Distributed optical fiber vibration monitoring device and method

Abstract

The invention discloses a distributed optical fiber vibration monitoring device and method, and solves the problems that the length of an optical fiber for monitoring a pipeline is not easy to adjust, and waste is easily caused, the distributed optical fiber vibration monitoring device comprises a storage box, the storage box is internally provided with a storage cavity, and the storage cavity is internally provided with an optical fiber monitoring assembly; the optical fiber monitoring assembly comprises an unwinding roller arranged in the storage cavity, the unwinding roller is rotationally connected with the storage box, an optical fiber body is wound around the outer side of the unwinding roller, connectors are installed at the two ends of the optical fiber body, a top block is fixedly installed at the top end of a rotating shaft above the optical fiber body, and clamping grooves are formed in the outer side of the top block at equal angles. A clamping fixing piece is installed at the top end of the storage box, a side groove is formed in one side of the storage cavity, and an optical fiber limiting assembly is arranged in the side groove; according to the invention, the optical fiber body can be rolled to a required length during installation, so that the optical fiber can be conveniently installed outside pipelines with different lengths, and the pipelines with different lengths can be conveniently monitored and protected.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical fiber vibration monitoring, and in particular relates to a distributed optical fiber vibration monitoring device and method. Background Art

[0002] The FDV series distributed fiber vibration monitoring system (DVS) uses the φ-OTDR principle and the interference phenomenon of high-coherence backscattered Rayleigh light to achieve accurate demodulation of intrusion vibration signals, and has the characteristics of long detection distance, high positioning accuracy, wide signal response bandwidth, and intelligent pattern analysis. Algorithm optimization and data pattern recognition for different application scenarios can achieve multiple functions such as accurate event positioning, simultaneous alarm of multiple events, accurate identification of event types, personalized partition configuration, map display, etc. It is widely used in the security monitoring and positioning of urban pipelines, oil and gas pipelines, integrated pipeline corridors, communication / transmission lines, etc., as well as perimeter intrusion security protection in important areas such as airport perimeters and park perimeters. Among them, the fiber optic vibration monitoring device is often installed on the outside of the pipeline to protect against pipeline oil theft, but it has the following defects:

[0003] When monitoring and protecting the outside of a pipeline, optical fibers of the same length need to be installed. When the length of the pipeline increases, optical fibers of the same length need to be replaced, resulting in a waste of optical fibers. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a distributed optical fiber vibration monitoring device and method, which effectively solves the problem that the length of the optical fiber used for monitoring the pipeline is difficult to adjust and easily causes waste.

[0005] To achieve the above object, the present invention provides the following technical solution: a distributed optical fiber vibration monitoring device, comprising a storage box, a storage cavity is installed inside the storage box, and an optical fiber monitoring component is installed inside the storage cavity;

[0006] The optical fiber monitoring component includes a reel arranged inside the storage cavity, the reel is rotatably connected to the storage box, an optical fiber body is wound around the outside of the reel, joints are installed at both ends of the optical fiber body, a top block is fixedly installed on the top of the rotating shaft above the optical fiber body, snap-in grooves are provided at equal angles on the outside of the top block, a snap-in fixture is installed on the top of the storage box, a side groove is provided on one side of the storage cavity, and an optical fiber limit assembly is inside the side groove, and the optical fiber limit assembly is used to guide the optical fiber body.

[0007] Preferably, a head-end connector is installed on the side of the storage box away from the side groove, a head-end interface is installed on the head-end connector, the head-end interface is fixedly installed on the side wall of the storage cavity away from the side groove, a tail-end connector is provided on the side of the storage box close to the side groove, a tail-end interface is installed on the tail-end connector, and the two connectors at both ends of the optical fiber body are respectively inserted into the head-end interface and the tail-end interface.

[0008] Preferably, the clip-on fixing member includes a vertical plate fixedly mounted on the top of the storage box, the vertical plate is located on the side of the top block away from the side groove, a fixing box is fixedly mounted on the side of the vertical plate away from the top block, a clip plate is movably mounted inside the fixing box, one end of the clip plate is clipped into one of the clipping grooves, thereby clipping and fixing the unwinding roller.

