A method and system for rapid positioning of an optical cable route

Abstract

The application provides a kind of optical cable route's quick positioning method and system, method includes: setting the exciter of pre-set ID information under optical cable well lid, for exciter configuration pre-set frequency, and record the ID information of each exciter, pre-set frequency and the coordinate information of setting;Server sends activation instruction to activate all exciter, and exciter generates the sound signal of pre-set frequency in activation instruction;Optical cable sensing equipment receives and demodulates pre-set frequency, and pre-set frequency and optical cable setting distance are uploaded to server, to draw optical cable route line in combination with pre-recorded coordinate information.Compared with prior art, all exciter can be activated simultaneously in the application, all vibration conditions are analyzed, it is determined which exciter and its position on the optical cable to be positioned, and the coordinate information of each exciter is pre-stored, the route direction of optical cable route to be positioned can be calculated at one time, the efficiency of optical cable route positioning is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of optical fiber inspection, and more specifically, to a method and system for rapid positioning of optical cable routing. Background Technology

[0002] As a signal transmission channel, optical fiber lines are a core component of optical fiber communication systems. Optical fiber line faults are characterized by long duration, difficulty in repair, numerous hidden dangers, and high costs. Therefore, it is crucial to perform proper maintenance of optical fiber lines.

[0003] One of the most important tasks in optical cable line maintenance is the accurate collection of optical cable routing data. When the optical cable routing data is accurate, on the one hand, the maintenance unit can quickly locate the optical cable fault point based on the optical cable monitoring data, thereby greatly improving the speed of optical cable fault repair and maintenance and reducing communication interruption time. On the other hand, operators can have more accurate optical cable resource data, improve the utilization efficiency of optical fiber and reduce redundant investment.

[0004] Current methods for tracing fiber optic cable routes typically involve using a specific rubber hammer to tap manhole covers, roads, or utility poles, and then using sensors to detect vibrations within the cable. This approach suffers from low efficiency because manually tapping these surfaces to vibrate the fiber optic cable and collecting vibration data is crucial for route location. However, since the length of a single fiber optic cable to be located is often considerable, the area to be traced is very large, making manual tapping extremely inefficient. Summary of the Invention

[0005] The present invention aims to overcome at least one of the defects of the prior art and provide a method and system for rapid positioning of optical cable routes, so as to achieve efficient positioning of optical cable routes.

[0006] The technical solution adopted in this invention is:

[0007] This invention provides a method for rapid positioning of optical cable routes, the method comprising:

[0008] The server obtains the coordinate and ID information of each exciter; the exciter is used to be set in the corresponding optical cable well; the coordinate information is the location information of the optical cable well where the exciter is located.

[0009] The server configures a preset frequency for each exciter, so that each ID information corresponds to a preset frequency;

[0010] The server sends an activation command with the corresponding preset frequency to all the exciters based on the exciter's ID information, thereby activating all the exciters.

[0011] The exciter generates a sound signal of a corresponding preset frequency according to the received activation command;

[0012] The optical cable sensing device receives and demodulates the reflected light signal through the optical cable to be located to obtain the candidate frequencies and corresponding candidate distances of multiple candidate exciters; the reflected light signal is formed by the laser signal in the optical cable to be located being acted upon by the sound signal generated by the candidate exciter; the candidate exciter is an exciter installed in the optical cable well along the path of the optical cable to be located.

[0013] The optical fiber sensing device uploads the candidate frequencies and corresponding candidate distances of the multiple candidate exciters to the server.

[0014] The server obtains the ID information of each candidate exciter based on the candidate frequency of the plurality of candidate exciters, and extracts the coordinate information of each candidate exciter based on the ID information of each candidate exciter;

[0015] The server obtains the direction information of the optical cable to be located based on the coordinate information of each candidate exciter and the corresponding candidate distance.

[0016] Preferably, each exciter has a preset ID information, which is used to identify the corresponding exciter. When setting the exciter, the coordinate information corresponding to each exciter is recorded in the server according to the ID information. At the same time, a preset frequency is set for each exciter. This setting facilitates the determination of which exciter is vibrating based on the obtained vibration frequency, and further locates the coordinate position of the vibrating exciter. In addition, the distance of the vibrating exciter on the optical cable line can be obtained based on the propagation properties of the vibration signal on the optical cable line. Combined with the coordinate position of the exciter, it is possible to quickly... This system enables the location of the optical cable route. Furthermore, by generating vibrations through the exciter, which is connected to the server via a network, the server can simultaneously activate all the set exciters, eliminating the need for manual tapping of the manhole cover and significantly improving location efficiency. Simultaneously, the server can activate all the exciters at the same time, allowing them to vibrate and transmit information. Since the server has pre-recorded the coordinates of all the exciters, it can calculate the optical cable route based on the vibration of the exciters in one go, further improving the efficiency of optical cable location.

