JP2011137723A - Navigation device, route guidance method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique for performing guidance which facilitates traveling in accordance with a guidance route, even when there is a road provided with a carpool lane installed thereon. <P>SOLUTION: A navigation device 100 includes a current position calculation means for calculating the current position of a moving body; a recommended route search means for searching for a recommended route up to a destination; a guidance point setting means for setting guidance points in the recommended route; and a guidance information notification means for performing notification of predetermined guidance information, when the moving body reaches the set guidance points. In the road provided with the carpool lane, the guidance point setting means sets a guidance point where information on guidance from the road to a branch road is to be notified, before a guidance point to be set for each road where no carpool lanes are provided, when predetermined conditions are satisfied. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a navigation device, a route guidance method, and a program.

  In recent years, carpools have been recommended for the purpose of reducing traffic congestion. And it is performed to provide a lane in which only a vehicle on which a specific number of people are on the road can pass. Such lanes are called carpool lanes and HOV (High-Occupancy Vehicles) lanes.

  In a conventional navigation device, when a moving body approaches an entry point or a departure point of a car pool lane, a predetermined route guidance is performed (for example, Patent Document 1).

JP 2001-183159 A

  By the way, depending on the guidance route (also referred to as “recommended route”), it may be necessary to change the lane and enter the branch road immediately after leaving the car pool lane. In this case, when it is not easy to change the lane, it is difficult to travel along the guidance route. For example, if the exit of the highway and the exit of the car pool lane are too close, after driving on the car pool lane, it will become a sharp handle (or not in time) from the exit of the car pool lane to the exit of the highway There is.

  In addition, depending on the guidance route, it may be necessary to change the lane and enter the car pool lane immediately after joining the road where the car pool lane is installed. Even in this case, when it is not easy to change the lane, it is difficult to travel along the guidance route. For example, if the entrance to the highway and the entrance to the car pool lane are too close, it may become a sudden handle (or not in time) to enter the entrance to the car pool lane after entering the highway.

  An object of this invention is to provide the technique which performs guidance which is easy to drive | work according to a guidance route, even when there exists the road where the car pool lane is installed.

  The present invention for solving the above-mentioned problems is a navigation device, wherein a recommended route searching means for searching for a recommended route to a destination, and a guidance point setting means for setting a guidance point in the recommended route are set. Guidance information notifying means for notifying predetermined guidance information when the mobile body reaches the guidance point, wherein the guidance point setting means satisfies a predetermined condition on the road where the car pool lane is installed. If it is, the guidance point for notifying the guidance information from the road to the branch road is set before the guidance point when it is set on a road where no car pool lane is installed.

  The invention of the present application is a navigation device, which is a current location calculation means for calculating a current location of a mobile object, a recommended route search means for searching for a recommended route to a destination, and a guidance point for setting a guidance point in the recommended route. Setting means, and guidance information notifying means for notifying predetermined guidance information when the mobile body reaches the set guidance point, wherein the guidance point setting means is a road on which a car pool lane is installed. When the predetermined condition is satisfied, the guidance point for notifying the guidance information to the car pool lane is set in front of the guidance point when it is set on the road where the car pool lane is not installed. .

1 is a schematic configuration diagram of a navigation device to which an embodiment of the present invention is applied. It is a figure which shows the schematic data structure of map data. It is a functional block diagram of an arithmetic processing part. It is a figure which shows the schematic data structure of guidance point information. It is a flowchart which shows a guidance point change process. It is a figure which shows the schematic diagram of the highway (near highway exit) where the car pool lane is installed. It is a figure which shows the schematic diagram of the highway (near highway entrance) in which the car pool lane is installed.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a navigation device 100 to which an embodiment of the present invention is applied. As shown in the figure, the navigation device 100 includes an arithmetic processing unit 1, a display 2, a storage device 3, a voice input / output device 4 (microphone 41, speaker 42), and an input device 5 (touch panel 51, dial switch 52). A vehicle speed sensor 6, a gyro sensor 7, a GPS receiver 8, an FM multiplex broadcast receiver 9, and a beacon receiver 10. The navigation device 100 may be an in-vehicle navigation device mounted on a vehicle, or a mobile terminal such as a mobile phone or a PDA.

