintain a non-energized state. On the other hand, in the electric circuit E, when the feeder line F generates heat exceeding a predetermined temperature, at least one of the opening/closing sections S 1 to S 6 is closed to switch from the non-energized state to the energized state.

開閉部S1~S6は、図6に示す開閉部S1~S6とは異なり、複数の抵抗体R1~R6毎に並列接続されており、き電線Fの各検知箇所P1~P6から所定温度を超える熱を受けたときに閉じる。開閉部S1~S6は、図17に示すように、通常時には電気接点を開いているa接点として機能し、き電線Fが所定温度以下であるときには電気接点を開いており、き電線Fが所定温度を超えたときには電気接点を閉じる。開閉部S1~S6は、図6に示す開閉部S1~S6と同様に、き電線Fの中心線を中心として中心角60°となるように、き電線Fの外周部の周方向に間隔をあけて複数配置されている。配線部4A,4Bは、開閉部S1~S6と抵抗体R1~R6とをそれぞれ並列に接続している。配線部4Cは、並列に接続された開閉部S1~S6及び抵抗体R1~R6と、並列に接続された開閉状態検知部7及び抵抗値変化検知部15と、電源部5とを直列に接続している。 Different from the switching parts S 1 to S 6 shown in FIG . Closes when heat exceeding a predetermined temperature is received from ~P6. As shown in FIG. 17, the opening/closing sections S 1 to S 6 normally function as a-contacts that open electrical contacts, and open the electrical contacts when the temperature of the feeder line F is below a predetermined temperature. closes the electrical contact when the temperature exceeds a predetermined temperature. The opening/closing parts S 1 to S 6 , like the opening/closing parts S 1 to S 6 shown in FIG. A plurality of them are arranged at intervals in the direction. The wiring portions 4A and 4B connect the switching portions S 1 to S 6 and the resistors R 1 to R 6 in parallel, respectively. The wiring portion 4C includes the opening/closing portions S 1 to S 6 and the resistors R 1 to R 6 connected in parallel, the opening/closing state detection portion 7 and the resistance value change detection portion 15 connected in parallel, and the power supply portion 5. are connected in series.

開閉状態検知部7は、き電線Fの各検知箇所P1~P6の開閉部S1~S6の閉状態を検知することによってき電線Fの発熱を検知する。開閉状態検知部7は、き電線Fが所定温度を超えて開閉部S1~S6が閉じて、電気回路Eが非通電状態から通電状態に切り替わったときに、発熱検知信号を送信装置13に出力する。抵抗体R1~R6は、図14及び図16に示すようにき電線Fの温度が上昇したときに抵抗値が指数関数的に増加又は低下する。抵抗体R1~R6は、温度が上昇したときに抵抗値が増加又は低下するような抵抗温度係数を示す。 The switching state detector 7 detects the heat generation of the feeder line F by detecting the closed states of the switchers S 1 to S 6 of the respective detection points P 1 to P 6 of the feeder line F. FIG. The switching state detection unit 7 transmits a heat generation detection signal to the transmitting device 13 when the feeder line F exceeds a predetermined temperature and the switching portions S 1 to S 6 are closed and the electric circuit E is switched from a non-energized state to an energized state. output to As shown in FIGS. 14 and 16, the resistance values of the resistors R 1 to R 6 exponentially increase or decrease when the temperature of the feeder line F rises. Resistors R 1 -R 6 exhibit temperature coefficients of resistance such that their resistance increases or decreases as temperature increases.

