Optical cable capable of monitoring broken skin position

Abstract

The invention discloses an optical cable capable of monitoring a broken skin position, which can determine the broken skin position through terminal equipment, repair the broken skin position in time, prevent an optical fiber for communication from being discovered after being gnawed, effectively avoid signal interruption and nip in the bud. The cable comprises a cable core part, the cable core part comprises a central reinforcing piece, a plurality of loose tubes and an inner protection layer, the loose tubes are annularly distributed on the outer circumference of the central reinforcing piece in a unidirectional spiral twisting mode, and the inner protection layer wraps the equivalent outer circumference formed by combining the loose tubes; the reinforcing layer part comprises a composite belt layer and a nylon rod wrapping layer which are arranged from inside to outside in the radial direction, the nylon rod wrapping layer is formed by wrapping a single composite nylon rod, and the single composite nylon rod comprises a nylon rod provided with a central cavity and a positioning optical fiber located in the central cavity; and an outer sheath. The periphery of the cable core part is wrapped with the reinforcing layer part, and the periphery of the reinforcing layer part is wrapped with the outer protective layer.

Description

Technical Field

[0001] The invention relates to the technical field of optical cable structures, in particular to an optical cable capable of monitoring a cable breakage position. Background Art

[0002] Optical cables play an important role in information and data transmission in various fields. In the existing optical cable structure, the core part, namely the communication optical fiber, is placed at the cable core, and then covered with an inner sheath, a reinforcement layer and an outer sheath. During use, it is easy to be damaged from the outside to the inside starting from the outer sheath, which is generally caused by mice gnawing. The existing optical cables cannot detect the optical cables being gnawing at the first time. When the optical cables are found to be gnawing, the communication optical fibers of the optical cables are generally damaged, which will cause more serious communication interruption events. For this reason, it is urgent to develop an optical cable that can quickly detect the broken skin position, so as to detect the broken skin position before the mice bite off the core communication optical fibers, and perform subsequent reliable repairs. Summary of the invention

[0003] In view of the above problems, the present invention provides an optical cable capable of monitoring the location of broken skin. The broken skin location can be determined through terminal equipment and repaired in time to prevent the optical fiber used for communication from being discovered after it is broken. Signal interruption can be effectively avoided to prevent problems before they occur.

[0004] An optical cable capable of monitoring a skin-breaking position, characterized in that it comprises: The cable core part includes a central reinforcement member, a plurality of loose tubes, and an inner protective layer. The loose tubes are arranged around the outer circumference of the central reinforcement member in a unidirectional spiral twisted manner, and the inner protective layer is coated on the equivalent outer circumference formed by the combination of the loose tubes; The reinforcement layer includes a composite tape layer and a nylon rod wrapping layer radially arranged from the inside to the outside, wherein the nylon rod wrapping layer is formed by wrapping a single composite nylon rod, wherein the single composite nylon rod includes a nylon rod with a central cavity and a positioning optical fiber located in the central cavity; and an outer sheath; The outer circumference of the cable core part is wrapped with the reinforcement layer part, and the outer circumference of the reinforcement layer part is covered with the outer protective layer.

