KR100990670B1 - Continuous location information service terminal, system and method thereof - Google Patents

Continuous location information service terminal, system and method thereof Download PDF

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Publication number
KR100990670B1
KR100990670B1 KR1020100029813A KR20100029813A KR100990670B1 KR 100990670 B1 KR100990670 B1 KR 100990670B1 KR 1020100029813 A KR1020100029813 A KR 1020100029813A KR 20100029813 A KR20100029813 A KR 20100029813A KR 100990670 B1 KR100990670 B1 KR 100990670B1
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South Korea
Prior art keywords
terminal
magnetic field
information
unit
location information
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KR1020100029813A
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Korean (ko)
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김유성
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(주)큐비랩
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/26—Acquisition or tracking or demodulation of signals transmitted by the system involving a sensor measurement for aiding acquisition or tracking
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Navigation (AREA)

Abstract

PURPOSE: A continuous location information service terminal, a system and method thereof are provided to detect the position of a dead zone. CONSTITUTION: A GPS antenna(100) receives a GPS signal from a plurality of GPS satellites. A GPS repeater(200) receivers the GPS signal and retransmits it to indoor. A plurality of magnetic field generators(400,500) are installed in a specific space and generates magnetic field by predetermined time difference. A location information supply terminal(300) includes a GPS sensor, an acceleration sensor, and a geomagnetic sensor. The location information supply terminal receives the GPS signal from the GPS repeater and calculates the attitude information of an acceleration sensor and the geomagnetic sensor to calculate relative position in the specific space.

Description

CONTINUOUS LOCATION INFORMATION SERVICE TERMINAL, SYSTEM AND METHOD THEREOF}

The present invention relates to a terminal, a system, and a method for continuously providing location information, and in particular, to construct a location information system using a GPS repeater and a magnetic field generator to identify a location in a shaded area such as an indoor, underground, tunnel, etc., where GPS signal reception is difficult. In addition, by using a GPS receiver, an acceleration sensor, and a geomagnetic sensor, which are mostly embedded in the mobile terminal, the mobile terminal can determine the current position in the location information system, and the continuous location information providing terminal configured to enable various applications using the same; A system and method thereof are provided.

In general, the Global Positioning System (GPS) may measure accurate time and distance from three or more satellites and calculate three different distances according to a triangulation method. In particular, the conventional GPS has been used to provide location information or route information of a vehicle by being used for navigation and the like.

However, since GPS has a large error, it is difficult for a user to obtain accurate location information in a small space within an error range, and particularly, a reception shadow area in which there are many spaces where satellite signals are not received due to an obstacle or a shield. It is difficult to obtain user location information using GPS in places such as underground shopping malls, tunnels, and indoors. In addition, it is not possible to obtain three-dimensional position information in a space such as the division of the first and second floors of the building.

1 is an example of an existing system for providing a location information service even in a shaded area where GPS reception is not possible. The location information system includes a GPS satellite (1) for transmitting distance information from a GPS satellite to a receiver and the GPS satellite ( 1) GPS reference antenna (2) for receiving distance information transmitted from, the GPS antenna transmitted from the GPS satellite (1) through the reference antenna (2) received and distributed to three or more and three or more installed in the room GPS switching repeater (3) to switch the transmission antennas in a certain order so that only one antenna transmits a GPS signal for a specific time, and is connected to the GPS switching repeater (3) and installed in an indoor wall or ceiling to transmit GPS signals. GPS transmission antenna (4), the signal transmitted from the GPS switching repeater (3) through the transmission antenna 4 to measure the transmission antenna before and after switching Positioning server for estimating the position of the indoor GPS receiver by applying the indoor GPS receiver 5 and the GPS measured antenna 4 and the values measured by the indoor GPS receiver 5 to a positioning algorithm. 6) consists of.

However, such a conventional location information system requires a plurality of virtual satellites used exclusively for measuring the location of the terminal indoors, so the installation cost for this is increased, and the installation process is quite difficult, and each virtual location Since the gender signal must be separated and reconstructed into a new signal, the computation is complicated and the error is large, making it difficult to apply realistically. In addition, the lack of compatibility with the external location information service, the configuration cost of the terminal for interlocking the indoor and outdoor information also increased. On the other hand, in the above configuration, there was also a method in which the virtual satellite 4 provided its own signal to allow indoor GPS location measurement by ignoring the relationship with the external GPS satellite 1, but it was necessary to install and manage a plurality of virtual satellites. In addition, since it is not linked to the external GPS environment, it is impossible to use it universally.

