Analog optical fiber seismic laser detection device and control method thereof

Abstract

The application relates to the field of seismic exploration, in particular to a simulated optical fiber seismic laser detection device and a control method thereof, which comprises a mounting box, a mounting box is slidably connected in the mounting box, a first lifting mechanism is arranged in the mounting box, and the first lifting mechanism is used for adjusting the height of the mounting box; a mounting cover is arranged at the top of the mounting box through a plurality of supporting rods; the mounting box, the first lifting mechanism and three chambers are arranged, when the soil needs to be replaced after measurement contact, the mounting box is moved downward through the first lifting mechanism, the soil and the optical fiber sensor are quickly separated under the action of the gravity center, the difficulty of taking out the optical fiber sensor is reduced, and in the simulation process, the three kinds of soil only replace positions to add new soil, and new optical fiber sensors are not replaced, so that the data measured can be calculated and analyzed according to the principle of the control variable method.

Description

Technical Field

[0001] This invention relates to the field of seismic exploration, and in particular to a simulated fiber optic seismic laser detection device and its control method. Background Technology

[0002] Using fiber optic sensors to measure seismic waves is a new type of seismic wave detection technology that has been developed in recent years. It has advantages such as high sensitivity, resistance to lightning strikes and electromagnetic interference, good insulation, and strong organizational ability. Therefore, it has important application value in fields such as earthquake prediction, oil exploration, and safety monitoring.

[0003] Since my country is a country prone to earthquake disasters, how to reduce the damage caused by earthquakes has always been a concern. At present, many devices that simulate earthquake conditions have emerged. For example, the invention patent with application number CN201610277529.7 discloses a simulation fiber optic seismic laser detection device that can collect signal data in multiple layers and locations and perform simulation.

[0004] However, since seismic waves travel at different speeds in different soils, optical fibers of the same type need to be buried in different soils. In order to obtain more accurate data, the optical fibers need to be removed from the soil and then reburied in different soils. If the soil is hard soil, and the optical fibers are deep in the soil, this will increase the difficulty of removing the optical fibers.

[0005] To address these issues, this invention proposes a simulated fiber optic seismic laser detection device and its control method. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a simulated fiber optic seismic laser detection device and its control method.

[0007] Firstly, to achieve the above objectives, the technical solution adopted by the present invention is: a simulated fiber optic seismic laser detection device, comprising:

[0008] The installation box has an installation compartment slidably connected inside it, and a first lifting mechanism is provided inside the installation box for adjusting the height of the installation compartment.

[0009] The mounting cover is mounted on the top of the mounting box by several support rods, and three sets of fiber optic sensors are installed at the bottom of the mounting cover;

[0010] Three partitions are fixedly connected in a ring array within the mounting box to form three chambers, each of which is filled with soil.

[0011] A vibration mechanism for vibrating the soil within the chamber;

[0012] Three sealing doors are rotatably connected to the outer wall of the mounting box, corresponding to the positions of the three chambers.

[0013] Three slots, corresponding to the positions of the three sealing doors, are opened on the outer wall of the mounting box;

[0014] When the soil in the chamber needs to be replaced, the installation box is moved downward by the lifting mechanism. Under the action of gravity, the soil and the fiber optic sensor are separated. Then, the sealing door is opened at the slot and the soil is replaced and the chamber is filled. The fiber optic sensor in the corresponding position is buried, so as to bury the light sensor in different soils.

[0015] Preferably, the fiber optic sensor includes:

[0016] The optical fiber body is U-shaped and has a signal transmission section and a signal return section. The top end of the optical fiber body is fixedly connected to the top end of the mounting cover.

[0017] A laser emitter, wherein the laser emitter is connected to the signal processing segment end of the optical fiber body;

[0018] A signal receiver is connected to the signal backhaul end of the optical fiber body.

[0019] Preferred options also include:

[0020] A rotating platform, which is rotatably connected to the bottom of the mounting box;

[0021] A rotary drive mechanism is used to drive the rotary table to rotate.

[0022] Three storage shells, the top of each of the three storage shells passing through the bottom of the corresponding chamber and slidingly connected to the corresponding chamber, the top of the three storage shells being directly below the optical fiber sensor, and the bottom of the three storage shells extending to the top of the rotating platform;

[0023] Three sealing blocks are slidably sealed at the top of the storage shell at corresponding positions, and the bottoms of the three sealing blocks are fixedly connected to the top of the rotating platform by a bracket.

[0024] The second lifting mechanism is used to adjust the height of the three storage shells;

[0025] During the downward movement of the mounting box, the three storage shells are first moved upward through the soil by the second lifting mechanism, so that the optical fiber body is stored in the storage shell, thereby reducing the squeezing damage to the optical fiber body caused by the soil during the downward movement of the mounting box.

[0026] Preferably, a limiting mechanism is provided at the top of the sealing block, the limiting mechanism comprising:

[0027] Two first limiting plates are rotatably connected to the top of the sealing block via a first elastic reset member, and the two first limiting plates are located directly below the optical fiber body.

[0028] As the housing moves upward, it squeezes the two first limiting plates, causing them to flip and contact the side wall of the optical fiber body, thus limiting the position of the optical fiber body and allowing it to smoothly enter the housing.

