JPH09236442A - Running guidance apparatus for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a running guidance apparatus by which a vehicle can be run safely by a method wherein a congested place is recognized, the avoidance route of the congested place is set and the avoidance route and the congested place are displayed. SOLUTION: A control circuit 1 sets a running route to a destination on the basis of data from a present-position recognition device 6, it reads out data on a map from a CD-ROM 11 which is mounted on a CD player 8, and the data is stored once in a RAM 4. Then, on the basis of the data stored in the RAM 4, a map which corresponds to a present position is created. In addition, video data in which the present position is overlapped with a running track is created so as to be output to a display control circuit 15, and the display control circuit 15 displays the video data on a display 16. The control circuit 1 stores a road network, and a congested place is recognized in a congested direction between the place and a crossing on the basis of received traffic information. Then, a bypass is retrieved as far as possible so as to be displayed on a screen, and a running operation is guided. In addition, congestion information and the bypass are displayed simultaneously on one screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle running guidance device, and more particularly to a vehicle running guidance device which provides an electronic device with information necessary for running guidance of an automobile or the like.

[0002]

2. Description of the Related Art As a vehicle running guide device as described above, there is, for example, Japanese Patent Laid-Open No.
As described in Japanese Patent Application Laid-Open No. 7-46112 and Japanese Patent Application Laid-Open No. 57-206819, traveling guidance is performed by displaying the current position and traveling locus on a map shown on a display such as a cathode ray tube. Are known. However, such a vehicle travel guidance device merely displays the current position and travel trajectory on a display, and thus may be involved in traffic congestion or the like. Therefore, in the vehicle guidance system disclosed in JP-A-58-143370, traffic information is received and the degree of congestion is displayed in color on a map on a display device. This is not easy because the driver has to make the selection while looking at the map display, and it is inconvenient because the detour selected from the map may not be allowed to travel due to entry prohibited or the like.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a vehicle running guidance device which can inform the driver of the most desirable detour when there is a traffic jam in the forward direction.

[0004]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention A traveling guidance system for a vehicle of the present invention includes a display means for displaying information for guiding the traveling of the vehicle, a current position detecting means for detecting the current position of the vehicle, a map and the like. Storage means for storing information for driving guidance, reception means for receiving road information around the current position of the vehicle, and signals for receiving the current position detection means, storage means and reception means to control the display means. The control means is configured to display a detour on the display means when there is a traffic jam ahead in the traveling direction. As the storage means,
It is desirable to use a compact disc.

[0005]

In the vehicle travel guidance device of the present invention, if there is a traffic jam on the planned travel route from the received traffic information, a route for avoiding the traffic jam is searched and displayed on the map on the display. Since it is displayed and the optimum travel course is provided, the driver can easily know the optimum course.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A vehicle travel guidance device according to an embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a vehicle travel guidance device according to an embodiment of the present invention. In this FIG.
Denotes a control circuit, and the control circuit 1 is preferably constituted by a microcomputer. A central processing circuit (CPU) 2, a read-only memory connected to the CPU 2 and storing the operation procedure and various constants of the CPU 2. (RO
M) 3, a random access memory (RAM) 4, and an input / output interface 5. The input / output interface 5 includes a current position recognizing device 6 which is a device for estimating and recognizing the current position of the vehicle based on geomagnetism, gyro, etc., a CD player 8 via a decoder 7, and an operation switch 10 via an encoder 9. It is connected. The CD player 8 can be filled with both a normal compact disk and a CD-ROM 11. Note that a cassette tape or the like can be used instead of the CD-ROM, but it is preferable to use a CD-ROM in terms of storage capacity and ease of handling.

