基于ARM7的视频测速方法研究

The Video Speed Measuring Method Based on ARM7

以运煤列车喷洒抑尘剂计量需要测量运行速度为研究背景,提出视频测速解决方案。视频测速系统主要包括ARM7芯片、单个摄像头、液晶显示部分。视频测速方法,以车厢边缘轮廓为特征点。对含有车厢轮廓的图像进行二值法处理。根据特征点在抓拍图像中移动的像素点的个数,计算出列车实际运行的距离,从而计算出列车速度。该技术具有抗电子干扰、精确度高、成本低、灵活性能突出等优点。

According to the movement characteristics of the coal trains, we adopt the method of video speed measuring method. Video speed measuring system mainly includes the ARM7 chip, a single camera, liquid crystal display part. Video speed measuring method is characterized by coal train edge contour points. To process the image containing train contour binary. According to the feature points in the move by the number of pixels of the image, we compute the distance of the train operation, and then compute the speed of the train. The method has good electrical interference, high accuracy, low cost, flexible performance, etc.