Patent ID: 8339899
Filing Date: 2012-12-25
Classification: G01V

Abstract:
1. A seismic data acquisition system comprising: a central processing unit; a cabled network connected to said central processing unit comprising a plurality of acquisition lines each comprising: electronic units assembled in series along a telemetry cable and each associated with at least one seismic sensor, said units processing signals transmitted by said sensor(s); intermediate modules assembled in series along said telemetry cable and each associated with at least one of said electronic units, each intermediate module providing power supply and synchronisation to said electronic unit(s) wherewith it is associated; wherein each electronic unit is associated with at least two intermediate modules including at least one upstream and at least one downstream from said electronic unit along said telemetry cable, each intermediate module comprising: autonomous synchronisation means independent from said central processing unit; bidirectional and autonomous power supply means so as to power at least one unit upstream from said intermediate module and/or at least one unit downstream from said intermediate module; and means for storing said signals processed by said electronic units, said storage means being bidirectional so as to store the signals from at least one unit upstream from said intermediate module and/or at least one unit downstream from said intermediate module.