A distributed optical fiber vibration measurement early warning device

Abstract

This invention belongs to the field of online fiber optic vibration measurement technology and discloses a distributed fiber optic vibration measurement and early warning device. This distributed fiber optic vibration measurement and early warning device includes a frame assembly, fixing components, and a first driving assembly. The frame assembly includes a support frame, an adjusting frame, and a protective frame. Adjusting frames are slidably connected to both sides of the support frame along the X direction, and protective frames are respectively connected to both sides of the two adjusting frames along the Y direction. An internal early warning component is provided inside the frame assembly, and an external early warning component is provided on the outer wall of the protective frame. Fixing components are respectively provided on the side of the two adjusting frames away from the support frame. The first driving assembly is located on the support frame and is used to drive the two adjusting frames to move away from each other along the X direction to insert the fixing components into the external soil, or to drive the two adjusting frames to move towards each other along the X direction to pull the fixing components out of the external soil. This distributed fiber optic vibration measurement and early warning device makes the measurement results more accurate.

Description

Technical Field

[0001] This invention relates to the field of online fiber optic vibration measurement technology, and in particular to a distributed fiber optic vibration measurement and early warning device. Background Technology

[0002] Distributed fiber optic vibration sensing technology can measure vibration at any point on an optical fiber and is widely used for vibration monitoring of long-distance lines to monitor pipeline leaks, construction damage, intrusion incidents, and the operating status of electromechanical equipment. Distributed fiber optic online vibration measurement and early warning devices analyze and process various disturbance data transmitted to the fiber optic cable through direct contact with the fiber and through its carrier. This allows for the identification of different types of external interference along the fiber optic line, such as intrusions that may threaten the safety of surrounding buildings, damage, or mechanical construction that may damage underground optical cables or pipelines. It enables simultaneous detection and high-precision location of long-distance, multi-point intrusions.

[0003] In existing technologies, distributed fiber optic vibration measurement and early warning devices face challenges when monitoring buried fiber optic cables. Varying contact tightness with the soil can cause the device to slip due to vibration, leading to inaccurate vibration measurement data. Furthermore, vibration-induced displacement of the fiber optic cable after burial makes stable positioning difficult. Therefore, there is an urgent need to provide a distributed online fiber optic vibration measurement and early warning device to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a distributed optical fiber vibration measurement and early warning device, which can be rooted and fixed in the ground to avoid the problem of the distributed optical fiber vibration measurement and early warning device slipping due to vibration, thereby making the measurement process more stable and the measurement results more accurate.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A distributed fiber optic vibration measurement and early warning device is provided, comprising:

[0007] A frame assembly includes a support frame, an adjusting frame, and a protective frame. The adjusting frame is slidably connected to both sides of the support frame along the X direction, and the protective frame is connected to both sides of the two adjusting frames along the Y direction. An internal warning component is provided inside the frame assembly, and an external warning component is provided on the outer side wall of the protective frame.

[0008] The fixing components are provided on the side of each of the two adjustment frames away from the support frame;

[0009] A first driving assembly is provided on the support frame. The first driving assembly is used to drive the two adjustment frames to move away from each other in the X direction to insert the fixing member into the external soil, or to drive the two adjustment frames to move towards each other in the X direction to pull the fixing member out of the external soil.

[0010] Preferably, the first drive assembly includes a first positioning frame, a first positioning shaft, a first positioning helical gear, a second positioning helical gear, and a first positioning screw. The first positioning frame is connected to the support frame, the first positioning shaft is rotatably mounted on the first positioning frame, the first positioning helical gear is connected to the first positioning shaft, the two ends of the first positioning screw are respectively connected to the two adjustment frames, the second positioning helical gear is sleeved on the first positioning screw, and the first positioning helical gear and the second positioning helical gear mesh and drive each other to move the two adjustment frames in the X direction.

[0011] Preferably, both adjustment frames include a movable part, and the two ends of the first positioning screw are respectively inserted into the two movable parts. The support frame has two positioning grooves, and the two movable parts are slidably connected to the two positioning grooves respectively.

