Portable optical waveguide fault point geospatial position high-precision intelligent tracking method

Abstract

The application provides a portable optical guide line fault point geospatial position high-precision intelligent tracking method, which comprises the following steps: a distributed vibration sensing system determines the position of a fault point on an optical guide line according to a light signal transmitted back by the optical guide line; after a maintenance personnel arrives at the vicinity of a theoretical geospatial position of the fault point, any position is selected as a starting hammering point, and the maintenance personnel reaches a plurality of hammering points along a set route from the starting hammering point; the maintenance personnel hammers the laying ground of the optical guide line by using a vibrator every time the maintenance personnel reaches a hammering point; the distributed vibration sensing system determines the distance between the fault point and each hammering point according to the vibration size of the fault point under each hammering of the vibrator; and a detection auxiliary terminal determines the direction of the fault point relative to the last hammering point according to the distance between the fault point and each hammering point, so as to indicate the maintenance personnel to move forward according to the determined direction and accurately find the fault point.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of optical guide line troubleshooting, and particularly relates to a portable optical guide line fault point geospatial position high-precision intelligent tracking method. BACKGROUND

[0002] At present, optical guide lines such as optical fibers and optical cables are widely used in many fields, mainly for communication or sensing, and can be accompanied by pipeline laying of oil, natural gas and the like. During the laying of the optical guide line, due to the limitation of the laying environment, the length and geospatial position of the optical guide line can not be one-to-one corresponding, that is, the optical guide line can not be laid in a straight line, and the geospatial position of each point on the optical guide line cannot be determined according to the length of the optical guide line. However, when the optical guide line breaks or has a great loss, etc., it is necessary to accurately and quickly find out the fault point and timely complete troubleshooting. However, at present, if each position on the optical fiber is associated with the corresponding geospatial position, after the fault point on the optical fiber is determined, the maintenance personnel are guided to the fault point for troubleshooting by relying on satellite positioning (such as GPS, Beidou positioning, etc.), which is limited by the accuracy of satellite positioning, and the accuracy of finding the fault point is low. SUMMARY

[0003] The present application provides a portable optical guide line fault point geospatial position high-precision intelligent tracking method to solve the problem of low accuracy in finding the fault point on the optical guide line by relying on satellite positioning.

[0004] According to a first aspect of an embodiment of the present application, a portable optical guide line fault point geospatial position high-precision intelligent tracking method is provided, which is applied to a tracking system, the tracking system comprising a distributed vibration sensing system, a detection auxiliary terminal and a vibrator, the distributed vibration sensing system being connected with an optical guide line and the detection auxiliary terminal respectively; the method comprising the following steps:

[0005] Step S110, the distributed vibration sensing system determines the position of the fault point on the optical guide line according to the optical signal transmitted back by the optical guide line in reverse;

[0006] Step S120, the theoretical geospatial position of the fault point is determined according to the position of the fault point on the optical guide line, and the maintenance personnel go to the theoretical geospatial position of the fault point;

[0007] Step S130, after the maintenance personnel arrive near the theoretical geospatial position of the fault point, any position is selected as a starting hammering point, the maintenance personnel start from the starting hammering point and reach a plurality of hammering points along a set route, and the maintenance personnel hammer the laying ground of the optical guide line by using the vibrator every time they reach a hammering point;

[0008] Step S140, for each hammering of the vibrator, the distributed vibration sensing system detects the vibration magnitude at the fault point on the optical guide line under the hammering, and determines the distance between the fault point and the hammering point according to the detected vibration magnitude and sends it to the detection assistance terminal;

[0009] Step S150, the detection assistance terminal determines the orientation of the fault point relative to the last hammering point according to the distance between the fault point and each hammering point, so as to instruct the maintenance personnel to walk according to the determined orientation to find the fault point.

[0010] In an optional implementation, after the step S150, the method further comprises:

[0011] Step S160, when walking according to the determined orientation, the maintenance personnel hammers the optical guide line laying ground with the vibrator at each position walked to;

[0012] Step S170, for each hammering of the vibrator, the distributed vibration sensing system detects the vibration magnitude at the fault point on the optical guide line under the hammering, and determines the distance between the fault point and the hammering point according to the detected vibration magnitude;

[0013] Step S180, the detection assistance terminal determines whether the hammering point is the geographical position of the fault point according to the distance between the fault point and the hammering point.

