WO2014142478A1 - 음파를 이용한 위치 정보 제공 시스템 - Google Patents
음파를 이용한 위치 정보 제공 시스템 Download PDFInfo
- Publication number
- WO2014142478A1 WO2014142478A1 PCT/KR2014/001905 KR2014001905W WO2014142478A1 WO 2014142478 A1 WO2014142478 A1 WO 2014142478A1 KR 2014001905 W KR2014001905 W KR 2014001905W WO 2014142478 A1 WO2014142478 A1 WO 2014142478A1
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- WIPO (PCT)
- Prior art keywords
- terminal
- node
- location
- portable
- sound waves
- Prior art date
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Classifications
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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
- 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
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/20—Position of source determined by a plurality of spaced direction-finders
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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
- 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
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/30—Determining absolute distances from a plurality of spaced points of known location
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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
- 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
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
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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
- 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
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/26—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements
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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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
Definitions
- the present invention relates to a system for providing location information using sound waves, and more particularly, it is possible to notify a user's current location in real time using sound waves having a relatively slow propagation speed in various indoors such as department stores, shopping malls, museums, and art galleries.
- the present invention relates to a location information providing system using sound waves.
- a positioning technology for providing a location based service can be largely classified into a network-based method using RF radio environment information, which is base station cell information of a mobile communication network, and a GPS positioning method using a GPS receiver.
- various publications including Korean Patent Publication No. 2005-95401, propose an apparatus capable of determining a three-dimensional space location using a sound wave propagation time.
- GPS signals are not captured in various indoors such as department stores, shopping malls, museums, and art galleries, so that the development and provision of services such as providing information on facilities or objects using location information, convenience of movement, pathfinding, and facilities search, etc. Was not easy.
- the present invention has been proposed to solve the problems described above, by using a sound wave that can inform the user's current location in real time by using a relatively slow propagation speed of various indoors, such as department stores, shopping malls, museums, galleries, etc. To provide a location information providing system.
- the present invention provides a user's current location through a portable location terminal, and at the same time provides a map that represents the structure of the room, as well as additional information on facilities or contents corresponding to each location of the map.
- An object of the present invention is to provide a location information providing system using sound waves that can provide an application service.
- the system for providing location information using sound waves is fixedly installed at a specific location in the room, and emits sound waves in an inaudible frequency band including its own number, absolute position information, and signal generation time, respectively.
- a plurality of node signal generators And receiving sound waves emitted from the plurality of node signal generators, calculating a distance from the node signal generator using a difference between the signal generation time and the reception time, and combining the calculated distance and absolute position information.
- a portable location terminal for calculating its current location and displaying the calculated current location on a display.
- the node signal generator receives a sound wave including the unique number and the signal generation time of the portable location terminal from the portable location terminal, and transmits the sound wave emitted from the portable location terminal to the management server,
- the management server calculates a current position of the portable location terminal using a unique number of the portable location terminal, a signal generation time, and a time when a sound wave is received by the node signal generator.
- the portable location terminal includes a terminal microphone for receiving sound waves emitted from the node signal generator; A distance calculator for calculating a distance to the node signal generator using a difference between a signal generation time and a reception time of the sound wave received through the terminal microphone is combined with the calculated distance and absolute position information to determine its current position.
- a terminal position calculating unit comprising a position calculating unit for calculating; A terminal timer configured to provide a current time of receiving the sound wave to a distance calculator of the terminal position calculator; A terminal memory for recording a map representing the structure of the room; And a display unit for mapping and displaying current location information of the portable location terminal provided by the terminal location calculator on a map provided from the terminal memory.
- the mobile terminal may further include a management server configured to receive and record current location information of the portable location terminal from the node signal generator or the portable location terminal.
- the management server preferably provides a map indicating the structure of the room to the portable location terminal.
- the management server provides the portable location terminal with a description of the facilities of each zone represented on the map or a description of each content represented on the map together with the map. Preferably, the description and the current location are displayed.
- the location information providing system using sound waves of the present invention informs the user's current location in real time using sound waves having a relatively slow propagation speed in various indoors such as department stores, shopping malls, museums, and art galleries.
- FIG. 1 illustrates a map provided in a system for providing location information using sound waves according to the present invention.
