| 摘要 |
A digital seismic sensor (31) adapted to be connected, via a two-conductor line (5), to an acquisition device (30). The digital seismic sensor comprises: a digital sensing mean (311); a local sampling clock (317) providing a sampling frequency; means for receiving (313) command data coming from the acquisition device and synchronization information providing accurate timing information to enable seismic sensor synchronization; means for compensating (312), as a function of the synchronization information, a drift of the local sampling clock; means for transmitting (314) seismic data towards the acquisition device; means for driving (312) the receiving and transmitting means, according to a half-duplex transmission protocol over the two-conductor line and using a transmission clock extracted from the received command data; means for receiving (315) electrical power; and means for coupling (318) the means for receiving command data, the means for transmitting seismic data and the means for receiving electrical power to the two-conductor line. |
