CN110850539B - Optical signal-based identification optical cable and preparation method thereof - Google Patents
Optical signal-based identification optical cable and preparation method thereof Download PDFInfo
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- CN110850539B CN110850539B CN201911121002.5A CN201911121002A CN110850539B CN 110850539 B CN110850539 B CN 110850539B CN 201911121002 A CN201911121002 A CN 201911121002A CN 110850539 B CN110850539 B CN 110850539B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
- G02B6/4432—Protective covering with fibre reinforcements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/56—Processes for repairing optical cables
- G02B6/564—Repair sets
Abstract
The invention discloses an optical signal-based identification optical cable and a preparation method thereof, belonging to the technical field of optical transmission optical cables and comprising the following steps: the optical unit is used for optical cable communication transmission; the reinforcing piece is coated on the outer surface of the light unit; the sheath layer is coated on the outer surface of the reinforcing piece and used for protecting the optical unit; the identification body is embedded in the sheath layer and used for transmitting visible light, colored single-wavelength visible light is injected into the end part of the identification body, and a visible light leakage light band is formed on the surface of the sheath layer. The identification body is embedded in the sheath layer of the optical cable, the identification body is of a full-coating type, exposed type or three-layer co-extrusion type structure in the sheath layer, colored single-wavelength visible light is injected into the identification body, a visible light leakage light band can be formed on the surface of the outer sheath layer of the optical cable, and operation and maintenance personnel can determine the routing of the optical cable according to the light band without using instruments and equipment.
Description
Technical Field
The invention relates to the technical field of optical transmission cables, in particular to an optical signal-based identification cable and a preparation method thereof.
Background
In the areas of optical cable cross connecting cabinet, optical fiber distribution frame, data center and optical communication machine room, a large number of communication optical cables are distributed. The optical cables are distinguished by colors, the outer sheath of the single-mode optical cable is yellow, the multimode optical cable is orange, and the OM3 high-bandwidth multimode optical cable is water blue, however, for example, the single-mode yellow optical cable is used, an ultrahigh number of yellow optical cables are distributed on the optical fiber distribution frame, the yellow single-mode optical cable wiring routes in some areas are crossed and overlapped, the route of each optical cable cannot be accurately identified and distinguished, and great difficulty is brought to overhaul and replacement of the optical cable in equipment.
In the existing optical cable identification technology, identification lines, color rings and characters are often added on the surface of an optical cable sheath or are distinguished by colors, however, in an area with ultrahigh quantity of optical cables densely arranged, the identification methods cannot achieve uniqueness and cannot distinguish one by one. The method of injecting visible light into one end of the optical cable can only identify the matching of two ends, cannot determine the construction route of the whole optical cable, and cannot solve the problems of maintenance and replacement of the optical cable.
Therefore, innovative technologies are urgently needed to identify the whole route of the optical cable, so that the optical cable is convenient to overhaul and replace.
Disclosure of Invention
The invention aims to overcome the defects that the matching of two ends can only be identified and the construction route of the whole optical cable cannot be determined by a method for injecting visible light into one end of the optical cable in the background technology, and provides an optical signal-based identification optical cable and a preparation method thereof.
The invention provides an identification optical cable based on optical signals, which is characterized by comprising:
an optical unit for optical cable communication transmission;
a reinforcement member covering an outer surface of the light unit;
the sheath layer is coated on the outer surface of the reinforcing piece and used for protecting the optical unit;
the identification body is embedded in the sheath layer and used for transmitting visible light, colored single-wavelength visible light is injected into the end of the identification body, and a visible light leakage band is formed on the surface of the sheath layer.
The preferred scheme is as follows: the identification body is made of a light-transmitting material, the light transmittance of the identification body is greater than 85%, and the light refractive index of the identification body is greater than that of the sheath layer.
The preferred scheme is as follows: the materials of the recognition body are as follows: any one or more of transparent polyvinyl chloride, polyethylene, thermoplastic polyurethane elastomer, nylon elastomer or polymethyl methacrylate.
