JPH07229746A - On-vehicle navigation device - Google Patents

Abstract

PURPOSE:To display on a road map in a superposing manner the information necessary for pickup in various means of transportation, avoidance of traffic jam at crossing, etc., by adding the means to display the operational information of various means of transportation to an on-vehicle navigation device. CONSTITUTION:A timetable storing device 5 to store the timetable of railroad stations in the whole country, a display 7 to display the road map, the railroad operational information, etc., a moving body position calculating device 8 to calculate the traveling position of the train based on the railroad timetable are added, and these devices are controlled by a control circuit 4. To display the timetable of the train, the name of the prefecture is inputted by a timetable display switch of an inputting device 1, and the name of the route, and the name of the station are selected in this order. The date and time are inputted from a calendar clock 2, and the timetable of the train at the selected station corresponding to the date and time is displayed. To display the location of the train on the road map, the timetable data at the stations included in the road map data corresponding to the date and time of the clock 2 are read from the device 6, and the train traveling position is calculated by the device 8 based on the timetable data at two stations, and displayed on the route.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted navigation device for displaying the current position of a vehicle on a road map and guiding an occupant to a destination.

[0002]

2. Description of the Related Art There is known a vehicle-mounted navigation device having a location function of displaying a current location of a vehicle on a road map around the vehicle and a navigation function of displaying a guidance route to a destination to guide an occupant. This type of on-vehicle navigation device provides information on routes such as trains, ships, and aircraft, such as railroads, routes, air routes, and stations, ports, and airfields.
Information on those transportation facilities is displayed in a superimposed manner on the road map. In addition, this type of vehicle-mounted navigation device,
In addition to the original location function and navigation function,
There is one that switches the display screen and provides information corresponding to the date and time of sightseeing, excursions, events, etc. (for example, the driving information provision program (II) of the Navigation Study Group.
S; Integrated Information Services) etc.).

[0003]

However, the above-described conventional vehicle-mounted navigation device is provided with position information corresponding to the date and time of trains, ships, aircraft, etc. that are operating regularly, that is, operation information. Therefore, there is a problem that, for example, it is not possible to confirm traffic congestion at a railroad crossing crossing a running road, or information on arrivals and departures of trains, ships, aircrafts, etc. at the time of transportation to and from a station, a port, or an airport.

An object of the present invention is to provide a vehicle-mounted navigation device which displays operation information of various transportation facilities.

[0005]

The present invention will be described with reference to FIG. 1 showing an embodiment. In the invention of claim 1, the map storage means 6 for storing a road map and the map storage means 6 are described.
It is applied to a vehicle-mounted navigation device equipped with a display means 7 for displaying a road map read out from the vehicle, and is stored in the timetable storage means 5 for storing operation timetables of various transportation facilities and the timetable storage means 5. With the control means 4 for displaying the operation timetables of various transportation means on the display means 7, the above object is achieved. The vehicle-mounted navigation device according to claim 2 comprises a selecting means 1 for selecting an arbitrary transportation means and an arbitrary transit point of the transportation means, and the transportation means selected by the selecting means 1 by the control means 4 and the transit point thereof. The operation timetable in is read out from the timetable storage means 5 and displayed. The vehicle-mounted navigation device according to claim 3 is based on the operation timetables of various transportation means stored in the timetable storage means 5 and the information of various transportation means stored in the map storage means 6 A position calculation means 8 for calculating the current position of the moving body is provided, and the current position of the moving body of the various transportation facilities calculated by the position calculating means 8 is superposed on the road map and displayed by the control means 4. Is. In the vehicle navigation device according to a fourth aspect, the position calculating means 8 calculates the traveling direction of the moving body of various transportation means, and the control means 4 determines the moving direction of the moving body according to the traveling direction calculated by the position calculating means 8. The information is displayed on the display means 7. The various transportation means of the vehicle-mounted navigation device according to claim 5 are rail, subway, bus, monorail, ship,
Including ferries and aircraft.