[0012] Preferably, both ends of the first positioning screw are provided with limiting blocks, and the two moving parts are connected to the two limiting blocks in a one-to-one limiting manner.

[0013] Preferably, the frame assembly further includes a protective plate, a first protective rod, and a second protective rod. The protective plate is connected to both ends of the support frame along the Y direction, and the first protective rod extending along the Y direction is connected to the middle position of both sides of the support frame along the X direction. The plurality of first protective rods are connected to the corresponding protective plates through the second protective rods.

[0014] Preferably, the internal early warning component includes a first sensor, a first spring, a positioning sleeve, a first positioning rod, and a contact seat. The positioning sleeve is connected to the inner wall of the adjustment frame. One end of the first positioning rod is slidably disposed in the positioning sleeve, and the other end is connected to the contact seat. The first spring is sleeved on the first positioning rod, and one end of the first spring is connected to the contact seat, and the other end is connected to the inner wall of the adjustment frame.

[0015] The first sensor is provided in multiple ways, and the multiple first sensors are respectively disposed on the support frame and the first protective rod. The first spring, the positioning sleeve, the first positioning rod and the contact seat are also provided in multiple ways, and each of the contact seats abuts against the corresponding first sensor.

[0016] Preferably, each of the adjustment frames has two protective seats on its inner wall, and each pair of protective seats is respectively located on both sides of each positioning sleeve along the Z direction.

[0017] Preferably, the distributed fiber optic vibration measurement and early warning device further includes a second driving component. The external early warning component includes a lifting platform and a second sensor. The second driving component is used to drive the lifting platform to move along the Z direction to cover the second sensor or expose the second sensor.

[0018] Preferably, the second drive assembly includes a second positioning frame, a second positioning shaft, a first drive helical gear, a second drive helical gear, and a third positioning shaft. The second positioning frame is connected to the protective frame, the second positioning shaft is rotatably mounted on the second positioning frame, the first drive helical gear is connected to the second positioning shaft, the second drive helical gear is sleeved on the third positioning shaft, the tooth surfaces of the first drive helical gear and the second drive helical gear mesh, and a fourth positioning helical gear is provided at each end of the third positioning shaft.

[0019] Both ends of the third positioning shaft are provided with a set of external warning components. Each set of external warning components also includes a third positioning helical gear and a second positioning screw. Each third positioning helical gear meshes with the tooth surface of the corresponding fourth positioning helical gear. The lifting seat is connected to the second positioning screw.

[0020] Preferably, the external warning component further includes a limiting frame, a second positioning rod, a fixing block, and a second spring. The limiting frame is engaged with the protective frame. The second positioning rod passes through the limiting frame along the X direction. One end of the second positioning rod is connected to the second sensor, and the other end is connected to the fixing block. The second spring is sleeved on the second positioning rod and is located between the second sensor and the limiting frame.

[0021] The beneficial effects of this invention are:

[0022] This invention provides a distributed fiber optic vibration measurement and early warning device, comprising a frame assembly, a fixing frame, and a first driving assembly. The frame assembly contains an internal early warning component, while the outer wall of the protective frame contains an external early warning component. The external early warning component enables the distributed fiber optic vibration measurement and early warning device to detect soil vibration externally, while the internal early warning component senses the vibration of the internal cable. The first driving assembly drives two adjusting frames to move in opposite directions along the X-axis to insert the fixing component into the external soil, or drives the two adjusting frames to move towards each other along the X-axis to pull the fixing component out of the external soil. When the distributed fiber optic vibration measurement and early warning device needs to be pre-buried in the soil for testing, the first driving assembly drives the fixing component to insert into the external soil, further anchoring the device underground. By compressing the pre-buried soil, the potential for the device to slip due to vibration is avoided, resulting in a more stable measurement process and more accurate measurement results. When it is necessary to excavate the distributed fiber optic vibration measurement and early warning device, the first driving assembly simply drives the fixing component out of the external soil. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the distributed optical fiber vibration measurement and early warning device provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the support frame and protective frame provided in the embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the frame component provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the first drive component and support frame provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the internal early warning component provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the first drive assembly and the adjustment frame provided in the embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the second driving component and the external early warning component provided in the embodiments of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the second drive assembly and the lifting seat provided in the embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of the limiting frame and the external warning component provided in the embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the external early warning component provided in an embodiment of the present invention.