[0017] Furthermore, the activation instruction includes at least activation information and the preset frequency;

[0018] The exciter completes self-starting based on the activation information;

[0019] The exciter generates a sound signal with a corresponding vibration frequency according to the preset frequency.

[0020] The server activates the exciter via an activation command, enabling the exciter to respond quickly. Simultaneously, the activation command sets a preset frequency for the exciter, which corresponds to the exciter's ID information. This ensures that each exciter produces a different preset frequency, allowing for effective identification of the vibrating exciter. Furthermore, the server can set and adjust the preset frequency of each exciter according to actual needs, flexibly adjusting the preset frequency of each exciter to distinguish it from external noise frequencies and improve the accuracy of identification calculations.

[0021] Furthermore, the optical cable sensing device receives and demodulates the reflected light signal through the optical cable to be located to obtain candidate frequencies for multiple candidate vibration exciters, including:

[0022] The optical cable sensing device emits laser pulses to the optical cable to be located connected to it, collects the reflected light signals in the optical cable to be located, demodulates and restores the vibration frequency of the corresponding reflection point based on the collected reflected light signals, and if the vibration frequency exceeds the corresponding preset threshold, the vibration frequency is determined as the candidate frequency of the candidate exciter.

[0023] Preferably, the corresponding preset threshold is set according to each of the preset frequencies;

[0024] The Rayleigh scattering effect can effectively capture the reflected light signal generated by the vibration of the candidate exciter on the optical cable to be located. The vibration information is extracted based on the reflected light signal, and the vibration signal is converted into a candidate frequency generated by the candidate exciter. The candidate frequency is then uploaded to the server. By using the above preliminary judgment method, the amount of data uploaded to the server can be reduced. At the same time, the simple matching task is performed by the optical cable sensing device, reducing the processing load of the server and thus improving the speed of positioning calculation.

[0025] Furthermore, the optical fiber sensing device uploads the candidate frequencies and corresponding candidate distances of the plurality of candidate exciters to the server, including:

[0026] The optical fiber sensing device constructs a data frame based on the candidate frequency and corresponding candidate distance of the candidate exciter currently received and parsed, and sends the data frame to the server;

[0027] The data frame includes frame header information, detection frequency information, and location information;

[0028] The frame header information is the tag of the data frame;

[0029] The detection frequency information includes the detected candidate frequencies of the candidate exciters;

[0030] The location information includes the candidate distance corresponding to the candidate exciter.

[0031] Furthermore, the server sends the activation command to all the exciters via a wireless Internet of Things (IoT) connection.

[0032] The method further includes the server sending a shutdown command with a corresponding preset frequency to the exciter to shut down the exciter;

[0033] The shutdown command includes at least shutdown information and the preset frequency;

[0034] The actuator performs self-stop based on the shutdown information.

[0035] The present invention also provides a rapid optical cable route positioning system, the system comprising a server, an optical cable sensing device, and an exciter;

[0036] The server is used to record the ID information, preset frequency, and corresponding coordinate information of the exciter, and to send an activation command to the exciter to activate it.

[0037] The exciter is used to be installed in the corresponding optical cable well; the coordinate information is the location information of the optical cable well where the exciter is located; the preset frequency is the frequency set by the server for the exciter, and each ID information corresponds to one preset frequency; the exciter is used to modulate a sound signal with the corresponding vibration frequency according to the activation command sent by the server after receiving the activation command and apply it to the optical cable line in the corresponding optical cable well.

[0038] The optical cable sensing device is connected to the optical cable to be located and is used to emit laser pulses to the optical cable to be located, receive reflected light signals on the optical cable to be located, and analyze the reflected light signals to obtain candidate frequencies and corresponding candidate distances of multiple candidate exciters; the reflected light signals are formed by the laser signals in the optical cable to be located being acted upon by the sound signals generated by the candidate exciters; the candidate exciters are exciters installed in the optical cable wells along the path of the optical cable to be located.

[0039] The server is also communicatively connected to the optical cable sensing device. The server is also used to receive the candidate frequencies and corresponding candidate distances of the multiple candidate exciters obtained by the optical cable sensing device, obtain the ID information of each candidate exciter, extract the coordinate information of each candidate exciter based on the ID information of each candidate exciter, and obtain the optical cable routing information by combining the candidate distances corresponding to the candidate exciters.

[0040] Furthermore, the activation instruction includes at least activation information and the preset frequency;

[0041] The exciter performs self-starting based on the activation information;

[0042] The exciter generates a sound signal with a corresponding vibration frequency according to the preset frequency.

[0043] Furthermore, the optical fiber sensing device is used to analyze the reflected light signal to obtain candidate frequencies for multiple candidate exciters, specifically including:

[0044] The optical fiber sensing device is used to demodulate and restore the vibration frequency of the corresponding reflection point based on the reflected light signal. If the vibration frequency exceeds the corresponding preset threshold, the vibration frequency is determined as the candidate frequency of the candidate exciter.

