JP3389693B2 - Route guidance device for vehicles - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a route guidance device for a vehicle mounted on a vehicle and displaying a map of a route on which the vehicle can travel, and more particularly, to a navigation screen from a present location to a destination. The present invention relates to a route guidance device for a vehicle that displays traveling data of a route that has been traveled in the past together with a recommended route.

[0002]

2. Description of the Related Art In recent years, a vehicle route guidance device for displaying a map of a road on which a vehicle can run has been installed in a vehicle to improve the convenience of the vehicle by displaying a route for a crew member to a destination. I am trying.

Japanese Laid-Open Patent Publication No. 1-130299 discloses a conventional vehicle route guidance device. In the above-mentioned Japanese Laid-Open Patent Publication No. 1-130299, the crew members only specify the starting and ending points, and the optimum route under each condition is displayed, and these are displayed on the navigation screen at the same time so that they can be identified. This makes it possible to select a desired route extremely easily.

FIG. 9 shows a display example of the optimum route displayed on the navigation screen. First, on the navigation screen, the starting point (node N1) is set for the traveling route from the starting point (node N1) designated by the crew to the ending point (node N5).
From the node N2 to the lower path in the figure by the node N2
The first traveling route reaching the end point (node N5) through the route on the lower side in the figure is selected and displayed in the order of → node N4 → node N5. Further, on the navigation screen, from the starting point (node N1) to the middle of the route (node N3), the node N4 → node N5 of the route on the lower side of the drawing passes through the end point (node N5).
2nd traveling route to reach the upper route (node N1
→ Node N3 → Node N5) and the third travel route or the like that reaches the end point (node N5) by the shortest route length is selected and displayed. Further, on the right side of each of the first to third travel routes displayed on the navigation screen in the figure, the distance between the start and end points of each route, the time required to reach the start and end points, and the cost are displayed. The crewmember selects the route to the destination (node N5) from the first traveling route and the like displayed on the navigation screen while considering the conditions such as the distance.

[0005]

However, in the route guidance device for a vehicle disclosed in Japanese Patent Laid-Open No. 1-130299, when there are a plurality of optimum routes displayed on the navigation screen, a crew member selects from the plurality of optimum routes. When making a selection, conditions such as mileage, required time and cost must be taken into consideration. In this case, the crew member does not always accurately store the time required to actually travel on the route traveled in the past. Therefore, since there is a time lag between the estimated required time displayed on the navigation screen and the time required for actual driving, the crew members request that the time required for actual driving be displayed as a reference. Was there.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to display a plurality of recommended items displayed on a navigation screen by displaying running data of past runs together with recommended routes. It is an object of the present invention to provide a route guidance device for a vehicle that facilitates selection by a crew member from a route and improves convenience of the device.

[0007]

In order to achieve the above object, the first invention according to claim 1 uses the claim correspondence diagram of FIG. 1 to provide a map for storing map information of a travelable route of a vehicle. Information storage means 101, current location detection means 103 for detecting the current location of the vehicle, destination setting means 105 for setting the destination of the vehicle, and current location detection means 10
Present position detected by 3 and the destination setting means 1
Recommended route display means 10 for calculating a recommended route from the map information stored in the map information storage means 101 based on the destination set by 05 and displaying the recommended route.
7, a travel data storage means 109 for storing an estimated required time from a starting point to an end point of a route on which the vehicle has traveled in the past, an actual required traveling time and a date, and this traveling data storage. Of the current position detected by the current position detection unit 103 and the destination set by the destination setting unit 105 from the route from the latitude and longitude indicated by the origin of the route stored in the means 109 to the latitude and longitude indicated by the end of the route. Route search means 1 for searching the route shown
11 and the traveling data storage means 109 that matches the route indicated by the present location and the destination by the route searching means 111.
Estimated required time from the start point to the end point of the route of the latest date among the dates from the start point to the end point of the route stored in
The recommended route display means 10 indicates the actual travel time and date.
The gist is that the vehicle is provided with the travel data display means 113 for displaying together with the recommended route calculated by 7.

According to a second aspect of the present invention, the route that the vehicle stored in the traveling data storage means has traveled in the past indicates an area unit including the point indicated by the starting point of the route and the end point of the route. The gist is that the information is stored in area units including points.

According to a third aspect of the present invention, a route stored in the traveling data storage means, in which the vehicle has traveled in the past, includes a point unit indicating a starting point of the route and an ending point of the route. The gist is that the points are stored in units of points.

