Intelligent monitoring lighting cable for airport navigation and preparation method thereof

Abstract

The invention discloses an intelligent monitoring lighting cable for airport navigation aid and a preparation method, which belongs to the field of cables and comprises: a power transmission cable core and a monitoring function optical cable; the outside of the power transmission cable core and the monitoring function optical cable are provided with a non-magnetic protective layer and an outer sheath arranged in sequence from the inside to the outside; the power transmission cable core comprises a conductor, an inner semi-conductive shielding layer, an insulating layer, an outer semi-conductive shielding layer, a metal shielding tape and a first sheath arranged in sequence from the inside to the outside; the monitoring function optical cable comprises an optical fiber, a filling grease, an armor, a foaming support layer and a second sheath arranged in sequence from the inside to the outside; the power transmission cable core and the monitoring function optical cable are combined into a cable, which integrates signal transmission and power transmission, and realizes the unified cooperation of broadband access, equipment power consumption and signal transmission; the cable is used for controlling signals, providing large-capacity data bandwidth and equipment power consumption; and the cable is not subject to electromagnetic interference, has a long service life, and has high engineering economy and practicality.

Description

Technical Field

[0001] The invention belongs to the field of cables, and in particular to an intelligent monitoring lighting cable for airport navigation aids and a preparation method thereof. Background Art

[0002] At present, the "power carrier communication method" adopted by civil aviation systems at home and abroad, due to the limitations of power carrier bandwidth and transmission rate, in the application of the Advanced Ground Guidance System (A-MAGS system), one power supply circuit can actually control no more than 250 lights. The communication bandwidth is narrow and the engineering construction and laying are complicated, which obviously can no longer meet the needs of "power supply + control + communication".

[0003] However, smart airports require that various sensors and runway lights installed on the runway, FOD on the runway side, field monitoring equipment, air traffic control meteorological equipment, etc., all require data transmission or data transmission and power supply between devices or between different modules within the equipment to carry out data collection, transmission, processing, control, data fusion, background management and other tasks to achieve overall data system management.

[0004] Therefore, it is necessary to design an intelligent monitoring lighting cable and preparation method for airport navigation that integrates signal transmission and power transmission to solve the problem that broadband access and equipment power consumption cannot be coordinated in a unified manner and is not subject to electromagnetic interference. Summary of the invention

[0005] In order to overcome the above technical defects, the present invention provides an intelligent monitoring lighting cable for airport navigation to solve the problems involved in the background technology.

[0006] The present invention provides an intelligent monitoring lighting cable for airport navigation, comprising: a power transmission cable core and a monitoring function optical cable; the outside of the power transmission cable core and the monitoring function optical cable are provided with a non-magnetic protective layer and an outer sheath arranged in sequence from the inside to the outside; the power transmission cable core comprises a conductor, an inner semi-conductive shielding layer, an insulating layer, an outer semi-conductive shielding layer, a metal shielding tape and a first sheath arranged in sequence from the inside to the outside; the monitoring function optical cable comprises an optical fiber, a filling grease, an armor, a foamed supporting layer and a second sheath arranged in sequence from the inside to the outside; the non-magnetic protective layer adopts a non-metallic tape armor, and the non-magnetic protective layer is used to avoid electromagnetic induction.

[0007] Preferably or optionally, the power transmission cable core and the monitoring function optical cable are arranged in parallel; the difference between the outer diameters of the power transmission cable core and the monitoring function optical cable is ≤2mm.

[0008] Preferably or optionally, the material of the armor is stainless steel, the armor is a pull-out structure, the armor is filled with the filling grease, and the filling grease is used to seal and protect the optical fiber.

[0009] Preferably or optionally, the foamed support layer is formed by mixing low-density polyethylene and high-density polyethylene materials, adding a nucleating agent, and injecting nitrogen through an extruder head. The foamed support layer is used to ensure that the outer diameters of the power transmission cable core and the monitoring function optical cable are equal to create conditions for the balance of the non-magnetic protective layer.