[0045] Furthermore, the optical fiber sensing device includes a laser emitting module, a data acquisition module, a signal processing module, and a data transmission module;

[0046] The laser emitting module is connected to the optical cable to be positioned and is used to emit pulsed laser light to the optical cable to be positioned.

[0047] The data acquisition module is connected to the optical cable to be located and is used to acquire the reflected light signal in the optical cable to be located.

[0048] The signal processing module is connected to the data acquisition module and is used to reconstruct the vibration frequency in the sound signal based on the reflected light signal received by the data acquisition module. If the vibration frequency exceeds the corresponding preset threshold, the vibration frequency is determined as the candidate frequency of the candidate exciter, and the candidate distance corresponding to the candidate exciter is calculated.

[0049] The data transmission module is communicatively connected to the server and is used to upload the candidate frequencies and corresponding candidate distances of the obtained candidate exciters to the server.

[0050] Furthermore, the exciter includes a wireless IoT module, a vibration module, and a signal transmission module;

[0051] The wireless IoT module is communicatively connected to the server and is used to receive activation commands sent by the server.

[0052] The vibration module is connected to the wireless IoT module and is used to emit vibrations at a corresponding frequency according to the activation command.

[0053] The signal transmitting module is connected to the vibration module and is used to convert vibrations of the corresponding frequency into sound signals of the corresponding vibration frequency and transmit them.

[0054] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0055] 1. This invention improves the efficiency of optical cable line positioning by installing an exciter at the manhole cover of the optical cable well, which generates sound signals to affect the optical cable line in the well, replacing the traditional method of manual knocking.

[0056] 2. This invention sets a preset frequency for each exciter and records the preset frequency and set coordinate information of each exciter on a server. It can determine whether the vibration is generated by the preset frequency by the received frequency, and further obtain the set coordinate information of the exciter based on the preset frequency, thereby realizing the rapid positioning of the exciter.

[0057] 3. This invention can simultaneously activate all the set exciters via a network. The activated exciters simultaneously generate vibrations. The optical cable sensing device receives the candidate frequencies and corresponding candidate distances of the candidate exciters along the optical cable path to be located. The optical cable sensing device then transmits the candidate frequencies and corresponding candidate distances of the candidate exciters to the server. The server obtains the pre-recorded coordinate information of each exciter based on the uploaded candidate frequencies. Combined with the corresponding optical cable setting distances, the routing direction of the optical cable line can be directly calculated, greatly improving the efficiency of optical cable line positioning. Attached Figure Description

[0058] Figure 1 This is a flowchart of the steps of the present invention.

[0059] Figure 2 This is a system structure diagram of the present invention.

[0060] Attached diagram captions: Server 100, optical fiber sensing device 200, exciter 300, optical fiber to be located 400, wireless IoT 500. Detailed Implementation

[0061] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention. To better illustrate the following embodiments, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0062] Example 1

[0063] like Figure 1 As shown, this embodiment provides a method for rapid location of optical cable routing, the method comprising the following steps:

[0064] S1: The server obtains the coordinate and ID information of each exciter 300;

[0065] In this step, the ID information of the exciter is preset, and each exciter 300 corresponds to an ID. The information of the corresponding exciter 300 can be obtained by identifying the ID information. The exciter 300 is preset in the corresponding optical cable well, and the corresponding coordinate information is the location information of the optical cable well where the exciter 300 is located, specifically the GPS (Global Positioning System) information of the optical cable well. All the exciters 300 can be located on the map using the coordinate information. Specifically, the coordinate information and ID information of the exciter 300 can be stored in the database of the server 100. The server 100 can extract the corresponding coordinate information based on the ID information, and then locate the specific location of the exciter 300.

[0066] S2: The server 100 configures a preset frequency for each of the exciters 300, so that each ID information corresponds to a preset frequency;

[0067] In this step, each exciter 300 is configured with a different preset frequency, and these preset frequencies are not set consecutively. That is, a certain interval must be maintained between each preset frequency to reduce the possibility of two preset frequencies being identified as one during frequency restoration due to errors. Furthermore, the setting of each preset frequency should avoid being the same as conventional environmental noise, such as the vibration frequency generated by vehicle operation. Under the premise of satisfying the above conditions, each ID information can correspond to a preset frequency. The ID information of the exciter 300 can be obtained based on the value of the preset frequency, thus determining which exciter 300 it is. Since the ID information and corresponding coordinate information of each exciter 300 have been stored in the server 100 in step S1, the coordinate information set by the exciter 300 can be directly obtained through the preset frequency, achieving rapid positioning of the exciter 300.

[0068] S3: The server 100 sends an activation command with the corresponding preset frequency to all the exciters 300 according to the ID information of the exciter 300, so as to activate all the exciters 300.

[0069] Specifically, all the exciters 300 in this step can be all the exciters 300 in a candidate area, which can include the optical cable 400 to be located and other optical cable lines, or all the exciters 300 recorded in the server 100, or all the exciters 300 in a manually preset area, which includes the optical cable 400 to be located and other optical cable lines.

