KR102471001B1 - Method and apparatus for providing vehicle location service in the shadow area of the gps - Google Patents

Abstract

The present invention relates to a method, apparatus, and system for providing vehicle route guidance service. ) Providing a GPS-based route guidance service using base map information and automatically switching the GPS-based route guidance service to an infrastructure-based route guidance service when a shadow area is detected during the provision of the GPS-based route guidance service Including, the infrastructure-based road guidance service is characterized in that using a Bluetooth beacon transmitter disposed in the shadow area. Therefore, the present invention has an advantage of providing a vehicle route guidance service without interruption even in a shaded area.

Description

Method and apparatus for providing vehicle route guidance service in GPS shaded area

The present invention relates to a vehicle route guidance service providing technology, and more particularly, to a vehicle in a GPS (Global Positioning System) shadow area where it is possible to provide a vehicle route guidance service by using infrastructure in a shadow area where reception of GPS (Global Positioning System) signals is impossible. It relates to a method and apparatus for providing a road guidance service.

Vehicles such as automobiles are required to function as various convenience means to provide users with a more stable and comfortable driving state beyond their function as means of transportation.

Accordingly, various electronic products and sensors are being reflected in automobiles. These electronic devices may provide various services while exchanging information through interworking with external devices as well as internal parts of the vehicle.

An external mobile device or an external information providing system maintains information necessary for the vehicle, and various services are provided through which vehicle occupants can use the information by delivering the requested information to a corresponding electronic device in the vehicle according to the vehicle's request.

For example, a vehicle navigation system has its own MAP and provides a road guidance function using a GPS signal.

In addition, the vehicle navigation system may provide road guidance by reflecting real-time traffic information in conjunction with a telematics function in order to increase usability of road guidance.

In addition, the vehicle navigation system receives destination information from a telematics center or a user's mobile device and uses it as a destination for road guidance.

These interoperable services are mainly made possible by using a vehicle communication modem like a telematics service or by transmitting necessary information to a vehicle AVN (Audio Video Navigation) system through a user's mobile device.

In general, a road guidance service operates by mapping set destination information and various traffic information received from an external information providing system to MAP information of a vehicle AVN, and then providing road guidance from a current location based on a received GPS signal. .

However, when driving after selecting a destination in an underground parking lot, the GPS signal is not normally received by the vehicle, so the route guidance service is not normally performed.

In addition, if the entrance and exit of the vehicle in the underground parking lot in the building are different, if the vehicle leaves the building after not locating the vehicle in a shaded area where GPS signals are not received, the wrong route information is displayed on the navigation screen. However, when a GPS signal is received normally, the screen suddenly changes.

Therefore, the conventional vehicle AVN system has a problem in that it cannot provide a normal road guidance service in a shadow area where GPS signals cannot be received even if it has MAP information necessary for road guidance.

The present invention has been devised to solve the above-described problems of the prior art, and an object of the present invention is to provide a method and apparatus for providing vehicle route guidance service in a GPS shadow area.

Another object of the present invention is to provide a vehicle route guidance service capable of providing seamless vehicle route guidance service by automatically switching from a GPS-based route guidance mode to an infrastructure-based route guidance mode upon recognizing entry into a GPS shadow area. To provide a method and device.

Another object of the present invention is to provide a vehicle route guidance service providing method and apparatus capable of enhancing compatibility between a vehicle and local infrastructure and providing an optimized route guidance method based on infrastructure configuration information.

The technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

The present invention provides a vehicle route guidance service providing method, apparatus and system.

A method for providing a vehicle route guidance service in a vehicle AVN (Audio Video Navigation) system according to an embodiment of the present invention includes the steps of providing a GPS-based route guidance service using pre-stored Global Positioning System (GPS)-based map information. and automatically switching the GPS-based route guidance service to an infrastructure-based route guidance service when a shadow area is detected while providing the GPS-based route guidance service, wherein the infrastructure-based route guidance service is disposed in the shadow area. It is characterized by using a Bluetooth beacon transmitter.

According to another embodiment of the present invention, a vehicle AVN (Audio Video Navigation) system for providing a road guidance service for a vehicle is based on a GPS (Global Positioning System) using a storage unit for maintaining map information based on the GPS and the GPS-based map information. When a shadow area is detected while providing a road guidance service, a control unit for stopping the GPS-based road guidance service and automatically switching to an infrastructure-based road guidance service and receiving a beacon signal from a Bluetooth beacon transmitter disposed in the shade area; and a wireless communication unit receiving shaded area map information for the infrastructure-based road guidance service from an information providing server.

