Optical fiber splice closure with positioning function and application system

Abstract

The invention relates to the technical field of optical fiber communication equipment, and discloses an optical fiber splice closure with a positioning function and an application system. The junction box body is composed of a bottom box frame and a top box cover, the top box cover is installed at the top of the bottom box frame through bolts, pipe inlet holes are formed in the two sides of the junction box body, and the pipe inlet holes are used for leading external optical fiber pipes into the junction box body; the bottom box frame is provided with a welding disc, the welding disc is used for connecting optical fiber pipe joints, the top of the welding disc is provided with a low-frequency RFID positioning module, and through the arrangement of the low-frequency RFID positioning module on the optical fiber splice closure, when optical fiber pipe transmission goes wrong, through a positioning management system, the optical fiber splice closure can be accurately positioned. A worker can quickly obtain the position information of the fault junction box and formulate an optimal maintenance route, so that the maintenance efficiency is improved, the network interruption time caused by a fault is reduced, and the stable operation of a communication network is ensured.

Description

Technical Field

[0001] This application relates to the field of optical fiber communication equipment technology, specifically to an optical fiber splice box and application system with positioning function, which is particularly suitable for underground buried optical fiber communication networks, enabling accurate detection and intelligent management of underground optical fiber splice boxes. Background Technology

[0002] In fiber optic communication networks, fiber optic splice boxes are used to connect and protect two or more optical fibers, ensuring stable transmission of fiber optic signals. However, with the continuous expansion of fiber optic networks and the advancement of municipal engineering projects such as "undergrounding of overhead lines," a large number of fiber optic splice boxes need to be buried 1-2 meters underground. However, traditional fiber optic splice boxes have revealed several key problems in management and maintenance:

[0003] On the one hand, traditional fiber optic splice boxes rely on ground markers for location marking. However, in underground installations, these markers are easily lost or moved due to environmental changes, urban construction, or human factors, making it difficult for maintenance personnel to locate the target splice box during fault repairs. On the other hand, existing positioning technologies, such as conventional low-frequency RFID devices, have a detection range of only about 1 centimeter, which cannot meet the detection needs of deep underground installations. This forces personnel to blindly dig within a range of tens of meters, resulting in a significant waste of manpower and resources. Furthermore, splice boxes are widely distributed and located in complex environments within large communication networks. Fault repairs rely excessively on the experience of construction personnel, lacking scientific and technical support, leading to low maintenance efficiency. At the same time, routine inspections are difficult to implement effectively, and accountability is challenging, further exacerbating the pressure on network operation and maintenance. Summary of the Invention

[0004] The purpose of this application is to provide a fiber optic splice box and application system with positioning function to solve the problems of difficult positioning of fiber optic splice boxes in deep underground scenarios, easy failure of traditional markers, and insufficient detection distance of conventional positioning technology. It enables rapid acquisition of the location information of faulty splice boxes, formulation of the best maintenance route, improvement of maintenance efficiency, reduction of network interruption time caused by faults, and reduction of resource waste caused by blind excavation, thereby ensuring the stable operation of fiber optic communication networks.

[0005] To achieve the above objectives, this application provides the following technical solution: a fiber optic splice box with positioning function; comprising a splice box body, a buffer assembly, and a low-frequency RFID positioning module; the splice box body is composed of a bottom frame and a top cover, wherein the top cover is bolted to the top of the bottom frame; both sides of the splice box body have inlet holes for introducing external fiber optic tubes into the splice box body; a fusion splice tray is provided on the bottom frame; the low-frequency RFID positioning module is located on the top of the fusion splice tray for positioning the splice box body; the buffer assembly is installed on the side of the splice box body corresponding to the inlet hole for absorbing the axial impact force applied to the fiber optic tube from the outside, thereby protecting the fiber optic connector on the fusion splice tray and the low-frequency RFID positioning module from mechanical vibration or displacement.

[0006] This application also provides an application system based on fiber optic splice boxes, including: at least one fiber optic splice box with positioning function as described above; a handheld RFID detector, used to approach the fiber optic splice box during inspection, generate a low-frequency electromagnetic field to passively activate the low-frequency RFID positioning module, and read the unique identifier ID and signal strength information of the low-frequency RFID positioning module; a management service center, communicatively connected to the handheld RFID detector, used to: receive and store data from the handheld RFID detector; determine the geographical coordinates of each fiber optic splice box according to the signal strength information through a weighted fusion algorithm; associate the unique identifier ID, geographical coordinates, and inspection time, and generate and update asset maps and inspection records using GIS technology.

[0007] Compared with the prior art, the beneficial effects of this application are:

[0008] Compared to existing fiber optic splice boxes, this application adds a low-frequency RFID positioning module to the top of the splice tray. Through the cooperation of this positioning module and the positioning management system, when problems occur in the fiber optic tube transmission, staff can quickly obtain the location information of the faulty splice box, formulate the optimal repair route, improve maintenance efficiency, reduce network downtime caused by faults, and ensure the stable operation of the fiber optic tube communication network. Furthermore, low-frequency RFID technology has the characteristics of strong signal penetration and low susceptibility to environmental interference, enabling precise positioning of fiber optic splice boxes in complex environments such as indoors and underground pipelines, with a positioning accuracy of several meters. This significantly shortens the time required for staff to locate splice boxes. At the same time, compared to other positioning technologies, low-frequency RFID technology has lower equipment costs and is simpler to deploy, requiring no large-scale infrastructure construction, thus reducing the construction and maintenance costs of the fiber optic tube communication network.

[0009] Compared to traditional fiber optic splice boxes, this application features a buffer assembly on one side of the fiber optic splice box, comprising a buffer frame, a buffer roller, a connector, a connector, and a buffer spring. The fiber optic tube passes through the buffer assembly. When the fiber optic tube is pulled by external forces, the force is first applied to the buffer roller. Under this force, the buffer roller moves, transferring the force to the buffer spring. The buffer spring then reduces this force, preventing it from directly acting on the connection between the splice box body and the fiber optic tube, i.e., on the sealing ring. This reduces damage to the sealing ring, ensures the sealing effect of the splice box body, and further improves the service life of the fiber optic splice box.

[0010] Following the aforementioned use of buffer components, this application designs the sealing ring as hollow. By injecting airflow at appropriate pressure into the sealing ring, it expands, thereby making the connection between the sealing ring and the inlet hole and the optical fiber tube tighter. Under this design, during the long-term use of the optical fiber splice box, when the sealing ring wears down, the increased airflow ensures the tightness of the connection between the sealing ring and the splice box body and the optical fiber tube, thus guaranteeing the sealing effect of the splice box body and extending the service life of the optical fiber splice box.