[0070] In addition, in this step, the server 100 can achieve communication connection with each of the actuators 300 through a 5G (5th Generation Mobile Communication Technology) network, a WiFi (wireless network communication technology) network, or a wireless Internet of Things (IoT) 500. Preferably, in this embodiment, the server 100 and each of the actuators 300 are connected by a wireless IoT 500. The wireless IoT 500 has the advantages of low setup cost, stable transmission, and multi-point control. Since a large number of actuators 300 need to be set up in this embodiment to achieve positioning, the wireless IoT 500 is very suitable for communication connection between the server 100 and each of the actuators 300 in this embodiment.

[0071] Furthermore, in this embodiment, the activation instruction includes at least activation information and the preset frequency. In a preferred embodiment, it also includes reserved information. The activation information, preset frequency, and reserved information can be implemented through instruction code fields, which are represented as activation field, frequency field, and reserved field, respectively. The number of bytes and the order of arrangement of each field can be set according to actual needs, and are not specifically limited here.

[0072] In one example, the activation field can be set to 1 byte in length, including an activation command code. The exciter 300 performs self-starting based on the received activation command code in the activation field. The frequency field can be set to 2 bytes in length, including a preset frequency corresponding to the exciter 300. The exciter 300 generates a sound signal with a corresponding vibration frequency based on the preset frequency. The server 100 controls the vibration frequency output by the exciter 300 according to actual needs through the activation command, which can flexibly adjust the vibration frequency so that the optical fiber sensing device 200 can better distinguish it from other environmental noises. In the above example, the activation command can also include a 1-byte reserved field. The reserved field is a reserved information field that can be used to transmit additional information to the exciter 300 through the server 100, or to supplement the vibration frequency information into the reserved field when the length of the frequency field is insufficient.

[0073] In some embodiments, the preset frequency can be set in each corresponding exciter 300. In the activation command, the frequency field can be omitted or the information content in the frequency field can be set to empty. When the exciter 300 receives the activation command, if it does not detect the corresponding frequency field or the content in the detection frequency field is empty, it will generate vibration according to its own preset frequency.

[0074] Additionally, the server 100 can send a shutdown command to each of the exciters 300; the shutdown command includes at least shutdown information and the preset frequency, and in a preferred embodiment, it also includes reservation information; wherein the shutdown information is recognized by the exciter 300, and the exciter 300 automatically stops based on the shutdown information. Referring to the activation command described above, the shutdown command can also be implemented through an instruction code field, corresponding to a shutdown field, a frequency field, and a reservation field; wherein the number of bytes and the order of arrangement of each field can be set according to actual needs, and are not specifically limited here.

[0075] The shutdown command can be sent by the server 100 to all the exciters 300 after obtaining the route of the optical cable 400 to be located, thereby shutting down the exciters 300 to save energy.

[0076] In addition, in this embodiment, the server 100 and each of the actuators 300 are connected via a network. Therefore, the server 100 can activate the actuators 300 as needed, either simultaneously or one by one. Preferably, in order to improve the positioning efficiency, the server 100 activates all the actuators 300 simultaneously via the network, that is, the server 100 sends activation instructions to all the actuators 300 simultaneously via the network.

[0077] S4: The exciter 300 generates a sound signal of the corresponding preset frequency according to the received activation instruction; after receiving the activation instruction, the exciter 300 automatically starts according to the content of the activation field of the activation instruction, and extracts the frequency value of the preset frequency in the frequency field, and then the exciter 300 generates a sound signal of the corresponding vibration frequency according to the frequency value.

[0078] S5: The optical cable sensing device 200 receives and demodulates the reflected light signal through the optical cable 400 to be positioned, and obtains the candidate frequencies and corresponding candidate distances of multiple candidate exciters; the candidate exciters are exciters set in the optical cable wells through which the optical cable 400 to be positioned passes; the reflected light signal is formed by the laser pulse in the optical cable 400 to be positioned being acted upon by the sound signal generated by the candidate exciter.

[0079] In this step, specifically, the optical cable sensing device 200 emits a pulsed laser towards the optical cable 400 to be positioned. The optical cable 400, affected by external influences, exhibits Rayleigh scattering. In step S4, the exciter 300 generates a sound signal corresponding to the vibration signal. This sound signal acts on the optical cable 400 in the optical cable well where it is located, causing Rayleigh scattering at the corresponding position on the optical cable 400. Consequently, a corresponding reflected light signal returns to the optical cable sensing device 200. Figure 2As shown, the exciters 300 that are not on the optical cable 400 to be positioned will not affect the optical cable 400 to be positioned, thereby obtaining the candidate exciters in the optical cable wells along the path of the optical cable 400 to be positioned; the optical cable sensing device 200 collects all the reflected light signals, analyzes the reflected light signals in the optical cable sensing device 200, and extracts the candidate frequencies of the candidate exciters. The specific steps are as follows: first, these reflected light signals are converted into electrical signals through photoelectric conversion, then the converted electrical signals are amplified, and then the amplified electrical signals are converted into digital signals through analog-to-digital conversion. After data acquisition and signal processing, the obtained digital signals are used to obtain the vibration waveform of each point on the optical cable 400 to be positioned, and then the corresponding vibration frequency, i.e., the sound signal, is obtained through Fourier transform. It is worth noting that the frequency spectrum obtained after Fourier transform is the frequency spectrum at that point. In order to make the result more accurate, the largest frequency can be taken as the vibration frequency of that point.

