JPH0989974A - Detecting device of connector falling-off and power source abnormality - Google Patents
Detecting device of connector falling-off and power source abnormalityInfo
- Publication number
- JPH0989974A JPH0989974A JP25029595A JP25029595A JPH0989974A JP H0989974 A JPH0989974 A JP H0989974A JP 25029595 A JP25029595 A JP 25029595A JP 25029595 A JP25029595 A JP 25029595A JP H0989974 A JPH0989974 A JP H0989974A
- Authority
- JP
- Japan
- Prior art keywords
- connector
- signal line
- pins
- power source
- phototransistor
- 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
Landscapes
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はコネクタを介して上
位装置に接続される下位装置の異常としてのコネクタ脱
落と電源異常を上位装置が検出する装置、特にこの異常
を検出するために用いるコネクタのピン数を削減し得る
ようにしたコネクタ脱落と電源異常の検出装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device in which a host device detects a connector dropout and a power supply abnormality as an abnormality of a lower device connected to a host device through a connector, and more particularly to a connector used for detecting this abnormality. The present invention relates to a connector dropout and power supply abnormality detection device capable of reducing the number of pins.
【０００２】なお、以下各図において同一の符号は同一
もしくは相当部分を示す。[0002] In the drawings, the same reference numerals indicate the same or corresponding parts.
【０００３】[0003]
【従来の技術】図３はこの種の異常検出装置の一般的な
構成例を示す。同図において０１は上位装置、０２はケ
ーブル等により上位装置０１に接続される下位装置、Ｃ
Ｎ１とＣＮ２はこの接続に用いられる、夫々上位装置０
１側と下位装置０２側の多数のピンを持つコネクタ、Ｐ
１〜Ｐ４はこの例ではコネクタＣＮ２側からコネクタＣ
Ｎ１側に挿入されるコネクタピンである。2. Description of the Related Art FIG. 3 shows an example of a general configuration of an abnormality detecting device of this type. In the figure, 01 is a host device, 02 is a lower device connected to the host device 01 by a cable, C
N1 and CN2 are used for this connection, respectively, host device 0
A connector with a large number of pins on the 1 side and the lower device 02 side, P
1 to P4 are connector C from the connector CN2 side in this example.
It is a connector pin inserted on the N1 side.
【０００４】また下位装置０２内において、１はコネク
タＣＮ２のピンＰ１，Ｐ２間を結ぶコネクタ脱落検出信
号線、２は下位装置の電源電圧、５は電圧検出素子とし
てのフォトカプラ、３は電源電圧２によりフォトカプラ
５のフォトダイオード５Ｄに流れる電流を定める抵抗、
４はこのフォトカプラ５のフォトトランジスタ５Ｔを通
りコネクタＣＮ２のピンＰ３，Ｐ４間を結ぶ電圧異常検
出信号線である。In the lower device 02, 1 is a connector drop detection signal line connecting between the pins P1 and P2 of the connector CN2, 2 is a power supply voltage of the lower device, 5 is a photocoupler as a voltage detecting element, and 3 is a power supply voltage. A resistor that determines the current flowing through the photodiode 5D of the photocoupler 5 by
Reference numeral 4 denotes a voltage abnormality detection signal line that passes through the phototransistor 5T of the photocoupler 5 and connects between the pins P3 and P4 of the connector CN2.
【０００５】また上位装置０１内において、６はコネク
タＣＮ１に挿入されたピンＰ１に接続されるコネクタ異
常検出回路、７は同じくコネクタＣＮ１に挿入されたピ
ンＰ３に接続される電源異常検出回路、８はコネクタＣ
Ｎ１に挿入されたピンＰ２とＰ４に接続される接地電位
である。図３の回路ではコネクタＣＮ１とＣＮ２が接続
されるとコネクタ異常検出回路６は、コネクタピンＰ１
→コネクタ脱落検出信号線１→コネクタピンＰ２の経路
で接地電位８を検出することができ、この接地電位８の
検出の有と無により夫々コネクタ脱落の無と有を判別す
ることができる。In the host device 01, 6 is a connector abnormality detecting circuit connected to the pin P1 inserted in the connector CN1, 7 is a power abnormality detecting circuit connected to the pin P3 similarly inserted in the connector CN1, and 8 Is connector C
This is the ground potential connected to the pins P2 and P4 inserted in N1. In the circuit of FIG. 3, when the connectors CN1 and CN2 are connected, the connector abnormality detection circuit 6 causes the connector pin P1.
