JP3799495B2 - Navigation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a navigation device that displays information related to a road corresponding to a driving support system.
[0002]
[Related background]
In recent years, driving support systems that support safe driving of vehicles have been studied. For example, a lane departure prevention support system that prevents a vehicle from deviating from a driving lane, a vehicle head collision prevention support system that provides information on vehicles traveling in the vicinity of intersections and prevents head collisions, right turn vehicles at intersections, and the like Right-turn car collision prevention support system that prevents collision with a straight vehicle on the opposite lane, crossing pedestrian collision prevention support system that provides information on pedestrians crossing the pedestrian crossing, information such as freezing of the road surface and running Support system for road surface information utilization / maintenance maintenance to provide distance information between vehicles, curve entry risk prevention support system to provide information such as curve radius and appropriate curve approach speed to ensure safe driving on curves, curve It is each driving support system such as a front obstacle collision prevention support system that provides forward obstacle information.
[0003]
In order to support these driving support systems, the vehicle side is equipped with a device that can support each driving support system, a lane marker is installed on the driving lane, a sensor for detecting various obstacles on the road, etc. It is necessary to develop an infrastructure that provides various information to the traveling vehicle on and around the road.
[0004]
[Problems to be solved by the invention]
Therefore, in order for the driver to effectively use the driving support system, it is necessary to provide the driver with various types of information including route guidance information for driving support system compatible roads.
The present invention has been made to satisfy the above-described need, and an object of the present invention is to provide a navigation device that can inform a driver of information related to a driving support system-compatible road.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a navigation device according to claim 1 of the present invention reads map information from map information storage means for storing map information, displays a map on a monitor screen, and displays the displayed map. The vehicle is provided with means for displaying the current position, traveling direction, etc. of the vehicle on the top, and for reading out information related to the driving support system compatible road from the driving support system compatible road information storage means.
[0006]
Therefore, when the driver activates the vehicle-side device corresponding to the driving support system, the navigation device displays the current position of the vehicle, etc., and the driving support system compatible road information that can use the driving support system as other road information. It is possible to display them on the monitor screen separately from the above. Thus, the driver can easily know the current position of the vehicle and the road information of the road corresponding to the driving support system while the vehicle is running, using the visual information on the monitor screen of the navigation device.
[0007]
According to a second aspect of the present invention, the navigation device according to claim 2 is configured such that the driver operates a vehicle-side device corresponding to the driving support system, and a means for guiding the route to the destination using the map information read from the map information storage means. And means for associating the road information corresponding to the driving assistance system with the route guidance information to the destination.
Therefore, the navigation device can preferentially display the route information via the road corresponding to the driving support system that the driver wants to use to the destination on the monitor screen. Thus, if the driver drives the vehicle according to the route guidance on the monitor screen of the navigation device, the driver can easily go to the destination via the road corresponding to the driving support system he wants to use.
[0008]
In the navigation device according to claim 3, the type of driving that the driver wants to use from a plurality of types of driving support systems (each driving support system that provides the lane departure prevention support system, the head collision prevention support system, etc.). When the vehicle side device corresponding to the support system is operated, the road information corresponding to the type of the driving support system is distinguished from other road information and displayed on the monitor screen.
[0009]
Therefore, the driver can know the road information corresponding to the driving support system that he wants to use and the current position of the vehicle, and if he drives the vehicle according to the route guidance on the monitor screen of the navigation device, the driver can use the driving support system he wants to use You can easily get to your destination via the road.
According to a fourth aspect of the present invention, the navigation device includes means for displaying a plurality of types of driving support systems that can be used on the driving support system-compatible road on a monitor screen. Therefore, the driver can select and use an arbitrary driving system from the displayed plural types of driving support systems.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a navigation device according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the navigation apparatus 1 includes a map information storage means (for example, a CD-ROM) 2, a road information storage means 3 constituting a road information storage means corresponding to a driving support system, and a driving support system operation detection. Operation detecting means 4 constituting means, monitor 5 constituting display means, route guidance means 6, monitor control unit 7 for controlling the monitor 5 to display information on the screen, and global positioning system (hereinafter referred to as "GPS") ) The GPS receiver 8 that receives satellite signals, the communication unit 9 that is responsible for communication between the driving support system-compatible road (hereinafter referred to as “support system road”) infrastructure and the navigation device 1, and the navigation device 1. A control unit 10 is provided for controlling the operation and the like of each component. In addition, the control part 10 is comprised mainly by the microprocessor etc., and can control the navigation apparatus 1 according to a predetermined program.