A vehicle route guidance service providing system for providing a vehicle route guidance service according to another embodiment of the present invention is installed inside the vehicle and uses GPS (Global Positioning System)-based map information stored in advance to a destination input by a user. A vehicle AVN system providing a GPS-based road guidance service, a Bluetooth beacon transmitter disposed in a shaded area and transmitting a beacon signal necessary for determining the current location of the vehicle, and a shaded area corresponding to the shaded area at the request of the vehicle AVN system. and an information providing server providing map information, wherein the vehicle AVN system stops the GPS-based route guidance service when detecting the shadow area while providing the GPS-based route guidance service using the GPS-based map information, and providing the GPS-based route guidance service. It is characterized in that it automatically switches to an infrastructure-based road guidance service using local map information.

Another embodiment of the present invention may provide a computer-readable recording medium on which a program for executing the above-described vehicle route guidance service providing method is recorded.

The above aspects of the present invention are only some of the preferred embodiments of the present invention, and various embodiments in which the technical features of the present invention are reflected are detailed descriptions of the present invention to be detailed below by those skilled in the art. It can be derived and understood based on.

The effects of the method and apparatus according to the present invention are described as follows.

The present invention has the advantage of providing a vehicle route guidance service even in a GPS shaded area.

In addition, the present invention has an advantage of providing a vehicle navigation service without interruption by automatically switching from a GPS-based road guidance mode to an infrastructure-based road guidance mode when recognizing entry into a GPS shadow area.

In addition, the present invention installs BT Beacons under piers, under overpasses, between tall buildings, etc., and provides a road guidance service using BT_Beacon Map in the area where the BT Beacon is installed, thereby providing road guidance in shaded areas where GPS signal reception is impossible. It has the advantage of effectively improving guidance errors.

In addition, the present invention has the advantage of providing a vehicle route guidance service providing method and apparatus capable of increasing compatibility between vehicles and local infrastructure and providing an optimized route guidance method based on infrastructure configuration information.

Advantages and effects obtainable from the present invention are not limited to the above-mentioned advantages and effects, and other effects not mentioned will become clear to those skilled in the art from the description below. You will be able to understand.

The accompanying drawings are provided to aid understanding of the present invention, and provide embodiments of the present invention together with a detailed description. However, the technical features of the present invention are not limited to specific drawings, and features disclosed in each drawing may be combined with each other to form a new embodiment.
1 is a diagram for explaining the configuration of a vehicle route guidance service providing system according to an embodiment of the present invention.
2 is a block diagram for explaining the configuration of a vehicle AVN system according to an embodiment of the present invention.
3 is a diagram for explaining shadow area map information according to an embodiment of the present invention.
4 is a diagram for explaining shadow area map information according to another embodiment of the present invention.
5 is a diagram for explaining a vehicle location determination method on a shadow area map according to an embodiment of the present invention.
6 is a flowchart illustrating a method for guiding a vehicle route according to an embodiment of the present invention.
7 is a pop-up screen for explaining a method of providing a road guidance service based on a Bluetooth beacon according to an embodiment of the present invention.

Hereinafter, an apparatus and various methods to which embodiments of the present invention are applied will be described in more detail with reference to the drawings. The suffixes "module" and "unit" for components used in the following description are given or used together in consideration of ease of writing the specification, and do not have meanings or roles that are distinct from each other by themselves.

In the above, even though all the components constituting the embodiment of the present invention have been described as being combined or operated as one, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all of the components may be selectively combined with one or more to operate. In addition, although all of the components may be implemented as a single independent piece of hardware, some or all of the components are selectively combined to perform some or all of the combined functions in one or a plurality of hardware. It may be implemented as a computer program having. Codes and code segments constituting the computer program may be easily inferred by a person skilled in the art. Such a computer program may implement an embodiment of the present invention by being stored in a computer readable storage medium, read and executed by a computer. A storage medium of a computer program may include a magnetic recording medium, an optical recording medium, and the like.

In addition, terms such as "include", "comprise" or "have" described above mean that the corresponding component may be inherent unless otherwise stated, excluding other components. It should be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the meaning in the context of the related art, and unless explicitly defined in the present invention, they are not interpreted in an ideal or excessively formal meaning.

Also, terms such as first, second, A, B, (a), and (b) may be used in describing the components of the present invention. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element is or may be directly connected to the other element, but there is another element between the elements. It will be understood that elements may be “connected”, “coupled” or “connected”.

1 is a diagram for explaining the configuration of a vehicle route guidance service providing system according to an embodiment of the present invention.

Referring to FIG. 1 , a vehicle route guidance service providing system 100 largely includes a vehicle AVN system 10, a Global Positioning System (GPS) 20, a base station 30, an information providing server 40, and a user terminal 50. And it may be configured to include a Bluetooth beacon transmitter (60).

Here, the Bluetooth beacon transmitter 60 may be installed in a shaded area 61 where GPS signals are not normally received.

The vehicle AVN system 10 may be a GPS receiving antenna and a wireless communication antenna provided in the vehicle - for example, a mobile communication antenna such as a Long-Term Evolution (LTE)/LTE-A, WIFI communication antenna, etc., but is not limited thereto. can be interlocked with the not-.

