CN220932100U - Bridge health monitoring device based on fiber bragg grating sensor - Google Patents
Bridge health monitoring device based on fiber bragg grating sensor Download PDFInfo
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- CN220932100U CN220932100U CN202322606836.3U CN202322606836U CN220932100U CN 220932100 U CN220932100 U CN 220932100U CN 202322606836 U CN202322606836 U CN 202322606836U CN 220932100 U CN220932100 U CN 220932100U
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- 239000000835 fiber Substances 0.000 title claims abstract description 67
- 238000012806 monitoring device Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 239000013307 optical fiber Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a bridge health monitoring device based on a fiber grating sensor, which comprises parallel steel wires and a fixing mechanism, wherein the fixing mechanism is fixed on the outer side surface of the parallel steel wires, a mounting frame is vertically arranged on the top surface of the fixing mechanism, a first threaded column and a second threaded column are respectively and spirally connected to the top surface of the mounting frame, a first fixing frame and a second fixing frame are movably arranged at the bottom ends of the first threaded column and the second threaded column, a fiber grating cable sensor is arranged at the top end inside the first fixing frame, and a fiber grating temperature and humidity sensor is arranged at the top end inside the second fixing frame. According to the utility model, the fixing mechanism, the mounting frame, the first threaded column, the second threaded column, the first fixing frame and the second fixing frame are arranged for use in a matched manner, so that the fiber bragg grating cable sensor and the fiber bragg grating temperature and humidity sensor are conveniently ensured to be always contacted with the parallel steel wires, and the monitoring accuracy of the fiber bragg grating cable sensor and the fiber bragg grating temperature and humidity sensor is conveniently improved.
Description
Technical Field
The utility model relates to the technical field of optical fiber sensing monitoring, in particular to a bridge health monitoring device based on an optical fiber grating sensor.
Background
The health state of the bridge is monitored in real time, so that potential safety hazards of the bridge can be found in advance, and accidents are avoided. Bridge cables are important components of bridges, and real-time monitoring of cable force, temperature and humidity of the bridge cables is generally required. The traditional sensor for detecting the health state of the bridge cable is still in an electronic sensor, and the sensor has certain limitations, is greatly influenced by environment, needs power supply and has short service life, and is not beneficial to monitoring the state of the bridge cable for a long time. The optical fiber grating sensor is used for replacing an electronic sensor, so that the defects can be avoided, the measuring precision is high, and the state of the bridge cable can be measured more effectively.
The fiber bragg grating sensor has good durability and electromagnetic interference resistance, is suitable for long-term monitoring, and can realize point measurement and quasi-distributed measurement; the wavelength coding can conveniently realize absolute measurement. Fiber bragg grating sensing technology has outstanding advantages in cable force monitoring and cable temperature measurement, but has a plurality of problems in practical engineering application. For example, fiber grating cable force sensors and fiber grating temperature and humidity sensors are easily separated from steel wires, and the accuracy of cable detection is affected.
Therefore, it is necessary to provide a bridge health monitoring device based on a fiber grating sensor to solve the above technical problems.
Disclosure of utility model
The utility model provides a bridge health monitoring device based on a fiber grating sensor, which solves the problems in the background technology.
In order to solve the technical problems, the bridge health monitoring device based on the fiber bragg grating sensor comprises parallel steel wires and a fixing mechanism, wherein the fixing mechanism is fixed on the outer side surface of the parallel steel wires, a mounting frame is vertically arranged on the top surface of the fixing mechanism, a first threaded column and a second threaded column are respectively and spirally connected to the top surface of the mounting frame, a first fixing frame and a second fixing frame are movably arranged at the bottom ends of the first threaded column and the second threaded column, a fiber bragg grating cable sensor is arranged at the top end inside the first fixing frame, and a fiber bragg grating temperature and humidity sensor is arranged at the top end inside the second fixing frame.
Preferably, the fixing mechanism is composed of a first arc-shaped plate and a second arc-shaped plate, one ends of the first arc-shaped plate and the second arc-shaped plate are movably connected through a pin shaft, the other ends of the first arc-shaped plate and the second arc-shaped plate are provided with mounting plates, fixing holes are formed in the surfaces of the mounting plates, and the first arc-shaped plate and the second arc-shaped plate penetrate through the fixing holes through fasteners to be fixedly connected.
Preferably, the inner diameter of the circle surrounded by the first arc-shaped plate and the second arc-shaped plate is equal to the outer diameter of the parallel steel wires.
Preferably, a wireless demodulation system is arranged at the top end inside the mounting frame, and the wireless demodulation system comprises a fiber bragg grating adjusting module and a DTU module.
Preferably, the wireless demodulation system is connected with an upper computer.
Preferably, the top ends of the first threaded column and the second threaded column are provided with a hand wheel.