[0011]
Then, switches SW11a to SW11d for turning on / off the operation of devices corresponding to the respective driving support systems mounted on the vehicle side (hereinafter referred to as “vehicle-side devices”, these vehicle-side devices are not shown) are provided. It is connected to the operation detection means 4. The GPS receiving unit 8 is connected to the GPS receiving antenna 8a, and the communication unit 9 is connected to the communication unit antenna 9a.
[0012]
Next, the operation of the navigation device 1 will be described.
The GPS receiving unit 8 included in the navigation device 1 receives a signal from a GPS satellite, and the control unit 10 calculates the current position of its own vehicle based on the received signal. From this calculation result, the control unit 10 reads out map information around the current position of the map information storage unit 2 and displays it on the screen of the monitor 5 via the monitor control unit 7 and also displays the vehicle information on the displayed map. Displays the current position and direction of travel.
[0013]
The road information storage means 3 has various types of information related to the support system road, such as what type of driving support system infrastructure a certain road has in which section. Therefore, when the driver operates the vehicle side device by operating the switches SW11a to SW11d, the control unit 10 can recognize the driving support system that the driver wants to use via the operation detection unit 4. Then, the control unit 10 reads various information related to the support system road stored in the road information storage unit 3 based on the calculation result of the current position of the vehicle, and adds the support system road to the map information of the map information storage unit 2. Can be displayed on the monitor 5 in association with each other.
[0014]
In addition, it is preferable that the various information regarding a support system road is updated according to the installation condition of a driving support system. Such update information may be transmitted by radio waves or the like from the communication infrastructure of the support system road to the traveling vehicle, or may be supplied by an information medium such as a CD-ROM.
Next, when using the lane departure prevention support system (hereinafter referred to as “lane departure prevention”) and the road surface information utilization / inter-vehicle distance maintenance support system (hereinafter referred to as “road surface information / inter-vehicle retention”). The operation of the navigation device 1 will be described as an example.
[0015]
FIG. 2 is a diagram illustrating a schematic configuration example of a main part of the support system road. The road 20 has running lanes 20a and 20b opposite to each other, and lane markers 20c are installed on the running lanes 20a and 20b, for example, at equal intervals on the center line of the running lane.
For example, the vehicles 21a to 21c traveling on the traveling lane 20a can detect the lane marker 20c with the mounted lane marker sensor and calculate the positional relationship between the lane marker 20c and the vehicle. Therefore, when the vehicle 21a is about to depart from the travel lane 20a, the device corresponding to the lane departure prevention on the vehicle 21a side can issue an alarm to the driver.
[0016]
Further, each lane marker 20c can recognize a vehicle passing over each lane marker 20c, and the roadside processing device 22 can calculate the inter-vehicle distance of each vehicle traveling in the traveling lanes 20a and 20b. Therefore, the roadside processing device 22 can issue an inter-vehicle distance alarm to each vehicle. This alarm is transmitted by radio waves from the road-to-vehicle communication device 23, for example, and the navigation device 1 of the vehicles 21a to 21c has. Received by the communication unit 9, the navigation device 1 can issue the alarm to the driver.
[0017]
Incidentally, the road surface condition grasping sensor 24 detects, for example, freezing on the road surface and road surface wetness. The information on the road surface condition grasped in this way is transmitted by radio waves from the road-to-vehicle communication device 23 via the road-side processing device 22, and the navigation device 1 that receives the radio waves by the communication unit 9 may send the information to the driver. It becomes possible.
The radio wave transmitted by the road-to-vehicle communication device 23 also includes information indicating the type of driving support system that the road 20 corresponds to. Accordingly, the driver of the vehicle traveling on the road 20 can know the type of driving support system that the road 20 has.
