JPH0628001B2 - Control circuit - Google Patents
Control circuitInfo
- Publication number
- JPH0628001B2 JPH0628001B2 JP59025429A JP2542984A JPH0628001B2 JP H0628001 B2 JPH0628001 B2 JP H0628001B2 JP 59025429 A JP59025429 A JP 59025429A JP 2542984 A JP2542984 A JP 2542984A JP H0628001 B2 JPH0628001 B2 JP H0628001B2
- Authority
- JP
- Japan
- Prior art keywords
- load
- unit
- control unit
- sequential operation
- cutoff
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24003—Emergency stop
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Safety Devices In Control Systems (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は家庭用電気機器、例えば、洗濯機，食器洗い
機，乾燥機等の制御回路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control circuit for household electric appliances such as a washing machine, a dishwasher and a dryer.
従来例の構成とその問題点 従来、例えば洗濯機の蓋開閉時に、動作を停止する場
合、蓋に連動するスイッチを設け、そのスイッチ動作を
遂次動作制御部に入力し、遂次動作の制御部の指示によ
り、負荷（例えばモータ）への通電を停止する構成が一
般的であった。Conventional configuration and its problems Conventionally, for example, when the operation is stopped when the lid of the washing machine is opened and closed, a switch interlocking with the lid is provided, and the switch operation is input to the sequential operation control unit to control the sequential operation. In general, the configuration is such that the energization of a load (for example, a motor) is stopped according to an instruction from the section.
しかしながら、遂次動作制御部を介し制御する為、負荷
に直列に接続して負荷を制御する制御部が故障した場合
に、スイッチ動作によって負荷への通電が停止されない
場合があり、フェールセーフ制御にならないという問題
を有していた。However, since the control is performed via the sequential operation control unit, if the control unit that controls the load by connecting it in series with the load fails, energization of the load may not be stopped by the switch operation, and fail-safe control can be performed. It had the problem of not becoming.
発明の目的 本発明は、安全かつ確実に負荷への通電を遮断すると同
時に遂次動作の進行を停止することを目的としている。OBJECT OF THE INVENTION It is an object of the present invention to safely and reliably cut off the energization of a load and at the same time stop the progress of the sequential operation.
発明の構成 上記目的を達成するため本発明の制御回路は負荷と、負
荷を制御する制御部と、負荷と接続され負荷への通電を
強制的に遮断する遮断部と、遮断部に接続され遮断部の
出力をレベル変換するレベル変換部と、前記制御部を制
御して遂次動作制御する遂次動作制御部とを備え、前記
遂次動作制御部は、前記遮断部が通電を遮断した時、前
記レベル変換部の出力を入力として前記制御部を非導通
状態にし遂次動作を停止するように構成し、前記遮断部
にて直接負荷を遮断するとともにレベル変換部を介し負
荷が遮断された事を遂次動作制御部へ伝達し、遂次動作
制御部により負荷を制御するものである。In order to achieve the above object, the control circuit of the present invention includes a load, a control unit that controls the load, a cutoff unit that is connected to the load and forcibly cuts off energization of the load, and a cutoff unit that is connected to the cutoff unit. A level conversion unit for converting the level of the output of the unit, and a sequential operation control unit for controlling the sequential operation by controlling the control unit, wherein the sequential operation control unit is provided when the cutoff unit cuts off energization. , The output of the level conversion unit is input to make the control unit non-conductive to stop the subsequent operation, and the interruption unit directly interrupts the load and the load is interrupted via the level conversion unit. The thing is transmitted to the sequential operation control unit, and the load is controlled by the sequential operation control unit.
実施例の発明 第１図にて本発明の実施例を説明する。Invention of Embodiment An embodiment of the present invention will be described with reference to FIG.
