JP4866907B2 - Apparatus and method for collecting traffic information using broadcast network - Google Patents

Description

  The present invention relates to an apparatus and method for collecting traffic information.

  While the number of vehicles on the road is increasing gradually, no roads have been developed to accommodate the increased number of vehicles. As a result, serious traffic congestion occurs and the traffic environment deteriorates.

  In order to overcome this problem, traffic facilities and intelligent transport systems (ITS) for efficiently controlling traffic flow have been developed.

  Examples of ITS include advanced traffic management systems (ATMS) for real-time traffic control, advanced public transportation systems (APTS) for providing traffic information to the public, cargo and cargo Commercial Vehicle Operations Management System (CVO) for managing vehicles, Advanced Vehicle & Highway Systems for expanding the driver's field of view and notifying the driver of road conditions ), Advanced Traveler Information Systems (ATIS) for providing traffic information.

  The basic function of ATIS is to collect traffic information. In order to collect traffic information, a loop detector, an image detector, an ultrasonic detector, an AVL (Automatic Vehicle Location), a mobile phone, and a GPS (Global Positioning System) probe vehicle on the road are used.

  Among the above, the probe vehicle collects traffic information using mainly five methods described below.

  In the first method, traffic information is collected by detecting a probe vehicle that continuously transmits its own position using a beacon or RFID (Radio Frequency Identification).

  In the second method, traffic information is collected through a transceiver embedded in a road surface using an electronic tag mounted on a probe vehicle.

  In the third method, traffic information is collected through a wireless transmission / reception tower installed at a stop when a public transport vehicle or a commercial vehicle arrives at a stop.

  In the fourth method, traffic information is collected by tracking the position of a mobile phone through a base station mounted on the mobile phone and measuring the communication time.

  In the fifth method, traffic information is collected using a GPS receiver mounted on a probe vehicle and transmitted to a traffic center through a mobile communication channel.

  However, when collecting traffic information using a probe vehicle, there is a problem that the probe vehicle is not generalized, a problem that it is difficult to acquire traffic information in an area where the probe vehicle is not moving, a traffic information collection device There is a problem that it is difficult to obtain traffic information in an area where the traffic information is not installed, and there is a problem that additional costs are required for managing the traffic information because the traffic information can be obtained from many areas.

  In order to solve such problems, the present invention provides an apparatus and method for collecting traffic information in a specific time zone in a specific area in real time using a broadcast network.

  According to one aspect of the present invention, there is provided a traffic information collection device that is mounted on a running vehicle and collects traffic information. The traffic information collection device includes a receiving unit that receives a traffic information request message for requesting information about a traffic situation in a specific region and a specific time zone through a broadcasting network, and a vehicle that has received the traffic information request message is within the range of the specific region. Including a determination unit that determines whether or not the vehicle exists, an information collection unit that collects traffic information of a specific region in a specific time zone when the position of the vehicle is within the range of the specific region, and collected traffic information A transmission unit for transmitting the traffic information response message.

  According to another aspect of the present invention, a traffic information collecting method is provided. The traffic information collecting method includes a step of transmitting a traffic information request message requesting information on traffic conditions in a specific region and a specific time zone to a given vehicle through a broadcasting network, and a vehicle receiving the traffic information request message is in a specific region. The traffic information in a specific time zone in a specific area and transmitting a traffic information response message including the collected traffic information.

  The present invention can collect traffic information in real time and provide it to users (general users, telematics service centers, etc.) who use the collected traffic information whenever a user who uses the traffic information requests. .

  In addition, the present invention can manage the overload of the center server that manages the traffic information by controlling the network traffic of the system that collects the traffic information by limiting the time and place where the traffic information is collected.

  In addition, the content provider (CP) that collects current traffic information reduces the cost of operating facilities such as probe vehicles and fixed traffic information collectors, thereby reducing the maintenance cost required to collect traffic information. Can provide low-cost and high-quality traffic information.

  Furthermore, the present invention can collect additional vehicle-related information such as traffic information, weather information, and POI (Places of Interest) in real time.

  The present invention will be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. However, the invention may be embodied in many different embodiments and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

  FIG. 1 is a block diagram of a system for collecting and providing traffic information using a broadcast network according to an embodiment of the present invention. Referring to FIG. 1, the system includes a content provider 100, a traffic information processing center 110, a DMB (Digital Multimedia Broadcasting) center 120, and a traffic information user 130.

