JP2010048794A - Road traveling information notification system, road traveling information notification method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a vehicle to travel smoothly up to a destination by notifying an operator of travel restriction information, when a travel restriction exists in front of an own vehicle position. <P>SOLUTION: This system has a present place detection part for detecting the own vehicle position, a basic information acquisition processing means for acquiring map data, a travel restriction section determination processing means for determining whether or not a travel restriction section wherein traveling toward a prescribed direction is restricted exists in front of the own vehicle position on reference to the map data, and a notification processing means for notifying the operator of travel restriction information in the travel restriction section when the travel restriction section exists. Since the operator is notified of the travel restriction information in the travel restriction section when the travel restriction section exists in front of the own vehicle position, the vehicle can travel smoothly up to the destination without making a long detour for reaching the destination, or without stress feeling of a driver. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a road travel information notification system, a road travel information notification method, and a program.

  Conventionally, in a navigation device, when a driver who is an operator inputs a destination name, address, telephone number, etc., a destination setting process is performed, and then when the driver sets search conditions, the search is performed. A route search process is performed based on the conditions, and a route from the departure point to the destination represented by the current location is searched based on the map data. Then, the searched route, that is, the searched route, is displayed together with the position of the vehicle that is the current location of the vehicle on the map screen formed on the display unit, and the guidance of the searched route, that is, route guidance is performed. In addition to displaying the searched route on the map screen, route guidance by voice output is also performed (see, for example, Patent Document 1).

By the way, when only the direction of the destination is known, the driver does not input the destination, looks at the map screen, searches for information on the destination using signs, buildings, etc. The vehicle may run.
JP-A-10-260054

  However, in the conventional navigation device, if it is found that the destination is on the right or left side of the road around which the vehicle is traveling, the vehicle is at a predetermined intersection in front of the vehicle position. The road on which the vehicle is traveling is restricted such as an elevated road, bypass road, etc. where there is no predetermined section intersection (hereinafter referred to as “travel restricted road”). )), The vehicle cannot be turned right or left at the desired location, and it is necessary to make a detour to reach the destination, or the driver feels stressed. . Therefore, the vehicle cannot travel smoothly to the destination.

  The present invention solves the problems of the conventional navigation device, and when traveling is restricted in front of the host vehicle position, notifies the operator of the travel restriction information, and makes the vehicle travel smoothly to the destination. It is an object of the present invention to provide a road travel information notification system, a road travel information notification method, and a program that can be used.

  Therefore, in the road travel information notification system of the present invention, the current position detection unit for detecting the vehicle position, the basic information acquisition processing means for acquiring the map data, and the map data are referred to in front of the vehicle position. , A travel constraint section determination processing means for determining whether or not there is a travel constraint section where travel in a predetermined direction is restricted, and if there is a travel constraint section, the travel constraint information of the travel constraint section is notified to the operator Notification processing means.

  According to the present invention, when there is a travel restriction section in which travel in a predetermined direction is restricted in front of the vehicle position, the travel restriction information of the travel restriction section is notified to the operator. The vehicle can be smoothly driven to the destination without having to make a detour to reach the destination or causing the driver to feel stress.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, a navigation system as a road travel information notification system will be described.

  FIG. 1 is a block diagram showing a navigation system according to the first embodiment of the present invention.

  In the figure, 14 is an information terminal, for example, a navigation device as an in-vehicle device mounted on a vehicle, 63 is a network, 51 is an information center as an information provider, the navigation device 14, the network 63, the information center 51, etc. The navigation system is configured by the above.

  The navigation device 14 is an information record in which various information is recorded in addition to the GPS sensor 15 as a current position detection unit that detects the current position of the vehicle as the vehicle position and the vehicle direction as the vehicle direction, and map data. A data recording unit 16 as a unit, a navigation processing unit 17 that performs various arithmetic processing such as navigation processing based on the input information, and a first for performing a predetermined input when operated by a driver as an operator A display unit 35 as a first output unit for performing various displays on a screen (not shown) as a first input unit, a screen (not shown), and notifying the driver, and for performing a predetermined input by voice A voice input unit 36 as a second input unit, a voice output unit 37 as a second output unit for notifying the driver by voice, and a communication terminal The navigation processing unit 17 includes a GPS sensor 15, a data recording unit 16, an operation unit 34, a display unit 35, a voice input unit 36, a voice output unit 37, and a communication unit. 38 is connected. The navigation processing unit 17 is connected to a vehicle speed sensor 44 as a vehicle speed detection unit that detects a vehicle speed.

  In the present embodiment, the vehicle direction is detected by the GPS sensor 15, but in order to detect the direction of the vehicle, the direction sensor as the direction detection unit may be provided independently. it can. The GPS sensor 15 also detects the time.

