JPH1049796A - Cross-point display controller and traveling guiding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily recognize at which cross-point a vehicle turns right or left. SOLUTION: A passage side device 10 arranged at a cross-point recognizes the passage of approaching vehicles 20 and 30 by obtaining the passage from the vehicle 30, obtaining a destination from the vehicle 20, and providing the passage. Then, when the vehicles 20 and 30 turn right or left, passage side display devices 16 and 18 arranged at the cross-point are turned on and off. A sound message for turning right or left at the cross-point at which the display is turned on and off is generated from speakers 26 and 36 to the vehicles 20 and 30 so that the cross-point can be easily guided to a driver.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an intersection,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intersection display control device and a travel guidance device that provide a display for assisting guidance of a traveling direction of a vehicle.

[0002]

2. Description of the Related Art Hitherto, a navigation device for guiding a route of a vehicle is known, and vehicles equipped with the navigation device are increasing. In this navigation device, by setting a destination, an optimal route to the destination is searched for, and when the vehicle travels with the route set,
Guidance is provided by display on the display or by voice so that the vehicle can travel along the route.

[0003] In particular, since route guidance is usually performed during driving by a driver, guidance by voice message is preferable. For example, in the navigation device described in Japanese Patent Application Laid-Open No. Hei 6-52493, when approaching a guidance intersection where a right or left turn or the like is made, a voice guidance message such as "the next intersection is to the right" is output. Therefore, the driver can know that he / she is turning right at the guidance intersection while gazing forward. Therefore, traveling along the route can be easily performed.

[0004]

However, intersections do not always exist at a sufficient distance, and a plurality of intersections may exist in close proximity. For this reason,
In some cases, it is difficult to know which intersection the "next intersection" points to. It is conceivable to refer to the name of a building or the like that serves as a landmark to identify an intersection, but an easy-to-understand landmark does not always exist. In addition, complicated guidance may make it difficult to understand. Furthermore, since the shape of the intersection can be shown on the display, it is relatively easy to know which intersection is the guidance intersection. However, when approaching the intersection, there is often no time to gaze at the display. In particular, in places where intersections are continuous, it is often difficult to gaze at the display.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an intersection display control device and a traveling direction guidance device capable of making a guidance intersection easy to understand.

[0006]

An intersection display control device according to the present invention is installed at a road intersection and displays display means for displaying guidance, and plans to recognize a planned traveling route of a vehicle approaching the road intersection. When it is determined from the route recognition means and the recognized planned route that the road intersection is a guidance intersection requiring guidance for the approaching vehicle,
Display control means for controlling the guidance display of the display means.

As described above, according to the intersection display control device according to the present invention, the planned route of the vehicle is recognized, and when it is determined that the vehicle is at an intersection requiring guidance (a guidance intersection), guidance is displayed. I do. Therefore, the driver of the vehicle
By looking at the display of the intersection, it is possible to recognize the intersection that must be turned right and left. Therefore, even when a plurality of intersections are present close to each other, the guidance intersection can be recognized by looking at the guidance display. The display at the intersection is in the driver's field of view, easy to recognize, and provides a very effective guidance.

[0008] The present invention also provides a plurality of display means installed at each intersection on a road network for displaying guidance.
Planned route recognition means for recognizing a planned traveling route of a vehicle traveling on a road network, based on the planned route,
Display control intersection selecting means for selecting a guidance intersection at which the display means should output a guidance display for the vehicle,
And when the vehicle approaches the guidance intersection selected by the selection means, a guidance display is output to the display means.

At a local traffic control center, a system for collecting information obtained from a plurality of roadside devices and performing traffic control has been proposed. In this system, receiving a destination from a vehicle also provides information on an optimal route in consideration of traffic congestion and the like. Also, if information on a route is acquired from a vehicle, it is possible to predict a traffic amount on a road network.

In such a system, the control center can recognize the route of each vehicle. Therefore, it is possible to know the guidance intersection where each vehicle turns right and left. By notifying the information about the guidance intersection to the roadside device, the guidance display can be performed when the vehicle approaches the intersection where the roadside device is arranged.

[0011] In addition, the traveling guide device according to the present invention includes a remote means for remotely operating a display means installed at a road intersection, and a guide output by the display means after the remote means outputs a guidance output by the display means. Voice guidance means for outputting voice guidance for vehicle travel based on the operation.

As described above, by controlling the display of guidance for the roadside device and performing voice guidance based on the display operation after the display, the driver can easily recognize the guidance intersection.

For example, by blinking the display and outputting a voice message such as "The intersection where the display is blinking is to the left." The driver can easily recognize which intersection the guidance intersection is. it can. In addition, by outputting a sound such as "beep beep" in synchronization with the blinking,
Recognition can be made easier.

