JP2926073B2 - Air conditioner communication device - Google Patents
Air conditioner communication deviceInfo
- Publication number
- JP2926073B2 JP2926073B2 JP2319083A JP31908390A JP2926073B2 JP 2926073 B2 JP2926073 B2 JP 2926073B2 JP 2319083 A JP2319083 A JP 2319083A JP 31908390 A JP31908390 A JP 31908390A JP 2926073 B2 JP2926073 B2 JP 2926073B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- address
- terminating resistor
- air conditioner
- switch
- 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 - Fee Related
Links
- 238000004891 communication Methods 0.000 title claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 63
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/221—General power management systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Selective Calling Equipment (AREA)
- Air Conditioning Control Device (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は伝送線を媒体としてデータ伝送を行う空気調
和機の通信装置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device for an air conditioner that performs data transmission using a transmission line as a medium.
従来の技術 近年、データ伝送技術を使用し複数台の機器を制御す
る空気調和機の開発が進められている（例えば特開昭62
−196928号公法）。2. Description of the Related Art In recent years, air conditioners that control a plurality of devices using data transmission technology have been developed (for example, see
-196928 public law).
以下図面を参照しながら従来の空気調和機の通信装置
の一例について説明する。Hereinafter, an example of a conventional communication device for an air conditioner will be described with reference to the drawings.
第３図は従来の空気調和機の通信装置の構成を示すも
のである。第３図において、１はデータ伝送を行う伝送
線、2A,2Bは伝送線上のデータの送受信を行う送受信回
路、3Aは伝送線の反射による伝送データの波形歪を改善
するための終端抵抗、4A,4Bは送受信回路で送受信を行
うことで得られる情報により制御される空気調和機本体
である。FIG. 3 shows a configuration of a communication device of a conventional air conditioner. In FIG. 3, 1 is a transmission line for performing data transmission, 2A and 2B are transmission and reception circuits for transmitting and receiving data on the transmission line, 3A is a terminating resistor for improving waveform distortion of transmission data due to reflection of the transmission line, and 4A. Reference numeral 4B denotes an air conditioner body controlled by information obtained by performing transmission and reception by a transmission and reception circuit.
以上のように構成された空気調和機の通信装置につい
て、以下その動作について説明する。The operation of the communication device of the air conditioner configured as described above will be described below.
伝送線１上のデータは送受信回路2A,2Bで解読されて
空気調和機本体4A,4Bに入力され、空気調和機本体4A,4B
は入力されたデータに応じて機器の制御を行う。The data on the transmission line 1 is decoded by the transmission / reception circuits 2A and 2B and input to the air conditioner main units 4A and 4B, where the data is transmitted to the air conditioner main units 4A and 4B.
Controls the device according to the input data.
一般的に伝送線１の特性のバラツキ、複数台の機器が
接続されるなどの理由から伝送線１上のデータに対し
て、送受信回路2A,2Bと伝送線１との接続部にインピー
ダンスの不一致のために波形の反射が生じる。反射によ
る波形歪を軽減する方法として終端抵抗3Aを接続する。
接続する方法として伝送線１上の伝送データの波形歪を
観測しながら幾種類かの抵抗値の抵抗の中から最も波形
歪のない抵抗を選択し終端抵抗3Aとして伝送線１の配線
設置時に接続工事をする。Generally, the impedance of the connection between the transmission / reception circuits 2A and 2B and the transmission line 1 does not match for the data on the transmission line 1 due to variations in the characteristics of the transmission line 1 and a plurality of devices connected. This causes reflection of the waveform. As a method for reducing waveform distortion due to reflection, a terminating resistor 3A is connected.
As a method of connection, while observing the waveform distortion of the transmission data on the transmission line 1, select a resistor with the least waveform distortion from among several resistance values and connect it as the terminating resistor 3 A when installing the wiring of the transmission line 1. Do the construction.
発明が解決しようとする課題 しかしながら上記の従来の構成では、伝送線の種類、
線の長さ、接続台数及び接続形状が変わる度に終端抵抗
を設定しなければならない。Problems to be Solved by the Invention However, in the above conventional configuration, the type of transmission line,
A terminating resistor must be set each time the line length, the number of connections, and the connection shape change.
