WO2016103418A1 - Appareil d'affichage d'informations pour véhicule - Google Patents

Appareil d'affichage d'informations pour véhicule Download PDF

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Publication number
WO2016103418A1
WO2016103418A1 PCT/JP2014/084382 JP2014084382W WO2016103418A1 WO 2016103418 A1 WO2016103418 A1 WO 2016103418A1 JP 2014084382 W JP2014084382 W JP 2014084382W WO 2016103418 A1 WO2016103418 A1 WO 2016103418A1
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WIPO (PCT)
Prior art keywords
vehicle
projection
distance
image
display device
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Application number
PCT/JP2014/084382
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English (en)
Japanese (ja)
Inventor
裕己 永野
昭央 三沢
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日立マクセル株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 日立マクセル株式会社 filed Critical 日立マクセル株式会社
Priority to JP2016565773A priority Critical patent/JP6279768B2/ja
Priority to PCT/JP2014/084382 priority patent/WO2016103418A1/fr
Publication of WO2016103418A1 publication Critical patent/WO2016103418A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays

Definitions

  • the present invention relates to a vehicle information display device that is mounted on a vehicle and supports driving by an augmented reality function.
  • various information for example, traveling
  • vehicle information display device vehicle information display device mounted on the automobile.
  • a technology an augmented reality function, Augmented Reality that projects an image including (speed) and superimposes it on a landscape is known.
  • Patent Document 1 discloses a technique for adjusting the projection distance of the image and the size of the projection image in accordance with the vehicle speed for the purpose of displaying an image that is easy to see for the driver.
  • An object of the present invention is to provide an information display device for a vehicle that changes and displays a projection distance of an image according to a traveling state of surrounding vehicles.
  • the present invention is an information display device for a vehicle that is mounted on a vehicle and displays information by projecting an image on a space in front of the vehicle, and includes a front image detection unit that images a landscape in front of the vehicle, An input video analysis unit that performs recognition processing, an object type detection unit that determines the type of the object, an object distance detection unit that measures a distance to the object, and information to be displayed based on the type of the object An output video processing unit that outputs a video signal, a video display unit that generates a video to be projected based on the video signal, a projection optical system that projects the generated video by a projection lens, and a position of the projection lens A focusing drive unit that moves the output video processing unit, based on a type of the object and a distance to the object, controls the focusing drive unit to change a projection distance of a projected image. Configuration to.
  • the projection distance of the projection image is set to the distance to the front vehicle, and the projection image is displayed near the front vehicle. Display in position.
  • the amount of movement of the driver's viewpoint is reduced in order to see the displayed video, and safety during driving is improved.
  • FIG. 1 is a block configuration diagram of a vehicle information display device according to Embodiment 1.
  • FIG. The figure which shows the state which mounted the vehicle information display apparatus 1 in the vehicle. The figure explaining the determination method of the projection distance according to the driving
  • the flowchart which shows the image
  • FIG. 6 is a diagram illustrating a configuration of a projection optical system (time division method) in Embodiment 2.
  • FIG. FIG. 6 is a diagram illustrating a configuration of a projection optical system (color separation method) in Embodiment 3.
  • FIG. 6 is a diagram showing a configuration of a projection optical system (polarization separation method) in Example 4.
  • FIG. 1 is a block configuration diagram of the vehicle information display device according to the first embodiment.
  • the front video detection unit 2 is a camera that captures a landscape in front of the vehicle, and the input video analysis unit 3 performs object recognition processing from the captured video.
  • the object type detection unit 4 determines the type (vehicle, person, bicycle, etc.), and the object distance detection unit 5 measures the distance to the object.
  • the type of the object is identified by an image recognition technique by matching with a pattern of various objects, and the distance measurement is performed by a distance measuring technique by a camera.
  • the right / left turn detection unit 6 detects from the turn signal or the like that the host vehicle is turning right or left, and the driving information acquisition unit 7 acquires GPS information and navigation information (for example, vehicle speed).
