JPS5952580B2 - electronic switch - Google Patents
electronic switchInfo
- Publication number
- JPS5952580B2 JPS5952580B2 JP3642680A JP3642680A JPS5952580B2 JP S5952580 B2 JPS5952580 B2 JP S5952580B2 JP 3642680 A JP3642680 A JP 3642680A JP 3642680 A JP3642680 A JP 3642680A JP S5952580 B2 JPS5952580 B2 JP S5952580B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- terminal
- power supply
- photocoupler
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
Landscapes
- Electronic Switches (AREA)
Description
【発明の詳細な説明】
この発明は高周波発振型の近接スイッチや充電スイッチ
などの電子スイッチに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to electronic switches such as high frequency oscillation type proximity switches and charging switches.
電子スイッチは機械的スイッチと同じように、その用途
によってノーマルオープン、ノーマルクローズの２つの
動作モードが使い分けられている。Like mechanical switches, electronic switches have two operating modes: normally open and normally closed, depending on their purpose.
従来電子スイッチに於いてはノーマルオープン、ノーマ
ルクローズの動作モード毎に別々の製品として作られて
いたが、メーカー及びユーザーの何れの側にとっても生
産及び在庫等の管理上に問題があった。Conventionally, electronic switches have been manufactured as separate products for normally open and normally closed operating modes, but this poses problems in production and inventory management for both manufacturers and users.
このため、一種類の電子スイッチで２つの動作モードが
ユーザー側で簡単に切り換えられるようにしたものが作
られるようになっている。For this reason, devices are being manufactured that allow the user to easily switch between two operating modes using a single type of electronic switch.
ところで電子スイッチは、一般に内部回路のコスト比率
が高く、又可能な限り小型化が要求されているので、２
つの動作モードに対応する出力回路を２つ設けそれぞれ
に端子を接続して、これらの端子を選択するという構成
をとることは避ける必要がある。By the way, electronic switches generally have a high internal circuit cost ratio and are required to be as compact as possible.
It is necessary to avoid a configuration in which two output circuits corresponding to one operation mode are provided, terminals are connected to each, and these terminals are selected.
そこで従来は内部回路の一部に手動スイッチやショート
バー（短絡片）を設け、これをケースの外部から切換操
作したり、あるいは切断出来るように構成し、内部回路
の動作モードを切り換えるようにしている。Therefore, in the past, a manual switch or a shorting bar (shorting piece) was provided in a part of the internal circuit, and this was configured so that it could be switched or disconnected from the outside of the case, and the operating mode of the internal circuit could be changed. There is.
しかしながら前者では手動スイッチ自身が接触信頼性に
欠けること、不注意で誤って操作されてしまうおそれが
あることなどの問題があり、また後者ではショートバー
を一旦切断してしまうとその復元に半田付けなどの作業
を要し簡易でないこと、切断端部が露出し電源ラインな
どに接触して内部回路が破壊されてしまうおそれがある
ことなどの問題があり、また両者に共通に手動スイッチ
やショートバーの取付個所の選択が困難なことなどの欠
点がある。However, with the former, there are problems such as the manual switch itself lacking in contact reliability and the risk of being operated incorrectly due to carelessness, and with the latter, once the short bar is cut, it requires soldering to restore it. There are problems such as the cut end is exposed and comes in contact with the power line etc., which may damage the internal circuit. There are disadvantages such as difficulty in selecting the mounting location.
本発明は上記に鑑み、各動作モード毎に電源端子を設け
てその電源端子に電源を接続すれは１動的にその動作モ
ードが選択されるように構成した、極めて使い勝手の良
い電子スイッチを提供することを目的とする。In view of the above, the present invention provides an extremely user-friendly electronic switch that is configured such that a power terminal is provided for each operating mode, and the operating mode is dynamically selected when a power source is connected to the power terminal. The purpose is to
以下、本発明の一実施例について図面を参照しながら説
明する。An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明をＤＣ３線式の高周波発振型近接スイッ
チに適用したものである。FIG. 1 shows the present invention applied to a DC three-wire high frequency oscillation type proximity switch.
