摘要
介绍了一种基于MSP430单片机的智能数字电压表设计。分析了电压测量原理、设计了硬件电路和软件。该表测量频率范围0～10MHz,测量电压范围0～500V,输入阻抗大于22MΩ,分辨率12位。能自动完成量程选择、零点/满量限校正、测量正弦波/三角波/方波的有效值,以及直流电压。操作仅用两次按键,使用非常方便。数据由单片机开发板自带LCD显示。
A smart digital voltmeter design based on MSP430 MCU was introduced,including the analysis of the voltage measurement principle,and the design of electronic circuit and software.The voltmeter boasts of 0-10MHz frequency,0-500V voltage and over 22MΩ input resistance as well as a 12-bit resolution.The voltmeter can select the measurement range automatically,and calibrate zero/full-scale and measure effective value of sine wave/triangle wave/rectangular wave and DC voltage.The measurement results can be displayed on LCD situated on MCU development board.
出处
《化工自动化及仪表》
CAS
北大核心
2011年第3期297-300,共4页
Control and Instruments in Chemical Industry
