555集成电路构成的电容物位测量电路  

A Capacitor Matter Level Measure Circuit Based on 555 Integrated Circuit

作　　者：王新辉[1] 

机构地区：[1]长沙大学,湖南长沙410003

出　　处：《电气自动化》2004年第3期67-68,共2页Electrical Automation

摘　　要：本文介绍一种以555时基集成电路构成的电容式物位测量电路,由电容感受物位的高低,产生电容量的变化,用555多谐振荡电路将测量到的电容变化转换为脉冲宽度的变化,再通过单片机定时器测出脉冲宽度。传感器既可本地显示测量数据,又具有数据远传的功能。The paper introduces a kind of capacitor matter level measure circuit based on 555 time base integrated circuit, the capacitor senses matter level and changes its electric capacity, the surging pulse-width of 555 integrated circuit is changed according to the electric ca- pacity varieties, and the surging pulse-width may be measured by timer of single-chip computer. This sensor circuit may display measure data and may transfer the data far away.

关 键 词：电容 传感器 555时基电路 物位测量 

分 类 号：TM930.111[电气工程—电力电子与电力传动]