[0011] Following the use of the aforementioned buffer assembly, this application provides a lower pressure plate and a threaded rod on the buffer roller of the buffer assembly. After one end of the optical fiber tube is moved into the optical fiber splice box, the lower pressure plate is lowered by rotating the threaded rod, thus fixing the optical fiber tube. In this state, the shaking of the optical fiber tube can be reduced, which can reduce the shaking effect caused by the optical fiber tube during connection, ensure the stability of the optical fiber tube after it is installed in the splice box, and facilitate the operation of the operator. Attached Figure Description

[0012] Figure 1 This is a perspective view of the main structure of a fiber optic splice box with positioning function according to this application.

[0013] Figure 2 This is a perspective view of the installation position structure of the buffer frame and the junction box body in a fiber optic splice box with positioning function according to this application.

[0014] Figure 3 This is a schematic diagram of the structure of the fiber optic splice box with positioning function in this application.

[0015] Figure 4 This is a schematic diagram of a dedicated mounting slot in a fiber optic splice box with positioning function according to this application.

[0016] Figure 5 This is a schematic diagram of the buffer component in a fiber optic splice box with positioning function according to this application.

[0017] Figure 6This is a cross-sectional view of the buffer component in a fiber optic splice box with positioning function according to this application.

[0018] Figure 7 This is a schematic diagram of the sealing ring in a fiber optic splice box with positioning function according to this application.

[0019] Figure 8 This is a schematic diagram of the installation position structure of the lower pressure plate and the threaded rod in a fiber optic splice box with positioning function according to this application.

[0020] Figure 9 for Figure 2 Enlarged 3D view of the structure at point A in the middle;

[0021] Figure 10 This is an operational diagram illustrating the use of a low-frequency RFID positioning module in a fiber optic splice box with positioning function, as described in this application.

[0022] In the diagram: 1. Connector box body; 101. Bottom box frame; 102. Top box cover; 2. Buffer frame; 3. Fiber optic tube; 4. Inlet hole; 5. Sealing ring; 6. Welding tray; 7. Buffer roller; 8. Connecting cylinder; 9. Connector; 10. Buffer spring; 11. Air duct; 12. Exhaust pipe one; 13. Exhaust pipe two; 14. Lower pressure plate; 15. Threaded rod; 16. Pressurizing rubber strip; 17. Low-frequency RFID positioning module; 18. Handheld RFID detector; 19. Management service center; 20. Control terminal; 21. Dispatch center; 22. GIS server. Detailed Implementation

[0023] Example 1

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] according to Figure 1 and Figure 4As shown, this embodiment discloses a fiber optic splice box with positioning function, including a splice box body 1, a buffer assembly, and a low-frequency RFID positioning module 17. The splice box body 1 is composed of a bottom frame 101 and a top cover 102, wherein the top cover 102 is bolted to the top of the bottom frame 101. Both sides of the splice box body 1 are provided with inlet holes 4, which are used to introduce external fiber optic tubes 3 into the splice box body 1. A fusion splice tray 6 is provided on the bottom frame 101. The top of the splice box body has a dedicated installation slot for the low-frequency RFID positioning module (e.g., a size of 119×340×10mm, which can be finely adjusted according to actual debugging). The low-frequency RFID positioning module is fixedly installed in the dedicated installation slot and located on top of the fusion splice tray for positioning the splice box body.

[0026] In some examples, to further enhance the functionality and practicality of the product, the fiber optic splice box can also be equipped with integrated functional units, including a dual-frequency RFID positioning enhancement module, an environmental status sensing unit, an adaptive sealing buffer linkage mechanism, and a modular quick-replacement structure. The following provides a detailed description of these optional optimization schemes: The side of the fusion splice tray 6 can be additionally integrated with a miniature multi-parameter sensor unit to achieve integrated "positioning + environmental status monitoring"; the buffer assembly can be optimized into an adaptive sealing buffer linkage mechanism to improve sealing stability and fiber optic fixing reliability; the low-frequency RFID positioning module can be upgraded to a dual-frequency collaborative architecture and adopt a modular quick-replacement design for easy maintenance.

[0027] The buffer assembly is installed on the side of the splice box 1 corresponding to the inlet hole 4, and is used to absorb the axial impact force applied to the optical fiber tube 3 from the outside, so as to protect the optical fiber connector on the fusion splice tray 6 and the low frequency RFID positioning module 17 from mechanical vibration or displacement.

[0028] In actual use, the low-frequency RFID positioning module 17 is fixed in the dedicated installation slot by snap-fit ​​connection or screw fastening, ensuring that it will not loosen when the junction box body 1 is subjected to vibration, impact or underground burial environment, and will not affect the normal operation and function of the junction box (customized adaptation can be made through mold opening process to ensure installation stability and space adaptability).

[0029] In some examples, the low-frequency RFID positioning module can adopt a modular quick-replacement design: the module is connected to the fusion splice tray 6 through a standard interface, the shell is sealed with a snap-fit, and the bottom is provided with a foolproof positioning groove and metal contacts to ensure accurate installation and reliable contact. It supports hot-swapping operation, and replacement and maintenance can be completed without disassembling the entire splice box, with a replacement time of ≤5 minutes; at the same time, the fusion splice tray 6 can be equipped with a quick-release structure, which is fixed to the bottom box frame 101 by elastic buckles. There is no need to loosen the fiber optic tube 3 when disassembling, further improving maintenance efficiency.

[0030] The low-frequency RFID positioning module 17 mainly consists of a low-frequency RFID tag (passive design) and a signal processing circuit. The low-frequency RFID tag stores the unique identification code of the splice box, as well as location information, the line it belongs to, and other relevant data. The signal processing circuit is responsible for communicating with the handheld RFID detector 18. The handheld RFID detector 18 can generate a 134KHz low-frequency electromagnetic field. When it approaches a fiber optic splice box buried 1-2 meters underground, the electromagnetic field provides passive energy to activate the low-frequency RFID positioning module 17. The activated low-frequency RFID tag sends its stored data to the handheld RFID detector 18. When the low-frequency RFID positioning module is used in conjunction with the matching handheld RFID detector 18, in actual application scenarios where the burial depth is 1-2 meters, the effective detection distance is ≥2 meters, and the positioning accuracy is ≤3 meters.

[0031] In some examples, the low-frequency RFID positioning module can be upgraded to a dual-frequency RFID positioning enhancement module. For instance, based on the original low-frequency RFID positioning module, a UHF ultra-high frequency RFID chip is added to form a dual-frequency collaborative positioning architecture: the low-frequency RFID (134KHz) retains its advantages of strong penetration and adaptability to deep underground scenarios, and is responsible for accurate positioning (effective detection distance ≥2 meters and positioning accuracy ≤3 meters in scenarios with an underground burial depth of 1-2 meters); the UHF ultra-high frequency RFID (860-960MHz) is responsible for long-distance data transmission, supporting contactless rapid inventory on the ground (≤10 meters), realizing the dual functions of "close-range accurate positioning + long-range batch inspection"; the dual-frequency modules share a unique identifier ID, and the working mode is switched through a switching control circuit, without the need for additional installation space. The epoxy resin potting layer synchronously wraps the dual-frequency antenna (multi-turn coil antenna + UHF ultra-high frequency patch antenna) to ensure consistent protection levels. At this time, the signal processing circuit is responsible for both dual-frequency signal switching and data transmission, and sensor data (if configured) can be uploaded synchronously through this circuit.

