An outer jacketed optical cable positioning device

Abstract

This application provides a positioning device for an external optical cable within a sheath, comprising: a positioning signal generating system and a positioning signal receiving system electrically connected to each other; the positioning signal generating system is used to generate positioning signals at different locations within the sheath; the positioning signal receiving system is used to receive all the positioning signals and determine the time difference between their arrival; and the position information of the external optical cable is calculated based on the time difference. By generating positioning signals at different locations within the sheath and measuring the time difference between these signals arriving at the receiving system, the position information of the external optical cable can be accurately calculated.

Description

Technical Field

[0001] This disclosure relates to the field of seismic exploration and development technology, and in particular to an external optical cable positioning device for exploration and detection in oil and gas wells. Background Technology

[0002] Since the emergence of seismic exploration technology in the 1930s, seismic recording instruments and seismic geophysical exploration technology have undergone continuous development and innovation. In this nearly 100-year evolution, seismic acquisition equipment, as the core component of seismic geophysical exploration technology, has been closely linked to technological progress. Its technical level, performance indicators, and application effectiveness directly determine the quality and efficiency of seismic data acquisition.

[0003] With the diversification of exploration and development objectives, seismic geophysical exploration technology is constantly expanding into new fields, and the demand for seismic acquisition equipment receiving systems has also changed significantly. Recently, Distributed Fiber Acoustic Sensing (DAS) technology has shown broad application potential in the field of seismic exploration.

[0004] DAS technology detects sound or vibration signals within the audio range based on the phase change of coherent Rayleigh scattered light. It not only reflects the intensity of sound or vibration through phase amplitude but also enables linear quantitative measurement of the phase and frequency information of sound or vibration events. This characteristic gives it significant advantages in fields such as oil exploration and monitoring of acoustic vibration processes during oil and shale gas fracturing.

[0005] However, current fiber optic cable burial and positioning technologies still face several unresolved issues. The two main existing methods for fiber optic cable radiation avoidance—combining customized protectors and crawlers with gravity and magnetic field anomalies for positioning, and adding a signal generator during cable laying—both suffer from insufficient positioning accuracy. The former relies on interpreting gravity and magnetic field data, making it susceptible to environmental interference; the latter requires a battery-powered signal generator, completing measurements within one to two weeks of cable laying, which is not only complex to operate but also carries a high risk of fiber breakage, increasing production costs and limiting the widespread adoption and application of the technology.

[0006] Therefore, improving the positioning accuracy and efficiency of optical cables and reducing the fiber breakage rate have become urgent technical challenges to be solved. Summary of the Invention

[0007] This disclosure provides an external optical cable positioning device for subsequent oil and gas exploration and measurement. By determining the position of the external optical cable, the device can avoid the optical cable during perforation construction, ensuring that the optical fiber core inside the cable is not broken.

[0008] This disclosure provides a positioning device for an external optical cable under a sheath, comprising: a positioning signal generating system and a positioning signal receiving system electrically connected to each other;

[0009] The positioning signal generating system is used to generate positioning signals at different locations inside the casing.

[0010] The positioning signal receiving system is used to receive all the positioning signals and determine the time difference of arrival of the positioning signals; and to calculate the position information of the optical cable outside the sheath based on the time difference.

[0011] In one possible design, the positioning signal generation system includes: a ground control module for signal generation and a signal generation module that are electrically connected to each other;

[0012] The signal generating ground control module is used to generate control commands for controlling the positioning signal;

[0013] The signal generating module is used to generate the positioning signal at a specified time and location specified in the control command.

[0014] In one possible design, the positioning signal receiving system includes: an electrically connected DAS fiber optic signal receiving module and a signal receiving control module;

[0015] The DAS fiber optic signal receiving module is used to receive the positioning signal;

[0016] The signal receiving control module is used to determine the time difference reached between the positioning signals, and to calculate the position information of the outer optical cable based on the time difference.