Compared with the related art, the bridge health monitoring device based on the fiber bragg grating sensor has the following beneficial effects:
1. Compared with the prior art, bridge health monitoring device based on fiber grating sensor, through setting up fixed establishment, the mounting bracket, first screw thread post, the second screw thread post, first mount, the cooperation of second mount is used, be convenient for guarantee fiber grating cable sensor and fiber grating temperature and humidity sensor contact with parallel steel wire all the time, be convenient for improve the accuracy of its monitoring, make when the operation, the staff fix fixed establishment on parallel steel wire earlier, later detect fiber grating cable sensor and fiber grating temperature and humidity sensor and fix on first mount and second mount, later manual rotatory hand wheel, then drive first screw thread post and second screw thread post rotatory, thereby drive fiber grating cable sensor and fiber grating temperature and humidity sensor and parallel steel wire contact can, this mode easy operation, be convenient for guarantee fiber grating cable sensor and fiber grating temperature and humidity sensor and parallel steel wire contact all the time, thereby improve the accuracy of monitoring.
Drawings
FIG. 1 is a schematic diagram of a bridge health monitoring device based on a fiber grating sensor;
FIG. 2 is a schematic structural diagram of a fixing mechanism of a bridge health monitoring device based on a fiber grating sensor;
fig. 3 is a schematic structural diagram of a second fixing frame of the bridge health monitoring device based on the fiber bragg grating sensor;
Fig. 4 is a partial flow chart of the bridge health monitoring device based on the fiber bragg grating sensor.
Reference numerals in the drawings:
1. Parallel steel wires; 2. a fixing mechanism; 3. a mounting frame; 4. a first threaded post; 5. a second threaded post; 6. a wireless demodulation system; 7. a fiber bragg grating temperature and humidity sensor; 8. the second fixing frame; 9. fiber bragg grating cable sensor; 10. a first fixing frame; 11. a mounting plate; 12. a fastener; 13. a first arcuate plate; 14. a second arcuate plate; 15. the optical fiber grating adjusting module; 16. a DTU module; 17. and an upper computer.
Detailed Description
The utility model will be further described with reference to the drawings and embodiments.
First embodiment
Please refer to fig. 1-4 in combination. Bridge health monitoring device based on fiber grating sensor, including parallel steel wire 1 and fixed establishment 2, fixed establishment 2 is fixed at parallel steel wire 1 outside surface, the vertical mounting bracket 3 of installing of fixed establishment 2 top surface, the 3 top surface of mounting bracket is screwed connection respectively has first screw thread post 4 and second screw thread post 5, first screw thread post 4 and second screw thread post 5 bottom movable mounting have first mount 10 and second mount 8, the inside top of first mount 10 is provided with fiber grating cable sensor 9, the inside top of second mount 8 is provided with fiber grating temperature and humidity sensor 7.
Through setting up fixed establishment 2, mounting bracket 3, first screw thread post 4, second screw thread post 5, first mount 10, the cooperation of second mount 8 is used, be convenient for guarantee fiber bragg grating cable sensor 9 and fiber bragg grating temperature and humidity sensor 7 contact with parallel steel wire 1 all the time, be convenient for improve the accuracy of its monitoring, make when operating, the staff fix fixed establishment 2 on parallel steel wire 1 earlier, later detect fiber bragg grating cable sensor 9 and fiber bragg grating temperature and humidity sensor 7 and fix on first mount 10 and second mount 8, later manual rotatory hand wheel, then drive first screw thread post 4 and second screw thread post 5 rotation, thereby drive fiber bragg grating cable sensor 9 and fiber bragg grating temperature and humidity sensor 7 contact with parallel steel wire 1 can, this mode easy operation, be convenient for guarantee fiber bragg grating cable sensor 9 and fiber bragg grating temperature and humidity sensor 7 contact with parallel steel wire 1 all the time, thereby improve the accuracy of monitoring.
The bridge health monitoring device based on the fiber bragg grating sensor provided by the utility model has the following working principle:
When the device is operated, a worker is sleeved on the outer side of the parallel steel wire 1 through the first arc-shaped plate 13 and the second arc-shaped plate 14, then the fixing mechanism 2 and the parallel steel wire 1 are fixed through the fixing holes through the fastener 12, the operation is simple in the mode, the accuracy of bridge monitoring in the later period is convenient to improve, the worker firstly fixes the fixing mechanism 2 on the parallel steel wire 1, then detects whether the fiber grating cable sensor 9 and the fiber grating temperature and humidity sensor 7 are fixed on the first fixing frame 10 and the second fixing frame 8, then manually rotates the hand wheel, then drives the first threaded post 4 and the second threaded post 5 to rotate, and accordingly the fiber grating cable sensor 9 and the fiber grating temperature and humidity sensor 7 are driven to be contacted with the parallel steel wire 1.
