ionship between them, the total design scheme of the system is available.Р2.4 design of basically has the following several modulesРInformation collection modules: information collection part posed of photoelectric detection and operation amplifier module, photoelectric detection were tracing test and speed test of two parts. Will detect the signal after budget amplifier lm324 amplification module plastic for SCM processing, its core part is several photoelectric sensor.РControl processing module, processing module is a stc89c52 MCU as the core, the microcontroller will be collected from the information after the judgement, in accordance with the predetermined algorithm processing, the processing results to the motor driver and liquid crystal display module, makes the corresponding action.