车辆超声测速仪.doc

车辆超声测速仪.doc车辆超声测速仪
班敬轩•李岁劳•陈 淑•周 博
(西北工业大学自动化学院•陕西 西安710129)
Speedometer of Vehicle Based on Doppler
BAN Jingxuan. LI SuilaoXHEN Shu,ZHOU Bo
(School of Automation♦ Northwestern Polytcchnical University♦ Xi 'an 710129,China)
/d = A — /o =
2vcosaJ \
摘要：为车辆超声测速仪的硬件设计、制作、调 试和实验•研制出了 一台车辆超声测速仪原理样 机。设计了采用TMS32OF28O35为主控制器的超 声波测速仪各部分的硬件电路并对硬件电路进行 调试•最后用跑车实脸验证了设计方案的可行性。
关键词：多普勒效应；超声波；测速仪
中图分类号:TP368 文献标识码：A 文章编号：1001 -2257(2015)10-0048-03 Abstract: The paper includes the vehicle speed ornetcr ultrasound hardware design ・ product io testing and cxpcrinicntation, the target is to dcvel op a prototype vehicle ultrasound velocimetry. Designing every part of a ultrasonic velocimetry hardware circuit using FMS320F28035 and testing prototype hardware circuit. Using ultrasound vclocim- dry to perform car speedometer expcrimeni. The experimental results showed that: vehicle vclocim ctry meets basic design re(iuirerncnts.
Key words： dopplcr effect; ullrasonic;spccdoni ctcr
0引言
传统的速度表或里程仪、全球龙位系统(；PS和 惯性加速度计是当前测就汽车速度的主要方式•但 是存在受环境影响大、易受干扰等缺点因此•迫 切需要研究和J•找氏他方法精确