- FIG. 2 is a view showing a position calculation method of the position information providing system using sound waves according to the present invention.
- FIG. 5 is a block diagram showing a portable location terminal of the system for providing location information using sound waves according to the present invention.
- FIG. 6 is a configuration diagram illustrating a management server of a system for providing location information using sound waves according to the present invention.
- the term 'indoor' described below refers to various places including department stores, shopping malls, museums, art galleries, and movie theaters.
- the portable location terminal 20 includes a location terminal specially manufactured for the application of the present invention and provided in a rental form, and a portable communication terminal such as a smart phone or a tablet PC owned by the user.
- the present invention is applied by installing a separate application, and since the microphone and the speaker mounted thereon may be utilized as it is, the sound wave signal may be recognized in a general portable communication terminal.
- the node signal generator 10 emits sound waves in an inaudible frequency band
- the portable location terminal 20 uses the time t taken to receive the emitted sound waves and the speed v of the sound waves.
- the current position of the portable position terminal 20 is calculated and provided based on the absolute position information of each node signal generator 10 and the distance s between the portable position terminal 20.
- the current location of the portable location terminal 20 is calculated through known triangulation methods, etc., and the calculated current location is displayed on a map m representing an indoor structure such as a museum.
- the present invention is fixedly installed in various areas of the room so as to provide location information, and receives the node signal generator 10 and the sound waves emitted from the node signal generator 10 to emit sound waves. It includes a portable location terminal 20 for calculating and displaying the current location. In addition, the management server 30 can be added as needed.
- the node signal generator 10 basically includes a node speaker 14 to emit sound waves to the portable location terminal 20.
- the node microphone 15 may be added to receive sound waves from the portable location terminal 20.
- the portable location terminal 20 is provided in a rental form to a user in a museum and the like, and basically includes a terminal microphone 21 to receive sound waves emitted from the node signal generator 10.
- the front of the portable location terminal 20 is provided with a display unit 25 so that the map m corresponding to the indoor structure is displayed.
- the map m the current position 20 'of the portable location terminal 20 is displayed (' star 'shape).
- the terminal speaker 27 is added to the rear to emit sound waves toward the node signal generator 10 as an example.
- the management server (see 30 in FIG. 6) tracks and records the movement path of the portable location terminal 20, and further provides various services information including the map m to the portable location terminal 20. Although not shown in FIG. 3, the management server 30 is installed in various places including the management room.
- the node signal generator 10 is fixedly installed at a specific location in the room, and emits sound waves of an inaudible frequency band including its own ID (ID_node), absolute position information, and signal generation time, respectively.
- ID_node its own ID
- absolute position information absolute position information
- signal generation time signal generation time
- the node signal generator 10 includes a plurality of node signal generators 10, the node signal generator 10 includes its own number ID_node so as to distinguish them from each other.
- Absolute location information includes latitude, longitude and altitude of the location where it is installed.
- the signal generation time means the time at which sound waves are generated.
- the reason for using latitude, longitude, and altitude for absolute position information above is a conventional satellite positioning device (GPS) in a local positioning device using sound waves of the present invention when the terminal or other portable equipment to which the present invention is applied is taken out. It is to be able to pass the information in a seamless (seamless).
- GPS satellite positioning device
- the satellite positioning device when it enters from the outside from the outside, the satellite positioning device is also used to continuously transfer to the local positioning device using the sound wave of the present invention. That is, when using the program to use the satellite positioning device when the outside is to be able to receive the coordinates through the present invention indoors.
- the node signal generator 10 includes a node memory 11, a node timer 12, a node sound wave generator 13, a node speaker 14, a node microphone 15, and a node wired / wireless communication unit. 16 and the node control unit 17 are included.
- the node memory 11 stores the above-described unique number, absolute position information, signal generation time, and the like. Of course, various application programs for processing the node signal generator 10 and the like are also stored.
- the node timer 12 is a type of clock that provides the node controller 17 with the current time so that the time at which sound waves are emitted can be known. As such, the time provided by the node timer 12 corresponds to a signal generation time stored in the node memory 11.
