JP2001227965A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute guidance along an appropriate detour when a traffic jam occurs. SOLUTION: This navigation device executing the route guidance to a destination has a detour search means searching for the detours a detour display means displaying the detour searched by the detour searching means; a detour selection means for allowing an operator to select a desired detour from the displayed detours by the detour display means; and a detour guidance means executing the rout guidance of the detour selected by the detour selection means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation device for providing route guidance from a departure place to a destination.

[0002]

2. Description of the Related Art As a system for driving more comfortably, a navigation device for displaying a route to a destination has become widespread. The navigation device function has been improved year by year, and a navigation device that searches for a detour that is a route to the same destination different from a traveling guide route when a traffic jam occurs has appeared.

[0003]

However, in the conventional navigation device, the screen changes to the detour route guidance immediately after searching for the detour, and the user starts the detour route guidance. The user is not given the opportunity to determine which of the route before searching for the detour and the detour is to be selected. Depending on the result of the detour search, the user may want to travel on the original route before the search. For that purpose, there is a growing desire to compare and examine the retrieved detour route and the original route based on various criteria.

An object of the present invention is to solve such a problem, and it is an object of the present invention to provide a user with information on a detour, so that the user can determine whether to select a detour.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a navigation device for performing route guidance to a destination, wherein a detour search means for searching for a detour, and a search performed by the detour search means. Detour display means for displaying the detour that has been performed, detour selection means for the operator to select a desired detour from the detours displayed by the detour display means, and selection by the detour selection means And detour guidance means for guiding the route of the detour.

Further, the detour display means displays the detour on a scale that allows both the start point and the end point of the detour to be displayed at the same time.

In addition, there is provided a detour distance calculating means for calculating a traveling distance between the start point and the end point of the detour, and the detour display means displays the detour distance calculated by the detour distance calculating means. It is characterized by the following.

[0008] Further, there is provided traveling time estimating means for estimating a traveling time between the start point and the end point of the detour, and the detour display means displays the estimated traveling time estimated by the traveling time estimating means. Features.

[0009] Further, there is provided traffic signal information acquisition means for acquiring traffic signal information on a traffic signal existing between the start point and the end point of the detour, and the detour display means displays the traffic information acquired by the traffic information acquisition means. It is characterized by doing.

[0010] In addition, there is provided end point information obtaining means for obtaining end point information on an intersection at an end point of the detour, and the detour display means displays the end point information obtained by the end point information obtaining means. I do.

[0011] The apparatus may further include altitude information acquiring means for acquiring altitude information relating to altitude of the detour, wherein the detour display means displays the altitude information acquired by the altitude information acquiring means.

Further, the detour display means displays the target information in a three-dimensional view.

[0013] Further, the vehicle has running ease detecting means for detecting a level of ease of running in the detour, and the detour display means displays the running ease detected by the running ease detecting means. It is characterized by the following.

[0014] Further, during the guidance by the detour guide means, a main route traveling position estimating means for estimating a traveling position when traveling on the original route which is the original search route before the detour search, and the main route traveling And an estimated position display means for displaying the estimated travel position estimated by the position estimating means.

[0015] Further, during the guidance by the detour guide means, a main route traveling position estimating means for estimating a traveling position when the vehicle travels on the original route, which is the original search route before the detour search, When the vehicle arrives at a confluence with the main route, a distance difference display means for displaying a distance difference between the estimated travel position estimated by the main route travel position estimation means and the merge point is provided. I do.

An arrival time estimating means for estimating a time to arrive at a junction of the detour and the main route when the vehicle travels on the main route which is the original search route before the detour search; A time difference calculating means for calculating a time difference between a time at which the road and the route converge at a junction and an estimated arrival time estimated by the arrival time estimating means, and a time difference calculated by the time difference calculating means. And a time difference display means.

An arrival time estimating means for estimating a time to arrive at a junction of the detour and the main route when traveling on the main route which is the original search route before the detour search; A time difference calculating means for calculating a time difference between a time at which the road and the route converge with the route and an estimated arrival time estimated by the arrival time estimating means, and a time difference calculated by the time difference calculating means, The present invention is characterized in that there is provided a notifying means for notifying in a different notification form depending on whether the estimated arrival time has a later value or an earlier value.

[0018]

Next, an embodiment of the present invention will be described. FIG. 1 is a configuration diagram showing a configuration of a navigation device according to an embodiment of the present invention. The navigation device 1 according to the embodiment of the present invention is mounted on an automobile and used like a normal navigation system. 2 is a G that detects a position by receiving a signal from a satellite.
PS (Global Positioning System) receiver, GP
A signal from the S satellite is received, the position is calculated by a predetermined calculation process, and the calculated position is output to the microcomputer (microcomputer) 7. 3 is VICS (Vehicle Information and Co.)
A wireless device for receiving road traffic information such as a mmunication system, and outputs the received data to the microcomputer 7. 4
Is a distance sensor that detects a traveling distance, and is realized by a magnetic sensor or the like configured by a magnet that rotates with the axle of the automobile and a reed switch that switches a connection state according to a change in a magnetic field. The corresponding travel distance signal is output to the microcomputer 7. As the distance sensor, a speed sensor used for controlling an engine of an automobile or the like can be used. Reference numeral 5 denotes a direction sensor that outputs a signal corresponding to the direction of the traveling direction of the vehicle to the microcomputer 7, a sensor including a direction magnet using a geomagnetic field, and a gyro that integrates a gyro signal that detects a change in direction of the vehicle. It is composed of sensors and the like. 6 is a GPS installed in each part of the car
This is an interface for connecting signal lines such as the receiver 2, the VICS receiver 3, the distance sensor 4, and the direction sensor 5 to a data transmission bus of the main body of the navigation device 1 provided with the microcomputer 7.

