CN218895777U - Metal sheet type flexible sensor - Google Patents
Metal sheet type flexible sensor Download PDFInfo
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- CN218895777U CN218895777U CN202222794650.0U CN202222794650U CN218895777U CN 218895777 U CN218895777 U CN 218895777U CN 202222794650 U CN202222794650 U CN 202222794650U CN 218895777 U CN218895777 U CN 218895777U
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- optical fiber
- fiber grating
- metal sheet
- sheath
- flexible sensor
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Abstract
The utility model discloses a sheet metal type flexible sensor, which comprises: the optical fiber cable splicing device comprises a metal sheet body, wherein the surface of the metal sheet body is provided with a positioning center line and an optical fiber grating is arranged on the upper portion of the positioning center line, the optical fiber grating is fixed by an optical fiber fusion splicer, a sheath is arranged on the surface of the optical fiber grating and sleeved on the surface of the optical fiber grating, and two ends of the optical fiber grating are respectively provided with a connecting end and a jumper wire connected with the side face of the connecting end. The utility model uses a wire stripper to strip the coating layer of the fiber grating, uses a measuring scale to measure the required cutting position, uses a fiber cutter to cut, uses a fiber fusion splicer to fuse two cut flat sections, at the moment, two measuring points are connected in series, other measuring points are connected in series in this way, the manufactured fiber grating is attached to the surface of a metal sheet along a positioning center line, a sheath is arranged on the surface of the fiber grating, and the fiber grating is fixed by a fixing adhesive tape, so that the metal sheet type sensor is formed.
Description
Technical Field
The utility model relates to the technical field of building measurement, in particular to a metal sheet type flexible sensor.
Background
Dead weight stress caused by the self gravity of soil exists in the foundation before building and geotechnical building are constructed. The load of the building and the geotechnical building is transmitted to the foundation through the bottom surface of the foundation or the embankment, so that the original stress state of the natural soil layer is changed, and under the action of the additional three-dimensional stress component, vertical, lateral and shearing deformation are generated in the foundation, so that the vertical and lateral displacement of each point is caused. Vertical deformation of the foundation surface is referred to as foundation settlement, or foundation settlement.
Accurate data cannot be objectively and accurately measured on the internal strain of the soil caused by the settlement and deformation of the soil. Therefore, a new solution is needed.
Disclosure of Invention
The utility model aims to provide a sheet metal type flexible sensor, which solves the problem that the internal strain of a soil body caused by the settlement and deformation of the soil body cannot objectively and accurately measure accurate data.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a sheet metal flexible sensor comprising: the optical fiber cable modem comprises a metal sheet body, wherein the surface of the metal sheet body is provided with a positioning center line, the upper part of the positioning center line is provided with an optical fiber grating, the optical fiber grating is fixed by an optical fiber fusion splicer, a sheath is arranged on the surface of the optical fiber grating, the sheath is sleeved on the surface of the optical fiber grating, two ends of the optical fiber grating are respectively provided with a connecting end, the side faces of the connecting ends are connected with a jumper, and the jumper is connected with the optical fiber grating demodulator.
As a preferred embodiment of the present utility model, the sheet metal body is provided with two kinds and has a thickness of 0.4mm and 0.5mm, respectively.
As a preferred embodiment of the present utility model, positioning edges are provided at the surface edges of the sheet metal body and are distributed at equal intervals.
As a preferred embodiment of the present utility model, the surface of the sheath is provided with a fixing adhesive tape, and the sheath is fixedly connected with the metal body sheet through the fixing adhesive tape.
Compared with the prior art, the utility model has the following beneficial effects:
the method comprises the steps of positioning a side line at a position mark of an FBG measuring point on a metal sheet in advance, marking a positioning center line at the center position of the metal sheet, stripping a coating layer of an optical fiber grating by using a wire stripper, measuring a required cutting position by using a measuring scale, cutting by using an optical fiber cutter, welding two cut flat sections by using an optical fiber welder, connecting the two measuring points in series at the moment, connecting other measuring points in series in this way, attaching the manufactured optical fiber grating to the surface of the metal sheet along the positioning center line, arranging a sheath on the surface of the metal sheet, fixing the sheath by using a fixed adhesive tape, forming a metal sheet type sensor, connecting jumper wires on the metal sheet type sensors on the upper side and the lower side with an optical fiber grating demodulator, connecting the sensor with 10 measuring points corresponding to a computer end data acquisition system, checking whether each wavelength is normal or not, starting monitoring after cutting is finished, loading can be started, and the adopted metal sheet type flexible sensor takes the optical wave as a carrier, and the optical fiber as a transmission medium.
Drawings
FIG. 1 is a schematic diagram of a sheet metal sensor according to the present utility model;
fig. 2 is a schematic view of a sheet metal sensor arrangement of the present utility model.
