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    • 3. 发明授权
    • Ultrasonic level measuring system
    • 超声波液位测量系统
    • US5319974A
    • 1994-06-14
    • US114386
    • 1993-08-30
    • Steven D. LenzRaymond Hulinsky
    • Steven D. LenzRaymond Hulinsky
    • G01F1/00G01F23/296G01S7/527G01S15/88G01F23/28
    • G01F1/002G01F23/2962G01S15/88G01S7/527Y10S367/908
    • To determine the depth of a body of water, ultrasonic pulses are transmitted from a point above the water at a known distance. Reflections from the water are received and the time of each of the leading edge of the reflections and the trailing edge are recorded as well as the amplitude. This information is used to sort the reflections and the most significant reflections are used to calculate the level of the water. The most significant reflections are determined by multiplying a range of between 10 and 50 times the amount of time difference between the last calculated distance to the target, a factor between 5 and 30 for the time bin that is first, a factor between 10 and 50 multiplied by the number of echoes in the bin divided by the largest number of echoes of all the bins, a value of between 20 and 100 multiplied by the number of correct level echoes in the bin divided by the largest number of correct level echoes of all of the bins and a value of between 5 and 40 multiplied by the average width of the echoes in one bin divided by the widest average of the width of all the bins.
    • 为了确定水体的深度,超声波脉冲从已知距离处的水上方传送。 接收来自水的反射,并记录反射和后缘的每个前沿以及振幅的时间。 这些信息用于对反射进行排序,最重要的反射用于计算水位。 最显着的反射是通过将最后计算出的距离与目标之间的时间差量的10到50倍之间的范围相乘来确定的,对于首先是10到50之间的因子,在5和30之间的时间段 乘以箱中的回波数除以所有箱的最大回波数,20到100之间的值乘以箱中正确水平回波的数量除以所有的正确水平回波的最大数量 并且值在5到40之间乘以一个箱中的回波的平均宽度除以所有箱的宽度的最宽平均值。