JPH0651819U - Routing device - Google Patents

Abstract

(57) [Summary] [Purpose] It is easy to determine the route by accurately calculating the time required to reach the destination. [Structure] After setting a departure point A and a destination point B, a route is determined by connecting roads in a plurality of sections existing between the points A and B. In the determined route, the required time is calculated from the average vehicle speed and the distance of each road stored in the external storage device 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a route determining device that determines a desired route on a road in which a starting point and a destination point are set.

[0002]

[Prior art]

 This type of route determination means uses a vehicle speed sensor and a direction sensor, and is mounted on an in-vehicle navigation device that estimates the current location of the vehicle from map information recorded on a recording medium, past data, etc. And the destination point are set, and the route is determined so that the optimum time to travel at both points is, for example, the shortest time and the lowest highway toll. The map information recorded on the recording medium is numbered for each node such as a corner of a road, and is also subdivided and recorded for each link between the nodes. There are usually multiple candidate roads between the starting point and the destination point, and after the multiple candidate roads are searched by the central processing unit, the conditions such as the shortest time among the candidate roads are set. The route that satisfies is determined.

[0003]

[Problems to be solved by the device]

 The present invention is a further development of the above route determining device, and provides a route determining device capable of calculating information on the entire route based on the road information stored for each link included in the route to the destination point. The purpose is to

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention sets a starting point and a destination point on a road of map information, and determines a route by connecting roads of a plurality of sections existing between the two points. The device is a route determination device including a storage medium for storing road information of each section and a calculation means for calculating based on various road information stored in the storage medium.

[0005]

【Example】

 FIG. 1 is an overall configuration diagram of a vehicle-mounted navigation device, FIG. 2 is an explanatory diagram of route determination from a departure point to a destination point, and FIG. 3 is a flowchart of control operation.

In the vehicle-mounted navigation device 1 shown in FIG. 1, the central processing unit 4 estimates the current position of the vehicle based on the data provided from the azimuth sensor 2 and the mileage sensor 3, and the current position is displayed on the display device 5. It is synthesized and displayed on the road map. The map information provided to the display device 5 is stored in the external storage device 6 such as a CD-ROM. The data stored in the external storage device 6 is read by the media controller 7 and stored in the buffer memory 8 via the central processing unit 4. The buffer memory 8 sequentially sends the necessary data to the image memory 9 via the central processing unit 4. The data stored in the image memory 9 is converted into an image by the display control device 10 and displayed on the display device 5. The data stored in the image memory 9 is updated as the vehicle runs. A keyboard 11 is used to input and output various operations.

Further, the external storage device 6 stores the average vehicle speed, the distance, etc. of each road. The average vehicle speed of each road section is statistically derived from past data. It depends on the day of the week, the month, etc.

Next, to explain the route determination from the departure point to the destination point, first, while operating the keyboard 11 on the map displayed on the display device 5 as shown in FIG. After setting the destination point B, the roads of a plurality of sections existing between the two points A and B are connected to determine the route. For example, if Course 1 of Departure Point A-Intersection a-Intersection b-Intersection d-Intersection j-Intersection k-Destination B is determined, the distances of each section are divided by the average vehicle speed and the time obtained is integrated. The required time for course 1 is calculated. In addition, in the figure, one scale indicates 1 km. Course 1 required time = 3/20 + 11/20 + 3/30 + 7/15 + 3/30 + 3/20 = 1.52 o'clock

If the vehicle travels 10 km with 1 liter of gasoline, and 1 liter of gasoline is 100 yen, the gasoline cost is calculated. Gasoline fee of course 1 = (3 + 11 + 3 + 7 + 3 + 3) / 10 * 100 = 300 yen

Further, when another course, for example, the course 2 of the departure point A-intersection a-intersection e-intersection f-intersection h-intersection i-intersection k-destination B is determined, each section is the same as the course 1. The required time for Course 2 is calculated by adding up the time obtained by dividing the distance by the average vehicle speed. Course 2 required time = 3/20 + 7/80 + 8/110 + 3/100 + 3/90 + 3/30 + 3/20 = 0.62 o'clock

Further, as in the course 1, the gasoline cost is calculated. Gasoline fee of course 2 = (3 + 7 + 8 + 3 + 3 + 3 + 3) / 10 * 100 = 300 yen

Further, toll charges such as high-speed toll (0.1 km / yen) and crossover fee (200 yen) are calculated. Toll of Course 2 = 8 / 0.1 + 200 = 80 + 200 = 280 Yen Cost of Course 2 = 300 + 200 = 300 + 280 = 580 Yen

Then, the driver may select a desired course by referring to the calculation results of both courses 1 and 2.

Next, the control operation of the central processing unit 4 will be described based on the flowchart shown in FIG. 3. First, when the destination point is set and the route is determined, the required time of each section is calculated, and the total time is calculated. The required time of the section is calculated and then integrated to calculate the required time of the entire course, and the calculation result is displayed on the display device 5.

[0015]

[Effect of device]

 As is clear from the above description, according to the present invention, the required time is calculated based on the road distance of each section from the departure point and the destination point and the average vehicle speed information of the section. It becomes easy to decide which route to select.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a vehicle-mounted navigation device.

FIG. 2 is an explanatory diagram of determining a route from a departure point to a destination point.

FIG. 3 is a flowchart of control operation.

[Explanation of symbols]

 1 Car Navigation System 4 Central Processing Unit 5 Display Device 6 External Storage Device 11 Keyboard

Claims (2)

[Scope of utility model registration request] 1. A route determination device that sets a starting point and a destination point on a road of map information and connects roads of a plurality of sections existing between both points to determine a route, wherein A route determination device comprising: a storage medium that stores road information; and a calculation unit that calculates based on various road information stored in the storage medium. 2. The road information stored in the storage medium is a distance and an average vehicle speed of each section in the map information, and the calculating means determines based on the distance and the average vehicle speed of each section in the map information. 2. The route determination device according to claim 1, wherein the required time of the route thus calculated is calculated.