基于相位相关法的播种机速度监测方法  

Speed Monitoring Method for Sowing Machines Based on Phase Correlation Technique

作　　者：张仕豪 石嘉敏 任守华[1] 王新兵 ZHANG Shihao;Shi Jiamin;REN Shouhua;WANG Xinbing(College of Information and Electrical Engineering,Heilongjiang Bayi Agricultural University,Daqing 163319,China;Agricultural Technology Extension Center of Tangyuan County,Jiamusi 154000,China)

机构地区：[1]黑龙江八一农垦大学信息与电气工程学院,黑龙江大庆63319 [2]黑龙江佳木斯市汤原县农业技术推广中心,黑龙江佳木斯154000

出　　处：《乡村科技》2025年第1期152-158,共7页Rural Science and Technology

摘　　要：为解决不同农业环境下的农用机车在启动时速度变化较大造成的测速精度不高的问题,确保农用机车能在各种复杂场景下进行稳定作业,提出一种基于相位相关法的播种机速度监测方法。该方法将图像采集系统安装于播种机前方,以1 m的高度对待播种土地进行连续定时拍摄。利用二维离散快速傅里叶变换和相位相关法计算相邻帧图像的位移变化,并根据摄像机距离地面高度,计算得到播种机的运动速度。实验结果表明,该方法在播种机机车启动时加速度较大的情况下,能够实现误差小于0.05%的准确、稳定的非接触式实时测量,优于传统的测速方法。To address the issue of inaccurate speed measurement caused by significant speed variations during the startup of agricultural machinery in different farming environments and to en⁃sure stable operation of seed drills in various complex scenarios,a seed drill speed monitoring method based on phase correlation is proposed. This method involves installing an image acquisition system in front of the seeding machine at a height of 1 meter to continuously capture timed images of the land to be seeded. By utilizing two-dimensional discrete fast Fourier transform and phase correla⁃ tion, the displacement changes between adjacent frame images are calculated , and the movement speed of the seeding machine is determined based on the camera ’s height above the ground. Experi⁃ mental results demonstrate that this method can achieve accurate and stable non- contact real-time measurement with an error below 0.05% even when the seeding machine experi⁃ ences high accelera⁃ tion during startup, there by out performing traditional speed measurement methods.

关 键 词：相位相关 二维离散快速傅里叶变换 非接触式速度测量 

分 类 号：S223.23[农业科学—农业机械化工程]