A fiber optic cable damage monitoring and alarm device

Abstract

The present invention relates to an optical cable damage monitoring alarm device, comprising an optical transmitter (1), a damage monitoring optical fiber (2), a photoelectric converter, a controller (3) and a GSM unit which are connected in sequence and are placed between a polyethylene sheath (4) and a corrugated reinforced steel belt (5). The optical transmitter (1) is connected to the controller (3). The optical transmitter (1) converts an electrical signal of the controller (3) into an optical signal and transmits it to the damage monitoring optical fiber (2). The optical signal of the damage monitoring optical fiber (2) is converted into an electrical signal through the photoelectric converter and transmitted to the controller (3). The controller (3) analyzes the electrical signal and controls the GSM unit to send information to a staff member when an abnormality occurs in the electrical signal. Compared with the prior art, the damage monitoring optical fiber (2) and the GSM unit enable the staff member to find abnormalities in time before the optical cable optical fiber is damaged, thereby avoiding communication failure caused by damage to the optical cable optical fiber.

Description

Technical Field

[0001] The invention relates to the field of optical cables, and in particular to an optical cable damage monitoring and alarm device. Background Art

[0002] With the acceleration of the pace of life, people are increasingly inseparable from the Internet and communications. In the demanding pursuit of quality of life, communication technology is constantly updated, from transmission equipment to transmission conductors, and efforts are constantly being made to achieve long transmission distance, low bit error rate and stable operation. Optical fiber communication is a transmission technology that uses laser beam signals as carriers. Its transmission conductor is a filament drawn from quartz, which is similar in thickness to a human hair. It has the advantages of low cost, low loss and large transmission capacity. But the disadvantage is that it is easily damaged by the outside world. The structure of the traditional direct buried outdoor optical cable is divided from the outside to the inside: polyethylene sheath, corrugated reinforced steel belt, plastic sheath, aluminum foil, loose tube, filling ointment, and optical fiber, which are designed in terms of compression resistance, rat bite resistance, flame retardancy, and waterproofness. Since the optical cable itself needs toughness when it is laid, the outer sheath of the optical cable cannot be very hard, which creates opportunities for external invasion. For example, a reflection peak appeared in the optical fiber test curve. After searching, it was found that it was because a small stone was placed under the optical cable, causing the fault point.

[0003] There are two manifestations of accidental damage to optical cables: one is that the optical fiber is broken; the other is that the optical fiber is squeezed, the bending radius at some points cannot meet the technical requirements, and the outgoing line is reflected and lost. Therefore, how to warn maintenance personnel before the external environment damages the optical fiber of the optical cable is an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide an optical cable damage monitoring and alarm device in order to overcome the defects of the above-mentioned prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] An optical cable damage monitoring and alarm device comprises an optical transmitter, a damage monitoring optical fiber, a photoelectric converter, a controller and a GSM unit connected in sequence, wherein the optical transmitter is connected to the controller, and the optical transmitter, damage monitoring optical fiber, photoelectric converter, controller and GSM unit are placed between the polyethylene sheath and the corrugated reinforced steel belt of the optical cable, the optical transmitter converts the electrical signal of the controller into an optical signal and transmits it to the damage monitoring optical fiber, the optical signal of the damage monitoring optical fiber is converted into an electrical signal through the photoelectric converter and transmitted to the controller, and the controller analyzes the electrical signal and controls the GSM unit to send information to the staff when an abnormality occurs in the electrical signal.

[0007] The damage monitoring optical fiber is bonded to the reinforcing steel belt.

[0008] The damage monitoring optical fiber is circumferentially bonded to the reinforcing steel belt.

[0009] The damage monitoring optical fiber is point-bonded to the reinforcing steel belt in a surrounding manner.

[0010] The optical cable is divided into a plurality of sections, each section comprising an optical transmitter, a damage monitoring optical fiber, a photoelectric converter, a controller and a GSM unit which are connected in sequence.

