公开(公告)号：EP3518440A1

公开(公告)日：2019-07-31

申请号：EP19151713.5

申请日：2019-01-14

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： SOCHA, David Michael ,  RAY, Mark

IPC: H04B10/80

Abstract: Apparatus and associated methods relate to a system (22) for interfacing with an optically-powered sensor (20). The system (22) includes an optical emitter (E; 62) configured to emit a beam of optical energy so as to provide operating power for the optically-powered sensor (20). The system (22) includes an optical detector (D; 64) configured to detect a time sequence of optical pulses generated by the optically-powered sensor (20), the time sequence of pulses modulated between first and second optical power levels. The system (22) includes a parameter extractor (40) configured to determine a value of a sensed parameter based on the time sequence of optical pulses detected by the optical detector (D; 64). The system (22) also includes a power controller (42) configured to control power level of the emitted beam of optical energy based on the first and/or second optical power levels detected by the optical detector (D; 64).