Device and method for positioning fault of electric power communication optical cable

Abstract

The invention discloses a device and a method for positioning a fault of an electric power communication optical cable. The device comprises an unmanned aerial vehicle, a bearing seat is arranged below the unmanned aerial vehicle, a vibration assembly and two clamping assemblies are arranged on the bearing seat, the clamping assemblies are used for clamping an optical cable, and the vibration assembly is used for enabling the optical cable to vibrate; the two clamping assemblies are arranged in parallel in a spaced mode, each clamping assembly comprises two sliding seats which are arranged in parallel in a spaced mode, the sliding seats are slidably connected to the bearing seat in the width direction of the bearing seat, arc-shaped clamping plates are arranged on the sliding seats, the two arc-shaped clamping plates are close to each other to clamp an optical cable, and the clamping assemblies further comprise clamping driving assemblies used for driving the two sliding seats to slide; according to the method, the device is used, the unmanned aerial vehicle needs to fly to the position above the optical cable, then the optical cable is clamped through the clamping assembly, then the optical cable is driven to vibrate through the vibration assembly, the optical phase is driven to change by vibrating the optical cable, and therefore the distance between the position of the unmanned aerial vehicle and the fault point optical cable at the moment is determined; and then the specific position of the fault point can be judged by continuously reducing the distance, so that the maintenance efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of optical cable line detection, and in particular to a device and method for locating faults of power communication optical cables. Background Art

[0002] Power communication optical cables provide a highly reliable, low-latency transmission channel for real-time data of important systems such as power grid relay protection devices, and also provide a large-bandwidth transmission channel for special networks such as dispatching data networks. They are an important foundation for supporting safe production and high-quality development of power grids. Once a fault occurs, the long interruption time of the optical cable communication network will cause a large amount of optical cable communication network data to be lost, seriously affecting the safe operation of the power grid. Most power communication optical cables are laid overhead with primary transmission lines, which are vulnerable to natural disasters such as ice and snow, and are also susceptible to external forces and weakened mechanical strength. Therefore, the failure rate of overhead optical cable lines is higher than that of direct buried and pipeline optical fiber cables, and it is difficult to locate the geographical location of the fault in some special geographical environments, such as wild mountainous areas, river areas, woodlands, etc. How to quickly locate the geographical location of power communication optical cable faults, thereby reducing fault handling time and improving emergency repair and maintenance efficiency, has always been a problem that technicians in this field need to solve.

[0003] In the prior art, optical time domain reflectometer technology is used to locate optical cable faults. The OTDR measurement value is the length of the optical fiber. Due to factors such as coiling, bending, and routing twists and turns, the fault point location estimated by using the measured length has a large deviation from the actual fault point location and cannot locate the specific fault location. Maintenance personnel are required to manually infer the specific fault point based on the routing direction of the optical cable, which makes the optical cable fault location process cumbersome and time-consuming, and viewing the fault point is not intuitive.

[0004] In the prior art, the optical cable intelligent line patrol analyzer adopts the fiber optic vibration sensing technology, and performs vibration detection and analysis by interfering the return light with the local oscillation light. The OTDR function is set inside the body of the optical cable intelligent line patrol analyzer. When performing optical cable fault location detection, the optical cable intelligent line patrol analyzer is connected to the spare fiber core of the optical cable under test. When the optical cable or the overhead optical cable tower is knocked on site, the vibration is transmitted to the optical cable, causing the optical phase at the corresponding position to change. The vibration information is detected through the phase change and amplitude change of the light, and the disturbance point is located by the time difference of the optical signal returning to the detection unit. Compared with the length detected by OTDR, the distance between the current position and the fault point can be known, and multiple knocks can approach the fault point to achieve accurate positioning of the optical cable fault point. The optical cable intelligent line patrol analyzer has the advantages of high search efficiency and long detection distance, and has been widely used in various fields. The optical cable intelligent line patrol analyzer is used for fault location of power communication optical cables, and there are the following defects:

[0005] 1. A large number of overhead optical cable towers are located in special geographical environments such as wild mountainous areas, river areas, and forests, which are difficult for operation and maintenance personnel to reach, making it difficult to locate and troubleshoot fault points;

[0006] 2. The test accuracy of the optical cable intelligent line patrol analyzer is limited. When the fault point is close to the pole tower, the test results obtained by knocking on the pole tower cannot accurately determine whether the fault point is located on the small side or the large side of the pole tower. Technicians need to replace the optical cable sections on both sides of the pole tower, which increases the difficulty and cost of operation and maintenance. Summary of the invention

[0007] In order to quickly locate and troubleshoot optical cable faults while saving labor costs and operation time, the present application provides a device and method for locating power communication optical cable faults.