  The arithmetic processing unit 1 is a central unit that performs various processes. For example, the arithmetic processing unit 1 includes a CPU (Central Processing Unit) 21 that executes various processes such as numerical calculation and control of each device, and a RAM (Random) that stores map data, arithmetic data, and the like read from the storage device 3. (Access Memory) 22, ROM (Read Only Memory) 23 for storing programs and data, and I / F (interface) 24 for connecting various types of hardware to the arithmetic processing unit 1. The arithmetic processing unit 1 has a configuration in which devices are connected to each other via a bus 25. And each function part (101-106) mentioned later is implement | achieved when CPU21 runs the program read to memory, such as RAM22.

  For example, the arithmetic processing unit 1 calculates the current location based on information output from the various sensors (6, 7) and the GPS receiver 8. Further, map data necessary for display is read out from the storage device 3 based on the obtained current location information. Further, the read map data is developed in a graphic form, and a current location mark (or a moving body mark indicating the position of the moving body) is superimposed on the map data and displayed on the display 2. Further, using the map data stored in the storage device 3, an optimal route (hereinafter referred to as “the present location calculated by the arithmetic processing unit 1) and the destination are instructed by the user. "Recommended route"). The user is guided using the speaker 42 and the display 2 of the voice input / output device 4.

  The display 2 is a unit that displays graphics information generated by the arithmetic processing unit 1. The display 2 is configured by a liquid crystal display, an organic EL (Electro-Luminescence) display, or the like.

  The storage device 3 is composed of a storage medium such as a CD-ROM, DVD-ROM, HDD, or IC card. In this storage medium, for example, map data 310, audio data, moving image data, and the like are stored.

  FIG. 2 is a diagram illustrating a schematic data structure of the map data 310. As shown in the figure, the map data 310 includes link data 320 of each link constituting the road included in the mesh area for each mesh identification code (mesh ID) 311 that is a partitioned area on the map. Contains.

  For each link identification code (link ID) 321, link data 320 includes coordinate information 322 of two nodes (start node and end node) constituting the link, road type 323 indicating road type information including the link, link Link length information 324 indicating the length of the link, link travel time 325, link identification code (connection link ID) 326 connected to each of the two nodes, and the road containing the link is a car pool lane (or a car pool lane is installed) A car pool lane flag 327 indicating whether the road is a road, a lane number 328 indicating the number of lanes of the road including the link, and the like. Here, by distinguishing the start node and the end node for the two nodes constituting the link, the upward direction and the downward direction of the road can be managed as different links.

  Returning to FIG. 1, the voice input / output device 4 includes a microphone 41 as a voice input device and a speaker 42 as a voice output device. The microphone 41 acquires voices and the like emitted from the driver and other passengers. The speaker 42 outputs the audio signal generated by the arithmetic processing unit 1. The microphone 41 and the speaker 42 are separately arranged at a predetermined part of the vehicle.

  The input device 5 is a unit that receives instructions from the user. The input device 5 includes a touch panel 51, a dial switch 52, and other hardware switches (not shown) such as scroll keys and scale change keys. In addition, the input device 5 includes a remote controller that can perform operation instructions to the navigation device 100 remotely. The remote controller includes a dial switch, a scroll key, a scale change key, and the like, and can send information on operation of each key or switch to the navigation device 100.

  The touch panel 51 is a transparent operation panel attached to the display surface of the display 2. The touch panel 51 specifies a touch position corresponding to the XY coordinates of the image displayed on the display 2, converts the touch position into coordinates, and outputs the coordinate. The touch panel 51 includes a pressure-sensitive or electrostatic input detection element.

  The dial switch 52 is configured to be rotatable clockwise and counterclockwise, generates a pulse signal for every rotation of a predetermined angle, and outputs the pulse signal to the arithmetic processing unit 1. The arithmetic processing unit 1 obtains the rotation angle of the dial switch 52 from the number of pulse signals.

  The vehicle speed sensor 5, the gyro sensor 7, and the GPS receiver 8 are used to calculate the current location (own vehicle position) of the moving body (navigation device 100). The vehicle speed sensor 6 is a sensor that outputs vehicle speed data used for calculating the vehicle speed. The gyro sensor 7 is composed of an optical fiber gyro, a vibration gyro, or the like, and detects an angular velocity due to the rotation of the moving body. The GPS receiver 8 receives a signal from a GPS satellite, and measures the distance between the mobile body and the GPS satellite and the rate of change of the distance with respect to three or more satellites. Measure.

