CN107544119B - Detectable optical cable and communication system - Google Patents
Detectable optical cable and communication system Download PDFInfo
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- CN107544119B CN107544119B CN201710786982.5A CN201710786982A CN107544119B CN 107544119 B CN107544119 B CN 107544119B CN 201710786982 A CN201710786982 A CN 201710786982A CN 107544119 B CN107544119 B CN 107544119B
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- optical cable
- detectable optical
- sheath
- metal structure
- loose tube
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- 230000003287 optical effect Effects 0.000 title claims abstract description 81
- 238000004891 communication Methods 0.000 title claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 45
- 239000002184 metal Substances 0.000 claims abstract description 45
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 35
- 239000013307 optical fiber Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000003351 stiffener Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000221535 Pucciniales Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
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- 229920000642 polymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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Abstract
The invention provides a detectable optical cable and a communication system, and relates to the technical field of optical cable detection. Wherein the detectable optical cable comprises: a sheath; the central reinforcing part is arranged in the sheath along the extension direction of the sheath, a metal structure is arranged in the central reinforcing part along the extension direction of the central reinforcing part, and the metal structure can induce electromagnetic waves to generate induced current; the loose tube is arranged between the central reinforcing piece and the sheath along the extension direction of the sheath, and an optical fiber is arranged in the loose tube along the extension direction of the loose tube. Through the arrangement of the metal structure, the problem that effective positioning is difficult to realize after a large number of optical cables are arranged in a centralized mode in the prior art can be solved.
Description
Technical Field
The invention relates to the technical field of optical cable detection, in particular to a detectable optical cable and a communication system.
Background
As the demand for information continues to increase, optical fiber communication is widely used due to its advantages of high speed, high transmission quality, and the like. There are various ways to improve the speed and quality of communication, for example, the quality of the optical fiber in the optical cable may be improved, or the number of optical cables may be increased. Since the quality of optical fibers in optical cables is subject to a number of factors, it is common to increase the speed and quality of communications by increasing the number of optical cables.
The inventor finds that, in the prior art, when the quality and the speed of communication are improved by increasing the number of the optical cables, if one or a part of the optical cables fails, a maintenance worker cannot directly and effectively locate the failed optical cable in the optical cables with a large number, and further the failure is difficult to timely remove.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a detectable optical cable and a communication system, so as to solve the problem in the prior art that effective positioning is difficult to achieve due to centralized arrangement of a large number of optical cables.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
a detectable optical cable comprising:
a sheath;
the central reinforcing part is arranged in the sheath along the extension direction of the sheath, a metal structure is arranged in the central reinforcing part along the extension direction of the central reinforcing part, and the metal structure can induce electromagnetic waves to generate induced current; and
the loose tube is arranged between the central reinforcing piece and the sheath along the extension direction of the sheath, and an optical fiber is arranged in the loose tube along the extension direction of the loose tube.
In a preferred option of the embodiment of the present invention, in the detectable optical cable, the metal structure is a steel wire.
In a preferred alternative of the embodiment of the present invention, in the above detectable optical cable, the outer surface of the steel wire is coated with a copper plating layer.
In a preferred option of the embodiment of the present invention, in the above detectable optical cable, the size of the metal structure is greater than or equal to 0.41mm and less than or equal to 0.43 mm.
In a preferred option of the embodiment of the present invention, in the above detectable optical cable, a center-to-center distance between the metal structure and the center reinforcing member is less than or equal to 0.5 mm.
In a preferred option of the embodiment of the present invention, in the above detectable optical cable, a first water-blocking substance is further filled between the loose tube and the optical fiber along an extending direction of the loose tube.
In a preferred option of the embodiment of the present invention, in the above detectable optical cable, the detectable optical cable further includes a filling string disposed between the central strength member and the sheath along an extending direction of the sheath.
In a preferred option of the embodiment of the present invention, in the above detectable optical cable, a second water-blocking substance is further filled between the central strength member and the loose tube or the filling rope along the extending direction of the sheath.