[0017] In one possible design, the signal generation ground control module includes: a first main controller, a first subsystem communication unit, and a first downlink communication unit;

[0018] The first main controller is configured to receive external instructions and / or operation requests, and generate control instructions for the external instructions and / or operation requests based on the external instructions and / or operation requests;

[0019] The first subsystem communication unit is connected to the first main controller and is used to realize data interaction between the first main controller and the signal receiving control module.

[0020] The first downlink communication unit is connected to the first main controller and is used to realize data interaction between the main controller and the signal generation module.

[0021] In one possible design, the signal generation ground control module further includes: a first storage unit connected to the first main controller;

[0022] The first storage unit is used to store the instruction, as well as the specified time and specified location in the instruction.

[0023] In one possible design, the signal generation module includes: a controller, a communication unit, a signal conversion and driving unit, and a signal output unit;

[0024] The controller is configured to generate unit control instructions containing the specified time and the specified position according to the control instructions;

[0025] The communication unit is connected to the controller and is used to realize data interaction between the controller and the signal generation ground control device;

[0026] The signal conversion driving unit is connected to the controller and is used to generate a level start signal at the specified position at the specified time in response to the unit control command;

[0027] The signal output unit is connected to the signal conversion drive unit and is used to convert the level start signal into a vibration signal; the vibration signal is the positioning signal.

[0028] In one possible design, the signal generation module further includes a second storage unit connected to the controller;

[0029] The second storage unit is used to store the parameters of the positioning signal, the transmission record, and the device status of the signal generating device.

[0030] In one possible design, the DAS fiber optic signal receiving module includes: a laser generator, a laser modem, and a data processor;

[0031] The laser generator is connected to the laser modem and is used to generate a laser beam;

[0032] The laser modem is used to demodulate the reflected laser beam;

[0033] The data processor is connected to the laser modem and is used to determine the time difference of arrival of the positioning signal based on the demodulated laser beam; and to calculate the position information of the outer optical cable based on the time difference.

[0034] In one possible design, the signal receiving control module includes: a second main controller, a second subsystem communication unit, and a second downlink communication unit;

[0035] The second main controller is used to determine the time difference reached between the positioning signals, and to calculate the position information of the outer optical cable based on the time difference;

[0036] The subsystem communication unit is used to realize data interaction between the second main controller and the signal generation ground control module;

[0037] The second downlink communication unit is used to realize data interaction between the second main controller and the DAS fiber optic signal receiving module.

[0038] In one possible design, the signal receiving control module further includes: a display unit and a third storage unit connected to the second main controller;

[0039] The display unit is used to display the location information of the outer sheath optical cable and the device status of the positioning signal receiving system;

[0040] The third storage unit is used to store the location information of the outer optical cable of the sheath.

[0041] As can be seen from the above technical solutions, this disclosure has the following advantages:

[0042] This disclosure provides a positioning device for an external optical cable within a sheath, comprising: a positioning signal generating system and a positioning signal receiving system electrically connected to each other; the positioning signal generating system is used to generate positioning signals at different locations within the sheath; the positioning signal receiving system is used to receive all the positioning signals and determine the time difference between their arrival; and the position information of the external optical cable is calculated based on the time difference. This positioning device combines advanced signal processing technology and precise event measurement technology.

[0043] First, by generating positioning signals at different locations inside the sheath and measuring the time difference between these signals arriving at the receiving system, the position information of the optical cable outside the sheath can be accurately calculated.

[0044] Secondly, the generation and reception of positioning signals are carried out in real time, so the location information of the optical cable can be monitored and obtained in real time, which facilitates timely adjustment and maintenance.

[0045] In addition, the device generates and receives signals inside the sleeve, without direct contact with the external optical cable, reducing physical interference and potential damage to the optical cable.

[0046] Furthermore, the device is suitable for optical cable positioning in various environments and conditions, including underground, underwater, or other complex environments, and has wide applicability.