Further, the present invention is characterized in that a plurality of guidance display patterns of the display means are set, and a plurality of vehicles approaching an intersection are guided in different traveling patterns in a different display pattern. .

By making the blinking pattern, display color, mark shape, and the like different and giving separate instructions to each vehicle, suitable instructions can be given to a plurality of vehicles.

The planned route is not necessarily limited to turning right and left, and it is also preferable to give an instruction to temporarily stop, including prediction of approach to an intersection by approaching a vehicle.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention (hereinafter, referred to as embodiments) will be described below with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of the system. First, the roadside device 10 is installed at each intersection on the road network. The roadside devices 10 each have a beacon / vehicle detector 12. The beacon / vehicle detector 12 is, for example, an optical type, and constantly emits a predetermined optical signal (carrier signal) toward a predetermined range on a road. The vehicle that has entered the predetermined range detects the carrier signal and transmits a signal corresponding to the carrier signal. Therefore,
The beacon / vehicle detector 12 receives an optical signal from the vehicle and detects entry of the vehicle. Then, optical communication is performed with the vehicle to exchange predetermined information. Note that radio wave communication may be employed instead of optical communication. Further, a vehicle detector by various means may be separately provided, and communication may be started when entry of the vehicle into the communication area is detected.

A roadside control unit 14 is connected to the beacon / vehicle detector 12, and roadside display devices 16 and 18 are connected to the roadside control unit 14. Roadside control unit 1
4 controls the communication in the beacon / vehicle detector 12, and in accordance with the result of this communication, the roadside display devices 16, 1
8 is controlled.

On the other hand, the vehicle 20 includes a beacon transceiver 2
2 are provided. The beacon transceiver 22 communicates with the roadside beacon vehicle detector 12. A voice synthesizer 24 is connected to the beacon transceiver 22, and generates a voice message according to the communication result from the beacon transceiver 22. A speaker 26 is connected to the voice synthesizer 24, and the voice synthesized by the voice synthesizer 24 is output from the speaker 26.

The vehicle 30 is provided with a beacon transceiver 32, a voice synthesizer 34, and a speaker 36. These are the same as the beacon transceiver 22, the voice synthesizer 24, and the speaker 26 in the first vehicle 20. Also,
The second vehicle 30 is provided with a navigation device 38 and a brake control unit 40. Then, the beacon transceiver 32, the voice synthesizer 34, the brake control unit 40
Are all connected to the navigation device 38.

The navigation device 38 also has a GPS device and the like, and keeps track of the current location. Further, based on the map data in the map database, a search for an optimal route to the destination is performed. Then, in the traveling in which the route to the destination is set, voice guidance is provided at the guidance intersection where the vehicle turns right and left. Although not shown, it also has a display, which displays a current position on a map, displays a route, and displays a route at a guidance intersection by enlarging the intersection.

The brake control unit 40 controls the driving of the brake in accordance with an instruction from the navigation device 38.

Further, the roadside device 1 provided at each intersection
0 are all connected to the control center 50. The traffic control center 50 performs traffic control of the entire road network in a predetermined area, and performs not only the operation control of each roadside device 10 but also a predetermined route search and provision of traffic congestion information.

"Control of temporary stop" FIG.
Is shown. First, beacon / vehicle detector 1
2 to determine whether the vehicle has been detected (S1).
1). The beacon / vehicle detector 12 is located 30 before the intersection.
It is good to set it to about m. When the vehicle is detected, the first roadside display device 16 provided on the stop sign is turned on in a predetermined (constant for t seconds) pattern (S12).

Here, the indicator light (the roadside display device 16 or 18) provided on the sign is preferably composed of a plurality of lights surrounding the stop sign as shown in FIG. 3A, for example. is there. Then, the light blinks in a certain pattern. In addition, the roadside display device 16 (1
8) may be provided with a light above the sign as shown in FIGS. 3B and 3C, or may be embedded in the vicinity of the stop line.

For example, in the case of the intersection arrangement as shown in FIG. 4, when the vehicle A attempts to enter the intersection, this is detected by the beacon / vehicle detector 12 of the roadside device 10. Then, in response to this detection, the roadside display device 1
6 is turned on and off.

FIG. 5 shows the operation of the vehicle 20. First, it is determined whether the beacon transceiver 22 has received a signal (a constantly transmitted carrier signal) from the beacon / vehicle detector 12 of the roadside apparatus 10 (S).
21). If a carrier signal has been received, predetermined communication is performed, and it is determined whether stop information is temporarily included in the received information (S22). Here, S21 and S
In the case of NO at 22, the process returns to S21 and repeats the determination.

If stop information is included once, it is necessary to stop once at the next intersection, and a message is output. In this example, a sound such as "Pippi-pi-pi is stopped temporarily." Then, the sound of “beep beep” is synchronized with the blinking of the roadside display device 16 in the roadside device 10.