In a preferred option of the embodiment of the present invention, in the detectable optical cable, the sheath is made of polyethylene material, the central reinforcing member is made of glass fiber reinforced material, the first water-blocking substance is water-blocking fiber paste, and the second water-blocking substance is water-blocking yarn.
On the basis, the embodiment of the invention also provides a communication system which comprises a plurality of communication devices and the detectable optical cable, wherein the communication devices are in communication connection through the detectable optical cable.
The invention provides a detectable optical cable and a communication system, wherein a metal structure is arranged in a central reinforcing piece, an induction magnetic field is used for generating induction current and transmitting the induction current along the metal structure, detection equipment can judge the wiring mode of the corresponding detectable optical cable according to the magnetic field generated by the induction current flowing through the metal structure, the problem that effective positioning is difficult to achieve after a large number of optical cables are arranged in a centralized mode in the prior art is further solved, and the practicability and reliability of the detectable optical cable and the communication system are greatly improved.
Further, through set up the copper plate at the surface of steel wire, when guaranteeing that the manufacturing cost of observable optical cable is lower, can also avoid leading to life to reduce and lead to the great problem of induced-current loss because of the conducting power of steel wire is weak because of the rust of steel wire, and then guarantee effectively the observable optical cable has higher location effect, has further improved observable optical cable and communication system's practicality.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic cross-sectional view of a detectable optical cable according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a central stiffener according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of a metal structure according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of a loose tube according to an embodiment of the present invention.
FIG. 5 is another schematic cross-sectional view of a detectable optical cable provided by an embodiment of the present invention.
FIG. 6 is another schematic cross-sectional view of a detectable optical cable provided by an embodiment of the present invention.
Icon: 100-a detectable optical cable; 110-a sheath; 120-a central stiffener; 130-loose tube; 140-metal structure; 142-a steel wire; 144-copper plating; 150-an optical fiber; 160-a first water-blocking substance; 170-filling rope; 180-a second water-blocking substance.
Detailed Description
In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. In the above description of the present invention, it should be noted that the terms "first", "second", and the like are used only for distinguishing the description, and are only for convenience of describing the present invention and simplifying the description, and cannot be construed as indicating or implying relative importance.
As shown in fig. 1, embodiments of the present invention provide a detectable optical cable 100 for connecting a plurality of communication devices to achieve high-speed, high-quality information transfer between the communication devices.
Further, in this embodiment, the detectable optical cable 100 includes a jacket 110, a central strength member 120, and a loose tube 130. The central reinforcing member 120 is disposed inside the sheath 110 and is disposed along the extending direction of the sheath 110. The loose tube 130 is disposed inside the sheath 110 and between the central stiffener 120 and the sheath 110, and the loose tube 130 is disposed along an extending direction of the sheath 110.
Optionally, the material of the sheath 110 is not limited, and may include, but is not limited to, metal, plastic, and the like, for example. In this embodiment, the sheath 110 is made of polyethylene material, taking into consideration the quality, reliability, and the like of the sheath 110.
Alternatively, the specific shape of the cross section of the sheath 110 is not limited, and may be circular, square, or irregular. In the present embodiment, the sheath 110 has a circular cross-section, taking into consideration factors such as manufacturing processes and convenience of use.
Alternatively, the specific size of the sheath 110 is not limited as long as the central reinforcing member 120 and the loose tube 130 can be accommodated, and may be set according to the central reinforcing member 120, the loose tube 130 and the relative position relationship therebetween.
Optionally, the specific location of the central reinforcement member 120 in the sheath 110 is not limited, and may be any location, or may be a regular location. In this embodiment, the central reinforcing member 120 is disposed at the center of the sheath 110, that is, the center of the central reinforcing member 120 coincides with the center of the sheath 110, or the center-to-center distance between the central reinforcing member 120 and the sheath 110 is smaller than a predetermined distance.
Alternatively, the specific material of the central reinforcing member 120 is not limited, and may be either a metal material or a plastic material. In the present embodiment, the central reinforcing member 120 is made of glass fiber reinforced material, considering the manufacturing cost, quality, safety and reliability.
