CN106985640A - Actively anti-glare method and automobile active anti-dazzle device - Google Patents
Actively anti-glare method and automobile active anti-dazzle device Download PDFInfo
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- CN106985640A CN106985640A CN201710284333.5A CN201710284333A CN106985640A CN 106985640 A CN106985640 A CN 106985640A CN 201710284333 A CN201710284333 A CN 201710284333A CN 106985640 A CN106985640 A CN 106985640A
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- 238000001514 detection method Methods 0.000 claims abstract description 44
- 238000005192 partition Methods 0.000 claims abstract description 33
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
- B60J1/02—Windows; Windscreens; Accessories therefor arranged at the vehicle front, e.g. structure of the glazing, mounting of the glazing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
- B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The present invention relates to a kind of anti-glare method of active and automobile active anti-dazzle device, methods described is to regard the dimming glass provided with some separate liquid crystal film subregions as shield glass, the light intensity of vehicle front various types of light sources is detected in real time, dazzling light source can be caused to this car driver by finding out, pass through the positioning to this kind of light source and driver's eyes and dimming glass, the subregion belonging to intersection point of the light of this kind of light source directive human eye on dimming glass is found, the light transmission rate of respective partition is adjusted by adjusting electric current.Described device includes front windshield, controller, light-intensity test equipment, light source position detection device and human eye location equipment, front windshield uses electronic-control dimming glass, liquid crystal film inside dimming glass is arranged to several separate subregions, and each subregion, each detection device and the equal data of human eye location equipment are connected to controller.Energy of the invention is actively anti-glare, improves travel safety, and can effectively delay the aging of automotive trim.
Description
Technical field
The present invention relates to a kind of anti-glare method of the active on automobile and active anti-dazzle device, belong to automotive lighting skill
Art field.
Background technology
With developing rapidly for automotive engineering, automobile driving safe is increasingly taken seriously.Especially nighttime driving when, opposite
Strong light under the light of the automobile of traveling, the light of the flash lamp of road surface camera and various emergency cases can stimulate driver
Eyes are so as to cause dazzling.At present, conventional anti-glare mode has anti-glare headlamp, dazzle prevention spectacles and anti-glare liquid
Crystalline substance screen etc..Wherein, anti-glare headlamp can be reduced to a certain extent makes opposite vehicle driver produce dazzling risk, but
It is, if opposite automobile does not install anti-glare headlamp, very likely to produce this car driver dazzling, so that this dangerous car
Driver drives vehicle safety.Although dazzle prevention spectacles can prevent this car driver from producing dazzling, it is required that driver must be all the time
The glasses are worn, very big inconvenience is brought to driver, and dazzling glasses and the strong light such as sunshine can not be prevented to inject Ben Cheche
It is interior, therefore can not suppress or delay thus caused interior trim aging.
The content of the invention
To solve the above mentioned problem of prior art, the invention provides a kind of anti-glare method of active and automobile active anti-glazing
Mesh device, adapts to the characteristics of running car ambient light line is continually changing, and anti-glare purpose is realized in real time, improves driving peace
Quan Xing, and strong light injection in-car is effectively reduced, so as to extend the service life of automotive trim.
The main technical schemes of the present invention have：
A kind of anti-glare method of active：Shield glass is served as using electronic-control dimming glass, by the dimming glass
Internal liquid crystal film is arranged to several separate subregions, and the light transmission rate of the subregion is with the change of current strength
Each subregion is controlled to be in fully transparent state under change, original state, in real time the light intensity of the various types of light sources of detection vehicle front,
Judge whether respective sources can cause dazzling to this car driver according to light intensity, dazzling is caused to this car driver if there is meeting
Light source, this kind of light source is positioned, the space coordinate of respective sources is determined, to the eyes and front windshield of this car driver
Glass is positioned, and determines the space coordinate of eyes and front windshield, calculates the eye of respective sources directive this car driver
The intersecting point coordinate of the light of eyeball and the front windshield, and the subregion belonging to corresponding intersection point is determined, by adjusting respective partition
The light transmission rate of electric current regulation respective partition the light through subregion is reached not dazzling degree, when can be to this car driver
When causing dazzling light source by the presence of switching to be not present, the subregion that light transmission rate is lowered by is adjusted to fully transparent shape again
State.
