OPTICAL SENSING SYSTEM WITH REDUNDANT INPUT AND OUTPUT TREES
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United States of America Patent
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Issued Date -
Jun 27, 2013
app pub date -
Apr 20, 2011
filing date -
Oct 29, 2009
priority date (Note) -
Abandoned
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Abstract
An optical sensing system, comprising a plurality of optical sensors (206 . . . 209), first (203 . . . 205) and second (215, 216) input trees, and first (210 . . . 212) and second (219, 220) output trees. The first and second input trees are configured to direct respective optical signals from a first (202) and a second (214) input to each of the sensors, and the first and second output trees are configured to direct optical signals from each of the sensors (206 . . . 209) to a first (213) and a second (221) optical output. The first and second input and/or output trees are configured to direct signals of particular wavelengths (A1 . . . D-1, A2 . . . D2) from particular sensors to the first and second input and/or output, respectively. A redundant connection system thus provided allows continued operation in the event of a fibre or cable break (300).
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