In addition to the above system, as a means for maintaining service compatibility by interworking indoor and outdoor location information, there is also a method of serving location information in a shadow area using a base station of a mobile communication company. However, in the case of providing the information on the current location using the base station as described above, the method for implementing the location information service is relatively simple and does not require the installation process, but the radius around the base station dozens ~ hundreds meters The resolution of the current location is reduced, such as an error occurs, and an expensive separate communication terminal was required for such a service.

Accordingly, the demand for a location information providing system and a terminal which can be used for various purposes by providing more accurate high resolution location information while maintaining compatibility of outdoor and indoor when providing location information and configuring at low cost is increasing.

An object of the embodiments of the present invention to improve the above-mentioned problems is to configure the location information system using a GPS repeater and a magnetic field generator to determine the location in the shaded areas such as indoors, underground, tunnels, etc., where GPS signals are difficult to receive, as well as outdoors. It is to provide a continuous location information providing terminal, system and method for continuously providing location information indoors.

Another object of the embodiments of the present invention for improving the above-mentioned problems is to continuously configure the indoor position measurement module by using a GPS receiver, an acceleration sensor, and a geomagnetic sensor, which are mostly embedded in a mobile terminal, to be easily applied to the current device. It is to provide a providing terminal, a system and a method thereof.

Another object of the embodiments of the present invention for improving the above-mentioned problem is to calculate the position of the current terminal by matching the latitude and longitude value in the building location measured using the magnetic field generator and the building location measured using the GPS repeater Accordingly, the present invention provides a terminal, a system, and a method for providing continuous location information for providing a terminal location in a detailed indoor space as well as a planar location with respect to a terminal in a building.

Another object of the embodiments of the present invention for improving the above-mentioned problem is to store detailed guide information corresponding to the location of the space and the direction of the terminal measured by the terminal by the detailed guide information according to the space and the direction in which the terminal is located indoors To provide a continuous location information providing terminal, a system and a method to provide.

In order to achieve the above object, a continuous position information providing system according to an embodiment of the present invention is a GPS repeater for receiving a GPS signal from the outside and retransmitting the room, a first magnetic field generator for generating a first magnetic field in the indoor space, A second magnetic field generator for generating a second magnetic field in an indoor space, a GPS unit for receiving the GPS signal of the GPS repeater and identifying the indoor area information, and a geomagnetic sensor unit for measuring magnetic fields generated from the first and second magnetic field generators And a location information providing terminal including a measurement unit configured to determine a relative position of the terminal in the room by using an earth magnetic field and directions of the measured first and second magnetic fields.

The measurement unit of the location information providing terminal calculates directions of the first magnetic field and the second magnetic field by measuring angle information between the first magnetic field, the second magnetic field, and the terminal based on the direction of the earth magnetic field. do.

The location information providing terminal further includes an acceleration sensor unit for measuring the vertical attitude of the terminal, after obtaining three-dimensional attitude information of the terminal using the earth magnetic field measured by the acceleration sensor unit and the geomagnetic sensor unit, the attitude information A correction unit for correcting the angle information with the first and second magnetic field generator based on the.

The location information providing terminal further includes a corresponding information unit that pre-stores a spatial position value of the room corresponding to the angle information of the terminal corrected by the correction unit and corresponds to a current position of the terminal as the position value.

The location information providing terminal further includes a guide information providing unit providing guide information corresponding to a location value of the corresponding information unit according to the direction indicated by the terminal and the current location.

The location information providing terminal is provided with a built-in or provided with a corresponding information value for matching the spatial position and the angle information measured by the terminal and a space identification value for identifying the indoor area by the measured value of the GPS unit.

The location information providing terminal further includes guide information corresponding to the corresponding information value or the spatial identification value, and the guide information includes one or more of map information, sound, voice, image, and text.

