JP2009020007A - On-vehicle navigation device and on-vehicle navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To use a travel record of a car travel for predicting future traffic congestion and learning the route, when a user travels in the car which is not the vehicle owned by the user. <P>SOLUTION: An on-vehicle navigation device 1, on receiving a travel record obtained by a mobile telephone 17, specifies a traveling route of the mobile phone 17 by matching the received travel record to a candidate road, registers the travel record of the mobile telephone 17 on the travel route to a congestion predicting datebase 7a and route learning database 7b, and performs the congestion prediction and route learning by reading the congestion prediction data and route learning data in which the travel record of the mobile telephone 17 is registered. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an in-vehicle navigation device and an in-vehicle navigation system that output a traffic jam prediction result obtained by reading traffic jam prediction data and a traffic jam prediction result and a route learning data obtained by reading route learning data and performing a route learning.

As a mode in which the in-vehicle navigation device acquires information from the outside, for example, there is a configuration in which probe information is received and acquired from a center device, and a configuration in which telephone number information is received from a mobile phone (see, for example, Patent Documents 1 and 2) ).
JP 2002-251698 A JP 2006-184108 A

  By the way, when the user travels with a vehicle other than an automobile owned by the acquaintance, such as an automobile owned by an acquaintance, a taxi or a bus (private car), the road on which the vehicle has traveled is a convenient road that the vehicle does not know. If so, there is a desire to register the travel history of the vehicle in an in-vehicle navigation device installed in the car owned by the vehicle and to use it for future traffic jam prediction and route learning. However, those described in Patent Documents 1 and 2 cannot meet the above-mentioned demand.

  The present invention has been made in view of the above-described circumstances, and its purpose is to use a travel history of a vehicle when the user moves with a vehicle other than an automobile owned by the user for future traffic jam prediction and route learning. An object of the present invention is to provide an in-vehicle navigation device and an in-vehicle navigation system that can be utilized and can improve convenience.

  According to the in-vehicle navigation device of the first aspect, when the movement history acquisition unit acquires the movement history representing the movement history of the external terminal from the external terminal, the movement route specifying unit acquires the movement acquired by the movement history acquisition unit. The history map is matched with the candidate road to identify the travel route on which the external terminal has moved, and the control means stores the travel history of the external terminal on the travel route identified by the travel route identification means in the traffic jam prediction data storage means. Is registered in the traffic jam prediction data, the traffic jam prediction data in which the movement history of the external terminal is registered is read out to make a traffic jam prediction, and the traffic jam prediction result of the traffic jam prediction is output from the output means.

  Thereby, when the user acquires a movement history moved by a vehicle other than the car (private vehicle) owned by the user by the external terminal, and then transfers the movement history acquired by the external terminal to the in-vehicle navigation device, the transfer is performed. The registered travel history is registered in the traffic jam prediction data, and the traffic jam prediction data in which the travel history is registered is read to perform traffic jam prediction, so the vehicle when the user moves with a vehicle other than his own car It is possible to utilize the travel history of the vehicle for future traffic jam prediction and route learning, and to improve convenience.

  According to the in-vehicle navigation device of the second aspect, the control means sets the use condition for using the movement history of the external terminal, and when the use condition is satisfied, the traffic jam prediction data in which the movement history of the external terminal is registered. To predict traffic congestion. As a result, for example, when the destination is the same or when the date and time are close, by setting the use conditions in advance, the car owned by the user only when the destination is the same or the date and time is close It is possible to use the travel history of the vehicle traveled by a vehicle other than the vehicle for future traffic jam prediction and route learning.

  According to the in-vehicle navigation device of the third aspect, when the movement history acquisition unit acquires the movement history representing the history of movement of the external terminal from the external terminal, the movement route specifying unit acquires the movement acquired by the movement history acquisition unit. The history map is mapped to the candidate road to identify the travel route on which the external terminal has moved, and the control means stores the travel history of the external terminal on the travel route identified by the travel route identification means in the route learning data storage means. The route learning data is registered in the route learning data, the route learning data in which the movement history of the external terminal is registered is read out, the route learning is performed, and the route learning result of the route learning is output from the output unit.

