CN108152957A - A kind of vehicle-mounted head-up-display system and the error calibrating method based on the system - Google Patents
A kind of vehicle-mounted head-up-display system and the error calibrating method based on the system Download PDFInfo
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- CN108152957A CN108152957A CN201711422909.6A CN201711422909A CN108152957A CN 108152957 A CN108152957 A CN 108152957A CN 201711422909 A CN201711422909 A CN 201711422909A CN 108152957 A CN108152957 A CN 108152957A
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- 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
- G02B27/0101—Head-up displays characterised by optical features
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Abstract
The present invention provides a kind of vehicle-mounted head-up-display system, including control panel, front windshield, calibrate for error unit and the head up display that is arranged on before the front windshield being connect with the control panel, the head up display includes image generation unit and several Double-conical-surface speculums, the control panel is connect with image generation unit, for controlling the display image of described image generation unit, the display image forms light beam, and it is incident upon on front windshield after Double-conical-surface speculum reflection, so that driver observes the virtual image of the display image.Vehicle-mounted head-up-display system in the present invention using the design of Double-conical-surface speculum, reduces the processing and manufacturing difficulty of speculum；The function of calibrating for error is increased, for adjusting image generation unit image quality and mirror angle so that the application range of head-up-display system is wider, also ensures that driver can see in varied situations and is clearly imaged.
Description
Technical field
The present invention relates to motor vehicle head-up-display system technical fields, and in particular to a kind of vehicle-mounted head-up-display system and base
In the error calibrating method of the system.
Background technology
Head-up-display system (Head Up Display, HUD) initially uses on fighter plane, can be by some keys
Aerial mission information, for example height, speed, flight attitude, radar fire control information projection are to the position of infinity in front of pilot
It puts, and fire control information can be very good to merge instruction with cockpit outdoor scene, pilot can be in sight completely without departing to cockpit
In the case of the observation of external situation, itself and periphery one's own side, the situation information of enemy are grasped well, it is tight for neural height
It is highly beneficial that the opportunity of combat pilot opened completes combat duty.
In automotive field, with the development of in-vehicle electronic system, instrument desk needs information that is comprehensive and showing more and more,
Man-machine efficacy is increasingly taken seriously, and the promotion of driving comfort and experience sense becomes important topic, and HUD systems can ensure to drive
The person of sailing shows many effective informations under the premise of sight is without departing from ambient enviroment, causes numerous manufacturers and consumer naturally
Interest.
And vehicle-mounted HUD systems are limited by factors such as actual use demand, installation space and costs, in order to control picture
Difference reaches available image quality, can generally use high order aspheric surface or free form surface technology, but the height that vehicle-mounted HUD is used
Secondary aspherical or freeform optics element difficulty of processing in process of production and detection difficulty are all larger, therefore are fabricated to
This is also higher；Vehicle-mounted HUD can generate various errors or different drivers occurs in actual use simultaneously drives vehicle
, so if HUD only secures a kind of imaging region, practical driver can be influenced and check HUD information.
In view of drawbacks described above, creator of the present invention obtains the present invention finally by prolonged research and practice.
Invention content
To solve the above problems, the technical solution adopted by the present invention is, a kind of vehicle-mounted head-up-display system is provided first,
Unit and the front windshield is arranged on including control panel, front windshield, calibrating for error of connecting with the control panel
Head up display before glass, the head up display include image generation unit and several Double-conical-surface speculums, the control
Panel processed is connect with image generation unit, and for controlling the display image of described image generation unit, the display image is formed
Light beam, and be incident upon on front windshield after Double-conical-surface speculum reflection, so that driver observes the display figure
The virtual image of picture.
Further, described image generation unit is made of TFT-LCD display panels, and using described in the strong backlight displays of LED
Show image.
Further, the quantity of the Double-conical-surface speculum is 2, respectively speculum A and speculum B.
Further, the shape of the Double-conical-surface speculum meets the following formula：
Wherein, cxFor the curvature in x directions, cyFor the curvature in y directions, kxFor x directions conical surface constant, kyFor y bearing circles
Bore curved surface constant.