[0032] Optionally, the low-frequency RFID positioning module may include a multi-turn coil antenna, a matching circuit, and an epoxy resin potting layer. The distance between the multi-turn coil antenna and the metal part of the connector box 1 is greater than or equal to 8mm. By setting the distance between the multi-turn coil antenna and the metal part of the connector box 1 to greater than or equal to 8mm, the absorption and attenuation of the magnetic field by the metal can be reduced. The matching circuit may adopt an integrated capacitor tuning network to accurately match the antenna impedance with the input impedance of the RFID chip (typically 50Ω), reduce signal reflection, and improve energy transmission efficiency. The circuit uses SMD components soldered to an FR-4 substrate.

[0033] In some cases, if a dual-frequency RFID positioning enhancement module is used, its antenna and matching circuit can be optimized as follows: the multi-turn coil antenna and the UHF ultra-high frequency antenna are stacked and arranged to share the installation space; the UHF ultra-high frequency antenna adopts a patch design and does not occupy additional space; the matching circuit adds an ultra-high frequency tuning unit to accurately match the impedance of the dual-frequency antenna with the corresponding chip input impedance to ensure signal stability in dual-frequency mode.

[0034] The coil plane of the multi-turn coil antenna is perpendicular to the surface of the junction box 1, and the winding direction is multi-layered clockwise dense winding to ensure that the magnetic field direction is perpendicular to the surface of the junction box 1, thereby improving the signal coupling efficiency when the handheld RFID detector 18 identifies the antenna. The number of turns of the multi-turn coil antenna is 8-15 turns, and it is specifically wound with 0.3-0.5mm copper enameled copper wire (taking into account both performance stability and long-term use adaptability). The outer diameter of the coil is ≤40mm, the inner diameter is ≥20mm, and the thickness is ≤5mm, which is suitable for the narrow space inside the junction box 1 and breaks through the limitation of conventional low-frequency RFID in underground detection of only about 1 cm.

[0035] The low-frequency RFID positioning module 17 has a built-in RFID chip that stores a unique identifier ID. The unique identifier ID and signal strength information can be collected by a handheld RFID detector and located through a weighted fusion algorithm.

[0036] In some examples, if an environmental status sensing unit is configured, a miniature multi-parameter sensor unit can be added to the side of the welding plate 6, integrating a temperature and humidity sensor (measurement range: -40℃~85℃, humidity 0~100%RH), a vibration sensor (detection frequency range 10~1000Hz), and a soil moisture sensor (suitable for underground installations). Sensor data is synchronously transmitted through the signal processing circuit of the low-frequency RFID module, achieving integrated "positioning + status monitoring". When environmental parameters exceed preset thresholds (such as temperature > 60℃, vibration acceleration > 5g, soil moisture content > 80%RH), the module automatically increases the signal transmission frequency, raising the priority of detection and facilitating the management center to predict fault risks in advance. At this time, the handheld RFID detector 18 can simultaneously read the unique identifier ID, signal strength information, and environmental status parameters, and upload them to the management service center 19.

[0037] according to Figure 10As shown, the operation of the low-frequency RFID positioning module 17 in the fiber optic splice box is as follows: When the fiber optic splice box with a low-frequency RFID tag (buried at a depth of 1-2 meters) enters the signal coverage range of the handheld RFID detector 18, the low-frequency electromagnetic field generated by the handheld RFID detector 18 activates the low-frequency RFID tag. The tag sends data to the handheld RFID detector 18. The handheld RFID detector 18 (positioning accuracy ≤3M) can transmit the received data to the management service center 19 via a wired network or wireless network (such as Wi-Fi, 5G, etc.). The management service center 19 collaborates with the GIS server 22 to receive and store the data. Based on the signal strength information, it determines the geographical coordinates of the fiber optic splice box through a weighted fusion algorithm and associates the unique identifier ID, geographical coordinates, and inspection time to generate and update the asset map and inspection record. The dispatch center 21 can carry out construction operations based on the asset map, enabling operators to accurately locate the target splice box through the control terminal 20, avoiding blind digging.

[0038] In some cases, if a dual-frequency RFID positioning enhancement module and an environmental state sensing unit are used, the operation can be optimized as follows:

[0039] Precise positioning mode: The handheld RFID detector 18 switches to low frequency mode, approaches the ground to activate the module, reads the unique identifier ID, signal strength information and environmental parameters, and uploads them to the management service center 19 for positioning calculation and status judgment;

[0040] Batch inventory mode: The handheld RFID detector 18 switches to UHF ultra-high frequency mode, quickly scans multiple junction boxes at a distance (≤10 meters) on the ground, reads the unique identifier ID to complete the batch inventory, without having to approach each point individually;

[0041] The Management Service Center 19 associates unique identifiers, geographical coordinates, environmental parameters, and inspection times, and marks equipment status (such as "normal environment" or "vibration exceeding the standard") on the asset map to achieve precise management.

[0042] Optionally, combined Figure 3 As shown, multiple annular grooves are provided on the inner wall of the inlet hole 4. A sealing ring 5 is provided inside the inlet hole 4. Multiple reinforcing rings are provided on the outer side of the sealing ring 5. The multiple reinforcing rings are adapted to the multiple annular grooves. The optical fiber tube 3 passes through the sealing ring 5 and contacts the inner wall of the sealing ring 5. The sealing ring 5 reduces the friction between the optical fiber tube 3 and the junction box 1. The sealing ring 5 is made of rubber and needs to have good flexibility.

[0043] according to Figure 2 , Figure 5 and Figure 6As shown, the buffer assembly is installed on the side of the splice box 1 corresponding to the inlet hole 4, and is used to absorb the axial impact force applied to the optical fiber tube 3 from the outside, so as to protect the optical fiber connector on the splice tray 6 and the low-frequency RFID positioning module 17 from mechanical vibration or displacement. The buffer assembly includes a buffer frame 2, two buffer rollers 7, a connecting cylinder 8, two connecting pieces 9 and two buffer springs 10. The buffer frame 2 is installed on one side of the splice box 1. The two buffer rollers 7 are slidably arranged in the buffer frame 2 through corresponding connecting pieces 9 and are symmetrically distributed. The buffer rollers 7 are I-shaped and are used to limit the optical fiber tube 3. The connecting cylinder 8 is fixedly installed in the buffer frame 2 and is located between the two buffer rollers 7. The two connecting pieces 9 are respectively fixedly installed on the two buffer rollers 7, and one end of each of the two connecting pieces 9 extends outward. The connecting member 9 is T-shaped and consists of a round bar and a disc. The disc is located inside the connecting cylinder 8, and the round bar is mounted on the disc. One end of the round bar passes through the connecting cylinder 8 and is slidably connected to the connecting cylinder 8. Two buffer springs 10 are located inside the connecting cylinder 8. The ends of the two buffer springs 10 that are far apart from each other are connected to the two connecting members 9 respectively, and the ends of the two buffer springs 10 that are close to each other are connected to the connecting cylinder 8. The buffer springs 10 can provide buffering force for the movement of the buffer roller 7.

