Fiber Optic Survey System

Abstract

The present invention discloses an optical fiber survey system, including an optical fiber identifier, a host and a signal generator. The signal generator is clamped at the signal input end of the optical fiber jumper and bends the optical fiber back and forth at a fixed frequency to generate a light intensity modulation signal of a specific frequency; the optical fiber identifier is clamped at the signal output end of the optical fiber jumper and detects the light intensity modulation signal in the optical fiber and prompts the detection result; the signal generator is connected to the host, and the host supplies power to the signal generator and controls the signal generator to bend the optical fiber back and forth at a fixed frequency. The present invention utilizes the signal of the optical fiber jumper itself and combines the characteristics of the optical fiber to design a lossless optical fiber and a high-efficiency detection system with no risk of network disconnection. Multiple signal generator devices can be used simultaneously for measurement to improve the efficiency of investigation. The battery and the signal generator are separated to reduce the weight and size of the signal generator. The signal generator uses a feedback method to stabilize the rotation speed, stabilize the frequency of the light intensity modulation signal, and reduce line interference.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical fiber communication technology, and in particular relates to an optical fiber census system. Background Art

[0002] With decades of network construction and the increasing demand for optical fiber networks, a large number of dismantled and decommissioned networks in the actual metropolitan area network cannot be effectively utilized. There are also many unclear marks at the optical fiber intermediate nodes such as optical fiber joint boxes and optical cross boxes in the used networks. In the case of not being able to disconnect the network and having to sort it out, the requirements for operation and maintenance are getting higher and higher. On the one hand, through normal maintenance measures, the maintenance of optical cable lines continuously eliminates some potential accidents caused by external forces, and at the same time continuously improves the deficiencies in design and construction to avoid and reduce line redundancy and the impact caused by some unpreventable accidents. On the other hand, when accidents occur, they can be handled in a timely manner. Eliminate and repair the lines as soon as possible to provide stable and high-quality transmission lines.

[0003] In recent years, in order to further standardize the standardized management of optical cross-connect boxes, the core nodes of the metropolitan area network, and better support the development of all services, operators in various regions have actively carried out special actions to standardize the urban optical cross-connect boxes. The first purpose is to eliminate safety hazards. Designated responsible persons in different regions promptly handle problems that affect the appearance of optical cross-connect boxes, such as damaged door locks and missing baffles, to ensure that rectification is done as soon as they are found, and eliminate safety hazards of optical cross-connect boxes. The second is to ensure data consistency. Special personnel are assigned to number the urban optical cross-connect boxes one by one. On the one hand, obvious markings are made on the outside of the optical cross-connect boxes. On the other hand, the labels inside the optical cross-connect boxes are checked and rectified. At the same time, the naming of the optical cross-connect boxes is accurately sorted out, compared with comprehensive asset management, and wrong data is modified in the background in a timely manner to ensure that the asset management data is true and accurate. The third is to strengthen assessment management. In response to common problems such as chaotic pigtail routing and non-standard labels in some optical cross-connect boxes, maintenance personnel are organized to make timely rectifications, and use WeChat and other means to upload comparison photos before and after the rectification of the optical cross-connect boxes, and follow up on the site and asset management inspections simultaneously, and the rectification effect is directly linked to the maintenance assessment.

[0004] The most important thing is to check the direction of the optical fiber line and the dead optical fiber. The method used in the past is to disconnect the optical fiber from the network and use a visual fault detector to search one by one. This manual method has a better effect when the number of optical fibers on the user side is small, but it is not very efficient when the number of optical fibers at the optical cross-connect box reaches hundreds of cores. Because it is identified by the naked eye, there is a risk of network disconnection, the efficiency is relatively low, and the dead optical fiber cannot be found.