Alternatively, the specific shape of the cross section of the central reinforcing member 120 is not limited, and may be a circular shape, a square shape, or an irregular shape. In the present embodiment, the cross-section of the central reinforcing member 120 is circular, considering the manufacturing process and the convenience of use.
Referring to fig. 2, in order to facilitate the positioning of the detectable optical cable 100 by a detection device when a fault occurs, in the present embodiment, a metal structure 140 is disposed in the central strength member 120. The metal structure 140 is disposed along the extending direction of the central reinforcing member 120, and can induce a magnetic field to generate an induced current, which can be transmitted along the extending direction of the metal structure 140.
By arranging the metal structure 140 in the central reinforcement member 120, an induced current is generated by an induced magnetic field and transmitted along the metal structure 140, so that the detection equipment can judge the wiring mode of the corresponding detectable optical cable 100 according to the magnetic field generated by the induced current flowing through the metal structure 140, thereby solving the problem that the optical cables with a large number are difficult to effectively position after being intensively arranged in the prior art, and greatly improving the practicability and reliability of the detectable optical cable 100.
Optionally, the relative position relationship between the metal structure 140 and the central reinforcing member 120 after the metal structure is disposed inside the central reinforcing member 120 is not limited, and may be arbitrarily disposed or disposed according to a certain rule. In this embodiment, in order to avoid the problem that the metal structure 140 is exposed due to the damage of the metal structure 140 to the central stiffener 120, the metal structure 140 and the central stiffener 120 are disposed at an interval.
Alternatively, the specific location of the metal structure 140 is not limited as long as there is a space from the central reinforcing member 120. In this embodiment, to ensure that the magnetic field generated by the current flowing through the metal structure 140 has the same strength at various angles, so as to avoid the problem of inaccurate positioning, the metal structure 140 is disposed at the middle position of the central reinforcing member 120, that is, the center of the metal structure 140 coincides with the center of the central reinforcing member 120, or the center-to-center distance between the metal structure 140 and the central reinforcing member 120 is smaller than a predetermined distance. In this embodiment, the predetermined distance is less than or equal to 0.5 mm.
Alternatively, the material of the metal structure 140 is not limited as long as it can induce electromagnetic waves to generate induced currents, and may be a metal or an alloy material such as iron, copper, aluminum, or the like, for example. Referring to fig. 3, in this embodiment, considering the manufacturing cost, quality and the like, the metal structure 140 includes a steel wire 142.
Further, in order to effectively improve the corrosion resistance and the electrical conductivity of the metal structure 140, in this embodiment, the outer surface of the steel wire 142 is further coated with a copper plating layer 144. Because copper compares with steel (iron), has better conducting capacity and corrosion resisting ability, through setting up copper plate 144, when guaranteeing that manufacturing cost is lower, can also avoid leading to life to reduce and leading to the great problem of induced-current loss because of the conducting capacity weak of steel wire 142 because of steel wire 142 rusts, and then guarantee effectively that detectable optical cable 100 has higher location effect.
Alternatively, the specific size of the metal structure 140 is not limited, and may be set according to the conductive capability and the manufacturing cost in practical applications. In the present embodiment, the cross section of the metal structure 140 is circular, and the diameter is greater than or equal to 0.41mm and less than or equal to 0.43 mm.
Referring to fig. 4, in the present embodiment, an optical fiber 150 for transmitting an optical signal is disposed in the loose tube 130, and the optical fiber 150 is disposed along an extending direction of the loose tube 130. In order to improve the resistance of the optical fiber 150 to the intrusion of moisture and the buffering capacity against external force, in this embodiment, a first water blocking substance 160 is further filled between the loose tube 130 and the optical fiber 150 in the extending direction of the loose tube 130.
Alternatively, the specific type of the first water-blocking substance 160 is not limited as long as it has a certain resistance to moisture invasion, and may be, for example, but not limited to, water-blocking fiber paste, water-blocking yarn, etc. In this embodiment, the first water-blocking substance 160 is a water-blocking fiber paste.