[0010] Preferably or optionally, the material of the non-magnetic protective layer is polyester resin; the thickness of the non-magnetic protective layer is 0.6 mm and the width is 35 mm; the power transmission cable core and the monitoring function optical cable adopt a parallel structure and are tightly double-wrapped with the non-magnetic protective layer through a parallel mold, and the overlap rate of the wrapping is 60±5%; the non-magnetic protective layer is used to protect the power transmission cable core and the monitoring function optical cable.

[0011] Preferably or optionally, the outer layer material is high-density polyethylene added with anti-rat and ant additives and flame retardants.

[0012] The present invention also provides a method for preparing an intelligent monitoring lighting cable for airport navigation, comprising the following steps:

[0013] S1, preparing a power transmission cable core;

[0014] S2, preparing monitoring function optical cable;

[0015] S3, the outer side of the parallel power transmission cable core and the monitoring function optical cable is tightly wrapped with a non-magnetic protective layer in double layers, and the overlap rate of the wrapping is 60±5%; the material of the non-magnetic protective layer is polyester resin, and the thickness of the non-magnetic protective layer is 0.6mm and the width is 35mm;

[0016] S4, disposing an outer coating layer on the outside of the non-magnetic protective layer, wherein the material of the outer coating layer is high-density polyethylene added with anti-rat and ant additives and flame retardants.

[0017] Preferably or optionally, the S1 includes:

[0018] S101, twisting a plurality of copper wires together to form a conductor, wherein the diameter of the copper wires is 1.06-1.07 mm, and the twisting pitch of the copper wires is 30-34 mm;

[0019] S102, using a fully enclosed dry chemical cross-linked three-layer co-extrusion process to extrude an inner semi-conductive shielding layer, an insulating layer and an outer semi-conductive shielding layer outside the conductor;

[0020] The thickness of the inner semi-conductive shielding layer is ≥ 0.3 mm; the average thickness of the insulating layer is ≥ the nominal thickness, the nominal thickness is 2.6 mm, the minimum thickness of the insulating layer is ≥ 90% of the nominal thickness, and the difference between the maximum and minimum thickness of the insulating layer is ≤ 0.4 mm;

[0021] The thickness of the outer semi-conductive shielding layer is ≥ 0.3 mm;

[0022] S103, wrap a layer of metal shielding tape around the outer semi-conductive shielding layer. The metal shielding tape is made of copper tape with a thickness of 0.08 mm, the thinnest point is not less than 0.07 mm, and the width is 20 mm. The overlapping rate of the overlapping wrapping is ≥15%, and the wrapping is flat without sharp corners;

[0023] S104, extrude polyethylene outside the metal shielding tape to form a first sheath, wherein the minimum thickness of the first sheath is ≥1.40 mm, and the outer diameter of the first sheath is 12.9-13.3 mm.

[0024] Preferably or optionally, the S2 includes:

[0025] S201, selecting a single-mode optical fiber or a multi-mode optical fiber and the number of optical fiber cores that meet the engineering requirements according to the requirements;

[0026] S202, a tubular armor is provided on the outer side of the optical fiber, the armor is made of stainless steel, and the armor is a drawn stainless steel tube; the thickness of the armor is 0.2 mm; and the armor is filled with filling paste;

[0027] S203, mixing low-density polyethylene and high-density polyethylene, adding a nucleating agent, and injecting nitrogen through an extruder head to form a foaming support layer, wherein the outer diameter of the foaming support layer is 10 to 11 mm;

[0028] S204, extruding a second sheath made of medium-density polyethylene outside the foamed support layer, wherein the minimum thickness of the second sheath is ≥1.40 mm, and the outer diameter of the second sheath is 12.9-13.3 mm.

[0029] By adopting the above technical solution, compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The power transmission cable core and the monitoring function optical cable of the present invention are combined into a cable, which integrates signal transmission and power transmission, and realizes the unified cooperation of broadband access, equipment power consumption and signal transmission; the cable is used to control signals, provide large-capacity data bandwidth and equipment power consumption; solve the bandwidth and delay of the traditional power carrier mode; realize the "broadband access mode" to replace the "power carrier communication mode"; and the cable is not subject to electromagnetic interference, has a long service life, and has high engineering economy and practicality.