  Thereby, when the user acquires a movement history moved by a vehicle other than the car (private vehicle) owned by the user by the external terminal, and then transfers the movement history acquired by the external terminal to the in-vehicle navigation device, the transfer is performed. The registered movement history is registered in the route learning data, and the route learning data in which the movement history is registered is read to perform route learning. It is possible to make the travel history traveled by be utilized for future route learning and route learning, and to improve convenience.

  According to the in-vehicle navigation device described in claim 4, the control means sets the use condition for using the movement history of the external terminal, and when the use condition is satisfied, the route learning data in which the movement history of the external terminal is registered. To learn the route. As a result, for example, when the destination is the same or when the date and time are close, by setting the use conditions in advance, the car owned by the user only when the destination is the same or the date and time is close It is possible to use the travel history of the vehicle traveled by a vehicle other than the vehicle for future route learning and route learning.

  According to the in-vehicle navigation device described in claim 5, when there are a plurality of candidate roads, the movement route specifying means maps the movement history acquired by the movement history acquisition means to the candidate road selected by the user among the plurality of candidate roads. The movement route that the external terminal has moved by matching is specified. Thus, for example, even in an area where a highway and a general road are laid side by side, a vehicle other than an automobile owned by the user is obtained by performing map matching on the candidate road selected by the user. It is possible to appropriately utilize the travel history of the vehicle traveled when traveling at the time of future traffic jam prediction and route learning.

  According to the in-vehicle navigation system described in claim 6, in the same manner as described in claims 1 and 2, the travel history of the vehicle traveled when the user moved by a vehicle other than the car owned by the user. Can be used for future traffic jam prediction and route learning, and convenience can be improved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram showing the overall configuration of an in-vehicle navigation system. The in-vehicle navigation device 1 includes a control unit 2 (movement route specifying means and control means in the present invention), a position detector 3, a map data input device 4, an operation switch group 5, a transceiver 6, a storage device 7, and a display device 8. (Output means in the present invention), a voice controller 9, a voice recognition unit 10, a remote control sensor 11, and a mobile phone connection unit 12 are provided.

  The control unit 2 includes a CPU, a RAM, a ROM, and an I / O bus, and executes a control program to control the operation of the entire apparatus. The position detector 3 includes a G sensor 3a, a gyroscope 3b, a distance sensor 3c, and a GPS receiver 3d, and these components have detection errors having different properties. The control unit 2 detects (identifies) the current position of the host vehicle by complementing the detection signals input from these components. In this case, the position detector 3 does not have to include all these components as long as the current position of the host vehicle can be detected with the required detection accuracy, and a steering sensor for detecting the steering angle of the steering wheel A wheel sensor that detects the rotation of each wheel may be combined.

  The map data input device 4 is loaded with a recording medium such as a CD-ROM, DVD-ROM, memory card or HDD, and inputs road data, landmark data, and map matching data. The operation switch group 5 includes mechanical switches arranged around the display device 8 and touch switches formed on the display device 8. For example, the operation content (for example, menu display selection, destination setting, route search) performed by the user. , Route guidance start, display screen change, volume adjustment, etc.) are detected and output to the control unit 2.

  The transceiver 6 receives VICS (registered trademark) information from the center device 13 via the communication network. The storage device 7 includes a traffic jam prediction database 7a (congestion prediction data storage means in the present invention) for storing traffic jam prediction data and a route learning database 7b (route learning data storage means in the present invention) for storing route learning data. It is prepared for. The traffic jam prediction data is data representing the degree of traffic jam for each time zone of each road, and is used when calculating the estimated arrival time and route cost. The route learning data is data for preferentially setting the road as a route candidate when the next route search is performed by storing the road information of the road on which the vehicle actually traveled. This is the data used when doing it. In this case, when performing route guidance, the control unit 2 reads out the traffic jam prediction data stored in the traffic jam prediction database 7a, performs traffic jam prediction, and causes the display device 8 to display the traffic jam prediction result of the traffic jam prediction. Alternatively, the route learning data stored in the route learning database 7b is read to perform route learning, and the route learning result of the route learning is displayed on the display device 8.

