Distributed optical fiber sensor

Abstract

A distributed optical fiber sensor disclosed by the present invention comprises an optical fiber sensor body, a first half frame and a second half frame, the optical fiber sensor body is located in the first half frame and the second half frame, the first half frame and the second half frame are connected through a clamping mechanism, and buffer mechanisms are arranged in the first half frame and the second half frame. Fixing mechanisms are arranged on the first half frame and the second half frame, heat dissipation mechanisms are arranged at the bottoms of the first half frame and the second half frame, the efficient heat dissipation mechanisms are arranged, heat generated in the sensor is rapidly dissipated into the environment, performance reduction caused by high-temperature accumulation is avoided, and meanwhile, the heat dissipation efficiency of the sensor is improved. The heat conduction material and the design form of the cooling fins enable the heat to be uniformly distributed, the cooling effect is further enhanced, the stability and the measurement precision of the sensor in an extreme environment are ensured, the shock resistance and the stability of the sensor after installation are ensured through the design of the buffer mechanism, and the reliability of a measurement result is improved.

Description

Technical Field

[0001] The present invention relates to the field of sensor technology, and in particular to a distributed optical fiber sensor. Background Art

[0002] Distributed fiber optic sensor is a sensor that uses the light wave characteristics in optical fiber to detect and monitor changes in environmental parameters. It is widely used in many fields such as temperature, stress, displacement, etc.

[0003] However, this type of sensor faces some problems in practical applications: First, since the sensor needs to work in extreme environments such as high temperature and high pressure, this will cause high temperature inside the sensor, which may cause damage to the sensor and affect its long-term stability and measurement accuracy; second, during the installation process, the sensor usually needs to be fixed on the surface or inside the structure being measured. When these structures undergo slight deformations, vibrations will occur, causing internal components to be impacted and damaged; finally, due to the high sensitivity of distributed fiber optic sensors and their high frequency of use, their service life is relatively short, and frequent inspection, maintenance and even replacement have become the norm, but the existing design is not convenient for quick disassembly and replacement, further increasing maintenance costs. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a distributed optical fiber sensor.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A distributed optical fiber sensor comprises an optical fiber sensor body, a first half frame and a second half frame, wherein the optical fiber sensor body is located in the first half frame and the second half frame, the first half frame and the second half frame are connected by a snap-on mechanism, a buffer mechanism is provided in the first half frame and the second half frame, a fixing mechanism is provided on the first half frame and the second half frame, and a heat dissipation mechanism is provided at the bottom of the first half frame and the second half frame.

[0007] Preferably, the fixing mechanism comprises two fixing blocks respectively fixedly connected to the outer side walls of the first half frame and the second half frame, the two fixing blocks are symmetrically arranged, a mounting opening is provided on the fixing block, and a fastening bolt is threadedly connected to the inner side wall of the mounting opening.

[0008] Preferably, arc-shaped limiting plates are provided at the top diagonals of the first half frame and the second half frame.

[0009] Preferably, the clamping mechanism includes two plug blocks fixedly connected to the side walls of the second half frame, the two plug blocks are symmetrically arranged, the first half frame is provided with a slot matched with the plug block, the plug block is provided with a built-in groove, a telescopic rod is fixedly connected to the bottom of the built-in groove, a pressing head is fixedly connected to one end of the telescopic rod away from the built-in groove, the first half frame is provided with a pressing port connected to the slot, and the pressing head is matched with the pressing port.

[0010] Preferably, a telescopic spring is sleeved on the outer side wall of the telescopic rod, and two ends of the telescopic spring are respectively fixedly connected to the inner bottom of the built-in groove and the outer side wall of the pressing head.

[0011] Preferably, the buffer mechanism comprises two buffer plates, the two buffer plates are respectively connected to the inner bottom of the first half frame and the second half frame through buffer springs, and the bottoms of the two buffer plates are fixedly connected with a plurality of first heat-conducting columns.

[0012] Preferably, the heat dissipation mechanism includes a cooling cavity opened at the bottom of the first half frame and the second half frame, a plurality of heat conduction ports are opened on the first half frame and the second half frame, a plurality of the first heat conduction columns are respectively inserted into the corresponding heat conduction ports, and a plurality of second heat conduction columns are connected to the bottom of the cooling cavity and are arranged through the cooling cavity.

