JP3818217B2 - Navigation device and program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation device that performs route guidance.
[0002]
[Prior art]
A vehicle-mounted navigation device (so-called car navigation device) is well known as one of navigation devices that can execute route guidance by a user inputting a destination. A conventional in-vehicle navigation device uses a current location based on position information such as GPS or a point arbitrarily set by a user as a departure point, an address input by a user or a point arbitrarily specified on a map displayed on a display. As a destination, the arithmetic device calculates a recommended route based on map information such as a CD-ROM, and the route guidance is performed by displaying the calculated recommended route on a display or by guiding it by voice.
[0003]
However, when the recommended route is calculated based on the map information only and the route guidance is performed in this way, the actual route is not reflected in traffic conditions such as traffic jams and construction conditions. It was not always a route that could reach the destination.
[0004]
Therefore, in recent years, traffic information around the current location as described in JP-A-62-95423, JP-A-2-129800, JP-A-8-83399, etc. has been received, and the traffic information is used for route guidance. On-vehicle navigation devices that provide route guidance by reflecting information have been sold. In general, traffic information is received via FM broadcasting, optical beacons, radio beacons, mobile phones, and the like.
[0005]
[Problems to be solved by the invention]
However, in order to execute route guidance in consideration of traffic information in such a navigation device, it is assumed that a destination is set and a recommended route to the destination is set. If it is not set, it was not possible to execute the detour guidance taking traffic information into consideration.
[0006]
In general, the driver uses the on-vehicle nuggage device when the first place to visit is a destination or when the driver is not sure about the route. In other words, if the driver is familiar with the destination, or if he / she is confident in the route, he / she usually feels bothered in setting the destination and does not use the route guidance function. It is.
[0007]
Therefore, if you are going to a place you are used to or are confident in the directions, route guidance with a destination will not be provided. The driver will choose whether to take a detour. At that time, the driver often gets lost in the choice of going through the traffic jam or detouring, encountering further traffic jam on the road that passed to avoid the traffic jam, or getting lost on the road passed to avoid the traffic jam There was also. In addition, it is possible to set a destination in the navigation device for the first time when it is known that there is a traffic jam and guide the route on a detour, but the setting operation is troublesome.
[0008]
The present invention has been made in view of such a problem, and even if the route is not being guided, that is, even if the user does not set the destination, the traffic is expected to be encountered. An object of the present invention is to provide a navigation device or the like that automatically executes route guidance that avoids obstacles.
[0009]
[Means for Solving the Problems and Effects of the Invention]
The navigation device according to claim 1, which has been made in order to solve the above-described problems, provides guidance even if the route to the destination set by the user is not being routed when the receiving means receives the information on the traffic fault. The means determines whether or not the traffic obstacle is on the predicted route of the navigation device, and if the traffic obstacle is on the predicted route, the intersection on the predicted route ahead of the location of the traffic obstacle is determined as the destination. And a navigation device that performs route guidance by calculating a detour route avoiding traffic obstacles. The predicted route here is a route estimated from, for example, a traveling direction or a past traffic locus.
[0010]
For this reason, for example, when the destination is not set in the navigation device, for example, when going to a place where you are accustomed to go, that is, when you are expected to encounter a traffic obstacle even if you are not in route guidance, the traffic obstacle Route guidance that avoids is executed, and the user can know an appropriate detour route.
[0012]
Also The guidance means obtains a straight line distance between the current location and the location of occurrence of the traffic obstacle before judging whether or not the traffic obstacle is on the predicted route, and the judgment is performed only when the distance is equal to or less than a predetermined distance. Is supposed to do . Needless to say, when the distance is equal to or longer than the predetermined distance, the determination is not performed, the detour route is not calculated, and the route guidance is not executed.
[0013]
For this reason , Detour route guidance for traffic obstacles occurring at a position farther than a predetermined distance from the current location I can't. Therefore , Provide detour routes that are less important to users Without Probability that detour route guidance will be executed for traffic obstacles that will not be encountered Is less .
[0014]
Claims 2 As described in, if the traffic obstacle is on the predicted route as a result of determining whether or not the traffic obstacle is on the predicted route, the guide means further travels along the predicted route to the traffic obstacle. Only when the distance is less than or equal to a predetermined distance, the detour route may be calculated and route guidance may be performed. Needless to say, when the distance is equal to or longer than the predetermined distance, the bypass route is not calculated and the route guidance is not executed.
