Communications – electrical: acoustic wave systems and devices – Receiver circuitry
Patent
1996-08-13
1997-12-02
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Receiver circuitry
267903, H04B 100
Patent
active
056943733
ABSTRACT:
A general-purpose, adaptable, device for interfacing acoustic and ultrasonic transducers to circuits for high resolution distance and motion measurement, and two-way communication. A generator signal (52) synchronizes to a sensing transducer signal (21), or a reference signal (23). A detector (20) provides a detected-cycle signal (22) and a detected-amplitude signal (24) from the signal being detected. Comparator (30) creates a comparator signal (32) from the detected-cycle and generator signals. A sustaining circuit provides flywheel operation during gaps. A driver (60) drives a radiating transducer. Options include: single or dual transducer operation, continuous or pulsed-burst operation, optimum frequency communication using low cost piezoelectric transducers, sonic wave frequency scanning, phase and amplitude modulation and demodulation, fast synchronization, detected vs reference signal comparison, and self-testing.
REFERENCES:
patent: 4122427 (1978-10-01), Karsh
patent: 4197856 (1980-04-01), Northrop
patent: 4199246 (1980-04-01), Muggli
patent: 4914638 (1990-04-01), Milner
patent: 5113116 (1992-05-01), Wilson
patent: 5216338 (1993-06-01), Wilson
Biber et al.; Ultrasonic Ranging System Handbook; Polaroid Corporation; Cambridge, MA; pp. 1-14 1980.
Special Purpose Linear Devices; National Semiconductor; Santa Clara, CA; pp. 5-103 1989.
Electrostatic Transducer Provide Wide Range Ultrasonic Measurement; Linear Aplications Handbook; National Semiconductor; Santa Clara, CA; pp. 1083-1084 1986.
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