CN114300192A - Low crosstalk framework type photoelectric hybrid cable - Google Patents
Low crosstalk framework type photoelectric hybrid cable Download PDFInfo
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- CN114300192A CN114300192A CN202111414159.4A CN202111414159A CN114300192A CN 114300192 A CN114300192 A CN 114300192A CN 202111414159 A CN202111414159 A CN 202111414159A CN 114300192 A CN114300192 A CN 114300192A
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- 230000003287 optical effect Effects 0.000 claims abstract description 40
- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 239000013307 optical fiber Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229920006231 aramid fiber Polymers 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- 238000009941 weaving Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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Abstract
The invention provides a low crosstalk framework type photoelectric hybrid cable, which comprises a cable core and an outer sheath arranged outside the cable core, wherein a plurality of data communication units are embedded in the outer sheath; the cable core comprises a framework and optical communication units uniformly distributed on the periphery of the framework, the optical communication units are embedded in the outer surface of the framework, and the optical communication units are fixed by a belting layer coated on the outer side of the framework; the central reinforcement is arranged at the center of the framework, the plurality of peripheral reinforcements are further arranged in the outer sheath, the data communication units are uniformly distributed and arranged by taking the framework center as the center, the peripheral reinforcements are uniformly distributed and arranged by taking the framework center as the center, and the distance from the outer edge of each peripheral reinforcement to the surface of the outer sheath is smaller than that from the outer edge of each data communication unit to the surface of the outer sheath. The photoelectric hybrid cable provided by the invention has reasonable structural design, the optical communication unit is embedded into the framework, the data communication unit is embedded into the outer sheath, the data communication unit and the optical communication unit have good structural stability and small mutual interference, and the crosstalk phenomenon is effectively reduced.
Description
Technical Field
The invention belongs to the technical field of optical cable design and manufacture, and particularly relates to a low crosstalk framework type photoelectric hybrid cable.
Background
The phenomenon that signals in a line (main serial loop) are serial to other lines (to be serial loops) due to coupling in a cable crosstalk cable. In a symmetric cable, which can be divided into near-end crosstalk (NEXT) and far-end crosstalk (FEXT) according to the positions of the pair of influence lines, the mutual interference of loops is caused by the existence of transverse electromagnetic fields, and the electromagnetic fields generate interference currents on adjacent loops. The crosstalk is classified according to the location of the main and the secondary serial circuits, and in the secondary serial circuit, the crosstalk received at the same end as the signal source of the main serial circuit is called near-end crosstalk, and the crosstalk received at the other end is called far-end crosstalk. As the frequency increases, both electrical and magnetic coupling increase, and near-end crosstalk is generally more severe at high frequencies than far-end crosstalk. In the existing optical-electrical hybrid cable, the problem of mutual interference between the optical communication unit and the data communication unit exists, and the use performance of the cable is affected, so that the existing cable structure needs to be optimized and improved.
Disclosure of Invention
In view of the above, the present invention provides a low crosstalk framework type optical/electrical hybrid cable to overcome the drawbacks of the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a low crosstalk framework type photoelectric hybrid cable comprises a cable core and an outer sheath arranged outside the cable core, wherein a plurality of data communication units are embedded in the outer sheath; the cable core comprises a framework and optical communication units uniformly distributed on the periphery of the framework, and the optical communication units are embedded in the outer surface of the framework; the optical communication unit comprises an optical fiber ribbon and a protective layer coated on the outer side of the optical fiber ribbon; the center of the framework is provided with a central reinforcing piece, and all the data communication units are uniformly distributed by taking the central reinforcing piece as the center; the data communication units are arranged in a staggered manner with the optical communication units.
Furthermore, a plurality of peripheral reinforcing pieces are further arranged in the outer sheath, the peripheral reinforcing pieces are uniformly distributed by taking the central reinforcing piece as a center, and the distance from the outer edge of each peripheral reinforcing piece to the surface of the outer sheath is smaller than the distance from the outer edge of the data communication unit to the surface of the outer sheath.
Furthermore, 4 groups of data communication units are uniformly distributed.
Furthermore, the outer sheath is made of thermoplastic polyurethane rubber, so that the tensile property, the compression resistance and the impact resistance of the cable are excellent.