また、機器の接続とは別に終端抵抗のユニットの接続
工事を行わなければならず、工事上、高度な技術が必要
とされるばかりか、工事ミスによる機器の誤動作の原因
となるという欠点を有していた。In addition, the connection work of the terminating resistor unit must be performed separately from the connection of the equipment, which not only requires advanced technology in the work, but also has the disadvantage of causing equipment malfunction due to construction mistakes. Was.
本発明は上記従来の課題を解決するもので、接続機器
設置時にアドレス設定を行うだけで同時に終端抵抗を接
続でき、また、複数台の機器が伝送線に接続されている
時には、伝送線の種類、線の長さ、接続台数及び接続形
状が変わることによる伝送データの波形歪への対応がで
き、接続工事の簡易化及び工事期間の短縮を図ることが
できる空気調和機の通信装置を提供することを目的とす
る。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems. A terminal resistor can be connected at the same time only by setting an address at the time of installation of a connected device, and when a plurality of devices are connected to the transmission line, the type of the transmission line is set. A communication device for an air conditioner that can cope with waveform distortion of transmission data due to a change in line length, the number of connected units, and the connection shape, thereby simplifying connection work and shortening the work period. The purpose is to:
課題を解決するための手段 この目的を達成するために請求項（１）記載の空気調
和機の通信装置は、伝送線に接続される機器のアドレス
を設定するためのアドレス設定用スイッチと、スイッチ
が特定のアドレスに設定されると接続信号を発生する接
続信号発生手段と、伝送線の終端抵抗と、接続信号が入
力されると伝送線に並列に終端抵抗を接続するスイッチ
ング回路と、スイッチング回路に並列に接続された強制
接続スイッチとを有している。Means for Solving the Problems In order to achieve this object, a communication device for an air conditioner according to claim (1) is provided with an address setting switch for setting an address of a device connected to a transmission line, and a switch. Connection signal generating means for generating a connection signal when is set to a specific address, a terminating resistor of a transmission line, a switching circuit for connecting a terminating resistor in parallel to the transmission line when a connection signal is input, and a switching circuit And a forced connection switch connected in parallel.
また、請求項（２）記載の空気調和機の通信装置は、
伝送線に接続される機器のアドレスを設定するためのア
ドレス設定用スイッチと、スイッチが特定のアドレスに
設定されると接続信号を発生する接続信号発生手段と、
伝送線の終端抵抗と、接続信号が入力されると伝送線に
並列に終端抵抗を接続するスイッチング回路と、スイッ
チング回路に並列に接続された強制接続スイッチと、ス
イッチング回路と直列に接続された強制解放スイッチと
を有している。The communication device for an air conditioner according to claim (2) is:
An address setting switch for setting an address of a device connected to the transmission line; connection signal generating means for generating a connection signal when the switch is set to a specific address;
A terminating resistor for the transmission line, a switching circuit for connecting a terminating resistor in parallel to the transmission line when a connection signal is input, a forcible connection switch connected in parallel to the switching circuit, and a forcing connected in series to the switching circuit. Release switch.
作用 請求項（１）記載の発明は上記構成によって、機器設
置者が終端抵抗のユニットの接続工事を伴うことなく機
器のアドレスを設定するだけで伝送線に終端抵抗を接続
でき、複数台の機器が伝送線に接続されている時には、
特定のアドレス以外に設定された機器の強制接続スイッ
チを設定して複数個の終端抵抗を並列に接続すること
で、等価的に終端抵抗の値を変化させ伝送線の特性に応
じた終端抵抗を設定することができる。According to the invention as set forth in claim (1), the terminal installer can connect the terminating resistor to the transmission line only by setting the address of the device without the connection work of the terminating resistor unit by the equipment installer. Is connected to the transmission line,
By setting the forced connection switch of the device set to a specific address other than the specified address and connecting multiple terminating resistors in parallel, the value of the terminating resistor is equivalently changed and the terminating resistor according to the characteristics of the transmission line is changed. Can be set.
