JP2015108519A - Information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display device capable of performing zooming of a map according to intent of a passenger without giving a load to the passenger.SOLUTION: When an own vehicle is automatically operated, degree of consciousness of a passenger to traveling of the own vehicle is estimated, and as the estimated consciousness to the traveling is high, a scale of map information is expanded, and as the consciousness is low, the scale of the map information is reduced.

Description

  The present invention relates to an information display device.

  As this type of technique, a technique described in Patent Document 1 below is disclosed. This document discloses an apparatus for enlarging or reducing a map displayed on a display device according to the number of times the touch switch of the display device is pressed.

Japanese Patent Laid-Open No. 5-216398

The technique described in Patent Document 1 has a problem that unless the occupant presses the touch switch, the map cannot be enlarged or reduced in accordance with the occupant's intention, which imposes a burden on the occupant.
The present invention has been focused on the above problems, and an object of the present invention is to provide an information display device capable of enlarging and reducing the map according to the occupant's intention without imposing a burden on the occupant. It is.

  In order to solve the above problems, in the present invention, when the host vehicle is automatically driven, the height of the consciousness of the occupant's travel is estimated, and the scale of the map information is increased as the consciousness of the estimated occupant's travel is higher. However, the scale of map information was reduced as the consciousness was lower.

  Therefore, the map information can be enlarged or reduced in accordance with the occupant's intention without imposing a burden on the occupant.

FIG. 2 is a control block diagram of the information display device of Example 1. FIG. 3 is a diagram illustrating an example of an image image according to the first embodiment. 3 is a graph showing contrast sensitivity with respect to a spatial frequency for each time frequency of Example 1. 3 is a graph showing contrast sensitivity with respect to a spatial frequency for each time frequency of Example 1. 3 is a graph showing contrast sensitivity with respect to a spatial frequency for each time frequency of Example 1. 4 is a table showing values of S1, S2, S3, P1, P2, and P3 in the formulas (2) and (3) of Example 1. 6 is a graph showing a visual field range having a contrast sensitivity with a maximum sensitivity of 10 [%] according to a time frequency of Example 1 for each spatial frequency. 4 is a graph showing a result of estimating, for each spatial frequency, a change in an eccentric angle of a visible range with respect to a change in time frequency in Example 1.

Example 1
[overall structure]
FIG. 1 is a control block diagram of the information display device 1. The information display device 1 includes an ambient condition analysis unit 10, an automatic operation control unit 11, a travel consciousness estimation unit 12, a map scope operation unit 13, a map information display control unit 14, a map database 15, and a map information display A generation unit 16, an image generation unit 17, and a display unit 18 are provided.

  The ambient condition analysis unit 10 receives a signal from a camera that captures the surroundings of the host vehicle, an obstacle sensor that transmits a signal around the host vehicle and receives a signal reflected by the obstacle, and a signal from a Global Positioning System (GPS) satellite. The signal from the GPS receiver or the like is analyzed, and the distance and direction between the host vehicle and the obstacle and the speed when the obstacle is moving are obtained. The ambient condition analysis unit 10 analyzes signals for obstacles around the host vehicle.

  The automatic driving control unit 11 automatically operates the host vehicle regardless of the driver's driving operation. The automatic operation control unit 11 sets a route from the current location to the destination, sets a travel plan so that the route set according to the information from the surrounding state analysis unit 10 can be traveled, and automatically follows the travel plan. Run the vehicle. A travel plan is, for example, stopping at a red traffic light intersection, temporarily stopping at a stop intersection, moving the vehicle to the right turn lane to turn right at the next intersection, or overtaking to overtake the preceding vehicle Indicates moving the vehicle to the lane.

  The travel consciousness estimation unit 12 estimates the height of the consciousness of the occupant during automatic driving. For example, when the occupant is operating a steering wheel, an accelerator pedal, or a brake pedal, the travel consciousness estimation unit 12 is estimated to have the highest consciousness about the occupant's travel. Conversely, when the occupant is not touching the steering wheel, the accelerator pedal, or the brake pedal, it is estimated that the occupant is most aware of traveling.