→ Connector disconnection detection signal line 1 → The ground potential 8 can be detected through the path of the connector pin P2, and it can be determined whether or not the connector is disconnected, depending on whether or not the ground potential 8 is detected.
【０００６】同様にこのとき電源異常検出回路７は、下
位装置０２側の電源電圧２が存在すれば抵抗３を介しフ
ォトカプラ５のフォトダイオード５Ｄに電流が流れ、フ
ォトトランジスタ５Ｔが導通するので、コネクタピンＰ
３→電源異常検出信号線４→フォトトランジスタ５Ｔ→
コネクタピンＰ４の経路で接地電位８を検出することが
でき、この接地電位８の検出の有と無により夫々電源電
圧２の有と無を判別することができる。Similarly, at this time, in the power supply abnormality detection circuit 7, if the power supply voltage 2 on the lower device 02 side exists, a current flows through the photodiode 5D of the photocoupler 5 through the resistor 3 and the phototransistor 5T becomes conductive. Connector pin P
3 → power supply abnormality detection signal line 4 → phototransistor 5T →
The ground potential 8 can be detected through the path of the connector pin P4, and the presence or absence of the detection of the ground potential 8 can determine the presence or absence of the power supply voltage 2, respectively.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら図３の回
路はコネクタ脱落と電源異常を検出するには、４本のコ
ネクタピンの配線接続と２つの検出回路を必要としてお
り、これはコネクタピンを余計に専有し、検出回路等部
品点数も多くなり信頼性も低くなるという問題がある。However, the circuit of FIG. 3 requires wiring connection of four connector pins and two detection circuits in order to detect connector disconnection and power failure, which is an extra connector pin. However, there is a problem in that the number of parts such as the detection circuit is large and the reliability is low.
【０００８】そこで本発明はこの問題を解消できるコネ
クタ脱落と電源異常の検出装置を提供することを課題と
する。[0008] Therefore, an object of the present invention is to provide a device for detecting connector disconnection and power supply abnormality that can solve this problem.
【０００９】[0009]
【課題を解決するための手段】前記の課題を解決するた
めに、請求項１の検出装置では、２つを越えるピンを持
つコネクタ（ＣＮ１，ＣＮ２）を介して上位装置（０
１）に接続される下位装置（０２）が、このコネクタの
所定の２つのピン（Ｐ１，Ｐ２）間を結ぶ信号線（コネ
クタ脱落検出信号線１）と、この信号線に直列に挿入さ
れ自身の電源（電源電圧２）の存在時に導通する電圧検
出素子とを備え、上位装置は前記コネクタの所定の２つ
のピン間の導通の有無を検出する手段（検出回路９）を
備えたものとする。In order to solve the above-mentioned problems, in the detection device according to claim 1, the host device (0, 0) is connected via connectors (CN1, CN2) having more than two pins.
The lower device (02) connected to 1) is inserted in series with the signal line (connector disconnection detection signal line 1) connecting between the predetermined two pins (P1, P2) of this connector and the signal line itself. And a voltage detection element that conducts in the presence of a power source (power supply voltage 2), and the host device includes means (detection circuit 9) for detecting the presence or absence of conduction between two predetermined pins of the connector. .
【００１０】また、請求項２の検出装置では、請求項１
に記載の検出装置において、下位装置が前記電圧検出素
子を前記信号線に直列に挿入するか否かを切替えるスイ
ッチ（ＳＷ１）を備えたものとする。また、請求項３の
検出装置では、請求項１又は２に記載の装置において、
前記電圧検出素子をフォトカプラ（５）とする。According to a second aspect of the detection device of the present invention,
In the detection device described in (1), the lower device includes a switch (SW1) that switches whether to insert the voltage detection element in series with the signal line. Moreover, in the detection device of claim 3, in the device of claim 1 or 2,
The voltage detecting element is a photocoupler (5).