Reference numeral 7 denotes a microcomputer, a GPS receiver 2, a VIC
S receiver 3, distance sensor 4, direction sensor 5, input device 1
Signals from the PC 1 are input to calculate the position of the own vehicle, determine the state of the own vehicle, process display data, and the like based on stored programs. The map data is input, and a map, an enlarged view of an intersection, a course direction, an own vehicle position, and the like are displayed on the display unit 14. The microcomputer 7 performs calculations and processes, or detects the operating environment of the navigation device.
It comprises a ROM 8 in which programs and various data are stored, and a RAM 9 for temporarily storing data for storing and calculating data to be processed. The RAM 9 is always supplied with power, and its stored data is always held.

An input device 11 is provided on the front side of a push button switch and a display to allow a user to set a destination, issue a command for a route search, and set operating conditions of the navigation device. It consists of a touch panel, keyboard, joystick, mouse, etc. 12
A CD-ROM player reads necessary map data from the CD-ROM 13 in response to an instruction from the microcomputer 7 and outputs the map data to the microcomputer 7. The CD-ROM 13 stores not only data on roads but also data on the locations and types of various facilities (restaurants, gas stations, convenience stores, service areas, parking areas, etc.). Reference numeral 14 denotes a display for displaying an image in accordance with a display signal from the microcomputer 7, which is constituted by a liquid crystal display element or the like, and displays a map, a vehicle position, and the like. Reference numeral 15 denotes a sound generation circuit that outputs a sound in accordance with a sound output signal (digital signal) from the microcomputer 7, and includes a DA converter, an amplifier, a speaker, and the like.

Next, a search for a detour route, which is a feature of the navigation device 1 in the present embodiment, a detour information display method for displaying information on the detour found, and an operator detouring from the displayed detour A display operation of a selection method for selecting a road will be described with reference to the drawings. FIG. 2 to FIG. 11 show information on the route to the destination or the searched detour, the operator makes a selection based on the display, and further displays the result of traveling on the selected detour or this route before the search. FIG. 4 is a diagram showing a screen display state of the display 14 up to this point.

FIG. 2 shows a search route to the destination (this route).
The screen display state (normal guidance display) of the indicator 14 traveling along R1 is shown. In this normal guidance display, the own vehicle position mark 19 is displayed at various roads and at positions corresponding to the own vehicle position, but other routes (R2, R2,
R3, R4,) are displayed in bold lines and in different colors so that they can be distinguished from R3, R4). In addition, for a congested road, the congested section is displayed so as to be identifiable, for example, by changing the display width or display color, or by using a hatched display. A detour switch display 20 for instructing whether or not to search for a detour is provided in a predetermined portion (lower right portion in this example) of the screen.
｛If the corresponding display is selected using the input device 11 (the color of the selected one changes), and a decision operation (using the input device 11) is performed in that state, the function corresponding to the display is selected. Is displayed. Then, if "delete" (detour search) on the detour switch display 20 is selected and operated,
The detour is selected, and the screen transits to a detour information selection screen displaying a detour as shown in FIG. In the case where the vehicle continues to travel along the route (main route) R1 which has been traveled without performing the detour search, the user can select "No" (do not search for a detour) to operate the detour switch display 20. Disappears. However, when the vehicle continues to travel in the congested section, the detour switch display 20 is redisplayed. Therefore, for a user who is worried about redisplay, a redisplay interval instruction display that does not stop the display until a few minutes is displayed at the same place. You. Therefore, "10 minutes later", "20 minutes later", "3 minutes"
If any one is selected from "0 minutes later", a method can be realized in which the detour switch 20 is not redisplayed until the time comes. When the vehicle passes through the traffic congestion section or when the traffic congestion is resolved (when the traffic congestion detector stops detecting the traffic congestion), the detour switch display 20 disappears and disappears.

In the displays shown in FIGS. 3 to 10, the vehicle position mark 19 is displayed on the route until the route is not selected (another route is selected). The screen display in which the route is distinguished from other routes (displayed in bold lines and in different colors) is continued as it is.

FIG. 3 shows a detour information selection screen, which is a screen state of the display 14 when "detour search" of the detour switch display 20 is selected and operated in the screen state of the normal guidance display of FIG. Although the detour candidates 1 and 2 (the number of detour candidates may be one or three or more), the display map changes to a scale capable of displaying all sections including the start point and the end point (in this example, FIG. It is displayed at the same scale with this route (at twice the scale). Also on this screen, this route is displayed in bold and the color is changed to be the same as that of FIG. 2 so as to be distinguished from the detour.

