Automobile Anti Collision Alarm System Design Based on MCU
Abstract: This paper introduces a kind of automobile rear-end collision prevention alarm system based on single-chip microcomputer control. The system uses AT89C51 to control the timer generate ultrasonic pulse and timing, DS18B20 collecting temperature to compensate for speed of sound, and then through the single-chip microcomputer processing, calculate the distance. Finally using the LCD real-time display distance and temperature, and according to distance judgment dangerous degree issued a warning signal. The experimental results show that the system of limited distance measurement with high precision, real-time display and alarm function, to a certain extent, has anti collision warning role, improve the driving safety.
Key Words: AT89C51; Ultrasound; LCD display; Temperature compensation; The rear-end collision warning system
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