  Map data is recorded in the data recording unit 16, and the map data includes intersection data relating to intersections (including branch points), road data relating to roads connecting the intersections, and road end points (start and end points). Node data related to the node, search data processed for search, facility data related to the facility, data for outputting predetermined information by the voice output unit 37, statistical data, travel history data, and the like are recorded.

  As the intersection data, data representing the name of the intersection, the coordinates of the intersection (latitude and longitude), the shape of the intersection, the main facilities adjacent to the intersection, the main place name ahead of the intersection, the distance between the intersections at the continuous intersection, etc. Is recorded. In addition, as the intersection data, for intersections where vehicle travel is restricted, for example, intersections where a right turn or left turn is restricted such as a three-dimensional intersection, a one-way exit intersection, an intersection with a median strip, etc. Data representing the contents of is recorded.

  Further, as the intersection data, a road entering the intersection, that is, an approach angle indicating the direction of the approach road, a road exiting from the intersection, that is, an exit angle indicating the direction of the exit road, and the like are recorded.

  Further, as the road data, road link data representing a road link from the start point to the end point of the road, and shape interpolation as a plurality of set points set along the road to represent the road shape on the road link Point data (hereinafter referred to as “interpolation point data”) is recorded. The interpolation point data includes the number, coordinates, azimuth angle (segment angle), etc. of each shape interpolation point. The azimuth angle is obtained when a segment connecting the shape interpolation point and the previous shape interpolation point is a front segment, and a segment connecting the shape interpolation point and the next shape interpolation point is a rear segment. The angle formed by the rear segment with respect to the front segment.

  As the road data, data representing the width, slope, cant, bank, road surface condition, number of road lanes, places where the number of lanes decreases, places where the width becomes narrower, crossings, etc. However, regarding the corner, the data indicating the radius of curvature, the intersection, the T-junction, the entrance and the exit of the corner, etc., the road attribute, the data indicating the downhill road, the uphill road, etc., the road type, the national road, the prefectural road, the narrow street In addition to general roads, etc., data representing expressways and toll roads such as expressways, city expressways, and toll roads are recorded. In addition, for highway / toll roads, data indicating the entrance and exit attachment roads (rampways), toll gates, etc. are recorded.

  Further, as the road data, a section in which traveling in a predetermined direction on the road, in the present embodiment, traveling in the direction of the destination is restricted is recorded as a travel restriction section.

  The travel restriction section includes a section in which travel of at least one of a right turn and a left turn is restricted over at least a first predetermined distance, for example, 500 [m]. Therefore, the travel restriction section includes a section in which either a right turn or a left turn is possible, that is, there is no intersection where the traveling direction can be changed. A road in which the travel restriction section continues, for example, an elevated road, a bypass road, or the like is recorded as the travel restriction road.

  Furthermore, the travel restriction section includes a section that has no intersection that can change the traveling direction over at least a second predetermined distance, for example, 300 [m], and that is largely curved. An angle (hereinafter referred to as “road deflection angle”) obtained by adding the azimuth angles of the shape interpolation points from the shape interpolation point that is the start point of the section to the shape interpolation point immediately before the end point is predetermined. In this embodiment, it is determined whether or not it is 45 [°] or more. When the road deflection angle is 45 [°] or more, the section is set as a travel restriction section. .

  That is, when the distance from the first point represented by the shape interpolation point to the second point represented by the shape interpolation point is 300 [m] or more, the forward segment of the first point, The angle formed by the forward segment of the second point, that is, the road immediately before the second point, with respect to the road immediately before the first point becomes the road deflection angle. Then, when the first point is a predetermined intersection and the second point is the next intersection, the predetermined point when the distance between the predetermined intersection and the next intersection is 300 [m] or more. The angle formed by the approach road to the next intersection with respect to the approach road to the other intersection is the road deflection angle.

  In addition, as data representing the travel restriction section, the node that is the start point of the travel restriction section, the node that is the end point of the travel restriction section, the distance of the travel restriction section, and the like are recorded. The node that is the starting point of the travel restricted road, the node that is the end point of the travel restricted road, the distance of the travel restricted road, and the like are recorded.

  The data recording unit 16 reads and writes various data in addition to a disk (not shown) such as a hard disk, CD, DVD, and optical disk for recording the various data. And a head (not shown). A memory card or the like can be used for the data recording unit 16.

  The navigation processing unit 17 is a control device that performs overall control of the navigation device 14 and a CPU 31 as an arithmetic device, a RAM 32 that is used as a working memory when the CPU 31 performs various arithmetic processes, Used for recording various data, programs, etc., in addition to programs for the purpose, search for the route to the destination, guidance of the searched route, that is, various programs for performing route guidance, etc. And a flash memory (not shown).