  The travel consciousness estimation unit 12 may capture the occupant with a camera, analyze the captured image, and estimate the height of the occupant's consciousness about travel. For example, if it can be analyzed from image analysis that the occupant is looking away or dozing, it is estimated that the occupant is less conscious of traveling. On the other hand, if it can be analyzed from the image analysis that the occupant is looking directly ahead, it is estimated that the occupant is highly conscious of traveling.

  Even when the occupant is operating the steering wheel, the accelerator pedal, and the brake pedal, when the navigation system or audio is operated, correction is performed so that the consciousness of the occupant is reduced. Even when the occupant is not touching the steering wheel, accelerator pedal, or brake pedal, when a driving plan for changing lanes is input to the automatic operation control unit 11, the occupant is highly aware of driving. Correct so that the height increases.

  The map scope operation unit 13 is configured to change the scale of the map information displayed on the display unit 18 to a passenger's preferred scale by operating the map scope operation unit 13. The map scope operation unit 13 is configured by a touch panel, a joystick, a keyboard, or the like mounted on the display unit 18.

  The map information display control unit 14 determines the viewpoint or field of view of the map information displayed on the display unit 18 according to the level of occupant's awareness of driving estimated by the driving awareness estimation unit 12 or the operation amount of the map scope operation unit 13. Set the corner. A table of viewpoint position and viewing angle data in 3D graphics space that determines the map information to be output to the image generator 17 is prepared in advance, and the field of view set from the set viewpoint based on the data of the appropriate position of the table The image when the ground surface is seen at the corner is output to the image generation unit 17.

  Specifically, when it is estimated that the consciousness of the occupant is high, the scale of the map information is set to be enlarged. When it is estimated that the occupant's driving awareness is low, the scale of the map information is set to be reduced. Further, when the occupant operates the map scope operation unit 13 to increase the scale of the map information, the map information is set to be expanded. When the map scope operation unit 13 is operated by an occupant to reduce the scale of the map information, the map information is set to be reduced. The change of the scale of the map information is continuously changed and displayed by a smooth line. Note that the setting of the viewpoint and the viewing angle of the map information is performed with priority given to the operation amount of the map scope operation unit 13 over the height of the occupant's driving awareness estimated by the driving awareness estimation unit 12.

  The map database 15 is mounted on a navigation system or the like, and has information on road conditions and surrounding roads (such as restaurants). The map database 15 does not need to be mounted in the host vehicle, and may be one that can obtain information from the outside by communication.

  Based on the current location, destination, and route information obtained from the automatic operation control unit 11, the map information display generation unit 16 acquires map information including the current location and the destination and surrounding information of the route, and 3D It is placed on the ground surface provided in the graphics space. The image generated by the map information display generation unit 16 has a resolution that can be displayed by a smooth line on the display unit 18 when the scale of the map is most enlarged.

  In addition, the map information display generation unit 16 draws a host vehicle image indicating the host vehicle at the current location on the map, and draws an annular visual pattern surrounding the host vehicle image. The visual pattern notifies the occupant of the direction in which there are obstacles or conditions to be alerted by changing the brightness, color, thickness, etc. of the display in that direction. This visual pattern is displayed regardless of the level of consciousness of the occupant traveling.

Further, the map information display generation unit 16 draws the vehicle speed information of the own vehicle at a position away from the map. This speed information is displayed regardless of whether the occupant is conscious of traveling.
In addition, when the automatic driving control unit 11 fails, the map information display generation unit 16 draws an image or a character informing the automatic driving control unit 11 of the failure. This information is displayed regardless of whether the occupant is conscious of traveling.

  In addition, the map information display generation unit 16 draws a button for obtaining detailed information of the facility at the route selected by the automatic operation control unit 11 and various facilities such as a gas station and a restaurant around the route. To do. Furthermore, a button for obtaining detailed information on the facility is drawn at the location of the various facilities in the vicinity of the destination. Information on these various facilities is displayed when the occupant is less aware of traveling.

  In addition, the map information display generation unit 16 draws a button for displaying information on matters that are estimated to be of interest to the occupant from the history, even at positions away from the current location or route. It also draws buttons to search for information on the Web. These pieces of information are displayed when the occupant is less conscious of traveling.

