An adjustable pitch multi-satellite disc sensing optical fiber and cabling system and method

Abstract

This invention relates to the field of special optical fiber processing and sensing optical cable fabrication technology, specifically to an adjustable pitch multi-satellite disk sensing optical fiber cabling system and method. The system includes a central fiber release assembly, satellite release assemblies, a revolution winding assembly, a coating assembly, a pressure adhesive supply assembly, a UV curing assembly, a length counting assembly, a winding assembly, and a controller. The central fiber and several outer fibers converge in the coating assembly and are coated with UV-curable adhesive. The outer fibers are spirally wound around the central fiber by the satellite release assembly along with the revolution winding assembly, forming a special sensing optical cable after curing. The controller determines the revolution speed n=60v / p based on the set pitch p and the central fiber linear velocity v, achieving controllable linkage between pitch and speed. This system is suitable for the fabrication of shape sensing optical cables, temperature-strain synchronous measurement optical cables, heterogeneous fiber integration, and distributed / composite sensing optical cables, and has advantages such as compact structure, adjustable pitch, and high cable consistency.

Description

Technical Field

[0001] This invention relates to the field of special optical fiber processing and sensing cable fabrication technology, specifically to an adjustable pitch multi-satellite disk sensing optical fiber cabling system and cabling method. Background Technology

[0002] Specialty optical cables such as shape sensors, temperature-strain synchronous measurement sensing cables, heterogeneous fiber integrated cables, and distributed sensing cables have wide applications in pipeline health monitoring, structural safety monitoring, and flexible measurement in medical / robotics fields. The fabrication process of existing specialty sensing cables typically requires the stable integration of multiple optical fibers according to specific geometric relationships (e.g., helical winding, parallel array, heterogeneous combination), and consistent control of key process parameters such as pitch, tension, adhesive layer thickness, and curing quality to ensure the stability of the cable structure and the repeatability of sensing performance.

[0003] However, existing equipment is mostly geared towards conventional optical cable cabling or coating and curing of single / small quantities of fibers. It lacks a dedicated integrated device and supporting control scheme for "controllable pitch spiral winding of multiple special optical fibers around a central fiber, followed by online coating and curing into a cable." Especially in achieving equiangular distribution of multiple outer fibers, adjustable and stable pitch, continuous and stable adhesive supply and UV curing processes, and low bending stress winding, existing technologies struggle to balance structural compactness with engineering consistency requirements. This leads to problems such as uneven outer fiber distribution, pitch fluctuations, uneven adhesive layer or insufficient curing, and poor straightness after winding during cabling, making it difficult to meet the engineering requirements for high-consistency special sensing optical cables.

[0004] Therefore, it is necessary to provide a winding cabling system that is compact in structure, has controllable parameters, can realize the spiral winding of multiple special optical fibers and online coating and UV curing into cables, and supports the integration of multiple external fiber arrays and heterogeneous optical fibers, so as to improve the consistency, stability and scalability of special sensing optical cable manufacturing. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an adjustable pitch multi-satellite disk sensing optical fiber cabling system and method. This invention is used for applications such as shape sensor fabrication, temperature-strain synchronous measurement sensing optical cable fabrication, and heterogeneous fiber integration, and can be extended to the engineering fabrication of distributed / composite sensing optical cables.

[0006] The technical solution of this invention is: an adjustable pitch multi-satellite disk sensing optical fiber and ribbon cabling system, comprising a central fiber delivery assembly for delivering a central optical fiber; characterized in that: the satellite delivery assembly delivers N outer optical fibers, N being greater than or equal to 1; the N delivery disks are equally spaced along angle A within a cross-section coaxial with the central optical fiber, where A = 360° / N; a revolution winding assembly for driving the satellite delivery assembly to rotate around the axis of the central optical fiber, causing the outer optical fibers to be spirally wound around the outer circumference of the central optical fiber; a coating assembly, having an inlet channel and an outlet channel, for coating the outer surface of the convergence structure with UV-curable adhesive after the central optical fiber and the outer optical fibers converge in the inlet channel and outputting it from the outlet channel; and a pressure adhesive supply assembly. A device is connected to the coating assembly and is used to provide the UV-curing adhesive to the coating assembly; the UV-curing assembly is provided with a curing channel for UV curing the spiral winding structure after coating with the UV-curing adhesive, and outputting the cured sensing optical cable; a length counting assembly is disposed between the UV-curing assembly and the winding assembly for measuring the length of the sensing optical cable; the winding assembly is used to collect the cured sensing optical cable; a controller is electrically connected to the revolution winding assembly, the central fiber traction / winding drive and the UV-curing assembly, and is used to control the rotational speed n of the revolution winding assembly according to the set pitch parameter p and the central fiber linear speed v, so that n satisfies: n=60v / p; the pitch p of all outer fiber windings is the same.