[0033] In the picture:

[0034] 101. Support frame; 102. Protective plate; 103. First protective rod; 104. Second protective rod; 105. First positioning frame; 106. Positioning groove; 107. Adjusting frame; 1071. Sliding protrusion; 108. Moving part; 109. Protective frame; 110. Fixing component; 111. First positioning shaft; 112. First positioning handle; 113. First positioning helical gear; 114. Second positioning helical gear; 115. First positioning lead screw; 116. Limiting block;

[0035] 2. Internal early warning component; 201. Protective seat; 202. First spring; 203. Positioning sleeve; 204. First positioning rod; 205. Contact seat; 206. First sensor;

[0036] 3. External warning component; 301. Fixing frame; 302. Limiting groove; 303. Lifting seat; 304. Limiting frame; 305. Second positioning rod; 306. Second positioning screw; 307. Third positioning helical gear; 308. Second spring; 309. Second sensor; 310. Fixing block;

[0037] 4. Second drive assembly; 401. Second positioning frame; 402. Second positioning shaft; 403. Second positioning handle; 404. First drive helical gear; 405. Second drive helical gear; 406. Third positioning shaft; 407. Fourth positioning helical gear. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0039] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0042] like Figures 1 to 10 As shown, this embodiment provides a distributed optical fiber vibration measurement and early warning device that can identify different types of external interference along the optical fiber. In some embodiments, the distributed optical fiber vibration measurement and early warning device includes a frame assembly, a fixing member 110, and a first driving assembly. The frame assembly includes a support frame 101, an adjusting frame 107, and a protective frame 109. The adjusting frame 107 is slidably connected to both sides of the support frame 101 along the X direction, and the protective frame 109 is connected to both sides of the two adjusting frames 107 along the Y direction. An internal early warning assembly 2 is provided inside the frame assembly, and an external early warning assembly 3 is provided on the outer wall of the protective frame 109. The fixing member 110 is provided on the side of the two adjusting frames 107 away from the support frame 101. The first driving assembly is located on the support frame 101 and is used to drive the two adjusting frames 107 to move away from each other along the X direction to insert the fixing member 110 into the external soil, or to drive the two adjusting frames 107 to move towards each other along the X direction to pull the fixing member 110 out of the external soil.

[0043] The frame assembly includes an internal warning component 2, and the outer wall of the protective frame 109 includes an external warning component 3. The external warning component 3 enables the distributed fiber optic vibration measurement and warning device to detect soil vibration externally, while the internal warning component 2 can sense the vibration of the internal cable. The first drive component drives the two adjustment frames 107 to move in opposite directions along the X direction to insert the fixing member 110 into the external soil, or drives the two adjustment frames 107 to move towards each other along the X direction to pull the fixing member 110 out of the external soil. When the distributed fiber optic vibration measurement and warning device needs to be pre-buried in the soil for testing, the first drive component drives the fixing member 110 to be inserted into the external soil, further anchoring the distributed fiber optic vibration measurement and warning device underground. By compressing the pre-buried soil, the potential problem of the distributed fiber optic vibration measurement and warning device slipping due to vibration is avoided, thus making the measurement process more stable and the measurement results more accurate. When it is necessary to dig out the distributed fiber optic vibration measurement and warning device, the first drive component drives the fixing member 110 to be pulled out of the external soil.

