JP2010181265A - Navigation system and program for navigation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To create and update appropriate road data even when temporary alterations have been made to roads. <P>SOLUTION: In the presence of a deviation from a road 71 on which one is traveling, a travel track 72 is stored until one returns to the road, and it is determined whether the travel deviation from the road 71 is caused by a temporary road alteration or not. When it is caused by a temporary road alteration, road data in the section between a start point 72a and a terminal point 72b of the travel track 72 is not deleted, but a non-display flag is added to road data of the section with the road data of the section as an old road to exclude the old road 71' from display. Temporary road data is created on the basis of the travel track and stored as a substitute road 72', and displayed instead of the road section 71' excluded from display. When a vehicle has traveled on the old road 71 after this, the old road 71, which has been excluded from display, is returned to an object to be displayed, and the substitute road 72', which has been displayed instead, is immediately deleted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a navigation device and a navigation program, and more particularly to addition and change of new road data.

2. Description of the Related Art Navigation devices that are mounted on vehicles and that guide a vehicle by searching for a travel route to a destination are widely used. In this navigation device, the current position of the vehicle is specified, the current position of the vehicle is displayed on a map, and travel guidance is provided.
In such a navigation device, when a road that is not included in map data is traveled, a technique for registering as a new road from a travel locus has been proposed (Patent Document 1).

However, since the technique described in Patent Document 1 only registers a road not included in the map data as a new road, for example, a road is temporarily changed like a detour road temporarily provided by road construction or the like. Even if it is done, it will be registered as a new road.
For this reason, during the road construction period, not only both the original road and the detour road exist, but both roads exist after the road construction is finished (temporary road change is finished). There is a problem that roads that do not exist (the original road during the construction period and the detour road after the completion of construction) remain as data.

On the other hand, when new road data is created according to the travel locus when the vehicle deviates from the road, the original data can be deleted.
However, if it is a temporary detour road due to road construction as described above, the original data has already been deleted if the original road is passed again after the construction is completed. It is necessary to create road data again as a safe road.

JP-A-9-189559

  Accordingly, an object of the present invention is to create and update appropriate road data even when there is a temporary road change.

(1) In the invention described in claim 1, when it is determined that the vehicle has deviated from the road on which the vehicle has deviated, and the deviating determination unit determines that the vehicle has deviated from the road, the cause of the deviation is temporarily Cause judging means to judge whether or not it is due to a major road change, and when it is judged to be a temporary road change, the road of the deviated section is not displayed and replaced by the travel locus of the vehicle that deviated There is provided a navigation device comprising road changing means for creating and displaying a road.
(2) In the invention described in claim 2, when the current position acquisition means for acquiring the current position of the vehicle and the acquired current position of the vehicle are within the road section to be hidden, The navigation apparatus according to claim 1, further comprising a road restoration unit that eliminates the non-display of the road in the section and deletes the alternative road created corresponding to the road in the section. To do.
(3) In the invention according to claim 3, the cause determining means determines whether or not the road is temporarily changed when the vehicle deviates from the road and returns to any one of the roads. A navigation device according to claim 1 or claim 2 is provided.
(4) In invention of Claim 4, it has an image pick-up part which picturizes the circumference of vehicles, and the cause judging means is based on the picked-up image picked up along the run locus, and the cause which deviated temporarily The navigation apparatus according to claim 1, wherein the navigation apparatus determines whether the road change section is involved or not.
(5) In the invention according to claim 5, when it is determined that the vehicle has deviated from the road by the escape determination function for determining whether the vehicle has deviated from the running road, the cause of the departure is a temporary road Cause determination function to determine whether or not it is due to a change, and when it is determined that the road has changed temporarily, the road in the section that has deviated is not displayed, and an alternative road is displayed from the traveling locus of the vehicle that deviated Provided is a navigation program characterized by having a computer realize a road change function to be created and displayed.

  According to the present invention, when it is determined that the cause of deviating from the road is a temporary road change, the road in the deviated section is not displayed, and the alternative road is determined from the traveling locus of the vehicle that has deviated. Since it is created and displayed, appropriate road data can be created and updated.