  The operation unit 34 is for realizing various functions in the navigation device 14 when operated by a driver. In addition to a remote controller, a keyboard, a mouse, and the like arranged independently of the navigation device 14, the operation unit 34. The navigation device 14 includes a switch, a button, a key, a dial, and the like disposed as operation elements on a casing or the like. A display is used as the display unit 35. In the present embodiment, a touch panel having both functions of the operation unit can be used as the operation unit 34 and the display unit 35. In the touch panel, keys, switches, buttons, and the like are used as operation elements based on images on the screen. Is displayed, and a predetermined input operation can be performed by touching a key, switch, button, or the like.

  The voice input unit 36 includes a microphone (not shown) and the like, and can input necessary information by voice. Furthermore, the voice output unit 37 includes a voice synthesizer and a speaker (not shown), and various information is output from the voice output unit 37 as voice.

  The communication unit 38 is arranged along a road with various information such as traffic information and general information sent from a road traffic information center (not shown) such as a VICS (registered trademark) center as an information provider. A beacon receiver for receiving a radio wave beacon, an optical beacon, or the like via a radio beacon device, an optical beacon device, or the like, a radio receiver for receiving a radio broadcast such as FM multiplex broadcast via a radio station, or the like is provided. The traffic information includes traffic jam information, regulation information, parking lot information, traffic accident information, service area congestion status information, and the like, and general information includes news, weather forecasts, and the like. The communication unit 38 can receive various information such as traffic information and general information from the information center 51. For this purpose, the information center 51 includes a server 53, a communication unit 57 connected to the server 53, and a database (DB) 58 as an information recording unit. The server 53 serves as a control device and an arithmetic device. CPU54, RAM55, ROM56 grade | etc., Are provided. In addition, data similar to various data recorded in the data recording unit 16 is recorded in the database 58. Furthermore, the information center 51 can provide travel history data collected from a plurality of vehicles (own vehicle or other vehicle) in real time.

  The navigation system, the navigation processing unit 17, the CPUs 31, 54, the server 53, and the like function as a computer based on various programs, data, and the like. The data recording unit 16, RAMs 32 and 55, ROMs 33 and 56, database 58, flash memory, and the like constitute a storage device or recording medium. An MPU or the like can be used instead of the CPUs 31 and 54 as the arithmetic unit.

  Next, a basic operation of the navigation system having the above configuration will be described.

  First, when the operation unit 34 is operated by the driver and the navigation device 14 is activated, an initialization processing unit (not shown) of the CPU 31 performs initialization processing, and the vehicle position and the vehicle detected by the GPS sensor 15 are detected. Reads the direction and initializes various data. The matching processing means (not shown) of the CPU 31 performs matching processing, and based on the read trajectory of the own vehicle position and the shape, arrangement, etc. of each road link constituting the road around the own vehicle position. The vehicle position is specified by determining on which road link the vehicle position is located.

  Subsequently, a basic information acquisition processing unit (not shown) of the CPU 31 performs a basic information acquisition process and acquires the map data by reading it from the data recording unit 16 or receiving it from the information center 51 or the like via the communication unit 38. And get.

  The display processing means (not shown) of the CPU 31 performs display processing, forms a map screen on the display unit 35, and displays the vehicle position, a map around the vehicle position, and the vehicle direction on the map screen. . Therefore, the driver can drive the vehicle according to the vehicle position, the map around the vehicle position, and the vehicle direction.

  When the driver operates the operation unit 34 to input a predetermined point as a destination, destination setting processing means (not shown) of the CPU 31 performs destination setting processing to set the destination. Note that the departure place can be input and set as necessary. Moreover, a predetermined point can be registered as a registered point in advance, and the registered point can be set as a destination.

  Subsequently, when the driver operates the operation unit 34 to input search conditions, a route search processing unit (not shown) of the CPU 31 performs route search processing and reads the vehicle position, destination, search conditions, and the like. The search data and the like are read from the data recording unit 16, and based on the vehicle position, the destination, and the search data, the route from the departure point to the destination represented by the vehicle position is searched using the search conditions, and the search route is determined. Output the route data to be represented. In this case, the route having the smallest total link cost assigned to each road link is set as the searched route.

  A guidance processing means (not shown) of the CPU 31 performs guidance processing and provides route guidance. For this purpose, the route display processing means of the guidance processing means performs route display processing, reads the route data, and displays the searched route on the map screen according to the route data. In this case, if necessary, the voice output processing means of the guidance processing means performs voice output processing and outputs a search route by voice from the voice output unit 37 to perform route guidance.