[0029] Preferably, the limiting mechanism further includes:

[0030] Two second limiting plates are rotatably connected to the top of the sealing block via a second elastic reset member. The two second limiting plates are located at the signal progress segment and the signal return segment positions, respectively.

[0031] As the housing moves upward, it squeezes the two second limiting plates, causing them to flip and limit the signal progress segment and signal return segment respectively, thereby limiting the position of the optical fiber body and allowing it to smoothly enter the housing.

[0032] Preferably, the limiting mechanism further includes:

[0033] A cavity, wherein the cavity is formed within the first limiting plate;

[0034] Two pulling components, the bottom ends of the two pulling components respectively penetrate the top of the first limiting plate at the corresponding position, and the bottom of the pulling components are slidably connected to the cavity at the corresponding position;

[0035] Two distance sensors are symmetrically arranged on the inner wall near the top of the storage shell. The two distance sensors are used to detect the distance from the signal return segment and the signal progress segment to the inner wall of the storage shell, respectively.

[0036] As the housing moves upward, the distance sensor detects the distance from the optical fiber body to the inner wall of the housing. When the distance from the optical fiber body to the inner wall of the housing is lower than a preset value, the bottom of the optical fiber body is pulled by the pulling component, so that the signal return segment and the signal progress segment are moved away from the inner wall of the housing.

[0037] Preferred options also include:

[0038] Three flip plates are rotatably connected to the chambers at corresponding positions;

[0039] A rotating assembly for driving three flipping plates to flip;

[0040] After replacing the soil with fiber optic sensor, the rotating assembly drives the flip plate to flip, thereby moving the soil in the corresponding chamber, reducing the gaps in the soil, and ensuring that the fiber optic sensor makes full contact with the soil.

[0041] Secondly, to solve the above problems, the present invention also proposes a control method for a simulated fiber optic seismic laser detection device, which further includes a controller, the controller being disposed on the outer wall of the mounting box;

[0042] The control method for this detection device specifically includes:

[0043] The controller receives a request information sent by the distance sensor, which is generated by the distance sensor detecting the distance parameter from the optical fiber body to the inner wall of the housing.

[0044] The controller generates control information based on the request information, and the control information is used to activate the pull component.

[0045] The controller sends control information to the pulling component, causing the pulling component to pull the optical fiber body downwards, so that the two sides of the optical fiber body are away from the inner wall of the housing.

[0046] Specifically, the control method for the distance sensor includes:

[0047] The distance sensor detects the distance parameter from the optical fiber body to the inner wall of the storage shell. When the distance parameter is lower than the preset value, the distance sensor generates a request message.

[0048] The distance sensor sends a request to the controller in exchange for the controller generating control information.

[0049] Specifically, the control method for the pull component includes:

[0050] The pull component receives control information sent by the controller;

[0051] When the pulling component is activated, it pulls the optical fiber body downwards, moving both sides of the optical fiber body away from the inner wall of the housing.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] I. This invention, by setting up an installation box, a first lifting mechanism, and three chambers, allows the installation box to move downwards via the first lifting mechanism when soil needs to be replaced after measurement contact. Under the action of the center of gravity, the soil and fiber optic sensor are quickly separated, which helps to reduce the difficulty of removing the fiber optic sensor. Furthermore, during the simulation process, since the three types of soil are only replaced by adding new soil in different positions without replacing the fiber optic sensor, it is beneficial to calculate and analyze the measured data according to the principle of the controlled variable method.

[0054] Second, by setting up a receiving shell and a sealing block, when the soil needs to be replaced after the simulation ends, the second lifting mechanism is first activated to move the receiving shell upwards to store the optical fiber body. This helps to reduce the damage caused by the soil pulling on the optical fiber body during the downward movement of the soil in the installation box. After the rotation drive mechanism changes the position of the chamber, the second lifting mechanism moves the receiving shell upwards to store the optical fiber body in advance. Then, the first lifting mechanism moves the installation shell upwards to bury the receiving shell with soil. Subsequently, the second lifting mechanism moves the receiving shell downwards to detach the optical fiber body from the receiving shell and bury it with soil, further reducing the difficulty of replacing the soil.

[0055] Third, by setting a limiting mechanism, the present invention can limit the position of the optical fiber body, so that the optical fiber body can smoothly enter the housing, which helps to reduce the squeezing damage of the optical fiber body by the housing. Attached Figure Description

[0056] Figure 1 This is a flowchart of the control method of the present invention;

[0057] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0058] Figure 3 This is a connection diagram of the mounting box and mounting enclosure of the present invention;

[0059] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0060] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0061] Figure 6 This is a cross-sectional view of the mounting box of the present invention;

[0062] Figure 7 This is a connection diagram of the cylinder and mounting box of the present invention;

[0063] Figure 8 for Figure 7 Enlarged view at point C;

[0064] Figure 9 This is a cross-sectional view of the mounting box and storage shell of the present invention;

[0065] Figure 10 for Figure 9 Enlarged view at point D;

[0066] Figure 11 This is a connection diagram of the sealing shell and the limiting mechanism of the present invention;

[0067] Figure 12 This is a connection diagram of the second limiting plate and the second rotating seat of the present invention;

[0068] Figure 13 This is a cross-sectional view of the first limiting plate of the present invention;

[0069] Figure 14 This is a flowchart of the distance sensor control method of the present invention;

[0070] Figure 15 This is a flowchart of the pull component control method of the present invention.