  The display device 8 is composed of, for example, a color liquid crystal display, displays various display screens such as a menu display selection screen, and superimposes a current position mark indicating the current position of the host vehicle and a driving locus on a map of map data. To display. The display device 8 may be composed of an organic EL, a plasma display, or the like.

  The voice controller 9 controls the operation of the voice recognition unit 10 and outputs, for example, route guidance guidance or warning guidance from the speaker 14. The voice recognition unit 10 recognizes the voice input by the microphone 15 according to a voice recognition algorithm. The remote control sensor 11 outputs an operation signal received from the operation remote controller 16 to the control unit 2.

  The mobile phone connection unit 12 has, for example, a Bluetooth communication function. A mobile phone with a GPS function (hereinafter referred to as a mobile phone) 17 (an external terminal in the present invention) can acquire a movement history using the GPS function and has, for example, a Bluetooth communication function. When in the Bluetooth communication range formed by the connection unit 12, the Bluetooth connection link is established with the mobile phone connection unit 12 to perform Bluetooth communication, and the acquired movement history is transmitted to the mobile phone connection unit 12. It is configured.

  The control unit 2 described above uses, for each function, a map data acquisition unit that acquires map data, the current position of the host vehicle, and road data included in the map data acquired by the map data acquisition unit. The map matching unit that identifies the road where the current position of the host vehicle exists, the route search unit that searches for the route from the current position of the host vehicle specified by the map matching unit to the destination set by the user, and the route search unit search Route guidance unit that calculates the necessary points for route guidance based on the road data included in the route and map data and the location data of the intersection, etc., the map around the current position of the vehicle and the highway The image forming apparatus includes a drawing unit that draws a schematic diagram and an enlarged view near an intersection. The in-vehicle navigation device 18 and the mobile phone 17 constitute an in-vehicle navigation system 18.

  Next, the operation of the above configuration will be described with reference to FIGS. Here, for example, the user moves on a vehicle other than an automobile owned by an acquaintance, such as an automobile owned by an acquaintance, a taxi or a bus, and moves by operating the mobile phone 17 at that time. A description will be given on the assumption that a history is acquired.

(1) Processing Performed by Mobile Phone 17 First, processing performed by the mobile phone 17 will be described with reference to FIG.
The mobile phone 17 monitors whether or not the user has performed a movement history acquisition start operation (step S1). Here, when it is determined that the user has performed a movement history acquisition start operation by operating a predetermined key, for example ("YES" in step S1), it is monitored whether or not it is time to detect the current position. It is monitored whether or not the user has performed a movement history acquisition end operation (steps S2 and S3).

  Next, when it is determined that it is time to detect the current position (“YES” in step S2), the mobile phone 17 calculates various parameters of the GPS signal received from the GPS satellite and detects the current position (step S4) The time at which the current position is detected is detected as the current time (step S5), the correspondence between the detected current position and the current time is stored as movement data (step S6), and the above-described steps S2, S3 Return to.

  That is, the cellular phone 17 repeats the above process every time the current position is detected until the user performs the movement history acquisition end operation after the user performs the movement history acquisition start operation. A plurality of movement data is stored in time series. When the mobile phone 17 determines that the user has performed the movement history acquisition end operation ("YES" in step S3), the mobile phone 17 moves a movement data group composed of a plurality of movement data stored at that time. This is stored as a history (step S7), and a series of processing ends. The mobile phone 17 can store a plurality of movement histories each time the user performs a movement history acquisition start operation and acquisition end operation.

(2) Processing Performed by In-vehicle Navigation Device 1 Next, processing performed by the in-vehicle navigation device 1 will be described with reference to FIGS. 3 and 4.
In the in-vehicle navigation device 1, the control unit 2 monitors whether or not a movement history is received from the mobile phone 17 when the power is on (step S <b> 11). Here, when the user carries the mobile phone 17 and gets in, and the mobile phone 17 enters the Bluetooth communication area formed by the mobile phone connection unit 12, the mobile phone 17 and the mobile phone connection unit 12 establish a Bluetooth connection link. Bluetooth communication is then performed. In this case, the mobile phone 17 determines whether there is a movement history that has not been transmitted to the in-vehicle navigation device 1 at that time, for example, by referring to a transmission history that has transmitted its own movement history. When it is determined that there is a movement history that has not been transmitted to the vehicle-mounted navigation device 1, the corresponding movement history is transmitted (transferred) to the vehicle-mounted navigation device 1.