  • the pupil detection unit 8 images the driver's or passenger's passenger's pupil 9 and detects the line-of-sight position (vertical and horizontal directions).
  • the output video processing unit 10 determines the content of the information (video) to be displayed and the projection distance based on the detection result of the type / distance of the object, the detection result of the left / right turn, the driving information, and the information on the line of sight Output a signal.
  • the video output here includes, for example, speed information and warning information (alert information), and is displayed in accordance with an object (vehicle, person, etc.) detection position in the display space. Further, the direction of the driver's line of sight is detected, and the display position is adjusted according to the direction.
  • the scaling processing unit 11 enlarges / reduces the output video according to the size of the windshield of the vehicle that is the projection surface, and the video display unit 20 projects and displays the video.
  • the video display unit 20 includes a light source and a video display element (liquid crystal element (LCD, LCOS), digital mirror element (DMD), etc.), and a video is projected onto a projection surface (front glass, half) by a projection optical system (lens, mirror). Project to a mirror.
  • a projection optical system projection optical system
  • the projection surface is described as being limited to the windshield, but this is not limited as long as it can reflect a certain amount of light, such as a half mirror called a combiner or a film.
  • the focusing drive unit 12 moves the lens position of the projection optical system so that the projection distance of the image becomes a predetermined distance.
  • the variable magnification drive unit 13 adjusts the size of the projected image by adjusting the lens position of the projection optical system.
  • the present embodiment is characterized in that, based on the detection results of the object type detection unit 4 and the object distance detection unit 5, the output video processing unit 10 controls the focusing drive unit 12 to change the projection distance of the display video. is there.
  • FIG. 2 is a diagram illustrating a state in which the vehicle information display device 1 is mounted on a vehicle.
  • the vehicle information display device 1 is housed in a dashboard of a vehicle and projects an image including information necessary for driving toward the windshield 29.
  • the projected image is reflected by the windshield 29 and is incident on the driver's pupil 9, and the driver visually recognizes the virtual image superimposed on the space in front of the windshield 29 with the scenery seen outside the vehicle. Therefore, the projection distance is a distance to the imaging position of the virtual image that is visually recognized through the windshield 29.
  • the video light emitted from the video display unit 20 is reflected by the mirror 21 and projected onto the windshield 29 via the projection lens 22.
  • the position of the projection lens 22 (lens interval) is adjusted by the focusing drive unit 12.
  • FIG. 3 is a diagram for explaining a method for determining the projection distance according to the traveling state of the vehicle.
  • the distance to the other vehicle 31 is measured.
  • the other vehicle 31 is a vehicle traveling on the route in the right and left turn direction.
  • the inter-vehicle distance S to the other vehicle 31 is compared with the threshold values S0 and S1, and the projection distance D is determined.
  • the threshold value S0 is for straight traveling
  • the threshold value S1 is for right / left turn traveling.
  • the projection distance D is made equal to the inter-vehicle distance S and the main virtual image 41 such as vehicle speed information is projected. That is, when the inter-vehicle distance is small, the main virtual image 41 is displayed in accordance with the position of the other vehicle 31.
  • the main virtual image 41 is projected with the projection distance D equal to the threshold distance S0. That is, when the inter-vehicle distance is large, it is displayed at a position before the other vehicle 31 (threshold value S0). The same applies when there is no other vehicle 31 traveling ahead, and the threshold distance S0 is displayed.
  • the threshold distance S0 is a distance (a distance that can be watched) that is most easily seen by the driver during normal driving.
  • the projection distance D is made equal to the inter-vehicle distance S and the main virtual image 41 such as vehicle speed information is projected.
  • the main virtual image 41 is projected with the projection distance D being the distance to the position (intersection) at which the vehicle turns right and left. Since the driver often looks at a relatively short distance range when turning right or left, the threshold distance S1 is set to be smaller than the threshold value S0 when traveling straight ahead. For example, the distance is set to 1 ⁇ 2 of the threshold value S0 when traveling straight, or the distance to the front pedestrian crossing.
