Device and method for acquiring wave characteristic parameters in water tank

Abstract

The invention discloses an acquisition device and method for acquiring wave characteristic parameters in a water tank, comprising an experimental water tank, a chip laser emitter, a video camera and a computer; the side wall and the bottom wall of the experimental water tank are made of transparent materials; the chip laser emitter is located in the experimental Below the bottom wall of the water tank, the sheet laser is emitted to the water body in the experimental water tank in a vertical upward shooting method; the camera is located outside the side wall of the experimental water tank and uses a side-view shooting method to shoot the wave movement process of the laser irradiation section at fixed points; the computer and The camera is connected, and the computer uses an image recognition algorithm to identify the outline of the wave in each frame of the video shot by the camera, and calculates the wave characteristic parameters; the present invention can obtain the time and space continuous change process and distribution of the wave form; Wave height, wavelength, wave velocity and wave period; the whole process does not interfere with the movement of water bodies and waves, the degree of automation is high, the acquisition of wave characteristic parameters is not estimated, and the data accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of hydrodynamic experiments, and in particular relates to an acquisition device and an acquisition method for characteristic parameters of waves in a water tank. Background technique [0002] The surface of water bodies such as oceans and lakes in nature is usually not calm, but there are undulating waves. In the process of developing and utilizing oceans and lakes, the characteristic parameters of waves (wave height, wave period, wavelength, wave speed) must be determined. To carry out special research, for example, when designing docks, water platforms, wave power generation devices, etc., the influence of waves on them must be considered. It can be said that wave characteristic parameters are an important content in wave dynamics research. [0003] Wave characteristics are very complex, and it is very difficult to simulate and study them. At present, indoor tank simulation experiment is an effective metho...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to aim at the drawbacks of the above-mentioned existing wave characteristic parameter acquisition methods, apply image recognition technology to hydrodynamic experiment research, and provide a wave characteristic parameter acquisition device and its acquisition method in the water tank. The characteristic parameter acquisition device and its acquisition method can acquire the time and space continuous change process and distribution of the wave shape; the wave height, wavelength, wave velocity and wave period can be obtained; the whole process has no interference with the movement of the water body and the wave, and the degree of automation is high. The acquisition of wave characteristic parameters has not been estimated, and the data accuracy is high

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