A detection and positioning device and optical cable system for buried optical cables

Abstract

This utility model discloses a detection and positioning device and system for buried optical cables, relating to the field of optical cable positioning technology. It addresses the technical problems of current optical cable detection equipment being significantly affected by interference from the surrounding environment and having low positioning accuracy. The detection and positioning device includes: a signal transmitter, a grounding electrode assembly, and a signal receiver. The signal transmitter includes a grounding port and a transmitting port, the transmitting port being adapted to connect to one end of the optical cable under test; the signal transmitter is adapted to emit a frequency signal; the grounding electrode assembly includes a first grounding electrode and a second grounding electrode, the first grounding electrode being connected to the grounding port, and the second grounding electrode being connected to the other end of the optical cable under test; the signal receiver is adapted to receive the frequency signal emitted by the signal transmitter and determine the position of the optical cable based on the strength of the received frequency signal.

Description

Technical Field

[0001] This utility model relates to the field of optical cable positioning technology, and in particular to a detection and positioning device and optical cable system for buried optical cables. Background Technology

[0002] As the demand for optical cables increases daily, more and more optical cables are being buried underground, leading to complex and intricate wiring and thus greater problems. To avoid damage to optical cables during construction, it is often necessary to accurately locate the buried optical cables.

[0003] Currently, commonly used optical cable detection equipment on the market includes cable tapping machines, Radiodetectors, and 3M detectors. Among them, cable tapping machines work by tapping the optical cable, converting the vibration signals on the fiber into sound and images for display, thereby distinguishing and locating the target optical cable. However, cable tapping machines are greatly affected by interference from the surrounding environment of the optical cable and have relatively low positioning accuracy.

[0004] For example, if there are other cables or metal objects around the optical cable, they may interfere with the propagation and detection of the vibration signal, leading to misjudgments by the cable-tapping machine. If the optical cable is buried too deep, the vibration signal will gradually attenuate during propagation, and the cable-tapping machine may have difficulty receiving a signal of sufficient strength, or the received signal may be distorted, affecting the accurate determination of the optical cable's location. Furthermore, cable-tapping machines can usually only determine the approximate location of the optical cable, and it is difficult to accurately determine detailed information such as the burial depth. Utility Model Content

[0005] The purpose of this utility model is to provide a detection and positioning device and optical cable system for buried optical cables, which aims to solve the technical problems of current optical cable detection equipment being greatly affected by the surrounding environment of the optical cable and having low positioning accuracy.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, this utility model provides a detection and positioning device for buried optical cables, comprising: a signal transmitter, a grounding electrode assembly, and a signal receiver. The signal transmitter includes a grounding port and a transmitting port, the transmitting port being adapted to connect to one end of the optical cable under test; the signal transmitter is adapted to emit a frequency signal; the grounding electrode assembly includes a first grounding electrode and a second grounding electrode, the first grounding electrode being connected to the grounding port, and the second grounding electrode being connected to the other end of the optical cable under test; the signal receiver is adapted to receive the frequency signal emitted by the signal transmitter, and determine the position of the optical cable based on the strength of the received frequency signal.

[0008] The detection and positioning device in this application utilizes a signal transmitter to emit a frequency signal, which is transmitted through the optical cable under test. A signal receiver receives the frequency signal and determines the location of the optical cable based on the signal strength. When the signal transmitter injects a specific frequency signal into the optical cable under test, the signal propagates along the cable. Since the optical cable acts as a conductor for signal transmission, the signal has a relatively stable propagation path and characteristics when transmitted within it. By detecting the signal strength at different locations, the signal receiver can determine the direction and specific location of the optical cable. Thus, this detection and positioning device can accurately locate buried optical cables using a signal receiver. For straight-laid optical cables, the positioning error can be controlled within a small range, meeting the accuracy requirements for optical cable positioning in most engineering scenarios.

[0009] Furthermore, this detection and positioning device is environmentally adaptable. Since its working principle primarily relies on signal transmission and reception within the optical cable, it can still operate normally despite changes in the surrounding environment, such as the cable's depth or the presence of metal objects nearby. This enhances the device's reliability and accuracy in various environments, better meeting the needs of practical engineering applications.

[0010] In some embodiments, the detection and positioning device further includes a controller, which is electrically connected to the signal transmitter and is adapted to control the opening and closing of the signal transmitter.