[0005] In order to conduct line inspection in places with dense optical fibers such as optical cross-connect boxes or computer rooms, a method is needed that does not affect normal business communications and can more quickly find the direction of the optical fiber line. Since the optical fiber jumper itself is composed of bare optical fiber made of glass, Kevlar reinforced core and outer layer of engineering plastic, all materials are conventional insulators, and electromagnetic signals cannot propagate in such media. Optical fiber can propagate signals, but the coupling requirements of single-mode optical fiber are extremely high. There is basically no other way to couple the signal into the optical fiber without disconnecting the optical fiber and coupling it with a connector from the end face of the optical fiber jumper. Summary of the invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an optical fiber survey system includes an optical fiber identification instrument, a host and a signal generator.

[0007] The signal generator is used to be clamped at the signal input end of the optical fiber jumper and to bend the optical fiber back and forth at a fixed frequency, so that a light intensity modulation signal of a specific frequency is generated in the optical fiber;

[0008] The optical fiber identification instrument is used to be clamped at the signal output end of the optical fiber jumper and detect the light intensity modulation signal in the optical fiber, and prompt the detection result;

[0009] The signal generator is connected to a host, and the host supplies power to the signal generator and controls the signal generator to bend the optical fiber back and forth at a fixed frequency.

[0010] As a preferred embodiment of the above technical solution, the host includes a single-chip microcomputer and a signal generator signal interface, and the signal generator signal interface is electrically connected to the single-chip microcomputer;

[0011] The signal generator comprises a shell, a motor, a cam, a top block, and a top block base. An arc groove is arranged on the top block base, the top block matches the arc groove, a clamping station for bending the optical fiber is formed between the top block and the arc groove, the arc groove is composed of a fixed part and a movable part, wherein the fixed part is arranged on the fixed base, the fixed base is fixed inside the shell, the movable part is arranged on the connecting rod, the connecting rod is rotatably installed inside the shell through a rotating shaft, a force-bearing part is arranged at one end of the connecting rod, the rotating shaft is located between the movable part and the force-bearing part, the movable part and the force-bearing part are located on the same side of the connecting rod, the cam is driven to rotate by the motor, a torsion spring is sleeved on the rotating shaft, the force-bearing part is kept in a state of being close to the circumferential surface of the cam by the torsion spring, the motor is fixed inside the shell, the motor is connected with a tachometer, the tachometer and the motor are connected with a signal generator plug which can be inserted into the signal interface of the signal generator, the single chip microcomputer controls the motor speed through the speed signal fed back by the tachometer, the top block is fixed in the sliding cover, the sliding cover can be slidably installed on the shell in the direction of the arc groove, and the sliding cover is snap-connected with the shell.

[0012] As a preferred embodiment of the above technical solution, the number of signal generator signal interfaces on the host is multiple, different signal generators have different motor speeds and are marked with different given numbers, and the optical fiber identifier can detect the light intensity modulation signals generated by all signal generators and prompt them as measurement numbers on its display screen, and the measurement numbers correspond one-to-one to the given numbers.

[0013] As a preferred embodiment of the above technical solution, the number of the signal generator signal interfaces is 6.

[0014] As a preferred embodiment of the above technical solution, a guide rod is connected to the sliding cover, a guide rail for inserting the guide rod is provided in the shell, a telescopic spring is fixedly installed in the guide rail, and the telescopic spring presses the guide rod tightly.

[0015] As a preferred embodiment of the above technical solution, a hook is provided in the shell, one end of the hook is fixed to the inner wall of the shell, and the other end faces the direction of the sliding cover and is provided with a hook portion. The sliding cover is provided with a card block for the hook portion to hook, and the top block is inserted into the arc-shaped groove and the hook portion hooks the card block. An unlocking portion is provided in the middle of the hook, and the hook portion is separated from the card block by pressing the unlocking portion. An opening is provided on the shell for exposing the unlocking portion.

[0016] As a preferred embodiment of the above technical solution, a pressing portion is provided on the sliding cover, and the top block is inserted into the arc-shaped groove by pressing the pressing portion.

[0017] As a preferred embodiment of the above technical solution, the host includes a battery box, and a rechargeable battery is installed in the battery box.

