基于DSP的视频测速系统  

Speed measurement system based on DSP and video

作　　者：王珊[1] 王利[1] 刘琪[1] 

机构地区：[1]中北大学机电工程学院,太原030051

出　　处：《国外电子测量技术》2017年第8期96-99,共4页Foreign Electronic Measurement Technology

基　　金：中北大学研究生科技立项基金项目(20151204)资助

摘　　要：针对现有测速系统成本高且测速方法不能直接用于球类速度测量的问题,设计了基于TMS320C6748的嵌入式测速系统,包含图像的采集、数据处理和数字显示等电路部分。视频传感器记录球场内球体的运动,经过视频解码芯片把模拟输入转换为数字图像输出并传入DSP,对目标球体的圆心和半径检测后经过计算,最后小球的速度通过数码管输出。此系统具有成本低、安装简单、适应场合广泛等特点。实验结果表明,此系统可在有限的精度范围内获知球类的实际运动速度,测速误差控制在8.3%以内。Aiming at the problem that the existing speed measurements system are expensive and the velocity measurement method can not be directly used for the ball speed measurement,an embedded speed measurement system based on TMS320C6748 is designed,which includes image acquisition,data processing and digital display.The video sensor records the movement of the ball in the course,the video decoder chip converts the analog input to the digital image output and passes it to the DSP,the center and radius of the target sphere are calculated and the speed of the ball is outputted through the digital tube.This system has the characteristics of low cost,simple installation and wide adaptability.The experimental result shows that the system can obtain the actual velocity of the ball in a limited accuracy range,and the velocity error is less than 8.3%.

关 键 词：TMS320C6748 速度测量 图像处理 

分 类 号：TN915[电子电信—通信与信息系统]