JP2017167623A - Information display device, information display method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display device that can reduce a possibility of a traffic accident caused by a reduction in driver's attention and illusion.SOLUTION: An information display device displays movement support information including attention information to be apparently overlapped on the front landscape of a movable body, and acquires driving state information on the movable body. The information display device displays the attention information in a mode to prevent a vision drawing effect on a driver of the movable body on the basis of the driving state information.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an information display device mounted on a moving body.

  Devices that are mounted on vehicles and display driving assistance information are known. The driving support device described in Patent Document 1 is a peripheral vehicle that exists in the vicinity of the host vehicle using GPS, VICS (registered trademark), a vehicle-to-vehicle communication device, a road-to-vehicle communication device, a radar, a camera, and the like mounted on the vehicle. Based on the detected state of the surrounding vehicle, the degree of risk that the surrounding vehicle will encounter a traffic accident is predicted by the surrounding vehicle, and the predicted degree of danger is notified to the driver of the own vehicle. ing.

JP 2010-67235 A

  Patent Document 1 merely predicts the degree of risk from information on surrounding vehicles such as a car that performs reckless driving. Therefore, it has not been possible to prevent a traffic accident caused by a driver's reduced attention and an illusion that may occur when the vehicle is traveling alone.

  Examples of the problem to be solved by the present invention include the above. An object of the present invention is to provide an information display device capable of reducing the possibility of a traffic accident due to a driver's attention reduction or illusion.

  The invention according to claim 1 is an information display device, wherein the display control means for displaying the movement support information including the caution information so as to overlap the scenery in front of the moving body, and the driving status information of the moving body. Driving status information acquisition means for acquiring, wherein the display control means displays the caution information in a manner that prevents a visual suction action for a driver of the moving body based on the driving status information. It is characterized by.

  The invention according to claim 12 is an information display method executed by the information display device, the display control step for displaying the movement support information including the caution information so as to overlap the scenery in front of the moving body, and A driving status information acquisition step of acquiring driving status information of the moving body, wherein the display control step is based on the driving status information and prevents a visual suction action on the driver of the moving body. The caution information is displayed.

  The invention according to claim 13 is a program executed by an information display device including a computer, wherein the display control means displays the movement support information including the caution information so as to overlap the front scenery of the moving body, The computer functions as driving status information acquisition means for acquiring driving status information of a moving body, and the display control means prevents a visual suction action for a driver of the moving body based on the driving status information. The attention information is displayed in such a manner.

1 shows a schematic configuration of an information display apparatus according to an embodiment. An example of a caution display is shown. The other example of a caution display is shown. It is a flowchart of the process which performs a caution display. The example of the caution display by a modification is shown. It is a flowchart of the process which performs the caution display by a modification.

  In one preferred embodiment of the present invention, the information display device displays the display control means for displaying the movement support information including the attention information so as to overlap the scenery in front of the moving body, and the driving status information of the moving body. Driving status information acquisition means for acquiring, and the display control means displays the caution information in a manner that prevents a visual suction action for a driver of the mobile body based on the driving status information.

  The information display device displays the movement support information including the caution information so as to overlap the scenery in front of the moving body, and acquires the driving state information of the moving body. And based on driving | running condition information, attention information is displayed in the aspect which prevents a visual attraction effect | action with respect to the driver | operator of the said mobile body. Thereby, possibility that a traffic accident etc. will occur when a driver stares at a specific part can be reduced.

  In one aspect of the information display device, the display control means displays the caution information when a condition that causes a visual suction action to the driver is provided. In this aspect, the possibility of a traffic accident or the like is reduced by preventing the driver from having a visual suction action.

In one aspect of the information display device, the display control means displays the caution information in such a manner that the driver of the moving body does not gaze at an arbitrary location. Thereby, it can prevent that a driver | operator gazes at arbitrary locations during a driving | operation.

  In another aspect of the information display device, the display control means displays a line indicating at least a part of a region that the driver should be aware of during driving as the attention information. In this aspect, the driver's line of sight can be guided to an area to be conscious of during driving, specifically, the entire driving field of view ahead.

  In a preferred example, the display control means displays characters as the attention information. In another preferred example, the display control means blinks the caution information.