- the node sound wave generator 13 generates sound waves of an inaudible frequency band each including the unique number and absolute position information provided from the node memory 11 and the signal generation time information provided from the node timer 12.
- the reason for using sound waves in the inaudible frequency band is to prevent visitors from listening in the room, and various information such as unique numbers are included in the sound waves through various signal processing and signal modulation.
- the node speaker 14 emits sound waves generated by the node sound wave generator 13. Since sound waves may be transmitted using an antenna or an ultrasonic oscillator in addition to the speaker, it is obvious that such an antenna or an ultrasonic oscillator is substantially the same as the node speaker 14.
- the node microphone 15 and the node wired / wireless communication unit 16 are added as necessary.
- the node microphone 15 receives sound waves emitted from the portable location terminal 20, and the node wired / wireless communication unit 16 receives the received sound waves.
- the portable location terminal 20 emits a sound wave including its unique number ID_terminal and a signal generation time t_t to the node signal generator 10, and the node signal generator 10 receives the sound wave therefrom.
- the time t_n is added to the management server 30.
- the management server 30 may calculate the current location of the portable location terminal 20 and manage the calculated results collectively. .
- the node controller 17 is the overall process of the node signal generator 10, including the node memory 11, the node timer 12, the node sound wave generator 13, the node wired and wireless communication unit 16 and the like described above. In charge of.
- the portable location terminal 20 receives sound waves emitted from the plurality of node signal generators 10, and calculates a distance from the node signal generator 10 using the difference between the signal generation time and the reception time. Further, the calculated current position is calculated by combining the calculated distance and absolute position information, and the calculated current position is displayed on the display unit 25.
- the portable location terminal 20 includes a terminal microphone 21, a filter unit 21a, a terminal position calculator 22, a terminal timer 23, a terminal memory 24, and a display unit 25. ), A terminal sound wave generator 26, a terminal speaker 27, a terminal wireless communication unit 28, and a terminal controller 29.
- the terminal microphone 21 receives sound waves emitted from the node signal generator 10.
- a sound wave receiving antenna may be used, and the terminal microphone 21 and the sound wave receiving antenna may be viewed as substantially the same configuration.
- the filter unit 21a filters the sound waves received through the terminal microphone 21 to remove noise.
- a low noise amplifier (LNA) or the like may be connected to the filter unit 21a.
- LNA low noise amplifier
- the terminal position calculating section 22 calculates the current position of the portable position terminal 20.
- the terminal position calculator 22 includes, for example, a distance calculator 22a for calculating a distance and a position calculator 22b for calculating a current position based on the calculated distance.
- the distance calculator 22a is a difference between the signal generation time t1 (ie, the sound wave emission time of the node signal generator) and the reception time t2 (ie, the time received from the portable location terminal) included in the received sound wave.
- the position calculator 22b calculates the current position of the portable location terminal 20 by combining the calculated distance and absolute position information.
- the position calculator 22b usually calculates the distances to the three nearest node signal generators 10, respectively, and calculates the current position using a known triangulation formula or the like in consideration of absolute position information.
- the terminal position calculating unit 22 composed of the distance calculating unit 22a and the position calculating unit 22b can determine where the portable position terminal 20 is currently located in an indoor space such as a museum. Further, the calculated current position is displayed on the display unit 25 to be described later, and informs the holder (eg, a visitor, etc.) of the holder.
- the terminal timer 23 provides the distance between the node signal generator 10 and the portable location terminal 20 as described above by providing the current time at which the sound wave is received to the distance calculator 22a of the terminal position calculator 22. To calculate.
- the terminal memory 24 basically records the map m representing the structure of the room and the calculated current position information.
- the map m is usually composed of an image file and is displayed on the display unit 25 through predetermined signal processing.
- the current location (see 20 'of FIG. 3) of the portable location terminal 20 is also mapped to the map m.
- the terminal memory 24 also stores various pieces of information corresponding to the map m.
- the various information includes information on various contents such as entrances, parking locations, and convenience facilities, as well as descriptions of objects or exhibits. Accordingly, the map m and the information are displayed on the display unit 25 to provide more various services.
- the display unit 25 an LCD panel or the like may be used, and a touch screen may be mounted to improve convenience.
- the display unit 25 displays a map m representing various indoor structures and various kinds of information.
