JPH02141899A - On-vehicle navigation device - Google Patents

Abstract

PURPOSE:To execute a satisfactory path guidance to a user, and also, to select an economical path by resetting automatically the shortest path to a destination, when a car runs by going off from a guided path in the course of path guidance. CONSTITUTION:A CPU 1 receives present place data from a present place detecting device 2, and displays the own car position and a map of its vicinity on a display device 6 through a display controller 5. Subsequently, when a user sets a destination by an input device 3, the CPU 1 sets the shortest path to the destination, and executes the path guidance to the destination. In the course of path guidance, the present place is always detected, and whether the car runs along the guided path or not is decided. For instance, when the own car position enters between an intersection and an intersection, it is decided that the car goes off from the guided path, the shortest path in the advance direction is reset, and the path guidance to the destination is executed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method for guiding a route from a current location to a destination.
This relates to a navigation device for the body.

[Conventional technology]

Examples of conventional in-vehicle navigation electrical equipment of this type include JP-A-62-91811 and JP-A-62-95.
As disclosed in Publication No. 425, the system guides the user by setting the shortest route from the current location to the destination that avoids entry restrictions, and indicates a detour if there is a traffic jam.

In addition, for example, as disclosed in Jikai Li862-86500 and Japanese Patent Application Laid-open No. 1986-91811, the shortest M and E are selected from the current location to the destination without being prohibited from entering. .

[Problem to be solved by the invention]

However, the single-ridge navigation system installed at the front of the vehicle guides the driver through crossroads that cannot be traveled if the traffic regulations have changed or the information on the traffic regulations is not available. Also,
If you try to take a detour to avoid only the Shibuya city in front of you, the distance to your destination may be quite long, so it's a good mw!
There was a problem that one induction was not possible.

On the other hand, can T#'s in-vehicle navigation device select the shortest route from the current location to the destination?
There was a problem in that it was not possible to know the amount of fuel required for the shortest distance.

The present invention has been made in order to eliminate the above-mentioned problems, and its purpose is to provide a user with a good ``Red@Visit'' and to provide a simple route that can be taken. An object of the present invention is to provide an on-board navigation device.

[Failure to solve the problem]

In order to achieve the above object, the invention of claim 1 provides a route resetting means for automatically resetting the shortest pillar road to the destination when the driver deviates from the guided route during route planning. It is equipped with

In addition, the invention of Section 1il A necessary fuel calculating means for accumulating the required fuel amount for each road and calculating the total required fuel amount for each road, and displaying the maximum, minimum, and average fuel consumption of the required fuel amount. The vehicle is equipped with a display device and a refueling point display means for displaying how far the vehicle can travel based on the fuel remaining amount detected by the fuel sensor, 1 & high, 'R low, and average fuel consumption.

[Effect]

The in-vehicle navigation device according to the invention of claim 1 includes:
If the vehicle deviates from the guided route, the route resetting means automatically reconfigures the shortest route to the destination.
Route guidance can be performed correctly.

In addition, the navigation device 17 for the vehicle in the invention of Section By displaying the required amount of fuel and the average fuel consumption, it also calculates and displays how far you can travel based on the remaining fuel amount and the maximum, minimum, and average fuel consumption. In addition to being able to select an economical route, it is also possible to predict the point where fuel will run out and know the reliable Vc refueling point.

〔Example〕

The present invention will be described in detail below with reference to the drawings. FIG. 1 is a 7'Q diagram showing the configuration of a single-mounted navigation seal device according to a central example of the invention as claimed in claim X1. In the figure, arithmetic processing fi &
(hereinafter abbreviated as CPU) 1 receives current location data from the current location inspection station [2] and destination data from the input device 3, and sets the shortest route to the destination.

The outside N storage device 4 supplies the CPU 1 with vector data related to passages, place name data, etc. stored on a floppy disk, compact disk, etc. dThe display control device 5 supplies the C
Passage data, place name data, etc. supplied from PU1,
Display Ii with CRT, 'fFLIfl+display board, etc.
Control and display e position 6.

FIG. 2 is a 7a-chart diagram showing the processing operation of CpUl,
FIG. 3 shows a guidance route display screen 1 displayed on the display length f6 based on the processing operations of the CPU 1. In FIG. 3, 7 indicates the destination, 8 indicates the own military position, and 9 to 13 indicate intersections.