１は負荷を制御する制御部で例えば、両方向性半導体ス
イッチング素子からなる。２はモータ等の負荷、３は例
えば、蓋に連動するスイッチからなる遮断部、４は前記
遮断部３の出力をレベル変換するレベル変換部で、例え
ばトランジスタ等で構成される。５はマイクロコンピュ
ータ等で、構成される遂次動作制御部である。Reference numeral 1 denotes a control unit for controlling the load, which is composed of, for example, a bidirectional semiconductor switching element. Reference numeral 2 is a load of a motor or the like, 3 is a cutoff portion formed of a switch interlocking with a lid, and 4 is a level conversion portion for converting the level of the output of the cutoff portion 3 and is composed of, for example, a transistor. Reference numeral 5 denotes a sequential operation control unit which is composed of a microcomputer or the like.
例えばスイッチからなる遮断部３にて、直接負荷２を遮
断するとともに遮断部３からの出力をレベル変換部４を
介して遂次動作制御部５に入力し、負荷２の遮断を確実
に行いつつ、遂次動作制御部５に、遮断部３の遮断状態
を伝達するものである。第２図にて、本発明を洗濯機に
応用した一実施例を説明する。For example, the breaking unit 3 including a switch cuts off the load 2 directly, and the output from the breaking unit 3 is input to the sequential operation control unit 5 via the level conversion unit 4 to reliably cut off the load 2. The interruption state of the interruption unit 3 is transmitted to the sequential operation control unit 5. An embodiment in which the present invention is applied to a washing machine will be described with reference to FIG.
１１は制御部として負荷を制御する両方向性スイッチン
グ素子で、負荷としてのモータ１２を制御する。１３は
遮断部として蓋に連動するスイッチであり、蓋閉時には
ａ側に接している。今、蓋が開かれるとスイッチ１３は
ｂ側に接し、モータ１２への通電が遮断される。一方、
前記スイッチ１３はｂ側に接しているので、商用電源１
０の電圧はレベル変換部４に印加される。すなわち商用
電源１０の電圧はレベル変換部４を構成する抵抗４１，
４２を介してトランジスタ４４に印加されトランジスタ
４４を導通状態にする。４３はトランジスタの保護用ダ
イオードである。トランジスタ４４が導通すると、抵抗
４５，４６を介してトランジスタ４７を導通せしめ、抵
抗４８を介して、遂次動作制御部５に入力される。遂次
動作制御部５は例えば、マイクロコンピュータ等で構成
され、洗濯動作のシーケンスのコントロール及び負荷の
コントロールを行うもので、前記入力信号によりシーケ
ンス動作を停止するとともに抵抗６，トランジスタ７，
抵抗８を介して前記両方向性半導体スイッチング素子１
１を非導通状態に制御する。９は両方向性半導体スイッ
チング素子１１、レベル変換部４および遂次動作制御部
５へ供給されるＤＣ電源である。A bidirectional switching element 11 controls a load as a control unit, and controls a motor 12 as a load. Reference numeral 13 denotes a switch which is interlocked with the lid as a blocking portion, and is in contact with the side a when the lid is closed. Now, when the lid is opened, the switch 13 comes into contact with the side b, and the power supply to the motor 12 is cut off. on the other hand,
Since the switch 13 is in contact with the b side, the commercial power source 1
The voltage of 0 is applied to the level conversion unit 4. That is, the voltage of the commercial power source 10 is the resistance 41, which constitutes the level conversion unit 4,
It is applied to the transistor 44 via 42 to make the transistor 44 conductive. Reference numeral 43 is a diode for protecting the transistor. When the transistor 44 is turned on, the transistor 47 is turned on via the resistors 45 and 46, and is input to the sequential operation control unit 5 via the resistor 48. The sequential operation control unit 5 is composed of, for example, a microcomputer and controls the sequence of the washing operation and the load. The sequential operation is stopped by the input signal and the resistor 6, the transistor 7,
The bidirectional semiconductor switching element 1 through the resistor 8
1 is controlled to a non-conduction state. Reference numeral 9 is a DC power supply supplied to the bidirectional semiconductor switching element 11, the level conversion unit 4, and the sequential operation control unit 5.
