CN115061211A - Urban network buried cable path diagram correction method and system - Google Patents
Urban network buried cable path diagram correction method and system Download PDFInfo
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Abstract
The invention relates to the technical field of power and electricity, and provides a method and a system for correcting a path diagram of an urban network buried cable, which are used for improving the detection efficiency of the buried cable and reducing the construction difficulty. The method comprises the following steps: the automatic detection trolley is used for positioning through a GPS (global positioning system), acquiring a satellite map of a positioning point, controlling the traveling direction according to the intensity and the position of an electric signal, calculating the depth and the trend of the buried cable by analyzing the intensity and the position of the electric signal, generating a buried cable path map according to the depth and the trend of the buried cable, correcting the buried cable path map through the satellite map, updating relevant data information in time when the data of the cable position changes, and rapidly acquiring the position of the buried cable through the corrected buried cable path map during each construction so as to reduce the construction difficulty.
Description
Technical Field
The invention relates to the technical field of power and electricity, in particular to a method and a system for correcting a path diagram of an urban network buried cable.
Background
With the rapid development of urban construction, urban underground power grids are increasingly complex, and the number of corresponding cables is also increasing. The cable is typically laid beneath the surface, and in order to locate the cable underground, a cable identification plate is typically provided on the surface.
However, due to urban and rural reconstruction and residential area renovation, the cable signboard arranged on the ground is inevitably damaged and buried, so that the position of some underground cables cannot be determined. When the excavation construction operation is carried out on the area where the cable is laid, because the information such as the position of the underground cable cannot be accurately determined, the construction process can be influenced, the cable can be damaged even in the construction process, and the accidental power failure or other dangerous conditions can be caused.
Chinese patent CN201320110499.2 discloses a high-precision underground cable detector for detecting the position of an underground cable, but every time of construction, the detection is performed by the underground cable detector in advance, which increases the workload and difficulty of construction.
Disclosure of Invention
The invention provides a method for correcting a path diagram of an urban network buried cable, which is used for improving the detection efficiency of the buried cable and reducing the construction difficulty. The method comprises the following steps: s1, positioning the automatic detection trolley through a GPS, and acquiring a satellite map of a positioning point; s2, setting a starting point of the buried cable by the automatic detection trolley, detecting the buried cable by using the electromagnetic induction device, and acquiring an electric signal in the detection process; s3, controlling the advancing direction of the automatic detection trolley according to the strength and the position of the electric signal; s4, analyzing the intensity and the position of the electric signal by the automatic detection trolley, calculating the depth and the trend of the buried cable, and generating a buried cable path diagram according to the depth and the trend of the buried cable; s5, the automatic detection trolley transmits the satellite map and the buried cable path map to a remote monitoring center; and S6, the remote monitoring center combines the underground cable path diagram with the satellite map.
Preferably, the step S2 of acquiring the electrical signal of the detection process includes:
B=μI/4πL *(cosθ1-cosθ2)；
b is magnetic induction intensity;
mu is magnetic conductivity;
i is a current value;
l is the vertical distance from the field point to the current-carrying straight wire;
theta 1 is an included angle between a current element at the current inflow end of the lead and the vector;
Preferably, the step S4 calculates the depth formula of the buried cable, including:
D=hE1/(E2-E1)；
E1=I/(D+h)；
E2=I/D；
d is the depth of the buried cable;
h is the distance between the electromagnetic induction device and the ground;
i is a current value.
Preferably, the detecting of the buried cable by the electromagnetic induction device comprises:
receiving electromagnetic waves radiated to the ground by the buried cable, tuning, amplifying, frequency selecting and filtering the received electromagnetic waves, and generating electric signals;
the buried cable routing diagram includes: starting point number, end point number, starting point burial depth, end point burial depth, starting point pipeline elevation, end point pipeline elevation, pipeline type, burying mode and the like.
Preferably, step S6 further includes: and acquiring the landform data through the satellite map, and marking the landform data to the buried cable path diagram.
Preferably, step S4 further includes:
calibrating the underground cable path diagram according to the satellite map;
determining coordinates according to the geographic marks as a reference, and measuring and calculating according to the geographic horizontal elevation;
the geographic markers include architectural markers and immobilization markers;
setting a drawing proportion, and marking the positions of a cable terminal, a cable branch box, a cable trench, a cable pipe arrangement working well, a cable tunnel and a bridge box beam.
Preferably, step S3 further includes:
when the automatic detection trolley detects the cable branch box, a marking point is arranged on the satellite map;
the electromagnetic induction device sets a plurality of strength levels for the cable according to the strength of the electric signal;
the automatic detection trolley sequentially detects according to the intensity grade of the electric signal.
