KR100811076B1 - Wireless communication method and system using natural gas media in gas pipeline - Google Patents

Abstract

The present invention periodically puts the pig into the gas pipe to ensure the integrity of the gas pipe to determine the state inside the gas pipe, and then transmits it to the valve station or regional control center to observe the internal state of the gas pipe in real time And a natural gas-based wireless communication system and method for confirming and transmitting a command signal capable of easily controlling a pig in the valve station or a local control center.

In addition, the present invention can check and observe the internal state of the gas pipe by wireless communication to improve the safety and stability of the national infrastructure as a whole, by using the user and the administrator to maximize the reliability and satisfaction in use The present invention provides a wireless communication system and method using natural gas as a medium.

To this end, the present invention is inserted into the gas pipe to check the integrity of the inside of the gas pipe, and transmits the data collected and obtained by checking the pig, and the signal to control the driving relationship to the pig It includes a valve station capable of comprehensive signal processing by receiving a pig in a pig, and a local control center that enables comprehensive signal processing at a remote location by enabling wireless communication with the pig or valve station. It is to use the camera attached to the pig to identify the welding position of the gas pipe to determine the exact position of the pig moving inside the gas pipe and to measure the moving distance.

Gas piping, wireless communication, pigtail, valve station, natural gas, camera, electronic map, NGIS, antenna

Description

Wireless communication system and method using natural gas as a medium {WIRELESS COMMUNICATION METHOD AND SYSTEM USING NATURAL GAS MEDIA IN GAS PIPELINE}

1 is a configuration example in which a part is cut to show a pig that is conventionally carried out,

Figure 2 is a configuration example cut in part to show the pigs implemented in accordance with the present invention,

3 is an embodiment configuration diagram for explaining a system executed by the present invention.

<Description of the code | symbol about the principal part of drawing>

20: Pig 21: Isolation

22: camera 23: lighting unit

24: glass cover 25: measuring device sensor

26: pig communication control unit 27: pigtail communication antenna

28: large capacity battery 30: gas piping

31: welding part 32: pigtailer

40: backbone network or dedicated network 100: valve station

110: communication antenna unit of the valve station 120: station communication control unit

130: microcomputer 140: modem and router portion of the valve station

200: regional control center 210: modem and router unit of the regional control center

220: storage unit 230: integrated monitoring unit

The present invention relates to a wireless communication system and method using natural gas as a medium to enable mutual communication between a pig and a valve station or a regional control center for safety management of a gas pipe supplied with natural gas.

More specifically, in order to ensure the integrity of the pipes for the gas pipes, the pigs are periodically put inside the gas pipes to check the state of the gas pipes, and then transmitted to the valve station or the regional control center in real time. The present invention relates to a wireless communication system and method using natural gas as a medium for observing and confirming an internal condition and transmitting a command signal for easily controlling a pig in the valve station or a local control center.

In general, natural gas (NG), which has low emissions of pollutants that can pollute the environment, is used as fuel for cooking and heating in consumers such as homes or business facilities, and its use is increasing in industrial use. . Such natural gas (NG) is also commonly used as city gas, and a gas pipe network, which is a gas supply facility for supplying to each customer, is established.

Since the above gas pipeline network is one of the important infrastructure industries of the country, if an accident occurs such as the interruption of gas supply, it will directly damage the lives of the people, thus preventing the above accident. In order to supply gas smoothly, pigs are periodically injected into the gas pipe network to inspect the cleaning and soundness of the gas pipe.

The pig is a device designed to be moved by the gas flowing into the pipe inside the pipe of the gas pipe, the initial task was to clean the inside of the pipe to remove the deposits that obstruct the flow of media such as gas, The range of applications such as the use of pigs to check the soundness of pipes buried underground over a long distance is increasing.

Accordingly, the types of pigs are largely divided into two categories, first of all, utility pigs and intelligent pigs.

The utility pig is a pig in charge of cleaning and maintenance, and the intelligent pig is mainly a pig that checks the integrity of the pipe, wherein the intelligent pig (Geometry) and magnetic flux (Magnetic Flux Leakage) have.