It is a system configuration figure of a navigation device in this embodiment. It is explanatory drawing about the display state of the road by a road change process and a restoration process. It is a flowchart showing the content of the road change process. It is a flowchart showing a recovery process.

Hereinafter, preferred embodiments of the navigation device and the navigation program of the present invention will be described in detail with reference to FIGS.
(1) Outline of the embodiment In this embodiment, when the vehicle deviates from the traveling road, the traveling locus until the vehicle returns to the road is stored, and whether or not the cause of the vehicle deviating from the road is due to a temporary road change. Determine whether.
If it is a temporary road change, the road data of the section from the start point to the end point (the point returned from the point off the road) of the travel locus is not deleted, but the road data of the section is changed to the old road. As a result, the old road is excluded from display by attaching a non-display flag to the road data of the section.
Further, temporary road data is created from the travel locus, stored as an alternative road, and displayed instead of the road section that is not displayed.

Thereafter, when the vehicle travels on the old road, the old road that has been excluded from the display target is returned to the display target, and the alternative road that has been displayed instead is immediately deleted.
Thereby, it is possible to display appropriate road data for a temporary road change and to quickly restore the original road because the old road is not deleted.

(2) Details of Embodiment FIG. 1 is a system configuration diagram of a navigation apparatus to which this embodiment is applied.
The navigation device is mounted on a vehicle and includes a current position detection device 10, an information processing control device 20, an input / output device 40, and an information storage device 50 as shown in FIG.
First, the current position detection device 10 has the following configuration. The absolute direction sensor 11 is, for example, a geomagnetic sensor that detects in which direction the vehicle is located based on detection of the N direction based on a magnet, and may be any means that detects the absolute direction.
In the present embodiment, when the vehicle deviates from the traveling road, the travel locus traveled until returning to the original road or returning to another road is determined based on the vehicle position data detected by the current position detection device 10. Temporarily held in the RAM 24. The held travel locus is stored in the road change data file 58 when it is determined that the road is temporarily changed.

The relative azimuth sensor 12 detects, for example, whether or not an intersection is bent, and may be an optical rotation sensor attached to a rotating part of a handle, a rotational resistance volume, or an angle sensor attached to a wheel part.
Further, a gyro sensor that detects a change in angle using an angular velocity may be used. That is, any means capable of detecting an angle that has changed relative to the reference angle (absolute direction) may be used.
The distance sensor 13 may be, for example, one that detects and counts the rotation of a wheel, or one that detects acceleration and integrates twice. That is, any means capable of measuring the moving distance of the vehicle may be used.

The GPS (Global Positioning System) receiver 14 is a device that receives a signal from an artificial satellite, and includes various signals such as signal transmission time, position information of the receiver, moving speed of the receiver, and traveling direction of the receiver. Information can be obtained.
The beacon receiving device 15 is a device that receives a signal transmitted from a transmitting device installed at a specific point. In particular, VICS information can be obtained, and information related to vehicle travel such as traffic jam information, current position information, and parking lot information can be obtained.

The data transmission / reception device 16 is a device for communicating with the outside of the vehicle using a telephone line or radio waves and exchanging information.
For example, there are various usage methods such as a car phone, ATIS, VICS, GPS correction, and inter-vehicle communication, and it is possible to input / output information related to traveling.

  Next, the information processing control device 20 performs calculation and control based on information input from the current position detection device 10 and the input / output device 40 and information stored in the information storage device 50, and displays the calculation result on the display 42. , A means for controlling to output to the output means such as the printer 43 or the speaker 44.

The information processing control device 20 has the following configuration.
The central processing unit (CPU) 21 performs overall calculation and control of the entire navigation device.
The first ROM 22 stores programs related to navigation, particularly navigation programs related to detection of the current position, route search, display guidance, and the like, and various programs such as a road change processing program and a recovery processing program in the present embodiment.
The sensor input interface 23 is a means for receiving information from the current position detection device 10.

The RAM 24 stores information input by the user such as destination information and passage point information input by the input device 41, which will be described later, and results calculated by the CPU 21 based on the user input information, It is a storage means for storing a route search result or map information read from the information storage device 50.
The communication interface 25 is a means for inputting / outputting information from the current position detection device 10, particularly information obtained from the outside.