抵抗値変化検知部15は、き電線Fの検知箇所P1~P6毎に発熱による抵抗体R1~R6の抵抗値の増加又は減少を検知する。抵抗値変化検知部15は、複数の抵抗体R1~R6の抵抗値を抵抗値信号として発熱判定部16に出力する。発熱判定部16は、複数の抵抗体R1~R6の抵抗値の変化量ΔRに基づいて、き電線Fの発熱箇所を判定する。発熱判定部16は、例えば、図15に示すように、抵抗体R1~R6の抵抗値の変化量ΔR1~ΔR6が異なるため、き電線Fが発熱したときの抵抗体R1~R6の抵抗値の変化から検知箇所P1~P6のいずれが発熱したかを判定する。発熱判定部16は、検知箇所P1~P6毎の発熱の有無を発熱検知信号として送信装置13に出力する。 The resistance value change detection unit 15 detects an increase or decrease in the resistance value of the resistors R 1 to R 6 due to heat generation at each of the detection points P 1 to P 6 of the feeder line F. FIG. The resistance value change detection unit 15 outputs the resistance values of the plurality of resistors R 1 to R 6 to the heat generation determination unit 16 as resistance value signals. The heat generation determination unit 16 determines the heat generation locations of the feeder line F based on the amount of change ΔR in the resistance values of the plurality of resistors R 1 to R 6 . For example, as shown in FIG. 15, the heat generation determining unit 16 determines the amount of change ΔR 1 to ΔR 6 in the resistance values of the resistors R 1 to R 6 , so that when the feeder line F generates heat, the resistors R 1 to It is determined which of the detection points P 1 to P 6 has generated heat from the change in the resistance value of R 6 . The heat generation determination unit 16 outputs the presence or absence of heat generation at each of the detection points P 1 to P 6 to the transmission device 13 as a heat generation detection signal.

次にこの発明の第7実施形態に係る発熱検知システム及び発熱検知装置の動作を説明する。
き電線Fが発熱して温度が上昇すると、抵抗体R1~R6の合成抵抗値が変化する。それぞれの抵抗体R1~R6の抵抗温度係数に特有の測定値が合成抵抗値として抵抗値変化検知部15に測定されて、いずれの検知箇所P1~P6でき電線Fが発熱したかを発熱判定部16が判定する。検知箇所P1~P6毎の発熱の有無を発熱検知信号として発熱判定部16が送信装置13に送信し、送信装置13が発熱検知信号を受信装置14に送信すると、作業員が所有する携帯端末装置や信号機器室内の通信機器などに、き電線Fの発熱が告知される。
Next, the operation of the heat generation detection system and heat generation detection device according to the seventh embodiment of the present invention will be described.
When the feeder line F heats up and the temperature rises, the combined resistance value of the resistors R 1 to R 6 changes. A measured value specific to the temperature coefficient of resistance of each resistor R 1 to R 6 is measured as a combined resistance value by the resistance value change detection unit 15, and which detection point P 1 to P 6 generated heat in the wire F. is determined by the heat generation determination unit 16 . The presence or absence of heat generation at each of the detection points P 1 to P 6 is transmitted as a heat generation detection signal by the heat generation determination unit 16 to the transmission device 13, and when the transmission device 13 transmits the heat generation detection signal to the reception device 14, the mobile phone owned by the worker is transmitted. The heat generation of the feeder line F is notified to the terminal equipment and the communication equipment in the signal equipment room.

き電線Fがさらに発熱すると、き電線Fが発生する熱が導電部9を通じて開閉部S1~S6に伝達される。き電線Fが所定温度を超えると、開閉部S1~S6が開状態から閉状態に切り替わり、電気回路Eが通電状態になる。その結果、き電線Fが所定温度を超えて発熱したと開閉状態検知部7が検知し、開閉状態検知部7が発熱検知信号を送信装置13に送信する。送信装置13が発熱検知信号を受信装置14に送信すると、作業員が所有する携帯端末装置や信号機器室内の通信機器などに、き電線Fの発熱が告知される。 When the feeder line F further generates heat, the heat generated by the feeder line F is transmitted through the conductive portion 9 to the opening/closing portions S 1 to S 6 . When the feeder line F exceeds a predetermined temperature, the switching portions S 1 to S 6 are switched from the open state to the closed state, and the electric circuit E is energized. As a result, the switching state detector 7 detects that the feeder line F has generated heat exceeding a predetermined temperature, and the switching state detector 7 transmits a heat generation detection signal to the transmitter 13 . When the transmitting device 13 transmits the heat generation detection signal to the receiving device 14, the portable terminal device owned by the worker and the communication device in the signal equipment room are notified of the heat generation of the feeder line F.

