【正文】 sions with obstacles in the process of exercise. the general conception of puter network teaching websiteUsing 89 c51 as the car39。s control unit, sensor eightway from outside, in the front of the car, as a black belt in the process of the car into the garage detecting element, at the rear end of the car when connected to eightchannel infrared sensors as the car pulled out of the garage of a black belt in detecting element, the LJ18A38 Z/BX inductive proximity switch as garage iron detecting element, the microcontroller after receiving sensor detects the signal through the corresponding procedures to control the car forward, backward, turn, so that the car39。s performance indicators meet the requirements of the design. design ideasIntelligent car is a branch of intelligent vehicle research. It with wheels as mobile mechanism, to realize autonomous driving, so we call it the smart car. Smart car has the basic features of robot, easy to programming. It with remote control car the difference is that the latter requires the operator to control the steering, rev. Stop, and in a more advanced car remote control can control the speed (mon model of the car belongs to this type of remote control car)。 While the smart car can be done by puter programming for the car stop, driving direction and speed control, without human intervention. Operator the smart car can be changed through a puter program or driving some of the data to change its type. This can be controlled through programming, change the way of car driving feature is the biggest characteristic of the smart car. Smart car control system of the research purpose is to make the car drive has higher autonomy. If any given car a path, through the system, the car can get system of path after image processing of data moving and Angle (a), and can travel scheduled path, according to the displacement and Angle information control system structure analysisAccording to the above design idea, the structure of the intelligent car control system can be divided into two layersThe planning layerPC control system, the planning layer provides global information was driving the car, including path processing module and munication module. To solve the basic problem with itUse what tools to deal with the car path graph。Car movement model is established to calculate the data required for car driving。Car movement model is established to calculate the data required for car driving。Behavior layerLower machine control system, the behavior is the underlying structure of the intelligent car control system, realize the realtime control of the car driving, it includes munication module, motor control module and data acquisition module. It is to solve the basic problems are:Receiving, processing, PC sends data information。Design of stepping motor control system。Car displacement and Angle of the information collected, positioning, analysis of error control system。 the total design schemeBy the system structure has the smart car control system of the process:Start AutoCAD drawing, or choose a closed curve as the car path, pick up the car starting $path graphTo choose the path of the graphics processing, make the car turning of edges on the minimum turning radius in circular arc transitionGenerate a new path graphics, simulation of car movement process。Calculate the displacement and driving car need wheel Angle, and then sends the data to the machineUnder the machine after receiving data, through software programming to control the car wheel rotation speed and Angle, so that it is in accordance with the scheduled path forwardA plete control system requirements of the system is closely linked to each function module, according to the order process and the relationship between them, the total design scheme of the system is available. design of basically has the following severa