  Further, when the traffic information is received via the communication unit 38, the display processing means converts the traffic information into a traffic jam zone as a traffic condition index, and displays the traffic jam zone along the road on the map screen. In this case, the traffic jam zone is displayed extending from the traffic jam start point to the traffic end point, and is displayed in a color such as red, orange, or green depending on the traffic jam level. In this way, the driver can know the traffic congestion situation of the road on the route on which the vehicle is scheduled to travel, the searched route, and the like.

  By the way, in the route guidance, when it is necessary to guide the searched route at a predetermined intersection, the intersection is set as a guidance intersection. For this purpose, the guidance intersection setting processing means of the guidance processing means performs guidance intersection setting processing, and whether there is an intersection that requires the vehicle to turn left, right, or go straight according to the route data, that is, based on the searched route. If there is an intersection that needs to be turned left, right, or go straight, the intersection is set as a guide intersection.

  Subsequently, the guidance point enlarged map forming processing means of the guidance processing means performs a guidance point enlarged map forming process, and before the vehicle reaches the guidance intersection, an enlarged view of the guidance intersection in a predetermined area of the map screen, that is, Then, an enlarged intersection map is formed as an enlarged guide map, and route guidance is performed using the enlarged map. Therefore, a guide point enlarged map display point is set at a position that is a set distance away from the guidance intersection on the searched route (on the vehicle position side), and the vehicle reaches the guide point enlarged map display point. Then, the intersection enlarged view is displayed.

  In this case, a map around the guidance intersection, a search route, and a landmark such as a facility that serves as a landmark at the guidance intersection are displayed on the enlarged intersection. In addition, intersections that join or branch at junctions or the like are set as guidance intersections on toll roads dedicated to automobiles such as expressways, city expressways, and toll roads.

  Then, the route guidance point setting processing means of the guidance processing means performs route guidance point setting processing, and one or more of the present information is provided at a location on the searched route that is a distance from each of the set distances before the guidance intersection. In the embodiment, when a plurality of route guidance points are set and the vehicle arrives at each route guidance point, the voice output processing means performs route guidance of contents set in advance for each route guidance point for the guidance intersection. The voice from the voice output unit 37, that is, a guidance phrase is output.

  By the way, when only the direction of the destination is known, the driver does not enter the destination, looks at the map screen, looks for information on the destination using signs, buildings, etc. The vehicle may be run up to.

  In that case, if it is found that the destination is located on the right or left side of the road where the vehicle is traveling around the destination, the vehicle is turned right or left at a predetermined intersection ahead of the vehicle position. However, if the road on which the vehicle is traveling is a travel-restricted road such as an elevated road, a bypass road, etc., if the vehicle is traveled along the travel-restricted road as it is, a right or left turn is made at the predetermined intersection. It is impossible to do so, and it is necessary to make a detour to reach the destination, or the driver feels stressed. Therefore, the vehicle cannot travel smoothly to the destination.

  Therefore, in the present embodiment, travel constraint information notification processing is performed by a travel constraint information notification processing unit (not shown) of the CPU 31, and information on travel constraints on a travel constraint road around the vehicle position, that is, travel constraint. Information is sent to the driver.

  FIG. 2 is a flowchart showing the operation of the travel constraint information notification processing means in the first embodiment of the present invention, FIG. 3 is a diagram showing the vicinity of the vehicle position in the first embodiment of the present invention, and FIG. FIG. 5 is a first diagram illustrating the operation of the travel constraint information notification processing unit according to the first embodiment of the present invention, and FIG. 5 is a second diagram illustrating the operation of the travel constraint information notification processing unit according to the first embodiment of the present invention. FIG. 6 is a third diagram showing the operation of the travel constraint information notification processing means in the first embodiment of the present invention. FIG. 7 is a travel constraint information notification processing means in the first embodiment of the present invention. It is a 4th figure which shows the operation | movement of.

  In the figure, pr is the vehicle position, ri (i = 1, 2,...) Is a road, crj (j = 1, 2,...) Is an intersection, and km (m = 1, 2,...) Is on the map screen. A key as a formed operation element, cu, is a cursor representing an operation location on the map screen.

  In this case, the road r1 among the roads ri is a travel restriction road, and a section between the intersections cr2 to cr4 on the road r1 is a travel restriction section where a right turn is restricted over 2 km. Road r1 and roads r2-r5 intersect at intersections cr1-cr4, and road r6 and roads r2, r3, r5 intersect at intersections cr5-cr7.