[0044] In some examples, the buffer assembly can be optimized as an adaptive sealing buffer linkage mechanism.

[0045] Specifically, based on the existing buffer components, a new pressure feedback adjustment unit is added, which may include:

[0046] A pressure sensor is installed inside the connecting cylinder 8 to monitor the internal pressure of the sealing ring 5 in real time, with a preset sealing pressure range of 0.1~0.3MPa;

[0047] A miniature electromagnetic pressure relief valve is configured on the side of the connecting cylinder 8, forming a closed-loop control with the signal processing circuit of the pressure sensor and the low-frequency RFID module.

[0048] The pressure rubber strip 16 of the buffer roller 7 adopts a memory foam composite structure, which maintains elasticity in an environment of -20℃ to 70℃, ensuring the fixation reliability under different temperature scenarios.

[0049] Its working logic is as follows: When the pressure drops due to wear of the sealing ring 5, the pressure sensor sends a signal to the signal processing circuit. The system adjusts the preload of the buffer spring 10 through the miniature electromagnetic pressure relief valve, pushing the connector 9 to move the rubber piston towards the sealing ring 5, replenishing the gas to maintain stable sealing pressure. At the same time, the pressure sensor feedback data is synchronously transmitted to the management service center 19. Combined with the pressing state of the lower pressure plate 14, the screwing stroke of the threaded rod 15 is dynamically adjusted to achieve adaptive adjustment of the fiber optic tube 3 fixation. This avoids both loose fixation causing fiber displacement and excessive tightness damaging the fiber sheath.

[0050] according to Figures 5-9 As shown, a sealing ring 5 is provided inside the inlet hole 4. The sealing ring 5 can be made of hollow material and is connected to the inner cavity of the connecting cylinder 8 through the air guide pipe 11. A rubber piston is sleeved on the connecting piece 9. The rubber piston is slidably connected to the inner wall of the connecting cylinder 8. A first one-way valve is provided on the air guide pipe 11, and a second one-way valve is provided on the connecting cylinder 8. An exhaust pipe 12 is also installed on the air guide pipe 11. A pressure valve is provided on the exhaust pipe 12. An exhaust pipe 23 is also installed on the connecting cylinder 8. The exhaust pipe 213 is correspondingly arranged with the second one-way valve. In this embodiment, the second one-way valve is closer to the connecting cylinder 8 than the pressure valve. Therefore, when the connecting member 9 moves the rubber piston away from each other, external airflow enters the connecting cylinder 8 through the second exhaust pipe 13 and the second one-way valve. When the connecting member 9 moves the rubber piston closer to each other, the airflow in the connecting cylinder 8 flows into the air guide pipe 11 and enters the sealing ring 5 through the first one-way valve. When the pressure inside the sealing ring 5 is saturated, the airflow is discharged through the first exhaust pipe 12, thus ensuring the pressure stability inside the sealing ring 5. Similarly, when the sealing ring 5 is subjected to excessive compression, the airflow will be discharged through the air guide pipe 11 and the first exhaust pipe 12, keeping the sealing ring 5 in a stable state and ensuring the sealing performance of the connecting box body 1. When the buffer roller 7 moves to both sides under external pulling force, the connecting member 9 drives the rubber piston to compress the gas inside the connecting cylinder 8. The gas enters the sealing ring 5 through the air guide pipe 11 and the first one-way valve, increasing its internal pressure and thus enhancing the radial seal of the optical fiber tube 3.

[0051] according to Figure 8 As shown, the buffer roller 7 has multiple annularly distributed pressure grooves, and each pressure groove is provided with a pressure rubber strip 16. Under normal conditions, one side of the pressure rubber strip 16 extends out of the pressure groove and contacts the optical fiber tube 3. Under the pressure of the optical fiber tube 3, the pressure rubber strip 16 retracts into the pressure groove. By setting the pressure rubber strip 16, the connection between the optical fiber tube 3 and the buffer roller 7 can be made tighter, ensuring that the optical fiber tube 3 can stably drive the buffer roller 7 to move when it is pulled.

[0052] according to Figure 8 As shown, the buffer roller 7 has a receiving groove, and a lower pressure plate 14 is provided in the receiving groove. A threaded rod 15 is rotatably installed on the buffer roller 7. The threaded rod 15 passes through the lower pressure plate 14 and is threadedly connected to the lower pressure plate 14. A sliding rod is installed on the buffer roller 7. The sliding rod passes through the lower pressure plate 14 and is slidably connected to the lower pressure plate 14. By rotating the threaded rod 15, the lower pressure plate 14 is moved, and the lower pressure plate 14 provides downward pressure to the optical fiber tube 3, so that the optical fiber tube 3 and the buffer roller 7 are in a relatively tight connection state. In this state, the optical fiber tube 3 entering the splice box 1 will not shake when connected.

[0053] according to Figure 5 As shown, the buffer frame 2 has a guide hole on its side wall for the optical fiber tube 3 to pass through, and the inner wall of the guide hole is provided with an elastic bushing; there is a gap between the side wall of the buffer frame 2 with the guide hole and the side wall of the connector box 1 with the inlet hole 4, which constitutes the working stroke space of the buffer assembly; two rubber rings are provided in the guide hole, and the rubber rings contact the outside of the optical fiber tube 3. The guide hole restricts the movable range of the optical fiber tube 3, and avoids excessive pulling force caused by excessive movable range of the optical fiber tube 3. The buffer frame 2 has an opening on the side wall with the guide hole, which is connected to the inlet hole 4.