[0009] Preferably, a return spring is symmetrically installed at one end of the card plate away from the vertical plate, one end of the return spring is fixedly connected to the inner wall of the end of the fixed box. A pull rod is installed at the end of the card plate away from the vertical plate, one end of the pull rod passes through the outside of the fixed box.

[0010] Preferably, the optical fiber limiting assembly includes a support plate arranged on the inner side of the side groove, a mounting plate is symmetrically installed on the support plate, a rotation control assembly is installed between the mounting plate and the storage box, two side panels are symmetrically installed on the top of the support plate, two guide members are symmetrically arranged between the two side plates, and a tensioning member is arranged between the two guide members.

[0011] Preferably, the guide member includes two limiting rollers, which are arranged one above the other, the limiting rollers are rotatably connected to the side plates, and the optical fiber body passes between the upper and lower limiting rollers.

[0012] Preferably, the tensioning member includes a pressure roller arranged between two side plates, the pressure roller is located above the optical fiber body, guide blocks are rotatably installed at both ends of the pressure roller, the guide blocks are slidably installed inside the guide groove, the guide groove is opened on the side plate, a support spring is fixedly installed at the bottom end of the guide block, the bottom end of the support spring is fixedly connected to the inner bottom wall of the guide groove, a top plate is provided above the pressure roller, support rods are symmetrically installed at the bottom end of the top plate, the support rods are fixedly connected to the side plates, sliding grooves are symmetrically opened on the top plate, sliding grooves are slidably installed inside the sliding grooves, bottom connecting rods are hingedly installed at the bottom ends of the two sliding grooves, the bottom ends of the two bottom connecting rods are hinged to the top wall of the pressure plate, and the bottom wall of the pressure plate contacts the top wall of the pressure roller.

[0013] Preferably, a fixed plate is fixedly installed on the top of the top plate, positioning grooves are equidistantly provided on the surface of the fixed plate, a movable groove is provided inside the sliding block, a positioning rod is movably installed inside the movable groove, the positioning rod is clamped with the positioning groove, a fixed sleeve is installed on the side of the two sliding blocks away from each other, a push block is slidably installed inside the fixed sleeve, a side connecting rod is hingedly installed on one end of the push block, the other end of the side connecting rod is hinged to the positioning rod, a compression spring is symmetrically installed on one end of the positioning rod, one end of the compression spring is fixedly connected to the inner wall of one end of the movable groove, and when the push block moves toward the inside of the movable groove, the positioning rod is driven to move toward the inside of the movable groove.

[0014] Preferably, the rotation control assembly includes a guide rod fixedly installed inside the side groove, the guide rod is slidably connected to one of the mounting plates, a screw is rotatably installed inside the side groove, the screw is threadedly connected to the other mounting plate, a rotating gear is fixedly installed on the top of the screw, a driven gear is installed on the clamping groove, a middle gear is meshingly connected between the rotating gear and the driven gear, the middle gear is rotatably connected to the storage box, and a handle is installed on the top of the rotating gear.

[0015] Preferably, a monitoring method of a distributed optical fiber vibration monitoring device is characterized in that the monitoring method is as follows:

[0016] S1. One-end installation: Install the tail connector on one end of the pipe, disengage the card plate from the card slot, and move the storage box toward the other end of the pipe, turning the screw continuously while moving;

[0017] S2, fiber winding: when the screw is continuously rotated, the unwinding roller is continuously driven to rotate, the fiber body is continuously wound out, and the support plate is continuously driven to move upward;

[0018] S3. Installation at the other end: When the storage box is moved to the other end of the pipeline, install the storage box at the other end of the pipeline;

[0019] S4, fixing and tensioning: insert the clamping plate into the clamping groove again, and then push the pressing roller to move downward, push the optical fiber body to bend under the pressing roller, and tension the optical fiber body;

