Sensor-based liquid leveling system for structures

Details Sensor-based liquid leveling system for structures Sensor-based liquid leveling system for structures

1994-12-15

1997-12-02

Dougherty, Elizabeth L.

Measuring and testing

Liquid level or depth gauge

G02F 2300

Patent

active

056938810

ABSTRACT:
A level measuring system for leveling structures using the principal that water seeks its own level. A plurality of sensor vessels each of which includes ultrasonic transducers for measuring the level of a liquid in the vessel. A liquid source provides liquid to the sensors and a vacuum pump withdraws the liquid after measurements are complete. Each sensor vessel includes two ultrasonic transducers, one of which measures the sonic velocity and the other measures the level of the liquid. A calibration device is provided to verify calibration of the level measuring sensor. In one embodiment, the two ultrasonic sensors are arranged vertically in a transparent cylindrical housing. In a second embodiment, a first horizontal bore and a second intersecting vertical bore are provided in a solid material, with the sonic velocity measuring sensor at one end of the horizontal bore and the level measuring sensor in the vertical bore.

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patent: 4868797 (1989-09-01), Soltz
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patent: 5121340 (1992-06-01), Campbell et al.
patent: 5245869 (1993-09-01), Clarke et al.
patent: 5274245 (1993-12-01), Lee
patent: 5309763 (1994-05-01), Sinclair

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