KR940005188A - Microcomputer runaway safety device - Google Patents

Microcomputer runaway safety device Download PDF

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Publication number
KR940005188A
KR940005188A KR1019920014249A KR920014249A KR940005188A KR 940005188 A KR940005188 A KR 940005188A KR 1019920014249 A KR1019920014249 A KR 1019920014249A KR 920014249 A KR920014249 A KR 920014249A KR 940005188 A KR940005188 A KR 940005188A
Authority
KR
South Korea
Prior art keywords
microwave oven
microcomputer
output
monitoring
safety device
Prior art date
Application number
KR1019920014249A
Other languages
Korean (ko)
Other versions
KR940007637B1 (en
Inventor
김재명
Original Assignee
이헌조
주식회사금성사
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 이헌조, 주식회사금성사 filed Critical 이헌조
Priority to KR1019920014249A priority Critical patent/KR940007637B1/en
Publication of KR940005188A publication Critical patent/KR940005188A/en
Application granted granted Critical
Publication of KR940007637B1 publication Critical patent/KR940007637B1/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Electric Ovens (AREA)

Abstract

본 발명은 전자레인지의 안전장치에 관한 것으로 종래의 전자레인지에 의하면, 외부잡음이나, 내부회로 이상등으로 마이컴(4)이 오동작하여 폭주현사이 발생되는데 대한 대처수단이 없으므로 이 경우에 회로손상은 물론 과도한 고주파 출력에 의한 요리불량과 화재등의 안전사고가 초래되는 문제점을 해결하기 위한 것이다.The present invention relates to a safety device for a microwave oven. According to the conventional microwave oven, since there is no means for dealing with occurrence of congestion between the microcomputer 4 due to an external noise or an internal circuit abnormality, the circuit damage is Of course, it is to solve the problem of safety accidents such as cooking failure and fire caused by excessive high frequency output.

본 발명은 마이컴에서 정상동작 여부에 따라 자체적으로 출력되는 클럭의 상태를 감시하여 이상여부를 검출하고, 검출결과 이상동작시에는 고주파 출력(전원스위칭에 의한 고주파 발진 전원공급)을 자동적으로 차단시켜 주므로서 회로소자의 보호를 기하고 전자 레인지 사용에 안정성과 신뢰도를 확보해줄 수 있도록 한 것으로 전자레인지에 적용한다.The present invention monitors the state of the clock output by itself in accordance with the normal operation of the microcomputer to detect whether there is an abnormality, and in case of abnormal operation of the detection result, the high frequency output (high frequency oscillation power supply by power switching) is automatically shut off. In order to protect the circuit elements and ensure the stability and reliability of the microwave oven, it is applied to the microwave oven.

Description

전자레인지의 마이컴 폭주 안전장치Microcomputer runaway safety device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 2 도는 본 발명의 전자레인지 회로도.2 is a microwave circuit diagram of the present invention.

Claims (2)

전자레인지의 요리제어를 수행하는 마이컴(4)의 정상 또는 이상동작에 따라 마이컴(4)에서 출력되는 클록을 감시하여 마이컴의 이상동작 여부를 검출 및 판별하는 폭주감시수단(14)과, 상기 폭주감시수단(14)의 감시결과 이상동작시에 출력되는 제어신호를 받아 스위칭 전원부(9) 동작을 중지시켜 고주파 발진출력을 차단(OFF)시키는 출력차단 제어수단(15)으로 구성된 전자레인지의 마이컴 폭주 안전장치.Congestion monitoring means 14 for monitoring and detecting the clock output from the microcomputer 4 in accordance with the normal or abnormal operation of the microcomputer 4 to perform cooking control of the microwave oven, and the runaway Microcomputer runaway of the microwave oven composed of output blocking control means 15 which stops the operation of the switching power supply unit 9 in response to a control signal output during the abnormal operation of the monitoring result of the monitoring means 14 to turn off the high frequency oscillation output. safety device. 제 1 항에 있어서, 폭주감시수단(14)은 클록을 미분하는 미분회로(14A)와, 미분신호의 레벨을 제한하는 리미터(14B)와, 레벨제한된 신호를 적분 처리하는 적분회로(14C)와, 적분된 신호레벨에 따라 반전 또는 비반전 신호를 출력차단 제어수단(15)에 공급하는 레벨검출 및 인버터(14D)로 구성된 전자레인지의 마이컴 폭주 안전장치.2. The runaway monitoring unit (14) according to claim 1, wherein the runaway monitoring unit (14) includes a differential circuit (14A) for differentiating a clock, a limiter (14B) for limiting the level of the differential signal, an integrating circuit (14C) for integrating the level limited signal, And a microcomputer congestion safety device of a microwave oven comprising a level detection and an inverter 14D for supplying an inverted or non-inverted signal to the output cutoff control means 15 according to the integrated signal level. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920014249A 1992-08-08 1992-08-08 Microcomputer safety apparatus of microwave oven KR940007637B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920014249A KR940007637B1 (en) 1992-08-08 1992-08-08 Microcomputer safety apparatus of microwave oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920014249A KR940007637B1 (en) 1992-08-08 1992-08-08 Microcomputer safety apparatus of microwave oven

Publications (2)

Publication Number Publication Date
KR940005188A true KR940005188A (en) 1994-03-16
KR940007637B1 KR940007637B1 (en) 1994-08-22

Family

ID=19337677

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920014249A KR940007637B1 (en) 1992-08-08 1992-08-08 Microcomputer safety apparatus of microwave oven

Country Status (1)

Country Link
KR (1) KR940007637B1 (en)

Also Published As

Publication number Publication date
KR940007637B1 (en) 1994-08-22

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