[0020] S5. Distributed installation: Install multiple devices evenly around the pipeline according to the above operations. Insert the connectors at both ends of the optical fiber body into the head end interface and the tail end interface respectively. When the optical fiber body vibrates, it can transmit the signal to the computer to sound an alarm.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1) During operation, the unwinding roller is installed by rotating inside the storage cavity, and the optical fiber body is wound on the unwinding roller. The connectors at both ends of the optical fiber body are respectively inserted into the head end interface and the tail end interface, so that the optical fiber body can be connected to the computer equipment. At the same time, the optical fiber body can be rolled out to the required length during installation, so as to facilitate installation outside the pipelines of different lengths and facilitate monitoring and protection of pipelines of different lengths;

[0023] 2) During operation, the optical fiber body is wound to the outside of the unwinding roller, and the optical fiber body passes between the upper and lower limit rollers above the support plate. When the screw is rotated, the unwinding roller can be driven to rotate at the same time, so that the optical fiber body can be rolled out from bottom to top. At the same time, the support plate can move upward synchronously to ensure the stability of the optical fiber body rolling out;

[0024] 3) During operation, after the optical fiber body is rolled out to the required length, the card plate is inserted into the card slot on the corresponding top block to card and fix the unwinding roller. When the optical fiber body is located under the pressure roller, the pressure roller is pushed downward to tension the optical fiber body, so that the optical fiber body can be tightened, thereby improving the vibration monitoring effect of the optical fiber body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0026] In the attached picture:

[0027] Figure 1 A schematic diagram of the structure of a distributed optical fiber vibration monitoring device and method of the present invention;

[0028] Figure 2 It is a schematic diagram of the internal structure of the storage box of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the optical fiber monitoring assembly of the present invention;

[0030] Figure 4 It is a schematic diagram of the card board structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the optical fiber limiting assembly of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the pressing roller of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the sliding block of the present invention;

[0034] Figure 8 It is a schematic diagram of the structure of the rotation control component of the present invention.

[0035] In the figure: 1, storage box; 2, storage cavity; 3, head end connector; 4, head end interface; 5, tail end connector; 6, tail end interface; 7, optical fiber monitoring assembly; 701, unwinding roller; 702, optical fiber body; 703, connector; 704, top block; 705, clamping groove; 706, vertical plate; 707, fixing box; 708, clamping plate; 709, reset spring; 710, pull rod; 8, side groove; 9, optical fiber limit assembly; 901, support plate; 902, mounting plate; 903, side plate; 904, limit roller; 905, guide block; 906, pressure Roller; 907, support spring; 908, top plate; 909, support rod; 910, sliding groove; 911, sliding block; 912, bottom connecting rod; 913, pressure plate; 914, fixed plate; 915, positioning groove; 916, moving groove; 917, positioning rod; 918, fixing sleeve; 919, push block; 920, side connecting rod; 921, clamping spring; 10, rotation control assembly; 1001, guide rod; 1002, screw; 1003, rotating gear; 1004, middle gear; 1005, driven gear; 1006, handle. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] Depend on Figure 1-8 The present invention relates to a distributed optical fiber vibration monitoring device, comprising a storage box 1, a storage cavity 2 is installed inside the storage box 1, and an optical fiber monitoring component 7 is installed inside the storage cavity 2;