Further, anti-reflection film is attached on the front windshield, area coverage projects front comprising the light beam
Area on wind glass.
A kind of error calibrating method based on the vehicle-mounted head-up-display system is provided again, and this method is：The error
Alignment unit is detected the virtual image, forms detection pattern, then analyse and compare to detection pattern, obtains calibration parameter, most
The parameter of image generation unit is adjusted according to the calibration parameter afterwards, realizes that the virtual image forming is best.
Further, the unit that calibrates for error includes detection unit, diagnosis unit and database, and the detection unit is to void
Diagnosis unit is sent to as being detected and forming detection data, the diagnosis unit analyzes detection data and forms ratio
Parameter and database are compared, obtain calibration parameter.
Further, the position of the detection unit and the position of driver's eyes are adapted.
Further, the alignment parameters are amount of distortion, image definition, picture position and brightness.
Further, the Double-conical-surface speculum is switched equipped with angular adjustment, is connect with the control panel, for adjusting
The angle between the Double-conical-surface speculum and light beam is saved, the angle is adjusted according to the calibration parameter.
Compared with the prior art the beneficial effects of the present invention are：1. the vehicle-mounted head-up-display system in the present invention uses
The design of Double-conical-surface speculum greatly reduces the processing and manufacturing difficulty of speculum, while can guarantee preferable image quality again；
2. the function of calibrating for error is increased, for adjusting image generation unit image quality and mirror angle so that head-up-display system
Application range it is wider, also ensure that driver can see in varied situations and be clearly imaged；3.PGU uses TFT-LCD
Display panel makes, and realizes the display screen message of high speed, high brightness, high contrast, also with high security and reliability,
The advantages that shape is frivolous, low in energy consumption, service life is long；4. the adjustable angle of speculum so that the vehicle-mounted head-up-display system
Using flexible, the scope of application are wider；It is the intensity in order to reduce reflected light, so as to increase the strong of transmitted light 5. increasing anti-reflection film
Degree makes the vehicle-mounted head-up-display system imaging apparent.
Description of the drawings
Fig. 1 is the index path of the vehicle-mounted head-up-display system of the present invention；
Fig. 2 is the structure diagram of the vehicle-mounted head-up-display system of the present invention；
Fig. 3 is the index path of vehicle-mounted head-up-display system in embodiment two；
Fig. 4 is distributed areas Fig. 1 of the display image of vehicle-mounted head-up-display system in embodiment three；
Fig. 5 is distributed areas Fig. 2 of the display image of vehicle-mounted head-up-display system in embodiment three；
Fig. 6 is the image simulation result of example (one) in vehicle-mounted head-up-display system in example IV；
Fig. 7 is the image simulation result of example (two) in vehicle-mounted head-up-display system in example IV；
Fig. 8 is the structure diagram of vehicle-mounted head-up-display system in embodiment five.
Specific embodiment
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Embodiment one
The index path and structure diagram for please referring to Fig.1 and shown in Fig. 2, being vehicle-mounted head-up-display system of the invention.
As depicted in figs. 1 and 2, a kind of vehicle-mounted head-up-display system including control panel 1, front windshield 2 and is arranged on
Head up display 3 before the front windshield 2, the head up display 3 include image generation unit 31 and several reflections
Mirror, the control panel 1 are connect with image generation unit 31, for controlling the display image of described image generation unit 31, institute
It states display image and forms light beam, and be incident upon on front windshield 2 after speculum reflection, so that driver observes institute
State the virtual image 6 of display image.