  In another aspect of the above information display device, when at least one of the driver's fatigue, drowsiness, and looking away is detected by the driving status information acquisition unit, the display control unit is configured to display the attention information. Blinks to emphasize more. In this aspect, when the driver is tired, drowsy, looking away, etc., the attention information is displayed more emphasized.

  In another aspect of the information display device, the display control means displays the caution information so as not to overlap with movement support information other than the caution information. Thereby, both the caution information and other information can be displayed in an easy-to-see manner.

  In another aspect of the information display device, the display control means displays the caution information so as to overlap a traveling lane in which the moving body is traveling. In this aspect, the driver's line of sight can be guided to the traveling lane of the host vehicle.

  In another aspect of the information display device, when the driving state information acquisition unit detects that a preceding vehicle is present ahead, the display control unit overlaps the preceding vehicle with the attention information. Is displayed. In this aspect, the driver's line of sight can be guided in the vicinity of the preceding vehicle.

  Another aspect of the information display device further includes map information acquisition means for acquiring map information, and the display control means displays attention information based on the map information. In this aspect, caution information can be displayed based on signs, signboards, near-miss data, etc. included in the map information.

  In another preferred embodiment of the present invention, the information display method executed by the information display device includes a display control step of displaying the movement support information including the caution information so as to overlap the scenery in front of the moving body, A driving status information acquisition step of acquiring driving status information of the moving body, wherein the display control step is based on the driving status information and prevents a visual suction action on the driver of the moving body. The attention information is displayed. Thereby, possibility that a traffic accident etc. will occur because a driver stares at a specific part can be reduced.

  In another preferred embodiment of the present invention, a program executed by an information display device including a computer displays display support means for displaying movement support information including caution information so as to overlap the front scenery of the moving body, The computer functions as driving status information acquisition means for acquiring driving status information of a moving body, and the display control means prevents a visual suction action for a driver of the moving body based on the driving status information. The attention information is displayed in such a manner. By executing this program on a computer, the above information display device can be realized. This program can be stored and handled in a storage medium.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
[Device configuration]
FIG. 1 shows a schematic configuration of an information display apparatus according to an embodiment. The information display device 1 is mounted on a moving body such as a vehicle, and includes a vehicle speed detection unit 11, a vehicle surrounding information detection unit 12, a traffic information reception unit 13, a biological information detection unit 14, and display information determination. A unit 15, a map database (hereinafter referred to as “DB”) 16, a travel time DB 17, and a head-up display (hereinafter referred to as “HUD”) 20 are provided.

  The vehicle speed detection part 11 is comprised by a vehicle speed sensor etc., and detects the speed of a vehicle. The vehicle surrounding information detection unit 12 includes a camera, a sensor, a vehicle-to-vehicle communication unit, and the like. A traveling vehicle around the vehicle, a falling object on the road, a surrounding dangerous object (for example, a signboard, a building, etc.), a traveling A lane (white line) or the like on the inside road is detected, and vehicle surrounding information indicating the situation around the vehicle is generated. The traffic information receiving unit 13 includes a communication device with a server that provides traffic information, a VICS communication device, and the like, and receives information stored in the server (for example, near-miss data), VICS traffic accident information, and the like. To do. The biological information detection unit 14 includes a heart rate measuring device, a face image detection device, a line-of-sight detection device, and the like, and detects the biological information of the driver. Specifically, the biological information detection unit 14 detects the state of fatigue / sleepiness from the heartbeat, facial expression, posture, etc. of the driver, or detects the direction of the driver's line of sight using the line-of-sight detection device.

  The map DB 16 stores map data. Note that the map data also includes information such as frequent accident points where a plurality of accidents have occurred in the past. The travel time DB 17 stores a history of past travel times of the vehicle and the current travel time (that is, the current continuous travel time).

  The display information determination unit 15 is configured as a computer including a CPU and can be typically a car navigation device. The display information determination unit 15 determines display information that is information to be displayed to the driver. Specifically, the display information determination unit 15 includes vehicle speed information acquired from the vehicle speed detection unit 11, vehicle peripheral information acquired from the vehicle peripheral information detection unit 12, traffic information acquired from the traffic information reception unit 13, and biological information detection unit. Display information is determined based on the biological information acquired from 14, the map data acquired from the map DB 16, the travel time acquired from the travel time DB 17, and the like, and supplied to the HUD 20.

