Monitoring circuit for monitoring protective ground connection in vehicle charging interface of vehicle

The invention relates to a monitoring circuit for monitoring a protective ground connection in a vehicle charging interface of a vehicle. The invention relates to a monitoring circuit (305) for monitoring a PE (113) connection in a vehicle charging interface (300) of a vehicle (200). The vehicle (200) is at least partially electrically driven. The monitoring circuit (305) is connected to a first line (308) of the communication circuit (303). The monitoring circuit (305) and the communication circuit (303) are separate circuits. The monitoring circuit (305) includes a current source (313), a current measurement unit (315), and the PE connection (113). The current source (313) is adapted to generate a current flowing through the monitoring circuit (305). The current measurement unit (315) is adapted to measure a current flowing through the monitoring circuit (305) and thereby monitor the PE connection (113). 本发明涉及监测交通工具的交通工具充电接口中的保护接地连接的监测电路。本发明涉及一种监测电路(305)，该监测电路用于监测交通工具(200)的交通工具充电接口(300)中的PE(113)连接。该交通工具(200