CN101607520A - Diaphragm system, automobile shading system and method - Google Patents
Diaphragm system, automobile shading system and method Download PDFInfo
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- CN101607520A CN101607520A CNA2008101151361A CN200810115136A CN101607520A CN 101607520 A CN101607520 A CN 101607520A CN A2008101151361 A CNA2008101151361 A CN A2008101151361A CN 200810115136 A CN200810115136 A CN 200810115136A CN 101607520 A CN101607520 A CN 101607520A
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Abstract
The invention discloses a kind of diaphragm system, automobile shading system and method, diaphragm system includes liquid crystal shading plate, liquid-crystal controller, liquid-crystal controller is connected with described liquid crystal shading plate, and described at least one liquid crystal array is when being controlled by described liquid-crystal controller, and its diaphaneity can change.The automobile shading system comprises: registration device is used for determining the position of the eyes of the personnel on the motor vehicle seat; The photoinduction unit is used for the incident angle of measurement light source; Calculating unit, be connected respectively with registration device, photoinduction unit, by the zone on the liquid crystal shading plate, calculating coverage area based liquid crystal array makes to have covered regional liquid crystal array at least and be rendered as opaque state when calculating the personnel of light source irradiation to motor vehicle seat eyes.The present invention discloses a kind of automobile shading method.The present invention can be according to position of driver in the automobile and automatic compensation shading position, thereby avoids the stimulation of high light to eyes.
Description
Technical field
The present invention relates to diaphragm system, relate in particular to a kind of can be according to light intensity and the diaphragm system of automatic compensation pellucidity, take advantage of personnel positions and self-align automobile shading system and method according to sitting in the automobile.
Background technology
Present glass for vehicle window, door glass etc. have strengthened the daylighting ability in automobile, room, are therefore just used more and more.When bringing convenience, also exist some problems: for example, under the strong especially situation of light intensity, can cause the temperature in the car, in the room high especially, people have to hang curtain and wait the irradiation of avoiding high light.And for automobile, under the high light situation even can influence the normal driving of chaufeur, below be elaborated.
In the vehicle traveling process, the time regular meeting travel facing to the sun, like this, the navigating mate that the occupant is particularly front-seat, eyes can be subjected to the direct projection of the sun and influence driving safety.Be directed to this, the front-seat top operated by rotary motion of automobile has can roll over the sun shield of putting, and when travelling facing to the sun, puts down the sunlight that sun shield can shelter from the front upper place, avoids the irradiation of sunlight to front-seat personnel's eyes such as chaufeurs, has guaranteed the safety of vehicle drive.But, consider the visual field of chaufeur, the area of sun shield is very limited, the sunlight that is covered is very limited, the irradiating angle between the sun and chaufeur hour, sun shield even do not have any effect.For example, during nighttime meeting, the distance light of automobile etc. are with the eyes of direct projection chaufeur, and sun shield can't stop the light of forward direction direct projection.
At present, automobile driver is worn the problem that sunglasses solve sunlight direct projection eyes usually, and wearing of sunglasses only is to have stopped a part of light, only be that high light is died down, the irradiation of light can not be stopped, when light is strong, stimulation can not be avoided human eye to eyes.And, exist chaufeur in driving procedure, to win or wear the situation of sunglasses, also be a kind of unsafe factor.
Summary of the invention
In view of this, the main purpose of the embodiment of the invention be to provide a kind of diaphragm system, can be according to light intensity and the automatic compensation pellucidity.
For achieving the above object, the technical scheme of the embodiment of the invention is achieved in that
A kind of diaphragm system comprises:
The liquid crystal shading plate is made of at least one liquid crystal array;
Liquid-crystal controller is connected with described liquid crystal shading plate, and described at least one liquid crystal array is when being controlled by described liquid-crystal controller, and its diaphaneity can change.
Preferably, described system also comprises:
The luminous intensity measurement unit is used to measure the incident light intensity of described liquid crystal shading plate, obtains strength information;
Described liquid-crystal controller is adjusted described at least one liquid crystal array of described liquid crystal shading plate according to described intensity signal, makes it present cooresponding pellucidity.
Another purpose of the embodiment of the invention is to provide a kind of automobile shading system and method, can take advantage of personnel positions and automatic compensation shading position according to sitting in the automobile, thereby avoid the stimulation of high light to eyes.
