CN102745084A - Multi-information display head-up display device for automobile - Google Patents
Multi-information display head-up display device for automobile Download PDFInfo
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- CN102745084A CN102745084A CN2012102296805A CN201210229680A CN102745084A CN 102745084 A CN102745084 A CN 102745084A CN 2012102296805 A CN2012102296805 A CN 2012102296805A CN 201210229680 A CN201210229680 A CN 201210229680A CN 102745084 A CN102745084 A CN 102745084A
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Abstract
The invention discloses a multi-information display head-up display device for an automobile. The multi-information display head-up display device for the automobile comprises an image source screen for displaying information, an embedded controller for controlling the image source screen and a control button. The control button is installed below an instrument panel of the automobile. The multi-information display head-up display device for the automobile further comprises a reflector set, an image correcting lens and an antireflection film. The reflector set comprises a plane mirror and a non-plane mirror. The antireflection film is attached to a front windshield of the automobile. The image source screen is fixedly arranged below the plane mirror. The non-plane mirror is arranged on a reflective light path of the plane mirror. The image correcting lens is arranged right above the non-plane mirror. The embedded controller is fixedly installed right below the image source screen and is connected with the image source screen through a wiring harness. The multi-information display head-up display device for the automobile further comprises a photosensitive sensor and a loudspeaker. The multi-information display head-up display device for the automobile provided by the invention not only considers characteristics of visual ergonomics, but also displays various information.
Description
Technical field
The present invention relates to the automotive safety technical field, the Vehicular head-up read out instrument that particularly a kind of many information show.
Background technology
Vehicular head-up shows that (Head Up Display:HUD) utilizes the glass imaging; The main information that chaufeur is required is incident upon its place ahead, visual field with the mode of icon or literal; Make chaufeur can pay close attention to driving environment and relevant running data simultaneously; The dispersion attention of avoiding the driver vision skew and causing has increased traveling security.
As shown in Figure 1; Structurally general employing of at present common HUD product 1 is the primary emission structure of reflecting surface with front windshield 2 simply; Though this structure has been avoided the optical system design of relative complex, the image space 11 of project information be not enough to satisfy its institute should the tool somebody because of learning characteristic, existing result of study shows; It is only that the virtual image position of information is incident upon position, 2 meters left and right sides, chaufeur eyespot the place ahead; Because this be in the chaufeur driving procedure main vision attention band (Primary Visual Attention Lobe, PVAL), from the viewpoint of vehicle safety and ergonomics; The switching and the sight line that reduce the chaufeur visual focusing depart from and cause the way of diverting one's attention, and are that demonstration information and PVAL zone are overlapped.
Present HUD product is main with real-time vehicle running informations such as the speed of a motor vehicle, engine speeds mainly on displaying contents, and Presentation Function is comparatively single.Along with people's increases the increasing demand of automotive safety, traveling comfort; Through the HUD system the safe more and convenience of process that will make driving such as contents such as alarm message, navigation informations is provided to chaufeur; But so need complicated more demonstration and imaging design, common HUD product can't reach and satisfy the demand that the vision people shows multiple information under because of condition at present.
In addition, existing HUD product can't be according to the bright degree adjustment luminance of display images of external environment, the safety and the comfort of raising driving procedure.
Summary of the invention
For the image space that overcomes the project information that has the existence of HUD product now is not positioned at the main vision attention band of chaufeur (PVAL zone); Can't satisfy the people because of learning characteristic; Pilot's line of vision is departed from cause and divert one's attention; And Presentation Function is more single; Can not be according to the deficiencies such as power adjustment luminance of display images of external environment light, the present invention provides a kind of people of satisfying to make the image space of project information be positioned at the main vision attention band (PVAL zone) of chaufeur and the Vehicular head-up read out instrument that the more than enough information of ability shows because of learning characteristic.