[0007] According to the adjustable pitch multi-satellite disk sensing fiber optic cable system described above, the characteristic is that: the controller calculates the fiber release speed of the outer fiber based on the winding radius R and the pitch p. ,satisfy:

[0008]

[0009] R is the radial distance from the centerline of the outer fiber to the axis of the central fiber.

[0010] According to the adjustable pitch multi-satellite disk sensing optical fiber and ribbon cabling system described above, the satellite cable laying assembly includes three satellite cable laying disks, which are equally spaced at 120° angles within a cross section coaxial with the central optical fiber.

[0011] According to the adjustable pitch multi-satellite disk sensing optical fiber and ribbon cabling system described above, the feature is that the number of satellite cable laying components is 1 to 3, and the configuration is "1 outer optical fiber + 1 central optical fiber", "2 outer optical fibers + 1 central optical fiber", or "3 outer optical fibers + 1 central optical fiber" depending on the target optical cable structure.

[0012] According to the adjustable pitch multi-satellite disk sensing fiber optic cable system described above, the system is characterized in that: the pressurized adhesive supply assembly includes an adhesive storage container and an inert gas pressurization unit, wherein the inert gas pressurization unit introduces inert gas into the adhesive storage container to pressurize the UV-curable adhesive to the coating assembly.

[0013] According to the adjustable pitch multi-satellite disk sensing fiber optic cable system described above, the inert gas is nitrogen and / or argon.

[0014] According to the adjustable pitch multi-satellite disk sensing fiber optic cable system described above, the coating component is a coating die or a coating mold, the fiber inlet channel includes a central hole for the central fiber and an outer hole for the outer fiber, and the fiber outlet channel is a single-hole fiber outlet channel after convergence.

[0015] According to the above-described adjustable pitch multi-satellite disk sensing fiber optic cable system, the ultraviolet curing component includes a curing lamp and a curing cavity, the curing channel passes through the curing cavity, and the power of the curing lamp is adjustable and / or the irradiation time is adjustable.

[0016] According to the adjustable pitch multi-satellite disk sensing optical fiber and ribbon cabling system described above, the length counting component includes a length counting wheel that rolls in contact with the sensing optical cable and an encoder connected to the length counting wheel, wherein the encoder outputs a length measurement signal.

[0017] According to the adjustable pitch multi-satellite disk sensing fiber optic cable system described above, the characteristic is that the winding assembly includes a winding wheel, the diameter of which is greater than a preset threshold.

[0018] This invention also discloses a method for cabling a sensing fiber optic array, comprising one central fiber and at least one outer fiber, characterized by the following steps:

[0019] S1 releases the central optical fiber and pulls it at the speed v of the central optical fiber;

[0020] S2 releases several external optical fibers, causing the external optical fibers to rotate around the central optical fiber with the revolution winding assembly and form a spiral winding with a set pitch p; the rotation speed n of the revolution winding assembly is set according to n=60v / p or adjusted in a closed loop, where v is the linear velocity of the central optical fiber.

[0021] S3 allows the central optical fiber and the outer optical fiber to enter the coating assembly for convergence and coating with UV-curable adhesive;

[0022] S4 allows the coated winding structure to enter the UV curing assembly for curing into a cable;

[0023] S5 measures the length of the optical cable by a length measuring component and then winds it up by a winding component; the length signal and / or tension sensing signal output by the length measuring component are used to perform closed-loop correction on the speed v of the central optical fiber and the revolution speed n.

[0024] According to the above-described method for cabling a sensing fiber array, the characteristic is that: in step S2, the outer fiber laying line speed... v is the linear velocity of the central fiber, and R is the radial distance from the centerline of the outer fiber to the axis of the central fiber.