Wherein, the head up display 3 is mounted on the vehicle instrument desk between operator seat and front windshield 2；It is described
Front windshield 2 is generally free form surface, if the display image is directly projected on the free form surface, can cause to project
Distortion, the situation of image quality difference, it is therefore desirable to increase the head up display therebetween to avoid drawbacks described above；It is described
Control panel 1 be used for reconcile or change it is described display image transmitting information, the control panel 1 be generally steering wheel or in
The instrument group on console is entreated, the steering wheel is equipped with button, and the instrument group is equipped with button and/or touch screen, driver
The button or touch screen, the lift are operated according to the information for needing to be projected on the front windshield 2 in driving procedure
The content of the display image is transmitted on front windshield 2 by head display 3 after receiving related command；The display image
The content that can be shown includes navigation information, ADAS, ACC, blind-spot detection, obstacle recognition, track prompting alarm (LDW), AR-
HUD and speed per hour, engine speed, oil mass information or other are various from dynamic auxiliary driving information, have good dynamic and show
Show and static state display characteristic, comfort is good, and vehicle-mounted installation and driver is suitble to drive to use, and driver is as needed for a long time
It selects one or selects more options the above and be shown on the front windshield 2；Before the display image is incident upon after reflection
Position and the position of driver's eyes 4 on windshield 2 are adapted, that is, transmit height on front windshield 2 substantially with
Driver's eyes 4 realize the presentation of information of the head-up-display system high quality into level, and positioned at the front of driver.
Described image generation unit 31 is made of TFT-LCD display panels, and is used and shown figure described in the strong backlight displays of LED
Picture, the TFT-LCD display panels are film liquid crystal display, excellent with high-responsivity, high brightness, high contrast etc.
Point also improves safety in utilization and reliability, and its shape is frivolous, saves installation space, and low in energy consumption, service life is long.
In the present embodiment, as shown in Figure 1, the quantity of the speculum is 2, respectively speculum A 32 and speculum B
33, described image generation unit 31 is fixed at the lower section of the speculum A 32, aobvious in described image generation unit 31
It is the first light beam 51 that diagram picture, which is formed in beam emissions to speculum A 32, and the speculum B 33 is arranged on the speculum
On the reflected light path of A 32, the light beam that the speculum A 32 is reflected on speculum B 33 is the second light beam 52, through described anti-
It is third light beam 53 to penetrate the light beam that mirror B 33 is reflected on front windshield 2, and driver's eye is reflected into through the front windshield 2
The light beam of eyeball 4 is the 4th light beam 54.
Anti-reflection film is attached on the front windshield 2, area coverage projects front comprising the third light beam 53
Area on wind glass 2, i.e., the area of described anti-reflection film cannot be less than the third light beam 53 and project on front windshield 2
Area, the anti-reflection film advantageously reduce the intensity of reflected light, so as to increase the intensity of transmitted light, make the vehicle-mounted display system that comes back
System imaging is apparent.
As shown in Figure 1, after the vehicle-mounted head-up-display system starts work, driver can observe void in vehicle front
As 6, the display content of the virtual image 6 is the content of the display image of presently described image generation unit 31, when driver is led to
When crossing the display content of the change of the control panel 1 display image, driver can observe directly the interior of the virtual image 6 of synchronized update
Hold to control display information, it is easy to operate.
Embodiment two
A kind of vehicle-mounted head-up-display system as described above, the present embodiment are different from part and are, as shown in figure 3, its
For the index path of head-up-display system vehicle-mounted in the present embodiment, transmitted light is equipped between described image generation unit 31 and speculum
Element 7 is learned, the transmission optical component 7 is arranged on the beam path of the first light beam 51, and only some described first light
Beam 51 is projected after being passed through from the transmission optical component 7 on speculum A 32, the rest part of first light beam 51 from into
Launch as production unit 31 and be projected directly on speculum A 32, the transmission optical component 7 for changing light beam route,
It is projected on speculum A 32 for two light beams so that first light beam 51 is divided to, finally so that same image generation unit 31 is sent out
The display image gone out can show the virtual image of two different distances, i.e., driver is it is observed that by the projection optics 7
Part show image the virtual image 61 compared to other parts show image the virtual image 62 can zoom in or out, the virtual image 61 is amplified
Or reduce by the projection optics 7 shape and structure selection determines, shape can be spherical surface, aspherical, Double-conical-surface or oneself
By one or more combinations in curved surface.