[0054] The operation of the buffer assembly on the fiber optic splice box is as follows: During use, the fiber optic tube 3 is inserted through the guide hole of the buffer frame 2, so that the outer side of the fiber optic tube 3 contacts the buffer roller 7. Then, one end of the fiber optic tube 3 is extended into the splice box body 1 for connection. During this process, the lower pressure plate 14 can be lowered by rotating the threaded rod 15. Through the interaction between the lower pressure plate 14 and the buffer roller 7, the fiber optic tube 3 and the buffer roller 7 are in a relatively tight connection state. In this state, the fiber optic tube 3 is limited, thus facilitating the operator to connect one end of the fiber optic tube 3 located in the fiber optic splice box, ensuring the ease of use of the fiber optic splice box. During normal use of the fiber optic splice box, when the fiber optic tube 3 is pulled, the pulling force first acts on the buffer roller 7. Under the action of this pulling force… The buffer roller 7 moves and transmits the force to the buffer spring 10. The elastic deformation of the buffer spring 10 reduces the pulling force, thereby preventing the pulling force from acting directly on the connection between the splice box body 1 and the optical fiber tube 3 (i.e., the sealing ring 5), thus reducing damage to the sealing ring 5. At the same time, it protects the optical fiber connector on the fusion splice tray 6 and the low-frequency RFID positioning module 17 from mechanical vibration or displacement. During the movement of the buffer roller 7, the connecting piece 9 drives the rubber piston to compress the gas in the connecting cylinder 8. The gas enters the sealing ring 5 through the gas guide pipe 11 and the first one-way valve, increasing its internal pressure. This further ensures the tightness of the connection between the sealing ring 5, the optical fiber tube 3, and the splice box body 1, thereby ensuring the sealing effect of the optical fiber splice box and extending its service life.

[0055] In some cases, if an adaptive sealing buffer linkage mechanism is used, the operation can be supplemented as follows: During normal use of the fiber optic splice box, the pressure sensor monitors the internal pressure of the sealing ring 5 in real time. When the internal pressure is lower than 0.1MPa, the pressure replenishment process is automatically initiated: the miniature electromagnetic pressure relief valve closes, the buffer spring 10 pushes the connector 9 to move the rubber piston, replenishing gas to the sealing ring 5 until the internal pressure reaches 0.2MPa (preset intermediate value); when the internal pressure is higher than 0.3MPa, the miniature electromagnetic pressure relief valve opens to release excess gas, ensuring that the sealing pressure is stable within the preset range, further improving sealing reliability and service life.

[0056] Example 2

[0057] This embodiment provides an application system based on a fiber optic splice box, including:

[0058] At least one fiber optic splice box with positioning function as described in Embodiment 1;

[0059] The handheld RFID detector 18 can operate in the 134KHz low-frequency band. When it approaches the fiber optic junction box during inspection, it generates a low-frequency electromagnetic field to passively activate the low-frequency RFID positioning module 17 and read the unique identifier ID and signal strength information of the low-frequency RFID positioning module 17. For example, in a scenario with an underground burial depth of 1-2 meters, the effective detection distance is ≥2 meters and the positioning accuracy is ≤3 meters.

[0060] The GIS server 22 is communicatively connected to the management service center 19, which is also communicatively connected to the handheld RFID detector 18. The management service center 19 is used to: receive and store data from the handheld RFID detector 18; determine the geographical coordinates of each fiber optic junction box using a weighted fusion algorithm based on the signal strength information; associate the unique identifier ID, geographical coordinates, and inspection time; and generate and update a visualized asset map and inspection records using GIS technology, thereby achieving lean, intelligent, and information-based management of underground pipelines.

[0061] In some examples, if the fiber optic splice box adopts a dual-frequency RFID positioning enhancement module and an environmental status sensing unit, the application system can be optimized as follows: the handheld RFID detector 18 can support switching between a 134KHz low-frequency mode and an 860-960MHz UHF ultra-high-frequency mode. The low-frequency mode is used for precise positioning and environmental parameter reading, while the ultra-high-frequency mode is used for long-distance batch inventory. The management service center 19 adds an environmental parameter processing module to receive, store, and analyze sensor data. Combined with geographical coordinates and inspection time, it generates an integrated asset map and inspection record of "positioning + status". The asset map can add an environmental status filtering function, supporting the filtering of equipment by "normal" and "abnormal". Abnormal equipment is highlighted in red to facilitate quick location of fault risk points.

[0062] Specifically, the handheld RFID detector 18 can generate a low-frequency electromagnetic field (operating frequency band 134KHz). When the handheld RFID detector 18 is close to the ground, the electromagnetic field it generates can penetrate the soil, providing passive power activation for the low-frequency RFID positioning module 17 inside the fiber optic junction box 1-2 meters underground. The activated low-frequency RFID positioning module 17, through its built-in copper multi-turn coil antenna, backscatters the pre-stored unique identifier ID and the current feedback signal strength information back to the handheld RFID detector 18. The handheld RFID detector 18 (positioning accuracy ≤3M) can demodulate and record the identifier ID and the corresponding signal strength information.

[0063] In some cases, if a dual-frequency mode and an environmental sensing unit are used, the above process can be optimized as follows:

[0064] Low-frequency mode: The handheld RFID detector 18 generates a low-frequency electromagnetic field. After activating the module, it synchronously reads the unique identifier ID, signal strength information, and environmental parameters such as temperature, humidity, vibration, and soil moisture content.

[0065] UHF mode: The handheld RFID detector 18 switches to UHF mode and scans from a distance on the ground to read the unique ID of multiple junction boxes at one time, completing batch inventory without the need to collect signal strength and environmental parameters;

[0066] Data from both modes is uploaded to the management service center 19 via the network, and is used for location calculation / status analysis and batch inventory statistics, respectively.

[0067] Specifically, the management service center 19 can initiate a weighted fusion algorithm for location calculation. As can be understood, a weighted fusion algorithm is a data processing method whose core idea is to assign different weights to multiple signal strength data points collected from different locations for the same RFID tag, based on their reliability or importance, and then perform comprehensive calculations. The GIS server 22, in collaboration with the management service center 19, can use multiple signal strength values ​​of the same connector box identifier ID read by inspection personnel at different locations as input. The algorithm can, based on the model relationship between signal strength and distance, and considering the weight allocation of factors such as soil environment and burial depth, iteratively optimize the calculation to ultimately estimate the most likely geographical location coordinates (e.g., latitude and longitude) of the fiber optic connector box.

[0068] In some cases, if an environmental state perception unit is configured, the weighted fusion algorithm can incorporate soil moisture sensor data when calculating weights. The higher the soil moisture content, the greater the signal attenuation may be. The algorithm automatically adjusts the signal strength weight of that location point to improve positioning accuracy. At the same time, combined with vibration sensor data, if the vibration acceleration at a certain location point exceeds the standard, the algorithm marks the data as an "abnormal reference" and reduces its weight ratio to avoid positioning deviations caused by external force disturbances.

[0069] Specifically, after completing the calculation of geographic coordinates, the management service center 19 can perform data association and visualization management tasks. The management service center 19 can bind the calculated geographic coordinates with the corresponding unique identifier ID and the inspection time of the data collection, forming a complete asset status record and storing it in the database. Based on this, the GIS server 22 can call the map engine service to visualize and render the identifier ID icon of each junction box on its corresponding geographic coordinates, thereby generating and updating a dynamic asset map reflecting the distribution of all junction boxes and the latest inspection status. Simultaneously, all read events and location information can be automatically categorized into inspection records for traceability and auditing, realizing the informatization and visualization management of underground pipelines (compatible with detector-side APP, WeChat mini-program, and computer management system, supporting data upload and visualization query).