[0014] In another optional implementation, the detection assistance terminal locally stores an optical guide line laying path map; and the step S120 specifically comprises:

[0015] Step S121, after receiving the position of the fault point on the optical guide line provided by the distributed vibration sensing system, the detection assistance terminal finds the theoretical geographical position of the fault point from the optical guide line laying path map;

[0016] Step S122, the detection assistance terminal obtains the current position of the maintenance personnel holding the detection assistance terminal through its positioning module;

[0017] Step S123, the detection assistance terminal plans a walking route between the theoretical geographical position of the fault point and the current position of the maintenance personnel on the optical guide line laying path map according to the two positions, displays the walking route on its display module, and controls its pointing needle to indicate the walking direction, so as to guide the maintenance personnel to go to the theoretical geographical position of the fault point according to the walking route and the walking direction on the display module.

[0018] In another alternative implementation, the step S130, the set route is:

[0019] The maintenance personnel walks a first distance in a first direction from the starting hammering point to a first hammering point, or the maintenance personnel walks a first distance in a first direction from the starting hammering point to a first hammering point and then walks a second distance in a second direction perpendicular to the first direction to a second hammering point.

[0020] In another alternative implementation, the optical line is buried under the ground surface, and the vibrator hammers the ground surface; the detection auxiliary terminal locally stores the burying depth of each position on the optical line, and before the step S150, the detection auxiliary terminal further comprises: for the distance between the fault point and each hammering point provided by the distributed vibration sensing system, after receiving the distance, the detection auxiliary terminal first determines the burying depth of the fault point according to the position of the fault point on the optical line, and then corrects the distance according to the burying depth of the fault point, and takes the corrected distance as the distance between the fault point and the hammering point.

[0021] In another alternative implementation, the step S150 specifically comprises:

[0022] Step S151, when the maintenance personnel reaches the starting hammering point, the detection auxiliary terminal obtains a first distance between the fault point and the hammering point by hammering the laying ground of the optical line with the vibrator, and draws a first circle with the hammering point as the center and the first distance as the radius;

[0023] Step S152, when the maintenance personnel walks a first distance in a first direction from the starting hammering point to a first hammering point along the set route, the detection auxiliary terminal obtains a second distance between the fault point and the hammering point by hammering the laying ground of the optical line with the vibrator, and draws a second circle with the hammering point as the center and the second distance as the radius;

[0024] Step S153, the detection auxiliary terminal determines whether there is only one intersection point between the first circle and the second circle, if yes, step S154 is executed, otherwise, step S156 is executed;

[0025] Step S154, the detection auxiliary terminal determines whether the radius of the first circle is greater than the radius of the second circle, if yes, it is determined that the fault point is in the first direction and located in front of the first hammering point, and step S155 is executed, otherwise, it is determined that the fault point is in the opposite direction of the first direction and located behind the first hammering point, and step S155 is executed;

[0026] Step S155, the detection auxiliary terminal controls a display module to display a pointing needle, and makes the pointing needle point to the direction of the fault point relative to the last hammering point, so as to indicate the maintenance personnel to walk in the determined direction to find the fault point;

[0027] Step S156, if the maintenance personnel do not observe the pointing needle displayed on the detection auxiliary terminal within a certain time, it is determined that there are two intersection points between the first circle and the second circle, at this time, the maintenance personnel walks in a second direction opposite to the first direction by a second distance to reach a second hammering point, and hammers the laying ground of the optical guide line by using the vibrator, and the detection auxiliary terminal obtains a third distance between the fault point and the hammering point;

[0028] Step S157, the detection auxiliary terminal judges whether the third distance is greater than the second distance, if yes, it is determined that the intersection point on the side opposite to the second direction is the geographical spatial position of the fault point, and step S158 is executed; otherwise, it is determined that the intersection point on the side of the second direction is the geographical spatial position of the fault point, and step S158 is executed.