この図に於いて、近接スイッチ１０は、近接センサ回路
（発振回路とこの発振振巾に応じて出力を生じるスイッ
チング回路を含んで゛いる）１と出力回路２と４個の端
子Ａ−Ｄとを有している。In this figure, a proximity switch 10 includes a proximity sensor circuit 1 (including an oscillation circuit and a switching circuit that generates an output according to the oscillation width) 1, an output circuit 2, and four terminals A-D. have.
近接センサ回路１と出力回路２に電源を供給するための
正の電源ライン５と端子Ａ、 Ｂとの間にそれぞれフ
ットカプラの入力部（発光ダイオード側）３Ｐ、４Ｐが
接続されている。Input parts (light emitting diode side) 3P and 4P of the foot coupler are connected between terminals A and B and a positive power supply line 5 for supplying power to the proximity sensor circuit 1 and output circuit 2, respectively.
近接センサ回路１は出力端子１Ｃを有し、出力回路２の
２個の入力端子２ａ、２ｂとの間にフォトカプララの出
力部（フォトトランジスタ側）３ｓ、４ｓがそれぞれ接
続されている。The proximity sensor circuit 1 has an output terminal 1C, and output parts (phototransistor side) 3s and 4s of a photocoupler are connected between two input terminals 2a and 2b of the output circuit 2, respectively.
出力回路２はこの図で゛はＮＰＮ）ランジスタを開閉素
子として用いてあり、入力端子２ａ、２ｂはそれぞれノ
ーマルオーブン用及び゛ノーマルクローズ用であって定
常状態（非検出時）でこの開閉素子を開及び閉にするた
めの入力端子である。In this figure, the output circuit 2 uses an NPN transistor as a switching element, and the input terminals 2a and 2b are for normal oven and normal close, respectively, and this switching element is used in a steady state (when not detected). This is an input terminal for opening and closing.
端子Ｃと端子Ａ、 Ｂの何れかの間に直流電源８１を
接続し、直流電源８１の正側と端子りとの間に負荷７を
接続する。A DC power supply 81 is connected between terminal C and either terminal A or B, and a load 7 is connected between the positive side of DC power supply 81 and the terminal.
第１図では端子Ａに接続された場合が示されており、こ
の場合フ第１へカプラの入力部３Ｐを経て電流が流れる
ためフォトカプラの出力部３Ｓの方がオンとなり、ノー
マルオープンの動作モードとなる。Figure 1 shows the case where it is connected to terminal A. In this case, current flows to F1 through the input section 3P of the coupler, so the output section 3S of the photocoupler is turned on, resulting in normally open operation. mode.
また端子Ｂに直流電源８１を接続すると端子１Ｃの出力
が端子２ｂに送られるためノーマルクローズの動作モー
ドとなる。Furthermore, when the DC power supply 81 is connected to the terminal B, the output of the terminal 1C is sent to the terminal 2b, so that the normally closed operation mode is established.
第２図では近接センサ回路１から２つの出力端子１ａ、
ｌｂを介して逆極性の出力が生じるようにされており、
出力回路２は一個の入力端子２Ｃを有している。In FIG. 2, two output terminals 1a from the proximity sensor circuit 1,
An output of opposite polarity is generated through lb,
The output circuit 2 has one input terminal 2C.
この場合、近接センサ回路１は通常時に端子１ａから“
ＬＳＩ、検出時に°“Ｈ“の出力信号を生じ、端子１ｂ
ではその逆となる。In this case, the proximity sensor circuit 1 normally connects the terminal 1a to “
LSI generates an output signal of "H" at the time of detection, and terminal 1b
Now the opposite is true.
従ってこの何れかを入力端子２Ｃに送るようフオＩ・カ
プララの出力部３ｓ、４ｓの何れかをオンとすれば、ノ
ーマルオープン又はノーマルクローズの動作モードが選
択出来る。Therefore, by turning on either the output section 3s or 4s of the photo coupler so as to send one of them to the input terminal 2C, the normally open or normally closed operation mode can be selected.
他の構成は第１図と同様である。The other configurations are the same as in FIG. 1.
第３図はＡＣ２線式近接スイッチに適用したものである
。FIG. 3 shows an example applied to an AC two-wire proximity switch.
この図に示すように、近接スイッチ２０は３個の端子Ａ
−Ｃを有しており、端子Ａ、 Ｂの一方と端子Ｃとの間
に負荷７と交流電源８２とを接続する。As shown in this figure, the proximity switch 20 has three terminals A
-C, and the load 7 and the AC power supply 82 are connected between one of the terminals A and B and the terminal C.
