CN113479042A

CN113479042A - Intelligent anti-glare system

Info

Publication number: CN113479042A
Application number: CN202110682755.4A
Authority: CN
Inventors: 黄钰淇
Original assignee: Huang Chuzhen
Current assignee: Huang Chuzhen
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-10-08
Also published as: CN115489275A

Abstract

The invention relates to the technical field of anti-glare, and discloses an intelligent anti-glare system which comprises a controller, a first camera, a second camera and an anti-glare film, wherein the first camera is used for shooting a scene image in front of a vehicle in real time; the anti-dazzle film comprises a substrate and a plurality of electrically controlled shading units arranged in a dot matrix manner and arranged on the substrate, wherein the light transmittance and the polarization rate of the shading units are adjustable; the controller is used for receiving the scene image shot by the first camera and the human eye image shot by the second camera, identifying the position of a strong light area in the scene image, calculating coordinate values of the shading units penetrating through the anti-dazzle film when strong light is incident into human eyes according to the position of the human eyes, and adjusting the light transmittance and the polarization rate of the shading units at corresponding positions according to the coordinate values. The invention can change the light transmittance and the polarization rate of the region needing anti-dazzle without influencing the light transmittance and the polarization rate of other regions needing no anti-dazzle.

Description

Intelligent anti-glare system

Technical Field

The invention relates to the technical field of anti-glare, in particular to an intelligent anti-glare system.

Background

In the aspect of anti-glare, the main use scenes comprise automobile driving, various luminous welding, various occasions where strong light (such as sun, high-temperature smelting furnace, fishing, gas cutting and the like) can be seen directly and the like; the method similar to sunglasses or the method for changing the light transmittance of the whole front windshield is mostly adopted for the anti-dazzle of automobile driving, but the light transmittance of the method is fixed or the light transmittance of the whole vision field is uniform, so that the anti-dazzle is not flexible enough, and when a certain part is subjected to anti-dazzle, the other part which does not need to be anti-dazzle is often temporarily not seen clearly, so that the anti-dazzle technical effect is poor, and certain potential safety hazard is caused.

Disclosure of Invention

The purpose of the invention is: the utility model provides an intelligence anti-dazzle system can change luminousness and the polarization rate that need anti-dazzle light region pertinence, does not influence luminousness and the polarization rate in other regions that do not need anti-dazzle, can improve driver's field of vision definition and personnel's comfort level in being applied to the car to improve the security that driver drove.

In order to achieve the above object, the present invention provides an intelligent anti-glare system, which includes a controller, a first camera, a second camera and an anti-glare film, wherein the controller is electrically connected to the first camera, the second camera and the anti-glare film respectively;

the first camera is used for shooting a scene image in front of the vehicle in real time;

the second camera is used for shooting the human eye image of the driver;

the anti-dazzle film comprises a substrate and a plurality of electrically controlled shading units arranged in a dot matrix manner and arranged on the substrate, wherein the light transmittance and the polarization rate of the shading units are adjustable;

the controller is used for receiving the scene image shot by the first camera and the human eye image shot by the second camera, identifying the position of a highlight area in the scene image, calculating a coordinate value of a shading unit which penetrates through the anti-dazzle film when highlight is shot into human eyes according to the position of the human eyes, and adjusting the light transmittance and the polarization rate of the shading unit at the corresponding position according to the coordinate value.

Further, the anti-dazzle film is used for being attached to the surface of the transparent plate or arranged in an interlayer of the transparent plate.

Further, the anti-dazzle film adopts a dot matrix type liquid crystal panel, and the shading units are liquid crystal molecules.

Further, the anti-glare film is a double-layer cross-polarization electro-polarization liquid crystal film, and when both layers of liquid crystals of the anti-glare film are fully polarized, the light transmittance of the anti-glare film is 0%.

Further, the antiglare film further comprises a head-up display module HUD including a plurality of electrically controlled light emitting units arranged in a lattice on the substrate.

Further, the light emitting unit is an OLED, a QLED, a Micro LED or a Mini LED.

Further, the light emitting unit and the light shielding unit are located in the same layer on the substrate.

Further, the light emitting unit and the light shielding unit are located in different layers on the substrate, and the light emitting unit is closer to human eyes relative to the light shielding unit.

