申 莉,毕 伟,甘依依,陆 俊,彭 匀,王现伟.用于三相标准电能表的高精度数据采集系统[J].电测与仪表,2015,52(18):. SHEN Li,BI Wei,GAN Yi-yi,LU Jun,PENG Yun,WANG Xianwei.High Precision Data Acquisition System for Three-Phase Standard Energy Meter[J].Electrical Measurement & Instrumentation,2015,52(18):.
用于三相标准电能表的高精度数据采集系统
High Precision Data Acquisition System for Three-Phase Standard Energy Meter
Wide range fluctuation load leads the traditional electric energy meter have large measurement uncertainty. This paper designed a high precision data acquisition system for three-phase standard energy meter. The system is consisted by FPGA and high precision data acquisition circuit. The high precision data acquisition circuit is combination by signal modulate circuit and 24 bit A/D converter in which the sampling rate is up to 52.73 kHz, these meet the requirement of acquisition precision. The system is test by acquire DC voltage, and the error is less than 0.02%.
