Electronic system for release of on-bottom seismometer unit

Details Electronic system for release of on-bottom seismometer unit Electronic system for release of on-bottom seismometer unit

1983-01-17

1984-05-01

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

G01V 138

Patent

active

044465378

ABSTRACT:
In an on-bottom seismometer, the electronic system for operating the release mechanism includes a plurality of independent power sources. A plurality of release condition sensors each produce a release output upon the occurrence of a condition in which the unit is to be recovered at the water's surface. Logic circuitry responds to the release condition sensors for producing a relase signal which is applied to driving circuits for primary and secondary release devices. Switching means automatically connect the logic circuitry and the driving circuitry to an operable one of the power sources.

REFERENCES:
patent: 3816768 (1974-06-01), Stein
patent: 3835333 (1974-09-01), Balan
patent: 3912940 (1975-10-01), Vince
patent: 3949238 (1976-04-01), Brookes
patent: 4035716 (1977-07-01), Hutchinson
patent: 4138658 (1979-02-01), Avedik et al.
patent: 4209710 (1980-06-01), Quarton
Bookbinder et al., Conference Proceedings, Ocean 78, Wash. D. C., pp. 510-516, Sep. 1978.
Prothero, Jr., Offshore Technology Conference, 1976, Paper, No. Otc2440.

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