JPH0326198A - Remote control system for varistor - Google Patents
Remote control system for varistorInfo
- Publication number
- JPH0326198A JPH0326198A JP16158289A JP16158289A JPH0326198A JP H0326198 A JPH0326198 A JP H0326198A JP 16158289 A JP16158289 A JP 16158289A JP 16158289 A JP16158289 A JP 16158289A JP H0326198 A JPH0326198 A JP H0326198A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- binary code
- signal
- side device
- station side
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 abstract description 10
- 230000007257 malfunction Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
Landscapes
- Selective Calling Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、遠隔地にある抵抗器の抵抗値の調整を−１続
的に行う可変抵抗器遠隔制御方式に関する，
〔従来の技術〕
第３図は従来の可変抵抗器遠隔制御方式を示すブロンク
図である．
親局側装置２１の制御用可変抵抗器２３を操作すると、
その制御用可変抵抗器２３の両端間の電圧が電圧検出回
路２４にて検出され、その電圧が送信論理部２６へ入力
される．送信論理部２６では、その電圧値に比例した時
間巾のパルス信号を発生させる．そのパルス信号は信号
伝送送信回路２７にて周波数変調され伝送路２８を介し
て子局側装２２２へ伝送される。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a variable resistor remote control system that continuously adjusts the resistance value of a resistor located at a remote location. Figure 3 is a bronc diagram showing the conventional variable resistor remote control system. When the control variable resistor 23 of the master station side device 21 is operated,
The voltage across the control variable resistor 23 is detected by the voltage detection circuit 24, and the voltage is input to the transmission logic section 26. The transmission logic section 26 generates a pulse signal with a time width proportional to the voltage value. The pulse signal is frequency modulated by the signal transmission circuit 27 and transmitted to the slave station side equipment 222 via the transmission line 28.
子局側装置２２の信号伝送受信回路２つにて復調された
パルス信号は、受信論理部３０へ入力される．また発信
回路３２からの高周波パルス信号も受信論理部３０へ入
力され、信号伝送受信回路２９により復調されたパルス
信号が有る間、高周波パルス信号をカウントしてカウン
ト数により復調されたパルス信号のパルス巾時間を測定
する。The pulse signals demodulated by the two signal transmission and reception circuits of the slave station device 22 are input to the reception logic section 30. Further, the high frequency pulse signal from the transmitting circuit 32 is also input to the reception logic section 30, and while the pulse signal demodulated by the signal transmission reception circuit 29 is present, the high frequency pulse signal is counted and the pulse of the pulse signal demodulated by the count number. Measure width time.
そのパルス巾時間により抵抗器切替部３１を切り替える
方式となっていた．
〔発明が解決しようとする課題〕
上述した従来の可変抵抗器遠隔制御方式では、制御用可
変抵抗器を可変しない状態でも、送信論理部及び子局側
装置の受信論理部の電源電圧の変動及び外来ノイズのか
ぶりにより、パルス信号のパルス巾が変化し、その変化
により子局側装置で測定するパルス巾の時間が変化する
ため、抵抗器切替部の切り替え誤動作が発生するという
欠点があった．
〔課題を解決するための手段〕
本発明の可変抵抗器遠隔制御方式は、親局側装置と子局
側装置とを伝送路で結び、前記親局側装置の制御用可変
抵抗器を操作することにより、前記子局側装置の抵抗器
の抵抗値の調整を連続的に行う可変抵抗器遠隔制御方式
において、前記制御用可変抵抗器の両端間の電圧をＡ−
Ｄ変換器によりバイナリコードに変換して、前記バイナ
リコードを前記子局側装置へ伝送し、前記バイナリコ一
ドに合わせて動作する継電器の接点により前記抵抗器の
抵抗値を切り換えるように構成されている。The resistor switching section 31 was switched according to the pulse width time. [Problems to be Solved by the Invention] In the conventional variable resistor remote control method described above, even when the control variable resistor is not varied, fluctuations in the power supply voltage of the transmitting logic section and the receiving logic section of the slave station side device and Due to external noise, the pulse width of the pulse signal changes, and this change changes the pulse width time measured by the slave station device, resulting in a switching malfunction in the resistor switching section. [Means for Solving the Problems] The variable resistor remote control system of the present invention connects a master station device and a slave station device through a transmission path, and operates the control variable resistor of the master station device. By this, in the variable resistor remote control method that continuously adjusts the resistance value of the resistor of the slave station side device, the voltage across the control variable resistor is set to A-
The system is configured to convert the binary code into a binary code by a D converter, transmit the binary code to the slave station device, and switch the resistance value of the resistor by a contact of a relay that operates in accordance with the binary code. There is.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明による可変抵抗器遠隔制御方式の一実施
例を示す全体のブロック図である．また、第２図は本発
明の一実施例を示す抵抗器切替部のブロック図である。FIG. 1 is an overall block diagram showing an embodiment of a variable resistor remote control system according to the present invention. Further, FIG. 2 is a block diagram of a resistor switching section showing one embodiment of the present invention.
