An optical fiber vibration detector integrated with a self-calibration module

Abstract

The utility model discloses a kind of optical fiber vibration detector of integrated self-calibration module, including optical fiber vibration detector body, the both sides wall of optical fiber vibration detector body is fixedly connected with mounting piece, the storage mechanism for receiving calibration tool is equipped on the upper end of optical fiber vibration detector body, the storage mechanism includes the storage box being arranged on the optical fiber vibration detector body.The utility model is set up, and optical fiber vibrator, signal generator are integrated in storage box, and pre-completion line connection is unnecessary, additional selection, assembly scattered instrument on site, only need to disassemble first bolt, it can be started calibration to connect extension optical fiber, calibration preparation time is greatly shortened, reduce operation difficulty, solve the problem that traditional calibration process is complicated.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic vibration detector technology, and in particular to a fiber optic vibration detector with an integrated self-calibration module. Background Technology

[0002] Fiber optic vibration detectors are high-precision monitoring devices based on fiber optic sensing technology. They detect changes in the characteristics of light signals transmitted through optical fibers due to environmental vibrations (such as changes in light intensity, phase, and polarization state), enabling accurate detection, location, and analysis of vibration events. They are widely used in perimeter security, industrial equipment monitoring, and transportation infrastructure protection.

[0003] Traditional fiber optic vibration detector calibration suffers from significant technical drawbacks: the calibration process requires separate dedicated instruments such as fiber optic vibrators and signal generators, which are scattered and have inconsistent interface specifications. On-site calibration necessitates a series of assembly operations, including instrument selection, interface matching, wiring, and equipment fixation, making the process cumbersome, time-consuming, and labor-intensive. Furthermore, on-site assembly is prone to signal distortion due to improper operation (such as poor interface contact, unreasonable wiring layout, or unstable vibration source fixation), affecting calibration accuracy. Moreover, the scattered instruments are inconvenient to carry and are prone to omissions, damage, and other issues. To address these problems, this invention proposes a fiber optic vibration detector with an integrated self-calibration module. Utility Model Content

[0004] The main objective of this invention is to provide an optical fiber vibration detector with an integrated self-calibration module, which can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An integrated self-calibration module fiber optic vibration detector includes a fiber optic vibration detector body. Mounting components are fixedly connected to both side walls of the fiber optic vibration detector body. A storage mechanism for storing calibration tools is provided at the upper end of the fiber optic vibration detector body. The storage mechanism includes a storage box disposed on the fiber optic vibration detector body. A placement plate is fixedly connected to the inner wall of the storage box. A fiber optic vibrator and a signal generator are disposed at the upper end of the placement plate. Two first bolts are threaded through the side wall of the mounting components and connected to the storage box. A protective mechanism for protecting the fiber optic vibrator and signal generator is provided on the side wall of the storage box.

[0007] Preferably, the protective mechanism includes a fixing block fixedly connected to the side wall of the storage box, a rotating shaft rotatably connected to the side wall of the fixing block, a box cover fixedly connected to the side wall of the rotating shaft, a mounting ear fixedly connected to the side wall of the box cover, and a fixing ear fixedly connected to the side wall of the storage box.

[0008] Preferably, the placement plate has an inverted U-shaped cross-section, and the upper end of the placement plate has multiple heat dissipation holes.

[0009] Preferably, the upper end of the placement plate is provided with a plurality of fasteners, and the side wall of the fasteners is provided with a second bolt.

[0010] Preferably, a plurality of limiting blocks are fixedly connected to the upper end of the placement plate, and the box cover is made of plastic.

[0011] Preferably, a handle is fixedly connected to the lower end of the lid, and an anti-slip sleeve is fitted on the side wall of the handle.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This device integrates the fiber optic vibrator and signal generator into the storage box, and the wiring is pre-connected. There is no need to select or assemble the distributed instruments on site. Calibration can be started simply by removing the first bolt and connecting the extension fiber. This greatly shortens the calibration preparation time, reduces the difficulty of operation, and solves the problem of the cumbersome traditional calibration process.

[0014] 2. This device is equipped with a protective mechanism. The protective structure of the cover, fixing ears, and mounting ears can effectively prevent dust, moisture, and collisions, extend the service life of the calibration instrument, and solve the problems of traditional dispersed instruments being inconvenient to carry and easily damaged.