[0071] In the diagram: 1. Mounting box; 101. Slot; 2. Controller; 3. Mounting housing; 301. Feed inlet; 302. Chamber; 4. Mounting cover; 5. Partition; 6. Sealing door; 7. Vibration motor; 8. Cylinder; 9. Sleeve; 10. Shock-absorbing spring; 11. Fiber optic body; 1101. Signal transmission section; 1102. Signal return section; 12. Laser transmitter; 13. Signal receiver; 14. Rotary table; 15. Storage shell; 16. Sealing 17. Stepper motor; 18. Electric telescopic rod; 19. First limiting plate; 20. First rotating seat; 21. First torsion spring; 22. Second limiting plate; 23. Second rotating seat; 24. Second torsion spring; 25. Cavity; 26. Distance sensor; 27. Hook; 28. First sensing electromagnetic block; 29. ​​Second sensing electromagnetic block; 30. Return spring; 31. Flip plate; 32. First gear; 33. Second gear; 34. Servo motor. Detailed Implementation

[0072] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0073] like Figures 2 to 13 The simulated fiber optic seismic laser detection device shown includes:

[0074] Mounting box 1, mounting box 3 is slidably connected inside mounting box 1, and a first lifting mechanism is provided inside mounting box 1 for adjusting the height of mounting box 3;

[0075] Mounting cover 4 is mounted on top of mounting box 1 by several support rods, and three sets of fiber optic sensors are installed at the bottom of mounting cover 4.

[0076] Three partitions 5 are fixedly connected in a ring array within the mounting box 3 to form three chambers 302, each of which is filled with soil.

[0077] Vibration mechanism, used to vibrate the soil inside chamber 302;

[0078] Three sealing doors 6 are rotatably connected to the outer wall of the mounting box 3, corresponding to the positions of the three chambers 302;

[0079] Three slots 101, corresponding to the positions of three sealing doors 6, are opened on the outer wall of the mounting box 1;

[0080] When the soil in chamber 302 needs to be replaced, the installation box 3 is moved downward by the lifting mechanism. Under the action of gravity, the soil and the fiber optic sensor are separated. Then, the sealing door 6 is opened at the slot 101 and the soil is replaced and the chamber 302 is filled in. The fiber optic sensor at the corresponding position is buried to achieve the purpose of burying the light sensor in different soils.

[0081] Specifically, since seismic waves travel at different speeds in different soils, optical fibers of the same type need to be buried in different soils. Furthermore, to obtain more accurate data, the optical fibers need to be removed from the soil and then reburied in different soils. If the soil is hard, and the optical fibers are deep within the soil, the difficulty of removing the fibers increases. This technical solution can solve these problems. The specific working method is as follows: Three chambers 302 are set up, each filled with sandy soil, clay soil, and loam soil respectively. Three sets of optical fiber sensors are buried in the soil within their respective chambers 302. When simulation is needed, a vibration mechanism is activated, causing the soil within the chambers 302 to vibrate. The vibration data is then measured using the optical fiber sensors.

[0082] When the soil needs to be replaced after the measurement contact, the first lifting mechanism is used to move the installation box 3 downward. Under the action of the center of gravity, the soil and the fiber optic sensor are quickly separated, which helps to reduce the difficulty of removing the fiber optic sensor.

[0083] During the process of the first lifting mechanism moving the installation box 3 downward, the sealing door 6 of the installation box 3 moves to the slot 101 position at the corresponding position. By opening the sealing door 6, the soil in the corresponding chamber 302 is collected. Then, under the action of the first lifting mechanism, the installation box 3 moves upward and resets. The soil is then replaced in the chamber 302 and filled from the feed port 301 on the top side wall of the installation box 3. The fiber optic sensor in the corresponding chamber 302 is buried, thereby burying the fiber optic sensor in different soils. Then, the vibration mechanism performs vibration simulation, causing the fiber optic sensor to vibrate in different soils, thereby acquiring multiple sets of data.

[0084] During the simulation, since the three types of soil were simply replaced by adding new soil in different locations, and no new fiber optic sensors were used, it was beneficial to calculate and analyze the measured data according to the principle of the controlled variable method.

[0085] As one possible implementation of the vibration mechanism, the vibration mechanism includes:

[0086] Three vibration motors 7 are fixedly connected to the bottom wall of the corresponding chamber 302;

[0087] Specifically, by activating three vibration motors 7, the soil inside the mounting box 3 is made to vibrate, providing a power source for the vibration.

[0088] As an optional implementation of the first lifting mechanism, the first lifting mechanism includes a cylinder 8, which is installed in the mounting box 1. The top end of the telescopic rod of the cylinder 8 is slidably inserted into the sleeve 9 which is fixedly connected to the bottom of the mounting box 3. A shock-absorbing spring 10 is fixedly connected between the top end of the telescopic rod of the cylinder 8 and the sleeve 9.

[0089] Specifically, by activating cylinder 8, the telescopic rod of cylinder 8 moves downward, thereby driving the mounting box 3 to move downward, completing the separation of soil and fiber optic sensor. At the same time, a shock-absorbing spring 10 is set to reduce the vibration of cylinder 8.

[0090] As one optional implementation of the fiber optic sensor, the fiber optic sensor includes:

[0091] The optical fiber body 11 is U-shaped and has a signal transmission section 1101 and a signal return section 1102. The top end of the optical fiber body 11 is fixedly connected to the top end of the mounting cover 4.