[0006]

[Operation] Display the operation timetable of various transportation facilities. As a result, it is possible to easily obtain operation information of various transportation facilities, which is convenient for transportation to and from transit points of various transportation facilities and traveling by car train. In addition, you may make it display the operating timetable in the selected transportation and its transit point. As a result, it is possible to easily obtain operation information on any transit point of any transportation. In addition, the present position and the traveling direction of the moving body of various transportation facilities are calculated based on the operation timetables of the various transportation facilities and the information about the transportation facilities, and displayed on the road map. This makes it possible to predict traffic congestion at railroad crossings that intersect the roads that are running, to avoid congestion and reach the destination quickly, and when traveling by car ferry or car train, do not rely on GPS positioning to determine the current location of the vehicle. You can know.

Incidentally, in the section of means and action for solving the above-mentioned problems for explaining the constitution of the present invention, the drawings of the embodiments are used in order to make the present invention easy to understand. It is not limited to.

[0008]

[Example] An example of displaying railway operation information will be described. FIG. 1 is a functional block diagram showing the configuration of one embodiment. Reference numeral 1 is an input device such as a panel switch or a touch panel installed on a display, 2 is a calendar clock for outputting date and time, and 3 is a memory including a ROM and a RAM. Further, 4 is a control circuit composed of a microcomputer and its peripheral parts, which performs the above-mentioned location processing and navigation processing,
The control program described later is executed to display the train operation information. Further, 5 is a timetable storage device that stores timetables of railway stations nationwide, 6 is a road map storage device that stores road map data, 7 is a display that displays a road map and railroad operation information, and 8 is A mobile body position calculation device that calculates the traveling position of the train based on the timetable of the railway, and 9 is a vehicle position calculation device that uses GPS or a beacon.

Here, the road map is dataized as a set of nodes that indicate intersections, bends, etc. on the road and linear links connecting the nodes, and the position of each node and each link. It is stored together with attribute information such as coordinates and road types. These road maps are managed by dividing the whole country into regional meshes defined by JIS-0410. In addition, railroad tracks are also dataized as a collection of nodes such as stations and bending points, and linear links that connect stations to each other, and are stored together with attribute information such as position coordinates and railroad track types of each node. ing.

FIG. 2 is a flowchart showing the timetable display program, and FIG. 3 is a diagram showing an example of a display screen until the timetable is displayed. The display operation of the train timetable will be described with reference to these drawings. When the timetable display switch of the input device 1 is operated, the microcomputer of the control circuit 4 operates as shown in FIG.
Execute the program shown in. In step S1a, the prefecture name selection screen shown in FIG. 3A is displayed on the display 7, and the prefecture name selected by the input device 1 is input.
When the prefecture name is selected, the route name selection screen shown in FIG. 3B is displayed, and the route name selected by the input device 1 is input. Furthermore, when the route name is selected, FIG. 3 (c)
The station name selection screen shown in is displayed, and the station name selected by the input device 1 is input. In the following step S2a, the date and time are input from the calendar clock 2 and the train timetable of the selected station corresponding to the date and time as shown in FIG. 3D is displayed. It should be noted that when a train departing at an arbitrary time is selected by the input device 1 on the display screen of this timetable, FIG.
Train information such as the stop station name and arrival time of the train as shown in (e) is displayed.

FIG. 4 is a flow chart showing another timetable display program, and FIG. 5 is a diagram showing an example of a display screen until the timetable is displayed. A modified example of the timetable display operation will be described with reference to these drawings. Now, on the display 7, FIG.
It is assumed that the road map around the vehicle shown in (a) is displayed. Reference numeral 611 denotes a screen touch switch at the display position of "Yamato Station". In addition, the scale factor of the map in which the station displayed on the road map functions as a screen touch switch is set appropriately. When the timetable display switch of the input device 1 is operated, the microcomputer of the control circuit 4 starts executing the program shown in FIG. 4, and in step S1b, the display 7 displays the vicinity of the current position of the vehicle shown in FIG. While displaying the road map, input the display station selected by the screen touch switch. In the following step S2b, the date and time are input from the calendar clock 2 and the train timetable of the selected station corresponding to the date and time as shown in FIG. 5C is displayed. In addition, when a train departing at an arbitrary time is selected by the input device 1 on the display screen of this timetable,
Train information such as the stop station name and arrival time of the train as shown in FIG. 5D is displayed.