[0018] The beneficial effects of the present invention are: utilizing the signal of the optical fiber jumper itself and combining the characteristics of the optical fiber to design the lossless optical fiber and no network disconnection risk, high-efficiency detection system of the present invention. Multiple signal generator devices can be used for measurement at the same time, which is significantly more efficient than the one-to-one detection method. The battery and the signal generator are separated to reduce the weight and size of the signal generator, and it can be used in places where the optical fiber jumpers are dense. The signal generator uses a feedback method to stabilize the rotation speed, so that the frequency of the light intensity modulation signal is stable, and the line interference is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the working status of the optical fiber identifier and the signal generator;

[0020] Figure 2 It is a schematic diagram of the structure of the host;

[0021] Figure 3 It is another structural diagram of the host;

[0022] Figure 4 It is a schematic diagram of the principle of generating light intensity modulation signal in optical fiber;

[0023] Figure 5 is a cross-sectional schematic diagram of a signal generator;

[0024] Figure 6 It is a schematic diagram of the structure of the signal generator when the optical fiber is not clamped;

[0025] Figure 7 It is a schematic diagram of the structure when the movable part presses the optical fiber;

[0026] Figure 8 It is a schematic diagram of the structure when the movable part releases the optical fiber. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 present invention can be understood according to specific circumstances.

[0030] like Figure 1-8 As shown, the optical fiber survey system includes an optical fiber identification instrument 1, a host 2 and a signal generator 3.

[0031] The signal generator 3 is used to clamp at the signal input end of the optical fiber 4 jumper and bend the optical fiber 4 back and forth at a fixed frequency, so that a light intensity modulation signal 5 of a specific frequency is generated in the optical fiber 4;

[0032] The optical fiber identification instrument 1 is used to be clamped at the signal output end of the optical fiber 4 jumper and detect the light intensity modulation signal 5 in the optical fiber 4, and prompt the detection result;

[0033] The signal generator 3 is connected to the host 2, and the host 2 supplies power to the signal generator 3 and controls the signal generator 3 to bend the optical fiber 4 back and forth at a fixed frequency. There is a service in the optical fiber 4, that is, there is an optical signal. The communication signal is generally controlled by APC, and the light intensity remains basically unchanged. By using the characteristics of the optical fiber 4, a certain attenuation of the optical signal can be produced by applying a bend outside the optical fiber 4 through the signal generator 3. This attenuation is combined with the principle of optical fiber macrobend leakage to detect the leakage light through the optical fiber identifier 1. The leakage light will also change in optical power as the optical fiber is bent. Finally, by detecting this power change (optical intensity modulation signal 5), it can be known which optical fiber jumper is bent, that is, the signal output end of the optical fiber 4 jumper corresponds to the signal input of the optical fiber 4 jumper to complete the matching.

[0034] Further, the host 2 includes a single chip microcomputer and a signal generator signal interface 6, and the signal generator signal interface 6 is electrically connected to the single chip microcomputer;

[0035] The signal generator 3 includes a housing 7, a motor 8, a cam 9, a top block 10, and an arc-shaped groove 12. The top block 10 matches the arc-shaped groove 12. A clamping station 13 for bending the optical fiber 4 is formed between the top block 10 and the arc-shaped groove 12. The arc-shaped groove 12 is composed of a fixed part and a movable part. The fixed part is arranged on a fixed base 11, and the fixed base 11 is fixed inside the housing 7. The movable part 14 is arranged on a connecting rod 15. The connecting rod 15 is rotatably installed inside the housing 7 through a rotating shaft 16. A force-bearing part 17 is arranged at one end of the connecting rod 15, and the rotating shaft 16 is located between the movable part 14 and the force-bearing part 17. The movable part 14 and the force-bearing part 17 are located on the same side of the connecting rod 15. The cam 9 is driven to rotate by the motor 8. A torsion spring is sleeved on the rotating shaft 16. The force-bearing part 17 is kept in close contact with the circumferential surface of the cam 9 by the torsion spring. The motor 8 is fixed inside the housing 7. The motor 8 is connected to a tachometer 18. The tachometer 18 and the motor 8 are connected to a signal generator plug 19 that can be inserted into the signal interface 6 of the signal generator. The single-chip microcomputer controls the speed of the motor 8 through the speed signal fed back by the tachometer 18. The top block 10 is fixed in the sliding cover 20. The sliding cover 20 can be slidably installed on the housing 7 in the direction of the arc groove 12, and the sliding cover 20 is snap-fitted with the housing 7.