[0031] (2) The power transmission cable core and the monitoring function optical cable of the present invention are integrated into one, and the composite cable only needs to be laid once to meet the power supply, control and communication functions required by the smart airport, which has higher construction efficiency.

[0032] (3) The power transmission cable core and the monitoring function optical cable of the present invention are arranged in parallel and have a flat structure, which saves material costs.

[0033] (4) The material of the non-magnetic protective layer of the cable of the present invention is polyester resin and is provided with two layers, so as to avoid electromagnetic induction, completely prevent the cable sheath from breaking through the ground, and protect the power transmission cable core and the monitoring function optical cable.

[0034] (5) The rodent-proof additive for the outer layer of the present invention effectively prevents animals from gnawing on the cable, thus avoiding damage to the cable and improving the safety of the cable.

[0035] (6) The cable preparation method of the present invention adopts a central flat mold, adds chamfers to the mold, changes the point of action of the material on the wire core and thus changes the direction of pressure. In the cabling and sheathing processes, the problem of non-parallel production of flat structures is solved, and the continuous production of flat structure parallel cables is realized, thereby reducing the overall outer diameter of the cable and achieving cost reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the present invention.

[0037] The accompanying drawings are marked as follows:

[0038] Power transmission cable core 1, conductor 1-1, inner semi-conductive shielding layer 1-2, insulating layer 1-3, outer semi-conductive shielding layer 1-4, metal shielding tape 1-5, first sheath 1-6,

[0039] Monitoring function optical cable 2, optical fiber 2-1, filling grease 2-2, armor 2-3, foam support layer 2-4, second sheath 2-5,

[0040] Non-magnetic protective layer 3,

[0041] Outer layer 4. DETAILED DESCRIPTION

[0042] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the embodiments of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when used, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the scope of protection of the present invention.

[0048] See also Figure 1 The intelligent monitoring lighting cable for airport navigation aids of this embodiment includes: a power transmission cable core 1, a monitoring function optical cable 2, a non-magnetic protective layer 3 and an outer layer 4.

[0049] Specifically, the power transmission cable core 1 and the monitoring function optical cable 2 are parallel to each other; the power transmission cable core 1 is used for power transmission, and the monitoring function optical cable 2 is used for transmission and control signals; the power transmission cable core 1 and the monitoring function optical cable 2 are both provided with a non-magnetic protective layer 3 and an outer sheath 4 arranged in sequence from the inside to the outside; the power transmission cable core 1 includes a conductor 1-1, an inner semi-conductive shielding layer 1-2, an insulating layer 1-3, an outer semi-conductive shielding layer 1-4, a metal shielding tape 1-5 and a first sheath 1-6 arranged in sequence from the inside to the outside; the monitoring function optical cable 2 includes an optical fiber 2- 1. filling grease 2-2, armor 2-3, foam support layer 2-4 and second sheath 2-5; the power transmission cable core 1 and the monitoring function optical cable 2 are combined into a cable, which integrates signal transmission and power transmission to achieve unified collaboration of broadband access, equipment power consumption and signal transmission; the cable can simultaneously control signals, provide large-capacity data bandwidth and transmission equipment power consumption, solve the bandwidth and delay of traditional power carrier mode; realize the "broadband access mode" instead of "power carrier communication mode"; and the cable is not subject to electromagnetic interference, has a long service life, and has high engineering economy and practicality.

[0050] In a further embodiment, the power transmission cable core 1 and the monitoring function optical cable 2 are parallel and close to each other; the outer diameters of the power transmission cable core 1 and the monitoring function optical cable 2 differ by less than 2 mm; the power transmission cable core 1 and the monitoring function optical cable 2 are integrated into one, and the user only needs to lay the composite cable once to meet the power supply, control and communication functions required by the smart airport, and the construction efficiency is higher.

