Laser plumbing method and system taking vertical deviation correction into account

Abstract

The invention provides a laser plumbing method and system taking vertical deviation correction into account. The laser plumbing method comprises the following steps: after laser plumbing is completed, testing a ground coordinate of a laser spot center on a laser target in an earth-centered fixed coordinate system by using a GNSS method; acquiring corresponding vertical deviation according to the longitude and latitude of the laser spot center; calculating the altitude difference of the laser spot center on the laser target to a test point; calculating a coordinate modification amount in the earth-centered fixed coordinate system; calculating the coordinate modification amount of the laser spot center in an engineering coordinate system; finally acquiring accurate laser plumbing result. As the influence of vertical deviation is taken into full account, coordinate transmission error in conventional laser plumbing process can be effectively eliminated. The laser plumbing method is high in precision, good in reliability, easy to implement, relatively good in engineering practicability, great in engineering significance for construction of high-rise buildings, and great in market value.

Description

technical field [0001] The invention belongs to the field of engineering measurement, and in particular relates to a method and system for laser point projection in consideration of vertical line deviation correction. Background technique [0002] Laser point projection is a measurement method that uses a laser plumb instrument to transfer the plane coordinates of the measurement point up or down along the plumb line. It is widely used in high-rise buildings and underground construction measurements and plays an important role. The principle is to center and level the laser plumb meter on the measuring point, then use the laser plumb meter to generate a vertical beam of laser light, and place a laser target at a specific elevation directly above or directly below it to obtain a Laser spot, the laser spot is used as the basis for calculation at a specific elevation. However, in this process, the existing technology directly equates the plane coordinates of the center of the ...

AI Technical Summary

Problems solved by technology

However, in this process, the existing technology directly equates the plane coordinates of the center of the laser spot to the plane coordinates of the measuring point (starting point) at the laser plumb meter, ignoring the influence of the vertical line deviation, which will lead to a systematic sexual deviation

This deviation will increase as the vertical transmission distance (height) increases, and when it exceeds a certain height, it will cause unacceptable errors

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