Vehicle-mounted head-up-display system in the present invention, it is saturating using increasing between described image generation unit 31 and speculum
Penetrate the design of optical element 7 so that only need on the basis of the image generation unit on monochromatic light road, can be achieved with two regions not
The imaging of same distance.
Embodiment three
A kind of vehicle-mounted head-up-display system as described above, the present embodiment are different from part and are, as shown in figure 4, its
The distributed areas figure of display image for head-up-display system vehicle-mounted in the present embodiment, the display in described image generation unit 31
Image is divided into main display area 311 and secondary display area 312, and the main display area 311 is normally at image generation unit
31 centre position or the most of position for occupying image generation unit 31, the secondary display area 312 are located at image life
Into the marginal position of unit 31.
The content of the main display area 311 includes navigation information, ADAS, ACC, blind-spot detection, obstacle recognition, track
Prompting alarm (LDW), AR-HUD etc. combine the information of actual traffic road conditions, so as to enhance driver for practical driving environment
Perception；The content of the secondary display area 312 includes speed per hour, engine speed, oil mass information or other are various automatic
Assist driving information, by the transmission optical component 7 be arranged on the 312 corresponding position of secondary display area, be in order to
The imaging size of the display image of the secondary display area 312 is different from the main display area 311, so as to driver's energy
The information to be known quickly is captured, also may be implemented on front windshield 2 and show more information, the final driver
It is the display picture material of main display area 311 that the virtual image 62 observed is corresponding, and the corresponding virtual image 61 observed is auxiliary
The display picture material of display area 312.The content of the main display area 311 and secondary display area 312 is according to driver
It needs to select one or select more options to be shown on the front windshield 2.
Wherein, the quantity of the transmission optical component 7 is at least one, and position generally corresponds to TFT-LCD display panels
Four fringe regions, i.e., the fringe region of described first light beam 51.As shown in figure 4, which employs a transmission optical components
7, on the edge for setting the TFT-LCD display panels, the virtual image 61 that driver will be observed that at this time is presented on institute
It states on an edge of the virtual image 62；As shown in figure 5, which employs four transmission optical components 7, the TFT-LCD is set to show
Four edges of panel, the virtual image 61 that driver will be observed that at this time are presented on the surrounding of the virtual image 62, the virtual image
61 and the virtual image 62 image it is not of uniform size.
Vehicle-mounted head-up-display system in the present invention increases transmitted light using in 31 fringe region of described image generation unit
Learn the design of element 7 so that the virtual image 61 of the 7 corresponding secondary display area 312 of transmission optical component is imaged onto and main display
Region 311 has different distances.
Example IV
A kind of vehicle-mounted head-up-display system as described above, the difference lies in described anti-with embodiment one for the present embodiment
Mirror is penetrated as Double-conical-surface speculum, shape is designed for Double-conical-surface so that providing the preferable designing quality of head-up-display system
Meanwhile and reduce the processing of free form surface and manufacture difficulty in such optical system.
The shape of the Double-conical-surface speculum meets the following formula：
Wherein, the origin of xyz is the vertex of the Double-conical-surface speculum, and the section on the vertex is located at x/y plane, described
The normal direction of section is z-axis direction；cxFor the curvature in x directions, cyFor the curvature in y directions, RxFor the radius of curvature in x directions, RyFor y
The radius of curvature in direction, kxFor x directions conical surface constant, kyFor y directions conical surface constant.
Using as follows：
Example (one)
System design parameters are as follows：Eyeball box (EYEBOX)：130*60mm；Projector distance：2.0~2.5m；Field angle
(FOV)：6.7°*2.3°；Image planes size：40.9*20.45mm.
Wherein, in the shape equation of the speculum A 32, Ry=383.6mm, ky=-16.93, Rx=-920.62, kx
=4.64E-297；Off-axis amount X=-178.0mm, Y=-58.5mm.
In the shape equation of the speculum B 33, Ry=-767.1mm, ky=1.377, Rx=-394.56, kx=
4.826E-306；Off-axis amount X=4.0mm, Y=271.3mm.