[0029] Step S158, the detection auxiliary terminal determines the position of the last hammering point according to the starting hammering point, the first distance and the second distance, and determines the direction of the fault point relative to the last hammering point according to the geographical spatial position of the fault point and the position of the last hammering point, and returns to step S155.

[0030] In another optional implementation, in the step S151, after the detection auxiliary terminal obtains the distance between the fault point and the hammering point, the detection auxiliary terminal further controls the pointing needle to disappear.

[0031] In another optional implementation, in the step S158, the first distance and the second distance are any distances input by the maintenance personnel to the detection auxiliary terminal.

[0032] In another optional implementation, the step S180 specifically includes: for the distance between the fault point and the hammering point obtained by the detection auxiliary terminal based on each hammering of the vibrator, the detection auxiliary terminal judges whether the distance between the fault point and the hammering point is less than a preset distance, if yes, it indicates that the hammering point is the geographical spatial position of the fault point, otherwise, the maintenance personnel is reminded to continue to walk in the determined direction, and step S160 is executed.

[0033] In another optional implementation, the optical guide line is an optical fiber or an optical cable.

[0034] The present application has the following beneficial effects:

[0035] 1、The application is in the geographical space position of the fault point on the optical fiber, is in the vicinity of the theoretical space geographical position of the fault point, first, the laying ground of the light guide line is hammered several times, according to the vibration size of the fault point detected at each hammering, the distance between the fault point and the hammering point at each hammering is determined, then according to the distance change between the fault point and the hammering point at each hammering, the direction of the fault point relative to the last hammering point is determined, according to the determined direction, the fault point can be accurately found, the whole direction determination process does not need to rely on satellite signal, that is, even in the area without satellite signal coverage, the accurate positioning of the geographical space position of the fault point can be realized, it can be seen that the application expands the application scene of accurately finding the geographical space position of the fault point on the optical fiber;

[0036] 2、After the direction of the fault point relative to the last hammering point is determined, for the light guide line buried under the ground surface, the maintenance personnel walk along the direction, and hammer the laying ground of the light guide line several times in the walking process, thus according to the vibration size of the fault point detected at each hammering, the distance between the fault point and the hammering point can be determined, according to the distance, it can be judged whether the hammering point is the geographical space position of the fault point, it can be seen that the application can also accurately find the fault point on the light guide line buried under the ground surface;

[0037] 3、When the light guide line is buried under the ground surface, according to the buried depth of each position on the light guide line, the distance between the fault point and each hammering point is corrected, which can improve the determination accuracy of the distance between the fault point and each hammering point;

[0038] 4、The application designs the determination process of the direction of the fault point relative to the last hammering point, the total number of hammering of the maintenance personnel in the whole process is small, so the direction of the fault point relative to the last hammering point can be quickly determined;

[0039] 5、When the direction of the fault point relative to the last hammering point is determined, the detection auxiliary terminal obtains the distance between the fault point and the starting hammering point, and then controls the disappearance of the pointing needle thereon, thus the maintenance personnel can judge whether to continue walking to the second hammering point according to the appearance and disappearance of the pointing needle, it can be seen that the application provides good human-computer interaction;

[0040] 6、When the direction of the fault point relative to the last hammering point is determined, the first distance and the second distance can be any distance input by the maintenance personnel to the detection auxiliary terminal, the first distance and the second distance are not fixed values, thus the maintenance personnel can successfully realize the accurate positioning of the fault point even in the face of very complex line entanglement, it can be seen that the application can be suitable for accurate positioning of the fault point in various laying complex environments. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of an embodiment of the portable optical fiber circuit fault point geospatial location high-precision intelligent tracing system of the present invention;

[0042] Figure 2 This is a flowchart of the portable optical fiber circuit fault point high-precision intelligent tracing method of the present invention;

[0043] Figure 3 (a) to (c) are schematic diagrams of one step in determining the location of the fault point relative to the last hammer blow point;

[0044] Figure 4 (a) to (d) are schematic diagrams of another step in determining the location of the fault point relative to the last hammer blow. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned objectives, features and advantages of the embodiments of the present invention more apparent and understandable, the technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] In the description of this invention, unless otherwise specified and limited, it should be noted that the term "connection" should be interpreted broadly. For example, it can be a mechanical connection or an electrical connection, or it can be a connection between two internal components. It can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above term according to the specific circumstances.