[0008] In a first aspect, the present application provides a device for locating a power communication optical cable fault, which adopts the following technical solution:

[0009] A device for locating a power communication optical cable fault comprises a drone, a bearing seat is provided below the drone, a vibration component and two clamping components are provided on the bearing seat, the clamping component is used to clamp the optical cable, and the vibration component is used to vibrate the optical cable;

[0010] The two clamping assemblies are arranged in parallel and spaced apart. The clamping assemblies include two sliding seats arranged in parallel and spaced apart. The sliding seats are slidably connected to the bearing seat along the width direction of the bearing seat. The sliding seats are provided with arc-shaped clamping plates. The two arc-shaped clamping plates are close to each other to clamp the optical cable. The clamping assembly also includes a clamping drive assembly for driving the two sliding seats to slide.

[0011] Optionally, the bearing seat includes a first support plate and a second support plate arranged in parallel and spaced apart, and the two are connected by a plurality of connecting rods; a connecting seat is provided on the first support plate, and a bearing rod is provided on the drone, the bearing rod and the connecting seat are rotatably connected, and the rotation axis is arranged along the length direction of the bearing seat.

[0012] Optionally, the clamping drive assembly includes a clamping gear, a rack and a clamping motor. The sliding seats are each provided with a rack. The racks on the two sliding seats of the same clamping assembly are arranged opposite to each other. The clamping motor is fixedly connected to the first support plate. The output shaft of the clamping motor passes through the second support plate and is coaxially fixedly connected to the clamping gear. The clamping gear is simultaneously meshed with the racks on the two sliding seats of the same clamping assembly.

[0013] Optionally, the vibration assembly includes a sinusoidal vibration mechanism and a pulse vibration mechanism, the pulse vibration mechanism includes a rotating seat and a knocking rod, the rotating seat is fixedly connected to the second support plate, the knocking rod is rotatably connected to the rotating seat, the rotating axis of the knocking rod is arranged along the length direction of the second support plate, the knocking rod rotates to knock on the optical cable, and a pulse drive assembly for driving the knocking rod to rotate is also provided on the second support plate.

[0014] Optionally, the pulse drive assembly includes a convex rod, an abutment plate and a knocking motor, the convex rod is rotatably connected to the second support plate, and its rotation axis is arranged along the length direction of the second support plate; the knocking motor is used to drive the convex rod to rotate; the abutment plate is fixedly connected to the knocking rod and is located on the moving path of the convex rod.

[0015] Optionally, a torsion spring is further provided on the rotating shaft of the knocking rod, and the torsion spring is used to drive the knocking rod to rotate. When the torsion spring is in a natural state, the knocking rod abuts against the second support plate.

[0016] Optionally, the sinusoidal vibration mechanism includes a shell, which is fixedly connected to the second support plate, and two mutually meshing vibration gears are rotatably connected in the shell. Eccentric blocks are coaxially fixedly connected to the vibration gears, and one of the vibration gears is connected to a sinusoidal motor for driving itself to rotate through a flexible coupling.

[0017] In a second aspect, the present application also provides a method for locating a power communication optical cable fault, which adopts the following technical solution;

[0018] A method for locating a power communication optical cable fault comprises the following steps:

[0019] S1. Control the drone to fly over the optical cable;

[0020] S2, driving the knocking rod to rotate away from the second support plate by the knocking motor, and fine-tuning the drone body again so that the optical cable is located between the knocking rod and the second support plate;

[0021] S3, driving the two arc-shaped clamping plates to approach each other through the clamping motor to clamp the optical cable;

[0022] S4, driving the optical cable to vibrate through a sinusoidal vibration mechanism or a pulse vibration mechanism;