Judge whether respective sources can cause the dazzling method can be to this car driver according to light intensity：By vehicle front
The light intensity of various types of light sources contrasted with light intensity value set in advance, if the light intensity of light source is more than or equal to and described set in advance
Fixed light intensity value, then be judged as that respective sources can cause dazzling to this car driver, be otherwise judged as will not, it is described to preset
Light intensity value be the front windshield be in fully transparent state when can cause the dazzling minimum light intensity value of this car driver.
The determination method of the intersecting point coordinate is：When the light source is spot light, calculates the spot light directive this car and drive
The intersecting point coordinate of the light of the eyes for the person of sailing and the front windshield, when the light source is not spot light, obtains the light source
Border, and the border is divided into some sections, the space coordinate of separation is obtained respectively, calculated from these separation directives
The intersecting point coordinate of the light of the eyes of this car driver and the front windshield.
The light transmission rate of the reduction respective partition makes the light through subregion reach that the method for not dazzling degree is preferred
For：According to the ratio of the light intensity of the light intensity value and light source set in advance, the light transmission rate for calculating respective partition is limited safely
Value, selectes a light transmission rate desired value, and the light transmission rate is limited safely between zero to the light transmission rate safety limit
The difference of value and the light transmission rate desired value is in setting range, according to light transmission rate and the positive correlation of current strength,
Draw the current strength desired value corresponding with the light transmission rate desired value, reduce the current strength of respective partition to the electricity
Intensity of flow desired value.
When synchronization has multiple intersection points to belong to same subregion, preferably by corresponding to the light of all intersection points of the subregion
The light intensity of used light source when light intensity sum is as the light transmission rate for reducing respective partition.
When automobile is in non-driving state, the power supply of all subregions can be turned off, is in all subregions completely impermeable
Bright state；Or, when automobile is in non-driving state, when the maximum of the light intensity of the various types of light sources of vehicle front exceedes setting
During value, the power supply of all subregions is turned off, all subregions is in complete opaque state.
The subregion is preferably arranged in M row N column matrix formula, wherein M >=1 and N >=2 or M >=2 and N >=1.
It is preferred to use light sensor and/or camera to detect the light intensity of light source in real time, using light sensor
And/or camera is positioned to light source, the eyes and front windshield of this car driver are positioned using camera,
Realize dazzling judgement whether can be caused to this car driver to the light source using the built-in controller of vehicle-mounted ADAS systems, hand over
The calculating of point coordinates, the determination of the affiliated subregion of intersection point and the regulation of subregion electric current, wherein to the specific of the regulation of subregion electric current
Implementation is position automatic addressing of the built-in controller according to the affiliated subregion of determination, and will be applied to preparation corresponding
The related control signal of the current strength of subregion passes to the respective partition of the dimming glass.
A kind of automobile active anti-dazzle device for being used to realize any one above-mentioned anti-glare method of active, including it is preceding
Windshield, controller, light source intensity detection device, light source position detection device and human eye location equipment, the front windshield glass
Glass uses the liquid crystal film inside electronic-control dimming glass, and the dimming glass to be arranged to several separate subregions, described
Each subregion, light source intensity detection device, light source position detection device and the equal data cube computation of human eye location equipment of dimming glass
In the controller, the power on/off and size of current of each subregion are controlled by the controller.
Data-interface can be provided with the dimming glass, each subregion of the dimming glass is connect by the data
Mouth carries out data interaction with the controller.
The controller is preferred to use the built-in controller of vehicle-mounted ADAS systems, the light source intensity detection device and light source
Location detecting apparatus is preferably with using the light source detection apparatus built in the ADAS systems, and the human eye location equipment is using described
Human eye location equipment built in ADAS systems, the built-in controller include control unit and memory cell, the memory cell,
Light source intensity detection device, light source position detection device and human eye location equipment are connected with described control unit.The light
Source detection apparatus can use camera and/or light sensor, and the human eye location equipment uses camera.