[0025] Compared with existing technologies, this invention has at least the following advantages: It achieves a stable helical distribution of the outer optical fiber relative to the central optical fiber through multi-satellite disk revolution winding, supporting 1-3 outer optical fiber array configurations and heterogeneous fiber integration; through pitch-speed linkage control and optional closed-loop correction, the pitch can be precisely set and stably maintained, improving cable consistency; through pressure-assisted glue supply and coating components, it achieves stable glue supply and uniform glue layer, and with adjustable power UV curing components, it improves curing reliability; through length measuring components, it achieves length measurement and process monitoring, and uses large-diameter winding to reduce bending stress and improve straightness after winding; it is suitable for the preparation of various special optical cables such as shape sensing, temperature-strain synchronous measurement, distributed sensing, and composite / redundant sensing, with a wide range of applications. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the system structure of the present invention;

[0027] Figure 2 A schematic diagram illustrating the equiangular distribution and revolution-winding principle of multiple satellite disks within a cross section;

[0028] Figure 3 This is a schematic diagram of the coating and UV curing cable-making process of the present invention;

[0029] Figure 4 This is a schematic diagram of a cable-making structure of the present invention (e.g., 3 outer optical fibers + 1 central optical fiber).

[0030] Figure 5 This is a schematic diagram of another cable-forming structure of the present invention (e.g., 1 outer optical fiber + 1 central optical fiber).

[0031] Explanation of reference numerals in the attached drawings: 1. Central fiber feeding assembly; 2. Satellite feeding assembly; 3. Revolution winding assembly; 4. Coating assembly; 5. Pressurized adhesive supply assembly; 6. UV curing assembly; 7. Length counting assembly; 8. Rewinding assembly; 9. Controller; 11. Central optical fiber; 21. First fiber feeding roller; 22. Second fiber feeding roller; 23. Third fiber feeding roller; 51. Inert gas; 52. Adhesive storage container; 53. UV curing adhesive; 61. Curing channel; 62. UV curing lamp; 211. First outer optical fiber; 221. Second outer optical fiber; 231. Third outer optical fiber.

[0032] Explanation of the name:

[0033] Pitch: The axial distance that an optical fiber travels when it completes a full turn (360°) of spiral winding along the central fiber axis. Detailed Implementation

[0034] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0035] like Figure 1 As shown, the present invention discloses an adjustable pitch multi-satellite disk special sensing fiber array winding and UV curing cabling system, comprising: a central fiber delivery assembly 1 for delivering a central fiber 11; a satellite delivery assembly 2 for delivering a plurality of outer fibers (N outer fibers, N greater than or equal to 1); a revolution winding assembly 3 for driving the satellite delivery assembly 2 to rotate around the axis of the central fiber 11, so that the outer fibers are wound helically around the outer circumference of the central fiber 11; a coating assembly 4, having an inlet channel and an outlet channel, for coating the outer surface of the convergence structure with UV-curable adhesive after the central fiber 11 and the outer fibers converge in the inlet channel and outputting it from the outlet channel; and a pressure-pressurized adhesive supply assembly 5, connected to the coating assembly 4, for supplying adhesive to the coating assembly 4. Component 4 provides the UV-curable adhesive; UV-curing component 6, equipped with a curing channel, is used to UV-cur the spiral winding structure coated with the UV-curable adhesive, outputting a cured special sensing optical cable; length counting component 7, located between the UV-curing component 6 and the winding component 8, is used to measure the length of the special sensing optical cable; winding component 8 is used to collect the cured special sensing optical cable; controller 9, electrically connected to the revolution winding component 3, the traction / winding drive of the central optical fiber 11, and the UV-curing component 6, is used to control the rotational speed n of the revolution winding component 3 according to the set pitch parameter p and the linear speed parameter v of the central optical fiber 11, so that n satisfies: n = 60v / p, where n is revolutions per minute, v is meters per second, and p is meters per revolution. When multiple satellite cable reels are used, the pitch p of all outer optical fibers is the same. This invention can adjust the pitch p of different outer optical fibers by varying the rotational speed n and the linear speed parameter v of the central optical fiber 11, thereby facilitating the production of various types of optical cables.