The vehicle AVN system 10 may provide a GPS-based road guidance service in an area where GPS signals can be received.

On the other hand, when entering an area where GPS signal reception is impossible, the vehicle AVN system 10 may provide a road guidance service based on a signal received from the Bluetooth beacon transmitter 60 and pre-stored Bluetooth beacon map information.

For example, the Bluetooth beacon map information may be 3D map information in which the Bluetooth beacon transmitter 60 disposed inside/outside a building, road facility, etc. is disposed. In addition, the Bluetooth beacon map information may further include information on the location of the entrance and exit of the building where the Bluetooth beacon transmitter 60 is located and output power information of the Bluetooth beacon transmitter 60.

Here, the vehicle AVN system 10 may download Bluetooth beacon map information from the information providing server 40 .

For example, the vehicle AVN system 10 may receive Bluetooth beacon map information through a corresponding base station 30 of a mobile communication network to which it is connected.

As another example, the vehicle AVN system 10 may be interconnected with the user terminal 50 through short-range wireless communication (for example, Bluetooth communication), and may be interconnected through Bluetooth communication through the user terminal 50 connected to the base station 30. Beacon map information may be obtained.

When it is confirmed that the vehicle AVN system 10 is approaching a shadow area where GPS signals cannot be received, the GPS-based road guidance service may be terminated and the infrastructure-based road guidance service may be started. Here, the infrastructure may refer to the Bluetooth beacon transmitter 60 disposed in the shaded area 61, but this is only one embodiment, and is installed in a shaded area such as a building basement or between high-rise buildings in a large city, and a location sensor Any device capable of providing information is sufficient.

Hereinafter, a vehicle route guidance service scenario according to the present invention will be briefly described.

When a destination is set by a vehicle occupant, the vehicle AVN system 10 may check whether a GPS shaded area exists during the movement section to the destination by referring to pre-stored Bluetooth beacon map information while moving to the destination. As a result of checking, when entering a GPS shaded area, the vehicle AVN system 10 may provide a GPS-based road guidance service and a Bluetooth beacon signal-based 3D road guidance service.

For example, the destination may be set to an underground parking lot of a building. In this case, a GPS-based road guidance service is provided until the entrance of the parking lot of the corresponding building, and upon entering the parking lot entrance, an infrastructure-based road guidance service may be provided.

As another example, when the vehicle passes through an overpass ramp section, the vehicle AVN system 10 provides the overpass ramp passing direction (vehicle coming down or going up from the overpass), or Bluetooth beacon information (altitude or elevation) when driving under the overpass. The location reference point) can be used as a guidance reference point to correct the location, and after checking whether the road is up or down with reference to the corrected location, it is possible to perform route guidance in three dimensions.

The vehicle AVN system 10 measures a Received Signal Strength Indicator (RSSI) of a signal received from at least one Bluetooth beacon transmitter 60, and a universal unique identifier of the closest Bluetooth beacon transmitter 60 based on the measured RSSI. (UUID (Universally Unique IDentifier)) can be identified.

The vehicle ANV system 10 may identify a current location in a GPS shadow area using the identified universal unique identifier.

2 is a block diagram for explaining the configuration of a vehicle AVN system according to an embodiment of the present invention.

Referring to FIG. 2 , the vehicle AVN system 10 includes a wireless communication unit 11, a wired communication unit 12, a driving information collection unit 13, an in-vehicle communication unit 14, an output unit 15, and an input unit 16. , a storage unit 17, an input key module 18 and a control unit 19, and the like.

The wireless communication unit 11 may exchange radio signals with the user terminal 50, the base station 30, the Bluetooth beacon transmitter 60, and the like.

For example, the wireless communication unit 11 may include a broadcast reception module, a mobile communication module, a wireless Internet module, a short-distance communication module, and a location information module.

The broadcast reception module may receive a broadcast signal and/or broadcast-related information from an external broadcast management server through a broadcast channel. Here, the broadcast channel may include a satellite channel and a terrestrial channel.

The broadcast management server may refer to a server that generates and transmits a broadcast signal and/or broadcast-related information or a server that receives and transmits a previously generated broadcast signal and/or broadcast-related information to a terminal.

The broadcast signal includes not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a TV broadcast signal or a broadcast signal in which a data broadcast signal is combined with a radio broadcast signal.

The broadcast-related information may refer to information related to a broadcast channel, a broadcast program, or a broadcast service provider.

The broadcast related information may also be provided through a mobile communication network. In this case, broadcast related information may be received through the mobile communication module.

The mobile communication module may transmit and receive radio signals with base stations constituting a mobile communication network. The wireless signal may include various control signals and user data for voice calls, video calls, data communications, and the like.