  • an object 32 (hereinafter referred to as an alert target) 32 to be particularly noted in driving such as a pedestrian or a bicycle is detected ahead, a distance Sa to the alert target 32 is measured.
  • the projection distance D is equal to the alert distance Sa, and the alert virtual image 42 is projected.
  • the alert virtual image 42 is a frame display for emphasizing the alert target 32, but is not limited thereto.
  • FIG. 4 is a diagram illustrating a display example of a projection position and a projected image during straight traveling.
  • a display example of a projected image that can be seen from the windshield is shown on the left side and the road plan view on the right side.
  • (A) is a case where the inter-vehicle distance S to the preceding vehicle 31 is less than the threshold value S0, and the projection image (main virtual image) 41 indicating the vehicle speed information is displayed, but the projection distance D is the distance S to the preceding vehicle 31.
  • the position of the projected image 41 in the vertical and horizontal directions in the display space (hereinafter referred to as the display position in the screen) is in the vicinity of the vehicle (for example, on the road surface below the vehicle) so as not to overlap the forward vehicle 31 when viewed from the driver. It is staggering. This is to reduce the viewpoint movement between the forward vehicle 31 and the projected video 41 that are not observing the front vehicle and that is being watched.
  • (B) is a case where the inter-vehicle distance S to the preceding vehicle 31 is greater than or equal to the threshold value S0, and the projection distance D of the projection image 41 is the threshold distance S0. Also in this case, the display position of the projected image 41 in the screen is shifted to the vicinity of the vehicle so as not to overlap the preceding vehicle 31. Even when the forward vehicle 31 does not exist, the projection distance D is set to the threshold distance S0, and the display position in the screen is set to a predetermined position (for example, the center position of the screen, the traveling lane, etc.).
  • (C) is a case where an alert object 32 such as a pedestrian who is going to cross a road is detected, and a projection image (alert virtual image) 42 is displayed, but the projection distance D is a distance Sa to the alert object 32.
  • the projection image 42 in this case is a frame line surrounding the alert target 32 (pedestrian), and the alert target 32 is watched by matching the display position in the screen with the alert target 32.
  • FIG. 5 is a flowchart showing video display processing during straight traveling in FIG.
  • the front image captured by the front image detection unit 2 is analyzed by the input image analysis unit 3, and it is determined whether or not the front vehicle (reference numeral 31 in FIG. 4) is detected by the object type detection unit 4. If detected, the process proceeds to S101, and if not detected, the process proceeds to S104.
  • the inter-vehicle distance S to the preceding vehicle 31 is measured by the object distance detection unit 5.
  • the inter-vehicle distance S is compared with a predetermined threshold value S0.
  • the process proceeds to S103, and the projection distance D is the inter-vehicle distance S.
  • the process proceeds to S104, and the projection distance D is set to the threshold value S0.
  • the output video processing unit 10 projects the main virtual image at the position of the projection distance D determined in S103 or S104.
  • the video to be projected at this time is, for example, vehicle speed information from the driving information acquisition unit 7, and the video signal is created and sent to the video display unit 20.
  • the focusing drive unit 12 is controlled to project at the projection distance D.
  • the front video imaged by the front video detection unit 2 is analyzed by the input video analysis unit 3, and an alert target (reference numeral 32 in FIG. 4) such as a pedestrian is detected by the object type detection unit 4.
  • an alert target such as a pedestrian is detected by the object type detection unit 4.
  • the object distance detection unit 5 measures the alert distance Sa to the alert target 32.
  • the projection distance D is the alert distance Sa.
  • the output video processing unit 10 projects an alert virtual image at the position of the projection distance D determined in S108.
  • the video projected at this time is, for example, a frame surrounding the alert target 32, and the video signal is created and sent to the video display unit 20. Further, the focusing drive unit 12 is controlled to project at the projection distance D.
  • FIG. 6 is a diagram showing a display example of a projection position and a projected image when traveling left and right. That is, when a right turn or a left turn is scheduled to be performed, the display is switched according to the distance S between the vehicles.