According to a fourth aspect of the present invention, the route searching means 111 detects the present location from the route in area units including the starting point and the ending point of the route stored in the traveling data storage means. The gist of the present invention is to search for a route indicated by the present location detected by and the destination set by the destination setting means.

According to a fifth aspect of the present invention, the route searching means 111 detects the current position detecting means from the point-by-point route indicated by each of the starting point and the ending point of the route stored in the traveling data storage means. The gist of the present invention is to search for a route between the present location and the destination set by the destination setting means.

[0012]

According to the first aspect of the present invention, the vehicle destination is set by the current location detected by the current location detecting means 103 for detecting the current location of the vehicle and the destination setting means 105. When the route from the current position to the destination is set, the route search unit 111 determines the latitude and longitude of the route from the current position to the destination, which is stored in the traveling data storage unit 109 and which is the starting point of the route on which the vehicle has traveled in the past. To the latitude and longitude indicated by the end point are searched. A route that matches the route indicated by the current location and the destination by the search by the route search means 111 is the travel data storage means 10
9 is searched. After searching, the traveling data display means 113
Therefore, the estimated time required from the start point to the end point of the route with the latest date among the dates from the start point to the end point of the matched route,
Since the actual travel time and date are displayed on the navigation screen together with the recommended route calculated by the recommended route display means 107, the crew can easily select from a plurality of recommended routes displayed on the navigation screen. The convenience of the device can be improved.

A second invention is the traveling data storage means 1
The route traveled by the vehicle in the past is stored in area 09 including the point indicated by the starting point of the route and the area unit including the point indicated by the end point of the route. The probability of searching the route and the matching route stored in the traveling data storage means can be improved.

According to a third aspect of the present invention, the route that the vehicle stored in the traveling data storage means has traveled in the past is stored in point units indicating the starting point of the route and point units indicating the ending point of the route. Therefore, it is possible to retrieve the route stored in the highly accurate traveling data storage means that is similar to the route from the current location to the destination.

A fourth invention is the route search means 111.
Indicates the current location detected by the current location detection means and the destination set by the destination setting means from an area-based route including the starting point and the ending point of the route stored in the travel data storage means. Since the route is searched, it is possible to improve the probability that the route from the current position to the destination matches the route stored in the travel data storage means.

A fifth invention is the route search means 111.
Is the route indicated by the current location detected by the current location detection means and the destination set by the destination setting means from the point-by-point route indicated by each of the starting point and the ending point of the route stored in the travel data storage means. Since the search is performed, it is possible to search for a route stored in the highly accurate traveling data storage means that is similar to the route from the current position to the destination.

[0017]

[0018]

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The control according to one embodiment of the vehicle route guiding apparatus of the present invention will be described with reference to the block diagram of FIG.

The above vehicle route guidance device includes a setting input unit 1, a current position detection unit 3, a CPU 5, a storage unit 7 and a storage unit 9. The setting input section 1 (destination setting means)
Is composed of, for example, a keyboard or the like, and a crew member inputs a point indicating a destination from the keyboard or the like.
The current position detection unit 3 (current position detection means) is, for example, a GPS
(Global positining system), in-vehicle distance sensor,
It is composed of an azimuth sensor and the like, and detects the current location where the vehicle is currently traveling and outputs a detection signal to the CPU 5. C
The PU 5 (route search means, travel data display means) controls the entire device, for example, search of travel data described later, and stores a program for controlling the operation of the device stored in the storage unit 7. Run. The storage unit 7 (map information storage means) is composed of, for example, a CD-ROM, and stores map information indicating a route along which the vehicle travels and a program for controlling the operation of the CPU 5. The storage unit 9 (running data storage means) is composed of, for example, a RAM, and stores a starting place area, a destination area, an estimated required time, an actual required traveling time, etc. The vehicle traveling database 19 to be stored is stored.