For achieving the above object, the technical scheme of the embodiment of the invention is achieved in that
A kind of automobile shading system comprises:
The liquid crystal shading plate is arranged on the Windshield of automobile, and described liquid crystal shading plate is made of at least one liquid crystal array;
Liquid-crystal controller is connected with described liquid crystal shading plate, and described at least one liquid crystal array is when being controlled by described liquid-crystal controller, and its diaphaneity can change;
Registration device is used for determining according to a virtual coordinate system position of the eyes of the personnel on the described motor vehicle seat, obtains a location information;
The photoinduction unit is used for the incident angle of measurement light source, obtains angle information;
Calculating unit is connected respectively with described registration device, photoinduction unit, determines that according to described location information and described angle information needs are adjusted the liquid crystal array of diaphaneity in described at least one liquid crystal array, and produces control command;
Wherein, described liquid-crystal controller is adjusted the described diaphaneity that needs the liquid crystal array of adjustment diaphaneity based on described control command after receiving described control command.
Preferably, described registration device comprises:
At least one camera is fixed in the described automobile, is used for the face of the personnel on the described motor vehicle seat is made a video recording, and obtains face-image;
Diagnosis unit are used to identify the image space of the eyes of the personnel on the motor vehicle seat described in the described face-image;
Positioning unit, the image space of eyes that is used for the personnel on the described motor vehicle seat that calculate is at the coordinate position of described face-image, described coordinate position is converted to the coordinate points or the coordinates regional of described virtual coordinate system, and described coordinate points or coordinates regional information are sent to described calculating unit.
Preferably, described registration device comprises:
Signal emitting-source is arranged near the eyes of the personnel on the described motor vehicle seat, is used to launch the wireless test signal;
At least two signal receiving units, be fixedly set on the described automobile, be used to receive described wireless test signal, calculate emission angle or distance between described signal emitting-source and described at least two signal receiving units according to the described test signal that is received, obtain emission angle information or range information;
Positioning unit, be connected with described at least two signal receiving units, be used for the location information according to described at least two signal receiving units, described emission angle information or range information, calculate the coordinate points of described signal emitting-source at described virtual coordinate system, desired location relation according to personnel's eyes on described signal emitting-source and the described motor vehicle seat calculates the coordinate information of the eyes of the personnel on the described motor vehicle seat, and is sent to described calculating unit.
Preferably, described photoinduction unit is angle of light degree sensor or incident angle prism measurer.
Preferably, described photoinduction unit also comprises:
The luminous intensity measurement unit is used to measure the incident light intensity, obtains strength information, when described strength information exceeds setting threshold measured angle of light degree information is sent to described calculating unit.
A kind of automobile shading method, the Windshield of described automobile is provided with the liquid crystal shading plate, described liquid crystal shading plate is made of at least one liquid crystal array, described liquid crystal shading plate is connected with liquid-crystal controller, described at least one liquid crystal array is when being controlled by described liquid-crystal controller, and its diaphaneity can change; This method comprises:
Determine the position of the eyes of the personnel on the described motor vehicle seat, obtain its location information in virtual coordinate system, and the incident angle of measurement light source, angle information obtained;
According to described location information and described angle information, determining needs to adjust the liquid crystal array of diaphaneity in described at least one liquid crystal array, and produces control command;
Adjust the described diaphaneity that needs the liquid crystal array of adjustment diaphaneity based on described control command.
Preferably, the described position of determining the eyes of the personnel on the described motor vehicle seat is specially:
Face to the personnel on the described motor vehicle seat is made a video recording, and obtains face-image;
Identify the image space of the eyes of the personnel on the motor vehicle seat described in the described face-image;
Calculate the coordinate position of image space in described face-image of the eyes of the personnel on the described motor vehicle seat, described coordinate position is converted to the coordinate points or the coordinates regional of described virtual coordinate system.
Preferably, the described position of determining the eyes of the personnel on the described motor vehicle seat is specially:
Receive near the test signal in the wireless signal transmission source the personnel's on the described motor vehicle seat that are arranged at the eyes from least two positions, calculate emission angle or distance between described signal emitting-source and described at least two positions, obtain emission angle information or range information; According to the location information of described at least two positions, described emission angle information or range information, calculate the coordinate points of described signal emitting-source, calculate the coordinate information of the eyes of the personnel on the described motor vehicle seat according to the desired location relation of personnel's eyes on described signal emitting-source and the described motor vehicle seat at described virtual coordinate system.