発明の効果 以上述べた様に本発明によれば、負荷を制御する制御部
と、負荷に接続され負荷への通電を強制的に遮断する遮
断部と、前記遮断部に接続され遮断部の出力をレベル変
換するレベル変換部と、前記制御部を制御して遂次動作
制御する遂次動作制御部とを備え、前記遂次動作制御部
は、前記遮断部が通電を遮断した時、前記レベル変換部
の出力を入力として前記制御部を非導通状態にし遂次動
作を停止するようにしたから、遮断部と制御部とによっ
て負荷への通電を安全かつ確実に遮断できるとともに同
時に遂次動作も停止でき、遮断部を復帰させると、遂次
動作制御部は、レベル変換部の出力によって制御部を導
通状態にするとともに遂次動作を停止した状態からひき
つづいて行うことができ、その効果は大である。EFFECTS OF THE INVENTION As described above, according to the present invention, a control unit that controls a load, a cutoff unit that is connected to the load and forcibly cuts off energization to the load, and an output of the cutoff unit that is connected to the cutoff unit. A level conversion unit for level conversion, and a sequential operation control unit for controlling the sequential operation by controlling the control unit. The sequential operation control unit, when the cutoff unit cuts off energization, Since the output of the conversion unit is used as an input to bring the control unit into a non-conducting state and the sequential operation is stopped, energization to the load can be safely and reliably interrupted by the interrupting unit and the control unit, and at the same time the sequential operation is also performed. When it can be stopped and the interruption part is restored, the sequential operation control part can make the control part conductive by the output of the level conversion part and continue the operation from the stopped state, and the effect is great. Is.
第１図は本発明の一実施例を示す制御回路のブロック
図、第２図は同制御回路の具体構成を示す回路図であ
る。 １……制御部、２……負荷、３……遮断部、４……レベ
ル変換部、５……遂次動作制御部。FIG. 1 is a block diagram of a control circuit showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a specific configuration of the control circuit. 1 ... Control unit, 2 ... Load, 3 ... Breaking unit, 4 ... Level conversion unit, 5 ... Sequential operation control unit.
Claims (1)
接続され負荷への通電を強制的に遮断する遮断部と、前
記遮断部に接続され遮断部の出力をレベル変換するレベ
ル変換部と、前記制御部を制御して遂次動作制御する遂
次動作制御部とを備え、前記遂次動作制御部は、前記遮
断部が通電を遮断した時、前記レベル変換部の出力を入
力として前記制御部を非導通状態にし、遂次動作を停止
するようにした制御回路。1. A load, a control unit for controlling the load, a cutoff unit connected to the load to forcibly cut off energization to the load, and a level conversion unit for converting the output of the cutoff unit connected to the cutoff unit. And a sequential operation control unit that controls the sequential operation by controlling the control unit. The sequential operation control unit inputs the output of the level conversion unit when the cutoff unit cuts off energization. As a control circuit, the control unit is brought into a non-conducting state to stop the sequential operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59025429A JPH0628001B2 (en) | 1984-02-14 | 1984-02-14 | Control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59025429A JPH0628001B2 (en) | 1984-02-14 | 1984-02-14 | Control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60169901A JPS60169901A (en) | 1985-09-03 |
| JPH0628001B2 true JPH0628001B2 (en) | 1994-04-13 |
Family
ID=12165723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59025429A Expired - Lifetime JPH0628001B2 (en) | 1984-02-14 | 1984-02-14 | Control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0628001B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57166197A (en) * | 1981-04-04 | 1982-10-13 | Hitachi Ltd | Method of operating household electric apparatus and household electric apparatus |
| JPS5861789A (en) * | 1981-10-06 | 1983-04-12 | 株式会社日立製作所 | How to control an electronically controlled washing machine |
-
1984
- 1984-02-14 JP JP59025429A patent/JPH0628001B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60169901A (en) | 1985-09-03 |
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