  When determining that the movement history is received from the mobile phone 17 (“YES” in step S11), the control unit 2 stores the first movement history, that is, the mobile phone 17 as shown in FIG. The movement history with the oldest date and time is superimposed on the map and displayed on the display device 8 (step S12). In FIG. 4A, the current position detected by the control unit 2 immediately after the user performs the movement history acquisition start operation is “S”, and immediately before the user performs the movement history acquisition end operation. The current position detected by the control unit 2 is “G”, and the route from “S” to “G” is the movement route acquired by the mobile phone 17.

  Next, as shown in FIG. 4B, the control unit displays a moving means input screen on the display device 8, waits for the user to perform an input operation of the moving means, and the user performs an input operation of the moving means. It is determined whether or not it has been performed (step S13). Here, the user inputs the moving means (for example, acquaintance's car, taxi, bus, etc.) when the mobile phone 17 stores the movement history.

Next, when the control unit 2 determines that the user has performed an input operation on the moving means (“YES” in step S13), the road data recorded on the recording medium on which the map data input device 4 is mounted. , The candidate roads that are subject to map matching with the movement history received from the mobile phone 17 are extracted (step S14), and it is determined whether there are a plurality of extracted candidate roads (step S15). Here, the control unit 2 does not include an area where, for example, a highway and a general road are laid in parallel in the movement history received from the mobile phone 17, the extracted candidate road Is not plural, that is, it is determined that the extracted candidate road is singular (“NO” in step S15), the movement history is map-matched with the extracted candidate road to identify the movement route (step S16). ).

  Next, as shown in FIG. 4C, the control unit 2 displays a usage condition input screen on the display device 8, waits for the user to input the usage conditions, and the user enters the usage conditions input operation. Whether or not has been performed is determined (step S17). Here, the user inputs usage conditions (for example, priority when the destination is the same, priority when the date and time are near, priority at any time) with the mobile phone 17. This use condition is a condition as to whether or not to use the travel history that the user intends to register this time when performing traffic jam prediction or route learning.

  Next, when it is determined that the user has performed an input operation of the use conditions (“YES” in step S17), the control unit 2 sets the link travel time and the link cost (step S18), and the identified travel route The movement history of the mobile phone 17 is registered in the traffic jam prediction database 7a and the route learning database 7b (step S19). Then, the control unit 2 determines whether or not an unregistered movement history exists at that time (step S20), and determines that there is an unregistered movement history at that time (" YES ”), the next movement history, that is, the movement history stored next by the mobile phone 17 is superimposed on the map and displayed on the display device 8 (step S21), and the process returns to the above-described step S13. Repeat the above process. On the other hand, when determining that there is no unregistered movement history at that time (“NO” in step S20), the control unit 2 ends the series of processes.

  Thereafter, when the control unit 2 becomes in a situation that matches the usage conditions input by the user, for example, if the destination is the same or the date and time are close, the movement history of the mobile phone 17 is thus obtained. The traffic jam prediction data stored in the traffic jam prediction database 7a is read to perform traffic jam prediction, or the route learning data stored in the route learning database 7b is read to perform route learning.

  The control unit 2 includes, for example, an area in which a highway and a general road are laid in parallel in the movement history received from the mobile phone 17, and there are a plurality of extracted candidate roads. If it is determined (“YES” in step S15), the plurality of candidate roads are displayed on the display device 8 (step S22), and the user has performed a selection operation to select one of the plurality of candidate roads. If it is determined (“YES” in step S23), the movement history is map-matched with the candidate road selected by the user to identify the movement route (step S16), and the same processing is performed.

