基于单片机的量程转换数字电压表设计  

Design of Digital Voltmeter with Range Conversion Based on Single Chip Computer

作　　者：齐祥明[1] QI Xiang-ming(Anqing Vocational and Technical College,Anqing 246003,China)

机构地区：[1]安庆职业技术学院

出　　处：《廊坊师范学院学报（自然科学版）》2019年第4期38-41,共4页Journal of Langfang Normal University(Natural Science Edition)

基　　金：安徽省高校精品资源共享课程项目（2015gxk118）;安徽省高校自然科学重点项目（KJ2016A446

摘　　要：数字电压表设计采用STC89C52单片机为控制核心,分压器加上同相比例运放构成量程转换电路,输出由模数转换器ADC0831处理并通过4位数码管显示,可以测量0-50V的模拟直流输入电压值。阐述了ADC0831模数转换的结构原理,着重设计硬件电路和软件编程。设计简单、功能齐全、信号实时显示、测量精准度和稳定性较高。In this design of digital voltmeter,the STC89C52 single chip computer is the control core,the range conversion circuit consists of a divider and a phase proportional amplifier.Analog digital conversion circuit(ADC0831)and 4-bit digital tube are adopted,the voltmeter can measure the voltage ranging from 0 to 50 volts.The design expounded the structural principle of ADC0831,designed hardware and software.The design is simple and fully functional,it achieves real-time signal display and its measurement accuracy and stability are relatively higher.

关 键 词：单片机 量程转换 ADC0831 数字电压表 

分 类 号：TM933.22[电气工程—电力电子与电力传动]