[0047] See Figure 1 This is a schematic diagram of an embodiment of the portable optical fiber transmission line fault point geospatial high-precision intelligent tracing system of the present invention. The system may include a distributed vibration sensing system, a detection auxiliary terminal, and a vibrator. The distributed vibration sensing system is connected to the optical fiber transmission line and the detection auxiliary terminal. The detection auxiliary terminal may include a control module and a positioning module, a pointer, and a display module connected to the control module. The control module locally stores a map of the optical fiber transmission line laying path. The distributed vibration sensing system can be wirelessly or wiredly connected to the control module. The detection auxiliary terminal can be a mobile terminal such as a mobile phone, iPad, or laptop with a corresponding APP installed.

[0048] See Figure 2 This is a flowchart of the portable optical fiber transmission line fault point high-precision intelligent geospatial location tracing method of the present invention. The method may include the following steps:

[0049] Step S110, the distributed vibration sensing system determines the fault point on the optical guide line and the location of the fault point on the optical guide line according to the optical signal transmitted back by the optical guide line in reverse.

[0050] In this step, when the optical guide line breaks or has other faults such as great loss, the optical signal (such as Rayleigh scattering signal) transmitted back by the optical guide line in reverse will be abnormal. After receiving the optical signal transmitted back by the optical guide line in reverse, the distributed vibration sensing system determines the fault point on the optical guide line and the location of the fault point on the optical guide line according to the time when the optical signal is abnormal. The process of the distributed vibration sensing system determining the fault point and the location of the fault point on the optical guide line is prior art, which will not be described here.

[0051] Step S120, according to the location of the fault point on the optical guide line, the theoretical geographic position of the fault point is determined, and the maintenance personnel go to the theoretical geographic position of the fault point.

[0052] In this step, the correspondence between each position on the optical guide line and the theoretical geographic position can be pre-built, and a mark symbol is provided on each segment of the optical guide line. When the area where the fault point is located has no satellite signal coverage, the maintenance personnel can first determine the theoretical geographic position of the fault point according to the location of the fault point on the optical guide line, and then find out the mark symbol of the optical guide line segment where the fault point is located. After the maintenance personnel go to the approximate position, the fault point can be found according to the mark symbol. At this time, the maintenance personnel can choose any position in the optical guide line segment as the actual geographic position reached, and the selected position is used as the starting hammering point.

[0053] In addition, the detection auxiliary terminal can store an optical guide line laying path map locally; when the area where the fault point is located has satellite signal coverage, the step S120 can specifically include:

[0054] Step S121, after receiving the location of the fault point on the optical guide line provided by the distributed vibration sensing system, the detection auxiliary terminal finds the theoretical geographic position of the fault point from the optical guide line laying path map;

[0055] Step S122, the detection auxiliary terminal obtains the current position of the maintenance personnel holding the detection auxiliary terminal through the positioning module thereof;

[0056] Step S123, the detection auxiliary terminal plans a travel route between the theoretical geographic location of the fault point and the current location of the maintenance personnel on the optical fiber laying path map according to the theoretical geographic location of the fault point and the current location of the maintenance personnel, displays the travel route on the display module, and controls the pointing needle to indicate the travel direction to guide the maintenance personnel to go to the theoretical geographic location of the fault point according to the travel route and the travel direction on the display module. It can be seen that, in the present application, whether the area where the fault point on the optical fiber line is covered with satellite signals or not covered with satellite signals, the maintenance personnel can go to the corresponding theoretical geographic location of the fault point.

