Current detecting device

The utility model provides a current detecting device which the structure is: three phase current floats precision resistor through low temperature respectively behind current transformer be voltage signal with electric current signal conversion, VIA, VIB, VIC three routes voltage signal is behind the filtering protection circuit, three voltage passageway with the electrical measurement chip links to each other respectively, microcontroller's GPIO interface is connected with the SPI interface pin of electrical measurement chip, does signal among the microcontroller pass through UART interface outlet to RS in 485 communication unit (6), do you and pass through RS 485 the bus out is to the host computer in. The utility model discloses also can keep higher response speed when can guaranteeing the filtering effect always to this hardware platform simple structure, make the less and safety of price and stability can be good. 种电流检测装置，其结构为：三相电流分别经过电流互感器后通过低温漂精密电阻将电流信号转换为电压信号，VIA、VIB、VIC三路电压信号经过滤波保护电路后，分别与电量测量芯片的三个电压