The beneficial effects of the invention are as follows：
The present invention adjusts this Chinese herbaceous peony windshield difference point in real time according to the real-time testing result of the light intensity to Chinese herbaceous peony light
The light transmission rate in area, prevent in driving conditions that front comes in various may cause dazzling light to stimulate this car driver's
Eyes, it is to avoid produce dazzling, dazzling the eyes for direct sunlight and reflected light can be prevented on daytime, opposite vehicle can be prevented at night
Dazzle the eyes caused by distance light and traffic camera flash lamp, greatly reduce the incidence of traffic accident, improve the driving peace of this car
Quan Xing.
It is due to the detection of the light intensity to car outer light source and real-time to the positioning of light source, driver's eyes and front windshield
Carry out, therefore the position of target partition to be adjusted can be according to dazzling the eyes the relative of light source, driver's eyes and front windshield
Change in location and real-time change, reaction are quick, and real-time is good, is very suitable for the active anti-glazing in the dynamic process of running car
Mesh.
Due to being that can be achieved to exchange the control of each subregion light transmission rate of light glass and to environment using vehicle-mounted ADAS systems
Detection so that corresponding anti-glare method is very easy to implement, and control section is not required to pay extra high cost investment.
The present invention can effectively ensure the traffic safety of this car driver, and easy to use, and control is flexible, will not be as hiding
Light eyes bring the sense of discomfort of long periods of wear to driver like that.
When automobile is in non-driving state, the power supply of all subregions can be turned off with automatic or manual, makes monoblock front windshield glass
Glass is in complete opaque state, can effectively prevent sunray from injecting automotive interior and causing automotive trim aging, delay automobile
The service life of interior trim.
Brief description of the drawings
Fig. 1 is the anti-glare schematic diagram for being directed to common several external light sources；
Fig. 2 is the partial enlarged drawing of one embodiment；
Fig. 3 be the embodiment of the present invention in tetra- light intersection points of a, b, c, d dimming glass subregion position view；
Fig. 4 is that the transmitance adjustment of dimming glass subregion where tetra- light intersection points of a, b, c, d in the embodiment of the present invention is shown
It is intended to；
Fig. 5 is the workflow diagram of the anti-glare method of active of the present invention；
The structure principle chart of the automobile active anti-dazzle device of Fig. 6 present invention.
Reference：1. opposite running automobile；The light that 1-1. opposites running automobile headlamp is sent；1-2. is by road surface
Light after rain return；2. road surface camera；The light that 2-1. road surfaces camera is sent；3. the sun；3-1. sunray；4.
The automobile of the active anti-dazzle device of the present invention is installed；5. a car driver's eyes；6. vehicle-mounted ADAS systems；7. keep out the wind glass
Glass；A, b, c, d are respectively light 1-1,1-2,2-1,3-1 and windshield for injecting driver's eyes intersection point；A, B, C, D points
Not Wei intersection point a, b, c, d on the windshield where subregion；E. the dazzling area that An Intense Beam of Light light is formed on the windshield
Domain；E. dazzling region e occupied subregions on the windshield.
Embodiment
As shown in figures 1 to 6, the invention discloses a kind of anti-glare method of active and for realizing the automobile of this method actively
Anti-dazzle device.The anti-glare method of active is：The front windshield 7 of automobile 4 is served as using electronic-control dimming glass, will be described
Liquid crystal film inside dimming glass is arranged to several separate subregions.The light transmission rate of the subregion is with current strength
Reduction and reduce, therefore the light transmission rate of each subregion can be changed by adjusting the current strength of each subregion.Light is passed through
Rate and current strength correlation, when passing to the electric current of maximum allowed current intensity, respective partition is in fully transparent shape
State (light transmission rate highest state)；When the power is turned off, respective partition is in complete opaque state (the minimum shape of light transmission rate
State).First control each subregion to be in fully transparent state under original state (such as during automobile starting), vehicle front is detected in real time
Various types of light sources light intensity, judge whether respective sources can cause dazzling to this car driver according to light intensity, if there is can pair
This car driver causes dazzling light source (can be called dazzling light source), and this kind of light source is positioned, respective sources are determined
Space coordinate, the eyes 5 and front windshield of this car driver are positioned, the space of eyes and front windshield is determined
Coordinate, calculates the light (being also accordingly referred to as dazzling light) and the front windshield of the eyes of respective sources directive this car driver
The intersecting point coordinate of glass, and the subregion belonging to corresponding intersection point is determined, zero to corresponding point of regulation between maximum allowed current intensity
The electric current in area, reduces the light transmission rate of respective partition, to reduce the light intensity for the light for injecting human eye, reaches the light through subregion
To not dazzling degree, thus avoid causing driver dazzling.Turned when dazzling light source can be caused to this car driver by existing
For in the absence of when, the subregion that light transmission rate is lowered by is adjusted to fully transparent state again.