[0036] like Figure 2 As shown, the satellite cable laying assembly 2 of the present invention includes three satellite cable laying reels, which are equally spaced at 120° angles within a cross-section coaxial with the central optical fiber 11. When the present invention has N satellite cable laying reels, the reels are equally spaced at angle A within a cross-section coaxial with the central optical fiber 11, where A = 360° / N. With N satellite cable laying reels, the cable laying directions of the satellite cable laying reels are the same, such as... Figure 2The satellite cable reels all operate in a counter-clockwise direction, ensuring uniform distribution of the outer fibers and minimal pitch fluctuation. The number of satellite cable reels 2 in this invention is 1 to 3, and they are configured according to the target optical cable structure as "1 outer fiber + 1 central fiber", "2 outer fibers + 1 central fiber", or "3 outer fibers + 1 central fiber". This invention can be configured with N outer fibers (N is greater than or equal to 1) as needed. For example, with 6 outer fibers, 6 satellite cable reels are required, and the optical cable structure is configured as "6 outer fibers + 1 central fiber".

[0037] The pressurized adhesive supply assembly 5 of the present invention includes an adhesive storage container and an inert gas pressurization unit. The inert gas pressurization unit introduces inert gas into the adhesive storage container to pressurize the UV-curable adhesive to the coating assembly 4. The inert gas is nitrogen and / or argon. The coating assembly 4 is a coating die or adhesive mold. The fiber inlet channel includes a central hole for the central optical fiber 11 and an outer hole for the outer optical fiber. The fiber outlet channel is a single-hole fiber outlet channel after convergence. The UV curing assembly 6 includes a curing lamp and a curing chamber. The curing channel passes through the curing chamber. The power of the curing lamp is adjustable and / or the irradiation time is adjustable. The length counting assembly 7 includes a length counting wheel that rolls in contact with the special sensing optical cable and an encoder connected to the length counting wheel. The encoder outputs a length measurement signal. The winding assembly 8 includes a large-diameter winding wheel. The diameter of the winding wheel is greater than a preset threshold to reduce the bending stress of the optical cable after curing and improve the straightness after winding.

[0038] The controller 9 of this invention is used to determine the rotational speed n of the orbital winding assembly based on the set pitch p and the center fiber speed v, satisfying:

[0039]

[0040] Where n is revolutions per minute, v is meters per second, and p is meters per revolution. Controller 9 is also used to calculate the fiber release speed based on the winding radius R and the pitch p. ,satisfy:

[0041]

[0042] Based on this, the tension or speed of the fiber feeding is compensated and controlled to reduce the fiber feeding speed mismatch caused by the spiral path length being greater than the axial length of the central fiber. This avoids phenomena such as excessive looseness, excessive tightness, pitch fluctuation, local slippage, or uneven winding of the outer fiber during the winding process, thereby improving the consistency of the outer fiber winding tension, the pitch holding accuracy, and the symmetry and stability of the cable structure.

[0043] Preferably, the controller can be based on the theoretical fiber feeding speed. The deviation from the actual fiber feeding speed is used to perform closed-loop adjustment of the driving speed, braking damping, and / or feeding tension of the satellite feeding reel. Specifically, by setting up a tension detection unit, an encoding detection unit, or a reel angular velocity detection unit, the tension value, feeding speed, and equivalent radius of the reel corresponding to each satellite feeding reel can be obtained in real time. Independent compensation control is then performed based on the deviation between the theoretical and actual values ​​to improve the consistency of multiple outer optical fibers during the winding process.

[0044] More preferably, for multiple satellite fiber-laying reels, the controller can adopt a collaborative control method of "theoretical fiber-laying speed constraint + single-reel tension closed loop + multi-reel consistency compensation". That is, on the one hand, the actual fiber-laying speed of each external fiber is made to approximate the theoretical fiber-laying linear speed. On the other hand, it keeps the tension deviation between multiple satellite wire reels within a preset range, thereby reducing local tension unevenness caused by changes in reel radius, differences in friction between reels, or installation errors, and improving the uniformity of outer fiber distribution and the consistency of helical structure during the winding process.

[0045] Alternatively, the controller can perform dynamic radius compensation for each satellite reel based on the gradual decrease in reel radius during the wire feeding process, and correct the target angular velocity or braking force of the corresponding satellite reel in real time, so as to avoid fiber feeding speed mismatch caused by changes in the equivalent radius of the reel.