- a touch screen is included, the display unit 25 touches a specific area displayed to acquire necessary information.
- the terminal sound wave generator 26 and the terminal speaker 27 are used to finally record the current position of the portable location terminal 20 in the management server 30 as described above.
- the terminal sound wave generator 26 generates sound waves in the inaudible frequency band including the unique number ID_terminal and the signal generation time t_t of the portable location terminal 20 itself.
- the terminal speaker 27 emits sound waves generated by the terminal sound wave generator 26.
- the sound waves emitted from the portable location terminal 20 are received through the node microphone 15, and the node signal generator 10 adds the time t_n at which the sound waves are received, and then, through the node wired / wireless communication unit 16, the management server ( 30).
- the management server 30 calculates the current position of the portable location terminal 20 using this.
- a method of directly transmitting data signal-processed information to the management server 30 instead of sound waves in the portable location terminal 20 may also be used.
- the terminal wireless communication unit 28 is used.
- the method of obtaining information on the current location of the portable location terminal 20 in the management server 30 may be directly transmitted from the portable location terminal 20 or received through the node signal generator 10. Anything is therefore applicable.
- the received information may be directly provided with the current position calculated by the terminal position calculation unit 22 of the portable location terminal 20, and the unique number, sound wave emission signal, sound wave arrival signal, etc. of the portable location terminal 20 may be provided.
- basic information for calculating the location of the portable location terminal 20 may be provided.
- the terminal wireless communication unit 28 which has not been described above, is used for communication for various purposes, such as receiving the map m from the management server 30 or transmitting current location data to the management server 30, and the terminal controller 29. Is responsible for the overall process of the portable location terminal 20.
- the present invention preferably further comprises a management server 30 for recording the current location information of the portable location terminal 20.
- the management server 30 includes a location information database 31, a map database 32, a guide information database 33, a server wired / wireless communication unit 34, a server location operation unit 35, and a central processing unit.
- Device 36 includes a location information database 31, a map database 32, a guide information database 33, a server wired / wireless communication unit 34, a server location operation unit 35, and a central processing unit.
- Device 36 includes a location information database 31, a map database 32, a guide information database 33, a server wired / wireless communication unit 34, a server location operation unit 35, and a central processing unit.
- the location information database 31 records the unique number and current location of the portable location terminal 20 possessed by each user (for example, a museum visitor). This allows you to see the path of multiple users.
- the present invention may be used for various purposes, such as finding a lost child using the current location of the portable location terminal 20.
- the map database 32 stores a map m corresponding to the structure of the room managed by the management server 30.
- the map m stored in the map database 32 is transmitted to the remote portable location terminal 20 through the server wired / wireless communication unit 34.
- the map database 32 also stores the installation location and the unique number of the node signal generator 10 installed indoors.
- information (or description) of various facilities or contents corresponding to each location of the map m is also stored and provided to the portable location terminal 20 together with the map m.
- the server position calculator 35 receives the unique number and sound wave generation time of the portable position terminal 20 from the node signal generator 10, the reception time and the unique number from the node signal generator 10, and the like. ) Calculates the current position of the portable location terminal 20.
- the central processing unit 36 controls the respective components of the management server 30 described above.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Position Fixing By Use Of Radio Waves (AREA)
- Traffic Control Systems (AREA)
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Abstract
Description
Claims (6)
- 실내의 특정 위치에 각각 고정 설치되며, 자신의 고유 번호(ID_node)와, 절대 위치 정보 및 신호 발생 시각을 포함한 비가청 주파수 대역의 음파를 각각 방출하는 복수개의 노드 신호 발생기(10); 및복수개의 상기 노드 신호 발생기(10)에서 방출된 음파를 각각 수신하고, 상기 신호 발생 시각과 수신 시각의 차이를 이용하여 상기 노드 신호 발생기(10)와의 거리를 산출하고, 상기 산출된 거리 및 절대 위치 정보를 조합하여 자신의 현재 위치를 산출하며, 상기 산출된 현재 위치를 디스플레이에 표시하는 휴대용 위치 단말기(20);를 포함하되,상기 노드 신호 발생기(10)는,상기 노드 신호 발생기(10)의 고유 번호 및 절대 위치 정보를 기록하는 노드 메모리(11)와; 상기 신호 발생 시각을 제공하는 노드 타이머(12)와; 상기 노드 메모리(11)에서 제공된 고유 번호 및 절대 위치 정보와, 상기 노드 타이머(12)에서 제공된 신호 발생 시각 정보를 포함한 상기 비가청 주파수 대역의 음파를 생성하는 노드 음파 생성부(13); 및 상기 노드 음파 생성부(13)에서 생성된 음파를 방출하는 노드 스피커(14);를 포함하는 것을 특징으로 하는 음파를 이용한 위치 정보 제공 시스템.