  The FM multiplex broadcast receiver 9 receives an FM multiplex broadcast signal sent from an FM broadcast station. FM multiplex broadcasting includes VICS (Vehicle Infomation Communication System (registered trademark) information, general current traffic information, regulatory information, SA / PA (service area / parking area) information, FM information such as parking information, weather information, etc. As text information provided by radio stations.

  The beacon receiving device 10 receives traffic jam information, regulation information, SA / PA information, parking lot information, and the like sent from the beacon.

  FIG. 3 is a functional block diagram of the arithmetic processing unit 1. As shown in the figure, the arithmetic processing unit 1 includes a main control unit 101, an input receiving unit 102, a display processing unit 103, a route search unit 104, a guidance point information setting unit 105, and a route guidance unit 106. Have.

  The main control unit 101 performs a process of controlling each unit of the arithmetic processing unit 1 in an integrated manner. The main control unit 101 manages various setting information included in the navigation device 100. For example, the main control unit 101 receives information set as various setting information from the user via the input receiving unit 102 and stores the information in a predetermined position of the storage device 3. Note that the main control unit 101 accepts information related to the use of the car pool lane (for example, information about whether the car pool lane is actively used as true or false) as the various setting information, and the storage device 3. To store. When the main control unit 101 receives a request for providing various setting information from another unit, the main control unit 101 transfers the various setting information to the requesting unit.

  The input receiving unit 102 receives a request from the user input to the input device 5, analyzes the request content, and notifies the main control unit 101 of data corresponding to the analysis result. For example, the input reception unit 102 receives a request for instructing the navigation device 100 to turn on / off the power, and notifies the main control unit 101 of the request. Further, the input receiving unit 102 receives input data relating to various function settings (for example, setting of a departure place and a destination) that the navigation apparatus 100 has, and notifies the main control unit 101 of the input data.

  The display processing unit 103 causes the display 2 to display a map, a searched recommended route, various messages notified to the user, and the like. Specifically, the display processing unit 103 generates and notifies a drawing command to be displayed on the display 2. When the display processing unit 103 displays a map on the display 2, the display processing unit 103 extracts map data in an area requested to be displayed (for example, an area necessary for displaying the entire recommended route) from the storage device 3. Then, a map command is generated so as to draw a road, other map structures, the current location, a destination, a recommended route, etc. by the designated drawing method, and is notified to the main control unit 101. The display processing unit 103 generates a command for displaying a vehicle mark indicating the position of the vehicle, various setting screens, and the like on the map displayed on the display 2 and notifies the main control unit 101 of the command.

  The route search unit 104 performs a process of searching for a recommended route. Specifically, the route search unit 104 uses the Dijkstra method or the like, and the cost (for example, total distance and total travel time) of a route connecting two designated points (departure point, current location, destination) is the smallest. Search for a route. At this time, the route search unit 104 stores an identification code (link ID) 321 of each link constituting the searched recommended route in a memory such as the RAM 22 in association with each other.

  The guidance point information setting unit 105 performs setting for a point (hereinafter referred to as “guidance point”) for outputting guidance information for guiding the mobile body (vehicle). Specifically, after the route search, the guidance point information setting unit 105 generates guidance point information 400 related to the guidance point and stores it in a memory such as the RAM 22 before starting the route guidance. The guidance point setting performed for the first time after the route search is hereinafter referred to as “initial setting”.

  FIG. 4 is a diagram showing a schematic data structure of the guidance point information 400. As shown in FIG. The guidance point information 400 includes a record 415 for each guidance point 413 as illustrated. Each record 415 stores a guidance order 411, a link ID 412, a guidance point 413, and guidance information 414 in association with each other.

  Here, the guidance order 411 is data indicating the order in which the guidance information 414 on the recommended route is output from the departure point or current location of the recommended route to the destination. The link ID 412 is an identification code of the link where the guidance point 413 is located. The guidance point 413 is coordinate data that specifies the position of the guidance point. The guidance information 414 includes data such as audio data and image data, and is data for outputting, for example, “It is an expressway exit soon”. The guidance information 414 stores character data such as “entrance” and “exit” in association with each other as attribute information.