The wireless Internet module refers to a module for wireless Internet access, and may be built into the vehicle AVN system 10 or externally through a predetermined connection terminal. As a wireless Internet access technology, WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), etc. may be used, but are not limited thereto. don't

The short-range communication module refers to a module that performs short-range wireless communication. Here, Bluetooth, radio frequency identification (RFID) communication, infrared data association (IrDA), ultra wideband (UWB) communication, ZigBee communication, and the like may be used as short-distance wireless communication technologies.

When the short-distance communication module is equipped with a Bluetooth communication function, RSSI of a beacon signal transmitted by the Bluetooth beacon transmitter 60 may be measured. Here, the measured RSSI information may be delivered to the control unit 19.

The location information module is a module for confirming or acquiring the current location of the vehicle. Representative examples of the location information module may include a Global Position System (GPS) module, a Global Navigation Satellite System (GNSS), and the like. According to the current technology, the GPS module 115 calculates information about distances from one point (entity) to three or more satellites and information about the time at which the distance information was measured, and then calculates the calculated distance information. By applying trigonometry to , it is possible to calculate three-dimensional location information according to latitude, longitude, and altitude for one point (object) at one time. Furthermore, a method of calculating location and time information using three satellites and correcting an error in the calculated location and time information using another satellite is also used. The GPS module may continuously calculate the current location in real time and calculate speed information using it.

The wired communication unit 12 may exchange information with the user terminal 50 by wire.

The driving information collection unit 13 may collect driving-related information by identifying information received through the in-vehicle communication unit 14 . Here, the driving-related information includes driving speed information, steering wheel manipulation and gear manipulation information-that is, steering information-, corresponding driving speed and time information for which steering wheel manipulation is maintained-hereinafter referred to as maintenance time information for convenience of description-, etc. can include

The in-vehicle communication unit 14 may include, but is not limited to, vehicle Ethernet communication, CAN (Controller Area Network) communication, LIN communication, Flexlay communication, etc., and any network for communication between devices mounted inside the vehicle enough

The in-vehicle communication unit 14 may receive driving-related information from the corresponding vehicle ECU 70 through an in-vehicle communication network and transmit it to the driving information collecting unit 13 .

The vehicle AVN system 10 generates an output unit 15 that outputs various information transmitted and received from the outside and road guidance information according to a control signal of the control unit 19 and various input signals according to user manipulation to the control unit 16. An input unit 16 for transmitting may be provided.

Here, the output unit 15 may include, but is not limited to, a display means - including LCD, LED, OLED, etc. -, a sound output means - for example, a speaker system -, a vibration means, and the like.

The input unit 16 may include, but is not limited to, a touch input unit integrally provided with the display (eg, including various screen touch sensors), a voice input unit such as a microphone, and the like.

The storage unit 17 may maintain operating software and various application software necessary for the operation of the vehicle AVN system 10 . In addition, the storage unit 17 may store various map information for road guidance service, voice guidance information, traffic information, driving state information, user setting information, and the like.

For example, the map information may include general map information for a GPS-based road guidance service as well as shadow area map information for an infrastructure-for example, a Bluetooth beacon transmitter-based road guidance service.

Here, the shaded area map information includes access/exit connection road information corresponding to the shaded area, area and direction information in which vehicles can proceed within the shaded area, entry/exit location information corresponding to the shaded area, It may include, but is not limited to, vehicle height information, modeling information on a 3D structure for each shaded area, Bluetooth beacon transmitter placement information for each shaded area, etc., and will become clearer through descriptions of the drawings to be described later.

In addition, the storage unit 17 may also store information about the Bluetooth beacon transmitter 60 disposed in the shaded area - hereinafter referred to as Bluetooth beacon information and a business card. Here, the Bluetooth beacon information may include, but is not limited to, UUID information, transmission power intensity information, location information disposed in a shadow area, and the like.

The input key module 18 may detect a user input through various buttons, a jog wheel, and the like, and transmit it to the control unit 19 .

3 is a diagram for explaining shadow area map information according to an embodiment of the present invention.

Assume that the shaded area in FIG. 3 is an underground parking lot in a building composed of a first basement floor 310 and a second basement floor 320.

As shown in FIG. 3, a plurality of Bluetooth beacon transmitters 330 may be disposed in the shaded area, and a movable driving route of the vehicle 300 in the shaded area is provided on the floor-by-floor map-hereinafter, for convenience of description, A business card called 'the shaded area driving path 314' may be displayed.

In addition, the shadow area map information may include information about the Bluetooth beacon transmitters 311, 312, and 313 disposed at key points.

Referring to FIG. 3, reference number 311 denotes a Bluetooth beacon transmitter disposed at a vehicle entrance/exit, and reference numbers 312 and 313 denote Bluetooth beacon transmitters disposed in an inter-floor movement section of an underground parking lot.