[0047] Finally, because the device is an electrically connected system, it can be easily integrated with existing monitoring and management systems, facilitating data transmission and processing. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 An exemplary structural schematic diagram of the external optical cable positioning device provided in Embodiment 1 of this disclosure is shown;

[0050] Figure 2 A schematic diagram of the structure of the external optical cable positioning device provided in Embodiment 2 of this disclosure is shown as an example;

[0051] Figure 3 A schematic diagram of the positioning signal generation system of the sleeve-mounted optical cable positioning device provided in Embodiment 2 of this disclosure is shown as an example;

[0052] Figure 4 An exemplary schematic diagram of the positioning signal receiving system structure of the sleeve external optical cable positioning device provided in Embodiment 2 of this disclosure is shown;

[0053] Figure 5 A schematic diagram of the structure of the external optical cable positioning device provided in Embodiment 3 of this disclosure is shown as an example;

[0054] Figure 6 A schematic diagram of the positioning signal generation system of the sleeve-mounted optical cable positioning device provided in Embodiment 3 of this disclosure is shown as an example.

[0055] Figure 7 An exemplary schematic diagram of the signal generation ground control module structure of the sleeve external optical cable positioning device provided in Embodiment 3 of this disclosure is shown.

[0056] Figure 8 A schematic diagram of the signal generation module structure of the sleeve-mounted optical cable positioning device provided in Embodiment 3 of this disclosure is shown as an example;

[0057] Figure 9 An exemplary schematic diagram of the positioning signal receiving system of the sleeve-mounted optical cable positioning device provided in Embodiment 3 of this disclosure is shown;

[0058] Figure 10 An exemplary schematic diagram of the DAS fiber optic signal receiving module structure of the external optical cable positioning device provided in Embodiment 3 of this disclosure is shown.

[0059] Figure 11 A schematic diagram of the signal receiving and control module structure of the external optical cable positioning device provided in Embodiment 3 of this disclosure is shown as an example. Detailed Implementation

[0060] This disclosure provides an external optical cable positioning device for subsequent oil and gas exploration and measurement. By determining the position of the external optical cable, the device can avoid the optical cable during perforation construction, ensuring that the optical fiber core inside the cable is not broken.

[0061] To make the inventive objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0062] Example 1

[0063] Figure 1 An exemplary structural schematic diagram of the external optical cable positioning device provided in Embodiment 1 of this disclosure is shown, such as... Figure 1 As shown, in this example, the optical cable positioning device for the control tube is characterized by comprising: a positioning signal generating system and a positioning signal receiving system electrically connected to each other;

[0064] The positioning signal generating system 11 is used to generate positioning signals at different locations inside the casing.

[0065] The positioning signal receiving system 12 is used to receive all the positioning signals and determine the time difference of arrival of the positioning signals; and calculate the position information of the optical cable outside the sheath based on the time difference.

[0066] In this embodiment, the positioning signal generating system 11 generates positioning signals in multiple directions, ensuring that the signals cover all areas within the sheath and providing sufficient data support for subsequent location calculations. The positioning signal receiving system 12 calculates the specific location of the optical cable outside the sheath by accurately measuring the time difference between transmission and reception of the positioning signal and applying specific algorithms such as triangulation or the Doppler effect.

[0067] The above embodiment discloses an external optical cable positioning device, comprising: a positioning signal generating system 11 and a positioning signal receiving system 12 electrically connected to each other; the positioning signal generating system 11 is used to generate positioning signals at different locations within the sheath; the positioning signal receiving system 12 is used to receive all the positioning signals and determine the time difference between their arrival; and the position information of the external optical cable is calculated based on the time difference. This positioning device combines advanced signal processing technology and precise event measurement technology.

[0068] First, by generating positioning signals at different locations inside the sheath and measuring the time difference between these signals arriving at the receiving system, the position information of the optical cable outside the sheath can be accurately calculated.

[0069] Secondly, the generation and reception of positioning signals are carried out in real time, so the location information of the optical cable can be monitored and obtained in real time, which facilitates timely adjustment and maintenance.

[0070] In addition, the device generates and receives signals inside the sleeve, without direct contact with the external optical cable, reducing physical interference and potential damage to the optical cable.

[0071] Furthermore, the device is suitable for optical cable positioning in various environments and conditions, including underground, underwater, or other complex environments, and has wide applicability.