[0015]
With such a navigation device, it is possible to calculate the distance from the current location to the point of occurrence of a traffic fault more accurately to prevent guidance of a detour that is less important for the user, and to bypass a traffic fault that is not encountered The probability that the guidance will be executed is reduced.
[0016]
Claims 1 And claims 2 In this case, the predetermined distance may be a fixed value such as 1 km or 4 km. 3 As described above, the predetermined distance may be arbitrarily set by the user using the receiving means.
If this is the case, for example, the moving speed is often slow in the city center, so a short distance is set, and the moving speed is often high in the suburbs, so a long distance is set to guide the detour route. be able to. Therefore, since the user can appropriately set the predetermined distance according to the situation in the area of use, etc., it is possible to effectively prevent guidance of a detour route that is less important to the user.
[0017]
Further, the predetermined distance is claimed. 4 As described in (1), the guide means may be changed and used according to the current location. This is, for example, determining which area the current location belongs to (for example, the city center and suburbs), selecting the distance of the corresponding area from the distances set in advance for each area, or based on the average moving speed in the near future Multiply the coefficient by the standard value to find the distance. And the guidance means uses the distance obtained as a result.
[0018]
In this way, it is possible to effectively prevent guidance of a detour route that is not important for the user, and the range of traffic obstacles to be detoured is changed without user operation. Therefore, it is easy to use.
On the other hand, claim instead of distance 5 The number of intersections may be used as described in. That is, as a result of determining whether or not the traffic obstacle is on the predicted route, the guide means further obtains the number of intersections on the predicted route up to the traffic obstacle, and determines the intersection. Only when the number is equal to or less than a predetermined number, the navigation device may calculate a detour route and perform route guidance. Needless to say, when the number of intersections is equal to or greater than a predetermined number, no detour route is calculated and route guidance is not performed.
[0019]
With such a navigation device, guidance of a detour route for a traffic fault occurring at a position farther than a predetermined number of intersections from the current location is not performed, and guidance of a detour route that is less important to the user is prevented. be able to.
The predetermined number of intersections may be a fixed value such as 3 or 5, for example. 6 As described above, the predetermined number of intersections may be arbitrarily set by the user using the receiving means.
[0020]
In this case, for example, the average moving speed is often slow in the city center, so a larger number of intersections is set, and in the suburbs, the average moving speed is often high. Can be executed. Therefore, since the user can appropriately set the predetermined number of intersections according to the situation in the area of use, etc., it is possible to effectively prevent guidance of a detour route that is less important to the user.
[0021]
Further, the predetermined number of intersections is claimed 7 As described in (1), the guide means may be changed and used according to the current location. This is, for example, determining which area (for example, the city center or suburb) the current location belongs to, and selecting the number of intersections in the corresponding area from the number of intersections set in advance for each area, or the average moving speed in the near future The number of intersections is obtained by multiplying the coefficient based on the standard value. The guide means uses the number of intersections obtained as a result.
[0022]
In this way, it is possible to effectively prevent guidance of a detour route that is not important for the user, and the range of traffic obstacles to be detoured is changed without user operation. Therefore, it is easy to use.
In addition, when determining the target traffic obstacle based on the distance to the point of occurrence and when determining the target traffic obstacle based on the number of intersections to the point of occurrence Depending on the situation, it is difficult to say that either one is superior.
[0023]
By the way, the guidance means may always execute route guidance when there is a traffic obstacle that satisfies the condition in the received traffic information. 8 As described in the above, before starting the route guidance for the detour route, the guidance unit informs the user of the outline of the detour route and asks the user whether or not to perform the route guidance, and the accepting unit asks the user whether or not to perform the route guidance. The route guidance may be executed when an instruction to execute the route guidance is received. At that time, the route information of the detour may be displayed on a display device such as a display, or the route information of the detour may be read out by voice to inquire the user. And it is good for the user to operate a remote controller, a touch panel, etc., or to be able to select whether or not to perform route guidance by voice input to a microphone. It should be noted that, when the selection is not made by the user for a certain period of time, it may be determined that the selection is made so as to guide the detour route. Of course, it may be determined that it is selected not to guide the detour route.