The geometry pig is a figure that finds out the shape and abnormality of the pipe, and finds the abnormality of the position, shape, size, and distortion of the pipe in the pipe, the dent or the convex protruding part, and the position of the pipe. It can represent the coordinate of.

In addition, the magnetic leakage pig, which is one of the intelligent pigs, detects the loss of metal caused by corrosion, external damage, etc., and has a function of finding the thickness of the pipe due to the corrosion and the like.

As shown in FIG. 1, this is an exemplary configuration diagram in which a part is cut in order to show a pig which is conventionally performed, and the isolation part 1 which allows the pig to obtain propulsion force by a pressure difference in the gas pipe. Acquiring the measured data through the measuring device sensor unit 2 for measuring the bending inside the pipe to measure the bending inside the pipe, and processing the data to be used after collecting the pigs. And the data signal acquisition unit 3 for storing, the inertial measurement unit 4 for confirming the data acquisition point using the acceleration sensor, and the moving distance of the pig using only the inertial device cannot be accurately determined. It is largely composed of a odometer (5) to measure the distance moved in contact.

Since the conventional pig 10 having the above-described configuration has no method of being inserted into the pipe and communicating with any part of the outside or the pipe, the same as the data signal acquisition unit 3 installed inside the pig 10 Install a memory or hard disk to store the data collected while proceeding inside the pipe, remove the pig 10 from the pipe, and connect the storage unit provided in the data signal acquisition unit 3 to the external computer. The stored data was analyzed.

Pigment operation in this manner has many problems as follows.

That is, when a pig is inserted into a pipe and operated, there is a problem in that the position of the pig moved by a medium such as gas in the pipe cannot be checked in real time. Therefore, when the pig is inserted into the pipe and the pig reaches its destination, You can't do anything but wait until the end.If the pig stops moving in the pipe such as gas pipe due to an unexpected accident, you can't know where the pig is, so cut the pipe to recover the pig. There is a problem that must be a large construction.

In addition, since it is difficult to install equipment that outputs a large amount of information such as a video signal, the most reliable method of verifying the soundness inside a pipe is to check the inside of the pipe using a high-performance camera or to check it. Arranging a large amount of data storage space generated by the cameras over time is also quite difficult.

In addition, since the conventional pig is difficult to pinpoint the point where a problem such as an accident occurred in the pipe, the conventional pig is equipped with a odometer and an inertial measurement unit to find the distance moved while moving inside the pipe. This has been used, which has a problem in that a slight error accumulates as time or distance increases and a difference with the actual distance appears. The difference from the actual distance shown above is that when the excavation work for collecting the pigs is carried out to solve the problem such as the stopping of the pig, the excavation work can be carried out at the position other than the exact position, which increases the overall effort and cost. Is caused.

Therefore, due to the above problems, the conventionally applied pigs find internal defects by a mechanical method, and thus the device configuration is complicated, and the mechanism for maintaining the same increases the probability of failure, thereby limiting its efficiency. As a result, the systematic management and economic feasibility of the national infrastructure facilities are lowered.

The present invention has been made to solve the problems of the prior art as described above has the following object.

The present invention periodically puts the pig into the gas pipe to ensure the integrity of the gas pipe to determine the state of the gas pipe and then send it to the valve station or regional control center to observe the internal state of the gas pipe in real time and It is an object of the present invention to provide a wireless communication system and method using a natural gas as a medium that allows the valve station or the local control center to transmit a command signal for easily controlling a pig.

Another object of the present invention is to check and observe the internal condition of the gas piping by wireless communication to improve the safety and stability of the national infrastructure as a whole, by using the user and the administrator to maximize the reliability and satisfaction in use The present invention provides a wireless communication system and method using natural gas as a medium.

In order to achieve the above object, the present invention is inserted into the interior of the gas pipe for checking the integrity of the gas pipe, and the data collected and obtained by checking in the pig and transmits the drive relationship for the pig It comprises a valve station capable of receiving a signal to the pig to control the overall signal processing, and a wireless communication with the pig or valve station to control the signal, and a local control center capable of comprehensive signal processing at a remote location, It is to use the camera attached to the pig to identify the welding position of the gas pipe installed by welding the end pipe to determine the exact position of the pig moving inside the gas pipe and to measure the moving distance.