  The key k1 is a detail key for displaying a detailed map on the map screen, the key k2 is a wide area key for displaying a wide area map on the map screen, and the key k3 is notified of travel restriction information on the map screen. Constraint notification request key for requesting the key, key k5 specifies the travel constraint information to be notified, and the left turn key for specifying the travel constraint information of the travel constraint section where the left turn is constrained, key k6 is notified The right / left turn key for specifying the travel constraint information for specifying the travel constraint information of the travel constraint section in which the right turn and the left turn are restricted, the key k7 specifies the travel constraint information to be notified, and the travel constraint in which the right turn is restricted A right turn key for designating a section, key k8 is a notification release request key for requesting release of notification of travel restriction information. When the key k5 has a destination on the left side of the road on which the vehicle is traveling, the key k6 has a destination on the left or right side of the road on which the vehicle is traveling. In this case, the key k7 is displayed to be pressed when the destination is on the right side of the road on which the vehicle is traveling.

  In this case, when the driver is driving the vehicle while searching for the destination information, the operation determination processing means of the travel constraint information notification processing means performs the operation determination processing, and the key k3 is pressed by the driver. Wait for it.

  Then, it can be seen that the vehicle has reached the periphery of the destination, and the destination is on the right side of the road on which the vehicle is traveling. As shown in FIG. When the information is requested to be notified, the mode switching processing unit of the driving constraint information notification processing unit performs the mode switching processing and drives the driving constraint information from the standard mode in which the vehicle travels along the road where the driving is not restricted. The mode is switched to the travel restriction information notification mode to notify the person.

  Subsequently, the travel constraint information setting processing unit of the travel constraint information notification processing unit performs a travel constraint information setting process, and displays keys k5 to k7 on the map screen as shown in FIG. Prompt to identify travel constraint information. On the other hand, the driver determines whether the destination is on the left, in the vicinity of the left or right, or on the right when viewed from the road on which the vehicle is traveling, and the key Press k5-7. For example, when the driver presses the key k7, specifies the travel constraint information, and specifies the travel constraint information of the travel constraint section where the right turn is constrained, the travel constraint section determination processing means of the travel constraint information notification processing means Performs the travel restriction section determination process, reads the vehicle position pr, refers to the road data, and in the present embodiment, in front of the vehicle position pr, in the vicinity in front of the vehicle position pr, for example, the vehicle It is determined whether or not there is a travel restriction section in an area within a predetermined radius centered on the vehicle position pr. When there is a travel restriction section, the travel restriction information acquisition processing means of the travel restriction information notification processing means Constraint information acquisition processing is performed to read travel constraint information of a travel constraint section in which a right turn is restricted. In addition, when a predetermined section is restricted to turn right on a road on which a vehicle is traveling other than a travel-constrained road such as an elevated road, a bypass road, etc., the travel restriction information on the travel-constrained section is used as information on the section. Can be read out.

  Further, the travel restriction section determination processing means reads the vehicle position pr, refers to the intersection data and the road data, and determines whether or not the right turn of the vehicle is restricted at each intersection on the road on which the vehicle is traveling. The right turn of the vehicle is determined at each intersection over a predetermined distance, such as between the intersections cr2 and cr4, in the present embodiment, 500 [m] or more in a predetermined section ahead of the host vehicle position pr. In the case of restriction, the predetermined section can be set as a travel restriction section.

  Subsequently, the travel restriction section display processing means as the first notification processing means of the travel restriction information notification processing means performs the travel restriction section display processing as the first notification processing, as shown in FIG. The driver is notified of the travel constraint information by highlighting the travel constraint section. The highlighting is performed by changing the color of the road or blinking the road.

  Next, the travel road determination processing means of the travel constraint information notification processing means performs travel road determination processing to determine whether or not the vehicle is traveling on the travel constraint road. When the vehicle is traveling on a travel restriction road, the final intersection setting processing means of the travel restriction information notification processing means performs a final intersection setting process, and determines the final intersection on the road where travel is not restricted, that is, the final intersection. Set. In the present embodiment, the final intersection is also an intersection where the travel restriction section is started.

  Then, the final intersection warning point setting processing means of the travel constraint information notification processing means performs the final intersection warning point setting process, and at a place away from the final intersection (the vehicle position side) by a set distance, Set the final intersection notice point. Then, when the vehicle reaches the final intersection notice point, the voice output processing unit as the second notification processing unit of the travel restriction information notification processing unit performs the voice output processing as the second notification processing, and the final intersection As shown in FIG. 7, the route guidance having the preset contents is voiced from the voice output unit 37, that is, with a guidance phrase such as “If you pass this intersection, you cannot turn right after 2 km”. By outputting, the driver is notified of the travel constraint information so as to avoid the travel constraint section.

  In this way, the route guidance for the travel restricted section is output to the driver by the guidance phrase from the voice output unit 37. In addition, the said travel restriction area can be divided into levels according to distance, and a guidance phrase can be varied for every level.

  Subsequently, the operation determination processing means waits for the key k3 to be pressed again by the driver.

