JPH0228621Y2

JPH0228621Y2 -

Info

Publication number: JPH0228621Y2
Application number: JP18826584U
Authority: JP
Priority date: 1984-12-11
Filing date: 1984-12-11
Publication date: 1990-07-31
Also published as: JPS61101981U

Description

【考案の詳細な説明】産業上の利用分野本考案は、微小電流の流れる電気装置間を接続
するコネクタの接触不良を防止した接触不良防止
装置の改良に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement in a contact failure prevention device that prevents contact failure in connectors that connect electrical devices through which minute currents flow.

従来の技術従来、微小電流の流れる電気装置を接続するコ
ネクタには、常に微小電流しか流れず経年変化等
により接触不良を発生しやすかつた。BACKGROUND ART Conventionally, in connectors for connecting electrical devices through which a minute current flows, only a minute current always flows, and contact failures tend to occur due to aging and other factors.

例えば、近年、車両に配置されてきた現在位置
検出装置にあつては、方位センサで地磁気等によ
り車両の進行方向を検出し、微小電流で且つ電圧
変化によるアナログ信号としてのその検出信号
を、Ａ−Ｄ変換器でデイジタル信号に変換後、処
理部において所定の処理をするものであり、該方
位センサと該Ａ−Ｄ変換器間をコネクタで接続し
ている。一般に、コネクタの接触不良を防止し、
接触の信頼性を向上させるには、該コネクタへ約
1mA程度以上の電流を流すことが望ましい。し
かし、方位センサは通常オペアンプから上記のよ
うなアナログ信号を出力するが、そのオペアンプ
の出力を約1mAの電流の電圧変化信号とすると、
出力信号が電圧変化によるものであるにもかかわ
らず、該出力信号の電圧降下が約100mVも生ず
る結果となり、出力誤差が大きく使用不能とな
る。従つて、方位センサの出力信号は約10μA程
度以下の電流をベースとした電圧変化信号とし、
Ａ−Ｄ変換器をCMOSロジツクで構成して、デ
イジタル変換することが通常行なわれていた。 For example, in recent years, current position detection devices that have been installed in vehicles use a direction sensor to detect the direction of travel of the vehicle using geomagnetism, etc., and output the detection signal as an analog signal using a minute current and a voltage change. -After being converted into a digital signal by a D converter, predetermined processing is performed in a processing section, and the direction sensor and the A-D converter are connected by a connector. In general, it prevents poor contact of connectors,
To improve contact reliability, approximately
It is desirable to flow a current of about 1mA or more. However, a direction sensor normally outputs an analog signal like the one above from an operational amplifier, but if the output of that operational amplifier is a voltage change signal with a current of about 1 mA,
Even though the output signal is caused by a voltage change, the voltage drop of the output signal is about 100 mV, resulting in a large output error and rendering the device unusable. Therefore, the output signal of the direction sensor is a voltage change signal based on a current of about 10 μA or less,
It has been common practice to construct an A-D converter using CMOS logic and perform digital conversion.

本考案が解決しようとする問題点従来、微小電流だけが流れるコネクタの接触不
良防止対策として、コネクタ自体に金メツキを施
すものがあつたが、高価格を招来すると共に経時
変化等により接触不良を発生し得る。また、信号
を出力する信号出力部の出力側に、ボルテージフ
オロアを追加して出力バツフアを構成することに
より、やや高電流を流すものがあるが、高価格で
且つ上記信号により作動する処理部との信号入出
力の互換性に問題がある。Problems that the present invention aims to solve Conventionally, as a measure to prevent poor contact in connectors that allow only minute currents to flow, there were gold-plated connectors themselves, but this resulted in high costs and caused poor contact due to changes over time. It can occur. In addition, there are some devices that allow a somewhat high current to flow by adding a voltage follower to the output side of the signal output section that outputs the signal to configure an output buffer, but these are expensive and are processing sections that are activated by the above signals. There is a problem with signal input/output compatibility with.