Next, the operation will be explained with reference to FIGS. 2 and 3. When the operation starts (step ST2-1), CpUl
receives the current location data from the current location detection device 11IL2,
The own army position 8 and a nearby map are displayed on the display length tiL6 via the display control length tIL5 (step 5T2-2).

Next, when the user sets the destination using the input device 5, the CPU 1 sets the shortest route to the destination (Step 5T2-14), and the route to be guided is shown in FIG. Displayed as α1, intersection 9→1
Step C (ST2-5) for guiding the route to destination 7 through route 2→13.

During route guidance, always detect the current location and perform C step ST2-
6), whether or not the vehicle is traveling along the guided route is added (step 57'2-7). For example, own unit tIL
If 8 enters between intersections 9 and 10, it is determined that the guide route has been deviated from, and the shortest route is reset in the direction of travel, and the intersection 10 → 1 is displayed as shown in Figure 5 (Al).
2 → 15, and search for the route to destination 7.

Furthermore, if the own vehicle position [8 is between intersections 1o and 11, the route is reset as shown in Figure m3 IC+.

If you do not proceed in the guidance direction at intersection 11 and proceed as is, the distance to destination 7 will be considerably longer.
Figure 3 [D+] is displayed, indicating a U-turn.

In step ST2-7, if it is determined that the guide route is being traveled, the process moves to step S2-8, where it is determined whether or not the destination 7 has been reached. Return to step 5T2-5VC and repeat the above operation, and if YES, end the operation (step ST
2-9).

According to this embodiment, even if the user deviates from the guidance route for some reason, the shortest route to the destination can be automatically reset.

FIG. 4 is a block diagram showing the construction of an in-vehicle navigation system according to an embodiment of the invention of item 2, and the same parts as those in FIG. 1 are given Oka symbols for explanation. Omitted. In summary, 14 is a fuel sensor, 15 is a distance sensor, 16 is a map data storage device, and 17 is a travel data storage device.

In addition, CpUl in this embodiment includes a required fuel amount calculation means that calculates the total amount of fuel required for various roads used to reach the destination, and a refueling point display that predicts the n point where the fuel runs out and displays it as Means and the best when driving.

The fuel cost processing means includes a minimum and average fuel cost updating means for updating each fuel cost by X.

Figure 5 shows that after the route from the current location to the destination has been selected,
7o- of the operation performed by CpUl (necessary fuel electric calculation operation)
When the route selection is completed, the road data of the nine selected routes is loaded, and the selected route includes expressways, general roads, urban routes, rough roads, and other roads, respectively.
Find the distance n (step s r s-
i~5-5).

Next, calculate the highest, lowest, and average fuel consumption for each passage from the travel data storage fi [17], calculate the highest, lowest, and average fuel type required for each passage, and select the selected route. The amount of fuel required for driving is determined by X, and the highest, lowest, and average fuel types are displayed on the display device 6 (step S
T 5-4 to 5-6).

Furthermore, the fuel sensor 14 detects fuel exhaustion, calculates how far it can travel with maximum, minimum, and average fuel consumption, predicts the fuel exhaustion point, displays it on the display device 6, and ends the process (step ST 5-7 to 5-9).

According to this embodiment, the roads include island express roads, general roads, city roads,
It has separate fuel consumption data for rough roads and other roads, and also records maximum, minimum, and average fuel consumption, so it can reduce errors when predicting fuel consumption for a certain section.

In step S T 5-4, the driving data storage device 1
7, we performed an operation to read out the maximum, minimum, and average fuel consumption of each road such as expressways, general roads, city streets, and rough roads. It is desirable to accumulate or update data while the vehicle is running.

Therefore, in this embodiment, the destination is determined and the data is stored or updated while the vehicle is traveling toward the destination.

This operation (fuel efficiency processing operation) will be explained with reference to FIG.

When the operation starts (step 5T6-1), CPU1
receives the current location data from the current location data ft2, reads the route data from the map data storage length [16, and determines whether the route is an expressway, a general road, an urban road, or a rough road.
Or, determine if it is another road (step 5).
T6-2).

Then, the mileage counter register d and the fuel amount counter register f provided inside the CPU 1 are cleared (step ST6-5). Next, the current location is detected, road data is searched, and the type of passage is determined (step ST6-4).

The cleared travel distance d and fuel amount 5ttf are stored in the register (Step ST6-5), and it is determined whether the types of roads on which the vehicle is being traveled are the same (Step ST6-5).
6-6), in the case of YES, the process moves to step ST6-7 to determine whether the engine has stopped, and in the case of NO, the process from step ST6-4 is repeated.

