Method and apparatus for data acquisition and transport

Details Method and apparatus for data acquisition and transport Method and apparatus for data acquisition and transport

1979-11-30

1981-11-17

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

370 86, 370 88, 367 76, G01V 122

Patent

active

043015212

ABSTRACT:
A data acquisition and transport system including a plurality of array terminals, each array terminal having a plurality of geophones delivering analog signals thereto, the analog signals being digitized to 1-bit and temporarily stored, and on demand, transmitted downline to a recording station, as a train of 1-bit pulses. The array terminals have two identical ports into which cable segments of two conductor digital transmission channels can be plugged. Means are provided in the recording station to place a DC potential between the two terminals of the digital transmission channel. In the array terminals means are provided for identifying which of the two identical ports is the one which receives the DC potential, which is identified as the downline port. On receiving a DC potential at the downline port, a corresponding DC potential is transmitted through the upline port to the next array terminal and so on. Means are provided for amplifying, digitizing to 1 bit, storing, and transmitting to the recording station the plurality of analog signals received from the geophones connected to an array terminal. Means are also provided for receiving trains of digital pulses from each of the upline array terminals at the upline port, storing them in shift registers, and then transmitting from the shift registers through the downline port, to the next downline array terminal.

REFERENCES:
patent: 3786418 (1974-01-01), Nick
patent: 3986162 (1976-10-01), Chalez et al.
patent: 4140993 (1979-02-01), Carter
patent: 4146872 (1979-03-01), Carter
patent: 4148006 (1979-04-01), Kelm
patent: 4201890 (1980-05-01), Lawrence et al.

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