The preferred scheme is as follows: the sheath layer is made of the following materials: any one or more of polyvinyl chloride, flame retardant polyolefin, thermoplastic polyurethane elastomer, nylon elastomer or polystyrene.
The preferred scheme is as follows: the thickness of restrictive coating is less than 0.6mm, the recognition body is transparent solid stick structure, the recognition body is one or many, the recognition body imbeds in the restrictive coating completely.
The preferred scheme is as follows: the thickness of restrictive coating is greater than 0.6mm, the recognition body is transparent solid stick structure, and the recognition body is one or many, the surface part embedding of recognition body is in the restrictive coating in situ, and the part exposes outside the restrictive coating, the recognition body exposes the surface area outside the restrictive coating and is less than the 15% of the whole surface area of recognition body.
The preferred scheme is as follows: the restrictive coating includes oversheath layer and inner sheath layer, the recognition body is transparent solid layer structure, the cladding of inner sheath layer is at the reinforcement surface, the recognition body cladding is at inner sheath layer surface, the outer surface of oversheath layer cladding in the recognition body.
The invention provides a preparation method of an identification optical cable based on optical signals, which comprises the following steps:
the identification body is made of a light-transmitting material, the light transmittance of the identification body is greater than 85%, and the light refractive index of the identification body is greater than that of the sheath layer;
an identification body extrusion flow channel and a sheath layer extrusion flow channel are arranged in the head of the extruder;
after the optical unit and the reinforcing piece are synchronously output from the extruder, the extruder synchronously extrudes the sheath layer and the recognition body, the sheath layer is coated on the outer surface of the reinforcing piece, and the recognition body is embedded in the sheath layer;
opening a cooling air pipe in the machine head, introducing cooling compressed air into the cooling air pipe, and injecting the cooling compressed air along the inner wall of the sheath layer to enable the inner pressure of the sheath layer to be larger than the outer pressure;
and (3) sending the sheath layer and the identification body extruded from the extruder into a water tank for cooling, and cooling and shaping the sheath layer and the identification body.
The third aspect of the invention provides a preparation method of an identification optical cable based on optical signals, which comprises the following steps:
the identification body is made of a light-transmitting material, the light transmittance of the identification body is greater than 85%, and the light refractive index of the identification body is greater than that of the inner sheath layer and the outer sheath layer;
an identifier extrusion flow channel, an inner sheath layer extrusion flow channel and an outer sheath layer extrusion flow channel are arranged in a machine head of the extruder;
after the optical unit and the reinforcing piece are synchronously output from the extruder, the extruder synchronously extrudes the inner sheath layer, the identification body and the outer sheath layer from inside to outside, wherein the inner sheath layer is coated on the outer surface of the reinforcing piece;
opening a cooling air pipe in the machine head, introducing cooling compressed air into the cooling air pipe, and injecting the cooling compressed air along the inner wall of the inner sheath layer to enable the inner pressure of the inner sheath layer to be larger than the outer pressure;
and (3) sending the inner sheath layer, the identification body and the outer sheath layer extruded from the extruder into a water tank for cooling, and cooling and shaping the inner sheath layer, the identification body and the outer sheath layer.
The preferred scheme is as follows: the temperature of the cooled compressed air is substantially the same as the temperature of the cooling water in the water tank.
On the basis of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the optical signal-based identification cable, the identification body is embedded in the sheath layer of the optical cable, the identification body is of a full-coating type, exposed type or three-layer co-extrusion type structure in the sheath layer, colored single-wavelength visible light is injected into the identification body, a visible light leakage light band can be formed on the surface of the outer sheath layer of the optical cable, and operation and maintenance personnel can determine the routing of the optical cable according to the light band without using instruments and equipment, so that a feasible scheme is found for overhauling and replacing the optical cable in an ultrahigh optical cable dense routing area, a routing cross overlapping area or a routing disordered area.