  The HUD 20 includes a video output unit and an optical system such as a combiner, and projects an image including display information supplied from the display information determination unit 15 onto a combiner or a windshield of the vehicle. The driver visually recognizes a virtual image of the image in front of the vehicle by viewing the image projected on the windshield. During normal traveling, the HUD 20 displays vehicle speed, traveling direction, guidance information for a destination, and the like as driving support information.

  In said structure, the display information determination part 15 is an example of the driving condition information acquisition means and map information acquisition means of this invention, and the display information determination part 15 and HUD20 are examples of the display control means of this invention. Further, the driving status information in the present invention is a concept including the vehicle speed information, vehicle surrounding information, traffic information, biometric information, map data, and travel time.

[Caution]
In this embodiment, in order to prevent an accident from occurring due to the driver's line of sight being concentrated on one point by the visual suction action, the vehicle periphery information and traffic information at the time of traveling, and long-time driving, etc. According to the driver's fatigue / drowsiness state, a display (hereinafter, referred to as “caution display”) for prompting the driver to pay attention is displayed on the HUD 20.

  Here, the visual suction action will be described. Human vision is deeply linked to consciousness, and the line of sight concentrates on things that are stronger and more conscious, such as those that are of interest and those that feel dangerous. This is called “visual suction action”. Visual aspiration is likely to occur due to fatigue or sleepiness. When the visual suction action occurs, it is impossible to keep an eye on the object, and it may cause an accident during driving by moving closer to the staring object. One measure is to keep an eye on the object you are staring at. Therefore, in this embodiment, in a situation where a visual suction action is considered to occur in the driver, a caution display is performed by the HUD 20 so that the driver's eyes are separated from the object to be stared.

  Specifically, first, the display information determination unit 15 determines whether or not the host vehicle is traveling at a certain speed or more based on the vehicle speed information obtained from the vehicle speed detection unit 11. When the host vehicle is traveling at a certain speed or higher, the display information determination unit 15 is based on the driving situation information acquired from the vehicle surrounding information detection unit 12, the traffic information reception unit 13, the biological information detection unit 14, and the like. Then, it is determined whether or not a condition for generating visual suction action exemplified below (hereinafter also referred to as “visual suction action generation condition”) is provided, and it is determined that a condition for generating visual suction action is provided. In such a case, a caution display is performed by the HUD 20.

(1) A large vehicle (such as a truck) is traveling diagonally ahead of the host vehicle, or the lane changes.
(2) When a fallen object is detected on the road on which the vehicle is traveling.
(3) When dangerous objects (signboards, buildings, etc.) are acquired from map data.
(4) When it is determined that the point is a dangerous point based on data (such as a near-miss) stored in the server.
(5) When it is detected from traffic information that the point is a frequent accident point.
(6) When it is detected that the driver's fatigue / drowsiness is rising based on biological information such as a pulse.
(7) When the continuous operation time exceeds a certain time and a decline in attention is predicted.

  As described above, in this embodiment, the driver is visually notified of the possibility that the driver's line of sight is concentrated on one point due to the visual suction action. In addition, even if the driver temporarily stares at something unexpectedly in such a predicted state, it gives a chance to restore the line of sight by displaying a caution within the field of view. be able to. In this way, it is possible to prevent the driver's line of sight from being concentrated on a single point due to the visual suction action, and to reduce the possibility of an accident or the like due to this.

  Next, the warning display will be described. FIG. 2A shows an example of an image displayed on the windshield region 30 of the vehicle by the HUD 20. As shown in FIG. 2 (A), the driver views the scenery in front through the windshield. In the example of FIG. 2A, a lane (white line) 31 that defines the traveling lane and the adjacent lane of the vehicle can be seen in the windshield region 30. Here, an area 34 in which information is displayed by the HUD 20 (hereinafter referred to as “HUD display area”) 34 is indicated by a one-dot chain line. In FIG. 2A, nothing is displayed in the HUD display area 34 for convenience of explanation.

