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METHOD TO MEASURE ANGLES OF INCLINATION AND HEIGHT OF WATER SURFACE ROUGHNESS RELATIVE TO ITS BALANCED CONDITION
METHOD TO MEASURE ANGLES OF INCLINATION AND HEIGHT OF WATER SURFACE ROUGHNESS RELATIVE TO ITS BALANCED CONDITION
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机译:相对于平衡状况测量水面粗糙度的倾斜角度和高度的方法
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摘要
FIELD: measurement equipment.;SUBSTANCE: method consists in the fact that at least one laser beam is sent along axis Z vertically upwards from underwater position through a certain thickness of water and water surface. Angle of inclination of water surface is defined in the point of ray exit. Laser beam is visualised in the form of mark on the first receiving transparent diffused plate arranged in plane XY above water surface at the distance H1, and on the second receiving diffused plate arranged parallel to the first one at the distance H2 from it. Using digital video camera, values of deviations from zero point ΔX1 and ΔY1 are registered at the first receiving diffused plate and ΔX2 and ΔY2 at the second receiving diffused plate. Then using simultaneously measured deviations ΔX1, ΔX2, ΔY1, ΔY2, values of appropriate instantaneous values of inclination angles αx and αy of water surface are synchronously measured in the selected point, as well as height h of water surface roughness in the same point.;EFFECT: provides for synchronous measurement of height and inclinations of water surface roughness in one point.;3 cl, 5 dwg
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