Portable detection system and detection method for stone impact resistance of vehicle body finish paint coating

The invention discloses a portable vehicle body finish paint coating stone impact resistance detection system and detection method, and belongs to the technical field of impact resistance detection, the portable vehicle body finish paint coating stone impact resistance detection system comprises a filling cylinder and a compressed air release device connected with the filling cylinder, the upper end of the filling cylinder is provided with a batcher, and the batcher is used for placing broken stones or cast iron; the controller is connected with a switch of the batcher and a release device of the batcher, and the switch of the batcher is used for controlling opening and closing of the batcher; the release device of the batcher is used for releasing broken stones or cast iron particles in the batcher; a particle outlet is formed in the end part of the filling cylinder; the compressed air release device is used for providing compressed air, and the compressed air passes through the gravel or cast iron filling c