JPS5839301B2 - detection device - Google Patents
detection deviceInfo
- Publication number
- JPS5839301B2 JPS5839301B2 JP7471677A JP7471677A JPS5839301B2 JP S5839301 B2 JPS5839301 B2 JP S5839301B2 JP 7471677 A JP7471677 A JP 7471677A JP 7471677 A JP7471677 A JP 7471677A JP S5839301 B2 JPS5839301 B2 JP S5839301B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- light emitting
- terminal
- temperature
- constant
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 title claims description 22
- 230000000630 rising effect Effects 0.000 description 15
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
【発明の詳細な説明】
本発明は発光素子の連らなった発光に依り温度等を表示
する表示装置に接続され、発光素子の端子電圧を検出し
、温度等を制御する為の検出出力を得る検出装置に関す
る。[Detailed Description of the Invention] The present invention is connected to a display device that displays temperature, etc. by emitting light from a series of light emitting elements, detects the terminal voltage of the light emitting elements, and outputs a detection output for controlling the temperature, etc. The present invention relates to a detection device.
一般に例えば冷蔵庫あるいは空調設備機器等の温度表示
を発光素子の連らなった発光に依って行なう場合、検出
装置は発光素子の端子電圧の設定された個所でのみオン
及びオフの検出動作をするので温吠等の制御に一定の幅
を持たせることができず、また制御に一定の幅を持たせ
る場合には複数の検出装置が必要であり相互の検出装置
の調整が複雑となる欠点を有していた。Generally, when the temperature of a refrigerator or air conditioner is displayed by emitting light from a series of light emitting elements, the detection device performs ON and OFF detection operations only at the points where the terminal voltage of the light emitting element is set. It is not possible to control hot barking, etc. within a certain range, and when controlling within a certain range, multiple detection devices are required, making it complicated to adjust the mutual detection devices. Was.
本発明は上述した欠点に鑑みて為されたものであり、従
来の欠点を完全に除去し複数の制御幅を設定できる様に
した検出装置を提供するものである。The present invention has been made in view of the above-mentioned drawbacks, and it is an object of the present invention to provide a detection device that completely eliminates the conventional drawbacks and allows setting of a plurality of control widths.
以下図面を参照して本発明の詳細な説明する。第１図は
本発明の実施例を示す回路図である。The present invention will be described in detail below with reference to the drawings. FIG. 1 is a circuit diagram showing an embodiment of the present invention.
本実施例は温度の表示と制御を行なう場合であり、１は
温度を電気的に変換する感温素子、２は感温素子１の微
小出力を増幅し温度に対応した大きさの電圧を出力する
増幅器、３は直列接続されたＰＮＰ型トランジスタＴｒ
１〜ＴｒｎとＰＮＰ型トランジスタＴｒ１〜Ｔｒｎに各
々並列接続された発光ダイオードＬＥＤ１〜ＬＥＤｎと
常時点灯用発光ダイオードＬＥＤｏと抵抗Ｒ及び定電流
源４とから成る表示装置であり、入力電圧即ち増幅器２
の出力電圧に依り、遮断状態となる。In this embodiment, temperature is displayed and controlled, and 1 is a temperature sensing element that electrically converts temperature, and 2 is a temperature sensing element that amplifies the minute output of the temperature sensing element 1 and outputs a voltage corresponding to the temperature. 3 is a PNP type transistor Tr connected in series.
1 to Trn and PNP transistors Tr1 to Trn, respectively, are light emitting diodes LED1 to LEDn, a constant lighting light emitting diode LEDo, a resistor R, and a constant current source 4.
Depending on the output voltage of the circuit, it becomes cut off.
トランジスタに接続された発光ダイオードが点灯して表
示が為され、点灯した発光ダイオードの立ち上がり電圧
の和は入力電圧と略等しくなるものである。The light emitting diodes connected to the transistor are lit to provide a display, and the sum of the rising voltages of the lit light emitting diodes is approximately equal to the input voltage.