Second embodiment
Referring to fig. 1 to 4 in combination, a bridge health monitoring device based on a fiber grating sensor according to a first embodiment of the present application is provided, and a bridge health monitoring device based on a fiber grating sensor according to a second embodiment of the present application is provided. The second embodiment is merely a preferred manner of the first embodiment, and implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the bridge health monitoring device based on the fiber bragg grating sensor provided by the second embodiment of the application is characterized in that the fixing mechanism 2 is composed of the first arc-shaped plate 13 and the second arc-shaped plate 14, one ends of the first arc-shaped plate 13 and the second arc-shaped plate 14 are movably connected through a pin shaft, the other ends of the first arc-shaped plate 13 and the second arc-shaped plate 14 are provided with the mounting plate 11, the surface of the mounting plate 11 is provided with the fixing hole, the first arc-shaped plate 13 and the second arc-shaped plate 14 penetrate through the fixing hole through the fastening piece 12 to be fixedly connected, and by arranging the fixing mechanism 2, when in operation, a worker is sleeved on the outer side of the parallel steel wire 1, and then penetrates through the fixing hole through the fastening piece 12 to fix the fixing mechanism 2 and the parallel steel wire 1.
By adopting the technical scheme, the inner diameter of the circle formed by the first arc-shaped plate 13 and the second arc-shaped plate 14 is equal to the outer diameter of the parallel steel wire 1, and the stability between the fixing mechanism 2 and the parallel steel wire 1 is improved conveniently by the fact that the inner diameter of the circle formed by the first arc-shaped plate 13 and the second arc-shaped plate 14 is equal to the outer diameter of the parallel steel wire 1.
By adopting the technical scheme, the inside top of mounting bracket 3 is provided with wireless demodulation system 6, wireless demodulation system 6 includes fiber grating adjustment module 15 and DTU module 16, wireless demodulation system 6 is connected with host computer 17, through setting up wireless demodulation system 6 for fiber grating cable sensor 9 and fiber grating temperature and humidity sensor 7 monitoring's signal passes through fiber grating adjustment module 15 and transmits for DTU module 16, then passes through DTU module 16 and transmits for host computer 17 and carry out the analysis can.
By adopting the technical scheme, the top ends of the first threaded column 4 and the second threaded column 5 are provided with the hand wheels, and the driving of the first threaded column 4 and the second threaded column 5 is facilitated by arranging the hand wheels.
It should be noted that, various components used in the document of the present application are standard components, which can be purchased from the market, the specific connection modes of the components adopt conventional means such as mature bolts, rivets and welding in the prior art, the mechanical, the components and the electrical equipment adopt conventional models in the prior art, the circuit connection adopts conventional connection modes in the prior art, and the electrical equipment is communicated with an external safety power supply, and no specific description is made here.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (6)
1. Bridge health monitoring device based on fiber grating sensor, including parallel steel wire (1) and fixed establishment (2), its characterized in that, fixed establishment (2) are fixed on the outside surface of parallel steel wire (1), fixed establishment (2) top surface vertical installation has mounting bracket (3), screw connection has first screw thread post (4) and second screw thread post (5) respectively on mounting bracket (3) top surface, first screw thread post (4) and second screw thread post (5) bottom movable mounting have first mount (10) and second mount (8), first mount (10) inside top is provided with fiber grating cable force sensor (9), second mount (8) inside top is provided with fiber grating temperature and humidity sensor (7).
2. The bridge health monitoring device based on the fiber bragg grating sensor according to claim 1, wherein the fixing mechanism (2) is composed of a first arc-shaped plate (13) and a second arc-shaped plate (14), one end of the first arc-shaped plate (13) and one end of the second arc-shaped plate (14) are movably connected through a pin shaft, the other ends of the first arc-shaped plate (13) and the second arc-shaped plate (14) are provided with a mounting plate (11), a fixing hole is formed in the surface of the mounting plate (11), and the first arc-shaped plate (13) and the second arc-shaped plate (14) penetrate through the fixing hole through a fastener (12) to be fixedly connected.
3. Bridge health monitoring device based on fiber grating sensor according to claim 2, characterized in that the inner diameter of the first arc-shaped plate (13) and the second arc-shaped plate (14) enclosed into a circle is equal to the outer diameter of the parallel steel wires (1).
4. Bridge health monitoring device based on fiber grating sensor according to claim 1, characterized in that the inside top of the mounting frame (3) is provided with a wireless demodulation system (6), the wireless demodulation system (6) comprises a fiber grating adjusting module (15) and a DTU module (16).
5. The bridge health monitoring device based on the fiber bragg grating sensor according to claim 4, wherein the wireless demodulation system (6) is connected with an upper computer (17).
6. The bridge health monitoring device based on the fiber bragg grating sensor according to claim 1, wherein the top ends of the first threaded column (4) and the second threaded column (5) are provided with handwheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322606836.3U CN220932100U (en) | 2023-09-25 | 2023-09-25 | Bridge health monitoring device based on fiber bragg grating sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322606836.3U CN220932100U (en) | 2023-09-25 | 2023-09-25 | Bridge health monitoring device based on fiber bragg grating sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220932100U true CN220932100U (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322606836.3U Active CN220932100U (en) | 2023-09-25 | 2023-09-25 | Bridge health monitoring device based on fiber bragg grating sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220932100U (en) |
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2023
- 2023-09-25 CN CN202322606836.3U patent/CN220932100U/en active Active
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