  • a display example of a projected image that can be seen from the windshield on the left side and the windshield on the right side is shown for the case of turning right.
  • the threshold S1 of the inter-vehicle distance at the time of right / left turn traveling is set to be smaller than the threshold S0 at the time of straight traveling.
  • (A) is the case where the distance S to the forward vehicle 31 in the right turn direction is less than the threshold value S1
  • the projection distance D of the projected image (main virtual image) 41 indicating the vehicle speed information is the distance S to the forward vehicle 31.
  • the display position of the projected image 41 in the screen is shifted to the vicinity of the vehicle (for example, the rear of the vehicle) so as not to overlap the forward vehicle 31. This is to reduce the viewpoint movement between the forward vehicle 31 and the projected video 41 that are not observing the front vehicle and that is being watched.
  • (B) is a case where the distance S to the forward vehicle 31 in the right turn direction is greater than or equal to the threshold S1, and the projection distance D of the projected image 41 is the distance Sb to the intersection. In addition, even when the front vehicle 31 does not exist, the projection distance D is the distance Sb to the intersection.
  • the display position of the projected image 41 in the screen is the exit position of the intersection.
  • the vehicle turns right and left and enters the building.
  • the projection distance D is the distance to the entrance of the building
  • the display position is the position before the entrance.
  • the right / left turn entry position can be determined by using navigation information or the like.
  • FIG. 7 is a flowchart showing a video display process during the right / left turn traveling of FIG.
  • the right / left turn detection unit 6 detects a right / left turn operation from a turn signal, route guidance information, speed / camera information, and determines the direction (right turn or left turn).
  • the image captured by the front image detection unit 2 is analyzed by the input image analysis unit 3, and it is determined whether the object type detection unit 4 detects the forward vehicle in the right-left turn direction (reference numeral 31 in FIG. 6). If detected, the process proceeds to S202, and if not detected, the process proceeds to S205.
  • the inter-vehicle distance S to the preceding vehicle 31 is measured by the object distance detection unit 5.
  • the inter-vehicle distance S is compared with a predetermined threshold value S1.
  • the process proceeds to S204, where the projection distance D is the inter-vehicle distance S.
  • the process proceeds to S205 and the distance Sb to the intersection is measured.
  • the projection distance D is the distance Sb to the intersection.
  • the output video processing unit 10 projects the main virtual image at the position of the projection distance D determined in S204 or S206.
  • the video to be projected at this time is, for example, vehicle speed information from the driving information acquisition unit 7, and the video signal is created and sent to the video display unit 20.
  • the focusing drive unit 12 is controlled to project at the projection distance D.
  • the projection distance of the image (information) to be displayed is changed according to the vehicle traveling conditions of the own vehicle and the other vehicle, the amount of movement of the driver's viewpoint in order to see the displayed image There is an effect that safety is improved while driving.
  • FIG. 8 is a diagram illustrating a configuration of the projection optical system (time division method) in the second embodiment.
  • the image display unit 20 emits a plurality (three) of images 50a, 50b, and 50c in a time division manner and is reflected on different optical paths by the three time division mirrors 21a, 21b, and 21c arranged on the optical path.
  • Projection lenses 22 a, 22 b, and 22 c are disposed in the respective optical paths, and the images 50 a, 50 b, and 50 c are projected onto the windshield 29.
  • the positions (lens intervals) of the projection lenses 22a, 22b, and 22c by the focusing drive unit 12, it is possible to display the three images 50a, 50b, and 50c with different projection distances. .
  • FIG. 9 is a diagram illustrating a block configuration of the vehicle information display apparatus according to the second embodiment.
  • a time division mirror control unit 14 is added to the configuration of the first embodiment (FIG. 1).
  • the time division mirror control unit 14 corresponds to the time division mirror 21a corresponding to the emission timing of each of the images 50a, 50b, 50c.
  • 21b, 21c are switched on (rotated to the reflecting state) and projected through the projection lenses 22a, 22b, 22c.
  • the driver can simultaneously display the plurality of images at different projection positions. Visual recognition is possible.