[0024]
In such a case, do not guide the detour route when the user does not want to pass the detour route for some reason or when the detour route does not make sense because the expected route is not appropriate. Can improve usability.
By the way, as a result of calculating the detour route by the guide means, if a plurality of detour routes are listed as candidates, 9 As described above, it is preferable that a detour route that is estimated to be able to return to the predicted route in the shortest time is selected and guided. In addition, what is necessary is just to obtain | require the calculation method of the time for this detour route, for example by multiplying the average speed estimated from a traffic road by a distance.
[0025]
In this way, the delay in arrival time due to detours can be minimized, which is convenient for the user.
Claims 10 As described above, a detour route that is estimated to be able to return to the predicted route in the shortest distance may be selected and guided.
[0026]
Even in this case, an increase in distance due to detouring can be minimized, and as a result, delay in arrival time can be minimized, which is convenient for the user.
In addition, the selection of the detour route is a claim. 11 As described above, the user may be notified of the outline of all or part of the detour route, and may be guided to the detour route corresponding to the selection result of the user accepted by the accepting means. In this notification method, the detour route information may be displayed on a display device such as a display, or the detour route information may be read out by voice and inquired of the user. Then, the user may be able to select a detour route by operating a remote controller, a touch panel, or the like, or inputting a voice into a microphone.
[0027]
If this is the case, the detour route can be selected according to the user's preference, and the detour route can be selected in consideration of the user's experience and the like, and more appropriate route guidance can be executed.
Each means constituting the navigation device may be realized by hardware, but 12 As shown in FIG. 6, the navigation apparatus may be realized as a program for causing a computer to function.
[0028]
When realized by such a program, it can be used by recording on a computer-readable recording medium such as a magnetic disk, a magneto-optical disk, a memory card, etc., and loading and starting the computer as necessary. It can also be used by loading and starting up via a network.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a car navigation apparatus will be described. The embodiments of the present invention are not limited to the following examples, and it goes without saying that various forms can be adopted as long as they belong to the technical scope of the present invention.
[0030]
FIG. 1 is a block diagram showing the configuration of a VICS (Vehicle Information and Communication System) center 10 and a car navigation device 20.
The VICS center 10 transmits traffic information such as traffic jam information and accident information to the car navigation device 20 via FM broadcasting, optical beacons, radio beacons and the like.
[0031]
The car navigation device 20 includes a position detector 21 that detects the current position of the vehicle, an operation switch group 22 for inputting various instructions from the user, and a remote control that can input various instructions in the same manner as the operation switch group 22. Inputs map data and the like from a terminal (hereinafter referred to as a remote control) 23a, a remote control sensor 23b for inputting a signal from the remote control 23a, an external information input device 24, and an external storage medium storing map data and various types of information A map data input device 25, a display device 26 for displaying a map and various information, a voice output device 27 for outputting various guide voices, the position detector 21 and the operation switch group 22 described above. , The remote controller 23a, the external information input device 24, and the map data input device 25 execute various processes in response to the input from the position detector 2 , The operation switch group 22, the remote control sensor 23b, the external information input device 24, a map data input unit 25, display unit 26, a control circuit 29 for controlling the audio output device 27.
[0032]
The position detector 21 receives a radio wave transmitted from an artificial satellite for GPS via a GPS antenna and detects the position, direction, speed, etc. of the vehicle, and the magnitude of the rotational motion applied to the vehicle. Is provided, a distance sensor 21c for detecting the distance traveled from the longitudinal acceleration of the vehicle, etc., and a geomagnetic sensor 21d for detecting the traveling direction from the geomagnetism. Each of the sensors 21a to 21d has an error having a different property, and is configured to be used while complementing each other. Depending on the accuracy, a part of the sensors described above may be used, or a steering rotation sensor, a wheel sensor of each rolling wheel, or the like may be used.
[0033]
As the operation switch group 22, a touch panel installed on the display screen, mechanical key switches provided around the display device 26, and the like are used. Note that the touch panel and the display device 26 are laminated and integrated, and there are various types of touch panels, such as a pressure-sensitive method, an electromagnetic induction method, a capacitance method, or a combination of these methods. May be.