[0011] In some embodiments, the detection and positioning device further includes an electronic device electrically connected to a controller, adapted to remotely control the opening and closing of a signal transmitter via the controller.

[0012] In some embodiments, the electronic device includes a smartwatch and / or a mobile phone. Since smartwatches and mobile phones are common portable electronic devices, this greatly improves the user experience and portability of the buried optical cable detection and positioning device.

[0013] In some embodiments, the frequency signal transmitted by the signal transmitter is 98Hz, 128Hz, or 512Hz.

[0014] In some embodiments, the frequency signal transmitted by the signal transmitter is 3Hz+6Hz+128Hz or 4Hz+8Hz+128Hz.

[0015] Secondly, this utility model provides an optical cable system, including: an optical cable and a detection and positioning device for the buried optical cable described in the first aspect; one end of the optical cable is connected to a transmitting port, and the other end is connected to a second grounding electrode.

[0016] It should be noted that the technical effects of the second implementation method can be found in the technical effects of the corresponding implementation method in the first aspect, and will not be repeated here.

[0017] In some embodiments, the optical cable includes: a steel core, an optical fiber, and a sheath, wherein the steel core is connected to a transmitting port; the optical fiber is adapted to transmit optical signals; and the sheath is disposed on the outer periphery of the optical fiber and the optical fiber.

[0018] In some embodiments, the optical cable includes: an optical fiber, a sheath, and an outer armor. The optical fiber is adapted to transmit optical signals; the sheath is fitted around the outer periphery of the optical fiber; the outer armor is fitted around the outer periphery of the sheath, and the outer armor is made of metal. The outer armor is connected to a second grounding electrode.

[0019] In some embodiments, the optical cable includes: a first optical cable segment and a second optical cable segment; the optical cable system further includes: a junction box electrically connected to the first optical cable segment and the second optical cable segment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A structural frame diagram of a detection and positioning device provided in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the structure of an optical cable system provided in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of another optical cable system provided in an embodiment of this application.

[0024] Figure label:

[0025] 1000-Fiber Optic Cable System

[0026] 100 - Detection and positioning device; 200 - Optical cable; 201 - First optical cable; 202 - Second optical cable; 203 - First section of optical cable; 204 - Second section of optical cable; 300 - Junction box;

[0027] 10 - Signal transmitter; 11 - Grounding port; 12 - Transmitting port;

[0028] 20 - Grounding electrode assembly; 21 - First grounding electrode; 22 - Second grounding electrode;

[0029] 30 - Signal Receiver;

[0030] 40 - Controller;

[0031] 50 - Electronic devices;

[0032] 60-Fiber optic cable test stake. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or relative positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in actual application, provided that the relative positional relationship shown in the accompanying drawings is satisfied.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In embodiments of this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0038] In this embodiment of the invention, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" or "for example" in this embodiment of the invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0039] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0040] Please see Figure 1 and Figure 2 This application provides a buried optical cable detection and positioning device 100, including: a signal transmitter 10, a grounding electrode assembly 20 and a signal receiver 30.

[0041] The signal transmitter 10 includes a grounding port 11 and a transmitting port 12, the transmitting port 12 being adapted to connect to one end of the optical cable under test; the signal transmitter 10 is adapted to emit frequency signals. Specifically, the signal transmitter 10 incorporates a high-precision frequency synthesis module and a signal modulation circuit to ensure the accuracy and stability of each frequency signal. The signal transmitter 10 is adapted to generate and transmit specific frequency signals.

[0042] Optionally, the signal transmitter 10 can transmit a combined frequency signal, for example, 3Hz+6Hz+128Hz or 4Hz+8Hz+128Hz. In this way, the ultra-low frequency signal (3Hz, 4Hz, 6Hz, 8Hz), with its long wavelength characteristics, possesses strong diffraction and penetration capabilities, thus effectively bypassing obstacles in complex geological environments and achieving stable long-distance propagation. The 128Hz intermediate frequency signal combines a certain degree of penetration with transmission efficiency, allowing for rapid feedback of detection results. The combination of these two provides a signal basis for optical cable location detection.

[0043] Optionally, the signal transmitter 10 can also transmit a single-frequency signal, for example, the single-frequency signal can be 98Hz, 128Hz or 512Hz.