FIG. 6 is a flowchart showing a train position calculation program. The operation of the embodiment for displaying the position of the train on the road map will be described with reference to this flowchart. In step S601, road map data around the vehicle is read from the road map storage device 6 and date and time are read from the calendar clock 2. In the following step S602, it is determined whether or not there is a station or track in the read road map data. If there is a station or track, the process proceeds to step S603, and if not, the process returns to step S601. Step S6
At 03, the timetable data corresponding to the date and time of the station calendar clock 2 included in the road map data is read from the timetable storage device 5. If only the track exists in the road map data, the timetable data of the stations at both ends of the track is read. In step S604, the moving body position calculation device 8 calculates the traveling position of the train based on the timetable data of the two stations. This calculation operation will be described later.
In step S605, it is determined whether or not the map display is turned off by the input device 1. If it is turned off, the process is ended. If not, the process returns to step S601 and the above process is repeated.

7 and 8 are flowcharts showing a train position calculation routine. The mobile body position calculation device 8 executes this train position calculation routine in accordance with a command from the control circuit 4, and calculates the position of the train running between the two stations. In step S701, the distance between two adjacent stations A and B on the track on the read road map is calculated. Step S70
In step 2, the departure time of station A and the arrival time of station B are compared with the current time, and in step S703, based on the comparison result, A
It is determined whether there is a train going from the station to the B station. If there is a train heading from station A to station B, the process proceeds to step S704, and if not, the process proceeds to step S801. If there is a train from A station to B station, in step S704, from A station to B station
Calculate the moving speed of the train to the station.

[Equation 1] (Travel speed) = (Distance between station A and station B) /
(Arrival time at Station B-Departure time at Station A) Further, the travel distance of the train from Station A is calculated.

[Formula 2] (distance traveled from station A) = (current time-A
(Departure time of station) × (moving speed of train) In step S705, the train from A station to B station is positioned on the track between A station and B station. In step S706, it is determined whether or not the above study has been carried out for all the railways on the read road map, and when the study is completed, the process returns to the program shown in FIG. 6, otherwise, the process returns to step S701.

If it is determined in step S703 that there is no train heading from station A to station B, the process proceeds to step S801.
Compare the departure time at Station B and the arrival time at Station A with the current time,
In a succeeding step S802, it is determined whether or not there is a train heading from the B station to the A station based on the comparison result. If there is a train going from the B station to the A station, the process proceeds to step S803, and if not, the process proceeds to step S step S706. From station B to A
When there is a train heading for the station, the moving speed of the train heading from station B to station A is calculated in step S803.

[Equation 3] (Travel speed) = (Distance between station A and station B) /
(Arrival time at A station-Departure time at B station) Further, the travel distance of the train from B station is calculated.

[Equation 4] (distance traveled from B station) = (current time-B
(Departure time of station) × (moving speed of train) In step S804, positioning of the train from B station to A station is performed on the track between A station and B station. afterwards,
It proceeds to step S706.

FIG. 9 is a diagram in which stations and tracks are represented by nodes and links, and shows a train P traveling from A station to B station, which is traveling at a distance R from A station. As shown in the figure, the line is represented as an assembly of minute linear links. In addition, FIG.
Is a road map around the current location of the vehicle, and FIG.
It is a figure which shows the train running on the track centering on "Yamato station" which exists in the road map around the present location shown in FIG. When these figures are overlapped, a road map around the current position, which displays trains running as shown in FIG. 12, is completed. Note that FIG.
In the display example shown in FIG. 2, a mark considering the traveling direction is used as the current position mark of the train.