Hereinafter, the present invention will be described in detail.

In describing the present invention, when it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the terms to be described below are terms set in consideration of functions in the present invention, which may vary depending on the intention or custom of the user and the producer, and the definition should be made based on the contents throughout the present specification.

Prior to explaining the present invention, the gas pipe is made of a steel plate and welded and buried underground, and gas natural gas (NG) in the inner space of the gas pipe is moving at a speed of 5 ~ 10m per hour, Since the inside of the gas pipe is filled with gaseous gas, it has very good condition to transmit the signal of the radio wave type, and is separated from the outside by thick steel plate and soil, so there is no need to worry about the radiation. The present invention is to enable the transmission and reception of radio waves by using a closed space inside the gas pipe.

First, the present invention is a gas pipe which is buried in the basement to smoothly move and supply the medium of the natural gas (NG) in the gaseous state, inserted into the inside of the gas pipe is a pig for checking the health inside the gas pipe And a valve station for transmitting and collecting data acquired and checked by the pig, and receiving a signal to the pig to control a driving relationship with the pig, for comprehensive signal processing, and wireless with the pig or valve station. It includes a regional control center that enables communication and enables comprehensive signal processing at remote locations.

In this case, the pig may be a camera for easily photographing the inside of the gas pipe, an illumination unit for emitting a light source so as to obtain a clear image taken by the camera, and protect the camera and the illumination unit from external impact Glass cover, an isolation unit for the pig to obtain a propulsion force by the pressure difference in the gas pipe, a measuring device sensor unit for detecting the bend in the pipe to measure the bend in the pipe, and the camera and lighting unit Pigment communication control unit for controlling and processing the data collected by the measuring device sensor unit to the outside, and gas as a medium to enable easy transmission and reception between the outside such as the pig communication control unit and the valve station A communication antenna unit for converting and transmitting a radio wave signal and an electrical signal that can communicate; For smooth operation of the communication controller, the camera and the illumination portion is comprises a high-capacity battery for supplying power.

In addition, the valve station is a communication antenna unit provided in the interior of the pig launcher installed for the inspection and use of the gas pipe, a station communication control unit connected to the communication antenna unit for controlling transmission and reception of the pig, and the station Modem and router unit connected to the communication control unit to enable data communication with the outside of the remote site, and connected to the station communication control unit to monitor the video signal taken while the pig moves in the pipe and control the pig in the field It consists of a microcomputer for generating a command signal for the, the local communication center is connected to the main communication line or dedicated communication network of the valve station connected to the modem to enable the communication with the outside to check the internal status of the gas pipe even at a remote location And a router section, the modem and router And connected to the storage and real-time storage of the video signal taken in the gas pipe, and the storage unit to easily check the health of the gas pipe in the future, connected to the modem and router to observe and confirm the image taken from a remote location And a general monitoring unit for generating a control command signal for the piglet moving inside the gas pipe.

delete

On the other hand, the present invention is a wireless communication method using a wireless communication system using a natural gas as a medium, but the piglet inserted into the inside of the gas pipe and the station communication control unit installed in the valve station to perform a gas as a medium, Converting the data collected by the communication antenna unit provided in the pig into a signal in the form of electric wave in gas, or converting the radio wave signal using gas as an electric signal that can be used in the pig; Photographing the interior of the gas pipe through a camera provided; converting image data information captured by the camera into a communication signal by a pig communication controller; and a communication antenna provided in the pig communication controller and the pig Signals transmitted through the unit (radio signals transmitted through gas) can be easily received at the valve station. Converting the signal into an electrical signal by a communication antenna unit installed in the pigtail so as to be able to be renewed, and connecting the signal received through the communication antenna unit installed in the pigtailer to a general communication device by the station communication controller; Converting the signal into a signal; storing information of an image signal, which is a signal transmitted through the station communication controller, by the microcomputer or checking the inside of the gas pipe; and image signal, which is a signal transmitted through the station communication controller; The information is transmitted to the storage and comprehensive monitoring unit of the local control center located at a remote location through a communication line such as a main communication network or a dedicated communication network, respectively, or to store the internal information of the gas pipe.