The first magnetic field generator and the second magnetic field generator generate magnetic fields so as to be continuous with each other according to a predetermined period, and the non-generated sections between the generated magnetic fields are longer than the respective magnetic field generating sections.

In addition, the continuous location information providing terminal according to an embodiment of the present invention to achieve the above object is a GPS unit for receiving the GPS signal to identify the indoor area information, the first installed in the outside to generate a magnetic field in the indoor space The geomagnetic sensor unit for measuring the first and second magnetic fields generated from the magnetic field generator and the second magnetic field generator, the acceleration sensor unit for measuring the vertical attitude of the terminal, and the first and second magnetic fields based on the earth magnetic field direction. After obtaining the three-dimensional attitude information of the terminal by using the measurement unit for measuring each angle formed by the terminal, the earth magnetic field measured by the acceleration sensor unit and the geomagnetic sensor unit, the first and the first based on the attitude information A correction unit for correcting angle information of the magnetic field generator and the indoor unit corresponding to the angle information of the terminal corrected by the correction unit; A pre-stored space position value, and provides a corresponding information unit for mapping a current position of the terminal to the position value, and providing guide information corresponding to a relative position coordinate value of the corresponding information unit according to the direction indicated by the terminal and the current position. It includes an information provider.

In addition, in order to achieve the above object in the continuous location information providing method according to an embodiment of the present invention, the location information providing terminal receives the GPS signal of the GPS repeater to identify the indoor area information, the location information providing terminal is external Measuring a first magnetic field and a second magnetic field generated from the first magnetic field generator and the second magnetic field generator, wherein the location information providing terminal uses the earth magnetic field and the directions of the measured first magnetic field and the second magnetic field; Determining the relative position of the indoor terminal.

The determining of the relative position may include: measuring, by the location information providing terminal, each angle between the first and second magnetic fields and the terminal based on the direction of the earth magnetic field; Pre-storing a spatial position value of the room corresponding to the angle information, and mapping the current position of the terminal to the position value, and providing guide information corresponding to the position value according to the direction and current position indicated by the terminal. It further comprises the step.

In addition, the providing of the guide information may include obtaining, by the location information providing terminal, three-dimensional posture information of the terminal by measuring a horizontal posture and a vertical posture of the terminal, and the position information providing terminal by using the posture information. Compensating the step, the step of matching the corrected angle information of the terminal with the position value.

Continuous location information providing terminal, system and method according to the embodiments of the present invention by configuring a location information system using a GPS repeater and a magnetic field generator to determine the location in the shadow area, such as indoors, underground, tunnels, which is difficult to receive GPS signals By providing the location information continuously in the indoor as well as outdoor, there is an effect of providing the location information seamlessly even during indoor and outdoor movement.

Continuous location information providing terminal, system and method according to embodiments of the present invention by using a GPS receiver, an acceleration sensor, a geomagnetic sensor that is mostly embedded in the current mobile terminal to configure the indoor position measurement module to easily apply to the current device Increasing utilization and reducing terminal cost.

According to an embodiment of the present invention, a terminal, a system, and a method for providing continuous location information correspond to a location value of a building measured using a GPS repeater and a latitude and longitude value within a building location measured using a magnetic field generator. By calculating, not only the planar position of the terminal in the building but also the terminal position in the detailed indoor space is provided, thereby providing more detailed information about the user's position in the room.

According to an embodiment of the present invention, a terminal, a system, and a method for continuously providing location information store detailed guide information corresponding to a spatial position measured by the terminal and a direction of the terminal, thereby providing detailed guidance according to a space in which the terminal is located indoors and a pointing direction. By providing information, there is an effect that can be utilized in information providing systems such as tour guide information.

1 is a block diagram of a conventional indoor location information providing system.
2 is a block diagram of an indoor location information providing system using a GPS repeater.
3 is a block diagram of a system for providing continuous location information according to an embodiment of the present invention.
4 is a position measurement example of a continuous location information providing terminal according to the present invention.
5 is an example of magnetic measurement of a terminal for providing continuous location information according to the present invention.
6 is an example of a posture measurement of a terminal for providing continuous location information according to the present invention.
7 is a configuration diagram of a terminal for providing continuous location information according to an embodiment of the present invention.
8 is another example of a terminal for providing continuous location information according to the present invention.
9 is a flowchart of a method of providing continuous position information according to the present invention.
10 is a flow chart of a positioning step according to the invention.