[0080] After obtaining the vibration frequencies of each point on the optical cable 400 to be positioned, preliminary screening is required. Specifically, the vibration frequency of each point is compared with a corresponding preset threshold, which is set according to each preset frequency. When the vibration frequency of a certain point exceeds the preset threshold, the vibration frequency of that point can be determined as the candidate frequency of the candidate exciter, and the position of that point on the optical cable 400 to be positioned is the position of the candidate exciter on the optical cable 400 to be positioned. Then, the candidate distance of each candidate exciter on the optical cable 400 to be positioned can be calculated by the attenuation of the light returned by the reflected light signal or the time difference between the return time and the transmission time.

[0081] S6: The optical fiber sensing device 200 uploads the candidate frequencies and corresponding candidate distances of the multiple candidate exciters to the server 100;

[0082] In this step, the optical fiber sensing device 200 uploads data to the server 100 via wired / wireless internet. Specifically, it uploads the candidate frequencies and corresponding candidate distances of each candidate exciter to the server 100 in the form of data frames. In this embodiment, the data frame includes frame header information, detection frequency information, and location information. The frame header information is the tag of the data frame, the detection frequency information includes the detected candidate frequencies of the candidate exciters, and the location information includes the corresponding candidate distances of the candidate exciters. The frame header information, detection frequency information, and location information can be implemented through instruction code fields, which are represented as frame header field, detection frequency field, and location information field, respectively. The number of bytes and the order of arrangement of each field can be set according to actual needs and are not specifically limited here.

[0083] In one example, the frame header field can be set to 1 byte in length. The frame header field serves as an identification tag for a data frame, enabling the optical fiber sensing device 200 to continuously send data frames to the server 100 to transmit information. The detection frequency field and the location information field can each be set to 2 bytes in length. 2 bytes can adequately accommodate the candidate frequency and corresponding candidate distance of the candidate exciter, and each data frame corresponds to the information of one candidate exciter.

[0084] S7: The server 100 obtains the ID information of each candidate exciter based on the candidate frequencies of the multiple candidate exciters, and extracts the coordinate information of each candidate exciter based on the ID information of each candidate exciter; the server obtains the routing information of the optical cable to be located based on the coordinate information of each candidate exciter and the corresponding candidate distance. When setting the exciter 300, the coordinate information corresponding to the exciter 300 has already been uploaded and recorded in the server 100, and the candidate exciter is the exciter 300 set in the optical cable well along the path of the optical cable to be located. In this step, the coordinate information of the candidate exciter can be directly obtained from the database of the server 100 based on the candidate frequencies of the uploaded candidate exciters. Combined with the candidate distance corresponding to the candidate exciter, the obtained coordinate information and candidate distance of the candidate exciter are combined to obtain the routing information of the optical cable 400 to be located, and its route line is drawn.

[0085] Example 2

[0086] like Figure 2 As shown, this embodiment provides a rapid optical cable route positioning system, which includes a server 100, an optical cable sensing device 200, and an exciter 300.

[0087] The server 100 records the ID information, preset frequency, and corresponding coordinate information of the exciter 300. The exciter 300 is installed in a corresponding optical cable well. Each exciter 300 corresponds to a pre-defined ID, which can be used to identify the corresponding exciter 300. After the exciter 300 is installed in the optical cable well, the coordinate information of the optical cable well is used as the coordinate information of the corresponding exciter 300. The ID information and coordinate information of the exciter 300 are uploaded to the server 100 for storage, specifically in the database of the server 100. Each exciter 300 is configured with a preset frequency, and the preset frequencies configured for each exciter 300 are different and not... The preset frequencies are continuously set, meaning there needs to be a certain interval between each preset frequency to reduce the possibility of two preset frequencies being identified as one during frequency restoration due to errors. Furthermore, the preset frequency settings should avoid being the same as normal environmental noise, such as the vibration frequency generated by vehicle operation. Under these conditions, each ID information corresponds to a preset frequency, and the ID information of the exciter 300 can be obtained based on the value of the preset frequency. Since the ID information and corresponding coordinate information of each exciter 300 have been pre-stored in the server 100, the coordinate information set by the exciter 300 can be directly obtained through the preset frequency, enabling rapid positioning of the exciter 300.