When the vehicle 300 approaches near the shaded area, the vehicle AVN system 10 identifies the Bluetooth beacon transmitter 311 disposed at the entrance/exit, and sets the route guidance mode from the GPS-based route guidance mode to infrastructure-based route guidance. mode can be switched.

Thereafter, the vehicle AVN system 10 may identify the shaded area based on the UUID of the Bluetooth beacon transmitter 311 disposed at the entrance/exit, and read shaded area map information corresponding to the identified shaded area from the internal memory. It can be output on the provided screen.

The vehicle AVN system 10 enters the shaded area, identifies a current location in the shaded area based on beacon signals received from the Bluetooth beacon transmitters 330 disposed in the shaded area, and displays the identified location on a map of the shaded area. can be mapped to At this time, the vehicle 300 may move along a path indicated by reference numeral 315 .

Hereinafter, with reference to FIG. 3, a road guidance service providing method including parking guidance in an underground parking lot of a building will be described.

When the vehicle enters the underground parking lot, the vehicle AVN system 10 receives predetermined information for vehicle guidance in a shaded area without a GPS signal through the Bluetooth beacon transmitter 311 disposed at the entrance of the parking lot, and receives non-GPS based Bluetooth A beacon-based road guidance service may be initiated.

When a parking space guide service can be provided in a corresponding parking lot, the vehicle AVN system 10 can obtain location information about an empty parking space from the building parking management system. At this time, the location information on the empty parking space may be obtained through a Bluetooth beacon transmitter 311 disposed at the entrance of the parking lot or an information signal corresponding thereto. For example, when recognizing that a parking space 321 exists between Bluetooth beacon transmitters 2 and 3 on the second basement floor 320, the vehicle AVN system 10 provides the above-described road guidance service based on the 3D MAP of the shadow area. It is possible to guide the corresponding vehicle 300 to the parking space 321 of the second basement floor 320 by providing.

In the above example, if the vehicle AVN system 10 cannot receive a GPS signal when leaving the vehicle, it may start an infrastructure-based road guidance service. At this time, the vehicle AVN system 10 may identify whether or not the vehicle is currently in a shaded area based on the unique identification information received from the nearest Bluetooth beacon transmitter of the parked vehicle, and automatically set the road guidance mode according to the identification result. It can be set to route guidance mode based on facilities.

The vehicle AVN system 10 may use the interfloor movement road at the current parking location 321 using the Bluetooth beacon transmitter B 313 and the Bluetooth beacon transmitter C 313 . Then, when the vehicle 300 passes the Bluetooth beacon transmitter a 311 according to the shaded area route guidance logic, the vehicle AVN system 10 changes the route guidance mode from the infrastructure-based route guidance mode to the GPS-based route guidance mode. can be automatically converted to

4 is a diagram for explaining shadow area map information according to another embodiment of the present invention.

Assume that the vehicle 400 in FIG. 4 passes through a tunnel.

A Bluetooth beacon transmitter for displaying current location information of a vehicle in a shaded area 410 such as a tunnel is largely a Bluetooth beacon transmitter 430 disposed inside the shaded area and a Bluetooth beacon transmitter disposed at the entrance/exit of the shaded area ( 411 and 412). Hereinafter, a Bluetooth beacon transmitter disposed at a key point such as an entrance/exit of a shaded area will be used interchangeably with an “information signal” to distinguish it from a Bluetooth beacon transmitter 430 disposed inside a shaded area. In fact, the Bluetooth beacon transmitter 430 and the information signalers 411 and 412 may be devices of different types, but in this embodiment, the detailed configuration of the device is not limited.

Referring to FIG. 4 , when a vehicle 400 approaches a tunnel, the vehicle AVN system 10 receives unique identification information—eg, but not limited to, a UUID—from an information signal placed at the entrance. can be obtained The vehicle AVN system 10 may identify that the shadow area 410 has been approached based on the acquired unique identification information, and switch the road guidance mode from the GPS-based road guidance mode to the infrastructure-based road guidance mode.

Thereafter, the vehicle AVN system 10 may identify the shaded area based on the unique identification information of the information signal 411 disposed at the entrance/exit, and store map information of the shaded area corresponding to the identified shaded area in the internal memory. It can be read and displayed on the provided screen.

The vehicle AVN system 10 enters the shaded area, identifies the current location of the vehicle in the shaded area based on the strength of beacon signals received from the Bluetooth beacon transmitters 430 disposed in the shaded area, and displays the identified location. It can be mapped on a shaded area map. At this time, the vehicle 400 may move along a path indicated by reference number 413.

The vehicle AVN system 10 may identify a vehicle traveling direction on a tunnel based on unique identification information of an information signal placed at an entrance/exit of a shadow area.

The shadow area map information according to an embodiment of the present invention may include signal average value information according to distances of each Bluetooth beacon transmitter 430 . At this time, the signal average value may be divided into several levels (or ranges).

