Abstract
With the scientific and technological progress, the equipment is used more and more, ensured normal and safe operation of the equipment is important. Quality of electrical network will have a greater impact to equipment. Measured each parameter by electrical network, convenient for real-time monitoring and protection equipment. Researched the electrical parameters of measurement circuit is necessary.
The project uses voltage and current mutual inductors to construct signal transition circuit. dsPIC30F6012 which produced by Microchip Company is the main-control chip. Calculated the voltage, current, active power, harmonics, and so on by voltage and current parameters of the collection and processing conversion. Parameters used LCD display. System is communicated with the PC by RS232 or RS485 communication interface. It adopts unite hardware and software. It makes hardware circuit easier, enhances reliability of system and increases stability. Software designing adopts modular. The system which includes measuring, controlling, displaying and other function has the characteristics of multi-function, it must good used in the production.
Keywords: Electrical Parameters’ Measuring, dsPIC, FFT, LCD, Communication