  • the direction of the driver's line of sight (pupil 9) is detected by the pupil detection unit 8, and the duty ratio (ON time) with respect to the image that the driver is gazing at is increased to make the image brighter than the others. Visibility can be improved.
  • FIG. 10 is a diagram illustrating a configuration of a projection optical system (color separation method) in the third embodiment.
  • the video display unit 20 divides a plurality of (three) videos 50R, 50B, and 50G into different display colors (R, B, and G), synthesizes them, and emits them.
  • the emitted composite image is reflected by the dichroic mirror 21G arranged on the optical path, the G image 50G is reflected by the dichroic mirror 21B, the B image 50B is reflected by the reflection mirror 21R, and the R image 50R is reflected by three images. Separated into 50R, 50B, and 50G, they travel on different optical paths.
  • the images 50R, 50B, and 50G are projected onto the windshield 29 through the projection lenses 22R, 22B, and 22G, respectively.
  • the focusing drive unit 12 By controlling the positions (lens intervals) of the projection lenses 22R, 22B, and 22G by the focusing drive unit 12, it is possible to display three images 50R, 50B, and 50G with different projection distances.
  • FIG. 11 is a diagram illustrating a block configuration of the vehicle information display apparatus according to the third embodiment.
  • a color division control unit 15 is added to the configuration of the first embodiment (FIG. 1).
  • the color division control unit 15 divides a plurality of projection videos into different display colors according to the type thereof, for example, the main video (vehicle speed information) is configured in B or G color, and the alert video is configured in R color.
  • the focusing drive unit 12 can change the projection distance of each image 50R, 50B, 50G by controlling the position of the projection lens 22R, 22B, 22G corresponding to each image color.
  • the direction of the driver's line of sight (pupil 9) is detected by the pupil detection unit 8, and the intensity of the color of the image being viewed is increased, thereby making the image brighter than others and improving the visibility. it can.
  • two dichroic mirrors 21G and 21B are added to display three images, but it goes without saying that the number of display colors and the number of dichroic mirrors can be increased to further increase the number of images to be displayed simultaneously. Yes.
  • FIG. 12 is a diagram illustrating a configuration of a projection optical system (polarization separation method) in the fourth embodiment.
  • the image display unit 20 switches two images 50 a and 50 b whose polarization directions are not unified (non-polarized) by a digital mirror element (DMD) or the like to time division and outputs the images to the polarization separation optical system 23.
  • the polarizing plate 24 and the liquid crystal element 25 are switched and converted into P-polarized or S-polarized images in synchronization with the timing of the incident images 50a and 50b.
  • the liquid crystal element 25 is controlled, and the image 50a is converted to P-polarized light and the image 50b is converted to S-polarized light. Thereafter, the light is separated into P-polarized light and S-polarized light by the polarization beam splitter 26 and led to different optical paths.
  • the P-polarized light (image 50a) passes through the polarization beam splitter 26 and travels toward the windshield 29 via the projection lens 22a.
  • the S-polarized light (image 50b) is reflected by the polarization beam splitter 26, passes through the projection lens 22b, is reflected by the projection direction switching mirror 27, and travels toward the windshield 29.
  • the projection positions on the windshield 29 of the two images 50a and 50b are Each can be displayed separately on the front of the driver (pupil 9a) and the front of the passenger seat (pupil 9b). Further, the image 50b in front of the passenger seat can be viewed as the image 50b 'even by the driver (pupil 9a) by changing the angle of the projection direction switching mirror 27.
  • FIG. 13 is a diagram illustrating a block configuration of the vehicle information display apparatus according to the fourth embodiment.
  • a polarization switching liquid crystal control unit (polarization switching control unit) 16 and a projection direction switching mirror control unit 17 are added to the configuration of the first embodiment (FIG. 1).
  • the polarization switching liquid crystal control unit 16 controls the polarization separation optical system 23 and controls the liquid crystal element 25 to switch the polarization direction of the emitted light between P-polarized light and S-polarized light.
