A measurement method and system for obtaining the displacement change of a simulated earthquake shaking table
A technology of displacement change and measurement method, applied in the field of displacement change measurement method and its system, can solve the problems of limited measurement range and inability to extract information such as displacement, and achieve short measurement period, good promotion and application prospects, and huge industry advantages. Effect
Active Publication Date: 2017-10-13
苏州西博三维科技有限公司
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Problems solved by technology
The common eddy current displacement sensor has the advantages of high reliability and strong anti-interference ability, but limited by the working environment, the measurement range is limited
[0008] 3. Ultrasonic measurement method: using the principles of ultrasonic reflection, refraction and waveform conversion, it is mainly used for industrial product defect detection, and cannot be used for the extraction of displacement and other information
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Embodiment
[0050] In this embodiment, the displacement variation of the simulated seismic shaking table test is quickly obtained by constructing a measurement system for simulating the seismic shaking table:
[0051] 1. Construction of the measurement system
[0052] Such as figure 2 As shown, the simulated earthquake vibration table is built, including a tower, an image acquisition device composed of a camera, a lens and a laser detector, a server connected to the image acquisition device, and a terminal capable of running an embedded system connected to the server, Both the camera and the lens are provided as a set, and the two cameras are symmetrically arranged on both sides of the laser detector, and the two cameras and the laser detector are both slidably fixedly arranged in a linear guide rail through a base, The laser emitting end of the laser detector and the two lenses are both arranged facing the tower. In a preferred embodiment of the present invention, an area to be measur...
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The invention provides a measurement method for acquiring displacement changes of an earthquake simulator. The method comprises steps of building a measurement system, identifying non-coded points and carrying out image acquisition, carrying out spatial coordinate transformation on the non-coded points on the image, carrying out three-dimensional and dynamical matching on the non-coded points on the image, carrying out sequence matching on the non-coded points on the image, tracking the image sequence, carrying out three-dimensional rebuilding, and displaying and outputting data. The invention also provides a measurement system which is used in match with the measurement method. An optical principle is used for acquiring a video image for the non-coded points identified artificially in the structure, the video image is processed based on a digital image processing technology and a related algorithm, automatic recognition and matched tracking on a measurement point position can be realized, three-dimensional rebuilding of the measurement point is thus obtained, the displacement change amount of each measurement point is acquired, and the overall measurement process is contact-free, no damages are caused, the measurement precision is high, the automatic degree is high, the measurement period is short, and the industrial advantages are huge, and the popularization and application prospect is good.
Description
technical field [0001] The invention belongs to the technical field of optical measurement, and relates to a three-dimensional dynamic deformation measurement method and a measurement system using optical principles, in particular to a measurement method and a system for obtaining displacement changes of a simulated seismic vibration table. Background technique [0002] Seismic activity has a certain degree of unpredictability, and its sudden arrival will bring great disasters to human beings, especially the damage to houses and buildings will directly endanger personal safety. For this reason, it is of great significance to design housing buildings with high earthquake resistance. As an essential test and demonstration link before the construction of high-rise buildings, the seismic shaking table test of high-rise buildings provides strong technical support for the seismic research and design guidance of high-rise buildings. [0003] The shaking table test of high-rise sim...
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IPC IPC(8): G01B11/00G01B11/02G01B11/16
CPCG01B11/002G01B11/028G01B11/16
Inventor 刘建立张龙唐正宗刘小波李宗剑
Owner 苏州西博三维科技有限公司