In this screen display, the approximate distance of the detour and the present route, the position and the number of left and right turns of the detour can be estimated, but other detailed information is not displayed. Therefore, in order to see detailed detour information as a clue for selecting a detour, a detour information switch displayed on a predetermined portion of the screen (changes to a position easy to see depending on the drawing position and shape of the detour, but in the lower right in this example). When the user selects and operates the "see" (see the detour information) 21 as shown in FIG. 5, a detour information item selection screen asking which information item of the detour information is required as shown in FIG. Move on to When the user selects "not see" (does not see detour information) on the detour information switch display 21, the screen moves to FIG.

FIG. 4 shows a screen for selecting the route / detour.
The screen is such that the user can immediately select either the route or the detour (by selecting the route selection switch display 22). 4 will be described in detail later.

FIG. 5 shows a detour information item selection screen, which is a screen display state for asking what kind of route information one wants to know before selecting a detour or this route. In the screen, a predetermined portion (in the present example, the lower right portion is changed to a position easy to see depending on the drawing position of the detour route) is changed to the information item selection switch display 23, but the other portions are the same as those in FIG. In the information item selection switch display 23, "mileage" 24- "close"
There are seven operation button displays up to 30. The “travel distance” 24 is the travel distance of each detour and this route, and the “travel time” 25
Is the same as the travel time, the "traffic light" 27 is the number of traffic lights on each detour and this route, and the "end point" 28 is the end point of each detour, that is, the signal at the intersection that merges with this route, the merging method or the shape of the intersection. Information, "Altitude" 28 is information on the altitude difference between each detour and this route, and "Ease of driving" 29 is a level obtained by numerically expressing the ease of running on each detour and this route based on certain factors. Is displayed with a certain easy-to-determine sign. When the above button display is selected and operated, the information described above regarding the button display is changed to a display (FIGS. 6, 7, 8, 9, and 10) attached to each detour or this route. In addition, "mileage"
By simultaneously selecting 24 and “running time” 25, FIG.
In "running distance" and "running time" of each route are displayed simultaneously. If the "traffic light" 26 and the "end point" 27 are operated at the same time, information on the "traffic light" and "end point" of each route is simultaneously displayed in FIG.

As another operation method, when only the button display of the item to be displayed in the information item selection switch display 23 is operated and selected, the screen shown in FIG. 6 is displayed.
6 to 7 by selecting and operating "to the next screen" of the screen switching display 31 of a predetermined portion, and FIGS. 7 to 8 by selecting and operating to "to the next screen" of the screen switching display 31 in FIG. The method of transiting to can also be realized. If this operation is repeated, the transition from FIG. 8 to FIG. 9 is made in order. However, the screen of the display diagram showing the display of the detour information not selected is skipped. Also, if "previous screen" of the screen changeover switch display 31 is selected and operated on the screens shown in FIGS. 6 to 9, the screen is shifted one screen at a time between FIGS. However, the screen of the display diagram showing the display of the detour information not selected is skipped.

FIG. 6 is a display screen of traveling distance and time, in which information on the traveling distance and traveling time of the present route and the detour is attached to the side of each route. A branch point (start point) between the present route and the detour 1, a start point between the present route and the detour 2, (a start point of the present route and the detour 3 if there is a third detour), A junction (end point) between the route and the detour 1, an end point between the present route and the detour 2,
(The confluence of this route and the detour 3) is marked with ●. From the first starting point in the traveling direction from the position of the vehicle, to the common ending point of each route (the merging point common to each candidate route, the merging point between this route and each detour, and the junction between the detour and other detours The traveling distance and traveling time of the section up to the common junction including the point and the final junction (in the case of the detour 2 shown in the figure, in the case of the detour 2 shown), the vehicle travels in reverse from the own vehicle position and enters the detour 2 Travel distance and travel time in this case), this route, the detour 1 and the detour 2
The color and decoration format are changed so that they are easy to recognize. A screen switching display 31 is provided at a predetermined portion (lower right portion in this example) of the screen.
If the user selects and operates the “previous screen” on the display screen shown in FIG. 5, the screen returns to the screen shown in FIG. If "close screen" is selected, the process returns to FIG.

FIG. 7 shows a traffic signal and end point display screen. Information on the approximate position and number of traffic signals on the route and the detour is shown between the branch point and the junction of each route to provide information for route selection. It is a display figure. ● (If the location is too narrow to indicate the position, the leading end of the lead of ●) is the approximate location of the traffic light installation location, and the number of ● is the number of traffic lights installed. In addition, ○ (the end of the drawing line of ○ when the location is small and it is difficult to indicate the position) is the junction of the detour with no traffic light and this route (in the case of ●, there is a traffic light). A balloon indicating the number of junctions (for example, there are three intersections with traffic lights) is also displayed. In addition, a balloon (for example, a traffic light is present at the junction from the detour or not at the junction) indicating information about the end point (junction point) of the present route and each detour is displayed at the end point (junction point). The method of merging at the end point is a control merging by a traffic light, or an autonomous merging in which one signal flashes red and the other signal flashes yellow to join a traffic break, even if there is a traffic light, or driving this route To provide information on whether or not other confluence is expected for the concession of the elderly.

FIG. 8 shows another example of the display method of the traffic light and the end point display screen in the information on the end point (junction point) of this route and each detour. An enlarged view of the end point is displayed beside the end point, in which the installation status of the traffic light (installation presence / absence), the merging method, the intersection shape (three-way intersection, four-way intersection, five-way intersection, etc.) are displayed. The screen change switch display 31 is also provided on the screens of FIGS. 7 and 8, and the operation method, its effect, and the operation result are the same as those described above.

