基于51单片机控制的GPRS模块，主要功能是检测三相交流电的的工作情况，用交流互感器检测三相的电流变化，传给单片机，单片机通过串口控制GPRS模块发送信息，这时可以了解电机的工作情况-Based on 51 single-chip control of the GPRS module, the main function is to detect the work of three-phase alternating current, AC three-phase current transformer detects changes, passed the microcontroller, the microcontroller through the serial port control GPRS module to send messages, then you can understand the motor work