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
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (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 |
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