更にまた、信号出力部と処理部間のコネクタで
接続された通電回線から分岐し、分割抵抗を介し
てアースすることにより、常に分割電流を流すも
のがあるが、一般に抵抗には抵抗値の不揃いがあ
るので抵抗値調整の必要があると共に、該信号出
力部の出力信号である電圧が変動するので、他と
の互換性に問題がある。 Furthermore, there are devices that always allow a divided current to flow by branching from the current-carrying line connected by the connector between the signal output section and the processing section and grounding it through a dividing resistor, but generally the resistors have uneven resistance values. Therefore, it is necessary to adjust the resistance value, and since the voltage that is the output signal of the signal output section fluctuates, there is a problem in compatibility with other devices.

問題点を解決するための手段本考案は、上記問題点に鑑み考案したものであ
り、コネクタの接触不良防止装置を、微小電流の
出力信号を導出する信号出力部１と、該出力信号
に基づき所定の処理をすると共に自己の処理に対
し該出力信号の入力を必要としない時間帯だけ遮
断信号を出力する処理部２と、該信号出力部１か
らの該出力信号を該処理部２へ伝送すべく双方間
の通電回線５ａ，５ｂ，５ｃ，と６ａ，６ｂ，６
ｃどおしを接続するコネクタ７ａ，７ｂ，７ｃ
と、該遮断信号に基づき該コネクタ７ａ，７ｂ，
７ｃの接触不良を防止する程度の高電流を該コネ
クタ７ａ，７ｂ，７ｃへ流す接触不良防止部８と
を備えて構成する。Means for Solving the Problems The present invention has been devised in view of the above-mentioned problems, and includes a connector contact failure prevention device including a signal output section 1 that derives an output signal of a minute current, and a signal output section 1 that derives an output signal of a minute current. A processing section 2 that performs predetermined processing and outputs a cutoff signal only during a time period when the input of the output signal is not required for its own processing, and transmits the output signal from the signal output section 1 to the processing section 2. The power lines 5a, 5b, 5c, and 6a, 6b, 6 between the two sides should preferably be connected.
Connectors 7a, 7b, 7c for connecting C
Based on the cutoff signal, the connectors 7a, 7b,
The contact failure prevention section 8 is configured to flow a high current to the connectors 7a, 7b, and 7c to the extent that the contact failure of the connectors 7c is prevented.

実施例一実施例として、車両の現在位置検出装置に適
用した例を図面に基づき説明する。Embodiment As an embodiment, an example in which the present invention is applied to a current position detection device of a vehicle will be explained based on the drawings.

１は信号出力部としての方位センサ、２は処理
部、３はＡ−Ｄ変換器、４は該Ａ−Ｄ変換器３の
出力信号に基づき車両の現在位置を演算し表示、
制御等を実行する制御部である。方位センサ１は
車両の進行方向を検出し、微小電流をベースとし
電圧変化によるアナログ信号であるその検出信号
即ち、Ｘ軸、Ｙ軸、中立点の座標データを出力す
る。Ａ−Ｄ変換器３は上記検出信号をデイジタル
変換して出力する。方位センサ１の出力端子Ｘ，
Ｙ，ＮとＡ−Ｄ変換器２の入力端子とは、上記検
出信号を該Ａ−Ｄ変換器２へ伝送すべく、双方間
の第１通電回線５ａ，５ｂ，５ｃと第２通電回線
６ａ，６ｂ，６ｃどおしをコネクタ７ａ，７ｂ，
７ｃで接続している。 1 is a direction sensor as a signal output section; 2 is a processing section; 3 is an A-D converter; 4 is a computer that calculates and displays the current position of the vehicle based on the output signal of the A-D converter 3;
This is a control unit that executes control and the like. The direction sensor 1 detects the direction in which the vehicle is traveling and outputs a detection signal, which is an analog signal based on a minute current and based on voltage changes, ie, coordinate data of the X axis, Y axis, and neutral point. The AD converter 3 digitally converts the detection signal and outputs it. Output terminal X of direction sensor 1,
Y, N and the input terminal of the A-D converter 2 are connected to first energizing lines 5a, 5b, 5c and a second energizing line 6a between them in order to transmit the detection signal to the A-D converter 2. , 6b, 6c are connected to connectors 7a, 7b,
Connected with 7c.

