传感技术学报2017，Vol.30Issue(2)：184-188,5.DOI:10.3969/j.issn.1004-1699.2017.02.003
基于脉宽调制的传感器读取电路设计与实现
Design and Implementation of a PWM Based Sensor Readout Circuit
摘要
Abstract
A novel sensor readout circuit is developed by improving the traditional PWM(Pulse Width Modulation) circuit.In the novel circuit,duty cycle and frequency synchronous modulation are adopted instead of duty cycle modulation.In the process of signal transmission,two input voltage signals can be modulated onto a PWM signal.The voltages of two input signals can be retrieved by demodulating the PWM output.Experimental results show that the PWM duty cycle and frequency of the proposed circuit have good linear relationship with the two input voltage signals,respectively.And the signal conversion accuracy reaches to 0.34% and 0.26%,respectively.In addition,the proposed circuit has advantages of a strong anti-interference ability,high conversion accuracy and low cost,which is more suitable for sensor signal processing and pickup.关键词
脉宽调制/传感器/信号读取/测量/电路设计Key words
pulse width modulation/sensor/signal readout/measurement/circuit design分类
信息技术与安全科学引用本文复制引用
龙军,关威,汪旭东,陈君..基于脉宽调制的传感器读取电路设计与实现[J].传感技术学报,2017,30(2):184-188,5.基金项目
十二五民用航天项目(E020415) （E020415）