[0044] Specifically, in this embodiment, each protective frame 109 is also provided with a fixing member 110 on its outer wall. The first driving component is used to drive the two adjusting frames 107 to move away from each other in the X direction, thereby driving each protective frame 109 to move, so that the fixing member 110 on each protective frame 109 is inserted into the external soil, so that the distributed optical fiber vibration measurement and early warning device is further rooted and fixed underground.

[0045] Specifically, the first drive assembly includes a first positioning frame 105, a first positioning shaft 111, a first positioning helical gear 113, a second positioning helical gear 114, and a first positioning lead screw 115. The first positioning frame 105 is connected to the support frame 101. The first positioning shaft 111 is rotatably mounted on the first positioning frame 105. The first positioning helical gear 113 is connected to the first positioning shaft 111. The two ends of the first positioning lead screw 115 are respectively connected to two adjusting frames 107 for transmission. The second positioning helical gear 114 is sleeved on the first positioning lead screw 115. The first positioning helical gear 113 and the second positioning helical gear 114 mesh and transmit power so that the two adjusting frames 107 move in the X direction.

[0046] Preferably, to facilitate the rotation of the first positioning shaft 111, the first positioning shaft 111 is connected to a first positioning handle 112. When pre-burying the distributed fiber optic vibration measurement and early warning device, the first positioning handle 112 is exposed above the soil. Rotating the first positioning handle 112 causes the first positioning shaft 111 to rotate, which in turn causes the first positioning helical gear 113 to rotate, thereby causing the second positioning helical gear 114 to rotate. The rotation of the second positioning helical gear 114 causes the first positioning lead screw 115 to rotate, and the rotation of the first positioning lead screw 115 causes the two adjusting frames 107 to move along the X direction.

[0047] To facilitate the movement of the two adjustment frames 107, each adjustment frame 107 includes a moving part 108. The two ends of the first positioning screw 115 are respectively inserted into the two moving parts 108. The support frame 101 has two positioning grooves 106, and the two moving parts 108 are slidably connected to the positioning grooves 106 respectively. Specifically, the two ends of the first positioning screw 115 are respectively provided with a first thread groove and a second thread groove with opposite thread directions. The two moving parts 108 are respectively threaded to the first thread groove and the second thread groove, so that the moving parts 108 threaded to both sides of the outer wall of the first positioning screw 115 drive the two adjustment frames 107 to move along the X direction, so that the two adjustment frames 107 drive the protective frames 109 fixed on both sides to slide. And through the sliding positioning of the positioning grooves 106, the four protective frames 109 and the two adjustment frames 107 drive the multiple fixing parts 110 to move and be stably fixed in the pre-buried soil.

[0048] Furthermore, each end of the first positioning screw 115 is provided with a limiting block 116, and the two moving parts 108 are connected to the two limiting blocks 116 in a corresponding manner. The limiting blocks 116 are provided to prevent the moving parts 108 from falling off during the sliding of the moving parts 108 in the positioning groove 106.

[0049] Preferably, each of the two adjustment frames 107 is also provided with a sliding protrusion 1071, and the support frame 101 is provided with a sliding groove. The sliding protrusion 1071 is slidably disposed in the sliding groove. The arrangement of the sliding protrusion 1071 and the sliding groove makes the two adjustment frames 107 slide more stably and smoothly on the support frame 101.

[0050] The frame assembly also includes protective plates 102, first protective rods 103, and second protective rods 104. Protective plates 102 are connected to both ends of the support frame 101 along the Y direction, and first protective rods 103 extending along the Y direction are connected to the middle positions of both sides of the support frame 101 along the X direction. Multiple first protective rods 103 are connected to their corresponding protective plates 102 via second protective rods 104. The arrangement of protective plates 102, first protective rods 103, and second protective rods 104 improves the support strength of the distributed fiber optic vibration measurement and early warning device, thereby assisting in the stable positioning of the distributed fiber optic vibration measurement and early warning device.