[0044] In addition, the signal receiver 30 is responsible for receiving the frequency signals emitted by the signal transmitter 10 and transmitted via optical fiber. The signal receiver 30 can capture weak signals through a high-sensitivity receiving antenna and signal acquisition circuit, ensuring effective signal reception at different distances and in different environments.

[0045] Furthermore, the grounding electrode assembly 20 includes a first grounding electrode 21 and a second grounding electrode 22. The first grounding electrode 21 is connected to the grounding port 11, meaning that the exposed conductive part of the electrical device of the first grounding electrode 21 is grounded to achieve connection with the ground. The second grounding electrode 22 is connected to the other end of the optical cable under test. The signal receiver 30 is adapted to receive the frequency signal emitted by the signal transmitter 10 and determine the position of the optical cable based on the strength of the received frequency signal.

[0046] The detection and positioning device 100 of this application embodiment uses a signal transmitter 10 to emit a frequency signal, which is transmitted through the optical cable under test. A signal receiver 30 receives the frequency signal and determines the location of the optical cable based on the signal strength. When the signal transmitter 10 injects a specific frequency signal into the optical cable under test, the signal propagates along the cable. Since the optical cable acts as a conductor for signal transmission, the signal has a relatively stable propagation path and characteristics when transmitted within it. By detecting the signal strength at different locations, the signal receiver 30 can determine the direction and specific location of the optical cable. Thus, the detection and positioning device 100 can accurately locate buried optical cables using the signal receiver 30. For straight-laid optical cables, the positioning error can be controlled within a small range, meeting the accuracy requirements for optical cable positioning in most engineering scenarios.

[0047] Furthermore, the detection and positioning device 100 possesses environmental adaptability. Since its working principle primarily relies on signal transmission and reception within the optical cable, the detection and positioning device 100 can still operate normally despite changes in the surrounding environment, such as the cable's depth or the presence of metal objects nearby. This enhances the reliability and accuracy of the detection device in various environments, better meeting the needs of practical engineering applications. In addition, multiple signal receivers 30 can be configured, allowing simultaneous detection within the measured area, thereby improving detection efficiency and shortening detection time.

[0048] In some embodiments of this application, the detection and positioning device 100 further includes a controller 40. Optionally, the controller 40 may be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a programmable logic device (PLD), a microprocessor, a microcontroller 40, or any combination thereof. The controller 40 may also be other devices with processing functions, such as circuits, devices, or software modules, and this application does not impose any limitations on this.

[0049] Optionally, the controller 40 can also be a microcontroller unit (MCU). An MCU, also known as a single-chip microcomputer, is a central processing unit (CPU) with its frequency and specifications appropriately reduced. It integrates peripheral interfaces such as memory, timer, USB, A / D converter, UART, PLC, DMA, and even LCD driver circuitry onto a single chip, forming a chip-level computer that can perform different combinations of control for different applications.

[0050] In addition, the controller 40 is electrically connected to the signal transmitter 10, which is suitable for controlling the opening and closing of the signal transmitter 10. This improves the intelligence and convenience of operating the detection and positioning device 100. Before actual detection operations, operators do not need to directly contact the complex circuit switches of the signal transmitter 10; they only need to issue commands through the operating interface of the controller 40 to start the signal transmitter 10, simplifying the operation process.

[0051] In some embodiments, the detection and positioning device 100 further includes an electronic device 50, which is electrically connected to the controller 40 and is adapted to remotely control the opening and closing of the signal transmitter 10 via the controller 40. Since the electronic device 50 is electrically connected to the controller 40, the opening and closing of the signal transmitter 10 can be remotely controlled via the electronic device 50, thus expanding the operating range of the detection and positioning device 100.

[0052] For example, in detection work, operators need to manually operate the signal transmitter 10 near it or control it through a short-range controller 40. However, in this embodiment of the application, after setting up electronic equipment 50, whether it is a region that is difficult for personnel to reach, such as high mountains and dense forests, or a place with potential dangers (such as high radiation, flammable and explosive environments), operators can remotely send commands to the controller 40 via the network from a safe area using electronic equipment 50 such as mobile phones, watches or dedicated terminals, thereby controlling the start and stop of the signal transmitter 10.

[0053] In some embodiments of this application, the electronic device 50 includes an electronic watch and / or a mobile phone. For example, when the electronic device is a mobile phone, the user can open the operating software on the phone to remotely control the signal transmitter to turn on, then adjust the signal receiver to the frequency corresponding to the frequency signal emitted by the signal transmitter, and then detect the location and burial depth of the optical cable under test.