The second ROM 26 stores a program related to navigation, particularly a navigation program related to voice guidance. Note that the first ROM 22 and the second ROM 26 may be configured by one common ROM.
The image processor 27 is processing means for processing the vector information processed by the CPU 21 into image information.
The clock 28 keeps time.
The image memory 29 is means for storing image information processed by the image processor 27.
The audio processor 30 processes the audio information read from the information storage device 50 and outputs it to the speaker 44.

The input / output device 40 includes an input device 41 for inputting data such as a destination, a passage point, and search conditions by a user, a display 42 for displaying an image, a printer 43 for printing information, a speaker 44 for outputting sound, and surrounding monitoring. The camera 45 is configured. The input device 41 includes, for example, a touch panel, a touch switch, a joystick, a key switch, and the like.
The display 42 displays a map around the current location and a travel route to the destination.

The peripheral monitoring camera 45 is composed of one or a plurality of CCD cameras that capture 360 degrees around the vehicle.
The periphery monitoring camera 45 is imaged when the vehicle deviates from the traveling road, and is used when it is determined whether or not there has been a temporary road change. When a display object or the like indicating that construction is underway is detected in the captured image, it is determined that there has been a temporary road change.
In addition, when it is set as the structure which judges whether it is a temporary road change only from another element, this periphery monitoring camera 45 is unnecessary.

The information storage device 50 is connected to the information processing control device 20 via the transmission path 45.
The information storage device 50 includes a map data file 51, an intersection data file 52, a node data file 53, a road data file 54, a photo data file 55, a destination data file 56, a guidance point data file 57, a road change data file 58, and others. The data file 59 is stored.
The information storage device 50 is generally composed of an optical storage medium such as a DVD-ROM, a CD-ROM, or a magnetic storage medium such as a hard disk, but various types such as a magneto-optical disk and various semiconductor memories. You may comprise with an information storage medium.
Information that needs to be rewritten may be constituted by a rewritable hard disk or flash memory, and other fixed information may be a ROM such as a CD-ROM or DVD-ROM.

  The map data file 51 stores map data such as a national road map, a road map of each region, or a house map. The road map is composed of roads such as main arterial roads, expressways and narrow streets, and ground targets (facility etc.). A house map is a city map in which a figure representing an outer shape of a ground structure, a road name, and the like are displayed. The narrow street is, for example, a relatively narrow road having a road width equal to or less than a predetermined value below a national road or prefectural road.

  The intersection data file 52 contains data related to intersections such as the geographical position coordinates and names of the intersections, and the road data file 54 includes data related to roads such as the position and type of roads, the number of lanes, and connection relationships between the roads. The data file 55 stores image data of photographs showing places where visual indications such as various facilities, sightseeing spots, or major intersections are required.

In the road change processing according to the present embodiment, when a temporary road change due to road construction or the like is detected, a road in a predetermined section (a section from the start point to the end point of the travel history data) is not displayed as an old road. Become.
Here, “non-display” in the present invention means that the road in the predetermined section is displayed separately from the display in the original state, and typically the case where the road is not displayed on the display 42 corresponds. In addition, the case where the road is displayed with a dotted line or the case where the road is displayed lighter than usual is also included.
For a non-displayed road section (old road), a non-display flag for instructing non-display on the road in the corresponding road data file 54 is attached. The road data itself of the corresponding old road may be moved from the road data file 54 to the road change data file 58.
The road section to which the non-display flag is attached is not displayed on the display 42, but may be displayed in a distinguishable manner by displaying it with a dotted line or lightly.

The old road with the non-display flag is stored with the ID of the alternative road stored in the road change data file 58 in order to display the alternative road created from the travel locus instead of the old road. The
The data for specifying the old road and the corresponding alternative road data may be collectively stored in the road change data file 58.