この発明の第7実施形態に係る発熱検知装置には、第1実施形態~第6実施形態の効果に加えて、以下に記載するような効果がある。
(1) この第7実施形態では、き電線Fの各検知箇所P1~P6から複数の抵抗体R1~R6が熱を受けたときに、この複数の抵抗体R1~R6の抵抗値の変化量ΔRが異なり、この複数の抵抗体R1~R6の抵抗値の変化を抵抗値変化検知部15が検知する。また、この第7実施形態では、き電線Fの各検知箇所P1~P6から所定温度を超える熱を受けたときに複数の開閉部S1~S6が開閉し、この複数の開閉部S1~S6の開閉状態を開閉状態検知部7が検知する。このため、き電線Fが発熱する前にき電線Fの温度上昇を事前に把握することができるとともに、き電線Fが発熱した後に迅速に警告を発生させることができる。
The heat generation detection device according to the seventh embodiment of the present invention has the following effects in addition to the effects of the first to sixth embodiments.
(1) In this seventh embodiment, when the plurality of resistors R 1 to R 6 receive heat from the detection points P 1 to P 6 of the feeder line F, the plurality of resistors R 1 to R 6 The amount of change ΔR in the resistance values of the resistors R 1 to R 6 is different, and the resistance change detector 15 detects the changes in the resistance values of the plurality of resistors R 1 to R 6 . Further, in the seventh embodiment, when heat exceeding a predetermined temperature is received from each of the detection points P 1 to P 6 of the feeder line F, the plurality of opening/closing portions S 1 to S 6 are opened and closed. The open/closed state detector 7 detects the open/closed state of S 1 to S 6 . Therefore, the temperature rise of the feeder line F can be grasped in advance before the feeder line F generates heat, and a warning can be issued quickly after the feeder line F generates heat.

(2) この第7実施形態では、複数の抵抗体R1~R6が直列接続されており、き電線Fの温度が上昇したときに抵抗値が指数関数的に増加又は低下し、き電線Fの検知箇所P1~P6毎に発熱による抵抗体R1~R6の抵抗値の増加又は低下を抵抗値変化検知部15が検知する。また、この第7実施形態では、複数の開閉部S1~S6が複数の抵抗体R1~R6毎に並列接続されており、き電線Fの各検知箇所P1~P6から所定温度を超える熱を受けたときに複数の開閉部S1~S6が閉じ、開閉状態検知部7がき電線Fの各検知箇所P1~P6の開閉部S1~S6の閉状態を検知することによって、このき電線Fの発熱を検知する。このため、き電線Fの温度上昇を検知箇所P1~P6毎に検知することができるとともに、き電線Fの異常発熱を簡単に検知することができる。 (2) In this seventh embodiment, a plurality of resistors R 1 to R 6 are connected in series. The resistance value change detection unit 15 detects an increase or decrease in the resistance value of the resistors R 1 to R 6 due to heat generation at each of the detection points P 1 to P 6 of F. Further, in the seventh embodiment, a plurality of opening/closing sections S 1 to S 6 are connected in parallel to each of the plurality of resistors R 1 to R 6 , and predetermined A plurality of switching parts S 1 to S 6 are closed when heat exceeding the temperature is received, and the switching state detection part 7 detects the closed states of the switching parts S 1 to S 6 of the respective detection points P 1 to P 6 of the feeder line F. By detecting, the heat generation of this feeder line F is detected. Therefore, the temperature rise of the feeder line F can be detected at each of the detection points P1 to P6 , and abnormal heat generation of the feeder line F can be easily detected.