第１図において、親局側装置１の制御用可変抵抗器３ａ
には、運用中常に電流が流れており、制御用可変抵抗器
３ａの両端間電圧が電圧検出回路４ａにて常に検出され
ている。その電圧は常にＡ−Ｄ変換器５の入力にかがっ
ており、制御用ボリューム３ａを操作すると、抵抗値が
変化し、よってＡ／Ｄ変換器５の入力にかかる電圧も制
御用ボリューム３ａの抵抗値に伴って変化する．Ａ／Ｄ
変換器５では入力にかかる電圧をパラレルのバイナリコ
ードに変換し、送信論理部６ａへ出力する．送信論理部
６ａでは、パラレルのバイナリコードをシリアルデータ
に変換し、スタートビット，ストップビット，バリティ
ビットを付加して、信号伝送送信回路７ａへ出力する。In FIG. 1, a control variable resistor 3a of the master station device 1
A current always flows through the control variable resistor 3a during operation, and the voltage across the control variable resistor 3a is constantly detected by the voltage detection circuit 4a. The voltage is always applied to the input of the A/D converter 5, and when the control volume 3a is operated, the resistance value changes, so the voltage applied to the input of the A/D converter 5 also changes due to the resistance of the control volume 3a. It changes with the value. A/D
The converter 5 converts the voltage applied to the input into a parallel binary code and outputs it to the transmission logic section 6a. The transmission logic section 6a converts the parallel binary code into serial data, adds a start bit, stop bit, and parity bit, and outputs the data to the signal transmission circuit 7a.
信号伝送送信回路７ａでは、シリアルデータを周波数変
調しＦＳＫ信号として伝送路８ａへ送出する．伝送路８
ａを介して子局側装置２ａの信号伝送受信回路９ａへ入
力され，”−ＦＳＫ信号は、そこで周波数復調によりシ
リアルコード信号に復元され受信論理部１０ａへ出力さ
れる。受信論理部１０ａでは、入力したシリアルコード
信号をパラレルバイナリコードに復元すると共に、バリ
ティチェックを行った後、正常なデータであればバイナ
リコードのそれぞれのビットに対応した抵抗器切替部１
１ａのｎ個の４１電器１３ａ〜１３ｃを動作させる．と
ころで、抵抗器切替部１１ａの直列に結合したｎ個の抵
抗器１４ａ〜１４ｃの抵抗値はバイナリコードの比率に
設定する。継電器１３ａ〜１３ｃのそれぞれの接点１５
ａ〜１５ｃは抵抗器１４ａ〜１４ｃにそれぞれ並列に回
路構成されており、バイナリコードに応じて！１電器１
３ａ〜１３ｃが動作し、当該抵抗器１４ａ〜１４ｃの両
端をショートするため、抵抗器１４ａ〜１４ｃの合成抵
抗値を制御用可変抵抗器３ａの値と一致させることがで
きる。The signal transmission circuit 7a frequency-modulates the serial data and sends it as an FSK signal to the transmission line 8a. Transmission line 8
The ``-FSK signal is inputted to the signal transmission/reception circuit 9a of the slave station side device 2a via a, and is restored to a serial code signal by frequency demodulation there and outputted to the reception logic section 10a.In the reception logic section 10a, After restoring the input serial code signal to parallel binary code and performing a parity check, if the data is normal, the resistor switching unit 1 corresponding to each bit of the binary code
1a's n 41 appliances 13a to 13c are operated. Incidentally, the resistance values of the n resistors 14a to 14c connected in series in the resistor switching section 11a are set to the ratio of the binary code. Each contact 15 of the relays 13a to 13c
A to 15c are configured in parallel with the resistors 14a to 14c, respectively, depending on the binary code! 1 electric appliance 1
3a to 13c operate to short-circuit both ends of the resistors 14a to 14c, so that the combined resistance value of the resistors 14a to 14c can match the value of the control variable resistor 3a.