[0018]
For example, a driver who tries to reach a destination by using two types of driving support systems of lane departure prevention and road surface information / inter-vehicle distance maintenance is the operation switch SW11a of the vehicle side device corresponding to lane departure prevention shown in FIG. Then, the operation switch SW11d of the vehicle side device corresponding to the road surface information / inter-vehicle holding is turned on.
In this case, the driver will prevent a collision at the intersection, such as a collision prevention support system (hereinafter referred to as “intersection collision prevention”) and information on pedestrians crossing the pedestrian crossing. The operation switches SW11b and SW11c of the vehicle side device corresponding to the support system (hereinafter referred to as “pedestrian collision prevention”) are not turned on.
[0019]
The operation detection means 4 detects that the switches SW11a and SW11d are turned on while the switches SW11b and SW11c are not turned on, and transmits this operation information to the control unit 10.
Here, the flowchart shown in FIG. 3 is a processing routine of the control unit 10 that controls the operation of the navigation device 1. The processing routine of the control unit 10 is started from step 30, and the control unit 10 determines whether or not the lane departure prevention operation switch SW11a is turned on in step 31. When the switch SW11a is turned on as described above, the control unit 10 proceeds to step 32 and memorizes that the lane departure prevention operation switch SW11a is turned on.
[0020]
Next, the control unit 10 proceeds to step 33 to determine the operation of the operation switch for preventing the collision at the intersection. However, for the intersection collision prevention, since the switch SW11b is not turned on as described above, the control unit 10 does not proceed to step 34 for storing the fact that the intersection collision prevention operation switch SW11b is turned on, but proceeds to step 35. Proceed to
[0021]
The control part 10 which advanced to step 35 judges the action | operation of the action | operation switch of pedestrian collision prevention. However, also for prevention of pedestrian collision, since the switch SW11c is not turned on as described above, the control unit 10 does not proceed to step 36 for storing that the operation switch SW11c for preventing pedestrian collision is turned on. Proceed to step 37.
[0022]
The control unit 10 that has proceeded to step 37 determines whether or not the operation switch SW11d for maintaining road surface information and keeping the distance between vehicles is turned on. As described above, when the switch SW11d is turned on, the control unit 10 proceeds to step 38 and memorizes that the operation switch SW11d for maintaining the road surface information / inter-vehicle distance is turned on.
As described above, the control unit 10 that has captured the operation information of the operation switches SW11a to SW11d of the vehicle side device proceeds to step 39 and determines whether or not the vehicle side device corresponding to any of the support systems is turned on. And select the next processing step.
[0023]
As described above, when the lane departure prevention and the road surface information / inter-vehicle holding are on, the control unit 10 proceeds to step 42 and determines whether or not the navigation device 1 is guiding the route to the destination. To do.
When the control unit 10 that has proceeded to step 42 determines that the navigation device 1 is performing route guidance, the control unit 10 proceeds to step 43. The control unit 10 that has proceeded to step 43 displays information on the support system road on the screen of the monitor 5 (details of step 43 will be described later). When it is determined in step 42 that the control unit 10 is not in route guidance, the control unit 10 ends the processing routine (step 44) and repeats the processing from step 30 again.
[0024]
When the vehicle-side device corresponding to any of the support systems is not turned on in step 39 described above, the control unit 10 proceeds to step 40 and performs the normal display processing operation of the navigation device 1 by a processing routine described later. I do.
Next, detailed processing steps of step 43 will be described. FIG. 4 is a flowchart showing the process of step 43.
[0025]
The control unit 10 can associate information related to the support system road with the route guidance information to the destination. Therefore, the control unit 10 of the navigation device 1 can determine whether the vehicle is traveling on the support system road by measuring the current position of the vehicle in step 43a and comparing it with the position information of the support system road. it can.
[0026]
Here, when the vehicle is not traveling on the support system road, the control unit 10 proceeds from step 43a to step 43b to the destination via the road corresponding to the support system for preventing lane departure and road surface information / inter-vehicle retention. Displays the route of the priority. Such route guidance processing is performed by the route guidance means 6 connected to the control unit 10 and the processed route guidance information is transmitted to the control unit 10.