[0023] S5. Calculate the distance between the current position and the fault point according to the change of the optical phase at the corresponding position caused by the vibration;

[0024] S6. Gradually reduce the distance to the fault point and determine the location of the optical cable fault point

[0025] In summary, this application includes the following beneficial technical effects:

[0026] The present application arranges a clamping component and a vibration component, and after reaching the optical cable position through the flight control of the UAV, the optical cable is clamped by the clamping component, and then the optical cable is driven to vibrate by the vibration component, and the optical phase is driven to change by vibrating the optical cable, so as to determine the distance between the position of the UAV and the optical cable fault point at this time, and then the specific location of the fault point can be determined by continuously reducing the distance; the step of manually knocking and vibrating the optical cable is eliminated, a lot of travel time is saved, and the maintenance efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an overall structural diagram of a drone and a bearing seat in a device for locating a power communication optical cable fault in the present application;

[0028] Figure 2 yes Figure 1 The overall structure diagram of the clamping assembly and the vibration assembly on the middle bearing seat;

[0029] Figure 3 This is an overall enlarged view of the arc-shaped clamping block in the clamping assembly;

[0030] Figure 4 yes Figure 2 The overall structure diagram of the medium pulse vibration mechanism;

[0031] Figure 5 yes Figure 2 The overall structure diagram of the sinusoidal vibration mechanism.

[0032] Description of reference numerals:

[0033] 1. UAV; 11. Load-bearing rod; 2. Load-bearing seat; 21. First support plate; 22. Second support plate; 221. Through slot; 23. Connecting seat; 24. Connecting rod; 25. Guide rail; 3. Clamping assembly; 31. Sliding seat; 32. Arc clamping block; 321. Rubber pad; 322. Pressure sensor; 33. Rack; 34. Clamping gear; 35. Clamping motor; 4. Pulse vibration mechanism; 41. Rotating seat; 42. Knocking rod; 43. Torsion spring; 44. Protruding rod; 45. Abutment plate; 46. Knocking motor; 5. Sine vibration mechanism; 51. Housing; 52. Vibration gear; 53. Eccentric block. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The embodiment of the present application discloses a device for locating power communication optical cable faults; the device includes an unmanned aerial vehicle 1, and a bearing seat 2 is rotatably connected to the bottom of the unmanned aerial vehicle 1 through a bearing rod 11 and a connecting seat 23, and the rotation axis is arranged along the length direction of the bearing seat 2; wherein the bearing seat 2 includes a first support plate 21 and a second support plate 22, which are connected by a plurality of connecting rods 24, one end of the connecting rod 24 is provided with a thread, and the other end is fixedly connected to the second support plate 22, and the threaded end passes through the second support plate 22 and is connected with a nut; the connecting seat 23 is arranged on the first support plate 21, the bearing rod 11 is fixedly connected to the bottom of the unmanned aerial vehicle 1, and the connecting seat 23 is rotatably connected to the bearing rod 11.

[0036] Two clamping assemblies 3 for clamping the optical cable are also provided on the bearing seat 2, and the two clamping assemblies 3 are arranged in parallel and at intervals along the bearing length direction; the clamping assembly 3 includes two parallel sliding seats 31, and the second supporting plate 22 is provided with a guide rail 25 along its own width direction, and the sliding seat 31 is slidably connected to the guide rail 25, and an arc clamping plate is provided on the sliding seat 31, and a rubber pad 321 and a pressure sensor 322 are provided on the inner side of the arc clamping plate; the two arc clamping plates are close to each other to clamp the optical cable; a clamping motor 35 is fixed on the first supporting plate 21, and a through groove 221 is opened on the second supporting plate 22, and the output shaft of the clamping motor 35 passes through the through groove 221 and is coaxially fixedly connected with a clamping gear 34; relative racks 33 are provided on the two sliding seats 31, and the clamping gear 34 is meshed with the rack 33. Therefore, when the clamping motor 35 is working, the sliding seat 31 is driven to slide through the gear rack 33, thereby driving the two arc clamping blocks 32 to approach each other to clamp the optical cable.