Positioning to the dazzling light source and can carry out in real time from the beginning to the positioning of this car driver's eyes
, but only just carry out the calculating of intersecting point coordinate when in the presence of dazzling light source can be caused to this car driver.Weak point is
The real-time detection workload of which is larger.Present invention preferably employs following manner：This car driver can be made when judging to exist
During into dazzling light source, ability automatic start is to the fixed in real time of the dazzling light source, this car driver's eyes and front windshield
Position, and intersection point is calculated automatically, the affiliated subregion of intersection point is determined, and then control the light transmission rate of respective partition.
Judge whether respective sources can cause the dazzling method can be to this car driver according to light intensity：By vehicle front
The light intensity of various types of light sources contrasted with light intensity value set in advance, if the light intensity of light source is more than or equal to and described set in advance
Fixed light intensity value, then be judged as that respective sources can cause dazzling to this car driver, being otherwise judged as will not.It is described to preset
Light intensity value be the front windshield be in fully transparent state when can cause the dazzling minimum light intensity value of this car driver.Such as
Really a certain at least one light source of moment is judged as to cause dazzling to this car driver, then it represents that existing can drive to this car
Member causes dazzling light source.
The various types of light sources of vehicle front can be the common light source that the present embodiment is enumerated, for example the car of opposite driving vehicle 1
The thorn that the light 2-1 and the sun 3 that light 1-1 that lamp is sent, light 1-2, the road surface camera 2 of surface gathered water reflection are sent are sent
The sunray 3-1 of eye, can also be that other are likely to cause the dazzling light source of driver.
The determination method of the intersecting point coordinate is：When the light source is that (i.e. light source area and light source is to target point for spot light
Distance compared to sufficiently small, the light source is considered as particle) when, calculate the light of the eyes of spot light directive this car driver
The intersecting point coordinate of line and the front windshield, the affiliated subregion difference only one of which of intersection point and intersection point.
When the light source is not spot light, multiple luminous points can be chosen on the light source, and it is luminous to obtain these
The space coordinate of point, calculates the friendship of the light and the front windshield of the eyes of these luminous points directive this car driver respectively
Point coordinates.Or, as further method for optimizing, the border of the light source can be first obtained, if then being divided into the border
Dry section (such as not less than 10 sections), obtains the space coordinate of these separations respectively, calculates this car from these separation directives and drives
The intersecting point coordinate of the light of the person's of sailing eyes and the front windshield.The corresponding intersection point of this light source is multiple, and these
The affiliated subregion of intersection point is generally also to be multiple.It can be seen that, the anti-glare method is adapted to various possible light sources.
After intersecting point coordinate is determined, then the subregion belonging to the intersection point is determined, adjusted zero between maximum allowed current intensity
The electric current of each involved subregion of section, reduces the light transmission rate of respective partition, the light of injection driver's eyes is no longer dazzled
Mesh.Such as e in Fig. 3,4 is the dazzling area that the An Intense Beam of Light light emitted by such light source is formed on front windshield
Domain, E is the set of dazzling region subregion occupied on front windshield.
Intersecting point coordinate needs to use the locus coordinate of front windshield in calculating.Because front windshield is on vehicle body
Position is fixed, therefore the plane equation of generally front windshield is known.When using human eye positioning fixed on vehicle body
When equipment is positioned to the eyes of this car driver, the positioning under the same coordinate system to front windshield can be also realized simultaneously,
The positioning of the two uses same set of care testing device.
