Automatic Parking System Design Based On Ultrasonic And Machine Vision

The automatic parking system is a hot spot in the smart car field. It can park the car automatic within a narrow space. That reduces the burden of parking car for driver. First, this theis researches two core algorithms for automatic parking system, and explain the principles of the algorithms in detail. Reference model car parking spaces and parking spaces line model, which is searched through the ultrasonic and the video analysis respectively, is presented. According to the geometric relationship of the path of the park, the parking procedure is divided into four phases. The parameters of each phase will be calculated.Second, the solution of automatic parking system is presented. The solution contains three units, including sensor signal unit, vehicle control unit, signal processing unit. Finally, a real embedded system, to verify the algorithms and solution, is completed based on an electric model car. The system includes a sensor signal circuit, the car control circuit, the signal processing circuit. For every part of that, detailed hardware and software architecture is explained.Through the test and evaluation for the embedded system, the proposed algorithms and solutions are proved effective.