电梯导轨直线度和扭曲度检验系统的研制

为了解决电梯导轨直线度和扭曲度检验中需要的直线和角度基准问题,采用十字线激光束和图像处理技术开发了电梯导轨直线度和扭曲度检验系统.激光源固定在导轨的一端,移动光靶在导轨上移动并在指定位置摄取十字线激光束图像,图像经处理后获得十字线交叉点坐标和横线倾角.介绍了移动光靶的设计方法和交点坐标和扭曲角的计算方法,并对由扭曲产生的误差进行修正.用波长658 nm的激光器、640×480 pixel摄像机,光靶分辨率为0.055 66 mm/pixel,在5 m处摄取50 frame图像,标准偏差横向为0.022 3 mm、纵向为0.008 30 mm和角度为1.17′.实验结果表明,采用该方法的电梯导轨直线度和扭曲度检验系统,结构简单,操作方便,测量准确.

Development of straightness and twist degree inspecting system for elevator rail

In order to provide the line and the angle references required in inspecting process for elevator rail,a straightness and twist degree inspecting system using cross laser beam and image processing was developed.A laser source had been fixed at one end of the rail,an image target was being moved along the rail and laser images were taken at scheduled points.The coordinate of the cross point and the angle of the level line of the images were detected by image processing.The error caused by twist was corrected...