Design of Digital Voltage Meter Based on MCU
Abstract: This paper puts forward a kind of Digital Voltage Meter that can measurement of AC and DC voltage, temperature detection function, and LCD display module. The system includes five parts of the Voltage preprocessing module, True Root Mean Square conversion module, MCU control module, and LCD display module. And it can in accordance with the actual AC voltage input range corresponding to complete conversion. In addition to the voltmeter is both temperature and time display function, and can realize remote monitoring of the voltage and the PC communication. This paper introduces the software and hardware system components circuit, and to explain the various program module of Keil compiler design process and Proteus simulation test of hardware circuit.This Voltage meter design has the characteristics of small size, high precision, simple operation etc.Suitable for daily measurements and industrial measurement.
Key words: ADC0832; Analog switches; AT89S52; DS18B20; Proteus simulation
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