The technical scheme that the present invention adopts is:
The Vehicular head-up read out instrument that many information show; Comprise the figure image source screen that is used to show information, embedded controller and the control button that is used to control said figure image source screen; Said control button is installed in the below of automobile instrument panel; It is characterized in that: also comprise reflector group, image correction lens and anti-reflection film, said reflector group comprises a plane mirror and a nonplanar reflector; Said anti-reflection film is attached on the shield glass; Said figure image source screen is fixedly installed on said plane mirror below; Said nonplanar reflector is arranged on the reflected light path of said dawn of mirror, said image correction lens be arranged on said nonplanar reflector directly over.
Further, said embedded controller be fixedly mounted on said figure image source screen under, and link to each other with said figure image source screen through wire harness.
Further, said read out instrument comprises photosensor, and said photosensor is arranged on the below of said front windshield, and links to each other with said embedded controller.
Further, said read out instrument comprises loud speaker, and said loud speaker is fixedly mounted on the below of automobile instrument panel, and links to each other with said embedded controller.
Further, said nonplanar reflector can be spherical reflector, parabolic mirror or hyperboloidal mirror.
Further, said plane mirror and said figure image source screen are miter angle.
Further, said nonplanar reflector and said figure image source screen are miter angle.
Figure image source screen of the present invention is mainly used in and shows more on-vehicle information, except essential informations such as the speed of a motor vehicle, rotating speed, can also be used to show general information such as the alerting signal that designs, navigation signal; The image that said reflector group is mainly used in the figure image source amplifies with light path and prolongs; Said image correction lens are mainly used in revises the aberration that nonplanar reflector produces, and guarantees to project the readability of the image on the front windshield; The effect of said anti-reflection film mainly is when solving image and cross the front windshield reflected image; Light is through the ghost phenomena of twice reflection process formation; It mainly through improving the reflectivity on internal layer surface, reflexes to driver's seat with most of light at inner layer glass.Said embedded controller is mainly used in the displaying contents control of figure image source and the beam control of figure image source, also lays the foundation for being connected with higher one-level driving control center or experimental simulation flat-bed simultaneously; Said photosensor is mainly used in the bright degree of the current external environment of measurement so that the brightness of embedded controller adjustment figure image source; Said loud speaker is mainly used in the information in the driving process such as relevant alarm message of prompting chaufeur and navigation information; Main generator of said control button and chaufeur mutual is used for the startup of this device and closes.
The present invention relates to calculating and understanding for the nonplanar reflector imaging when the HUD light path is designed.Mainly reflect the geometrical principle of imaging according to nonplanar reflector; Under the situation that plane mirror, nonplanar reflector and displayed map image source relative position are fixed; The approximate position of obtaining the virtual image that nonplanar reflector becomes of different radii of method through geometric construction, thus guarantee virtual image launching position can be in chaufeur eyespot the place ahead about 2 meters correct position.
Working process of the present invention:
Chaufeur is opened apparatus of the present invention through control button; System at first reads the vehicle data information on the vehicle-mounted bus; Select conventional on-board driving information interface is presented at through figure image source screen, plane mirror, nonplanar reflector, image correction lens and anti-reflection film the place ahead, the visual field of chaufeur through embedded controller; This driving information interface comprises the speed of a motor vehicle, engine speed etc.; Be the pattern that designs, be stored in the embedded controller internal memory that chaufeur can be controlled the brightness of transmission image through control button.
When system's embedded controller receives the alerting signal on the vehicle-mounted bus; For example chaufeur is not fastened the safety belt; Then transferring safety strap automatically is not that warning picture is transmitted to the place ahead, the visual field of chaufeur through above-mentioned same mode, and follows flicker, and utilizes the loud speaker prompting of sounding.After chaufeur fastened one's safety belt, this warning picture disappeared automatically, and chaufeur can be provided with the size of chimes of doom equally through control button in this process.
When chaufeur was selected the navigation information prompting through control button, the embedded controller interface switching mainly comprised direction and text prompt content that vehicle will go to navigation interface, and system will provide voice suggestion through loud speaker when arriving the turning.
In the system work process; The brightness of the real-time comparison diagram image source screen of embedded controller meeting and the strong and weak contrast of extraneous light; If it is strong excessively that photosensor detects extraneous light, and figure image source screen intensity is crossed when dark, and perhaps to detect extraneous light darker for photosensor; And the brightness of figure image source screen is crossed when bright, and embedded controller all will carry out suitable adjustment to interface brightness.