[0007] The CD-ROM 11 contains information necessary for driving guidance of the vehicle, that is, a division map (see FIG. 3).
And the entire map are digitally stored in advance. This C
In the D-ROM 11, other information such as a sightseeing guide, a start-up inspection procedure, a tire replacement procedure, how to put on a tire chain, and the like may be digitally stored in advance as image information and audio information. The decoder 7 determines whether the data in the CD-ROM 11 reproduced by the CD player 8 is audio information or image information. If the data is image information, the decoder 7 directly converts the data to the audio device A.
U and supplies the data to the control circuit 1 via the input / output interface 5 when the data is image information.

The operation switch 10 functions as destination specifying means for a driver or the like to specify a destination in addition to the operation described later. When the control circuit 1 receives a data signal indicating the destination from the operation switch 10 acting as the purpose indicating means, the control circuit 1 determines the destination from the current position based on the data signal and the signal indicating the current position from the current position recognition device 6. Set the travel route to the ground. The input side of the input / output interface 5 further includes a traffic information collecting device 1.
The traffic information collection device 12 includes a communication device 13 for receiving traffic information and a traffic jam information recognition device 14 for recognizing and storing a traffic jam road from the received traffic information. I have.

A display control circuit 15 is connected to the output side of the input / output interface 5. The display control circuit 15 includes a display 16 such as a CRT or a liquid crystal display, and a video as a video display ram. Memory 1
7 is connected. The control circuit 1 receives data relating to the current signal of the vehicle from the current position recognition device 6 and data relating to the destination from the operation switch 10, and based on these data sets a travel route to the destination and maps Is stored in the CD player 8
Read from the D-ROM 11. This data is
It is stored in M4. The control circuit 1 further creates a map 20 corresponding to the current position based on the data temporarily stored in the RAM 4 and sets video data obtained by superimposing the current position 21 and the traveling locus 22 or a setting to be superimposed on the map. Video data indicating the travel route is created, and the video data is output to the display control circuit 15. The display control circuit 15 writes the video data into the video memory 17 and stores the contents of the video memory 17 into the display 1.
6 is displayed. In addition, enlargement of the image on the display 16,
Switching or the like is performed by the operation switch 10.

Next, a road network storage method by the control circuit 1,
A method for recognizing congested roads and searching for a detour will be described. Method of storing road network The road network has the intersection number between the start point and the end point (in FIG. 4, circled numbers), as shown in FIG.
It is stored in the direction in which the vehicle can travel between them as indicated by the thin arrow. The state is shown in a table in FIG. The direction in which the vehicle can travel is determined by the CD-ROM 1 as a part of the intersection attribute data.
1, and when the intersection is not close to a straight line, an inflection point is set. Note that the bold arrow in FIG. 4 indicates a preset traveling route. Recognizing Congested Roads From the received traffic information, recognize the location of congested roads at intersections and the direction of traffic jams between them. In the example of FIG. 6, the traffic congestion starts at the intersection and continues from →→→ (next segment map). Detour Search FIG. 7 shows an example of detour search. In this example, since there is traffic congestion between the intersection and the intersection on the original traveling route, the detour is searched for. First, at the intersection,
Find an intersection where you can proceed. In this example, there is a but there is a traffic jam, so choose. When an intersection that can be advanced from the next is searched, the intersection on the next segmented map is obtained. Here, since the next segmented map is closer to, a search is made with priority. From the intersection, proceed to
Is the end of the traffic jam, so choose. If it is not possible to proceed here, proceed to →, and the detour is →→→→ because the route is ahead of the traffic jam on the set route. In this way, a detour is searched as much as possible and displayed on the screen to provide travel guidance.

Next, referring to the flowchart of FIG.
An example of a display related to traffic congestion of the control circuit 1 and an example of a control mode thereof will be described. In this control, it is first determined whether there is traffic congestion information, and if this determination is NO, a map is displayed and the control is terminated. When this determination is YES, it is determined whether or not the congestion is on the traveling route, and when this determination is NO, the congestion road is simply displayed on the map and the control is terminated,
On the other hand, if this determination is YES, it is determined whether the congestion is ahead of the set traveling route in the traveling direction. This judgment is Y
In the case of ES, a search for a detour is performed to determine whether there is a detour. When the determination is YES, the detour is displayed on the map, and the control is terminated. When the determination as to whether the vehicle is ahead of the traveling route or the determination as to whether there is a detour is NO, the congested road is displayed on the map, and the control is ended.