Further, the intelligent anti-glare system further comprises a wireless communication module electrically connected with the controller.

Furthermore, the intelligent anti-glare system further comprises a display screen electrically connected with the controller.

Compared with the prior art, the intelligent anti-dazzle system provided by the technical scheme has the beneficial effects that: (1) above-mentioned scheme is through the scene image of shooting vehicle the place ahead and the people's eye image of driver, the position of the highlight region in the discernment scene image, and the coordinate value that passes the shading unit on the anti-dazzle membrane when people's eye is penetrated into to the highlight according to people's eye position calculation highlight, the luminousness and the polarization rate of the shading unit that corresponds the position are adjusted according to the coordinate value, and then realized the shading to the partial region of highlight and adjusted, do not influence the sight in other regions, passenger's field of vision definition has been guaranteed, and the polarization rate has still been adjusted when changing the luminousness, can increase the definition and the comfort level of driver's sight, thereby improve the security. (2) The polarization rate and the light transmittance of the non-anti-dazzle light region can be correspondingly adjusted, so that the whole light intensity and the contrast of the visual field can be adjusted, and the definition and the comfort of the visual field are improved.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent anti-glare system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of the operation of the intelligent anti-glare system according to the embodiment of the present invention.

The system comprises a controller 1, a first camera 2, a second camera 3, an anti-dazzle film 4, a head-up display module HUD5, a wireless communication module 6, a display screen 7, an anti-dazzle area 8, a front windshield 9, an anti-dazzle film side lead 10, an anti-dazzle film lower side lead 11, a highlight area 12 and a driver 13.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "central", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., used herein are used in the orientation or positional relationship indicated in the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the present invention can be understood as specific cases by those skilled in the art.

As shown in fig. 1 and 2, an embodiment of the present invention provides an intelligent anti-glare system, which includes a controller 1, a first camera 2, a second camera 3, and an anti-glare film 4, wherein the controller 1 is electrically connected to the first camera 2, the second camera 3, and the anti-glare film 4, respectively;

the first camera 2 is used for shooting a scene image in front of the vehicle in real time, and the second camera 3 is used for shooting a human eye image of the driver 13; for convenient location, first camera 2, second camera 3 can be two cameras or many cameras respectively.

The anti-dazzle film 4 comprises a substrate and a plurality of electrically controlled shading units arranged in a dot matrix manner on the substrate, wherein the light transmittance and the polarization rate of the shading units are adjustable;

the controller 1 is configured to receive a scene image captured by the first camera 2 and a human eye image captured by the second camera 3, recognize a position of the highlight region 12 in the scene image, calculate a coordinate value of the light blocking unit passing through the antiglare film 4 when the highlight is incident on the human eye according to the position of the human eye, and adjust a light transmittance and a polarization rate of the light blocking unit at a corresponding position according to the coordinate value.

Based on the above scheme, through shooting the scene image in the vehicle the place ahead and driver 13's people's eye image, the position of highlight region 12 in the discernment scene image, and pass the coordinate value of the shading unit on anti-dazzle membrane 4 when calculating the highlight according to people's eye position and penetrate into people's eye, the luminousness and the polarization rate of the shading unit that corresponds the position are adjusted according to the coordinate value, and then realized adjusting to the shading of the partial region of highlight, do not influence the sight in other regions, driver's field of vision definition has been guaranteed, and still adjusted the polarization rate when changing the luminousness, can increase the definition and the comfort level of driver 13 sight, thereby improve the security.

Specifically, the coordinate value of the light shielding means to be adjusted is determined according to the coordinates of the strong light in the scene image, the coordinates of the human eye in the human eye image, and the coordinates of the point where the path of the strong light entering the human eye intersects with the antiglare film 4, and the first camera 2, the second camera 3, and the antiglare film 4 have a preset positional relationship which can be represented by coordinates.

In addition, the antiglare film 4 can not only reduce the light transmittance of the antiglare region 8 against strong light irradiation, but also improve the visibility of the antiglare region 8 and the non-antiglare region by changing the polarization ratio, because the field of view is generally clearer with polarization than without polarization at the same light transmittance, and the eyes are comfortable for a real long time, and the polarization ratio of the antiglare film is often not the light transmittance.

