Slope monitoring multi-point displacement sensor based on fiber bending loss
A technology of displacement sensor and bending loss, which is applied in the direction of instruments, measuring devices, optical devices, etc., can solve the problems of inability to realize distributed multi-point displacement measurement of landslide bodies, inconvenient installation and use on site, and easy to be affected by the environment, etc., to achieve Low cost, easy to install on site, easy to operate
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Embodiment 1
[0026] Embodiment 1: as Figure 1-3 As shown, a multi-point displacement sensor for slope monitoring based on optical fiber bending loss includes four displacement sensing units, and each displacement sensing unit includes a protective cover 1, a right-connected outgoing optical fiber 2, an upper top plate 3, and a capillary steel pipe 4. Guide groove hole 5, base material 6, lower bottom plate 7, left connection lead-out optical fiber 8, fiber lead-out hole 9, bolt 10, anchor head 11 and optical fiber bowknot modulation mechanism 12;
[0027] Wherein the protective cover 1 is connected with the upper end top plate 3 by bolts 10; the base material 6 is bonded with the upper end top plate 3 and the lower end base plate 7 by superglue; The heads 11 are all fixed on the lower bottom plate 7, and the upper end passes through the upper top plate 3; the optical fiber bowknot modulating mechanism 12 is placed in the protective cover 1, connected with the upper end of the capillary st...
Embodiment 2
[0036] Embodiment 2: A multi-point displacement sensor for slope monitoring based on optical fiber bending loss, including four displacement sensing units connected in series in turn, each displacement sensing unit includes a protective cover 1, Right connection leading out optical fiber 2, upper top plate 3, capillary steel pipe 4, guide groove hole 5, base material 6, lower bottom plate 7, left connecting leading optical fiber 8, optical fiber leading hole 9, bolt 10, anchor head 11 and optical fiber bowknot modulation mechanism 12 ; The concrete connection relationship of each part is the same as embodiment 1.
[0037] The four displacement sensing units (1#~4#) are serially connected in series through their respective left-connected outgoing optical fibers 8 and right-connected outgoing optical fibers 2. A multi-point displacement sensor is formed, and a plurality of displacement sensing units connected in series are tied together by a steel wire rope 13, and put into the ...
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