JP3624319B2 - Vehicle guidance device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a vehicle guidance device that guides driving of a vehicle according to a guidance route set on the road map while detecting the current position of the vehicle on the road map.
[0002]
[Prior art]
Conventionally, as this type of vehicle guidance device, when a destination on a road map projected on a screen is input and set, each of the routes connecting the current position (starting point) of the vehicle on the road map and the destination From this, an optimum guide route that is advantageous in terms of route cost such as distance, time, and toll is searched, and a vehicle is guided in accordance with the searched guide route ( (See JP-A-1-138409).
[0003]
Conventionally, as a countermeasure when the vehicle deviates from the guidance route searched for as the shortest route, it is detected that the current position of the vehicle has actually deviated from the guidance route, and the vehicle deviates from the guidance route. Re-determine the shortest route from the current position to the destination, or obtain the shortest route to the destination periodically when driving the vehicle, regardless of any deviation from the guidance route. The route is updated (refer to Japanese Patent Laid-Open No. 63-163210).
[0004]
[Problems to be solved by the invention]
The problem to be solved is that the deviation from the guidance route is detected as a result and the guidance route is newly searched again, or the guidance route is periodically updated when the vehicle travels. In other words, it takes time until a new guidance route is searched after actually deviating from the route, and during that time, driving in an uneasy state without guidance is forced. Then, when the driver is willing to deviate from the guidance route due to reasons such as construction or traffic jams, route search at an appropriate timing is not performed.
[0005]
[Means for Solving the Problems]
The present invention searches for a new guidance route in advance before actually deviating from the guidance route when the driver actively deviates from the guidance route due to reasons such as construction or traffic jams (the original In order to be able to indicate the newly searched guidance route to the driver at an appropriate timing , the driver indicates the direction of departure when deviating from the guidance route. It has a switch means for inputting a deviation information, and to take means for re-searching for a guide route to a destination in response to the input information.
[0006]
【Example】
FIG. 1 shows a basic configuration example of a vehicle guidance device according to the present invention. For example, a distance sensor 1 that outputs a pulse signal for each unit travel distance according to rotation of a tire of a vehicle, and an angular velocity in the ∃-direction, for example. The direction sensor 2 that outputs a signal proportional to the amount of change in the direction of the vehicle that detects the change in the vehicle, the number of pulse signals from the distance sensor 1 are counted, and the distance traveled by the vehicle is measured. From a microcomputer that obtains the current position on the XY coordinates for each constant travel distance of the vehicle by successive calculation by deriving changes in the traveling direction according to the output signal, and controls the entire vehicle travel guide device The signal processing device 3 and the data of the obtained current position are sequentially stored, and the traveling is stored and held as finite continuous position information of the vehicle. A trace storage device 4, a map information storage medium 5 in which road map information based on digital map data is stored in advance, a storage medium playback device 6 that selectively reads out road map information of a necessary area from the storage medium 5, A predetermined road map is displayed on the screen based on the read road map information, and the current position of the vehicle is displayed on the road map displayed on the screen along with the traveling direction of the vehicle at the position. Display device 7 to be displayed in an up-to-date manner, selection and designation of a map to be displayed on the display device 7, setting of the starting point and destination of the vehicle on the map displayed on the screen, and automatic setting of the optimum route therebetween, traveling Operations that can give the signal processing device 3 various operation commands such as selection designation of the trajectory display and change of display mode setting such as selection of the display scale. And location 8, is constituted by a warning device 9 for generating a guidance voice synthesis.
[0007]
In such a configuration, the selectively read road map is displayed on the screen of the display device 7 and set in advance by the signal processing device 3 in accordance with the travel of the vehicle from the departure point S on the map. The current position on the XY coordinates is obtained by calculation according to the scale ratio of the map that has been obtained, the calculation result is sequentially sent to the travel locus storage device 4 and the stored contents are updated. The stored contents are read and sent to the display device 7.
[0008]
Thereby, for example, as shown in FIG. 2, the display device 7 displays a display mark M1 indicating the current position of the vehicle on the map displayed on the screen, a display mark M2 indicating the traveling direction of the vehicle at the current position, and A traveling locus display mark M3 from the starting point S to the current position is displayed in a simulated manner following the traveling state of the vehicle.