[0012]

As described above, in the system of the present invention, when a traffic jam occurs, a desired detour is set and the desired detour is displayed on the map on the display. , It is possible to drive the car advantageously.

[Brief description of drawings]

FIG. 1 is a block diagram showing a vehicle running guidance device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an example of control of an indicator by a control circuit.

FIG. 3 is a diagram showing an example of a map trajectory display.

FIG. 4 is an explanatory diagram for explaining a storage method of a road network.

FIG. 5 is an explanatory diagram for explaining a storage method of a road network.

FIG. 6 is an explanatory diagram for explaining a method of recognizing a congested road.

FIG. 7 is an explanatory diagram for explaining a detour search method.

[Explanation of symbols]

 1 Control Circuit 6 Current Position Recognition Device 8 CD Player 10 Operation Switch 11 CD-ROM 12 Traffic Information Collection Device 16 Display

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[Procedure amendment]

[Submission date] March 10, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of Invention] Travel guidance device for vehicle

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle running guidance device, and more particularly to a vehicle running guidance device which provides an electronic device with information necessary for running guidance of an automobile or the like.

[0002]

2. Description of the Related Art As a vehicle running guide device as described above, there is, for example, Japanese Patent Laid-Open No.
As described in Japanese Patent Application Laid-Open No. 7-46112 and Japanese Patent Application Laid-Open No. 57-206819, traveling guidance is performed by displaying the current position and traveling locus on a map shown on a display such as a cathode ray tube. Are known. However, such a vehicle travel guidance device merely displays the current position and travel trajectory on a display, and thus may be involved in traffic congestion or the like. Therefore, in the vehicle guidance system disclosed in JP-A-58-143370, traffic information is received and the degree of congestion is displayed in color on a map on a display device. This is not easy because the driver has to make the selection while looking at the map display, and it is inconvenient because the detour selected from the map may not be allowed to travel due to entry prohibited or the like. Therefore, it is an object of the present invention to provide a vehicle travel guidance device that allows a driver to travel on a travel route with more peace of mind by simultaneously visually recognizing a traffic jam location and an avoidance route that avoids the traffic congestion location. Is.

[0003]

In order to achieve the above object, the present invention provides a road guidance information for a vehicle in a vehicle guidance system for setting a traveling route to a destination and guiding a vehicle to this destination. A storage means for storing information, a display means for displaying a road map and a travel route, a traffic jam recognition means for recognizing a traffic jam location, and a traffic jam location on the travel route among the traffic jam locations recognized by the traffic jam recognition means. It is characterized in that it has an avoidance route setting means for setting an avoidance route to be avoided, and a display control means for displaying the avoidance route set by the avoidance route setting means and the avoided congestion point. In the present invention thus configured, first, the traffic congestion point is recognized and the traffic congestion point is traveled to the vehicle travel guidance device that sets the traveling route to the destination and guides the vehicle to the destination. If it is on the route, an avoidance route for avoiding the congestion point is set, and the avoidance route and the avoidance congestion point on the traveling route are displayed.

