Hydrophone with ferroelectric sensor

Details Hydrophone with ferroelectric sensor Hydrophone with ferroelectric sensor

1999-04-16

2000-11-21

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367154, 367165, 367188, 310337, G01V 138, G01V 116

Patent

active

06151277&

ABSTRACT:
An arcuate or flat ferroelectric sensor is incorporated in a seismic streamer. The structure comprises two half-cylinders which are mounted together around a cable. The half-cylinders are coupled together by bolts or pins or any other appropriate means. Each half-cylinder defines a well into which a sensor is mounted. With the sensor in place, the structure is covered over with a sound-transparent material to receive an acoustic signal into the sensor. Electrical leads from the sensor are directed through ports in the half-cylinders, and the leads are connected together to provide a composite sensed signal to the cable in analog form. The sensor in each half-cylinder is a single element hydrophone that, when connected to a sensor in a complementary half cylinder in series or in parallel, forms an acceleration cancelling hydrophone.

REFERENCES:
patent: 5589725 (1996-12-01), Haertling
patent: 5600608 (1997-02-01), Weiss et al.
patent: 5632841 (1997-05-01), Hellbaum et al.
patent: 5639850 (1997-06-01), Bryant
patent: 5781510 (1998-07-01), Chang et al.
patent: 5796676 (1998-08-01), Chang et al.
patent: 5849125 (1998-12-01), Clark
patent: 5867451 (1999-02-01), Chang et al.

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