  • the projection direction switching mirror control unit 17 switches the angle of the projection direction switching mirror 27 to switch the projection direction of the video 50b to either the driver seat or the passenger seat.
  • the two images 50a and 50b having different projection distances can be viewed almost simultaneously.
  • the observation position can be switched between the driver seat and the passenger seat.
  • the embodiments 2 to 4 described above are effective even when used alone, but by appropriately combining them, the number of images to be displayed can be further increased by changing the projection distance.

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Abstract

Dans un appareil d'affichage d'informations (1) pour un véhicule qui projette une image vers un espace en avant du véhicule, une unité de traitement (10) d'images de sortie commande une unité (12) d'entraînement de focalisation sur la base du type d'objet détecté en avant du véhicule et de la distance par rapport à l'objet et déplace la position d'une lentille de projection (22) de sorte à modifier une distance de projection (D) d'une image projetée. Dans les cas où le type d'objet correspond à un véhicule en avant (31) et où la distance (S) par rapport au véhicule en avant est inférieure à un seuil (S0), la distance de projection (D) est définie comme la distance (S) par rapport au véhicule en avant (31) et une image de projection (41) est affichée dans une position dans le voisinage du véhicule en avant. Dans les cas où le type d'objet correspond à un objet d'alerte (32), la distance de projection (D) est définie comme la distance (Sa) par rapport à l'objet d'alerte et une image d'alerte (42) est affichée.
PCT/JP2014/084382 2014-12-25 2014-12-25 Appareil d'affichage d'informations pour véhicule WO2016103418A1 (fr)

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JP2016565773A JP6279768B2 (ja) 2014-12-25 2014-12-25 車両用情報表示装置
PCT/JP2014/084382 WO2016103418A1 (fr) 2014-12-25 2014-12-25 Appareil d'affichage d'informations pour véhicule

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JP2018146883A (ja) * 2017-03-08 2018-09-20 パナソニックＩｐマネジメント株式会社 画像投写装置
WO2018180856A1 (fr) * 2017-03-31 2018-10-04 コニカミノルタ株式会社 Appareil d'affichage tête haute
WO2018180857A1 (fr) * 2017-03-31 2018-10-04 コニカミノルタ株式会社 Appareil d'affichage tête haute
CN112154077A (zh) * 2018-05-24 2020-12-29 三菱电机株式会社 车辆用显示控制装置和车辆用显示控制方法
JP2021026131A (ja) * 2019-08-06 2021-02-22 三菱自動車工業株式会社 車両の報知システム
JP2021165776A (ja) * 2020-04-06 2021-10-14 株式会社デンソー 虚像表示装置及び表示制御ユニット
WO2023176897A1 (fr) * 2022-03-16 2023-09-21 株式会社小糸製作所 Dispositif de projection d'images et procédé de projection d'images
CN117644815A (zh) * 2024-01-29 2024-03-05 深圳市欧冶半导体有限公司 基于智能车灯系统的盲区告警方法、装置、设备和系统

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JP7189513B2 (ja) 2017-03-31 2022-12-14 コニカミノルタ株式会社 ヘッドアップディスプレイ装置
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EP3606064A4 (fr) * 2017-03-31 2020-03-18 Konica Minolta, Inc. Appareil d'affichage tête haute
JPWO2018180856A1 (ja) * 2017-03-31 2020-05-14 コニカミノルタ株式会社 ヘッドアップディスプレイ装置
WO2018180857A1 (fr) * 2017-03-31 2018-10-04 コニカミノルタ株式会社 Appareil d'affichage tête haute
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CN112154077A (zh) * 2018-05-24 2020-12-29 三菱电机株式会社 车辆用显示控制装置和车辆用显示控制方法
JP7334529B2 (ja) 2019-08-06 2023-08-29 三菱自動車工業株式会社 車両の報知システム
JP2021026131A (ja) * 2019-08-06 2021-02-22 三菱自動車工業株式会社 車両の報知システム
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JP7327253B2 (ja) 2020-04-06 2023-08-16 株式会社デンソー 虚像表示装置
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