The present invention as described above will be described in detail with reference to the accompanying drawings and embodiments.

2 is a configuration diagram of a system for providing indoor location information using a GPS repeater. The indoor location information providing system includes a GPS antenna 100 and a GPS antenna 100 that receive GPS signals transmitted from a plurality of GPS satellites 8. GPS repeater 200 for receiving the GPS signal transmitted from the GPS satellite 8 and retransmitting it to the interior, and a location information providing terminal 300 for receiving the GPS signal from the GPS repeater 200. .

The location information providing terminal 300 can receive a GPS signal through the GPS repeater 200 even in a room where GPS reception is not performed using the indoor location information providing system. Is possible.

However, due to the nature of the GPS signal due to the difference between the actual receiving position and the indoor providing position, a significant difference occurs between the measured area and the actual area, it cannot be used as it is.

3 is a configuration diagram of a system for providing continuous location information according to an embodiment of the present invention, wherein the system for providing continuous location information includes a GPS antenna 100 and a GPS antenna for receiving GPS signals transmitted from a plurality of GPS satellites. GPS repeater 200 for receiving the GPS signals transmitted from the GPS satellites and transmitting them back to the interior through a plurality of GPS satellites; a plurality of magnetic field generators 400 and 500 installed in a specific space and generating magnetic fields with a predetermined time difference, and GPS sensors Receiving a GPS signal from the GPS repeater 200, including an acceleration sensor, a geomagnetic sensor, calculates their attitude information with the acceleration sensor and the geomagnetic sensor, and the magnetic fields and the earth generated from the plurality of magnetic field generators 400 and 500 It includes a location information providing terminal 300 for measuring the magnetic field to calculate its relative position in a specific space.

The location information providing terminal 300 receives a GPS signal outdoors and recognizes the current location, and when the GPS repeater 200 enters an indoor location, the GPS repeater 200 receives a GPS signal received from the outside and retransmitted. To find out the location of the current space. The location information grasped at this time is recognized as a rough area of the range of several to several tens of meters or the approximate range of buildings due to the characteristics of the GPS signal.

For example, if the space shown in FIG. 3 is recognized as a specific building by the GPS signal and it is determined that the building can provide indoor location information from the corresponding terminal, the terminal 300 uses the geomagnetic sensor attached therein. By using the magnetic field of the earth and the plurality of magnetic field generators 400 and 500 installed in the building to measure the angle of the magnetic field generated by a predetermined time difference to determine its relative position in the space within the building. At this time, as described in Figure 2, only the GPS signal received indoors can not determine the exact position because of the error caused by the difference between the actual receiving position and the indoor providing position due to the characteristics of the GPS signal, by measuring the angle of the magnetic field to precise The current location can be identified. In addition, since the angle of the magnetic field measured by the magnetic field sensor in the terminal 300 can be determined differently according to which angle the terminal 300 is located in the three-dimensional space, the space of the terminal 300 is more accurate. In order to determine the relative position, the terminal 300 corrects the angle of the magnetic field using its own posture information. That is, the acceleration sensor of the terminal 300 can measure the vertical attitude of the terminal, the geomagnetic sensor can calculate the horizontal attitude of the terminal 300 by measuring the direction of the earth magnetic field, the terminal 300 ) Can determine its own terminal posture information using the measured vertical posture and horizontal posture information, and can determine its exact relative position by correcting the angles of the measured magnetic fields using the measured posture information. Such a detailed description of the attitude information grasp and relative position measurement of the terminal will be described with reference to FIG. 4.

The location information providing terminal 300 may obtain the schematic area information such as the building by using the GPS signal received by the GPS repeater 200, and determine the relative position in the schematic area by the angle information of the magnetic field. . In addition, by storing the relative position information and the guide information therein, it is possible to use the guide information according to the current position during the movement in the building. In this case, the corresponding information or the guide information corresponding to the relative position information to the guide information may be previously stored in the terminal or may be received and used in real time from the outside.