Beneficial effect of the present invention is embodied in:
1, system design ergonomic: the design of the light channel structure of this device has taken into full account the visual characteristic of chaufeur in driving procedure, when making system works better driver assistance person check various vehicle-mounted, warnings and other general information; Guaranteeing that new line shows on the basis of basic function, has improved the safety and the traveling comfort of driving procedure;
2, the designability at prompting interface: the figure image source of this device adopts TFT screen (Thin Film Transistor; The TFT screen); Its Presentation Function is controlled by the embedded system that a typical embedded process chip constitutes; This embedded system and vehicle-mounted bus are carried out real-time communication, after obtaining various on-vehicle informations, can realize the demonstration of multiple information of vehicles through designing different display patterns; Based on same principle, it can also receive the information of parts such as vehicle mounted guidance, radar, reaches functions such as warning, traffic information promoting through designing different patterns, and expansion has a high potential, and has improved the function of HUD comprehensively;
3, apparatus of the present invention have further been expanded range of use and the function of automobile-used HUD, and the same trade has also improved its safety and traveling comfort, and is simple and reliable for structure, go for various types of vehicles.
Description of drawings
Fig. 1 is existing HUD device reflectogram.
Fig. 2 is the hardware configuration scheme drawing of apparatus of the present invention.
Fig. 3 is the workflow scheme drawing of apparatus of the present invention.
The specific embodiment
With reference to Fig. 2 and Fig. 3; The Vehicular head-up read out instrument that many information show; Comprise the figure image source screen 31 that is used to show information, embedded controller 4 and the control button 42 that is used to control said figure image source screen 31; Said control button 42 is installed in the below of automobile instrument panel, it is characterized in that: also comprise reflector group, image correction lens 34 and anti-reflection film 21, said reflector group comprises a plane mirror 32 and a nonplanar reflector 33; Said anti-reflection film 21 is attached on the shield glass 2; Said figure image source screen 31 is fixedly installed on said plane mirror 32 belows; Said nonplanar reflector 33 is arranged on the reflected light path of said plane mirror 32, said image correction lens 34 be arranged on said nonplanar reflector 33 directly over.
Further, said embedded controller 4 be fixedly mounted on said figure image source screen 31 under, and link to each other with said figure image source screen 31 through wire harness.
Further, said read out instrument comprises photosensor 41, and said photosensor 41 is arranged on the below of said front windshield 2, and links to each other with said embedded controller 4.
Further, said read out instrument comprises loud speaker 43, and said loud speaker 43 is fixedly mounted on the below of automobile instrument panel, and links to each other with said embedded controller 4.
Further, said nonplanar reflector 33 can be spherical reflector, parabolic mirror or hyperboloidal mirror.
Further, said plane mirror 32 is miter angle with said figure image source screen 31.
Further, said nonplanar reflector 33 is miter angle with said figure image source screen 31.
Figure image source screen 31 of the present invention is mainly used in and shows more on-vehicle information, except essential informations such as the speed of a motor vehicle, rotating speed, can also be used to show general information such as the alerting signal that designs, navigation signal; The image that said reflector group is mainly used in the figure image source amplifies with light path and prolongs; Said image correction lens 34 are mainly used in revises the aberration that nonplanar reflector 33 produces, and guarantees to project the readability of the image on the front windshield 2; The effect of said anti-reflection film 21 mainly is when solving image and cross front windshield 2 reflected images; Light is through the ghost phenomena of twice reflection process formation; It mainly through improving the reflectivity on internal layer surface, reflexes to driver's seat with most of light at inner layer glass.Said embedded controller 4 is mainly used in the displaying contents control of figure image source and the beam control of figure image source, also lays the foundation for being connected with higher one-level driving control center or experimental simulation flat-bed simultaneously; Said photosensor 41 is mainly used in the bright degree of the current external environment of measurement so that the brightness of embedded controller 41 adjustment figure image sources; Said loud speaker 43 is mainly used in the information in the driving process such as relevant alarm message of prompting chaufeur and navigation information; Said control button 42 main generators and chaufeur mutual is used for the startup of this device and closes.