As further preferred technical scheme, the light transmission rate of reduction respective partition preferably arrives just not dazzling journey
The light intensity of the dazzling light source according to actual measurement, light intensity value set in advance is needed to draw light transmission rate desired value, then count in degree, calculating
Current strength desired value is calculated, corresponding control instruction is formed according to the current strength desired value, respective partition is passed to, implements light saturating
Cross the regulation of rate.Following methods can specifically be used：According to the ratio of the light intensity of the light intensity value and light source set in advance, meter
Calculate the light transmission rate safety limit of respective partition.A light transmission rate mesh is selected between zero to the light transmission rate safety limit
Scale value, and the difference for making the light transmission rate safety limit and the light transmission rate desired value selectes one in setting range
It is individual to be approached with the light transmission rate safety limit but the light transmission rate value smaller than the light transmission rate safety limit.Then further according to
The positive correlation of light transmission rate and current strength, draws the current strength target corresponding with the light transmission rate desired value
Value, reduces the current strength of respective partition to the current strength desired value.The setting range is on the occasion of its is smaller, described
Light transmission rate desired value just closer to the light transmission rate safety limit, ensure it is not dazzling on the premise of, respective partition it is logical
Permeability is better, more facilitates look at Chinese herbaceous peony situation.
In the above method, the light intensity of only one of which intersection point in one subregion of synchronization, only one light source of correspondence.But it is real
Trample and be also possible to intersection point of a plurality of dazzling light on front windshield and belong to a subregion, such as light source it is more intensive or
When person's subregion is larger, in this case, the light intensity sum corresponding to the dazzling light of all intersection points of the subregion can be regard as reduction
The light intensity of used light source during the light transmission rate of respective partition.
The anti-glare method of active also includes the control method when automobile is in non-driving state, that is, turns off all points
The power supply in area, makes all subregions be in complete opaque state；Or, when the maximum of the light intensity of the various types of light sources of vehicle front
During more than setting value, the power supply of all subregions is turned off, all subregions is in complete opaque state.Non- row is in for automobile
Control during state is sailed, can effectively prevent strong sunray from injecting automotive interior and causing automotive trim aging.
The subregion is preferably arranged in M row N column matrix formula, wherein M >=1 and N >=2 or M >=2 and N >=1.The quantity of subregion
M*N is more, and subregion is finer, can individually control the pixel of light transmission rate more equivalent on front windshield, resolution ratio is just
Higher, anti-glare effect is also more accurate, and dynamic change is more smooth.
The light intensity of the light source is detected in real time and the positioning of light source can be realized using light sensor, it would however also be possible to employ
Camera realizes that the positioning to the eyes and front windshield of this car driver can then be realized using camera.
One embodiment of the anti-glare method of active is preferred to use vehicle-mounted ADAS systems (Advanced Driver
Assistant System, advanced drive assist system) 6 built-in controller by plug-in realize to the light source whether
Dazzling judgement, the calculating of intersecting point coordinate, the determination of the affiliated subregion of intersection point and subregion electric current can be caused to this car driver
Regulation, using the light intensity of the built-in light sensor real time automatic detection car outer light source of the ADAS systems, and by light intensity signal
Electric signal is converted into, it is automatic to the dazzling light source and the eyes of Ben Che driver using the built-in camera of the ADAS systems
Positioned, determine its space coordinate, the space coordinate of space coordinate, the eyes of this car driver in conjunction with dazzling light source with
And the spatial coordinates calculation of the front windshield goes out the intersecting point coordinate of dazzling light and the front windshield and determines to be somebody's turn to do
Intersection point is located at the subregion on the windshield.The built-in controller according to the position automatic addressing of the affiliated subregion of determination,
And the related control signal of the current strength that respective partition is applied to preparation is passed to corresponding point of the dimming glass
Area.According to the control signal, weaken current strength and be even switched off power supply, the light transmission rate of respective partition is minimized, so that
Prevent dazzling light from stimulating the eyes of this car driver.