[0005] It is further characterized in that: a positioning optical fiber is arranged at the center of the composite nylon rod, and the positioning optical fiber and the nylon rod are wrapped around the outer circumference of the composite tape layer, and the composite tape layer is a single-layer wrapping structure with an overlap rate of 0% but a coverage rate of 100%, so as to ensure that the break position of the positioning optical fiber can be quickly obtained by calculation; The nylon rod is a rod body with a rectangular longitudinal section, which makes the outer circumference formed after the nylon rod is wrapped into a reliable annular plane, ensuring that there is no relatively thin and easy-to-gnaw area left for mice to gnaw; The first optical unit composite device and the second optical unit composite device are respectively connected to the two ends of the length direction of the composite nylon rod, the first optical unit composite device includes a first transmitting unit and a first receiving unit, the second optical unit composite device includes a second transmitting unit and a second receiving unit, the first optical unit composite device and the second optical unit composite device are respectively connected to the skin breakage position monitoring module, the skin breakage position monitoring module integrates all the data of the cable core length position corresponding to the straight length position of the positioning optical fiber, the first transmitting unit sends the optical signal along the positioning optical fiber with the recording mark of the corresponding signal, under normal circumstances, the second receiving unit receives the corresponding optical signal with the recording mark at equal intervals; when the positioning optical fiber is damaged at the corresponding length position of the cable core, the optical unit emitted from the first transmitting unit is reflected at the damaged position and received by the first receiving unit, the emission and reception time difference of the corresponding optical unit is obtained according to the recorded mark, the total length of the positioning optical fiber at the damaged position and the starting end of the positioning optical fiber is obtained by half of the time difference and the propagation speed of the optical unit, and then the damaged position of the positioning optical fiber corresponding to the cable core length is obtained according to the data of the cable core length position corresponding to the straight length position of the positioning optical fiber; When the second receiving unit of the second optical unit composite device does not receive the optical signal emitted by the first transmitting unit within the set interval time, the second transmitting unit emits a calibration optical signal with a record mark, and the calibration optical signal is reflected at the location of the broken positioning optical fiber and returns along the rear section of the positioning optical fiber until it is received by the second receiving unit. The emission and reception time difference of the corresponding optical unit is obtained according to the record mark of the second transmitting unit, and the total length of the positioning optical fiber at the location of the broken position and the end of the positioning optical fiber is obtained by half of the time difference and the propagation speed of the optical unit. Then, the damaged position of the positioning optical fiber corresponding to the cable core length is obtained according to the data of the cable core length position corresponding to the straight length position of the positioning optical fiber, and the damaged position of the positioning optical fiber emitted by the first transmitting unit is quickly compared. If the positions are consistent, the subsequent repair operation is carried out by quickly locating the position; When the length of the optical cable is greater than 100 km, a group of first optical unit composite devices and second optical unit composite devices are set every 20 km to ensure that the broken cable position can be monitored quickly and timely; The optical signal emitted by the first optical unit of the first optical unit composite device is emitted once at intervals of a set time period, and the data of the set time period is set according to the rat density in the area.

[0006] After adopting the structure of the present invention, the optical cable mainly locates the skin breakage position in advance by means of the nylon rod with the positioning optical fiber. When the mouse chews off the positioning optical fiber in the nylon rod, the skin breakage position can be determined by testing the breakpoint position of the positioning optical fiber in the nylon rod through the terminal equipment, and timely repair can be carried out to prevent the optical fiber used for communication from being discovered after being chewed off, which can effectively avoid signal interruption and prevent accidents before they happen. The positioning optical fiber in the nylon rod is mainly used to locate the skin breakage position and is not used for daily signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic cross-sectional view of a specific embodiment of the present invention; Figure 2 is a perspective view of an expanded composite nylon rod applicable to the present invention; The names corresponding to the serial numbers in the figure are as follows: The cable core part 10, the central reinforcement member 11, a plurality of loose tubes 12, the inner sheath 13, the optical fiber 14, the fiber paste 15, the aluminum-plastic composite tape 16, the reinforcement layer part 20, the composite tape layer 21, the nylon rod wrapping layer 22, the composite nylon rod 23, the nylon rod 24, the positioning optical fiber 25, and the outer sheath 30. DETAILED DESCRIPTION

[0008] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0009] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0010] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0011] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0012] An optical cable capable of monitoring the location of skin damage, see Figure 1-Figure 2 , which includes a cable core part 10, a reinforcement layer part 20, and an outer sheath 30; The cable core part 10 includes a central reinforcement member 11, a plurality of loose tubes 12, and an inner sheath 13. The loose tubes 12 are arranged around the outer circumference of the central reinforcement member 11 in a unidirectional spiral twisted manner, and the inner sheath 13 is coated on the equivalent outer circumference formed by the combination of the loose tubes 12. The reinforcement layer portion 20 includes a composite tape layer 21 and a nylon rod wrapping layer 22 radially arranged from the inside to the outside. The nylon rod wrapping layer 22 is formed by wrapping a single composite nylon rod 23. The single composite nylon rod 23 includes a nylon rod 24 with a central cavity and a positioning optical fiber 25 located in the central cavity. The outer circumference of the cable core part 10 is wrapped with a reinforcement layer part 20 , and the outer circumference of the reinforcement layer part 20 is covered with an outer sheath 30 .

