Underground pipeline electronic information identification system and identification method thereof

Abstract

The invention discloses an underground pipeline electronic information identification system and an identification method thereof, and particularly relates to the technical field of information identification, the underground pipeline electronic information identification system comprises an identification ball upper half shell, and an identification ball lower half shell is installed at the bottom of the identification ball upper half shell; the outer side of the bottom of the identification ball upper half shell is fixedly sleeved with a first connecting ring, and the outer side of the top of the identification ball lower half shell is fixedly sleeved with a second connecting ring. Through the gravitational potential energy principle of the liquid filling cavity, the upper and lower half balls of the identification inner ball can be automatically kept horizontal, the signal receiving stability of the electronic identification antenna and the read-write RFID chip is ensured, the high positioning precision is realized in combination with the low-frequency passive RFID technology, the problem that the precision of a traditional detection method of a non-metal pipeline is insufficient is solved, and the detection precision is improved. Full information such as underground facility owners and maintenance records can be stored through the read-write RFID chip, linkage of identification information, an electronic map and a CAD / GIS database is achieved, and the problem of information failure caused by dependence on a ground reference object is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of information identification, more particularly, the present application relates to an underground pipeline electronic information identification system and an identification method thereof. BACKGROUND

[0002] The underground pipeline electronic identification system can identify dense urban underground pipelines and important facilities, thereby accurately, safely and quickly positioning them. In combination with a GPS (global positioning system) and a smart mobile terminal, the system can help engineers find target locations and obtain relevant information of equipment on site. The electronic identification system is used for identifying underground pipeline routes and positioning important underground facilities.

[0003] In the field of underground pipeline management, non-metal pipelines cannot be effectively detected by traditional underground pipeline detectors, and their positioning and management have been a problem in the industry. Although commonly used metal tracer wires can identify metal pipelines to some extent, they are prone to corrosion and have a low service life, which is much lower than the actual service life of underground pipelines. They require high maintenance and have a single identification function, cannot record key information such as pipeline bends, reserved interfaces, tees and wyes, and repair records, and do not have a unique identification function, making it difficult to meet the needs of fine management. In addition, some existing identification systems have poor adaptability in complex underground environments and are difficult to resist the effects of moisture, compression and extreme temperatures, resulting in unstable signals and insufficient positioning accuracy. At the same time, these identification systems lack linkage with electronic maps and databases, cannot realize real-time updating and dynamic management of information, and are prone to failure when the reference objects change or disappear, which brings great inconvenience to the maintenance and repair of underground pipelines and seriously affects the management efficiency and safety of underground assets. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the present application provides an underground pipeline electronic information identification system and an identification method thereof to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: an underground pipeline electronic information identification system, comprising an upper half shell of an identification ball, wherein a lower half shell of the identification ball is installed at the bottom of the upper half shell of the identification ball. The first connecting ring is fixedly connected to the outside of the bottom of the upper half of the shell of the identification ball, the second connecting ring is fixedly connected to the outside of the top of the lower half of the shell of the identification ball, the inside of the upper half of the shell of the identification ball and the inside of the lower half of the shell of the identification ball are provided with an identification inner ball lower hemisphere, the top of the identification inner ball lower hemisphere is provided with an identification inner ball upper hemisphere, the bottom of the inner wall of the identification inner ball lower hemisphere is fixedly connected with a fixed seat, the top of the fixed seat is provided with an electronic identification antenna, the inside of the identification inner ball lower hemisphere is fixedly provided with a read-write RFID chip, the inner walls of the upper half of the shell of the identification ball and the lower half of the shell of the identification ball are fixedly connected with a protective ball sleeve, a liquid filling cavity is formed between the protective ball sleeve and the identification inner ball lower hemisphere and the identification inner ball upper hemisphere, and the protective ball sleeve sequentially comprises a honeycomb layer and an anti-freezing liquid layer from outside to inside.

