Non-intrusive electric appliance identification method and system, medium, equipment and terminal

The invention belongs to the technical field of household electrical appliance identification, and discloses a non-intrusive electrical appliance identification method and system, a medium, equipment and a terminal, and the method comprises the steps: synchronously sampling the current of an electrical appliance through a current transformer and a voltage zero-cross detection circuit; the MCU is used for processing the synchronous sampling current data to obtain parameters of the fundamental wave phase of the current, the amplitude ratio of each harmonic to the fundamental wave and the energy ratio, and the current parameters are used for calculating the characteristic quantity of each electric appliance; dynamic characteristic values are extracted from changed data, the types of the changed electric appliances are judged, and the types and the number of the current electric appliances are intelligently recognized by combining accumulation and CUSUM. The method integrates low cost, low power consumption and h