(他の実施形態)
この発明は、以上説明した実施形態に限定するものではなく、以下に記載するように種々の変形又は変更が可能であり、これらもこの発明の範囲内である。
(1) この実施形態では、検知対象物がき電線Fである場合を例に挙げて説明したが、接続部Cを検知対象物とする場合についてもこの発明を適用することができる。例えば、き電線Fから分岐するき電分岐線とこのき電線Fとを接続する平行スリーブ、き電線Fを把持するスリーブ部を支持構造物に引き留める引留クランプ又は圧縮式引留クランプなどを検知対象物とする場合についても、この発明を適用することができる。また、この実施形態では、検知対象物がき電線路である場合を例に挙げて説明したが、電気車に集電装置を通じて電力を供給する構造を有する電車線路を検知対象物とする場合についても、この発明を適用することができる。例えば、電気車の集電装置のすり板が接触するトロリ線を支持するちょう架線、トロリ線をちょう架線に吊り下げるハンガイヤー、き電線Fからトロリ線に電力を供給するフィードイヤーなどを検知対象物とする場合についても、この発明を適用することができる。さらに、この実施形態では、検知対象物が電線路である場合を例に挙げて説明したが、剛体ちょう架式電車線路の剛体き電線、送電線又は配電線などの電線路などを検知対象物とする場合についても、この発明を適用することができる。
(Other embodiments)
The present invention is not limited to the embodiments described above, and various modifications and changes are possible as described below, which are also within the scope of the present invention.
(1) In this embodiment, the case where the object to be detected is the feeder line F has been described as an example. For example, a parallel sleeve that connects a feeder branch line branched from the feeder line F and this feeder line F, a anchor clamp or a compression type anchor clamp that retains the sleeve part that grips the feeder line F to the support structure, etc. This invention can also be applied to cases where In addition, in this embodiment, the case where the object to be detected is a feeder line has been described as an example. , the present invention can be applied. For example, the trolley wire that supports the contact wire that contacts the contact strip of the current collector of an electric vehicle, the hanger ear that suspends the contact wire from the trolley wire, and the feeder that supplies power from the feeder line F to the contact wire. This invention can also be applied to cases where Furthermore, in this embodiment, the case where the object to be detected is an electric line has been described as an example. This invention can also be applied to cases where

(2) この実施形態では、き電線F及び接続部Cに発熱検知装置2A,2Bをグループ化して複数装着する場合を例に挙げて説明したが、き電線F又は接続部Cに発熱検知装置2A,2Bを単体で装着する場合についても、この発明を適用することができる。また、この実施形態では、接続部Cの断面形状が略六角形である場合を例に挙げて説明したが、断面形状が六角形以外の多角形である場合についても、この発明を適用することができる。さらに、この実施形態では、き電線Fの中心線を中心として中心角60°となるように、開閉部S1~S6又は抵抗器R0,R1~R6をき電線F又は接続部Cの外周部の周方向に等間隔で合計6個配置する場合を例に挙げて説明したが、任意の設置個数又は設置間隔でこれらを配置する場合についても、この発明を適用することができる。 (2) In this embodiment, the case where the heat generation detection devices 2A and 2B are grouped and mounted on the feeder line F and the connection portion C is described as an example. The present invention can also be applied to the case where 2A and 2B are attached alone. Further, in this embodiment, the case where the cross-sectional shape of the connection portion C is substantially hexagonal has been described as an example, but the present invention can also be applied to the case where the cross-sectional shape is a polygon other than a hexagon. can be done. Further, in this embodiment, the switch portions S 1 to S 6 or the resistors R 0 and R 1 to R 6 are connected to the feeder line F or the connecting portion so that the central angle is 60° with the center line of the feeder line F as the center. Although the case where a total of 6 pieces are arranged at equal intervals in the circumferential direction of the outer periphery of C has been described as an example, the present invention can also be applied to the case where these are arranged at an arbitrary number or interval. .

(3) この実施形態では、接続部Cの両端部に発熱検知装置2Bを装着する場合を例に挙げて説明したが、き電線Fと接続部Cとの境界部に跨るように発熱検知装置2A,2Bを装着する場合についても、この発明を適用することができる。また、この実施形態では、配線部4A~4Eがリード線である場合を例に挙げて説明したが、配線部4A~4Eがフレキシブルプリント基板である場合についても、この発明を適用することができる。さらに、この第3実施形態~第7実施形態では、発熱検知装置2A,2B側に発熱判定部16を備える場合を例に挙げて説明したが、受信装置14側に発熱判定部16を備える場合についても、この発明を適用することができる。この場合には、抵抗値変化検知部15が出力する抵抗値信号を送信装置13から受信装置14に送信し、受信装置14側の発熱判定部16によってき電線Fの発熱の有無を判定することができる。 (3) In this embodiment, the case where the heat detection device 2B is attached to both ends of the connection portion C has been described as an example. The present invention can also be applied to cases where 2A and 2B are attached. Further, in this embodiment, the case where the wiring portions 4A to 4E are lead wires has been described as an example, but the present invention can also be applied to the case where the wiring portions 4A to 4E are flexible printed circuit boards. . Furthermore, in the third to seventh embodiments, the case where the heat generation determination unit 16 is provided on the side of the heat generation detection devices 2A and 2B has been described as an example. This invention can also be applied to In this case, the resistance value signal output by the resistance value change detection unit 15 is transmitted from the transmission device 13 to the reception device 14, and the heat generation determination unit 16 on the reception device 14 side determines whether or not the feeder line F generates heat. can be done.

