KR960001631A - Microwave Weight Detection Device - Google Patents

Microwave Weight Detection Device Download PDF

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Publication number
KR960001631A
KR960001631A KR1019940013938A KR19940013938A KR960001631A KR 960001631 A KR960001631 A KR 960001631A KR 1019940013938 A KR1019940013938 A KR 1019940013938A KR 19940013938 A KR19940013938 A KR 19940013938A KR 960001631 A KR960001631 A KR 960001631A
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KR
South Korea
Prior art keywords
weight
pressure
microwave oven
sensitive
microcomputer
Prior art date
Application number
KR1019940013938A
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Korean (ko)
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KR0125724B1 (en
Inventor
이재영
Original Assignee
배순훈
대우전자 주식회사
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Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940013938A priority Critical patent/KR0125724B1/en
Publication of KR960001631A publication Critical patent/KR960001631A/en
Application granted granted Critical
Publication of KR0125724B1 publication Critical patent/KR0125724B1/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

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

본 발명은 전자렌지의 중량감지장치에 관한 것으로, 종래에는 압전소자방식, 정전용량방식등이 있으나, 구조가 복잡하고, 출력신호처리가 복잡하며, 고주파에 의한 잡음의 영향등으로 조리중에는 중량감지가 어려웠다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weight sensing apparatus of a microwave oven. Conventionally, there are piezoelectric elements and capacitive methods, but the structure is complicated, the output signal processing is complicated, and the weight is detected during cooking due to the influence of noise caused by high frequency. It was difficult.

본 발명은 이를 감안하여 자동조리기능을 갖는 전자렌지에 있어서, 두장의 PE필름에 감압 저항체를 인쇄하여 그 감압 저항체가 서로 맞대어지도록 포개고, 이를 보호용 철판 사이에 끼워 고정한 후, 트레이 위에 올려지는 조리물의 중량이 샤프트를 통해서 상기한 감압 저항체에 전달되게 설치하고, 상기한 상하부의 감압 저항체를 리드선으로 PCB에 연결하여 그 감압 저항체의 저항치 변화에 의거하여 마이컴이 조리물의 중량을 환산하도록 구성한 중량감지장치를 제공함으로써, 구조가 간단하고 정확성이 높으며, 조리중에도 중량을 감지할 수 있는 등 다양한 효과가 얻어지는 것이다.In view of the present invention, in a microwave oven having an automatic cooking function, a pressure-sensitive resistor is printed on two PE films, and the pressure-sensitive resistors are overlapped with each other. The weight sensing device is installed so that the weight is transmitted to the pressure-sensitive resistor through the shaft, and the upper and lower pressure-sensitive resistors are connected to the PCB by a lead wire, and the weight sensing device is configured so that the microcomputer converts the weight of the food based on the change in resistance of the pressure-sensitive resistor. By providing a simple structure and high accuracy, it is possible to obtain a variety of effects, such as being able to detect the weight during cooking.

Description

전자렌지의 중량감지장치Microwave Weight Detection Device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 의한 전자렌지의 중량감지장치의 개략 구성도.1 is a schematic configuration diagram of a weight sensing apparatus of a microwave oven according to the present invention.

제2도는 본 발명에 의한 전자렌지의 중량감지 센서의 상세도.2 is a detailed view of a weight sensor of a microwave oven according to the present invention.

제3도는 본 발명에 의한 중량감지회로를 보인 블록도.3 is a block diagram showing a weight sensing circuit according to the present invention.

제4도 (가) 및 (나)는 본 발명에 의한 중량센서의 출력특성도.4 (a) and (b) are output characteristics of the weight sensor according to the present invention.

