Intelligent Electrical Parameter Analysis Meter

At present electric power have become an important energy. In the market economy, people reqire high precision of electric energy measurement and long service life of electric energy meter. People reqire intellegent and automatic management of electric power. Full electronic meter will replace the traditional electronic meter. Now there are a majority of traditonal electrical energy meters in the world, the structure and theory restraint their performance. Their shortcomings include small measuring range, poor stability, low accuracy and function singleless. They can not display voltage and current waveform and harmonic analysis diagram. Electrical energy meters available on the market have great measurement range, when they measure small electric current, the accuracy can not be guaranteed. It is difficult to achieve mW measurement and they are very expensive. Therefore they cannot meet the needs of social development.The intelligent electric energy analyzer is composed of STM32and CS5463chip. It can measure voltage, current, power, power factor and other parameters. It can intelligently analyse power. This research designs an instrument with the coupling transformer, so it can program output voltage. Its power loss is extremely small. The parameters is accurate and comprehensive.This study discusses principle of measurement and the analyzer performance design, monolithic construction, hardware circuit design and software program. Hardware circuit design includes power supply design, STM32and CS5463chip hardware circuit design, the keyboard and display circuit design. Program of software discusses the STM32and CS5463chip program design, including the STM32clock configuration, pin configuration, the USART serial port configuration, SPI serial port configuration, ADC conversion function configuration, CS5463chip initialization, numerical analysis function design, waveform display design and harmonic analysis function design. At the end, paper introduces the analyzer calibration, describles the calibration theory and procedure of the CS5463. Finally, calibration experiments show the instrument can reach up to0.5%accuracy and meet the application needs.