[0038] The optical fiber monitoring assembly 7 includes a reel 701 disposed inside the storage chamber 2, the reel 701 is rotatably connected to the storage box 1, an optical fiber body 702 is wound around the outer side of the reel 701, joints 703 are installed at both ends of the optical fiber body 702, a top block 704 is fixedly installed at the top of the rotating shaft above the optical fiber body 702, a snap-in groove 705 is provided at an equal angle on the outer side of the top block 704, a snap-in fixing piece is installed at the top of the storage box 1, a side groove 8 is provided on one side of the storage chamber 2, an optical fiber limiting assembly 9 is provided inside the side groove 8, and an optical fiber limiting assembly 9 is provided inside the side groove 8. The component 9 is used to guide the optical fiber body 702. A head-end connector 3 is installed on the side of the storage box 1 away from the side groove 8. A head-end interface 4 is installed on the head-end connector 3. The head-end interface 4 is fixedly installed on the side wall of the storage cavity 2 away from the side groove 8. A tail-end connector 5 is provided on the side of the storage box 1 close to the side groove 8. A tail-end interface 6 is installed on the tail-end connector 5. The two connectors 703 at both ends of the optical fiber body 702 are respectively inserted into the head-end interface 4 and the tail-end interface 6. The clamping fixture includes a vertical plate 70 fixedly installed on the top of the storage box 1. 6. The vertical plate 706 is located on the side of the top block 704 away from the side groove 8. A fixed box 707 is fixedly installed on the side of the vertical plate 706 away from the top block 704. A clamping plate 708 is movably installed inside the fixed box 707. One end of the clamping plate 708 is clamped into the inside of one of the clamping grooves 705, so as to clamp and fix the unwinding roller 701. A return spring 709 is symmetrically installed on the end of the clamping plate 708 away from the vertical plate 706. One end of the return spring 709 is fixedly connected to the inner wall of the end of the fixed box 707. The clamping plate 708 is away from the vertical plate 706. A pull rod 710 is installed at one end, and one end of the pull rod 710 passes through the outside of the fixed box 707. A reel 701 is rotatably installed inside the storage cavity 2, and an optical fiber body 702 is wound on the reel 701. The connectors 703 at both ends of the optical fiber body 702 are respectively inserted into the head end interface 4 and the tail end interface 6, so that the optical fiber body 702 can be connected to the computer equipment. At the same time, the optical fiber body 702 can be rolled out to the required length during installation, so as to facilitate installation on the outside of pipelines of different lengths and facilitate monitoring and protection of pipelines of different lengths.

[0039] The optical fiber limiting assembly 9 includes a support plate 901 arranged on the inner side of the side groove 8, a mounting plate 902 is symmetrically installed on the support plate 901, a rotation control assembly 10 is installed between the mounting plate 902 and the storage box 1, two side plates 903 are symmetrically installed on the top of the support plate 901, two guide members are symmetrically arranged between the two side plates 903, a tensioning member is arranged between the two guide members, the guide member includes two limiting rollers 904, the two limiting rollers 904 are arranged up and down, the limiting rollers 904 are rotatably connected to the side plates 903, the optical fiber body 702 passes between the upper and lower limiting rollers 904, the tensioning member includes a pressure roller 906 arranged between the two side plates 903, and the pressure roller 906 is located at the optical fiber body 7 02, guide blocks 905 are rotatably installed at both ends of the pressure roller 906, and the guide blocks 905 are slidably installed inside the guide groove. The guide groove is opened on the side plate 903, and a support spring 907 is fixedly installed at the bottom end of the guide block 905. The bottom end of the support spring 907 is fixedly connected to the inner bottom wall of the guide groove. A top plate 908 is provided above the pressure roller 906, and a support rod 909 is symmetrically installed at the bottom end of the top plate 908. The support rod 909 is fixedly connected to the side plate 903, and sliding grooves 910 are symmetrically opened on the top plate 908. The sliding grooves 910 are slidably installed inside the sliding grooves 910. The bottom ends of the two sliding grooves 910 are hingedly installed with bottom connecting rods 912. The bottom ends of the connecting rods 912 are hinged to the top wall of the pressure plate 913, the bottom wall of the pressure plate 913 contacts the top wall of the pressure roller 906, a fixing plate 914 is fixedly installed on the top of the top plate 908, and positioning grooves 915 are equidistantly provided on the surface of the fixing plate 914, a moving groove 916 is provided inside the sliding block 911, and a positioning rod 917 is movably installed inside the moving groove 916, and the positioning rod 917 is engaged with the positioning groove 915, and a fixing sleeve 918 is installed on the side away from each other of the two sliding blocks 911, and a push block 919 is slidably installed inside the fixing sleeve 918, and one end of the push block 919 is hingedly installed with a side connecting rod 920, and the other end of the side connecting rod 920 is hinged with the positioning rod 917. Then, a compression spring 921 is symmetrically installed at one end of the positioning rod 917, and one end of the compression spring 921 is fixedly connected to the inner wall of one end of the movable groove 916. When the push block 919 moves toward the inside of the movable groove 916, it drives the positioning rod 917 to move toward the inside of the movable groove 916. After the optical fiber body 702 is rolled out to the required length, the clamping plate 708 is clamped into the clamping groove 705 on the corresponding top block 704 to clamp and fix the unwinding roller 701. When the optical fiber body 702 is located below the pressure roller 906, the pressure roller 906 is pushed to move downward, thereby tensioning the optical fiber body 702, so that the optical fiber body 702 can be tightened, thereby improving the vibration monitoring effect of the optical fiber body 702.