[0092] Laser emitter 12 is connected to the signal processing segment 1101 end of the optical fiber body 11;

[0093] Signal receiver 13 is connected to the signal backhaul section 1102 end of the optical fiber body 11;

[0094] Specifically, by activating the laser transmitter 12, the laser transmitter 12 emits a laser beam towards the end of the signal transmission segment 1101 of the optical fiber body 11. Then, the signal receiver 13 receives the transmitted laser signal from the signal return segment 1102 of the optical fiber body 11. During the transmission of the laser beam within the optical fiber body 11, due to the presence of a medium within the optical fiber, the laser beam undergoes total internal reflection within the optical fiber body 11. When the soil vibrates, the optical fiber body 11 is affected by the vibration and undergoes twisting deformation, thereby changing the reflection path of the laser beam and causing the signal receiver 13 to receive laser signals of different wavelengths.

[0095] In the specific implementation process, the optical fiber body 11 is made of different types of optical fibers;

[0096] Specifically, when the optical fiber body 11 is made of different types of optical fibers, the three chambers 302 are filled with the same soil.

[0097] In the specific implementation process, the optical fiber body 11 is an optical fiber of the same type;

[0098] Specifically, when the optical fiber body 11 is made of the same type of optical fiber, different soils are filled into the three chambers 302.

[0099] As a further embodiment of the present invention, it also includes:

[0100] Rotary table 14 is rotatably connected to the bottom of the mounting box 1;

[0101] A rotary drive mechanism is used to drive the rotary table 14 to rotate.

[0102] Three storage shells 15, the top of each of the three storage shells 15 passes through the bottom of the corresponding chamber 302 and is slidably connected to the corresponding chamber 302. The top of the three storage shells 15 is directly below the fiber optic sensor, and the bottom of the three storage shells 15 extends to the top of the rotating stage 14.

[0103] Three sealing blocks 16 slide to seal the top of the housing 15 at the corresponding positions, and the bottom of the three sealing blocks 16 are fixedly connected to the top of the rotating platform 14 by a bracket.

[0104] The second lifting mechanism is used to adjust the height of the three storage shells 15.

[0105] During the downward movement of the mounting box 3, the three storage shells 15 are first moved upward through the soil by the second lifting mechanism, so that the optical fiber body 11 is stored in the storage shell 15, thereby reducing the squeezing damage to the optical fiber body 11 caused by the soil during the downward movement of the mounting box 3.

[0106] Specifically, during the process of the installation box 3 moving downward to separate the soil and the optical fiber body 11, since the optical fiber body 11 is buried deep in the soil and in close contact with the soil, the downward movement of the soil will pull on the optical fiber body 11, which can easily cause damage to the optical fiber body 11. This technical solution can solve the above problems. The specific working method is as follows: when the soil needs to be changed at the end of the simulation, the second lifting mechanism is first activated to move the storage shell 15 upward, so that the top of the storage shell 15 passes through the soil and stores the optical fiber body 11 in the storage shell 15. Then, the first lifting mechanism is activated to move the installation box 3 downward, which drives the soil in the chamber 302 to move downward. Since the optical fiber body 11 and the soil around the optical fiber body 11 are stored in the storage shell 15 at this time, it is beneficial to reduce the damage caused by the soil pulling on the optical fiber body 11 during the downward movement of the soil in the installation box 3.

[0107] After the installation box 3 moves downward, the second lifting mechanism causes the storage shell 15 to move downward and reset. During the downward movement, the soil remaining in the storage shell 15 is pushed out of the storage shell 15 by the action of the sealing block 16, and then falls back into the cavity 25 at the corresponding position under the action of gravity. The sealing block 16 can be arc-shaped so that the soil can be fully separated from the sealing block 16 and the soil residue on the surface of the sealing block 16 can be reduced.

[0108] After the housing 15 moves downward and resets, the rotating drive mechanism is activated to rotate the rotating table 14 by 120 degrees, thereby rotating the mounting box 3 by 120 degrees and changing the position of the chamber 302. Then, the second lifting mechanism moves the housing 15 upward to store the optical fiber body 11 in advance. Then, the first lifting mechanism moves the mounting shell upward to bury the housing 15 with soil. Subsequently, the second lifting mechanism moves the housing 15 downward to detach the optical fiber body 11 from the housing 15 and bury it with soil, further reducing the difficulty of changing the soil.

[0109] In the specific implementation process, the bottom of cylinder 8 is fixedly connected to the top of rotary table 14.

[0110] As an optional embodiment of the present invention, the rotary drive mechanism includes a stepper motor 17, which is fixedly connected to the bottom of the mounting box 1, and the output shaft of the stepper motor 17 is fixedly connected to the rotary table 14.

[0111] Specifically, by starting the stepper motor 17, the output shaft of the stepper motor 17 is rotated 120 degrees, thereby causing the rotating table 14 to rotate 120 degrees. Under the connection of the cylinder 8 and the housing 15, the mounting box 3 is rotated 120 degrees, thereby completing the replacement of the soil position so as to bury the fiber optic sensors in different positions.