As described above, the GPS receiver 200 and the location information system using the magnetic field generator are configured so that the location can be detected even in a shadow area such as indoor, underground, tunnel, etc., where the continuous location information providing terminal 300 is outdoors. Of course, it is possible to continuously provide location information even indoors, it is possible to provide location information seamlessly during indoor and outdoor movement.

4 is a position measurement example of a continuous location information providing terminal according to the present invention, it shows that the position information of the terminal is calculated using the angle of the plurality of magnetic fields measured in a predetermined space.

The location information providing terminal 300 measures the magnetic fields from the plurality of magnetic field generators 400 and 500 by using an internal geomagnetic sensor. At this time, to distinguish the first magnetic field from the first magnetic field generator 400 and the second magnetic field from the second magnetic field generator 500, as shown in FIG. The non-generated sections between the generated magnetic fields are set longer than the respective magnetic field generating sections.

The measured value of the first magnetic field and the measured value of the second magnetic field measured by the terminal 300 are calculated in the form of angle information 42 and 43 of the corresponding magnetic field and the terminal. At this time, the attitude information 41 of the terminal including the vertical angle and the horizontal angle of the current state of the terminal is required for accurate calculation of the angle information 42 and 43. That is, the correct angle is calculated by correcting the measured values of the first magnetic field and the second magnetic field using the posture information 41 of the terminal. At this time, the spatial attitude information of the terminal is calculated using the acceleration sensor and the geomagnetic sensor built in the terminal 300, which will be described again with reference to FIG. 6.

As such, by calculating accurate angle information with the magnetic field through the correction and connecting it with the plane 41 where the terminal 300 is located, the relative position of the terminal in the current space can be measured. Since the coordinate values at which two straight lines and one plane constituting a specific angle in a three-dimensional space are unique, a position represented by two specific angles formed by using the terminal 300 and the plurality of magnetic fields 400 and 500 as a reference point is It is unique in space, and the relative position of the terminal 300 can be grasped. In addition, since the building information can be grasped by the GPS repeater, various spaces can be distinguished in correspondence with the relative position in the building. That is, it is possible to distinguish the exact current position by a specific latitude and longitude (or three-dimensional coordinates) value stored in the building corresponding to the angle information calculated in this way, and guide information providing service for displaying guide information and the like corresponding to the latitude and longitude value. Becomes possible. This may require a database in the terminal 300.

As such, the location of the terminal 300 is calculated by matching the latitude and longitude value within the building location measured using the magnetic field generators 400 and 500 to calculate the location of the current terminal 300. By providing not only the plane position with respect to the terminal position in the detailed indoor space can provide more detailed information about the location of the user in the room. In particular, it can be used for navigation to determine the location according to the movement of the vehicle while driving in the tunnel, as well as guide information services used indoors such as museums or galleries.

5 is a graph illustrating a magnetic field measured by a geomagnetic sensor of the terminal as an example of magnetic measurement of a terminal for providing continuous location information according to the present invention.

The geomagnetic sensor of the terminal calculates the horizontal posture of the terminal by measuring a small amount of the earth magnetic field 51 continuously flowing, and calculates the respective magnetic field directions by measuring the plurality of magnetic fields 52 and 53 generated by a certain time difference. do. Magnetic fields can penetrate obstructions such as walls or humans, and can be used without any influence on location information even in shaded areas such as indoors where GPS reception is impossible. In addition, the relative position obtained by using the magnetic field is much higher resolution than the position information obtained by using the GPS, and the resolution can be easily adjusted according to the area of the entire area to be distinguished. It is available.

6 illustrates an example of measuring attitude information of a terminal for providing continuous location information according to the present invention, and comparing attitude information of a terminal with respect to an earth magnetic field direction.

The terminal 300 needs to grasp the attitude information of the terminal, that is, the vertical posture 62 and the horizontal posture 41 of the terminal, in order to measure the exact relative position in the space. The vertical orientation 62 is measured using the acceleration sensor 320 of the terminal 300, and the horizontal orientation 41 is the earth magnetic field 61 measured by the geomagnetic sensor 310 of the terminal 300. Calculate using the direction of. The terminal information including the vertical posture 62 and the horizontal posture 41, that is, the three-dimensional attitude information of the terminal composed of the three axial directions 41, 61, and 62 of the space, is calculated, and then used to calculate the three-dimensional attitude information. By calculating the measurement angle of the magnetic field from the generator to calculate the position information of the terminal in more detail.