[0036] The number of the signal generator signal interface 6 on the host 2 can be one (if Figure 2As shown), it can also be multiple. When there is a single signal generator signal interface 6, only one signal generator 3 is used to act on the optical fiber 4, and there is only one light intensity modulation signal 5 in the optical fiber 4. The optical fiber identifier 1 is used to act on the optical fiber 4 in sequence until the light intensity modulation signal 5 is identified, and the search and confirmation of an optical fiber 4 can be completed. When there are multiple signal generator signal interfaces 6 on the host 2, multiple signal generators 3 are respectively connected to the signal generator signal interface 6, the motors 8 of different signal generators 3 have different speeds and different given numbers 21 are marked on the signal generators 3. The optical fiber identifier 1 can detect the light intensity modulation signals 5 generated by all signal generators 3 and prompt them as measurement numbers 23 on its display screen 22, and the measurement number 23 corresponds to the given number 21 one by one. When the optical fiber identifier 1 detects the light intensity modulation signal 5, the measurement number 23 is prompted on its display screen 22, and the measurement number 23 corresponds to the given number 21 on the signal generator 3, so that it can be known which signal generator 3 and the optical fiber identifier 1 are clamped at both ends of the same optical fiber. If the light intensity modulation signal 5 is not detected, the measurement number 23 is not displayed, and the fiber identification instrument 1 is clamped on the signal output ends of the remaining fiber 4 jumpers in turn until the measurement number 23 is displayed, completing the measurement of one fiber 4. The method of multiple signal generator signal interfaces 6 can greatly improve the efficiency of fiber optic census.

[0037] Furthermore, the number of the signal generator signal interfaces is 6, such as Figure 3 As shown, one host can match 6 signal generators 3 at the same time, and the 6 signal generators 3 are respectively clamped at different optical fiber 4 jumper signal input ends. At this time, there are light intensity modulation signals 5 of different frequencies in 6 optical fibers 4 among the many optical fibers. The optical fiber identification instrument 1 is used to detect the signals at the optical fiber 4 jumper signal output ends in sequence. After a certain light intensity modulation signal 5 is detected, the corresponding measurement number 23 is displayed. This can greatly improve the detection and troubleshooting efficiency.

[0038] Furthermore, the slide cover 20 is connected with a guide rod 24 , and a guide rail 25 for inserting the guide rod 24 is provided in the housing 7 , a telescopic spring is fixedly installed in the guide rail 25 , the telescopic spring presses against the guide rod 24 , and one end of the telescopic spring is sleeved on the spring mounting column 26 .

[0039] Furthermore, a hook 27 is provided in the shell 7, one end of the hook 27 is fixed to the inner wall of the shell 7, and the other end faces the direction of the sliding cover 20 and is provided with a hook portion 28. The sliding cover 20 is provided with a block 29 for the hook portion 28 to hook. After the top block 10 is inserted into the arc-shaped groove 12, the hook portion 28 hooks the block 29. An unlocking portion 30 is provided in the middle of the hook 27. The hook portion 28 is disengaged from the block 29 by pressing the unlocking portion 30. An opening 31 is provided on the shell 7 for exposing the unlocking portion 30.

[0040] Furthermore, a pressing portion 32 is provided on the sliding cover 20 , and the top block 10 is inserted into the arc-shaped groove 12 by pressing the pressing portion 32 .

[0041] Furthermore, the host 2 includes a battery box 33, and the battery box 33 contains a rechargeable battery.