[0009]
Then, in the signal processing device 3, based on the digital map data read from the map information storage medium 5, the route from the starting point S set on the map to the destination O, the time, the toll, etc. An optimal guidance route advantageous in terms of cost is searched, and the current position of the host vehicle is on the guidance route when the vehicle travels from the departure point S, for example, by indicating the searched guidance route in a special color. So as to induce. The searched guidance route data is stored and held in an internal guidance route storage unit.
[0010]
At that time, for example, as shown in FIG. 3, the signal processing device 3 detects that the current position P of the host vehicle has approached a certain distance before the intersection Ix to turn right on the guidance route NC. 9, the guidance guidance by voice saying “Please turn right at the intersection 50 meters ahead” is generated, and the guidance for right turn guidance at the intersection Ix is displayed on the screen.
[0011]
It should be noted that the conventional method is applied as it is to search for the optimum guidance route in consideration of the route cost from the starting point S to the destination O.
[0012]
Alternatively, the current position of the vehicle on the map may be obtained by radio navigation using GPS or the like. In this case, there is no need to set the starting point S of the vehicle on the map.
[0013]
In the present invention, in such a vehicle guidance device, it is possible to input deviation information that indicates a deviation direction from the guidance route from the operation device 8, particularly when the driver intends to deviate from the guidance route. as well as to have so as to re-search for a guidance route to a destination in response to the inputted deviation information in the signal processing unit 3.
[0014]
Specifically, for example, a switch group 10 that can input deviation information as shown in FIG. In the relationship of FIG. 3, when the guidance for the right turn is issued when the current position P of the vehicle approaches a certain distance before the intersection Ix to turn right on the guidance route NC, the right turn lane of the intersection Ix is congested. When it is desired to avoid the right turn and go straight ahead for reasons such as, for example, pressing the right turn switch SW1 and then pressing the negative switch SW5, it is input that no right turn is made at the intersection Ix. Subsequently, the straight travel switch SW2 is pressed to input that the vehicle travels straight at the intersection Ix.
[0015]
Accordingly, the signal processing device 3 immediately re-searches for a new guidance route (including a route returning to the original guidance route) when the vehicle deviates from the guidance route NC by going straight on the intersection Ix. Then, the guidance route data stored and held so far is updated to the re-searched route data, and the guidance route display on the road map is changed.
[0016]
Further, when inputting the deviation information from the guidance route, instead of instructing the course of departure, for example, the cursor is designated on the map displayed on the screen by the input operation in the operation device 8. Alternatively, a means for instructing a road that deviates from the guidance route may be taken, and the guidance route according to the designated departure road may be re-searched.
[0017]
【effect】
As described above, according to the present invention, when the driver is about to deviate from the guidance route for reasons such as construction or traffic jam, by inputting deviation information instructing the deviation direction from the guidance route in advance, A new guidance route is searched before actually deviating from the guidance route, and the newly searched guidance route is shown to the driver at an appropriate timing.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of a vehicle guidance device according to the present invention.
FIG. 2 is a diagram showing an example of a vehicle guidance display screen.
FIG. 3 is a diagram showing a part of a guide route projected on a screen.
FIG. 4 is a diagram illustrating a configuration example of a switch group that can input deviation information.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Distance sensor 2 Direction sensor 3 Signal processing apparatus 4 Traveling track storage apparatus 5 Map information storage medium 6 Storage medium reproduction apparatus 7 Display apparatus 8 Operation apparatus 9 Alarm

Claims (2)

In a vehicle guidance device that detects a current position of a vehicle on a road map, searches for a guidance route from the current position of the vehicle on the road map to a destination, and guides the vehicle according to the guidance route In the case of deviation from the guidance route, the driver has a switch means for inputting deviation information for indicating the deviation direction, and means for re-searching the guidance route to the destination according to the inputted information. A vehicle guidance device. When inputting information related to vehicle travel to deviate from the guidance route, means for instructing the course of vehicle travel deviating from the guidance route is provided, and the guidance route according to the instructed course of vehicle travel is re-searched. The vehicle guidance device according to claim 1, wherein

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