  The content provider 100 collects and manages information including a loop detector installed on a road on which the vehicle travels, a vehicle speed obtained through a traffic camera, road surface information, traffic volume, and accident information.

  The traffic information processing center 110 processes traffic information and redundant data not previously known included in the traffic information collected by the content provider 100, selects necessary traffic information from the processed traffic information, and selects The stored traffic information is stored, and the stored traffic information is updated.

  The traffic information processing center 110 may be, for example, a telematics service center (TSP).

  Telematics means using a mobile phone or personal digital assistant (PDA) inside a car or other vehicle equipped with a global positioning system (GPS) receiver or geographic information system (GIS) receiver. This means a technology using radio that provides navigation information to the driver and informs the driver of traffic information in real time. The TSP can provide selected traffic information to a vehicle equipped with a telematics device.

  The DMB center 120 transmits the traffic information processed by the traffic information processing center 110 through a broadcast network.

  The traffic information user 130 receives traffic information from the DMB center 120 using a telematics terminal.

  FIG. 2 is a block diagram of a system for collecting traffic information through a broadcasting network using the portable terminal 200 according to an embodiment of the present invention. Referring to FIG. 2, the system includes a user 230 who uses traffic information, a telematics service center (TSP) 210, a DMB center 220, and a vehicle 230 equipped with a telematics terminal.

  The portable terminal 200 may be a mobile radio terminal used to request traffic information in a specific area, such as a mobile phone, a PDA, a DMB terminal, a telematics terminal.

  A user who uses traffic information requests the TSP 210 for information on the current traffic situation in a specific area using the portable terminal 200.

  The TSP 210 determines whether the processed traffic information requested by the user using the traffic information and received from the content provider 100 includes information on the current traffic situation, and the processed traffic information is the current traffic information. When the traffic situation information is not included, the TSP 210 determines whether or not the current traffic situation information can be obtained from the content provider 100.

  If it is determined that the current traffic situation information cannot be obtained from the TSP 210, the TSP 210 transmits a traffic information request message requesting the current traffic situation information of the specific area to the DMB center 220.

  The DMB center 220 sends a traffic information request message to the vehicle 230 in which the telematics terminal is currently turned on through a digital broadcasting network (including terrestrial and satellite waves).

  The vehicle 230 on which the telematics terminal is mounted analyzes the received traffic information request message. When the vehicle 230 belongs to a specific area for which traffic information is requested by a user using the traffic information, the vehicle 230 collects traffic information including the speed of the vehicle 230, road surface information, etc. The information is transmitted to the TSP 210 through the digital network center or transmitted to the user 200 who has requested the traffic information through the mobile communication network.

  FIG. 3 is a block diagram of an apparatus 300 for collecting traffic information according to an embodiment of the present invention. Referring to FIG. 3, an apparatus that is mounted on a vehicle and collects information about traffic conditions includes a reception unit 310, a determination unit 320, an information collection unit 330, and a transmission unit 340.

  The receiver 310 receives a traffic information request message for requesting information on traffic conditions in a specific area and a specific time zone through a broadcast network.

  When a user who uses traffic information requests traffic information from the traffic information processing center 110 (for example, telematics service center) through a portable terminal, the traffic information processing center 110 has no traffic information. The center 110 transmits a traffic information request message to the DMB centers 120 and 220, and the DMB center 120 and 220 sends the traffic information request message to a vehicle on which the device 300 that collects traffic information is mounted through a broadcast network.

  The vehicle in which the device 300 is mounted receives a traffic information request message through the receiving unit 310 when the device 300 that collects traffic information is operating.

  The receiving unit 310 includes an authority setting unit 311 that determines whether the vehicle that has received the traffic information request message has authority to respond to the request.

  If the authority setting unit 311 determines that the vehicle that has received the traffic information request message does not have a response authority to receive the traffic information request message based on the authority restriction code set in the traffic information request message, the traffic information The request message is discarded.

  The authority setting unit 311 will be described later in detail with reference to FIG.

  When the authority setting unit 311 determines that the vehicle that has received the traffic information request message has the response authority, the determination unit 320 uses the global positioning system (GPS) that can determine the position of the vehicle to obtain the traffic information. It is determined whether or not the vehicle equipped with the collecting device 300 is within the specific area requested by the user using the traffic information.