[0013] Preferably, sealing rings are provided at the connection between the second heat-conducting column and the first half frame and the second half frame.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. The present invention dissipates the heat generated inside the sensor into the environment quickly by setting up an efficient heat dissipation mechanism, thereby avoiding performance degradation caused by high temperature accumulation. At the same time, the thermal conductive material and design of the heat sink enable the heat to be evenly distributed, further enhancing the heat dissipation effect and ensuring the stability and measurement accuracy of the sensor in extreme environments.

[0016] 2. The present invention arranges multiple layers of buffer materials in the first half frame and the second half frame. These buffer materials can effectively absorb vibration energy and protect internal sensitive components. The design of the buffer mechanism ensures the shock resistance and stability of the sensor after installation, extends its service life, and improves the reliability of the measurement results.

[0017] 2. The present invention realizes tool-free rapid assembly and disassembly through the snap-on mechanism. This design not only facilitates on-site maintenance work, reduces maintenance time and cost, but also ensures that the operation is simple and efficient when replacement or inspection is required. Therefore, users can easily complete the maintenance and replacement of sensors without affecting normal monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A three-dimensional diagram of a distributed optical fiber sensor proposed by the present invention;

[0019] Figure 2 A schematic diagram of the structure of a distributed optical fiber sensor proposed by the present invention;

[0020] Figure 3 A schematic diagram of the buffer mechanism structure of a distributed optical fiber sensor proposed by the present invention;

[0021] Figure 4 A schematic diagram of the structure of a card connection mechanism of a distributed optical fiber sensor proposed by the present invention;

[0022] Figure 5 This is a schematic diagram of the first half frame structure of a distributed optical fiber sensor proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of the heat dissipation mechanism structure of a distributed optical fiber sensor proposed in the present invention.

[0024] In the figure: 1. Fiber optic sensor body; 2. First half frame; 3. Second half frame; 4. Arc-shaped limit plate; 5. Fixing block; 6. Fastening bolt; 7. Insert block; 8. Slot; 9. Built-in slot; 10. Telescopic rod; 11. Pressing head; 12. Telescopic spring; 13. Pressing port; 14. Buffer plate; 15. Buffer spring; 16. First heat-conducting column; 17. Heat-conducting port; 18. Cooling chamber; 19. Second heat-conducting column; 20. Sealing ring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Reference Figure 1-Figure 6The present embodiment provides a distributed optical fiber sensor, which includes an optical fiber sensor body 1, a first half frame 2 and a second half frame 3. The optical fiber sensor body 1 is the core part of the entire system and is responsible for the collection and transmission of sensing signals. The optical fiber sensor body 1 is made of highly sensitive optical fiber material and can achieve accurate signal detection over a long distance. The optical fiber sensor body 1 is located in the first half frame 2 and the second half frame 3. The first half frame 2 and the second half frame 3 are connected by a snap-on mechanism. The first half frame 2 and the second half frame 3 have the same geometric shape and size, respectively. The sealing of the entire device is ensured by precise docking. The snap-on mechanism between the two half frames is tightly connected by a group of mutually meshing concave and convex structures. Rapid assembly and disassembly can be completed without additional tools, which greatly facilitates on-site maintenance work. Buffer mechanisms are provided in the first half frame 2 and the second half frame 3, fixing mechanisms are provided on the first half frame 2 and the second half frame 3, and heat dissipation mechanisms are provided at the bottom of the first half frame 2 and the second half frame 3.

[0028] The fixing mechanism includes two fixing blocks 5 which are respectively fixedly connected to the outer side walls of the first half frame 2 and the second half frame 3. The two fixing blocks 5 are symmetrically arranged. A mounting opening is provided on the fixing block 5. The inner side wall of the mounting opening is threadedly connected with a fastening bolt 6, which ensures that the sensor can be stably installed in different environments. Through this symmetrical design and fastening method, the fixing mechanism can effectively resist interference from the external environment. Such an installation process is simple and efficient, and is suitable for a variety of installation environments and conditions.