５は表示装置３の発光ダイオードＬ ＥＤ ｏ−Ｌ Ｅ
Ｄ ｎの端子電圧を選択切替する切替手段、６は定電流
源７の定電流■Ｂをツェナーダイオード８に流すことに
依って生じる定電圧を半固定抵抗ＶＲ及びＲ１） Ｒ２
、Ｒ３に依って分割し切替手段５に依って選択された発
光ダイオードの端子電圧に加算する定電圧回路、９は表
示装置３の入力電圧が（田端子に印加された比較増幅器
、１０は比較増幅器９の検出出力ｏｕｔが接地レベルの
ときＲ１＋Ｒ２＋Ｒ３の電圧を（→端子に印加する第１
のゲート回路、１１は検出出力ｏｕｔが電源電圧レベル
の時切替手段１２に依って切替えられたａ。5 is a light emitting diode of the display device 3
Switching means 6 selects and switches the terminal voltage of D n, and 6 is a constant voltage generated by flowing the constant current B of the constant current source 7 through the Zener diode 8 through the semi-fixed resistors VR and R1) R2
, a constant voltage circuit that divides the voltage by R3 and adds it to the terminal voltage of the light emitting diode selected by the switching means 5; 9 is a comparator amplifier in which the input voltage of the display device 3 is applied to the terminal; 10 is a comparator amplifier; When the detection output out of the amplifier 9 is at the ground level, the voltage of R1+R2+R3 is
The gate circuit 11 is a which is switched by the switching means 12 when the detection output OUT is at the power supply voltage level.
ｂ、ｃのいずれかの電圧を（ヨ端子に印加する第２のゲ
ート回路、１３はインバータである。A second gate circuit 13 is an inverter that applies either voltage b or c to the y terminal.
次に本実施例を第２図を参照しながら説明する。Next, this embodiment will be explained with reference to FIG.
先ず定電圧回路６のツェナーダイオード８に生じる定電
圧を発光ダイオード３個分の立ち上がり電圧より大きい
ものとし、更に半固定抵抗ＶＲを調整して、抵抗Ｒ１，
Ｒ２，Ｒ３に生じる電圧を各各発光ダイオード１個分の
立ち上がり電圧と等しくなる様に設定しておいて、切替
手段５を二に切替えた場合に於いて、最初比較増幅器９
の検出出力ｏｕｔは接地レベルとなっており、インバー
タ１３を介して電源電圧レベルが印加される第１のゲー
ト回路１０はゲートが開かれた状態となっている。First, the constant voltage generated in the Zener diode 8 of the constant voltage circuit 6 is made larger than the rising voltage of three light emitting diodes, and then the semi-fixed resistor VR is adjusted, and the resistors R1,
When the voltage generated in R2 and R3 is set to be equal to the rising voltage of one light emitting diode, and the switching means 5 is switched to 2, first the comparator amplifier 9
The detection output OUT is at the ground level, and the gate of the first gate circuit 10 to which the power supply voltage level is applied via the inverter 13 is in an open state.
従って比較増幅器９の（→端子には発光ダイオードＬＥ
Ｄ３の二の端子電圧に定電圧回路６のＲ１＋Ｒ２＋Ｒ３
に依る電圧即ち発光ダイオード３個分の立ち上がり電圧
が加算された電圧が印加される。Therefore, the light emitting diode LE is connected to the (→ terminal) of the comparator amplifier 9.
R1+R2+R3 of constant voltage circuit 6 to the second terminal voltage of D3
, that is, a voltage that is the sum of the rising voltages of three light emitting diodes is applied.
一方（→端子には入力電圧が印加される第２図に示す如
くになる。On the other hand, an input voltage is applied to the (→ terminal as shown in FIG. 2).