Preferably, the incident angle of described measurement light source is specially:
Adopting the incident angle of angle of light degree sensor or incident angle prism measurer measuring light, and measure light intensity, obtain intensity signal, is effective with measured angle of light degree information setting when described intensity signal surpasses setting threshold.
Present automobile can't be avoided the stimulation of light to the navigating mate eyes, the potential safety hazard that has vehicle drive, the embodiment of the invention is by being provided with the controlled liquid crystal of color and luster on vehicle glass, automatically take advantage of personnel's eyes to position to seats such as chaufeurs by registration device, incident angle by the Photoinduction device testing light source, thereby determine to shine and sit the incident area of taking advantage of personnel's eyes, adjust the arrangement angle of the liquid crystal array in the described zone by controller, make this regional liquid crystal light tight, thereby avoided light automobile to be sat the stimulation of taking advantage of personnel's eyes.Because the light proof zone only is the zone of incident light irradiation human eye, therefore area that should the zone is less, described liquid crystal is arranged on the vehicle glass, perhaps, vehicle glass or its part are made by described liquid crystal, apart from navigating mate certain distance is arranged, so little is regional light tight, the object in this back, zone one little short range, light tight zone can not cause any visual field to disturb to chaufeur, thereby guaranteed the safety of vehicle drive better, increased and sat the traveling comfort of taking advantage of personnel.
Description of drawings
Fig. 1 is the composition structural representation of diaphragm system in the embodiment of the invention;
Fig. 2 is the composition structural representation of automobile shading system in the embodiment of the invention;
Fig. 3 is a kind of composition structural representation of the registration device of automobile shading system in the embodiment of the invention;
Fig. 4 is that the another kind of the registration device of automobile shading system in the embodiment of the invention is formed structural representation;
Fig. 5 is the diagram of circuit of automobile shading method in the embodiment of the invention.
The specific embodiment
Describe the present invention below in conjunction with accompanying drawing.
Fig. 1 is the composition structural representation of diaphragm system in the embodiment of the invention, as shown in Figure 1, the diaphragm system of the embodiment of the invention comprises liquid crystal shading plate 1, liquid-crystal controller 2 and luminous intensity measurement unit 3, wherein, described liquid crystal shading plate is made of at least one liquid crystal array, described liquid crystal shading plate is connected with liquid-crystal controller, and described at least one liquid crystal array is subjected to described liquid-crystal controller control and presents different pellucidities.Liquid crystal array includes and is arranged on interelectrode layer of liquid crystal molecule, layer of liquid crystal molecule is provided with between two mutually perpendicular polarization filters of direction of polarization, if there is not interelectrode liquid crystal, light is promptly stopped by another filter after by one of them filter, and by controlling the electrode of liquid crystal, direction of polarization rotation can be made, thereby another filter can be passed through by the light behind one of them filter.This be because, liquid crystal molecule is very easily to be subjected to extra electric field to produce induction field, liquid crystal molecule is brought out induced charge and produces static torsion by electrostatic field, liquid crystal molecule rotation is originally arranged to change, therefore also change rotation amplitude by light, change certain angle, thereby can pass through the polarization filter.And if liquid crystal molecule is broken up fully, the direction of polarization of the light by filter will be vertical fully with second polaroid, and light will be blocked fully.Therefore, by the electrode control of 2 pairs of liquid crystal arrays of liquid-crystal controller, may command liquid crystal shading plate 1 presents transparent, translucent or opaque state.Described luminous intensity measurement unit is used to measure the incident light intensity of described liquid crystal shading plate, obtains strength information; Described liquid-crystal controller is adjusted described at least one liquid crystal array of described liquid crystal shading plate according to the incident light intensity of described liquid crystal shading plate, makes it present cooresponding pellucidity.The luminous intensity measurement unit is sent to described liquid-crystal controller with the strength information of its measurement, described liquid-crystal controller is determined the magnitude of voltage that liquid crystal array should be adjusted in the described liquid crystal shading plate according to measured intensity signal, thereby makes described liquid crystal shading plate present cooresponding pellucidity.