【００１１】[0011]
（実施例１）図１は本発明の第１の実施例としての構成
を示す回路図である。同図においては図３に対し、コネ
クタ脱落検出信号線１と直列に電圧検出素子としてのフ
ォトカプラ５のフォトトランジスタ５Ｔが直列に接続さ
れている。なお、９は上位装置０１のコネクタＣＮ１に
挿入されるコネクタピンＰ１に接続されるコネクタ脱落
と電源異常を検出する検出回路である。(Embodiment 1) FIG. 1 is a circuit diagram showing a configuration as a first embodiment of the present invention. 3, the phototransistor 5T of the photocoupler 5 as a voltage detection element is connected in series with the connector dropout detection signal line 1 in contrast to FIG. Reference numeral 9 is a detection circuit for detecting connector dropout and power failure connected to the connector pin P1 inserted into the connector CN1 of the host device 01.
【００１２】図１においてコネクタＣＮ１とＣＮ２が接
続され、且つ電源電圧２が存在すればフォトカプラ５の
フォトダイオード５Ｄに電流が流れフォトトランジスタ
５Ｔが導通する。従って検出回路９はコネクタピンＰ１
→コネクタ脱落検出信号線１→フォトトランジスタ５Ｔ
→コネクタピンＰ２の経路で接地電位８を検出すること
ができる。In FIG. 1, when the connectors CN1 and CN2 are connected and the power supply voltage 2 is present, a current flows through the photodiode 5D of the photocoupler 5 and the phototransistor 5T becomes conductive. Therefore, the detection circuit 9 is connected to the connector pin P1.
→ Connector drop detection signal line 1 → Phototransistor 5T
→ The ground potential 8 can be detected through the path of the connector pin P2.
【００１３】即ち検出回路９はコネクタピンＰ１を介し
この接地電位８を検出するか否かに応じて夫々、「コネ
クタ脱落が無く且つ電源電圧２が存在する」か「コネク
タ脱落が有るか又は電源電圧２が存在しない」かを判別
することができる。 （実施例２）図２は本発明の第２の実施例としての構成
を示す回路図である。同図においては図１に対し、フォ
トカプラ５のフォトトランジスタ５Ｔをコネクタ脱落検
出信号線１に直列に挿入するか否かを切替えるスイッチ
ＳＷ１が付加されている。That is, the detection circuit 9 detects "there is no connector drop and the power supply voltage 2 exists" or "there is a connector drop or power supply" depending on whether or not the ground potential 8 is detected via the connector pin P1. It is possible to determine whether “voltage 2 does not exist”. (Embodiment 2) FIG. 2 is a circuit diagram showing a configuration as a second embodiment of the present invention. In FIG. 1, a switch SW1 for switching whether to insert the phototransistor 5T of the photocoupler 5 in series into the connector drop detection signal line 1 is added to FIG.
【００１４】この図２ではスイッチＳＷ１をａ側に設定
したとき、コネクタ脱落検出信号線１にフォトトランジ
スタ５Ｔが直列に接続され、図１と同様に検出回路９は
「コネクタＣＮ１とＣＮ２が接続され、且つ下位装置０
２の電源電圧２が存在する」か否かを判別することがで
きる。またスイッチＳＷ１をｂ側に設定したとき、検出
回路９は図３のコネクタ異常検出回路６と同様に下位装
置０２の電源の有無にかかわらずコネクタＣＮ１とＣＮ
２が接続されていれば、検出回路９から接地電位８まで
の回路が閉回路を構成し、コネクタ脱落，半差しを検出
できる。In FIG. 2, when the switch SW1 is set to the side "a", the phototransistor 5T is connected in series to the connector drop detection signal line 1, and the detection circuit 9 "connects the connectors CN1 and CN2" as in FIG. , And lower device 0
It is possible to determine whether or not the power supply voltage 2 of 2 exists ”. Further, when the switch SW1 is set to the b side, the detection circuit 9 is similar to the connector abnormality detection circuit 6 of FIG.
If 2 is connected, the circuit from the detection circuit 9 to the ground potential 8 constitutes a closed circuit, and connector dropout and half insertion can be detected.
