Method for measuring flatness of wall surface

Abstract

A method for measuring flatness of a wall surface belongs to the technical field of wall surface flatness measurement, and comprises the following steps: selecting a plurality of to-be-measured wall surface points on a to-be-measured wall surface; measuring initial assumed coordinates corresponding to the plurality of to-be-measured wall surface points; establishing a wall coordinate system based on the plurality of to-be-measured wall surface points; converting the plurality of initial assumed coordinates into the wall coordinate system to obtain a plurality of wall coordinates; and calculating the flatness of the wall surface based on the plurality of wall surface coordinates. Compared with the prior art, the method for measuring the flatness of the wall surface has the beneficial effects that a prism-free total station can directly measure the three-dimensional coordinates of each point of the wall surface without cooperation of a lens driver, and the precision in a short distance is not different from that of a prism, so that measurement points are flexibly and freely selected, point positions can be uniformly and reasonably arranged, and the measurement precision is relatively high; and unsafe factors caused by climbing the wall body by observers are eliminated.

Description

technical field [0001] The invention belongs to the technical field of measuring the flatness of a wall, and in particular relates to a method for measuring the flatness of a wall. Background technique [0002] When the construction of the exterior wall of a building or its exterior finish is completed, it is often necessary to test its flatness to evaluate its construction quality. [0003] Flatness is one of the evaluations of wall construction quality, that is, the standard deviation of wall points relative to the standard surface deviation. Conventional measurement methods are: hanging vertical line method, relying on ruler method, stretching straight line method, etc. Its advantages are: intuitive reading and strong operability; disadvantages are: when the wall area is large, it is difficult for the surveyor to grasp the position of the measuring point. Uniformity, the number of measuring points is also difficult to meet the requirements, making the evaluation results ...

AI Technical Summary

Problems solved by technology

Conventional measurement methods are: hanging vertical line method, relying on ruler method, stretching straight line method, etc. Its advantages are: intuitive reading and strong operability; disadvantages are: when the wall area is large, it is difficult for the surveyor to grasp the position of the measuring point. Uniformity, the number of measuring points is also difficult to meet the requirements, making the evaluation results unrepresentative; when the wall is high, the surveyors need to climb to the wall to work at high altitudes, which is unsafe; the instruments used have low precision, and when When the measurement environment is unfavorable (such as wind swing, temperature difference, etc.), some walls (glass curtain walls, etc.) that require high evaluation accuracy cannot meet the accuracy requirements of a certain order of magnitude; work efficiency is low, etc.

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