[0088] The coordinate information is the GPS (Global Positioning System) information of the optical cable well set by the exciter 300. The exciter 300 can be located on the map using this coordinate information. Furthermore, each preset frequency corresponds to one set of coordinate information. The server 100 can extract the corresponding coordinate information based on the frequency that matches the preset frequency, thereby locating the specific location of the exciter 300.

[0089] The server 100 sends an activation command to the set exciter 300 to activate the exciter 300. Specifically, the server 100 can achieve communication connection with each of the exciters 300 through a 5G (5th Generation Mobile Communication Technology) network, a WiFi (Wireless Network Communication Technology) network, or a wireless Internet of Things (IoT) 500. Preferably, in this embodiment, the server 100 and each of the exciters 300 are connected by a wireless IoT 500. The wireless IoT 500 has the advantages of low setup cost, stable transmission, and multi-point control. Since a large number of exciters 300 need to be set up in this embodiment to achieve positioning, the wireless IoT 500 is very suitable for communication connection between the server 100 and each of the exciters 300 in this embodiment.

[0090] Furthermore, in this embodiment, the activation instruction includes at least activation information and the preset frequency. In a preferred embodiment, it also includes reserved information. The activation information, preset frequency, and reserved information can be implemented through instruction code fields, which are represented as activation field, frequency field, and reserved field, respectively.

[0091] In one example, the activation field can be set to 1 byte in length, including an activation command code. The exciter 300 automatically starts based on the received activation command code in the activation field. The frequency field can be set to 2 bytes in length, including a preset frequency corresponding to the exciter 300. The exciter 300 generates a sound signal with a corresponding vibration frequency based on the preset frequency. The server 100 controls the vibration frequency output by the exciter 300 according to actual needs through the activation command, which allows for flexible adjustment of the vibration frequency, enabling the optical fiber sensing device 200 to better distinguish it from other environmental noises. In the above example, the activation command also includes a 1-byte reserved field, which is a reserved information field that can be used to transmit additional information to the exciter 300 through the server 100, or to supplement the preset frequency into the reserved field when the vibration frequency field is insufficient.

[0092] In some embodiments, the preset frequency can be set in each corresponding exciter 300. In the activation instruction, the frequency field may not be set, or the information content in the frequency field may be set to empty. When the exciter 300 receives the activation instruction, if it does not detect the corresponding frequency field or the content in the frequency field is empty, it will generate vibration according to its own preset frequency.

[0093] Additionally, the server 100 can send a shutdown command to each of the exciters 300; the shutdown command includes at least shutdown information and the preset frequency, and in a preferred embodiment, it also includes reservation information; wherein the shutdown information is recognized by the exciter 300, and the exciter 300 shuts itself down according to the shutdown information. Referring to the activation command described above, the shutdown command can also be implemented through an instruction code field, corresponding to a shutdown field, a frequency field, and a reservation field.

[0094] The shutdown command can be sent by the server 100 to all the exciters 300 after obtaining the route of the optical cable 400 to be located, thereby shutting down the exciters 300 to save energy.

[0095] In this embodiment, the server 100 and each of the actuators 300 are connected via a network. Therefore, the server 100 can activate the actuators 300 as needed, either simultaneously or sequentially. Preferably, to improve positioning efficiency, the server 100 activates all actuators 300 simultaneously via the network, i.e., the server 100 sends activation commands to all actuators 300 simultaneously via the network. All actuators 300 can be all actuators in a candidate area, which may include the optical cable 400 to be located and other optical cable lines; or all actuators recorded in the server 100; or all actuators in a manually preset area, which includes the optical cable 400 to be located and other optical cable lines.

[0096] After receiving the activation command, the exciter 300 automatically starts according to the activation information of the activation command, and extracts the frequency value of the preset frequency from the frequency information. Then, the exciter 300 generates a sound signal with the corresponding vibration frequency according to the frequency value.

[0097] The optical cable sensing device 200 is connected to the optical cable 400 to be positioned, and is used to emit laser pulses to the optical cable 400 to be positioned, receive reflected light signals received on the optical cable 400 to be positioned, and analyze the reflected light signals to obtain candidate frequencies and corresponding candidate distances of multiple candidate exciters 300; the candidate exciters are exciters 300 disposed in the optical cable wells along the path of the optical cable 400 to be positioned; the reflected light signals are formed by the laser pulses in the optical cable 400 to be positioned being acted upon by the sound signals generated by the candidate exciters.

