线激光位移传感器像素当量标定方法

为了满足线激光位移传感器的应用测试需求,提出一种基于高度块的线激光位移传感器像素当量的现场标定方法。其中,高度方向上的像素当量利用台阶高度进行标定,以修正厂家设定的像素当量的线性误差;宽度方向上的像素当量则利用台阶块结合传感器的横向移动位移的计算方法得到。考虑到线激光位移传感器可能存在安装倾斜误差,利用台阶块宽度在不同位置的高度差对倾斜角进行了标定,并修正了由倾斜角引入的高度测量误差。经实验证明,本文提出的方法很好地解决了线激光位移传感器在多位置测量时轮廓不连续的问题。

An Easy Way to Calibrating CCD Pixel- Equivalent of Line Laser Scanning Sensor in-site

In order to meet the application and test requirements of linear laser displacement sensor, a field calibration method of pixel equivalent of linear laser displacement sensor based on height block is proposed, in which the pixel equivalent in height direction is calibrated by step height to correct the linear error of pixel equivalent set by the manufacturer; the pixel equivalent in width direction is calibrated by step block combined with the transverse direction of sensor The calculation method of moving displacement is obtained. Considering that the linear laser displacement sensor may have tilt error, the tilt angle is calibrated by the height difference of step block width at different positions, and the height measurement error introduced by the tilt angle is corrected. Experimental results show that the method proposed in this paper can solve the problem of contour discontinuity in multi position measurement of linear laser displacement sensor.