[0011] The controller voltage input interface is connected with a wire, and the wires connected to the multiple controllers form a wire harness and pass through a polyethylene sheath and the ground to a power supply device.

[0012] Different section controllers control the GSM unit to send different information to the staff when an abnormality occurs in the electrical signal.

[0013] Each of the sections is 1000 m.

[0014] The controller includes an ESP8266 chip.

[0015] The GSM unit includes a SIM900 chip.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] (1) By using the damage monitoring optical fiber and GSM unit, workers can detect abnormalities in time before the optical cable or fiber is damaged, thus avoiding communication failures caused by damage to the optical cable or fiber.

[0018] (2) The damage monitoring optical fiber is bonded to the reinforcing steel belt in a point-by-point manner rather than being fully bonded to the reinforcing steel belt. That is, when foreign objects such as stones are encountered between the two bonding points, the damage monitoring optical fiber signal will become abnormal, making it easy to detect problems in a timely manner.

[0019] (3) Optical transmitters, damage monitoring optical fibers, photoelectric converters, controllers, and GSM units are set up in different sections. When an abnormality occurs in the electrical signal, the controllers in different sections control the GSM units to send different information to the staff, so that the staff can locate the abnormal section.

[0020] (4) Both the ESP8266 chip and the SIM900 chip are low-power chips and are suitable for underground use.

[0021] (5) The wires connecting the multiple controllers form a wire harness and pass through the polyethylene sheath and the ground to the power supply device, avoiding the need to set multiple holes in the polyethylene sheath and the ground.

[0022] (6) Each section is 1000m long, which can ensure that the gap between the polyethylene sheath of the optical cable and the corrugated reinforced steel belt can accommodate the wires connected to the controller, and also help the staff to locate the abnormal section. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the power supply structure of the present invention;

[0025] Reference numerals:

[0026] 1 is an optical transmitter; 2 is a damage monitoring optical fiber; 3 is a controller; 4 is a polyethylene sheath; 5 is a corrugated reinforced steel belt; 6 is a wiring harness; 7 is a power supply device; 8 is the ground; and 9 is a bonding point. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0028] Example

[0029] This embodiment provides an optical cable damage monitoring and alarm device, comprising an optical transmitter 1, a damage monitoring optical fiber 2, a photoelectric converter, a controller 3 and a GSM unit connected in sequence, the optical transmitter 1 is connected to the controller 3, the optical transmitter 1, the damage monitoring optical fiber 2, the photoelectric converter, the controller 3 and the GSM unit are placed between the polyethylene sheath 4 and the corrugated reinforced steel belt 5 of the optical cable, the optical signal of the damage monitoring optical fiber 2 is converted into an electrical signal by the photoelectric converter and transmitted to the controller 3, the controller 3 analyzes the electrical signal and controls the GSM unit to send information to the staff when the electrical signal is abnormal. The optical cable damage monitoring and alarm device can enable the staff to find abnormalities in time before the optical cable fiber is damaged, thereby avoiding communication failures caused by damage to the optical cable fiber.

[0030] like Figure 1 As shown, the damage monitoring optical fiber 2 is point-bonded to the reinforcing steel belt. The black dots in the figure are partial bonding points 9. The bonding points 9 are preferably evenly arranged. When foreign objects such as stones are encountered between the two bonding points 9, the damage monitoring optical fiber 2 will bend and the signal of the damage monitoring optical fiber 2 will become abnormal, which is convenient for timely detection of problems.

[0031] like Figure 2 As shown, the optical cable is divided into multiple sections, each section includes an optical transmitter 1, a damage monitoring optical fiber 2, an optoelectronic converter, a controller 3 and a GSM unit connected in sequence. The voltage input interface of the controller 3 is connected with a wire, and the wires connected to multiple controllers 3 form a wire harness 6 and pass through the polyethylene sheath 4 and the ground 8 to the power supply device 7, avoiding the need to set multiple holes in the polyethylene sheath 4 and the ground 8.