  As described above, according to the present embodiment, when the in-vehicle navigation device 1 receives the movement history acquired by the mobile phone 17, the mobile phone 17 moves by map-matching the received movement history to the candidate road. The movement route is specified, the movement history of the mobile phone 17 on the movement route is registered in the traffic jam prediction database 7a and the route learning database 7b, and the traffic jam prediction data and the route learning data in which the movement history of the mobile phone 17 is registered. Since it is configured to read and perform traffic jam prediction and route learning, it is possible to use the travel history of the vehicle when the user moves with a vehicle other than his own car for future traffic jam prediction and route learning. , Can increase convenience.

The present invention is not limited to the above-described embodiment, and can be modified or expanded as follows.
The external terminal is not limited to the mobile phone 17 with GPS function, but may be a mobile terminal having a position detection function.
The method of transferring the movement history from the mobile phone 17 to the in-vehicle navigation device 1 is not limited to Bluetooth communication, and may be other wireless communication or wired communication. Further, the movement history may be displayed as code information encoded by, for example, a one-dimensional code or a two-dimensional code, and the code information may be optically read by an imaging device such as a CCD sensor.
The movement history of the mobile phone 17 may be registered only in one of the traffic jam prediction database 7a and the route learning database 7b.

Functional block diagram showing an embodiment of the present invention Flow chart showing processing performed by mobile phone The flowchart which shows the processing which the in-vehicle navigation device performs Figure showing an example of the display screen

Explanation of symbols

  In the drawings, 1 is an in-vehicle navigation device, 2 is a control unit (movement route specifying means, control means), 7a is a congestion prediction database (congestion prediction data storage means), 7b is a route learning database 7b (route learning data storage means), Reference numeral 8 denotes a display device (output means), 17 denotes a mobile phone with an GPS function (external terminal), and 18 denotes an in-vehicle navigation system.

Claims (6)

Congestion prediction data storage means for storing traffic jam prediction data, and control means for reading out the traffic jam prediction data stored in the traffic jam prediction data storage means and predicting the traffic jam from the output means. An in-vehicle navigation device,
A movement history acquisition means for acquiring a movement history representing a movement history of the external terminal from the external terminal;
A travel route specifying means for map-matching a travel history acquired by the travel history acquisition means to a candidate road and specifying a travel route traveled by the external terminal;
The control means registers the movement history of the external terminal on the movement route specified by the movement route specifying means in the traffic congestion prediction data stored in the traffic congestion prediction data storage means, and the movement history of the external terminal is An in-vehicle navigation device characterized by reading registered traffic jam prediction data and performing traffic jam prediction. In the in-vehicle navigation device according to claim 1,
The control means sets a use condition for using the movement history of the external terminal, and when the use condition is satisfied, reads out the congestion prediction data in which the movement history of the external terminal is registered to perform a traffic jam prediction. An in-vehicle navigation device characterized by Route learning data storage means for storing route learning data; and control means for reading out the route learning data stored in the route learning data storage means and outputting the route learning result obtained by performing route learning from the output means. An in-vehicle navigation device,
A movement history acquisition means for acquiring a movement history representing a movement history of the external terminal from the external terminal;
A travel route specifying means for map-matching a travel history acquired by the travel history acquisition means to a candidate road and specifying a travel route traveled by the external terminal;
The control means registers the movement history of the external terminal on the movement route specified by the movement route identification means in the route learning data stored in the route learning data storage means, and the movement history of the external terminal An in-vehicle navigation device, wherein route learning is performed by reading registered route learning data. In the in-vehicle navigation device according to claim 3,
The control means sets a use condition for using the movement history of the external terminal, and reads the route learning data in which the movement history of the external terminal is registered to perform route learning when the use condition is satisfied. An in-vehicle navigation device characterized by In the in-vehicle navigation device according to any one of claims 1 to 4,
When there are a plurality of candidate roads, the movement route specifying means maps the movement history acquired by the movement history acquisition means to the candidate road selected by the user from among the plurality of candidate roads and moves the external terminal A vehicle-mounted navigation device characterized by specifying a route. The in-vehicle navigation device according to any one of claims 1 to 5,
An in-vehicle navigation system comprising: an external terminal that provides a movement history representing a history of movement to the in-vehicle navigation device.

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