摘要
本设计为"倒车防撞雷达的设计",是对时差超声波测距理论的进一步研究和实现。设计中应用了现在流行的单片机技术,增加了系统得可靠性和扩展性。超声波测距的应用已非常广泛,在传统的超声波测距中,不论方式如何,其原理都是通过记录超声波从发射到接收到的时间间隔t,根据公式s=ct(异地收发)或s=ct/2(同地收发)来计算被测距离的。这种方法存在这许多弊端。本设计提出的基于时差的测距方法却对超声波的发射时间没有任何要求,只要能保证接收器接收到超声波信号即可。再根据人机工程,在系统中配以语音系统的辅助,使得雷达系统更完善。
The design for reversing anti-collision radar is a further study and implementation of time difference in the theory of ultrasonic ranging. The microcontroller technology which is quite popular now is applied in the design to increase the reliability and scalability of the system. Ultrasonic Ranging are used widely now. In the traditional Ultrasonic Ranging, no matter what is the method, the principle is to record the time interval between launch and received according to the formula s = ct （remote transceiver）, or s = ct / 2 （with the send and receive） to calculate the distance measured. There are a number of drawbacks in this approach. However, there is no requirement to launch time in this design, as long as the receiver can receive ultrasonic signals. Then according to ergonomics, with the assistance of voice-assisted system, the radar system will be bettered in this way.
出处
《微计算机信息》
2010年第26期27-28,33,共3页
Control & Automation
关键词
时差
超声波
倒车系统
单片机
Time difference
ultrasonic
reversing system
MCU