  In addition, the guidance point information setting unit 105 changes the guidance point 413 to be changed when the lane change is not easy on the road where the car pool lane is installed. Specific processing (guidance point change processing) regarding the change of the guidance point 413 will be described later.

  The route guidance unit 106 performs route guidance using the recommended route searched by the route search unit 104. For example, the route guidance unit 106 displays (highlights) the recommended route included in the map range displayed on the display 2 via the display processing unit 103. At this time, the route guiding unit 106 displays a moving body mark (car mark) indicating the current location of the moving body (vehicle) on the recommended route.

  In addition, the route guidance unit 106 outputs (displays and outputs voice) predetermined guidance information every time the mobile body reaches the set guidance point. Specifically, the route guidance unit 106 outputs guidance information 414 associated with the guidance point 413 when the current position matches (substantially matches) the guidance point 413 stored in the guidance point information 400. . As a result, the route guidance unit 106 goes straight ahead (for example, 300 meters before) before passing a point that requires guidance (for example, a major intersection, a car pool lane entry point, a highway branch point, etc.). Whether to turn left or right should be displayed on the display 2, and the user can be notified by voice using the speaker 42 of the voice input / output device 4.

  Next, a characteristic operation of the navigation device 100 configured as described above will be described.

<Induction point change processing>
FIG. 5 is a flowchart showing guidance point change processing performed by the navigation device 100.

  For example, the guidance point information setting unit 105 of the arithmetic processing unit 1 starts the guidance point change process at the timing when the route guidance unit 106 starts the route guidance.

  First, the route guidance unit 106 determines whether or not the navigation device 100 is set to use a car pool lane (step S100). Specifically, the route guiding unit 106 uses information related to the use of the car pool lane (for example, true or false information set for using the car pool lane) among various setting information included in the navigation device 100. Obtained from the main control unit 101. When the acquired information includes information (true) indicating that the car pool lane is used, the route guiding unit 106 determines that the setting is to use the car pool lane. On the other hand, when the acquired information includes information (false) indicating that the car pool lane is not used, the route guiding unit 106 determines that the setting is not to use the car pool lane.

  If the route guiding unit 106 determines that the setting is to use the car pool lane (step S100; Yes), the process proceeds to step S101. On the other hand, if the route guiding unit 106 determines that the setting is not to use the car pool lane (step S100; No), the process proceeds to step S107, and the normal (when the car pool lane is not used). ()) Route guidance.

  When the process proceeds to step S101, the route guiding unit 106 calculates the current location of the moving body (vehicle) (step S101). For example, the route guidance unit 106 calculates the current location of the moving body using the vehicle speed data output from the vehicle speed sensor 6, the angular velocity data detected by the gyro sensor 7, and the like. The route guiding unit 106 corrects the current location using the output data of the GPS receiver 8.

  Then, the guidance point information setting unit 105 is within a predetermined distance from the current location and acquires unacquired guidance point information (record 415) (step S102). For example, the guidance point information setting unit 105 refers to the guidance point information 400 and identifies the record 415 having the guidance point 413 within a predetermined distance (for example, 3 km) from the current position calculated in step S101. Then, among the identified records 415, the records 415 that have not yet been acquired (not read into the memory such as the RAM 22) are read out. However, the guidance point information setting unit 105 reads the record 415 in the order indicated by the guidance order 411.

  Next, the guidance point information setting unit 105 determines whether or not the lane change is not easy on the road where the car pool lane is installed (step S103).

  FIG. 6 is a diagram showing a schematic diagram of a highway (near a highway exit) where a car pool lane is installed. In the illustrated example, one lane of a car pool lane is installed in parallel on a two-lane highway (general lane). The car pool lane and the general lane are separated by a separation band. Therefore, a vehicle traveling in the car pool lane can leave the car pool lane only from a specific section. For example, there are a plurality of sections (leaving permission section A, leaving permission section B) that are permitted to leave the car pool lane to the general lane for each exit of the expressway.