端子Ａ、 Ｂにはフォトカプラの入力部３Ｐ、４Ｐがそ
れぞれ接続され、ダイオードブリッジ１６を介して出力
回路２の開閉素子であるＳＣＲに接続されている。Input parts 3P and 4P of a photocoupler are connected to the terminals A and B, respectively, and are connected to the SCR, which is a switching element of the output circuit 2, via a diode bridge 16.
更に近接センサ回路１及び出力回路２には定電圧回路１
５をへて電力が供給される。Further, a constant voltage circuit 1 is connected to the proximity sensor circuit 1 and the output circuit 2.
Power is supplied through 5.
この第３図に示すように端子Ａに接続されている場合、
フォトカプラの入力部３Ｐをへて電流が流れるので、フ
ォトカプラの出力部３Ｓがオンになり、出力回路２はノ
ーマルオープンンの動作モードで動作する。When connected to terminal A as shown in Fig. 3,
Since a current flows through the input section 3P of the photocoupler, the output section 3S of the photocoupler is turned on, and the output circuit 2 operates in a normally open operation mode.
端子Ｂに接続した場合には、フォトカプララの出力部４
Ｓがオンになり、ノーマルクローズの動作モードとなる
。When connected to terminal B, output section 4 of the photocoupler
S turns on and enters the normally closed operating mode.
ここでフ第１・カプラの入力部３Ｐ、４Ｐにおいて２個
の発光ダイオードが逆方向にそれぞれ接続されているが
、これは交流電流の両方向で点灯されるようにするため
である。Here, two light emitting diodes are connected in opposite directions at the input parts 3P and 4P of the first coupler, but this is so that they can be lit in both directions of alternating current.
また抵抗１７，１８が直列に接続され、更にツェナダイ
オード１１，１２：１３．１４が並列に接続されている
のはこれらのフォトカブララの入力部３Ｐ、４Ｐに過大
電流が流れないようにするためで゛ある。Also, the resistors 17 and 18 are connected in series, and the Zener diodes 11 and 12:13.14 are connected in parallel to prevent excessive current from flowing into the input parts 3P and 4P of these photocouplers. There is.
すなわち、出力回路２の開閉素子がオンになるとこの開
閉素子を通じて負荷電流が流れ、また定電圧回路１５を
通じて電源電流が流れるため、端子Ａ、 Ｈには過大電
流が流れるからである。That is, when the switching element of the output circuit 2 is turned on, a load current flows through the switching element, and a power supply current flows through the constant voltage circuit 15, so that an excessive current flows through the terminals A and H.
なお、開閉素子がオフの場合には定電圧回路１５を通じ
て微少な電流が流れるのみであるが、この微少な電流が
フォトカプラの入力部３Ｐ、４Ｐを流れる。Note that when the switching element is off, only a small current flows through the constant voltage circuit 15, but this small current flows through the input sections 3P and 4P of the photocoupler.
従って開閉素子がオンまたはオフのいずれであってもフ
ォトカプラの入力部３Ｐ、４Ｐの発光ダイオードは交流
の両方向で確実に発光し、所定の動作モードが確保され
る。Therefore, regardless of whether the switching element is on or off, the light emitting diodes of the photocoupler input sections 3P and 4P reliably emit light in both alternating current directions, ensuring a predetermined operating mode.
なお、近接センサ回路１と出力回路２との間で゛の信号
伝達の切換を行う回路は、フォトカプラの出力部のフォ
トトランジスタを利用して他の構成とすることもできる
。Note that the circuit for switching the signal transmission between the proximity sensor circuit 1 and the output circuit 2 may have another configuration using a phototransistor at the output section of the photocoupler.
また、ＤＣ３線式とＡＣ２線式の近接スイッチに適用し
た例について説明したが、他のＤＣ２線式あるいはＡＣ
３線式にも適用でき、また高周波発振型の近接スイッチ
以外の例えば充電スイッチ等にも適用できることは勿論
である。In addition, although we have explained examples in which it is applied to DC 3-wire type and AC 2-wire type proximity switches, other DC 2-wire type or AC 2-wire type proximity switches have been described.
It goes without saying that the present invention can be applied to a three-wire system, and can also be applied to, for example, a charging switch other than a high frequency oscillation type proximity switch.