Its image quality evaluation is please referred to shown in Fig. 6, is the image simulation result of the vehicle-mounted head-up-display system.
Example (two)
System design parameters are as follows：Eyeball box (EYEBOX)：130*60mm；Projector distance：2.0~2.5m；Field angle
(FOV)：6.0°*2.0°；Image planes size：40.9*20.45mm.
Wherein, in the shape equation of the speculum A 32, Ry=387.4mm, ky=-16.90, Rx=-921.3, kx=
0；Off-axis amount X=-179.0mm, Y=-50.6mm.
In the shape equation of the speculum B 33, Ry=-760.8mm, ky=1.372, Rx=-393.8, kx=
2.564E-308；Off-axis amount X=3.5mm, Y=280mm.
Its image quality evaluation is please referred to shown in Fig. 7, is the image simulation result of the vehicle-mounted head-up-display system.
System design parameters described above are provided by particular system；The size of the eyeball box refers to that light beam projects
Size range during driver 4 position of eyes；The projector distance refers to that the distance of driver's eyes 4 is arrived in the virtual image 6；It is described to regard
Rink corner refers to the angle based on a specific plane, refers to the angular range that can watch the virtual image 6；The image planes size refers to
The size of the virtual image 6.In two speculums described above the application of Double-conical-surface do not limit whether off-axis or whole off-axis, to spacing
Also without specific limitation, on the basis of the imaging requirements for meeting optical system.
Vehicle-mounted head-up-display system in the present invention, using the design of Double-conical-surface speculum, greatly reduces speculum
Processing and manufacturing difficulty, while can guarantee preferable image quality again.
Embodiment five
A kind of vehicle-mounted head-up-display system as described above, the difference lies in such as Fig. 8 institutes with embodiment one for the present embodiment
Show, be the structure diagram of the vehicle-mounted head-up-display system in the present embodiment, further include the error being connect with the control panel 1
Alignment unit 8, it is described to calibrate for error unit 8 for detecting the virtual image 6, and described image generation unit 31 is adjusted according to calibration result
Parameter, realize that the virtual image 6 is imaged most preferably.
The unit 8 that calibrates for error includes detection unit 81, diagnosis unit 82 and database 83, and the detection unit 81 is used
In every image optics quality of detection head-up-display system, the detection unit 81 is mounted on and 4 position phase of driver's eyes
Near place, and being detected respectively to the images of left and right eyes of driver, detection the result is that analyzed together with reference to right and left eyes, it is described
Detection unit 81 can be adjusted the position of detection unit 81 by driver by control panel 1, and its purpose is to obtain driver
The effect of the virtual image 6 that eyes 4 are seen；The virtual image 6 of acquisition is detected and forms detection data transmission by the detection unit 81
To diagnosis unit 82, detection data is formed detection pattern by the diagnosis unit 82, and is carried out analysis to detection pattern and formed ratio
To parameter, the alignment parameters are the parameters such as amount of distortion, image definition, picture position degree and brightness；Then by the comparison
Parameter is compared and analyzed with the pattern parameter in database 83, obtains final calibration parameter, and the calibration parameter is image
The parameters such as brightness, uniformity, chromaticity coordinates, pattern distortion, projector distance, binocular parallax, the projection virtual image；Final system is by the school
Quasi- parameter feedback carries out the image optics parameter of the display image of image generation unit 31 by control panel 1 to control panel 1
Adjustment.
In addition, being additionally provided with angular adjustment switch on the speculum, it is connect with the control panel 1, for adjusting
The angle between speculum and light beam is stated, when above-mentioned calibration result is to need the angle for adjusting the speculum that could complete most preferably
During imaging, the control panel 1, will be to the angle according to school described above after the order for receiving the unit 8 that calibrates for error
Quasi- parameter is adjusted.It is this to use the adjustable design of mirror angle so that the using flexible of the vehicle-mounted head-up-display system,
The scope of application is also wider.