[0029] Arc-shaped limit plates 4 are provided at the top diagonals of the first half frame 2 and the second half frame 3. The arc-shaped limit plates 4 are fixed at the top diagonals of the first half frame 2 and the second half frame 3, and can be fixed by welding, adhesives or other fasteners. The surface of the arc-shaped limit plates 4 can be specially treated, such as coating with anti-slip materials, to further enhance its limiting function. The arc-shaped limit plates 4 are designed to ensure the stability of the optical fiber in the sensor and prevent the optical fiber from being displaced.

[0030] The clamping mechanism includes two plug blocks 7 fixedly connected to the side walls of the second half frame 3, and the two plug blocks 7 are symmetrically arranged. The first half frame 2 is provided with a slot 8 adapted to the plug block 7, and the plug block 7 is provided with a built-in groove 9. A telescopic rod 10 is fixedly connected to the bottom of the built-in groove 9, and a pressing head 11 is fixedly connected to the end of the telescopic rod 10 away from the built-in groove 9. A pressing port 13 connected to the slot 8 is provided on the first half frame 2, and the pressing head 11 is adapted to the pressing port 13. The built-in groove 9 provides a stable supporting environment for the telescopic rod 10 and the telescopic spring 12, ensuring their stability and reliability during the force-bearing process.

[0031] A telescopic spring 12 is sleeved on the outer wall of the telescopic rod 10, and the two ends of the telescopic spring 12 are fixedly connected to the inner bottom of the built-in groove 9 and the outer wall of the pressing head 11 respectively. Through this structural design, the telescopic rod 10 can be extended and retracted along the axial direction when subjected to force, and the telescopic spring 12 provides elastic support and reset functions. The inner wall of the built-in groove 9 can be designed with a guide structure to further ensure the linear motion of the telescopic rod 10 during extension and retraction, thereby improving the accuracy and reliability of the entire sensor.

[0032] The buffer mechanism includes two buffer plates 14, which are respectively connected to the inner bottom of the first half frame 2 and the second half frame 3 through buffer springs 15. This structure ensures that the buffer plate 14 can alleviate vibration and impact through the expansion and contraction of the spring when subjected to external force, thereby protecting the optical fiber sensor from damage. A plurality of first heat-conducting columns 16 are fixedly connected to the bottom of the two buffer plates 14. These heat-conducting columns can effectively conduct the heat accumulated on the buffer plate 14 to the external environment, ensuring that the temperature of the sensor will not be too high when working for a long time, thereby further improving its stability and reliability.

[0033] The heat dissipation mechanism includes a cooling cavity 18 opened at the bottom of the first half frame 2 and the second half frame 3, and a coolant is arranged in the cooling cavity 18. A plurality of heat conduction ports 17 are opened on the first half frame 2 and the second half frame 3, and a plurality of first heat conduction columns 16 are respectively inserted in the corresponding heat conduction ports 17 to play a good heat conduction role. A plurality of second heat conduction columns 19 are connected to the bottom of the cooling cavity 18 and are arranged through. The design of these second heat conduction columns 19 further enhances the heat dissipation effect, ensuring the stable operation of the entire optical fiber sensor in a high temperature environment.

[0034] Sealing rings 20 are provided at the connection points between the second heat-conducting column 19 and the first half frame 2 and the second half frame 3. This design is intended to ensure that the sensor can maintain a high degree of sealing under various environmental conditions to prevent the entry of moisture or other contaminants.

[0035] The specific working principle of the present invention is as follows:

[0036] During the actual operation, first, the first half frame 2 and the second half frame 3 can be assembled together. The operator can first align the two plug blocks 7 with the slots 8 on the first half frame 2 and insert the second half frame 3. At this time, the pressing head 11 extends through the pressing port 13. The user can press the pressing head 11 to retract the telescopic rod 10, thereby completely inserting the plug block 7 into the slot 8. Once the pressing head 11 is released, the telescopic rod 10 will return to its original position under the action of its own elastic force, and the pressing head 11 will be pushed back into the pressing port 13 to achieve a stable connection between the second half frame 3 and the first half frame 2. If the two half frames need to be separated, just press the pressing head 11 again to disengage the plug block 7 from the slot 8.