  Here, when it is easy to change the lane in the general lane, leave the car pool lane from the leaving permitted section A close to the exit of the expressway and enter the branch road toward the exit of the expressway. Can do. However, when it is not easy to change the lane in the general lane, if the car pool lane is departed from the separation permitted section A near the exit of the highway, there is a possibility that the vehicle cannot enter the branch road toward the exit of the highway.

  The guidance point 413 set by the initial setting is a predetermined distance from a point (such as an intersection) that requires guidance, whether it is a road where a car pool lane is installed or not (for example, , 300m before). For this reason, when the guidance information 414 is output at the guidance point 413 set by the initial setting, the moving body may leave the car pool lane only from the leaving permitted section A and may not enter the branch road ahead.

  Therefore, if the lane change is not easy on the road where the car pool lane is installed, the guidance point information setting unit 105 of the present embodiment shifts the process to step S104 and sets the initial setting. The guided guidance point P is changed to the front (the guidance point P ′ after the change). On the other hand, if the lane change is easy on the road where the car pool lane is installed, the guidance point P is not changed and the process proceeds to step S105 as it is.

  Hereinafter, specific processing in step S103 will be described.

  The guidance point information setting unit 105 determines that the lane change is not easy when the predetermined condition is satisfied. On the other hand, when the predetermined condition is not satisfied, it is determined that the lane change is easy.

  Here, the predetermined condition is any one of the following “first condition”, “second condition”, and “third condition”. The predetermined condition may be a combination of each condition (first condition, second condition, and third condition). For example, two or more of “first condition”, “second condition”, and “third condition” may be set.

"First condition"
The distance X from the first leaving permission section (first leaving point) A shown in FIG. 6 to the branch point is shorter than a predetermined distance (for example, 500 m).

"Second condition"
The number of highways (general lanes) is equal to or greater than a predetermined number (for example, 3 lanes).

"Third condition"
The expressway (general lane) is congested.

  That is, the guidance point information setting unit 105 identifies the car pool lane link with reference to the car pool lane flag 327 of the link data 320, and uses the link to identify the first leaving permitted section (first leaving point). ) Calculate the distance X from A to the branch point. Then, when the first condition is satisfied, it is determined that the predetermined condition is satisfied.

  Similarly, the guidance point information setting unit 105 refers to the car pool lane flag 327 and the number of lanes 328 of the link data 320 to identify the number of lanes on the road (highway) where the car pool lane is installed. . Then, when the second condition is satisfied, it is determined that the predetermined condition is satisfied.

  In addition, the guidance point information setting unit 105 uses the FM multiplex broadcast receiving device 9 or the beacon receiving device 10 or the like, and traffic congestion information (regulation information) of a route search target area (for example, an area including from the departure place to the destination). Etc.). At the same time, the car pool lane flag 327 of the link data 320 is referenced to identify the car pool lane link. Then, using the acquired traffic information and the specified link, it is determined whether or not the road (highway) where the car pool lane is installed is congested. Then, when the third condition is satisfied, it is determined that the predetermined condition is satisfied.

  When the process proceeds to step S104, the guidance point information setting unit 105 changes the guidance point P set by the initial setting (step S104). For example, the guidance point information setting unit 105 searches the guidance point information (record 415) acquired in step S102 for guidance information 414 having character data “exit” as attribute information. Then, the guidance point 413 associated with the retrieved guidance information 414 is specified as the guidance point to be changed. Here, the guidance point information setting unit 105 changes the specified guidance point 413 to be changed to a point closer to the point set by the initial setting (that is, a predetermined distance toward the destination of the guidance route). To do.

  After changing the guidance point 413, the guidance point information setting unit 105 moves the process to step S105.

  When the process proceeds to step S105, the route guidance unit 106 determines whether or not the moving body (vehicle) has reached the guidance point (step S105). For example, the route guidance unit 106 compares the current position calculated in step S101 with the set guidance point (the guidance point 413 stored in the guidance point information 400). Then, when the current position matches (substantially matches) the guidance point, it is determined that the moving body has reached the guidance point. On the other hand, if the current position does not match the guidance point, it is determined that the mobile body has not reached the guidance point.

  When it is determined that the moving body has not reached the guidance point (step S105; No), the route guidance unit 106 returns the process to step S101. On the other hand, when the route guidance unit 106 determines that the moving body has reached the guidance point (step S105; Yes), the process proceeds to step S106.

