BOTTOMHOLE SWITCHBOARD Russian patent published in 2015 - IPC H04L12/00 E21B47/00 

FIELD: measurement equipment.

SUBSTANCE: invention relates to drilling equipment, namely, to devices of sensor switching, which measure drilling parameters directly in process of drilling within a telemetering system. The device comprises a body and contact elements, is located inside a drilling pipe and made in the form of a jet element, including a supply balloon with compressed gas, a jet unit of command signal generation, jet triggers with a count input, jet units of inverters, jet logical elements "AND" and "OR" and a jet unit of output signal generation, besides, the output of the jet unit of command signal generation is connected with the input of jet triggers, outputs of which are connected with inputs of the jet unit of inverters, and outputs of inverters are connected with inputs of jet logical elements "AND" connected to outlets of bottomhole sensors, outputs of elements "AND" are connected with inputs of the logical element "OR", the output of which is connected to the input of the jet unit of output signal generation.

EFFECT: increased reliability of bottomhole sensor switching within a telemetering system.

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