The invention relates to a preparation method of an identification optical cable based on optical signals. Due to the nonlinearity of the outer sheath layer and the identification body, and the nonlinearity of the inner sheath layer and the identification body in the cooling process, the contact surface of the outer sheath layer and the identification body is non-uniform, and when light is injected into the identification body, light leakage can occur at the contact surface. According to the method, by using the principle of optical signal leakage, when colored single-wavelength visible light is injected, a leakage light band of the visible light is formed on the surface of the outer sheath layer of the optical cable, so that operation and maintenance personnel can easily determine the arrangement route of the optical cable according to the light band, and a feasible method is found for maintenance, overhaul and replacement of the optical cable.
According to the preparation method of the identification optical cable based on the optical signal, after the identification body, the outer sheath layer or the inner sheath layer is extruded, the cooling compressed air is injected into the inner sheath layer, so that the internal pressure of the inner sheath layer is larger than the external pressure, the cooling of the inner wall of the sheath layer is accelerated by the injection of the cooling compressed air, the cooling of the outer wall of the sheath layer is accelerated by the cooling water in the water tank, the free retraction of the sheath layer is inhibited by the air pressure action of the cooling compressed air, the sheath layer is finally shaped into a round tube shape by regulating and controlling the air pressure of the cooling compressed air and then carrying out a section of water cooling, the deformation of the sheath layer can be greatly reduced by a cooling compressed air sizing method, and the diameter and the roundness of the optical cable are accurately controlled.
Drawings
FIG. 1 is a schematic view of a first embodiment of a fiber optic cable of the present invention;
FIG. 2 is a schematic view of a second embodiment of a fiber optic cable of the present invention;
fig. 3 is a schematic view of a third embodiment of the optical cable of the present invention.
Reference numerals: 1-optical unit, 2-strength member, 3-identification body, 4-sheath layer, 5-central strength member, 11-colored optical fiber, 12-micro-sleeve layer, 13-optical fiber, 14-sub-cable strength member, 15-sub-cable sheath layer, 41-outer sheath layer, and 42-inner sheath layer.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Example 1
Referring to fig. 1, an embodiment of the present invention provides an optical signal-based identification cable, including:
the optical unit 1, the optical unit 1 can be colored optical fiber or tight-buffered optical fiber, the total optical fiber core number of the optical unit 1 is 1-48 cores according to the requirement, a silica system single mode or multimode optical fiber is adopted, and the optical unit 1 is used for optical cable communication transmission. The strength member 2, strength member 2 can be glass yarn or aramid yarn, need set for according to the pulling force of optical cable, and the cladding of strength member 2 is at the surface of optical unit 1 for protect optical unit 1 and wholly promote the structural strength of optical cable.
Preferably, the recognition body 3 is made of a light-transmitting material, the light transmittance of the recognition body 3 is greater than 85%, and the light refractive index of the recognition body 3 is greater than that of the sheath layer 4. The material of the recognition body 3 can be transparent polyvinyl chloride (PVC), Polyethylene (PE), thermoplastic polyurethane elastomer (TPU), nylon elastomer (PA) or polymethyl methacrylate (PMMA) with a customized formula. The optical refractive index of the sheath layer 4 material is lower than that of the identification body 3 material, and the sheath layer 4 material can be customized polyvinyl chloride (PVC), Flame Retardant Polyolefin (FRPE), thermoplastic polyurethane elastomer (TPU), nylon elastomer (PA) or Polystyrene (PS).
Example 2
Referring to fig. 2, an embodiment of the present invention provides an optical signal-based identification cable, including:
the light unit 1 is a multi-core micro-beam tube, the light unit 1 comprises a colored optical fiber 11, and a micro-sleeve layer 12 is sleeved outside the colored optical fiber 11. The optical unit 1 has 1-144 cores as total optical fiber cores as required, and adopts silica-based single-mode or multi-mode optical fiber. The optical unit 1 is used for optical cable communication transmission. The strength member 2, strength member 2 can be glass yarn or aramid yarn, need set for according to the pulling force of optical cable, and the cladding of strength member 2 is at the surface of optical unit 1 for protect optical unit 1 and wholly promote the structural strength of optical cable.