[0046] The beneficial effects of adopting the above-mentioned compensation control method are as follows: under the same central fiber axial velocity and target pitch, it can effectively reduce the tension fluctuation of the outer fiber winding, reduce pitch deviation, improve the consistency of the spatial distribution of multiple outer fibers, and improve the straightness and structural stability after cabling. Comparative experiments can further verify that after introducing the compensation control, the dispersion of outer fiber tension, pitch fluctuation amplitude, and local structural deviation can all be significantly improved.

[0047] The present invention also discloses a method for cabling a sensing fiber optic array, comprising a central fiber 11 and at least one outer fiber, including the following steps:

[0048] S1 releases the central optical fiber 11 and pulls it at the speed v of the central optical fiber.

[0049] S2 releases several external optical fibers, causing the external optical fibers to rotate around the central optical fiber 11 with the revolution winding assembly and form a spiral winding with a set pitch p; the rotation speed n of the revolution winding assembly 3 is set according to n=60v / p or adjusted in a closed loop.

[0050] The fiber optic cable speed in this step v is the linear velocity of the central fiber, and the winding radius R is the radial distance from the center line of the outer fiber to the axis of the central fiber.

[0051] S3 allows the central optical fiber 11 and the outer optical fiber to converge in the coating assembly 4 and be coated with UV-curable adhesive; inert gas is used to pressurize the adhesive storage container to supply adhesive to the coating assembly 4.

[0052] S4 allows the coated winding structure to enter the UV curing assembly 6 for curing into a cable; the UV curing power and / or irradiation time are adjustable and are controlled in conjunction with the cable forming speed.

[0053] S5 measures the length of the cable by the length measuring component 7 and then winds it up by the winding component; the length signal and / or tension sensing signal output by the length measuring component 7 are used to perform closed-loop correction on the speed v and revolution speed n of the central optical fiber 11.

[0054] In the cabling process of this invention, the outer optical fibers are uniformly distributed along the angular direction of the optical cable. After stranding, the angular deviation between adjacent units is within ±2°; the pitch fluctuation deviation is small, within ±3%; and the adhesive layer is uniform. The minimum warpage radius of the optical cable manufactured by the method of this invention is greater than 20 meters, and it is straight after winding.

[0055] Example 1: System Example

[0056] Reference Figure 1 This embodiment provides a multi-satellite disk special sensing fiber array winding and UV curing cabling system with adjustable pitch. The system in this embodiment includes, along the cabling direction, a central fiber release assembly 1, a satellite release assembly 2, a revolution winding assembly 3, a coating assembly 4, a pressure adhesive supply assembly 5, a UV curing assembly 6, a length counting assembly 7, and a winding assembly 8. A controller 9 is electrically connected to the revolution winding assembly 3, the central fiber 11 traction / winding drive, and the UV curing assembly 6.

[0057] The central fiber delivery assembly 1 is used to deliver the central optical fiber 11 and is driven by traction / rewind to output at a linear speed v; the satellite delivery assembly 2 is used to deliver several external optical fibers. Preferably, as shown below... Figure 2 As shown, the satellite cable laying assembly 2 includes three satellite cable laying reels, which are distributed at 120° intervals along a cross section coaxial with the central optical fiber 11, so as to facilitate the formation of an approximately equiangular array of the outer optical fibers on the cross section.

[0058] In one optional embodiment, the satellite cable delivery assembly 2 includes a first fiber delivery roller 21, a second fiber delivery roller 22, and a third fiber delivery roller 23, which are used to deliver the first external optical fiber 211, the second external optical fiber 221, and the third external optical fiber 231, respectively; the pressurized adhesive delivery assembly 5 includes an inert gas 51 and an adhesive storage container 52, which are used to pressurize the UV-curable adhesive 53 to the coating assembly 4; the UV curing assembly 6 includes a transparent glass tube 61 and a UV lamp 62 disposed on its outer side or circumferentially, which are used to cure the coated structure.