Furthermore, the belting layer is formed by wrapping or longitudinally wrapping high-temperature-resistant mica tapes or mineral composite tapes, so that the cable is prevented from further flame retarding in fire occasions, the electrical properties of the conductor and the insulating layer are greatly protected, and the temperature-resistant and fireproof properties of the cable are improved.
Furthermore, the central reinforcing part is made of glass fiber, polyester aramid fiber yarn or steel wire.
Furthermore, the peripheral reinforcing part is made of glass fiber or polyester aramid fiber.
Furthermore, a shielding layer is coated outside the belting layer.
Furthermore, the shielding layer is formed by weaving a tinned copper wire.
Compared with the prior art, the invention has the following advantages:
the photoelectric hybrid cable provided by the invention has reasonable structural design, the optical communication unit is embedded into the framework, the data communication unit is embedded into the outer sheath, the data communication unit and the optical communication unit have good structural stability and small mutual interference, and the crosstalk phenomenon is effectively reduced. When the peripheral reinforcing piece is arranged in the outer sheath, the peripheral reinforcing piece can bear corresponding load action before the data communication unit when being extruded or impacted by external force, so that the peripheral reinforcing piece can effectively form reliable protection for the data communication unit.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of an embodiment of the present invention with a peripheral stiffener;
FIG. 3 is a schematic view of an embodiment of the present invention with a crosstalk prevention component;
FIG. 4 is a schematic diagram of a crosstalk prevention component in an embodiment of the present invention;
FIG. 5 is a schematic diagram of an estimated groove portion in an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
A low crosstalk framework type photoelectric hybrid cable is shown in figures 1 to 3 and comprises a cable core and an outer sheath 1 outside the cable core, wherein a plurality of groups of data communication units 2 are embedded in the outer sheath; the cable core comprises a framework 3 and optical communication units 4 uniformly distributed on the periphery of the framework, wherein the optical communication units are embedded in the outer surface of the framework. Preferably, each optical communication unit is fixed around the package by a tape layer 5 coated outside the framework, that is, the optical communication unit is embedded into the groove 12 of the framework and coated by the tape layer to form a cable core structure. The data communication units are arranged in a staggered manner with the optical communication units. For example, the data communication units are uniformly distributed with 4 groups.
In order to improve the shielding performance, an inner shield layer 8 may be coated outside the above-mentioned band layer. By way of example, the inner shielding layer is a tinned copper wire braided shielding layer. In a further improved scheme, the optical communication units comprise optical fiber ribbons and protective layers coated on the outer sides of the optical fiber ribbons, in an optional embodiment, the protective layers are copper wire braided shielding layers, and such a structural design enables each optical communication unit to achieve independent self-shielding performance and reduce crosstalk.
Aiming at the problem of poor stability of each part of the optical communication unit and the data communication unit in the prior art, the optical communication unit is embedded into the groove of the framework and is tightly coated by the band layer, the stability is good, and the interference between the optical communication unit and the data communication unit is small. In a preferred scheme, the optical communication units and the data communication units are arranged in a staggered mode, and the grooves in the framework are not aligned with the data communication units on the periphery of the cable core, namely the data communication units and the grooves are arranged in a staggered mode, so that mutual interference between the optical communication units and the data communication units is further avoided.
The framework center is provided with a central reinforcement 6, the data communication units are uniformly distributed and arranged by taking the framework center as the center, in an optional embodiment, a plurality of peripheral reinforcements 7 are further arranged in the outer sheath, the peripheral reinforcements are uniformly distributed and arranged by taking the framework center as the center, and the distance from the outer edge of each peripheral reinforcement to the surface of the outer sheath is smaller than that from the outer edge of each data communication unit to the surface of the outer sheath, namely, the data communication units are within the protection range of the peripheral reinforcements. Typically, the central reinforcement is made of fiberglass, aramid or steel wire. The peripheral reinforcing part is made of glass fiber or polyester aramid fiber.
The outer sheath is made of thermoplastic polyurethane rubber, and the tensile property, the compression resistance and the impact resistance of the cable are excellent. The belting layer is formed by wrapping or longitudinally wrapping high-temperature-resistant mica tapes or mineral composite tapes, so that the cable is prevented from further flame delay in fire occasions, the electrical properties of the conductor and the insulating layer are greatly protected, and the temperature-resistant and fireproof properties of the cable are improved.