When the thickness at restrictive coating 4 is greater than 0.6mm or restrictive coating 4 is dark, the tip of recognition body 3 injects into colored single wavelength visible light, because restrictive coating 4's thickness is thicker or the colour is dark, inject into the luminous intensity that colored single wavelength visible light in recognition body 3 sees through restrictive coating 4 and weakens, consequently need imbed in restrictive coating 4 at recognition body 3's surface part, recognition body 3 surface part exposes outside restrictive coating 4, it forms the light band of revealing of a visible light to expose recognition body 3 on restrictive coating 4 surface. The surface area of the recognition body 3 exposed outside the sheath layer 4 is controlled to be less than 15% of the whole surface area of the recognition body 3, so that the colored single-wavelength visible light injected into the recognition body 3 can be transmitted in the recognition body 3 at a longer distance, and the colored single-wavelength visible light injected into the recognition body 3 is prevented from being excessively dispersed.
Preferably, the recognition body 3 is made of a light-transmitting material, the light transmittance of the recognition body 3 is greater than 85%, and the light refractive index of the recognition body 3 is greater than that of the sheath layer 4. The material of the recognition body 3 can be transparent polyvinyl chloride (PVC), Polyethylene (PE), thermoplastic polyurethane elastomer (TPU), nylon elastomer (PA) or polymethyl methacrylate (PMMA) with a customized formula. The optical refractive index of the sheath layer 4 material is lower than that of the identification body 3 material, and the sheath layer 4 material can be customized polyvinyl chloride (PVC), Flame Retardant Polyolefin (FRPE), thermoplastic polyurethane elastomer (TPU), nylon elastomer (PA) or Polystyrene (PS).
Example 3
Referring to fig. 3, an embodiment of the present invention provides an optical signal-based identification cable, including:
a central reinforcing part 5 is arranged at the central position of the optical cable, and the central reinforcing part 5 is a nonmetal central reinforcing part. The central strength member 5 is optional depending on the cable construction and may be a glass fibre reinforced plastic rod (GFRP), aramid reinforced plastic rod (KFRP) or other type of fibre reinforced plastic rod. The optical unit 1, optical unit 1 are single core, two-core or multicore sub-optical cable, and optical unit 1 is equipped with many, and many optical units 1 are evenly arranged along the circumference of central reinforcement 5. The optical unit 1 comprises an optical fiber 13, the optical fiber 13 can be a colored optical fiber, a tightly-sleeved optical fiber or a loosely-sleeved optical fiber, a sub-cable sheath layer 15 is sleeved outside the optical fiber 13, a sub-cable reinforcement 14 is arranged between the optical fiber 13 and the sub-cable sheath layer 15, the sub-cable reinforcement 14 can be aramid yarn or glass yarn, and the sub-cable reinforcement 14 is set according to the tensile force requirement of the sub-cable. The optical unit 1 has 1-48 cores as required, and adopts silica-based single-mode or multi-mode optical fiber. The optical unit 1 is used for optical cable communication transmission. The strength member 2, strength member 2 can be glass yarn or aramid yarn, need set for according to the pulling force of optical cable, and the cladding of strength member 2 is at the surface of optical unit 1 for protect optical unit 1 and wholly promote the structural strength of optical cable.
The colored single-wavelength visible light is injected into the end part of the identification body 3, and due to the fact that the contact surfaces of the outer sheath layer 41, the inner sheath layer 42 and the identification body 3 are non-linear in the cooling and forming process, non-uniformity occurs on the contact surfaces of the outer sheath layer 41 and the identification body 3, after the colored single-wavelength visible light is injected into the identification body, light leakage occurs on the contact surfaces of the outer sheath layer 41 and the identification body 3, and therefore a visible light leakage light band is formed on the surface of the outer sheath layer 41. The recognition body 3 can be totally coated on the inner sheath layer 42 for the transparent solid layer structure, and the operation and maintenance personnel can easily see the light band sent out on the optical cable from each angle, determine the routing of the optical cable and avoid the visual blind area.