[0112] As an optional embodiment of the present invention, the second lifting mechanism includes:

[0113] Three electric telescopic rods 18 are fixedly connected to the top of the rotating platform 14 in an array. The three electric telescopic rods 18 are located inside the storage shells 15 at corresponding positions. The movable rods of the three electric telescopic rods 18 are fixedly connected to the storage shells 15 at corresponding positions.

[0114] Specifically, before the soil and optical fiber are separated, the electric telescopic rod 18 is activated, causing its movable rod to move upward, thereby causing the housing 15 to move upward. After the mounting box 3 moves downward, the movable rod of the electric telescopic rod 18 moves downward to reset, causing the housing 15 to move downward, so as to push the soil out of the housing 15. Then, the movable rod of the electric telescopic rod 18 moves upward again to re-accommodate the optical fiber body 11. After the soil has completed the switching and buried the housing 15, the movable rod of the electric telescopic rod 18 moves downward to detach the optical fiber body 11 from the housing 15 and bury it with the soil.

[0115] As a further embodiment of the invention, a limiting mechanism is provided at the top of the sealing block 16, the limiting mechanism including:

[0116] Two first limiting plates 19 are rotatably connected to the top of the sealing block 16 via a first elastic reset member, and the two first limiting plates 19 are located directly below the optical fiber body 11.

[0117] As the housing 15 moves upward, it squeezes the two first limiting plates 19 by squeezing, causing the first limiting plates 19 to flip and contact the side wall of the optical fiber body 11, thereby limiting the position of the optical fiber body and allowing the optical fiber body 11 to smoothly enter the housing 15.

[0118] Specifically, during the upward movement of the housing 15 to house the optical fiber body 11, especially during the second housing process, the optical fiber body 11, having separated from the soil, is suspended in the air and prone to shaking. This can cause the housing 15 to squeeze against the optical fiber body 11, potentially damaging it. This technical solution addresses these issues. The specific working method is as follows: during the upward movement of the housing 15, the top of the housing 15 presses and pushes the two first limiting plates 19, causing them to flip and move closer to the optical fiber body 11, limiting its front-to-back position. Figure 11As shown, arrow a indicates the front-to-back direction of the optical fiber body 11, so as to make the housing 15 stable when housing the optical fiber body 11, which helps to reduce the squeezing damage to the optical fiber body 11.

[0119] In the specific implementation process, the top of the sealing block 16 is fixedly connected to two first rotating seats 20 in the front and rear direction of the optical fiber body 11, and the rotating shaft of the first limiting plate 19 rotates to be connected to the first rotating seats 20.

[0120] As an optional embodiment of the first elastic reset member, the first elastic reset member includes a first torsion spring 21, which is sleeved on the rotating shaft surface of the first limiting plate 19, and the two ends of the first torsion spring 21 are respectively fixedly connected to the first rotating seat 20 and the first limiting plate 19.

[0121] Specifically, as the housing 15 moves upward, the top of the housing 15 presses against and pushes the two first limiting plates 19, causing the two first limiting plates 19 to flip. During the flipping of the first limiting plates 19, the first torsion spring 21 contracts and deforms. As the housing 15 moves downward, the housing 15 releases the pressure on the first limiting plates 19. Under the action of the first torsion spring 21, the first limiting plates 19 move away from the optical fiber body 11.

[0122] As a further embodiment of the present invention, the limiting mechanism further includes:

[0123] Two second limiting plates 22 are rotatably connected to the top of the sealing block 16 through a second elastic reset member. The two second limiting plates 22 are located at the signal progress segment 1101 and the signal return segment 1102, respectively.

[0124] As the housing 15 moves upward, it squeezes the two second limiting plates 22 by pressing, causing the second limiting plates 22 to flip and limit the signal progress segment 1101 and the signal return segment 1102 respectively, so as to limit the position of the optical fiber body and allow the optical fiber body 11 to smoothly enter the housing 15.

[0125] Specifically, as the housing 15 moves upward, the top of the housing 15 presses against and pushes the two second limiting plates 22, causing the two second limiting plates 22 to flip and move closer to the signal transmission section 1101 and signal return section 1102 of the optical fiber body 11, thus limiting the left and right sides of the signal transmission section 1101 and signal return section 1102 of the optical fiber body 11. Figure 11 As shown, arrow b indicates the left-right direction of the optical fiber body 11, which further stabilizes the optical fiber body 11 and helps to reduce the squeezing damage to the optical fiber body 11.

[0126] In the specific implementation process, the top of the sealing block 16 is fixedly connected to two second rotating seats 23 at the positions of the signal progress section 1101 and the signal return section 1102 of the optical fiber body 11, and the rotation shaft of the second limiting plate 22 rotates to be connected to the second rotating seats 23.

[0127] As an optional embodiment of the second elastic reset member, the second elastic reset member includes a second torsion spring 24, which is sleeved on the rotating shaft surface of the second limiting plate 22, and the two ends of the second torsion spring 24 are respectively fixedly connected to the second rotating seat 23 and the second limiting plate 22.

[0128] Specifically, as the housing 15 moves upward, the top of the housing 15 presses against and pushes the two second limiting plates 22, causing the two second limiting plates 22 to flip. During the flipping of the second limiting plates 22, the second torsion spring 24 contracts and deforms. As the housing 15 moves downward, the housing 15 releases the pressure on the second limiting plates 22. Under the action of the second torsion spring 24, the second limiting plates 22 move away from the optical fiber body 11.