  When the process proceeds to step S106, the route guidance unit 106 notifies the user of guidance information about the guidance point reached by the mobile object (step S106). Specifically, the route guidance unit 106 reads the guidance information 414 associated with the guidance point 413 reached by the moving body, displays the guidance information 414 on the display 2, and outputs the voice from the speaker 42.

  Then, the route guiding unit 106 returns the process to step S101. And the arithmetic processing part 1 repeatedly performs this flow until route guidance is complete | finished.

  When the arithmetic processing unit 1 performs the above processing, the navigation device 100 of the present embodiment, as shown in FIG. 6, has a point before the guidance point P set by the initial setting (the guidance point P after the change). ') Can be changed. Then, at the guidance point P ′ after the change, for example, it is possible to provide guidance such as “Soon to be an expressway exit”. As a result, the moving body (vehicle) can leave the car pool lane from the second leaving permission section (second leaving point) B, and can enter the branch road ahead with a margin.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation and application are possible.

  For example, in the above embodiment, a process for changing the guidance point near the high-speed exit is described. However, the present invention is not limited to this. For example, the guidance point near the high speed entrance may be changed.

  FIG. 7 is a diagram showing a schematic diagram of the expressway (near the expressway entrance) where the car pool lane is installed. In the illustrated example, similarly to the above-described embodiment, one lane of a car pool lane is installed in parallel on a two-lane highway (general lane). The car pool lane and the general lane are separated by a separation band. Therefore, the vehicle can enter the car pool lane only from a specific section. For example, at least one section (entrance-permitted section C) is provided for each entrance of the expressway as the section where entry from the general lane to the car pool lane is permitted.

  Here, when it is easy to change the lane in the general lane, the vehicle can be guided to the car pool lane after joining the general lane (highway) and enter the car pool lane. However, when it is not easy to change the lane in the general lane, there is a possibility that the vehicle cannot enter the car pool lane if guidance to the car pool lane is performed after joining the general lane (highway).

  Then, as described above, the guidance point 413 set by the initial setting is a predetermined point from a point (intersection or the like) that requires guidance, regardless of whether or not the road has a car pool lane. The distance is set to the front (for example, 300 m before). Therefore, when the guidance information 414 is output at the guidance point 413 set by the initial setting, the guidance information 414 may be joined to the general lane and then guided to the car pool lane.

  Therefore, the guidance point information setting unit 105 performs the processes of steps S103 and S104 of the above embodiment as follows.

(Step S103)
The guidance point information setting unit 105 determines that the lane change is not easy when the predetermined condition is satisfied. On the other hand, when the predetermined condition is not satisfied, it is determined that the lane change is easy.

  Here, the predetermined condition is one of the following “fourth condition”, “fifth condition”, and “sixth condition”. The predetermined condition may be a combination of the conditions (fourth condition, fifth condition, and sixth condition). For example, two or more of “fourth condition”, “fifth condition”, and “sixth condition” may be set.

"Fourth condition"
The distance Y from the entry point to the expressway (general lane) to the entry permission section (entry point) C shown in FIG. 7 is shorter than a predetermined distance (for example, 500 m).

"Fifth condition"
The number of highways (general lanes) is equal to or greater than a predetermined number (for example, 3 lanes).

"Sixth condition"
The expressway (general lane) is congested.

  That is, the guidance point information setting unit 105 identifies the car pool lane link with reference to the car pool lane flag 327 of the link data 320, and enters from the entry point to the expressway (general lane) using the link. A distance Y to the permitted section (entry point) C is calculated. Then, when the fourth condition is satisfied, it is determined that the predetermined condition is satisfied.

  Similarly, the guidance point information setting unit 105 refers to the car pool lane flag 327 and the number of lanes 328 of the link data 320 to identify the number of lanes on the road (highway) where the car pool lane is installed. . When the fifth condition is satisfied, it is determined that the predetermined condition is satisfied.

  In addition, the guidance point information setting unit 105 uses the FM multiplex broadcast receiving device 9 or the beacon receiving device 10 or the like, and traffic congestion information (regulation information) of a route search target area (for example, an area including from the departure place to the destination). Etc.). At the same time, the car pool lane flag 327 of the link data 320 is referenced to identify the car pool lane link. Then, using the acquired traffic information and the specified link, it is determined whether or not the road (highway) where the car pool lane is installed is congested. Then, when the sixth condition is satisfied, it is determined that the predetermined condition is satisfied.