[0054] Among them, the electronic watch is small and lightweight and can be worn on the wrist at any time. When the operator is conducting detection work, there is no need to carry any other control equipment. He can quickly view the status of the signal transmitter 10 and send control commands just by looking at the watch screen.

[0055] As a powerful smart terminal, the mobile phone boasts a larger screen and a richer interactive interface. Through a specially developed app, operators can not only remotely control the signal transmitter 10, but also view detailed detection data in real time (such as signal strength, output current and voltage signals of the detection and positioning device 100), and generate detection reports. Furthermore, the mobile phone has excellent network connectivity, ensuring rapid transmission of remote control commands across 4G, 5G, and Wi-Fi networks, giving it a significant advantage in network adaptability compared to other electronic devices 50. Moreover, mobile phones are almost indispensable in daily life, eliminating the need for additional dedicated control equipment, thus reducing usage costs and the burden of carrying heavy equipment.

[0056] Since electronic watches and mobile phones are common portable electronic devices 50, this can greatly improve the user experience and portability of the buried optical cable detection and positioning device 100.

[0057] In some embodiments of this application, the electronic device may also be a tablet computer, a laptop computer, or other electronic device; however, this application does not limit the scope of the electronic device to this type.

[0058] In some embodiments, the frequency signal transmitted by the signal transmitter 10 is 98Hz, 128Hz, or 512Hz. 98Hz is a low-frequency signal, which has strong diffraction and penetration capabilities when propagating in media such as soil. Because low-frequency signals have a longer wavelength, they can better bypass obstacles or non-uniform media to continue propagating. Thus, in environments with high soil conductivity and numerous underground metal pipelines or other interference, the 98Hz signal can propagate relatively stably along the optical cable, allowing the signal receiver 30 to receive a clearer signal, which helps in accurately determining the direction and location of the optical cable.

[0059] The 128Hz frequency signal falls within the low-to-mid-frequency transition range, possessing both good penetration capability and transmission efficiency. Compared to the 98Hz signal, the 128Hz signal has a slightly shorter wavelength, resulting in relatively lower propagation loss in the same medium and an improved signal transmission rate, which can shorten detection time to some extent. In urban underground pipe network environments, the 128Hz signal can penetrate soil to a certain depth while maintaining good signal strength and clarity, making it suitable for medium-distance fiber optic cable detection tasks. Furthermore, this frequency signal is relatively less affected by external electromagnetic interference, maintaining relatively stable signal transmission even when facing common electromagnetic interference sources such as low-voltage power lines.

[0060] Furthermore, 512Hz is a mid-frequency signal, which offers high positioning accuracy. Due to its shorter wavelength and stronger signal directivity, it can more accurately determine the specific location of optical cables during close-range detection, making it suitable for scenarios requiring high-precision positioning, such as secondary confirmation before precise excavation of already located optical cables. In addition, the 512Hz signal has a faster transmission rate, enabling rapid feedback of detection results and improving detection efficiency.

[0061] In some embodiments, the frequency signal transmitted by the signal transmitter 10 is 3Hz+6Hz+128Hz or 4Hz+8Hz+128Hz.

[0062] Since 3Hz, 4Hz, 6Hz, and 8Hz are all ultra-low frequency (ULF) signals, these signals, due to their extremely long wavelengths, exhibit strong penetrating power in optical cable break detection. When optical cables are buried underground and traverse different geological layers, ULF signals can effectively penetrate media such as soil and rock, and can stably transmit to the break location even in complex environmental interference. The superposition of ULF signals, when encountering impedance changes at the break point, results in differences in the degree of reflection and attenuation of signals of different frequencies. This difference provides crucial clues for determining the break location. Meanwhile, the 128Hz intermediate frequency (IF) signal combines a certain degree of penetration and transmission efficiency. After the ULF signal initially locates the break area, it can quickly perform refined detection of that area, utilizing its high positioning accuracy to precisely pinpoint the break location and shorten detection time.

