Simplified roll along switching

Details Simplified roll along switching Simplified roll along switching

1979-07-09

1981-12-29

Birmiel, Howard A.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 59, 367 63, 370 80, 370113, 307243, G01V 122

Patent

active

043085989

ABSTRACT:
A seismic prospecting roll along switch incorporating electronically controlled switches in an improved switch arrangement requiring far fewer switches than previous systems. In a simple form, one switch is provided for each geophone input with one contact of each switch connected to one of the inputs and the other contact of each switch connected in pairs, appropriately selected, to the inputs of amplifier and filter channels. A controller is provided for electronically closing the appropriate switches for each roll along position. In most roll along positions geophone inputs are connected out of order to the signal processing channels and the sequence is corrected by a modified multiplexer which connects the processing channels to a system analog to digital converter.

REFERENCES:
patent: 3240286 (1966-03-01), Musgrave
patent: 3427475 (1969-02-01), Wilkinson et al.
patent: 3535458 (1970-10-01), Gottfried et al.
patent: 3539983 (1970-11-01), Burg
patent: 4017687 (1977-04-01), Hartzler et al.
patent: 4072923 (1978-02-01), Siems et al.
patent: 4122311 (1978-10-01), Klatt et al.

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