[0072] Finally, because the device is an electrically connected system, it can be easily integrated with existing monitoring and management systems, facilitating data transmission and processing.

[0073] Example 2

[0074] Figure 2 An exemplary structural schematic diagram of the external optical cable positioning device provided in Embodiment 2 of this disclosure is shown. Figure 3 A schematic diagram of the positioning signal generation system of the sleeve-mounted optical cable positioning device provided in Embodiment 2 of this disclosure is shown as an example. Figure 4 An exemplary schematic diagram of the positioning signal receiving system structure of the sleeve-mounted optical cable positioning device provided in Embodiment 2 of this disclosure is shown, such as... Figure 2 As shown, the external optical cable positioning device includes: a positioning signal generating system 21 and a positioning signal receiving system 22 that are electrically connected to each other;

[0075] The positioning signal generating system 21 is used to generate positioning signals at different locations inside the casing.

[0076] The positioning signal receiving system 22 is used to receive all the positioning signals and determine the time difference of arrival of the positioning signals; and calculate the position information of the optical cable outside the sheath based on the time difference.

[0077] like Figure 3 As shown, the positioning signal generation system 21 includes: a signal generation ground control module 211 and a signal generation module 212 that are electrically connected to each other;

[0078] The signal generating ground control module 211 is used to generate control commands for controlling the positioning signal;

[0079] The signal generation module 212 is used to generate the positioning signal at a specified time and location in the control command.

[0080] In this embodiment of the application, the positioning signal generation system 21 consists of a signal generation ground control module 211 and a signal generation module 212.

[0081] The ground control module 211 for signal generation can generate control commands for controlling positioning signals. These control commands include parameters such as the specified time and location of signal generation.

[0082] The signal generating module 212 can generate a positioning signal at a specified time and location according to the control command issued by the ground control module 211.

[0083] like Figure 4 As shown, the positioning signal receiving system 22 includes: a DAS fiber optic signal receiving module 221 and a signal receiving control module 222 that are electrically connected;

[0084] The DAS fiber optic signal receiving module 221 is used to receive the positioning signal;

[0085] The signal receiving control module 222 is used to determine the time difference reached between the positioning signals and to calculate the position information of the outer optical cable based on the time difference.

[0086] In this embodiment, the positioning signal receiving system 22 consists of a DAS fiber optic signal receiving module 221 and a signal receiving control module 222.

[0087] Among them, the DAS fiber optic signal receiving module 221 adopts DAS technology to sensitively capture the positioning signal emitted by the signal generating module 212.

[0088] The signal receiving control module 222 can determine the time difference of the arrival of the positioning signal and calculate the position information of the optical cable outside the sheath based on the time difference.

[0089] It should be noted that DAS technology, or Distributed Fiber Optic Acoustic Sensing technology, uses the phase of coherent Rayleigh scattered light rather than its intensity to detect signals such as sound or vibration within the audio range. It can not only use the magnitude of the phase amplitude to provide information on the intensity of sound or vibration events, but also use linear quantitative measurements to obtain information on the phase and frequency of sound or vibration events.

[0090] The above embodiment discloses an external optical cable positioning device, comprising: a positioning signal generating system 21 and a positioning signal receiving system 22 electrically connected to each other; the positioning signal generating system 21 is used to generate positioning signals at different locations within the sheath; the positioning signal receiving system 22 is used to receive all the positioning signals and determine the time difference between their arrival; and the position information of the external optical cable is calculated based on the time difference. This positioning device combines advanced signal processing technology and precise event measurement technology.

[0091] First, by generating positioning signals at different locations inside the sheath and measuring the time difference between these signals arriving at the receiving system, the position information of the optical cable outside the sheath can be accurately calculated.

[0092] Secondly, the generation and reception of positioning signals are carried out in real time, so the location information of the optical cable can be monitored and obtained in real time, which facilitates timely adjustment and maintenance.

[0093] In addition, the device generates and receives signals inside the sleeve, without direct contact with the external optical cable, reducing physical interference and potential damage to the optical cable.

