Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1988-02-29
1990-03-27
Tarcza, Thomas H.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 16, G01V 122
Patent
active
049126849
ABSTRACT:
A communication system for a seismic streamer by which all power and data signals are inductively coupled to the cable leveling devices or instrument pods disposed along the streamer cable. A high permeability ring of magnetic material is dispose around the streamer, and a coil is wound around a segment of the core and connected to circuitry within the bird. The coil can be part of a resonant circuit. Power signals transmitted along the streamer are inductively coupled via the ring core and associated coil to each bird to provide charging of a battery source in the bird. Control signals transmitted along the streamer are coupled via the ring core and coil to the electronics via the ring core and coil to the streamer for transmission to a receiving site. Alternative embodiments are also disclosed in which inductive coupling structures include a portion within the streamer in efficient coupling relationship for power and data transmission.
REFERENCES:
patent: 4093946 (1978-06-01), Fowler
patent: 4375089 (1983-02-01), Thigpen et al.
patent: 4390974 (1983-06-01), Siems
patent: 4631711 (1986-12-01), Fowler
patent: 4709355 (1987-11-01), Woods et al.
Digicourse Inc.
Pihulic Daniel T.
Tarcza Thomas H.
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