摘要
激光三角位移传感器,特别是激光与镜头光轴夹角较小时,分辨率通常不均匀,针对常见的激光三角位移传感器结构,从物像位移关系、像中心定位算法、光斑和像的大小与分布等各个方面因素进行分析,分别得出它们对分辨率的影响趋势是不同的。根据这一特点,综合考虑各个因素,优化光斑参数,使各个因素对分辨率影响相互抵消,以取得较均匀的分辨率。经过实验验证,该方法可以取得较为均匀的分辨率。
The non-uniformity of resolution is a common problem in the application of laser triangulation displacement sensors, especially when sensors works with a small angle between laser and lens axis. Several factors which may lead to non-uniformity of resolution, such as the relation between the displacements of object and image, algorithm, size of spot and image, was discussed in this paper. According to the analysis, it was possible to reduce the non-uniformity of resolution by parameters optimization. The exp...
出处
《红外与激光工程》
EI
CSCD
北大核心
2008年第S1期75-78,共4页
Infrared and Laser Engineering
关键词
激光三角
测距
分辨率
参数优化
Laser triangulation
Displacement measurement
Resolution
Optimization