[0051] The internal early warning component 2 includes a first sensor 206, a first spring 202, a positioning sleeve 203, a first positioning rod 204, and a contact seat 205. The positioning sleeve 203 is connected to the inner wall of the adjusting frame 107. One end of the first positioning rod 204 is slidably disposed inside the positioning sleeve 203, and the other end is connected to the contact seat 205. The first spring 202 is sleeved on the first positioning rod 204, with one end connected to the contact seat 205 and the other end connected to the inner wall of the adjusting frame 107. Multiple first sensors 206 are provided, respectively disposed on the support frame 101 and the first protective rod 103. Multiple first springs 202, positioning sleeves 203, first positioning rods 204, and contact seats 205 are also provided, with each contact seat 205 abutting against its corresponding first sensor 206. The multiple first sensors 206 can reduce data transmission problems caused by the failure of a single underground sensor and can also accurately determine the length range of soil vibration around the cable within a certain distance. When the two adjusting brackets 107 do not move in opposite directions, the first spring 202 is compressed, causing each contact seat 205 to abut against each first sensor 206. When the two adjusting brackets 107 move in opposite directions, the first positioning rod 204 slides within the positioning sleeve 203, and under the action of the spring force of the first spring 202, each contact seat 205 always abuts against the corresponding first sensor 206, thus enabling the distributed fiber optic vibration measurement and early warning device to sense the vibration of the internal cable. The first positioning rod 204 is retractably set within the positioning sleeve 203, and the setting of the first spring 202 plays a buffering role, leaving a certain space for the first sensor 206 for protection. The retractable setting of the first positioning rod 204 within the positioning sleeve 203 facilitates vibration measurement after different width adjustments, increasing the ease of use of the distributed fiber optic vibration online measurement and early warning device.

[0052] During the movement of the two adjusting frames 107, in order to prevent the positioning sleeve 203 and the first positioning rod 204 from tilting, each adjusting frame 107 is provided with two protective seats 201 on its inner wall. The two protective seats 201 are respectively located on both sides of each positioning sleeve 203 along the Z direction.

[0053] The distributed fiber optic vibration measurement and early warning device also includes a second drive assembly 4. The external early warning assembly 3 includes a lifting base 303 and a second sensor 309. The second drive assembly 4 is used to drive the lifting base 303 to move along the Z direction to cover the second sensor 309 or expose the second sensor 309. The lifting base 303 is designed to prevent damage to the second sensor 309 during the pre-embedding of the distributed fiber optic vibration measurement and early warning device.

[0054] Specifically, the second drive assembly 4 includes a second positioning frame 401, a second positioning shaft 402, a first drive helical gear 404, a second drive helical gear 405, and a third positioning shaft 406. The second positioning frame 401 is connected to the protective frame 109. The second positioning shaft 402 is rotatably mounted on the second positioning frame 401. The first drive helical gear 404 is connected to the second positioning shaft 402. The second drive helical gear 405 is sleeved on the third positioning shaft 406. The tooth surfaces of the first drive helical gear 404 and the second drive helical gear 405 mesh. The two ends of the third positioning shaft 406 are respectively provided with a fourth positioning helical gear 407. Each end of the third positioning shaft 406 is provided with a set of external warning components 3. Each set of external warning components 3 also includes a third positioning helical gear 307 and a second positioning screw 306. Each third positioning helical gear 307 meshes with the tooth surface of the corresponding fourth positioning helical gear 407. The lifting seat 303 is connected to the second positioning screw 306. Specifically, in this embodiment, each protective frame 109 is provided with a set of external early warning components 3, so that the distributed fiber optic vibration measurement and early warning device can detect the vibration of soil in multiple locations. Correspondingly, every two sets of external early warning components 3 on the same side are connected to a set of second drive components 4.

