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Large-scale structure space deformation measuring device and method with reference light beam capable of non-linearly passing across obstacles

A reference beam, large-scale structure technology, applied in the direction of measurement devices, optical devices, instruments, etc., can solve the problems of inability to achieve high-precision measurement of large-scale space, measurement light easily affected by obstacles, and reduced measurement accuracy. Simple, flexible, and affordable

Pending Publication Date: 2022-05-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Laser tracker, total station and other equipment are expensive and have low measurement speed; monocular or binocular photogrammetry, the measurement accuracy decreases with the increase of the measurement range, and it is impossible to achieve high-precision measurement of large-scale space; and laser tracker, full The measurement optical path of the station instrument, monocular or binocular photogrammetry is easily affected by obstacles, and it is impossible to achieve cross-obstacle measurement when the measurement reference and the measurement point are not in sight

Method used

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  • Large-scale structure space deformation measuring device and method with reference light beam capable of non-linearly passing across obstacles
  • Large-scale structure space deformation measuring device and method with reference light beam capable of non-linearly passing across obstacles
  • Large-scale structure space deformation measuring device and method with reference light beam capable of non-linearly passing across obstacles

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Embodiment Construction

[0056] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0057] A large-scale structural space deformation measurement device in which a reference beam can be transmitted across obstacles nonlinearly, characterized in that it includes a space reference emission unit 3-1 and a space pose measurement unit 3-2,

[0058] The space reference transmitting unit includes an installation base 1-7, a crosshair laser generator 1-1, a laser rangefinder 1-2, a positioning reference platform 1-3, a V-shaped positioning platform 1-4 and a light-transmitting window 1 -6, the laser range finder and the V-shaped positioning groove are fixedly installed on the installation base, the positioning reference table includes two positioning end faces parallel to each other and perpendicular to the installation reference pl...

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Abstract

The invention relates to a large-scale structure space deformation measurement device and method with a reference light beam capable of non-linearly passing across obstacles, and the device comprises a space reference emission unit and a space pose measurement unit which are designed in a split type structure, thereby improving the flexibility of the device, and having high expansibility based on a series structure. The space reference emission unit adopts cross curve structured light as a reference light beam and provides a space pose measurement reference, and the space pose measurement unit can measure space deformation relative to the reference light beam; the space reference transmitting unit and the space pose measuring unit are used in cooperation to achieve measurement reference transmission, and can be used for large-scale structure space deformation measurement under the condition that the measurement reference and a measurement end are not intervisible due to obstacle shielding. The positions of the image sensor and the image receiving screen are fixed, so that the problem that the system measurement precision is reduced along with the measurement distance in the traditional space deformation measurement technology based on photogrammetry is avoided.

Description

technical field [0001] The invention belongs to the technical field of spatial deformation measurement based on laser and machine vision, and in particular relates to a large-scale structure spatial deformation measurement device and method in which a reference beam can be transmitted nonlinearly across obstacles. Background technique [0002] The space deformation measurement technology based on laser and machine vision is widely used in large-scale structure space deformation measurement and large-scale structural health monitoring and other occasions. [0003] At present, commonly used space deformation measurement equipment includes laser tracker, total station, monocular or binocular photogrammetry and other measurement equipment. Laser tracker, total station and other equipment are expensive and have low measurement speed; monocular or binocular photogrammetry, the measurement accuracy decreases with the increase of the measurement range, and it is impossible to achiev...

Claims

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Application Information

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IPC IPC(8): G01B11/16
CPCG01B11/16G01B11/167Y02T90/00
Inventor 裘祖荣李浩鹏胡文川刘佳琛
Owner TIANJIN UNIV
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