Air-pressure type electronic parking brake system and method

The invention discloses an air-pressure type electronic parking brake system and method. The system comprises a gas storage cylinder, a hand brake switch and a hand brake gas chamber, wherein the gas storage cylinder is connected with the hand brake gas chamber by gas pipelines. The system also comprises an air-pressure type electronic parking valve and a parking brake controller, wherein the air-pressure type electronic parking valve is connected between the gas storage cylinder and the hand brake gas chamber; and the parking brake controller is connected between the hand brake switch and the air-pressure type electronic parking valve. The system has simple structure and low cost, is conveniently manufactured and can realize automatic control of parking brake. The method based on the brake system is simple in operation, precise in control and safe and reliable.