[0094] Furthermore, the device is suitable for optical cable positioning in various environments and conditions, including underground, underwater, or other complex environments, and has wide applicability.

[0095] Furthermore, since the device is an electrically connected system, it can be easily integrated with existing monitoring and management systems, facilitating data transmission and processing.

[0096] Meanwhile, the signal generation ground control module 211 generates detailed control commands, enabling the positioning signal generation system to accurately transmit signals under different environments and / or different needs, thereby improving the adaptability and controllability of the external optical cable positioning device.

[0097] Finally, by combining DAS technology, the accuracy of positioning signal reception is improved, and the system's ability to resist interference is enhanced, ensuring the reliability and accuracy of the positioning signal.

[0098] Example 3

[0099] Figure 5 An exemplary structural schematic diagram of the external optical cable positioning device provided in Embodiment 3 of this disclosure is shown. Figure 6 A schematic diagram of the positioning signal generation system of the sleeve-mounted optical cable positioning device provided in Embodiment 3 of this disclosure is shown as an example. Figure 7 An exemplary schematic diagram of the signal generation ground control module structure of the sleeve-mounted optical cable positioning device provided in Embodiment 3 of this disclosure is shown. Figure 8A schematic diagram of the signal generation module structure of the sleeve-mounted optical cable positioning device provided in Embodiment 3 of this disclosure is shown as an example. Figure 9 An exemplary schematic diagram of the positioning signal receiving system structure of the sleeve-mounted optical cable positioning device provided in Embodiment 3 of this disclosure is shown. Figure 10 An exemplary schematic diagram of the DAS fiber optic signal receiving module structure of the external optical cable positioning device provided in Embodiment 3 of this disclosure is shown. Figure 11 An exemplary schematic diagram of the signal receiving control module structure of the sleeve-mounted optical cable positioning device provided in Embodiment 3 of this disclosure is shown, such as... Figure 5 As shown, the external optical cable positioning device includes: a positioning signal generating system 31 and a positioning signal receiving system 32 that are electrically connected to each other;

[0100] The positioning signal generating system 31 is used to generate positioning signals at different locations inside the casing.

[0101] The positioning signal receiving system 32 is used to receive all the positioning signals and determine the time difference of arrival of the positioning signals; and calculate the position information of the optical cable outside the sheath based on the time difference.

[0102] like Figure 6 As shown, the positioning signal generation system 31 includes: a signal generation ground control module 311 and a signal generation module 312 that are electrically connected to each other;

[0103] The signal generating ground control module 311 is used to generate control commands for controlling the positioning signal;

[0104] The signal generation module 312 is used to generate the positioning signal at a specified time and location in the control command.

[0105] like Figure 7 As shown, the signal generation ground control module 311 includes: a first main controller 3111, a first subsystem communication unit 3112, and a first downlink communication unit 3113;

[0106] The first main controller 3111 is configured to receive external instructions and / or operation requests, and generate control instructions for the external instructions and / or operation requests according to the external instructions and / or operation requests;

[0107] The first subsystem communication unit 3112 is connected to the first main controller 3111 to realize data interaction between the first main controller and the signal receiving control module;

[0108] The first downlink communication unit 3113 is connected to the first main controller 3111 to realize data interaction between the first main controller 3111 and the signal generation module 312.

[0109] In this embodiment, the signal generation ground control module 311 consists of a first main controller 3111, a first subsystem communication unit 3112, and a first downlink communication unit 3113.

[0110] Among them, the first main controller 3111, as the core of the signal generation ground control module, is responsible for processing all external input commands, generating precise control commands, and ensuring that the signal generation module 312 can generate positioning signals at a specified time and location.

[0111] The first subsystem communication unit 3112 can ensure data synchronization between the signal generating module and the signal receiving module, enabling the system to work in coordination and improving the accuracy and reliability of positioning.

[0112] The first downlink communication unit 3113 can transmit the control commands generated by the first main controller to the signal generation module, ensuring that the signal generation module can accurately generate positioning signals according to the commands.