[0037] Then fix the two fixing blocks 5 on the outer side walls of the first half frame 2 and the second half frame 3 respectively to ensure that they are symmetrically arranged. Next, screw the fastening bolts 6 into the mounting holes on each fixing block 5 until the fastening bolts 6 are fully in contact with the target mounting surface and firmly connected. Then, the optical fiber sensor body 1 is safely placed in the housing composed of the first half frame 2 and the second half frame 3. The other end of the buffer spring 15 supports the buffer plate 14. Install and insert multiple first heat-conducting columns 16 into the bottom heat-conducting port 17 of the buffer plate 14. The first heat-conducting column 16 is in good contact with the coolant in the cooling cavity 18 to improve the heat conduction efficiency. The second heat-conducting column 19, as one of the key components inside the sensor, is not only responsible for transferring heat, but also plays a fixing and supporting role. This structure can not only provide effective buffering protection during external impact or vibration, but also effectively dissipate heat through the heat-conducting columns, thereby ensuring that the optical fiber sensor can operate stably in various environments.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A distributed optical fiber sensor, comprising an optical fiber sensor body (1), a first half frame (2) and a second half frame (3), characterized in that: The optical fiber sensor body (1) is located in a first half frame (2) and a second half frame (3); the first half frame (2) and the second half frame (3) are connected by a snap-on mechanism; a buffer mechanism is provided in the first half frame (2) and the second half frame (3); a fixing mechanism is provided on the first half frame (2) and the second half frame (3); and a heat dissipation mechanism is provided at the bottom of the first half frame (2) and the second half frame (3).

2. A distributed optical fiber sensor according to claim 1, characterized in that: The fixing mechanism comprises two fixing blocks (5) respectively fixedly connected to the outer side walls of the first half frame (2) and the second half frame (3), the two fixing blocks (5) being symmetrically arranged, and a mounting opening being provided on the fixing block (5), and a fastening bolt (6) being threadedly connected to the inner side wall of the mounting opening.

3. A distributed optical fiber sensor according to claim 1, characterized in that: Arc-shaped limiting plates (4) are provided at the top diagonals of the first half frame (2) and the second half frame (3).

4. A distributed optical fiber sensor according to claim 1, characterized in that: The clamping mechanism comprises two plug-in blocks (7) fixedly connected to the side walls of the second half frame (3), the two plug-in blocks (7) are symmetrically arranged, the first half frame (2) is provided with a slot (8) matched with the plug-in block (7), the plug-in block (7) is provided with a built-in groove (9), a telescopic rod (10) is fixedly connected to the bottom of the built-in groove (9), a pressing head (11) is fixedly connected to one end of the telescopic rod (10) away from the built-in groove (9), the first half frame (2) is provided with a pressing port (13) connected with the slot (8), and the pressing head (11) is matched with the pressing port (13).

5. A distributed optical fiber sensor according to claim 4, characterized in that: The outer wall of the telescopic rod (10) is sleeved with a telescopic spring (12), and the two ends of the telescopic spring (12) are respectively fixedly connected to the inner bottom of the built-in groove (9) and the outer wall of the pressing head (11).

6. A distributed optical fiber sensor according to claim 1, characterized in that: The buffer mechanism comprises two buffer plates (14), the two buffer plates (14) being respectively connected to the inner bottom of the first half frame (2) and the second half frame (3) via buffer springs (15), and a plurality of first heat-conducting columns (16) being fixedly connected to the bottom of the two buffer plates (14).

7. A distributed optical fiber sensor according to claim 6, characterized in that: The heat dissipation mechanism comprises a cooling cavity (18) opened at the bottom of the first half frame (2) and the second half frame (3); a plurality of heat conduction ports (17) are opened on the first half frame (2) and the second half frame (3); a plurality of the first heat conduction columns (16) are respectively inserted into the corresponding heat conduction ports (17); and a plurality of second heat conduction columns (19) are connected to the bottom of the cooling cavity (18) and are arranged through the cooling cavity.

8. A distributed optical fiber sensor according to claim 7, characterized in that: Sealing rings (20) are provided at the connection points between the second heat-conducting column (19) and the first half frame (2) and the second half frame (3).

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