In this case, using the camera attached to the pig, measuring the moving distance of the pig using the welded portion of the gas pipe from the image signal transmitted through the camera, and using the measured geographic distance National Geographic Information System ( Performing a step of mapping the position of the pig to the data of the National Geography Information System (NGIS), mapping the image data stored in the data of the National Geographic Information System (NGIS), and converting the image data stored in the database into a gas pipe. It is to execute the step of classifying the defect types by the features.

EXAMPLE

With reference to the accompanying drawings, a preferred embodiment for achieving the present invention will be described in detail.

First, the present invention, as shown in the accompanying drawings, Figure 2 and Figure 3, Figure 2 is an exemplary view showing a part cut in order to show the pigs implemented in accordance with the present invention, Figure 3 is carried out by the present invention The implementation block diagram for demonstrating the system is shown.

That is, the present invention is to enable the transmission and reception of information so that the internal state of the gas pipe can be easily observed, confirmed and stored in real time from the outside in real time, and in this case, the medium of the gas is used for transmission and reception of the information.

To this end, the gas pipe 30 is buried underground to smoothly move and supply a medium of natural gas (NG) in a gaseous state, and is driven by the flow of gas that is moved through the gas pipe 30. The moving pig 20 is inserted into the gas pipe 30 to measure and check the state and health of the inside of the gas pipe 30.

At this time, through the pig 20, the state and integrity of the interior of the gas pipe 30 is measured and checked to transmit information, which is collected data, to the outside such as the valve station 100, the valve station ( The gas is used as a medium so that the control signal can be transmitted to the pig 20 through 100.

First, the pig 20 can move the inner passage of the gas pipe 30 by the isolation portion 21 provided on the outside, which is driven by the pressure difference generated inside the gas pipe 30 It is possible to get.

The pig 20 moved by the isolation unit 21 collects information (data) in the process of moving the inside of the gas pipe 30, which is a camera provided at the front end of the pig 20. (22) and measured by the plurality of measuring device sensor unit 25 provided on the central outer surface of the pig 20 to obtain data.

At this time, the camera 22 acquires image information by capturing the inside of the gas pipe 30, which can confirm the state of the inside of the gas pipe 30 and at the same time the welding of the taken gas pipe 30. It is possible to measure the moving distance through the portion 31, specific details for the measurement of the moving distance will be described below.

Then, the measuring device sensor unit 25 is to detect the bending inside the pipe to measure the bending inside the gas pipe (30).

The light source is emitted through the lighting unit 23 so that the image photographed by the camera 22 can be clearly obtained, and the glass 22 can be protected from external impact on the camera 22 and the lighting unit 23. It is covered by the cover 24.

In this case, the pig communication control unit 26 provided inside the pig 20 controls the camera 22, the group list 23, and the measuring device sensor unit 25, respectively, and simultaneously processes the acquired data. It is mutually transmitted to the communication antenna unit 27 provided at the rear end of the pig 20 so as to enable transmission and reception with the outside.

In addition, power is supplied by the large-capacity battery 28 to smoothly drive the pig communication control unit 26, the camera 22, and the lighting unit 23.

Pig 20 according to the present invention having the above-described configuration is provided with a camera 22 that can be photographed to obtain image information, so the inertia measuring unit 4 and the odometer 5 of the conventionally performed pig ), The communication part is applied instead.

Accordingly, the communication antenna unit 27 is a radio wave signal and an electrical signal capable of communicating with gas as a medium to enable easy transmission and reception between the outside, such as the pig communication control unit 26 and the valve station 100. It is converted and transmitted, which is exposed to the gas moving through the gas pipe 30 so that the captured image signal is converted into a radio wave signal that can communicate with the gas inside the gas pipe 30 as a medium In addition, when the control command signal transmitted from the valve station 100 or the regional control center 200 arrives as a radio wave signal using gas as a medium, the control command signal is received and converted into an electrical signal and transmitted to the pig communication control unit 26. It is to be made.