【００１５】[0015]
【発明の効果】請求項１に関わる発明によれば下位装置
が上位装置に接続されるコネクタの２つのピン間を結ぶ
コネクタ脱落検出信号線に直列に、下位装置の電源電圧
によって導通する電圧検出素子を直列に設けるようにし
たので、上位装置はこのコネクタの前記２つのピン間の
導通の有無を検出することにより、「コネクタの脱落が
なく且つ下位装置の電源が存在する」か否かを判別する
ことができ、従来の異常検出回路における 信頼性が低い、 配線接続本数が多い、 検出回路が複数必要である、 という問題点を解決し、装置のコスト低減と信頼性の向
上をはかることができる。According to the first aspect of the present invention, the voltage detection is conducted in series with the connector drop detection signal line connecting the two pins of the connector to which the lower device is connected to the upper device, in accordance with the power supply voltage of the lower device. Since the elements are provided in series, the upper device detects whether or not there is continuity between the two pins of this connector to determine whether "there is no disconnection of the connector and the power supply of the lower device exists". It is possible to make a determination, solve the problems of low reliability in the conventional abnormality detection circuit, the large number of wiring connections, and the need for multiple detection circuits to reduce the cost and improve the reliability of the device. You can
【００１６】また、装置によっては機能的，物理的にコ
ネクタ脱落有無の異常検出のみ行えばよい場合がある。
請求項２に関わる発明によれば前記のように電圧検出素
子をコネクタ脱落検出信号線に直列に挿入するか否かを
切替えるスイッチを付加するようにしたので、同一の装
置でコネクタ脱落の有無のみを検出する装置と「コネク
タ脱落なく且つ電源異常のないこと」の有無を検出する
装置を兼ねることができる。Further, depending on the apparatus, there is a case where only the abnormality detection of the presence or absence of the connector drop may be performed functionally and physically.
According to the invention of claim 2, since the switch for switching whether or not the voltage detection element is inserted in the connector dropout detection signal line in series is added as described above, only the presence or absence of the connector dropout in the same device It is also possible to serve both as a device for detecting the presence of a connector and a device for detecting the presence or absence of "no connector drop and no power supply abnormality".
【図１】本発明の第１の実施例としての構成を示す回路
図FIG. 1 is a circuit diagram showing a configuration as a first embodiment of the present invention;
【図２】本発明の第２の実施例としての構成を示す回路
図FIG. 2 is a circuit diagram showing a configuration as a second embodiment of the present invention.
【図３】従来の一般的な構成を示す回路図FIG. 3 is a circuit diagram showing a conventional general configuration.
０１ 上位装置 ０２ 下位装置 ＣＮ１ 上位装置側コネクタ ＣＮ２ 下位装置側コネクタ Ｐ１，Ｐ２ コネクタピン １ コネクタ脱落検出信号線 ２ 電源電圧 ３ 抵抗 ５ フォトカプラ（電圧検出素子） ５Ｄ フォトダイオード ５Ｔ フォトトランジスタ ８ 接地電位 ９ 検出回路 ＳＷ１ スイッチ 01 Upper device 02 Lower device CN1 Upper device side connector CN2 Lower device side connector P1, P2 Connector pin 1 Connector dropout detection signal line 2 Power supply voltage 3 Resistor 5 Photocoupler (voltage detection element) 5D Photodiode 5T Phototransistor 8 Ground potential 9 Detection circuit SW1 switch
Claims (3)
上位装置に接続される下位装置が、このコネクタの所定
の２つのピン間を結ぶ信号線と、この信号線に直列に挿
入され自身の電源の存在時に導通する電圧検出素子とを
備え、 上位装置は前記コネクタの所定の２つのピン間の導通の
有無を検出する手段を備えたことを特徴とするコネクタ
脱落と電源異常の検出装置。1. A lower device connected to a higher device via a connector having more than two pins, and a signal line connecting between two predetermined pins of this connector and a signal line inserted in series to this signal line. And a voltage detecting element that conducts when a power source is present, and the upper device has means for detecting the presence or absence of continuity between two predetermined pins of the connector. .