(Step S104)
When the lane change is not easy on the road where the car pool lane is installed, the guidance point information setting unit 105 changes the guidance point P set by the initial setting to the front (after the change). Guiding point P ′).

  Specifically, the guidance point information setting unit 105 searches for guidance information 414 having character data “entrance” as attribute information from the guidance point information (record 415) acquired in step S102. Then, the guidance point 413 associated with the retrieved guidance information 414 is specified as the guidance point to be changed. Here, the guidance point information setting unit 105 changes the specified guidance point 413 to be changed to a point closer to the point set by the initial setting (that is, a predetermined distance toward the destination of the guidance route). To do.

  When the guidance point information setting unit 105 performs the above processing (steps S103 and S104), the navigation device 100 sets the point before the guidance point P set by the initial setting (the guidance point P ′ after the change). Can be changed. Then, at the guidance point P ′ after the change, for example, guidance such as “coming soon to the car pool lane entrance” can be performed. As a result, the mobile body (vehicle) can enter the car pool lane from the entry permission section (entrance point) C with a margin.

  Moreover, in the said embodiment, the road where the car pool lane is installed is demonstrated as a highway. However, the present invention is not limited to this. For example, the road on which the car pool lane is installed may be a general road.

  Moreover, in the said embodiment, the branch point is made into the point which goes to an exit (exit of a highway) from a highway (general lane). However, the present invention is not limited to this. For example, the branch point may be a junction, an intersection, or the like.

  Similarly, the junction point in the above embodiment may be a junction, an intersection, or the like.

  In the above embodiment, the car pool lane and the general lane are separated by the separation band. However, the present invention is not limited to this. For example, the car pool lane and the general lane may be separated by a lane boundary line.

  Moreover, the navigation apparatus 100 of the said embodiment may be provided with the camera 11 (dotted line of FIG. 1) which images a road surface.

  In this case, the camera 11 images the road surface on which the moving body is traveling. For example, the camera 11 captures a mark (for example, a rhombus mark) indicating a car pool lane.

  The guidance point information setting unit 105 determines from the road surface image obtained from the camera 11 whether the moving body is traveling on the car pool lane. And when it determines with driving | running | working a car pool lane, the process of said step S103 and step S104 is performed.

  In the above embodiment, the guidance point changing process is started at the timing when the route guidance is started. However, the present invention is not limited to this. For example, the guidance point changing process may be performed prior to the start of route guidance. In this case, the process in step S101 is omitted. In step S102, the guidance point information setting unit 105 acquires all the records 415 included in the guidance point information 400. In this way, the guidance point information setting unit 105 can identify the guidance point to be changed prior to the start of route guidance, and can change the guidance point information before the point set by the initial setting.

  Moreover, in the said embodiment, the 6th condition is used from the 1st condition as conditions for determining whether a lane change is easy. However, the present invention is not limited to this. For example, when the weather is bad, it may be determined that the lane change is not easy. Note that whether the weather is good or bad is determined by, for example, whether or not the wiper is driven.

  DESCRIPTION OF SYMBOLS 1 ... Operation processing part, 2 ... Display, 3 ... Memory | storage device, 4 ... Voice input / output device, 5 ... Input device, 6 ... Vehicle speed sensor, 7 ... Gyro sensor 8 ... GPS receiver, 9 ... FM multiplex broadcast receiver, 10 ... beacon receiver, 11 ... camera, 21 ... CPU, 22 ... RAM, 23 ... ROM 24 ... Interface (I / F), 41 ... Microphone, 42 ... Speaker, 51 ... Touch panel, 52 ... Dial switch, 100 ... Navigation device, 101 ... Main control , 102... Input receiving unit, 103... Display processing unit, 104... Route search unit, 105... Guidance point information setting unit, 106. 311 ... Mesh D, 320 ... link data, 321 ... link ID, 322 ... start node / end node, 323 ... road type, 324 ... link length, 325 ... link travel time, 326 -Start connection link-End connection link, 327 ... Car pool lane flag, 328 ... Number of lanes, 400 ... Guidance point information, 411 ... Guidance order, 412 ... Link ID, 413 ..Guidance points, 414 ... guidance information, 415 ... records