[0034]
The external information input device 24 receives traffic information from the VICS center 10 via an antenna (not shown). The received traffic information is sent to the control circuit 29 for processing.
The map data input device 25 is a device for inputting various data including so-called map matching data, map data, mark data, and intersection data for improving the accuracy of position specification. As a recording medium for these data, a CD-ROM or DVD is generally used because of the amount of data, but another medium such as a magnetic storage device such as a hard disk or a memory card may be used.
[0035]
The display device 26 is a color display device, such as a liquid crystal display, a plasma display, or a CRT, any of which may be used. The display screen of the display device 26 includes a mark indicating the current location identified from the current position of the vehicle detected by the position detector 21 and the map data input from the map data input device 25, a guidance route to the destination, and a name. Additional data such as landmarks and various facility marks can be displayed in an overlapping manner. Also, facility guides can be displayed. The voice output device 27 can output facility guidance and various guidance voices input from the map data input device 25, and traffic information reading voice received via the external information input device 24.
[0036]
The control circuit 29 is configured around a well-known microcomputer including a CPU, ROM, RAM, I / O and a bus line connecting these configurations. Based on a program stored in the ROM and RAM, A map for calculating the current position of the vehicle as a set of coordinates and traveling directions based on each detection signal from the position detector 21 and displaying a map or the like near the current position read via the map data input device 25 on the display device 26 Based on the display processing and the point data stored in the map data input unit 25, the destination facility is selected according to the operation of the operation switch group 22 or the remote controller 23a, and the optimum route from the current position to the destination is automatically selected. It is possible to perform route guidance processing for performing route guidance by performing route calculation to be obtained automatically.
[0037]
In the present invention, the external information input device 24 corresponds to the receiving means, the display device 26, the audio output device 27, and the control circuit 29 mainly correspond to the guiding means, and the operation switch group 22 corresponds to the receiving means. This corresponds to the remote controller 23a.
Next, a detour route guidance process executed when traffic information is received from the VICS center 10 in a state where the car navigation device 20 is not executing the route guidance process will be described with reference to the flowchart of FIG.
[0038]
First, in S100, it is determined whether or not the received traffic information includes traffic fault information. If there is traffic fault information in the traffic information, the process proceeds to S110, and if there is no traffic fault information in the traffic information, the process ends. Incidentally, as traffic obstacles, for example, traffic jam information, accident information, construction information, etc. can be considered.
[0039]
In S110, the predicted travel route of the vehicle on which the car navigation device 20 is mounted is calculated. For example, it is conceivable that the current traffic road is predicted to proceed as it is, and that route is set as the predicted travel route. At that time, if there is a branching point, it is better to predict that it will go to the wider side, or that it will pass through specified routes such as national and prefectural roads. Further, in the case of having a function of holding past travel route information, the past travel route may be used as the predicted travel route using the information.
[0040]
In subsequent S120, it is determined whether or not there is a traffic fault on the predicted travel route calculated in S110. If there is a traffic fault on the predicted travel route, the process proceeds to S130, and if there is no traffic fault on the predicted travel route, the process is terminated.
In S130, a road distance between the point of occurrence of a traffic fault on the predicted travel route and the current location is calculated, and if the distance is smaller than a preset reference distance, the process proceeds to S140, and if it is larger, This process ends. The reference distance is set to 3 km as a default value, but can be changed by operating the operation switch group 22 or the remote controller 23a. Moreover, you may determine by the number of the intersections from a present location to the generation | occurrence | production point of a traffic fault instead of determining by distance. Also in this case, it is preferable that the number of intersections can be changed by operating the operation switch group 22 or the remote controller 23a.
[0041]
In S140, a detour route is calculated. This detour route is a route avoiding traffic obstacles from the current location to the destination, with the intersection on the predicted travel route ahead of the point of occurrence of the traffic obstacle as the destination. The Dijkstra method or the like is used as a route calculation method.
[0042]
In the subsequent S150, the process branches depending on whether or not the detour path can be calculated in S140. If even one detour route can be calculated, the process proceeds to S160, and if no detour route can be calculated, this process ends.