[0006] Preferably, the top of the second connecting ring is fixedly connected with a connecting ring-shaped plate, the bottom surface of the first connecting ring is provided with a connecting ring-shaped groove, the outside of the connecting ring-shaped plate is provided with threads, the inner side wall of the connecting ring-shaped groove is provided with internal threads matched with the external threads on the outer side wall of the connecting ring-shaped plate, and the connecting ring-shaped plate is screw-connected with the connecting ring-shaped groove through the external threads on the outer side wall thereof and the internal threads on the inner side wall of the connecting ring-shaped groove, so as to realize detachable connection between the second connecting ring and the first connecting ring.

[0007] Preferably, the outside of the second connecting ring is fixedly connected with a mounting plate, the top surface of the mounting plate is provided with a wire bundling hole, and the wire bundling hole is used for passing through a wire bundling belt to fix and mount the upper half of the shell of the identification ball and the lower half of the shell of the identification ball on a pipeline through the wire bundling belt.

[0008] Preferably, the honeycomb layer is a metal honeycomb framework structure for absorbing vertical extrusion stress, and the anti-freezing liquid layer is filled with anti-freezing liquid, so as to be applicable to an extremely cold environment with a temperature as low as-40°C to 55°C.

[0009] Preferably, the upper half of the shell of the identification ball and the lower half of the shell of the identification ball are made of a composite ceramic reinforced polypropylene material, have a protection level of IP68, and have an anti-800N extrusion strength.

[0010] Preferably, the read-write RFID chip adopts a low-frequency passive RFID technology, has a maximum detection depth of 1.5 m, and has an ID reading depth of 1.2-1.3 m.

[0011] Preferably, the liquid filling cavity is filled with a liquid filling material, the identification inner ball lower hemisphere and the identification inner ball upper hemisphere float on the liquid, the identification inner ball lower hemisphere is filled with a solid filling material with a density greater than that of the liquid, the identification inner ball upper hemisphere is a hollow shell, and the identification inner ball lower hemisphere is a solid hemisphere.

[0012] The underground pipeline electronic information identification system also provides an identification method, which specifically comprises the following steps: S1: installation position planning, before underground pipeline construction or maintenance, according to the pipeline design drawings, the installation position of the identification ball is determined, the identification ball is set at the T-shaped branch of the pipeline, the valve position, the intersection with other pipelines, the turning point and the key point of depth change, and the distance between adjacent identification balls is not greater than 50 meters; S2: identification ball pretreatment, before installation, use a special detector matched with the identification ball to detect its overall function, send a specific frequency low frequency signal, detect whether the read-write RFID chip in the identification ball can normally receive the signal and reflect the response signal, and check the signal transmission performance of the electronic identification antenna at the same time, to ensure that the functions of the identification ball are normal; S3: installation operation, before the pipeline backfill operation, place the identification ball at the preset installation position, when the identification ball is close to the metal pipeline, make the whole distance between the upper half shell of the identification ball and the lower half shell of the identification ball and the surface of the metal pipeline not less than 10 cm, to prevent the metal from interfering with the signal of the identification ball; S4: initial information input and upload, use a smart mobile terminal equipped with GPS function to collect the unique ID code of the read-write RFID chip in the identification ball, at the same time, obtain the accurate longitude and latitude coordinates of the installation site, and take multiple angle photos of the site, the photo content should cover the information of the surrounding environment of the identification ball installation position and the relative position relationship with the pipeline, upload the collected ID code, longitude and latitude coordinates and on-site photo data to the data service platform in real time through mobile Internet, and store them in association in the platform, at the same time, generate corresponding identification points and related information records in the electronic map and CAD / GIS database; S5: daily detection and identification, when positioning, information inquiry or maintenance of underground pipeline is needed, the staff carries the detector to the site, the detector sends specific frequency signal matched with the identification ball in an intermittent way, after the electronic identification antenna in the identification ball receives the signal, the read-write RFID chip absorbs and stores the signal energy, after the detector sends the signal for a short time, enters the signal receiving mode, the identification ball releases the stored energy and reflects it back to the detector through the electronic identification antenna, the detector determines the specific position of the identification ball by detecting the strength of the returned signal, when the signal strength received by the detector reaches the peak value, it indicates that the detector is located directly above the identification ball, at this time, the detailed information of the underground facility owner, facility type, installation date, maintenance record and pipeline direction stored in the read-write RFID chip can be accurately read; S6: data update and maintenance, during the daily operation and maintenance of underground pipeline, if the pipeline information changes, such as maintenance, modification, or change of the owner unit of the pipeline, after the maintenance personnel complete the related work, use a special write-in device to update the information of the read-write RFID chip in the identification ball, at the same time, automatically generate detailed time stamp to record the information change time.

