JPS60129643U

JPS60129643U - Abnormality detection circuit

Info

Publication number: JPS60129643U
Application number: JP1627584U
Authority: JP
Inventors: 大浦　幹夫
Original assignee: 横河電機株式会社
Priority date: 1984-02-08
Filing date: 1984-02-08
Publication date: 1985-08-30

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１実施例を示すブロック図、第２図
は第１図の実施例の各部の電圧波形を示す波形図、第３
図は第１図の実施例の比較器出力部の他の実施例を示す
ブロック図である。１・・・電源端子、２・・・電位決定回路、３，４・・
・平滑回路、６・・・基準電位回路、７〜１０・・・比
較器、】□９　’２・・・電源リード線、］３．　］、
・・・信号リード線、１５？　１６・・・信号線。Figure 1' is a block diagram showing one embodiment of the present invention, Figure 2 is a waveform diagram showing voltage waveforms at various parts of the embodiment of Figure 1, and Figure 3 is a block diagram showing one embodiment of the present invention.
This figure is a block diagram showing another embodiment of the comparator output section of the embodiment of FIG. 1. 1... Power supply terminal, 2... Potential determining circuit, 3, 4...
・Smoothing circuit, 6...Reference potential circuit, 7-10...Comparator,]□9'2...Power supply lead wire,]3. ],
...Signal lead wire, 15? 16...Signal line.

Claims

[Scope of utility model registration request]

A bridge circuit including at least one strain gauge and having a power lead wire to which AC power is supplied and a signal lead wire for extracting a signal, and a signal wire connected to the signal lead wire when the bridge circuit is disconnected. a potential determining circuit that determines a potential; a smoothing circuit that is connected to the potential determining circuit and smoothes the signal; a reference potential circuit that is connected to a reference power source and creates a predetermined reference potential; an abnormality detection circuit comprising a comparator to which the output voltage of the smoothing circuit is input at an end thereof and detecting an abnormality of the bridge circuit;