制御部４は例えばマイクロコンピユータで構成
し、所定周期毎に方位センサ１の端子Ｘ，Ｙ，Ｎ
からそれぞれ出力される各検出信号の入力を選択
すべく、選択信号を端子X₀，Y₀，N₀からＡ−Ｄ
変換器３へ出力する。例えば、制御部４が自己の
処理にＸ軸の座標データを必要とする時点におい
ては、端子X₀から選択信号を出力し、Ａ−Ｄ変
換器３から、方位センサ１の端子Ｘからの検出信
号をデイジタル変換して８ビツトのパラレル信号
で出力させ、そのパラレル信号を端子Ｑから入力
し、所定の処理を実行する。また、制御部４は自
己の処理に対し方位センサ１からの検出信号の入
力を必要としない時間帯だけ、端子B₀，B₁，B₂
からの遮断信号を出力する。 The control unit 4 is composed of, for example, a microcomputer, and controls terminals X, Y, N of the orientation sensor 1 at predetermined intervals.
In order to select _the input of each _detection signal output _from
Output to converter 3. For example, when the control unit 4 needs X-axis coordinate data for its own processing, it outputs a selection signal from the _terminal The signal is digitally converted and output as an 8-bit parallel signal, and the parallel signal is inputted from terminal Q and predetermined processing is executed. In addition, the control unit 4 connects the terminals B ₀ , B ₁ , and B ₂ only during the time period when it does not require input of the detection signal from the direction sensor 1 for its own processing.
Outputs a cutoff signal from

８は接触不良防止部であり、上記遮断信号に基
づきコネクタ７ａ，７ｂ，７ｃの接触不良を防止
する程度の高電流を該コネクタ７ａ，７ｂ，７ｃ
へ流すものである。接触不良防止部８は、方位セ
ンサ１からコネクタ７ａ，７ｂ，７ｃを介して上
記高電流を流すべく、第２通電回線６ａ，６ｂ，
６ｃと接続している。また、接触不良防止部８は
コネクタ７ａ，７ｂ，７ｃと同数量の分岐通電部
８ａ，８ｂ，８ｃで構成し、個別に各第２通電回
線６ａ，６ｂ，６ｃと接続している。各分岐通電
部８ａ，８ｂ，８ｃはNPN形のトランジスタＴ
と２つの抵抗R₁，R₂で構成し、該トランジスタ
Ｔのエミツタをアースしている。 Reference numeral 8 denotes a poor contact prevention section, which applies a high current to the extent that prevents poor contact of the connectors 7a, 7b, 7c based on the cutoff signal.
It is something that flows to The poor contact prevention unit 8 connects the second current-carrying lines 6a, 6b, 6b, and 7c in order to cause the high current to flow from the orientation sensor 1 through the connectors 7a, 7b, and 7c.
Connected to 6c. Furthermore, the poor contact prevention section 8 includes branch energizing sections 8a, 8b, and 8c in the same number as the connectors 7a, 7b, and 7c, and is individually connected to each of the second energizing lines 6a, 6b, and 6c. Each branch current-carrying part 8a, 8b, 8c is an NPN type transistor T.
and two resistors R ₁ and R ₂ , and the emitter of the transistor T is grounded.

次に、上記構成の作動を説明する。 Next, the operation of the above configuration will be explained.

