The design of simple intelligent tracing the car (tracing is to point to the small car in the white floor walk. Usually take to follow the black line is the method of infrared detection method), used for testing AT89S52 SCM control core. Use of three high sensitivity of infrared reflecting photoelectric sensor, the black road to track detection. Use the car in front of the infrared sensor test track on the road, road surface message to AT89S52 devices, AT89S52 devices according to the information reaction control motor rotation, so as to control the car on the way of running according to track. In addition, intelligent vehicle control system of the circuit module need different working voltage and current capacity each are not identical. Chip need to provide 5 V working voltage, and the voltage motor for 9 V, this design is used in 9 V power supply, through the LM7805 voltage stabilizer three will voltage transform for 5 V voltage supply circuit system. Therefore, the system is composed of electrcal sensor, microcontroller and drive units joint action by the three LM7805 convert module regulators required voltage, keep the small car in the predefined driving on the track. The whole system of the circuit structure is simple, reliable performance and is easy to realize high, are highly intelligent, and human nature, partly reflects the intelligence. The test results meet the requirements, the paper introduces the system hardware design methods and test results.
The adopted technology of the car main sensor effective application and the use of AT89S52 chip. Have many functions can continue to expand, deserves further study and research.