For example, as shown in FIG. 6, the speaker 2 in the vehicle starts t ₀ seconds after the start of communication based on vehicle detection.
6 and the lighting of the roadside display device 16 are performed in synchronization. Note that, in this example, when the vehicle 20 outputs the sound "This is a temporary stop.", The output of the sound "pip-pip" is reduced and continued. When there are a plurality of speakers 26, it is preferable to divide the output.

As described above, the display is synchronized with the sound, so that the driver can easily recognize the display and give a suitable alert.

Next, it is determined whether the brake is operated or the speed is less than 5 km / h (S24). The brake operation is determined from the state of a brake switch (not shown), and the speed is determined from the state of a speed sensor (not shown). If the answer is NO in S24, a voice message of "temporary stop" is output from the speaker 26 (S25).

Then, it is determined whether the distance 1 to the intersection is l> 0 (S26). If YES, the process returns to S24 and the operation is repeated. For this reason, the audio output of "temporarily stopped" is repeated until the vehicle decelerates. On the other hand, if NO in S26, since the vehicle has already entered the intersection, a message "The current intersection is temporarily stopped. Please be careful later" is output (S27). In S24, Y
When the output of the ES or S27 is completed, the process ends. In the case of YES in S24, the process is terminated because the deceleration operation has already been started.

Next, when brake control is performed (vehicle 30
In the case of having the brake control unit 40 as in (1), the processing shown in FIG. 7 may be performed instead of S24 and S25 described above. First, it is determined whether the distance 1 to the intersection is a stoppable distance (S31). That is, it is determined whether l <(1/2) vx ² / G. Here, vx is the current vehicle speed, and G is the maximum deceleration by the brake control.

If the determination in S31 is YES, a voice message "Decelerate." Is output, and the brake control unit 40 is controlled to decelerate (S3).
2). In this way, the suspension can be performed temporarily.

Here, the vehicle 20 (3
The information to be provided in (0) includes (i) the content of the electronic sign such as a temporary stop or a slowdown, (ii) information about a display timing, (iii) information about a display interval, and (iv) information on an intersecting road. The presence or absence of a vehicle, the estimated time at which the vehicle enters an intersection, and the like are considered. With such information, a necessary brake operation or various warnings can be issued in the vehicle 20 (30).

As shown in FIG. 4, when the vehicle B approaches the main road at the intersection, the vehicle B does not have to stop temporarily, but the vehicle A comes on the subordinate road. Should be careful. Therefore, in this case, it is also preferable to blink the second roadside display device 18 to call attention.

[Control of Route Guidance] Next, when the navigation device 38 is mounted like the vehicle 30,
A route to the destination may be set. In this case, the route guidance can be more effectively performed using the roadside display device 16.

For example, as shown in FIG. 8, it is assumed that the intersections are continuous and the roadside display devices 16 are respectively installed here. Then, the roadside display device 1 whose route is the earliest
Assume that intersection 6 was a right turn. The processing in this case will be described.

FIG. 9 shows the processing in the roadside device 10. First, in the beacon / vehicle detector 12, the vehicle 3
It is determined whether 0 has been detected (S41). If both are detected, both parties communicate with each other (S42). Vehicle 30
Transmits the set route to the roadside device 10 in the navigation device 38. The road-side controller 14 of the road-side device 10 determines whether the intersection is a guidance intersection for the vehicle 30 based on the received route (S43).
When intersections are continuous and one roadside device 10 is provided for a plurality of intersections, it is also recognized which intersection is the guidance intersection.

If it is a guidance intersection, the roadside display device 16 at that intersection is blinked (S4).
4). This facilitates recognition of the guidance intersection.

Next, FIG. 10 shows the processing in the vehicle 20. First, the beacon transceiver 32 determines whether a signal from the roadside device 10 has been received (S51). If received, information about the route or the destination is provided to the roadside device (S52). Then, it is determined whether or not the display at the guidance intersection is performed according to the content of the communication (S53). Then, when a display is performed at the guidance intersection, voice guidance based on the display is performed (S5).
4). For example, if a predetermined pattern of light blinking as described above is performed on a sign, in synchronization with this blinking,
After the sound "pip-pip" is emitted, a message "The intersection at which the indicator light is blinking is to the right is output" is output from the speaker 36.

As described above, the predetermined indicator is provided at the intersection, and the guidance intersection is displayed to that effect.
Therefore, the driver can clearly recognize the guidance intersection based on the display without looking at the display or the like. In particular, if the sound of “pip-pip” is synchronized with the blinking of the display, the recognition becomes easier. Therefore, even when a plurality of intersections are located close to each other and it is difficult to determine which intersection is the guidance intersection, the guidance intersection is easily recognized by the display when the user is about to enter the intersection. it can.

