JP3127030B2 - Microcomputer control system for high-frequency heating equipment - Google Patents
Microcomputer control system for high-frequency heating equipmentInfo
- Publication number
- JP3127030B2 JP3127030B2 JP04006960A JP696092A JP3127030B2 JP 3127030 B2 JP3127030 B2 JP 3127030B2 JP 04006960 A JP04006960 A JP 04006960A JP 696092 A JP696092 A JP 696092A JP 3127030 B2 JP3127030 B2 JP 3127030B2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- control circuit
- inverter control
- inverter
- microcomputer
- 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 - Fee Related
Links
Landscapes
- Control Of High-Frequency Heating Circuits (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はインバータ電源を備えた
高周波加熱装置のマイクロコンピュータ制御システムに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microcomputer control system for a high-frequency heating device provided with an inverter power supply.
【０００２】[0002]
【従来の技術】従来、この種のシステムにおいては、例
えば特開昭６０−１８６９０２号公報に示す如く、イン
バータ制御回路やインバータ電源に異常が発生した場
合、マイクロコンピュータが、加熱を中断させたり、シ
ステムを停止させるなどの処理をおこなっていた。2. Description of the Related Art Conventionally, in a system of this kind, when an abnormality occurs in an inverter control circuit or an inverter power supply as shown in, for example, Japanese Patent Application Laid-Open No. 60-186902, a microcomputer interrupts heating, Processing such as stopping the system was being performed.
【０００３】[0003]
【本発明が解決しようとする課題】加熱中にインバータ
制御回路に異常が発生した場合、異常発生時に加熱を行
っていた食品は、調理が途中で中断されるため、食味不
可となっていた。When an abnormality occurs in the inverter control circuit during heating, the food that has been heated at the time of occurrence of the abnormality is not tasteable because cooking is interrupted halfway.
【０００４】しかし、インバ−タ制御回路のように主に
半導体で構成されているシステムにおいては、異常が発
生しても一度電源の供給を停止し、素子の初期化を行え
ば正常に戻る異常モ−ドが数多く存在しており、この種
の異常モ−ドが発生した場合も同様の処理を行っている
ため食品は食味不可となっていた。However, in a system mainly composed of semiconductors, such as an inverter control circuit, even if an abnormality occurs, the power supply is stopped once and the element is initialized to restore the normal state. There are many modes, and even when this kind of abnormal mode occurs, the same processing is performed, so that the food becomes tasteless.
【０００５】[0005]
【課題を解決するための手段】本発明は上記課題を解決
するためになされたものであり、インバ−タ制御回路へ
の電源供給ラインに電源供給を停止させる電源供給停止
素子を設け、その素子をマイクロコンピュ−タで制御す
るものであり、マイクロコンピュ−タで制御されインバ
−タ制御回路への電源供給を停止させる電源供給停止素
子をインバ−タ制御回路に接続したものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and comprises a power supply stop element for stopping power supply to a power supply line to an inverter control circuit. Is controlled by a microcomputer, and a power supply stop element which is controlled by the microcomputer and stops power supply to the inverter control circuit is connected to the inverter control circuit.
【０００６】[0006]
【作用】加熱中にインバ−タ制御回路に異常が発生した
場合、マイクロコンピュ−タが電源供給停止素子を動作
させてインバ−タ制御回路への電源供給ラインのみを一
旦切断し、再度電源供給停止素子を動作させてインバ−
タ制御回路への電源供給ラインを接続することにより、
インバ−タ制御回路のみを初期化させ、瞬時故障に対
し、加熱を中断することなくインバ−タ制御回路の異常
を解消させ、インバ−タ制御回路の半導体素子の初期化
を行う。When an abnormality occurs in the inverter control circuit during heating, the microcomputer operates the power supply stop element to temporarily cut off only the power supply line to the inverter control circuit and supply power again. Activate the stop element and invert
By connecting the power supply line to the
Only the inverter control circuit is initialized, and for an instantaneous failure, the abnormality of the inverter control circuit is eliminated without interrupting the heating, and the semiconductor element of the inverter control circuit is initialized.