The execution step of the anti-glare method of active can be：
(I) light intensity of the various types of light sources of detection vehicle front；
(II) judge whether respective sources can cause dazzling to this car driver according to light intensity, this car is driven if there is meeting
The person of sailing causes dazzling light source, performs follow-up each step；If there is no dazzling light source can be caused to this car driver, then enter
One step judges the current state of each subregion of the dimming glass：If each subregion current state is fully transparent, return to step
(I), otherwise make each subregion fully transparent by the light transmission rate of changing section or whole subregions；
(III) for that dazzling light source can be caused to position this car driver, the space coordinate of respective sources is determined；
(IV) eyes and front windshield of this car driver are positioned, determines the space of eyes and front windshield
Coordinate；
(V) light of respective sources directive eyes and the intersecting point coordinate of the front windshield are calculated, and is determined corresponding
Subregion belonging to intersection point；
(VI) zero to the current strength that respective partition is adjusted between maximum permissible value, the light of reduction respective partition is passed through
Rate；
(VII) after automobile flameout, the power supply of all subregions is turned off, whole subregions is in complete opaque state.
The automobile active anti-dazzle device includes front windshield, controller, light source intensity detection device, light source position
Detection device and human eye location equipment, the front windshield use the liquid inside electronic-control dimming glass, and the dimming glass
Epitaxial is arranged to several separate subregions, each subregion of the dimming glass, light source intensity detection device, light source position
Put detection device and the equal data of human eye location equipment be connected to the controller, the power on/off and size of current of each subregion by
The controller control.When carry out electric current regulation and regulation is obtained automatically to which kind of degree according to the light-intensity test equipment
Car outer light source light intensity and the comparative result of light intensity value that pre-sets determine, be adjusted then according to institute for which subregion
Driver eye positions, the position of front windshield and light source position detection device that human eye location equipment obtains automatically is stated to obtain
The position of dazzling light source determines that the position of the intersection point of dazzling light and front windshield is determined outside the car taken.
The liquid crystal film is combined into the middle of layer glass, is integrally formed after HTHP gluing.When dimming glass is closed
When power supply or decrease current strength, different degrees of irregular spread state can be presented in the liquid crystal molecule inside dimming glass,
Now glass present complete opaque state or it is fully transparent with it is complete it is opaque between intermediateness；When logical to dimming glass
After maximum allowed current, the liquid crystal molecule of the inside is presented proper alignment, and light can be with free penetrating, now dimming glass moment
Fully transparent state is presented.
Be provided with data-interface on the dimming glass, each subregion of the dimming glass by the data-interface with
The controller carries out data interaction.
The light source intensity detection device and light source position detection device are preferably provided at the center residing for automobile rearview mirror
Position, so advantageously ensures that the light for detecting all injection driver's eyes.
The light source intensity detection device can use camera and/or light sensor, and the light source position detection is set
It is standby to use camera and/or light sensor, therefore the light intensity of the light source and the detection of position can be by same set of
Detection device is completed.The human eye location equipment is camera, preferably three-dimensional camera.
In one embodiment of the automobile active anti-dazzle device, the controller is preferred to use vehicle-mounted ADAS systems
Built-in controller, the light source intensity detection device and light source position detection device are with using the light source built in the ADAS systems
Detection device, the human eye location equipment is using the human eye location equipment built in the ADAS systems, the built-in controller bag
Include control unit and memory cell, the memory cell, light source intensity detection device, light source position detection device and human eye positioning
Equipment is connected with described control unit.The built-in controller is the control centre of the automobile active anti-dazzle device,
Each subregion of the front windshield is then controll plant, and control program is stored in the memory cell, for the control
Cell call.Memory cell uses massive store unit, is that real-time detection, calculating and data preservation provide safeguard.It is described
Light source detection apparatus uses camera and/or light sensor, and the human eye location equipment uses camera.The light source detection
All light of directive human eye are carried out photoelectric conversion into electric signal, the light intensity of the built-in controller automatic decision light by equipment
Whether it is more than light intensity value set in advance, for the light less than light intensity value set in advance, generally any place is not done in control
Reason, the light of light intensity value set in advance is more than or equal to for light intensity, and described control unit sends instruction, adjusts the light
The light transmission rate of the subregion of institute's directive.