[0015] 3. This device is equipped with fasteners, etc., which precisely fix the fiber optic vibrator and signal generator through fasteners, second bolts and limit blocks. This avoids calibration signal distortion caused by poor interface contact, line pulling and vibration source offset during on-site assembly, ensuring the consistency of calibration parameters and improving the reliability of calibration results. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an optical fiber vibration detector with an integrated self-calibration module proposed in this utility model;

[0017] Figure 2 This is a side view of an optical fiber vibration detector with an integrated self-calibration module proposed in this utility model.

[0018] Figure 3 This is another side view of an optical fiber vibration detector with an integrated self-calibration module proposed in this utility model;

[0019] Figure 4 This is a bottom view of an optical fiber vibration detector with an integrated self-calibration module proposed in this utility model.

[0020] In the diagram: 1. Fiber optic vibration detector body, 2. Storage box, 3. Fixing block, 4. Box cover, 5. Mounting component, 6. First bolt, 7. Fiber optic vibrator, 8. Placement plate, 9. Signal generator, 10. Rotating shaft, 11. Mounting ear, 12. Fixing ear, 13. Fixing component, 14. Second bolt, 15. Limiting block, 16. Handle, 17. Anti-slip sleeve. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-4 As shown, an integrated self-calibration module fiber optic vibration detector includes a fiber optic vibration detector body 1. Mounting components 5 are fixedly connected to both side walls of the fiber optic vibration detector body 1. A storage mechanism for storing calibration tools is provided at the upper end of the fiber optic vibration detector body 1. The storage mechanism includes a storage box 2 mounted on the fiber optic vibration detector body 1. A placement plate 8 is fixedly connected to the inner wall of the storage box 2. A fiber optic vibrator 7 and a signal generator 9 are located at the upper end of the placement plate 8. Two first bolts 6 penetrate the side wall of the mounting component 5 and are threadedly connected to the storage box 2. An extension fiber is connected to the input and output ports of the fiber optic vibrator 7. The output end of the signal generator 9 is connected to the SMA modulation port of the fiber optic vibrator 7 via a wire.

[0023] The storage box 2 has a protective mechanism on its side wall for protecting the fiber optic vibrator 7 and the signal generator 9. The protective mechanism includes a fixing block 3 fixedly connected to the side wall of the storage box 2, a rotating shaft 10 rotatably connected to the side wall of the fixing block 3, a box cover 4 fixedly connected to the side wall of the rotating shaft 10, a mounting ear 11 fixedly connected to the side wall of the box cover 4, and a fixing ear 12 fixedly connected to the side wall of the storage box 2. Locks can be locked on the mounting ear 11 and the fixing ear 12.

[0024] In this invention, the cross-section of the placement plate 8 is an inverted U-shape, and multiple heat dissipation holes are provided at the upper end of the placement plate 8, so that the bottom of the fiber optic vibrator 7 and the signal generator 9 can also dissipate heat.

[0025] In this utility model, the upper end of the placement plate 8 is provided with multiple fixing parts 13, and the side wall of the fixing part 13 is provided with a second bolt 14, so that the fiber optic vibrator 7 and the signal generator 9 can be disassembled for easy maintenance.

[0026] In this utility model, multiple limiting blocks 15 are fixedly connected to the upper end of the placement plate 8, and the box cover 4 is made of plastic, which can play a positioning role for placing the fiber optic vibrator 7 and the signal generator 9 on the placement plate 8.

[0027] In this utility model, a handle 16 is fixedly connected to the lower end of the cover 4. The handle 16 provides a convenient grip for the operator. Whether the storage box 2 is removed from the fiber optic vibration detector body 1 or transferred to a desktop or other operating platform, there is no need to directly contact the main body of the device, thus avoiding contamination of the interfaces of the fiber optic vibrator 7 and the signal generator 9 by dirt and sweat from the hands. The side wall of the handle 16 is fitted with an anti-slip sleeve 17. The anti-slip sleeve 17 is made of elastic rubber and has an anti-slip texture on the surface, which can greatly increase the friction between the hand and the handle 16, effectively preventing slippage when gripping. Especially in outdoor humid environments or during long-term operation, it improves the safety and comfort of operation. At the same time, the anti-slip sleeve 17 can also cushion the pressure when gripping and reduce hand fatigue.