[0070] In some examples, if an environmental status sensing unit is configured, the management service center 19 can bind geographical coordinates, unique identifier ID, environmental parameters, and inspection time to form a "four-dimensional" asset status record, which is stored in the database; the GIS server 22 marks environmental status labels (such as "temperature 25℃, humidity 60%RH" and "vibration exceeding the standard") on map points, and supports clicking to view detailed parameters; an "abnormal equipment" layer is added to the asset map, which automatically filters equipment with excessive environmental parameters and displays them centrally for quick handling; an environmental status field is added to the inspection record to record the parameter data of each inspection, forming a traceable status change ledger.

[0071] For example, a staff member carrying a handheld RFID detector enters an area with multiple fiber optic splice boxes as described in this application for inspection. When approaching splice box A, the handheld RFID detector 18 can read its identifier ID "FBOXA-001" and signal strength value a. After moving to another location, "FBOXA-001" and signal strength value b are read again. After receiving these two sets of data including timestamps, the management service center 19 combines them with the geographic information data of the GIS server 22 and processes the signal strength values ​​a and b using a weighted fusion algorithm to estimate the geographic coordinates (Xa, Ya) of splice box A. Subsequently, the management service center 19 can associate the identifier ID "FBOXA-001", coordinates (Xa, Ya), and the most recent inspection time T2, and the GIS server 22 updates or displays an icon representing "FBOXA-001" at coordinates (Xa, Ya) on the asset map interface. Repeating this process for all junction boxes within the area can create a complete network asset map, which staff can view via control terminal 20 to accurately locate target junction boxes.

[0072] In some cases, if a dual-frequency mode and an environmental sensing unit are used, the above example can be:

[0073] Staff members entered the inspection area carrying handheld RFID detectors that support dual-frequency mode.

[0074] Batch inventory phase: Switch to UHF mode, quickly scan the ground, read the identification IDs of 10 junction boxes such as "FBOXA-001" and "FBOXA-002", confirm that all equipment is within the valid range, and complete the inventory;

[0075] Precision inspection phase: Switch to low frequency mode, approach junction box A, and read the identification ID "FBOXA-001", signal strength value a, and environmental parameters (temperature 30℃, humidity 55%RH, vibration acceleration 2g); after moving to another location, read the signal strength value b.

[0076] After receiving the data, the management service center 19 adjusts the weights based on the soil moisture content (50%), estimates the geographic coordinates (Xa, Ya) through a weighted fusion algorithm, and binds the ID, coordinates, environmental parameters, and inspection time T2.

[0077] The GIS server 22 marks the “FBOXA-001” icon and the “Environment Normal” label at the map (Xa,Ya) to form a complete “location + status” asset map.

[0078] Optionally, in some embodiments, the management service center 19 is further configured to: analyze the coordinate drift trend of the fiber optic splice box based on multiple geographical coordinates of the same fiber optic splice box obtained from multiple inspections; and generate and output an abnormal anchoring status warning for the fiber optic splice box when the coordinate drift trend exceeds a preset stability threshold.

[0079] In some cases, if an environmental status sensing unit is configured, the management service center 19 combines the geographical coordinates of multiple inspections with vibration sensor data to analyze the coordinate drift trend: if the drift trend is a continuous directional shift and the vibration acceleration exceeds the standard (>5g) within a certain period of time, it is determined to be anchor loosening caused by external disturbance, and the warning information is marked "external disturbance risk"; if the drift trend is a slow random shift and the soil moisture content exceeds the standard (>80%RH) for a long time, it is determined to be a position change caused by soil settlement, and the warning information is marked "soil settlement risk"; the warning information is synchronously linked to environmental parameter data, which makes it easier for maintenance personnel to accurately determine the cause of the fault.

[0080] Specifically, the management service center 19 can receive and store multiple geographic coordinates and corresponding inspection times for the same fiber optic splice box from multiple inspections. The platform can perform statistical analysis on these time-series geographic coordinates, such as calculating the distribution center and dispersion of the coordinate points, or fitting their trajectory over time, thereby analyzing the coordinate drift trend of the fiber optic splice box (i.e., the pattern and magnitude of position change over time). The management service center 19 can compare the analyzed coordinate drift trend with a preset stability threshold. When the analysis results indicate that the coordinate drift trend exceeds the stability threshold, the management service center 19 can determine that the physical fixation status of the fiber optic splice box may be abnormal, and automatically generate and output an early warning message indicating an abnormal anchoring status for that specific splice box, reminding staff to conduct on-site inspections.

[0081] For example, during three inspections at different times, the management service center used a handheld RFID detector 18 to detect the fiber optic splice box Alpha, which was buried at a depth of 1.5 meters, and successively obtained three geographical coordinates of the fiber optic splice box: location A, location B, and location C. The platform, combined with the geospatial data analysis function of the GIS server, performed trajectory fitting and dispersion calculation on these three coordinate points. It was found that they were not randomly scattered, but rather exhibited a continuous directional offset trend from location A to location C, and the overall offset exceeded the system's preset allowable normal fluctuation range (i.e., stability threshold). Based on this analysis, the management service center 19 could determine that the fiber optic splice box Alpha was likely to have experienced unexpected movement or loosening, and immediately generated a warning message stating "Fiber optic splice box Alpha anchorage status abnormal, on-site inspection recommended, avoid blind digging," and output this warning to the system interface, the detector's APP, and the maintenance personnel's mobile app.

[0082] In some examples, if an environmental state perception unit is configured, the above example can be optimized as follows: During three inspections at different times, the management service center used a handheld RFID detector 18 to detect the fiber optic splice box Alpha, which is buried at a depth of 1.5 meters. Three geographical coordinates (location A, location B, and location C) and corresponding environmental parameters were obtained sequentially: During the second inspection, the vibration acceleration reached 6g (exceeding the standard), and the soil moisture content was 55% (normal). The platform, combined with the geospatial data analysis function of the GIS server, performed trajectory fitting on the three coordinate points and found a continuous directional shift trend, with the shift exceeding the stability threshold. Based on this analysis, the management service center 19 determined that the anchoring of the fiber optic splice box Alpha was loose due to external disturbance. It then generated a warning message stating, "Fiber optic splice box Alpha anchoring status is abnormal (risk of external disturbance), vibration parameters have exceeded the standard, it is recommended to conduct precise on-site verification and avoid blind excavation." The warning was simultaneously output to the system interface, the detector's APP, and the maintenance personnel's mobile app, along with screenshots of historical vibration data for reference.