従って温度が発光ダイオードＬＥＤｏ−ＬＥＤ３の範囲
の点灯で示される場合、入力電圧が発光ダイオードＬＥ
Ｄｏの立ち上がり電圧を超えるまで（ハ）端子電圧は第
２図の如く一定であるが、発光ダイオードＬＥＤ１が点
灯し始めると入力電圧即ち（ト）端子電圧と同様に上昇
し、その差は常に発光ダイオード３個分の立ち上がり電
圧となっている。Therefore, if the temperature is indicated by lighting in the range of light emitting diodes LEDo-LED3, the input voltage is
The (c) terminal voltage remains constant as shown in Figure 2 until it exceeds the rising voltage of Do. However, when the light emitting diode LED1 starts to light up, it rises in the same way as the input voltage, that is, the (g) terminal voltage, and the difference between them always causes light to emit light. The rising voltage is equivalent to three diodes.
温度が上昇し発光ダイオードＬＥＤ、が点灯し始めると
ｄ点から（ハ）端子電圧は一定となり出端子電圧との差
は縮まってゆく。When the temperature rises and the light emitting diode LED starts to light up, from point d (c) the terminal voltage becomes constant and the difference with the output terminal voltage decreases.
更に温度が上昇し発光ダイオードＬＥＤ３から３個上の
発光ダイオードＬＥＤ６が点灯し終ると（イ）端子電圧
とに）端子電圧とはｇ点で示される如く等しくなる。When the temperature further rises and the light emitting diodes LED6 above the light emitting diode LED3 finish lighting, the terminal voltage (a) becomes equal to the terminal voltage as shown at point g.
この時比較増幅器９は検出出力ｏｕｔを接地レベルから
電源電圧レベルとする。At this time, the comparison amplifier 9 changes the detection output out from the ground level to the power supply voltage level.
従ってインパーク１３の出力は接地レベルとなり第１の
ゲート回路１０のゲートは閉成され、一方策２のゲート
回路１１のゲートが開成される。Therefore, the output of the impark 13 becomes the ground level, and the gate of the first gate circuit 10 is closed, and the gate of the gate circuit 11 of the second option is opened.
ここで切替手段１２をａの端子にしておいた場合、比較
増幅器９の（ハ）端子には二の端子電圧にＲ２＋Ｒ３に
依る電圧即ち発光ダイオード２個分の立ち上がり電圧を
加算した電圧が印加される。Here, if the switching means 12 is set to the terminal (a), a voltage obtained by adding the voltage at the second terminal and the voltage due to R2+R3, that is, the rising voltage of two light emitting diodes, is applied to the (c) terminal of the comparator amplifier 9. Ru.
即ちこの電圧は前述の場合より発光ダイオード１個の立
ち上がり電圧分だけ低くなるものであり、第２図のａで
示される。That is, this voltage is lower than the case described above by the rise voltage of one light emitting diode, and is shown by a in FIG. 2.
従って比較増幅器９の（１）端子電圧とに）端子電圧と
の大小が完全に逆転し検出出力ｏｕｆの電源電圧レベル
は安定したものとなる。Therefore, the magnitude of the (1) terminal voltage and (2) terminal voltage of the comparison amplifier 9 is completely reversed, and the power supply voltage level of the detection output of becomes stable.
この検出出力ｏｕｔで冷蔵庫あるいは空調設備機器等の
コンプレッサを起動させれば温度の上昇を抑制すること
ができる。If a compressor of a refrigerator or an air conditioner is started using this detection output out, a rise in temperature can be suppressed.
またコンプレッサの起動に依り温度が低下した場合、（
ハ）端子電圧第２図に示されたａの電圧を維持するので
、（１）端子電圧と等しくなるのは発光ダイオードＬＥ
Ｄ６が完全に消灯した時であり、第２図のｇ点で示され
る入力電圧より発光ダイオード１個の立ち上がり電圧分
低いｆ点で示される。Also, if the temperature drops due to the start of the compressor, (
c) Terminal voltage Since the voltage a shown in Figure 2 is maintained, (1) the terminal voltage is equal to the light emitting diode LE.
This is the time when D6 is completely turned off, which is indicated by point f, which is lower than the input voltage indicated by point g in FIG. 2 by the rising voltage of one light emitting diode.
