CN107991777A - A kind of vehicle-mounted head-up-display system with error correction function - Google Patents
A kind of vehicle-mounted head-up-display system with error correction function Download PDFInfo
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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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- 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
- G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems
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Abstract
The present invention provides a kind of vehicle-mounted head-up-display system with error correction function, including control panel, front windshield, calibrate for error unit and head up display, head up display includes image generation unit and speculum, transmission optical component is equipped between image generation unit and speculum, control panel is connected with image generation unit, the display image of described image generation unit, show that image forms light beam, the virtual image is formed in front windshield, the unit that calibrates for error is used to detect the virtual image, the parameter of image generation unit is adjusted, realizes that virtual image forming is optimal.Vehicle-mounted head-up-display system in the present invention, increases the design of transmission optical component so that only needs on the basis of the image generation unit on monochromatic light road, can be achieved with the imaging of two region different distances；Add the function of calibrating for error so that the application range of head-up-display system is wider, also ensure 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 field, and in particular to a kind of car with error correction function
Carry head-up-display system.
Background technology
Head-up-display system (Head Up Display, HUD) initially uses on fighter plane, it can be crucial by some
Aerial mission information, for example height, speed, flight attitude, radar fire control information projection are to the position of infinity in front of pilot
Put, 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 exterior situation, itself and periphery one's own side, the situation information of enemy are grasped well, it is highly tight for nerve
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 lifting of driving comfort and experience sense becomes important topic, and HUD systems can ensure to drive
The person of sailing shows many effective informations on the premise of sight is without departing from surrounding environment, causes numerous manufacturers and consumer naturally
Interest.
The concept of some the vehicle-mounted HUD proposed in recent years and application, are planned to track instruction and deviation early warning, adaptive
Should cruise, real scene navigation, advanced drive assist system (ADAS), barrier prompt, even various amusements, in-car real time comprehensive letter
Breath display etc. function be added in HUD modules, thus can be more and more due to the information that HUD is shown, and cause driver without
Method is being rapidly obtained corresponding driving information at the first time.Also vehicle-mounted HUD can produce various in actual use
Error, or different drivers occur and drive vehicle, so if HUD only secures a kind of imaging region, reality can be influenced
Driver checks HUD information.
In view of drawbacks described above, creator of the present invention obtains the present invention finally by prolonged research and practice.
The content of the invention
To solve the above problems, the technical solution adopted by the present invention is, there is provided a kind of car with error correction function
Carry head-up-display system, including control panel, front windshield, calibrating for error of being connected with the control panel and are set unit
The head up display before the front windshield is put, the head up display includes image generation unit and several reflections
Mirror, gives birth between described image generation unit and speculum at least provided with a transmission optical component, the control panel with image
Connected into unit, for controlling the display image of described image generation unit, the display image forms light beam, and through described anti-
It is incident upon after penetrating mirror reflection on front windshield, so that driver observes the virtual image of the display image, it is described to calibrate for error
Unit is used to detect the virtual image, and the parameter of described image generation unit is adjusted according to calibration result, realizes the virtual image forming most
It is good.
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 being formed detection data, the diagnosis unit analyzes detection data and forms ratio
Parameter and database are contrasted, draw 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 quantity of the speculum is 2, is respectively speculum A and speculum B.
Further, the speculum is switched equipped with angular adjustment, it is connected with the control panel, described for adjusting
Angle between speculum and light beam, the angle are adjusted according to the calibration parameter.
Further, the display image is divided into main display area and secondary display area, and the main display area is positioned at figure
As the centre position of generation unit, the secondary display area is located at the marginal position of image generation unit.
Further, the content of the main display area include navigation information, ADAS, ACC, blind-spot detection, obstacle recognition,
Track prompting alarm, AR-HUD, the content of the secondary display area include speed per hour, oil mass information, the main display area and
The content of secondary display area needs to select one or select more options to show according to driver.
Further, the position of the transmission optical component and the position of the secondary display area are adapted, so that described
It is different that the corresponding display picture material of transmission optical component projects display picture material corresponding from the main display area
Distance.
Further, the transmission optical component is one or more groups in sphere, aspherical, Double-conical-surface or free form surface
Close.