[0040] The rotation control assembly 10 includes a guide rod 1001 fixedly mounted inside the side groove 8, the guide rod 1001 is slidably connected to one of the mounting plates 902, a screw rod 1002 is rotatably mounted inside the side groove 8, the screw rod 1002 is threadedly connected to the other mounting plate 902, a rotating gear 1003 is fixedly mounted on the top of the screw rod 1002, a driven gear 1005 is mounted on the clamping groove 705, and a middle gear 1003 is meshedly connected between the rotating gear 1003 and the driven gear 1005. 4. The middle gear 1004 is rotatably connected to the storage box 1, and a handle 1006 is installed on the top of the rotating gear 1003. The optical fiber body 702 is wound to the outside of the unwinding roller 701. At the same time, the optical fiber body 702 passes between the upper and lower limiting rollers 904 above the supporting plate 901. When the screw 1002 is rotated, the unwinding roller 701 can be driven to rotate at the same time, so that the optical fiber body 702 can be rolled out from bottom to top. At the same time, the supporting plate 901 can move upward synchronously to ensure the rolling stability of the optical fiber body 702.

[0041] Working principle: When it is necessary to monitor the outside of the pipeline to prevent oil theft, when in use, the tail connector 5 is fixedly installed on one end of the pipeline, and then the card plate 708 is pulled into the fixed box 707 through the pull rod 710, so that the card plate 708 is disengaged from the card slot 705 on the top block 704, and then the storage box 1 is moved toward the other end of the pipeline. While moving, the screw rod 1002 is continuously rotated through the handle 1006. Since the screw rod 1002 is threadedly connected to the mounting plate 902, the support plate 901 is driven to move upward continuously. When the rotating gear 1003 rotates, the middle gear 1004 and the driven gear 1 005 drives the unwinding roller 701 to rotate continuously, thereby continuously rolling out the optical fiber body 702. When the optical fiber body 702 is rolled out, one end of the optical fiber body 702 continuously moves upward, so that the rolled-out height of the optical fiber body 702 is adapted to the height of the supporting plate 901, thereby improving the rolling-out effect, until the storage box 1 is moved to the other end of the pipeline. After the storage box 1 is moved to the other end of the pipeline, the storage box 1 is fixedly installed at the other end of the pipeline, thereby arranging the optical fiber body 702 along the length direction of the pipeline, and the excess optical fiber body 702 is wound to the outside of the unwinding roller 701, so as to facilitate the storage of the optical fiber body 702 and facilitate installation on the outside of pipelines of different lengths;

[0042] After the optical fiber body 702 is rolled out, the pull rod 710 is loosened, so that the clamping plate 708 is clamped into the corresponding clamping groove 705 under the elastic force of the return spring 709, thereby fixing the unwinding roller 701 and fixing the screw rod 1002 at the same time, thereby fixing the unwinding roller 701 to ensure the installation stability of the optical fiber body 702. Since the optical fiber body 702 passes between the upper and lower limiting rollers 904, the optical fiber body 702 is limited, and the optical fiber body 702 is located below the pressure roller 906, when the optical fiber body 702 is loose, the two push blocks 919 are pressed to move toward the inside of the moving groove 916, and then the positioning rod 917 is pushed into the inside of the moving groove 916 through the side connecting rod 920, and the two sliding blocks 911 are pushed close to each other, so that the bottom connecting rod 912 pushes the pressing plate 913 to move downward, and the pressure roller 906 is pushed downward, so that the optical fiber body 702 is tensioned to improve the installation stability;