In S160, five routes (only if there are no five routes) are selected from the detour routes calculated in S140 in the order of returning to the predicted route in a short time, and an overview of each route is displayed on the display device 26. At that time, a display is provided with a sign so that which route is selected or which route is not selected can be selected by the operation switch group 22 or the remote controller 23a. As an outline, for example, it is conceivable to list the names of intersections that make a right turn or a left turn, or to display a detour route superimposed on map display data. Moreover, what is necessary is just to obtain | require the time to return to an estimated driving | running route, for example by multiplying the average speed estimated from a traffic road by the distance of a detour route.
[0043]
In subsequent S170, the input information of the code indicating the type of the detour route input by the user using the operation switch group 22 or the remote controller 23a while referring to the display device 26 or the input information indicating that no detour route is selected is acquired. To do.
In the subsequent S180, the process branches depending on whether or not an input indicating that no bypass route is selected in S170. If an input indicating that no detour route is selected has been made, this processing ends, and a code indicating any detour route is input without input indicating that no detour route is selected. If so, the process proceeds to S190.
[0044]
In S190, route guidance for a detour route corresponding to the code acquired in S170 is performed. Route information is displayed on the display device 26, and voice is output from the voice output device 27 to provide route guidance. When the route guidance end point (the destination set on the predicted route) is reached, this processing ends.
[0045]
Next, an example of route guidance for a detour route will be specifically described using the map shown in FIG. Lines drawn in the horizontal direction and the vertical direction on the paper indicate roads, and the intersections indicate intersections. It is assumed that there is a traffic congestion point 400 between the intersection 340 and the intersection 360, and the vehicle is located at the current location 200 and traveling in the direction of the arrow 205. The traffic information was received when the vehicle was located at the current location 200.
[0046]
When the traffic information is received, it is determined whether or not the received traffic information includes traffic fault information (corresponding to S100 in FIG. 2). If traffic obstacle information is included, an expected travel route is calculated (corresponding to S110 in FIG. 2). In this example, since the vehicle travels in the upward direction, the predicted travel route is calculated as current location 200 → intersection 310 → intersection 340 → intersection 360.
[0047]
Next, it is determined whether or not a traffic fault occurrence point is included on the calculated predicted travel route (corresponding to S120 in FIG. 2). In this example, since the traffic congestion point 400 is between the intersection 340 and the intersection 360, it is determined that a traffic fault occurrence point is included on the predicted travel route.
[0048]
Subsequently, it is determined whether or not the distance from the current location to the point of occurrence of the traffic fault is within a predetermined distance (corresponding to S120 in FIG. 2). In this example, it is assumed that the distance is within a predetermined distance. Instead of determining by distance, it may be determined by the number of intersections from the current location to the point of occurrence of a traffic fault.
[0049]
Subsequently, a detour route is calculated using the intersection 360 on the predicted route ahead of the traffic congestion point 400 as a destination (corresponding to S140 in FIG. 2). In this example, the present location 200 → the intersection 310 → the intersection 320 → the intersection 330 → the intersection 350 → the intersection 360 and the detour route B that is the current location 200 → the intersection 310 → the intersection 340 → the intersection 330 → the intersection 350 → the intersection 360 Assume that it has been calculated.
[0050]
Subsequently, the calculated two detour routes are displayed on the display device 26 (corresponding to S160 in FIG. 2). As a method of displaying an outline, a method of listing intersection names, a method of displaying a detour route on a map, and the like can be considered. A bypass route selected by the user based on the outline of the bypass route displayed on the display device 26 is guided (corresponding to S170 to S190 in FIG. 2). Here, assuming that the above-described detour route A is selected by the user, the car navigation apparatus 20 guides the route of current location 200 → intersection 310 → intersection 320 → intersection 330 → intersection 350 → intersection 360.
[0051]
As described so far, according to the present car navigation device 20, for example, when the destination is not set in the car navigation device 20 as when going to a place that is usually used, that is, route guidance is not being performed. However, when it is predicted that a traffic obstacle will be encountered, route guidance for avoiding the traffic obstacle is executed, and the user can know an appropriate detour route.