[0013] In specific implementation, a positioning optical fiber 25 is arranged at the center of the composite nylon rod 23. The positioning optical fiber 25 and the nylon rod 24 are wrapped around the outer circumference of the composite tape layer 21. The composite tape layer 21 is a single-layer wrapping structure with an overlap rate of 0% but a coverage rate of 100% (a spiral wrapping structure, with adjacent spirals arranged closely together), ensuring that the break position of the positioning optical fiber 25 can be quickly obtained by calculation; The nylon rod 24 is a rod body with a rectangular longitudinal section, which makes the outer circumference formed by the nylon rod 24 after being wrapped into a reliable annular plane, ensuring that there is no relatively thin and easy-to-gnaw area left for mice to gnaw.

[0014] In a specific implementation, the first optical unit composite device and the second optical unit composite device are respectively connected to the two ends of the length direction of the composite nylon rod 23, the first optical unit composite device includes a first transmitting unit and a first receiving unit, the second optical unit composite device includes a second transmitting unit and a second receiving unit, the first optical unit composite device and the second optical unit composite device are respectively connected to the skin breakage position monitoring module, the skin breakage position monitoring module integrates all the data of the cable core length position corresponding to the straight length position of the positioning optical fiber, the first transmitting unit sends the optical signal along the positioning optical fiber with a recording mark of the corresponding signal, and under normal circumstances, the second receiving unit receives the corresponding optical signal with the recording mark at equal intervals; when the positioning optical fiber is damaged at the corresponding length position of the cable core, the optical unit emitted from the first transmitting unit is reflected at the damaged position and received by the first receiving unit, and the emission and reception time difference of the corresponding optical unit is obtained according to the recorded mark, and the total length of the positioning optical fiber at the damaged position and the starting end of the positioning optical fiber 25 is obtained by half of the time difference and the propagation speed of the optical unit, and then the damaged position of the positioning optical fiber corresponding to the cable core length is obtained according to the data of the cable core length position corresponding to the straight length position of the positioning optical fiber 25; When the second receiving unit of the second optical unit composite device does not receive the optical signal emitted by the first transmitting unit within the set interval time, the second transmitting unit emits a calibration optical signal with a record mark, and the calibration optical signal is reflected at the location where the positioning optical fiber is broken and returns along the rear section of the positioning optical fiber until it is received by the second receiving unit. The emission and reception time difference of the corresponding optical unit is obtained according to the record mark of the second transmitting unit, and the total length of the positioning optical fiber 25 at the location of the broken part and the end of the positioning optical fiber 25 is obtained by half of the time difference and the propagation speed of the optical unit. Then, the damaged position of the positioning optical fiber corresponding to the cable core length is obtained according to the data of the cable core length position corresponding to the straight length position of the positioning optical fiber 25, and the damaged position of the optical unit emitted by the first transmitting unit is quickly compared. If the positions are consistent, the subsequent repair operation is carried out by quickly locating the position; When the length of the optical cable is greater than 100 km, a group of first optical unit composite devices and second optical unit composite devices are set every 20 km to ensure that the broken cable position can be monitored quickly and timely; The optical signal emitted by the first optical unit of the first optical unit composite device is emitted once at intervals of a set time period, and the data of the set time period is set according to the rat density in the area.

[0015] In a specific embodiment, six loose tubes 12 are arranged around the outer periphery of the central reinforcement 11. The colors of the six loose tubes 12 are different to ensure reliable distinction. Each loose tube 12 has a corresponding optical fiber 14 and fiber paste 15 built in. The aluminum-plastic composite belt 16 is coated on the equivalent outer periphery formed by the six loose tubes 12, and the inner protective layer 13 is coated on the outer periphery of the aluminum-plastic composite belt 16; the composite belt layer 21 is specifically a plastic-steel composite belt.

[0016] In a specific embodiment, the inner protective layer is made of polyethylene, the outer protective layer is made of polyethylene, the material of the nylon rod 24 is PA6 or PA12; and the central reinforcement 11 is a non-metal reinforcement or a metal reinforcement.

[0017] This optical cable mainly uses a nylon rod with a positioning optical fiber to locate the broken skin position in advance. When a mouse chews through the positioning optical fiber in the nylon rod, the broken skin position can be determined by testing the breakpoint of the positioning optical fiber in the nylon rod through the terminal equipment, and repaired in time to prevent the optical fiber used for communication from being discovered after being chewed through. This can effectively avoid signal interruption and prevent problems before they occur. The positioning optical fiber in the nylon rod is mainly used to locate the broken skin position and is not used for daily signal transmission.