[0129] As a further embodiment of the present invention, the limiting mechanism further includes:

[0130] Cavity 25, cavity 25 is formed within the first limiting plate 19;

[0131] Two pull components, the bottom ends of the two pull components respectively penetrate through the top of the first limiting plate 19 at the corresponding position, and the bottom of the pull components are slidably connected in the cavity 25 at the corresponding position;

[0132] Two distance sensors 26 are symmetrically arranged on the inner wall near the top of the storage shell 15. The two distance sensors 26 are used to detect the distance from the signal return segment 1102 and the signal progress segment 1101 to the inner wall of the storage shell 15, respectively.

[0133] During the upward movement of the housing 15, the distance between the optical fiber body 11 and the inner wall of the housing 15 is detected by the distance sensor 26. When the distance between the optical fiber body 11 and the inner wall of the housing 15 is lower than the preset value, the bottom of the optical fiber body 11 is pulled by the pulling component, so that the signal return segment 1102 and the signal progress segment 1101 are moved away from the inner wall of the housing 15.

[0134] Specifically, during the second process of storing the optical fiber body 11 into the storage shell 15, the distance sensor 26 detects the distance between the optical fiber body 11 and the storage shell 15 along the path. When the distance between the optical fiber body 11 and the inner wall of the storage shell 15 is lower than a preset value, the bottom of the optical fiber body 11 is pulled by the pulling component, so that the signal return segment 1102 and the signal progress segment 1101 are moved away from the inner wall of the storage shell 15, so as to store the optical fiber body 11 into the storage shell 15.

[0135] The drag-and-drop component includes:

[0136] Hook 27, the bottom end of hook 27 passes through the top end of the first limiting plate 19 at the corresponding position, and the bottom of hook 27 is slidably connected to the cavity 25 at the corresponding position;

[0137] The first sensing electromagnetic block 28 is fixedly connected to the bottom of the hook 27;

[0138] The second electromagnetic induction block 29 is fixedly connected inside the cavity 25;

[0139] The return spring 30 has its two ends fixedly connected to the first induction electromagnetic block 28 and the second induction electromagnetic block 29, respectively.

[0140] Specifically, during the second process of storing the optical fiber body 11 into the storage shell 15, the distance sensor 26 detects the distance between the optical fiber body 11 and the storage shell 15 along the path. When the distance between the optical fiber body 11 and the inner wall of the storage shell 15 is lower than a preset value, the first sensing electromagnetic block 28 and the second sensing electromagnetic block 29 generate opposite magnetic forces. Due to the attraction of opposite magnetic forces, the hook 27 moves downward. During the downward movement of the hook 27, the hook 27 pulls the bottom of the optical fiber body 11, causing the signal return segment 1102 and the signal progress segment 1101 to move closer to each other, thereby making the two sides of the optical fiber body 11 move away from the inner wall of the storage shell 15, which is conducive to storing the optical fiber body 11 into the storage shell 15.

[0141] As a further embodiment of the present invention, it also includes:

[0142] Three flip plates 31 are rotatably connected to the corresponding chambers 302;

[0143] A rotating assembly is used to drive the three flip plates 31 to flip.

[0144] After the fiber optic sensor is replaced with soil, the rotating assembly drives the flip plate 31 to flip, thereby moving the soil in the corresponding chamber 302, reducing the gaps in the soil, and making the fiber optic sensor fully contact the soil.

[0145] Specifically, during the process of changing the soil position and burying the optical fiber body 11 at the corresponding position, the soil is difficult to fully contact the optical fiber body 11 due to the effect of the housing 15, which can easily reduce the accuracy of the data. This technical solution can solve the above problems. The specific working method is as follows: by setting up the flip plate 31, after the soil position is changed and the optical fiber body 11 at the corresponding position is buried, the rotating component is activated to make the three flip plates 31 rotate, which moves the soil in the corresponding position chamber 302, so that the optical fiber sensor can fully contact the soil, reduce the gap in the soil, and help reduce data errors.

[0146] As one optional implementation of the rotating component, the rotating component includes:

[0147] Three first gears 32 are coaxially fixed with the corresponding flip plate 31.

[0148] The second gear 33 is rotatably connected to the top of the junction of the three partitions 5, and the second gear 33 meshes with the three gears respectively.

[0149] Servo motor 34 is fixedly connected to the top of partition 5, and the output shaft of servo motor 34 is coaxially fixedly connected to the second gear 33.

[0150] Specifically, by starting the servo motor 34, the output shaft of the servo motor 34 rotates, thereby causing the second gear 33 to rotate. Through the meshing transmission of the second gear 33 and the first gear 32, the three first gears 32 rotate, thereby causing the three flip plates 31 to flip and move the soil in the corresponding chambers 302, so that the fiber optic sensor can fully contact the soil, reducing the gaps in the soil and helping to reduce data errors.

[0151] Secondly, referring to Figure 1 , Figure 14 and Figure 15 To solve the above problems, the present invention also proposes a control method for a simulated fiber optic seismic laser detection device, which further includes a controller 2, which is disposed on the outer side wall of the mounting box 1.

[0152] The control method for this detection device specifically includes:

[0153] The controller 2 receives a request message sent by the distance sensor 26. The request message is generated by the distance sensor 26 detecting the distance parameter from the fiber optic body 11 to the inner wall of the housing 15.

