Technique for monitoring positioning and deformation based on angular distance difference of total station

A technology of deformation monitoring and total station, applied in the direction of instruments, measuring devices, etc., to achieve the effect of improved accuracy and greater flexibility

Inactive Publication Date: 2011-12-14
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the many troubles and inconveniences inevitably brought by GPS and RTK technology in deformation monitoring and improve work efficiency, the purpose of the present invention is to provide a deformation monitoring technology based on total station angular distance differential positioning, which overcomes the existing methods The above-mentioned shortcomings

Method used

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  • Technique for monitoring positioning and deformation based on angular distance difference of total station
  • Technique for monitoring positioning and deformation based on angular distance difference of total station
  • Technique for monitoring positioning and deformation based on angular distance difference of total station

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Embodiment Construction

[0021] Set three stable reference points O, A, and B on the ground far away from the deformation zone or on a stable building according to the site conditions. 1 , S 2 ,... S n See through. The coordinates of the three reference points A(X A , Y A ), O(X O , Y O ), B(X B , Y B ) is known, the distance L of OA calculated from these three points 0 , the distance L′ of OB 0 , The horizontal angle β between OA and OB 0 , place the total station on point O, after centering and leveling, take a backsight to point A and set the horizontal angle to 0°00′00″, after determining the direction, use the total station to align fixed points A, B, Monitoring point S i (i=1, 2..., n) directly measure its distance D OA ,D OB , (i=1, 2..., n) and OA and OB, OS i The horizontal angle between (i=1, 2..., n)

[0022] Will measure the distance D OA ,D OB Distance L from known OA 0 , the distance L′ of OB 0 make a difference,

[0023] ΔD OA =L 0 -D OA , ΔD OA is the differ...

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Abstract

The invention discloses a technique for monitoring positioning and deformation based on the angular distance difference of a total station. In the technique disclosed by the invention, the total station is used as a data acquisition tool; the average distance error rate per unit and the average angle error rate per unit are solved by utilizing an angular distance difference method according to the known distance and known angle of a fixed point and the measuring distance and measuring angle obtained by actual measurement; the actual distance and angle of a monitoring point after being modified are obtained according to the error distribution of the observation distance and angular dimension of the monitoring point; the monitoring point coordinates obtained by observation for first time are used as initial coordinates according to the accurate coordinates of the monitoring point obtained by the coordinates of the fixed point; and the deformation conditions of the monitoring point are judged by comparing the monitoring point coordinates of the observation for each time with the initial coordinates, thus a reliable deformation degree can be obtained and the accuracy level of the monitoring method is greatly improved.

Description

1. Technical field [0001] The invention relates to a deformation monitoring method, in particular to a positioning deformation monitoring technology based on the angular distance difference of a total station. 2. Background technology [0002] So far, deformation monitoring methods mainly refer to high-precision ground monitoring technology, photogrammetry methods, and GPS monitoring systems. [0003] ① The ground monitoring method mainly refers to the measurement of deformation by measuring changes in angle, side length and elevation with high-precision measuring instruments (such as theodolite, rangefinder, level, total station, etc.), which are currently the main means of deformation monitoring. [0004] ②Using the ground photogrammetry method to measure the deformation of engineering buildings, structures, landslides, etc., is to select stable points around the deformed body, place cameras on these points, and take pictures of the deformed body, and then through the inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/32
Inventor 冯仲科王春博吴斌姚山刘德庆
Owner BEIJING FORESTRY UNIVERSITY
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