超声测距测速系统的设计及应用

Study on the design and application of ultrasonic distance measurement system

为加快测距测速安全行车系统的普及,以AT89C52单片机为核心,辅以超声波发射/接收模块、键盘输入模块、温度补偿模块、液晶显示模块和语音报警模块等设计出一款经济型超声测距测速行车安全预警系统.该系统具有实时环境温度检测、计时、测距和测速等功能,并通过对系统误差来源分析,提出针对性策略优化设计,提高了系统的测量精度,使系统具有高性价比、操作便捷和一机多用等优点,可满足机动车辆行驶安全预警的需要.

In order to speed up the popularization of safety driving system with quick distance and speed measurement,an economic ultrasonic distance measurement system was designed with AT89C52 MCU as the core,and with the ultrasonic launching/receiving module,the keyboard input module,the temperature compensation module,the LCD module and the voice alarm module.The system had the functions of real-time environment temperature detection,timing,distance measurement and speed measurement.Through the analysis of the source of the system error,the optimization design of the targeted strategy was put forward,and the measurement accuracy of the system was improved.The system had the advantages of high performance/price ratio,convenient operation and multi-function,which can meet the requirements of vehicle safety early warning.