FIG. 9 shows elevation differences from the start point to the end point of the present route and each detour by balloons beside each route, and the elevation of each point of each route in a three-dimensional view toward the traveling direction. It is. At this stage before the route is selected, the route is drawn in the center of the screen in a bold line with a different color. Then, a self-vehicle position mark 19 is attached to this route. ↑ is a display method of a point whose altitude is higher than the starting point based on the first starting point in the traveling direction, and the length of the axis indicates the approximate level of the altitude. On the contrary, ↓ is a method of displaying a point whose altitude is lower than the starting point in the traveling direction with respect to the first starting point, and the length of the axis indicates an approximate level of the altitude. The change in the axial length in this case indicates the gradient. Then, the height difference between the highest altitude point and the lowest altitude point is notified by a balloon as an altitude difference.

As the three-dimensional display method, not only the method using the arrows as in the present embodiment but also various methods known as the three-dimensional display method can be used.

This screen also has a screen switching switch display 31 at a predetermined portion (upper right in this example), and the operation method, its effect, and the operation result are the same as those described above.

FIG. 10 is a display screen of driving easiness, showing information indicating the driving easiness of the present route and each detour. A running ease mark (running level mark) 32 is attached beside this route and each route. This mark indicates that the larger the area of the hatched portion (color changing) in the triangle, the more difficult it is to drive. The user determines the difficulty of each route by looking at the mark. The level of ease of driving includes the road width of this route and the detour route, the separation of human roads and roads, the traffic volume of cars and people, the ratio of left and right turns, the number of intersections and traffic lights, the difference in elevation, and the The result of the formula taking into account the passage or the like is calculated as a numerical value with a perfect score of 1 and complete dissatisfaction of 0 and a proportionally inclined middle.
In this example, a geometrical figure which is easy for the user to understand is displayed. This screen also has a screen switch switch display 31
If you operate the “previous screen”, the operation method is
Return to When "Close the screen" is selected, this screen disappears and returns to FIG.

FIG. 4 shows a selection operation screen for selecting a route from the present route and each detour to the destination. FIG.
The user selects and operates “not see” (does not see detour information) in the detour information switch display 21 from “” to “see” (sees detour information) in the detour information switch display 21.
May be selected, and transition may be made through FIGS. 5 to 10. A route selection switch display 22 for instructing the selection of a route is provided at a predetermined portion of the screen (the position changes to a position easy to see depending on the drawing position and shape of the detour route, but in the present example, below the center).

The user selects "No" (stops the route change and selects the main route), "Detour 1" (stops the main route and selects the detour 1), "Detour 2" (stops the main route and bypasses the route) Select route 2) {If there is a detour 3, select one from "detour 3" (stop this route and select detour 3)}.
If "No" is selected, the screen returns to FIG. still,
When "No" is selected and selected, a transition to a screen for performing normal route guidance can be realized. In that case, if the own vehicle is still in a congested state, the flow further shifts to FIG. When "detour 1" or "detour 2" (detour 3 is present and detour 3) is selected, the selected route is changed to the new book route and the route to the destination is guided. In that case, the screen is Figure 1.
1 (in this example, the result indicates that the detour 1 is selected).

FIG. 11 shows a new book route guidance display screen.
This shows a display state of a screen on which one of the detours is selected and route guidance is performed as a new book route. The detour route is displayed with a bold line in different colors. In addition, the original route (original route) which is not selected is estimated position when traveling on the original route (or another detour) in traffic jam (estimated based on data such as road speed limit, traffic light, traffic jam, etc.). Is displayed. As another implementation method, the estimated vehicle position mark 33 when one of the detours is selected is displayed only on the original route, and the estimated vehicle position mark 3 is displayed on each detour only when the original route is selected.
3 may be displayed. Note that the screen of FIG. 11 and the screen of FIG. 2 are shown in FIG. 11 so as to be applicable to a user who attaches importance to the transition of the estimated vehicle position mark of the route not selected and a user who attaches importance to route guidance of the new book route. Screen showing route guidance for the user (reduced to the original scale)
Can be divided and displayed. This screen continues until the vehicle reaches the junction. When the vehicle reaches the junction, the screen changes to the display of FIG. When the detour is not selected in the screen display state of FIG. 4 and this route is selected, the estimated position when traveling on each detour is displayed.

FIG. 12 shows a common merging point (a common merging point common to each candidate route, that is, a common merging point including a merging point between the present route and each detour and a merging point between the detour and another detour). It is a time difference / distance difference display screen at the time of arrival. The vehicle travels along the selected detour (Shinmoto route) to reach a common end point (a junction with the original route and a junction with the detour 2). It is a display screen of the display 14 displayed when it reaches. (New) The vehicle position mark 19 of this route is displayed on the end point. In this example, traveling on the selected detour arrives at the end point earlier than traveling on any other route. At this time, the estimated vehicle position mark 33 displayed on the original route or another detour has not yet arrived at the common junction (in this example). Also, at this time, the difference between the arrival time and the estimated arrival time of the traveling of the selected route and the traveling of the non-selected route is estimated as the traveling position of the selected route and the non-selected route. The distance difference from the traveling position is displayed on the distance difference display section 35, and both show a positive numerical value (that the selected route arrives earlier). In this case, a notification is given to congratulate that the user has selected the new route appropriately. For example, on the screen, a balloon of a “congratulations” blessing message is displayed in a large size. In addition, "Discussion! Message or a background screen of confetti. Then, the sound of the fanfare is repeatedly output from the sound generation device 15 (in this example, since the sound cannot be expressed, the sound is described using a speech balloon). still,
Similar display and notification are performed even when the detour is not selected on the display screen of FIG. 4 and the original route is selected.