The vehicle route guidance device also includes a road traffic information infrastructure communication unit 13, a clock 15, a display control unit 15 and a display unit 17. The road traffic information infrastructure communication unit (hereinafter referred to as the infrastructure communication unit) 13 is composed of, for example, a roadside beacon, a car phone, or the like, and the current location and setting of the vehicle detected by the current location detection unit 3 are set. The destination set from the input unit 1 is transmitted together with the vehicle ID and the like to an infrastructure-side computer (not shown) via a roadside beacon or a car phone. After the transmission, the infrastructure-side computer (not shown) calculates route information including a plurality of recommended routes from the current position transmitted from the infrastructure communication unit 13 according to the destination and an estimated required time of the recommended routes. After the calculation, the infrastructure side computer (not shown) transmits a plurality of recommended routes, and the infrastructure communication unit 13
Receive multiple recommended routes. The infrastructure communication unit 13
The infrastructure computer (not shown) is a full-duplex communication system that enables simultaneous bidirectional communication. The infrastructure communication unit 13 also calculates a plurality of recommended routes between the vehicle and the roadside beacon. The clock 15 sends a time signal indicating the date and time to the CPU in the date column of the vehicle traveling database 19 described later.
Output to 5. Display control unit 15 (driving data display means)
Is provided with a display controller, for example, to control the display of the navigator screen displayed on the display unit 17. Display 17
Displays a plurality of recommended routes calculated by the infrastructure-side computer and traveling data of routes on which the vehicle has traveled in the past from the current location to the destination.

Next, referring to FIGS. 3 to 5, a route from the current position detected by the current position detecting unit 3 to the destination input by the setting input unit 1 and a route which has been traveled in the past and traveling Explain the data search. here,
FIG. 3 shows map information stored in the storage unit 7, and FIG.
Is a vehicle travel database 19 stored in the storage unit 9.
FIG. 5 is a diagram showing the departure area of FIG.

First, FIG. 3 shows map information stored in the storage unit 7. For example, a map showing the Kanto region is divided into meshes, and each area is divided into A1 to C2 area units. ing. From the divided area units A1 to C2, the CPU 5, which is a route search means, searches for a route that matches the route indicating the current location detected by the current location detection unit 3 and the destination input by the setting input unit 1. . When searching for the above route, the latitude and longitude indicated by the current location and the destination are compared with the latitude and longitude indicated by the departure area (starting point) and the destination area (end point) in area units to match the current location. Search for a destination area (starting point) and a destination area (ending point) that matches the destination.

As shown in FIG. 4, the vehicle traveling database 19 storing the traveling data of the vehicle traveling in the past, which is stored at the predetermined address of the storage unit 9, stores the departure area and the like. The vehicle traveling database 19 includes a departure area indicating the current location detected by the current location detecting unit 3 and a destination area indicating a destination input by the setting input unit 1, a link, a node, a column, ... Expected required time, actual It consists of travel time and date columns. As shown in FIG. 5, the starting area and the destination area are divided into, for example, an area of the starting area A1 by dividing arbitrary terrain into a grid pattern and linking the intersections of the areas with the areas a1 and a2. Let α1. Destination area C below
Up to 2 are connected by a column such as node a2 and link α2. Similarly to the departure area, the destination area is also divided into areas in a grid pattern to set a destination area C2. Returning to FIG. 4, the expected travel time at the right end of the vehicle travel database 19 is the time from the departure area A1 to the destination area C2 calculated by the infrastructure-side computer as a recommended route when traveling in the past, and the actual travel time is required. Is the time when the vehicle traveled in the past. The date indicates the date and time when the vehicle having the actual traveling time required traveled. The departure place area is stored in area units including points indicating the departure place, and the destination area is stored in area units including points indicating the destination. Although the above-described vehicle traveling database 19 has been described as a case where the departure point area including the point indicating the departure point and the destination area including the point indicating the destination are stored in area units. It is also possible to store the point indicating the ground and the point itself indicating the destination in units of points. In this case, the CPU 5 which is the route search means, the current location detected by the current location detection means 3 and the setting input unit 1
From the destination entered by the vehicle traveling database 19
The search is performed from the point indicating the starting point and the point indicating the destination in point units stored in.

FIG. 6 shows an example of a display example displayed on the navigation screen of the display unit 17. Currently, the current location where the vehicle is traveling is approximately the center on the lower side in the figure, and the route from the current location to the destination indicated by the double circle at the upper center in the figure is displayed. The estimated required time is 30 minutes when traveling by the route A shown by the solid line on the right side of the figure, 22 minutes when traveling by the route B, and 27 minutes when traveling by the route C. The above routes A to C are displayed by the conventional route guidance device for a vehicle, but in the present embodiment, the travel record indicated by the broken line on the left side of the display unit 17 in the drawing is March 29, 1994. Shows that the actual required time required for the actual traveling was 32 minutes, while the expected required time was 25 minutes.