  As described above, in the present embodiment, when there is a travel restriction section around the vehicle position pr, the travel restriction section is highlighted on the map screen, so the driver uses the travel restriction section. And the vehicle can be driven.

  In addition, when the vehicle is traveling on a travel-restricted road, the driver is notified that travel is restricted in the travel-restricted section, so the driver must make a detour to reach the destination. The vehicle can be smoothly traveled to the destination without any trouble or stress on the driver.

Next, a flowchart will be described.
Step S1: The process waits until the constraint notification request key is pressed. If the constraint notification request key is pressed, the process proceeds to step S2.
Step S2 A mode switching process is performed.
Step S3 A travel restriction information setting process is performed.
Step S4 Highlight the travel restriction section.
Step S5: It is determined whether or not the vehicle is traveling on a travel restricted road. If the vehicle is traveling on the travel restricted road, the process proceeds to step S6. If the vehicle is not traveling on the travel restricted road, the process returns to step S4.
Step S6: It is determined whether or not the final intersection notice point has been reached. If the final intersection notice point has been reached, the process proceeds to step S7. If not, the process returns to step S4.
Step S7 The driver is notified by voice guidance.
Step S8: It is determined whether or not the constraint notification request key has been pressed again. If the constraint notification request key is pressed again, the process returns to step S4. If not pressed, the process ends.

  By the way, when driving the vehicle toward the destination, the driver drives the vehicle in the direction of the destination, but the road in a direction different from the direction of the destination in front of the vehicle position. May be curved. In that case, turn the vehicle to the right or left at the intersection at the end of the curve and drive the vehicle again in the direction of the destination, but the driver loses the sense of direction or reaches the destination. In order to do this, it is necessary to make a detour or the driver feels stress, and the vehicle cannot be smoothly driven to the destination.

  Accordingly, a second embodiment of the present invention will be described in which when the road curves ahead of the vehicle position, the driver can be notified of this. In addition, about the thing which has the same structure as 1st Embodiment, the same code | symbol is provided and the effect of the same embodiment is used about the effect of the invention by having the same structure.

  FIG. 8 is a flowchart showing the operation of the travel constraint information notification processing means in the second embodiment of the present invention, FIG. 9 is a diagram showing the vicinity of the vehicle position in the second embodiment of the present invention, and FIG. FIG. 11 is an explanatory diagram of the approach angle at the intersection in the second embodiment of the present invention, FIG. 11 is a first diagram showing the operation of the travel constraint information notification processing means in the second embodiment of the present invention, and FIG. FIG. 13 shows the operation of the travel constraint information notification processing means in the second embodiment of the invention, and FIG. 13 shows the third operation of the travel constraint information notification processing means in the second embodiment of the present invention. FIG.

  In the figure, pr is the vehicle position, ri ′ (i ′ = 11, 12,...) Is a road, crj ′ (j ′ = 11, 12,...) Is an intersection, and km ′ (m ′ = 11, 12,. ) Is a key as an operation element formed on the map screen, and cu is a cursor representing an operation location on the map screen. The road r11 and the roads r12 to r14 intersect at intersections cr11 to cr13.

  In this case, as shown in FIG. 10, when the approach road of the intersection cr12 on the road r11 is denoted by ra and the approach road of the intersection cr13 immediately after the intersection cr12 is denoted by rb, the approach roads ra and rb are The angle formed can be expressed by the road curve angle θ, and it is determined in advance whether or not the road curve angle θ is 45 ° or more when creating the road data, and the road curve angle θ is 45 ° or more. In this case, the sections of the intersections cr12 and cr13 are travel restriction sections where the travel of the vehicle is restricted, and are recorded in the data recording unit 16 as an information recording unit. In FIG. 9, the road r1 curves to the left, but even if the road r1 curves to the right, it is regarded as a travel restriction section.

  Further, a key k11 is a detail key for displaying a detailed map on the map screen, a key k12 is a wide area key for displaying a wide area map on the map screen, and a key k13 is notified of travel restriction information on the map screen. A restriction notification request key for requesting the key, and a key k14 is a notification cancellation request key for requesting cancellation of the notification of the travel restriction information.

  In this case, when the driver is driving the vehicle in a predetermined direction while searching for the destination information, in this embodiment, the operation of the travel restriction information notification processing means is performed. The determination processing means waits for the key k13 to be pressed by the driver.

  Then, as shown in FIG. 11, when the driver presses the key k13 and requests that the travel restriction information be notified, the mode switching processing means causes the vehicle to travel along a road where travel is not restricted. The mode is switched from the standard mode to a travel constraint information notification mode for notifying the driver of travel constraint information.

