CN220708413U - Positioning system based on distributed optical fiber sensing - Google Patents
Positioning system based on distributed optical fiber sensing Download PDFInfo
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- CN220708413U CN220708413U CN202322390822.2U CN202322390822U CN220708413U CN 220708413 U CN220708413 U CN 220708413U CN 202322390822 U CN202322390822 U CN 202322390822U CN 220708413 U CN220708413 U CN 220708413U
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Abstract
The utility model provides a positioning system based on distributed optical fiber sensing, which comprises an optical fiber, wherein a plurality of optical fiber sensors are arranged on the optical fiber, the optical fiber sensors are connected with a unified processor, the unified processor is connected with a monitoring platform, the optical fiber sensors are arranged on a tunnel through a mounting base, and the optical fiber sensors comprise east-west distributed optical fiber sensors and north-south distributed optical fiber sensors; the optical fibers are distributed along the tunnel, the optical fiber sensors connected with the optical fibers are used for detecting information of all positions of the tunnel, the detected information is sent to the monitoring platform for monitoring after being processed by the unified processor, and the east-west distributed optical fiber sensors and the north-south distributed optical fiber sensors can realize two-dimensional detection and can rapidly locate the position of the abnormal position of the tunnel.
Description
Technical Field
The utility model relates to the technical field of optical fiber sensing positioning, in particular to a positioning system based on distributed optical fiber sensing.
Background
Along with the rapid development of economic construction, the construction of the traffic infrastructure in China also enters a rapid development period, and the tunnel can promote the traffic capacity and improve the operation conditions, so that the tunnel becomes an important component of the traffic infrastructure; tunnels are often built in key areas with complex terrains, are important nodes for traffic penetration, and are more difficult to defend against safety risks. The tunnel structure is influenced by various external environmental factors in a long-term service process, so that the defect phenomenon of the tunnel structure can occur; the tunnel engineering has high construction cost, long service period and multiple structural safety influencing factors and is not removable to reconstruct, so that the real-time monitoring and evaluation of the health condition of the tunnel are extremely important.
In the prior art, a plurality of detection devices are used for monitoring the tunnel, but when the tunnel is abnormal, the abnormal position of the tunnel can be known only in a certain area, and the specific position can be known only by checking, so that the maintenance of the tunnel is affected.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a positioning system based on distributed optical fiber sensing, which is helpful for solving the problem that when a tunnel is abnormal, only the abnormal position of the tunnel can be known in a certain area, and the specific position can be known only by checking.
In order to achieve the above purpose, the utility model is realized by the following technical scheme that the positioning system based on distributed optical fiber sensing comprises an optical fiber, wherein a plurality of optical fiber sensors are arranged on the optical fiber, the optical fiber sensors are connected with a unified processor, the unified processor is connected with a monitoring platform, the optical fiber sensors are arranged on a tunnel through a mounting base, and the optical fiber sensors comprise east-west distributed optical fiber sensors and north-south distributed optical fiber sensors.
Through adopting above-mentioned technical scheme, optic fibre distributes along the tunnel, and the optical fiber sensor who is connected with optic fibre is used for detecting the information in each position of tunnel to send the monitoring platform to monitor after the unified processor handles with the detection information again, east-west distributed optical fiber sensor and north-south distributed optical fiber sensor can realize two-dimensional detection, can fix a position the place of tunnel abnormal position fast.
Optionally, the optical fiber is a multicore optical fiber.
By adopting the technical scheme, the multi-core optical fiber can simultaneously transmit various types of optical signals, and the detection result is more accurate by detecting the various optical signals.
Optionally, the multi-core optical fiber includes a wavelength modulation type and a frequency modulation type.
By adopting the technical scheme, the tunnel condition can be detected more accurately by detecting through the wavelength and the frequency.
Optionally, the mounting base is fixed to the tunnel wall by expansion bolts.
Through adopting above-mentioned technical scheme, the mounting base passes through expansion bolts to be fixed, and is fixed firm, and easily installs and dismantles.
Optionally, a plurality of the optical fiber sensors are correspondingly provided with a plurality of warning lamps, the warning lamps are connected with a unified processor, and the unified processor controls the warning lamps to flash when receiving abnormal models of the optical fiber sensors.
Through adopting above-mentioned technical scheme, after optical fiber sensor detects unusual, unified controller control and optical fiber sensor report to the police to the warning light that corresponds, confirm the position fast and overhaul.
The utility model provides a positioning system based on distributed optical fiber sensing, which has the following beneficial effects:
the utility model provides a positioning system based on distributed optical fiber sensing, optical fibers are distributed along a tunnel, an optical fiber sensor connected with the optical fibers is used for detecting information of each position of the tunnel, and the detected information is sent to a unified processor for processing and then sent to a monitoring platform for monitoring, so that the east-west distributed optical fiber sensor and the north-south distributed optical fiber sensor can realize two-dimensional detection, and the position of an abnormal position of the tunnel can be rapidly positioned;
the utility model provides a positioning system based on distributed optical fiber sensing, wherein a multi-core optical fiber can simultaneously transmit various types of optical signals, and the detection result is more accurate through the detection of the various optical signals.
Drawings
Fig. 1 is a schematic diagram of a positioning system based on distributed optical fiber sensing according to an embodiment of the present utility model.
Fig. 2 is a schematic diagram illustrating the operation of a positioning system based on distributed optical fiber sensing according to an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a mounting base according to an embodiment of the present utility model.