  In addition, the map information display generation unit 16 draws a pattern similar to an hourglass in order to display information such as the progress of the itinerary in an area corresponding to the sky beyond the destination when viewed from the current location in the 3D graphics space.

  Furthermore, the map information display generation unit 16 selects information on obstacles including other vehicles and pedestrians necessary for the occupant to drive, the currently selectable route and the automatic driving control unit 11 among them. Draw the route that is superimposed on the current location on the map. The superimposed display is made visible in the peripheral visual field of the occupant by a display that does not have an edge in time and space (peripheral visual field display). The peripheral visual field display will be described in detail later. This peripheral visual field is drawn when the occupant is highly conscious of traveling.

The image generation unit 17 generates an image so that the map information generated by the map information display generation unit 16 can be seen at the viewpoint and viewing angle set by the map information display control unit. The image generated by the image generation unit 17 is displayed on the display unit 18.
The display unit 18 is installed in front of the occupant so that the center of the screen of the display unit 18 has a downward angle of 10 [°] and a viewing distance of 90 [cm] with respect to the occupant.

[Display image]
FIG. 2 shows an image displayed on the display unit 18. FIG. 2 (a) shows an example of an image immediately after the information display device 1 is activated. FIG. 2 (b) shows an example of an image in which information on various facilities around a route is displayed on a map when the occupant is highly conscious of traveling. FIG. 2 (c) shows an example of an image in which information on various facilities deviating from the route is displayed on the map when the occupant's awareness of traveling is low. Fig. 2 (d) shows the information on the route and obstacles selected by the automatic operation control unit 11 on the map so that the edge is not standing in time and space when the occupant is most conscious of driving. An example of display is shown.

The image displayed on the display unit 18 is displayed as an image similar to a bird's eye view when the front of the host vehicle is viewed from behind the host vehicle.
When the occupant operates the steering wheel, accelerator pedal, and brake pedal, and it is estimated that they are highly aware of driving, the scale of the map is enlarged, and an image that displays information about various facilities around the route is displayed on the map. (Fig. 2 (b)).

  When it was estimated that the occupant did not touch the steering wheel, accelerator pedal, or brake pedal, and the awareness of driving was low, the scale of the map was reduced and information on various facilities off the route was displayed on the map. Display the image (Figure 2 (c)).

  When it is estimated that the occupant is most conscious of traveling, the information on the route and obstacle selected by the automatic operation control unit 11 is displayed on the map so that the edge does not stand up in time and space ( Fig. 2 (d)).

  In the first embodiment, the traveling sound of the approaching vehicle from the blind spot is reproduced by sound field processing to reproduce the movement of the sound source in the 3D space and is synchronized with the visual display of the peripheral visual field display. Also, the presence of an approaching vehicle from the blind spot is taught by vibrating the seat of the driver's seat, and is synchronized with the visual display of the peripheral visual field display.

[Peripheral vision display]
As described above, the peripheral visual field display makes it possible to visually recognize information having no edge in time and space in the peripheral visual field of the occupant. Accordingly, the peripheral visual field display can be visually recognized in the occupant's peripheral vision, and the central vision can be prevented from being guided to the peripheral visual field display. Being able to visually recognize the peripheral vision display by peripheral vision is not an essential condition for the occupant who entrusts the driving operation to the automatic driving control unit 11, but the condition that the central vision is not guided is a requirement for in-vehicle display. is there.

Peripheral visual field display is the visual resolution of how much information can be recognized by the occupant as the information for the spatial frequency of the peripheral visual field display in the peripheral region of the visual field, and the occupant as information for the time frequency of the peripheral visual field display in the peripheral region It uses the visual resolution that can be recognized to some extent. That is, the peripheral visual field display is set in a range of spatial frequency and time frequency that can be read in the peripheral region of the visual field. Then, the peripheral visual field display corresponding to the set spatial frequency and time frequency ranges is displayed in the peripheral visual field of the occupant and transmitted as information.
With the peripheral visual field display, information can be presented on the display unit 18 without inducing eye movement even when the occupant needs to gaze at the front in the vehicle traveling direction.