When the communication antenna unit 27 transmits information (data) to the outside, the communication antenna unit 27 generates an electric signal that is easy to emit radio waves to the gas in the gas pipe 30, and the pig communication control unit 26 is a valve. Each component provided in the pig 20 by amplifying and selecting a weak signal transmitted through the communication antenna unit 27 to control the pig 20 from the outside such as the station 100 or the regional control center 200. It is to control the operating relationship to the parts.

As described above, not only the state of the gas pipe 30 can be checked in real time in the valve station 100, but also wireless communication is possible, so that comprehensive signal processing can be performed at a remote location such as the regional control center 200. It becomes possible to be observed and confirmed in real time.

Accordingly, referring to the valve station 100 and the regional control center 200, first, the valve station 100 has a separate communication antenna unit 110 to check and use the gas through the gas pipe 30. In order to receive not only various information (data) transmitted from the pig 20, but also control signals for controlling the pig 20 can be received. will be.

Accordingly, the signal transmitted from the communication antenna unit 27 of the pig 20 is received by the communication antenna unit 110 of the valve station 100, the received signal to the station communication control unit 120 The transmission and transmission with the pig 20 is possible.

In addition, the microcomputer 130 connected to the station communication control unit 120 monitors the image signal photographed while the pig 20 moves inside the gas pipe 30, and the micom 130 is a user. It is possible to transmit a command signal for the control to enable the station to control the pig 20 to the station communication control unit 120.

In addition, the valve station 100 may receive an information (data) signal transmitted by the pig 20 to a regional control center 200 located at a remote location, which is a modem and a router of the valve station 100 ( 140 and the modem and router 210 of the regional control center 200 are interconnected by a wired backbone communication network or a dedicated communication network 40 to enable data communication.

That is, in a state in which communication is possible so that the internal state of the gas pipe 30 can be checked by the modem and router unit 210 of the local communication center 200, the gas pipe is connected through the camera 22 of the pig 20. The image signal photographed inside the 30 is stored in real time by the storage unit 220, and the health of the future gas pipe 30 can be checked at any time using the information stored by the storage unit 220. will be.

In addition, by the comprehensive monitoring unit 230 connected to the modem and the router unit 210 can not only observe and confirm the image taken by the pig 20 in real time, but also move the inside of the gas pipe 30. The control command signal to the pig 20 can be generated and transmitted to the pig 20.

On the other hand, it is possible to check the moving distance and the position of the pig 20 that is moving inside the gas pipe 30, which is the portion 31 for welding to connect each steel pipe in order to install the gas pipe 30 To identify and confirm.

That is, when the inside of the gas pipe 30 is photographed by using the camera 22 attached to the pig 20, the welding portion 31 of the gas pipe 30 is photographed, so that the gas pipe 30 of the gas pipe 30 is photographed. At the same time the exact position of the pig 20 moving inside it is determined that the moving distance of the pig 20 is measured.

Accordingly, the information about the position and the moving distance of the pig 20 is received at the valve station 100 and mapped onto the electronic map and stored and recorded in the coordinate system, and each image data is designated by the coordinate system index. It can be databased.

As described above, when the position and the moving distance with respect to the pig 20 is mapped to an electronic map or designated as a coordinate system index to make a database, the pig 20 on the gas pipe 30 when the pig 20 is operated. In addition to being able to check the location point of the real-time, as well as the search of data for the maintenance of the gas pipe 30 in the future using the coordinate system is very fast, at the same time it is possible to easily estimate the defects of the gas pipe 30 will be.

The method for a wireless communication system using natural gas as a medium according to the above configuration is to communicate with the pig 20 inserted into the gas pipe 30 and the valve station 100 or the regional control center 200. It is for performing with gas as a medium.

To this end, the data collected by the pig 20, that is, the communication signal provided in the pig 20 with an image signal photographed inside the gas pipe 30 through the camera 22 provided in the pig 20 The antenna unit 27 converts the signal into the form of electric wave in the gas or converts the signal of the gas into the electric signal that can be used by the pig 20, and the pig communication control unit 26. It converts into a communication signal.

