Ultrasonic range finder using ultrasonic sensor

Details Ultrasonic range finder using ultrasonic sensor Ultrasonic range finder using ultrasonic sensor

1996-06-21

1999-05-25

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367 99, 367176, 310327, G01S 1500, H04R 1700

Patent

active

059075210

ABSTRACT:
An ultrasonic range finder which can effectively suppress the influence of direct transmission waves is provided. An ultrasonic range finder according to the present invention comprises a transmitting ultrasonic sensor, a receiving ultrasonic sensor, and a case which holds both ultrasonic sensors mounted and separated on the same surface, wherein a foam member fabricated to contain air bubbles is provided between the ultrasonic sensors within the case and the foam member is exposed to the surface of the case. Each of the sections of the transmitting and receiving ultrasonic sensors (which are held within the case) are covered with a second foam member and the matching layer sections of the transmitting and receiving ultrasonic sensors project beyond the surface of the case.

REFERENCES:
patent: 4528652 (1985-07-01), Horner et al.
patent: 4549107 (1985-10-01), Kaneko et al.
patent: 4739860 (1988-04-01), Kobayashi et al.
patent: 4780861 (1988-10-01), Stembridge et al.
patent: 5176140 (1993-01-01), Kami et al.

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