Small-displacement measuring method in long-distance plane

A measurement method and long-distance technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve problems such as implementation difficulties, achieve small image distortion, improve extraction accuracy, and eliminate the effects of low-frequency atmospheric disturbances

Inactive Publication Date: 2008-01-09
浣石 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This requires high-precision calibration of the camera in advance, which is difficult for field implementation

Method used

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  • Small-displacement measuring method in long-distance plane
  • Small-displacement measuring method in long-distance plane
  • Small-displacement measuring method in long-distance plane

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0045] As shown in Figures 1 to 3, the long-distance in-plane small displacement measurement method of the present invention includes the following steps:

[0046] Make the cooperation logo board, as shown in Figure 1 - draw the cooperation logo P in the center, top, bottom, left and right of the cooperation logo board o ,P T ,P B ,P L ,P R , where the upper and lower cooperation marks P T ,P B the distance L between TB (unit: mm) and the left and right cooperation mark P L ,P R the distance L between LR (unit: mm) is known. The production method of the cooperation sign board is: process a flat plate that can be fixedly connected with the entity to be tested, and each flat plate is drawn with P o ,P T ,P B ,P L ,P R cooperation logo in set of five. P o ,P T ,P B ,P L ,P R Coplanar, P o both P T ,P B The determined straig...

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Abstract

A method for measuring small displacement in long-distance a coplane includes preparing cooperation mark plate and plotting cooperation mark Po, Pt and / or Pb, Pl and / or Pr on center, top and / or bottom, left and / or right on cooperation mark plate; connecting said plate to entity to be measured; collecting image of cooperation mark by camera and computer to calculate imaging ratio of image collected at initial state for obtaining displacement of Po on image then calculating actual displacement amount at vertical and horizontal directions of position to be measured .

Description

technical field [0001] The invention relates to a small displacement measurement method, in particular to a long-distance in-plane small displacement measurement method. Background technique [0002] Existing methods for measuring displacements such as building settlements can be classified into contact measurement and non-contact measurement. [0003] The method of contact measurement is to paste a strain gauge at the position to be measured, directly measure the strain, and then convert it into displacement. In field operations, this method is cumbersome to implement, and to obtain high-precision results, the requirements for patch technology are very high. [0004] Non-contact measurement is a method of light measurement. One of them is to use a total station. The total station can read the azimuth and distance of the target at the same time, so it can obtain the three-dimensional displacement of the target to be measured. However, in order to achieve high precision i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02G01B21/02
Inventor 浣石于起峰
Owner 浣石
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