1 発熱検知システム
2A,2B 発熱検知装置
3 発熱検知部
4A~4E 配線部
5 電源部
6A~6C コネクタ部
7 開閉状態検知部
8A,8B 装着部
9 導電部
10 弾性部
11 被覆部
12 収容部
13 送信装置
14 受信装置
15 抵抗値変化検知部
16 発熱判定部
F き電線(検知対象物)
C 接続部(検知対象物)
1~P6 検知箇所
1~S6 開閉部
0~R6 抵抗体
0 所定値
0 温度(所定温度)
ref 基準温度
TH 所定値
ΔR,ΔR1~ΔR6 変化量
1 heat generation detection system 2A, 2B heat generation detection device 3 heat generation detection unit 4A to 4E wiring unit 5 power supply unit 6A to 6C connector unit 7 open/closed state detection unit 8A, 8B mounting unit 9 conductive unit 10 elastic unit 11 covering unit 12 housing unit 13 Transmitting device 14 Receiving device 15 Resistance value change detection unit 16 Heat generation determination unit F feeder wire (object to be detected)
C connection part (object to be detected)
P 1 to P 6 detection points S 1 to S 6 switching part R 0 to R 6 resistor I 0 predetermined value T 0 temperature (predetermined temperature)
T ref reference temperature R TH predetermined value ΔR, ΔR 1 to ΔR 6 variation

Claims (3)

検知対象物に装着されてこの検知対象物の発熱を検知する発熱検知装置であって、
前記検知対象物の外周部の周方向に間隔をあけて複数の検知箇所で、この検知対象物の発熱を検知する発熱検知部を備え、
前記発熱検知部は、
前記検知対象物の各検知箇所から熱を受けたときの抵抗値の変化量が異なる複数の抵抗体と、
前記複数の抵抗体の抵抗値の変化を検知する抵抗値変化検知部と、
前記検知対象物の各検知箇所から所定温度を超える熱を受けたときに開閉する複数の開閉部と、
前記複数の開閉部の開閉状態を検知する開閉状態検知部とを備えること、
を特徴とする発熱検知装置。
A heat generation detection device that is attached to a detection target and detects heat generation of the detection target,
A heat generation detection unit that detects heat generation of the detection target at a plurality of detection locations spaced apart in the circumferential direction of the outer periphery of the detection target,
The heat detection unit is
a plurality of resistors having different amounts of change in resistance value when receiving heat from each detection location of the detection target;
a resistance value change detection unit that detects a change in the resistance value of the plurality of resistors;
a plurality of opening and closing parts that open and close when heat exceeding a predetermined temperature is received from each detection location of the detection object;
an opening/closing state detection unit that detects the opening/closing state of the plurality of opening/closing units;
A fever detection device characterized by:
請求項に記載の発熱検知装置において、
前記複数の抵抗体は、直列接続されており、前記検知対象物の温度が上昇したときに抵抗値が指数関数的に増加又は低下し、
前記抵抗値変化検知部は、前記検知対象物の検知箇所毎に発熱による前記抵抗体の抵抗値の増加又は低下を検知し、
前記複数の開閉部は、前記複数の抵抗体毎に並列接続されており、前記検知対象物の各検知箇所から所定温度を超える熱を受けたときに閉じ、
前記開閉状態検知部は、前記検知対象物の各検知箇所の開閉部の閉状態を検知することによって、この検知対象物の発熱を検知すること、
を特徴とする発熱検知装置。
The fever detection device according to claim 1 ,
The plurality of resistors are connected in series, and the resistance value increases or decreases exponentially when the temperature of the object to be sensed increases,
The resistance value change detection unit detects an increase or decrease in the resistance value of the resistor due to heat generation at each detection point of the detection object,
The plurality of open/close sections are connected in parallel for each of the plurality of resistors, and are closed when heat exceeding a predetermined temperature is received from each detection location of the detection target,
The opening/closing state detection unit detects heat generation of the detection object by detecting a closed state of an opening/closing portion at each detection location of the detection object;
A fever detection device characterized by:
検知対象物の発熱を検知する発熱検知システムであって、
請求項1又は請求項に記載の発熱検知装置と、
前記発熱検知装置の検知結果を送信する送信装置と、
前記送信装置から送信される前記検知結果を受信する受信装置と、
を備える発熱検知システム。
A heat generation detection system for detecting heat generation of a detection target,
a heat generation detection device according to claim 1 or claim 2 ;
a transmission device that transmits a detection result of the heat detection device;
a receiving device that receives the detection result transmitted from the transmitting device;
Fever detection system with
JP2018112815A 2018-06-13 2018-06-13 Fever detection device and fever detection system Active JP7108474B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018112815A JP7108474B2 (en) 2018-06-13 2018-06-13 Fever detection device and fever detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2018112815A JP7108474B2 (en) 2018-06-13 2018-06-13 Fever detection device and fever detection system