At the bottom of the screen, a route determination switch display 36 for instructing whether or not data is to be stored in the detour is displayed. If "Yes" is selected, the detour data is stored and previously stored. The data is replaced and updated and stored. The data updated and stored in this manner is used for the next route search and the like. Then, the notification operation ends in a certain period of time, and then the screen continues to guide the route. Then, the estimated vehicle position mark 33 of the other route disappears. If "No" is selected, the detour data is not stored, and the screen continues to guide the route.

When the estimated traveling position of the other route reaches the end point earlier than the vehicle position mark of the new main route, and the distance difference display section 35 and the time difference display section 34 show negative numerical values (selection). If there is a route arriving earlier than traveling on the route), for example, a message of "I'm sorry" and an animation of tears are displayed, and the voice output of "Funya ~ Funya ~" is performed a plurality of times.

In this case as well, a route confirmation switch display 36 for instructing whether or not data is to be stored in the detour is displayed, and if "YES" is selected, the detour data is stored and previously stored. The data is replaced with the route data, updated and stored. The data updated and stored in this manner is used for the next route search and the like. Then, the notification operation ends in a certain period of time, and then the screen continues to guide the route. Estimated vehicle position mark 33 of another route
Disappears. If "No" is selected, the detour data is not stored, and the screen continues to guide the route.

Here, the flow of data and signals for realizing the operation of the navigation device shown in FIGS. 2 to 11 will be described with reference to the drawings. FIG. 13 illustrates the flow of data and signals when the operations of FIGS. 2 to 11 are realized.

In the route calculation processing section 61, the map data 40
Road data (link data consisting of the location of various intersections and data of adjacent intersections to be connected and node data consisting of the distance between links) and road attribute data (road width, regulation data such as one-way traffic, expressways, national roads, prefectural roads) Based on the road type data of the vehicle, the route from the start point (the vehicle position detected by the vehicle position detection unit 69) to the end point (the destination) is calculated, and the result is stored in the route data memory 60. The route calculation processing by the route calculation processing unit 61 is performed when the user performs a route search operation using the operation unit 63, and when a traffic jam is detected by the traffic jam detection unit 68, the detour search is performed in the same manner. Performed and the calculated detour is stored in the route data memory 60. And
From the routes stored in the route data memory 60, the route selected according to the operation of the operation unit 63 is the route selection unit 67.
Is transmitted to the display unit 64, and the selected route is displayed on the display unit 65.

The detour storage unit 73 receives a selection operation signal of a determination button (path determination switch display 36) from the operation unit 63, and stores the data of the route selected by the route selection unit 67 at that time. The route data stored in the detour storage unit 73 is used by the route calculation processing unit 61 at the time of subsequent route inspection.

The detour information calculation processing unit 50 performs a process of calculating detour information to be displayed on the display unit 65 based on various data from the map data 40 and the route data stored in the route data memory 60. , To the display control unit 64. In addition, the display control unit 64 outputs an audio signal to the notification unit 66 as necessary, in addition to the display on the display unit 65, and performs an audio notification (including an alarm sound).

Next, each arithmetic processing section in the detour information arithmetic processing section 50 will be described. Detour route calculation processing unit 5
1 calculates the distance of the target route by a method of integrating the road distance (link data) between the passing intersections along the route based on the route data and the road data. The detour time calculation processing unit 52 determines the road distance between the passing intersections along the route with the estimated traveling speed in consideration of the speed limit and the congestion, based on the route data, the road data, the road attribute data, and the traffic congestion information, for example. The required time of the target route is calculated by a method of integrating the divided values or the like.

The detour altitude calculation processing unit 53 searches for altitude along the route, for example, based on the route data and the altitude data, and calculates the altitude for each point on the route (with the position data at each point on the route). Further, the values are statistically processed to calculate the highest and lowest altitudes. The detour traffic light arithmetic processing unit 54, for example, based on route data and traffic light data,
A traffic signal is searched and counted along the route, and the number of traffic signals in the detour is calculated. It is also possible to use the time data to count the number of each traffic light state such as a blinking state. The detour end point calculation processing unit 55 calculates the state of the intersection at the junction of each route, the presence / absence / type of the traffic signal, and the shape of the intersection based on, for example, the route data, the road data, and the traffic light data. The detour driving ease calculation processing unit 56 calculates the ease of travel of each route based on, for example, route data and road data, road attribute data, altitude data, and traffic light data. , The ease of travel is calculated using the altitude difference of the route, the number of traffic signals, and the like as parameters.

The arrival time estimating unit 70 calculates the required time to the destination in the same manner as the detour time estimation processing unit 52, and estimates the arrival time at the destination by adding the time to the current time. .