[0098] The sound signal generated by the candidate exciter will act on the optical cable 400 to be located in the optical cable well where it is located, and Rayleigh scattering will occur at the corresponding position of the optical cable 400 to be located. Then, the corresponding reflected light signal will return to the optical cable sensing device 200, such as... Figure 2 As shown, those exciters 300 not on the optical cable 400 to be positioned will not affect the optical cable 400 to be positioned, thereby obtaining the candidate exciters in the optical cable wells along the path of the optical cable 400 to be positioned; the optical cable sensing device 200 collects all the reflected light signals, analyzes these reflected light signals in the optical cable sensing device 200, and extracts the candidate frequencies of the candidate exciters. The specific steps are as follows: first, these reflected light signals are converted into electrical signals through photoelectric conversion, then the converted electrical signals are amplified, and then the amplified electrical signals are converted into digital signals through analog-to-digital conversion. After data acquisition and signal processing, the obtained digital signals are used to obtain the vibration waveform of each point on the optical cable 400 to be positioned, and then the corresponding vibration frequency, i.e., the sound signal, is obtained through Fourier transform. It is worth noting that the frequency spectrum obtained after Fourier transform is the frequency spectrum at that point. In order to make the result more accurate, the largest frequency can be taken as the vibration frequency of that point.

[0099] After obtaining the vibration frequencies of each point on the optical cable 400 to be positioned, preliminary screening is required. Specifically, the vibration frequency of each point is compared with a corresponding preset threshold, which is set according to each preset frequency. When the vibration frequency of a certain point exceeds the preset threshold, the vibration frequency of that point can be determined as the candidate frequency of the candidate exciter, and the position of that point on the optical cable 400 to be positioned is the position of the candidate exciter on the optical cable 400 to be positioned. Then, the candidate distance of each candidate exciter on the optical cable 400 to be positioned can be calculated by the attenuation of the light returned by the reflected light signal or the time difference between the return time and the transmission time.

[0100] The server 100 is also communicatively connected to the optical fiber sensing device 200. The server 100 receives the candidate frequencies and corresponding candidate distances of the multiple candidate exciters parsed by the optical fiber sensing device 200. Specifically, the optical fiber sensing device 200 uploads the candidate frequencies and corresponding candidate distances of each candidate exciter to the server 100 in the form of data frames. In this embodiment, the data frame includes frame header information, detection frequency information, and location information. The frame header information is the tag of the data frame, the detection frequency information includes the detected candidate frequencies of the candidate exciters, and the location information includes the corresponding candidate distances of the candidate exciters. The frame header information, detection frequency information, and location information can be implemented through instruction code fields, which are represented as frame header fields, detection frequency fields, and location information fields, respectively.

[0101] In one example, the frame header field can be set to 1 byte in length. The frame header field serves as an identification tag for the data frame, enabling the optical fiber sensing device 200 to continuously send the data frames to the server 100 to transmit information. The detection frequency field and the location information field can each be set to 2 bytes in length. 2 bytes can adequately accommodate the candidate frequency and corresponding candidate distance of the candidate exciter, and each data frame corresponds to the information of one candidate exciter.

[0102] The server 100 obtains the corresponding coordinate information based on the candidate frequency of the received candidate exciter, and combines it with the corresponding candidate distance of the candidate exciter to obtain the optical cable routing information. Specifically, when setting the exciter 300, the corresponding coordinate information of the exciter 300 has already been uploaded and recorded in the server 100. The candidate exciter is the exciter 300 located in the optical cable well along the path of the optical cable 400 to be located. In this step, the coordinate information of the candidate exciter can be directly obtained from the database of the server 100 based on the uploaded candidate frequency of the candidate exciter. Combined with the corresponding candidate distance of the candidate exciter, the obtained coordinate information and candidate distance of the candidate exciter are combined to obtain the routing information of the optical cable 400 to be located, and its route is drawn.

[0103] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A method for rapid positioning of optical cable routes, characterized in that, The method includes: The server obtains the coordinate and ID information of each exciter; the exciter is used to be installed in the corresponding optical cable well. The coordinate information is the location information of the optical cable well where the exciter is located; The server configures a preset frequency for each exciter, so that each ID information corresponds to a preset frequency; The server sends an activation command with the corresponding preset frequency to all the exciters based on the exciter's ID information, thereby activating all the exciters. The exciter generates a sound signal of a corresponding preset frequency according to the received activation command; The optical cable sensing device receives and demodulates the reflected light signal through the optical cable to be positioned, and obtains the candidate frequencies and corresponding candidate distances of multiple candidate exciters; the reflected light signal is formed by the laser pulse in the optical cable to be positioned being acted upon by the sound signal generated by the candidate exciter; the candidate exciter is an exciter installed in the optical cable well through which the optical cable to be positioned passes. The optical fiber sensing device uploads the candidate frequencies and corresponding candidate distances of the multiple candidate exciters to the server. The server obtains the ID information of each candidate exciter based on the candidate frequency of the plurality of candidate exciters, and extracts the coordinate information of each candidate exciter based on the ID information of each candidate exciter; The server obtains the direction information of the optical cable to be located based on the coordinate information of each candidate exciter and the corresponding candidate distance; The optical cable sensing device receives and demodulates the reflected light signal through the optical cable to be located, obtaining candidate frequencies for multiple candidate exciters, including: The optical cable sensing device emits laser pulses to the optical cable to be located connected to it, collects the reflected light signals in the optical cable to be located, demodulates and restores the vibration frequency of the corresponding reflection point based on the collected reflected light signals, and if the vibration frequency exceeds the corresponding preset threshold, the vibration frequency is determined as the candidate frequency of the candidate exciter.

