Abstract: In order to meet the experimental requirements of artificial intelligence and robotics application courses to support experimental device,an automatic judgment of smart car competition platform is developed.Based on the optoelectronic sensor and high resolution camera,the tracking of the smart car can be transferred to PC.The travelling path,walking distance,consuming time and all kinds of data can be gathered together,and final score is given which was based on these information.The device has the advantages of small size and light,simple and reliable,easy to use and less maintenance.