また、請求項（２）記載の発明は上記構成によって、
機器設置者が終端抵抗のユニットの接続工事を伴うこと
なく機器のアドレスを設定するだけで伝送線に終端抵抗
を接続でき、複数台の機器が伝送線に接続されている時
には、特定のアドレス以外に設定された機器の強制接続
スイッチを設定して複数個の終端抵抗を並列に接続する
ことで、等価的に終端抵抗の値を変化させ伝送線の特性
に応じた終端抵抗を設定することができ、特定のアドレ
スに設定された機器の終端抵抗を強制解放スイッチを設
定して解放することで、終端抵抗の接続箇所を変え伝送
線の特性に応じた箇所に終端抵抗を設定することができ
る。Further, according to the invention described in claim (2),
The terminal installer can connect the terminating resistor to the transmission line only by setting the device address without the need for connection work for the terminating resistor unit.When multiple devices are connected to the transmission line, a device other than the specified address can be used. By setting the forced connection switch of the device set to, and connecting multiple termination resistors in parallel, it is possible to equivalently change the value of the termination resistor and set the termination resistor according to the characteristics of the transmission line By setting a forced release switch to release the terminating resistor of the device set at a specific address, the terminating resistor can be set at a location according to the characteristics of the transmission line by changing the connecting location of the terminating resistor. .
実 施 例 以下本発明の第１の実施例について、図面を参照しな
がら説明する。なお、従来と同一構成については、同一
符号を付してその詳細な説明は省略する。Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The same components as those in the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.
第１図は本発明の第１の実施例における空気調和機の
通信装置の構成を示すものである。第１図において、3B
は終端抵抗、5A,5Bは空気調和機本体4A,4Bのアドレスを
設定するアドレススイッチ、6A,6Bは電源、7A,7Bは保護
抵抗、8A,8Bはプルダウン抵抗群、9A,9Bはグランド、10
A,10BはNOR回路、11A,11Bはアナログスイッチ回路、12
A,12Bは強制接続スイッチである。FIG. 1 shows a configuration of a communication device of an air conditioner according to a first embodiment of the present invention. In FIG. 1, 3B
Is a terminating resistor, 5A and 5B are address switches for setting the addresses of the air conditioner body 4A and 4B, 6A and 6B are power supplies, 7A and 7B are protection resistors, 8A and 8B are pull-down resistor groups, 9A and 9B are grounds, Ten
A and 10B are NOR circuits, 11A and 11B are analog switch circuits, 12
A and 12B are forced connection switches.
以上のように構成された空気調和機の通信装置につい
て、以下その動作について説明する。The operation of the communication device of the air conditioner configured as described above will be described below.
機器設置者が設置時に空気調和機本体4Aのアドレスを
“00"に設定するとアドレススイッチ5Aは全てオープン
となるのでNOR回路10Aへの入力信号は全て“L"となりNO
R回路10Aの出力信号は“H"となる。そのためアナログス
イッチ回路11Aは導通し終端抵抗3Aは伝送線１に並列に
接続される。If the installer sets the address of the air conditioner body 4A to “00” at the time of installation, all the address switches 5A are open, so all the input signals to the NOR circuit 10A are “L” and NO.
The output signal of R circuit 10A becomes "H". Therefore, the analog switch circuit 11A conducts, and the terminating resistor 3A is connected to the transmission line 1 in parallel.
また、空気調和機本体4Bのアドレスを“00"以外に設
定、例えば“01"に設定するとNOR回路10Bへの入力信号
は“LLLLLLLH"となりNOR回路10Bの出力信号は“L"とな
る。そのためアナログスイッチ回路11Bは導通せず終端
抵抗3Bは伝送線１に接続されない。しかし、強制接続ス
イッチ12Bをオンすることで終端抵抗3Bは伝送線１に並
列に接続され、伝送線１には終端抵抗3Aと終端抵抗3Bが
並列に接続されたことになり伝送線１の終端抵抗は等価
的に（終端抵抗3A×終端抵抗3B）／（終端抵抗3A＋終端
抵抗3B）となり小さく可変できる。When the address of the air conditioner body 4B is set to a value other than "00", for example, "01", the input signal to the NOR circuit 10B becomes "LLLLLLLH" and the output signal of the NOR circuit 10B becomes "L". Therefore, the analog switch circuit 11B does not conduct, and the terminating resistor 3B is not connected to the transmission line 1. However, by turning on the forced connection switch 12B, the terminating resistor 3B is connected in parallel to the transmission line 1, and the terminating resistor 3A and the terminating resistor 3B are connected to the transmission line 1 in parallel. The resistance is equivalently (termination resistance 3A x termination resistance 3B) / (termination resistance 3A + termination resistance 3B) and can be changed small.