  When it is determined that the vehicle equipped with the device 300 that collects traffic information is within the range of the specific area requested by the user using the traffic information, the information collection unit 330 uses GPS, sensors, etc. A system that collects traffic information by collecting traffic information including vehicle position information, vehicle speed, acceleration, engine speed, accident information, traffic volume, etc. at a specific time zone included in the traffic information request message. Control network traffic.

  The transmission unit 340 includes a transmission confirmation unit 341 that confirms that a traffic information response message including the traffic information collected by the information collection unit 330 is transmitted.

  When the transmission confirmation unit 341 confirms that the traffic information response message is transmitted, the transmission unit 340 transmits the traffic information response message to the user who uses the traffic information using the mobile communication network, or the content provider. 100 or traffic information processing center 110 (for example, TSP).

  FIG. 4 is a block diagram of an apparatus for collecting traffic information according to another embodiment of the present invention. Referring to FIG. 4, the apparatus for collecting traffic information is embodied as a telematics terminal 400, although not necessarily limited thereto. Various changes in form and detail can be made in a device that collects traffic information without departing from the spirit and scope of the present invention.

  The telematics terminal 400 includes a broadcast receiving module 402 for receiving a traffic information request message through a broadcast network. The telematics terminal 400 determines whether the communication security manager 412 has the authority to respond to the traffic information request message received by the broadcast receiving module 402, and the telematics terminal 400 When it is determined that 412 has the authority to respond to the traffic information request message, the traffic information message processor 411 determines whether the vehicle on which the telematics terminal 400 is mounted belongs to the specific area.

  When the traffic information message processor 411 determines that the vehicle on which the telematics terminal 400 is mounted belongs to a specific area, the telematics terminal 400 uses the vehicle information collection interface 420, the GPS 431, or the collection Using the sensor 432, traffic information including vehicle position information, vehicle speed, acceleration, engine speed, accident information, traffic volume, etc. is collected at a specific time zone indicated by the traffic information request message.

  The communication security manager 412 generates a traffic information response message based on the traffic information collected by the telematics terminal 400 in response to the traffic information request message. That is, the broadcast receiving module 402 has A1, A2, A3. . . The communication security manager 412 receives the traffic information request message A1, A2, A3. . . , And the vehicle equipped with the telematics terminal 400 receives a traffic information request message A1, A2, A3. . . When it is within the specific area range requested by the traffic request message, the communication security manager 412 corresponds to the traffic information response message B1 corresponding to A1, the traffic information response message B2 corresponding to A2, and A3. The traffic information response message B3 can be managed.

  When the traffic information message processor 411 is permitted to transmit the traffic information response message, the traffic information message processor 411 sends the traffic information response message directly to the user using the traffic information using the mobile communication network. Or transmitted to the content provider 100 or the traffic information processing center 110 (for example, TSP) using a broadcast network.

  FIG. 5 is a block diagram of a traffic information request message 500 according to an embodiment of the present invention. Referring to FIG. 5, a traffic information request message 500 is used to request a vehicle equipped with a device for collecting traffic information to collect traffic information in a specific area and a specific time zone through a broadcasting network. The

  The traffic information request message 500 includes an origin ID 510 for identifying the origin of the traffic information request, a specific area range 520 for obtaining traffic information, a specific time section 530 for obtaining traffic information, a legitimate right It includes an authority restriction code 540 for determining whether the source has received the traffic information request message 500.

  The origin ID 510 identifies the origin of the traffic information request message 500 so that the traffic information request message 500 can be classified. Further, the origin ID 510 is used as a destination to which the collected traffic information is transmitted.

  The specific area range 520 is a traffic area requested by the user who uses the traffic information, and is a traffic area where the traffic information is mounted. The traffic information for this traffic area is not acquired by the Telematics Service Center (TSP) that stores the traffic area information and updates the stored traffic area information to build the database.

  That is, a user who uses traffic information requests traffic information from the traffic information processing center 110 (for example, TSP), but the database constructed by the traffic information processing center 110 has traffic requested by the user who uses traffic information. When there is no information, the traffic information processing center 110 transmits a traffic information request message 500 including the range 520 of the specific area through the broadcast network.

