JPS6144944U

JPS6144944U - Control cutoff circuit in case of transmission abnormality in remote control device

Info

Publication number: JPS6144944U
Application number: JP1984130273U
Authority: JP
Inventors: 博文熊本
Original assignee: 住友電気工業株式会社
Priority date: 1984-08-27
Filing date: 1984-08-27
Publication date: 1986-03-25

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案の遠隔制御装置における伝送異常時の制
御遮断回路のブロック図。第２図は異常検出回路の回路例図。第３図は異常検出回路の第２の回路例図。一第４図は異常検出回路の第３の回路例図。第５図は第２図の回路に於けるＡ点、Ｅ点、Ｂ点の電圧
波形例図。１はＡ点、２はＥ点、３はＢ点の波形を示す。１・・・・・・異常検出回路、２・・・・・・リレー、
３・・・・・・外部回路遮断接点、４・・・・・・受信
回路、５・・・・・・復調回路、６・・・・・・受信デ
ータ出力。FIG. 1 is a block diagram of a control cutoff circuit in the case of transmission abnormality in the remote control device of the present invention. FIG. 2 is a circuit example diagram of an abnormality detection circuit. FIG. 3 is a second circuit example diagram of the abnormality detection circuit. 1. FIG. 4 is a third circuit example diagram of the abnormality detection circuit. FIG. 5 is an example of voltage waveforms at points A, E, and B in the circuit shown in FIG. 2. 1 shows the waveform at point A, 2 shows the waveform at point E, and 3 shows the waveform at point B. 1... Abnormality detection circuit, 2... Relay,
3... External circuit cutoff contact, 4... Receiving circuit, 5... Demodulation circuit, 6... Received data output.

Claims

[Scope of utility model registration request]

A pulse train containing a modulated carrier wave or modulating signal! Therefore, the modulated signal S is transmitted to a remote location, the modulated signal S is demodulated on the remote terminal side as received data, and the equipment on the terminal side is controlled by the received data. The presence or absence of the signal is detected by an abnormality detection circuit 1 including a delay circuit with a time constant T longer than the maximum width τ of the received signal, and when the received signal is not present, the connection between the power supply of the device to be controlled and the A control cutoff circuit in the event of a transmission abnormality in a remote control device, characterized in that the circuit is configured to cut off a connection between the two.