基于STC11F02E的超声波倒车雷达设计与实现

Design and Implementation of the Ultrasonic Car-backing Sensor Based on STC11F02E

文章针对现有市面上倒车雷达产品性价比不高、测距范围窄、测距精度不高的情况，介绍了一款以单片机STC11F02E为核心，通过模块化设计的超声波倒车雷达系统的设计，给出了硬件设计各单元具体电路图，软件主要模块的流程图，并对实验结果进行了详细分析。经测试结果表明，该倒车雷达系统的精确测距范围达0．3～6．5m，测距精度小于5cm，且具有制作成本低，稳定性好的特点。

For the status quo of low performance-to-price ratio, narrow measuring range, low measuring precision for the car-backing radar products, through the modular design, the designs and implementation processes of a ultrasonic car-backing radar system based on single chip computer STCI11F02E are introduced in this paper. It gives the hardware design various units circuit diagram, and the software main modules flow chart. Moreover, the experimental results are analyzed in detail. Test results show that in the car-backing radar system, the range of distance measurement is from 0.3m to 6.5m, the accuracy of distance measurement is less than 5cm. Meanwhile, it has the advantages of low cost and good stability.