KR930018278A

KR930018278A - Battery voltage detection circuit

Info

Publication number: KR930018278A
Application number: KR1019920002408A
Authority: KR
Inventors: 김만섭
Original assignee: 김영수; 삼성전자 주식회사
Filing date: 1992-02-18
Publication date: 1993-09-21

Abstract

전지와 접지 사이에 직렬로 연결되어 전지의 전압을 검출하는 분배 저항쌍과, 전원전압에 저항을 거쳐 연결되어 애널로그-디지틀 변환부에 기준전압을 제공하기 위한 제너 다이오드와, 분배 저항쌍의 접속점에 애널로그 입력단자가 연결되고 제너 다이오드에 기준전압 단자가 연결되어, 마이크로 컨트롤러의 제어신호에 따라 애널로그 입력신호를 디지틀 신호로 변환하여 출력하는 애널로그-디지틀 변환부와, 어댑터 입력신호선과 서스팬드 신호선과 리즘 신호선과 전원스위치 신호선에 입력단자가 연결되고, 애널로그-디지틀 변환부의 디지틀 데이터 출력단자와 읽기 입력단자와 쓰기 입력단자와 칩선택 입력단자에 서로 연결되어, 애널로그-디지틀 변환부에 의해 세밀하게 검출된 전지전압에 따라 정상 모드, 저전압 모드, 최저전압 모드, 서스팬드 모드, 차단 모드로 동작하는 마이크로 컨트롤러 구성되어, 전지의 전압을 세밀하게 검출함으로써 출력신호의 오차를 줄일 수 있고 또한 서스팬드 모드에 리즘 동작을 통해 정상 모드가 될 수 있는 기능을 가진 전지전압 검출회로에 관한 것.A pair of distribution resistors connected in series between the battery and ground to detect the voltage of the battery; a zener diode connected to the power supply voltage through a resistor to provide a reference voltage to the analog-digital converter; and a connection point of the distribution resistor pair. An analog input terminal connected to the zener diode and a reference voltage terminal connected to the zener diode, and an analog-to-digital converter for converting the analog input signal into a digital signal according to the control signal of the microcontroller, and an adapter input signal line The input terminal is connected to the span signal line, the rhythm signal line, and the power switch signal line, and is connected to the digital data output terminal, the read input terminal, the write input terminal, and the chip select input terminal of the analog-digital conversion section, and the analog-digital conversion Normal mode, low voltage mode, lowest voltage mode, suspend, depending on the battery voltage detected by the The microcontroller is configured to operate in the shut-off mode, and it can detect the battery voltage in detail and reduce the error of the output signal, and also detect the battery voltage with the function to be in the normal mode through the rhythm operation in the suspend mode. About the circuit.

Description

Battery voltage detection circuit

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

제1도는 이 발명의 실시예에 따른 전지전압 검출회로의 상세 회로도이고, 제2도는 이 발명의 실시예에 따른 전지전압 검출회로의 동작 상태도이다.1 is a detailed circuit diagram of a battery voltage detection circuit according to an embodiment of the present invention, and FIG. 2 is an operation state diagram of the battery voltage detection circuit according to an embodiment of the present invention.

Claims

A pair of distribution resistors connected in series between the battery and ground to detect the voltage of the battery; a zener diode connected to the power supply voltage through a resistor to provide a reference voltage to the analog-digital converter; and a connection point of the distribution resistor pair. An analog input terminal connected to the zener diode and a reference voltage terminal connected to the zener diode to convert the analog input signal into a digital data signal according to the control signal of the microcontroller, It is connected to the input terminal, the write input terminal, and the chip select input terminal to the suspend signal line, the rhythm signal line, and the power switch signal line, and according to the battery voltage detected by the analog-digital converter, the normal mode, the low voltage mode, It consists of a microcontroller operating in the lowest voltage mode, suspend mode, and shutdown mode. A battery voltage detection circuit.

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