Claims (10)

A current location calculating means for calculating the current location of the moving object;
A recommended route search means for searching for a recommended route to the destination;
Guidance point setting means for setting a guidance point on the recommended route;
A guidance information notification means for notifying predetermined guidance information when the mobile body reaches the guidance point;
The guidance point setting means includes
If the road where the car pool lane is installed satisfies the specified conditions, the guidance point for notifying the guidance information from the road to the branch road is set on the road where the car pool lane is not installed. Set before the guidance point when
A navigation device characterized by that. The navigation device according to claim 1,
The guidance point setting means includes
When the distance from the departure point of the car pool lane to the branch point to the branch road is shorter than a predetermined distance, the guide point when the guide point is set on a road where no car pool lane is installed Set to the front,
A navigation device characterized by that. The navigation device according to claim 1 or 2,
The guidance point setting means includes
When the number of lanes on the road where the car pool lane is installed is a predetermined number or more, the guidance information is not notified at the guidance point.
A navigation device characterized by that. The navigation device according to any one of claims 1 to 3,
A traffic information acquisition means for acquiring traffic information,
The guidance point setting means includes
Identify the traffic jam on the recommended route from the traffic jam information,
When the road where the car pool lane is installed is congested, the guidance point is set in front of the guidance point when set on a road where the car pool lane is not installed.
A navigation device characterized by that. The navigation device according to any one of claims 1 to 4,
Imaging means for imaging the road surface of the traveling lane in which the moving object is traveling;
Lane determination means for determining whether or not the moving body is traveling in a car pool lane from a road surface image obtained by imaging with the imaging means,
The guidance point setting means includes
When it is determined that the moving body is traveling in the car pool lane, if the guidance point satisfies a predetermined condition, the guidance point is set on a road where the car pool lane is not installed. Set before the guide point when set,
A navigation device characterized by that. The navigation device according to any one of claims 1 to 4,
The guidance point setting means includes
When the distance from the junction point to the road where the car pool lane is installed to the entry point to the car pool lane is shorter than a predetermined distance, the guidance point is the road where the car pool lane is not installed. Set in front of the guide point when set in
A navigation device characterized by that. A route guidance method in a navigation device,
A current location calculating step for calculating the current location of the moving object;
A recommended route search step for searching a recommended route to the destination;
A guidance point setting step for setting a guidance point on the recommended route;
When a mobile body reaches the guidance point, a guidance information notification step for notifying predetermined guidance information;
Have
In the guidance point setting step,
If the road where the car pool lane is installed satisfies the specified conditions, the guidance point for notifying the guidance information from the road to the branch road is set on the road where the car pool lane is not installed. Set before the guidance point when
A route guidance method characterized by that. A program that causes a computer to function as a navigation device,
A current location calculating step for calculating the current location of the moving object;
A recommended route search step for searching a recommended route to the destination;
A guidance point setting step for setting a guidance point on the recommended route;
When the mobile body reaches the guidance point, the guidance information notification step of notifying predetermined guidance information is executed by the computer,
In the guidance point setting step,
If the road where the car pool lane is installed satisfies the specified conditions, the guidance point for notifying the guidance information from the road to the branch road is set on the road where the car pool lane is not installed. Set before the guidance point when
A program characterized by that. A current location calculating means for calculating the current location of the moving object;
A recommended route search means for searching for a recommended route to the destination;
Guidance point setting means for setting a guidance point on the recommended route;
A guidance information notification means for notifying predetermined guidance information when the mobile body reaches the guidance point;
The guidance point setting means includes
If the road where the car pool lane is installed meets the specified conditions,
Set the guidance point to notify the guidance information to the car pool lane before the guidance point when it is set on the road where the car pool lane is not installed.
A navigation device characterized by that. The navigation device according to claim 9,
The guidance point setting means includes
When the distance from the junction point to the road where the car pool lane is installed to the entry point to the car pool lane is shorter than a predetermined distance, the guidance point is the road where the car pool lane is not installed. Set in front of the guide point when set in
A navigation device characterized by that.

Images