Based on the error correction function of head-up-display system described above, the step of calibration method, is：First by described
Detection unit 81 is detected the virtual image 6, then forms detection pattern according to detection data by diagnosis unit 82, then schemes detection
Sample is analysed and compared with database 83, obtains calibration parameter, finally adjusts image generation unit 31 according to the calibration parameter
Parameter or associated reflections mirror angle, realize the optimal imaging of the virtual image 6.
Vehicle-mounted head-up-display system in the present invention, increases the function of calibrating for error, for calibrating new line display system
The error of system, the imaging for head-up-display system is detected and voluntarily diagnoses and provides calibration parameter, for adjusting image
Generation unit image quality and mirror angle etc. so that the application range of head-up-display system is wider, also ensures in different situations
Lower driver, which can see, to be clearly imaged.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, under the premise of the method for the present invention is not departed from, can also make several improvement and supplement, these are improved and supplement also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of vehicle-mounted head-up-display system, which is characterized in that including control panel, front windshield and the control panel
Calibrate for error unit and the head up display that is arranged on before the front windshield of connection, the head up display include figure
As generation unit and several Double-conical-surface speculums, the control panel is connect with image generation unit, for controlling the figure
As the display image of generation unit, it is described display image formed light beam, and through the Double-conical-surface speculum reflection after be incident upon before
On windshield, so that driver observes the virtual image of the display image.
2. vehicle-mounted head-up-display system according to claim 1, which is characterized in that described image generation unit is by TFT-
LCD display panel is formed, and shows image using described in the strong backlight displays of LED.
3. vehicle-mounted head-up-display system according to claim 1, which is characterized in that the quantity of the Double-conical-surface speculum is
2, respectively speculum A and speculum B.
4. vehicle-mounted head-up-display system according to claim 1, which is characterized in that the shape symbol of the Double-conical-surface speculum
Close the following formula：
Wherein, cxFor the curvature in x directions, cyFor the curvature in y directions, kxFor x directions conical surface constant, kyFor y directions conic
Face constant.
5. vehicle-mounted head-up-display system according to claim 1, which is characterized in that increasing is attached on the front windshield
Permeable membrane, area coverage project the area on front windshield comprising the light beam.
A kind of 6. error calibrating method of vehicle-mounted head-up-display system described in based on claim 1-5, which is characterized in that the party
Method is：The unit that calibrates for error is detected the virtual image, forms detection pattern, then analyse and compare to detection pattern, obtains
Go out calibration parameter, the parameter of image generation unit is finally adjusted according to the calibration parameter, realizes that the virtual image forming is best.
7. error calibrating method according to claim 6, which is characterized in that it is single that the unit that calibrates for error includes detection
Member, diagnosis unit and database, the detection unit, which is detected the virtual image and forms detection data, is sent to diagnosis unit, institute
It states diagnosis unit detection data is analyzed and forms alignment parameters and compared with database, obtain calibration parameter.
8. error calibrating method according to claim 7, which is characterized in that the position of the detection unit and driver's eye
The position of eyeball is adapted.
9. error calibrating method according to claim 7, which is characterized in that the alignment parameters are amount of distortion, image is clear
Clear degree, picture position and brightness.
10. error calibrating method according to claim 6, which is characterized in that the Double-conical-surface speculum is equipped with angle
Regulating switch is connect with the control panel, for adjusting the angle between the Double-conical-surface speculum and light beam, the angle
Degree is adjusted according to the calibration parameter.
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| CN110609390A (en) * | 2019-10-18 | 2019-12-24 | 大陆汽车车身电子系统（芜湖）有限公司 | Backlight brightness adjusting method for head-up display |
| CN110780445A (en) * | 2018-11-12 | 2020-02-11 | 芋头科技（杭州）有限公司 | Method and system for active calibration for assembling optical imaging systems |
| CN111754442A (en) * | 2020-07-07 | 2020-10-09 | 惠州市德赛西威汽车电子股份有限公司 | HUD image correction method, device and system |
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| CN105717646A (en) * | 2016-04-28 | 2016-06-29 | 泉州市名品电子科技有限公司 | Automotive head-up display (HUD) system adopting common convex lens |
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