Preferably, when the automatic detection trolley detects the cable terminal, the automatic detection trolley returns to the marking point, and the cable of the next level of strength grade is detected according to the plurality of set strength grades.
The invention also provides a system for correcting the urban network buried cable path diagram, which comprises: the system comprises an automatic detection trolley and a remote monitoring center;
the automatic detection trolley comprises a traveling module, a traveling control module, a signal receiving module and a power supply device;
the power supply device is used for supplying power to the automatic detection trolley;
the signal receiving module comprises a positioning device and a communication device;
the positioning device is used for positioning the automatic detection trolley and acquiring a satellite map of the location of the automatic detection trolley;
the traveling module is used for supporting and carrying the traveling control module and the signal receiving module to travel;
the walking control module comprises an electromagnetic induction device, a data processing device and a control device;
the electromagnetic induction device is used for detecting the buried cable and acquiring an electric signal in the detection process;
the control device is used for controlling the advancing direction of the advancing module according to the strength and the position of the electric signal;
and the data processing device is used for analyzing the intensity and the position of the electric signal, calculating the depth and the trend of the buried cable, and generating a buried cable path diagram according to the depth and the trend of the buried cable.
The automatic detection trolley transmits the underground cable path diagram and the satellite map to a remote monitoring center through a communication device;
and the remote monitoring center is used for merging the underground cable path diagram with the satellite map.
Preferably, the power supply device comprises a photovoltaic power generation panel and a lithium battery;
the positioning device adopts ATK1218-BD positioning;
the electromagnetic induction device adopts an underground cable detector;
the data processing device adopts a 16-bit embedded computer;
the communication device adopts a 4G network module.
According to the technical scheme, the invention has the following advantages:
according to the invention, the cable detection and the positioning are combined, the depth and the trend of the buried cable are detected through the cable detection device, the geographic position and the landform data of the detection point are obtained through the positioning device, and meanwhile, the power cable path diagram of the area is drawn through the detection of the buried cable by the automatic detection trolley, so that the buried cable detection efficiency is improved. And the remote monitoring center calibrates the buried cable path diagram through the satellite map, and supplements the landform data into the power cable path diagram to generate a buried cable image. When the residential quarter is transformed, constructors acquire the position, the trend and the depth of the buried cable according to the image of the buried cable, do not need to excavate construction operation at every time, and detect the buried cable, so that the construction difficulty is reduced. The invention also provides a communication device, the image of the buried cable is sent to the remote monitoring center through the communication device, the large data visualization data summarization of the buried cable in the urban network is realized, when the position data of the cable changes, the system can be automatically uploaded, the related data information can be updated in time, a visual drawing is generated according to the image of the buried cable, the position condition of the buried cable can be monitored in real time, and when the position of the cable changes or is dug and broken, the visual drawing can be marked and an alarm prompt can be sent to a construction team in time.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a flow chart of a method for correcting a route map of an urban network buried cable.
Fig. 2 is a schematic diagram of a system for correcting a path diagram of an urban network buried cable.
Fig. 3 is a schematic view of sensing urban network buried cables.
In the figure: 1. the system comprises a signal receiving module, a walking control module, a traveling module, a power supply device, a remote monitoring center, a positioning device, a communication device, an electromagnetic induction device, a data processing device, a control device, a photovoltaic power generation board, a lithium battery and a buried cable, wherein the traveling module is 3, the power supply device is 4, the remote monitoring center is 5, the positioning device is 10, the communication device is 11, the electromagnetic induction device is 20, the data processing device is 21, the control device is 22, the photovoltaic power generation board is 23, the lithium battery is 24, and the buried cable is 40.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The device provided by the embodiment of the application can be implemented as various types of user terminals such as a notebook computer, a tablet computer, a desktop computer, a set-top box, a mobile device (such as a mobile phone, a portable music player, a personal digital assistant, a special message device and a portable game device) and can also be implemented as a server.
In some embodiments, the remote monitoring center may be an independent physical server, may also be a server cluster or a distributed system formed by a plurality of physical servers, and may also be a cloud server providing basic cloud computing services such as a cloud service, a cloud database, cloud computing, a cloud function, cloud storage, a network service, cloud communication, a middleware service, a domain name service, a security service, a CDN, and a big data and artificial intelligence platform. The control device may be a smart phone, a tablet computer, a notebook computer, a desktop computer, a smart speaker, a smart watch, a smart voice interaction device, a smart home appliance, a vehicle-mounted terminal, etc., but is not limited thereto. The control device and the remote monitoring center may be directly or indirectly connected through wired or wireless communication, and the embodiment of the present application is not limited.