[0083] Optionally, in some embodiments, when the management service center 19 generates and updates asset maps and inspection records using GIS technology, it specifically performs the following operations:

[0084] The unique identifier ID is bound to the fiber optic line code, pipeline routing information, and burial depth parameters of the corresponding fiber optic splice box, and a spatial topological association between the unique identifier ID and the fiber optic line direction is established in the GIS electronic map.

[0085] The geographical coordinates are mapped to spatial points on a GIS electronic map, and the unique identifier ID, burial depth parameters and installation time of the corresponding fiber optic splice box are marked at the points.

[0086] The inspection time is bound to the status information of the corresponding spatial point to generate the inspection trajectory layer of the inspection personnel, and the connection box points that have not been inspected overdue are marked in the asset map.

[0087] For example, the update triggering rules for asset maps and inspection records are as follows: when new inspection data is received, the latest geographical coordinates are automatically overwritten with the historical coordinates, the status labels of the inspection records are updated synchronously, and the historical data is archived to the database for traceability.

[0088] In some cases, if an environmental state awareness unit is configured, the above operation can be optimized as follows:

[0089] (1) Bind the unique identifier ID with the fiber optic line code, pipeline routing information, burial depth parameters, and environmental parameter thresholds of the corresponding fiber optic splice box, and establish a spatial topological association between the unique identifier ID and the fiber optic line direction in the GIS electronic map.

[0090] (2) Map the geographic coordinates to spatial points on the GIS electronic map, and mark the unique ID, burial depth parameters, installation time and real-time environmental status (such as "normal temperature and humidity" and "excessive vibration") of the corresponding fiber optic splice box at the point. Click to view parameter details and historical change curves.

[0091] (3) Bind the inspection time with the status information and environmental parameters of the corresponding spatial points to generate the inspection trajectory layer of the inspection personnel, and mark the connection box points that have not been inspected for a long time or have abnormal environmental parameters in different styles in the asset map (overdue inspection: yellow flashing; abnormal environment: red highlighting).

[0092] (4) The update triggering rules for asset maps and inspection records are as follows: when new inspection data is received, the latest geographical coordinates are automatically overwritten with the historical coordinates, the status labels and environmental parameter records of the inspection records are updated synchronously, the historical data (including old coordinates and old parameters) are archived to the database for traceability, and the parameter change trend is recorded to facilitate fault prediction.

[0093] Specifically, when processing data using GIS technology, the management service center can match and bind the received unique identifier ID with the corresponding entry in the database. Spatial topology association refers to a data model in GIS that describes the spatial relationships such as connections and adjacencies between geographic objects (e.g., points and lines). The management service center can call the spatial analysis functions of GIS to perform connection calculations between the points representing junction boxes and the line layers representing the fiber optic line routes, thereby establishing the logical and spatial relationship of "junction boxes located on a specific line" in the GIS electronic map, forming a networked asset management foundation.

[0094] Furthermore, the management service center can accurately map the geographic coordinates (usually latitude and longitude) obtained through a weighted fusion algorithm onto the corresponding spatial location on the GIS electronic map through coordinate transformation and projection, forming a spatial point representing the junction box. The management service center can call the map annotation interface to associate and display the bound attribute information of this point, such as displaying the unique identifier ID, burial depth parameters, and installation time of the point in the form of an information window or label, making each point on the map an information-rich and interactive asset object.

[0095] In some examples, if an environmental status awareness unit is configured, the management service center can additionally associate environmental status labels with map points and automatically determine the status based on preset thresholds, such as:

[0096] All parameters are within the threshold range: marked "Normal Environment", icon is green;

[0097] If any parameter exceeds the standard: mark it as "Abnormal Environment", the icon will be red, and the parameter exceeding the standard will be listed in the information window (e.g., "Vibration Acceleration: 6g > 5g").

[0098] It supports viewing environmental parameter change curves by time dimension, and through the time axis function of GIS map, it allows you to trace back the parameter status at different inspection times and analyze the change trend.

[0099] The management service center can use the inspection time of each patrol as a key attribute and bind it to the corresponding junction box location. By connecting multiple locations read by the same inspector in a time sequence, the management service center can generate a continuous inspection trajectory layer and overlay it on the asset map. Simultaneously, the management service center can set inspection cycle rules to automatically filter out junction box locations that have not been inspected due by comparing the current time with the latest inspection time of each location. The management service center can configure different display styles for these locations (such as flashing, highlighting, or changing icon color) to create prominent markers on the asset map, achieving visual early warning.

[0100] The updating of asset maps and inspection records can be set to be event-triggered. When the management service center receives new inspection data, the update process can be automatically initiated. For the same junction box, the management service center can overwrite the original historical coordinates on the map with the latest calculated geographic coordinates, realizing dynamic position correction. At the same time, the management service center can synchronously update the status label of the junction box in the inspection record (such as "inspected"), and archive the overwritten old coordinates and associated old records to the historical database, forming a complete and traceable data chain.

[0101] For example, the management service center receives new inspection data, including the identifier ID of the junction box "FBOXA-001", its latest coordinates (Xa, Ya), and inspection time T2. The system first binds the ID "FBOXA-001" with information such as "Main Line-A" and "Depth 1.5 meters" in the asset database, and establishes a topological connection between this point and the "Main Line-A" route in the GIS map. Then, it maps the coordinates (Xa, Ya) to the corresponding location on the map and marks the point as "ID:FBOXA-001, Depth: 1.5 meters". Next, it binds the time T2 to this point, marking it as "inspected". If the last inspection time T1 for this point has exceeded a preset period, its original "overdue" warning style is cleared. Finally, the old coordinates are replaced with the new coordinates (Xa, Ya), and the record containing the old coordinates and time T1 is transferred to the historical database. Repeating this process for multiple junction boxes can generate an updated network asset map and inspection status view.

[0102] In some cases, if an environment state awareness unit is configured, the above example can be optimized as follows:

[0103] The management service center received new inspection data, including the identification ID of the junction box "FBOXA-001", the latest coordinates (Xa, Ya), environmental parameters (temperature 30℃, humidity 55%RH, vibration acceleration 2g), and inspection time T2. The system performs the following operations:

[0104] Bind the ID “FBOXA-001” to information such as “Main Line-A”, “Buried Depth 1.5 meters”, “Temperature Threshold ≤ 60℃” and “Vibration Threshold ≤ 5g” in the asset database to establish a topological connection between this point and the “Main Line-A” route line;

[0105] Map the coordinates (Xa, Ya) to the corresponding location on the map and label it "ID:FBOXA-001, burial depth: 1.5 meters, environment: normal". The information window displays detailed parameters and variation curves.

[0106] Bind time T2 to this location, mark it as "inspected", and clear the original "overdue" warning style (if any);

[0107] Replace the old coordinates with the new coordinates (Xa,Ya), and transfer the records of the old coordinates, old environmental parameters (such as the previous temperature of 28℃) and time T1 into the historical database.