[0051] In a further embodiment, the material of the armor 2-3 is stainless steel, the armor 2-3 adopts a pull-out structure, the shape of the armor 2-3 is tubular; and the armor 2-3 is filled with filling grease 2-2 to seal and protect the optical fiber 2-1 in the armor 2-3.

[0052] In a further embodiment, the foamed support layer 2-4 is made of a mixture of low-density polyethylene and high-density polyethylene materials and a nucleating agent is added, and nitrogen is injected through an extruder head to produce the foamed support layer 2-4. The foamed support layer 2-4 is used to protect the optical cable. The extruder head is used to ensure that the outer diameters of the power transmission cable core 1 and the monitoring function optical cable 2 are equal, creating conditions for the balance of the subsequent non-magnetic protective layer 3.

[0053] In a further embodiment, the non-magnetic protective layer 3 is made of polyester resin material, and the thickness of the non-magnetic protective layer 3 is 0.6 mm and the width is 35 mm; the power transmission cable core 1 and the monitoring function optical cable 2 pass through the mold in parallel, and are tightly and double-wrapped with the non-magnetic protective layer 3, and the overlap rate of the wrapping is controlled at 60±5%; the non-magnetic protective layer 3 does not generate electromagnetic induction to completely prevent the cable sheath from breaking through the ground, and plays a role in protecting the power transmission cable core 1 and the monitoring function optical cable 2.

[0054] In a further embodiment, the material of the outer layer 4 is high-density polyethylene added with anti-rat and ant additives and flame retardants, which effectively prevents animals from gnawing on the cable, has better fireproof effect, and can adapt to more complex usage environments.

[0055] This embodiment also discloses a method for preparing an intelligent monitoring lighting cable for airport navigation, comprising the following steps:

[0056] S1, preparing a power transmission cable core 1;

[0057] S101, select the conductor 1-1 that meets the engineering cross-section requirements. In this embodiment, the cross-section is 6mm 2 The conductor 1-1 is a copper wire, which is made of 7 copper wires tightly twisted together. The diameter of the copper wire is 1.06-1.07 mm, the twisting direction of the copper wire is left-handed, and the pitch is 30-34 mm.

[0058] S102, adopts the fully enclosed dry chemical cross-linking three-layer co-extrusion process of conductor preheating, nitrogen heating and nitrogen cooling to extrude the inner semi-conductive shielding layer 1-2, the insulating layer 1-3 and the outer semi-conductive shielding layer 1-4 outside the conductor 1-1, effectively avoiding contact with pollutants and moisture absorption; according to the vulcanization temperature, line speed, water cooling, air pressure and other processes of the three materials for extruding the inner semi-conductive shielding layer 1-2, the insulating layer 1-3 and the outer semi-conductive shielding layer 1-4, a cross-linking machine is used to produce the inner semi-conductive shielding layer 1-2, the insulating layer 1-3 and the outer semi-conductive shielding layer 1-4; the conductor preheating device should be used when starting the machine, and the temperature is 65-85℃; the nitrogen pressure is not less than 10bar when starting the machine, and the speed and temperature can be increased to the process speed and temperature only after the nitrogen pressure reaches 10bar and the pressure is balanced; the starting temperature of the vulcanization tube is 240℃, the deceleration temperature is 240℃, and the deceleration temperature is 240℃. The temperature of the first section of the tooling mold is 380℃, the second section is 360℃, the third section is 350℃, the fourth section is 340℃, the fifth section is 330℃, and the sixth section is 320℃; the line speed is 5.33m / min at the beginning, 13.0m / min in normal production, 7.54m / min at the deceleration, and 6.50m / min at the stop; the upper sealing rubber pad is 14mm, and the lower sealing aluminum alloy pad is 30mm; the cooling method is water cooling; during the summer, from May 1st to September 30th, the temperature of each zone of the vulcanizing tube can be reduced by 10-15℃, and the production line speed is allowed to be reduced by 5% during the summer: the maximum elongation of the formed conductor, the inner semi-conductive shielding layer 1-2, the insulating layer 1-3 and the outer semi-conductive shielding layer 1-4 under load is 175%, and the maximum permanent elongation after cooling is 15%;