[0055] Preferably, to facilitate the rotation of the second positioning shaft 402, a second positioning handle 403 is connected to the second positioning shaft 402. When the distributed fiber optic vibration measurement and early warning device is pre-buried, the second positioning handle 403 is exposed above the soil. The second positioning handle 403 drives the second positioning shaft 402 to rotate, which in turn drives the first driving helical gear 404 to rotate. The first driving helical gear 404 drives the second driving helical gear 405 to rotate, which in turn drives the third positioning shaft 406 to rotate. The rotation of the third positioning shaft 406 drives the fourth positioning helical gear 407 to rotate, which in turn drives the third positioning helical gear 307 to rotate, which in turn drives the second positioning screw 306 to rotate. The rotation of the second positioning screw 306 drives the lifting seat 303 to move, thereby realizing the lifting of the lifting seat 303.

[0056] The external warning component 3 also includes a limiting frame 304, a second positioning rod 305, a fixing block 310, and a second spring 308. The limiting frame 304 is engaged with the protective frame 109. The second positioning rod 305 passes through the limiting frame 304 in the X direction. One end of the second positioning rod 305 is connected to the second sensor 309, and the other end is connected to the fixing block 310. The second spring 308 is sleeved on the second positioning rod 305 and is located between the second sensor 309 and the limiting frame 304.

[0057] Specifically, the external warning component 3 also includes a fixed frame 301. The fixed frame 301 is connected to the limiting frame 304. The third positioning helical gear 307 is rotatably connected to the fixed frame 301, and the third positioning helical gear 307 passes through the fixed frame 301 and is fixedly connected to the second positioning screw 306. The fixed frame 301 facilitates the setting of the third positioning helical gear 307.

[0058] Specifically, a limiting groove 302 is provided in the middle of the limiting frame 304. The second positioning rod 305 slides through the side wall of the limiting frame 304 and is placed in the limiting groove 302 in the X direction. After the distributed fiber optic vibration measurement and early warning device is buried underground, the lifting seat 303 covers the limiting groove 302. The second positioning rod 305, the second spring 308, and the second sensor 309 are all located in the limiting groove 302. The limiting groove 302 provides a space for the second positioning rod 305, the second spring 308, and the second sensor 309. At this time, the second spring 308 is in a compressed state, driving the second driving component 4 to raise the lifting seat 303. At this time, the limiting groove 302 is connected to the external environment. Under the action of the elastic force of the second spring 308, the second sensor 309, which is fixed to the second positioning rod 305, moves outward to contact the soil on the outside. It is also stopped by the fixing block 310 against the side wall of the limiting frame 304 to prevent the second positioning rod 305 from falling off. Throughout the process, the second sensor 309 comes into contact with the pre-buried soil on the outside, which facilitates the accuracy of the measurement on the outside. The lifting seat 303 is designed to prevent damage to the sensor during pre-burying. The second spring 308 and the second positioning rod 305 provide an appropriate distance for the sensor to move, making the measurement more accurate and stable.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A distributed fiber optic vibration measurement and early warning device, characterized in that, include: The frame assembly includes a support frame (101), an adjustment frame (107), and a protective frame (109). The support frame (101) is slidably connected to the adjustment frame (107) on both sides along the X direction. The two adjustment frames (107) are respectively connected to the protective frame (109) on both sides along the Y direction. The frame assembly is provided with an internal warning component (2), and the outer side wall of the protective frame (109) is provided with an external warning component (3). The fixing member (110) is provided on the side of each of the two adjustment frames (107) away from the support frame (101); A first driving assembly is provided on the support frame (101). The first driving assembly is used to drive the two adjustment frames (107) to move away from each other in the X direction so as to insert the fixing member (110) into the external soil, or to drive the two adjustment frames (107) to move towards each other in the X direction so as to pull the fixing member (110) out of the external soil. The first drive assembly includes a first positioning frame (105), a first positioning shaft (111), a first positioning helical gear (113), a second positioning helical gear (114), and a first positioning screw (115). The first positioning frame (105) is connected to the support frame (101). The first positioning shaft (111) is rotatably mounted on the first positioning frame (105). The first positioning helical gear (113) is connected to the first positioning shaft (111). The two ends of the first positioning screw (115) are respectively connected to the two adjustment frames (107). The second positioning helical gear (114) is sleeved on the first positioning screw (115). The first positioning helical gear (113) and the second positioning helical gear (114) mesh and drive each other so that the two adjustment frames (107) move in the X direction. The frame assembly further includes a protective plate (102), a first protective rod (103), and a second protective rod (104). The protective plate (102) is connected to both ends of the support frame (101) along the Y direction. The first protective rod (103) extending along the Y direction is connected to the middle position of both sides of the support frame (101) along the X direction. The multiple first protective rods (103) are connected to the corresponding protective plates (102) through the second protective rods (104). The internal early warning component (2) includes a first sensor (206), a first spring (202), a positioning sleeve (203), a first positioning rod (204), and a contact seat (205). The positioning sleeve (203) is connected to the inner wall of the adjusting frame (107). One end of the first positioning rod (204) is slidably disposed in the positioning sleeve (203), and the other end is connected to the contact seat (205). The first spring (202) is sleeved on the first positioning rod (204). One end of the first spring (202) is connected to the contact seat (205), and the other end is connected to the inner wall of the adjusting frame (107). Multiple first sensors (206) are provided, and multiple first sensors (206) are respectively provided on the support frame (101) and the first protective rod (103). Multiple first springs (202), positioning sleeves (203), first positioning rods (204) and contact seats (205) are also provided, and each contact seat (205) abuts against the corresponding first sensor (206). The distributed fiber optic vibration measurement and early warning device also includes a second drive component (4). The external early warning component (3) includes a lifting seat (303) and a second sensor (309). The second drive component (4) is used to drive the lifting seat (303) to move along the Z direction to cover the second sensor (309) or expose the second sensor (309). The external warning component (3) further includes a limiting frame (304), a second positioning rod (305), a fixing block (310), and a second spring (308). The limiting frame (304) is engaged with the protective frame (109). The second positioning rod (305) passes through the limiting frame (304) along the X direction. One end of the second positioning rod (305) is connected to the second sensor (309), and the other end is connected to the fixing block (310). The second spring (308) is sleeved on the second positioning rod (305) and is located between the second sensor (309) and the limiting frame (304).