Before describing the method for correcting the urban network buried cable path diagram provided by the embodiment of the application in detail, the electromagnetic induction and the cable branch box related in the embodiment of the application are briefly introduced.
The basic working principle of electromagnetic induction is that a pipeline detector transmitter generates electromagnetic waves and transmits a transmitting signal to an underground detected metal pipeline through different transmitting connection modes, after the underground metal pipeline senses the electromagnetic waves, induced current is generated on the surface of the underground metal pipeline and can be transmitted to a remote place along the metal pipeline, and in the current transmission process, the electromagnetic waves are radiated to the ground through the underground metal pipeline, so that when an underground pipeline detector receiver detects the ground, electromagnetic wave signals can be received on the ground right above the underground metal pipeline, and the position and the trend of the underground metal pipeline can be judged through the strength change of the received signals.
The cable branch box is used as a cable branch, and the cable branch box mainly plays a role in cable tapping or cable switching. When a distribution line is long in distance, if a plurality of cables with small cross-sectional areas are selected for power transmission, a lot of cables are wasted, therefore, in the process that outgoing cables go out to an electric load, generally, when the outgoing cables go out, cables with large cross-sectional areas are selected for main cables, then when the load is close to, a cable branch box is used for branching the main cables, the main cables are divided into a plurality of cables with small cross-sectional areas, and the cables with small cross-sectional areas are connected to the load.
The urban network buried cable path diagram correction system provided by the application is explained in detail below with reference to specific embodiments. The urban network buried cable path diagram correction system provided by the application is shown in fig. 2 and comprises: the automatic detection trolley comprises an advancing module 3, a walking control module 2, a signal receiving module 1 and a power supply device 4.
The power supply device 4 includes a photovoltaic power generation panel 23 and a lithium battery 24, and the photovoltaic power generation panel 23 converts the acquired light energy into electric energy to charge the lithium battery 24. The lithium battery 24 is used for supplying power to the automatic detection trolley. The signal receiving module 1 comprises a positioning device 10 and a communication device 11, wherein the positioning device 10 adopts ATK1218-BD positioning for positioning the position of the automatic detection trolley and acquiring a satellite map of the location of the automatic detection trolley according to the position of the automatic detection trolley. The advancing module 3 adopts universal wheels and correspondingly provided obstacle crossing wheels for supporting and carrying the walking control module 2 and the signal receiving module 1 to advance.
The walking control module 2 includes an electromagnetic induction device 20, a data processing device 21 and a control device 22. The electromagnetic induction device 20 is an underground cable detector, and is configured to detect the underground cable 40 and obtain an electrical signal in a detection process. The control device 22 adopts a PIC single chip microcomputer and an STM32 series single chip microcomputer, and the control device 22 is used for controlling the advancing direction of the advancing module 3 according to the intensity and the position of the electric signal. The data processing device 21 adopts a 16-bit embedded computer and is used for analyzing the strength and the position of the electric signal, calculating the depth and the trend of the buried cable 40 and generating a buried cable path map according to the depth and the trend of the buried cable 40. The automatic detection trolley transmits an underground cable path diagram and a satellite map to the remote monitoring center 5 through the communication device 11 which adopts a 4G network module.
The remote monitoring center 5 is used for merging the underground cable path diagram with the satellite map, the merged underground cable diagram can be sent to a distribution board matched with a community, and when the community property management department or the electric power department is in construction, workers can know the position, the depth and the trend of the underground cable through the underground cable diagram, so that the underground cable 40 is effectively prevented from being broken and the artificial distribution network fault is caused. When the cable position data changes, the distribution board automatic uploading system matched with the community updates related data information in time, generates a visual drawing, and displays cable depth, trend parameters and landform information on the visual drawing, thereby realizing the large data visualization data summarization of the urban network buried cable. According to the invention, the operation condition of the buried cable 40 is monitored in real time through visualization of the buried cable big data, and an alarm can be given in time when a dangerous point occurs.