[0027]
An image 50 in FIG. 5A is an image displayed on the screen of the monitor 5 when the navigation device 1 is guiding the route to the destination based on the map information in the map information storage means 2. It is an example. In the image 50, a vehicle marker 21 indicating a vehicle traveling on the road 51 is displayed.
At this time, if the driver turns on the switches SW11a and SW11d to use the two types of support systems for preventing lane departure and maintaining road surface information / inter-vehicle distance as described above, the two types of support systems are used. Thus, information on the road 52, which is the shortest route for arriving at the destination, is displayed on the monitor 5 as an image 50a as shown in FIG. In the image 50a, a road 53 that is the shortest route to the road 52 is also displayed. Since the road information storage means 3 has the support system road information, the fact that the driver can use the lane departure prevention and road surface information / inter-vehicle holding support system that the driver wants to use on the road 52 is displayed on the lower portions 55 and 58 of the screen 5. Characters are displayed.
[0028]
Here, the navigation device 1 displays the road 52 in a luminance or color different from that of other road displays, or thickens or blinks the display line of the road 52 to distinguish it from other road information. To display. Further, a character display indicating that the road 52 is a support system road, for example, character information such as “support system road”, characters of the support systems “lane departure prevention” and “road surface information / inter-vehicle retention” supported by the road 52. The display may be displayed on the road 52 or the like.
[0029]
The arrow 54 is used to guide the direction of the driver's destination. In FIG. 5B, the road 52 is indicated by hatching and the road 53 is indicated by horizontal hatching.
Thus, the driver can obtain information for arriving at the destination via the support system road from the visual information displayed on the monitor 5.
[0030]
In the case described above, the driver has not turned on the switches SW11b and SW11c for use in preventing intersection collision and preventing pedestrian collision. When an intersection collision prevention and pedestrian collision prevention support system is available on the road 52, the control unit 10 uses the road information on the road 52 included in the road information storage unit 3 to display the images 50 a on the lower screens 56 and 57. Character display of “intersection collision prevention” and “pedestrian collision prevention” can also be performed. In this case, the character display of “lane departure prevention” and “road surface information / inter-vehicle retention” and the character display of “intersection collision prevention” and “pedestrian collision prevention” are distinguished by changing the color or “intersection collision prevention”. Is replaced with “Intersection collision prevention available”.
[0031]
Next, a description will be given of a case where the control unit 10 determines that the vehicle is traveling on the support system road 52 in step 43a.
In this case, the control unit 10 proceeds from step 43a to step 43c. In step 43c, as shown in the image 50b shown in FIG. 6, the navigation device 1 displays a route guidance to the destination via the road 52, and the driver turns on the lane departure prevention and the switch SW11a, SW11d. A display indicating that the road surface information and inter-vehicle holding is in operation is performed. In this display, as shown in FIG. 6, a character display of “actuation” may be added below “lane departure prevention” displayed at the lower portion 55 of the screen, or “lane departure prevention” display may be added. May blink or change color. The character display of “operation” additionally displayed may be blinked.
[0032]
Next, the control unit 10 proceeds to step 43d, and the navigation apparatus 1 further displays a support system corresponding to the road 52 on which the vehicle is traveling. For example, in the case where the road 52 further supports prevention of intersection collision and pedestrian collision, navigation is performed to indicate that the driver can use the assistance of these assistance systems as shown in an image 50c in FIG. The device 1 displays characters “intersection collision prevention” and “pedestrian collision prevention” on the lower screens 56 and 57 displaying the image 50c. At this time, for example, these two types of support systems can be used, but in order to indicate that the operation of the vehicle side device corresponding to these support systems has not been turned on, for example, a character display of “OFF” is added. Are preferably displayed.
[0033]
Then, the control unit 10 that has completed the above steps 43a to 43d proceeds to step 44 described above, and the control unit 10 ends the processing routine and repeats the processing from step 30 again.
