全站仪对中器检定方法研究

Research on the Verification Methods for the Plummet of Total Station

针对现有文献提出的对中器检定方法无法高效准确地完成固定式对中器的检定,提出通过增加辅助基座、竖轴转接器,实现待检对中器的快速准确检定。首先将辅助基座安置在三脚架或者全站仪检定台上,在辅助基座上安置竖轴转接器,再将待检对中器安置在竖轴转接器上,用辅助基座的脚螺旋对准天花板或者地面标志点,旋转待检对中器180°,如果待检对中器十字丝的像偏离标志点,则用待检对中器调整螺丝至其偏移量的一半,用辅助基座的脚螺旋调整其剩余的一半,重复这个过程即可完成固定式对中器的快速精确检定。这种方法可以满足测绘生产中快速检定固定式对中器检定的实际需求。

Aiming at the problem that the verification methods for the plummet proposed in the existing literatures cannot efficiently and accurately complete the verification of the plummet in the tribrach,it was proposed to increase the auxiliary tribrach,vertical axis adapter for realizing the the verification of the plummet.Firstly,the auxiliary tribrach on the tripod or verification device was placed;Secondly,the vertical axis adapter on the auxiliary tribrach was placed;Thirdly,the verification plummet on the vertical axis adapter was placed.The leveling screws of the auxiliary tribrachwas applied to aim at the marking point on the ceiling or under the ground,andthe verification plummet wasrotatedby 180°.If the crosshair image of the verificationplummetdeviatedfrom the marking point,the half of thedisplacement was adjustedwith the adjusting screw of the verificationplummet.The leveling screws of the auxiliary tribrach was explored to adjust the remaining half of the displacement.This process was repeated to complete the fast and accurate verification of the plummet in the tribrach.This method could meet the rapid verification of the plummet in the tribrach for surveying work.