骨料粒度在线检测系统的实验研究与开发

摘要

Digital image processing is proposed to measure the size of aggregate.Illuminant source commonly has two installation methods,which are front illuminant installation and backlight installation.Aggregate has two motion states,which are lying on the conveyer and falling from conveyer,in production line.A proper illuminant installation is proposed by studying two motion states of aggregate.When shooting the falling aggregate,speed of conveyer,installation angle of conveyer,thickness of aggregate and camera installation height would effect shooting results.Getting optimized parameters by studying the effects of these factors on the aggregate dispersion using EDEM simulation software.By comparing image processing effects and size distribution statistical results of three shooting methods, a practical way to detect aggregate size distribution is proposed.%利用图像法对骨料粒度的在线检测系统进行研究,对骨料的平躺和掉落2种运动形态,以及正面光源和背光源这2种光源安装方式进行了拍摄效果研究,得出了一种比较好的光源安装方式.拍摄下落骨料时,传送带的速度、角度,骨料的厚度以及拍摄时相机安装的高度对骨料的拍摄效果会有不同程度的影响,通过使用EDEM仿真软件研究这些因素对骨料分散性的影响,得到骨料比较分散的各种参数指数从而优化拍摄方式.实验对比3种拍摄方式的图像处理效果和统计结果,得到较为实用的相机拍摄方式.