As a kind of realization means, luminous intensity measurement unit 3 has a plurality of, in the described liquid crystal shading plate one or some liquid crystal arrays are corresponding with a luminous intensity measurement unit 3 respectively, described liquid-crystal controller is determined its pairing liquid crystal array according to each luminous intensity measurement unit 3, according to each luminous intensity measurement unit 3 measured light intensity adjust its magnitude of voltage of corresponding liquid crystal array, thereby make each zone of described liquid crystal shading plate present different pellucidities.
The glass of the alternative room of the diaphragm system of embodiment of the invention window, glass roof, glass for vehicle window, automobile skylight glass etc., to adjust its diaphaneity according to light intensity, thereby realize the purpose of automatic shading, the light intensity that assurance enters the liquid crystal shading plate remains on certain level, increases the comfort level of people's life.
Below, further specify the diaphragm system of the embodiment of the invention by a concrete application example.
Fig. 2 is the composition structural representation of automobile shading system in the embodiment of the invention, as shown in Figure 2, the automobile shading system of the embodiment of the invention comprises liquid crystal shading plate 10, liquid-crystal controller 11, registration device 12, photoinduction unit 13 and calculating unit 14, wherein, described liquid crystal shading plate 10 is made of at least one liquid crystal array, described liquid crystal shading plate 10 is connected with liquid-crystal controller 11, and described at least one liquid crystal array is when being controlled by described liquid-crystal controller 11, and its pellucidity can change.Liquid crystal shading plate 10 can be arranged on the Windshield of automobile, perhaps directly substitutes vehicle glass.Registration device 12 is used for determining the eye position of the personnel on the described motor vehicle seat.Registration device 12 is mainly used to locate automobile and sits the eye position information, particularly driver eye location information of taking advantage of personnel, thereby determines whether whether light can shine the eyes of chaufeur, influence its normal driving vehicle.Photoinduction unit 13 is used for the incident angle of measurement light source, obtains angle information.Calculating unit 14 is connected respectively with described registration device 12, photoinduction unit 13, according to the position of the eyes of the personnel on the described motor vehicle seat, the incident angle of described light source, when calculating the personnel of described light source irradiation to described motor vehicle seat eyes by the zone on the described liquid crystal shading plate, calculate the liquid crystal array that covers described zone, send control command to described liquid-crystal controller, make the liquid crystal array that has covered described zone at least be rendered as opaque state.
As a kind of realization means, as shown in Figure 3, a kind of composition structural representation for the registration device of automobile shading system in the embodiment of the invention, registration device 12 comprises at least one camera 120, diagnosis unit 121 and positioning unit 122, wherein, camera 120 is fixed in place, a certain fixed position on the described automobile, is used for the face of the personnel on the described motor vehicle seat is made a video recording, and obtains facial image information.Diagnosis unit 121 are used for identifying the image space of the described personnel's that absorbed face-image personnel eyes.Positioning unit 122 is used for calculating the coordinate position of the image space of described personnel's eyes in described facial image information, and described coordinate position is converted to the coordinate points or the coordinates regional of virtual coordinate system, and is sent to described calculating unit 14.Camera 120 can be arranged on the top of automobile in oblique the place ahead of chaufeur head, apart from the certain position of chaufeur head, during the driver's eyes of location, need a camera at least, at this moment, set the centre that chaufeur is positioned at the driver's seat, after camera 120 photographs the face-image of chaufeur, identify the position at eyes place by diagnosis unit 121, identification can be carried out based on the color of face, about the recognition technology of eyes in the image, be unusual proven technique, repeat no more here.After determining the position of eyes in image, positioning unit 122 is according to the driver's eyes position in the view-finder, this position is converted to the coordinate figure of driver's eyes in virtual coordinate system, can or a tester can be set at vehicle seat by the position that camera is taken, by the definite chaufeur of imaging size of tester and the distance between the camera 120, because the position of camera is fixed, set chaufeur again and be positioned at vehicle seat central authorities, therefore, can determine the location information of eyes in the compartment system of axes of chaufeur by the simple mathematical computing.Among the present invention, need set up a unified virtual coordinate system in advance, its initial point can be provided with arbitrarily, and the information of this virtual coordinate system all has storage in positioning unit 122 and calculating unit 14.
If camera is more than 2 or 2, then discern the position at the driver's eyes place in the graphicinformation of taking the photograph one by one by diagnosis unit 121, by the distance between chaufeur and each camera, conversion can be determined coordinate figure or the coordinates regional of driver's eyes in virtual coordinate system through mathematics.
