摘要
为了使光电测量设备快速进入测量状态,减小因倾斜带来的测量误差,研究了一种光电测量设备实时调平补偿方案。根据光学成像理论,推导了物高、物距、像高、像距等参数之间的换算关系。然后根据倾斜特性建立了物体或成像系统倾斜时的实时调平补偿数学模型。利用数学模型确定的补偿算法和水平倾角仪测量的角度值,可对测量设备在一定倾角范围内倾斜时进行实时调平补偿。对此补偿算法进行了实验验证。实验结果表明,测量设备在水平倾角α为0.26°,β为1.197°的情况下,经过实时调平补偿后可将系统的测量误差由-0.17615%优化到-0.07787%,使光电测量设备可在倾斜的情况下保证测量精度。
In order to make the measuring device quickly work and to reduce the measuring error from inclination,a scheme of real-time compensative leveling in the photoelectric measuring equipment was presented.On the basis of the optical theory,the relationships among the subject hight,subject distance,image hight and the image distance were deduced.Then,a mathematical model for real-time compensative leveling the object or the optics system was established using the incline characteristic.Based on the the mathematical model and the angles tested by an inclinometer,a real-time compensation scheme was carried out to level and compensate the inclining angle in a certain range.The scheme was verified by experiments,and the result shows that after real-time compensation the measurement precision is from-0.176 15% to-0.077 87% when the obliquities of measuring equipment is at α in optimized 0.26° and β in 1.197°.It is concluded that the scheme can keep the measurement precision of the measuring equipment when it works at an incline.
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2010年第7期1543-1547,共5页
Optics and Precision Engineering
基金
中国科学院知识创新工程领域前沿项目
关键词
光电测量
调平补偿
实时补偿
补偿算法
倾角仪
photoelectronic measurement
compensative leveling
real-time compensation
compensation algorithms
inclinometer
