Long-distance all-weather structural vibration monitoring system
A technology for structural vibration and monitoring systems, applied in closed-circuit television systems, electrical transmission signal systems, measuring devices, etc., can solve problems such as inability to achieve comprehensive real-time, high-precision anti-interference, low sampling frequency, and cumbersome installation of displacement sensors
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Embodiment 1
[0039] Such as Figure 1-3 As shown, a long-distance all-weather structural vibration monitoring system described in the present invention includes a structure under test 6, a video acquisition module 8 and a video processing module 9, the video acquisition module 8 is connected to the video processing module 9, and the structure under test 6 is equipped with a displacement monitoring marker; the video acquisition module 8 receives the vibration video of the displacement monitoring marker, and the video acquisition module 8 sends the received vibration video to the video processing module 9 for processing, and the video acquisition module 8 Including the network camera 1 and the network camera, the information processed by the video processing module 9 is sent to the output module.
[0040] The network camera 1 is connected to a first solar self-powered component 5 .
[0041] The displacement monitoring marker is an artificial light source 2 , and the artificial light source ...
Embodiment 2
[0059] Such as Figure 1-3 As shown, a long-distance all-weather structural vibration monitoring system described in the present invention has the same structure as that of Embodiment 1; the artificial light source 2 in the monitoring system is installed at the visible position of the network camera 1, which can increase the light intensity of the measured structure 6. Robustness under changes and the possibility of monitoring at night can also be changed according to the characteristics of ambient light to improve its recognition under different ambient light. The video is wirelessly transmitted into the video processing module 9 through the network camera 1 Computer 3, analysis software 4, through video analysis, collecting displacement changes for accurate measurement, and real-time early warning, and has a visual real-time window.
Embodiment 3
[0061] Such as Figure 2-7 As shown, a long-distance all-weather structural vibration monitoring system described in the present invention has the same structure as in Embodiment 1, and its implementation steps are as follows:
[0062] Determination of the object to be tested: measure the pedestrian bridge in Lanzhou University of Technology. The bridge is a scaled-down model of a medium-sized actual structure. The total mass of the bridge deck is 1580kg. The length of the bridge deck is 10m, the width is 1.6m, and the calculated span is 9.8m. During the measurement, the measurement point is obtained at a distance of 20m from the center of the bridge.
[0063] Contrast test: While performing network camera measurement, install a laser displacement meter directly below the middle of the bridge span to obtain corresponding time-domain waveform curves to verify the accuracy of visual measurement. The model of the laser displacement meter is Banner 250U, and the sampling frequency...
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Abstract
Description
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Application Information
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