In an alternative embodiment, as shown in fig. 3, a plurality of crosstalk-proof components 9 are arranged outside the inner shielding layer, the number of crosstalk-proof components is equal to the number of data communication units, and the crosstalk-proof components and the data communication units are arranged in a staggered manner, that is, a crosstalk-proof component is arranged between two data communication units, and the crosstalk-proof component comprises a support body 10 and a crosstalk-proof shielding layer 11 outside the support body.
By way of example, as shown in fig. 4, the support body is substantially triangular in cross-section, comprising a connection surface 14 on the bottom side and working surfaces on both sides. Each support body is arranged between a data communication unit and an optical communication unit, an outer working surface 15 on one side of the support body close to the data communication unit is designed into an inclined surface, and an inner working surface 16 on one side close to the optical communication unit (framework groove) forms an included angle of less than or equal to 90 degrees with a groove bottom 17 of the framework groove. The interference current spread of the optical communication unit can be reduced, and the interference to the data communication unit can be reduced.
The supporter is fixed in on the outer periphery of internal shield layer, for better and the laminating of internal shield layer surface, connects the face and can be the arc for stable in structure between supporter and internal shield layer outer wall. Of course, those skilled in the art can also design the supporting body and the inner shielding layer as an integral structure, and the description is omitted here. The included angle between the two working faces of the two adjacent supporting bodies is an obtuse angle, that is, the included angle between the outer working faces of the two adjacent crosstalk prevention components is an obtuse angle, so that the interference current of the data communication unit to the optical communication unit can be shielded to the greatest extent.
In an alternative embodiment, as shown in fig. 5, the groove for placing the optical communication unit on the outer circumferential surface of the frame is provided with a closing structure 13, that is, the opening of the groove is narrowed, so that an included angle between the side wall 18 of the groove and the bottom of the groove is an acute angle, and the inner wall of the groove is coated with a shielding coating or is provided with a metal shielding layer, so that the data communication unit deviates from the groove in which the optical communication unit is located, and even if a part of interference current is emitted to the outside, the influence on the data communication unit is very small. Therefore, by designing the groove with the closing-in structure, the influence of interference current of the optical communication unit on peripheral data communication units can be reduced to the maximum extent, the problem of serious crosstalk of the existing photoelectric hybrid cable is further solved in an optimized mode, and the service performance of the cable is improved. And, in combination with the crosstalk-proof component, the inner working surfaces of two adjacent supporting bodies form a crosstalk-proof extension channel, and the electromagnetism or current generated by the optical communication unit in the groove can not be diffused, so that the crosstalk phenomenon can be greatly reduced.
The photoelectric hybrid cable provided by the invention has reasonable structural design, the optical communication unit is embedded into the framework, the data communication unit is embedded into the outer sheath, the data communication unit and the optical communication unit have good structural stability and small mutual interference, and the crosstalk phenomenon is effectively reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (8)
1. A low crosstalk skeleton-type photoelectric hybrid cable is characterized in that: the cable comprises a cable core and an outer sheath outside the cable core, wherein a plurality of data communication units are embedded in the outer sheath; the cable core comprises a framework and a plurality of groups of optical communication units uniformly distributed on the periphery of the framework; each optical communication unit is embedded in the outer surface of the framework; the data communication unit and the optical communication unit are arranged in a staggered mode; the optical communication unit comprises an optical fiber ribbon and a protective layer coated on the outer side of the optical fiber ribbon; the center of the framework is provided with a central reinforcement, and the data communication units are uniformly distributed by taking the center of the framework as the center.
2. The low crosstalk slotted hybrid optical-electrical cable of claim 1, wherein: 4 groups of data communication units are uniformly distributed.
3. The low crosstalk slotted hybrid optical-electrical cable of claim 1, wherein: the outer sheath is made of thermoplastic polyurethane rubber.
4. The low crosstalk slotted hybrid optical-electrical cable of claim 1, wherein: the protective layer is a copper wire braided shielding layer.