[0057] Step S130, after the maintenance personnel arrive at the vicinity of the theoretical geographic location of the fault point, any position is selected as a starting hammering point, and the maintenance personnel starts from the starting hammering point and reaches the multiple hammering points along the set route. The maintenance personnel hammers the laying ground of the optical fiber line by using the vibrator every time a hammering point is reached. In this step, the set route can be that the maintenance personnel starts from the starting hammering point, walks in a first direction for a first distance to reach a first hammering point, or the maintenance personnel starts from the starting hammering point, first walks in a first direction for a first distance to reach a first hammering point, and then walks in a second direction perpendicular to the first direction for a second distance to reach a second hammering point.

[0058] Step S140, for each hammering of the vibrator, the distributed vibration sensing system detects the vibration size of the fault point on the optical fiber line under this hammering, determines the distance between the fault point and the hammering point according to the detected vibration size, and sends the distance to the detection auxiliary terminal.

[0059] Step S150, the detection auxiliary terminal determines the direction of the fault point relative to the last hammering point according to the distance between the fault point and each hammering point, so as to indicate the maintenance personnel to walk in the determined direction to find the fault point.

[0060] In this step, the laying position of the optical guide line can be above the ground surface or buried under the ground surface, wherein the vibrator hammers the ground surface regardless of whether the optical guide line is laid above the ground surface or buried under the ground surface. However, when the corresponding position of the fault point on the optical guide line on the ground surface is fixed, the vibration size detected by the corresponding distributed vibration sensor will be different with the change of the burying depth of the optical guide line, and thus the distance between the fault point and each hammering point needs to be corrected based on the burying depth of the fault point. Therefore, when the optical guide line is buried under the ground surface, the detection auxiliary terminal can locally store the burying depth of each position on the optical guide line. Before the step S150, the method can further include: for the distance between the fault point and each hammering point provided by the distributed vibration sensing system, after the detection auxiliary terminal receives the distance, the detection auxiliary terminal first determines the burying depth of the fault point according to the position of the fault point on the optical guide line, and then corrects the distance according to the burying depth of the fault point, and takes the corrected distance as the distance between the fault point and the hammering point. The distance between the fault point and the hammering point is the distance between the position of the vertical projection of the fault point on the ground surface and the hammering point. According to the burying depth of each position on the optical guide line, the present application corrects the distance between the fault point and each hammering point when the optical guide line is buried under the ground surface, and can improve the determination accuracy of the distance between the fault point and each hammering point.

[0061] Specifically, the step S150 can include:

[0062] Step S151, when the maintenance personnel arrive at the starting hammering point, the detection auxiliary terminal obtains a first distance between the fault point and the hammering point by hammering the laying ground of the optical guide line with the vibrator, and draws a first circle with the hammering point as the center and the first distance as the radius, as shown in Figure 3 (a) and Figure 4 (a);

[0063] Step S152, when the maintenance personnel arrive at the first hammering point by walking a first distance in a first direction along the set route, the detection auxiliary terminal obtains a second distance between the fault point and the hammering point by hammering the laying ground of the optical guide line with the vibrator, and draws a second circle with the hammering point as the center and the second distance as the radius; wherein the first direction is the direction in which the optical guide line can be laid.

[0064] Step S153, the detection auxiliary terminal determines whether there is only one intersection point between the first circle and the second circle, if yes, executes step S154, as shown in Figure 3 (b) and (c), otherwise, executes step S156;

[0065] Step S154, the probe auxiliary terminal judges whether the radius of the first circle is greater than the radius of the second circle (i.e. whether the first distance is greater than the second distance), if yes, it is determined that the fault point is in the first direction and in front of the first hammering point, as shown in Figure 3 (c), step S155 is executed; otherwise, it is determined that the fault point is in the opposite direction of the first direction and behind the first hammering point, as shown in Figure 3 (b), step S155 is executed;

[0066] Step S155, the probe auxiliary terminal controls its display module to display a pointing needle and makes the pointing needle point to the position of the fault point relative to the last hammering point (i.e. the position of the fault point relative to the first hammering point or the second hammering point), so as to instruct the maintenance personnel to move forward according to the determined position to find the fault point;

