Patent ID: 7869443

Claim:
A data acquisition device for seismic applications including a wireless network comprising: a first assembly of first active nodes, a concentrator for organizing in a controlled manner a routing of data and/or commands within the first assembly of first active nodes according to a TDMA mode of transmission of data and/or of commands, in which the transmission of data and/or of commands is done in first time slots, a second assembly of second peripheral nodes, wherein the second peripheral nodes operate in a CSMA mode of transmission of data and/or of commands, wherein the concentrator has means to allocate dedicated first time slots to each of the first active nodes to transmit data and/or commands between the first active nodes in said TDMA mode, and wherein the concentrator has means for allocating second time slots to transmit data and/or commands between the second peripheral nodes and the first active nodes, wherein the transmission of data and/or of commands between the second peripheral nodes and the first active nodes is done in said CSMA mode during said second time slots which are temporally separated from said dedicated first time slots; wherein the transmission of data and/or commands according to said TDMA mode in said first time slots occurs on the same channel of said wireless network as the transmission of data and/or commands according to said CSMA mode during said second time slots.