The present invention relates to calculating and understanding for nonplanar reflector 33 imagings when the HUD light path is designed.Mainly reflect the geometrical principle of imagings according to nonplanar reflector 33; Under the situation that plane mirror 32, nonplanar reflector 33 and displayed map image source relative position are fixed; Method through geometric construction is approximate obtain different radii nonplanar reflector 33 become the position of the virtual image, thereby guarantee virtual image launching position can be in chaufeur eyespot the place ahead about 2 meters correct position.
Working process of the present invention:
Chaufeur is opened apparatus of the present invention through control button; System at first reads the vehicle data information on the vehicle-mounted bus; Select conventional on-board driving information interface is presented at through figure image source screen 31, plane mirror 32, nonplanar reflector 33, image correction lens 34 and anti-reflection film 21 the place ahead, the visual field of chaufeur through embedded controller 4; This driving information interface comprises the speed of a motor vehicle, engine speed etc.; Be the pattern that designs, be stored in embedded controller 4 internal memories that chaufeur can be controlled the brightness of transmission image through control button 42.
When system's embedded controller 4 receives the alerting signal on the vehicle-mounted bus; For example chaufeur is not fastened the safety belt; Then transferring safety strap automatically is not that warning picture is transmitted to the place ahead, the visual field of chaufeur through above-mentioned same mode, and follows flicker, and utilizes loud speaker 43 prompting of sounding.After chaufeur fastened one's safety belt, this warning picture disappeared automatically, and chaufeur can be provided with the size of chimes of doom equally through control button 42 in this process.
When chaufeur is selected the navigation information prompting through control button 42; Embedded controller 4 interface switching are to navigation interface; Mainly comprise direction and text prompt content that vehicle will go, system will provide voice suggestion through loud speaker 43 when arriving the turning.
In the system work process; The brightness and the strong and weak contrast of extraneous light of the real-time comparison diagram image source screen 31 of embedded controller 4 meetings; If it is strong excessively that photosensor 41 detects extraneous light, and figure image source screen intensity is crossed when dark, and perhaps to detect extraneous light darker for photosensor 41; And the brightness of figure image source screen 31 is crossed when bright, and embedded controller 4 all will carry out suitable adjustment to interface brightness.
In the present embodiment, because the restriction of installing space in the car, figure image source screen 31 adopts is 4.3 cun TFT screen.The content of figure image source screen 31 reflexes on the nonplanar reflector 33 through plane mirror 32; Reflex on the front windshield 2 with anti-reflection film 21 by nonplanar reflector 33 again; Utilizing 33 pairs of picture materials of nonplanar reflector to amplify with light path prolongs; And through rational optical element design, the final feasible virtual image 35 that is become is positioned at the suitable position of sight line, chaufeur the place ahead, to meet the visual characteristic of chaufeur when driving.
In the present embodiment, nonplanar reflector 33 adopts the form of the parabolic mirror of concave surface.This relates to design and selection to the photometric characteristics of the radius of curvature of concave mirror 33, image correction lens 34.Because the restriction of interior space; Relative position between figure image source screen 31, plane mirror 32 and the concave mirror 33 is fixed; To this fixing relation, utilize the concave mirror 33 of optical design software Zemax to different curvature radius, the image correction lens 34 of different curvature are analyzed; For example when the radius of curvature R of concave mirror 33=500mm; Near the focal position, imaging can't be approximately a plane, so when eye-observation, causes discomfort probably because the variation of focal plane in same interface is excessive in the projection of concave mirror 33 optical axises in the virtual image 35 that is through plane mirror 32 reflection back.Final through emulation and calculating, the radius of curvature of tentatively selected concave mirror 33 gets 800 ~ 1000.In the present embodiment; Get radius of curvature R=1000 of concave mirror 33; Be x direction of principal axis with the minor face of scheming image source screen 31 this moment; Direction with perpendicular to figure image source screen 31 is the y direction, and then concave mirror 33 is about 1.5 times for the amplification of straight line in the x-y plane, and the result of ranking test proves that this is provided with the actual requirement that satisfies HUD.Behind the magnification factor of confirming imaging, in conjunction with the design standard of U.S. automotive engineer association (SAE), confirm the installation site of HUD system, to guarantee to be the requirement of image position to the operator's saddle environment.
