Optical fiber brag sensing network having survivable guarantee
An optical fiber sensing and network technology, applied in the direction of optical fiber transmission, ring network, transmission system, etc., to achieve the effect of reducing power loss and loss
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[0018] 1, an optical fiber sensor network includes at least a first-level subnet 14 and a second-level subnet 15, which is characterized in that the first-level subnet 14 and / or the second-level subnet 15 use subnet modules, Referring to Figure 3, the subnet module includes a master node 1 and at least two slave nodes 3. The master node 1 is connected to the slave node 3 through a transmission branch 2 respectively, and a sensing branch is connected between adjacent slave nodes 3 4. The output end of the slave node in the first-level subnet 14 is connected to the input end of the master node in the second-level subnet 15, and the optical switch 12 is connected to the optical sensor signal feedback end of the master node in the subnet of each level. In addition, the optical sensor signal feedback terminals of the master nodes in the sub-networks at all levels are respectively connected to the input terminals of the optical switch 12.
[0019] The above-mentioned master node 1 can a...
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