Optionally, the number of the loose tubes 130 is not limited, and may be one or more. In this embodiment, the number of loose tubes 130 is plural to improve the ability of the detectable optical cable 100 to transmit information. The specific arrangement of the plurality of loose tubes 130 is not limited, and may be any arrangement, or may be arranged according to a certain rule. In this embodiment, the loose tubes 130 are uniformly distributed in the peripheral area of the central reinforcing member 120.
Referring to FIG. 5, the number of optical fibers 150 required in the detectable optical cable 100 may vary, i.e., the number of loose tubes 130 may vary, depending on the requirements. If the number of the loose tubes 130 is small, the tightness between the loose tubes 130 and the central strength member 120 is low, which may cause the core structure of the detectable optical cable 100 to be unstable, in this embodiment, the detectable optical cable 100 may further include a filling string 170, and the filling string 170 is disposed between the central strength member 120 and the sheath 110 along the extending direction of the sheath 110.
In this embodiment, the filling string 170 and the loose tube 130 are fitted to each other around the central strength member 120 to stabilize the internal structure of the detectable optical cable 100, wherein the cross-section of the loose tube 130 and the filling string 170 is circular, and the diameter of the filling string 170 is the same as the diameter of the loose tube 130.
Optionally, the number of the filling string 170 is not limited, and may be one or more, and may be set according to the number of the loose tubes 130, so as to ensure the stability of the internal structure of the detectable optical cable 100. In this embodiment, the filling string 170 is plural and is uniformly distributed with each loose tube 130 in the surrounding area of the central reinforcing member 120.
Referring to fig. 6, in order to further improve the moisture intrusion resistance of the detectable optical cable 100 and improve the service life of the optical fiber 150, in this embodiment, a second water-blocking substance 180 is further filled between the central strength member 120 and the loose tube 130 or the filling string 170 along the extending direction of the sheath 110.
Alternatively, the specific type of the second water-blocking substance 180 is not limited as long as it has a certain resistance to moisture invasion, and may be, for example, but not limited to, water-blocking fiber paste, water-blocking yarn, etc. In this embodiment, the second water-blocking substance 180 is a water-blocking yarn.
In this embodiment, by disposing the water-blocking yarn in the detectable optical cable 100, since some polymers in the water-blocking yarn contain a large amount of hydrophilic groups, such as carboxylic acid groups, carboxylic acid-based salts, hydroxyl groups, ether groups, etc., when the water-blocking yarn contacts water, the cross-linked polymer is rapidly opened to form a net shape by the hydrophilic groups, so that the water is covered in the net, and the volume of the water-blocking yarn rapidly expands to form gel, filling the gap inside the detectable optical cable 100, thereby achieving the purpose of actively blocking water.
The present embodiment also provides a communication system including a plurality of communication apparatuses and the above-described detectable optical cable 100, the plurality of communication apparatuses being communicatively connected through the detectable optical cable 100 to achieve high-speed, high-quality transfer of signals.
In view of the fact that the communication system includes the detectable optical cable 100, and therefore has all the technical features of the detectable optical cable 100, the same technical problems can be solved, and the same technical effects can be produced, and in this embodiment, no further description is given, please refer to the foregoing explanation of the detectable optical cable 100.
In summary, according to the detectable optical cable 100 and the communication system provided by the present invention, the metal structure 140 is disposed in the central reinforcement 120 to induce the magnetic field to generate the induced current and transmit the induced current along the metal structure 140, and the detection device can determine the routing manner of the corresponding detectable optical cable 100 according to the magnetic field generated by the induced current flowing through the metal structure 140, so as to solve the problem in the prior art that the optical cables with a large number are difficult to be effectively positioned after being intensively disposed, thereby greatly improving the practicability and reliability of the detectable optical cable 100 and the communication system. Secondly, through set up copper layer 144 at the surface of steel wire 142, when guaranteeing detectable optical cable 100's low in manufacturing cost, can also avoid leading to life to reduce because of the rust of steel wire 142 and leading to the great problem of induced-current loss because of the electric conductivity of steel wire 142 is weak, and then guarantee effectively that detectable optical cable 100 has higher location effect, further improved detectable optical cable 100 and communication system's practicality.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A detectable optical cable, comprising:
a sheath;
the central reinforcing part is arranged in the sheath along the extending direction of the sheath, a metal structure is arranged in the central reinforcing part along the extending direction of the central reinforcing part, the metal structure can induce a magnetic field to generate induction current, and the metal structure and the central reinforcing part are arranged at intervals; and
the loose tube is arranged between the central reinforcing piece and the sheath along the extension direction of the sheath, and an optical fiber is arranged in the loose tube along the extension direction of the loose tube.