In this case, a signal (radio signal transmitted through gas) transmitted through the pig communication control unit 26 and the communication antenna unit 27 provided in the pig 20 so that the valve station 100 can be easily received. The communication antenna unit 110 installed inside the pigtailer 32 is converted into an electrical signal, and then the signal received through the communication antenna unit 110 is transmitted to the general communication device by the station communication controller 120. It is executed to convert the signal into a form of accessable, and the information of the video signal transmitted by the above execution is stored in real time through the microcomputer 130 or observe and confirm the state of the interior of the gas pipe 30 This is done to make it possible.

In addition, the storage unit 220 of the local control center 200 located at a remote location through a communication line such as a main communication network or a dedicated communication network 40 to the information of the video signal that is a signal transmitted through the station communication control unit 120 and Is delivered to each of the integrated monitoring unit 230 is to be stored in real time or to be able to observe and confirm the interior of the gas pipe 30.

Accordingly, the storage of the information on the interior of the gas pipe 30 and can be easily observed and confirmed by the user, and transmitted through the camera 22 using the camera 22 attached to the pig 20. Measuring the moving distance of the pig 20 using the welding portion 31 of the gas pipe 30 of the image signal, the geographic information system (Geography Information System, Mapping the position of the pig 20 to the data of the GIS is to be further performed.

In this case, when the image data stored in the data of the geographic information system (GIS) is mapped, the defect type of the gas pipe 30 can be distinguished by characteristics, and it can be databased so that the gas pipe 30 can be made in the future. At the same time, retrieval of data for maintenance can be performed very quickly, and defects in the gas pipe 30 can be easily estimated.

Finally, the configuration of the wireless communication system and method using the natural gas as a medium of the present invention can be variously modified and can take various forms.

It is to be understood, however, that the present invention is not limited to the specific forms referred to in the above description, but rather includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

As described above, the present invention has been practiced in the related art because communication with a pig that checks the integrity of the interior of the gas pipe is possible in real time using the gas moving into the gas pipe as a medium for radio wave communication. It is possible to inspect even the more difficult part than inspection, and the high-performance camera is attached to the pigtail so that even the smallest part can be inspected, thereby preventing the big disaster that may occur in the future.

In addition, the present invention is an effect that can easily observe and confirm the inspection status of the gas pipe from the outside by a simple communication equipment and camera, and the efficient inspection is possible to perform the inspection state at a lower cost than the conventional pig It can be effective.

In addition, since the present invention can measure the position and the moving distance with respect to the pig, there is an effect of finding the exact point for the maintenance and repair of the gas pipe in the future and the effect of greatly reducing the time and cost of repair, and stored Since it is possible to make a database by classifying the types of defects in gas piping from the image data, it is possible to estimate and classify defects in the gas piping in the future, thereby maximizing the satisfaction and reliability of the overall system. There is.

Claims (14)