  FIG. 2B shows an example of a caution display. In the HUD display area 34, a display line 35 surrounding a certain area in front of the vehicle is blinked and displayed as an area that the driver should be aware of during driving. The reason why the region of a certain range is displayed by the display line 35 is to prevent the line of sight from being concentrated on one point due to the visual suction action. In addition, the display line 35 is blinked when the driver's line of sight is temporarily off the road ahead, or when attention is reduced, the display line 35 is not affected by the blind spot even at the edge of the field of view. This is to make it easier to recognize. In this way, by displaying the relatively wide area with the display line 35, the driver's viewpoint is guided to the wide area to release the staring at one point, and the driver is released from the visual suction action. Since the ease of recognition by the driver varies depending on the blinking pattern of the display line 35, it is preferable to use a blinking pattern that is easy for the driver to recognize. Moreover, since it is preferable that a driver | operator's eyes | visual_axis exists on the driving | running lane in which the own vehicle is drive | operating during driving | running | working, it is preferable to display the display line 35 in the driving | running lane of the own vehicle. In the example of FIG. 2B, the display line 35 is displayed in the area between the white lines 31 that define the traveling lane in which the vehicle is traveling. In addition, the information display apparatus 1 should just display the display line 35, specifying the position of the driving lane of the own vehicle using map data, lane recognition information, etc.

  FIG. 3A shows another example of a caution display. FIG. 3A shows a display example when the vehicle is traveling on a curve 8 (curve) road, and the display line 35 is displayed between the white lines 31 according to the curved shape of the road.

  FIG. 3B shows still another example of the caution display. Normally, other information such as speed display and traveling direction display (hereinafter referred to as “normal display information”) is displayed in the HUD display area 34. Therefore, when a caution display is performed in addition to the normal display information, as shown in FIG. 3B, the display line 35 is set so as not to hinder the display of the normal display information (in this example, “50 km”). indicate. For example, the normal display information and the caution display line 35 may be displayed in separate layers.

[Display processing]
Next, processing for displaying a warning will be described. FIG. 4 is a flowchart of processing for displaying a warning. This process is repeatedly executed at regular time intervals mainly by the information display apparatus 1 controlling the HUD 20.

  First, the information display apparatus 1 detects the own vehicle speed by the vehicle speed detection part 11 (step S11), and determines whether the vehicle is traveling (step S12). When the vehicle is not traveling (step S12: No), the process proceeds to step S20. On the other hand, when the vehicle is running (step S12: Yes), the information display device 1 detects vehicle surrounding information by the vehicle surrounding information detection unit 12 (step S13). Further, the information display device 1 receives traffic information by the traffic information receiving unit 13 (step S14), detects the biological information by the biological information detection unit 14 (step S15), and acquires map data from the map DB 16 (step S14). S16) The travel time (current continuous travel time) is acquired from the travel time DB 17 (step S17).

  Next, the information display device 1 determines whether or not the above-described visual suction action generation condition is satisfied based on the information acquired in steps S13 to S17 (step S18). When it is determined that the condition for generating the visual suction action is satisfied (step S18: Yes), the information display device 1 controls the HUD 20 to exemplify in FIGS. 2 (A) to 3 (B). Attention is displayed (step S19). On the other hand, when it is determined that the condition for generating the visual suction action is not satisfied (step S18: No), the process proceeds to step S20.

  In step S20, the information display device 1 hides the caution display. Specifically, if the caution display is not performed at that time, it is left as it is. If the caution display is already performed, the caution display is removed. Then, the process ends.

[Modification]
(Modification 1)
In the above embodiment, the display line 35 is blinked as a caution display. However, when the blinking display is used for other meanings or applications depending on the device, as shown in FIG. In addition to the blinking display of the display line 35, display of characters and symbols may be added. In this example, an explanation display 36 of “confirm front / around” is added as a caution display. Thus, the driver can be informed that the blinking display of the display line 35 at that time has the meaning of a caution display.

(Modification 2)
When the information display device 1 can detect the front vehicle and its position by using the front camera information or the like, as shown in the example of FIG. 5B, the front vehicle 33 is emphasized as a caution display. The display line 35 may be displayed. For example, the display line 35 may be displayed so as to overlap the front vehicle 33 or surround the front vehicle 33.