The scale calculator 71 calculates a scale at which a map of a required range can be displayed from data such as a current position, a junction, each route, and a destination. The travel position estimating unit 72 calculates the travel distance from the elapsed time from the determination of the travel route (selection of the detour) and the estimated travel speed when the vehicle travels on a target route estimated based on, for example, road attribute data or traffic congestion information. Is calculated, and the travel position is calculated assuming that the travel distance has been moved along the route. The time difference calculating means 34 estimates an estimated travel time from the estimated travel speed when traveling on the target route estimated based on, for example, road attribute data and traffic congestion information, and the distance of the route, and calculates an estimated travel time based on actual travel. Based on the difference between the time when the vehicle reaches the merging point of the route and the predicted arrival time, the time difference between the actual travel and the time when the vehicle travels through another route is calculated. The distance difference calculating means 34 calculates a distance difference from the difference between the time when the actual traveling reaches the confluence of each route and the position estimated by the running position estimating unit 72 at that time.

Next, the processing of the detour information guidance display screen performed by the microcomputer 7 will be described. FIG.
In the congestion detour information guidance process performed by the microcomputer 7, the microcomputer 7 starts the detour search process performed when the vehicle encounters congestion,
It is a flowchart which shows a series of processes from the presentation process of detour information to the route guidance process of a detour. This process is repeatedly executed while the navigation device performs route guidance.

In step S1, it is determined whether or not there is an input signal from the traffic jam detector indicating that the vehicle has entered a traffic jam situation. Selection of a detour due to unsupported traffic jam (including selection of this route).
Excluding traffic congestion caused by is determined, if there is, step S2
If not, the process is terminated. In step S2, during a guard time, which is a time during which the detour search selection screen is not displayed even when traffic is congested (for a fixed period of time after the detour search is selected not to be performed on the detour search selection screen, Is determined to prevent the detour search selection screen from being repeatedly displayed at short time intervals), and the process is terminated if there is no such process, and if not, the process proceeds to step S3. In step S3, a detour search selection screen (FIG. 2) is displayed, and the process proceeds to step S4. In step S4, it is determined whether or not the selection operation for executing the detour search has been performed by the input device 11, and if there is, the process proceeds to step S6.
Move to 5. In step S5, the guard time is set and the process is terminated (the guard time starts from this point). In step S6, a route (a detour) is searched for, and the process proceeds to step S7. In step S7, a detour information selection screen (FIG. 3) is displayed, and the flow advances to step S8. Steps
In S8, it is determined whether or not the input device 11 has performed a selection operation of "seeing" the detour information.
If not, the process proceeds to step S11.

In step S9, a detour information item selection screen (FIG. 5) is displayed, and the flow advances to step S10. In step S10, "close" (of the detour information item selection switch display 23) (close 30 button display) is performed by the input device 11.
It is determined whether or not a selection operation has been performed.
It moves to 11, and if there is no, it returns to step S10. In step S11, the present route / alternative route selection screen (FIG. 4) is displayed, and the process proceeds to step S12. In step S12, it is determined whether or not a selection operation of "do not" (do not select a detour) (by the route selection switch display 22) is performed by the input device 11, and if so, a congestion guidance process (guidance display diagram 15 of the original route) If there is no traffic congestion, the process proceeds to the congestion guidance process (guidance display diagram of the selected detour).

Next, the congestion guidance processing (selected detour guidance processing) performed by the microcomputer 7 will be described. FIG.
5 is a flowchart illustrating a congestion guidance process performed by the microcomputer 7. This process is performed as a process following Step S12 in FIG.

In step S21, the position of the vehicle is detected.
Move to step S22. In step S22, the position of the vehicle is displayed on the display map, and the process proceeds to step S23. In step S23, the vehicle position when traveling on a route that has not been selected (unselected route) is estimated, and the process proceeds to step S24.

In step S24, the estimated vehicle position when the vehicle travels on the non-selected route is displayed on the display map (the estimated vehicle position mark 33 is displayed), and the process proceeds to step S25. In step S25, it is determined whether or not the vehicle has reached the junction. If it has arrived, the process proceeds to step S26, and if not, the process returns to step S21. In step S26, the time difference / distance difference between the actual traveling and the arrival at the confluence point in traveling on the non-selected route is calculated, and the process proceeds to step S27. In step S27, the calculated time difference and distance difference are displayed,
Move to step S28. In step S28, the time difference
A display / output sound corresponding to the distance difference display is selected, and the process proceeds to step S29. In step S29, the selected display
The output sound is output, and the process proceeds to step S30. Steps
In S30, the data of the route selected and displayed for guidance is stored ("Save" of the route determination switch display 36).
It is determined whether or not the selection operation has been performed on the input device 11, and if there is, the process proceeds to step S31, and if not, the process ends. In step S31, the data of the selected guided route is stored, and the process ends.

Next, the display processing of the detour information items performed by the microcomputer 7 will be described. FIG. 16 is a flowchart showing a display process of a travel distance / travel time display screen performed by the microcomputer 7. This processing is performed by using the input device 11 on the detour information item selection screen (FIG. 5).
5 "is started.