[0059] The thickness of the inner semi-conductive shielding layer 1-2 is ≥ 0.3mm; the average thickness of the insulating layer 1-3 is ≥ the nominal thickness, of which the nominal thickness is 2.6mm, the minimum thickness of the insulating layer 1-3 is ≥ 90% of the nominal thickness, and the difference between the maximum and minimum thicknesses of the insulating layer 1-3 is ≤ 0.4mm; the thickness of the outer semi-conductive shielding layer 1-4 is ≥ 0.3mm; the thickness of the insulating layer 1-3 is designed according to the average electric field strength to be borne during insulation, and the average field strength method is used to design the thickness of the insulating layer 1-3, taking into account the safety factor, and the insulating material is made of ultra-clean insulating material, and the cable is designed to be an insulation-thinning type, which effectively meets the mechanical properties, electrical properties and engineering usability;

[0060] The materials of the inner semi-conductive shielding layer 1-2 and the outer semi-conductive shielding layer 1-4 are mixed with cross-linked polyethylene base material, conductive carbon black, EVA, antioxidant, ethylene-vinyl acetate copolymer and other compounding agents, and the resistivity of the material before and after aging is: inner semi-conductive shielding ≥1000Ω·m, outer semi-conductive shielding ≥500Ω·m. Considering that the thickness of the inner semi-conductive shielding layer 1-2 and the outer semi-conductive shielding layer 1-4 increases with the increase of the voltage level, since the electric field strength on the insulating layer 1-3 is larger inside and smaller outside, and since the voltage level of the intelligent monitoring lighting cable for airport navigation is low, the thickness of the inner semi-conductive shielding layer 1-2 and the outer semi-conductive shielding layer 1-4 is designed to be ≥0.3mm, avoiding the potential difference between the inner semi-conductive shielding layer 1-2 and the outer semi-conductive shielding layer 1-4, and effectively avoiding the generation of partial discharge;

[0061] S103, wrapping a metal shielding tape 1-5 on the outer semi-conductive shielding layer 1-4 in an overlapping manner, wherein the metal shielding tape 1-5 is made of copper tape, and the thickness of the copper tape is 0.07-0.08 mm. In this embodiment, the thickness of the copper tape is 0.08 mm, and the width of the copper tape is 20 mm. The overlapping wrapping method is adopted, and the overlapping wrapping rate is not less than 15%, and the wrapping is flat and has no sharp corners;

[0062] S104, extruding a polyethylene material outside the metal shielding tape 1-5 to form a first sheath 1-6, wherein the minimum thickness of the first sheath 1-6 is not less than 1.40 mm, and the outer diameter of the first sheath 1-6 is 12.9 to 13.3 mm;

[0063] Step 2: Prepare monitoring function optical cable 2;

[0064] S201, optical fiber 2-1 can be single-mode or dual-mode optical fiber. In this embodiment, single-mode optical fiber is selected. There are four groups of single-mode optical fibers, which are numbered 1, 2, 3, and 4, and are marked in blue, orange, green, and brown, respectively.

[0065] S202, a tubular armor 2-3 is arranged on the outside of the optical fiber 2-1, the armor 2-3 is filled with filling grease 2-2, the armor 2-3 is made of stainless steel, the shape of the armor 2-3 is tubular, the structure is a drawn stainless steel tube, and the thickness of the armor 2-3 is 0.2 mm;

[0066] S203, preparing a foaming support layer 2-4, the foaming support layer 2-4 is formed by mixing linear low-density polyethylene and high-density polyethylene materials, adding a nucleating agent, and injecting nitrogen through an extruder head; the specific ratio is 22:78, and the nucleating agent is 0.6%; the melt temperature of the equipment is controlled at 185 degrees, and the temperature of the head is reduced by 5 degrees per section to achieve the head temperature control at 170 degrees. The entire temperature setting gradually decreases from front to back, presenting a sine wave distribution curve, and the melt is fully plasticized; the nitrogen injection system controls the pressure at 200bar~350bar, and the nitrogen is fully stirred and melted in the plastic melt to achieve a stable melt pressure; the outer diameter of the foaming support layer 2-4 is controlled at 10~11mm to achieve the function of supporting the outer diameter and protecting the optical cable;