The node data file 53 stores node data representing geographic coordinate data of each node used for route search on a map.
For example, a road connection point such as an intersection is represented by a node, and a road between the connection points (that is, a non-branching area of the road) is represented by a link. In this way, it functions as route data representing the connection relation of the node data route.
In addition, each link is given an attribute indicating that the travel is restricted by traffic regulation such as entry prohibition or one-way traffic.

The destination data file 56 stores data such as locations and names of places and facilities that are likely to be destinations such as major tourist spots, buildings, and companies / businesses described in the telephone directory. Yes. The guidance point data file 57 stores guidance data of points where guidance is required, such as the contents of guidance display boards installed on the road and guidance of branch points.
The road change data file 58 stores alternative road data created from the travel locus in the road change process. Each alternative road is assigned an alternative road ID for taking correspondence with the old road.

In the navigation device configured as described above, route guidance is performed as follows.
The navigation device detects the current position with the current position detection device 10, reads map information around the current position from the map data file 51 of the information storage device 50, and displays it on the display 42.
When the destination is input from the input device 41, the information processing control device 20 searches for (calculates) a plurality of travel route candidates from the current position to the destination, and displays them on the map displayed on the display 42. When the driver selects one of the travel routes, the travel route is acquired by storing the selected travel route in the RAM 24 (travel route acquisition means).

The information processing control device 20 travels by transmitting the current vehicle position (or input departure point) and destination to the information processing center and receiving a travel route to the destination searched for by the information processing center. A route may be acquired. In this case, communication of the destination and the travel route is performed by wireless communication via the communication interface 25.
Further, a travel route from the departure place to the destination is searched using an information processing device such as a personal computer at home, etc., stored in a storage medium such as a USB memory, and acquired through the storage medium reader. You may do it. The storage medium reading device in this case is connected to the information processing control device 20 via the transmission path 45.

When the vehicle travels, route guidance is performed by tracking the current position detected by the current position detection device 10.
The route guidance specifies the vehicle position on the map by map matching between the road data corresponding to the searched travel route and the current position detected by the current position detection device 10, and displays a map around the vehicle current position on the display 42. In addition to the display, the searched travel route and the current position are displayed on the map.
Also, based on the relationship between the searched travel route and the current position, the necessity of guidance, that is, whether or not guidance for a travel route such as a predetermined route change point and direction guidance is necessary when straight traveling continues for a predetermined distance or more, etc. Judgment is made, and if necessary, display on the display 42 and voice guidance are executed.

Next, road change processing and restoration processing for responding to temporary road changes according to the present embodiment will be described.
FIG. 2 shows a road display state by road change processing and restoration processing according to the present embodiment.
As shown in FIG. 2A, it is assumed that the road 71 deviates from the middle of traveling and returns to the original road 71 along a traveling locus 72 indicated by a dotted line. In FIG. 2A, reference numeral 73 denotes a current position mark representing the current position of the vehicle.
The information processing control device 20 accumulates the travel locus data from the time when the travel locus starts at the starting point 72a to the end point 72b and stores the captured image around the vehicle by the periphery monitoring camera 45.

When the information processing control device 20 recognizes an image indicating that the construction is in progress in the captured image, the information processing control device 20 determines that the vehicle has traveled on an alternative road by road construction or the like.
Then, the information processing control device 20 creates an alternative road 72 ′ having a predetermined width for detouring a construction section having a predetermined width according to the travel locus data.

In order to hide the display of the section of the road 71 from the starting point 72a to the ending point 72b, a non-display flag is attached to the corresponding road data.
Thereby, as shown by a dotted line in FIG. 2B, the road section 71 ′ from the base point 72a to the end point 72b of the road 71 is not displayed. On the other hand, instead of the non-displayed road section 71 ′, the created alternative road 72 is displayed on the screen.
Note that the road section 71 ′ from the base point 72a to the end point 72b may not be hidden at all, but may be another display for indicating that the vehicle cannot pass due to a temporary change. For example, the display may be lighter than the normal road display, may be displayed with a dotted line, or an X mark or a construction in progress may be displayed inside both starting points of the road.

  Thereafter, when traveling on the section of the road 71 corresponding to the non-displayed road section 71 ′, the information processing control device 20 immediately stops displaying the alternative road 72 ′ as shown in FIG. A road 71 is displayed.