[0113] In an optional embodiment, the signal generation ground control module 311 further includes: a first storage unit connected to the first main controller 3111;

[0114] The first storage unit is used to store the instruction, as well as the specified time and specified location in the instruction.

[0115] In this embodiment, the first storage unit can provide data storage function, which facilitates subsequent instruction management and fault diagnosis, and ensures that the system can continue to execute previous tasks after power failure or restart.

[0116] like Figure 8 As shown, the signal generation module 312 includes: a controller 3121, a communication unit 3122, a signal conversion drive unit 3123, and a signal output unit 3124;

[0117] The controller 3121 is configured to generate unit control instructions containing the specified time and the specified position according to the control instructions;

[0118] The communication unit 3122 is connected to the controller 3121 and is used to realize data interaction between the controller 3121 and the signal generating ground control device 311.

[0119] The signal conversion driving unit 3123 is connected to the controller 3121 and is used to generate a level start signal at the specified position at the specified time in response to the unit control command;

[0120] The signal output unit 3124 is connected to the signal conversion drive unit 3123 and is used to convert the level start signal into a vibration signal; the vibration signal is the positioning signal.

[0121] In this embodiment, the signal generation module 312 consists of a controller 3121, a communication unit 3122, a signal conversion drive unit 3123, and a signal output unit 3124.

[0122] Among them, the controller 3121, as the core of the signal generation module, is responsible for interpreting the control instructions received from the first main controller, generating specific unit control instructions, and ensuring that the signal is generated at the specified time and location.

[0123] The communication unit 3122 ensures that the controller can receive commands from the ground control module and can also provide feedback on the status information of the signal generation module.

[0124] The signal conversion drive unit 3123 can convert the unit control commands generated by the controller into actual level signals, triggering the signal output unit to generate positioning signals.

[0125] The signal output unit 3124 can convert the level signal into a vibration signal suitable for transmission, ensuring that the signal can be effectively transmitted to the outer sheath optical cable.

[0126] In an optional embodiment, the signal generation module 312 further includes a second storage unit connected to the controller 3121;

[0127] The second storage unit is used to store the parameters of the positioning signal, the transmission record, and the device status of the signal generating device.

[0128] In this embodiment, the second storage unit provides data storage functionality, facilitating subsequent data analysis and troubleshooting, and ensuring the stability and reliability of system operation.

[0129] like Figure 9 As shown, the positioning signal receiving system 32 includes: a DAS fiber optic signal receiving module 321 and a signal receiving control module 322 that are electrically connected;

[0130] The DAS fiber optic signal receiving module 321 is used to receive the positioning signal;

[0131] The signal receiving control module 322 is used to determine the time difference reached between the positioning signals and to calculate the position information of the outer optical cable based on the time difference.

[0132] like Figure 10As shown, the DAS fiber optic signal receiving module 321 includes: a laser generator 3211, a laser modem 3212, and a data processor 3213;

[0133] The laser generator 3211 is connected to the laser modem 3212 and is used to generate a laser beam;

[0134] The laser modem 3212 is used to demodulate the reflected laser beam;

[0135] The data processor 3213 is connected to the laser modem 3212 and is used to determine the time difference of arrival of the positioning signal based on the demodulated laser beam; and to calculate the position information of the outer optical cable based on the time difference.

[0136] In this embodiment, the DAS fiber optic signal receiving module 321 consists of a laser generator 3211, a laser modem 3212, and a data processor 3213.

[0137] Among them, the laser generator 3211, as the core component of the signal receiving module, is responsible for generating a laser beam for detection. The laser beam is transmitted in the optical fiber and will be reflected and scattered by environmental changes (such as vibration).

[0138] The laser modem 3212 can convert reflected laser beams into electrical signals, extract vibration information from them, and provide raw data for data processing.

[0139] The data processor 3213 can analyze the demodulated data, calculate the time difference of signal arrival, and finally determine the location information of the optical cable to ensure the accuracy and reliability of positioning.