After obtaining the coordinate information of driver's eyes, be sent to calculating unit 14 and get final product.
As a kind of realization means, as shown in Figure 4, for the another kind of the registration device of automobile shading system in the embodiment of the invention is formed structural representation, registration device 12 comprises signal emitting-source 125, at least two signal receiving units 126 and positioning units 127, wherein, signal emitting-source 125 is arranged near the eyes of personnel on the described motor vehicle seat, is used to launch the wireless test signal.At least two signal receiving units 126 are fixedly set on the automobile, be used for the described wireless test signal that receives, calculate emission angle or distance between described signal emitting-source and described at least two signal receiving units according to the described test signal that is received, obtain emission angle information or range information.Positioning unit 127 is used for according to the location information of described two signal receiving units 126, described emission angle information or range information at least, calculate the coordinate points of described signal emitting-source 125 at described virtual coordinate system, desired location relation according to personnel's eyes on described signal emitting-source 125 and the described motor vehicle seat calculates the coordinate information of the eyes of the personnel on the described motor vehicle seat, and is sent to described calculating unit 14.Signal emitting-source 125 can be any wireless launcher; Signal receiving unit 126 can be a signal receiver arbitrarily, can transmitting of received signal emissive source 125 get final product, and signal receiving unit 126 can calculate distance or the angle between signal emitting-source 125 and the signal receiving unit 126.Positioning unit 127 can accurately be located driver eye location by institute's calculated distance and angle.Need to prove, when signal emitting-source 125 is arranged on the described motor vehicle seat, remain based on the position between signal emitting-source 125 and the driver's eyes and fix, determine the position of signal emitting-source 125 after, the position that is easy to extrapolate driver's eyes.Also signal emitting-source 125 can be provided with the mode of putting flexibly, it directly be placed near the driver's eyes, as be arranged on the special nosepiece frame, determine the position of signal emitting-source 125 and promptly determined driver eye location.
Need to prove that above-mentioned driver's eyes identification of position is based on still that unified virtual coordinate system carries out.
In the embodiment of the invention, photoinduction unit 13 can be realized by angle of light degree sensor or incident angle prism measurer.The measurement technique of angle of light degree is a mature technology, and pertinent instruments can be buied by commercially available mode, no longer it is given unnecessary details.Photoinduction unit 13 also comprises the luminous intensity measurement unit, is used to measure the incident light intensity, obtains strength information, when strength information exceeds setting threshold measured angle of light degree information is sent to described calculating unit 14.In order to make the embodiment of the invention have more practicality, the luminous intensity measurement unit need be measured the incident light intensity, when only exceeding certain threshold value, Cai the angle information of the incident light that photoinduction unit 13 is measured is sent to described calculating unit 14.
14 of calculating units are according to the incident angle of outside incident light, the location information of driver's eyes, calculating shine in driver's eyes the zone by Windshield, thereby the corresponding region that is arranged on the liquid crystal shading plate 10 on the Windshield is set to opaque state, thereby cover the irradiation of high light, guarantee the drive safety of chaufeur driver's eyes.When calculating unit 14 is determined outside strong illumination less than driver's eyes, then do not do any processing.
Need to prove that the opaque state described in the embodiment of the invention is meant that liquid crystal shading plate 10 is subjected to the voltage control of liquid-crystal controller 11 and liquid crystal array overwhelming majority incident light can not be seen through, and is not light tight fully.The present invention can impose cooresponding voltage to the corresponding liquid crystal array according to the measured incident intensity in luminous intensity measurement unit, make the corresponding region of liquid crystal shading plate 10 present different pellucidities, guarantee that driver's eyes not irriate the time, also provides better view for chaufeur.
Below how explanation embodiment of the invention automobile shading method realizes, need to prove, the prerequisite that present embodiment is realized is that each unit shown in Figure 2 is installed in the described automobile, and sets up a unified virtual coordinate system in registration device 12 and calculating unit 14.The Windshield of automobile is provided with the liquid crystal shading plate, perhaps Windshield is substituted by the liquid crystal shading plate, described liquid crystal shading plate is made of at least one liquid crystal array, described liquid crystal shading plate is connected with liquid-crystal controller, and described at least one liquid crystal array is subjected to described liquid-crystal controller control and presents different pellucidities.