2. A detectable optical cable according to claim 1, wherein the metal structure is a steel wire.
3. A detectable optical cable according to claim 2, wherein the outer surface of the steel wire is coated with a copper plating.
4. A detectable optical cable according to any of claims 1-3, wherein the size of the metal structure is greater than or equal to 0.41mm and less than or equal to 0.43 mm.
5. A detectable optical cable according to any of claims 1-3, wherein the center-to-center spacing between the metal structure and the center strength member is less than or equal to 0.5 mm.
6. A detectable optical cable according to any of claims 1-3, wherein a first water-blocking substance is further filled between the loose tube and the optical fiber along the extending direction of the loose tube.
7. A detectable optical cable according to any of claims 6, further comprising a filler cord disposed between the central strength member and the jacket along the direction of elongation of the jacket.
8. A detectable optical cable according to claim 7, wherein a second water-blocking substance is further filled between the central strength member and the loose tube or the filling cord in the extending direction of the sheath.
9. The detectable optical cable of claim 8, wherein the jacket is made of polyethylene material, the central strength member is made of fiberglass reinforced material, the first water-blocking substance is water-blocking fiber paste, and the second water-blocking substance is water-blocking yarn.
10. A communication system comprising a plurality of communication devices communicatively coupled via the detectable optical cable and the detectable optical cable of any of claims 1-9.
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CN201710786982.5A CN107544119B (en) | 2017-09-04 | 2017-09-04 | Detectable optical cable and communication system |
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CN201710786982.5A CN107544119B (en) | 2017-09-04 | 2017-09-04 | Detectable optical cable and communication system |
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CN107544119A CN107544119A (en) | 2018-01-05 |
CN107544119B true CN107544119B (en) | 2020-01-14 |
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CN113126223A (en) * | 2021-04-23 | 2021-07-16 | 广东电网有限责任公司中山供电局 | Pipeline optical cable |
Citations (5)
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WO2008123703A1 (en) * | 2007-04-09 | 2008-10-16 | Fiberpro, Inc. | Identification apparatus of optical cable and identification method |
CN201655420U (en) * | 2010-04-14 | 2010-11-24 | 安徽滨江电缆股份有限公司 | Self-bearing-type overhead photoelectric composite cable |
CN103837900A (en) * | 2013-09-09 | 2014-06-04 | 北京鼎臣超导科技有限公司 | Underground cable locating method and device based on vector magnetic field detection |
CN206339697U (en) * | 2016-11-09 | 2017-07-18 | 通鼎互联信息股份有限公司 | A kind of new air-blowing micro-cable |
CN207586485U (en) * | 2017-09-04 | 2018-07-06 | 江苏亨通光电股份有限公司 | Detectable optical cable and communication system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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IL237178A (en) * | 2014-03-09 | 2016-02-29 | Moshe Cohen Gadol | Electromagnetic radiation detecting system and method |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2008123703A1 (en) * | 2007-04-09 | 2008-10-16 | Fiberpro, Inc. | Identification apparatus of optical cable and identification method |
CN201655420U (en) * | 2010-04-14 | 2010-11-24 | 安徽滨江电缆股份有限公司 | Self-bearing-type overhead photoelectric composite cable |
CN103837900A (en) * | 2013-09-09 | 2014-06-04 | 北京鼎臣超导科技有限公司 | Underground cable locating method and device based on vector magnetic field detection |
CN206339697U (en) * | 2016-11-09 | 2017-07-18 | 通鼎互联信息股份有限公司 | A kind of new air-blowing micro-cable |
CN207586485U (en) * | 2017-09-04 | 2018-07-06 | 江苏亨通光电股份有限公司 | Detectable optical cable and communication system |
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