[0067] Step S156, if the maintenance personnel do not observe the pointing needle displayed on the probe auxiliary terminal within a certain time, it is determined that there are two intersection points between the first circle and the second circle, as shown in Figure 4 (b), at this time, the maintenance personnel move forward by a second distance in a second direction perpendicular to the first direction to reach the second hammering point, as shown in Figure 4 (c) and (d), the vibrator is used to hammer the laying ground of the optical wire, and the probe auxiliary terminal obtains a third distance between the fault point and the hammering point;

[0068] Step S157, the probe auxiliary terminal judges whether the third distance is greater than the second distance, if yes, it is determined that the intersection point on the side opposite to the second direction among the two intersection points is the geographical spatial position of the fault point, as shown in Figure 4 (c), step S158 is executed; otherwise, it is determined that the intersection point on the side of the second direction among the two intersection points is the geographical spatial position of the fault point, as shown in Figure 4 (d), step S158 is executed;

[0069] Step S158, the probe auxiliary terminal determines the position of the last hammering point (i.e. the second hammering point) according to the starting hammering point, the first distance and the second distance, and determines the position of the fault point relative to the last hammering point according to the geographical spatial position of the fault point and the position of the last hammering point, and returns to execute step S155.

[0070] In the step S151, the probe auxiliary terminal obtains the distance between the fault point and the hammering point, and controls the disappearance of the pointing needle, so that the maintenance personnel can determine whether to continue to move to the second hammering point in the second direction perpendicular to the first direction according to the appearance and disappearance of the pointing needle. It can be seen that the present application provides good human-computer interaction. In addition, in the step S158, the first distance and the second distance can be any distance input by the maintenance personnel to the probe auxiliary terminal. The first distance and the second distance are not fixed values, so that the maintenance personnel can successfully realize the accurate positioning of the fault point even if facing very complex line entanglement. It can be seen that the present application can be applied to the accurate positioning of the fault point in various complex laying environments. The present application designs the determination process of the position of the fault point relative to the last hammering point. The total number of hammering of the maintenance personnel in the whole process is small, so the position of the fault point relative to the last hammering point can be quickly determined.

[0071] As can be seen from the above embodiment, in order to solve the problem of low positioning accuracy in the prior art that depends on satellite positioning to find the geographic spatial position of the fault point on the optical fiber, when finding the geographic spatial position of the fault point on the optical fiber, the present application first hammers the laying ground of the optical guide line multiple times after reaching the vicinity of the theoretical spatial geographic position of the fault point, determines the distance between the fault point and the hammering point at each time of hammering according to the vibration size of the fault point detected at each time of hammering, then determines the position of the fault point relative to the last hammering point according to the distance change between the fault point and the hammering point at each time of hammering, and accurately finds the fault point according to the determined position. The whole position determination process does not need to rely on satellite signals, that is, even in the area without satellite signal coverage, the accurate positioning of the geographic spatial position of the fault point can be realized. It can be seen that the present application expands the application scenario of accurately finding the geographic spatial position of the fault point on the optical fiber.

[0072] In addition, in the above embodiment, for the optical guide line laid on the ground surface, the maintenance personnel can find the corresponding fault point according to the determined position of the fault point relative to the last hammering point; but for the optical guide line buried under the ground surface, it is difficult to determine which position of the fault point is in the direction. Therefore, after the step S150, the method can further include:

[0073] Step S160, the maintenance personnel hammers the laying ground of the optical guide line with the vibrator when moving to each position according to the determined position;

[0074] In step S170, the distributed vibration sensing system detects the vibration size of the fault point on the optical guide line under each hammering of the vibrator, and determines the distance between the fault point and the hammering point according to the detected vibration size.

[0075] In step S180, the detection auxiliary terminal determines whether the hammering point is the geographical spatial position of the fault point according to the distance between the fault point and the hammering point.

[0076] The step S180 specifically includes: for the distance between the fault point and the hammering point obtained by the detection auxiliary terminal based on each hammering of the vibrator, the detection auxiliary terminal judges whether the distance between the fault point and the hammering point is less than a preset distance, if yes, it means that the hammering point is the geographical spatial position of the fault point, otherwise, the maintenance personnel are reminded to continue to move forward along the determined direction, and the step S160 is executed. After the direction of the fault point relative to the last hammering point is determined, for the optical guide line buried under the ground surface, the maintenance personnel move forward along the direction, and hammer the laying ground of the optical guide line during the moving process, so that the distance between the fault point and the hammering point can be determined according to the vibration size of the fault point detected during each hammering, and the hammering point can be judged as the geographical spatial position of the fault point according to the distance. It can be seen that the fault point of the optical guide line buried under the ground surface can also be accurately found.