As a result, according to the present invention, the driver can visually recognize the traffic jam location and the avoidance route for avoiding the traffic jam location at the same time, so that the driver can travel on the travel route more safely. Further, in the present invention, it is preferable that the display control means also displays the avoidance route and the avoided congestion point together with the congestion point not on the travel route.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION A vehicle travel guidance device according to an embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a vehicle travel guidance device according to an embodiment of the present invention. In this FIG.
Denotes a control circuit, and the control circuit 1 is preferably constituted by a microcomputer. A central processing circuit (CPU) 2, a read-only memory connected to the CPU 2 and storing the operation procedure and various constants of the CPU 2. (RO
M) 3, a random access memory (RAM) 4, and an input / output interface 5. The input / output interface 5 includes a current position recognizing device 6 which is a device for estimating and recognizing the current position of the vehicle based on geomagnetism, gyro, etc., a CD player 8 via a decoder 7, and an operation switch 10 via an encoder 9. It is connected. The CD player 8 can be filled with both a normal compact disk and a CD-ROM 11. Note that a cassette tape or the like can be used instead of the CD-ROM, but it is preferable to use a CD-ROM in terms of storage capacity and ease of handling.

[0006] The CD-ROM 11 contains information necessary for driving guidance of a vehicle, that is, a division map (see FIG. 3).
And the entire map are digitally stored in advance. This C
In the D-ROM 11, other information such as a sightseeing guide, a start-up inspection procedure, a tire replacement procedure, how to put on a tire chain, and the like may be digitally stored in advance as image information and audio information. The decoder 7 determines whether the data in the CD-ROM 11 reproduced by the CD player 8 is audio information or image information. If the data is image information, the decoder 7 directly converts the data to the audio device A.
U and supplies the data to the control circuit 1 via the input / output interface 5 when the data is image information. The operation switch 10 functions as destination specifying means for a driver or the like to specify a destination, in addition to an operation described later. When the control circuit 1 receives a data signal indicating the destination from the operation switch 10 acting as the purpose indicating means, the control circuit 1 determines the destination from the current position based on the data signal and the signal indicating the current position from the current position recognition device 6. Set the travel route to the ground. A traffic information collecting device 12 is further connected to the input side of the input / output interface 5.
Comprises a communication device 13 for receiving traffic information, and a traffic jam information recognition device 14 for recognizing and storing a traffic jam road from the received traffic information.

A display control circuit 15 is connected to the output side of the input / output interface 5. The display control circuit 15 includes a display 16 such as a CRT or a liquid crystal display, and a video display ram. Memory 1
7 is connected. The control circuit 1 receives data relating to the current signal of the vehicle from the current position recognition device 6 and data relating to the destination from the operation switch 10, and based on these data sets a travel route to the destination and maps Is stored in the CD player 8
Read from the D-ROM 11. This data is
It is stored in M4. The control circuit 1 further creates a map 20 corresponding to the current position based on the data temporarily stored in the RAM 4 and sets video data obtained by superimposing the current position 21 and the traveling locus 22 or a setting to be superimposed on the map. Video data indicating the travel route is created, and the video data is output to the display control circuit 15. The display control circuit 15 writes the video data into the video memory 17 and stores the contents of the video memory 17 into the display 1.
6 is displayed. In addition, enlargement of the image on the display 16,
Switching or the like is performed by the operation switch 10. Next, a method of storing a road network by the control circuit 1, recognizing congested roads,
A method for searching for a detour will be described. Method of storing road network The road network has the intersection number between the start point and the end point (in FIG. 4, circled numbers), as shown in FIG.
It is stored in the direction in which the vehicle can travel between them as indicated by the thin arrow. The state is shown in a table in FIG. The direction in which the vehicle can travel is determined by the CD-ROM 1 as a part of the intersection attribute data.
1, and when the intersection is not close to a straight line, an inflection point is set. Note that the bold arrow in FIG. 4 indicates a preset traveling route. Recognizing Congested Roads From the received traffic information, recognize the location of congested roads at intersections and the direction of traffic jams between them. In the example of FIG. 6, the traffic congestion starts at the intersection and continues from →→→ (next segment map). As is clear from FIG. 6, in this example, the congestion points and the congestion sections between intersections other than the preset traveling route are also displayed. Therefore, even if the driver runs off the preset travel route and travels on his own will,
It is possible to drive while avoiding a traffic jam location or a traffic jam section, which improves convenience. Detour Search FIG. 7 shows an example of detour search. In this example, since there is traffic congestion between the intersection and the intersection on the original traveling route, the detour is searched for. First, at the intersection,
Find an intersection where you can proceed. In this example, there is a but there is a traffic jam, so choose. When an intersection that can be advanced from the next is searched, the intersection on the next segmented map is obtained. Here, since the next segmented map is closer to, a search is made with priority. From the intersection, proceed to
Is the end of the traffic jam, so choose. If it is not possible to proceed here, proceed to →, and the detour is →→→→ because the route is ahead of the traffic jam on the set route. In this way, a detour is searched as much as possible and displayed on the screen to provide travel guidance. Further, as clearly shown in FIG. 7, the traffic jam information including the traffic jam location and the traffic jam direction between the intersections and the searched detour are simultaneously displayed on one screen.