2. The method for rapid positioning of optical cable routing according to claim 1, characterized in that, The activation instruction includes at least activation information and the preset frequency; The exciter completes self-starting based on the activation information; The exciter generates a sound signal with a corresponding vibration frequency according to the preset frequency.

3. The method for rapid positioning of optical cable routing according to claim 1, characterized in that, The optical fiber sensing device uploads the candidate frequencies and corresponding candidate distances of the multiple candidate exciters to the server, including: The optical fiber sensing device constructs a data frame based on the candidate frequency and corresponding candidate distance of the candidate exciter currently received and parsed, and sends the data frame to the server; The data frame includes frame header information, detection frequency information, and location information; The frame header information is the tag of the data frame; The detection frequency information includes the detected candidate frequencies of the candidate exciters; The location information includes the candidate distance corresponding to the candidate exciter.

4. The method for rapid positioning of optical cable routing according to claim 2, characterized in that, The server sends the activation command to all the exciters via a wireless Internet of Things (IoT) connection. The method further includes the server sending a shutdown command with a corresponding preset frequency to the exciter to shut down the exciter; The shutdown command includes at least shutdown information and the preset frequency; The actuator performs self-stop based on the shutdown information.

5. A rapid positioning system for optical cable routing, characterized in that, The system includes a server, optical fiber sensing devices, and an actuator. The server is used to record the ID information, preset frequency, and corresponding coordinate information of the exciter, and to send an activation command to the exciter to activate it. The actuator is used to be installed in the corresponding optical cable well; The coordinate information is the location information of the optical cable well where the exciter is located; the preset frequency is the frequency set by the server for the exciter, and each ID information corresponds to one preset frequency; the exciter is used to modulate a sound signal with a corresponding vibration frequency according to the activation command sent by the server after receiving the activation command and apply it to the optical cable line in the corresponding optical cable well. The optical cable sensing device is connected to the optical cable to be located and is used to emit laser pulses to the optical cable to be located, receive reflected light signals on the optical cable to be located, and analyze the reflected light signals to obtain candidate frequencies and corresponding candidate distances of multiple candidate exciters; the reflected light signals are formed by the laser signals in the optical cable to be located being acted upon by the sound signals generated by the candidate exciters; the candidate exciters are exciters installed in the optical cable wells along the path of the optical cable to be located. The server is also communicatively connected to the optical cable sensing device. The server is also used to receive the candidate frequencies and corresponding candidate distances of the multiple candidate exciters obtained by the optical cable sensing device, obtain the ID information of each candidate exciter, extract the coordinate information of each candidate exciter based on the ID information of each candidate exciter, and obtain the optical cable routing information by combining the candidate distances corresponding to the candidate exciters. The optical fiber sensing device is used to analyze the reflected light signal to obtain candidate frequencies for multiple candidate exciters, specifically including: The optical fiber sensing device is used to demodulate and restore the vibration frequency of the corresponding reflection point based on the reflected light signal. If the vibration frequency exceeds the corresponding preset threshold, the vibration frequency is determined as the candidate frequency of the candidate exciter.

6. The rapid positioning system for optical cable routing according to claim 5, characterized in that, The activation instruction includes at least activation information and the preset frequency; The exciter performs self-starting based on the activation information; The exciter generates a sound signal with a corresponding vibration frequency according to the preset frequency.

7. The rapid positioning system for optical cable routing according to claim 5, characterized in that, The optical fiber sensing device includes a laser emitting module, a data acquisition module, a signal processing module, and a data transmission module; The laser emitting module is connected to the optical cable to be positioned and is used to emit pulsed laser light to the optical cable to be positioned. The data acquisition module is connected to the optical cable to be located and is used to acquire the reflected light signal in the optical cable to be located. The signal processing module is connected to the data acquisition module and is used to reconstruct the vibration frequency in the sound signal based on the reflected light signal received by the data acquisition module. If the vibration frequency exceeds the corresponding preset threshold, the vibration frequency is determined as the candidate frequency of the candidate exciter, and the candidate distance corresponding to the candidate exciter is calculated. The data transmission module is communicatively connected to the server and is used to upload the candidate frequencies and corresponding candidate distances of the obtained candidate exciters to the server.

8. A rapid positioning system for optical cable routing according to claim 5, characterized in that, The exciter includes a wireless IoT module, a vibration module, and a signal transmission module; The wireless IoT module is communicatively connected to the server and is used to receive activation commands sent by the server. The vibration module is connected to the wireless IoT module and is used to emit vibrations at a corresponding frequency according to the activation command. The signal transmitting module is connected to the vibration module and is used to convert vibrations of the corresponding frequency into sound signals of the corresponding vibration frequency and transmit them.

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