以上のように本実施例によれば、アドレススイッチ5
A,5Bを特定のアドレスに設定すればNOR回路10A,10Bの出
力によりアナログスイッチ回路11A,11Bが導通し終端抵
抗3A,3Bが接続され、また、アドレススイッチ5A,5Bを特
定のアドレス以外に設定しても強制接続スイッチ12A,12
Bにより終端抵抗3A,3Bが接続されるので、等価的に終端
抵抗の値を変化させ伝送線１の特性に応じた終端抵抗を
設定することができる。As described above, according to the present embodiment, the address switch 5
If A and 5B are set to specific addresses, the output of the NOR circuits 10A and 10B conducts the analog switch circuits 11A and 11B to connect the terminating resistors 3A and 3B, and also sets the address switches 5A and 5B to addresses other than the specific addresses. Forced connection switch 12A, 12 even if set
Since the terminating resistors 3A and 3B are connected by B, it is possible to equivalently change the value of the terminating resistor and set a terminating resistor according to the characteristics of the transmission line 1.
次に、本発明の第２の実施例について、図面を参照し
ながら説明する。なお、従来と同一構成については、同
一符号を付してその詳細な説明は省略する。Next, a second embodiment of the present invention will be described with reference to the drawings. The same components as those in the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.
第２図は本発明の第２の実施例における空気調和機の
通信装置の構成を示すものである。第２図において、3B
は終端抵抗、5A,5Bは空気調和機本体4A,4Bのアドレスを
設定するアドレススイッチ、6A,6Bは電源、7A,7Bは保護
抵抗、8A,8Bはプルダウン抵抗群、9A,9Bはグランド、10
A,10BはNOR回路、11A,11Bはアナログスイッチ回路、12
A,12Bは強制接続スイッチ、13A,13Bは強制解放スイッチ
である。FIG. 2 shows a configuration of a communication device of an air conditioner according to a second embodiment of the present invention. In FIG. 2, 3B
Is a terminating resistor, 5A and 5B are address switches for setting the addresses of the air conditioner body 4A and 4B, 6A and 6B are power supplies, 7A and 7B are protection resistors, 8A and 8B are pull-down resistor groups, 9A and 9B are grounds, Ten
A and 10B are NOR circuits, 11A and 11B are analog switch circuits, 12
A and 12B are forcible connection switches, and 13A and 13B are forcible release switches.
以上のように構成された空気調和機の通信装置につい
て、以下その動作について説明する。The operation of the communication device of the air conditioner configured as described above will be described below.
機器設置者が設置時に空気調和機本体4Aのアドレスを
“00"に設定するとアドレススイッチ5Aは全てオープン
となるのでNOR回路10Aへの入力信号は全て“L"となりNO
R回路10Aの出力信号は“H"となる。そのためアナログス
イッチ回路11Aは導通し終端抵抗3Aは伝送線１に並列に
接続される。If the installer sets the address of the air conditioner body 4A to “00” at the time of installation, all the address switches 5A are open, so all the input signals to the NOR circuit 10A are “L” and NO.
The output signal of R circuit 10A becomes "H". Therefore, the analog switch circuit 11A conducts, and the terminating resistor 3A is connected to the transmission line 1 in parallel.
また、空気調和機本体4Bのアドレスを“00"以外に設
定、例えば“01"に設定するとNOR回路10Bへの入力信号
は“LLLL LLLH"となりNOR回路10Bの出力信号は“L"と
なる。そのためアナログスイッチ回路11Bは導通せず終
端抵抗3Bは伝送線１に接続されない。しかし、強制接続
スイッチ12Bをオンすることで終端抵抗3Bは伝送線１に
並列に接続され、伝送線１には終端抵抗3Aと終端抵抗3B
が並列に接続されたことになり伝送線１の終端抵抗は等
価的に（終端抵抗3A×終端抵抗3B）／（終端抵抗3A＋終
端抵抗3B）となり小さく可変できる。When the address of the air conditioner body 4B is set to a value other than "00", for example, "01", the input signal to the NOR circuit 10B becomes "LLLL LLLH" and the output signal of the NOR circuit 10B becomes "L". Therefore, the analog switch circuit 11B does not conduct, and the terminating resistor 3B is not connected to the transmission line 1. However, by turning on the forcible connection switch 12B, the terminating resistor 3B is connected in parallel to the transmission line 1, and the terminating resistor 3A and the terminating resistor 3B are connected to the transmission line 1.