Fig. 5 is the diagram of circuit of automobile shading method in the embodiment of the invention, and as shown in Figure 5, the automobile shading method may further comprise the steps in the embodiment of the invention:
Step 401: determine the position of the eyes of the personnel on the described motor vehicle seat, obtain its location information in virtual coordinate system, and the incident angle of measurement light source, obtain angle information.
Take advantage of the particularly localization method of driver's eyes of personnel about the automobile seat, can adopt aforesaid camera localization method: the face to the personnel on the described motor vehicle seat is made a video recording; Identify the image space of personnel's eyes in the described personnel's that absorbed the face-image; Calculate the coordinate position of image space in described personnel's face-image of described personnel's eyes, described coordinate position is converted to described automobile internal coordinate point or coordinates regional.Specifically can be referring to the associated description of accompanying drawing 3.
Take advantage of the particularly localization method of driver's eyes of personnel about the automobile seat, can adopt aforesaid signal source localization method: according near the emission angle of the test signal in the wireless signal transmission source eyes of personnel on the received described motor vehicle seat or and signal receiver between distance, calculate described signal emitting-source at described automobile internal coordinate point, estimate coordinate information according to the possible position of personnel's eyes on described signal emitting-source and the described motor vehicle seat.
About the incident angle of outside high light, can measure by the angle of light degree sensor or the incident angle prism measurer of special use.
Step 402: according to described location information and described angle information, determining needs to adjust the liquid crystal array of diaphaneity in described at least one liquid crystal array, and produces control command; Adjust the described diaphaneity that needs the liquid crystal array of adjustment diaphaneity based on described control command.
When calculating the personnel of described light source irradiation to described motor vehicle seat eyes by the zone on the described liquid crystal shading plate, calculate the liquid crystal array that covers described zone, send control command to described liquid-crystal controller, make the liquid crystal array that has covered described zone at least be rendered as opaque state.
Determine outside strong illumination behind the zone of driver's eyes, be set to opaque state by liquid-crystal controller 11 these zones and get final product.Zone of opacity has certain distance apart from navigating mate, and so little zone is light tight fully, and the object in the little short range after this zone, light tight zone can not cause any visual field to disturb to chaufeur.
Opaque state described in the embodiment of the invention is meant that most incident lights can not see through, and not all incident light can not see through fully.The present invention can be according to incident intensity and the liquid crystal array of determined lightproof area is imposed cooresponding voltage, make determined lightproof area present different pellucidities, guarantee that driver's eyes not irriate the time, also provides better view for chaufeur.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (11)
1, a kind of diaphragm system is characterized in that, comprising:
The liquid crystal shading plate is made of at least one liquid crystal array;
Liquid-crystal controller is connected with described liquid crystal shading plate, and described at least one liquid crystal array is when being controlled by described liquid-crystal controller, and its diaphaneity can change.
2, system according to claim 1 is characterized in that, described system also comprises:
The luminous intensity measurement unit is used to measure the incident light intensity of described liquid crystal shading plate, obtains strength information;
Described liquid-crystal controller is adjusted described at least one liquid crystal array of described liquid crystal shading plate according to described intensity signal, makes it present cooresponding pellucidity.
3, a kind of automobile shading system is characterized in that, comprising:
The liquid crystal shading plate is arranged on the Windshield of automobile, and described liquid crystal shading plate is made of at least one liquid crystal array;
Liquid-crystal controller is connected with described liquid crystal shading plate, and described at least one liquid crystal array is when being controlled by described liquid-crystal controller, and its diaphaneity can change;
Registration device is used for determining according to a virtual coordinate system position of the eyes of the personnel on the described motor vehicle seat, obtains a location information;
The photoinduction unit is used for the incident angle of measurement light source, obtains angle information;
Calculating unit is connected respectively with described registration device, photoinduction unit, determines that according to described location information and described angle information needs are adjusted the liquid crystal array of diaphaneity in described at least one liquid crystal array, and produces control command;
Wherein, described liquid-crystal controller is adjusted the described diaphaneity that needs the liquid crystal array of adjustment diaphaneity based on described control command after receiving described control command.