  Differences in visual characteristics that change depending on the region of the visual field range will be described. Fig. 3 shows how the contrast sensitivity to the spatial frequency when the temporal frequency changes varies with the degree of eccentricity (0 [°] to 50 [°]) upward from the center of the field of view. . FIG. 3 (a) is a diagram showing the contrast sensitivity with respect to the spatial frequency when the temporal frequency is 0.57 [Hz]. FIG. 3B is a diagram showing the contrast sensitivity with respect to the spatial frequency when the time frequency is 2.28 [Hz]. FIG. 3 (c) is a diagram showing the contrast sensitivity with respect to the spatial frequency when the time frequency is 9.12 [Hz].

  Fig. 4 shows how the contrast sensitivity to the spatial frequency when the temporal frequency changes varies with the degree of eccentricity (0 [°] to 90 [°]) in the left-right direction from the center of the field of view. . FIG. 4 (a) is a diagram showing the contrast sensitivity with respect to the spatial frequency when the temporal frequency is 0.57 [Hz]. FIG. 4B is a diagram showing the contrast sensitivity with respect to the spatial frequency when the time frequency is 2.28 [Hz]. FIG. 4 (c) is a diagram showing the contrast sensitivity with respect to the spatial frequency when the time frequency is 9.12 [Hz].

  Fig. 5 shows how the contrast sensitivity to the spatial frequency when the temporal frequency changes changes for each downward eccentricity (0 [°] to 50 [°]) from the center of the field of view. . FIG. 5 (a) is a diagram showing the contrast sensitivity with respect to the spatial frequency when the temporal frequency is 0.57 [Hz]. FIG. 5B is a diagram showing the contrast sensitivity with respect to the spatial frequency when the time frequency is 2.28 [Hz]. FIG. 5 (c) is a diagram showing the contrast sensitivity with respect to the spatial frequency when the time frequency is 9.12 [Hz].

  FIGS. 3 to 5 are based on the results of actual measurement by the subjects. The display patterns with the same brightness were presented to two subjects, the contrast sensitivity was measured, and the subjects were standardized with the maximum contrast sensitivity. The spatial frequency is a regression curve obtained for each eccentric angle under the assumption that the contrast sensitivity due to the peripheral region of the visual field continuously changes after standardization with the maximum spatial frequency having the standardized contrast sensitivity of 0.01. In addition, the eccentric angle is 0 [°] at the center of the field of view, and 5 [°], 10 [°], 20 [°], 30 [°], 50 [°], 70 [°], Increases to 90 [°].

  The horizontal axis in FIGS. 3 to 5 is the spatial frequency, and represents the roughness and fineness of the spatial luminance change in one display pattern image. The time frequency represents the speed of luminance change at an arbitrary position in the image and depends on the switching interval (frame interval) of the display pattern image.

  The vertical axis in FIGS. 3 to 5 is contrast sensitivity, and the minimum contrast at which the luminance change can be visually recognized {(maximum luminance−minimum luminance) / in the display pattern in which the luminance changes sinusoidally in the space of each display pattern. (Maximum luminance + minimum luminance)}.

  Further, in FIGS. 3 to 5, the numerical value on the vertical axis is a numerical value obtained by standardizing the contrast sensitivity of the maximum value obtained by reciprocal of contrast {(maximum luminance-minimum luminance) / (maximum luminance + minimum luminance)} as 1. . The numerical value on the horizontal axis is a numerical value that is standardized with 1 being the highest spatial frequency (maximum value of the cut-off frequency) detected as the contrast sensitivity.

  3 to 5, when the temporal frequency is low (0.57 [Hz]) and the central vision (eccentric angle 0 [°]), the contrast sensitivity is bandpass with respect to the spatial frequency. It is a characteristic of the mold. On the other hand, when the time frequency is medium (2.28 [Hz]) and the time frequency is high (9.12 [Hz]), the eccentric angle is not central (5 [°] to 90 [°]). In some cases, the contrast sensitivity is a low-pass characteristic with respect to the spatial frequency.