[0063] Furthermore, during the optical cable break detection process, the combined frequency signal is emitted from the signal transmitter 10 and propagates along the optical cable. When the signal reaches the break point, signal reflection occurs due to the disruption of the optical cable structure's integrity. The long-distance propagation capability of the ultra-low frequency signal ensures that the signal can reach a relatively distant break point location, and its reflection characteristics at different media and break points allow the signal receiver 30 to preliminarily determine the approximate range of the break point by analyzing the frequency intensity, phase changes, and other characteristics of the reflected signal. The 128Hz intermediate frequency signal, within the range defined by the ultra-low frequency signal, utilizes its precise directivity and high transmission rate to perform secondary confirmation and precise measurement of the break point location. In this way, by having the signal transmitter 10 emit multi-frequency signals, compared to single-frequency signal detection, this embodiment of the application can obtain more comprehensive information about the break point, reduce misjudgments caused by environmental interference or signal attenuation, and significantly improve the accuracy and reliability of break point location.

[0064] Secondly, please refer to Figure 2 and Figure 3The present invention also provides an optical cable system 1000, including: an optical cable 200 and a buried optical cable detection and positioning device 100 described in the first aspect; one end of the optical cable 200 is connected to the transmitting port 12 and the other end is connected to the second grounding electrode 22.

[0065] It should be noted that the technical effects of the second implementation method can be found in the technical effects of the corresponding implementation method in the first aspect, and will not be repeated here.

[0066] It should be noted that in the optical cable system 1000, there can be multiple sets of grounding electrode components 20, and similarly, there can also be multiple electronic devices 50.

[0067] For example, such as Figure 3 As shown, two sets of grounding electrode assemblies 20 are provided, two electronic devices 50 are provided, and the optical cable 200 is divided into a first optical cable 201 and a second optical cable 202 that are disconnected. One end of both the first optical cable 201 and the second optical cable 202 is connected to the transmitting port 12 of the signal transmitter 10, and the grounding port 11 of the signal transmitter 10 is grounded. The controller 40 is electrically connected to the signal transmitter 10. Specifically, the first grounding electrode 21 of one grounding electrode assembly 20 is connected to one side of the grounding port 11, and the second grounding electrode 22 is connected to the other end of the first optical cable 201. The first grounding electrode 21 of the other grounding electrode assembly 20 is connected to the other side of the grounding port 11, and the second grounding electrode 22 is connected to the other end of the second optical cable 202. Both electronic devices 50 can be electrically connected to the controller 40 to remotely control the opening and closing of the signal transmitter 10.

[0068] In this way, the signal transmitter 10 can simultaneously transmit signals to two optical cables 200, enabling a single detection length of over 60 km, thus increasing the detection range of the detection and positioning device 100. Furthermore, the optical cable system 1000 allows multiple people to simultaneously control the controller 40, enhancing the functionality of the optical cable system 1000.

[0069] In some embodiments, the optical cable 200 includes: a steel core, an optical fiber, and a sheath, wherein the steel core is connected to the transmitting port 12; the optical fiber is adapted to transmit optical signals; and the sheath is disposed on the outer periphery of the optical fiber and the optical fiber.

[0070] The steel core is connected to the transmitting port 12, providing a stable channel for signal transmission of the detection and positioning device 100. The steel core has good conductivity and mechanical strength, and as a signal transmission carrier, it effectively reduces signal loss and improves the stability and reliability of signal transmission compared to transmission directly through other parts of the optical cable 200. Furthermore, during the transmission of combined frequency signals, the propagation characteristics of different frequency signals are relatively consistent within the steel core, reducing signal distortion and interference caused by differences in the transmission medium. Simultaneously, the mechanical strength of the steel core ensures the structural stability of the optical cable 200 during laying and use, preventing damage to the internal structure of the optical cable 200 due to external pulling or squeezing, which could affect signal transmission.

[0071] In some embodiments, the optical cable 200 includes: an optical fiber, a sheath, and an outer armor. The optical fiber is adapted to transmit optical signals; the sheath is fitted around the outer periphery of the optical fiber; the outer armor is fitted around the outer periphery of the sheath, and the outer armor is made of metal. The outer armor is connected to the second grounding electrode 22.

[0072] Since the outer armor is made of metal and connected to the second grounding electrode 22, it serves as the signal transmission path for the detection and positioning device 100. The metal outer armor has good conductivity, enabling stable conduction of combined frequency signals. Furthermore, during signal transmission, the outer armor acts as a shielding layer, reducing the impact of external electromagnetic interference on the signal and making the signal transmission more stable. This helps the signal receiver 30 receive the signal more accurately, thereby improving the accuracy of the optical cable 200 breakpoint location. In addition, the connection between the outer armor and the second grounding electrode 22 creates a more complete loop for the entire optical cable system 1000, optimizing the operating performance of the signal transmitter 10 and ensuring stable signal output.