The dimming glass is also provided with the manual power switch for controlling its whole subregion power on/off, passes through the hand
Dynamic power switch, switches on power, and whole subregions are in fully transparent state, and power cutoff, whole subregions are in light transmission rate most
Low complete opaque state.When the vehicle is stationary, the manual power switch can also be opened as needed, to observe car
Preceding situation.
The working condition of the present embodiment is as follows：
In the process of moving, the strong light for having many external worlds injects driver to the automobile 4 for being mounted with active anti-dazzle apparatus
Eyes 5, common are:The light 1-1 that the headlamp of automobile 1 of Facing Movement is sent, the light 1-2 of rainy day ground return, road
The light 3-1 that the sun 3 is sent when light 2-1 and fine day that face camera 2 is sent.Above-mentioned light can stimulate the eyes of driver,
Result even in traffic accident.
This car normal driving and it is extraneous also without strong light it is incident in the case of, all subregions of the front windshield 7 are in
"on" position, front windshield is in fully transparent state.
When there is strong illumination front windshield, the light sensor in vehicle-mounted ADAS systems 6 can obtain optical signal automatically
And optical signal is changed into electric signal.Control program is built-in with vehicle-mounted ADAS systems in memory cell, control unit calls control
Whether procedure judges light 1-1,1-2,2-1,3-1 processed are more than light intensity value set in advance, if less than set in advance
Light intensity value, is not processed；If light intensity is more than light intensity value set in advance, start to automatically adjust front windshield light transmission
Rate.
Sensor is more than light 1-1,1-2,2-1,3-1 of light intensity value set in advance light source position according to tracking light intensity
Put, the camera of ADAS systems obtains the space coordinate of corresponding light source 1,2,3 in real time, the space coordinates of driver's eyes 5 with
And the plane equation of front windshield, calculate light 1-1,1-2,2-1, the 3-1 and front windshield for injecting driver's eyes
Intersection point a, b, c, d and its subregion A, B, C, D in front windshield.Above-mentioned space coordinate conversion and intersection point calculation are calculated
Method can realize that the implementation method can be using well known to a person skilled in the art method by software program.
The control unit being arranged in vehicle-mounted ADAS systems according to intersection point a, b, c, d and its partition number A for calculating, B,
C, D, by automatic addressing function, adjust described subregion A, B, C, D current strength, so as to change above-mentioned subregion A, B, C, D
Light transmission rate, makes corresponding light 1-1,1-2,2-1,3-1 not to allow glare of driver.
When ambient remitted its fury, described control unit can improve subregion A, B, C, D light transmission rate therewith, if
Light is attenuated to when being no longer dazzling light, and it is complete transparent that described control unit will switch back into described subregion A, B, C, D
State.
Claims (10)
1. a kind of anti-glare method of active, it is characterised in that：Shield glass is served as using electronic-control dimming glass, will be described
Liquid crystal film inside dimming glass is arranged to several separate subregions, and the light transmission rate of the subregion is with current strength
Change and change, control each subregion to be in fully transparent state under original state, in real time detection vehicle front all kinds of light
The light intensity in source, judges whether respective sources can cause dazzling to this car driver according to light intensity, and this car is driven if there is meeting
Member causes dazzling light source, and this kind of light source is positioned, the space coordinate of respective sources is determined, to the eyes of this car driver
And front windshield is positioned, the space coordinate of eyes and front windshield is determined, respective sources directive this car is calculated
The intersecting point coordinate of the light of the eyes of driver and the front windshield, and the subregion belonging to corresponding intersection point is determined, by adjusting
The light transmission rate of the electric current regulation respective partition of section respective partition makes the light through subregion reach not dazzling degree, when meeting pair
When this car driver causes dazzling light source by the presence of switching to be not present, the subregion that light transmission rate is lowered by has been adjusted to again
All-transparent state.
2. actively anti-glare method as claimed in claim 1, it is characterised in that：Judge whether respective sources can be right according to light intensity
This car driver causes the dazzling method to be：By the light intensity of the various types of light sources of vehicle front and light intensity value set in advance progress pair
Than if the light intensity of light source is more than or equal to the light intensity value set in advance, being judged as that respective sources can drive to this car
Member cause dazzling, be otherwise judged as will not, the light intensity value set in advance be the front windshield be in fully transparent shape
The minimum light intensity value that can cause this car driver dazzling during state.
