基于DSP的实时互相关测速系统设计与实现  

Design and implementation of the DSP-based real-time speed measurement system by the cross-correlation method

作　　者：刘晓杰[1] 宋占伟[2] 张旻[1] 

机构地区：[1]江苏技术师范学院,江苏常州213001 [2]吉林大学,吉林长春131012

出　　处：《微型机与应用》2011年第14期90-92,共3页Microcomputer & Its Applications

基　　金：吉林省科技支撑计划重点项目(20100314);校博士启动基金项目(KYY09008)

摘　　要：根据相关测速原理,利用相关差值法的信号处理方法,设计一种基于DSP的非接触式智能实时测速系统。系统采用模拟电路对红外传感器采集的模拟信号进行处理,利用DSP强大数据处理能力实现对信号数字化采集、运算处理和结果显示等功能。实验测试结果表明,系统测量误差较小,结构简单,稳定性高,抗干扰性强,测速范围较宽。According to the cross-correlation principle of vehicle speed measurement,the intelligent non-contact speed measurement system in real-time based on DSP is designed,which is on the basis of the cross-correlation signal processing method.The analog circuit is applied in this system to sample and process the signal of the infrared sensors.To utilize the powerful data processing capability of digital signal processor（DSP）,the system functions are finished,which include the signal digitization sampling,the data processing,the results display,and etc.It is shown by experimental results that the speed measurement error of system is small.The system has some advantages,such as the simple architecture,high stability,well noise immunity capacity,wide speed measuring range.

关 键 词：速度测量 相关理论 峰值搜索 DSP 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]