JPH04187932A - Communication device of air conditioner - Google Patents
Communication device of air conditionerInfo
- Publication number
- JPH04187932A JPH04187932A JP2319083A JP31908390A JPH04187932A JP H04187932 A JPH04187932 A JP H04187932A JP 2319083 A JP2319083 A JP 2319083A JP 31908390 A JP31908390 A JP 31908390A JP H04187932 A JPH04187932 A JP H04187932A
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- address
- circuit
- air conditioner
- terminating resistor
- 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.)
- Granted
Links
- 238000004891 communication Methods 0.000 title claims description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000004904 shortening Methods 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
Abstract
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。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a communication device for an air conditioner that transmits data 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号公報）。Conventional technology In recent years, the development of air conditioners that control multiple devices using data transmission technology has been progressing (for example,
-196928).
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。An example of a conventional communication device for an air conditioner will be described below 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 the configuration of a conventional communication device for an air conditioner. In FIG. 3, 1 is a transmission line that transmits data, 2A and 2B are transmitting and receiving circuits that transmit and receive data on the transmission line, 3A is a terminating resistor for improving waveform distortion of transmitted data due to reflection on the transmission line, and 4A , 4B is an air conditioner main body that is controlled by information obtained by transmitting and receiving with a transmitting and receiving 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 air conditioner communication device 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 transmitting/receiving circuits 2A, 2B and input to the air conditioner main bodies 4A, 4B, and the air conditioner main bodies 4A, 4B control the equipment according to the input data.
−船釣に伝送線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。-Due to reasons such as variations in the characteristics of the transmission line 1 and the connection of multiple devices during boat fishing, the data on the transmission line 1 may be
Waveform reflection occurs at the connection between the transmitting/receiving circuits 2A, 2B and the transmission line 1 due to impedance mismatch. A terminating resistor 3A is connected as a method of reducing waveform distortion due to reflection. As a connection method, while observing the waveform distortion of the transmitted data on the transmission line 1, select the resistor with the least waveform distortion from among several types of resistance values, and connect it as a terminating resistor of 3A when wiring the transmission line 1. Do construction work.
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, a terminating resistor must be set every time the type of transmission line, line length, number of connected devices, and 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なず、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, it is necessary to connect the terminating resistor unit separately from the equipment connection, which not only requires advanced technology, but also has the disadvantage that construction errors can cause equipment malfunctions. had.
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たけで同時に終端抵抗を接続
でき、また、複数台の機器か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
か変わることによる伝送データの波形歪への対応かでき
、接続工事の簡易化及び工事期間の短縮を図ることかで
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
。The present invention solves the above-mentioned conventional problems. It is possible to connect a terminating resistor at the same time by simply setting an address when installing a connected device, and when multiple devices are connected to a transmission line, the type of transmission line To provide a communication device for an air conditioner that can cope with waveform distortion of transmitted data due to changes in line length, number of connected units, and connection shape, and can simplify connection work and shorten construction 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 Problem To achieve this object, a communication device for an air conditioner according to claim (1) includes an address setting switch for setting an address of a device connected to a transmission line, and a switch. A connection signal generating means that generates a connection signal when the is set to a specific address, a terminating resistor for the transmission line, a switching circuit that connects the terminating resistor in parallel to the transmission line when the connection signal is input, and a switching circuit. and a forced connection switch connected in parallel to the .
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) further includes an address setting switch for setting an address of a device connected to the transmission line, and a connection signal that is transmitted when the switch is set to a specific address. A connection signal generating means to be generated, a terminating resistor of the transmission line, a switching circuit that connects the terminating resistor in parallel to the transmission line when a connection signal is input, a forced connection switch connected in parallel to the switching circuit, and a switching circuit. and a forced release switch connected in series with the circuit.
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。Operation The invention described in claim (1) has the above configuration, which allows the equipment installer to connect the terminating resistor to the transmission line by simply setting the address of the equipment without any connection work for the terminating resistor unit. When a device is connected to a transmission line, by setting the forced connection switch for devices set to addresses other than a specific address and connecting multiple terminating resistors in parallel,
By equivalently changing the value of the terminating resistor, it is possible to set the terminating resistor according to the characteristics of the transmission line.
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、複数台の機器か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
。In addition, the invention as claimed in claim (2) has the above-mentioned configuration, so that the equipment installer can connect the terminating resistor to the transmission line by simply setting the address of the equipment without any connection work for the terminating resistor unit. When connected to a device or transmission line, you can equivalently change the value of the terminating resistor by setting the forced connection switch of the device that is set to an address other than a specific address and connecting multiple terminating resistors in parallel. By setting the forced release switch to release the terminating resistor of a device set to a specific address, you can change the connection point of the terminating resistor and disconnect the transmission line. A terminating resistor can be set at a location according to the characteristics of the terminal.