For example, referring to FIG. 4 , the average signal value according to the distance of each Bluetooth beacon transmitter 430 can be divided into three ranges (A, B, C), and the average signal value corresponding to each range. (RSSI dBm value) can be defined as -40 (Strong, A), -70 (Medium, B), -100 (WeaK, C). The vehicle AVN system 10 may determine the current location of the vehicle 400 within the shadow area by comparing a signal strength measurement result for at least one Bluetooth beacon transmitter with an average signal value for each range.

Shadow area map information may be compatible with general map information (GPS-based map information). For example, the two map information may be configured with the same MAP data for each scale.

In the above embodiment, the vehicle AVN system 10 may receive fixed GPS information corresponding to a corresponding information signal from a Bluetooth beacon transmitter (or information signal) disposed at a main point. Here, the fixed GPS information may be used to calculate an error range when mapping the current location of the vehicle calculated based on the unique identification information of the Bluetooth beacon transmitter and the RSSI value to the shadow area map. For example, after acquiring unique identification information, RSSI value, and GPS information, the vehicle AVN system 10 fixes GPS information to a GPS signal when measuring a distance to a Bluetooth beacon transmitter using an average value of RSSI strength for each predefined range. can be used as points.

5 is a diagram for explaining a vehicle position determination method on a shadow area map according to an embodiment of the present invention.

Referring to FIG. 5 , assume that a vehicle 500 enters an underground parking lot inside a building. When the vehicle enters the underground parking lot of the building, the vehicle AVN system 10 may receive GPS information from the information signal 511 disposed at the entrance of the parking lot and map the current location of the vehicle on the map of the shadow area 510 . As the vehicle 500 enters the inside of the parking lot and enters the shaded area 510, the current location of the vehicle is determined based on the signal coming from the Bluetooth beacon transmitter 530 placed nearby instead of the GPS signal, and the map of the shaded area is displayed. I can map my location to .

As shown in FIG. 5, when the vehicle 500 drives in the direction of A1->A2->A3->A4 after entering the parking lot, the vehicle AVN system 10 includes ( A current vehicle location may be calculated based on a predefined) RSSI average value mapping table, unique identification information of a Bluetooth beacon transmitter, and RSSI measurement values.

When the vehicle 500 passes the location A1, the vehicle AVN system 10 generates a signal with unique identification information of No. 2 and an RSSI average value range of D, and a signal with unique identification information of No. 8 and an RSSI average value range of D. signals can be received simultaneously.

At this time, the vehicle AVN system 10 may determine that the vehicle 500 is at the position A1. Thereafter, when the vehicle 500 passes the position A2, the vehicle AVN system 10 receives a signal with unique identification information of No. 2, an RSSI average value range of C, and unique identification information of No. 8, and an RSSI average value range of C. C signals can be received simultaneously.

Here, the vehicle AVN system 10 may determine that the vehicle 500 has moved from A1 to A2 and map and display the vehicle on the corresponding road location. When the on-going vehicle 500 makes a left turn and proceeds from B2 to B3, the vehicle AVN system 10 has the unique identification information number 7 and the average RSSI value range maintains the C range, and the unique identification information When the RSSI signal range of No. 1 gradually decreases, it is determined that the vehicle 500 has made a left turn from the location B2 to B3, and the current location of the vehicle 500 can be mapped to the location B3.

In addition, the vehicle AVN system 10 according to an embodiment of the present invention may more accurately correct the current vehicle position using driving state information collected in real time. Here, the driving state information may include driving speed information, steering information, and the like.

For example, the vehicle AVN system 10 may more accurately determine whether the vehicle has rotated or whether the vehicle has moved between floors using a spiral road based on steering wheel rotation information and vehicle speed change information. That is, the vehicle AVN system 10 may use the driving state information as correction information for determining the location of the vehicle.

The information tracked during vehicle driving may include, but is not limited to, steering wheel rotation information, driving speed information, gear operation information, maintenance time information, etc., which are information obtainable within the vehicle.

Position correction based on driving state information has a large margin of error when moving over a long distance, so the position at which the vehicle can move on the map can be calculated using vehicle signals and signal information obtained from the surroundings within a predetermined range. The resulting value can be used as correction information when determining the current position.

6 is a flowchart illustrating a vehicle route guidance method according to an embodiment of the present invention.

Referring to FIG. 6 , the vehicle AVN system 10 may initialize the system and prepare a road guidance service according to vehicle startup (S610). In this case, a GPS-based road guidance mode may be set as a default for the road guidance service. At this time, the user may set a destination.

The vehicle AVN system 10 may determine the current location of the vehicle in the default GPS-based road guidance mode (S620).

If the determination of the current location fails, the vehicle AVN system 10 may determine whether it has entered a shadow area (S630).