(Modification 3)
In a situation where the information display device 1 detects the direction of the driver's line of sight as biometric information, a condition for generating visual suction is provided, and the driver's line of sight is directed to a road other than the front road for a certain time or more. If it is, the warning display may be changed to a blinking pattern that is easier for the driver to recognize than the normal warning display. The process in this case is shown in FIG. The flowchart in FIG. 6 is the same as the flowchart in FIG. 4 except that steps S18-1 to S18-3 are added, and thus the description of the same steps is omitted.

  In step S18, when it is determined that the condition for generating the visual suction action is satisfied, the information display device 1 determines whether or not the driver's line of sight has deviated from the front of the vehicle for a certain time or more (step S18-1). ). When the driver's line of sight has not deviated from the front of the vehicle for a certain time (step S18-1: No), the information display device 1 sets the blinking pattern of the display line 35 to a normal blinking pattern (step S18-3). . On the other hand, when the driver's line of sight has deviated from the front of the vehicle for a certain time or more (step S18-1: Yes), the information display device 1 can easily recognize the blinking pattern of the display line 35 as compared with the normal blinking pattern. The pattern is set (step S18-2).

  In the example of the flowchart of FIG. 6, in step S18-1, it is determined whether or not the driver's line of sight has deviated from the road ahead for a certain period of time. Instead, based on the biological information, It may be determined whether or not sleepiness has reached a certain value or more.

DESCRIPTION OF SYMBOLS 1 Information display apparatus 11 Vehicle speed detection part 12 Vehicle periphery information detection part 13 Traffic information reception part 14 Biometric information detection part 15 Display information determination part 20 Head-up display

Claims (14)

Display control means for displaying movement support information including attention information so as to overlap the scenery in front of the moving body;
Driving status information acquisition means for acquiring driving status information of the mobile body,
The information display device, wherein the display control means displays the caution information in a manner that prevents a visual suction action for a driver of the moving body based on the driving situation information.   The information display device according to claim 1, wherein the display control unit displays the caution information when a condition that causes a visual suction action to the driver is provided.   The information display device according to claim 1, wherein the display control unit displays the caution information in a manner such that a driver of the moving body does not gaze at an arbitrary place.   The said display control means displays the line which shows at least one part of the area | region which the said driver should be aware during a driving | operation as said caution information, The Claim 1 thru | or 3 characterized by the above-mentioned. Information display device.   The information display apparatus according to claim 4, wherein the display control unit displays a character as the attention information.   The information display device according to claim 1, wherein the display control unit blinks the caution information.   When at least one of the driver's fatigue, drowsiness, and looking away is detected by the driving status information acquisition unit, the display control unit performs a blinking display that emphasizes the attention information more. The information display device according to claim 6.   The information display device according to any one of claims 1 to 7, wherein the display control unit displays the caution information so as not to overlap movement assistance information other than the caution information.   The information display device according to claim 1, wherein the display control unit displays the caution information so as to overlap a traveling lane in which the moving body is traveling.   The display control means displays the caution information so as to overlap the preceding vehicle when the driving condition information obtaining means detects that a preceding vehicle is present ahead. The information display device according to any one of claims 8 to 9. It further comprises a map information acquisition means for acquiring map information,
The information display device according to any one of claims 1 to 10, wherein the display control means displays attention information based on the map information. An information display method executed by an information display device,
A display control process for displaying the movement support information including the attention information so as to overlap the scenery in front of the moving body;
A driving status information acquisition step of acquiring driving status information of the mobile body,
The information display method, wherein the display control step displays the caution information in a manner that prevents a visual suction action for the driver of the moving body based on the driving situation information. A program executed by an information display device including a computer,
Display control means for displaying movement support information including caution information so as to superimpose the scenery in front of the moving object;
Operating the computer as driving status information acquisition means for acquiring driving status information of the moving body,
The said display control means displays the said caution information in the aspect which prevents a visual attraction effect | action with respect to the driver | operator of the said moving body based on the said driving condition information.   A storage medium storing the program according to claim 13.