[0052]
Further, as a result of determining whether or not the traffic obstacle is on the predicted route, if the traffic obstacle is on the predicted route, the distance along the predicted route to the traffic obstacle is further obtained, and the distance is determined to be a predetermined distance. Only when the distance is less than or equal to the distance, the detour route is calculated and route guidance is performed. Reduced execution of detour route guidance.
[0053]
Since the predetermined distance can be arbitrarily set by the user using the operation switch group 22 or the remote controller 23a, the predetermined distance can be changed depending on the area of use, for example, and is set as a detour target. It is possible to appropriately adjust the range of traffic obstacles and effectively prevent guidance of a detour route that is less important to the user.
[0054]
The bypass route is selected by notifying the user of the outline of the bypass route using the display device 26, so that the user can arbitrarily select the bypass route using the operation switch group 22 or the remote controller 23a. It has become. For this reason, it may be estimated from the user's experience that the other route can be detoured in a shorter time than the optimum route calculated by the car navigation device 20, and the user's experience is taken into account in such a case. It is easy to use because it is possible to select a detour route.
[0055]
In the present embodiment, the detour route guidance process executed when the traffic information is received from the VICS center 10 in a state where the route guidance process is not executed has been mainly described. However, the user sets the destination. Needless to say, when the traffic information is received in the state where the route guidance to the destination is being executed, the route guidance in consideration of the traffic obstacle as conventionally performed is executed.
[0056]
Other embodiments will be described below.
(1) In the above embodiment, after calculating the predicted travel route, it is determined whether or not the detour route is calculated by obtaining the path distance on the predicted travel route to the traffic fault. Before calculating, calculate the straight line distance from the current location to the point where the traffic obstacle occurred, and calculate the expected travel route only when the distance is within the predetermined distance to determine whether the traffic obstacle is on the expected travel route You may make it do. Even in such a case, the same effect as in the above embodiment can be obtained, and the processing for obtaining the predicted travel route considered to have a high calculation cost can be reduced.
[0057]
(2) When there are a plurality of traffic obstacles on the predicted travel route, the detour route may be calculated so as to avoid the plurality of traffic obstacles. If it becomes like this, it can bypass more effectively.
(3) In the above-described embodiment, a predetermined reference distance is used when determining whether or not a traffic obstacle is a target for calculating a detour route. The reference distance can be changed by operating the operation switch group 22 or the remote controller 23a by a user. However, the car navigation device 20 itself may be used by changing the reference distance according to the current location. Specifically, for example, an area of the current location is acquired from the map data input device 25, and if the area is an area that is generally estimated to have a low moving speed, such as the city center, a reference distance set in advance A short distance is selected, and if it is an area where the moving speed is estimated to be fast, such as a suburb, a long distance is selected from preset reference distances. Then, the determination is performed using the selected reference distance. In addition, the reference distance may be obtained by multiplying the coefficient corresponding to the area by the reference value, or the reference distance itself may be acquired from the map data input device 25. . Moreover, the average moving speed of the own vehicle may be obtained, and a coefficient based on the average moving speed may be multiplied by the standard distance and used. As a specific example, when the average moving speed is 30 km / h, a reference distance obtained by multiplying a standard distance 10 km by a coefficient 0.5 determined in advance corresponding to the average moving speed 30 km / h. Use 5km.
[0058]
If this is the case, it is possible to appropriately select the traffic obstacles to be bypassed without user operation, so that it is possible to prevent guidance of a bypass route that is less important to the user without deteriorating usability. Can do.
(4) Since the detour route guidance process is executed when traffic information is received in the above embodiment, the following problems may occur when the frequency of receiving traffic information is low. It was not covered by the calculation of the detour route because it was initially located in a distant traffic obstacle, but it approached the traffic obstacle over time, and then encountered the traffic obstacle before receiving traffic information. This is the case. In such a case, the traffic trouble once received is memorized so that the guidance of the detour route can be properly executed, and the expected driving route is periodically obtained without receiving new traffic information. It may be configured to determine whether or not there is a traffic obstacle on the route and obtain a detour route for guidance. In this case, even when the frequency of receiving traffic information is low, or when the predicted travel route changes from when the traffic information is received, the detour route is appropriately guided and the usability is improved.