  The specific time section 530 is used to prevent overloading of the traffic information collection process due to continuous traffic information collection by instructing the traffic information collecting device to collect the traffic information of the specific time section. .

  The authority restriction code 540 is used to determine whether or not a user having a legitimate authority has received a traffic information request message. The authority setting unit 311 determines whether to discard the traffic information request message 500 based on the authority restriction code 540 included in the traffic information request message 500.

  The authority restriction code 540 is used to restrict an unauthorized user from accessing the traffic information request message. The traffic information request message is an ID of a portable terminal that requests traffic information. It is because it contains personal information.

  The authority restriction code 540 is replaced with or used in parallel with a CAM (Conditional Access Module) or CAS (Conditional Access System) used in a pay broadcast network.

  FIG. 6 is a block diagram of a traffic information request message according to another embodiment of the present invention. Referring to FIG. 6, the traffic information request message includes a message start 610, authority restriction code information 620, message ID 630, collection time information 640, received contact information 650, traffic information 660, and message end 690.

  Message start 610 and message end 690 indicate the start and end of a traffic information request message, respectively. The message ID 630 is used for identifying the traffic information request message. The reception contact 650 is a contact where the traffic information is requested, and is used to transmit the collected traffic information.

  The collection time information 640 includes a time zone that the user who uses the traffic information wants to know. The traffic information 660 includes a traffic information code 661 that is a code that classifies traffic situation information about vehicle speed, road surface information, accident information, and the like, and position information that indicates a traffic area where the user who uses the traffic information wants to know the traffic information. 662 includes a collection range 663 for collecting traffic information from a plurality of vehicles in order to improve the accuracy of the collected traffic information.

  FIG. 7 is a block diagram of a traffic information response message 700 according to an embodiment of the present invention. Referring to FIG. 7, a traffic information response message 700 that is a message in response to a traffic information request message is an identification ID 710 that identifies a device that receives the traffic information request message and responds to the traffic information request message, and collected traffic information 720. , And sender information 730 indicating the transmitter transmitting the traffic information request message.

  The identification ID 710 is generated based on the origin ID of the traffic information request message, used to classify the device that receives the traffic information, and the traffic information response message 700 that responds to the traffic information request message based on the classified device. Identify.

  The traffic information 720 is traffic information collected by the information collection unit 330.

  The sender information 730 is information about the traffic information user who requested the traffic information, or information about the traffic information processing center 110 (for example, TSP), and serves as a destination address for transmitting the traffic information response message 700. Bear.

  The return channel used to transmit the traffic information response message 700 can be a bidirectional communication such as a text message, TCP / IP using mobile communication, a wireless LAN, or a mobile Internet developed in the future.

  FIG. 8 is a block diagram of a traffic information response message 800 according to another embodiment of the present invention. The traffic information response message 800 includes a message start 810, a terminal ID 820, collection time information 830, traffic information 840, and a message end 890.

  Message start 810 and message end 890 indicate the start and end of a traffic response message, respectively. The terminal ID 820 is used to identify a device that collects traffic information.

  The traffic information 840 includes a message ID 841, a traffic information code 842, position information 843, and collected traffic information 844. Message ID 841 is used to identify traffic information response message 800. The traffic information code 842 is used to classify collected traffic situation information including vehicle speed, road surface information, accident information, and the like. The position information 843 indicates the traffic area requested by the user who uses the traffic information.

  FIG. 9 is a flowchart illustrating a method for collecting traffic information according to an embodiment of the present invention. Referring to FIG. 9, when the traffic information processing center 110 transmits a traffic information request message to the broadcasting center to complement the traffic information that is requested by the user who uses the traffic information and is currently unknown, The broadcast network transmits a traffic information request message to an arbitrary vehicle (S910). This traffic information request message requests information on traffic conditions in a specific area and a specific time zone.

  It is determined whether the vehicle that has received the traffic information request message has the authority to respond to the traffic information request message based on the authority restriction code in the traffic information request message (S920, S930). When it is determined that the vehicle that has received the traffic information request message is authorized to respond to the traffic information request message, the vehicle that has received the traffic information request message exists within the specific area range 520 included in the traffic information request message. It is determined whether or not to perform (S940).

