CN114670609A - Photosensitive protection windshield color-changing system - Google Patents
Photosensitive protection windshield color-changing system Download PDFInfo
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- CN114670609A CN114670609A CN202110109648.2A CN202110109648A CN114670609A CN 114670609 A CN114670609 A CN 114670609A CN 202110109648 A CN202110109648 A CN 202110109648A CN 114670609 A CN114670609 A CN 114670609A
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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
- 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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Abstract
The invention provides a photosensitive protective windshield color-changing system, which is suitable for a windshield, wherein the windshield is divided into a plurality of blocks, and the windshield color-changing system comprises: a light sensing unit for obtaining a light source position and an ambient light value; the eyeball tracking unit is used for tracking and obtaining the eyeball position of the driver; the vehicle-mounted processing unit is electrically connected with the light sensing unit and the eyeball tracking unit and generates a light and shade operation instruction of a windshield block according to the light source position, the environment luminosity value and the eyeball position; and the windshield control unit is electrically connected with the windshield and the vehicle-mounted processing unit, and controls the brightness of each block on the windshield according to the brightness operation instruction of the windshield block.
Description
Technical Field
The invention relates to a photosensitive protection windshield color-changing system which can change color of a windshield in a block manner according to ambient light, an opposite light source or an irradiation light source.
Background
At present, automobiles on the market do not have light source sensing color-changing windshields, only can select additionally adhered heat-insulating paper to insulate heat, and cannot provide various heat-insulating effects, and a sun-shading or heat-insulating device structure, such as a sun-shading curtain, cannot be arranged on the front windshield of the automobile during driving, namely cannot be used during driving, cannot block light sources outside the automobile (such as automobile lamps projected by other vehicles, sunlight or street lamps … and the like) for a driver, can cause the driver to generate a glare phenomenon to further influence vision, and particularly can cause driving danger easily under the condition of high-speed driving with glare reflection.
Furthermore, the sun-shading or heat-insulating device, such as a sun-shading board, is easy to obstruct the driver's view during driving, so that the driver must adjust the view to observe the road and the coming vehicle with a distraction, and the adjustable range of the size and the position is limited, so that the driver may have a blind driving danger if the driver's view is shielded, that is, only part of the light source outside the vehicle can be obstructed for the driver during driving, and the driver may be distracted or obstruct the driver's view, thereby affecting the vision and easily causing the driving danger.
The heat insulation paper of the prior art is coated or colored, and cannot be changed due to fixed darkness, so when the color of the heat insulation paper is too dark, the glass is too dark to influence the sight, and the driving safety is endangered; on the contrary, if the heat insulation paper is not dark enough, the light cannot be blocked; thus, with limited capabilities, the insulation paper does not provide a controllable shade to the driver or block glare to oncoming traffic.
Disclosure of Invention
The invention provides a photosensitive protection windshield color-changing system, which can control sun shading or block strong light to the coming vehicle, and is used for preventing the glare phenomenon of a driver and improving the driving safety.
The invention provides a photosensitive protective windshield color-changing system, which is suitable for a windshield, wherein the windshield is divided into a plurality of blocks, and the windshield color-changing system comprises: the device comprises a light sensing unit, an eyeball tracking unit, an on-board processing unit and a windshield control unit. The vehicle-mounted processing unit is electrically connected with the windshield and the vehicle-mounted processing unit, and the windshield control unit is used for controlling the brightness of each block on the windshield according to the brightness operation instruction of the windshield block.
In an embodiment of the invention, the photochromic system of the photosensitive protection further includes a time unit electrically connected to the vehicle-mounted processing unit.
In an embodiment of the invention, if the time unit determines that the time unit is the daytime time period, the vehicle-mounted processing unit controls the windshield control unit to display the windshield in a sun-shading mode according to the windshield block light and shade operation instruction.
In an embodiment of the invention, the vehicle-mounted processing unit sets a region of the windshield adjacent to an intersection point of the connecting line between the light source position and the eyeball position and the windshield as a color-changing region.
In an embodiment of the invention, the light sensing unit is a CCD camera for a vehicle.
