Cooling fin size and flatness online automatic measurement device and measurement method thereof

The present invention belongs to the technical field of electronic measurement device, and especially relates to a cooling fin size and flatness online automatic measurement device and a measurement method thereof. The device comprises a cabinet, the cabinet is provided with a synchronous conveyor, a displacement sensor and a secondary light source are arranged in parallel at two sides of the upper portion of the synchronous conveyor, a detection imaging system is arranged at the top portion of the cabinet corresponding to the synchronous conveyor, and the synchronous conveyor, the displacement sensor, the secondary light source and the detection imaging system are electrically connected with a processing system; and the method comprises the steps of: employing the displacement sensor to perform flatness detection and employing the detection imaging system to perform size detection. The cooling fin size and flatness online automatic measurement device and the measurement method thereofcan achieve automatic detection of the cooling fin size and flatness on the production line, are fast in speed and high in accuracy, cannot generate leak detection and facilitate improvement of product quality.