Compared with the prior art the beneficial effects of the present invention are：1. there is the vehicle-mounted of error correction function in the present invention
Head-up-display system, increases the design of transmission optical component so that only needs on the basis of the image generation unit on monochromatic light road,
It can be achieved with the imaging of two region different distances；2. adding the function of calibrating for error, drawn for adjusting image generation unit
Matter and mirror angle so that the application range of head-up-display system is wider, also ensure that driver can in varied situations
See and being clearly imaged；3.PGU is made of TFT-LCD display panels, realizes the display of high speed, high brightness, high contrast
Screen message, also has the advantages that high security and reliability, shape are frivolous, low in energy consumption, service life is long；4. the angle of speculum
Spend adjustable so that the using flexible of the vehicle-mounted head-up-display system, the scope of application are wider；It is to reduce 5. increasing anti-reflection film
The intensity of reflected light, so as to increase the intensity of transmitted light, makes the vehicle-mounted head-up-display system imaging apparent.
Brief description of the drawings
Fig. 1 is the index path for the vehicle-mounted head-up-display system that the present invention has error correction function；
Fig. 2 is the structure diagram for the vehicle-mounted head-up-display system that the present invention has error correction function；
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.
Embodiment
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Embodiment one
Please refer to Fig.1 with shown in Fig. 2, it has the light path of the vehicle-mounted head-up-display system of error correction function for the present invention
Figure and structure diagram.
As depicted in figs. 1 and 2, a kind of vehicle-mounted head-up-display system, including control panel 1, front windshield 2 and be 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 connected with image generation unit 31, for controlling the display image of described image generation unit 31, institute
State display image and form light beam, and be incident upon after speculum reflection on front windshield 2, so that driver observes institute
State the virtual image 6 of display image.
Wherein, the head up display 3 is installed 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 needing to be projected in the information 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, possess good dynamic and show
Show and static state display characteristic, comfort is good, is adapted to vehicle-mounted installation and driver to drive to use for a long time, and driver is as needed
Select one or select 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 are located at the front of driver into level, realize the presentation of information of the head-up-display system high quality.
Described image generation unit 31 is made of TFT-LCD display panels, and shows the display figure using the strong backlights of LED
Picture, the TFT-LCD display panels are film liquid crystal display, it is 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, low in energy consumption, service life length.
In the present embodiment, as shown in Figure 1, the quantity of the speculum is 2, it is 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
Diagram picture forms in beam emissions to speculum A 32 and is arranged on the speculum for the first light beam 51, the speculum B 33
On the reflected light path of A 32, the light beam that the speculum A 32 is reflexed on speculum B 33 is the second light beam 52, through described anti-
It is the 3rd light beam 53 to penetrate the light beam that mirror B 33 is reflexed on front windshield 2, and driver's eye is reflexed to through the front windshield 2
The light beam of eyeball 4 is the 4th light beam 54.
Anti-reflection film is attached with the front windshield 2, its area coverage projects front comprising the 3rd light beam 53
Area on wind glass 2, i.e., the area of described anti-reflection film cannot be less than the 3rd 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 vehicle-mounted head-up-display system 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 on speculum A 32 after being passed through from the transmission optical component 7, the remainder of first light beam 51 from into
To launch as production unit 31 and be projected directly on speculum A 32, the transmission optical component 7 is used for the route for changing light beam,
Projected so that first light beam 51 is divided to for two light beams on speculum A 32, 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, its shape can be sphere, aspherical, Double-conical-surface or oneself
Combined by the one or more 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
For the distributed areas figure of the display image of vehicle-mounted head-up-display system 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 actual 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
Aid in 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 was observed that the virtual image 62 it is corresponding be main display area 311 display picture material, it was observed that the virtual image 61 it is corresponding be 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
Need 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, its 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 component
7, it is set on an edge of the TFT-LCD display panels, and the virtual image 61 that driver will be observed that at this time is presented on institute
State on an edge of the virtual image 62；As shown in figure 5, which employs four transmission optical components 7, it sets the TFT-LCD 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 corresponding secondary display area 312 of the transmission optical component 7 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 present embodiment are with one difference of embodiment, described anti-
It is Double-conical-surface speculum to penetrate mirror, its shape designs for Double-conical-surface so that is 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 referred to shown in Fig. 6, it 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 referred to shown in Fig. 7, it 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 overall 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 that preferable image quality again.