The anti-dazzle film 4 can be a soft film, which is attached to the surface of transparent glass (such as automobile front windshield 9) or in a glass interlayer when in use, or can be a hard sheet or a hard plate which is directly installed and used (such as an automobile anti-dazzle plate).

Specifically, the anti-dazzle membrane 4 adopts a dot matrix type liquid crystal panel, the shading units are liquid crystal molecules, the light transmittance or the polarization rate of the shading units can be controlled independently, the light transmittance and the polarization rate can also be controlled simultaneously in a combined mode, and the intelligent anti-dazzle and shading effects are achieved. The shading unit works by utilizing an electro-atomization dimming principle and an electro-polarization principle of liquid crystal, namely, an electric field is utilized to change the arrangement of liquid crystal molecules, so that the light transmittance and the polarization rate of the liquid crystal are controlled; (1) when the liquid crystal molecules are vertical to the display film, the liquid crystal molecules are completely transparent, the light transmittance is generally more than 80%, the polarization rate is 0%, and the liquid crystal molecules are transparent and shadowy; (2) when the liquid crystal molecules are parallel to the display film and the directions are the same, the liquid crystal molecules are in a full polarization state and are semitransparent, only polarized light is transmitted, the light transmittance is about 35% -50%, and at the moment, the semitransparent light also transmits the shadow; (3) when the liquid crystal molecules are in a disordered state, the liquid crystal molecules are in a foggy state, the light transmittance is generally lower than 10%, and the polarization rate is 0%, so that the liquid crystal molecules are semi-transparent but do not have shadow. The above effects (1) and (3) can be achieved by the electro-atomization dimming technique using liquid crystal, and the above effects (1) and (2) can be achieved by the electro-polarization technique using liquid crystal.

In addition, in order to control the light transmittance to 0%, the antiglare film 4 may employ a double-layer cross-polarized liquid crystal film in which the polarization directions are perpendicular to each other, and the light transmittance of the antiglare film 4 is 0% when both layers of liquid crystals of the antiglare film 4 are fully polarized.

At present, most of the market adopts the liquid crystal electro-atomization dimming anti-dazzle technology. The liquid crystal electro-atomization dimming anti-glare technology is relatively easy to implement, but the performance is not as good as the anti-glare performance of the electro-polarization film. Moreover, most of the current electroluminescent light-adjusting films on the market in China are forward light-adjusting films, the films are atomized when in a power-off state, scenery cannot penetrate through the films, but part of the films are bright, and the films are not suitable for vehicles (the vision of drivers is influenced by accidental power-off), and the reverse light-adjusting films are in a transparent state when in power-off (namely, the light transmittance is the largest, and liquid crystal molecules are vertical to the display films), so that the film is suitable for vehicles and ensures the safety of the vehicles.

In addition, as shown in fig. 1 and 2, in the present embodiment, the antiglare film 4 further includes a head-up display module HUD5, and the HUD5 includes a plurality of electrically controlled light emitting units arranged in a dot matrix on the substrate. This anti-dazzle membrane 4 can have the effect of control luminousness, polarization rate and demonstration simultaneously, plays anti-dazzle and HUD5 function, is the integration that shows anti-dazzle and HUD, can save space, reduce cost.

Specifically, as shown in fig. 2, the anti-glare and HUD functions may be linked and complementary, and when the anti-glare shading unit fully shades light (the light transmittance is 0%), the HUD is equivalent to a common display screen, and can be used for accessing the internet, playing games, watching videos, and the like, and in cooperation with car audio, a high-grade car cinema can be formed, and if the anti-glare and HUD functions are controlled to be double-sided video display, a mobile car propaganda/advertisement video can be formed. The polarization anti-dazzle is to (daytime the outer car) the suppression of highlight, can make HUD show more clearly, obvious, especially to utilizing HUD step function AR-HUD to carry out car navigation, carries out the stack with the live-action with navigation information on preceding shelves of glass 9 and shows, has good effect.

The light emitting unit can be realized by adopting OLED or Mini LED, so that the function of head-up display is achieved. The light-emitting unit and the shading unit can be positioned in the same layer on the substrate, the layer is perpendicular to the thickness direction of the substrate, the two units can be distributed according to a certain proportion, and the lattice area of the shading unit is larger than that of the light-emitting unit. Of course, the light emitting unit may also adopt other liquid crystal light emitting technologies without being limited to OLED, QLED, Micro LED or Mini LED, but all fall within the scope of the present invention.