[0028] In use, the fiber optic vibration detector body 1 is first fixed to the preset monitoring position (such as a perimeter protection wall, equipment bracket, etc.) using the mounting component 5. The storage box 2 is threadedly connected to the mounting component 5 by the first bolt 6 to achieve integrated fixation with the fiber optic vibration detector body 1. The fiber optic vibrator 7 and the signal generator 9 are pre-placed on the placement plate 8 and positioned by the limit block 15, clamped and fixed by the fixing component 13 and the second bolt 14. The output end of the signal generator 9 is connected to the SMA modulation port of the fiber optic vibrator 7 through the wire to complete the pre-assembly of the calibration instrument. The box cover 4 is closed, and the rotation of the rotating shaft 10 makes the box cover 4 tightly cover the opening of the storage box 2 to protect the internal equipment. The mounting ears 11 and the fixing ears 12 can be locked with locks, and then the daily monitoring state can be entered.

[0029] After use, when calibrating the fiber optic vibration detector body 1, first unscrew the multiple first bolts 6 to release the fixing relationship between the mounting part 5 and the storage box 2, and place the storage box 2 stably on a table or other operating platform; remove the lock, grasp the handle 16 and lift the box cover 4 to expose the fiber optic vibrator 7 and signal generator 9 on the placement plate 8, take out the extension optical fiber connected to the input and output ports of the fiber optic vibrator 7, and insert the two extension optical fibers into the calibration interface of the fiber optic vibration detector body 1 to complete the quick connection of the calibration line. Then start the signal generator 9, and set a specific frequency (such as 10Hz, 100Hz, 1000Hz, etc.) and voltage intensity modulation signal through the signal generator 9 according to the calibration requirements. The modulation signal is transmitted through the conductor. The line transmits to the SMA modulation port of the fiber optic vibrator 7, driving the fiber optic vibrator 7 to generate controllable vibrations with corresponding parameters. This vibration is transmitted through the extended fiber to the sensing fiber inside the fiber optic vibration detector body 1, causing the sensing fiber to produce a preset mechanical deformation, which in turn leads to a change in the optical signal transmission characteristics. The photodetector inside the fiber optic vibration detector body 1 captures the changed optical signal, converts it into an electrical signal, and then analyzes it through the signal processing unit. It is compared with the preset standard vibration parameters to complete the self-calibration process. After calibration, the extended fiber is pulled out, the fiber optic vibrator 7 and the signal generator 9 are placed back in the fixed position of the placement plate 8, the box cover 4 is closed, and the storage box 2 is re-fixed to the mounting part 5 by the first bolt 6, completing the entire calibration operation.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fiber optic vibration detector with an integrated self-calibration module, comprising a fiber optic vibration detector body (1), characterized in that, The optical fiber vibration detector body (1) has mounting parts (5) fixedly connected to both sides of its two walls. The upper end of the optical fiber vibration detector body (1) is provided with a storage mechanism for storing calibration tools. The storage mechanism includes a storage box (2) set on the optical fiber vibration detector body (1). The inner wall of the storage box (2) is fixedly connected with a placement plate (8). The upper end of the placement plate (8) is provided with an optical fiber vibrator (7) and a signal generator (9). The side wall of the mounting part (5) is provided with two first bolts (6). The first bolts (6) are threadedly connected to the storage box (2). The side wall of the storage box (2) is provided with a protective mechanism for protecting the optical fiber vibrator (7) and the signal generator (9).

2. The fiber optic vibration detector with an integrated self-calibration module according to claim 1, characterized in that, The protective mechanism includes a fixing block (3) fixedly connected to the side wall of the storage box (2), a rotating shaft (10) rotatably connected to the side wall of the fixing block (3), a box cover (4) fixedly connected to the side wall of the rotating shaft (10), an mounting ear (11) fixedly connected to the side wall of the box cover (4), and a fixing ear (12) fixedly connected to the side wall of the storage box (2).

3. The fiber optic vibration detector with an integrated self-calibration module according to claim 2, characterized in that, The placement plate (8) has an inverted U-shaped cross section, and multiple heat dissipation holes are provided at the upper end of the placement plate (8).

4. The fiber optic vibration detector with an integrated self-calibration module according to claim 3, characterized in that, The upper end of the placement plate (8) is provided with multiple fasteners (13), and the side wall of the fasteners (13) is provided with a second bolt (14).

5. A fiber optic vibration detector with an integrated self-calibration module according to claim 4, characterized in that, The upper end of the placement plate (8) is fixedly connected with multiple limiting blocks (15), and the box cover (4) is made of plastic.

6. The fiber optic vibration detector with an integrated self-calibration module according to claim 5, characterized in that, The lower end of the lid (4) is fixedly connected to a handle (16), and the side wall of the handle (16) is fitted with an anti-slip sleeve (17).

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