  That is, when the temporal frequency is low and central vision is present, there is a peak value of contrast sensitivity with respect to the spatial frequency, and at other times, the contrast sensitivity is higher as the spatial frequency is lower. In other words, when the speed of the luminance change of the display pattern displayed at the center of the subject's visual field is slow, there is a spatial frequency band where the display pattern is most accurately visually recognized by the subject.

  As shown in FIGS. 3 to 5, as the eccentric angle increases, the cut-off frequency, which is a spatial frequency at which the contrast sensitivity value is 0.01 in all directions, decreases (decrease in visual acuity). That is, a display pattern with a high spatial frequency and a fine luminance change becomes less visible as it is displayed at a position farther from the center of the visual field regardless of the orientation.

  As shown in FIGS. 3 to 5, as the eccentric angle increases, the maximum decrease in contrast sensitivity occurs in all directions. That is, regardless of the orientation, the more distant from the center of the visual field, the more difficult it is to visually recognize even a display pattern with a low spatial frequency.

  Next, as shown in FIG. 3 to FIG. 5 based on the actual measurement value, when the time frequency is changed, the contrast sensitivity with respect to the spatial frequency is determined as the vertical and horizontal eccentric angles (0 [°] to 90 [ Explain that it can be obtained by calculation how it changes for each °]).

As this calculation method, low-pass characteristics are calculated except for band-pass characteristics with a low time frequency and an eccentric angle of 0 [°]. A function for obtaining the characteristics of the low-pass contrast sensitivity is expressed by the following equation (1).
S = 1-EXP {-EXP [-(Fs-Pp) / Sp]}… (1)

In Equation (1), S (Contrast Sensitivity) indicates contrast sensitivity, and Fs (Spatial Frequency) indicates spatial frequency. Further, the parameter Sp (Spread Parameter) in the equation (1) is expressed by the following equation (2). Further, the parameter Pp (Position Parameter) of the equation (1) is expressed by the following equation (23).
Sp = (S1 + S2) × Ec ^ S3… (2)
Pp = (P1 + P2) × Ec ^ P3 (3)

  Ec (Eccentricity) in the equations (2) and (3) is the retinal eccentric angle [Deg]. FIG. 6 is a table showing the values of S1, S2, S3, P1, P2, and P3. The values shown in FIG. 6 are assigned to S1, S2, S3, P1, P2, and P3 in the equation, respectively.

  Then, by continuously changing the value of the eccentric angle Ec to obtain the contrast sensitivity S, the contrast sensitivity for each eccentric angle in FIGS. 3 to 5 can be arbitrarily determined without depending on FIGS. 3 to 5. The contrast sensitivity value for the spatial frequency at the corner can be complemented.

A function for obtaining a bandpass type characteristic with a low time frequency and an eccentric angle of 0 [°] is expressed by the following equation (4).
S = -0.015777 + 0.8141 × EXP {-POWER (LOG10 (Fs) +1.513,2) / POWER (0.815,2)}… (4)
In Equation (4), the spatial frequency Fs is a spatial frequency corresponding to the visual acuity of central vision, and the contrast sensitivity S can be calculated as a standardized value with the maximum sensitivity as 1.

  FIG. 7 shows a visual field range having a contrast sensitivity with a maximum sensitivity of 10% according to the time frequency for each spatial frequency. FIG. 7 (a) shows the field of view when the time frequency is 0.57 [Hz]. FIG. 7 (b) shows the field of view when the time frequency is 2.28 [Hz]. FIG. 7 (c) shows a visual field range at a time frequency of 9.12 [Hz].

  The vertical axis and horizontal axis in FIG. 7 correspond to the vertical axis and horizontal axis of the visual field and represent the eccentric angle. In FIG. 7, the spatial week standardized in the range of 0 to 1 as in FIG. 3 shows the total value (minimum value 0.025). The numerical value of the spatial frequency in FIG. 7 is a value when the spatial frequency Fa that can be visually recognized by the subject is 1, corresponding to the visual acuity Va of central vision (the reciprocal of the minimum separation value indicated by the visual angle). Here, since the spatial frequency Fa = 30 [Va] (Visual Acuiy: visual acuity), when the visual acuity is 0.7, the spatial frequency visible to the subject is Fa = 21 [cpd] (Cycles Per Degree). When the numerical value in FIG. 7 is 0.025, for example, it can be expressed as 0.025 × 21 = 0.53 [cpd].