  Subsequently, the travel constraint section determination processing means reads the vehicle position pr, refers to the road data, and in front of the vehicle position pr in the present embodiment, for example, in the vicinity ahead of the vehicle position pr, for example, , It is determined whether or not there is a travel restriction section in a region within a predetermined radius centered on the vehicle position pr, and when there is a travel restriction section, the travel restriction information acquisition processing means Read information.

  Further, the travel restriction section determination processing means reads the vehicle position pr, refers to intersection data and road data, and at least a second predetermined distance, for example, in a predetermined section on the road on which the vehicle is traveling, It is determined whether there is no intersection that can change the traveling direction over 300 [m], and whether the section is greatly curved, there is no intersection that can change the traveling direction over 300 [m], and When the section is greatly curved, the predetermined section is set as a travel restriction section.

  Then, as shown in FIG. 12, the travel constraint section display processing means highlights the travel constraint section (the section from the intersection cr12 to the intersection cr13 on the road r11), thereby displaying the travel constraint information to the driver. Notice. The highlighting is performed by changing the color of the road or blinking the road.

  Next, the final intersection setting processing means sets a final intersection on a road where travel is not restricted, that is, a final intersection (intersection cr12). In the present embodiment, the final intersection is also an intersection where the travel restriction section is started.

  Then, the final intersection warning point setting processing means sets the final intersection warning point at a position that is a distance away from the final intersection (the vehicle position side) by a set distance. Then, when the vehicle reaches the final intersection notice point, the voice output processing means, as shown in FIG. 13, for the final intersection, the voice output unit serving as the second output unit provides route guidance with preset contents. 37, that is, “If you pass this intersection, the direction of travel will change 45 ° to the left at the next intersection.” Will be output to the driver. The travel restriction information is notified so as to avoid it.

  In this way, the route guidance for the travel restricted section is output to the driver by the guidance phrase from the voice output unit 37. In addition, the said travel restriction area can be divided into levels according to distance, and a guidance phrase can be varied for every level.

  Subsequently, the operation determination processing means waits for the key k13 to be pressed again by the driver.

  As described above, in the present embodiment, when there is a travel restriction section around the vehicle position pr, the travel restriction section is highlighted on the map screen, so the driver uses the travel restriction section. And the vehicle can be driven.

  Further, when the vehicle is traveling, if there is a travel restriction section ahead of the host vehicle position pr, the travel restriction information in the travel restriction section is notified to the driver by a guidance phrase, so that the driver has a sense of direction. The vehicle can be smoothly traveled to the destination without losing, having to make a detour to reach the destination, or feeling stressed by the driver.

Next, a flowchart will be described.
Step S11 Wait for the constraint notification request key to be pressed. If the constraint notification request key is pressed, the process proceeds to step S12.
Step S12: A mode switching process is performed.
Step S13 The travel restriction section is highlighted.
Step S14: It is determined whether or not the final intersection notice point has been reached. If the final intersection notice point has been reached, the process proceeds to step S15. If not, the process returns to step S13.
Step S15 The driver is notified by voice guidance.
Step S16: It is determined whether or not the constraint notification request key has been pressed again. If the constraint notification request key is pressed again, the process returns to step S13, and if it is not pressed again, the process ends.

  In the present embodiment, there is no intersection where the traveling direction can be changed over at least the second predetermined distance, for example, 300 [m], and a section that is largely curved is included in the travel restriction section. However, there is no intersection that can turn right over at least a second predetermined distance, for example, 300 [m], and a section that is largely curved to the left, and at least a first predetermined distance, for example, 500 A section that does not have an intersection that can turn left over [m] and is curved to the right can be included in the travel restriction section.

  In the present embodiment, the travel constraint information of the travel constraint section cannot be specified, but the travel constraint information of the travel constraint section is specified as in the first embodiment, It is possible to specify the travel constraint information of the travel constraint section that is largely curved to the left, or to specify the travel constraint information of the travel constraint section that is curved to the right. In that case, a left curve key, a right curve key, and the like for designating travel restriction information are displayed on the map screen.

  Further, in the first embodiment, a section in which a left turn or a right turn is restricted over at least a first predetermined distance, for example, 500 [m] or more is defined as a travel restriction section. In the second embodiment, There are no intersections that can change the direction of travel for at least a second predetermined distance, for example, 300 [m] or more, and a section that is largely curved is set as a travel restriction section. In the direction of travel over at least a first predetermined distance, for example, 500 [m] or more, or a section where left or right turns are restricted, or at least a second predetermined distance, for example, 300 [m] or more. A section that has no intersection that can be changed and that is largely curved can be set as a travel restriction section. And a section where there is no intersection where the traveling direction can be changed over at least the second predetermined distance, for example, 300 [m] or more, and the destination is a dead end can be set as a travel restriction section.

