JPH0481293B2 - - Google Patents
Info
- Publication number
- JPH0481293B2 JPH0481293B2 JP59110013A JP11001384A JPH0481293B2 JP H0481293 B2 JPH0481293 B2 JP H0481293B2 JP 59110013 A JP59110013 A JP 59110013A JP 11001384 A JP11001384 A JP 11001384A JP H0481293 B2 JPH0481293 B2 JP H0481293B2
- Authority
- JP
- Japan
- Prior art keywords
- relay
- command
- open
- close
- closed
- 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 - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 238000012790 confirmation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
Landscapes
- Relay Circuits (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は一般家庭において使用する炊飯器など
の家電製品に用いられるリレーの駆動装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a relay drive device used in home appliances such as rice cookers used in general households.
従来例の構成とその問題点
従来のリレー駆動装置は第１図に示すように、
リレーコイル１と直列接続したトランジスタ２と
このトランジスタ２をオン・オフさせるマイクロ
コンピユータ３と直流電源４とから構成したもの
が一般的であつた。そしてトランジスタ２をオ
ン・オフすることによつてリレー接点５を開閉
し、ヒータ負荷６への通電量を制御する。７は商
用電源である。しかし、この構成では、トランジ
スタ２をオンさせて、リレーコイル１に電流を流
しても、リレー接点５が実際に閉じたのかどうか
分からず、小さなゴミ等がリレーに入つていると
それにひつかかつてアーマチアが動かなかつたり
して接点５が閉じない場合があるという問題があ
つた。Configuration of conventional example and its problems As shown in Figure 1, the conventional relay drive device
Generally, it consisted of a transistor 2 connected in series with a relay coil 1, a microcomputer 3 for turning on and off the transistor 2, and a DC power supply 4. By turning on and off the transistor 2, the relay contact 5 is opened and closed, and the amount of current applied to the heater load 6 is controlled. 7 is a commercial power supply. However, with this configuration, even if the transistor 2 is turned on and current is applied to the relay coil 1, it is not known whether the relay contact 5 has actually closed or not. There was a problem in that the armature did not move and sometimes the contact 5 did not close.
発明の目的
本発明はこのような従来の問題を解消し、信頼
性の高いリレー駆動装置を提供するものである。OBJECTS OF THE INVENTION The present invention solves these conventional problems and provides a highly reliable relay drive device.
発明の構成
本発明のリレー駆動装置は、負荷を開閉するリ
レーと、このリレーを駆動するリレー駆動手段
と、このリレー駆動手段に「閉」の指令を送る指
令手段と、前記リレーの接点の開閉状態を検出す
る開閉状態検出手段と、この開閉状態検出手段の
検出結果と前記指令手段の指令とを比較し、不一
致の場合は指令を停止してリレーを開放し、その
後再び以前の指令でリレーを駆動するように指令
を出させる確認判別手段とから構成され、「閉」
指令を出力した後、接点が実際に閉じたかどうか
を確認し、もし、閉じていなければ、一度、「開」
指令を出力し、その後再び「閉」指令を出力し、
リレー接点の「閉」動作を確実に行わせるもので
ある。Structure of the Invention The relay drive device of the present invention includes a relay that opens and closes a load, a relay drive means that drives the relay, a command means that sends a "close" command to the relay drive means, and a relay that opens and closes contacts of the relay. An open/close state detection means detects the state, and the detection result of this open/close state detection means is compared with the command of the command means, and if they do not match, the command is stopped and the relay is opened, and then the relay is opened again using the previous command. and confirmation determination means for issuing a command to drive the "closed"
After outputting the command, check whether the contact is actually closed, and if it is not closed, turn it "open" once.
Outputs the command, then outputs the "close" command again,
This ensures that the relay contact "closes".
実施例の説明
以下、添付図面に基づいて本発明の一実施例に
ついて説明する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.
第２図において、第１図と同一番号を付した部
分は同一構成部品である。リレーコイル１と接点
５とでリレー１２を構成し、トランジスタ２と抵
抗８によりリレー駆動手段１３を構成する。マイ
クロコンピユータ３は指令手段９と確認判別手段
１０を内蔵する。リレー接点５の開閉状態は開閉
状態検出手段１１によつて検出し、この信号は確
認判別手段１０に入力される。 In FIG. 2, parts given the same numbers as in FIG. 1 are the same components. The relay coil 1 and the contacts 5 constitute a relay 12, and the transistor 2 and the resistor 8 constitute a relay driving means 13. The microcomputer 3 incorporates a command means 9 and a confirmation/determination means 10. The open/close state of the relay contact 5 is detected by the open/close state detection means 11, and this signal is input to the confirmation/discrimination means 10.