Next, the details of the road change process and the restoration process for responding to the temporary road change according to the present embodiment will be described.
FIG. 3 is a flowchart showing the contents of the road change process.
The information processing control device 20 monitors whether the vehicle has deviated from the road corresponding to the road data while the vehicle is running (step 10).
Whether or not the vehicle has deviated from the road is determined to have deviated from the road when, for example, the vehicle bends more than a certain angle without a turning operation (such as a turn-on operation) and deviates from the road on the road data by map matching.

When the information processing control device 20 determines that the vehicle has deviated from the road (step 10), it accumulates the travel locus from the deviated point in the RAM 24, and starts to image the surroundings of the vehicle by the peripheral monitoring camera 45. ) Is stored in the RAM 24 (step 11).
The accumulation of the travel locus and the captured image continues until returning to any road (step 12). Whether or not the vehicle has returned is determined not only when returning to the original road but also when returning to another road.

When returning to one of the roads (step 12; Y), the information processing control device 20 determines whether or not the reason for traveling away from the road on the road data is a temporary road change (step). 13).
As to whether or not there has been a temporary road change, the captured image stored in the RAM 24 is analyzed, and if there is an image indicating that the road is under construction, it is determined that there has been a temporary road change.
Examples of images showing the construction of roads include, for example, images of signs and fences indicating construction in progress, red cone post images, orange fence images, scraped road paint images, road construction equipment images, etc. Is the target.

In the present embodiment, whether or not the road is temporarily changed is determined from an image captured by the periphery monitoring camera 45, but may be determined by the following method.
(A) Judging from the shape of the travel locus. That is, if the trajectory (road) that travels off the original road is sharply curved and returns to the original road within a predetermined distance, it is determined that the road is temporarily changed.
(B) When construction is scheduled in the city plan, it is determined that the road is temporarily changed if the vehicle is traveling in the planned construction section. The construction plan in this case is acquired in advance from an information center or the like by wireless communication, or is acquired from construction information transmitted from the road while traveling.
(C) Judgment is made by any two combinations or all combinations of the judgment based on the captured image according to the present embodiment and the judgments based on the above (a) and (b). In this case, each determination is made, and if it is determined that there is a temporary road change in any one of the determinations, it is concluded that there has been a temporary road change.

  If it cannot be determined that there has been a temporary road change (step 13; N), the information processing control device 20 deletes the travel locus and captured image stored in the RAM 24 (step 14), and returns to the main routine. .

On the other hand, if it is determined that there has been a temporary road change (step 13; Y), the information processing control device 20 updates the road displayed on the display 42 (step 15) and returns to the main routine.
That is, in the road update, the information processing control device 20 uses the travel locus stored in the RAM 24 (the travel locus starting from the point where the road data deviates from the road with the road data and returning to the road with any road data as the end point). ) Is created and given a predetermined alternative road ID, and is stored in the road change data file 58.

  In addition, the information processing control device 20 applies to the section from the start point of the alternative road (start point of the travel locus) to the end point (end point of the travel locus) in the road data of the original road (old road) corresponding to the created alternative road. On the other hand, a non-display flag is attached and an alternative road ID of the corresponding alternative road is attached.

When the road around the current position is displayed on the display 42, the information processing control device 20 determines whether or not a non-display flag is attached to the road data in the display area, and if the non-display flag is attached. The old road of the section is excluded from the display target, and the alternative road for the alternative road ID attached to the old road is read from the road change data file 58 and displayed.
Thereby, even when the road is temporarily changed due to construction or the like, the old road can be hidden and the alternative road can be appropriately displayed.

Next, restoration processing when the temporarily changed road is restored will be described with reference to the flowchart of FIG.
The information processing control device 20 monitors whether or not the vehicle is traveling on the original road while the vehicle is traveling (step 21).
That is, the information processing control device 20 determines whether or not the vehicle is traveling on the old road without traveling on the alternative road from the current position of the vehicle detected by the current position detection device 10.
If the vehicle is not traveling on the original road (step 21; N), the information processing control device 20 returns to the main routine.