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。EXAMPLE A first example of the present invention will be described below with reference to the drawings. It should be noted that the same components as those in the prior art are given the same reference numerals and detailed explanation 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は保層抵抗、８Ａ、８Ｂはプルダウン抵
抗群、９Ａ。FIG. 1 shows the configuration of a communication device for an air conditioner according to a first embodiment of the present invention. In Figure 1, 3B
is a terminal resistor, 5A, 5B is an address switch that sets the address of the air conditioner body 4A, 4B, 6A, 6B is a power supply, 7A, 7B is a storage resistor, 8A, 8B is a group of pull-down resistors, 9A.
９Ｂはグランド、ＩＯＡ、ＩＯＢはＮＯＲ回路、１１Ａ
、ＩＩＢはアナログスイッチ回路、１２Ａ。9B is ground, IOA, IOB are NOR circuits, 11A
, IIB is an analog switch circuit, 12A.
１２Ｂは強制接続スイッチである。12B is a forced connection switch.
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 air conditioner communication device 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のアトレスヲ
”ＯＯ”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ＮＯＲ回路１゜Ａ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 equipment installer sets the address of the air conditioner main body 4A to "OO" during installation, all address switches 5A will be open, so all input signals to the NOR circuit 10A will be "OO".
Therefore, the analog switch circuit 11A becomes conductive and the terminating resistor 3A is connected in parallel to the transmission line 1.
また、空気調和機本体４Ｂのアドレスを”ｏｏ”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１
０Ｂ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か並列に接続さ
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３ＡＸ終端抵抗３Ｂ）／（終端抵抗３Ａ十終端抵抗３
Ｂ）となり小さく可変できる。Also, if the address of the air conditioner body 4B is set to something other than "oo", for example to "01", the input signal to the NOR circuit 10B becomes "LLLLLLLLH" and the NOR circuit 1
The output signal of 0B becomes "L". Therefore, the analog switch circuit 11B is not conductive 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 terminating resistor 3B are connected in parallel to the transmission line 1. The resistance is equivalently (terminal resistor 3AX terminal resistor 3B)/(terminal resistor 3A + terminal resistor 3)
B) and can be changed to a small value.
以上のように本実施例によれば、アドレススイッチ５Ａ
、５Ｂを特定のアドレスに設定すればＮ。As described above, according to this embodiment, the address switch 5A
, N if you set 5B to a specific address.
ＲＯｏ路１０Ａ、ＩＯＢの出力によりアナログスイッチ
回路１１Ａ、ＩＩＢ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、１２Ｂ
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。The analog switch circuits 11A and IIB are made conductive by the outputs of the ROo path 10A and IOB, and the terminating resistors 3A and 3B are connected. Also, even if the address switches 5A and 5B are set to a address other than a specific address, the forced connection switches 12A and 12B are turned on.
Since the terminating resistors 3A and 3B are connected, it is possible to equivalently change the value of the terminating resistor and set the 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. It should be noted that the same components as those in the prior art are given the same reference numerals and detailed explanation 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。FIG. 2 shows the configuration of a communication device for an air conditioner in a second embodiment of the present invention. In Figure 2, 3B
is a terminal resistor, 5A, 5B is an address switch that sets the address of the air conditioner body 4A, 4B, 6A, 6B is a power supply, 7A, 7B is a protection resistor, 8A, 8B is a group of pull-down resistors, 9A.
９Ｂはグランド、ＩＯＡ、 １０ＢはＮＯＲ回路、１
１Ａ、ＩＩＢはアナログスイッチ回路、１２Ａ。9B is ground, IOA, 10B is NOR circuit, 1
1A and IIB are analog switch circuits, 12A.
１２Ｂは強制接続スイッチ、１３Ａ、１３Ｂは強制解放
スイッチである。12B is a forced connection switch, and 13A and 13B are forced 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 air conditioner communication device 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
ブンとなるのでＮＯＲ回路１０Ａへの入力信号は全て”
Ｌ”となりＮＯＲ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 equipment installer sets the address of the air conditioner main body 4A to "00" at the time of installation, all address switches 5A will be set to oven, so all input signals to the NOR circuit 10A will be "00".
The output signal of the NOR circuit 10A becomes "H". Therefore, the analog switch circuit 11A becomes conductive and the terminating resistor 3A is connected in parallel to the transmission line 1.
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ｌの終端抵抗は等価的に
（終端抵抗３Ａｘ終端抵抗３Ｂ）／（終端抵抗３Ａ十終
端抵抗３Ｂ）となり小さく可変できる。Also, if the address of the air conditioner main 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 NOR
The output signal of the circuit 10B becomes "L". Therefore, the analog switch circuit 11B is not conductive and the terminating resistor 3B is not connected to the transmission line 1. However, forced connection switch 12B
By turning on, the terminating resistor 3B is connected in parallel to the transmission line 1, and the terminating resistor 3A and 3B are connected in parallel to the transmission line 1, so the terminating resistor of the transmission line 1 is equivalently ( It becomes terminating resistor 3A x terminating resistor 3B)/(terminating resistor 3A + terminating resistor 3B) and can be varied 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。Furthermore, the termination resistor 3A is released from the transmission line 1 by turning off the forced release switch 13A.