方位センサ１は常に各出力端子Ｘ，Ｙ，Ｎから
検出信号を出力している。制御部４は検出信号を
Ａ−Ｄ変換器３でデイジタル変換後に入力し、所
定の処理を実行する。また、制御部４は自己の処
理に対し、方位センサ１からの検出信号の入力を
必要としない時間帯だけ、例えば、時分割処理を
して周期を60ｍsecとし、最初の30ｍsecはＡ−Ｄ
変換器３を作動させ、次の30ｍsecだけ端子B₀，
B₁，B₂から遮断信号として高レベル信号を出力
する。接触不良防止部８の各分岐通電部８ａ，８
ｂ，８ｃにおいて、各トランジスタＴは遮断信号
によりON作動し、第２通電回線６ａ，６ｂ，６
ｃの電位をほぼアース電位に低下させる。而し
て、方位センサ１は各出力端子Ｘ，Ｙ，Ｎの出力
電位が低下することによつて、通常の約10μA程
度以下の微小電流より大電流、即ちコネクタ７
ａ，７ｂ，７ｃの接触を良好に保持するのに必要
である約1mA程度以上の電流を出力する。従つ
て、コネクタ７ａ，７ｂ，７ｃは所定周期で大電
流が流れることにより、常に接触を良好に保持さ
れる。 The orientation sensor 1 always outputs detection signals from each output terminal X, Y, and N. The control unit 4 inputs the detection signal after digital conversion by the AD converter 3, and executes predetermined processing. In addition, the control unit 4 performs time-division processing for its own processing only during times when the input of the detection signal from the direction sensor 1 is not required, and sets the cycle to 60 msec, and the first 30 msec is A-D.
Activate converter 3 and connect terminal B ₀ for the next 30 msec.
A high level signal is output from B ₁ and B ₂ as a cutoff signal. Each branch current-carrying part 8a, 8 of the poor contact prevention part 8
In b, 8c, each transistor T is turned ON by a cutoff signal, and the second energizing line 6a, 6b, 6
The potential of c is lowered to approximately ground potential. As a result, the direction sensor 1 receives a larger current than the normal micro current of approximately 10 μA or less, as the output potential of each output terminal X, Y, and N decreases, that is, the connector 7
It outputs a current of approximately 1 mA or more, which is necessary to maintain good contact between a, 7b, and 7c. Therefore, a large current flows through the connectors 7a, 7b, and 7c at predetermined intervals, so that good contact is always maintained.

尚、上記実施例において、制御部４は各端子
B₀，B₁，B₂のうち選択信号を出力していない端
子に相当するコネクタ７ａ，７ｂ，７ｃだけに上
記大電流を流すべく、各端子B₀，B₁，B₂から個
別にタイミングをずらして、遮断信号を出力する
ものでもよい。また、接触不良防止部８はトラン
ジスタ以外の構成でもよい。 In the above embodiment, the control section 4 controls each terminal.
In order to flow the above-mentioned large current only to the connectors 7a, _7b , and 7c corresponding to the terminals that do not output selection signals among B 0 , B 1 _, and B ₂ , the timing is set individually from each terminal B ₀ , B ₁ , and B ₂ . It may also be possible to output a cutoff signal by shifting the cutoff signal. Furthermore, the poor contact prevention section 8 may have a configuration other than a transistor.

更に、本考案は上記実施例に限定されるもので
はなく、例えば信号出力部と処理部間の通電回線
が１本のものにも適用である。 Furthermore, the present invention is not limited to the above-mentioned embodiments, but can also be applied to, for example, a system in which there is only one current-carrying line between the signal output section and the processing section.

本考案の効果処理部が自己の処理に対し信号出力部からの出
力信号の入力を必要としない時間帯だけ遮断信号
を出力し、それに基づきコネクタの接触不良を防
止する程度の高電流を該コネクタへ流すので、常
に該コネクタの接触状態が良好であると共に、該
信号出力部からの該出力信号の伝送に悪影響がな
い。また、信号出力部と処理部に互換性があると
共に、高価格のコネクタを使用する必要がない。Effects of the present invention The processing section outputs a cutoff signal only during the time period when it does not require the input of an output signal from the signal output section for its own processing, and based on the cutoff signal, it applies a high current to the connector to prevent contact failure of the connector. Therefore, the contact state of the connector is always good, and there is no adverse effect on the transmission of the output signal from the signal output section. Furthermore, the signal output section and processing section are compatible, and there is no need to use expensive connectors.

[Brief explanation of drawings]

図面は本考案に係るコネクタの接触不良防止装
置の電気回路図である。１……信号出力部、２……処理部、５ａ，５
ｂ，５ｃ，６ａ，６ｂ，６ｃ……通電回線、８…
…接触不良防止部。 The drawing is an electrical circuit diagram of a connector failure prevention device according to the present invention. 1...Signal output section, 2...Processing section, 5a, 5
b, 5c, 6a, 6b, 6c... energized line, 8...
...Poor contact prevention section.

Claims

[Scope of utility model registration request]

a signal output section that derives a minute current output signal;
a processing unit that performs predetermined processing based on the output signal and outputs a cutoff signal only during a time period when the input of the output signal is not required for its own processing; A connector that connects the current-carrying lines between the two sides for transmission to the connector, and a poor contact prevention section that flows a high enough current to the connector to prevent poor contact of the connector based on the cutoff signal. Features a connector failure prevention device.