Example 4
The embodiment of the invention provides a preparation method of an identification optical cable based on optical signals, which comprises the following steps:
step 101, the identification body 3 is made of a light-transmitting material, the light transmittance of the identification body 3 is greater than 85%, and the light refractive index of the identification body 3 is greater than that of the sheath layer 4. The greater the light transmittance of the recognition object 3, the smaller the attenuation of the visible ray transmitted within the recognition object 3, and thus the longer the transmission distance. The optical refractive index of the recognition body 3 is greater than that of the sheath layer 4, so that the visible light forms total reflection at the contact surface of the recognition body 3 and the sheath layer 4, the larger the difference between the optical refractive indexes of the recognition body 3 and the sheath layer 4 is, the larger the numerical aperture is, the larger the incident angle of the total reflection formed by the visible light is, and the stronger the capability of the end surface for receiving the visible light is.
And 102, arranging an identification body extrusion flow channel and a sheath layer extrusion flow channel in a machine head of the extruder, wherein the identification body extrusion flow channel is used for extruding the identification body 3, and the sheath layer extrusion flow channel is used for extruding the sheath layer 4.
103, after the optical unit 1 and the reinforcement 2 are synchronously output from the extruder, the extruder synchronously extrudes the sheath layer 4 and the recognition body 3, the sheath layer 4 is coated on the outer surface of the reinforcement 2, and the recognition body 3 is embedded in the sheath layer 4. According to the thickness and the color of the sheath layer 4, the identification body 3 is fully embedded in the sheath layer 4 and partially embedded in the sheath layer 4. The method specifically comprises the following steps: when the thickness of the sheath layer 4 is larger than 0.6mm or the color of the sheath layer 4 is dark, the identification body 3 is extruded to be of a transparent solid rod structure, the surface part of the identification body 3 is embedded in the sheath layer 4, the part of the identification body is exposed out of the sheath layer 4, and the surface area of the identification body 3 exposed out of the sheath layer 4 is smaller than 15% of the whole surface area of the identification body 3. When the thickness of restrictive coating 4 is less than 0.6mm or the colour of restrictive coating 4 is the light colour, discernment body 3 is transparent solid rod structure, and discernment body 3 imbeds completely in restrictive coating 4.
And 104, opening a cooling air pipe in the machine head before the recognition body 3 and the outer sheath 4 are sent into the water tank, introducing cooling compressed air into the cooling air pipe, and injecting the cooling compressed air along the inner wall of the sheath layer 4 to enable the inner pressure of the sheath layer 4 to be larger than the outer pressure. In the water tank cooling process, the material of the identification body 3 and the material of the outer sheath 4 have different thermal shrinkage rates, so that the identification body 3 and the part without the identification body 3 in the outer sheath 4 are not uniformly shrunk, the shape of the outer sheath 4 is elliptical, and the out-of-roundness exceeds the standard requirement. This step adopts cooling compressed air sizing technique to increase the cooling trachea in the extruder, and the cooling trachea inserts cooling compressed air, and the back is extruded in step to discernment body 3 and restrictive coating 4, and cooling compressed air pours into along the inner wall of restrictive coating 4, and the restrictive coating internal pressure is higher than the external pressure, therefore restrictive coating 4 can form circular state.
And 105, sending the sheath layer 4 and the identification body 3 extruded from the extruder into a water tank for cooling, and cooling and shaping the sheath layer 4 and the identification body 3. The recognition body 3 and the jacket layer 4 get into the basin cooling, the cooling of 4 inner walls of jacket layer has been accelerated in the injection of cooling compressed air, the cooling water in the basin has accelerated the cooling of 4 outer walls of jacket layer, the atmospheric pressure effect of cooling compressed air has simultaneously inhibited the freedom of jacket layer 4 and has retracted, through the atmospheric pressure of regulation and control cooling compressed air, through one section basin water-cooling again, final jacket layer 4 is stereotyped for the tubulose of rounding, the diameter and the rounding degree of optical cable obtain accurate control. The temperature of cooling compressed air is roughly the same with the temperature of cooling water in the basin, avoids cooling compressed air and the temperature difference of cooling water in the basin too big, leads to the inconsistent flaw that produces of restrictive coating 4 and the 3 surface cooling rate of recognition body.