[0013] Preferably, in the S, when selecting a specific installation point, if there is a ground marker nearby, the identification ball should be placed close to the marker and marked on the drawing, and in the S, if the installation environment allows, the identification ball can be fixed in the designated position of the pipeline by using a cord through the cord hole opened on the top surface of the installation plate, and if it cannot be fixed, it can be directly buried, but the position of the identification ball should be stable during the filling process and cannot be offset.

[0014] Preferably, in the S5, if information needs to be obtained across regions or remotely during detection, the mobile terminal APP connects the data service platform to download the required identification ball related information from the cloud database, realizing the omnidirectional and remote management of underground pipelines, and in the S6, the updated information is uploaded to the data service platform again through the intelligent mobile terminal, ensuring that the pipeline information in the data service platform is always consistent with the actual situation, and realizing the dynamic and accurate management of underground pipeline information.

[0015] Technical effects and advantages of the application: The identification ball adopts a composite ceramic reinforced polypropylene material, the protection level reaches IP68 and the extrusion strength reaches 800N, the stress absorption effect of the honeycomb layer and the environmental adaptability of the anti-freezing liquid layer from -40 DEG C to 55 DEG C can work stably for a long time under the conditions of underground humidity, corrosion, extrusion and extreme temperature, the upper and lower hemispheres of the identification inner ball can automatically keep horizontal through the principle of gravitational potential energy of the liquid filling cavity, ensuring the signal receiving stability of the electronic identification antenna and the read-write RFID chip, combining with the low-frequency passive RFID technology to realize high positioning accuracy, solving the problem of insufficient accuracy of traditional detection methods of non-metal pipelines; The read-write RFID chip can store full information such as the owner of underground facilities and maintenance records, and cooperate with the GPS positioning, photo collection and cloud data service platform of the intelligent terminal to realize the linkage of identification information and electronic map and CAD / GIS database, meet the dynamic management demand of the whole life cycle of the pipeline, and avoid the information invalidation problem caused by relying on ground reference objects; The screw connection structure connecting the ring-shaped plate and the ring-shaped groove realizes the detachability of the shell, facilitates the later maintenance, the cord hole design supports quick fixing and installation, the laying interval of 50 meters and the key node identification principle ensure the complete coverage of the pipeline route, effectively reduce the risk of misexcavation and improve the repair efficiency, the industry-specific frequency characteristics of the read-write RFID chip support the frequency adaptation of multiple industries such as communication, power and gas, and are suitable for scenes such as urban high-density pipelines and rural areas without reference objects, and can meet the identification needs of metal and non-metal pipelines, and expand the application range of traditional identification technology. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the present application.

[0017] Figure 2 It is the side sectional structure schematic diagram of the present application.

[0018] Figure 3 It is the rear view structure schematic diagram of the present application.

[0019] Figure 4 It is the partial internal structure schematic diagram of the present application.

[0020] Figure 5 It is the structure schematic diagram of the lower half shell of the identification ball of the present application.

[0021] Figure 6 It is the bottom view structure schematic diagram of the upper half shell of the identification ball of the present application.

[0022] Figure 7 It is the Figure 2 Enlarged structure schematic diagram at A of the present application.

[0023] Figure 8 It is the method flow structure schematic diagram of the present application.