[0077] It should be noted that in the above embodiment, the optical guide line can be an optical fiber or an optical cable, the distributed vibration sensing system can be a phase OTDR (optical time-domain reflectometer) tester, and the vibrator can be a single-frequency manual or electric vibrator with a frequency of 500Hz or less.

[0078] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0079] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.

Claims

1. A portable high-precision intelligent tracking method for the geographic spatial position of a fault point of an optical waveguide, applied to a tracking system, characterized in that, The tracking system comprises a distributed vibration sensing system, a detection auxiliary terminal and a vibrator, the distributed vibration sensing system is connected with an optical fiber line and the detection auxiliary terminal respectively; the method comprises the following steps: In step S110, the distributed vibration sensing system determines the position of the fault point on the optical fiber line according to the optical signal transmitted back by the optical fiber line; In step S120, the theoretical geographical position of the fault point is determined according to the position of the fault point on the optical fiber line, and the maintenance personnel go to the theoretical geographical position of the fault point; In step S130, after the maintenance personnel arrive near the theoretical geographical position of the fault point, any position is selected as a starting hammering point, the maintenance personnel start from the starting hammering point and reach a plurality of hammering points along a set route, and the maintenance personnel hammer the laying ground of the optical fiber line at each hammering point; In step S140, the distributed vibration sensing system detects the vibration size of the fault point on the optical fiber line under each hammering of the vibrator, determines the distance between the fault point and the hammering point according to the detected vibration size, and sends the distance to the detection auxiliary terminal; In step S150, the detection auxiliary terminal determines the direction of the fault point relative to the last hammering point according to the distance between the fault point and each hammering point, and indicates the maintenance personnel to go forward according to the determined direction to find the fault point.

2. The portable optical guide line fault point geospatial position high-precision intelligent tracking method according to claim 1, characterized in that, After step S150, the method further comprises: In step S160, the maintenance personnel hammer the laying ground of the optical fiber line at each position when going forward according to the determined direction; In step S170, the distributed vibration sensing system detects the vibration size of the fault point on the optical fiber line under each hammering of the vibrator, and determines the distance between the fault point and the hammering point according to the detected vibration size; In step S180, the detection auxiliary terminal determines whether the hammering point is the geographical position of the fault point according to the distance between the fault point and the hammering point.

3. The portable optical guide line fault point geospatial location high-precision intelligent tracking method according to claim 1, characterized in that, The detection auxiliary terminal locally stores an optical fiber line laying path map; Step S120 specifically comprises: In step S121, after receiving the position of the fault point on the optical fiber line provided by the distributed vibration sensing system, the detection auxiliary terminal finds the theoretical geographical position of the fault point from the optical fiber line laying path map; In step S122, the detection auxiliary terminal obtains the current position of the maintenance personnel holding the detection auxiliary terminal through the positioning module thereof; In step S123, the detection auxiliary terminal plans a travel route between the theoretical geographical position of the fault point and the current position of the maintenance personnel on the optical fiber line laying path map according to the theoretical geographical position of the fault point and the current position of the maintenance personnel, displays the travel route on the display module thereof, and controls the pointing needle to indicate the travel direction to guide the maintenance personnel to go to the theoretical geographical position of the fault point according to the travel route and the travel direction on the display module.

4. The portable optical guide line fault point geospatial location high-precision intelligent tracking method according to claim 1, characterized in that, The step S130 includes: The maintenance personnel walks a first distance in a first direction from the starting hammering point to the first hammering point, or first walks a first distance in a first direction from the starting hammering point to the first hammering point, and then walks a second distance in a second direction perpendicular to the first direction to the second hammering point.

