A Computer Vision-Based On-Line Monitoring Method of Cable Distributed Stress
A computer vision and stress technology, applied in the directions of calculation, image analysis, image enhancement, etc., can solve the problems of complex nonlinear conversion relationship of physical quantities, monitoring method is susceptible to electromagnetic interference, and very high processing technology requirements, so as to achieve real-time online early warning function , Realize the effect of long-term real-time online monitoring, simplify processing and installation process
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[0067] The following combination figure 1 The case shown in and figure 2 The workflow shown in further illustrates the invention.
[0068] see figure 1 and figure 2 , the case cited in the present invention is to utilize a kind of non-contact cable distribution stress online monitoring system based on computer vision technology to carry out stress state monitoring on the cables on a long-span bridge (here is an arch bridge), and the specific implementation steps as follows:
[0069] A. Set up two high-speed cameras 4 and 5 and debug camera parameters;
[0070] A1. Set up two high-speed cameras 4 and 5 under the bridge away from the cable 2, and aim the lens at the pre-set pattern test area 3 on the cable;
[0071] A2. Repeatedly adjust the spatial intersection angle of the two high-speed cameras 4 and 5, adjust the lens focal length, aperture size and magnification of the cameras, etc., so that the measured area 3 of the cable appears in the field of view of the two cam...
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