JPH0257075U - - Google Patents
Info
- Publication number
- JPH0257075U JPH0257075U JP13646788U JP13646788U JPH0257075U JP H0257075 U JPH0257075 U JP H0257075U JP 13646788 U JP13646788 U JP 13646788U JP 13646788 U JP13646788 U JP 13646788U JP H0257075 U JPH0257075 U JP H0257075U
- Authority
- JP
- Japan
- Prior art keywords
- potential
- disconnection
- output
- harness
- detection device
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims 6
- 230000008054 signal transmission Effects 0.000 claims 3
- 230000005856 abnormality Effects 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Description
第１図はこの考案に係る断線検出装置の一実施
例を示す回路図、第２図はこの一実施例の装置の
取付け状態を示す概略ブロツク図、第３図ａ，ｂ
はこの一実施例の動作を説明するための信号波形
図、第４図はこの考案にかかる断線検出方法の一
実施例を説明するための概略ブロツク図、第５図
はその概略回路図、第６図ａ，ｂは一般的な半断
線状態を説明するための部分拡大断面図、第７図
は従来の断線検出装置の一例を説明するための概
略ブロツク構成図である。
２５…内部ハーネス、２５Ａ，２５Ｂ，２５Ｃ
…単線、３２Ａ，３２Ｂ，３２Ｃ…電位発生用抵
抗、３３Ａ，３３Ｂ，３３Ｃ…比較器、３５…フ
リツプクロツプ回路、３６…断線状態表示器、３
８Ａ，３８Ｂ，３８Ｃ…ツエナーダイオード。
Fig. 1 is a circuit diagram showing one embodiment of the disconnection detection device according to this invention, Fig. 2 is a schematic block diagram showing the installation state of the device of this embodiment, and Figs. 3 a and b.
is a signal waveform diagram for explaining the operation of this embodiment, FIG. 4 is a schematic block diagram for explaining an embodiment of the disconnection detection method according to this invention, FIG. 5 is a schematic circuit diagram thereof, and FIG. 6a and 6b are partially enlarged sectional views for explaining a general half-wire breakage state, and FIG. 7 is a schematic block diagram for explaining an example of a conventional wire breakage detection device. 25...Internal harness, 25A, 25B, 25C
...Single wire, 32A, 32B, 32C...Resistor for potential generation, 33A, 33B, 33C...Comparator, 35...Flip crop circuit, 36...Disconnection status indicator, 3
8A, 38B, 38C... Zener diode.
Claims (1)
ら引出された複数本の単線よりなる信号伝送用ハ
ーネスの断線を検出する断線検出装置において、 前記ハーネスの端部で複数の上記単線毎に接続
され、その単線が断線したとき通常の信号電位よ
り高い異常電位を発生させる電位引上げ手段と、 前記電位引上げ手段の接続点近傍で前記各単線
毎に一方側が接続されると共に、他方側に前記信
号電位と前記異常電位との中間の値を有する一定
の基準電位が入力され、異常電位が発生したとき
に出力を発生する比較器と、 前記複数の比較器が出力を発生したことを保持
する保持回路と、 前記保持回路の出力に基づいて各単線毎に断線
異常を表示する断線状態表示器とを備えた断線検
出装置。 ２ 前記可動機構内の前記ハーネスの各単線には
、前記信号電位が所定値を超えないようにするク
リツプ手段が設けられて成る請求項第１項記載の
断線検出装置。 ３ 自動機械の可動機構に設けられた発信回路か
ら引出された複数本の単線よりなる信号伝送用ハ
ーネスの断線を検出する断線検出装置において、 前記可動機構を独立に駆動する、前記信号伝送
用ハーネスとは別に設けられたケーブルと、 前記ハーネスの端部で複数の上記単線毎に接続
され、その単線が断線したとき通常の信号電位よ
り高い異常電位を発生させる電位引上げ手段と、 前記各単線ごとに前記電位引上げ手段の接続点
近傍の電位および前記信号電位と前記異常電位と
の中間の値を有する一定の基準電位が入力され、
異常電位が発生したときに出力とを比較器で比較
してその比較器が出力を発生したことを保持する
保持回路と、 前記保持回路の出力に基づいて各単線毎に断線
異常を表示する断線状態表示器とを備えた断線検
出装置。[Claims for Utility Model Registration] 1. A disconnection detection device for detecting a disconnection in a signal transmission harness consisting of a plurality of single wires drawn out from a transmitting circuit provided in a movable mechanism of an automatic machine, comprising: potential pulling means connected to each of the plurality of single wires and generating an abnormal potential higher than a normal signal potential when the single wire is disconnected; and one side connected to each of the single wires near the connection point of the potential raising means. and a comparator that receives a constant reference potential having an intermediate value between the signal potential and the abnormal potential on the other side and generates an output when an abnormal potential occurs; and the plurality of comparators generate an output. A disconnection detection device comprising: a holding circuit that holds that a disconnection has occurred; and a disconnection status indicator that displays a disconnection abnormality for each single wire based on the output of the holding circuit. 