The invention provides a specific embodiment for explaining a system for correcting a path diagram of an urban network buried cable, and as shown in fig. 3, the specific embodiment is that a cable starting point and a cable terminal are set, an automatic detection trolley is placed at the cable starting point, the automatic detection trolley obtains an electric signal through an electromagnetic induction device 20, the depth and the trend of the buried cable are calculated according to the electric signal, the running direction of the automatic detection trolley is determined according to the trend of the buried cable, the automatic detection trolley is controlled to run along the buried cable by driving a running module 3, and the depth of the buried cable is recorded during the process of detecting the buried cable by the automatic detection trolley, so that the path diagram of the buried cable is generated. The automatic detection trolley acquires the landform information of the automatic detection trolley, which is ten kilometers in square and round, through the positioning device 10, acquires the geographic sign from the landform information, and marks the geographic sign on the buried cable path diagram. When the cable branch box is encountered, the major diameter cable is preferentially detected, and after the automatic detection trolley reaches the major diameter cable terminal, no magnetic induction within 500 meters around is detected, the automatic detection trolley automatically returns to the cable branch box, and the minor diameter cable is detected again until all the cable branches are detected. And after the automatic detection trolley finishes the cable detection, uploading the drawn underground cable path diagram and the geographic information of the detection path to a remote monitoring center 5. The remote monitoring center 5 corrects the underground cable path map according to the satellite map and supplements the surrounding topographic information data on the underground cable path map.
Based on the system, the invention correspondingly provides a method for correcting the urban network buried cable path diagram, which comprises the following steps of: and S1, positioning the automatic detection trolley through the GPS, and acquiring a satellite map of the positioning point.
And S2, setting the starting point of the buried cable 40 by the automatic detection trolley, detecting the buried cable 40 by using the electromagnetic induction device 20, and acquiring an electric signal in the detection process. The detection of the buried cable 40 by the electromagnetic induction device 20 includes: receives electromagnetic waves radiated to the ground by the buried cable 40, tunes, amplifies, frequency selects, and filters the received electromagnetic waves, and generates electrical signals. The electrical signals include magnetic induction, magnetic field strength, and current value.
The step S2 of obtaining the electrical signal in the probing process includes detecting magnetic induction, where the magnetic induction detection formula is B = μ I/4 π L (cos θ 1-cos θ 2). Wherein, B is magnetic induction intensity; mu is magnetic conductivity; i is a current value; l is the vertical distance from the field point to the current-carrying straight wire; theta 1 is an included angle between a current element at the current inflow end of the lead and the vector; theta 2 is the included angle between the current element at the current outflow end of the wire and the vector.
And S3, controlling the traveling direction of the automatic detection trolley according to the strength and the position of the electric signal. When the automatic detection trolley detects the cable branch box, a marking point is set on the satellite map. The electric signals generated by the cables with different cross sections have different intensities, and the size of the cross section of each cable is positively correlated with the diameter of each cable.
The electromagnetic induction device 20 sets a plurality of strength levels for the cable according to the strength of the electric signal, wherein the strength level is positively correlated with the sectional area of the cable, that is, the larger the sectional area of the cable is, the higher the strength level of the electric signal of the cable is. This application distinguishes the cable of major diameter and the cable of minor diameter through the intensity level, and the automatic detection dolly is surveyed major diameter cable according to the intensity level priority of the signal of telecommunication, when the automatic detection dolly detects cable termination, gets back to the mark point, surveys the cable of next level intensity level. The invention can meet the integrity of main cable detection by sequencing the strength grades and sequentially detecting the cables with different diameters.
And S4, analyzing the intensity and the position of the electric signal by the automatic detection trolley, calculating the depth and the trend of the buried cable 40, and generating a buried cable path diagram according to the depth and the trend of the buried cable 40. The buried cable routing diagram includes: starting point number, end point number, starting point burial depth, end point burial depth, starting point pipeline elevation, end point pipeline elevation, pipeline type, burying mode and the like. Step S4 further includes: calibrating the buried cable path diagram according to the satellite map, determining coordinates according to the geographic signs serving as the reference, and measuring and calculating according to the geographic level elevation, wherein the geographic signs comprise building signs and fixed signs, and the fixed signs comprise mountain and river geographic signs. Setting a drawing proportion, and marking the positions of a cable terminal, a cable branch box, a cable trench, a cable pipe arrangement working well, a cable tunnel and a bridge box beam. The step S4 calculates the depth formula of the buried cable 40, which includes: d = hE1/(E2-E1), where E1= I/(D + h), E2= I/D, D is the depth of the buried cable 40, h is the distance between the electromagnetic induction device 20 and the ground, and I is the current value.
And S5, the automatic detection trolley transmits the satellite map and the underground cable path map to the remote monitoring center 5.