[0043] Subsequently, multiple connectors 703 are installed around the pipeline. The two connectors 703 at both ends of the optical fiber body 702 are respectively inserted into the head end interface 4 and the tail end interface 6, and connected to the computer through the head end connector 3 and the tail end interface 6. When the optical fiber body 702 outside the pipeline vibrates, the vibration of the optical fiber body 702 causes the photosensitivity of the optical fiber body 702 to change, thereby transmitting the vibration position and direction signal to the computer, thereby monitoring and protecting the pipeline.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distributed optical fiber vibration monitoring device, comprising a storage box (1), characterized in that: The storage box (1) has a storage cavity (2) installed inside, and an optical fiber monitoring component (7) is installed inside the storage cavity (2); The optical fiber monitoring assembly (7) comprises an unwinding roller (701) arranged inside the storage cavity (2), the unwinding roller (701) is rotatably connected to the storage box (1), an optical fiber body (702) is wound around the outer side of the unwinding roller (701), joints (703) are installed at both ends of the optical fiber body (702), a top block (704) is fixedly installed at the top of the rotating shaft above the optical fiber body (702), a clamping groove (705) is provided at an equal angle on the outer side of the top block (704), a clamping fixture is installed at the top of the storage box (1), a side groove (8) is provided on one side of the storage cavity (2), and an optical fiber limiting assembly (9) is provided inside the side groove (8), and the optical fiber limiting assembly (9) is used to guide the optical fiber body (702).

2. A distributed optical fiber vibration monitoring device according to claim 1, characterized in that: A head-end connector (3) is installed on the side of the storage box (1) away from the side groove (8), and a head-end interface (4) is installed on the head-end connector (3). The head-end interface (4) is fixedly installed on the side wall of the storage cavity (2) away from the side groove (8). A tail-end connector (5) is provided on the side of the storage box (1) close to the side groove (8), and a tail-end interface (6) is installed on the tail-end connector (5). Two connectors (703) at both ends of the optical fiber body (702) are respectively inserted into the head-end interface (4) and the tail-end interface (6).

3. A distributed optical fiber vibration monitoring device according to claim 1, characterized in that: The clamping fixing member comprises a vertical plate (706) fixedly mounted on the top of the storage box (1); the vertical plate (706) is located on the side of the top block (704) away from the side groove (8); a fixing box (707) is fixedly mounted on the side of the vertical plate (706) away from the top block (704); a clamping plate (708) is movably mounted inside the fixing box (707); one end of the clamping plate (708) is clamped into the inside of one of the clamping grooves (705), thereby clamping and fixing the unwinding roller (701).

4. A distributed optical fiber vibration monitoring device according to claim 3, characterized in that: A return spring (709) is symmetrically installed at one end of the card plate (708) away from the vertical plate (706), and one end of the return spring (709) is fixedly connected to the inner wall of the end of the fixed box (707). A pull rod (710) is installed at one end of the card plate (708) away from the vertical plate (706), and one end of the pull rod (710) passes through the outside of the fixed box (707).

5. A distributed optical fiber vibration monitoring device according to claim 1, characterized in that: The optical fiber limiting assembly (9) comprises a support plate (901) arranged on the inner side of the side groove (8), a mounting plate (902) is symmetrically mounted on the support plate (901), a rotation control assembly (10) is mounted between the mounting plate (902) and the storage box (1), two side plates (903) are symmetrically mounted on the top of the support plate (901), two guide members are symmetrically arranged between the two side plates (903), and a tensioning member is arranged between the two guide members.

6. A distributed optical fiber vibration monitoring device according to claim 5, characterized in that: The guide member comprises two limiting rollers (904), which are arranged up and down, and the limiting rollers (904) are rotatably connected to the side plate (903), and the optical fiber body (702) passes between the upper and lower limiting rollers (904).