Embodiment five
A kind of vehicle-mounted head-up-display system as described above, the present embodiment is with one difference of embodiment, such as Fig. 8 institutes
Show, it is the structure diagram of the vehicle-mounted head-up-display system in the present embodiment, further includes the error being connected with the control panel 1
Alignment unit 8, the unit 8 that calibrates for error is used to detect the virtual image 6, and adjusts described image generation unit 31 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 installed 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 for the virtual image 6 that eyes 4 are seen；The virtual image 6 of acquisition is detected and forms detection data sending by the detection unit 81
To diagnosis unit 82, the diagnosis unit 82 will detect data and form detection pattern, and carry out analysis to detection pattern and form 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, draws 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 is carried out to control panel 1 by the image optics parameter of display image of the control panel 1 to image generation unit 31
Adjustment.
In addition, being additionally provided with angular adjustment switch on the speculum, it is connected 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 to complete most preferably
During imaging, the control panel 1, will be to the angle according to school described above after the order for the unit 8 that calibrates for error is received
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 its 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, draws 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, adds the function of calibrating for error, for calibrating new line display system
The error of system, it, which is detected and voluntarily diagnoses for the imaging of head-up-display system, 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 ensure that 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, on the premise of the method for the present invention is not departed from, can also make some 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 with error correction function, it is characterised in that including control panel, front windshield glass
Glass, calibrate for error unit and the head up display that is arranged on before the front windshield being connected with the control panel, institute
Stating head up display includes image generation unit and several speculums, is at least set between described image generation unit and speculum
There is a transmission optical component, the control panel is connected with image generation unit, for controlling described image generation unit
Show image, the display image forms light beam, and is incident upon after speculum reflection on front windshield, so as to drive
Person observes the virtual image of the display image, and the unit that calibrates for error is used to detect the virtual image, and adjusts institute according to calibration result
The parameter of image generation unit is stated, realizes that the virtual image forming is optimal.
2. the vehicle-mounted head-up-display system according to claim 1 with error correction function, it is characterised in that the mistake
Poor alignment unit includes detection unit, diagnosis unit and database, and the detection unit is detected the virtual image and forms detection
Data sending to diagnosis unit, analyze detection data and form alignment parameters and database and carried out pair by the diagnosis unit
Than drawing calibration parameter.
3. the vehicle-mounted head-up-display system according to claim 2 with error correction function, it is characterised in that the inspection
The position and the position of driver's eyes for surveying unit are adapted.
4. the vehicle-mounted head-up-display system according to claim 2 with error correction function, it is characterised in that the ratio
It is amount of distortion, image definition, picture position and brightness to parameter.
5. the vehicle-mounted head-up-display system according to claim 1 with error correction function, it is characterised in that described anti-
The quantity for penetrating mirror is 2, is respectively speculum A and speculum B.
6. according to any vehicle-mounted head-up-display systems with error correction function of claim 1-5, it is characterised in that
The speculum is switched equipped with angular adjustment, it be connected with the control panel, for adjust the speculum and light beam it
Between angle, the angle adjusts according to the calibration parameter.
7. according to any vehicle-mounted head-up-display systems with error correction function of claim 1-5, it is characterised in that
The display image is divided into main display area and secondary display area, and the main display area is located at the centre of image generation unit
Position, the secondary display area are located at the marginal position of image generation unit.
8. the vehicle-mounted head-up-display system according to claim 7 with error correction function, it is characterised in that the master
The content of display area includes navigation information, ADAS, ACC, blind-spot detection, obstacle recognition, track prompting alarm, AR-HUD,
The content of the secondary display area includes the content root of speed per hour, oil mass information, the main display area and secondary display area
Need to select one or select more options to show according to driver.
9. the vehicle-mounted head-up-display system according to claim 7 with error correction function, it is characterised in that described
The position and the position of the secondary display area for penetrating optical element are adapted, so that the corresponding display of the transmission optical component
Picture material projects the different distance of display picture material corresponding from the main display area.
10. the vehicle-mounted head-up-display system according to claim 9 with error correction function, it is characterised in that described
Transmission optical component is one or more combinations in sphere, aspherical, Double-conical-surface or free form surface.
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| CN117073988A (en) * | 2023-08-18 | 2023-11-17 | 交通运输部公路科学研究所 | System and method for measuring distance of head-up display virtual image and electronic equipment |
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