In the present embodiment; Figure image source screen (TFT screen) 31 is of a size of 106mm x68mm, and comprehensively to the analysis and the design of optical texture, the parameter of plane mirror 32 and concave mirror 33 is respectively: plane mirror size 106mm x100mm; Concave mirror size 108mm x80mm, R=1000mm.
In the present embodiment, embedded controller 4 adopts based on Cortex
TMThe control chip STM32F103VET6 of-M3 kernel (the highest 72MHz frequency of operation); It has the holder of 512K; Have the FSMC interface; With can control large scale TFT screen after the SSD1963 embedded controller combination, the SSD1963 embedded controller can support to show the picture of 864x480x24 position, has the controllable function of backlight illumination to screen display, contrast ratio, degree of saturation specific humidity simultaneously.The STM32 control chip can also carry out data transmission through the CAN interface and the vehicle-borne CAN bus that carry, obtains information such as the current speed of a motor vehicle of vehicle, engine speed.Except above-mentioned function; In embedded controller 4, also be equipped with speech chip; The TLV320DAC3100 chip that has adopted TI company to produce; This series of products support simulation and digital microphone also can be carried out the enhancement mode audio-frequency function simultaneously, and the effect that has increased speech chip mainly is for the warning of carrying out expansion and navigation information prompt facility etc.
In the present embodiment, control button 42 has four kinds of functions, and the first, it can control the switching of HUD system; The second, it can be used for the brightness of adjustment figure image source screen 31; The 3rd, it can be used for adjusting the volume height of output audio, so that the experience of the best is provided for chaufeur; The 4th, it can switch the information displaying contents of HUD system.
The described content of this specification sheets embodiment only is enumerating the way of realization of inventive concept; Protection scope of the present invention should not be regarded as and only limit to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (7)
1. the Vehicular head-up read out instrument that many information show; Comprise the figure image source screen that is used to show information, embedded controller and the control button that is used to control said figure image source screen; Said control button is installed in the below of automobile instrument panel; It is characterized in that: also comprise reflector group, image correction lens and anti-reflection film, said reflector group comprises a plane mirror and a nonplanar reflector; Said anti-reflection film is attached on the shield glass; Said figure image source screen is fixedly installed on said plane mirror below; Said nonplanar reflector is arranged on the reflected light path of said plane mirror, said image correction lens be arranged on said nonplanar reflector directly over.
2. the Vehicular head-up read out instrument that many information as claimed in claim 1 shows is characterized in that: said embedded controller be fixedly mounted on said figure image source screen under, and link to each other with said figure image source screen through wire harness.
3. the Vehicular head-up read out instrument that many information as claimed in claim 1 shows, it is characterized in that: said read out instrument comprises photosensor, said photosensor is arranged on the below of said front windshield, and links to each other with said embedded controller.
4. the Vehicular head-up read out instrument that many information as claimed in claim 1 shows, it is characterized in that: said read out instrument comprises loud speaker, said loud speaker is fixedly mounted on the below of automobile instrument panel, and links to each other with said embedded controller.
5. the Vehicular head-up read out instrument that many information as claimed in claim 1 shows, it is characterized in that: said nonplanar reflector can be spherical reflector, parabolic mirror or hyperboloidal mirror.
6. the Vehicular head-up read out instrument that many information as claimed in claim 3 shows, it is characterized in that: said plane mirror and said figure image source screen are miter angle.
7. the Vehicular head-up read out instrument that many information as claimed in claim 4 shows, it is characterized in that: said nonplanar reflector and said figure image source screen are miter angle.
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| CN2012102296805A CN102745084A (en) | 2012-07-04 | 2012-07-04 | Multi-information display head-up display device for automobile |
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