2. The disconnection detection device according to claim 1, wherein each single wire of the harness in the movable mechanism is provided with clip means for preventing the signal potential from exceeding a predetermined value. 3. A disconnection detection device for detecting a disconnection in a signal transmission harness made of a plurality of single wires drawn out from a transmission circuit provided in a movable mechanism of an automatic machine, wherein the signal transmission harness independently drives the movable mechanism. a cable provided separately from the harness; a potential raising means that is connected to each of the plurality of single wires at the end of the harness and generates an abnormal potential higher than a normal signal potential when the single wire is disconnected; and for each of the single wires. a constant reference potential having a potential near the connection point of the potential raising means and an intermediate value between the signal potential and the abnormal potential is input to;
A holding circuit that compares the output with a comparator when an abnormal potential occurs and holds that the comparator has generated an output, and a disconnection that indicates a disconnection abnormality for each single wire based on the output of the holding circuit. A disconnection detection device equipped with a status indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988136467U JPH07952Y2 (en) | 1988-10-19 | 1988-10-19 | Disconnection detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988136467U JPH07952Y2 (en) | 1988-10-19 | 1988-10-19 | Disconnection detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0257075U true JPH0257075U (en) | 1990-04-25 |
| JPH07952Y2 JPH07952Y2 (en) | 1995-01-11 |
Family
ID=31397006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988136467U Expired - Lifetime JPH07952Y2 (en) | 1988-10-19 | 1988-10-19 | Disconnection detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07952Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09113569A (en) * | 1995-10-20 | 1997-05-02 | Seiko Epson Corp | Method of detecting malfunction between terminals in connector part |
| WO2015147062A1 (en) * | 2014-03-27 | 2015-10-01 | シチズンファインテックミヨタ株式会社 | Disconnection sensing circuit for pressure detection device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866497U (en) * | 1981-10-29 | 1983-05-06 | 日本電気ホームエレクトロニクス株式会社 | Signal line diagnostic circuit |
-
1988
- 1988-10-19 JP JP1988136467U patent/JPH07952Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866497U (en) * | 1981-10-29 | 1983-05-06 | 日本電気ホームエレクトロニクス株式会社 | Signal line diagnostic circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09113569A (en) * | 1995-10-20 | 1997-05-02 | Seiko Epson Corp | Method of detecting malfunction between terminals in connector part |
| WO2015147062A1 (en) * | 2014-03-27 | 2015-10-01 | シチズンファインテックミヨタ株式会社 | Disconnection sensing circuit for pressure detection device |
| JPWO2015147062A1 (en) * | 2014-03-27 | 2017-04-13 | シチズンファインデバイス株式会社 | Disconnection detection circuit of pressure detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07952Y2 (en) | 1995-01-11 |
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