Along with the development of science and technology， intelligent and automation technology is more and more popular， all kinds of hi-tech also widely used in intelligent robot toy car and manufacturing field， make intelligent robot more and more Intelligent car is a variety of high-paying technology integration body， it incorporates mechanical， electronic， sensors， computer hardware， software， artificial intelligence and many other subject knowledge， can involves many of today's current areas of This car design mainly by the single chip microcomputer control system module， manostat module， motor driver module， infrared inspection module and to the wireless digital module composition， system to C8051F340 microcontroller as the core， set to foreign control， use linear regulator chip to voltage stability of control for single chip microcomputer and other peripherals for the reliable power supply， using infrared to the module black and white signal detection， use L298N motor driver module to the dc speed-down motor stability control， use light coupling strength chips for electrical isolation of control， eliminate interference， the use of wireless digital module CC1101 for two car The intelligent design two cars are from the start to car， overtaking alternately lead， lead a circle overtaking about 27 Key words: C8051F340 infrared to the dc speed-down wireless digital overtaking lead
