数字安时表的设计  

The Design of Digital Ampere Hour Meter

作　　者：王玲芝[1] 

机构地区：[1]西安邮电学院自动化学院,陕西西安710121

出　　处：《仪表技术》2011年第10期58-60,63,共4页Instrumentation Technology

摘　　要：设计了以89C51、ADC0809为核心的数字安时表。首先采用线性变换将模拟电流信号转换为电压信号,利用ADC0809将电压转换成二进制的数字量后输入到单片机中。通过软件编程计算电流和时间的乘积来实现安时值,最后输出到LED数码管显示出来。仿真实验表明,该数字安时表设计容易,显示直观,实现了安时值的计算和精确显示。A digital ampere hour meter is designed in which 89C51 and ADC0809 is its core.Firstly,the analog current is converted into voltage signal through liner transformation,then the voltage is converted into binary digital quantity by ADC0809,and the digital quantity is put into single chip.The multiply of current and time is calculated through software program,obtaining ampere hour value,which is put out to display on LED digital tube.Simulation experiments show that the digital ampere hour meter is easy to design and is direct to display,achieving the calculation and accurate display of ampere hour value.

关 键 词：数字安时表 SCM ADC0809 LED数码管 

分 类 号：TM932[电气工程—电力电子与电力传动]