[0059] The revolution winding assembly 3 is used to drive the satellite wire laying assembly 2 to rotate around the axis of the central optical fiber 11, so that the outer optical fiber is spirally wound around the outer circumference of the central optical fiber 11 with a pitch p; when the central optical fiber 11 moves at a linear velocity v, the controller 9 controls the rotation speed n of the revolution winding assembly 3 so that n satisfies n=60v / p, thereby maintaining the set pitch at different linear velocities.

[0060] The UV curing component 6 is provided with a curing channel 61, and the power of the UV curing lamp 62 is adjustable and / or the irradiation time is adjustable. After the spiral winding structure coated with adhesive enters the curing channel 61, it is irradiated and cured by UV light to form a special sensing optical cable that is cured into a cable.

[0061] The length measuring component 7 is disposed between the UV curing component 6 and the winding component 8, and preferably includes a length measuring wheel and an encoder. The length measuring wheel contacts and rolls with the cabled optical cable to output a length measurement signal. The winding component 8 preferably uses a large-diameter winding wheel to reduce bending stress and improve the straightness after winding.

[0062] Optionally, the controller 9 calculates the fiber release speed based on the winding radius R and the pitch p. The controller compensates for and controls the pay-off tension and / or pay-off speed of the satellite pay-off assembly 2 accordingly. Preferably, the controller acquires the real-time tension, reel speed, and equivalent radius of the outer optical fiber corresponding to each satellite pay-off reel. Based on the theoretical pay-off speed deviation, target tension deviation, and multi-reel tension consistency deviation, the controller independently adjusts the braking force, driving torque, and / or pay-off speed of each satellite pay-off reel to improve the tension consistency and pitch stability of multiple outer optical fibers during the winding process. Furthermore, the controller can implement online radius compensation based on the dynamic changes in the reel radius of each satellite pay-off reel, and perform individual compensation, speed reduction, or shutdown of the corresponding satellite pay-off reel when an abnormal tension is detected in a single reel.

[0063] Example 2: Cable-forming structure example

[0064] The system described in this invention can be used to fabricate a special sensing optical cable structure of "3 outer optical fibers + 1 central optical fiber". Specifically, the central optical fiber serves as the core, and the three outer optical fibers are distributed at approximately 120° angular intervals in cross-section. They are spirally wound around the outer periphery of the central optical fiber with a set pitch in the axial direction. After coating and UV curing, a stable, integrated cable structure is formed. (Refer to...) Figure 5The system described in this invention can also be configured as a "1 outer fiber + 1 central fiber" structure for applications such as synchronous temperature-strain measurement. The central fiber and outer fiber can be configured as temperature-sensitive and strain-sensitive fibers, respectively, or they can respectively perform sensing and compensation functions to achieve temperature / strain decoupling or cross-sensitivity compensation. Furthermore, the number and type of the outer fiber can be expanded or replaced according to the target sensing requirements. The outer fiber can be selected as a scattering-enhancing fiber, fiber grating array, doped fiber, or other fibers with specific functions to achieve heterogeneous integration, distributed sensing, or composite sensing cabling.

[0065] Example 3: Method Example

[0066] The method for cabling using the above system includes: releasing the central optical fiber 11 and pulling it at a linear speed v; releasing several outer optical fibers and driving the revolution winding assembly 3 to rotate around the central optical fiber 11 to form a spiral winding with a pitch p; converging and coating with UV-curable adhesive at the coating assembly 4; curing the cable in the UV-curing assembly 6; and winding it by the winding assembly 8 after being measured by the length counting assembly 7; wherein the revolution speed n is set at n=60v / p and can be closed-loop corrected by combining the length counting signal and / or tension signal.