[0037] A vibration component for driving the optical cable to vibrate is also provided on the second support plate 22, and the vibration component includes a pulse vibration mechanism 5 and a sinusoidal vibration mechanism 4, both of which can make the optical cable vibrate at different frequencies; wherein the pulse vibration mechanism 4 includes a rotating seat 41 and a knocking rod 42, the rotating seat 41 is fixedly connected to the second support plate 22, the knocking rod 42 is rotatably connected to the rotating seat 41, and the rotation axis of the knocking rod 42 is arranged along the width direction of the second support plate 22. At the same time, a pulse driving component for driving the knocking rod 42 to rotate to knock the optical cable is also provided on the second support plate 22.

[0038] In the embodiment of the present application, the pulse drive assembly includes a protruding rod 44, an abutment plate 45 and a knocking motor 46. The knocking motor 46 is fixedly connected to the second support plate 22, and its output shaft is arranged along the width direction of the second support plate 22. The protruding rod 44 is fixedly connected to the output shaft of the knocking motor 46 and is offset. At the same time, an empty groove for the protruding rod 44 to rotate is also provided on the second support plate 22; the abutment plate 45 is fixedly connected to the side wall of the knocking rod 42, and the abutment plate 45 is located at the protruding rod 44 is on the rotation path of the knocking rod 42; a torsion spring 43 is also provided on the rotating seat 41, and the torsion spring 43 is located on the steering shaft of the knocking rod 42. When the torsion spring 43 is in a natural state, the knocking rod 42 abuts against the second support plate 22; therefore, when the protruding rod 44 rotates and abuts against the abutting plate 45, it will drive the knocking rod 42 to rotate away from the second support plate 22; when the protruding rod 44 leaves the abutting plate 45, the knocking rod 42 quickly rotates and knocks the optical cable under the action of the torsion spring 43, generating vibration on the optical cable.

[0039] The sinusoidal vibration mechanism 5 includes a shell 51, which is fixedly connected to the second support plate 22. Two meshing vibration gears 52 are rotatably connected in the shell 51, and an eccentric block 53 is coaxially fixedly connected to the vibration gear 52; the rotating shaft of one of the vibration gears 52 is connected to the sinusoidal motor through a flexible coupling; when the vibration gear 52 rotates, due to the existence of the mass of the eccentric block 53, a periodic centrifugal force is generated, so that the shell 51 produces an exciting effect. The magnitude of the exciting force is the combined force of the centrifugal forces of the two eccentric blocks 53, is the mass of the eccentric block 53, is the eccentricity, is the angular velocity of rotation, and is time. As a method of active vibration excitation, the sinusoidal vibration mechanism 5 is used to drive the clamped optical cable to reciprocate rapidly, so that the optical cable produces sinusoidal vibration. The frequency and magnitude of the vibration can be adjusted by changing the frequency and amplitude of the electrical control signal.

[0040] The present application also discloses a method for locating a fault in a power communication optical cable, which should include the above-mentioned device and comprises the following steps:

[0041] S1, control the drone 1 to fly over the optical cable;

[0042] S2, driving the knocking rod 42 to rotate away from the second support plate 22 by the knocking motor 46, and fine-tuning the drone 1 body again so that the optical cable is located between the knocking rod 42 and the second support plate 22;

[0043] S3, driving the two arc-shaped clamping plates to approach each other through the clamping motor 35 to clamp the optical cable;

[0044] S4, driving the optical cable to vibrate through a sinusoidal vibration mechanism or a pulse vibration mechanism;

[0045] S5. Calculate the distance between the current position and the fault point according to the change of the optical phase at the corresponding position caused by the vibration;

[0046] S6. Gradually reduce the distance to the fault point and determine the location of the optical cable fault point.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for locating faults in power communication optical cables, characterized in that: The invention comprises an unmanned aerial vehicle (1), wherein a bearing seat (2) is provided below the unmanned aerial vehicle (1), a vibration component and two clamping components (3) are provided on the bearing seat (2), the clamping component (3) is used to clamp the optical cable, and the vibration component is used to vibrate the optical cable; The two clamping assemblies (3) are arranged in parallel and spaced apart along the length direction of the bearing seat (2). The clamping assembly (3) comprises two sliding seats (31) arranged in parallel and spaced apart. The sliding seat (31) is slidably connected to the bearing seat (2) along the width direction of the bearing seat (2). The sliding seat (31) is provided with an arc-shaped clamping plate. The two arc-shaped clamping plates are close to each other to clamp the optical cable. The clamping assembly (3) also comprises a clamping driving assembly for driving the two sliding seats (31) to slide.

