Video measurement-based natural vibration frequency identification method for dam
A technology of natural frequency and video measurement, applied in measuring devices, color TV parts, TV system parts, etc., can solve the problem of low spatial resolution of data, achieve high spatial resolution, and save manpower, material and financial resources Effect
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[0022] The specific implementation of the video measurement-based dam natural frequency identification method involved in the present invention will be described in detail below in conjunction with the accompanying drawings.
[0023]
[0024] Such as figure 1 As shown, a concrete gravity dam 1 has a height of 103m, a crest width of 14.8m, an upstream storage level of 93.0m, and a downstream storage level of 32.0m. In order to measure its natural vibration frequency, DJI M600PRO UAV 2 was used to take pictures of the vibration process of the dam, as shown in figure 2 As shown, in the present embodiment, the specific steps of the dam natural frequency identification method based on video measurement are as follows:
[0025] Step 1: Collect the drone's non-natural frequency
[0026] Firstly, the wireless acceleration sensor 3 is fixed on the fuselage of the UAV 2 to collect the vibration of the UAV 2 itself. In order to reduce the influence of the wireless acceleration sens...
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