In addition, the position information of the space measured by the terminal and the detailed guide information corresponding to the direction of the terminal is stored using the posture information of the terminal, and the detailed guide information corresponding to the space in which the terminal is located and the direction indicated by the terminal is stored. It can be used for information provision system such as tour guide information. In this case, in order to save the storage capacity of the terminal, the tour guide information providing system may be operated in a manner that is downloaded whenever necessary from the server storing the guide information.

7 is a configuration diagram of a terminal for providing continuous location information according to an embodiment of the present invention. The continuous location information providing terminal 300 receives a GPS signal and identifies a GPS unit 305 for identifying indoor area information. The geomagnetic sensor unit 310 to measure, the acceleration sensor unit 320 to measure the vertical state of the terminal, the posture measuring unit 330 to measure the attitude information of the terminal, the external magnetic field generator and the second magnetic field generator A position measuring unit 340 for calculating position information of a predetermined region using the first magnetic field and the second magnetic field as an angle value of the magnetic field, and a correcting unit for correcting using the posture information when calculating the angle value ( 345), the building information unit 360 storing the building information corresponding to the GPS signal, the corresponding information unit 365 storing the position value corresponding to the specific angle value in the building, and the guide information corresponding to the position value. Offering The guide information providing unit 370, an input unit 380 for receiving a user input, a display unit 390 for outputting location information and guide information, and a controller 350 for controlling each unit.

The geomagnetic sensor unit 310 measures the magnetic field of the earth magnetic field and the magnetic field generator installed in the building by using the geomagnetic sensor, and measures the horizontal state of the terminal using the earth magnetic field.

The acceleration sensor unit 320 measures an exercise state of the terminal using an acceleration sensor, and measures the vertical state of the attitude information of the terminal.

The position measuring unit 340 calculates directions of the first magnetic field and the second magnetic field by measuring angle information between the first magnetic field, the second magnetic field, and the terminal based on the direction of the earth magnetic field. Thereafter, the relative position of the terminal in the room is determined using the directions of the earth magnetic field and the measured first magnetic field and the second magnetic field. In this case, the posture measuring unit 330 obtains the stereoscopic posture information of the terminal using the earth magnetic field measured by the acceleration sensor unit 320 and the geomagnetic sensor unit 310, and then the correction unit 345 receives the three-dimensional posture information. The angle information of the first and second magnetic field generators is corrected based on the attitude information.

The building information unit 360 stores building information having a resolution level that can be distinguished by a GPS signal. In addition, identification information is added to the corresponding building information to easily distinguish a building equipped with an indoor location information providing system, and the continuous location information providing terminal 300 easily uses the identification information when entering the building. The location information providing function may be configured to operate.

The correspondence information unit 365 prestores the spatial position value of the room corresponding to the angle information of the terminal corrected by the correction unit 345, and maps the current position of the terminal to the position value. Allows you to identify the current location of the. At this time, a corresponding information value for matching the current position and the angle information measured by the terminal and a space identification value for identifying the indoor area are provided or provided with the measured value of the GPS unit 305.

The guide information providing unit 370 includes guide information corresponding to the corresponding information value or the space identification value, and the guide information includes one or more of map information, sound, voice, image, and text. That is, the guide information providing unit 370 provides map information or guide information corresponding to the position value of the corresponding information unit according to the direction indicated by the terminal and the current position. By using this function, it can be utilized when providing a tour guide service in a specific indoor space, and by using a measuring method using a magnetic field, precise location identification is possible, thereby providing more detailed indoor information service.

8 is a view illustrating another example of a location information providing terminal attached to a general navigation device as another example of a continuous location information providing terminal according to the present invention.

For example, when the navigation device 80 includes only the GPS receiver 86 and does not include the acceleration sensor 82 or the geomagnetic sensor 83, the location information providing terminal 81 may be an acceleration sensor 82. And a control unit 84 having a geomagnetic sensor 83 therein and calculating new position information using the GPS signal received from the GPS receiver 86 and the attitude information and the angle information of the terminal 81. can do.