Are connected in parallel, and the terminating resistance of the transmission line 1 is equivalently (terminating resistance 3A.times.terminating resistance 3B) / (terminating resistance 3A + terminating resistance 3B) and can be changed to a small value.
また、強制解放スイッチ13Aをオフすることで終端抵
抗3Aは伝送線１より解放される。When the forcible release switch 13A is turned off, the terminating resistor 3A is released from the transmission line 1.
以上のように本実施例によれば、アドレススイッチ5
A,5Bを特定のアドレスに設定すればNOR回路10A,10Bの出
力によりアナログスイッチ回路11A,11Bが導通し終端抵
抗3A,3Bが接続され、また、アドレススイッチ5A,5Bを特
定のアドレス以外に設定しても強制接続スイッチ12A,12
Bにより終端抵抗3A,3Bが接続されるので、等価的に終端
抵抗の値を変化させ伝送線１の特性に応じた終端抵抗を
設定することができ、アナログスイッチ回路11A,11Bが
導通しても強制解放スイッチ13A,13Bにより終端抵抗3A,
3Bが解放されるので終端抵抗の接続箇所を変え伝送線の
特性に応じた箇所に終端抵抗を設定することができる。As described above, according to the present embodiment, the address switch 5
If A and 5B are set to specific addresses, the output of the NOR circuits 10A and 10B conducts the analog switch circuits 11A and 11B to connect the terminating resistors 3A and 3B, and also sets the address switches 5A and 5B to addresses other than the specific addresses. Forced connection switch 12A, 12 even if set
Since the terminating resistors 3A and 3B are connected by B, the value of the terminating resistor can be equivalently changed to set a terminating resistor according to the characteristics of the transmission line 1, and the analog switch circuits 11A and 11B become conductive. The termination resistors 3A,
Since 3B is released, the connection location of the terminating resistor can be changed, and the terminating resistor can be set at a location according to the characteristics of the transmission line.
発明の効果 以上のように請求項（１）記載の発明は伝送線に接続
される機器のアドレスを設定するためのアドレス設定用
スイッチと、スイッチが特定のアドレスに設定されると
接続信号を発生する接続信号発生手段と、伝送線の終端
抵抗と、接続信号が入力されると伝送線に並列に終端抵
抗を接続するスイッチング回路と、スイッチング回路に
並列に接続された強制接続スイッチとを設けることによ
り、機器設置者が設置時に特定のアドレスを設定した時
そのアドレスがあらかじめ設定されたアドレスと等しけ
れば自動的に終端抵抗を伝送線に接続するものであり、
また、複数台の機器が接続されている時には複数の終端
抵抗を並列に接続することで終端抵抗の値を等価的に可
変できるものであり、特別な工事を必要とせず簡単な構
成で終端抵抗の接続と可変ができ、スペースも必要とせ
ず、確実に終端抵抗を接続することができ、工事期間の
短縮を図ることができる優れた空気調和機の通信装置を
実現できるものである。As described above, according to the invention described in claim (1), an address setting switch for setting an address of a device connected to the transmission line and a connection signal are generated when the switch is set to a specific address. A connection signal generating means, a terminating resistor of a transmission line, a switching circuit for connecting a terminating resistor in parallel with the transmission line when a connection signal is input, and a forced connection switch connected in parallel to the switching circuit. Therefore, when the equipment installer sets a specific address at the time of installation, if the address is equal to a preset address, the terminal resistor is automatically connected to the transmission line,
In addition, when multiple devices are connected, the value of the terminating resistor can be equivalently varied by connecting a plurality of terminating resistors in parallel. It is possible to realize an excellent communication device of an air conditioner that can securely connect a terminating resistor without requiring a space, can connect a terminating resistor securely, and can shorten a construction period.
