基于单片机的三相多功能电表设计

THE DESIGN ON THREE -PHASE POWER MULTIMETER BASED ON THE INTEGRATE CIRCUIT

三相电早已深入到人们社会生活的方方面面，笔者从硬件电路设计，软件程序设计等多方面设计基于ATT7022B芯片的三相电多功能电表．实现对三相电电压，电流，有功电能，无功电能，有功功率，无功功率，电网频率，相序等多个三相电参数的测量，并通过485通信实现远程监控功能．具备时钟与存储功能，实现了参数的实时记录．该表的非线性测量误差小于0．1％．

The three - phase power has already penetrated into every aspect of people~ social life. The paper designs a three - phase power muhimeter which is based on the ATIT022B chip using the hardware circuit , software programming and many other aspects of designs. The three - phase power multimeter designed in this paper can measure many three -phase power parameters, such as voltage , electric current, active energy, reactive energy, active power, reactive power, grid frequency, phase sequence and can achieve RMON functions through 485. It also has a clock function, storage capabilities and can achieve real - time recording of parameters. The nonlinear measurement error is less than 0.1%.