Energy self-consistent device for vehicle-mounted detection and detection method

The invention discloses an energy self-consistent device for vehicle-mounted detection and a detection method, belongs to the technical field of mechanical design and signal analysis, and effectively solves the technical problem that the running state of a train cannot be sensed when no power supply exists. Comprising an annular belt, a shell, an inner cover, a main shaft, a rotating assembly, an energy conversion ball and a rotor, the top of the shell is open, a center through hole is formed in the center of the bottom of the shell, a center through hole is formed in the inner cover, and the main shaft penetrates through the center through hole of the inner cover; a plurality of compartments distributed in the circumferential direction of the central axis of the main shaft are formed between the shell and the rotor, an energy conversion ball is arranged in each compartment, the annular belt is installed on the inner wall, corresponding to the horizontal position of the rotor, of the shell, and the main shaft