Measuring and testing – Liquid level or depth gauge
Patent
1993-08-30
1994-06-14
Gutierrez, Diego F. F.
Measuring and testing
Liquid level or depth gauge
367908, 367 99, 181124, 364509, 364562, 364581, G01F 2328
Patent
active
053199740
ABSTRACT:
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.
REFERENCES:
patent: 4145914 (1979-03-01), Newman
patent: 4572253 (1986-02-01), Farmer et al.
patent: 4578997 (1986-04-01), Soltz
patent: 4700569 (1987-10-01), Michalski et al.
patent: 4785664 (1988-11-01), Reebs
patent: 4868797 (1989-09-01), Soltz
patent: 4992998 (1991-02-01), Woodward
patent: 5131271 (1992-07-01), Haynes et al.
Hulinsky Raymond
Lenz Steven D.
Carney Vincent L.
Gutierrez Diego F. F.
Isco, Inc.
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