On the other hand, when the vehicle is traveling on the original road (on the old road) (step 21; Y), it is determined that the construction is completed, and the information processing control device 20 immediately displays the display 42. Return from the alternative road to the old road (step 22).
That is, the information processing control device 20 deletes the non-display flag and the alternative road ID attached to the old road corresponding to the current position of the vehicle.

  In addition, the information processing control device 20 deletes the data of the alternative road stored in the road change data file 58 corresponding to the road that has been temporarily changed corresponding to the current position, that is, the deleted alternative road ID. (Step 23), the process returns to the main routine.

As described above, according to the navigation device of the present embodiment, when the vehicle deviates from the running road, it is determined whether or not it is due to a temporary road change due to road construction or the like. In some cases, an alternative road is created and displayed from the running track, and the original road that is the target of road construction is not deleted, but a hidden flag is attached, so that road construction is completed. Hide the road section until the reason for the temporary road change is resolved.
On the other hand, when the vehicle travels on the hidden road section, it immediately recovers from the non-display target, displays the original road, and deletes the alternative road.
Thereby, when there is a temporary road change, an appropriate road can be displayed. Further, when the vehicle travels on the original road after the temporary road change is completed, the original road can be quickly restored.

Note that the present invention is not limited to the described embodiment, and various modifications are possible.
For example, in the embodiment described above, it is determined whether or not the road is temporarily changed in units of roads, but may be determined in units of lanes.
That is, even when a sign indicating that the construction is deviating from the road that is running is detected, only the lane in the traveling direction is under construction, and the opposite lane can be traveled. There is a case.
Therefore, the information processing control device 20 creates and displays an alternative lane road for the lane in the traveling direction (excluding the oncoming lane), and hides the road (the old lane road) in the section. And

Further, in the embodiment described above, it is determined whether or not the road change is a temporary change from the image data captured by the peripheral monitoring camera 45. However, as described in the above (b), the construction is scheduled in the city planning. You may make it judge from whether it exists.
In this case, if the construction information acquired from the information center or the like includes the construction period or construction completion date, the restoration processing (deletion of the old road hidden flag and alternative road ID, (Deletion of alternative road data) may be performed.

  In addition, when combining with the determination based on the captured image (the embodiment described) and the determination from the shape of the travel locus (in the case of (a) above), the original road section (old road) is replaced before the construction completion date. If it is determined that the vehicle is traveling, it is immediately restored as road construction has been completed.

DESCRIPTION OF SYMBOLS 10 Present position detection apparatus 20 Information processing control apparatus 40 Input / output apparatus 45 Perimeter monitoring camera 50 Information storage apparatus 58 Road change data file

Claims (5)

A deviation judging means for judging whether or not the vehicle has deviated from the running road;
A cause determination means for determining whether the cause of the departure is due to a temporary road change when it is determined that the departure determination means has deviated from the road;
Road change means for creating and displaying an alternative road from the travel trajectory of the vehicle that has deviated and not displaying the road of the deviated section when it is determined as a temporary road change,
A navigation device comprising:
Current position acquisition means for acquiring the current position of the vehicle;
When the acquired current position of the vehicle is within the road section to be hidden, the alternative created in correspondence with the road of the section is canceled while the road of the section is hidden. The navigation apparatus according to claim 1, further comprising road restoration means for deleting the road.
The cause determination means determines whether or not the road is temporarily changed when the vehicle deviates from the road and returns to any road.
The navigation device according to claim 1 or 2, wherein
Comprising imaging means for imaging the surroundings of the vehicle;
The cause determining means determines whether or not the cause of the deviation is due to a temporary road change section, based on a captured image captured along the travel locus.
The navigation device according to claim 1, claim 2, or claim 3.
A deviation judgment function that judges whether or not it has deviated from the running road,
A cause determination function for determining whether the cause of the departure is due to a temporary road change when it is determined that the departure from the road is caused by the departure determination function;
When it is determined that the road has changed temporarily, the road change function that hides the road in the section that has deviated and creates and displays an alternative road from the travel locus of the vehicle that has deviated,
A navigation program characterized by causing a computer to realize the above.

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