In addition, the control unit (b) between the GPS correspondence unit 85 and the GPS receiver 86, which has previously received a GPS signal directly from the GPS receiver 86 and displays map information corresponding to the location information corresponding to the GPS signal, 84) constitute via. That is, the controller 84 transmits the new location information calculated by including the attitude information and the angle information of the terminal 81 instead of the location information of the existing GPS signal to the map correspondence unit 85 and the map correspondence unit ( 85 may be configured to display the map information corresponding thereto to use the general navigation 80 as a continuous navigation. In this case, the map information according to the new location information may be configured to be updated so as to have no problem in use by updating 87.

As described above, in constructing the continuous location information providing terminal according to the present invention, the modularized location information providing terminal configured to use the functions of the existing navigation or smartphone to the maximum and does not exist in the corresponding terminal is additionally installed in the existing terminal. By using the existing outdoor dedicated location information providing terminal can be utilized as a continuous location information providing terminal.

In addition, most navigation devices and the latest smartphones have built-in GPS receivers, acceleration sensors, and geomagnetic sensors, so that indoor location measurement modules can be used to easily apply to current devices to increase device utilization and reduce terminal cost. Can be.

9 is a flowchart of a method for providing continuous location information according to the present invention. In the method for providing continuous location information, a GPS receiver receives a GPS signal of a GPS repeater and identifies indoor area information (S91). The first magnetic field and the second magnetic field generated from the first external magnetic field generator and the second magnetic field generator are measured, and relative to the terminal of the room using the earth magnetic field and the directions of the measured first magnetic field and the second magnetic field. Determining the position (S92), and providing a guide information corresponding to the relative position (S93).

The guide information provided in the guide information providing step S93 may include map information or voice, text, guide, image, and sound information about the current location calculated in a predetermined space area.

10 is a flow chart of the position measurement step according to the present invention, wherein the position measurement step is a step of obtaining the three-dimensional attitude information of the terminal by measuring the horizontal attitude and the vertical attitude of the location information providing terminal (S101, S102) And measuring, by the location information providing terminal, each angle between the first and second magnetic fields based on the direction of the earth magnetic field (S103), and storing the current location of the terminal by the location information providing terminal. And (S104) corresponding to the spatial position value of the room corresponding to the angle information of the terminal.

The step (S104) of responding to the spatial position value of the room may include correcting the angle information by the position information providing terminal by using the posture information, and mapping the angle information of the corrected terminal to the position value. It may further include.

In the above described and illustrated with respect to preferred embodiments according to the present invention. However, the present invention is not limited to the above-described embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention attached to the claims. .

100: GPS antenna 200: GPS repeater
300: location information providing terminal 305: GPS unit
310: geomagnetic sensor unit 320: acceleration sensor unit
400,500: magnetic field generator

Claims (13)