Next, the operation of this embodiment will be described with reference to the flowcharts of FIGS. 7 and 8. First, the crew member turns on the ignition switch to drive the own vehicle, and the current location detection unit 3 detects the current location of the traveling own vehicle. After the detection, the crew member inputs the destination via the keyboard of the setting input unit 1 (steps 100 to 110). After the input, the crew member transmits the current location and the destination together with the vehicle ID and the like to the infrastructure-side computer via the infrastructure communication unit 13, for example, a roadside beacon or a car phone. After the transmission, the vehicle is placed in a waiting state for completion of the calculation by the infrastructure-side computer, and upon reception, the process proceeds to step 140 (steps 120 to 130).

In step 140, the infrastructure communication unit 13 receives the route information including a plurality of recommended routes through the road-vehicle communication. After receiving, the CPU 5 displays the map information of the area including the current location and the destination, for example, the route A to the route C shown in FIG. 6 on the navigation screen and attaches to the plurality of recommended routes previously received on the screen. Information such as estimated time required is displayed and the process proceeds to step 190 (step 140).
~ 160).

On the other hand, in step 110, when the crew member sets the destination from the setting input unit 1, the recommended route is calculated by transmission / reception between the roadside beacon and the vehicle. After the calculation, the CPU 5 displays a plurality of recommended routes, for example, route A to route C as route information on the navigation screen of the display unit 17 as in step 150, and then, in step 190.
(Steps 170 to 180).

When the process proceeds to step 190, the CPU 5 sets the starting point area or the destination point area corresponding to the starting point and the ending point that have actually been stored in the vehicle traveling database 19 with the current position as the starting point and the destination as the ending point. Search from the indicated latitude and longitude. When the starting point area or the destination area that matches the current location and the destination area is searched for, the CPU 5 draws a node and a link from the matching starting point area to the destination area. C after drawing the link
The PU 5 draws the travel data of the expected travel time and the actual travel time required for the vehicle to travel in the past. If there are multiple routes from the departure area to the destination area as a result of the search, C
The PU 5 extracts the latest route from the dates stored in the vehicle travel database 19 (step 190).

After the extraction, the display control unit 15 displays the actual travel times of the departure area and the destination area that match the vehicle travel database 19 on the navigation screen of the display unit 17 (step 200).

After being displayed on the navigation screen of the display unit 17, the crew member travels along the route B in the route guidance mode to the destination by selecting the route B having the shortest expected travel time shown in FIG. 6, for example. When the vehicle 5 arrives at the destination after traveling by the guidance of the route B, the CPU 5 stores the traveling data, the place of departure, the destination, the route (node, link, row), the estimated required time, the actual required time and the date in the vehicle traveling database 19. It is stored (steps 210 to 240).

As a result, since the route information such as the route actually traveled in the past or the required time is displayed on the navigation screen of the display unit 17, the crew can easily select from the plurality of recommended routes displayed on the navigation screen. The convenience of the device can be improved.

Since the starting point and the destination stored in the vehicle traveling database 19 are divided into area units, the CPU 5 searches for the destination input from the setting input section 1 and the current location detected by the current location detecting section 3. The probability of matching can be improved.

Furthermore, since the CPU 5 which is the route search means searches the route that the vehicle has traveled in the past from the vehicle travel database 19 for each area, the probability of matching by the search can be improved.

Further, since the CPU 5 which is the route search means searches the route traveled in the past from the vehicle travel database 19 on a point-by-point basis, it is stored in the highly accurate travel data storage means similar to the route from the present location to the destination. You can search the route.

In this embodiment, the latest route is searched and displayed when there are a plurality of routes by the search. However, the present invention is not limited to this. It is also possible to change it by incorporating it into a program that controls the operation of the device.

[0038]

As described above, according to the first aspect of the present invention, the current position detected by the current position detecting means 103 for detecting the current position of the vehicle and the destination setting means 105 set the destination of the vehicle. When the route from the current position to the destination is set, the route search unit 111 determines from the route from the current position to the destination the latitude indicated by the starting point of the route that the vehicle stored in the traveling data storage unit 109 has traveled in the past,
A route from the longitude to the latitude and longitude indicated by the end point is searched. The route search means 111 searches the travel data storage means 109 for a route that matches the route indicated by the current location and the destination. After the search, the travel data display means 113 displays the estimated required time from the start point to the end point of the route having the latest date among the dates from the start point to the end point of the matched route, the actual travel required time and the date on the navigation screen. Since it is displayed together with the recommended route calculated by the route display means 107, the crew can easily select from the plurality of optimum routes displayed on the navigation screen, and the convenience of the device can be improved.

