KR930018083A

KR930018083A - Unbalance detection device of washing machine

Info

Publication number: KR930018083A
Application number: KR1019920002183A
Authority: KR
Inventors: 유현수
Original assignee: 이헌조; 주식회사 금성사
Filing date: 1992-02-14
Publication date: 1993-09-21

Abstract

본 발명은 세탁기의 언발란스 동작상태를 전기적으로 감비하기 위한 세탁기의 언발란스 감지장치에 관한 것으로, 세탁기의 언발란스 동작시 BL DC모터(24)에 흐르는 전류의 변화량을 저항(R₁)으로 감지하는 모터의 전류변화 감지수단과, 상기 저항(R₁)에 흐르는 전류변화를 감비하여 이를 증폭시켜주는 연산증폭기(30)와, 상기 연산증폭기의 출력값을 미분시켜 출력하는 콘덴서(C₂)와, 저항(R₂)으로 구성된 미분회로(32)와, 상기 미분회로의 출력값을 기준전압(Verf)과 비교하여 상기 미분회로의 출력값이 클때 언발란스신호로 출력하는 비교기(31)와, 상기 연산증폭기의 언발란스신호 출력시 이를 소프트웨어적으로 판단해주는 마이콤(35)으로 구성된 것이다.The invention of the motor relates to a washing machine for Diet unbalanced operation state of the washing machine is electrically unbalanced detection device, detects the amount of change in current which flows at the time of unbalanced operation of the washing machine BL DC motor 24, a resistance (R ₁₎ A current change detecting means, an operational amplifier 30 that suppresses and amplifies the current change flowing through the resistor R ₁ , a capacitor C ₂ that differentiates and outputs an output value of the operational amplifier, and a resistor R _A differential circuit 32 composed of ₂ ), a comparator 31 for outputting an unbalanced signal when the output value of the differential circuit is large by comparing the output value of the differential circuit with a reference voltage Verf, and an unbalanced signal output of the operational amplifier. It is composed of a microcomputer 35 that determines the time by software.

Description

Unbalance detector in the washing machine.

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

제3도는 본 발명의 세탁기 제어회로 구성도, 제4도는 본 발명의 모터 S-T곡선 표시도, 제5도는 본 발명의 세탁기 동작에 따른 Vp전압 변화량 표시도, 제6도는 본 발명의 마이콤 제어동작 흐름도.3 is a configuration diagram of a washing machine control circuit of the present invention, FIG. 4 is a motor ST curve display diagram of the present invention, FIG. 5 is a Vp voltage change amount display diagram of the washing machine operation of the present invention, and FIG. 6 is a flow chart of the microcomputer control operation of the present invention. .

Claims

During the unbalance operation of the washing machine, the current change detection means of the motor for detecting the amount of change in the current flowing through the BL DC motor 24 with the resistor R ₁ , and detecting and amplifying the change in the current flowing through the resistor R ₁ . The differential circuit 32 composed of the operational amplifier 30, the capacitor C ₂ for differentiating and outputting the output value of the operational amplifier, the resistor R ₂ , and the output value of the differential circuit are compared with the reference voltage Verf. In comparison, the comparator 31 outputs an unbalanced signal when the output value of the differential circuit is large, and a microcomputer 35 for determining the unbalanced signal when the unbalanced signal is output from the operational amplifier. Device.

2. The unbalance detection window of a washing machine according to claim 1, comprising an LED display element (33) for informing a user of an unbalanced state of the washing machine at the time of outputting the unbalance signal of the comparison (31).

2. The unbalance detection window of a washing machine according to claim 1, wherein the microcomputer (35) counts the number of times the change in current is greater than or equal to the set change, and determines that the count is unbalance if the count is more than the reference number.

※ Note: The disclosure is based on the initial application.