  Furthermore, there is no section where the left or right turn is restricted regardless of the distance, or at least a second predetermined distance, for example, 300 [m] or more, and there is no intersection where the traveling direction can be changed, and the curve is greatly curved. A section can be used as a travel restriction section.

  The present invention is not limited to the embodiments described above, and various modifications can be made based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

It is a block diagram which shows the navigation system in the 1st Embodiment of this invention. It is a flowchart which shows operation | movement of the driving | running | working restrictions information notification process means in the 1st Embodiment of this invention. It is a figure showing the periphery of the own vehicle position in the 1st Embodiment of this invention. It is a 1st figure which shows operation | movement of the driving | running | working restrictions information notification process means in the 1st Embodiment of this invention. It is a 2nd figure which shows operation | movement of the driving | running | working restrictions information notification process means in the 1st Embodiment of this invention. It is a 3rd figure which shows operation | movement of the driving | running | working restrictions information notification process means in the 1st Embodiment of this invention. It is a 4th figure which shows operation | movement of the driving | running | working restrictions information notification process means in the 1st Embodiment of this invention. It is a flowchart which shows operation | movement of the driving | running | working restrictions information notification process means in the 2nd Embodiment of this invention. It is a figure showing the periphery of the own vehicle position in the 2nd Embodiment of this invention. It is explanatory drawing of the approach angle in the intersection in the 2nd Embodiment of this invention. It is a 1st figure which shows operation | movement of the driving | running | working restrictions information notification process means in the 2nd Embodiment of this invention. It is a 2nd figure which shows operation | movement of the driving | running | working restrictions information notification process means in the 2nd Embodiment of this invention. It is a 3rd figure which shows operation | movement of the driving | running | working restrictions information notification process means in the 2nd Embodiment of this invention.

Explanation of symbols

14 Navigation device 15 GPS sensor 31 CPU
51 information center 63 network pr own vehicle position

Claims (9)

  A current location detection unit for detecting the vehicle position, basic information acquisition processing means for acquiring map data, and travel restrictions in which travel in a predetermined direction is restricted in front of the vehicle position with reference to the map data Road travel characterized by comprising travel restriction section determination processing means for determining whether there is a section and notification processing means for notifying an operator of travel restriction information of the travel restriction section when there is a travel restriction section Information notification system.   The road travel information according to claim 1, wherein the travel constraint section determination processing means determines that there is a travel constraint section when there is no intersection that can change the traveling direction for at least a predetermined distance ahead of the vehicle position. Notification system.   The travel constraint section determination processing means has no intersection where the traveling direction can be changed at least over a predetermined distance ahead of the host vehicle position, and the road immediately preceding the first point on the road within the predetermined distance. The road travel information notification system according to claim 1, wherein when the angle formed by the road immediately before the second point is equal to or greater than the threshold, it is determined that there is a travel restriction section.   The first point is a predetermined intersection, the second point is an intersection next to the predetermined intersection, and the travel restriction section determination processing means is the next intersection with respect to the approach road of the predetermined intersection. The road travel information notification system according to claim 3, wherein when the angle formed by the approach road is equal to or greater than a threshold, it is determined that there is a travel restriction section.   A current location detection unit for detecting the vehicle position, basic information acquisition processing means for acquiring map data, and travel restrictions in which travel in a predetermined direction is restricted in front of the vehicle position with reference to the map data A travel restriction section determination processing means for determining whether or not there is a section; and a notification processing means for notifying an operator of travel restriction information of the travel restriction section when there is a travel restriction section. The processing means can change the traveling direction over a second predetermined distance shorter than the first predetermined distance when there is no intersection that can change the traveling direction over the first predetermined distance in front of the vehicle position. Road travel information, characterized in that it is determined that there is a travel restriction section when there is no complete intersection and the change in the angle of the road on the road within the second predetermined distance is equal to or greater than a threshold value Knowledge system.   The road travel information notification system according to claim 1, wherein the notification processing unit highlights the travel restriction section.   The said notification process means notifies a driving | running | working restrictions information to an operator, when the final intersection notice point set before the intersection used as the starting point of a driving | running | working restrictions area is reached. Road driving information notification system.   Detects the vehicle position, acquires map data, refers to the map data, determines whether there is a travel restriction section in front of the vehicle position that is restricted to travel in a predetermined direction, and travels A road travel information notification method that notifies the operator of travel constraint information of a travel constraint section when there is a constraint section.   A basic information acquisition processing means for acquiring map data, a map with reference to the map data, and a travel restriction section where travel in a predetermined direction is restricted ahead of the vehicle position detected by the current location detection unit A program that functions as a travel restriction section determination processing means for determining whether or not there is a travel restriction section and a notification processing means for notifying an operator of travel restriction information of the travel restriction section when there is a travel restriction section.

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