  When it is determined that the vehicle that has received the traffic information request message exists in the specific area range 520, the traffic information in the specific area range 520 of the specific time section 530 is collected (S950).

  It is determined whether or not the collected traffic information is transmitted (S960). When it is determined that the collected traffic information is transmitted, a traffic information response message is generated and transmitted (S970, S980).

  The present invention can also be embodied as computer readable codes on a computer readable recording medium. The computer-readable recording medium includes any data storage device that can store data read by a computer system. Examples of computer readable recording media include read only memory (ROM), random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and carrier wave. . The computer-readable recording medium can be distributed via a network coupled to the computer system, and the computer-readable code is stored and executed in a distributed manner.

  Although the invention has been shown and described with reference to exemplary embodiments, various changes in form and detail may be made without departing from the spirit and scope of the invention as set forth in the claims. It will be appreciated by those skilled in the art that this is possible.

1 is a block diagram of a system for collecting and providing traffic information using a broadcast network according to an embodiment of the present invention. 1 is a block diagram of a system for collecting traffic information using a broadcast network according to an embodiment of the present invention. It is a block diagram of the traffic information collection device concerning one embodiment of the present invention. It is a block diagram of the traffic information collection device concerning other embodiments of the present invention. It is a block diagram of a traffic information request message according to an embodiment of the present invention. It is a block diagram of the traffic information request message which concerns on other embodiment of this invention. It is a block diagram of a traffic information response message according to an embodiment of the present invention. It is a block diagram of the traffic information response message which concerns on other embodiment of this invention. It is a flowchart which shows the traffic information collection method which concerns on one Embodiment of this invention.

Claims (6)

A device that is installed in any vehicle in operation and collects traffic information.
A reception unit that receives a traffic information request message for requesting information on traffic conditions in a specific time zone in a specific area through a broadcast network, the specific area storing traffic area information, and stored traffic area information A receiver that is an area where traffic information was not acquired by the Telematics Service Center that builds a database by updating
A determination unit that determines whether a vehicle that receives the traffic information request message exists in the range of the specific area;
An information collecting unit that collects traffic information in the specific time zone of the specific area when the vehicle is in the range of the specific area;
A transmission unit that transmits the collected traffic information and a traffic information response message including information for identifying a device that collects the traffic information through a broadcast network or a mobile communication network, and
The receiving unit includes an authority setting unit that determines whether the receiving unit has an authority to respond to the traffic information request message after receiving the traffic information request message;
The transmission unit includes a transmission confirmation unit that confirms whether or not the traffic information response message should be transmitted . The traffic information request message is:
An origin ID identifying the origin of the traffic information request;
Specific areas where you want to get traffic information,
A specific time interval that indicates when to get traffic information,
The apparatus according to claim 1, further comprising: an authority restriction code for determining whether or not a person having a legitimate authority receives the traffic information request message. The traffic information response message is:
Traffic information collected by the information collection unit;
Information of the transmitter that transmitted the traffic information request message;
The apparatus according to claim 1, further comprising: an identification ID that identifies the apparatus that receives the traffic information request message and responds to the traffic information request message. A method of collecting traffic information,
A step of transmitting a traffic information request message requesting information on traffic conditions in a specific area and a specific time zone to an arbitrary vehicle through a broadcasting network, the specific area storing and storing the traffic area information; A region where traffic information was not acquired by a telematics service center that updates traffic region information and builds a database;
Determining whether the vehicle that has received the traffic information request message is authorized to respond to the traffic information request message;
Collecting the traffic information of the specific area and the specific time zone when the vehicle that has received the traffic information request message exists in the specific area when it is determined to have the authority;
Checking whether to transmit a traffic information response message including the collected traffic information and information identifying the vehicle ;
Transmitting the traffic information response message through a broadcast network or a mobile communication network. The traffic information request message is:
An origin ID identifying the origin of the traffic information request;
Specific areas where you want to get traffic information,
A specific time interval that indicates when to get traffic information,
5. A method according to claim 4 , further comprising an authority restriction code for determining whether a person having a legitimate authority receives the traffic information request message. The traffic information response message is:
Traffic information collected by the collecting step;
Information of the transmitter that transmitted the traffic information request message;
5. The method of claim 4 , further comprising: an identification ID that identifies the device that receives the traffic information request message and responds to the traffic information request message.

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