5. The portable optical guide line fault point geospatial location high-precision intelligent tracking method according to claim 1, characterized in that, The optical line is buried under the ground surface, and the vibrator hammers the ground surface; the detection auxiliary terminal locally stores the burying depth of each position on the optical line, and before the step S150, further includes: for the distance between the fault point and each hammering point provided by the distributed vibration sensing system, after receiving the distance, the detection auxiliary terminal first determines the burying depth of the fault point according to the position of the fault point on the optical line, and then corrects the distance according to the burying depth of the fault point, and takes the corrected distance as the distance between the fault point and the hammering point.

6. The portable optical guide line fault point geospatial location high-precision intelligent tracking method according to any one of claims 1 to 5, characterized in that, The step S150 specifically includes: Step S151, when the maintenance personnel reaches the starting hammering point, the detection auxiliary terminal obtains a first distance between the fault point and the hammering point by hammering the laying ground of the optical line with the vibrator, and draws a first circle with the hammering point as the center and the first distance as the radius; Step S152, when the maintenance personnel walks a first distance in a first direction from the starting hammering point to the first hammering point along the set route, the detection auxiliary terminal obtains a second distance between the fault point and the hammering point by hammering the laying ground of the optical line with the vibrator, and draws a second circle with the hammering point as the center and the second distance as the radius; Step S153, the detection auxiliary terminal determines whether there is only one intersection point between the first circle and the second circle, if yes, step S154 is executed, otherwise, step S156 is executed; Step S154, the detection auxiliary terminal determines whether the radius of the first circle is greater than the radius of the second circle, if yes, it is determined that the fault point is in the first direction and located in front of the first hammering point, and step S155 is executed, otherwise, it is determined that the fault point is in the opposite direction of the first direction and located behind the first hammering point, and step S155 is executed; Step S155, the detection auxiliary terminal controls the display module to display a pointing needle, and makes the pointing needle point to the position of the fault point relative to the last hammering point, so as to instruct the maintenance personnel to walk in the determined direction to find the fault point; Step S156, if the maintenance personnel does not observe the pointing needle displayed on the detection auxiliary terminal within a certain time, it is determined that there are two intersection points between the first circle and the second circle, at this time, the maintenance personnel walks a second distance in a second direction perpendicular to the first direction to the second hammering point, and hammers the laying ground of the optical line with the vibrator, and the detection auxiliary terminal obtains a third distance between the fault point and the hammering point. Step S157, the detection auxiliary terminal judges whether the third distance is greater than the second distance, if yes, determines the intersection point located on the side opposite to the second direction as the geographic spatial position of the fault point, and executes step S158; otherwise, determines the intersection point located on the side of the second direction as the geographic spatial position of the fault point, and executes step S158. Step S158, the detection auxiliary terminal determines the position of the last hammering point according to the starting hammering point, the first distance and the second distance, and determines the orientation of the fault point relative to the last hammering point according to the geographic spatial position of the fault point and the position of the last hammering point, and returns to execute step S155.

7. The portable optical guide line fault point geospatial location high-precision intelligent tracking method according to claim 6, characterized in that, In step S151, the detection auxiliary terminal further controls the disappearance of the pointing needle after obtaining the distance between the fault point and the hammering point.

8. The portable optical guide line fault point geospatial location high-precision intelligent tracking method according to claim 6, characterized in that, In step S158, the first distance and the second distance are any distances input by the maintenance personnel to the detection auxiliary terminal.

9. The portable optical guide line fault point geospatial location high-precision intelligent tracking method according to claim 2, characterized in that, Step S180 specifically includes: for the distance between the fault point and the hammering point obtained by the detection auxiliary terminal based on each hammering of the vibrator, the detection auxiliary terminal judges whether the distance between the fault point and the hammering point is less than a preset distance, if yes, the hammering point is the geographic spatial position of the fault point, otherwise, the maintenance personnel is reminded to continue to move forward according to the determined orientation, and returns to execute step S160.

10. The portable optical guide line fault point geospatial location high-precision intelligent tracking method according to claim 1, characterized in that, The optical guide line is an optical fiber or an optical cable.

Images