この時比較増幅器９は検出出力ｏｕｔを電源電圧レベル
から接地レベルに変える。At this time, the comparison amplifier 9 changes the detection output out from the power supply voltage level to the ground level.
従って第２のゲ・−ト回路１１はゲートが閉成され、一
方インバータ１３を介して電源電圧レベルが印加される
第１のゲート回路１０のゲートが開成され、（→端子に
はａよりも発光ダイオード１個の立ち上がり電圧分だけ
高い電圧が印加されるのである。Therefore, the gate of the second gate circuit 11 is closed, while the gate of the first gate circuit 10, to which the power supply voltage level is applied via the inverter 13, is opened. A voltage higher by the rise voltage of one light emitting diode is applied.
これに依り比較増幅器９の検出出力ｏｕｔの接地レベル
は安定となり、コンプレッサの動転を停止させるもので
ある。As a result, the ground level of the detection output OUT of the comparator amplifier 9 becomes stable, and the operation of the compressor is stopped.
切替手段１２をｂの端子とした場合、ｇ点に於いて（へ
）端子電圧は発光ダイオード２個の立ち上がり電圧分だ
け低下しｂで示される電圧となり、温度が低下し再び（
１）端子と（＠端子の電圧が等しくなるのは０点であり
発光ダイオードＬＥＤ５が完全に消灯した時である。When the switching means 12 is set to terminal b, at point g, the terminal voltage (f) decreases by the rising voltage of the two light emitting diodes and becomes the voltage indicated by b, the temperature decreases, and again (
1) The voltages of the terminal and the (@ terminal become equal at point 0, when the light emitting diode LED5 is completely turned off.
この時のｇ、ｅ間の入力電圧の差は発光ダイオード２個
の立ち上がり電圧分となっている。At this time, the difference in input voltage between g and e is equal to the rising voltage of the two light emitting diodes.
また切替手段１２をＣの端子とした場合・ ｇ点に於い
て、（ハ）端子電圧は発光ダイオード３個の立ち上がり
電圧外低下しＣで示される電圧となり、（田端子と（→
端子との電圧が再ひ等しくなるのはｄ点であり発光ダイ
オードＬＥＤ４が完全に消灯した時である。In addition, when the switching means 12 is set to terminal C, at point g, the terminal voltage (c) decreases beyond the rising voltage of the three light emitting diodes and becomes the voltage indicated by C, and the terminal voltage (
The voltage with the terminal becomes equal again at point d, when the light emitting diode LED4 is completely turned off.
またｇｏｄ間の入力電圧差は発光ダイオード３個の立ち
上がり電圧分となっている。Further, the input voltage difference between GOD and GOD is equal to the rising voltage of three light emitting diodes.
従って切替手段１２をａ、ｂ、ｃと切替えることに依り
検出出力ｏｕｔが接地レベルになる時の入力電圧の大き
さが各々異なるので、所望の温度制御幅を連設すること
ができるものである。Therefore, by switching the switching means 12 to a, b, and c, the magnitude of the input voltage when the detection output OUT becomes the ground level is different, so that a desired temperature control width can be set in succession. .
また切替手段５を切替えると（→端子電圧の一定となる
電圧が異なるものであり、切替手段５を一段切替る毎に
発光ダイオード１個の立ち上がり電圧づつ変化し、また
ｄ、ｅ、ｆ２ｇ点も同時に変化するものである。Moreover, when the switching means 5 is switched (→The voltage at which the terminal voltage becomes constant is different, and each time the switching means 5 is switched one stage, the rising voltage of one light emitting diode changes, and the points d, e, and f2g also change. They change at the same time.
従って切替手段５を切替えることに依って温度を任意に
設定できるものである。Therefore, by switching the switching means 5, the temperature can be set arbitrarily.
