| 摘要 |
An element for a drill string including a body with a generally axisymmetric appearance and a wave type communication device installed in the body. The communication device includes a set of antennae including plural antennae distributed at a periphery of the body, about an axis of symmetry thereof, and capable of operating in transmission and in reception, operating electronics capable of organizing transfer of data, in transmission and in reception, an actuator capable of selectively connecting the antennae of the set to the operating electronics, and an antenna monitor configured to regularly evaluate a reception quality parameter for at least one sub-assembly of the set of antennae, to repetitively select one or more antennae of the set as a function of reception quality parameters derived from the sub-assembly and to command the actuator to connect the selected antenna or antennae to the operating electronics. |