4, system according to claim 3 is characterized in that, described registration device comprises:
At least one camera is fixed in the described automobile, is used for the face of the personnel on the described motor vehicle seat is made a video recording, and obtains face-image;
Diagnosis unit are used to identify the image space of the eyes of the personnel on the motor vehicle seat described in the described face-image;
Positioning unit, the image space of eyes that is used for the personnel on the described motor vehicle seat that calculate is at the coordinate position of described face-image, described coordinate position is converted to the coordinate points or the coordinates regional of described virtual coordinate system, and described coordinate points or coordinates regional information are sent to described calculating unit.
5, system according to claim 3 is characterized in that, described registration device comprises:
Signal emitting-source is arranged near the eyes of the personnel on the described motor vehicle seat, is used to launch the wireless test signal;
At least two signal receiving units, be fixedly set on the described automobile, be used to receive described wireless test signal, calculate emission angle or distance between described signal emitting-source and described at least two signal receiving units according to the described test signal that is received, obtain emission angle information or range information;
Positioning unit, be connected with described at least two signal receiving units, be used for the location information according to described at least two signal receiving units, described emission angle information or range information, calculate the coordinate points of described signal emitting-source at described virtual coordinate system, desired location relation according to personnel's eyes on described signal emitting-source and the described motor vehicle seat calculates the coordinate information of the eyes of the personnel on the described motor vehicle seat, and is sent to described calculating unit.
6, system according to claim 3 is characterized in that, described photoinduction unit is angle of light degree sensor or incident angle prism measurer.
7, system according to claim 6 is characterized in that, described photoinduction unit also comprises:
The luminous intensity measurement unit is used to measure the incident light intensity, obtains strength information, when described strength information exceeds setting threshold measured angle of light degree information is sent to described calculating unit.
8, a kind of automobile shading method, it is characterized in that, the Windshield of described automobile is provided with the liquid crystal shading plate, described liquid crystal shading plate is made of at least one liquid crystal array, described liquid crystal shading plate is connected with liquid-crystal controller, described at least one liquid crystal array is when being controlled by described liquid-crystal controller, and its diaphaneity can change; This method comprises:
Determine the position of the eyes of the personnel on the described motor vehicle seat, obtain its location information in virtual coordinate system, and the incident angle of measurement light source, angle information obtained;
According to described location information and described angle information, determining needs to adjust the liquid crystal array of diaphaneity in described at least one liquid crystal array, and produces control command;
Adjust the described diaphaneity that needs the liquid crystal array of adjustment diaphaneity based on described control command.
9, method according to claim 8 is characterized in that, the described position of determining the eyes of the personnel on the described motor vehicle seat is specially:
Face to the personnel on the described motor vehicle seat is made a video recording, and obtains face-image;
Identify the image space of the eyes of the personnel on the motor vehicle seat described in the described face-image;
Calculate the coordinate position of image space in described face-image of the eyes of the personnel on the described motor vehicle seat, described coordinate position is converted to the coordinate points or the coordinates regional of described virtual coordinate system.
10, method according to claim 8 is characterized in that, the described position of determining the eyes of the personnel on the described motor vehicle seat is specially:
Receive near the test signal in the wireless signal transmission source the personnel's on the described motor vehicle seat that are arranged at the eyes from least two positions, calculate emission angle or distance between described signal emitting-source and described at least two positions, obtain emission angle information or range information; According to the location information of described at least two positions, described emission angle information or range information, calculate the coordinate points of described signal emitting-source, calculate the coordinate information of the eyes of the personnel on the described motor vehicle seat according to the desired location relation of personnel's eyes on described signal emitting-source and the described motor vehicle seat at described virtual coordinate system.
11, method according to claim 8 is characterized in that, the incident angle of described measurement light source is specially:
Adopting the incident angle of angle of light degree sensor or incident angle prism measurer measuring light, and measure light intensity, obtain intensity signal, is effective with measured angle of light degree information setting when described intensity signal surpasses setting threshold.
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| CN2008101151361A CN101607520B (en) | 2008-06-17 | 2008-06-17 | Shading system, automobile shading system and method |
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| CN2008101151361A CN101607520B (en) | 2008-06-17 | 2008-06-17 | Shading system, automobile shading system and method |
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Cited By (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923237A (en) * | 2010-04-24 | 2010-12-22 | 牛培行 | Liquid crystal sun shield |
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| CN102700385A (en) * | 2012-06-21 | 2012-10-03 | 王普 | Device and method for preventing glare during vehicle crossing |
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