In step S35, the distance to the junction in each route is calculated, and the flow advances to step S36. In step S36, the time required to reach the junction in each route is calculated, and the process proceeds to step S37. Step S37
Then, the screen changeover switch display 31 is operated by the input device 11.
It is determined whether or not the “close screen” selection operation has been performed. If there is, the process proceeds to the route / alternative route selection screen process (step S11 in FIG. 14), and if not, the process proceeds to step S38.
In step S38, it is determined whether or not the selection operation of "to the next screen" of the screen changeover switch display 31 has been performed by the input device 11, and if so, the signal and end point display screen processing (FIG. 1)
Go to 7), otherwise go to step S39. In step S39, it is determined whether or not the selection operation of "previous screen" of the screen changeover switch display 31 has been performed by the input device 11, and if there is, the process proceeds to a detour information item selection screen process (step S9 in FIG. 14). Return to

FIG. 17 is a flowchart showing the processing for displaying the traffic light and end point display screen performed by the microcomputer 7. This processing is performed when the “traffic light 26” or “end point 27” of the information item selection switch display 23 is selected by the input device 11 on the detour information item selection screen (FIG. 5).
Alternatively, when a selection operation of “to the next screen” is performed by the input device 11 on the mileage / time display screen (FIG. 6),
Alternatively, the processing is started when a selection operation of “previous screen” is performed by the input device 11 on the altitude display screen (FIG. 8).

In step S41, the traffic light data on each route is searched, and the process proceeds to step S42. Step S
At 42, the number of traffic signals existing on each route is counted based on the traffic signal data on each route searched, and step S43 is performed.
Move on to In step S43, the position of the traffic light is displayed on the display map based on the traffic light data on each searched route, and the process proceeds to step S44. In step S44, the counted number of traffic signals of each route is displayed on the display map, and the process proceeds to step S45. In step S45, the junction information (presence / absence of a traffic light, type, intersection shape, etc.) is displayed, and the flow proceeds to step S46.

In step S46, it is determined whether or not a "close screen" selection operation of the screen changeover switch display 31 has been performed by the input device 11, and if so, the flow proceeds to the present route / detour selection screen processing (step S11 in FIG. 14). If not, the process proceeds to step S47. In step S47, it is determined whether or not the selection operation of "to the next screen" of the screen changeover switch display 31 has been performed by the input device 11, and if there is, the processing shifts to the elevation display screen processing (FIG. 18).
Move on to In step S48, it is determined whether or not the selection operation of "previous screen" of the screen switch switch display 31 has been performed by the input device 11, and if there is, the process proceeds to a mileage / time display screen process (FIG. 16), and if not, the process returns to step S46. .

FIG. 18 is a flowchart showing the display processing of the altitude display screen performed by the microcomputer 7. This processing is performed on the input device 11 in the detour information item selection screen (FIG. 5).
When the operation of selecting “altitude 28” of the information item selection switch display 23 is performed, or the operation of selecting “to the next screen” is performed by the input device 11 on the traffic light and end point display screen (FIG. 7), or running Ease display screen (Fig. 9)
Is started when the input device 11 performs a selection operation of “to the previous screen”.

In step S51, elevation data is searched for in each route, and the flow advances to step S52. In step S52, an altitude difference is calculated based on the retrieved altitude data, and the process proceeds to step S53. In step S53, the altitude state of the route is displayed by a three-dimensional display indicating the altitude based on the retrieved altitude data, and the process proceeds to step S54. In step S54, the altitude difference of each route (the altitude difference between the highest point and the lowest point in each route) is displayed based on the searched altitude data, and the process proceeds to step S55. In step S55, it is determined whether or not a selection operation of "close screen" of the screen switch switch display 31 has been performed by the input device 11, and if so, the present route / detour selection screen processing (step S11 in FIG. 14).
If not, the process proceeds to step S56. Step S5
6, the input device 11 controls the screen switch switch display 3
Judge whether or not the selection operation of “1.
If there is, the process proceeds to the running ease display screen process (FIG. 19), and if not, the process proceeds to step S57. In step S57, it is determined whether or not the selection operation of "previous screen" of the screen switch switch display 31 has been performed by the input device 11, and if there is, the process proceeds to the traffic light and end point display screen process (FIG. 17), and if not, the process returns to step S55.

FIG. 19 is a flowchart showing the display processing of the running ease display screen performed by the microcomputer 7. This processing is performed when the input device 11 selects “easy to run 29” on the information item selection switch display 23 on the detour information item selection screen (FIG. 5) or on the altitude display screen (FIG. 8). The process is started when a selection operation of “to the next screen” is performed by the device 11.

In step S61, various route data for each route is collected, and the flow advances to step S62. In step S62, the ease of running of each route is calculated from the collected route data of each route, and the process proceeds to step S63. In step S63, the driving ease of each route is displayed, and the process proceeds to step S64. In step S64, it is determined whether or not a selection operation of "close screen" of the screen switch switch display 31 has been performed by the input device 11, and if there is, the flow proceeds to the route / detour selection screen processing (step S11 in FIG. 14). Move to S65. In step S65, it is determined whether the input device 11 has performed an operation of selecting "previous screen" of the screen switch switch display 31, and if there is, the process proceeds to the altitude display screen process (FIG. 18).
Return to

[0066]

As described above in detail, according to the navigation device of the present invention, it is possible to select a route and a detour during a traffic congestion after obtaining various information, so that an appropriate detour can be performed. You will be able to choose.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a navigation device according to an embodiment of the present invention.

FIG. 2 is a display diagram showing a display state of a detour search selection screen.

