一种可变长度光电基准尺

A variable-length photoelectric reference scale

为了实现对非正交轴系激光经纬仪测量系统的快速、准确定向,采用构建新型光电基准尺的方法,提出并研究了一种基于高精度光电位置敏感器件的可变长度光电基准尺构建技术。阐述了非正交轴系激光经纬仪的特点,根据其特点及非正交轴系激光经纬仪测量系统定向的需要,确定了可变长度光电基准尺构建的总体思路,完成了硬件电路设计,构建了可变长度光电基准尺,并标定了两光电位置敏感探测器的空间位姿关系,以实现可变长度基准测量。结果表明,利用该可变长度光电基准尺定向后的测量系统,其相对测量精度优于0.03%,可方便、高精度地实现非正交轴系激光经纬仪测量系统的定向。

In order to orientate a non-orthogonal shafting laser theodolite measurement system quickly and accurately, aconstruction technology of variable-length photoelectric reference scale was proposed based on high-precision photoelectric positionsensitive detector . Firstly, the feature of a non-orthogonal shafting laser theodolite was elaborated. According to the features andthe orientation requirement of a non-orthogonal shafting laser theodolite measurement system, the general idea of the constructionof variable-length photoelectric reference scale was confirmed. After that, the design of hardware circuit was finished and avariable-length photoelectric reference scale was constructed. Finally, spatial position relationship between two photoelectricposition sensitive detectors was calibrated to realize the measurement of variable-length reference. The experiment results showthat the relative measurement accuracy of variable-length photoelectric reference scale is better than 0. 03% . The orientation of anon-orthogonal shafting laser theodolite measurement system can be realized conveniently and in high-precision.