[0024] The figure mark is: 1, the upper half shell of the identification ball; 2, the lower half shell of the identification ball; 3, the first connecting ring; 4, the second connecting ring; 5, the lower half ball of the identification inner ball; 6, the upper half ball of the identification inner ball; 7, the fixed seat; 8, the electronic identification antenna; 9, the read-write RFID chip; 10, the protective ball cover; 11, the liquid filling cavity; 12, the honeycomb layer; 13, the anti-freezing fluid layer; 14, the connecting ring-shaped plate; 15, the connecting ring-shaped groove; 16, the mounting plate; 17, the binding hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0026] As shown in the accompanying drawings Figures 1-7 The underground pipeline electronic information identification system, including the upper half shell of the identification ball 1, the lower half shell of the identification ball 2 is installed at the bottom of the upper half shell of the identification ball 1; The outer fixing sleeve at the bottom of the upper half shell 1 of the marking ball is provided with a first connecting ring 3, and the outer fixing sleeve at the top of the lower half shell 2 of the marking ball is provided with a second connecting ring 4. The lower hemisphere 5 of the marking inner ball is arranged inside the upper half shell 1 and the lower half shell 2 of the marking ball, and the upper hemisphere 6 of the marking inner ball is installed on the top of the lower hemisphere 5 of the marking inner ball. The bottom of the inner wall of the lower hemisphere 5 of the marking inner ball is fixedly connected with a fixing seat 7, and an electronic identification antenna 8 is installed on the top of the fixing seat 7. A readable and writable RFID chip 9 is fixedly installed inside the lower hemisphere 5 of the marking inner ball. The inner walls of the upper half shell 1 and the lower half shell 2 of the marking ball are both fixedly connected with a protective ball sleeve 10. A liquid-filled cavity 11 is formed between the protective ball sleeve 10 and the lower hemisphere 5 and the upper hemisphere 6 of the marking inner ball. The protective ball sleeve 10 includes a honeycomb layer 12 and an antifreeze layer 13 from the outside to the inside.

[0027] As attached Figure 2 、 4 As shown in Figures 5, 6 and 7, a connecting annular plate 14 is fixedly connected to the top of the second connecting ring 4, a connecting annular groove 15 is provided on the bottom surface of the first connecting ring 3, a thread is provided on the outer side of the connecting annular plate 14, and an internal thread which is compatible with the external thread on the outer side wall of the connecting annular plate 14 is provided on the inner side wall of the connecting annular groove 15. The connecting annular plate 14 is screwed together with the internal thread on the inner side wall of the connecting annular groove 15 through the external thread on its outer side wall to realize a detachable connection between the second connecting ring 4 and the first connecting ring 3.

[0028] As attached Figure 1 、 3 As shown in Figure 5, a mounting plate 16 is fixedly connected to the outer side of the second connecting ring 4. A wire hole 17 is provided on the top surface of the mounting plate 16. The wire hole 17 is used for a wire tie to pass through so that the upper half shell 1 and the lower half shell 2 of the marking ball can be fixedly installed on the pipeline through the wire tie.

[0029] As attached Figure 4 As shown, the honeycomb layer 12 is a metal honeycomb skeleton structure used to absorb vertical extrusion stress, and the antifreeze layer 13 is filled with antifreeze so that it can be used in extremely cold environments as low as -40°C to 55°C.

[0030] As attached Figures 1-6 As shown, the upper shell 1 and the lower shell 2 of the marker ball are both made of composite ceramic reinforced polypropylene material, with a protection level of IP68 and an anti-extrusion strength of 800N.

[0031] As attached Figure 2 As shown, the readable and writable RFID chip 9 adopts low-frequency passive RFID technology, with a maximum detection depth of 1.5m and an ID reading depth of 1.2-1.3m, which is convenient for storing information such as underground facility owner, facility category, installation date, maintenance record and pipeline direction.