S6, the remote monitoring center 5 merges the underground cable path map and the satellite map. Step S6 further includes: and acquiring the landform data through the satellite map, and marking the landform data to the buried cable path diagram.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for correcting a path diagram of an urban network buried cable is characterized by comprising the following steps:
s1, positioning the automatic detection trolley through a GPS, and acquiring a satellite map of a positioning point;
s2, setting a starting point of the buried cable by the automatic detection trolley, detecting the buried cable by using an electromagnetic induction device, and acquiring an electric signal in the detection process;
s3, controlling the advancing direction of the automatic detection trolley according to the strength and the position of the electric signal;
s4, analyzing the intensity and the position of the electric signal by the automatic detection trolley, calculating the depth and the trend of the buried cable, and generating a buried cable path diagram according to the depth and the trend of the buried cable;
s5, the automatic detection trolley transmits the satellite map and the buried cable path map to a remote monitoring center;
and S6, the remote monitoring center combines the underground cable path diagram with the satellite map.
2. The method of claim 1, wherein the urban network buried cable routing graph is corrected,
the step S2 of acquiring the electrical signal of the detection process includes: b = μ I/4 π L (cos θ 1-cos θ 2);
b is magnetic induction intensity;
mu is magnetic conductivity;
i is a current value;
l is the vertical distance from the field point to the current-carrying straight wire;
3. The method for correcting the urban network buried cable path diagram according to claim 1, wherein the step S4 is to calculate a buried cable depth formula including:
D=hE1/(E2-E1)；
E1=I/(D+h)；
E2=I/D；
d is the depth of the buried cable;
h is the distance between the electromagnetic induction device and the ground;
i is a current value.
4. The method of claim 1, wherein the urban network buried cable routing graph is corrected,
the electromagnetic induction device for detecting the buried cable comprises:
receiving electromagnetic waves radiated to the ground by the buried cable, tuning, amplifying, frequency selecting and filtering the received electromagnetic waves, and generating electric signals;
the buried cable routing diagram includes: starting point number, end point number, starting point burial depth, end point burial depth, starting point pipeline elevation, end point pipeline elevation, pipeline type and burying mode.
5. The urban network buried cable routing map correcting method according to claim 1, wherein step S6 further includes: and acquiring the landform data through the satellite map, and marking the landform data to the buried cable path diagram.
6. The urban network buried cable routing map correcting method according to claim 1, wherein step S4 further includes:
calibrating the underground cable path diagram according to the satellite map;
determining coordinates according to the geographic marks as a reference, and measuring and calculating according to the geographic horizontal elevation;
the geographic markers include architectural markers and immobilization markers;
setting a drawing proportion, and marking the positions of a cable terminal, a cable branch box, a cable trench, a cable pipe arrangement working well, a cable tunnel and a bridge box beam.
7. The urban network buried cable routing map correcting method according to claim 6, wherein step S3 further comprises:
when the automatic detection trolley detects the cable branch box, a marking point is arranged on the satellite map;
the electromagnetic induction device sets a plurality of strength levels for the cable according to the strength of the electric signal;
the automatic detection trolley sequentially detects according to the intensity grade of the electric signal.
8. The urban network buried cable routing map correcting method according to claim 7,
and when the automatic detection trolley detects the cable terminal, returning to the marking point and detecting the cable with the next level of strength grade.
9. A system for correcting a path diagram of an urban network buried cable is characterized by comprising: the system comprises an automatic detection trolley and a remote monitoring center;
the automatic detection trolley comprises a traveling module, a traveling control module, a signal receiving module and a power supply device;
the power supply device is used for supplying power to the automatic detection trolley;
the signal receiving module comprises a positioning device and a communication device;
the positioning device is used for positioning the automatic detection trolley and acquiring a satellite map of the location of the automatic detection trolley;
the traveling module is used for supporting and carrying the traveling control module and the signal receiving module to travel;
the walking control module comprises an electromagnetic induction device, a data processing device and a control device;
the electromagnetic induction device is used for detecting the buried cable and acquiring an electric signal in the detection process;
the control device is used for controlling the advancing direction of the advancing module according to the strength and the position of the electric signal;
the data processing device is used for analyzing the intensity and the position of the electric signal, calculating the depth and the trend of the buried cable, and generating a buried cable path diagram according to the depth and the trend of the buried cable;
the automatic detection trolley transmits the underground cable path diagram and the satellite map to a remote monitoring center through a communication device;
and the remote monitoring center is used for merging the underground cable path diagram with the satellite map.
10. The urban network buried cable routing correction system of claim 9,
the power supply device comprises a photovoltaic power generation panel and a lithium battery;
the positioning device adopts ATK1218-BD positioning;
the electromagnetic induction device adopts an underground cable detector;
the data processing device adopts a 16-bit embedded computer;
the communication device adopts a 4G network module.
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