[0140] like Figure 11 As shown, the signal receiving control module 322 includes: a second main controller 3221, a second subsystem communication unit 3222, and a second downlink communication unit 3223;

[0141] The second main controller 3221 is used to determine the time difference reached between the positioning signals, and to calculate the position information of the outer optical cable based on the time difference;

[0142] The subsystem communication unit 3222 is used to realize data interaction between the second main controller 3221 and the signal generation ground control module 311;

[0143] The second downlink communication unit 3223 is used to realize data interaction between the second main controller 3221 and the DAS fiber optic signal receiving module 321.

[0144] In this embodiment, the signal receiving control module 322 consists of a second main controller 3221, a second subsystem communication unit 3222, and a second downlink communication unit 3223.

[0145] Among them, the second main controller 3221, as the core of the signal receiving control module, is responsible for processing the data transmitted from the data processor, calculating the specific location of the optical cable, and performing further data analysis and processing.

[0146] The second subsystem communication unit 3222 can ensure that the second main controller can receive instructions from the ground control module, and at the same time can feed back the status information of the receiving control module to realize the coordinated operation of the system.

[0147] The second downlink communication unit 3223 can transmit the control commands generated by the second main controller to the DAS fiber optic signal receiving module, ensuring that the signal receiving module can accurately receive and process signals according to the commands.

[0148] In an optional embodiment, the signal receiving control module 322 further includes: a display unit and a third storage unit connected to the second main controller;

[0149] The display unit is used to display the location information of the outer sheath optical cable and the device status of the positioning signal receiving system;

[0150] The third storage unit is used to store the location information of the outer optical cable of the sheath.

[0151] In this embodiment, the display unit can provide real-time visual feedback, which facilitates operators in monitoring and managing the system's operating status, thereby improving the system's operability and reliability.

[0152] The third storage unit provides data storage functionality, facilitating subsequent data analysis and troubleshooting, and ensuring the stability and reliability of system operation.

[0153] The above embodiment discloses an external optical cable positioning device, comprising: a positioning signal generating system 31 and a positioning signal receiving system 32 electrically connected to each other; the positioning signal generating system 31 is used to generate positioning signals at different locations within the sheath; the positioning signal receiving system 32 is used to receive all the positioning signals and determine the time difference between their arrival; and the position information of the external optical cable is calculated based on the time difference. This positioning device combines advanced signal processing technology and precise event measurement technology.

[0154] First, by generating positioning signals at different locations inside the sheath and measuring the time difference between these signals arriving at the receiving system, the position information of the optical cable outside the sheath can be accurately calculated.

[0155] Then, the generation and reception of positioning signals are carried out in real time, so the location information of the optical cable can be monitored and obtained in real time, which facilitates timely adjustment and maintenance.

[0156] Secondly, the device generates and receives signals inside the sleeve. For example, the signal generation ground control module 311 and the signal receiving control module 322 exchange data through a subsystem communication unit, ensuring overall system coordination and linkage. This eliminates the need for direct contact with the external optical cable, reducing physical interference and potential damage to the cable.

[0157] Furthermore, the device is suitable for optical cable positioning in various environments and conditions, including underground, underwater, or other complex environments, and has wide applicability.

[0158] Furthermore, since the device is an electrically connected system, it can be easily integrated with existing monitoring and management systems, facilitating data transmission and processing.

[0159] Meanwhile, the signal generation ground control module 211 generates detailed control commands, enabling the positioning signal generation system to accurately transmit signals under different environments and / or different needs, thereby improving the adaptability and controllability of the external optical cable positioning device.

[0160] In addition, by combining DAS technology, the accuracy of positioning signal reception is improved, and the system's ability to resist interference is enhanced, ensuring the reliability and accuracy of the positioning signal.

[0161] Finally, the data processor 3213 demodulates the laser beam and accurately calculates the time difference of the positioning signal arrival, further improving the positioning accuracy and reliability.