In an embodiment of the invention, the eye tracking unit is used for determining the gazing direction of one or more eyes of the driver and the passenger.
In an embodiment of the invention, the vehicle-mounted processing unit determines whether the ambient light level exceeds a threshold value, and determines whether to change the color of the block of the windshield according to the ambient light level.
The invention also provides a photosensitive protection windshield color-changing system, which is suitable for a windshield, the windshield is divided into a plurality of blocks, and the windshield color-changing system comprises: a light sensing unit for obtaining a light source position and an ambient light value; the eyeball tracking unit is used for tracking and obtaining the eyeball positions and the eye directions of one or more eyes of the driver and the passenger; a time unit for obtaining a time period of a driving state; the vehicle-mounted processing unit is electrically connected with the light sensing unit, the eyeball tracking unit and the time unit and generates a light and shade operation instruction of a windshield block according to the light source position, the environment luminosity value and the eyeball position; and the windshield control unit is electrically connected with the windshield and the vehicle-mounted processing unit, and controls the light and shade of each block on the windshield according to the light and shade operation instruction of the windshield block, wherein when the time unit judges the daytime period, the vehicle-mounted processing unit controls the windshield control unit to enable the windshield to display a sun-shading mode through the light and shade operation instruction of the windshield block.
The invention adopts the light-sensing structure, so the color-changing windshield can follow the lamp of the opposite vehicle according to the external environment light to adjust the brightness of the windshield, and further adjust the brightness of the windshield in a block manner, thereby effectively and properly adjusting the brightness of the windshield, preventing the glare phenomenon of a driver and improving the driving safety.
Drawings
FIG. 1 is a block diagram of the system components of the present invention.
Fig. 2A is an external view of the vehicle body in the first embodiment of the invention.
Fig. 2B is a schematic diagram of two parties meeting in the first embodiment of the present invention.
FIG. 2C is a diagram illustrating the relationship between the position of the light source and the position of the eyeball of the driver according to the first embodiment of the present invention.
FIG. 3 is a schematic view of a windshield divided into a plurality of blocks according to the present invention.
Symbolic illustration in the drawings:
a 110 light sensing unit; 120 eyeball tracking unit; 130 a microprocessor; 140 a windshield color change controller; 150-color changing windshields; 200 of a vehicle body; 210 a vehicular CCD camera; 220 an eyeball tracker; 240 windshield color change control; a 250 color shifting windshield; 250' windshield color changing zone.
Detailed Description
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
FIG. 1 is a block diagram of the system components of the present invention. In fig. 1, a photoprotected windshield color changing system adapted for use with a windshield, the windshield color changing system comprising: the device comprises a light sensing unit 110, an eyeball tracking unit 120, a microprocessor (vehicle-mounted processing unit) 130, a windshield color-changing controller 140 and a color-changing windshield 150, wherein the windshield of the color-changing windshield 150 is divided into a plurality of color-changing blocks.
The light sensing unit 110 is used for obtaining a light source position and an ambient light value, the eyeball tracking unit 120 is used for tracking and obtaining an eyeball position of a driver, the microprocessor (vehicle-mounted processing unit) 130 is electrically connected with the light sensing unit 110 and the eyeball tracking unit 120 and generates a light and shade operation instruction of a windshield block according to the light source position, the ambient light value and the eyeball position, the windshield color-changing controller 140 is electrically connected with the color-changing windshield 150 and the microprocessor 130, and the windshield color-changing controller 140 controls the light and shade of each color-changing block of the color-changing windshield 150 according to the light and shade operation instruction of the windshield block.
In this embodiment, the photosensitive windshield color-changing system further includes a time unit electrically connected to the microprocessor 130.
In the present embodiment, the microprocessor 130 is an on-board processing unit, and sets the area of the windshield adjacent to the intersection point of the virtual connecting line of the light source position and the eyeball position and the windshield as the color-changing area.
In this embodiment, the photo sensing unit is a CCD camera for a vehicle.
In the present embodiment, the eye tracking unit is used for determining the gazing direction of one or more eyes of the driver and the passenger.