以上のように本実施例によれば、アドレススイッチ５Ａ
、５Ｂを特定のアドレスに設定すればＮ。As described above, according to this embodiment, the address switch 5A
, N if you set 5B to a specific address.
Ｒ回路１０Ａ、ＩＯＢの出力によりアナログスイッチ回
路１１Ａ、ＩＩＢ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、１２Ｂ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。The analog switch circuits 11A and IIB are made conductive by the outputs of the R circuits 10A and IOB, and the terminating resistors 3A and 3B are connected.Also, even if the address switches 5A and 5B are set to other than a specific address, the forced connection switches 12A and 12B Since the terminating resistors 3A and 3B are connected, the value of the terminating resistor can be changed equivalently to set the terminating resistor according to the characteristics of the transmission line 1, and the analog switch circuit 11A,
Even if 11B is conductive, the termination resistors 3A and 3B are released by the forced release switches 13A and 13B, so that the connection point of the termination resistor can be changed and the termination 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す簡単な構成
で終端抵抗の接続と可変ができ、スペースも必要とせす
、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。Effects of the Invention As described above, the invention described in claim (1) includes an address setting switch for setting the address of a device connected to a transmission line, and a connection signal that is generated when the switch is set to a specific address. a terminating resistor for the transmission line, a switching circuit that connects the terminating resistor in parallel to the transmission line when a connection signal is input, and a forced connection switch connected in parallel to the switching circuit. When the equipment installer sets a specific address during installation, if that address is equal to the preset address, the terminating resistor is automatically connected to the transmission line. By connecting multiple terminating resistors in parallel, the value of the terminating resistor can be equivalently varied.The terminating resistor can be connected and varied with a simple configuration that does not require special construction, and it also saves space. Accordingly, it is possible to realize an excellent communication device for an air conditioner that can reliably connect the required terminal resistor and shorten the 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、
接続信号か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。In addition, the invention described in claim (2) includes 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. and the terminating resistance of the transmission line,
By providing a switching circuit that connects a terminating resistor in parallel to the transmission line when a connection signal is input, a forced connection switch connected in parallel to the switching circuit, and a forced release switch connected in series with the switching circuit. ,
When the equipment installer sets a specific address during installation, if that address is equal to the preset address, the terminating resistor is automatically connected to the transmission line. Also, when multiple equipment is connected In some cases, by connecting multiple terminating resistors in parallel, the value of the terminating resistor can be equivalently varied.Furthermore, even if the terminating resistor is automatically connected, it can be released. The terminating resistor can be connected and varied and the connection location can be changed with a simple configuration without the need for extensive construction work, and the terminating resistor can be connected reliably without the need for space, which is an advantage in shortening the construction period. This makes it possible to realize a communication device for an air conditioner.
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。
１８０．・伝送線、３Ａ、３Ｂ、、、、終端抵抗、５Ａ
。
５ Ｂ、、、・アドレス設定用スイッチ、ＩＯＡ、１０
Ｂ、、、、接続信号発生手段、１１ Ａ、 １１ Ｂ
、、、、スイッチング回路、１２Ａ、１２Ｂ、、、、強
制接続ス第３図FIG. 1 is a circuit diagram of a communication device for an air conditioner according to a first embodiment of the present invention, FIG. 2 is a circuit diagram of a communication device for an air conditioner according to a second embodiment of the present invention, and FIG. FIG. 1 is a circuit diagram of a conventional communication device for an air conditioner. 180.・Transmission line, 3A, 3B, terminating resistor, 5A
. 5 B...Address setting switch, IOA, 10
B. Connection signal generating means, 11 A, 11 B
,,,,Switching circuit, 12A, 12B,,,,forced connection Fig. 3
Claims (2)
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 data transmission, an address setting switch for determining the address of a device connected to the transmission line, and a connection signal that generates a connection signal when the switch is set to a specific address. a generating means, a terminating resistor of the transmission line, and a switching circuit that connects the terminating resistor in parallel to the transmission line when the connection signal is input;
A communication device for an air conditioner, comprising: a forced connection switch connected in parallel to the switching circuit.
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 communication device for an air conditioner 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 true JPH04187932A (en) | 1992-07-06 |
| JP2926073B2 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043721A (en) * | 2019-12-09 | 2020-04-21 | 珠海格力电器股份有限公司 | CAN bus matching resistor access method and device, air conditioning unit and system |
-
1990
- 1990-11-21 JP JP2319083A patent/JP2926073B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111043721A (en) * | 2019-12-09 | 2020-04-21 | 珠海格力电器股份有限公司 | CAN bus matching resistor access method and device, air conditioning unit and system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2926073B2 (en) | 1999-07-28 |
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