Fig. 4 is a schematic structural view of an expansion bolt according to an embodiment of the present utility model.
Reference numerals illustrate: 1. an optical fiber; 2. an optical fiber sensor; 3. a unified processor; 4. monitoring a platform; 5. a warning light; 6. a mounting base; 7. an expansion bolt mounting hole; 8. an expansion bolt.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are one embodiment of the present utility model, not all other embodiments obtained by those skilled in the art without making creative efforts, and all other embodiments are within the scope of protection of the present utility model.
As shown in fig. 1-2, an embodiment of the utility model provides a positioning system for sensing a distributed optical fiber 1, which comprises the optical fiber 1, wherein a plurality of optical fiber sensors 2 are arranged on the optical fiber 1, the plurality of optical fiber sensors 2 are connected with a unified processor 3, the unified processor 3 is connected with a monitoring platform 4, the optical fiber sensors 2 are arranged on a tunnel through a mounting base 6, and the optical fiber sensors 2 comprise east-west distributed optical fiber sensors and north-south distributed optical fiber sensors.
Referring to fig. 3-4, the optical fiber 1 is a multi-core optical fiber, the multi-core optical fiber comprises a wavelength modulation type and a frequency modulation type, a plurality of optical fiber sensors 2 are connected with the multi-core optical fiber and are connected in parallel to form a distributed optical fiber sensor 2, the optical fiber sensors 2 are placed in a mounting base 6, the mounting base 6 is fixed in a tunnel through an expansion bolt 8, the optical fiber sensors 2 are laid along an optical cable, and after laser pulses are incident into the optical fiber 1, the laser pulses interact with the optical fiber 1 in the propagation process, so that nonlinear scattering including brillouin scattering and full-drawing scattering can occur; because the hidden danger occurs at random positions in the tunnel, the optical fiber sensor 2 sensor head is preferably a mass sensor head, so that continuous release type sensing can be realized, transmission loss is low, and large-range and omnibearing coverage can be realized.
The different optical fiber sensors 2 are distinguished by a time division multiplexing technique, i.e. dividing the time into several time slots, one channel for each time slot. The light source then emits a light pulse, the first reflected light enters the first optical fiber sensor 2, the transmitted light of the light pulse is reflected again into the second optical fiber sensor 2 until the last, so that there is a time difference between the time of incidence and the time of reflection, the time slots are generated, and the pulse returning to carry the measuring signal can be transmitted back to the unified processor 3 according to the different time slots.
In addition, a plurality of warning lamps 5 are correspondingly arranged on the plurality of optical fiber sensors 2, the plurality of warning lamps 5 are connected with the unified processor 3, the unified processor 3 controls the warning lamps 5 to flash when the abnormal model of the optical fiber sensors 2 is received, and after the optical fiber sensors 2 detect abnormality, the unified controller controls the optical fiber sensors 2 to give an alarm to the corresponding warning lamps 5, so that the position is quickly determined and overhauling is performed.
The implementation principle of the embodiment of the utility model is as follows: the optical fibers 1 are distributed along the tunnel, the optical fiber sensors 2 connected with the optical fibers 1 are used for detecting information of all positions of the tunnel, and sending detection information to the monitoring platform 4 for monitoring after being processed by the unified processor 3, and the east-west distributed optical fiber sensors and the north-south distributed optical fiber sensors can realize two-dimensional detection and can rapidly locate the position of the abnormal position of the tunnel.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a positioning system based on distributed optical fiber sensing, its characterized in that, includes optic fibre (1), be provided with a plurality of optical fiber sensor (2) on optic fibre (1), a plurality of optical fiber sensor (2) are connected with unified processor (3), unified processor (3) are connected with monitor platform (4), optical fiber sensor (2) set up on the tunnel through mounting base (6), optical fiber sensor (2) are including east-west distributed optical fiber sensor and north-south distributed optical fiber sensor.
2. A distributed optical fiber sensing based positioning system according to claim 1, characterized in that the optical fiber (1) is a multicore optical fiber.
3. A distributed optical fiber sensing based positioning system according to claim 2, wherein said multi-core optical fiber comprises a wavelength modulation type and a frequency modulation type.
4. A distributed optical fibre sensing based positioning system according to claim 3, characterized in that the mounting base (6) is fixed to the tunnel wall by means of expansion bolts (8).
5. The positioning system based on distributed optical fiber sensing according to claim 4, wherein a plurality of warning lamps (5) are correspondingly arranged on a plurality of optical fiber sensors, the plurality of warning lamps (5) are connected with a unified processor (3), and the unified processor (3) controls the warning lamps (5) to flash when an abnormal model of the optical fiber sensor is received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322390822.2U CN220708413U (en) | 2023-09-04 | 2023-09-04 | Positioning system based on distributed optical fiber sensing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322390822.2U CN220708413U (en) | 2023-09-04 | 2023-09-04 | Positioning system based on distributed optical fiber sensing |
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| Publication Number | Publication Date |
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| CN220708413U true CN220708413U (en) | 2024-04-02 |
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| CN202322390822.2U Active CN220708413U (en) | 2023-09-04 | 2023-09-04 | Positioning system based on distributed optical fiber sensing |
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| CN (1) | CN220708413U (en) |
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2023
- 2023-09-04 CN CN202322390822.2U patent/CN220708413U/en active Active
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