Alternatively, the light emitting means and the light blocking means may be located in different layers on the substrate, the light emitting means being closer to the human eye than the light blocking means, the two means may be arranged in the light emitting layer and the antiglare layer, respectively, with the antiglare layer on the outside and the light emitting layer on the inside (generally, the area in which the light emitting means are arranged is smaller). The light blocking element opposite the light emitting element can function as a switch to allow the HUD5 display to change between being visible on one or both sides.

It should be noted that, when the currently used mainstream HUD technology for civil use is a projection-type HUD, that is, contents to be displayed are projected onto a screen to be displayed, the display effect of this display mode under strong light in daytime is greatly reduced, because the light-transmitting part is too glaring, the light emission of the HUD will not be clear. And the anti-dazzle membrane 4 of this embodiment because can be intelligent, subregion, smooth control luminousness to reduce the contrast in bright field and dark field in the field of vision, improve day night HUD's stability and the travelling comfort of driving greatly.

In this embodiment, as shown in fig. 2, two pairs of cameras, that is, a pair of first cameras 2 and a pair of second cameras 3, are used, so that an anti-glare point and a real-time eye position in a field of view can be more accurately located, an anti-glare region 8 is further intelligently determined, and the anti-glare pertinence and effectiveness are improved. When the antiglare point (i.e., the position of intense light) is not changed, the antiglare region 8 changes with the movement of the eye. When the eyes are relatively motionless, the anti-dazzle area 8 changes along with the movement of the position of the strong light, and the anti-dazzle precision is high.

In addition, as shown in fig. 1 and fig. 2, the anti-glare system of the present embodiment further includes a wireless communication module 6 and a touch display screen 7, which are electrically connected to the controller 1, and the anti-glare system of the present embodiment may be set after being connected to the vehicle control system through a control line, may also be set in the controller 1 and the display screen 7, and may also be set on the smart device through the wireless communication module 6 such as bluetooth, so as to ensure that the anti-glare area 8 and the display area of the HUD5 on the anti-glare film 4 are accurately matched with the user, and may also be set in a personalized manner (after storing personalized parameters) to enable different users to invoke different setting parameters.

The combination of the anti-dazzle system and the intelligent automobile is more perfect, the anti-dazzle film 4 can be directly arranged in the interlayer of the front windshield 9, a camera, a control system and the like of an original automobile can be utilized, the capital investment of the device is greatly reduced, the controllability, the usability and the entertainment of the anti-dazzle film 4 are improved, and the function of the intelligent anti-dazzle film 4 can be improved along with the OTA (over the air) upgrade of the automobile.

Specifically, as shown in fig. 2, the function of the controller 1 is assumed by the automatic driving control system of the automobile, the anti-glare film 4 is clamped in the front windshield 9, the side lead 10 and the lower side lead 11 of the anti-glare film are used for indicating that the anti-glare film 4 is a dimming and display of a two-dimensional addressing control basic unit, and the strong light region 12 in fig. 2 is used for indicating an opposite automobile high beam or a daytime sun spot when the automobile is driven at night; the anti-dazzle area 8 is a low transparency area, strong light and a driver 13 are shot according to the first camera 2 and the second camera 3, shooting signals are sent to the controller 1 for calculation and positioning, and the controller 1 controls the anti-dazzle film 4 in the front windshield 9 to reduce the light transmittance of the corresponding position or change the polarization rate of the anti-dazzle film. In general, the shape of the antiglare region 8 corresponds to the shape of the intense light region 12, and the light transmittance of the antiglare region 8 is opposite to the light intensity of the intense light, with the stronger the intense light, the lower the light transmittance.

With continued reference to fig. 2, HUD5 displays content in front of the front windshield that may include road conditions, vehicle speed, navigation, weather, news, entertainment, and other relevant parameters and content. When the driver 13 moves, the second camera 3 can capture that the position of his eyes is moving, and the controller 1 will move the low transparency area in the front rail accordingly to ensure that the eyes of the driver 13 are just not damaged or affected by the strong light. When parking, the front windshield 9 can also be used as a display screen, and at the moment, the light transmittance of the shading unit is adjusted to be the lowest so as to be free from the influence of outside light, so that the display effect is optimal, and the vehicle can be used as the largest display screen for surfing the internet, watching videos, playing games and the like. When the car has a rest, the light transmittance can be reduced, and the privacy density in the car is improved.

