DEVICE FOR DETECTING PLUGGING STATE OF ELECTRICAL CONNECTOR, AND RECEPTACLE AND PLUG OF ELECTRICAL CONNECTOR

摘要

Disclosed are a device for detecting a plugging state of an electrical connector, a receptacle of an electrical connector, and a plug of an electrical connector. The device for detecting a plugging state of an electrical connector comprises a power input port (Vn), a power output port (Vo) electrically connected to an electrical connector, at least one detection terminal (20) used for detecting a ground signal sent by a ground pin (10) of the electrical connector, a ground signal detection circuit (1) used for outputting a control signal according to the ground signal, and a switching circuit (2) used for triggering, according to the control signal, connection of the power input port (Vn) and the power output port (Vo). The device for detecting a plugging state of an electrical connector can detect whether a receptacle of the electrical connector and a plug of the electrical connector are well plugged, and can protect a system circuit of an apparatus provided with the receptacle of the electrical connector, and an apparatus provided with the plug of the electrical connector.