An Observation Method Based on Embedded Optical Fiber Subgrade Subsidence Observation Device
A settlement observation and embedded technology, which is used in measurement devices, surveying and navigation, height/level measurement, etc., can solve the problems of excessive settlement and differential settlement of soft soil foundations, uncomfortable engineering, and difficulty in selecting reference points. and other problems, to achieve the effect of improving air tightness, easy to master, and good linearity
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[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0039] like figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, the embedded optical fiber subgrade settlement observation device includes a fiber grating pressure sensing device 1, a fiber grating temperature sensing device 2, a fiber grating demodulator 4, a terminal receiving device 5, a PVC (polyvinyl chloride) tube 8, a nylon Conduit 6, PE protective tube 7.
[0040] Among them, the basic principle of the fiber Bragg grating pressure sensing device 1 is: the sensitive element optical fiber 17Bragg grating 20 is embed...
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