Example 5
The embodiment of the invention provides a preparation method of an identification optical cable based on optical signals, which comprises the following steps:
step 101, the identification body 3 is made of a light-transmitting material, the light transmittance of the identification body 3 is greater than 85%, and the light refractive index of the identification body 3 is greater than the light refractive index of the inner sheath layer 42 and the outer sheath layer 41. The greater the light transmittance of the recognition object 3, the smaller the attenuation of the visible ray transmitted within the recognition object 3, and thus the longer the transmission distance. The optical refractive index of the recognition member 3 is greater than the optical refractive indexes of the inner sheath layer 42 and the outer sheath layer 41, so that the visible light rays form total reflection between the recognition member 3 and the inner sheath layer 42 and the outer sheath layer 41, and the larger the difference between the optical refractive indexes of the recognition member 3 and the inner sheath layer 42 and the outer sheath layer 41 is, the stronger the ability of the end surface to receive visible light rays is.
102, arranging an identification body extrusion flow channel, an inner sheath layer extrusion flow channel and an outer sheath layer extrusion flow channel in a machine head of an extruder; the identification body extrusion flow channel is used for extruding the identification body 3, the inner sheath layer extrusion flow channel is used for extruding the inner sheath layer 42, and the outer sheath layer extrusion flow channel is used for extruding the outer sheath layer 41.
Step 103, after the optical unit 1 and the reinforcement 2 are synchronously output from the extruder, the extruder synchronously extrudes the inner sheath layer 42, the recognition body 3 and the outer sheath layer 41 from inside to outside, wherein the inner sheath layer 42 is coated on the outer surface of the reinforcement 2, the recognition body 3 is coated on the outer surface of the inner sheath layer 42, and the outer sheath layer 41 is coated on the outer surface of the recognition body 3.
And step 104, opening a cooling air pipe in the machine head, introducing cooling compressed air into the cooling air pipe, and injecting the cooling compressed air along the inner wall of the inner sheath layer 42 to enable the inner pressure of the inner sheath layer 42 to be larger than the outer pressure. After the plastic melt of the inner sheath layer 42, the identifier 3 and the outer sheath layer 41 is extruded, the plastic melt may sag and deform due to gravity, so that the outer sheath 4 has an oval shape, and the out-of-roundness exceeds the specification requirement. The cooling air pipe is added in the extruder by adopting the cooling compressed air sizing technology, the cooling air pipe is connected with the cooling compressed air, the cooling compressed air is injected along the inner wall of the inner sheath layer 42 after the plastic melts of the inner sheath layer 42, the recognition body 3 and the outer sheath layer 41 are extruded, the inner pressure of the inner sheath layer 42 is higher than the outer pressure, and therefore the inner sheath layer 42, the recognition body 3 and the outer sheath layer 41 can form a circular state.