[0032] As attachedFigure 2 As shown, the liquid filling cavity 11 is filled with liquid filling, the lower half of the inner sphere 5 and the upper half of the inner sphere 6 float on the liquid, and the lower half of the inner sphere 5 is filled with a solid filling with a density greater than that of the liquid, the upper half of the inner sphere 6 is a hollow shell, and the lower half of the inner sphere 5 is a solid hemisphere. According to the principle of gravitational potential energy, the lower half of the inner sphere 5 and the upper half of the inner sphere 6 can automatically maintain a horizontal position regardless of the angle of the sphere.

[0033] The identification method of the underground pipeline electronic information identification system is also provided, which specifically includes the following steps: S1: Installation position planning. Before the construction or maintenance of the underground pipeline, the installation position of the identification sphere is determined according to the pipeline design drawings. The identification sphere is set at the T-shaped branch, valve position, intersection with other pipelines, turning point, and depth change point of the pipeline. The distance between adjacent identification spheres should not be greater than 50 meters. S2: Identification sphere pretreatment. Before installation, use a special detector matched with the identification sphere to comprehensively detect its functions. Send a low-frequency signal of a specific frequency to detect whether the read-write RFID chip in the identification sphere can normally receive the signal and reflect the response signal. At the same time, check the signal transmission performance of the electronic identification antenna to ensure that all functions of the identification sphere are normal. When selecting a specific installation point, if there is a clear ground marker nearby, the identification sphere should be placed close to the marker and marked on the drawing. S3: Installation operation. Before the pipeline backfilling operation, place the identification sphere at the preset installation position. When the identification sphere is close to the metal pipeline, the upper half of the identification sphere 1 and the lower half of the identification sphere 2 should have a distance of not less than 10 cm from the surface of the metal pipeline to prevent the metal from interfering with the signal of the identification sphere. If the installation environment allows, use a cord to pass through the cord hole 17 opened on the top surface of the installation plate 16 to firmly fix the identification sphere at the designated position of the pipeline. If it is not possible to perform the fixing operation, the direct burying method can be used, but it is necessary to ensure that the position of the identification sphere is stable during the burying process and does not deviate. S4: Initial information input and upload. Use a smart mobile terminal equipped with GPS function to collect the unique ID code of the read-write RFID chip 9 in the identification sphere, obtain the accurate longitude and latitude coordinates of the installation site, and take multiple angle photos of the site. The photo content should cover the information of the surrounding environment of the installation position of the identification sphere and the relative position relationship with the pipeline. The collected ID code, longitude and latitude coordinates, and on-site photo data are uploaded to the data service platform in real time through mobile Internet, and are stored in association in the platform. At the same time, the corresponding identification point and related information record are generated in the electronic map and CAD / GIS database. S5: Daily detection and identification, when positioning, information inquiry or maintenance of underground pipelines is needed, the staff carries the detector to the scene, the detector sends the specific frequency signal matched with the identification ball in an intermittent manner, the electronic identification antenna 8 in the identification ball receives the signal, and the read-write RFID chip 9 absorbs and stores the signal energy, after the detector sends the signal for a short time, enters the signal receiving mode, the identification ball releases the stored energy and reflects it back to the detector through the electronic identification antenna 8, the detector determines the specific position of the identification ball by detecting the strength of the returned signal, when the signal strength received by the detector reaches the peak value, it indicates that the detector is located directly above the identification ball, at this time, the detailed information of the underground facility owner, facility type, installation date, maintenance record and pipeline direction stored in the read-write RFID chip 9 can be accurately read; If the information needs to be obtained across regions or remotely during the detection process, the mobile terminal APP is connected to the data service platform to download the required identification ball related information from the cloud database, and the underground pipeline is managed in all directions and remotely; S6: Data update and maintenance, during the daily operation and maintenance of underground pipelines, if the pipeline information changes, such as repair, reconstruction, or the owner unit of the pipeline changes, the maintenance personnel uses a special writing device to update the information of the read-write RFID chip 9 in the identification ball after completing the related work, and simultaneously generates a detailed timestamp to record the information change time; The updated information is uploaded to the data service platform again through the intelligent mobile terminal, so that the pipeline information in the data service platform is always consistent with the actual situation, and dynamic and accurate management of the underground pipeline information is realized.

