JPS62102174U - - Google Patents
Info
- Publication number
- JPS62102174U JPS62102174U JP19423985U JP19423985U JPS62102174U JP S62102174 U JPS62102174 U JP S62102174U JP 19423985 U JP19423985 U JP 19423985U JP 19423985 U JP19423985 U JP 19423985U JP S62102174 U JPS62102174 U JP S62102174U
- Authority
- JP
- Japan
- Prior art keywords
- light
- voltage conversion
- signal input
- conversion element
- disconnection
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Description
第１図は本考案の一実施例の構成を示す回路図
、第２図は本考案の他の実施例の構成を示す回路
図、第３図は他の実施例の動作説明用タイムチヤ
ートを示す図、第４図は従来例の構成を示す回路
図である。
１０……サンプリング回路、２０……インバー
タ回路、ＡＭＰ……増幅器、Ｃ１〜ＣＮ……コン
デンサ、Ｉ１〜ＩＮ……信号入力端子、Ｋ１〜Ｋ
Ｎ……リレースイツチ、Ｏ……信号出力端子、Ｑ
１〜ＱＮ……リレー、Ｒ１〜ＲＮ……抵抗素子、
Ｘ１〜ＸＮ……光・電圧変換素子。
Fig. 1 is a circuit diagram showing the configuration of one embodiment of the present invention, Fig. 2 is a circuit diagram showing the structure of another embodiment of the present invention, and Fig. 3 is a time chart for explaining the operation of the other embodiment. FIG. 4 is a circuit diagram showing the configuration of a conventional example. 10...Sampling circuit, 20...Inverter circuit, AMP...Amplifier, C1-CN...Capacitor, I1-IN...Signal input terminal, K1-K
N...Relay switch, O...Signal output terminal, Q
1~QN...relay, R1~RN...resistance element,
X1 to XN...light/voltage conversion elements.
Claims (1)
て外部へ出力する回路において、前記各センサの
検出信号をそれぞれ入力する信号入力部と、これ
ら各信号入力部にそれぞれ並列に接続された光・
電圧変換素子と、これら光・電圧変換素子にそれ
ぞれ直列に接続された高インピーダンスを有する
抵抗素子とを具備し、前記信号入力部が正常時に
は前記光・電圧変換素子からの電圧供給を抑制し
、前記信号入力部が断線時には前記光・電圧変換
素子からの所定電圧を出力することにより断線検
出を行なうようにしたことを特徴とする断線検出
回路。 (2) 前記光・電圧変換素子は、断線検出時には
電圧出力動作を休止するようにしたことを特徴と
する実用新案登録請求の範囲第(1)項記載の断線
検出回路。[Claims for Utility Model Registration] (1) In a circuit that sequentially selects detection signals from a plurality of sensors and outputs them to the outside, a signal input section that inputs the detection signals of each of the sensors, and each of these signal input sections. The light beams connected in parallel to
comprising a voltage conversion element and a resistance element having high impedance connected in series to each of these light/voltage conversion elements, suppressing voltage supply from the light/voltage conversion element when the signal input section is normal; A disconnection detection circuit, characterized in that when the signal input section is disconnected, disconnection is detected by outputting a predetermined voltage from the light/voltage conversion element. (2) The disconnection detection circuit according to claim (1), wherein the light/voltage conversion element is configured to suspend voltage output operation when a disconnection is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19423985U JPS62102174U (en) | 1985-12-19 | 1985-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19423985U JPS62102174U (en) | 1985-12-19 | 1985-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62102174U true JPS62102174U (en) | 1987-06-29 |
Family
ID=31151028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19423985U Pending JPS62102174U (en) | 1985-12-19 | 1985-12-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62102174U (en) |
-
1985
- 1985-12-19 JP JP19423985U patent/JPS62102174U/ja active Pending
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