Next, referring to the flowchart of FIG.
An example of a display related to traffic congestion of the control circuit 1 and an example of a control mode thereof will be described. In this control, it is first determined whether there is traffic congestion information, and if this determination is NO, a map is displayed and the control is terminated. When this determination is YES, it is determined whether or not the congestion is on the traveling route, and when this determination is NO, the congestion road is simply displayed on the map and the control is terminated,
On the other hand, if this determination is YES, it is determined whether the congestion is ahead of the set traveling route in the traveling direction. This judgment is Y
In the case of ES, a search for a detour is performed to determine whether there is a detour. When the determination is YES, the detour is displayed on the map, and the control is terminated. When the determination as to whether the vehicle is ahead of the traveling route or the determination as to whether there is a detour is NO, the congested road is displayed on the map, and the control is ended.

[0009]

As described above, according to the vehicle travel guidance device of the present invention, the driver can view the traffic congestion location and the avoidance route that avoids the traffic congestion location at the same time, so that the driver can travel on the travel route more safely. Can run. In addition, the driver can roughly understand the entire traveling route, and by observing the displayed congestion point and the avoidance route, where the driver avoids the traveling route or when the congestion occurs. It is possible to intuitively grasp the section in which it is located. Further, since the driver can grasp the positional relationship of the congestion point with respect to the set traveling route, it becomes possible to more effectively travel while avoiding the congestion.

[Brief description of drawings]

FIG. 1 is a block diagram showing a vehicle running guidance device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an example of control of an indicator by a control circuit.

FIG. 3 is a diagram showing an example of a map trajectory display.

FIG. 4 is an explanatory diagram for explaining a storage method of a road network.

FIG. 5 is an explanatory diagram for explaining a storage method of a road network.

FIG. 6 is an explanatory diagram for explaining a method of recognizing a congested road.

FIG. 7 is an explanatory diagram for explaining a search method for a bypass (avoidance route).

[Explanation of Codes] 1 Control Circuit 6 Current Position Recognition Device 8 CD Player 10 Operation Switch 11 CD-ROM 12 Traffic Information Collection Device 16 Display

Front page continuation (72) Inventor Kiyomi Suzuki 2610 Pioneer Co., Ltd. Tokorozawa Plant, Hanazono 4, Tokorozawa, Saitama Prefecture

Claims (2)

[Claims] 1. A travel guidance device for a vehicle, which sets a travel route to a destination and guides a vehicle to this destination, a storage means for storing road map information and travel route information, and a road map and a travel route are displayed. Display means, a traffic jam recognition means for recognizing a traffic jam location, and an avoidance route setting means for setting an avoidance path for avoiding a traffic jam location on the travel route among the traffic congestion locations recognized by the traffic congestion recognition means, A traveling guide device for a vehicle, comprising: an avoidance route set by the avoidance route setting means; and a display control means for displaying the avoided congestion point. 2. The display control means displays the avoidance route and the avoided congestion point together with the congestion point not on the travel route on the one map. Vehicle drive guidance device.