  The change of the visual field range shown in FIG. 7 is also based on the actual measurement value with respect to the change of the visual field range by the subject, and for an azimuth having no actual measurement value, an ellipse is regressed between adjacent azimuths.

  From FIG. 7 (a) to FIG. 7 (c), the range in which the contrast sensitivity of 10 [%] is obtained is narrow in the upward visual field at any time frequency. From FIG. 7, it is possible to estimate the visible field range with respect to the spatial frequency. That is, as shown in FIGS. 7 (a) to 7 (c), the spatial frequency visible in the center of the visual field increases as the time frequency increases to 0.57 [Hz], 2.28 [Hz], and 9.12 [Hz]. , 0.40, 0.24, 0.16. However, the visible range in the peripheral part of the visual field is the widest at a medium time frequency (2.28 [Hz]).

  Thus, the visible range changes depending on the time frequency and the spatial frequency. FIG. 8 is a graph showing a result of estimating, for each spatial frequency, a change in the eccentric angle of the visible range with respect to a change in time frequency. In FIG. 8, the horizontal axis is the time frequency, and the vertical axis is the eccentric angle. As can be seen from FIG. 8, as the spatial frequency decreases, the eccentric angle at which contrast sensitivity can be obtained increases, and the viewing range in which contrast sensitivity can be obtained increases. In addition, the lower the spatial frequency, the higher the temporal frequency corresponding to the peak value of the eccentric angle.

  From this tendency, in the first embodiment, the peripheral visual field display is generated as an image having a spatial frequency of 1 [CPD] or lower and a temporal frequency of 1-7 [Hz] as main components. As a result, when transmitting information by presenting images to the occupant, the contrast sensitivity of the observer at the peripheral area of the visual field is different from the peripheral area of the visual field away from the central visual field of the observer when in a standard posture. A display pattern that is an image composed of frequency components in the range of the temporal frequency and the spatial frequency that are obtained with the temporal frequency and the spatial frequency without the temporal edge and the spatial edge can be displayed.

  On the other hand, the spatial frequency is displayed as an image larger than 1 [CPD] above each facility around the route to be displayed when the consciousness of the occupant is relatively low. This makes it easier for the occupant to recognize the image in the central view.

[Action]
Conventionally, the map information displayed on the display unit 18 cannot be enlarged or reduced according to the occupant's intention unless the occupant operates the map information. was there.

  Therefore, in Example 1, when the host vehicle is automatically driven, the height of the consciousness of the occupant's travel is estimated, and the higher the consciousness of the estimated occupant's travel, the smaller the scale of the map information displayed on the display unit 18 is. The scale of map information was reduced as the consciousness decreased.

  As a result, the map information is automatically scaled according to the consciousness of the occupant to travel, so that the map information can be enlarged or reduced in accordance with the occupant's intention without forcing the occupant.

  Further, in Example 1, as the consciousness of the estimated occupant traveling is higher, more information on the shape of the road on which the host vehicle is traveling and on the road on which the host vehicle is traveling is displayed on the display unit 18, and the consciousness is lower. The display unit 18 displays a lot of facility information around the road on which the host vehicle is traveling.

  As a result, the information provided according to the height of the occupant's consciousness changes, so that information required by the occupant can be obtained without imposing a burden on the occupant.

  In the first embodiment, the vehicle speed information of the own vehicle, the information of the obstacle approaching the own vehicle, and the failure information of the automatic driving control unit 11 are displayed on the display unit 18 regardless of the estimated level of consciousness of the occupant. I tried to do it.

  As a result, information that informs the situation that the occupant needs to raise awareness of driving is always displayed, so that the occupant immediately withstands running when the occupant needs to raise awareness of driving. Awareness can be raised and the system for driving can be prepared.