As a result of the determination, when entering the shaded area, the vehicle AVN system 10 checks whether the shaded area map information exists in the internal memory, and then changes the road guidance mode from the GPS-based road guidance mode to the Bluetooth beacon-based-namely, based on the check result. , It is possible to provide a road guidance service by switching to an infrastructure-based road guidance mode (S650).

If it is determined in step 630 that the vehicle has not entered the shaded area, the vehicle AVN system 10 may start a GPS-based road guidance service (S640).

When the vehicle AVN system 10 confirms entry into a shadow area while providing a GPS-based road guidance service, it may switch the road guidance mode to a Bluetooth beacon-based road guidance mode in step 650 described above.

If the shadow area map information does not exist in the internal memory in step 650 described above, the vehicle AVN system 10 may directly access the information providing server 40 to acquire the shadow area map information. At this time, the vehicle AVN system 10 may receive shadow area map information through a Bluetooth-paired user terminal or a user terminal connected to a provided USB port.

As another example, the vehicle AVN system 10 may receive map information corresponding to the shaded area from an information beacon or a Bluetooth beacon transmitter disposed on one side of the entrance of the building upon entering a building having a shaded area.

7 is a pop-up screen for explaining a method of providing a road guidance service based on a Bluetooth beacon according to an embodiment of the present invention.

Referring to reference numeral 710 of FIG. 7 , when a user selects a destination on the vehicle AVN system 10, the vehicle AVN system 10 provides additional map information that can be used even in a shaded area within or near the corresponding destination - that is, a shaded area. If the map information is displayed, a predetermined pop-up message window such as reference number 711 may be output to confirm whether to receive a Bluetooth beacon-based route guidance service rather than a GPS-based one upon entering a shaded area. If the “Yes” button of the pop-up window of drawing number 711 is selected, the vehicle AVN system 10 automatically switches the GPS-based route guidance mode to the infrastructure-based route guidance mode when a shaded area is identified after arriving near the destination. Even in the shaded area, the road guidance service can be provided without interruption. On the other hand, if the “No” button of the pop-up window (reference number 711) is selected, the vehicle AVN system 10 can continuously maintain the GPS-based road guidance service.

Referring to reference number 720 of FIG. 7 , if shaded area map information does not exist in the internal memory, the vehicle AVN system 10 determines whether or not to download shaded area map information within a corresponding destination building, as shown in reference number 721 . A predetermined pop-up window for confirming may be displayed. If the user selects the “Yes” button, the vehicle AVN system 10 may initiate a download procedure for corresponding shadow area map information.

It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Accordingly, the above detailed description should not be construed as limiting in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (24)