In the figure: 1. a metal sheet; 2. positioning a midline; 3. positioning a side line; 4. a sheath; 5. fixing the adhesive tape; 6. an optical fiber grating; 7. a connection end; 8. jumper wire
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, the present utility model provides a technical solution: a sheet metal flexible sensor comprising: the metal sheet body 1, the surface of metal sheet body 1 is provided with location central line 2 and the upper portion of location central line 2 is provided with fiber bragg grating 6, fiber bragg grating 6 is fixed it through the optical fiber fusion splicer, the surface of fiber bragg grating 6 is provided with sheath 4 and sheath 4 cup joints on the surface of fiber bragg grating 6, the both ends of fiber bragg grating 6 all are provided with link 7 and link 7's side is connected with jumper 8, be connected between jumper 8 and the fiber bragg grating demodulator, the metal sheet formula flexible sensor who adopts uses the light wave as the carrier, and the fiber is the change of the parameter of sensing medium that is surveyed through fiber bragg grating 6 cycle and the central wavelength skew that the change of refracting index leads to realize the sensing, will arouse fiber bragg grating 6 self change when external stress temperature changes, and the demodulator analyzes out fiber bragg grating 6 reflection wavelength's drift volume, and then obtains the strain that external pressure or temperature lead to, has solved the problem that the soil body internal strain that the soil body subsided deformation leads to can't objectively accurate measurement data.
Further improved, as shown in fig. 2: the sheet metal body 1 is provided with two kinds and has a thickness of 0.4mm and 0.5mm, respectively.
Further improved, as shown in fig. 1: the surface edge of the metal sheet body 1 is provided with positioning edge lines 3, and the positioning edge lines 3 are distributed at equal intervals, so that the optical fiber cable can be conveniently positioned.
Further improved, as shown in fig. 1: the surface of sheath 4 is provided with fixed sticky tape 5 and sheath 4 passes through fixed connection between fixed sticky tape 5 and the metal body piece, and this kind of setting has guaranteed the fixed stability of sheath 4.
The utility model locates the edge line 3 at the position mark of FBG measuring point on the metal sheet in advance, marks the locating center line 2 at the center position of the metal sheet, peels off the coating layer of the fiber bragg grating 6 with the wire stripper, measures out the required cutting position with the measuring scale, cuts with the fiber cutter, welds two cut flat sections with the fiber welder, two measuring points are already connected in series at this time, other measuring points are also connected in series in this way, the fiber bragg grating 6 finished is affixed to the surface of the metal sheet along the locating center line 2, and set up the sheath 4 on its surface, fix through the fixed adhesive tape 5, so as to form the metal sheet type sensor, cut into the fiber bragg grating 6 demodulator with jumper 8 on the metal sheet type sensor of upper and lower sides, 10 measuring points altogether of the sensor, corresponding to 10 data of a computer-side data acquisition system, checking whether each wavelength is normal or not, starting to monitor after all is ready, loading can be started, the adopted metal sheet type flexible sensor takes light waves as a carrier, the FBG sensing technology taking optical fibers as transmission media senses the parameter change of the measured media through the central wavelength deviation caused by the period and refractive index change of the optical fiber gratings 6, so that the sensing is realized, when the external stress temperature changes, the change of the optical fiber gratings 6 is caused, the demodulator analyzes the drift amount of the reflected light wavelength of the optical fiber gratings 6, and further the strain caused by the external pressure or temperature is obtained, and the problem that the internal strain of the soil caused by the soil settlement deformation cannot objectively and accurately measure the accurate data is solved.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. A sheet metal type flexible sensor, characterized in that: comprising the following steps: the optical fiber cable modem comprises a metal sheet body (1), wherein the surface of the metal sheet body (1) is provided with a positioning center line (2) and the upper part of the positioning center line (2) is provided with an optical fiber grating (6), the optical fiber grating (6) is fixed by an optical fiber fusion splicer, the surface of the optical fiber grating (6) is provided with a sheath (4) and the sheath (4) is sleeved on the surface of the optical fiber grating (6), the two ends of the optical fiber grating (6) are respectively provided with a connecting end (7) and the side face of the connecting end (7) is connected with a jumper wire (8), and the jumper wire (8) is connected with the optical fiber grating modem.
2. A sheet metal type flexible sensor according to claim 1, characterized in that: the sheet metal body (1) is provided with two kinds of sheet metal bodies, and the thickness of the sheet metal bodies is 0.4mm and 0.5mm respectively.
3. A sheet metal type flexible sensor according to claim 1, characterized in that: the surface edge of the metal sheet body (1) is provided with positioning edge lines (3), and the positioning edge lines (3) are distributed at equal intervals.
4. A sheet metal type flexible sensor according to claim 1, characterized in that: the surface of the sheath (4) is provided with a fixing adhesive tape (5), and the sheath (4) is fixedly connected with the metal body sheet through the fixing adhesive tape (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222794650.0U CN218895777U (en) | 2022-10-24 | 2022-10-24 | Metal sheet type flexible sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222794650.0U CN218895777U (en) | 2022-10-24 | 2022-10-24 | Metal sheet type flexible sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218895777U true CN218895777U (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222794650.0U Active CN218895777U (en) | 2022-10-24 | 2022-10-24 | Metal sheet type flexible sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218895777U (en) |
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2022
- 2022-10-24 CN CN202222794650.0U patent/CN218895777U/en active Active
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