And 105, sending the inner sheath layer 42, the identification body 3 and the outer sheath layer 41 extruded from the extruder into a water tank for cooling, and cooling and shaping the inner sheath layer 42, the identification body 3 and the outer sheath layer 41. Inner sheath layer 42, the discernment body 3 and outer sheath layer 41 get into the basin cooling, the cooling of inner sheath layer 42 inner wall has been accelerated in the injection of cooling compressed air, the cooling water in the basin has accelerated the cooling of outer sheath layer 41 outer wall, the atmospheric pressure effect of cooling compressed air has simultaneously restrained inner sheath layer 42 and outer sheath layer 41 and has freely retracted, through the atmospheric pressure of regulation and control cooling compressed air, through a section basin water-cooling again, final outer sheath layer 41 is stereotyped for the tubulose of rounding, the diameter and the roundness of optical cable obtain accurate control. The temperature of the cooling compressed air is approximately the same as that of the cooling water in the water tank, so that the phenomenon that the temperature difference between the cooling compressed air and the cooling water in the water tank is too large, and the defects are generated due to the fact that the cooling speeds of the surfaces of the outer sheath layer 41 and the inner sheath layer 42 are inconsistent is avoided.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention, provided they are within the scope of the claims of the present invention and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (6)
1. An optical signal-based identification cable, comprising:
an optical unit (1) for optical cable communication transmission;
the reinforcing piece (2) covers the outer surface of the light unit (1);
the sheath layer (4) is coated on the outer surface of the reinforcing piece (2), and the sheath layer (4) is used for protecting the optical unit;
the identification body (3) is embedded in the sheath layer (4), the identification body (3) is used for transmitting visible light, colored single-wavelength visible light is injected into the end part of the identification body (3), and a visible light leakage light band is formed on the surface of the sheath layer (4);
restrictive coating (4) include oversheath layer (41) and inner sheath layer (42), identification body (3) are transparent solid layer structure, inner sheath layer (42) cladding is at reinforcement (2) surface, identification body (3) cladding is at inner sheath layer (42) surface, oversheath layer (41) cladding is at identification body (3) surface.
2. An optical signal-based identification cable according to claim 1, wherein:
the identification body (3) is made of a light-transmitting material, the light transmittance of the identification body (3) is greater than 85%, and the light refractive index of the identification body (3) is greater than that of the sheath layer (4).
3. An optical signal-based identification cable according to claim 2, wherein:
the material of the recognition body (3) is as follows: any one or more of transparent polyvinyl chloride, polyethylene, thermoplastic polyurethane elastomer, nylon elastomer or polymethyl methacrylate.
4. An optical signal-based identification cable according to claim 2, wherein:
the sheath layer (4) is made of the following materials: any one or more of polyvinyl chloride, flame retardant polyolefin, thermoplastic polyurethane elastomer, nylon elastomer or polystyrene.
5. A method for preparing an optical signal-based identification cable according to any one of claims 1 to 4, comprising the steps of:
the identification body (3) is made of a light-transmitting material, the light transmittance of the identification body (3) is greater than 85%, and the light refractive index of the identification body (3) is greater than that of the inner sheath layer (42) and the outer sheath layer (41);
an identifier extrusion flow channel, an inner sheath layer extrusion flow channel and an outer sheath layer extrusion flow channel are arranged in a machine head of the extruder;
after the optical unit (1) and the reinforcement (2) are synchronously output from the extruder, the extruder synchronously extrudes an inner sheath layer (42), an identification body (3) and an outer sheath layer (41) from inside to outside, wherein the inner sheath layer (42) is coated on the outer surface of the reinforcement (2);
opening a cooling air pipe in the machine head, introducing cooling compressed air into the cooling air pipe, and injecting the cooling compressed air along the inner wall of the inner sheath layer (42) to enable the inner pressure of the inner sheath layer (42) to be larger than the outer pressure;
and (3) sending the inner sheath layer (42), the identification body (3) and the outer sheath layer (41) extruded from the extruder into a water tank for cooling, and cooling and shaping the inner sheath layer (42), the identification body (3) and the outer sheath layer (41).
6. The method for preparing an optical signal-based identification cable according to claim 5, wherein:
the temperature of the cooling compressed air is the same as the temperature of the cooling water in the water tank.
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| US6347172B1 (en) * | 2000-06-28 | 2002-02-12 | Alcatel | Cable having side-emitting fiber under transparent or translucent cable jacket |
| JP2003015002A (en) * | 2001-07-04 | 2003-01-15 | Fujikura Ltd | Manufacture of sz slot for optical cable |
| CN103384589A (en) * | 2010-12-30 | 2013-11-06 | 陶氏环球技术有限责任公司 | Die assembly with cooled die land |
| CN104169771A (en) * | 2012-02-13 | 2014-11-26 | 康宁光电通信有限责任公司 | Visual tracer system for fiber optic cable |
| CN107728273A (en) * | 2015-04-05 | 2018-02-23 | 沈群华 | Luminous optical cable, luminous cable and preparation method thereof |
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