文献类型：期刊文献

中文题名：电容式液位传感器的设计

英文题名：Design of a Capacitive Liquid Level Sensor

作者：李一峰[1];吴振陆[1];樊海红[1]

机构：[1]广东海洋大学信息学院,广东湛江524088

年份：2015

卷号：35

期号：1

起止页码：90

中文期刊名：广东海洋大学学报

外文期刊名：Journal of Guangdong Ocean University

收录：CSTPCD

基金：广东省科技攻关项目资助(2011B010300016;2012B010300023);广东省海洋与渔业局项目资助(A201301D04)

语种：中文

中文关键词：电容式液位传感器;555定时器;多谐振荡电路;频率转换

外文关键词：Capacitive liquid level sensor; 555 timer; Multi-oscillator circuit; frequency conversion

中文摘要：设计了一种基于单片机的电容式液位传感器,主要由单片机系统、555定时器、液晶显示屏组成。单片机作为主要控制的部分,控制系统所有的部分,接收555定时器方波信号并读取出其频率,将频率转换成液位高度,显示到LCD1602液晶显示屏幕上,软件计算液位高度,减小了电容与频率转换的线性误差,最终实现算法的设计。

外文摘要：Capacitance type liquid level sensor based on single chipwas designed. The system consists of single-chip microcomputer system, 555 timer, LCD screen. Single chip microcomputer, as the main control part, control all part of the system, receive a 555 timer square wave signal and read out the frequencywhich is transformedinto the height of liquid level and is displayed on the LCD1602 liquid crystal screen.The liquid level height is calculated by software, by reducing the linearity error of capacitance and frequency conversion,and finally the algorithm is designed.