Publications (2)

Publication Number Publication Date
JP2019215265A JP2019215265A (en) 2019-12-19
JP7108474B2 true JP7108474B2 (en) 2022-07-28

Family

ID=68918623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2018112815A Active JP7108474B2 (en) 2018-06-13 2018-06-13 Fever detection device and fever detection system

Country Status (1)

Country Link
JP (1) JP7108474B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003324802A (en) 2002-04-26 2003-11-14 Sanyo Electric Co Ltd Power supply for vehicle
JP2006145478A (en) 2004-11-24 2006-06-08 Tyco Electronics Raychem Kk Temperature abnormality detection method and system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5349078Y2 (en) * 1973-10-16 1978-11-24
JPS56153225A (en) * 1980-04-28 1981-11-27 Toshiba Corp Detector for bearing temperature
JPH0530237Y2 (en) * 1986-07-31 1993-08-02
JPH0469742U (en) * 1990-10-26 1992-06-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003324802A (en) 2002-04-26 2003-11-14 Sanyo Electric Co Ltd Power supply for vehicle
JP2006145478A (en) 2004-11-24 2006-06-08 Tyco Electronics Raychem Kk Temperature abnormality detection method and system

Also Published As

Publication number Publication date
JP2019215265A (en) 2019-12-19

Similar Documents

Publication Publication Date Title
CN104142186B (en) Remote optical fiber cable temperature detection and alarm system
KR101034644B1 (en) Non-contact safety detector
US9695010B2 (en) Connecting device for measurement tapes in elevator devices
KR101764805B1 (en) Smart line temperature monitoring alarm system
US20150060213A1 (en) Connecting device for measurement tapes in elevator devices
CN113757478A (en) Temperature-control distributed marine pipeline anti-freezing device and laying method thereof
KR20160014509A (en) busduct joint and multi point temperature monitering system of busduct including the same
KR102238913B1 (en) recognizing method of temperature sensor for multi point temperature monitering system of busduct
JP7108474B2 (en) Fever detection device and fever detection system
JP2025510203A5 (en) Smart socket devices and electrical safety systems
CN102736650A (en) Online temperature monitoring early-warning system for high-voltage electric power equipment
CN206132228U (en) Direction-changing infrared wireless temperature sensor device
KR102079873B1 (en) Sensor type terminal block and mehod for diagnosing terminal overheating using this
JP2005057896A (en) Abnormal heating monitoring system for overhead wire
CN108877130A (en) Heat fire detector with terminal alarms instruction function
CN104677502A (en) Infrared remote wired alarm device for high-voltage isolation switch heat fault and operation method
CN208737637U (en) Heat fire detector with terminal alarms instruction function
CN207572958U (en) A kind of power distribution cabinet temperature protection system
CN101650865A (en) Linear temperature sensing fire detector with point-shaped temperature sensing element and alarm method thereof
CN206361806U (en) A kind of multi-point temperature measurement control device
US20240288483A1 (en) Monitoring system for critical electrical distribution systems
JP2013192308A (en) Overheat detection system
KR200473359Y1 (en) 4 Line Type Structure of Sensing Wire of Constant Temperature
CN112504503A (en) Temperature-sensing monitoring and early-warning system for lead connecting part of low-voltage power supply line
CN104990634A (en) Cable head temperature online monitoring device

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20210423

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210520

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20210423

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20220316

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220324

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220519

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220701

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220715

R150 Certificate of patent or registration of utility model

Ref document number: 7108474

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250