5. The low crosstalk slotted hybrid optical-electrical cable of claim 1, wherein: the central reinforcing part is made of glass fiber, polyester aramid fiber yarn or steel wire.
6. The low crosstalk slotted hybrid optical-electrical cable of claim 1, wherein: the peripheral reinforcing part is made of glass fiber or polyester aramid fiber.
7. The low crosstalk slotted hybrid optical-electrical cable of claim 1, wherein: and a shielding layer is coated on the outer side of the belting layer.
8. The low crosstalk slotted hybrid optical-electrical cable of claim 7, wherein: the shielding layer is formed by weaving a tinned copper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111414159.4A CN114300192B (en) | 2021-11-25 | 2021-11-25 | Low-crosstalk framework type photoelectric hybrid cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111414159.4A CN114300192B (en) | 2021-11-25 | 2021-11-25 | Low-crosstalk framework type photoelectric hybrid cable |
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| Publication Number | Publication Date |
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| CN114300192A true CN114300192A (en) | 2022-04-08 |
| CN114300192B CN114300192B (en) | 2023-11-03 |
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| CN202111414159.4A Active CN114300192B (en) | 2021-11-25 | 2021-11-25 | Low-crosstalk framework type photoelectric hybrid cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203054302U (en) * | 2012-12-13 | 2013-07-10 | 叶梦佳 | Power optical cable |
| CN103531299A (en) * | 2013-10-08 | 2014-01-22 | 中利科技集团股份有限公司 | Photoelectric hybrid cable with optical fiber ribbon |
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| CN104730667A (en) * | 2015-04-23 | 2015-06-24 | 龚利芬 | Skeleton type optical cable and manufacturing method thereof |
| CN105589150A (en) * | 2015-12-22 | 2016-05-18 | 长飞光纤光缆股份有限公司 | Hybrid optical fiber with large fiber core number |
| CN207182967U (en) * | 2017-07-26 | 2018-04-03 | 黄石昌达线缆有限公司 | A kind of high-strength anti-flaming motor lead |
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| CN208805600U (en) * | 2018-09-29 | 2019-04-30 | 东莞市汉都电子有限公司 | A kind of medical alarm indexed optical fiber wire and cable connector |
| CN211879052U (en) * | 2020-03-18 | 2020-11-06 | 合肥兴联通讯有限公司 | Anti-interference and anti-damage photoelectric composite cable for miniature 5G base station |
| CN213123841U (en) * | 2020-08-25 | 2021-05-04 | 宏安集团有限公司 | Skeleton type photoelectric composite cable |
-
2021
- 2021-11-25 CN CN202111414159.4A patent/CN114300192B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203054302U (en) * | 2012-12-13 | 2013-07-10 | 叶梦佳 | Power optical cable |
| CN104008815A (en) * | 2013-02-27 | 2014-08-27 | 尼克桑斯公司 | Discontinuous shielding tapes for data communications cable |
| CN103531299A (en) * | 2013-10-08 | 2014-01-22 | 中利科技集团股份有限公司 | Photoelectric hybrid cable with optical fiber ribbon |
| CN204178025U (en) * | 2014-10-15 | 2015-02-25 | 广东亨通光电科技有限公司 | Reinforced pavement microgroove optical cable |
| CN104730667A (en) * | 2015-04-23 | 2015-06-24 | 龚利芬 | Skeleton type optical cable and manufacturing method thereof |
| CN105589150A (en) * | 2015-12-22 | 2016-05-18 | 长飞光纤光缆股份有限公司 | Hybrid optical fiber with large fiber core number |
| CN207182967U (en) * | 2017-07-26 | 2018-04-03 | 黄石昌达线缆有限公司 | A kind of high-strength anti-flaming motor lead |
| CN108320855A (en) * | 2017-12-13 | 2018-07-24 | 江苏兴达知识产权服务有限公司 | A kind of offshore drilling platforms high-strength light composite cable |
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| CN211879052U (en) * | 2020-03-18 | 2020-11-06 | 合肥兴联通讯有限公司 | Anti-interference and anti-damage photoelectric composite cable for miniature 5G base station |
| CN213123841U (en) * | 2020-08-25 | 2021-05-04 | 宏安集团有限公司 | Skeleton type photoelectric composite cable |
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