[0067] S204, preparing the second sheath 2-5, extruding a medium-density polyethylene material outside the foaming support layer 2-4 to form the second sheath 2-5, the minimum thickness of the second sheath 2-5 is not less than 1.40 mm, and the outer diameter of the second sheath 2-5 is 12.9 to 13.3 mm;

[0068] S3, prepare a non-magnetic protective layer 3, and wrap the non-magnetic protective layer 3 tightly in double layers on the outside of the parallel power transmission cable core 1 and the monitoring function optical cable 2, and the overlap rate of the wrapping is controlled at 60±5%; the material of the non-magnetic protective layer 3 is high-strength polyester resin, and the thickness of the non-magnetic protective layer 3 is 0.6mm and the width is 35mm; the power transmission cable core 1 and the monitoring function optical cable 2 are produced in a Ф1250 cabling machine, the pay-off frame and the take-up frame are produced without pre-twisting, the wire feed mold and the molding mold are made of nylon material structure and adopt an outer circle and inner parallel circle structure, and the edge is chamfered by 15 degrees for smooth transition; when wrapping the non-magnetic protective layer 3, the overlap width of each layer is set to 21mm~24mm; the non-magnetic protective layer 3 strip joint adopts a pneumatic molding tool, and the sharp edges and burrs after one-time molding need to be sharpened and polished to prevent unevenness during the production of the outer layer 4;

[0069] In order to ensure the bending performance of the cable, the non-magnetic protective layer 3 is wrapped in double layers. Compared with other tapes, the polyester resin tape is light in weight, high in strength, large in elastic modulus and smoother. With the same performance and ensuring product quality, the overlap rate of the non-magnetic protective layer 3 is 60±5%;

[0070] S4, prepare the outer coating 4, extrude high-density polyethylene material on the outside of the non-magnetic protective layer 3 to form the outer coating 4, add anti-rat and ant additives and flame retardants to the outer coating 4, so that the outer coating 4 can be fire-resistant and can effectively prevent animals from gnawing the cable, so that the cable can adapt to more complex usage environments.

[0071] The cable of this embodiment is a composite cable that combines the power transmission cable core 1 and the monitoring function optical cable 2, which can be used for dispatching and control, providing large-capacity data bandwidth and equipment power consumption functions; solving the bandwidth and delay of the traditional power carrier mode; realizing the "broadband access mode" to replace the "power carrier communication mode", integrating signal transmission and power transmission, solving the problem that broadband access, equipment power consumption, and signal transmission cannot be unified and coordinated. This invention has strong engineering adaptability, is not subject to electromagnetic interference, has a long service life, and has high engineering economy and practicality.

[0072] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. An intelligent monitoring lighting cable for airport navigation, characterized in that: include: Power transmission cable core and monitoring function optical cable; The outside of the power transmission cable core and the monitoring function optical cable are provided with a non-magnetic protective layer and an outer layer arranged in sequence from the inside to the outside; the power transmission cable core includes a conductor, an inner semi-conductive shielding layer, an insulating layer, an outer semi-conductive shielding layer, a metal shielding tape and a first sheath arranged in sequence from the inside to the outside; the monitoring function optical cable includes an optical fiber, a filling grease, an armor, a foamed supporting layer and a second sheath arranged in sequence from the inside to the outside; the non-magnetic protective layer adopts a non-metallic tape armor, and the non-magnetic protective layer is used to avoid electromagnetic induction.

2. The intelligent monitoring lighting cable for airport navigation according to claim 1 is characterized in that: The power transmission cable core and the monitoring function optical cable are arranged in parallel; the difference in outer diameter between the power transmission cable core and the monitoring function optical cable is ≤2mm.

3. The intelligent monitoring lighting cable for airport navigation according to claim 1 is characterized in that: The material of the armor is stainless steel, the armor is a pull-out structure, and the armor is filled with the filling grease, which is used to seal and protect the optical fiber.