[0032] The controllers 3 in different sections control the GSM units to send different information to the staff when an abnormality occurs in the electrical signal, so that the staff can locate the abnormal section.

[0033] Each section is 1000m, which can ensure that the gap between the polyethylene sheath 4 and the corrugated reinforced steel belt 5 of the optical cable can accommodate the wires connected to the controller 3, and also help the staff to locate the abnormal section.

[0034] The controller 3 includes an ESP8266 chip, and the GSM unit includes a SIM900 chip. Both the ESP8266 chip and the SIM900 chip are low-power chips and are suitable for underground use. The optical transmitter 1 uses a 10Gb / s0.18umCMOS chip, and the photoelectric converter is JYT-WS801MI. The above equipment models are all small in size and can be placed between the polyethylene sheath 4 and the corrugated reinforced steel belt 5.

[0035] The electrical signal transmitted by the controller 3 to the optical transmitter may be the same or different. The controller 3 detects abnormal conditions by analyzing the jump of the electrical signal obtained by the photoelectric converter.

[0036] The damage monitoring optical fiber 2 is identical to the optical cable optical fiber. In another embodiment, the controller 3 may integrate the optical transmitter 1 chip and the GSM unit. The information sent to the staff includes the section information and the abnormal classification information. The adhesive may use 353ND.

[0037] During operation, if part of the damage monitoring optical fiber 2 is abnormally bent, for example due to the presence of stones, the controller 3 will receive an abnormal electrical signal, and the staff will receive the section information and the information of the abnormal bending; if part of the damage monitoring optical fiber 2 is broken, such as due to animal biting, the controller 3 will not be able to receive the electrical signal, and the staff will receive the section information and the information of the abnormal breaking.

[0038] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. An optical cable damage monitoring and alarm device, characterized in that: The optical transmitter (1), the damage monitoring optical fiber (2), the photoelectric converter, the controller (3) and the GSM unit are connected in sequence. The optical transmitter (1) is connected to the controller (3). The optical transmitter (1), the damage monitoring optical fiber (2), the photoelectric converter, the controller (3) and the GSM unit are placed between the polyethylene sheath (4) and the corrugated reinforced steel belt (5) of the optical cable. The optical transmitter (1) converts the electrical signal of the controller (3) into an optical signal and transmits it to the damage monitoring optical fiber (2). The optical signal of the damage monitoring optical fiber (2) is converted into an electrical signal by the photoelectric converter and transmitted to the controller (3). The controller (3) analyzes the electrical signal and controls the GSM unit to send information to the staff when the electrical signal is abnormal. The damage monitoring optical fiber (2) is bonded to the reinforcing steel belt; The optical cable is divided into a plurality of sections, each section comprising an optical transmitter (1), a damage monitoring optical fiber (2), a photoelectric converter, a controller (3) and a GSM unit which are connected in sequence.

2. The optical cable damage monitoring and alarm device according to claim 1, characterized in that: The damage monitoring optical fiber (2) is circumferentially bonded to the reinforcing steel belt.

3. The optical cable damage monitoring and alarm device according to claim 2 is characterized in that: The damage monitoring optical fiber (2) is point-bonded to the reinforcing steel belt in a surrounding manner.

4. The optical cable damage monitoring and alarm device according to claim 1, characterized in that: The voltage input interface of the controller (3) is connected to a wire, and the wires connecting the multiple controllers (3) form a wire harness (6) and pass through the polyethylene sheath (4) and the ground (8) to the power supply device (7).

5. The optical cable damage monitoring and alarm device according to claim 1, characterized in that: The controllers (3) in different sections control the GSM units to send different information to the staff when an abnormality occurs in the electrical signal.

6. The optical cable damage monitoring and alarm device according to claim 1, characterized in that: Each of the sections is 1000 m.

7. The optical cable damage monitoring and alarm device according to claim 1, characterized in that: The controller (3) includes an ESP8266 chip.

8. The optical cable damage monitoring and alarm device according to claim 1, characterized in that: The GSM unit includes a SIM900 chip.

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