제5도는 본 발명에 의한 중량검출장치의 중량감지 제어흐름도.5 is a weight detection control flow chart of the weight detection apparatus according to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1 : 캐비티2 : 트레이1: Cavity 2: Tray

3 : 샤프트10 : 중량감지센서3: shaft 10: weight detection sensor

11a, 11b : 감압저항체12a, 12b : PE필름11a, 11b: pressure-sensitive resistors 12a, 12b: PE film

13a, 13b : 보호판20 : 메인PCB어셈블리13a, 13b: protection plate 20: main PCB assembly

21 : 마이컴26 : 중량감지부21: microcomputer 26: weight detection unit

Rref: 기준저항R ref : reference resistance

Claims (3)

전자렌지에 있어서, 압력에 의해 저항치가 가변되는 감압 저항식 중량센서(10)를 트레이 위에 올려지는 조리물의 중량에 의거하여 샤프트를 통해 압박 받을 수 있도록 캐비티 하부에 설치하고, 그 중량센서(10)의 감압 저항체를 도선으로 인출하여 메인 PCB어셈블리(20)상에서 전원전압(VDD)과 타단이 접지된 기준저항(Rref) 사이에 직렬접속하고, 그 접속점의 출력전압을 전자렌지의 마이컴(21)이 읽어들여 중량값으로 환산하도록 이루어진 것을 특징으로 하는 전자렌지의 중량감지장치.In a microwave oven, a pressure-sensitive resistive weight sensor 10 whose resistance is changed by pressure is installed in the lower part of the cavity so as to be pressed through the shaft based on the weight of the food placed on the tray, and the weight sensor 10 Lead-out the reduced-resistance resistor of the wire and connect in series between the power supply voltage (V DD ) and the other end grounded reference resistor (R ref ) on the main PCB assembly (20), and the output voltage of the connection point of the microcomputer (21) A weight sensing apparatus for a microwave oven, characterized in that configured to read) into a weight value. 제1항에 있어서, 상기 감압저항식 중량센서(10)는, 두장의 PE필름(12a),(12b)에 각각 압력 변화에 의거하여 저항치가 가변되는 감압 저항체(11a),(11b)를 소정 두께씩 인쇄하고, 그 감압 저항체(11a),(11b)가 맞대어지게 포개어 그 PE필름(12a)(12b)의 상하부에 탄성 복원력이 좋은 보호판(13a),(13b)을 대고 양측부에서 스크류등으로 고정시켜 이루어진 것을 특징으로 하는 전자렌지의 중량감지장치.According to claim 1, wherein the pressure-sensitive resistive weight sensor 10, the two PE film (12a, 12b), respectively, the pressure-sensitive resistors (11a, 11b) of the resistance value is changed based on the pressure change, respectively. Printed by thickness, and the pressure-sensitive resistors 11a and 11b overlap each other, and the protective plates 13a and 13b having good elastic restoring force are placed on the upper and lower portions of the PE films 12a and 12b. Weight sensing device of the microwave oven, characterized in that made by fixing. 제1항에 있어서, 상기 마이컴(21)은 A/D포트(A/D1)를 통해 읽어들인 중량감지 전압(Vout)에 의거하여 중량데이타 롬에 미리 저장시킨 룩업 테이블로부터 해당되는 중량값을 읽어서 램에 저장하고 중량감지를 완료하도록 이루어진 것을 특징으로 하는 전자렌지의 중량감지장치.The microcomputer 21 of claim 1, wherein the microcomputer 21 calculates a corresponding weight value from a look-up table previously stored in a weight data ROM based on a weight sensing voltage V out read through the A / D port A / D1. Weight detection device of the microwave oven, characterized in that made to read and stored in the RAM and complete the weight detection. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940013938A 1994-06-20 1994-06-20 Weight checking device of microwave oven KR0125724B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940013938A KR0125724B1 (en) 1994-06-20 1994-06-20 Weight checking device of microwave oven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940013938A KR0125724B1 (en) 1994-06-20 1994-06-20 Weight checking device of microwave oven

Publications (2)

Publication Number Publication Date
KR960001631A true KR960001631A (en) 1996-01-25
KR0125724B1 KR0125724B1 (en) 1997-12-26

Family

ID=19385668

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940013938A KR0125724B1 (en) 1994-06-20 1994-06-20 Weight checking device of microwave oven

Country Status (1)

Country Link
KR (1) KR0125724B1 (en)

Also Published As

Publication number Publication date
KR0125724B1 (en) 1997-12-26

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