[0154] Controller 2 generates control information based on the request information, and the control information is used to start the pull component;

[0155] The controller 2 sends control information to the pulling component, causing the pulling component to pull the optical fiber body 11 downward, so that the two sides of the optical fiber body 11 are away from the inner wall of the housing 15.

[0156] In this process, after receiving the request information sent by the distance sensor 26, the controller 2 generates control information and then sends the control information to the pulling component, which causes the pulling component to pull the optical fiber body 11 downward, so that the two sides of the optical fiber body 11 are away from the inner wall of the housing 15. This reduces the contact between the optical fiber body 11 and the inner wall of the housing 15 during the process of storing the optical fiber body 11 into the housing 15, thereby reducing damage to the optical fiber body 11.

[0157] Specifically, the control methods for the distance sensor 26 include:

[0158] The distance sensor 26 detects the distance parameter from the optical fiber body 11 to the inner wall of the storage shell 15. When the distance parameter is lower than a preset value, the distance sensor 26 generates a request message.

[0159] Distance sensor 26 sends a request to controller 2, requesting controller 2 to generate control information;

[0160] Among them, the distance sensor 26 detects the distance parameter from the optical fiber body 11 to the inner wall of the housing 15. When the distance parameter is lower than the preset value, the distance sensor 26 generates a request message. After generating the request message, the distance sensor 26 sends the request message to the controller 2 to request the controller 2 to generate control information.

[0161] Specifically, the control methods for drag-and-drop components include:

[0162] The pull component receives control information sent by controller 2;

[0163] When the pulling component is activated, it pulls the optical fiber body 11 downward, causing the two sides of the optical fiber body 11 to move away from the inner wall of the housing 15.

[0164] The first induction electromagnetic block 28 and the second induction electromagnetic block 29 receive control information sent by the controller 2, which causes the first induction electromagnetic block 28 and the second induction electromagnetic block 29 to be powered on and generate opposite magnetic forces. Due to the attraction of opposite magnetic forces, the hook 27 moves downward, thereby causing the hook 27 to pull the optical fiber body 11 downward, so that the two sides of the optical fiber body 11 are away from the inner wall of the housing 15. This reduces the contact between the optical fiber body 11 and the inner wall of the housing 15 during the process of storing the optical fiber body 11, thus reducing the damage to the optical fiber body 11.

[0165] The working principle of this invention is as follows: Three chambers 302 are set up, which are filled with sandy soil, clay soil and loam soil respectively. Three sets of fiber optic sensors are buried in the soil in the corresponding chambers 302. When simulation is required, the vibration mechanism is activated to make the soil in the chambers 302 vibrate, and the vibration data is measured by the fiber optic sensors.

[0166] When the soil needs to be replaced after the measurement contact, the first lifting mechanism is used to move the installation box 3 downward. Under the action of the center of gravity, the soil and the fiber optic sensor are quickly separated, which helps to reduce the difficulty of removing the fiber optic sensor.

[0167] During the downward movement of the installation box 3 by the first lifting mechanism, the sealing door 6 of the installation box 3 moves to the slot 101 position. By opening the sealing door 6, the soil in the corresponding chamber 302 is collected. Then, under the action of the first lifting mechanism, the installation box 3 moves upward and resets. The soil is then replaced in the chamber 302 and filled from the feed inlet 301 on the top side wall of the installation box 3. The fiber optic sensor in the corresponding chamber 302 is buried, thereby burying the fiber optic sensor in different soils. Then, the vibration mechanism simulates vibration, causing the fiber optic sensor to vibrate in different soils, thereby acquiring multiple sets of data.

[0168] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An analog fiber optic seismic laser detection device, characterized by, include: The mounting box (1) has a mounting box (3) slidably connected inside it. The mounting box (1) is provided with a first lifting mechanism, which is used to adjust the height of the mounting box (3). Mounting cover (4), which is mounted on the top of the mounting box (1) by several support rods, and three sets of fiber optic sensors are provided at the bottom of the mounting cover (4); Three partitions (5) are fixedly connected in a ring array within the mounting box (3) to form three chambers (302), each of which is filled with soil. A vibration mechanism for vibrating the soil within the chamber (302); Three sealing doors (6) are rotatably connected to the outer wall of the mounting box (3) corresponding to the positions of the three chambers (302); Three slots (101) are provided on the outer wall of the mounting box (1) at positions corresponding to the three sealing doors (6); When the soil in the chamber (302) needs to be replaced, the installation box (3) is moved downward by the lifting mechanism. Under the action of gravity, the soil and the fiber optic sensor are separated. Then, the sealing door (6) is opened at the slot (101) and the soil is collected. Then, under the action of the first lifting mechanism, the installation box (3) is moved upward and reset. The soil is then replaced in the chamber (302) and filled from the feed port (301) opened on the top side wall of the installation box (3). The fiber optic sensor at the corresponding position is buried to achieve the burial of the light sensor in different soils.

2. The analog fiber-optic seismic laser detection device of claim 1, wherein, The fiber optic sensor includes: The optical fiber body (11) is U-shaped and has a signal transmission section (1101) and a signal return section (1102). The top end of the optical fiber body (11) is fixedly connected to the top end of the mounting cover (4). A laser emitter (12) is connected to the signal processing segment (1101) end of the optical fiber body (11); A signal receiver (13) is connected to the signal backhaul section (1102) end of the optical fiber body (11).