[0042] It is worth mentioning that the technical features of the optical fiber identifier, single-chip microcomputer, motor, tachometer, etc. involved in the patent application of the present invention should be regarded as prior art. The optical fiber identifier adopts the patent technology that the applicant has disclosed (the patent application number is 201721226324.2), and the product has been publicly sold on the market. The single-chip microcomputer controls the motor to rotate at a fixed speed through the motor speed feedback from the tachometer. The optical fiber identifier recognizes the light intensity modulation signal of a specific frequency. The specific structure, working principle, and possible control method and spatial layout method of these technical features can be selected conventionally in the field, and should not be regarded as the inventive point of the patent of the present invention. The patent of the present invention will not be further elaborated.

[0043] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A fiber optic survey system, including a fiber optic identifier, characterized in that: It also includes a host and a signal generator. The signal generator is used to be clamped at the signal input end of the optical fiber jumper and to bend the optical fiber back and forth at a fixed frequency, so that a light intensity modulation signal of a specific frequency is generated in the optical fiber; The optical fiber identification instrument is used to be clamped at the signal output end of the optical fiber jumper and detect the light intensity modulation signal in the optical fiber, and prompt the detection result; The signal generator is connected to a host, which supplies power to the signal generator and controls the signal generator to bend the optical fiber back and forth at a fixed frequency. The host comprises a single chip microcomputer and a signal generator signal interface, and the signal generator signal interface is connected to the single chip microcomputer via electrical signals; The signal generator comprises a shell, a motor, a cam, a top block, and a top block base. An arc-shaped groove is arranged on the top block base, the top block matches the arc-shaped groove, a clamping station for bending the optical fiber is formed between the top block and the arc-shaped groove, the arc-shaped groove is composed of a fixed part and a movable part, wherein the fixed part is arranged on the fixed base, the fixed base is fixed inside the shell, the movable part is arranged on the connecting rod, the connecting rod is rotatably installed inside the shell through a rotating shaft, a force-bearing part is arranged at one end of the connecting rod, the rotating shaft is located between the movable part and the force-bearing part, the movable part and the force-bearing part are located on the same side of the connecting rod, the cam is driven to rotate by the motor, a torsion spring is sleeved on the rotating shaft, the force-bearing part is kept in close contact with the circumferential surface of the cam by the torsion spring, the motor is fixed inside the shell, the motor is connected with a tachometer, the tachometer and the motor are connected with a signal generator plug which can be inserted into the signal interface of the signal generator, the single-chip microcomputer controls the motor speed through the speed signal fed back by the tachometer, the top block is fixed in the sliding cover, the sliding cover can be slidably installed on the shell in the direction of the arc-shaped groove, and the sliding cover is snap-connected with the shell, The sliding cover is connected to a guide rod, a guide rail for inserting the guide rod is provided in the shell, a telescopic spring is fixedly installed in the guide rail, the telescopic spring presses the guide rod tightly, there are multiple signal generator signal interfaces on the host, the motor speeds of different signal generators are different and they are marked with different given numbers, the optical fiber identifier can detect the light intensity modulation signals generated by all signal generators and prompt them as measurement numbers on its display screen, and the measurement numbers correspond one to one with the given numbers.

2. The optical fiber survey system according to claim 1, characterized in that: The number of the signal generator signal interfaces is 6.

3. The optical fiber survey system according to claim 1, characterized in that: A hook is provided in the shell, one end of the hook is fixed to the inner wall of the shell, and the other end faces the sliding cover and is provided with a hook portion. The sliding cover is provided with a card block for the hook portion to hook. After the top block is inserted into the arc-shaped groove, the hook portion hooks the card block. An unlocking portion is provided in the middle of the hook. The hook portion is separated from the card block by pressing the unlocking portion. An opening is provided on the shell for exposing the unlocking portion.

4. The optical fiber survey system according to claim 3, characterized in that: The sliding cover is provided with a pressing portion, and the top block is inserted into the arc-shaped groove by pressing the pressing portion.

5. The optical fiber survey system according to claim 1, characterized in that: The host comprises a battery box, in which a rechargeable battery is installed.

Images