KR940007448A - Temperature sensing weight sensor for microwave oven - Google Patents

Temperature sensing weight sensor for microwave oven Download PDF

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Publication number
KR940007448A
KR940007448A KR1019920016575A KR920016575A KR940007448A KR 940007448 A KR940007448 A KR 940007448A KR 1019920016575 A KR1019920016575 A KR 1019920016575A KR 920016575 A KR920016575 A KR 920016575A KR 940007448 A KR940007448 A KR 940007448A
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KR
South Korea
Prior art keywords
unit
weight
microwave oven
piezoelectric element
support roller
Prior art date
Application number
KR1019920016575A
Other languages
Korean (ko)
Other versions
KR940010286B1 (en
Inventor
김응수
Original Assignee
이헌조
주식회사 금성사
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Application filed by 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019920016575A priority Critical patent/KR940010286B1/en
Publication of KR940007448A publication Critical patent/KR940007448A/en
Application granted granted Critical
Publication of KR940010286B1 publication Critical patent/KR940010286B1/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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/6464—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using weight sensors
    • 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
    • H05B6/6408—Supports or covers specially adapted for use in microwave heating apparatus
    • H05B6/6411—Supports or covers specially adapted for use in microwave heating apparatus the supports being rotated
    • 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)
  • Electric Ovens (AREA)

Abstract

본 발명은 전자레인지의 온도보상용 중량 감지장치에 관란 것으로, 종래에는 압전소자의 충격량에 따라 변화하는 출력전압이 온포에 따라 바뀌어서 중량 감지의 오차가 발생하는 문제점이 있었다.The present invention relates to a temperature compensation weight sensing device of a microwave oven, and in the related art, there is a problem in that an output voltage that changes according to an impact amount of a piezoelectric element is changed depending on the onpo, thereby causing an error in weight sensing.

따라서 종래의 문제점을 해결하기 위하여 본 발명은 두개의 동일한 압전 디바이스를 같은 감지회로에 접속하고 그 두개의 압전 디바이스 출력을 증폭기의 반전, 비만전 입력으로씬 온도에 의한 정전용량의 변화분을 상쇄시켜 정화한 중량을 측정할 수 있도록 하였다.Therefore, in order to solve the conventional problem, the present invention connects two identical piezoelectric devices to the same sensing circuit, and offsets the change in capacitance caused by the scene temperature by inverting and outputting the two piezoelectric device outputs to the amplifier. The clarified weight was allowed to be measured.

Description

전자레인지의 온도보상용 중량감지장치Weight sensing device for temperature compensation of microwave oven

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

제 5 도는 제 4 도에 의한 압전소자의 출력전압 파형도.5 is a waveform diagram of an output voltage of the piezoelectric element according to FIG. 4;

제 6 도는 제 4 도에 의한 압전소자 출력전압의 R-C의 필터 회로도.6 is a filter circuit diagram of R-C of the piezoelectric element output voltage according to FIG.

제 7 도는 본 발명 전자레인지의 온도보상용 중량 감지회로도.7 is a weight compensation circuit diagram for temperature compensation of the present invention microwave oven.

제 8 도는 본 발명에 의한 턴테이블 회전을 가능하게 하는 부분의 확대 단면도.8 is an enlarged cross sectional view of a portion enabling the turntable rotation according to the present invention;

Claims (3)