In the first embodiment, when the scale of the map information displayed on the display unit 18 is changed, it is continuously changed and displayed with smooth lines.
Thereby, when the scale is changed, the map and the information displayed on the map can be displayed without interruption, and the information can be continuously provided to the occupant.

In the first embodiment, the resolution is such that a smooth line can be displayed when the scale of the map information to be generated is maximized.
Thereby, even when the scale of the map information is enlarged, the amount of information corresponding to the scale can be ensured, so that information according to the occupant's intention can be provided.

In Example 1, the scale of the map information is changed in accordance with the operation of changing the scale by the occupant regardless of the estimated level of occupant awareness.
Thereby, the crew member can change without waiting for the scale of map information to change automatically.

In the first embodiment, the information on the shape of the road on which the host vehicle is traveling and the obstacle information on the road on which the host vehicle is traveling is displayed with a spatial frequency of 1 [CPD] or less and a time frequency of 1-7 [Hz]. An image having no luminance edge as a main component is displayed.
Accordingly, the peripheral visual field display can be visually recognized in the occupant's peripheral vision, and the central vision can be prevented from being guided to the peripheral visual field display.

In the first embodiment, the map information display generating unit 16 displays the facility information around the road on which the host vehicle travels as an image having a spatial frequency larger than 1 [CPD].
As a result, the image can be easily seen in the center view of the occupant.

In the first embodiment, sound or vibration is applied to the occupant in synchronization with the display on the display unit 18.
Thereby, it is easy to grasp the meaning of the display change of the display unit 18, and the change of the situation can be transmitted to the passenger even when the display unit 18 is not in the field of view.

In the first embodiment, the steering wheel, accelerator pedal, and brake pedal operating status for operating the host vehicle, the keyboard for operating the display unit 18, the joystick, the operating status for the touch panel, and the image taken by the occupant are analyzed, The height of consciousness for driving was estimated.
Thereby, the height of a passenger | crew's consciousness can be estimated through a passenger | crew's action.

[effect]
(1) Automatic driving control unit 11 that automatically drives the vehicle regardless of the driving operation of the occupant, and when the vehicle is automatically driven by the automatic driving control unit 11 A map that reduces the scale of the map information as the consciousness of the estimated occupant's travel increases and the map information decreases as the consciousness of the estimated occupant travels increases. Information display control unit 14.
Therefore, the map information can be enlarged or reduced in accordance with the occupant's intention without imposing a burden on the occupant.

(2) The map information control unit 14 displays more information on the shape of the road on which the host vehicle is traveling and obstacles on the road on which the host vehicle is traveling as the consciousness of the estimated occupant traveling increases. A lot of facility information around the road where the vehicle runs is displayed.
Therefore, information required by the passenger can be obtained without imposing a burden on the passenger.

(3) The map information control unit 14 displays the vehicle speed information of the own vehicle, the information of obstacles approaching the own vehicle, and the failure information of the automatic driving control unit 11 regardless of the estimated level of occupant awareness. I tried to do it.
Therefore, when it becomes a situation where the occupant needs to raise awareness of traveling, the occupant can immediately increase the consciousness to withstand traveling and be prepared to perform a driving operation.

(4) The map information display control unit 14 continuously changes the scale of the map information and displays it with a smooth line.
Therefore, the information provided to the passenger is not interrupted, and the information can be provided continuously.

(5) The map information control unit 14 sets the resolution of the map information so that it can be displayed with a smooth line when the scale of the map information is maximized.
Therefore, even when the scale of the map information is enlarged, the amount of information corresponding to the scale can be ensured, so that information according to the occupant's intention can be provided.

(6) The map information display control unit 14 changes the scale of the map information in accordance with the operation of changing the scale by the occupant regardless of the estimated level of consciousness of the occupant.
Therefore, the occupant can change the map information without waiting for the scale of the map information to change automatically.

(7) The display unit 18 displays information on the shape of the road on which the host vehicle is traveling and information on obstacles on the road on which the host vehicle is traveling, with a spatial frequency of 1 [CPD] or less and a time frequency of 1-7 [Hz. ] As a main component and display as an image having no luminance edge.
Therefore, the peripheral visual field display can be visually recognized in the peripheral vision of the occupant, and the central vision can be prevented from being guided to the peripheral visual field display.