[0067] Concluding remarks

[0068] The above embodiments are only used to explain the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adjustable pitch multi-satellite disk sensing fiber optic cable system, comprising a central fiber delivery assembly (1) for delivering a central fiber (11); characterized in that: The satellite cable laying assembly (2) is used to lay out N external optical fibers, where N is greater than or equal to 1; N cable laying reels are evenly distributed along angle A in a cross section coaxial with the central optical fiber (11), where A = 360° / N; the orbital winding assembly (3) is used to drive the satellite cable laying assembly (2) to rotate around the axis of the central optical fiber (11), so that the external optical fibers are wound around the outer circumference of the central optical fiber (11) in a spiral manner; the coating assembly (4) is provided with an inlet channel and an outlet channel, which is used to coat the outer surface of the converging structure with UV-curable adhesive after the central optical fiber (11) and the external optical fibers converge in the inlet channel and output it from the outlet channel; the pressure-pressurized adhesive supply assembly (5) is connected to the coating assembly (4) and is used to supply the UV-curable adhesive to the coating assembly (4). The system includes: a UV curing component (6) with a curing channel for UV curing the spiral winding structure coated with the UV curing adhesive and outputting the cured sensing optical cable; a length measuring component (7) located between the UV curing component (6) and the winding component (8) for measuring the length of the sensing optical cable; a winding component (8) for collecting the cured sensing optical cable; and a controller (9) electrically connected to the revolution winding component (3), the central optical fiber (11) traction / winding drive, and the UV curing component (6) for controlling the rotation speed n of the revolution winding component (3) according to the set pitch parameter p and the linear speed v of the central optical fiber (11), so that n satisfies: n=60v / p; and the pitch p of all outer optical fiber windings is the same.

2. The adjustable pitch multi-satellite disk sensing fiber optic cable system according to claim 1, characterized in that: The controller (9) calculates the fiber release speed of the outer optical fiber based on the winding radius R and the pitch p. ,satisfy: R is the radial distance from the centerline of the outer fiber to the axis of the central fiber.

3. The adjustable pitch multi-satellite disk sensing fiber optic cable system according to claim 1 or 2, characterized in that: The satellite cable laying assembly (2) includes three satellite cable laying reels, which are equally spaced at 120° angles within a cross section coaxial with the central optical fiber (11).

4. The adjustable pitch multi-satellite disk sensing fiber optic cable system according to claim 1 or 2, characterized in that: The pressurized adhesive supply assembly (5) includes an adhesive storage container and an inert gas pressurization unit. The inert gas pressurization unit introduces inert gas into the adhesive storage container and pressurizes the UV-curable adhesive to the coating assembly (4).

5. An adjustable pitch multi-satellite disk sensing fiber optic cable system according to claim 1 or 2, characterized in that: The coating component (4) is a coating die or a coating mold. The fiber inlet channel includes a central hole for the central optical fiber (11) and an outer hole for the outer optical fiber. The fiber outlet channel is a single-hole fiber outlet channel after convergence.

6. The adjustable pitch multi-satellite disk sensing fiber optic cable system according to claim 1 or 2, characterized in that: The UV curing assembly (6) includes a curing lamp and a curing chamber, wherein the curing channel runs through the curing chamber, and the power of the curing lamp is adjustable and / or the irradiation time is adjustable.

7. An adjustable pitch multi-satellite disk sensing fiber optic cable system according to claim 1 or 2, characterized in that: The length counting component (7) includes a length counting wheel that rolls in contact with the sensing optical cable and an encoder connected to the length counting wheel, wherein the encoder outputs a length measurement signal.

8. An adjustable pitch multi-satellite disk sensing fiber optic cable system according to claim 1 or 2, characterized in that: The winding assembly (8) includes a winding wheel with a diameter greater than a preset threshold.

9. A method for cabling a sensing fiber optic array, comprising a central fiber (11) and at least one outer fiber, characterized in that: Includes the following steps: S1 releases the central optical fiber (11) and pulls it at the speed v of the central optical fiber; S2 releases several external optical fibers, causing the external optical fibers to rotate around the central optical fiber (11) with the revolution winding assembly and form a spiral winding with a set pitch p; the rotation speed n of the revolution winding assembly (3) is set according to n=60v / p or adjusted in a closed loop, where v is the linear velocity of the central optical fiber. S3 allows the central optical fiber (11) and the outer optical fiber to enter the coating assembly (4) for convergence and coating with UV-curable adhesive; S4 allows the coated winding structure to enter the UV curing assembly (6) to cure into a cable; S5 measures the length of the cable by the length measuring component (7) and winds it up by the winding component; the length signal and / or tension sensing signal output by the length measuring component (7) are used to perform closed-loop correction on the speed v and revolution speed n of the central optical fiber (11).

10. A method for cabling a sensing fiber optic array according to claim 9, characterized in that: In step S2, the speed of the external optical fiber laying line v is the linear velocity of the central fiber, and R is the radial distance from the centerline of the outer fiber to the axis of the central fiber.

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