[0059]
It is also possible to obtain an expected travel route when approaching a stored traffic obstacle for a certain distance, determine whether or not there is a traffic obstacle on the expected travel route, and obtain a detour route for guidance. .
(5) It may be determined whether or not to perform route guidance for a detour route depending on the degree of traffic obstruction. For example, when the length of the traffic jam is 1 km or more, route guidance for the detour route may be executed. If it becomes like this, a more effective detour route can be guided.
[0060]
(6) Although the present invention is applied to the car navigation device 20 in the above-described embodiment, the present invention may be applied to a mobile phone, a mobile terminal, or the like having a function of grasping position information and acquiring traffic information.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an outline of a car navigation device and a VICS center.
FIG. 2 is a flowchart showing a detour route guidance process.
FIG. 3 is a map for explaining guidance of a detour route.
[Explanation of symbols]
10 ... VICS Center
20 ... Navigation device
21 ... Position detector
21a ... GPS receiver
21b ... Gyroscope
21c Distance sensor
21d: Geomagnetic sensor
22 ... Operation switch group
23a ... remote control
23b ... Remote control sensor
24. External information input device
25 ... Map data input device
26. Display device
27 ... Audio output device
29 ... Control circuit

Claims (12)

Receiving means for receiving information on a traffic fault to which information on the occurrence position is added;
A guide means for calculating a route from the current location to the destination and performing route guidance;
A receiving means for receiving information input by a user's operation;
A navigation device comprising:
Even if the route information to the destination set by the user is not being provided, the guidance unit obtains a linear distance between the current location and the location where the traffic obstacle occurs when the receiving unit receives the traffic obstacle information. Only when the distance is equal to or less than a predetermined distance , it is determined whether or not the traffic obstacle is on a route where the navigation apparatus is expected to move, and when the traffic obstacle is on the predicted route. A navigation apparatus characterized in that a route guidance is performed by calculating a detour route avoiding the traffic obstacle, with an intersection on the predicted route ahead of the traffic obstacle occurrence position as a destination. The navigation device according to claim 1, wherein
When the traffic obstacle is on the predicted route as a result of determining whether or not the traffic obstacle is on the predicted route, the guide means further includes a road distance on the predicted route to the traffic obstacle. And a route guidance is performed by calculating the detour route only when the distance is equal to or less than a predetermined distance. The navigation device according to claim 1 or 2 ,
The navigation apparatus according to claim 1, wherein the predetermined distance can be arbitrarily set by a user using the reception unit. The navigation device according to claim 1 or 2 ,
The navigation device according to claim 1, wherein the guide means changes the predetermined distance according to a current location. The navigation device according to claim 1, wherein
If the traffic obstacle is on the predicted route as a result of determining whether or not the traffic obstacle is on the predicted route, the guide means further determines the number of intersections on the predicted route to the traffic obstacle. The navigation apparatus characterized in that the route guidance is performed by calculating the detour route only when the number of intersections is less than or equal to a predetermined number. The navigation device according to claim 5 , wherein
The navigation apparatus according to claim 1, wherein the predetermined number can be arbitrarily set by a user using the receiving means. The navigation device according to claim 5 , wherein
The navigation device according to claim 1, wherein the guide means changes the predetermined number according to a current location. The navigation device according to any one of claims 1 to 7,
The guidance means informs the user of the outline of the bypass route before starting the route guidance of the bypass route and asks the user whether or not to perform the route guidance. A navigation apparatus characterized in that when a route guidance execution instruction is received, the route guidance is executed. In the navigation apparatus in any one of Claims 1-8 ,
The navigation device according to claim 1, wherein when there are a plurality of bypass routes, the guide means selects and guides a bypass route that is estimated to be able to return to the predicted route in the shortest time. In the navigation apparatus in any one of Claims 1-8 ,
The navigation device according to claim 1, wherein when there are a plurality of bypass routes, the guide means selects and guides a bypass route that is estimated to be able to return to the predicted route in the shortest distance. In the navigation apparatus in any one of Claims 1-8 ,
When there are a plurality of detour routes, the guide means informs the user of an overview of all or a part of the detour paths, and guides the detour paths corresponding to the user selection result received by the reception means. The navigation apparatus characterized by doing. Program for causing a computer to function as a navigation device according to any one of claims 1 to 11.

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