Also, if the type of passage changes or the engine is stopped, the content of the d register is compared to a certain distance (xCkm) at step ST 6-8), and if it is smaller, the process moves to step ST 6-17. If it is larger, read the stored data of the same type of road as the path you have been traveling on from the travel data storage device 17 in step ST6-
9), the fuel consumption Ntt is calculated from the mileage Hd and the fuel consumption amount j (step ST6-10).

It is determined whether this fuel consumption N is greater than the continuous fuel consumption Nrna read from the driving data storage device 17 (C step 5T6-11), and the thicker one is N1na, ==
Step ST 6-12) It is determined whether the fuel consumption N is smaller than the minimum fuel consumption NmLrL. If it is smaller, N is set (Step ST 6-14).

Next, the mileage distance, usage condition P+IF, and average fuel consumption N are also calculated and recorded in the mileage data storage device 17 (
Step ST 6-15, 163° Step 5T6-
In step 17, it is determined whether the engine is stopped, and if it is, the process is terminated.Stella/', ST 6-
18) If the stock is moving, the stock return process starts again from step ST6-2.

(Effects of the Invention) As is clear from the above description, the following effects are achieved according to the present invention.

(1) If you set a destination, it will be determined whether you are driving on the shortest parking road set for this destination, and if you are driving, the system will automatically return to the destination. Since it is possible to reset the shortest guidance route for the user, it is possible to perform a good one-way trip 4 without putting any extra effort on the part of the user.

(21) Since the necessary fuel consumption required for driving to the destination is calculated for each route based on fuel consumption data from past driving, there are fewer errors in the calculation, and it is easier to take the time to reach the destination. It is possible to escape the pillar road.

(51) The fuel exhaustion point is predicted and displayed based on the remaining fuel amount and fuel consumption data from past driving, so you can definitely know the refueling point.

[Brief explanation of the drawing]

11th! i! J is a block diagram showing an in-vehicle navigation system according to an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of the arithmetic processing unit, and FIG. 5 is a guide route display displayed on a display device. 4 is a block diagram showing a navigation system for a vehicle interior according to another actual IM example of the present invention, and FIG. FIG. 6 is a flowchart showing the fuel efficiency processing operation of the arithmetic processing unit. 1... Arithmetic processing @equipment-2... Current location detection device S...
Input device ii 4...external storage device 6...
・Display device 14...7 Air sensor 15...Distance sensor 16...Map data recording device 17...Driving data storage device

Claims (3)

[Claims] 1. a current location detection device that detects the current location of the own vehicle; an input device that sets a destination; an external storage device that stores data regarding the route; an arithmetic processing device that sets the shortest guidance route to the destination based on destination data; and a display device that displays the guidance route together with road data read out from the external storage device, and the display device displays the guidance route together with the road data read out by the current location detection device. a guide route resetting means for determining whether or not the guide route is being traveled based on the current location data and automatically resetting the shortest guide route when the guide route is not being traveled; An in-vehicle navigation device characterized by being equipped in a processing device. 2. A current location detection device that detects the current location of your vehicle, a distance detection sensor that detects travel distance, and a map storage device that stores map data that allows you to distinguish each type of road. At the time of route selection, the travel distance is calculated from the travel data storage device that stores the minimum and average fuel consumption, and the map data stored in the previous map storage device for each type of path used from the current location read by the previous current location detection device to the destination. ,
Required fuel amount calculating means for determining the required amount of fuel for each type of route from the traveling distance and the amount of fuel read from the traveling data storage device, and calculating the total amount of required fuel for each type of road used to reach the destination; , a display device that displays the maximum, minimum, and average fuel consumption of the determined required fuel amount, and the maximum, minimum, and average fuel consumption read from the fuel remaining amount detected by the fuel sensor and the travel data storage device, An in-vehicle navigation device comprising: a refueling point display means that calculates how far the vehicle can travel, predicts a point where fuel will run out, and displays the predicted point on the display device. 3. Furthermore, the type of road currently being traveled is determined based on the map data read from the map storage device, and the highest and lowest fuel consumption amounts during travel are determined based on the fuel consumption amount of the determined road and the travel distance detected by the distance sensor. , average fuel consumption, and if the maximum and minimum values stored in the travel data storage device are exceeded, the fuel consumption processing means is provided for updating the maximum and minimum values. In-vehicle navigation device.