【０００７】[0007]
【実施例】図１は本発明の一実施例を施した高周波加熱
装置のマイクロコンピュータ制御システムのブロック回
路図であり、図２は同じく異常発生時のマイクロコンピ
ュータのソフトウェア処理の流れ図である。FIG. 1 is a block circuit diagram of a microcomputer control system of a high-frequency heating apparatus according to an embodiment of the present invention, and FIG. 2 is a flowchart of software processing of the microcomputer when an abnormality occurs.
【０００８】図において、１はマイクロコンピュータ、
２はインバータ電源、３はインバータ電源２を制御する
ためのインバータ制御回路、４はインバータ制御回路３
に電源を供給する電源供給回路、５はインバータ制御回
路３の電源供給を停止させるための電源供給停止素子、
６はインバータ電源２から高電圧を印加され発振するマ
グネトロン、７はインバータ電源２およびインバータ制
御回路３の異常を検出するための異常検出回路である。In the figure, 1 is a microcomputer,
2 is an inverter power supply, 3 is an inverter control circuit for controlling the inverter power supply 2, and 4 is an inverter control circuit.
A power supply circuit for supplying power to the power supply, a power supply stop element for stopping power supply to the inverter control circuit 3,
Reference numeral 6 denotes a magnetron that oscillates when a high voltage is applied from the inverter power supply 2, and 7 denotes an abnormality detection circuit for detecting an abnormality in the inverter power supply 2 and the inverter control circuit 3.
【０００９】図１においてインバータ制御回路３は、マ
イクロコンピュータ１からの制御信号に従いインバータ
電源２の制御を行いマグネトロン６を発振させ加熱す
る。異常検出回路６はインバータ電源２に供給される一
次電流を監視し、間接的にインバータ電源２およびイン
バータ制御回路３の異常を検出するものとする。In FIG. 1, an inverter control circuit 3 controls an inverter power supply 2 in accordance with a control signal from a microcomputer 1 to oscillate and heat a magnetron 6. The abnormality detection circuit 6 monitors the primary current supplied to the inverter power supply 2 and indirectly detects abnormality of the inverter power supply 2 and the inverter control circuit 3.
【００１０】加熱中に異常が発生した場合、マイクロコ
ンピュータ１は加熱処理を継続したまま、電源供給停止
素子５を動作させ、一旦インバータ制御回路３の電源供
給を停止させる。When an abnormality occurs during the heating, the microcomputer 1 operates the power supply stop element 5 while continuing the heating process, and temporarily stops the power supply of the inverter control circuit 3.
【００１１】これにより、インバータ制御回路３内の半
導体の初期化をし、その後電源供給停止素子５の動作を
解除し、再びインバータ制御回路３に電源供給を開始す
るとともに、インバータ制御回路３に対しインバータ電
源２の制御指令を送り、インバータ制御回路３を復帰さ
せ、加熱を継続する。As a result, the semiconductor in the inverter control circuit 3 is initialized, the operation of the power supply stop element 5 is released, and the power supply to the inverter control circuit 3 is started again. The control command of the inverter power supply 2 is sent, the inverter control circuit 3 is returned, and the heating is continued.
【００１２】復帰後、規定時間内に再度異常が発生した
場合には恒久故障と判定しシステムを停止させ、サービ
スコールを行う。After the recovery, if an abnormality occurs again within the specified time, it is determined that the failure is a permanent failure, the system is stopped, and a service call is made.
【００１３】[0013]
【発明の効果】本発明は、マグネトロンを駆動するため
のインバ−タ電源を制御するインバ−タ制御回路にマイ
クロコンピュ−タで制御されインバ−タ制御回路への電
源供給を停止させる電源供給停止素子を接続し、半導体
などの初期化により解消されるような異常モ−ドに対し
ては、加熱を途中で中断させることなく異常を除去する
ことにより、上述した理由による調理の失敗を防止する
ことができ、高周波加熱装置の信頼性を向上させること
ができる。According to the present invention, an inverter control circuit for controlling an inverter power supply for driving a magnetron is controlled by a microcomputer to stop power supply to the inverter control circuit. In the abnormal mode in which the elements are connected and the mode is eliminated by initialization of the semiconductor or the like, the abnormalities are removed without interrupting the heating on the way, thereby preventing the cooking failure for the above-described reason. And the reliability of the high-frequency heating device can be improved.