[0034] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change; Secondly: the drawings of the disclosed embodiments of the present application only involve the structures involved in the disclosed embodiments, other structures can refer to the usual design, and under the condition of no conflict, the same embodiments and different embodiments of the present application can be combined with each other; Finally: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An underground pipeline electronic information identification system, comprising an upper half shell (1) of an identification ball, characterized in that: The bottom of the marking ball upper half shell (1) is mounted with a marking ball lower half shell (2); The outer fixing sleeve at the bottom of the upper half shell (1) of the marking ball is provided with a first connecting ring (3), the outer fixing sleeve at the top of the lower half shell (2) of the marking ball is provided with a second connecting ring (4), the lower hemisphere (5) of the marking inner ball is provided inside the upper half shell (1) and the lower half shell (2), the upper hemisphere (6) of the marking inner ball is installed on the top of the lower hemisphere (5), the bottom of the inner wall of the lower hemisphere (5) of the marking inner ball is fixedly connected with a fixing seat (7), and the top of the fixing seat (7) is installed with a fixing seat (7). An electronic identification antenna (8) is installed, a readable and writable RFID chip (9) is fixedly installed inside the lower hemisphere (5) of the identification inner ball, and the inner walls of the upper half shell (1) and the lower half shell (2) of the identification ball are fixedly connected with a protective ball sleeve (10), a liquid-filled cavity (11) is formed between the protective ball sleeve (10), the lower hemisphere (5) and the upper hemisphere (6) of the identification inner ball, and the protective ball sleeve (10) includes a honeycomb layer (12) and an antifreeze layer (13) in sequence from the outside to the inside.

2. The underground pipeline electronic information identification system according to claim 1, characterized in that: The top of the second connecting ring (4) is fixedly connected to a connecting annular plate (14), the bottom surface of the first connecting ring (3) is provided with a connecting annular groove (15), the outer side of the connecting annular plate (14) is provided with a thread, the inner side wall of the connecting annular groove (15) is provided with an internal thread that matches the external thread on the outer side wall of the connecting annular plate (14), and the connecting annular plate (14) is screwed together with the internal thread on the inner side wall of the connecting annular groove (15) through the external thread on its outer side wall to achieve a detachable connection between the second connecting ring (4) and the first connecting ring (3).

3. The underground pipeline electronic information identification system according to claim 1, characterized in that: The outer side of the second connecting ring (4) is fixedly connected to a mounting plate (16), and a wire hole (17) is provided on the top surface of the mounting plate (16). The wire hole (17) is used for allowing a wire tie to pass through, so that the upper half shell (1) of the marking ball and the lower half shell (2) of the marking ball can be fixedly mounted on the pipeline through the wire tie.

4. The underground pipeline electronic information identification system according to claim 1, characterized in that: The honeycomb layer (12) is a metal honeycomb skeleton structure used to absorb vertical extrusion stress, and the antifreeze layer (13) is filled with antifreeze so that it can be used in extremely cold environments as low as -40°C to 55°C.

5. The underground pipeline electronic information identification system according to claim 1, characterized in that: The upper shell (1) and the lower shell (2) of the marking ball are both made of composite ceramic reinforced polypropylene material, with a protection level of IP68 and an anti-extrusion strength of 800N.

6. The underground pipeline electronic information identification system according to claim 1, characterized in that: The readable and writable RFID chip (9) adopts low-frequency passive RFID technology, with a maximum detection depth of 1.5m and an ID reading depth of 1.2-1.3m.

7. The underground pipeline electronic information identification system according to claim 1, characterized in that: The liquid filling cavity (11) is filled with a liquid filler, the lower hemisphere (5) of the marking inner sphere and the upper hemisphere (6) of the marking inner sphere float on the liquid, and the lower hemisphere (5) of the marking inner sphere is filled with a solid filler having a density greater than that of the liquid, the upper hemisphere (6) of the marking inner sphere is a hollow shell, and the lower hemisphere (5) of the marking inner sphere is a solid hemisphere.