A second aspect of the present invention is the traveling data storage means 1
The route traveled by the vehicle in the past is stored in area 09 including the point indicated by the starting point of the route and the area unit including the point indicated by the end point of the route. It is possible to improve the probability of matching the search between the route and the route stored in the travel data storage means.

According to a third aspect of the present invention, the route that the vehicle stored in the traveling data storage means has traveled in the past is stored in point units indicating the starting point of the route and point units indicating the ending point of the route. Therefore, it is possible to realize the search of the route stored in the traveling data storage means with high accuracy which is similar to the route from the current position to the destination.

The fourth aspect of the present invention is the route search means 111.
Indicates the current location detected by the current location detection means and the destination set by the destination setting means from an area-based route including the starting point and the ending point of the route stored in the travel data storage means. Since the route is searched, it is possible to improve the probability that the route from the current position to the destination matches the route stored in the travel data storage means.

A fifth aspect of the present invention is the route search means 111.
Is the route indicated by the current location detected by the current location detection means and the destination set by the destination setting means from the point-by-point route indicated by each of the starting point and the ending point of the route stored in the travel data storage means. Since the search is performed, it is possible to realize the search of the route stored in the traveling data storage unit with high accuracy that is similar to the route from the current position to the destination.

[0043]

[Brief description of drawings]

FIG. 1 is a diagram corresponding to a claim of the present invention.

FIG. 2 is a block diagram showing the control of one embodiment of the vehicle route guidance device of the present invention.

FIG. 3 is a state in which a certain area is divided into meshes.

FIG. 4 is a diagram showing a database.

FIG. 5 is a diagram showing a departure area.

FIG. 6 is a display example displayed on a navigation screen.

FIG. 7 is a flowchart showing the operation of the present invention.

FIG. 8 is a flowchart showing the operation of the present invention.

FIG. 9 is a diagram showing a display example of an optimum route.

[Explanation of symbols]

1 Setting input section 3 Current location detector 5 CPU 7, 9 memory 13 Infrastructure Communications Department 15 Display control unit 17 Display 19 Vehicle driving database 101 map information storage means 103 Current location detection means 105 Destination setting means 107 Recommended route display means 109 traveling data storage means 111 Route search means 113 Running data display means

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Claims (5)

(57) [Claims] 1. A map information storage means for storing map information of a travelable route of a vehicle, a current location detection means for detecting a current location of the vehicle, a destination setting means for setting a destination of the vehicle, A recommended route that calculates a recommended route from the map information stored in the map information storage unit based on the current position detected by the current position detection unit and the destination set by the destination setting unit and displays the recommended route. In a vehicle route guidance device comprising a display means, a travel data storage means for storing an estimated required time from a starting point to an end point of a route on which the vehicle has traveled in the past, an actual required traveling time, and a date, and the traveling data storage means. The current location and the eyes detected by the current location detection means from the route from the latitude and longitude indicated by the origin of the route stored in the means to the latitude and longitude indicated by the end point. Route search means for searching the route indicated by the destination set by the place setting means, and the starting point of the route stored in the travel data storage means that matches the route indicated by the current location and the destination by the route search means From the starting point to the ending point of the route of the latest date of the date from the end point, the actual travel required time and the date together with the recommended route calculated by the recommended route display means, and the travel data display means, A route guidance device for a vehicle, comprising: 2. The route that the vehicle stored in the traveling data storage means has traveled in the past is stored in area units including the point indicated by the starting point of the route and in area units including the point indicated by the end point of the route. The route guide device for a vehicle according to claim 1, wherein: 3. The route that the vehicle has traveled in the past stored in the traveling data storage means is stored in units of points indicating the starting point of the route and points indicating the ending point of the route. The route guidance device for vehicles according to claim 1. 4. The route search means is a current location and destination setting means detected by the current location detection means from an area-based route including a starting point and an ending point of the route stored in the travel data storage means. The route guidance device for a vehicle according to claim 1, wherein the route indicated by the destination set by is searched. 5. The route search means sets by the destination setting means and the present location detected by the present location detection means from the point-by-point route indicated by each of the starting point and the ending point of the route stored in the travel data storage means. The route guidance device for a vehicle according to claim 1, wherein the route indicated by the selected destination is searched.