A GPS repeater which receives a GPS signal from the outside and retransmits it to an interior;
A first magnetic field generator for generating a first magnetic field in the indoor space;
A second magnetic field generator for generating a second magnetic field in the indoor space; And
A GPS unit for receiving the GPS signal of the GPS repeater and identifying the indoor area information;
A geomagnetic sensor unit for measuring magnetic fields generated from the first and second magnetic field generators;
And a location information providing terminal including a measurement unit for grasping the relative position of the terminal in the room by using an earth magnetic field and directions of the measured first and second magnetic fields.
The method of claim 1, wherein the measuring unit
Providing continuous position information, the direction of the first magnetic field and the second magnetic field is calculated by measuring angle information between the first magnetic field, the second magnetic field, and the terminal based on the direction of the earth magnetic field. system.
According to claim 2, wherein the location information providing terminal
Further comprising an acceleration sensor unit for measuring the vertical attitude of the terminal,
After obtaining three-dimensional attitude information of the terminal by using the earth magnetic field measured by the acceleration sensor unit and the geomagnetic sensor unit, a correction unit for correcting the angle information with the first and second magnetic field generators based on the attitude information Continuous location information providing system comprising a.
According to claim 3, wherein the location information providing terminal
The apparatus further includes a corresponding information unit which pre-stores a spatial position value of the room corresponding to the angle information of the terminal corrected by the corrector, and maps the current position of the terminal to the position value. system.
The method of claim 4, wherein the location information providing terminal
And a guide information providing unit for providing guide information corresponding to the position value of the corresponding information unit according to the direction indicated by the terminal and the current position.
The method of claim 5, wherein the location information providing terminal
And a corresponding information value for matching the spatial position and the angle information measured by the terminal and a space identification value for identifying the indoor area using the measured value of the GPS unit.
The method of claim 6, wherein the location information providing terminal
And guide information corresponding to the corresponding information value or the spatial identification value, wherein the guide information includes one or more of map information, sound, voice, image, and text.
The method of claim 1,
And the first magnetic field generator and the second magnetic field generator generate magnetic fields so as to be continuous with each other according to a predetermined period, and the non-generated sections between the generated magnetic fields are longer than the respective magnetic field generating sections.
A GPS unit which receives a GPS signal and identifies indoor area information;
A geomagnetic sensor unit installed outside to measure first and second magnetic fields generated from a first magnetic field generator and a second magnetic field generator to generate a magnetic field in the indoor space;
An acceleration sensor unit measuring a vertical posture of the terminal;
A measurement unit configured to measure respective angles formed between the first and second magnetic fields and the terminal with respect to the direction of the earth magnetic field;
A correction unit for obtaining stereoscopic attitude information of the terminal using the earth magnetic field measured by the acceleration sensor unit and the geomagnetic sensor unit, and correcting angle information with the first and second magnetic field generators based on the attitude information;
A corresponding information unit which pre-stores a spatial position value of the room corresponding to the angle information of the terminal corrected by the correction unit, and maps the current position of the terminal to the position value;
And a guide information providing unit for providing guide information corresponding to a relative position coordinate value of the corresponding information unit according to the direction indicated by the terminal and the current position.
Continuous location information provided indoors by mounting on a terminal including a GPS unit receiving a GPS signal to identify area information of a predetermined area and a map correspondence unit providing map information corresponding to the location information corresponding to the GPS signal. In the providing terminal,
A geomagnetic sensor unit installed outside to measure first and second magnetic fields generated from a first magnetic field generator and a second magnetic field generator to generate a magnetic field in the indoor space;
An acceleration sensor unit measuring a vertical posture of the terminal;
A measurement unit configured to measure respective angles formed between the first and second magnetic fields and the terminal with respect to the direction of the earth magnetic field;
A correction unit for obtaining stereoscopic attitude information of the terminal using the earth magnetic field measured by the acceleration sensor unit and the geomagnetic sensor unit, and correcting angle information with the first and second magnetic field generators based on the attitude information;
It includes a corresponding information unit for storing the room position value of the room corresponding to the angle information of the terminal corrected by the correction unit in advance, the current position of the terminal corresponding to the position value,
And the map correspondence unit provides map information corresponding to the position value of the corresponding information unit instead of the map information corresponding to the position information corresponding to the GPS signal.
In the continuous location information providing method using a continuous location information providing system,
a) receiving, by the location information providing terminal, the GPS signal of the GPS repeater and identifying indoor area information;
b) measuring, by the location information providing terminal, a first magnetic field and a second magnetic field generated from an external first magnetic field generator and a second magnetic field generator;
and c) determining, by the location information providing terminal, a relative position of the indoor terminal using directions of the earth magnetic field and the measured first magnetic field and the second magnetic field.
The method of claim 11, wherein step c)
d) measuring, by the location information providing terminal, each angle between the first and second magnetic fields and the terminal based on the direction of the earth magnetic field;
e) storing, by the location information providing terminal, a spatial position value of the indoor space corresponding to the angle information of the terminal, and matching a current position of the terminal with the position value;
f) providing guide information corresponding to the position value according to the direction indicated by the terminal and the current position.
The method of claim 12, wherein step e)
g) obtaining, by the location information providing terminal, three-dimensional attitude information of the terminal by measuring a horizontal attitude and a vertical attitude of the terminal;
h) correcting the angle information by the position information providing terminal using the posture information;
i) matching the corrected angle information of the terminal to the position value.
KR1020100029813A 2010-04-01 2010-04-01 Continuous location information service terminal, system and method thereof KR100990670B1 (en)

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