7. A distributed optical fiber vibration monitoring device according to claim 5, characterized in that: The tensioning member comprises a pressure roller (906) arranged between two side plates (903), the pressure roller (906) being located above the optical fiber body (702), guide blocks (905) being rotatably mounted at both ends of the pressure roller (906), the guide blocks (905) being slidably mounted inside the guide groove, the guide groove being arranged on the side plate (903), a support spring (907) being fixedly mounted at the bottom end of the guide block (905), the bottom end of the support spring (907) being fixedly connected to the inner bottom wall of the guide groove, a top plate (907) being provided above the pressure roller (906), and a support spring (907) being fixedly mounted at the bottom end of the guide block (905). 08), a support rod (909) is symmetrically installed at the bottom end of the top plate (908), and the support rod (909) is fixedly connected to the side plate (903). A sliding groove (910) is symmetrically opened on the top plate (908), and a sliding groove (910) is slidably installed inside the sliding groove (910). The bottom ends of the two sliding grooves (910) are hingedly installed with bottom connecting rods (912), and the bottom ends of the two bottom connecting rods (912) are hingedly connected to the top wall of the pressure plate (913), and the bottom wall of the pressure plate (913) is in contact with the top wall of the pressure roller (906).

8. A distributed optical fiber vibration monitoring device according to claim 7, characterized in that: A fixing plate (914) is fixedly installed at the top of the top plate (908), and positioning grooves (915) are equidistantly provided on the surface of the fixing plate (914). A movable groove (916) is provided inside the sliding block (911), and a positioning rod (917) is movably installed inside the movable groove (916). The positioning rod (917) is engaged with the positioning groove (915), and a fixing sleeve (918) is installed on the side of the two sliding blocks (911) away from each other. The fixing sleeve (918) is slidably installed inside the fixing sleeve (918). A push block (919) is provided, one end of which is hingedly mounted with a side connecting rod (920), the other end of which is hingedly mounted with a positioning rod (917), one end of which is symmetrically mounted with a clamping spring (921), one end of which is fixedly connected with an inner wall of one end of the movable groove (916), and when the push block (919) moves toward the inside of the movable groove (916), the positioning rod (917) is driven to move toward the inside of the movable groove (916).

9. A distributed optical fiber vibration monitoring device according to claim 5, characterized in that: The rotation control assembly (10) comprises a guide rod (1001) fixedly mounted inside the side groove (8), the guide rod (1001) being slidably connected to one of the mounting plates (902), a screw rod (1002) being rotatably mounted inside the side groove (8), the screw rod (1002) being threadably connected to the other mounting plate (902), a rotating gear (1003) being fixedly mounted on the top of the screw rod (1002), a driven gear (1005) being mounted on the engaging groove (705), a middle gear (1004) being meshedly connected between the rotating gear (1003) and the driven gear (1005), the middle gear (1004) being rotatably connected to the storage box (1), and a handle (1006) being mounted on the top of the rotating gear (1003).

10. A monitoring method for a distributed optical fiber vibration monitoring device according to any one of claims 1 to 9, characterized in that: The monitoring method is as follows: S1, one-end installation: install the tail connector (5) on one end of the pipe, disengage the clamping plate (708) from the clamping groove (705), and move the storage box (1) toward the other end of the pipe, while continuously rotating the screw (1002) during the movement; S2, fiber reeling: when the screw rod (1002) is continuously rotated, the unwinding roller (701) is continuously driven to rotate, the fiber body (702) is continuously reeled out, and the support plate (901) is continuously driven to move upwards; S3, installation at the other end: when the storage box (1) is moved to the other end of the pipeline, the storage box (1) is installed at the other end of the pipeline; S4, fixing and tensioning: inserting the clamping plate (708) into the clamping groove (705) again, and then pushing the pressing roller (906) to move downward, pushing the optical fiber body (702) to bend under the pressing roller (906), and tensioning the optical fiber body (702); S5. Distributed installation: multiple devices are evenly installed around the pipeline according to the above operation. The connectors (703) at both ends of the optical fiber body (702) are respectively inserted into the head end interface (4) and the tail end interface (6). When the optical fiber body (702) vibrates, the signal can be transmitted to the computer to sound an alarm.

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