(8) The display unit 18 displays the facility information around the road on which the vehicle travels as an image having a spatial frequency larger than 1 [CPD].
Therefore, it is possible to make the image easy to see in the center view of the occupant.

(9) Synchronized with the display of map information, added sound or vibration to the occupant.
Therefore, it is easy to grasp the meaning of the display change of the display unit 18, and the change of the situation can be transmitted to the occupant even when the display unit 18 is not in the field of view.

(10) The driving awareness estimation unit 12 analyzes the operation status of the steering wheel, accelerator pedal, and brake pedal that operate the host vehicle, the operation status of the keyboard, joystick, and touch panel that operate the display unit 18, and the image taken of the occupant. Thus, the height of the consciousness of the occupant's driving was estimated.
Therefore, the height of the occupant's consciousness can be estimated through the occupant's behavior.

[Other Examples]
As described above, the present invention is not limited to the configuration of the above embodiment, and may have other configurations.
In the first embodiment, the peripheral visual field display is an image having no luminance edge whose main component is a spatial frequency of 1 [CPD] or less and a temporal frequency of 1-7 [Hz]. However, other images may be used.
The obstacle sensor shown in the ambient condition analysis unit 10 may use a laser, an ultrasonic wave, or the like as a signal to be transmitted around the host vehicle, and is not particularly limited.

11 Automatic operation controller
12 Driving awareness estimation unit
14 Map information display controller
16 Map information display generator
18 Display (display means)

Claims (10)

Automatic driving control means for automatically driving the vehicle regardless of the driving operation of the occupant;
When the host vehicle is automatically driven by the automatic driving control means, driving awareness estimating means for estimating the height of awareness of the occupant's driving;
Map information display means for displaying map information;
Map information display control means for increasing the scale of the map information as the consciousness of the estimated occupant travel is higher, and reducing the scale of the map information as the consciousness is lower;
An information display device comprising: In the information display device according to claim 1,
The map information display control means displays more information on the shape of the road on which the host vehicle travels and obstacles on the road on which the host vehicle travels, as the consciousness of the estimated occupant traveling is higher, and the consciousness is lower. An information display device that displays a lot of facility information around the road on which the host vehicle travels. In the information display device according to claim 1 or claim 2,
The map information display control means displays vehicle speed information of the own vehicle, information on obstacles approaching the own vehicle, and failure information of the automatic driving control means regardless of the estimated level of consciousness of the occupant. An information display device characterized by: In the information display device according to any one of claims 1 to 3,
The map information display control means continuously changes the scale of the map information when changing the scale, and displays it with a smooth line. In the information display device according to any one of claims 1 to 4,
The map information display control means sets the resolution of the map information so that the map information can be displayed with a smooth line when the scale of the map information is enlarged most. In the information display device according to any one of claims 1 to 5,
The said map information display control means changes the scale of the said map information according to the operation of the scale change by a passenger | crew regardless of the height of the estimated occupant's driving | running | working. In the information display device according to claim 2,
The map information display means displays a shape of a road on which the host vehicle is traveling, and information on obstacles on the road on which the host vehicle is traveling, with a spatial frequency of 1 [CPD] or less and a time frequency of 1-7 [ An information display device that displays an image having no luminance edge as a main component. In the information display device according to claim 2,
The information display device, wherein the map information display means displays facility information around a road on which the host vehicle travels as an image having a spatial frequency larger than 1 [CPD]. In the information display device according to any one of claims 1 to 8,
An information display device that applies a sound or vibration to an occupant in synchronization with the display of the map information. In the information display device according to any one of claims 1 to 9,
The travel consciousness estimation means analyzes an operation state of a steering wheel, an accelerator pedal, and a brake pedal for operating the host vehicle, a keyboard for operating the map information display means, a joystick, an operation state of a touch panel, and an image taken by a passenger. An information display device characterized by estimating the height of consciousness of a passenger.