In addition, when the anti-dazzle system is used for monitoring squat points such as judicial departments, the whole light transmittance can be reduced, the monitoring window is opened at a proper position, and the monitoring confidentiality is improved.

To sum up, the embodiment of the invention provides an intelligent anti-glare system, which has the following beneficial effects:

1. the system of this embodiment is through intelligent control, only adjusts luminousness, polarization rate or HUD luminous display in the regional regulation that needs, does not influence the field of vision of adjacent part, improves (work or drive) security, travelling comfort. Therefore, the utility model can improve the visual field, lead the whole light transmission to be balanced and lead the eyes to be comfortable, thereby reducing the working eye fatigue. For example, the anti-glare glass is used for automobile front windshield glass, and besides anti-glare, bright light at noon can be more shady and cool, and night can be transparent.

2. The light transmittance and the polarization rate can be controlled, so that the definition of a visual field can be improved by utilizing the polarization rate under the same transmittance. The polarized anti-dazzle technology is adopted, and the definition and the comfort degree of the visual field are further improved by utilizing the characteristics of polarized light, so that the practicability of the device is stronger. The problem of in the traditional dimming technology, the liquid crystal is only changed between the atomizing state and the transparent state to influence the field of view clarity is solved.

3. Except basically anti-dazzle function, adopt intelligent image light and shade field equalization technique, improve the contrast in visual field, directly improve the comfort level of watching, make eyes focus on more, indirectly improve the definition in field of vision.

4. The anti-dazzle technology and the HUD technology are combined together to play a role in multiple functions, intensification and intellectualization, so that the functions of the system are enriched, and the manufacturing cost and the occupied space of equipment with the same function are effectively reduced; the electroluminescent technology is added for HUD display, so that the function of the anti-dazzle film 4 is enlarged, and the use scene and the applicability of the HUD function are increased (due to the anti-dazzle effect); can ensure that anti-dazzle regional 8 and HUD5 display area highly matches with the user on anti-dazzle membrane 4, can also carry out individualized setting, let different people call different setting parameters.

5. The anti-dazzle system can also be used for intelligent helmets, intelligent glasses, intelligent anti-dazzle plates, welding anti-dazzle covers, other cabs outside automobiles and other application occasions needing anti-dazzle and vision definition improvement.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent anti-dazzle system is characterized by comprising a controller, a first camera, a second camera and an anti-dazzle film, wherein the controller is respectively electrically connected with the first camera, the second camera and the anti-dazzle film;

the second camera is used for shooting the human eye image of the driver;

2. The intelligent anti-glare system according to claim 1, wherein the anti-glare film is used for being attached to the surface of the transparent plate or being provided in an interlayer of the transparent plate.

3. The intelligent anti-glare system according to claim 1, wherein the anti-glare film is a dot matrix liquid crystal panel, and the light blocking means is liquid crystal molecules.

4. The intelligent anti-glare system according to claim 1, wherein the anti-glare film is a double-layer crossed-electric-polarization liquid crystal film, and the light transmittance of the anti-glare film is 0% when both layers of liquid crystals of the anti-glare film are fully polarized.

5. The intelligent antiglare system of claim 1, wherein the antiglare film further comprises a heads up display module (HUD) comprising a plurality of electronically controlled lighting units arranged in a dot matrix on the substrate.

6. The intelligent anti-glare system according to claim 5, wherein the light emitting unit employs an OLED, a QLED, a Micro LED or a Mini LED.

7. The intelligent anti-glare system according to claim 5, wherein the light emitting means and the light blocking means are located in the same layer on the substrate.

8. The intelligent anti-glare system according to claim 5, wherein the light emitting means and the shade means are located in different layers on the substrate, the light emitting means being closer to the human eye than the shade means.

9. The intelligent anti-glare system of claim 1, further comprising a wireless communication module electrically connected to the controller.

10. The intelligent anti-glare system of claim 1, further comprising a display screen electrically connected to the controller.