Multi-view-field bridge deflection measuring device and method and storage medium

Abstract

The embodiment of the invention provides a multi-view-field bridge deflection measuring device and method and a storage medium. The device comprises a main control device, a synchronous trigger and a plurality of shooting modules, and the main control device is connected with the synchronous trigger and the shooting modules; the synchronous trigger is also respectively connected with each shooting module; the shooting modules are arranged at the corresponding target positions respectively; the main control equipment is used for calculating a scale factor of each point to be measured according to the distance information and the included angle information; starting a synchronous trigger to trigger each camera to synchronously acquire a corresponding bridge deformation image; calculating image displacement of a to-be-measured point corresponding to each camera according to the bridge deformation image; and calculating the deflection of the bridge according to the scale factor and the image displacement of each to-be-measured point. According to the provided multi-view-field bridge deflection measurement scheme, multiple view fields are provided through the multiple shooting modules to shoot the to-be-measured point, and the imaging definition of the to-be-measured point in the view fields is improved, so that the calibration error is reduced, and the precision is improved.

Description

technical field [0001] The present application relates to the technical field of bridge detection, and in particular, to a device, method and storage medium for measuring the deflection of a multi-field bridge. Background technique [0002] The existing common bridge deflection detection technologies based on machine vision can be roughly divided into two categories: the first is single-field single-point detection technology, and the second is single-view multi-point detection technology. When large buildings such as bridges deform, , the pixel displacement of the distant point to be measured in the image is very small, which usually cannot be accurately calibrated, resulting in a large displacement measurement error and greatly reducing the accuracy of deflection measurement. SUMMARY OF THE INVENTION [0003] In order to solve the above technical problems, embodiments of the present application provide a multi-field bridge deflection measurement device, method, and stora...

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Problems solved by technology

[0002] The existing commonly used bridge deflection detection technologies based on machine vision are roughly divided into two categories: the first type is single-field single-point detection technology, and the second type is single-field multi-point detection technology. When large buildings such as bridges deform , the pixel displacement of the distant point to be measured in the image is very small, and it is usually impossible to perform accurate calibration, resulting in a large displacement measurement error and greatly reducing the accuracy of deflection measurement

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