조작부(1)의 키입력에 의한 명령을 수행함과 아울러 전자레일지의 전체동작을 제어하는 마이크로 프로세서(2)와, 상기 마이크로 프로세서(2)의 제어에 의해 동작전원을 공급하는 구동수단(3)에 따라 가열실(6)의 회전테이블(7)을 회전토록 하는 회전모터(8)와, 상기 회전테이블(7)을 지지하여 가열실(6)의 저면을 회전하는 지지로울러(11)와, 상기 지지로울러(11)를 기지하는 회전링(12)과, 상기 지지로울러(11)에 부착되어 회전테이블(7)위에 놓여진 음식물의 중량을 감지하는 압전소자(13)와, 상기 압전소자(13)로부터 받은 감지 신호를 입력받아 신호처리함과 아울러 온도를 보상하도록 수행하는 신호처리수단(14)으로 된 전자레인지의 온도보상용 중량감지장치.To the microprocessor 2 which executes a command by key input of the operation unit 1 and controls the overall operation of the electronic rail, and the drive means 3 which supplies the operating power under the control of the microprocessor 2. A rotary motor 8 for rotating the rotary table 7 of the heating chamber 6, a support roller 11 for supporting the rotary table 7 to rotate the bottom surface of the heating chamber 6, and A rotary ring 12 supporting the support roller 11, a piezoelectric element 13 attached to the support roller 11 to sense the weight of food placed on the rotary table 7, and the piezoelectric element 13. A temperature sensing weight sensing device for a microwave oven comprising signal processing means for receiving a sense signal received from the signal processing and performing the temperature compensation. 제 1 항에 있어서, 상기 압전소자(13)는 지지로울러(11) 회전시 가열실 저벽에 돌출되어 있는 고무(18)을 누르고 지나갈때의 압력으로서 음식물의 중량을 측정함을 특징으로 하는 전자레인지의 온도보상용 중량 감지장치.The microwave oven according to claim 1, wherein the piezoelectric element (13) measures the weight of food as the pressure when the rubber (18) protruding from the bottom wall of the heating chamber is pressed when the support roller (11) rotates. Weight compensation device for temperature compensation. 제 1 항에 있어서, 상기 신호처리수단(14)는 압전소자(13)로부터 입력되는 신호를 검지하는 센서검지부(141)(141')와, 검파부(142)(142') 및 필터(143)(143')를 각기 통과 센서검지부(141)(141')로부터 받은 신호에 대해 검파 및 필터링한 신호를 반전, 비반전 단자로 입력받아 증폭하는 증폭부(144)와, 오프셋 조절부(145)를 통해 오프셋(offset)이 조절된 증폭부(144)의 출력신호에 대해 피크치를 홀드시키는 피크홀드부(146)와, 이 피크홀드부(146)의 출력을 받은 마이크로 프로세서(147)의 제어에 따라 리세트시켜 피크홀드부(146)로 출력하는 리세트부(148)로된 전자레인지의 온도보상용 중량감지장치.2. The signal processing unit (14) according to claim 1, wherein the signal processing means (14) includes sensor detectors (141, 141 '), detectors (142, 142'), and filter (143) for detecting a signal input from the piezoelectric element (13). Amplifying unit 144 and offset adjusting unit 145 for receiving and amplifying the signals received and filtered from the signals received from the sensor detection units 141 and 141 'through the inverting and non-inverting terminals. Peak hold unit 146 for holding a peak value with respect to the output signal of the amplification unit 144 whose offset is adjusted through the < RTI ID = 0.0 > A temperature compensation weight sensing device for a microwave oven comprising a reset unit (148) which is reset in accordance with the above and outputs to the peak hold unit (146). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920016575A 1992-09-09 1992-09-09 Weight-measuring device for a range KR940010286B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920016575A KR940010286B1 (en) 1992-09-09 1992-09-09 Weight-measuring device for a range

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920016575A KR940010286B1 (en) 1992-09-09 1992-09-09 Weight-measuring device for a range

Publications (2)

Publication Number Publication Date
KR940007448A true KR940007448A (en) 1994-04-27
KR940010286B1 KR940010286B1 (en) 1994-10-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920016575A KR940010286B1 (en) 1992-09-09 1992-09-09 Weight-measuring device for a range

Country Status (1)

Country Link
KR (1) KR940010286B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100455737B1 (en) * 1998-12-30 2005-04-19 주식회사 하이닉스반도체 Gate oxide film formation method of semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100455737B1 (en) * 1998-12-30 2005-04-19 주식회사 하이닉스반도체 Gate oxide film formation method of semiconductor device

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Publication number Publication date
KR940010286B1 (en) 1994-10-22

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