Two-dimensional wind speed and direction test method through visual identification based on reflecting silk thread attitude angle
A test method and technology of wind speed and direction, applied in the direction of fluid velocity measurement, velocity/acceleration/impact measurement, measurement device, etc., can solve the problem of slow response speed, achieve fast response speed, overcome susceptibility to electromagnetic waves, and have no mechanical wear. Effect
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[0034] The method includes two parts: wind tunnel calibration and actual measurement in the specific implementation process:
[0035] 1) Some steps of wind tunnel calibration include:
[0036] (A) The position of the CCD area array camera and the reflective wire is fixed. When the suspended reflective wire is stationary, it is vertically downward. The CCD area array camera is installed directly below the reflective wire. ;
[0037] (B). Put the CCD area array camera and reflective wire in the above steps into the wind tunnel for calibration, adjust the wind speed in the wind tunnel, and take the stored reflective wire images through the CCD area array camera to obtain multiple groups of reflections at different wind speeds Effective projected length data of the wire;
[0038] Among them, CCD area array camera imaging: the image collected by the camera is converted into a digital image by a high-speed image acquisition system in the form of a standard TV signal, and input to ...
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