Multi-station onboard relay service life test bench

A multi-station onboard relay service life test bench belongs to the technical field of electrical element detection and comprises an upper computer, a main control board, an action board, a 24v switching power supply, a 5v switching power supply, a load power supply and a Hall sensor, the main control board is connected with corresponding contacts of the action board through a connector of the main control board, and a relay is connected with the main control board through an action board socket. The output end of the 24v switching power supply and the output end of the 5v switching power supply are respectively connected with a port of the main control board connector, an output port + of the load power supply is connected with the main control board connector, and an output port-of the load power supply is connected with the main control board connector through an induction coil of the Hall sensor. The test board can automatically test the mechanical life and the electrical life of a plurality of onboard r