In the gas pipe to be buried underground to smoothly move the gas supply of natural gas (NG) gas supply, A pig inserted into the gas pipe to check the integrity of the gas pipe; A valve station capable of comprehensive signal processing by transmitting data collected and acquired by checking in the pig and receiving a signal in the pig to control a driving relationship to the pig; A local control center that enables wireless communication with the pig or valve station and enables comprehensive signal processing even at a remote location; Wireless communication system using natural gas as a medium comprising a. delete The method of claim 1, The pig has a camera for easily photographing the inside of the gas pipe; An illumination unit for emitting a light source so as to clearly obtain an image captured by the camera; A glass cover to protect the camera and the lighting unit from an external impact; An isolation unit for the pig to obtain a driving force by the pressure difference in the gas pipe; A measuring device sensor unit for detecting a bend in the pipe to measure the bend in the pipe; A pig communication control unit for controlling the camera and the lighting unit, and processing the data collected by the measuring unit sensor unit and transferring the collected data to the outside; A communication antenna unit for converting and transmitting a radio signal and an electrical signal capable of communicating with gas as a medium to facilitate transmission and reception between the pig communication control unit and an external device such as a valve station; A large capacity battery for supplying power for smooth driving of the pig communication control unit, the camera and the lighting unit; Wireless communication system using natural gas as a medium comprising a. The method according to claim 1 or 3, The outer side of the pig is provided with a plurality of isolating portion for obtaining the propulsion force by the pressure difference in the gas pipe, the front end of the pig is provided with a camera for photographing the inside of the gas pipe and the lighting unit for emitting a light source, respectively, The front cover of the camera and the lighting unit is provided with a glass cover for protection, the central outer surface of the pig is provided with a plurality of measuring device sensor for sensing to measure the bending inside the pipe, the inside of the pig control each component And a pigtail communication control unit for processing the collected data and a large-capacity battery for supplying power to each component is provided, respectively, the rear end of the pig is provided with a communication antenna for enabling mutual transmission and reception with the outside Wireless communication system using natural gas as a medium. The method according to claim 1 or 2, The valve station includes a communication antenna unit provided in the inside of the pig launcher installed for the inspection and use of the gas pipe; A station communication control unit connected to the communication antenna unit for controlling transmission and reception with a pig; A modem and a router unit connected to the station communication control unit to enable data communication with an outside of a remote place; A microcomputer connected to the station communication control unit for monitoring a video signal photographed while the pig moves in the pipe and generating a command signal for controlling the pig in the field; Wireless communication system using natural gas as a medium comprising a. The method of claim 2, The regional communication center may be connected to a wired main communication network or a dedicated communication network connected to a valve station, and a modem and a router unit capable of communicating with the outside so as to check an internal state of a gas pipe even at a remote location; A storage unit connected to the modem and the router unit to store an image signal captured by a gas pipe in real time, and to easily check the health of the gas pipe in the future; A general monitoring unit connected to the modem and router unit to observe and confirm an image photographed from a remote location, and to generate a control command signal for a pig moving inside the gas pipe; Wireless communication system using natural gas as a medium comprising a. delete delete delete Pigment embedded in the gas pipe which is buried underground to smoothly move and supply the medium of gaseous natural gas (NG) to check the integrity of the gas pipe, and collects and collects In order to transmit data and control the driving relationship to the pig, it is composed of a valve station capable of comprehensive signal processing by receiving a signal to the pig, Performing communication between the pig inserted into the gas pipe and the station communication control unit installed in the valve station using gas as a medium, and the data collected from the pig propagated to the gas by a communication antenna unit provided in the pig; Converting a signal of a form or a radio wave signal using gas as a medium into an electric form that can be used in a pig, photographing the inside of the gas pipe through a camera provided in the pig, Converting the image data photographed by the camera into a communication signal by the pig communication control unit, and the signal transmitted through the communication antenna unit provided in the pig communication control unit and the pig (radio wave signal transmitted through the gas) valve station By the communication antenna installed inside the pigtail so that it can be easily Converting into a call, converting a signal received through a communication antenna installed in the pigeon into a signal which can be connected to a general communication device by a station communication controller, and a signal transmitted through the station communication controller. Storing information of the video signal by a microcomputer or checking the inside of the gas pipe; In the step of converting into a signal of a type that can be connected to a general communication device by the station communication control unit, the information of the video signal which is a signal transmitted through the station communication control unit located in a remote location through a communication line such as a main communication network or a dedicated communication network Wireless communication method using natural gas as a medium, characterized in that for performing the step of transmitting to the storage unit and the comprehensive monitoring unit of the regional control center, or to check the inside of the gas pipe. delete The method of claim 10, Measuring a moving distance of a pig using a welding portion of a gas pipe in an image signal transmitted through the camera using a camera attached to the pig; And Mapping the position of the pig to the data of a geographic information system (GIS) using the measured movement distance; Wireless communication method using natural gas as a medium, characterized in that for further executing. The method of claim 12, In the step of mapping the position of the pig to the data of the geographic information system (GIS), further comprising the step of mapping the image data stored in the data of the geographic information system (GIS) to the natural gas as a medium One wireless communication method. The method of claim 13, And storing the image data stored in the database into a database to classify the defect types of the gas pipes by characteristics.

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