Filling body transverse deformation on-line monitoring system based on fiber bragg grating sensing
A technology of fiber grating and lateral deformation, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems such as the inability to realize filling body monitoring, achieve good monitoring effect, improve monitoring accuracy, and high measurement accuracy.
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[0050] Example 1:
[0051] An online monitoring system for lateral deformation of a filling body based on fiber grating sensing includes a bidirectional displacement measuring device based on fiber grating sensing, a fixed disk, a coupler, an optical fiber, a mining optical cable, a fiber grating demodulator and a computer system.
[0052] The bidirectional displacement measuring device based on fiber grating sensing includes a casing, an upper cover, a steel pipe, an extension line and two fiber grating displacement sensors; the casing is a hollow cuboid structure without a cover, and a sealing ring is provided at the upper opening position;
[0053] The fiber grating displacement sensor is preferably a rod-type fiber grating sensor, and the fiber grating displacement sensor is fixedly connected to the housing; the housing and the upper cover are connected by bolts; the housing and the upper cover are preferably high-strength stainless steel materials.
[0054] The left and r...
Example Embodiment
[0064] Example 2:
[0065] combine Image 6 As shown, the installation and monitoring method of the filling body lateral deformation online monitoring system based on fiber grating sensing in Embodiment 1 are:
[0066] The first step, according to the specific measurement purpose, cut the extension line of appropriate length, and select a certain number of steel pipes, connect the shell with the steel pipe, the extension line and the fixed disk, and connect the connected bidirectional fiber grating sensor-based sensor. The displacement measuring device is installed in a suitable position;
[0067] The second step is to connect the optical fiber connectors of each arranged bidirectional displacement measuring device based on fiber grating sensing to the optical fiber through the coupler, connect the optical fiber to the mining optical fiber through the coupler, and connect the mining optical cable to the fiber grating demodulator Connect, connect the fiber grating demodulator...
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