Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control
Patent
1983-10-17
1985-09-24
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Echo systems
Returned signal used for control
367 99, 367902, G01S 1588, G01S 752
Patent
active
045436495
ABSTRACT:
An ultrasonic system is responsive to the relative position of a movable device within a fluid-filled structure. A transducer transmits ultrasonic signals from a location fixed within the structure to the device for reflection thereby and for picking up the reflected signals. A reference target within the fluid, attached either to the structure or the device, also reflects the transmitted ultrasonic signals from also being picked up by the transducer, such reference target being a predetermined fixed distance relative to either the device or the structure, whereby the different picked up signals reflected from the device and reference target will have a timed relationship corresponding to such fixed distance, measurement circuitry means is responsive to the picked up signals reflected from the device and to such timed relationship for providing an output signal which is a function of change in the position of the device within the structure, being includes circuitry responsive to the timed relationship for causing the output signal to be compensated for changes in the velocity of ultrasonic signals in the fluid resulting from changes in parameters thereof subject to causing errors in the output signal. The structure is, for example, a fluid cylinder and the movable device is a piston within the cylinder. Alternatively, sensing of the parameter is used for output signal compensation.
REFERENCES:
patent: 2743429 (1956-04-01), Erdman et al.
patent: 2985018 (1961-05-01), Williams
patent: 3237150 (1966-02-01), Beck et al.
patent: 3364361 (1965-08-01), Burger
patent: 3453937 (1969-07-01), Haberman
patent: 3572208 (1968-12-01), Mott
patent: 3898555 (1975-08-01), Tellerman
patent: 4008455 (1977-02-01), Pedersen
patent: 4121504 (1978-10-01), Nowak
patent: 4140044 (1979-02-01), Biller et al.
patent: 4145914 (1979-03-01), Newman
patent: 4210969 (1980-07-01), Massa
patent: 4229798 (1980-10-01), Rosie et al.
patent: 4470299 (1984-09-01), Soltz
Bollinger Arthur E.
Head Kenneth O.
Farley Richard A.
Teknar, Inc.
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