[0162] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0163] In the several embodiments provided in this application, it should be understood that the methods, apparatuses, electronic devices, and storage media disclosed herein can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0164] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0165] Furthermore, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0166] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this disclosure. The aforementioned readable storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0167] The above-described embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A positioning device for an external optical cable in a sheath, characterized in that, include: A positioning signal generating system and a positioning signal receiving system that are electrically connected to each other; The positioning signal generating system is used to generate positioning signals at different locations inside the casing. The positioning signal receiving system is used to receive all the positioning signals and determine the time difference of arrival of the positioning signals; and to calculate the position information of the optical cable outside the sheath based on the time difference.

2. The sleeve-mounted optical cable positioning device according to claim 1, characterized in that, The positioning signal generation system includes: a ground control module for signal generation and a signal generation module that are electrically connected to each other; The signal generating ground control module is used to generate control commands for controlling the positioning signal; The signal generating module is used to generate the positioning signal at a specified time and location specified in the control command.

3. The sleeve-mounted optical cable positioning device according to claim 1, characterized in that, The positioning signal receiving system includes: an electrically connected DAS fiber optic signal receiving module and a signal receiving control module; The DAS fiber optic signal receiving module is used to receive the positioning signal; The signal receiving control module is used to determine the time difference reached between the positioning signals, and to calculate the position information of the outer optical cable based on the time difference.

4. The sleeve-mounted optical cable positioning device according to claim 3, characterized in that, The signal generation ground control module includes: a first main controller, a first subsystem communication unit, and a first downlink communication unit; The first main controller is configured to receive external instructions and / or operation requests, and generate control instructions for the external instructions and / or operation requests based on the external instructions and / or operation requests; The first subsystem communication unit is connected to the first main controller and is used to realize data interaction between the first main controller and the signal receiving control module. The first downlink communication unit is connected to the first main controller and is used to realize data interaction between the main controller and the signal generation module.

5. The sleeve-mounted optical cable positioning device according to claim 4, characterized in that, The signal generation ground control module further includes: a first storage unit connected to the first main controller; The first storage unit is used to store the instruction, as well as the specified time and specified location in the instruction.

6. The sleeve-mounted optical cable positioning device according to claim 2, characterized in that, The signal generation module includes: a controller, a communication unit, a signal conversion and driving unit, and a signal output unit; The controller is configured to generate unit control instructions containing the specified time and the specified position according to the control instructions; The communication unit is connected to the controller and is used to realize data interaction between the controller and the signal generation ground control device; The signal conversion driving unit is connected to the controller and is used to generate a level start signal at the specified position at the specified time in response to the unit control command; The signal output unit is connected to the signal conversion drive unit and is used to convert the level start signal into a vibration signal; the vibration signal is the positioning signal.

7. The sleeve-mounted optical cable positioning device according to claim 2, characterized in that, The signal generation module further includes: a second storage unit connected to the controller; The second storage unit is used to store the parameters of the positioning signal, the transmission record, and the device status of the signal generating device.

8. The sleeve-mounted optical cable positioning device according to claim 3, characterized in that, The DAS fiber optic signal receiving module includes: a laser generator, a laser modem, and a data processor; The laser generator is connected to the laser modem and is used to generate a laser beam; The laser modem is used to demodulate the reflected laser beam; The data processor is connected to the laser modem and is used to determine the time difference of arrival of the positioning signal based on the demodulated laser beam; and to calculate the position information of the outer optical cable based on the time difference.

9. The sleeve-mounted optical cable positioning device according to claim 3, characterized in that, The signal receiving control module includes: a second main controller, a second subsystem communication unit, and a second downlink communication unit; The second main controller is used to determine the time difference reached between the positioning signals, and to calculate the position information of the outer optical cable based on the time difference; The subsystem communication unit is used to realize data interaction between the second main controller and the signal generation ground control module; The second downlink communication unit is used to realize data interaction between the second main controller and the DAS fiber optic signal receiving module.

10. The sleeve-mounted optical cable positioning device according to claim 9, characterized in that, The signal receiving control module further includes: a display unit and a third storage unit connected to the second main controller; The display unit is used to display the location information of the outer sheath optical cable and the device status of the positioning signal receiving system; The third storage unit is used to store the location information of the outer optical cable of the sheath.

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