以上実施例について説明したように、本発明によれば動
作モードに応じた電源端子を設けており、この電源端子
を選択するだけで希望の動作モードを得ることかで゛き
る。As described above with respect to the embodiments, according to the present invention, power supply terminals are provided depending on the operation mode, and the desired operation mode can be obtained simply by selecting this power supply terminal.
また、出力回路は１個で足り、動作モード毎に出力回路
を重複的に設けることをしていないので、回路電流の不
要な増加が抑えられている。Further, since only one output circuit is required and no redundant output circuits are provided for each operation mode, unnecessary increases in circuit current are suppressed.
【図面の簡単な説明】
第１図、第２図及び第３図は本発明の各実施例をそれぞ
れ示す回路図である。
１・・・・・・近接センサ回路、２・・・・・・出力回
路、３Ｐ、４Ｐ・・・・・・フォトカプラの入力部、３
ｓ、４ｓ・・・・・・フォトカプララの出力部、５・・
・・・・電源ライン、７・・・・・・負荷、８１・・・
・・・直流電源、８２・・・・・・交流電源、１５・・
・・・・定電圧回路、１６・・・・・・ダイオードブリ
ッジ、１０・・・・・・ＤＣ３線式近接スイッチ、２０
・・・・・・ＡＣ２線式近接スイッチ。BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1, 2, and 3 are circuit diagrams showing each embodiment of the present invention. 1... Proximity sensor circuit, 2... Output circuit, 3P, 4P... Photocoupler input section, 3
s, 4s... Output section of photocoupler, 5...
...Power line, 7...Load, 81...
...DC power supply, 82...AC power supply, 15...
... Constant voltage circuit, 16 ... Diode bridge, 10 ... DC 3-wire proximity switch, 20
...AC 2-wire proximity switch.
Claims (1)
路の検出動作に応じて前記出力回路をスイッチングさせ
る電子スイッチに於いて、前記電源端子を動作モード毎
に設け、これら電源端子のそれぞれにフォトカプラの入
力部を接続してこの入力部を通して前記検出回路及び出
力回路に電流を供給するようにし、前記フォトカプラの
出力部を前記検出回路と前記出力回路との間に接続して
前記両回路間の信号伝達の切換を行うようにしたことを
特徴とする電子スイッチ。1. In an electronic switch that has a detection circuit, an output circuit, and a power supply terminal and switches the output circuit according to the detection operation of the detection circuit, the power supply terminal is provided for each operation mode, and each of these power supply terminals has a The input part of the photocoupler is connected to supply current to the detection circuit and the output circuit through this input part, and the output part of the photocoupler is connected between the detection circuit and the output circuit to supply current to the detection circuit and the output circuit through the input part. An electronic switch characterized by switching signal transmission between circuits.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3642680A JPS5952580B2 (en) | 1980-03-21 | 1980-03-21 | electronic switch |
| US06/240,939 US4414478A (en) | 1980-03-03 | 1981-03-05 | Electronic switching device |
| DE3111125A DE3111125C2 (en) | 1980-03-21 | 1981-03-20 | Electronic switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3642680A JPS5952580B2 (en) | 1980-03-21 | 1980-03-21 | electronic switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56132820A JPS56132820A (en) | 1981-10-17 |
| JPS5952580B2 true JPS5952580B2 (en) | 1984-12-20 |
Family
ID=12469488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3642680A Expired JPS5952580B2 (en) | 1980-03-03 | 1980-03-21 | electronic switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5952580B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0329909Y2 (en) * | 1985-03-16 | 1991-06-25 | ||
| CN102412814A (en) * | 2010-09-26 | 2012-04-11 | 上海杰得微电子有限公司 | Forced shutdown circuit of portable consumer electronic product |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5864140U (en) * | 1981-10-23 | 1983-04-30 | 光洋電子工業株式会社 | Detection switch output circuit |
-
1980
- 1980-03-21 JP JP3642680A patent/JPS5952580B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0329909Y2 (en) * | 1985-03-16 | 1991-06-25 | ||
| CN102412814A (en) * | 2010-09-26 | 2012-04-11 | 上海杰得微电子有限公司 | Forced shutdown circuit of portable consumer electronic product |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56132820A (en) | 1981-10-17 |
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