上記構成において、第３図のフローチヤートに
基づき動作を説明する。第３図はリレーを閉成さ
せる場合を示している。まず、リレーを閉じるた
めに、マイクロコンピユタ３のＯポートに「閉」
信号、すなわち「Ｈ」レベルを指令手段９より出
力する。すると、トランジスタ２はオンになり、
リレーコイル１に電流が流れる。ここで、リレー
接点の動作時間より長い時間T1だけ待つて、リ
レー接点５の開閉状態をきく。所定の指令どおり
接点が閉じていると、そのまま次の処理に移行す
る。しかし、もし、T1時間後でも接点が閉じて
いないと、確認判別手段１０は指令手段９に信号
を送り、Ｏポートの「閉」信号を停止しT2時間
だけ待つ。つまり、Ｏポートに「Ｌ」レベルを出
力し、トランジスタ２をOFFにし、リレーコイ
ル１の電流をしや断する。その後再び、Ｏポート
に「Ｈ」レベルを出力してリレー接点を閉じさせ
るようにする。このような動作を最大３回まで行
い。この間に、リレー接点５が「閉」にならなけ
れば、リレーコイル１の電流をしや断したままで
動作を停止する。 In the above configuration, the operation will be explained based on the flowchart of FIG. FIG. 3 shows the case where the relay is closed. First, in order to close the relay, press "close" to the O port of the microcomputer 3.
A signal, that is, an "H" level is output from the command means 9. Then transistor 2 turns on,
Current flows through relay coil 1. Here, wait for a time T1 longer than the operating time of the relay contact, and then check the open/closed state of the relay contact 5. If the contact is closed as per the predetermined command, the process proceeds directly to the next process. However, if the contact is not closed even after T 1 hour, the confirmation/discrimination means 10 sends a signal to the command means 9, stops the "close" signal of the O port, and waits for T 2 hours. In other words, it outputs "L" level to the O port, turns off transistor 2, and cuts off the current in relay coil 1. After that, the "H" level is output to the O port again to close the relay contact. Do this motion up to 3 times. During this time, if the relay contact 5 does not become "closed", the current in the relay coil 1 remains cut off and the operation is stopped.
発明の効果
上記実施例からあきらかなように、本発明のリ
レー駆動装置は、リレーを開閉する場合、たとえ
ば「閉」信号を出力した後に、リレー接点の開閉
状態を確認し、もし閉じていなければ、一旦、
「開」信号を出力し、その後再び「閉」信号を出
力するので、リレーのアーマチヤアのひつかかり
や小さなゴミによつて、リレー接点が最初の信号
によつて閉じなくても、次の「開」→「閉」信号
の変化によつて、閉じる可能性が大きくなる。す
なわち、従来のリレー駆動方法に比べ、非常に信
頼度の高いものである。Effects of the Invention As is clear from the above embodiments, when the relay drive device of the present invention opens or closes the relay, for example, after outputting a "closed" signal, it checks the open/closed state of the relay contact, and if it is not closed, then , once,
Since it outputs an "open" signal and then outputs a "close" signal again, even if the relay contacts do not close due to the first signal due to the relay's armature getting stuck or small dirt, the next "open" signal will be output. ” → “Closed” The possibility of closing increases as the signal changes. In other words, it is much more reliable than conventional relay driving methods.
第１図は従来のリレー駆動装置を示す回路図、
第２図は本発明の一実施例を示すリレー駆動装置
の回路図、第３図はマイクロコンピユータの動作
を示すフローチヤートである。
９……指令手段、１０……確認判別手段、１１
……開閉状態検出手段、１２……リレー、１３…
…リレー駆動手段。
Figure 1 is a circuit diagram showing a conventional relay drive device.
FIG. 2 is a circuit diagram of a relay driving device showing one embodiment of the present invention, and FIG. 3 is a flow chart showing the operation of a microcomputer. 9...Commanding means, 10...Confirmation determining means, 11
...opening/closing state detection means, 12...relay, 13...
...Relay drive means.
Claims (1)
するリレー駆動手段と、このリレー駆動手段に
「閉」の指令を送る指令手段と、前記リレーの接
点の開閉状態を検出する開閉状態検出手段と、こ
の開閉状態検出手段の検出結果と前記指令手段の
指令とを比較し、不一致の場合は指令を停止して
リレーを開放し、その後再び以前の指令でリレー
を駆動するように指令を出させる確認判別手段と
よりなるリレー駆動装置。1. A relay that opens and closes a load, a relay drive means that drives this relay, a command means that sends a "close" command to this relay drive means, and an open/close state detection means that detects the open/close state of the contacts of the relay; Compare the detection result of this open/close state detection means with the command of the command means, and if they do not match, stop the command, open the relay, and then issue a command to drive the relay again with the previous command. A relay drive device consisting of a determining means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59110013A JPS60254530A (en) | 1984-05-30 | 1984-05-30 | Relay drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59110013A JPS60254530A (en) | 1984-05-30 | 1984-05-30 | Relay drive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60254530A JPS60254530A (en) | 1985-12-16 |
| JPH0481293B2 true JPH0481293B2 (en) | 1992-12-22 |
Family
ID=14524902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59110013A Granted JPS60254530A (en) | 1984-05-30 | 1984-05-30 | Relay drive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60254530A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003139810A (en) | 2001-10-31 | 2003-05-14 | Toyoda Mach Works Ltd | Relay failure detecting apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59194324A (en) * | 1983-04-19 | 1984-11-05 | 松下電器産業株式会社 | Method of controlling relay |
-
1984
- 1984-05-30 JP JP59110013A patent/JPS60254530A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60254530A (en) | 1985-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |