KR101166887B1 - System of measuring with gps for underground map - Google Patents

Abstract

PURPOSE: A GPS base geodetic surveying system for manufacturing a map of underground facilities is provided to accurately record location information and topographic information of the underground facilities and to renew the location information and the topographic information of the underground facilities when topography is changed. CONSTITUTION: An underground detecting unit(1310) comprises an RFID sensor(1311), a first flux gate sensor(1312), and a second flux gate sensor(1313). The RFID sensor wirelessly detects an ID or a unique number which is wirelessly outputted from an RFID included in a magnetic marker unit. The first flux gate sensor and the second flux gate sensor respectively measure a magnetic field generated in the magnetic marker unit in its own location. A digital gradient meter(1320) digitally mixes a magnetic field wave form inputted from the first flux gate sensor and the second flux gate sensor.

Description

GPS based geodetic surveying system for mapping underground facilities {System of measuring with GPS for underground map}

The present invention relates to a GPS-based geodetic surveying system for the mapping of underground facilities, and more specifically, to use underground location information of GPS satellites to record and update and manage the survey information and topography changes of artificial facilities installed underground. A GPS-based geodetic survey system for mapping a facility.

Survey measures the position of certain points on the earth's surface, underground, underwater and space, and displays the results in drawings and figures, calculates distances and heights, areas, volumes and displacements, It is defined as reproducing.

Surveying includes mapping, coastal sea surveys, survey photography. In other words, surveying analyzes the inter-positional relationship and characteristics of the points in the earth and outer space, and analyzes natural objects and artificial facilities in all areas that human activities can affect, including the surface, underground, underwater, ocean, space and space. Include.

Surveying or surveying numerically identifies the length, angle, time, direction, etc., and analyzes the combination of distances and angles considering planes, surfaces, and spaces to determine horizontal and vertical positions and coordinates the position with time or figure. It is a quantitative interpretation method that expresses dimensionally.

Meanwhile, qualitative analysis may be performed as meaning of collecting, analyzing, and processing topographic information about environment and resources.

These surveys are obtained by surveying and observing objects in a relatively complex way, and recently, using the Global Positioning System (GPS) has dramatically improved the precision, and the results of the survey are analyzed, planned, designed, evaluated and maintained. It can be used for management.

The work procedure until the final result of the survey is obtained requires a lot of work procedures such as collecting survey data in the field, computer input and digital processing in the office even when using the GPS method.

Due to the continuous improvement of the level of economy, society, culture and industry, various underground facilities and underground common areas buried in the ground by numerous organizations such as national, local government, electric company, water resources corporation, gas corporation, telecommunication company, district heating corporation, etc. Most of them are cobwebs in the underground space of depth within 3 to 5 meters (m) below ground level.

Due to the inaccurate location of the underground facilities or underground facilities, the damage of various accidents occurring during construction is increasing significantly compared to the past.

As underground facilities are not only social infrastructures but also information infrastructures, various accidents and disasters related to underground facilities have not only direct physical and physical damages but also economic damages of the people.

In addition, underground facilities need to be replaced, maintained, and repaired due to aging, expansion, etc., but there is a difficulty in visually determining the location and state because the corresponding geographic information is not accumulated.

As a technique for surveying cadastrals according to the prior art, there is a method and service for providing cadastral surveying service using a mobile communication terminal according to Korean Patent Application No. 10-2006-0011632 (2006. 02. 07.).

1 is a functional block diagram illustrating a mapping GPS based geodetic surveying system according to an embodiment of the prior art.

Hereinafter, referring to the accompanying drawings, the GPS-based geodetic surveying system according to the prior art includes a mobile communication terminal 100, a wireless access network 110, a mobile communication switching center 120, an SMS center 130, Home Location Register 135, Manganese Interworking Device 140, WAP Gateway 145, LBSP 150, Location Server 152, Location Center 154, Intellectual Information Server 180, Internet Registry Server 190 And U-intellectual map server 160.

The mobile communication terminal 100 accesses the U-information server 160 to receive intellectual information for cadastral surveying, and the U-information server 160 requests user authentication.

The U-cadastral information server 160 identifies the location of the mobile communication terminal 100 that has succeeded in authentication and displays the location of the mobile communication terminal 100 on the electronic map of the corresponding area.

The U-intellectual map server 160 manages and provides electronic map information mapped with cadastral information provided by the cadastral information server 180.

The U-information map server 160 inquires whether or not to use the number and border line marking service by the UI, and terminates the cadastral survey service if the mobile communication terminal 100 does not use the service.

When the mobile communication terminal 100 uses the service, the U-intellectual map server 160 connects to the intellectual information server 180 and uses the cadastral information including the boundary of the branch number and the branch number of the location where the mobile communication terminal 100 is located. Receive, match and overlap the cadastral map information and the electronic map information and provide billing processing.

The U-intellectual map server 160 inquires whether to use the registered copy reading service using the UI, and terminates the intellectual surveying service if the service is not used, and accesses the Internet registry server 190 to use the mobile communication terminal. Receives, transmits and charges a copy of the register of the branch or branch where 100 is located.

The prior art has the advantage of being able to quickly check information such as boundaries, cadastral maps, etc. for an arbitrary area or location.

However, the prior art has a problem that can not manage the recording and updating information about the features including the topography and artificial structures underground.

Therefore, there is a need to develop a technique for recording and updating management of underground facilities and terrain changes.

In order to solve the problems and necessity of the prior art as described above, the present invention provides a GPS-based geodetic surveying system for the mapping of underground facilities to record and update the underground facilities and terrain information based on the GPS information.

GPS-based geodetic surveying system for the mapping of underground facilities to achieve the object of the present invention amplifies the RF transmitter and the radio received signal with a low noise and down-converts the frequency of the signal to be radio-transmitted and up-converted A wireless communication unit 1110 including an RF receiver, a transmission processing unit for controlling transmission and reception, controlling and monitoring each function unit, encoding and modulating a transmitted signal, and demodulating the received signal, by connecting to the wireless communication unit 1110. A data processing unit having a receiving processing unit for decoding, the data processing unit comprising a modem and a codec, and the codec is a control unit having a data codec for processing packet data and an audio codec for processing audio signals of voice. 1120, the controller 1120 is connected to the GPS data according to the control signal. The program is connected to the GPS receiver 1130 and the control unit 1120 and comprises a program memory and a data memory. The program memory controls a general operation for mobile communication by a corresponding control signal of the control unit 1120. A memory (1140) for storing a program for analyzing current PS data and managing current position information, the data memory storing various data generated while the program is executed, and for storing current position information by analyzing the GS data; It connects to the control unit 1120, and outputs the received audio signal output from the audio codec of the data processing unit constituting the control unit 1120 through the speaker SPK according to the control signal, thereby reproducing the song generated from the microphone MIC. Input the audio signal of the credit and the audio of the data processing unit An LCD control unit connected to the audio processing unit 1150 and the control unit 1120 to transmit to a codec, and outputs and displays the state of the mobile terminal 100 on the LCD display device according to the control signal and controls the LCD display device. And a memory for storing data to be displayed, the display unit 1160 operating as a touch screen and a control unit 1120 connected to the control unit 1120 and inputting numbers, letters and function commands according to the corresponding control signals. A key input unit 1170 including a number key for inputting information and transferring to the control unit 1120 and a function key for setting a specific function, connected to the control unit 1120, and inputs data from the outside by a corresponding control signal; A data input unit 1180 for transmitting to the control unit 1120, a photographing unit 1 for connecting to the control unit and transmitting an image signal photographed by the control signal to the control unit 1. A mobile communication terminal 1100 comprising a 190; A GPS satellite 1200 which wirelessly transmits GPS data which can be analyzed as longitude, latitude, elevation, and time information to the mobile communication terminal 1100 and operates a plurality of satellites 20 kilometers above the ground altitude; The GPS data is received from the GPS satellite 1200 and the underground facilities are detected from the magnetic marker unit 1360 using magnetic field and RFID information and provided to the mobile communication terminal 1100. RFID sensor 1311 for wirelessly detecting the unique information, first fluxgate sensor 1312 and second fluxgate sensor 1313, which are installed on the same axis and measure the same magnetic field at different positions, respectively. The RF ID information is input from the sensor 1311 and output as digital data. The signals of the measured magnetic field waveform are input from the first fluxgate sensor 1312 and the second fluxgate sensor 1313, respectively. Create a frequency signal that corresponds to the difference of, and digitally measure the magnitude of the The digital gradient meter 1320 converts and outputs the data, the input interface 1321 for inputting and transmitting the signal output from the digital gradient meter 1320 in a matched state, and receives and calculates a signal from the input interface 1321. A microprocessor 1322 for analyzing the intensity of the detected magnetic field and storing and outputting the analysis result and the RFID information in its own storage means, and outputting the analysis result and RFID output by the microprocessor 1322. Output interface (1323) for converting the information into the corresponding letters, numbers, and graphics, and outputs the analysis result and RFID information output by the output interface (1323) in the corresponding letters, numbers, and graphics, and displays the corresponding information by touch. Connect to the LCD display 1324 and the microprocessor 1322 for input. Connects to the GPS receiver 1332 and the microprocessor 1322, which transmits GPS information, which is wirelessly received from the GPS satellite 1200 at the current position, to the microprocessor 1322 by a control signal, and a corresponding control signal. Connects to an external system or the mobile communication terminal to transmit data of the detected RFID and the measured magnetic field, or is connected to an external GIS system to inquire and receive a setting report at a current location by The first fluxgate sensor 1312 converts the digital data signal output from the digital gradient meter 1320 and the external system connection unit 1332 and the analog signal in the range of 0 to 2.5 volts (V) to the processor 1322. ) And the intensity corresponding to the magnitude of the magnetic field detected by the second fluxgate sensor 1313 respectively. A digital analog converter 1325 for outputting an audio signal, a sensitivity adjusting unit 1326 for adjusting the sensitivity of the input or output signal by adjusting the threshold voltage of the digital analog converter 1325, and the digital analog converter 1325 The voltage controlled oscillator 1327 and the voltage controlled oscillator 1327 output the analog signal output in the range of 0 to 2.5 volts (V) and convert the signal into an audio frequency band corresponding to the input analog signal. A voice amplifier 1328 for amplifying and outputting power of an audio signal, a volume controller 1329 for adjusting a volume level of a signal output from the voice amplifier 1328, and an audio signal output from the voice amplifier 1328 A magnetic measurement terminal 1300 including a speaker 1330; A mobile communication system (1400) for wirelessly connecting to the mobile communication terminal (1100) to receive the detected RF ID information and the measured magnetic field information and to set and provide a requested communication path; A communication network 1500 connected to the mobile communication system 1400 and providing a communication path by wire or wirelessly according to a control signal; Receives the detected RF ID information and the measured magnetic field information transmitted by the mobile communication terminal 1100 by the communication network 1500 and records them in an allocated area or detects the detected RF from the magnetic measuring terminal 1300. A management server 1600 which directly receives ID information and the measured magnetic field information, records in an allocated area, and analyzes and records the recorded information; And a GS that connects to the mobile communication terminal 1100 by the communication network 1500 and searches for and provides the setting information corresponding to the GPS location information of the area where the self-measuring terminal 1300 is currently located according to the request signal. System 1700; . ≪ / RTI >

The magnetic marker portion of the permanent magnet of 10 to 100 gauss; A coating part coated with a plastic or an acrylic resin after sequentially coating the outside of the permanent magnet with nickel plating or urethane; And an RFID that is fixedly installed on a portion of the upper surface of the coating unit to record and serially output a unique serial number. Including, the permanent magnet has a lower end (S) polarity and the upper end may be disposed in the (N) polarity.

The control unit 1120 controls the GPS receiver 1130 to operate in the GPS data receiving mode and analyzes the GPS data received from the GPS satellite 1200 to determine the information including the latitude, longitude, and sea level of the current location. May be determined and periodically checked and stored in the memory 1140.

The microprocessor 1322 retrieves the respective setting information from the GPS system by using the current location information received through the GPS receiver 1332 and receives letters and numbers on the LCD display 1324. It can output to any one or more selected from among the graphics.

According to the present invention, the above configuration can accurately record the location information and the terrain information of the facilities installed underground based on the GPS, and update and manage the location information and the terrain information of the underground facilities due to the terrain change.

1 is a functional block diagram illustrating a mapping GPS based geodetic surveying system according to an embodiment of the prior art
2 is a functional configuration diagram of a GPS-based geodetic surveying system for the mapping of underground facilities according to an embodiment of the present invention,
3 is a functional configuration diagram of a mobile communication terminal according to an embodiment of the present invention;
4 is a functional configuration diagram of a magnetic measuring terminal according to an embodiment of the present invention;
5 is a cross-sectional configuration diagram of a magnetic marker unit according to an embodiment of the present invention;
And
FIG. 6 is a diagram illustrating a state in which a magnetic marker unit is installed in the ground and measured by a specific terminal on the ground according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

2 is a functional configuration diagram of a GPS-based geodetic surveying system for the mapping of underground facilities according to an embodiment of the present invention, Figure 3 is a functional configuration diagram of a mobile communication terminal according to an embodiment of the present invention, 4 is a functional configuration diagram of a magnetic measurement terminal according to an embodiment of the present invention, Figure 5 is a cross-sectional configuration diagram of the magnetic marker unit according to an embodiment of the present invention, Figure 6 is a ground according to an embodiment of the present invention It is a block diagram illustrating the state where a magnetic marker is installed on the ground and the magnetic terminal is measured on the ground.

Hereinafter, referring to the accompanying drawings in detail, the GPS-based geodetic surveying system 1000 for mapping an underground facility includes a mobile communication terminal 1100, a GPS satellite 1200, a magnetic measurement terminal 1300, and a mobile communication system. 1400, the communication network 1500, the management server 1600, and the GS system 1700.

The mobile terminal 1100 includes a wireless communication unit 1110, a controller 1120, a GPS receiver 1130, a memory 1140, an audio processor 1150, a display unit 1160, a key input unit 1170, and a data input unit 1180. And a photographing unit 1190.

The wireless communication unit 1110 performs a wireless communication function of the mobile terminal 1100 and wirelessly communicates with the mobile communication system 1400 in a CDMA manner.

The wireless communication unit 1110 may include an RF transmitter for up-converting and amplifying a frequency of a baseband signal to be wirelessly transmitted using a CDMA method, an RF receiver for low noise amplifying a signal received wirelessly using a CDMA method and downconverting a frequency to a baseband. Include.

The controller 1120 performs a function of controlling the overall operation of the mobile communication terminal 1100. The control unit 1120 includes a data processing unit including a transmission processing unit for encoding and modulating a transmitted signal and a reception processing unit for demodulating and decoding a received signal.

The data processor may be configured of a modem and a codec.

Here, the codec includes a data codec for processing packet data and the like and an audio codec for processing audio signals such as voice. In addition, the controller 1120 may control the GPS receiver 1130 to perform a GPS reception mode for receiving a GPS data signal.

The controller 1120 analyzes the GPS data signal received from the GPS satellite 1200 to check and determine the location information including the latitude, longitude, altitude, elevation, etc. of the current location. In addition, the controller 1120 periodically checks and determines the location information by the GPS data of the current location and stores the location information in the memory 1140.

The GPS receiver 1130 performs a function of receiving GPS data from the GPS satellite 1200.

The Global Positioning System (GPS) satellite is a global positioning system using 24 GPS satellites 1200 that constantly travel at an altitude of about 20-25 km (Km), preferably about 20.183 km on average.

The memory 1140 may be configured of a program memory and data memories. The program memory may store programs for managing the current location information by analyzing programs for controlling the general operation of the mobile communication terminal 1100 and the GPS data. The data memory may store data generated while executing programs. In addition, the memory 1140 may store the current location information confirmed by the analysis of the GPS data.

The audio processor 1150 outputs the received audio signal output from the audio codec of the data processor configured in the controller 1120 through the speaker SPK, so that the audio processor 1150 reproduces or inputs a transmission audio signal generated from the microphone MIC. It transmits the audio codec of the processor.

The display unit 1160 displays the state of the mobile terminal 100 according to a control signal of the controller 1140 and may be configured as an LCD display device.

The display unit 1160 may include an LCD control unit for controlling the LCD, a memory for storing data to be displayed, an LCD display element, and the like. When the LCD is implemented using a touch screen method, the input unit may include an LCD. It may be operated negatively.

The key input unit 1170 includes a numeric key and a function key for setting a specific function. The key input unit 1170 is connected to the control unit 1120 and activated by a corresponding control signal and is activated through the activated keys. Input information including a character, a function command, and transmit the same to the control unit 1120.

The data input unit 1180 connects to the magnetic measurement terminal 1300 according to a control signal of the controller 1140, inputs corresponding data from the connected magnetic measurement terminal 1300, and transmits the corresponding data to the control unit 1120.

The photographing unit 1190 photographs by the corresponding control signal of the controller 1140 and transmits the photographed signal to the controller 1140.

The surrounding environment photographed by the photographing unit 1190 may be the surrounding environment of the corresponding location measured by the magnetic measuring device 1300.

The GPS satellite 1200 transmits a GPS data signal to the earth, which can be analyzed by longitude, latitude, sea level, and time information and operates by a plurality of 24 at an altitude of 20 to 25 km (Km) above the ground.

The magnetic measuring terminal 1300 receives a GPS data signal from the GPS satellite 1200, measures magnetic field information from the magnetic marker unit 1360 attached to the underground facility, detects RFID information, and measures The detected information is provided to the management server 1600 connected through the mobile communication terminal 1100 or directly connected to the management server 1600.

In addition, the self-measuring terminal 1300 may be connected to the GS system to search and receive every setting report.

The magnetic measurement terminal 1300 includes a ground detector 1310, a digital gradient meter 1320, an input interface 1321, a microprocessor 1322, an output interface 1323, an LCD display device 1324, and digital analog. Converter 1325, sensitivity control unit 1326, voltage controlled oscillator 1327, voice amplifier 1328, volume controller 1333, speaker 1330, GPS receiver 1332, external system connection 1333 It is a constitution.

The ground detection unit 1310 includes an RFID unit 1311, a detection unit 1315 including a first fluxgate sensor 1312 and a second fluxgate sensor 1313.

The first fluxgate sensor 1312 and the second fluxgate sensor 1313 are installed in the detector 1315 in a state where the center axes thereof coincide with each other, and the RFID sensor 1311 is installed together.

The RFID sensor 1311 wirelessly detects an ID number or a unique number that is wirelessly output from the RF ID 1363 included in the magnetic marker unit 1360, and the first fluxgate sensor 1312 and the second fluxgate. The sensor 1313 measures the magnetic field generated by the magnetic marker unit 1360 at each position. The unique number of the detected RFID and the measured magnetic field information are inputted into a digital gradient meter (1320).

In this case, since the first fluxgate sensor 1312 and the second fluxgate sensor 1313 are installed in a state where the axes coincide with each other, magnetic fields having the same size output from the magnetic marker unit 1360 are respectively provided at different positions. Measure differently.

That is, since the distance value of the first fluxgate sensor 1312 and the second fluxgate sensor 1313 and the sensitivity value of the magnetic field which can be measured are known, the distance to the magnetic marker part is analyzed when the measured magnetic field value is analyzed. You can guess the value.

The digital gradient meter 1320 digitally mixes the magnetic field waveforms input from the first fluxgate sensor 1312 and the second fluxgate sensor 1313. That is, the respective detected and converted input magnetic field signal to a frequency, to produce a frequency signal corresponding to the difference of each frequency, and at the same time converts the magnitude of the frequency mixed with the two frequency waveform to digital data and outputs.

Meanwhile, the digital gradient meter 1320 outputs the RFID information signal input from the RFID sensor 1311 as a corresponding digital data signal.

Digital data output from the digital gradient meter 1320 is input in a matched state through the input interface 1321 and transmitted to the microprocessor 1322 for outputting as a number or a graph.

The microprocessor 1322 has a storage means itself, receives a digital signal corresponding to the strength of the magnetic field, calculates the strength of the magnetic field generated by the magnetic marker unit 1360, and the calculated value is an output interface 1323. ) Is output to the LCD display 1324 in the form of letters, numbers or graphs. The strength of the magnetic field calculated here may be converted into a corresponding distance value.

In addition, the microprocessor 1322 outputs the RFID information inputted from the input interface 1321 to the LCD display 1324 through the output interface 1323 as corresponding numbers and letters.

Since the magnetic marker unit 1360 is provided with a plurality, each unique number or RFID information is recorded in the RFID 1363.

Analysis of the RFID information can confirm the information such as the location, depth, type, installation date and time installed with the underground facility (2000).

In addition, the microprocessor 1322 is connected to a GPS receiver 1332 and an external system connector 1333.

The GPS receiver 1332 wirelessly receives the current position information or the GPS information (data) at which the ground detector 1310 is located from the GPS satellite 1200.

The position information (GPS information) received by the GPS receiver 1332 is processed by the microprocessor 1322 and recorded and stored in the storage means of the microprocessor 1322.

The external system connection unit 1333 is connected to the mobile communication terminal 1100 under the control of the microprocessor 1322 and transmits the detected and measured data.

In addition, the external system connection unit 1333 may query the setting information of the area currently measured by being connected wirelessly or by wire through the external GIS system 1700 and the mobile communication terminal 1100.

The self-measuring terminal 1300 may compare the existing falconed beams inquired by the control command with the measured falconed beams and update them in different cases to control the data to be recorded in the corresponding memory area of the GIS system 1700. .

The microprocessor 1322 receives the current position information from the GPS receiver 1332 if the magnetic marker unit 1360 is buried by referring to the digital data output from the digital gradient meter 1320. From the external GIS system 1700 connected through the system connection unit 1333, the preset information of the area corresponding to the current location information is inquired and received or provided.

In addition, the microprocessor 1322 compares and searches the setting beams and the location information to check the setting information for the underground buried material, and outputs them in the form of letters, numbers, or graphics to the LCD display device 1324 through the output interface 1323. Can be.

In addition, the microprocessor 1322 provides the current location information received through the GPS receiver 1332 or information on the underground buried material that the user wants to search from the GIS system 1700 with or without the magnetic marker 1360. Alternatively, only the information may be input and output to the LCD display 1324 in any one or more selected from a graphic, numeric, and graphic format by a user interface (UI).

In addition, the digital data output from the digital gradient meter 1320 outputs the digital data signal to the digital-analog (D / A) in order to output an audio signal having an intensity corresponding to the magnitude of the magnetic field detected from the magnetic marker unit 1360. Send to converter 1325.

The digital-to-analog converter 1325 outputs the input digital data signal as an analog audio signal in the range of 0 to 2.5V.

The sensitivity adjusting unit 1326 may adjust the sensitivity or sensitivity of the signal by adjusting the threshold voltage of the digital-analog converter 25.

The analog signal converted into the 0 to 2.5 V range is processed by the voltage controlled oscillator 1327, converted into a frequency band of the audio signal which can be audibly heard by a human, and the power level of the audio signal is transmitted to the voice amplifier 1328. By amplification by the speaker 1330 is output to the outside as an audio signal through the speaker 1330.

That is, the magnetic field signal detected by the magnetic marker unit 1360 varies depending on the depth in which the magnetic marker unit 1360 is embedded. In order to express the difference as an audio signal, the speaker 1330 is used as an example. In order to drive the speaker 1330, a voltage controlled oscillator 1327 for generating an oscillation frequency corresponding to a signal difference is required, and a voice amplifier 1328 necessary for driving the speaker 1330 is required to receive this output. .

The volume controller 1327 connected to the voice amplifier 1328 is for adjusting the volume level of the audio signal output to the speaker 1330.

Further, the first fluxgate sensor 1312, the second fluxgate sensor 1313, and the digital gradient meter 1320 are preferably operated by the same constant voltage source of +5 V, and the digital to analog converter 1325 The voltage controlled oscillator 1327 and the voice amplifier 1328 are preferably driven by other constant voltage sources.

Separating the constant voltage source is to prevent the RFID sensor 1311, the first fluxgate sensor 1312, and the second fluxgate sensor 1313 from malfunctioning due to a change in the voltage output from the constant voltage source.

In addition, the ground detection unit 1310 measures the magnetic marker unit 1360 by the first fluxgate sensor 1312 and the second fluxgate sensor 1313 to generate a signal indicating the presence or absence of the magnetic marker unit 1360. While the output frequency is mixed in the digital gradient meter 1320, the mixing (Mixing) process to measure the difference between the magnetic field or magnetic field value.

The output from the digital gradient meter 1320 is a parallel data structure that varies with the magnitude of the mixed frequencies.

In addition, an output signal representing a plurality of sign bits may be further included. The sine bit indicates which of the first fluxgate sensor 1312 and the second fluxgate sensor 1313 has a large value of the magnetic field detected.

If the output value of the sine bit is "0", the two sensors have detected or detected a magnetic field of the same magnitude, and if the maximum value (for example, "255") indicates that the difference between the detected or detected magnetic fields is large. .

For example, when the value of the sine bit detected by the magnetic measuring terminal 1300 is close to the value of "0", the magnetic marker unit 1360 is located close, and when it is close to the value of "255", it may be represented as being far away. Naturally, these values can be converted into distance values.

That is, the location of the artificial facility installed in the ground by the magnetic field measurement device 1300 can be measured and the change of the underground terrain can be measured and the measured information can be recorded and managed.

The digital gradient meter 1320 depends on the crystal oscillator frequency but observes the maximum and minimum values of the geomagnetic field, automatically calibrating for 10 to 20 seconds from the time the switch is turned on.

Arrange the digital gradient meter 1320 in the north-south direction, but observe the end portion installed by tilting the inclination angle of the geomagnetic field.

Then, the sensitivity and zero offset for the first fluxgate sensor 1312 and the second fluxgate sensor 1313 are determined by turning on the switch and rotating the digital gradient meter 1320 at an angle of 180 ° for the adjustment time (about 10 seconds). The error resulting from the sensitivity difference can be corrected.

The most difficult part in maximizing the performance of the ground detector 1310 is to mechanically arrange the first fluxgate sensor 1312 and the second fluxgate sensor 1313.

The fixing of the first fluxgate sensor 1312 and the second fluxgate sensor 1313 is such that the first fluxgate sensor 1312 is exactly aligned with the axis of the second fluxgate sensor 1313.

It is preferable to fix the first fluxgate sensor 1312 first and fix the second fluxgate sensor 1313 with a fixing screw having a nonmagnetic property.

As described above, the axes of the first fluxgate sensor 1312 and the second fluxgate sensor 1313 are rotated while the corresponding fixing screw is rotated to maintain constant measurement values while continuously rotating the magnetic measuring terminal 1300. Try to match.

The magnetic marker portion 1360 includes a permanent magnet 1361, a coating portion 1362, and an RFID 1363.

The permanent magnet 1361 is a permanent magnetic material having a magnetic force of 10 to 100 gauss, and is disposed such that the upper or upper end thereof is an N pole and the lower or lower end thereof is an S pole. It is very natural that the Gaussian value of the permanent magnet 1361 may be larger.

The coating part 1362 is for waterproofing and moisture-proofing the outer surface of the permanent magnet 1361 and is coated with plastics or acrylic resins after nickel plating and urethane coating treatment.

The upper portion of the coating part 1362 may have a hemispherical shape, and an RFID 1363 may be embedded therein, and may be displayed to identify the N (N) polarity from the outside.

The lower portion of the coating part 1362 may form a curved structure or a screw fastening structure to facilitate installation in an artificial structure including underground transmission and distribution cables, underground manholes, and the like.

The mobile communication system 1400 transmits and receives a communication signal by wirelessly connecting the plurality of mobile communication terminals 1100 located in the formed service area by CDMA and sets and provides a communication path at the request of the mobile communication terminal 1100. .

The mobile communication system 1400 receives the RF ID information and the measured magnetic field information detected by the wirelessly connected mobile communication terminal 1100, and requests the management server 1600 or the GS system (at a request of the mobile communication terminal 1100). 1700 and the communication path are established and transmitted via the communication network 1500, and at the same time, the corresponding information output from the management server 1600 or the GS system 1700 is wirelessly transmitted to the mobile communication terminal 1100.

The communication network 1500 connects with the mobile communication network 1400, the management server 1600, and the GS system 1700, and establishes and provides a communication path according to the request signal. All communication networks such as wired communication network, wireless communication network, and the Internet are provided. This may be included.

The management server 1600 receives the RF ID information and the magnetic field information transmitted from the mobile communication terminal 1100 via the mobile communication system 1400 and records the received ID information or the RF ID information from the magnetic measurement terminal 1300. The magnetic field information can be directly input and recorded in the assigned area, and the recorded information can be analyzed or managed.

The Geographical Information System (GIS) is connected to the mobile communication terminal 1100 or the self-measuring terminal 1300 and searches for every setting report corresponding to the GPS location information of the current location according to the request signal. To provide.

Therefore, the configuration as described above has the advantage of using the location information and the detected magnetic field information of the GPS satellites 1200 to record and update management of the survey information and terrain changes of the artificial installations installed in the ground.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

1000: GPS-based Geodetic Surveying System
1100: mobile communication terminal 1110: wireless communication unit
1120: control unit 1130: GPS receiver
1140: memory 1150: audio processor
1160: display unit 1170: key input unit
1180: data input unit 1190: recording unit
1200: GPS satellite 1300: Magnetic measuring terminal
1310: underground detection unit 1311: RF ID sensor
1312: first fluxgate sensor
1313: second fluxgate sensor
1315: detector 1320: digital gradient meter
1321 input interface 1322 microprocessor
1323: output interface 1324: LCD display device
1325: digital to analog converter
1326: sensitivity control unit 1327: voltage controlled oscillator
1328: voice amplifier 1329: volume control
1330: speaker 1332: GPS receiver
1333: External system connection 1360: Magnetic marker
1361: permanent magnet 1362: covering
1363: RFID 2000: underground facilities

Claims (1)

A wireless communication unit for transmitting and receiving a radio signal, a control unit connected to the wireless communication unit and including a modem and a codec, a GPS receiver connected to the control unit and receiving GPS data of a GPS satellite, a memory connected to the control unit and storing location information; An audio processor for accessing the controller, outputting and inputting an audio signal, a display unit for accessing the controller, displaying information, operating as a touch screen, a key for accessing the controller, inputting numbers, letters, commands, and including a function key A mobile communication terminal including an input unit, a data input unit connected to the control unit and inputting data from the outside, and a photographing unit connected to the control unit and photographing to generate an image signal;
The control unit includes a transmission processor for encoding and modulating the transmitted radio signal; And a reception processor for demodulating and decoding the received radio signal. Further comprising a data processing unit consisting of,
The codec includes: a data codec for processing packet data; And an audio codec for processing audio signals. Made of
A GPS satellite wirelessly transmitting GPS data which can be analyzed as longitude, latitude, elevation, and time information to the mobile communication terminal;
An RF ID sensor connected to the mobile communication terminal and wirelessly detecting RF ID information from a magnetic marker installed in an underground facility, a first fluxgate sensor and a second fluxgate sensor installed on a same axis to measure the same magnetic field at different positions. The RFID information is input from the fluxgate sensor and the RFID sensor and output as digital data. The difference between the two signals is input from the first fluxgate sensor and the second fluxgate sensor, respectively. A digital gradient meter for generating a frequency signal corresponding to a value and converting the magnitude of the mixed frequency of the measured magnetic field waveform into digital data, and outputting the digital gradient meter; an input interface for matching and inputting a signal output from the digital gradient meter; God A microprocessor that receives and calculates a call and analyzes the detected magnetic field strength, and stores the analysis result and the RF ID information in a storage unit provided therein, and inputs the analysis result and RF ID information output by the microprocessor. An output interface for converting the character, number, and graphic into a corresponding character, number, and graphic; A GPS receiver which transmits the GPS information wirelessly received at the current position from the GPS satellite to the microprocessor by a corresponding control signal of the GPS satellite, and connected to an external system or the mobile communication terminal by a corresponding control signal of the microprocessor. External system connection unit which transmits data of the detected RFID and the measured magnetic field or is connected to an external GIS system to query and receive every setting at the current location, and transmits it to the microprocessor, which is output from the digital gradient meter. A digital analog converter which converts a digital data signal into an analog signal in the range of 0 to 2.5 volts (V) and outputs an audio signal having an intensity corresponding to the magnitude of a magnetic field detected by the first fluxgate sensor and the second fluxgate sensor, respectively. A sensitivity controller for adjusting the sensitivity of the input and output signals by adjusting the threshold voltage of the digital analog converter, and inputting an analog signal output by the digital analog converter in a range of 0 to 2.5 volts (V). To the corresponding audio signal An output voltage controlled oscillator, a voice amplifier for power amplifying an audio signal output by the voltage controlled oscillator, a volume controller for adjusting a volume level of the signal output by the voice amplifier, a speaker for outputting an audio signal output by the voice amplifier Magnetic measuring terminal comprising a;
The magnetic measuring terminal may include: a detector configured to install the first fluxgate sensor and the second fluxgate sensor in a state where the center axes thereof coincide with each other, fix the non-magnetic fixing screw, and configure the RFID sensor together; Including the underground detection unit,
The first fluxgate sensor and the second fluxgate sensor are operated by the same constant voltage of +5 V separated,
The RFID sensor is installed in the underground facilities a plurality of the ID number, the location, depth, type, installation date of each of the RFID ID information recorded,
The magnetic marker part is made of a permanent magnetic material having a magnetic force of 10 to 100 gauss, the upper part of which is arranged as a negative electrode (N), and a lower part as an S (S) electrode, and a nickel plated and urethane coated surface for waterproofing and moisture proofing. magnet; The permanent magnet is covered with plastics or acrylic resin, and the upper part is a hemispherical shape marked to check the N (N) polarity of the permanent magnet from the outside, and the lower part is a curved structure or screw fastening structure for easy installation in the underground facility. A coating unit for forming; And an RF ID embedded in an upper portion of the coating part. Lt; / RTI >
A mobile communication system wirelessly connected to the mobile communication terminal to receive the detected RF ID information and the measured magnetic field information;
A management server connected to the mobile communication system, inputting the RFID information and the magnetic field information, and connected to the magnetic measurement terminal to receive the RF ID information and the magnetic field information and record and record the input information in an allocated area; And
A GPS system connected to the mobile communication system and searching for and providing underground setting information corresponding to the GPS location information of the area where the self-measuring terminal is currently located according to the request signal; GPS-based geodetic surveying system for the mapping of underground facilities, characterized in that consisting of a configuration.

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