As described above, if no vehicle-side device corresponding to the support system is turned on in step 39, the control unit 10 proceeds to step 40, and if the navigation device 1 is in route guidance, the step is performed. 41, the normal display of the navigation device 1 (signals from GPS satellites are received and the map information around the current position of the map information storage means 2 is read out and displayed, and the vehicle current is displayed on the displayed map. Display to indicate the position and direction of travel). On the other hand, when the navigation device 1 is not in route guidance, the control unit 10 proceeds to step 44 without performing normal display of the navigation device 1, ends the processing routine, and repeats the processing from step 30 again.
[0034]
The processing routine of the control unit 10 is not limited to that shown in FIGS. 3 and 4 and can be modified without departing from the spirit of the processing routine. Moreover, the display of the information regarding the support system road in the images 50a to 50c is not limited to the above-described information. For example, characters such as “lane departure prevention” may be displayed as an icon. The display indicating a certain road 52 may be displayed by overlapping broken lines and chain lines in addition to chromatic display such as luminance and color.
[0035]
As described above, the present invention is not limited to the above-described embodiment, and can be modified and implemented without departing from the spirit of the present invention.
[0036]
【The invention's effect】
As described above, according to the navigation device of the first aspect of the present invention, when the driver operates the vehicle side device, the current position information of the vehicle on the map and the road information of the support system road are associated with each other. In addition, the road information of the support system road is displayed on the monitor screen so as to be distinguished from other road information.
[0037]
Therefore, the driver can easily visually recognize the road information of the support system road together with the current position information.
In the navigation device according to claim 2, route information for preferentially guiding a road corresponding to the support system used by the driver is displayed on the monitor screen. Therefore, if the driver drives the vehicle according to the route guidance, the route information is used. The effect that the destination can be reached via the road corresponding to the support system to be performed is exhibited.
[0038]
According to the navigation device of the third aspect, the driver can know the road information of the road corresponding to the driving support system he wants to use, the current position of the vehicle, etc., and drive the vehicle according to the route guidance on the monitor screen. If it does so, the effect that it can go to the destination easily via the road corresponding to the driving assistance system to use is exhibited.
[0039]
According to the navigation device of the fourth aspect, since the driver displays a plurality of types of driving support systems that can be used on the support system road on the monitor screen, the driver can arbitrarily select and use the driving support system to be used. The effect of is demonstrated.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a main part of a navigation device according to the present invention.
FIG. 2 is a diagram illustrating a schematic configuration example of a main part of a support system road.
FIG. 3 is an operation flowchart of a control unit that controls the operation of the navigation apparatus.
FIG. 4 is a flowchart showing a display procedure for providing information related to a support system road;
FIG. 5 is a diagram showing an example of a normal route guidance screen displayed on the monitor by the navigation device and an example of a route display for guiding the vehicle to the support system road.
FIG. 6 is a diagram illustrating an example of a screen on which a navigation system for a vehicle traveling on a support system road displays on the monitor the support system operating with the support system road.
FIG. 7 is a diagram illustrating an example of a screen on which a navigation system for a vehicle traveling on a support system road displays the support system operating with the support system road and available support systems on a monitor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Map information storage means 3 Road information storage means (Road information storage means corresponding to driving support system)
4 operation detection means (driving support system operation detection means)
5 Monitor (display means)
6 route guidance means

Claims (4)

Map information storage means for storing map information;
Driving support system compatible road information storage means for storing information of roads that can be used by the driving support system;
Driving support system operation detecting means for detecting the operation of the driving support system;
A navigation device, comprising: a display unit that distinguishes road information that can be used by the driving support system from other road information when detecting the operation of the driving support system. The navigation device according to claim 1, wherein
Furthermore, it has route guidance means for guiding and displaying the route to the destination,
The route guidance means prioritizes and displays roads that can be used by the driving support system during operation of the driving support system. There are multiple types of driving support systems,
The navigation device according to claim 1 or 2, wherein the display on the display means is performed according to a type of a driving support system that is operating. The navigation device according to any one of claims 1 to 3, wherein the type of the driving support system that can be used on the road supporting the driving support system is displayed.

Images