以上説明したよう本発明は、信号伝送にバイナリコード
を使用することにより、電源電圧の変動に対しても、又
、外来ノイズに対しても論理回路に使用する各素子のス
レショールド電圧までの雑音分、裕度を持つことができ
、抵抗器切替部の切り替え誤動作をなくすことができる
という効果がある．As explained above, by using a binary code for signal transmission, the present invention can withstand fluctuations in power supply voltage and external noise up to the threshold voltage of each element used in a logic circuit. It has the effect of providing a margin for noise and eliminating switching malfunctions in the resistor switching section.
第１図は本発明の一実施例を示す全体のブロック図、第
２図は第１図の可変抵抗器遠隔制御方式の抵抗器切替部
を説明するためのブロック図、第３図は従来の可変抵抗
器遠隔制御方式を示す全体のブロック図である。
ｌａ，ｌｂ・・・親局側装置、２ａ，２ｂ・・・子局側
装置、３ａ，３ｂ・・・制御用可変抵抗器、４ａ，４ｂ
・・・電圧検出回路、５・・・Ａ−Ｄ変換器、６ａ，６
ｂ・・・送出論理部、７ａ，７ｂ・・・信号伝送送信回
路、８ａ，８ｂ・・・伝送路、９ａ，９ｂ・・・信号伝
送受信回路、１０ａ，１０ｂ・・・受信論理部、１１ａ
．１ｌｂ・・・抵抗器切替部、１２・・・発信回路、１
３ａ〜１３ｃ・・・継電器、１４ａ〜１４ｃ・・・抵抗
器、１５ａ〜１５ｃ・・・継電器の接点。FIG. 1 is an overall block diagram showing one embodiment of the present invention, FIG. 2 is a block diagram for explaining the resistor switching section of the variable resistor remote control method of FIG. 1, and FIG. 3 is a block diagram of the conventional FIG. 2 is an overall block diagram showing a variable resistor remote control system. la, lb... Master station side device, 2a, 2b... Slave station side device, 3a, 3b... Control variable resistor, 4a, 4b
...Voltage detection circuit, 5...A-D converter, 6a, 6
b... Sending logic section, 7a, 7b... Signal transmission transmitting circuit, 8a, 8b... Transmission line, 9a, 9b... Signal transmission receiving circuit, 10a, 10b... Reception logic section, 11a
．． 1lb... Resistor switching section, 12... Transmission circuit, 1
3a to 13c...Relay, 14a to 14c...Resistor, 15a to 15c...Relay contact.
Claims (1)
装置の制御用可変抵抗器を操作することにより、前記子
局側装置の抵抗器の抵抗値の調整を連続的に行う可変抵
抗器遠隔制御方式において、前記制御用可変抵抗器の両
端間の電圧をＡ−Ｄ変換器によりバイナリコードに変換
して、前記バイナリコードを前記子局側装置へ伝送し、
前記バイナリコードに合わせて動作する継電器の接点に
より前記抵抗器の抵抗値を切り換えることを特徴とする
可変抵抗器遠隔制御方式。By connecting the master station device and the slave station device with a transmission line and operating the control variable resistor of the master station device, the resistance value of the resistor of the slave station device can be continuously adjusted. In the variable resistor remote control method carried out, the voltage across the control variable resistor is converted into a binary code by an A-D converter, and the binary code is transmitted to the slave station side device,
A variable resistor remote control system, characterized in that the resistance value of the resistor is switched by a contact of a relay that operates according to the binary code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16158289A JPH0326198A (en) | 1989-06-23 | 1989-06-23 | Remote control system for varistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16158289A JPH0326198A (en) | 1989-06-23 | 1989-06-23 | Remote control system for varistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0326198A true JPH0326198A (en) | 1991-02-04 |
Family
ID=15737867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16158289A Pending JPH0326198A (en) | 1989-06-23 | 1989-06-23 | Remote control system for varistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326198A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05268172A (en) * | 1992-03-19 | 1993-10-15 | Tokyo Electron Ind Co Ltd | Transmitter and receiver for proportional control signal |
-
1989
- 1989-06-23 JP JP16158289A patent/JPH0326198A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05268172A (en) * | 1992-03-19 | 1993-10-15 | Tokyo Electron Ind Co Ltd | Transmitter and receiver for proportional control signal |
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