- 제1항에 있어서,상기 노드 신호 발생기(10)는,상기 휴대용 위치 단말기(20)로부터 상기 휴대용 위치 단말기(20)의 고유 번호(ID_terminal)와 신호 발생 시각(t_t)을 포함한 음파를 수신하고, 상기 휴대용 위치 단말기(20)에서 방출된 음파를 수신한 시각(t_n)과 함께 관리 서버(30)로 전송하고,상기 관리 서버(30)는,상기 휴대용 위치 단말기(20)의 고유 번호(ID_terminal)와, 신호 발생 시각(t_t) 및 상기 노드 신호 발생기(10)에서 음파를 수신한 시각(t_n)을 이용하여 상기 휴대용 위치 단말기(20)의 현재 위치를 산출하는 것을 특징으로 하는 음파를 이용한 위치 정보 제공 시스템.
- 제1항에 있어서,상기 휴대용 위치 단말기(20)는,상기 노드 신호 발생기(10)에서 방출된 음파를 수신하는 단말 마이크(21)와;상기 단말 마이크(21)를 통해 수신된 음파의 신호 발생 시각과 수신 시각의 차이를 이용하여 상기 노드 신호 발생기(10)와의 거리를 산출하는 거리 산출부(22a) 및 상기 산출된 거리 및 절대 위치 정보를 조합하여 자신의 현재 위치를 산출하는 위치 산출부(22b)로 이루어진 단말 위치 연산부(22)와;상기 단말 위치 연산부(22)의 거리 산출부(22a)에 상기 음파를 수신한 현재 시각을 제공하는 단말 타이머(23)와;상기 실내의 구조를 나타내는 맵(m)(map)을 기록하는 단말 메모리(24); 및상기 단말 메모리(24)에서 제공된 맵(m)에 상기 단말 위치 연산부(22)에서 제공된 상기 휴대용 위치 단말기(20)의 현재 위치 정보를 맵핑하여 디스플레이하는 디스플레이부(25);를 포함하는 것을 특징으로 하는 음파를 이용한 위치 정보 제공 시스템.
- 제1항에 있어서,상기 노드 신호 발생기(10) 또는 휴대용 위치 단말기(20)로부터 상기 휴대용 위치 단말기(20)의 현재 위치 정보를 제공받아 기록하는 관리 서버(30)를 더 포함하는 것을 특징으로 하는 음파를 이용한 위치 정보 제공 시스템.
- 제4항에 있어서,상기 관리 서버(30)는 상기 휴대용 위치 단말기(20)에 상기 실내의 구조를 나타내는 맵(m)(map)을 제공하는 것을 특징으로 하는 음파를 이용한 위치 정보 제공 시스템.
- 제5항에 있어서,상기 관리 서버(30)는 상기 맵(m)에 표현된 각 구역의 시설에 대한 설명 또는 상기 맵(m)에 표현된 각 콘텐츠에 대한 설명을 상기 맵(m)과 함께 상기 휴대용 위치 단말기(20)에 제공하고,상기 휴대용 위치 단말기(20)는 상기 맵(m)과, 상기 설명 및 상기 현재 위치를 디스플레이하는 것을 특징으로 하는 음파를 이용한 위치 정보 제공 시스템.
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Also Published As
Publication number | Publication date |
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US20160116569A1 (en) | 2016-04-28 |
KR101303729B1 (ko) | 2013-09-04 |
CN110488224A (zh) | 2019-11-22 |
US9625567B2 (en) | 2017-04-18 |
CN105209930A (zh) | 2015-12-30 |
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