It is also preferable that the display is made different at successive intersections, and that the display content is specified in the vehicle to provide guidance. in this case,
The vehicle 30 obtains information such as the blinking pattern, color, and mark of the display at the guidance intersection from the roadside device 10 and outputs the content as a sound.

For example, different blinking patterns are used to determine which display the audio output is synchronized with, or display colors such as yellow, orange, and pink are made different, and a specific color is specified for guidance. It is also conceivable to output a guidance such as "The intersection of the mark A is to the left."

As described above, by making the display different at each intersection, when a plurality of vehicles are traveling at the same time or close to each other, clear guidance can be given to each vehicle.

Further, in the above-described example, the navigation device 38 mounted on the vehicle 30 performs a route search, communicates the obtained route by a beacon, and the roadside device 10 determines the roadside display device 16 to be displayed. did. However, there is also a system in which a route search is performed in the control center 50. That is, the vehicle 20 (30) sends the destination to the control center 50 via the roadside device 10. The traffic control center 50 provides the optimum route to the vehicle 20 (30) in consideration of traffic jam information and traffic regulation information that the traffic control center 50 has grasped. Thereby, the control center 50 grasps the guidance intersection where the vehicle 20 (30) turns left or right. Therefore, a signal is sent to the corresponding roadside device 10 to give an instruction to perform display when the vehicle 20 (30) approaches. Roadside device 1
0 indicates guidance display such as blinking in a predetermined pattern at a predetermined timing when the corresponding vehicle 20 (30) approaches by communication with the vehicle 20 (30). Thus, suitable guidance can be provided to a plurality of vehicles traveling on the road network. Further, according to this system, a map database or the like is not required on the vehicle side, and the vehicle 20 can easily travel along the route.

Further, in the above example, only the display at the time of passing through an intersection on a road has been described, but the present invention can be applied to other places. For example, a vehicle entering the parking lot
When it is recognized that the vehicle is a large vehicle, it is also preferable that the vehicle be guided to a parking space for the large vehicle by blinking a display.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration.

FIG. 2 is a flowchart showing an operation in the roadside device.

FIG. 3 is a diagram illustrating a form of a roadside display device.

FIG. 4 is a diagram showing a configuration of an intersection.

FIG. 5 is a flowchart showing an operation in the vehicle.

FIG. 6 is a diagram showing guidance output patterns on the vehicle side and the road side.

FIG. 7 is a flowchart showing an operation of brake control.

FIG. 8 is a diagram showing a configuration of an intersection.

FIG. 9 is a flowchart illustrating an operation of the roadside device.

FIG. 10 is a flowchart showing an operation in the vehicle.

[Explanation of symbols]

10 Roadside device, 12 Beacon / vehicle detector, 14
Roadside control device, 16, 18 Roadside display device, 20, 30
Vehicle, 22, 32 Beacon transceiver, 24, 34
Voice synthesizer, 26, 36 speaker, 38 navigation device, 40 brake control unit.

Claims (8)

[Claims] 1. A display means installed at a road intersection for displaying guidance, a planned route recognizing means for recognizing a planned traveling route of a vehicle approaching the road intersection; However, if it is determined that the vehicle is approaching a guidance intersection that requires guidance, the display control means controls the guidance display of the display means. 2. A plurality of display means installed at each intersection on a road network for providing guidance display, a planned route recognition means for recognizing a planned travel route of a vehicle traveling on the road network, and based on the planned route. And display control intersection selecting means for selecting a guidance intersection at which the display means should output a guidance display for the vehicle.When the vehicle approaches the guidance intersection selected by the selection means, An intersection display control device, wherein the display means outputs a guidance display. 3. The intersection display control device according to claim 1, wherein the scheduled route recognition unit includes a communication unit that communicates with a vehicle. 4. The apparatus according to claim 3, wherein the planned route recognizing means uses destination information input by a navigation system mounted on the vehicle or route information searched for by using the communication means. An intersection display control device, which is acquired. 5. A remote means for remotely operating a display means installed at a road intersection, and after a guidance output by the display means is made by the remote means, the vehicle travels based on the operation of the display means. A driving guidance device, comprising: voice guidance means for outputting guidance by voice. 6. The travel guidance device according to claim 5, wherein the guidance output by the voice guidance means is guidance regarding a vehicle traveling direction at the intersection. 7. The apparatus according to claim 6, further comprising: selecting means for selecting a guidance intersection from a planned route of the vehicle; and remote operation control means for operating the remote means when the vehicle approaches the guidance intersection. A travel guidance device further provided. 8. The apparatus according to claim 1, wherein a plurality of guidance display patterns of said display means are set,
An intersection display control device or a travel guidance device, which provides a traveling direction guide for a plurality of vehicles entering an intersection in different display patterns.