【図１】本発明の一実施例を示す高周波加熱装置のマイ
クロコンピュータ制御システムのブロック回路図であ
る。FIG. 1 is a block circuit diagram of a microcomputer control system of a high-frequency heating device according to an embodiment of the present invention.
【図２】同じくマイクロコンピュータのソフトウェア処
理を表した流れ図である。FIG. 2 is a flowchart showing software processing of the microcomputer.
１ マイクロコンピュータ ２ インバータ電源 ３ インバータ制御回路 ５ 電源供給停止素子 ６ マグネトロン ７ 異常検出回路 DESCRIPTION OF SYMBOLS 1 Microcomputer 2 Inverter power supply 3 Inverter control circuit 5 Power supply stop element 6 Magnetron 7 Abnormality detection circuit
Claims (1)
ン（６）を駆動するインバ−タ電源（２）と、このイン
バ−タ電源（２）を制御するためのインバ−タ制御回路
（３）と、このインバ−タ制御回路（３）が作動するた
めの電源を供給する電源供給回路（４）と、この電源供
給回路（４）とインバ−タ制御回路（３）との間に設け
られた電源供給停止素子（５）と、インバ−タ制御回路
（３）および電源供給停止素子（５）を制御するマイク
ロコンピュ−タ（１）とで構成された高周波加熱装置の
マイクロコンピュ−タ制御システムにおいて、加熱中に
インバ−タ制御回路（３）に異常が発生した場合、マイ
クロコンピュ−タ（１）が電源供給停止素子（５）を動
作させてインバ−タ制御回路（３）への電源供給ライン
のみを一旦切断し、再度電源供給停止素子（５）を動作
させてインバ−タ制御回路（３）への電源供給ラインを
接続することにより、インバ−タ制御回路（３）のみを
初期化させ、瞬時故障に対し、加熱を中断することなく
インバ−タ制御回路（３）の異常を解消させる機能を持
たせたことを特徴とする高周波加熱装置のマイクロコン
ピュ−タ制御システム。A magnetron (6), an inverter power supply (2) for driving the magnetron (6), and an inverter control circuit (3) for controlling the inverter power supply (2). When the inverter control circuit (3) operates.
Power supply circuit (4) for supplying power for
Provided between the supply circuit (4) and the inverter control circuit (3)
Microcomputer of a high-frequency heating device comprising a power supply stop element (5), and an inverter control circuit (3) and a microcomputer (1) for controlling the power supply stop element (5) . In the control system, when an abnormality occurs in the inverter control circuit (3) during heating, the microcomputer (1) operates the power supply stop element (5).
And temporarily cut off only the power supply line to the inverter control circuit (3), and operate the power supply stop element (5) again.
Then, by connecting the power supply line to the inverter control circuit (3), only the inverter control circuit (3) is initialized, and the inverter control is performed without interrupting the heating in case of a momentary failure. A microcomputer control system for a high-frequency heating device having a function of eliminating an abnormality of the circuit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04006960A JP3127030B2 (en) | 1992-01-18 | 1992-01-18 | Microcomputer control system for high-frequency heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04006960A JP3127030B2 (en) | 1992-01-18 | 1992-01-18 | Microcomputer control system for high-frequency heating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05198372A JPH05198372A (en) | 1993-08-06 |
| JP3127030B2 true JP3127030B2 (en) | 2001-01-22 |
Family
ID=11652790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04006960A Expired - Fee Related JP3127030B2 (en) | 1992-01-18 | 1992-01-18 | Microcomputer control system for high-frequency heating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3127030B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6337731B1 (en) | 1992-04-28 | 2002-01-08 | Semiconductor Energy Laboratory Co., Ltd. | Electro-optical device and method of driving the same |
| US6693681B1 (en) | 1992-04-28 | 2004-02-17 | Semiconductor Energy Laboratory Co., Ltd. | Electro-optical device and method of driving the same |
-
1992
- 1992-01-18 JP JP04006960A patent/JP3127030B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6337731B1 (en) | 1992-04-28 | 2002-01-08 | Semiconductor Energy Laboratory Co., Ltd. | Electro-optical device and method of driving the same |
| US6693681B1 (en) | 1992-04-28 | 2004-02-17 | Semiconductor Energy Laboratory Co., Ltd. | Electro-optical device and method of driving the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05198372A (en) | 1993-08-06 |
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