4. The intelligent monitoring lighting cable for airport navigation according to claim 1 is characterized in that: The foam support layer is formed by mixing low-density polyethylene and high-density polyethylene materials, adding a nucleating agent, and injecting nitrogen through an extruder head. The foam support layer is used to ensure that the outer diameters of the power transmission cable core and the monitoring function optical cable are equal to create conditions for the balance of the non-magnetic protective layer.

5. The intelligent monitoring lighting cable for airport navigation according to claim 1 is characterized in that: The material of the non-magnetic protective layer is polyester resin; the thickness of the non-magnetic protective layer is 0.6 mm; the power transmission cable core and the monitoring function optical cable adopt a parallel structure and are passed through a parallel mold and are tightly double-wrapped with the non-magnetic protective layer; the wrapping overlap rate is 60±5%; the non-magnetic protective layer is used to protect the power transmission cable core and the monitoring function optical cable.

6. The intelligent monitoring lighting cable for airport navigation according to claim 1 is characterized in that: The outer layer material is high-density polyethylene added with anti-rat and ant additives and flame retardants.

7. A method for preparing an intelligent monitoring lighting cable for airport navigation as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: S1, preparing a power transmission cable core; S2, preparing monitoring function optical cable; S3, the outer side of the parallel power transmission cable core and the monitoring function optical cable is tightly wrapped with a non-magnetic protective layer in double layers, and the overlap rate of the wrapping is 60±5%; the material of the non-magnetic protective layer is polyester resin, and the thickness of the non-magnetic protective layer is 0.6mm; S4, disposing an outer coating layer on the outside of the non-magnetic protective layer, wherein the material of the outer coating layer is high-density polyethylene added with anti-rat and ant additives and flame retardants.

8. The method for preparing an intelligent monitoring lighting cable for airport navigation according to claim 7, characterized in that: The S1 includes: S101, twisting a plurality of copper wires together to form a conductor, wherein the diameter of the copper wires is 1.06-1.07 mm, and the twisting pitch of the copper wires is 30-34 mm; S102, using a fully enclosed dry chemical cross-linked three-layer co-extrusion process to extrude an inner semi-conductive shielding layer, an insulating layer and an outer semi-conductive shielding layer outside the conductor; The thickness of the inner semi-conductive shielding layer is ≥ 0.3 mm; the average thickness of the insulating layer is ≥ the nominal thickness, the nominal thickness is 2.6 mm, the minimum thickness of the insulating layer is ≥ 90% of the nominal thickness, and the difference between the maximum and minimum thickness of the insulating layer is ≤ 0.4 mm; S103, wrap a layer of metal shielding tape around the outer semi-conductive shielding layer. The metal shielding tape is made of copper tape with a thickness of 0.08 mm, the thinnest point is not less than 0.07 mm, and the width is 20 mm. The overlapping rate of the overlapping wrapping is ≥15%, and the wrapping is flat without sharp corners; S104, extrude polyethylene outside the metal shielding tape to form a first sheath, wherein the minimum thickness of the first sheath is ≥1.40 mm, and the outer diameter of the first sheath is 12.9-13.3 mm.

9. The method for preparing an intelligent monitoring lighting cable for airport navigation according to claim 7, characterized in that: The S2 includes: S201, selecting a single-mode optical fiber or a multi-mode optical fiber and the number of optical fiber cores that meet the engineering requirements according to the requirements; S202, a tubular armor is provided on the outer side of the optical fiber, the armor is made of stainless steel, and the armor is a drawn stainless steel tube; the thickness of the armor is 0.2 mm; and the armor is filled with filling paste; S203, mixing low-density polyethylene and high-density polyethylene, adding a nucleating agent, and injecting nitrogen through an extruder head to form a foaming support layer, wherein the outer diameter of the foaming support layer is 10 to 11 mm; S204, extruding a second sheath made of medium-density polyethylene outside the foamed support layer, wherein the minimum thickness of the second sheath is ≥1.40 mm, and the outer diameter of the second sheath is 12.9-13.3 mm.

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