[0018] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0019] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An optical cable capable of monitoring the location of a broken cable, characterized in that: It includes: The cable core part includes a central reinforcement member, a plurality of loose tubes, and an inner protective layer. The loose tubes are arranged around the outer circumference of the central reinforcement member in a unidirectional spiral twisted manner, and the inner protective layer is coated on the equivalent outer circumference formed by the combination of the loose tubes; The reinforcement layer includes a composite tape layer and a nylon rod wrapping layer radially arranged from the inside to the outside, wherein the nylon rod wrapping layer is formed by wrapping a single composite nylon rod, wherein the single composite nylon rod includes a nylon rod with a central cavity and a positioning optical fiber located in the central cavity; and an outer sheath; The outer circumference of the cable core part is wrapped with the reinforcement layer part, and the outer circumference of the reinforcement layer part is covered with the outer protective layer.

2. The optical cable capable of monitoring the position of skin damage according to claim 1, characterized in that: A positioning optical fiber is arranged at the center of the composite nylon rod. The positioning optical fiber and the nylon rod are wrapped around the outer circumference of the composite tape layer. The composite tape layer is a single-layer wrapping structure with an overlap rate of 0% but a covering rate of 100%.

3. An optical cable capable of monitoring the position of skin damage according to claim 1 or 2, characterized in that: The nylon rod is a rod body with a rectangular longitudinal section.

4. The optical cable capable of monitoring the position of skin damage according to claim 1, characterized in that: The first optical unit composite device and the second optical unit composite device are respectively connected to the two ends of the composite nylon rod in the length direction, the first optical unit composite device includes a first transmitting unit and a first receiving unit, the second optical unit composite device includes a second transmitting unit and a second receiving unit, the first optical unit composite device and the second optical unit composite device are respectively connected to the skin breakage position monitoring module, the skin breakage position monitoring module integrates all the data of the cable core length position corresponding to the straight length position of the positioning optical fiber, the first transmitting unit sends the optical signal along the positioning optical fiber with a recording mark of the corresponding signal, under normal circumstances, the second receiving unit receives the corresponding optical signal with the recording mark at equal intervals; when the positioning optical fiber is damaged at the corresponding length position of the cable core, the optical unit emitted from the first transmitting unit is reflected at the damaged position and received by the first receiving unit, the emission and reception time difference of the corresponding optical unit is obtained according to the recorded mark, the total length of the positioning optical fiber at the damaged position and the starting end of the positioning optical fiber is obtained by half of the time difference and the propagation speed of the optical unit, and then the damaged position of the positioning optical fiber corresponding to the cable core length is obtained according to the data of the cable core length position corresponding to the straight length position of the positioning optical fiber.

5. The optical cable capable of monitoring the position of skin damage according to claim 4, characterized in that: When the second receiving unit of the second optical unit composite device does not receive the optical signal emitted by the first transmitting unit within the set interval time, the second transmitting unit emits a calibration optical signal with a record mark, and the calibration optical signal is reflected at the location of the broken positioning optical fiber and returns along the rear section of the positioning optical fiber until it is received by the second receiving unit. The emission and reception time difference of the corresponding optical unit is obtained according to the record mark of the second transmitting unit, and the total length of the positioning optical fiber at the location of the broken position and the end of the positioning optical fiber is obtained by half of the time difference and the propagation speed of the optical unit. Then, the damaged position of the positioning optical fiber corresponding to the cable core length is obtained according to the data of the cable core length position corresponding to the straight length position of the positioning optical fiber, and the damaged position of the positioning optical fiber emitted by the first transmitting unit is quickly compared. If the positions are consistent, the subsequent repair operation is carried out by quickly locating the position.

6. The optical cable capable of monitoring the position of skin damage according to claim 5, characterized in that: When the length of the optical cable is greater than 100 km, a group of first optical unit composite components and a group of second optical unit composite components are arranged every 20 km.

7. The optical cable capable of monitoring the position of skin damage according to claim 4, characterized in that: The optical signal emitted by the first optical unit of the first optical unit composite device is emitted once at intervals of a set time period, and the data of the set time period is set according to the rat density in the area.

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