A method for providing a vehicle route guidance service in an AVN (Audio Video Navigation) system of a vehicle,
providing a GPS-based road guidance service using pre-stored Global Positioning System (GPS)-based map information; and
Automatically switching the GPS-based route guidance service to an infrastructure-based route guidance service when a shadow area is detected while providing the GPS-based route guidance service.
Including, the infrastructure-based road guidance service is characterized by using information received from a Bluetooth beacon transmitter disposed in the shaded area,
Receiving shaded area map information, which is 3D map information including modeling information about a 3D structure of the sound area and information about a Bluetooth beacon transmitter disposed in the shaded area,
Based on the fact that the sound area is detected and information received from a Bluetooth beacon transmitter disposed in the shaded area includes location information about an empty parking space received from a Bluetooth beacon transmitter disposed at a parking lot entrance, the GPS A method for providing a vehicle route guidance service, characterized in that the 3D road guidance service is provided to the empty parking space on the floor where the empty parking space exists by outputting the shaded area map information on a screen instead of the base map information. delete According to claim 1,
The shaded area map information includes access connection road information corresponding to the shaded area, area and direction information in which a vehicle can proceed within the shaded area, entry location information corresponding to the shaded area, and vehicle height capable of passing through the shaded area. A method for providing a vehicle route guidance service, further comprising at least one of information. According to claim 3,
Wherein the information about the Bluetooth beacon transmitter includes at least one of unique identification information, transmission power intensity information, and location information disposed in the shaded area. According to claim 4,
calculating a current location of the vehicle based on the strength of a signal received from the Bluetooth beacon transmitter when entering the detected shadow area; and
displaying the calculated current location on the screen
Further comprising, a method for providing vehicle route guidance service. According to claim 5,
Calculating the current location of the vehicle
Measuring a Received Signal Strength Indicator (RSSI) of at least one Bluetooth beacon transmitter;
determining a predefined range or level corresponding to at least one of the measured RSSI values; and
calculating a current position of the vehicle based on at least one of the determined ranges or levels;
Including, a method for providing a vehicle route guidance service. According to claim 5,
Further comprising obtaining current driving state information of the vehicle,
Calculating the current location of the vehicle,
and correcting the calculated current location using the driving state information. According to claim 7,
The driving state information includes at least one of driving speed information, steering information, and holding time. According to claim 1,
The method for providing a vehicle route guidance service, characterized in that the map information of the shadow area is received through a user terminal connected by wire or wirelessly. According to claim 5,
The method of providing vehicle route guidance service, characterized in that the shaded area is sensed based on unique identification information received from an information signal disposed at an entrance to the shaded area. According to claim 10,
Further receiving fixed GPS information from the information signal, and calculating a current location of the vehicle based on the fixed GPS information. A computer-readable recording medium recording a program for executing the method according to any one of claims 1 and 3 to 11. In a vehicle AVN (Audio Video Navigation) system providing a vehicle route guidance service,
a storage unit for maintaining Global Positioning System (GPS)-based map information;
a controller for stopping the GPS-based route guidance service and automatically switching to an infrastructure-based route guidance service when a shaded area is detected while providing the GPS-based route guidance service using the GPS-based map information; and
A wireless communication unit receiving information from the Bluetooth beacon transmitter disposed in the shadow area and receiving map information of the shade area for the infrastructure-based road guidance service from an information providing server.
Including,
The shaded area map information includes 3D map information including modeling information on a 3D structure of the shaded area and information about a Bluetooth beacon transmitter disposed in the shaded area,
The Bluetooth beacon transmitter disposed in the shaded area includes a Bluetooth beacon transmitter disposed at the entrance of a parking lot,
Based on the control unit detecting the negative area and receiving the information including location information about an empty parking space from a Bluetooth beacon transmitter disposed at the entrance of the parking lot, the shaded area map information is displayed instead of the GPS-based map information. to provide a three-dimensional road guidance service to the vacant parking space on the floor where the vacant parking space exists,
The shaded area map information is received through a user terminal wired or wirelessly connected to the vehicle AVN system.
Vehicle AVN system. delete According to claim 13,
The shaded area map information includes access connection road information corresponding to the shaded area, area and direction information in which a vehicle can proceed within the shaded area, entry location information corresponding to the shaded area, and vehicle height capable of passing through the shaded area. A vehicle AVN system, further comprising at least one of information. According to claim 15,
The vehicle AVN system of claim 1 , wherein the information about the Bluetooth beacon transmitter includes at least one of unique identification information, transmission power intensity information, and location information disposed in the shadow area. According to claim 16,
When the vehicle enters the detected shadow area, the control unit calculates the current location of the vehicle based on the strength of the signal received from the Bluetooth beacon transmitter, and controls the calculated current location to be displayed on the screen , vehicle AVN system. According to claim 17,
The controller measures RSSI (Received Signal Strength Indicator) of at least one Bluetooth beacon transmitter, determines a predefined range or level corresponding to at least one measured RSSI value, and determines at least one of the determined range or A vehicle AVN system for calculating a current location of the vehicle based on a level. According to claim 18,
Further comprising a driving information collection unit for obtaining current driving state information of the vehicle through the in-vehicle communication network;
The vehicle AVN system, wherein the control unit corrects the calculated current location of the vehicle using the driving state information. According to claim 19,
The vehicle AVN system of claim 1 , wherein the driving state information includes at least one of driving speed information, steering information, and holding time. delete According to claim 17,
The wireless communication unit receives unique identification information from an information signal disposed at an entrance to the shaded area,
The vehicle AVN system, wherein the control unit detects that the vehicle has entered the shaded area based on the unique identification information. The method of claim 22,
wherein the control unit further receives fixed GPS information from the information signal through the wireless communication unit, and calculates a current location of the vehicle based on the fixed GPS information. A vehicle route guidance service providing system for providing a vehicle route guidance service,
a vehicle AVN system installed inside the vehicle and providing a GPS-based route guidance service using GPS (Global Positioning System)-based map information stored in advance to a user-input destination;
a Bluetooth beacon transmitter disposed in a shadow area and transmitting a beacon signal necessary for determining the current location of the vehicle; and
An information providing server that provides map information of the shaded area corresponding to the shaded area according to the request of the vehicle AVN system.
including,
The shaded area map information includes 3D map information including modeling information on a 3D structure of the shaded area and information about a Bluetooth beacon transmitter disposed in the shaded area,
The Bluetooth beacon transmitter includes a Bluetooth beacon transmitter disposed at the entrance of a parking lot,
The vehicle AVN system is responsible for detecting the shaded area while providing a GPS-based route guidance service using the GPS-based map information and receiving the information including location information on an empty parking space from a Bluetooth beacon transmitter disposed at the entrance of the parking lot. stops the GPS-based road guidance service, automatically switches to an infrastructure-based road guidance service using the shaded area map information, and outputs the shaded area map information on the screen instead of the GPS-based map information, A vehicle route guidance service providing system for providing a three-dimensional road guidance service to an empty parking space on a floor where a parking space exists.

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