[0108] Analyzing the trend of environmental parameters: the temperature is stable at 28-30℃, and the vibration acceleration has decreased from 3g to 2g, indicating a stable condition. It is marked as "good condition" in the inspection record.

[0109] The scope of this application is defined by the appended claims rather than the foregoing description, and is therefore intended to encompass all variations falling within the meaning and scope of equivalents of the claims. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices recited in a device claim may also be implemented by a single unit or device in software or hardware. Terms such as "first," "second," etc., are used only for distinguishing descriptions and do not indicate any particular order, nor should they be construed as indicating or implying relative importance.

[0110] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fiber optic splice box with positioning function, characterized in that: Includes a connector box body (1), a buffer assembly, and a low-frequency RFID positioning module (17). The junction box body (1) is composed of a bottom box frame (101) and a top box cover (102). The top box cover (102) is installed on the top of the bottom box frame (101) by bolts. The junction box body (1) has inlet holes (4) on both sides. The inlet holes (4) are used to introduce external optical fiber tubes (3) into the junction box body (1). A welding tray (6) is provided on the bottom box frame (101). The low-frequency RFID positioning module (17) is located on the top of the welding tray (6) and is used to position the welding box body (1). The buffer assembly is installed on the side of the splice box (1) corresponding to the inlet hole (4) to absorb the axial impact force applied to the optical fiber tube (3) from the outside, so as to protect the optical fiber connector on the splice plate (6) and the low frequency RFID positioning module (17) from mechanical vibration or displacement.

2. The fiber optic splice box with positioning function according to claim 1, characterized in that: The low-frequency RFID positioning module (17) includes a multi-turn coil antenna, a matching circuit and an epoxy resin potting layer. The distance between the multi-turn coil antenna and the metal parts of the junction box (1) is greater than or equal to 8mm.

3. The fiber optic splice box with positioning function according to claim 2, characterized in that: The coil plane of the multi-turn coil antenna is perpendicular to the surface of the junction box (1), the winding direction is clockwise and the number of turns is 8-15, and the outer diameter is less than or equal to 40mm; The multi-turn coil antenna is a radially multi-layer densely wound structure; when the low-frequency RFID positioning module (17) is used in conjunction with the matching low-frequency RFID reader, the effective identification distance in the air is greater than 2 meters.

4. The fiber optic splice box with positioning function according to claim 1, characterized in that: The low-frequency RFID positioning module (17) has a built-in RFID chip with a unique identifier ID. The unique identifier ID and signal strength information can be collected by the reader and positioned by a weighted fusion algorithm.

5. The fiber optic splice box with positioning function according to claim 1, characterized in that: The buffer assembly includes a buffer frame (2), two buffer rollers (7), a connecting cylinder (8), two connecting pieces (9), and two buffer springs (10). The buffer frame (2) is installed on one side of the connector box body (1); The two buffer rollers (7) are slidably disposed within the buffer frame (2) via corresponding connectors (9) and are symmetrically distributed. The connecting cylinder (8) is fixedly installed inside the buffer frame (2) and located between the two buffer rollers (7); The two connecting pieces (9) are respectively fixedly installed on the two buffer rollers (7), and one end of each of the two connecting pieces (9) extends into the connecting cylinder (8) and can slide along the connecting cylinder (8); Two buffer springs (10) are set inside the connecting cylinder (8). The ends of the two buffer springs (10) that are far apart from each other are connected to two connecting pieces (9) respectively, and the ends of the two buffer springs (10) that are close to each other are connected to the connecting cylinder (8). The buffer springs (10) provide buffering force for the movement of the buffer roller (7).

6. The fiber optic splice box with positioning function according to claim 5, characterized in that: The buffer roller (7) has multiple pressure grooves arranged in a ring. Each pressure groove is provided with a pressure rubber strip (16). Under normal conditions, one side of the pressure rubber strip (16) extends out of the pressure groove. The pressure rubber strip (16) contacts the optical fiber tube (3). Under the pressure of the optical fiber tube (3), the pressure rubber strip (16) contracts into the pressure groove.

7. A fiber optic splice box with positioning function according to claim 5, characterized in that: The buffer roller (7) has a storage groove, and a lower pressure plate (14) is provided in the storage groove. A threaded rod (15) is rotatably installed on the buffer roller (7). The threaded rod (15) passes through the lower pressure plate (14) and is threadedly connected to the lower pressure plate (14). A sliding rod is installed on the buffer roller (7). The sliding rod passes through the lower pressure plate (14) and is slidably connected to the lower pressure plate (14). By rotating the threaded rod (15), the lower pressure plate (14) is moved. The lower pressure plate (14) provides a downward pressure to the optical fiber tube (3), so that the optical fiber tube (3) and the buffer roller (7) are in a relatively tight connection state. In this state, the optical fiber tube (3) entering the splice box (1) will not shake when it is connected.

8. A fiber optic splice box with positioning function according to claim 6, characterized in that: The buffer frame (2) has a guide hole on its side wall for the optical fiber tube (3) to pass through, and the inner wall of the guide hole is provided with an elastic bushing; there is a gap between the side wall of the buffer frame (2) with the guide hole and the side wall of the connector box (1) with the inlet hole (4), which constitutes the working stroke space of the buffer assembly.

9. A fiber optic splice box with positioning function according to claim 5, characterized in that: A sealing ring (5) is provided inside the inlet hole (4). The sealing ring (5) is made of hollow material and is connected to the inner cavity of the connecting cylinder (8) through the air guide pipe (11). A rubber piston is fitted on the connector (9), and the rubber piston is slidably connected to the inner wall of the connecting cylinder (8); The gas guide pipe (11) is provided with a first check valve, and the connecting cylinder (8) is provided with a second check valve; When the buffer roller (7) moves to both sides under the action of external pulling force, the rubber piston is driven by the connector (9) to compress the gas in the connecting cylinder (8). The gas enters the sealing ring (5) through the gas guide pipe (11) and the first one-way valve, which increases its internal pressure and thus enhances the radial seal of the optical fiber tube (3).

10. An application system based on an optical fiber splice box, characterized in that: include: At least one fiber optic splice box with positioning function as described in any one of claims 1-9; A handheld RFID detector (18) is used to approach the fiber optic splice box during inspection, generate a low-frequency electromagnetic field to passively activate the low-frequency RFID positioning module (17), and read the unique identifier ID and signal strength information of the low-frequency RFID positioning module (17). The management service center (19) is communicatively connected to the handheld RFID detector and is used for: Receive and store data from the handheld RFID detector (18); Based on the signal strength information, the geographical coordinates of each fiber optic splice box are determined using a weighted fusion algorithm; The unique identifier ID, geographical coordinates, and inspection time are associated, and asset maps and inspection records are generated and updated using GIS technology.

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