基于电波原理的新型汽车测速系统

Based on the Principle of Waves is New Type of Car Speed Measuring System

绝大多数汽车所采用的车速表为磁电式车速表,该车速表的数据,来源于变速器输出轴或汽车车轴的转速,而不是理论上最直观的位移/时间,当出现车轮非正常纯滚动或车速表自身结构故障时,无法做到准确的测速。本文展现了一种全新测速系统,通过位移/时间的方法,直观准确地测出行驶车辆的速度。研究过程以电波测距为依据,利用安放在行驶车辆上不同位置电波的测距时间差对车速进行求解,并对系统的主体部分做了详细描述和分析。针对一些可能存在的问题对系统做了改良。分析了该新型测速系统的优缺点,并对本文的研究工作进行了总结。

Now most cars speed table for the magnetoelectric speed table, the data from the transmission output shaft of the speed table or car axle rotational speed, the most intuitionistic displacement/time rather than theory, when appear abnormal pure rolling wheels or speed table structure itself fails, it can＇t accurate speed.This paper shows a new velocity measuring system, by using the method of displacement/time, intuitive and accurately measure the speed of the vehicle. Based on radio range, the use of vehicle, mounted on different positions of the waves of ranging time to solve the speed, and has made the detailed description of the main part of the system and analyzed. There may be some problems for system improvement. Analyzes the advantages and disadvantages of the new speed measuring system, and the research work is summarized in this paper.