基于单片机的量程转换数字电压表设计

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.

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