2. The distributed fiber optic vibration measurement and early warning device according to claim 1, characterized in that, Both of the adjustment frames (107) include a moving part (108), and the two ends of the first positioning screw (115) are respectively inserted into the two moving parts (108). The support frame (101) has two positioning grooves (106), and the two moving parts (108) are slidably connected to the two positioning grooves (106) respectively.

3. The distributed fiber optic vibration measurement and early warning device according to claim 2, characterized in that, Both ends of the first positioning screw (115) are provided with limiting blocks (116), and the two moving parts (108) are connected to the two limiting blocks (116) in a corresponding manner.

4. The distributed fiber optic vibration measurement and early warning device according to claim 1, characterized in that, Each of the adjustment frames (107) has two protective seats (201) on its inner wall, and each pair of protective seats (201) is respectively located on both sides of each positioning sleeve (203) along the Z direction.

5. The distributed fiber optic vibration measurement and early warning device according to claim 1, characterized in that, The second drive assembly (4) includes a second positioning frame (401), a second positioning shaft (402), a first drive helical gear (404), a second drive helical gear (405), and a third positioning shaft (406). The second positioning frame (401) is connected to the protective frame (109). The second positioning shaft (402) is rotatably mounted on the second positioning frame (401). The first drive helical gear (404) is connected to the second positioning shaft (402). The second drive helical gear (405) is sleeved on the third positioning shaft (406). The tooth surfaces of the first drive helical gear (404) and the second drive helical gear (405) mesh. The two ends of the third positioning shaft (406) are respectively provided with fourth positioning helical gears (407). Both ends of the third positioning shaft (406) are provided with a set of external warning components (3). Each set of external warning components (3) also includes a third positioning helical gear (307) and a second positioning screw (306). Each third positioning helical gear (307) meshes with the tooth surface of the corresponding fourth positioning helical gear (407). The lifting seat (303) is connected to the second positioning screw (306).

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