[0073] In some embodiments, the optical cable 200 includes: a first optical cable 203 and a second optical cable 204; the optical cable system 1000 further includes: a junction box 300, which is electrically connected to the first optical cable 203 and the second optical cable 204.

[0074] By dividing the optical cable 200 into optical cable 203 and a second optical cable 204, and connecting them through the junction box 300, troubleshooting and maintenance become more efficient and convenient. For example, when the optical cable system 1000 malfunctions, the detection and positioning device 100 can be used to determine whether the fault lies in the first optical cable 203, the second optical cable 200, or the junction box 300. If the fault is in a specific optical cable 200 segment, the fault area can be quickly narrowed down; if the fault is in the junction box 300, targeted testing and repair can be performed directly. Furthermore, during routine maintenance, if a section of optical cable 200 needs to be inspected or replaced, only the connection of the junction box 300 needs to be disconnected; the entire optical cable 200 segment does not need to be processed, reducing maintenance workload and time costs.

[0075] In some embodiments of this application, the optical cable system 1000 further includes an optical cable test post 60, which is used to facilitate the positioning of the optical cable and the testing of the optical cable.

[0076] For example, during the installation of optical cables, which are usually buried underground, they are not easy to observe and locate directly. Test stakes can serve as clear ground markers, helping maintenance personnel to quickly locate the position of the optical cable and clearly indicate the direction, start, end, and turning points of the optical cable line, thus facilitating the maintenance and management of the optical cable.

[0077] For example, by installing monitoring equipment inside the optical cable test pile 60, the insulation resistance values ​​of the optical cable outer armor and steel core to the ground can be detected and displayed in real time. It can also monitor environmental parameters such as temperature and humidity of the optical cable, as well as whether there is external damage. When abnormal data is detected, an alarm can be issued in time to remind maintenance personnel to check and maintain.

[0078] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A detection and positioning device for buried optical cables, characterized in that, include: A signal transmitter includes a grounding port and a transmitting port, the transmitting port being adapted to connect to one end of the optical cable under test; The signal transmitter is adapted to emit frequency signals; The grounding electrode assembly includes a first grounding electrode and a second grounding electrode, wherein the first grounding electrode is connected to the grounding port and the second grounding electrode is connected to the other end of the optical cable under test; A signal receiver is adapted to receive frequency signals emitted by the signal transmitter and determine the position of the optical cable based on the strength of the received frequency signals.

2. The detection and positioning device according to claim 1, characterized in that, Also includes: A controller, electrically connected to the signal transmitter, is adapted to control the opening and closing of the signal transmitter.

3. The detection and positioning device according to claim 2, characterized in that, Also includes: An electronic device, electrically connected to the controller, is adapted to remotely control the opening and closing of the signal transmitter via the controller.

4. The detection and positioning device according to claim 3, characterized in that, The electronic devices include electronic watches and / or mobile phones.

5. The detection and positioning device according to any one of claims 1-4, characterized in that, The frequency signal transmitted by the signal transmitter is 98Hz, 128Hz or 512Hz.

6. The detection and positioning device according to any one of claims 1-4, characterized in that, The frequency signal transmitted by the signal transmitter is 3Hz+6Hz+128Hz or 4Hz+8Hz+128Hz.

7. An optical cable system, characterized in that, include: The detection and positioning device for buried optical cables according to any one of claims 1-6; An optical cable, one end of which is connected to the transmitting port and the other end of which is connected to the second grounding electrode.

8. The optical cable system according to claim 7, characterized in that, The optical cable includes: A steel core is connected to the transmitting port; Optical fiber is suitable for transmitting optical signals; A sheath is fitted over the optical fiber and the outer periphery of the optical fiber.

9. The optical cable system according to claim 7, characterized in that, The optical cable includes: Optical fiber is suitable for transmitting optical signals; A sheath is fitted around the outer periphery of the optical fiber; An outer armor is fitted around the outer periphery of the protective sleeve. The outer armor is made of metal and is connected to the second grounding electrode.

10. The optical cable system according to claim 7, characterized in that, The optical cable includes: a first optical cable segment and a second optical cable segment; the optical cable system further includes: a junction box, which is electrically connected to the first optical cable segment and the second optical cable segment.

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