光电传感器成像技术在曲面孔位测量中的应用

Application of Optoelectronic Sensor Imaging Technique to Curved Hole Position Measurement

对曲面孔系的三维测量,传统方法有诸多局限。用CCD光电传感器获取图像,通过图像识别确定圆心坐标,按几何关系计算出孔系空间夹角,可将三维测量简化为二维测量。文章介绍了基于图像传感器的孔系三维坐标测量系统的原理和数学模型。以所介绍的测量系统实现了球面孔位的三维测量,孔系间角度测量标准差小于3″。

The traditional method had many limits to achieve the three-dimensional position measurement of the curved holes. Three-dimensional measurement can be simplified to planar measurement through a series of steps: firstly, acquire the image by CCD photoelectronic sensors; then recognize the centre of a circle by image processing and calculate the space included angle for the relative position of hole series. The principle and mathematics model of the hole position precision measurement system based on image sensors are described. Three-dimensional measurement of the hole position on the sphere is realized by using the above-mentioned measurement methods, and the standard angle deviation is less than 3 double prime among the holes.