3. actively anti-glare method as claimed in claim 2, it is characterised in that：The determination method of the intersecting point coordinate is：When
When the light source is spot light, the friendship of the light and the front windshield of the eyes of spot light directive this car driver is calculated
Point coordinates, when the light source is not spot light, obtains the border of the light source, and the border is divided into some sections, respectively
The space coordinate of separation is obtained, the light and the front windshield glass of the eyes from these separations directive this car driver is calculated
The intersecting point coordinate of glass.
4. actively anti-glare method as claimed in claim 3, it is characterised in that：The light transmission rate of the reduction respective partition makes
Reach that the method for not dazzling degree is through the light of subregion：According to the light intensity of the light intensity value and light source set in advance
Ratio, calculates the light transmission rate safety limit of respective partition, and a light is selected between zero to the light transmission rate safety limit
Transmitance desired value, and make the difference of the light transmission rate safety limit and the light transmission rate desired value in setting range,
According to light transmission rate and the positive correlation of current strength, the current strength mesh corresponding with the light transmission rate desired value is drawn
Scale value, reduces the current strength of respective partition to the current strength desired value.
5. actively anti-glare method as claimed in claim 4, it is characterised in that：When synchronization has multiple intersection points to belong to same
It is used during using corresponding to the light intensity sum of the light of all intersection points of the subregion as the light transmission rate of reduction respective partition during subregion
The light intensity of the light source arrived.
6. the anti-glare method of active as described in claim 1,2,3,4 or 5, it is characterised in that：When automobile is in non-traveling shape
During state, the power supply of all subregions is turned off, all subregions is in complete opaque state；Or, when automobile is in non-traveling shape
During state, when the maximum of the light intensity of the various types of light sources of vehicle front exceedes setting value, the power supply of all subregions is turned off, makes to own
Subregion is in complete opaque state.
7. the anti-glare method of active as described in claim or 6, it is characterised in that：The subregion is arranged in M row N column matrix formula
Row, wherein M >=1 and N >=2 or M >=2 and N >=1.
8. actively anti-glare method as claimed in claim 7, it is characterised in that：Using light sensor and/or camera pair
The light intensity of light source is detected in real time, and light source is positioned using light sensor and/or camera, using camera to this
The eyes and front windshield of car driver are positioned, and are realized using the built-in controller of vehicle-mounted ADAS systems to the light
Whether source can cause dazzling judgement, the calculating of intersecting point coordinate, the determination of the affiliated subregion of intersection point and subregion to this car driver
The regulation of electric current, wherein the specific implementation to the regulation of subregion electric current is divided for the built-in controller according to belonging to determination
The position automatic addressing in area, and by preparing to be applied to described in the related control signal of current strength of respective partition passes to
The respective partition of dimming glass.
9. a kind of anti-glare dress of automobile active for being used to realize the anti-glare method of the active of any one in claim 1-8
Put, it is characterised in that：It is fixed including front windshield, controller, light source intensity detection device, light source position detection device and human eye
Position equipment, the front windshield uses the liquid crystal film inside electronic-control dimming glass, and the dimming glass to be arranged to several
Separate subregion, each subregion, light source intensity detection device, light source position detection device and the human eye of the dimming glass
The equal data of location equipment are connected to the controller, and the power on/off and size of current of each subregion are controlled by the controller,
Data-interface is provided with the dimming glass, each subregion of the dimming glass passes through the data-interface and the control
Device carries out data interaction.
10. automobile active anti-dazzle device as claimed in claim 9, it is characterised in that：The controller uses vehicle-mounted ADAS
The built-in controller of system, the light source intensity detection device and light source position detection device are with using built in the ADAS systems
Light source detection apparatus, the human eye location equipment is described built-in to control using the human eye location equipment built in the ADAS systems
Device processed includes control unit and memory cell, the memory cell, light source intensity detection device, light source position detection device and people
Eye location equipment is connected with described control unit, and the light source detection apparatus uses camera and/or light sensor, institute
State human eye location equipment and use camera.
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