尚本実施例では定電圧回路６のツエナーダイオ−ド８を
発光ダイオード３個の立ち上がり電圧以上とし、抵抗Ｒ
１Ｊ Ｒ２Ｊ Ｒ３の電圧を発光ダイオード１個の立ち
上がり電圧と等しくしているが、抵抗Ｒ１，Ｒ２，Ｒ３
の値あるいはツェナーダイオード８の定電圧を任意に設
定することに依り所望の温度制御幅を得られるものであ
る。In this embodiment, the Zener diode 8 of the constant voltage circuit 6 is set to have a rising voltage higher than that of three light emitting diodes, and the resistor R
1J R2J The voltage of R3 is made equal to the rising voltage of one light emitting diode, but the resistors R1, R2, R3
By arbitrarily setting the value of or the constant voltage of the Zener diode 8, a desired temperature control width can be obtained.
上述の如く本発明に依れば簡単な単一の検出装置に依り
、温度等の制御に幅を持たせることができ、更に切替手
段に依り簡単に制御幅を選定できるものであり、冷蔵庫
あるいは空調設備機器等の温度制御に利用すればその効
果大なるものである。As described above, according to the present invention, it is possible to control temperature, etc. with a wide range using a simple single detection device, and furthermore, the control range can be easily selected using a switching means. If used to control the temperature of air conditioning equipment, etc., the effect will be great.
第１図は本発明の実施例を示す回路図、第２図は第１図
に示した実施例の動作を説明するための特性図である。
１・・・・・・感温素子、２・・・・・・増幅器、３・
・・・・・表示装置、４・・・・・・定電流源、５・・
・・・・切替手段、６・・・・・・定電圧回路、７・・
・・・・定電流源、８・・・・・・ツェナーダイオード
、９・・・・・・比較増幅器、１０・・・・・・第１の
ゲート回路、１１・・・・・・第２のゲート回路、１２
・・・・・・切替手段、１３・・・・・・インバータで
ある。FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a characteristic diagram for explaining the operation of the embodiment shown in FIG. 1...Temperature sensing element, 2...Amplifier, 3.
... Display device, 4 ... Constant current source, 5 ...
...Switching means, 6... Constant voltage circuit, 7...
... Constant current source, 8 ... Zener diode, 9 ... Comparison amplifier, 10 ... First gate circuit, 11 ... Second gate circuit, 12
. . . switching means, 13 . . . inverter.
Claims (1)
表示装置の前記発光素子の端子電圧を検出する検出装置
に於いて、前記表示装置の入力電圧が一方の入力端子に
印加された比較増幅器と、前記表示素子の所望の端子電
圧に所定の電圧を加算する定電圧回路と、該定電圧回路
の上位電圧あるいは下位電圧のいずれかを検出出力の状
態に依って前記比較増幅器の他方の入力端子に印加する
第１及び第２のゲート回路を備え、前記比較増幅器の入
力端子電圧の大小に依り検出出力が為されることを特徴
とする検出装置。1. In a detection device that detects the terminal voltage of the light emitting element of a display device that displays temperature etc. by light emission from a series of light emitting elements, a comparison in which the input voltage of the display device is applied to one input terminal. an amplifier; a constant voltage circuit that adds a predetermined voltage to a desired terminal voltage of the display element; and a voltage control circuit that detects either the upper voltage or the lower voltage of the constant voltage circuit and adds the voltage to the other one of the comparison amplifier depending on the state of the detection output. A detection device comprising first and second gate circuits that apply voltage to an input terminal, and a detection output is made depending on the magnitude of the input terminal voltage of the comparison amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7471677A JPS5839301B2 (en) | 1977-06-20 | 1977-06-20 | detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7471677A JPS5839301B2 (en) | 1977-06-20 | 1977-06-20 | detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS547977A JPS547977A (en) | 1979-01-20 |
| JPS5839301B2 true JPS5839301B2 (en) | 1983-08-29 |
Family
ID=13555213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7471677A Expired JPS5839301B2 (en) | 1977-06-20 | 1977-06-20 | detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5839301B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6337303U (en) * | 1986-08-28 | 1988-03-10 |
-
1977
- 1977-06-20 JP JP7471677A patent/JPS5839301B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6337303U (en) * | 1986-08-28 | 1988-03-10 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS547977A (en) | 1979-01-20 |
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