Multifunctional data power harmonic acquisition module

The utility model discloses a multifunctional data power harmonic acquisition module. The device comprises a microcontroller U9 of which the model is STM32F103, the 485 communication circuit is connected with a serial port PA10 and a serial port PA9 of the microcontroller U9; wherein the memory circuit and the operation monitoring circuit are connected with the microcontroller U9; the real-time clock module is connected with a serial port PB9 and a serial port PB8 of the microcontroller U9; wherein the acquisition circuit is connected with the microcontroller U9 and used for acquiring voltageand current data of a circuit line, and the power supply circuit is respectively connected with the microcontroller U9, the 485 communication circuit, the memory circuit, the operation monitoring circuit, the clock module and the acquisition circuit. According to the technical scheme, the electric power consumption online monitoring device has the advantages of simple structure, complete functions, accurate detection and