するか否かを切替えるスイッチを備えたことを特徴とす
るコネクタ脱落と電源異常の検出装置。2. The device according to claim 1, further comprising a switch that switches whether or not the lower device inserts the voltage detection element in series with the signal line. Detection device.
るコネクタ脱落と電源異常の検出装置。3. The device according to claim 1, wherein the voltage detection element is a photocoupler, and the connector is disconnected and the power supply is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25029595A JPH0989974A (en) | 1995-09-28 | 1995-09-28 | Detecting device of connector falling-off and power source abnormality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25029595A JPH0989974A (en) | 1995-09-28 | 1995-09-28 | Detecting device of connector falling-off and power source abnormality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0989974A true JPH0989974A (en) | 1997-04-04 |
Family
ID=17205787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25029595A Pending JPH0989974A (en) | 1995-09-28 | 1995-09-28 | Detecting device of connector falling-off and power source abnormality |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0989974A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011130632A (en) * | 2009-12-21 | 2011-06-30 | Hitachi Ltd | Digital protection control unit and method of monitoring soundness |
| CN103915732A (en) * | 2014-04-23 | 2014-07-09 | 首都师范大学 | Connector assembly capable of detecting connecting reliability in real time and detection method thereof |
| KR101888311B1 (en) * | 2017-08-22 | 2018-08-13 | 엘지전자 주식회사 | Diagnostic device and operating method thereof |
| CN111856335A (en) * | 2019-04-17 | 2020-10-30 | 鸿富锦精密工业(武汉)有限公司 | Abnormality detection circuit and electronic device having the same |
-
1995
- 1995-09-28 JP JP25029595A patent/JPH0989974A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011130632A (en) * | 2009-12-21 | 2011-06-30 | Hitachi Ltd | Digital protection control unit and method of monitoring soundness |
| CN103915732A (en) * | 2014-04-23 | 2014-07-09 | 首都师范大学 | Connector assembly capable of detecting connecting reliability in real time and detection method thereof |
| KR101888311B1 (en) * | 2017-08-22 | 2018-08-13 | 엘지전자 주식회사 | Diagnostic device and operating method thereof |
| CN111856335A (en) * | 2019-04-17 | 2020-10-30 | 鸿富锦精密工业(武汉)有限公司 | Abnormality detection circuit and electronic device having the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5672917A (en) | Semiconductor power switch system | |
| EP2817642B1 (en) | Method and apparatus to detect a broken wire condition in an integrated circuit | |
| US6633935B1 (en) | Automatic bus termination readjustment | |
| JP2000127848A (en) | Direction indicator provided in tractive vehicle for trailer and trailer connection deciding circuit used for it | |
| JPH0989974A (en) | Detecting device of connector falling-off and power source abnormality | |
| JP6579382B2 (en) | Disconnection detection circuit and electrical junction box | |
| JPH04114221A (en) | Abnormality detecting method for key switch input part in computer | |
| US7010703B1 (en) | Bus power-supply device and node | |
| JP2802760B2 (en) | Connector disconnection detection circuit | |
| JPH1050395A (en) | Device module connection system | |
| JPH05161263A (en) | Power supply connection detecting circuit | |
| JP4102615B2 (en) | Signal lamp disconnection detection circuit | |
| KR20010052224A (en) | Signaling output stage for generating digital voltage signals on a bus system | |
| JP4388027B2 (en) | Processor switching device and switching method thereof | |
| KR19990066996A (en) | Failure of electronic sensor | |
| JPS6319098A (en) | Line abnormality monitoring system | |
| JPH08202474A (en) | Connector connection detecting circuit | |
| JP2518400B2 (en) | Fault monitoring device for operating circuits | |
| JPH02246198A (en) | System for detecting unit mounted state | |
| JPH06350092A (en) | High-reliability integrated circuit structure for mos power device | |
| JPS58219626A (en) | Redundant output circuit | |
| JPS58142264A (en) | Coil disconnection detector | |
| JPH05341891A (en) | Terminator connection system | |
| JPS6366000B2 (en) | ||
| JP2000166032A (en) | Circuit for monitoring power supply alarm |