8. The marking method of the underground pipeline electronic information marking system according to any one of claims 1 to 7, characterized in that: The specific steps include: S1: Installation location planning: Before underground pipeline construction or maintenance, determine the installation location of marker balls according to the pipeline design drawings. Marker balls should be installed at key locations such as T-shaped branches, valve locations, intersections with other pipelines, turning points, and depth change points of the pipeline. The spacing between adjacent marker balls should not exceed 50 meters. S2: Pre-processing of the marker ball. Before installation, use a dedicated detector that matches the marker ball to perform a comprehensive functional test on it. Send a low-frequency signal of a specific frequency to test whether the readable and writable RFID chip in the marker ball can normally receive the signal and reflect the response signal. At the same time, check the signal transmission performance of the electronic marking antenna to ensure that all functions of the marker ball are normal. S3: Installation operation: before the pipeline backfill operation, place the marker ball at the preset installation position. When the marker ball is close to the metal pipe, the distance between the upper half shell (1) of the marker ball and the lower half shell (2) of the marker ball and the surface of the metal pipe is not less than 10 cm to prevent the metal from interfering with the marker ball signal. S4: Initial information entry and upload: using a smart mobile terminal equipped with GPS function, collect the unique ID code of the readable and writable RFID chip (9) in the marker ball, obtain the precise latitude and longitude coordinates of the installation site, and take multi-angle photos of the site. The photo content should include information about the surrounding environment of the marker ball installation location and its relative position relationship with the pipeline. The collected ID code, longitude and latitude coordinates and on-site photo data are uploaded to the data service platform in real time via the mobile Internet, and are stored in association in the platform. At the same time, corresponding marker points and related information records are generated in the electronic map and CAD / GIS database; S5: Daily detection and identification. When it is necessary to locate, query information or maintain underground pipelines, the staff will arrive at the site with a detector. The detector will intermittently send a specific frequency signal that matches the identification ball. After the electronic identification antenna (8) inside the identification ball receives the signal, the readable and writable RFID chip (9) absorbs and stores the signal energy. After the detector finishes sending the signal for a short time and enters the signal receiving mode, the identification ball releases the stored energy and reflects it back to the detector through the electronic identification antenna (8). The detector determines the specific location of the identification ball by detecting the strength of the returned signal. When the signal strength received by the detector reaches a peak, it indicates that the detector is directly above the identification ball. At this time, the detailed information on the underground facility owner, facility category, installation date, maintenance record and pipeline direction stored in the readable and writable RFID chip (9) can be accurately read; S6: Data update and maintenance. During the daily operation and maintenance of underground pipelines, if the pipeline information changes, such as repairs, renovations, or changes in the owner of the pipeline, the maintenance personnel will use a dedicated writing device to update the information on the readable and writable RFID chip (9) in the identification ball after completing the relevant work, and automatically generate a detailed timestamp to record the time of information change.

9. The underground pipeline electronic information marking method according to claim 8, characterized in that: When selecting a specific installation point in S1, if there is an obvious ground marker nearby, the marker ball should be placed close to the marker and marked on the drawing. In S3, if the installation environment permits, a cable tie can be used to pass through the cable hole (17) opened on the top surface of the installation plate (16) to firmly fix the marker ball to the designated position of the pipeline. If the fixing operation cannot be performed, direct burial can be adopted, but it is necessary to ensure that the marker ball is stable in position during the burial process and does not shift.

10. The underground pipeline electronic information marking method according to claim 8, characterized in that: If, during the detection process in S5, it is necessary to obtain information across regions or remotely, the data service platform is connected through the mobile terminal APP to download the required identification ball related information from the cloud database to achieve all-round and remote management of underground pipelines. The updated information in S6 is uploaded to the data service platform again through the smart mobile terminal to ensure that the pipeline information in the data service platform is always consistent with the actual situation, thereby achieving dynamic and accurate management of underground pipeline information.

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