FIG. 3 is a display diagram showing a display state of a detour information selection screen.

FIG. 4 is a display diagram showing a display state of the present route / detour selection screen.

FIG. 5 is a display diagram showing a display state of a detour information item selection screen.

FIG. 6 is a display diagram showing a display state of a mileage / time display screen of a detour information item.

FIG. 7 is a display diagram showing a display state of a traffic light and end point display screen of a detour information item.

FIG. 8 is a display diagram showing a display state of a traffic light and end point display screen of a detour information item.

FIG. 9 is a display diagram showing a display state of an altitude display screen of a detour information item.

FIG. 10 is a display diagram showing a display state of a driving ease display screen of a detour information item.

FIG. 11 is a display diagram showing a display state of a detour information selection screen.

FIG. 12 is a display diagram showing a display state of a time difference / distance difference display screen when reaching a junction;

FIG. 13 is an explanatory diagram showing the flow of signals and data.

FIG. 14 is a flowchart showing a traffic jam detour information guidance process performed by the microcomputer 7;

FIG. 15 is a flowchart showing a congestion guidance process performed by the microcomputer 7;

FIG. 16 is a flowchart showing display processing of a traveling distance / time display screen performed by the microcomputer 7;

FIG. 17 is a flowchart showing display processing of a traffic light and an end point display screen performed by the microcomputer 7;

FIG. 18 is a flowchart showing display processing of an altitude display screen performed by the microcomputer 7;

FIG. 19 is a flowchart showing display processing of a running ease display screen performed by the microcomputer 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Navigation apparatus 2 ... GPS receiver 3 ... VICS receiver 4 ... Distance sensor 5 ... Orientation sensor 6 ... Interface 7 ... Microcomputer 8 ... ROM 9 ... -RAM 10-CPU 11-Input device 12-CD-ROM player 13-CD-ROM 14-Display 15-Alarm (sound generation circuit)

Claims (13)

[Claims] 1. A navigation device for performing route guidance to a destination, wherein: a detour search means for searching for a detour; a detour display means for displaying a detour searched by the detour search means; A detour selection means for the operator to select a desired detour from the detours displayed by the road display means; and a detour guide means for performing route guidance for the detour selected by the detour selection means. A navigation device comprising: 2. The navigation device according to claim 1, wherein the detour display unit displays the detour on a scale that allows both the start point and the end point of the detour to be displayed simultaneously. 3. A detour route calculating means for calculating a travel distance between a start point and an end point of the detour, wherein the detour display means displays the detour distance calculated by the detour distance calculating means. The navigation device according to claim 1 or 2, wherein: 4. A travel time estimating means for estimating a travel time between a start point and an end point of a detour, wherein the detour display means displays the estimated travel time estimated by the travel time estimating means. The navigation device according to claim 1, 2 or 3, wherein 5. A traffic signal information acquiring means for acquiring traffic signal information relating to a traffic signal existing between a start point and an end point of a detour, wherein the detour display means displays the traffic information acquired by the traffic information acquiring means. The navigation device according to any one of claims 1 to 4, wherein 6. An end point information obtaining means for obtaining end point information on an intersection at an end point of a detour, wherein the detour display means displays the end point information obtained by the end point information obtaining means. Claim 1
The navigation device according to claim 5. 7. An altitude information obtaining means for obtaining altitude information relating to altitude of a detour, wherein the detour display means displays the altitude information obtained by the altitude information obtaining means. Item 1
The navigation device according to claim 6. 8. The navigation device according to claim 7, wherein said detour display means displays said target information in a three-dimensional view. 9. A traveling ease detecting means for detecting a level of ease of traveling in the detour, wherein the detour displaying means displays the traveling ease detected by the traveling ease detecting means. 2. The method according to claim 1, wherein
The navigation device according to claim 8. 10. A main route traveling position estimating means for estimating a traveling position when traveling on a main route which is an original search route before a detour search during guidance by the detour guiding means, and the main route traveling. The navigation device according to any one of claims 1 to 9, further comprising: estimated position display means for displaying an estimated traveling position estimated by the position estimation means. 11. A main route traveling position estimating unit for estimating a traveling position when the vehicle travels on the original route, which is an original search route before the detour searching, during guidance by the detour guiding unit; Distance difference display means for displaying a distance difference between the estimated travel position estimated by the main route travel position estimating means and the junction point when the vehicle arrives at the junction with the main route. The navigation device according to claim 1. 12. An arrival time estimating means for estimating a time to arrive at a junction of the detour and the main route when the vehicle travels on the main route which is the original search route before the detour search. A time difference calculating means for calculating a time difference between a time at which the road and the main route converge, and an estimated arrival time estimated by the arrival time estimating means; and a time difference calculated by the time difference calculating means. A time difference display means is provided.
The navigation device according to claim 11. 13. An arrival time estimating means for estimating a time to arrive at a junction between the detour and the main route when the vehicle travels on the main route which is the original search route before the detour search. A time difference calculating means for calculating a time difference between a time at which the road and the route merge with each other and an estimated arrival time estimated by the arrival time estimating means; and a time difference calculated by the time difference calculating means, 13. The navigation device according to claim 1, further comprising: a notification unit configured to perform notification in different notification modes depending on whether the estimated time is a later value or an earlier value. .