2. The device for locating a power communication optical cable fault according to claim 1, characterized in that: The bearing seat (2) comprises a first supporting plate (21) and a second supporting plate (22) which are arranged in parallel and spaced apart, and are connected via a plurality of connecting rods (24); a connecting seat (23) is provided on the first supporting plate (21), and a bearing rod (11) is provided on the drone (1); the bearing rod (11) and the connecting seat (23) are rotatably connected, and the rotation axis is arranged along the length direction of the bearing seat (2).

3. The device for locating a power communication optical cable fault according to claim 2, characterized in that: The clamping drive assembly comprises a clamping gear (34), a rack (33) and a clamping motor (35); the sliding seats (31) are each provided with a rack (33); the racks (33) on the two sliding seats (31) of the same clamping assembly (3) are arranged opposite to each other; the clamping motor (35) is fixedly connected to the first supporting plate (21); the output shaft of the clamping motor (35) passes through the second supporting plate (22) and is coaxially fixedly connected to the clamping gear (34); the clamping gear (34) is simultaneously meshed with the racks (33) on the two sliding seats (31) of the same clamping assembly (3).

4. The device for locating a fault in a power communication optical cable according to claim 3, characterized in that: The vibration assembly comprises a sinusoidal vibration mechanism (5) and a pulse vibration mechanism (4); the pulse vibration mechanism (4) comprises a rotating seat (41) and a knocking rod (42); the rotating seat (41) is fixedly connected to the second support plate (22); the knocking rod (42) is rotatably connected to the rotating seat (41); the rotation axis of the knocking rod (42) is arranged along the length direction of the second support plate (22); the knocking rod (42) rotates to knock the optical cable; and a pulse driving assembly for driving the knocking rod (42) to rotate is also provided on the second support plate (22).

5. The device for locating a fault in a power communication optical cable according to claim 4, characterized in that: The pulse drive assembly comprises a protruding rod (44), an abutting plate (45) and a knocking motor (46); the protruding rod (44) is rotatably connected to the second supporting plate (22), and its rotation axis is arranged along the length direction of the second supporting plate (22); the knocking motor (46) is used to drive the protruding rod (44) to rotate; the abutting plate (45) is fixedly connected to the knocking rod (42) and is located on the moving path of the protruding rod (44).

6. The device for locating a power communication optical cable fault according to claim 5, characterized in that: A torsion spring (43) is also provided on the rotating shaft of the knocking rod (42), and the torsion spring (43) is used to drive the knocking rod (42) to rotate. When the torsion spring (43) is in a natural state, the knocking rod (42) abuts against the second supporting plate (22).

7. The device for locating faults in power communication optical cables according to claim 6, characterized in that: The sinusoidal vibration mechanism (5) comprises a shell (51), the shell (51) being fixedly connected to the second support plate (22), two mutually meshing vibration gears (52) being rotatably connected in the shell (51), and eccentric blocks (53) being coaxially fixedly connected to the vibration gears (52), wherein one of the vibration gears (52) is connected to a sinusoidal motor for driving the vibration gear (52) to rotate via a flexible coupling.

8. A method for locating a fault in a power communication optical cable, comprising the device for locating a fault in a power communication optical cable as claimed in claim 7, characterized in that The steps include: S1. Control the drone (1) to fly over the optical cable; S2, driving the knocking rod (42) to rotate away from the second support plate (22) by means of the knocking motor (46), and fine-tuning the drone (1) body again so that the optical cable is located between the knocking rod (42) and the second support plate (22); S3, driving the two arc-shaped clamping plates to approach each other to clamp the optical cable by means of a clamping motor (35); S4, driving the optical cable to vibrate through a sinusoidal vibration mechanism or a pulse vibration mechanism; S5. Calculate the distance between the current position and the fault point according to the change of the optical phase at the corresponding position caused by the vibration; S6. Gradually reduce the distance to the fault point and determine the location of the optical cable fault point.

Images