また、請求項（２）記載の発明は伝送線に接続される
機器のアドレスを設定するためのアドレス設定用スイッ
チと、スイッチが特定のアドレスに設定されると接続信
号を発生する接続信号発生手段と、伝送線の終端抵抗
と、接続信号が入力されると伝送線に並列に終端抵抗を
接続するスイッチング回路と、スイッチング回路に並列
に接続された強制接続スイッチと、スイッチング回路と
直列に接続された強制解放スイッチとを設けることによ
り、機器設置者が設置時に特定のアドレスを設定した時
そのアドレスがあらかじめ設定されたアドレスと等しけ
れば自動的に終端抵抗を伝送線に接続するものであり、
また、複数台の機器が接続されている時には複数の終端
抵抗を並列に接続することで終端抵抗の値を等価的に可
変できるものであり、さらに、自動的に終端抵抗が接続
された場合でもその解放を可能としたものであり、特別
な工事を必要とせず簡単な構成で終端抵抗の接続と可変
及び接続箇所変更ができ、スペースも必要とせず、確実
に終端抵抗を接続することができ、工事期間の短縮を図
ることができる優れた空気調和機の通信装置を実現でき
るものである。According to a second aspect of the present invention, there is provided an address setting switch for setting an address of a device connected to a transmission line, and a connection signal generating means for generating a connection signal when the switch is set to a specific address. A switching circuit for connecting a terminating resistor in parallel to the transmission line when a connection signal is input, a forcible connection switch connected in parallel to the switching circuit, and a switching circuit connected in series with the switching circuit. By providing a forced release switch, when the equipment installer sets a specific address at the time of installation, if the address is equal to a preset address, the terminal resistor is automatically connected to the transmission line,
In addition, when a plurality of devices are connected, the value of the terminating resistor can be equivalently varied by connecting a plurality of terminating resistors in parallel, and even when the terminating resistor is automatically connected, The terminal resistance can be released, and it is possible to connect and change the termination resistor and change the connection location with a simple configuration without special construction, and it is possible to securely connect the termination resistor without requiring any space. Thus, an excellent air conditioner communication device capable of shortening the construction period can be realized.
第１図は本発明の第１の実施例における空気調和機の通
信装置の回路図、第２図は本発明の第２の実施例におけ
る空気調和機の通信装置の回路図、第３図は従来の空気
調和機の通信装置の回路図である。 １……伝送線、3A,3B……終端抵抗、5A,5B……アドレス
設定用スイッチ、10A,10B……接続信号発生手段、11A,1
1B……スイッチング回路、12A,12B……強制接続スイッ
チ、13A,13B……強制解放スイッチ。FIG. 1 is a circuit diagram of a communication device of an air conditioner according to a first embodiment of the present invention, FIG. 2 is a circuit diagram of a communication device of an air conditioner according to a second embodiment of the present invention, and FIG. It is a circuit diagram of the communication device of the conventional air conditioner. 1 ... transmission line, 3A, 3B ... terminating resistor, 5A, 5B ... address setting switch, 10A, 10B ... connection signal generating means, 11A, 1
1B: Switching circuit, 12A, 12B: Forced connection switch, 13A, 13B: Forced release switch.
Claims (2)
接続される機器のアドレスを決定するためのアドレス設
定用スイッチと、前記スイッチが特定のアドレスに設定
されると接続信号を発生する接続信号発生手段と、前記
伝送線の終端抵抗と、前記接続信号が入力されると前記
伝送線に並列に前記終端抵抗を接続するスイッチング回
路と、前記スイッチング回路に並列に接続された強制接
続スイッチとを備えた空気調和機の通信装置。1. A transmission line for performing data transmission, an address setting switch for determining an address of a device connected to the transmission line, and a connection signal is generated when the switch is set to a specific address. Connection signal generating means, a terminating resistor of the transmission line, a switching circuit for connecting the terminating resistor in parallel with the transmission line when the connection signal is input, and a forced connection switch connected in parallel to the switching circuit A communication device for an air conditioner comprising:
解放スイッチを備えた請求項（１）記載の空気調和機の
通信装置。2. The air conditioner communication device according to claim 1, further comprising a forced release switch connected in series with the switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2319083A JP2926073B2 (en) | 1990-11-21 | 1990-11-21 | Air conditioner communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2319083A JP2926073B2 (en) | 1990-11-21 | 1990-11-21 | Air conditioner communication device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04187932A JPH04187932A (en) | 1992-07-06 |
| JP2926073B2 true JP2926073B2 (en) | 1999-07-28 |
Family
ID=18106306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2319083A Expired - Fee Related JP2926073B2 (en) | 1990-11-21 | 1990-11-21 | Air conditioner communication device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2926073B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043721B (en) * | 2019-12-09 | 2020-11-24 | 珠海格力电器股份有限公司 | A CAN bus matching resistance access method, device, air conditioning unit and system |
-
1990
- 1990-11-21 JP JP2319083A patent/JP2926073B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04187932A (en) | 1992-07-06 |
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