摘要
针对目前车速监测系统复杂、昂贵的现状,基于磁通门原理设计了一种包括车辆探测、速度计算和数码管显示(或微机处理)的新型车速测量系统。该系统应用磁通门传感器及信号调理电路探测到车辆通过时的信号,运用采样保持电路自动滤除背景干扰磁场以获取计时脉冲信号,然后利用AT89C2051单片机电路计算出车辆速度,通过接口电路及显示系统将数据输出,达到车速测量的目的。经过实验验证,该系统对大型卡车的探测距离为6 m,小型轿车为4 m,速度测量误差为0.28 m/s(1.008 km/h)。该系统可实现微型化,改进后可实现更远距离的测量。
The monitoring system for vehicle velocity is complex and expensive.Based on fluxgate principle,this paper designed a new measurement system,which included vehicle detection,velocity calculation and nixie display or microcomputer process.The fluxgate sensor and signal adjusting circuit detected the vehicle pass signal,and the sample and hold circuit filtered the background magnetic field to receive the timing pulse signal automatically.Then the velocity was calculated with single chip of AT89C2051 and the d...
出处
《仪表技术与传感器》
CSCD
北大核心
2008年第5期96-98,109,共4页
Instrument Technique and Sensor
基金
中北大学校青年基金资助项目
关键词
磁通门传感器
车速
监测系统
单片机
fluxgate sensor
vehicle velocity
monitoring system
single chip