3. The analog fiber-optic seismic laser detection device of claim 2, wherein, Also includes: A rotating platform (14) is rotatably connected to the bottom of the mounting box (1); A rotary drive mechanism is provided for driving the rotary table (14) to rotate. Three storage shells (15) are provided. The top of each of the three storage shells (15) passes through the bottom of the corresponding chamber (302) and is slidably connected to the corresponding chamber (302). The top of each of the three storage shells (15) is directly below the optical fiber sensor, and the bottom of each of the three storage shells (15) extends to the top of the rotating platform (14). Three sealing blocks (16) are slidably sealed on the top of the storage shell (15) at corresponding positions, and the bottom of the three sealing blocks (16) are fixedly connected to the top of the rotating platform (14) by a bracket. The second lifting mechanism is used to adjust the height of the three storage shells (15); During the downward movement of the mounting box (3), the three storage shells (15) are first moved upward through the soil by the second lifting mechanism, so that the optical fiber body (11) is stored in the storage shell (15) to reduce the squeezing damage to the optical fiber body (11) caused by the soil during the downward movement of the mounting box (3).

4. The analog fiber-optic seismic laser detection device of claim 3, wherein, A limiting mechanism is provided at the top of the sealing block (16), the limiting mechanism comprising: Two first limiting plates (19) are rotatably connected to the top of the sealing block (16) through a first elastic reset member. The two first limiting plates (19) are located directly below the optical fiber body (11). During the upward movement of the housing (15), the housing (15) squeezes the two first limiting plates (19) by squeezing, causing the first limiting plates (19) to flip and contact the side wall of the optical fiber body (11) to limit the position of the optical fiber body, so that the optical fiber body (11) can smoothly enter the housing (15).

5. The analog fiber-optic seismic laser detection device of claim 4, wherein, The limiting mechanism further includes: Two second limiting plates (22) are rotatably connected to the top of the sealing block (16) through a second elastic reset member. The two second limiting plates (22) are located at the signal progress segment (1101) and the signal return segment (1102) respectively. During the upward movement of the housing (15), the housing (15) squeezes the two second limiting plates (22) by squeezing, causing the second limiting plates (22) to flip and limit the signal progress segment (1101) and the signal return segment (1102) respectively, so as to limit the position of the optical fiber body, so that the optical fiber body (11) can smoothly enter the housing (15).

6. The analog fiber-optic seismic laser detection device of claim 4, wherein, The limiting mechanism further includes: Cavity (25), the cavity (25) is formed inside the first limiting plate (19); Two pull components, the bottom ends of the two pull components respectively penetrate the top of the first limiting plate (19) at the corresponding position, and the bottom of the pull components are slidably connected in the cavity (25) at the corresponding position; Two distance sensors (26) are symmetrically arranged on the inner wall near the top of the storage shell (15). The two distance sensors (26) are used to detect the distance from the signal return segment (1102) and the signal progress segment (1101) to the inner wall of the storage shell (15), respectively. During the upward movement of the housing (15), the distance between the optical fiber body (11) and the inner wall of the housing (15) is detected by the distance sensor (26). When the distance between the optical fiber body (11) and the inner wall of the housing (15) is lower than the preset value, the bottom of the optical fiber body (11) is pulled by the pulling component, so that the signal return segment (1102) and the signal progress segment (1101) are moved away from the inner wall of the housing (15).

7. The analog fiber-optic seismic laser detection device of claim 1, wherein, Also includes: Three flip plates (31) are rotatably connected in the chambers (302) at corresponding positions; A rotating assembly for driving three flip plates (31) to flip; After the fiber optic sensor is replaced with soil, the rotating assembly drives the flip plate (31) to flip, thereby moving the soil in the corresponding chamber (302) to reduce the gaps in the soil and make the fiber optic sensor fully contact the soil.

8. A control method of an analog optical fiber seismic laser detection device, suitable for the analog optical fiber seismic laser detection device of claim 6, characterized in that, It also includes a controller (2), which is disposed on the outer side wall of the mounting box (1); The control method for this detection device specifically includes: The controller (2) receives a request message sent by the distance sensor (26), which is generated by the distance sensor (26) detecting the distance parameter from the fiber body (11) to the inner wall of the storage shell (15); The controller (2) generates control information based on the request information, and the control information is used to start the pull component; The controller (2) sends control information to the pulling component, causing the pulling component to pull the optical fiber body (11) downward, so that the two sides of the optical fiber body (11) are away from the inner wall of the storage shell (15).

9. The control method of the analog optical fiber seismic laser detection device according to claim 8, wherein, The specific control method for the distance sensor (26) includes: The distance sensor (26) detects the distance parameter from the fiber optic body (11) to the inner wall of the storage shell (15). When the distance parameter is lower than the preset value, the distance sensor (26) generates a request message. The distance sensor (26) sends a request to the controller (2) to request the controller (2) to generate control information.

10. The control method of the analog optical fiber seismic laser detection device according to claim 8, wherein, The specific control method for the pull component includes: The pull component receives control information sent by the controller (2); When the pulling component is activated, it pulls the fiber body (11) downward, causing the two sides of the fiber body (11) to move away from the inner wall of the housing (15).

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