Method and device for simultaneously measuring the

专利名称：Method and device for simultaneously

measuring the flow speed and the depth ofa river

发明人：Kyu-Hong Ahn,Hak-Su Chang申请号：US08/360301申请日：19941221公开号：US05531125A公开日：19960702

摘要：A method and a device for simultaneously measuring the flow speed and thedepth of a river is provided. The method and the device use ultrasonic wave to measureaverage flow speeds at a plurality of points in the water flow of a river to measure theflow rate of the river. The device comprises a vertical rod (7), and inclined rod (9), avertical rod cylinder (8) movable up and down along the vertical rod, an inclined rodcylinder (10), through which the inclined rod can move, installed at an axis fixed

perpendicular to the vertical rod cylinder (8), an angle sensor (15) measuring the anglebetween the vertical rod (7) and the inclined rod (9), support rods (14) installed at saidaxis and the ends of the vertical rod and the inclined rod (9) opposite to said axis,ultrasonic vibrators (4, 4', 6, 6') installed at the ends of said support rods (14) spacedfrom the vertical rod and the inclined rod, a level (11) attached to the top of the verticalrod (7), and a calculating part (16). Said device measures the distances between saidultrasonic vibrators (4, 4', 6, 6'), ultrasonic wave propagation times, and the anglebetween the inclined rod and the water surface and then evaluates the flow rate and thedepth of the water from the measured data by the time difference method or the

frequency difference method.

申请人：KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

代理机构：Oblon, Spivak, McClelland, Maier & Neustadt

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