In the above-mentioned embodiment, the railway is taken as an example of the transportation means and the operation status is displayed on the road map, but the transportation means is not limited to the above-mentioned embodiment.
Train, subway, bus, monorail, ship, ferry,
Includes all regular and occasional transportation, including aircraft.

In the configuration of the above embodiment, the road map storage device 6 serves as map storage means, the display 7 serves as display means, the timetable storage device 5 serves as timetable storage means, and the control circuit 4
Represents the control means, the input device 1 constitutes the selection means, and the moving body position calculation device 8 constitutes the position calculation means.

[0018]

As described above, according to the present invention, the operation timetables of various transportation facilities are displayed, which is convenient for transportation to and from transit points of various transportation facilities and traveling by car train. You can easily get information about various types of transportation. It should be noted that by displaying the operation timetable of the selected transportation facility and its transit point, it is possible to easily obtain the operational information of the arbitrary transit station of the arbitrary transportation facility. Also,
The current position and traveling direction of the moving body of various transportation facilities are calculated based on the operation timetables of the various transportation facilities and the information about the transportation facilities, and it is displayed so as to be superimposed on the road map. Congestion at the railroad crossing that crosses is predictable, you can reach the destination quickly by avoiding the congestion, and when traveling by car ferry or car train,
It is possible to know the current location of the vehicle without using PS positioning.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing the configuration of an embodiment.

FIG. 2 is a flowchart showing an example of a timetable display program.

FIG. 3 is a diagram showing an example of a display screen until a timetable is displayed.

FIG. 4 is a flowchart showing another timetable display program example.

FIG. 5 is a diagram showing an example of a display screen until a timetable is displayed by the program shown in FIG.

FIG. 6 is a flowchart showing a train position calculation program.

FIG. 7 is a flowchart showing a train position calculation routine.

FIG. 8 is a flowchart showing a train position calculation routine following FIG. 7.

FIG. 9 is a diagram in which stations and tracks are represented by nodes and links.

FIG. 10 is a road map around the current location of the vehicle.

FIG. 11 is a diagram showing a train running near “Yamato station” existing in the road map around the current location shown in FIG. 10;

FIG. 12 is a road map around the current location showing trains running.

[Explanation of symbols]

 1 input device 2 calendar clock 3 memory 4 control circuit 5 timetable storage device 6 road map storage device 7 display 8 moving body position calculation device 9 vehicle position calculation device

Claims (5)

[Claims] 1. A vehicle-mounted navigation device comprising a map storage unit for storing a road map and a display unit for displaying the road map read from the map storage unit, the time for storing operation timetables of various transportation facilities. An on-vehicle navigation device comprising: a table storage means; and a control means for displaying the operation timetables of various transportation means stored in the timetable storage means on the display means. 2. The on-vehicle navigation device according to claim 1, further comprising a selection unit that selects an arbitrary transportation facility and an arbitrary transit point of the transportation facility, and the control unit is selected by the selection unit. An in-vehicle navigation device, which reads out and displays an operation timetable of a transportation facility and its transit points from the timetable storage means. 3. The vehicle-mounted navigation device according to claim 1 or 2, wherein the operation timetables of the various transportation means stored in the timetable storage means and the various traffics stored in the map storage means. Position control means for calculating the current position of the moving body of various transportation based on the information about the engine, the control means, the current position of the moving body of the various transportation calculated by the position calculating means road map An on-vehicle navigation device characterized by being superimposed on and displayed. 4. The vehicle navigation device according to claim 3, wherein the position calculation means calculates a traveling direction of a moving body of various transportation facilities, and the control means calculates a traveling direction calculated by the position calculation means. The vehicle-mounted navigation device, wherein the moving direction of the moving body is displayed on the display means according to the above. 5. The in-vehicle navigation device according to claim 1, wherein the various transportation means include a railroad, a subway, a bus, a monorail, a ship, a ferry, and an aircraft. In-vehicle navigation device.