In this embodiment, the microprocessor determines whether the ambient light level exceeds a threshold, and determines whether to change the color of the blocks of the windshield according to the ambient light level.
Referring to fig. 2A, fig. 2A is an external view of a vehicle body according to a first embodiment of the present invention. In fig. 2A, it can be known that if a common sun visor or other sun-shading devices for vehicles are used, there is a threat to driving safety, and a sun visor cannot be installed on a front windshield of a vehicle to block the irradiation of strong light during driving, so that there is no available sun-shading device that can effectively block the light source outside the vehicle (such as a lamp, sunlight or a street lamp … projected by other vehicles) for a driver when the vehicle is irradiated by strong light outside the vehicle.
In the present invention, firstly, the CCD camera 210 and the eyeball tracker 220 commonly used in the vehicle body 200 are used as the source basis of the operation parameters for the brightness control of the main glass blocks of the present invention, mainly because most of the light sources that usually affect the driving sight of the driver are from the direction of the windshield, i.e. the sight direction of the driver, therefore, under the premise that the light rays that affect the driver are effectively shielded and the driving of the driver is not affected, the factor that needs to be considered is to shield the illuminance of the light sources from the sight direction of the driver to the extent that the eyes of the driver can be visually acceptable.
The CCD camera 210 for a vehicle is an integrated circuit having a plurality of capacitors arranged in order thereon, which senses light and converts an image into a digital signal, and the CCD including pixels arranged in a lattice shape is applied to a digital camera, an optical scanner, and a photosensitive element of a video camera. The light efficiency can reach 70% (70% of the incident light can be captured), so that after the image acquired by the vehicular CCD camera 210 is imaged on the surface of the capacitor array through the lens, charges with different intensities are formed on each capacitor unit according to the intensity of the brightness. The planar CCD used by the camera captures an entire image at a time, or captures a square area from it. Once the exposure is completed, the control circuit will transfer the charge on the capacitor unit to an adjacent and electrically connected vehicle-mounted processing unit (MCU).
The Eye tracker 220 mainly uses Eye Tracking (Eye Tracking) technology, which is to track the movement of the Eye by measuring the position of the fixation point of the Eye or the movement of the Eye relative to the head. The eye tracker is a device capable of tracking and measuring eyeball position and eyeball motion information, and is widely applied to researches of visual systems, psychology and cognitive linguistics. There are several methods for eye tracking, and the most common non-invasive method is to acquire the position of the eye by using an image capturing device. Invasive means include embedding eye movement measurement coils in the eye or tracing an electrooculogram using microelectrodes. The general eyeball tracking technology has similar related technical principles, and the general principles are as follows:
1. actively projecting beams such as infrared rays and the like to the iris to extract features;
2. tracking according to the characteristic changes of the eyeballs and the eyeballs periphery;
3. tracking according to the change of the iris angle;
these three main categories.
In addition to the vehicle CCD camera 210 and the eye tracker 220, which are separately installed, the two are mainly used for analyzing the illuminance of the light source and the sight line of the eye position of the driver by using an image capturing technique, so that the two can be further directly integrated into a whole, and the lens of the vehicle CCD camera 210 faces the outside of the vehicle and the lens of the eye tracker 220 faces the inside of the vehicle. The color-changing windshield 250 with a plurality of color-changing zones is divided into a plurality of color-changing areas, generally speaking, the zones are not obvious as shown in the figures, and the parts of the figures are provided with obvious zone boundary lines for convenience of explanation.
Referring to fig. 2B, fig. 2B is a schematic diagram illustrating a meeting between two parties according to the first embodiment of the present invention. When a driver is driving and the vehicle body 200 meets an oncoming vehicle, the CCD camera 210 for the vehicle is used to obtain the light source position of the oncoming vehicle, the illuminance on the color-changing windshield 250 of the vehicle body 200, and the ambient illuminance value of the surrounding environment where the vehicle body 200 is currently located.
It should be noted that if the time unit determines that the time period is the daytime period and the ambient illuminance value received by the vehicular CCD camera 210 is higher than a threshold value, the vehicle-mounted processing unit makes the color-changeable windshield 250 to be in a sun-shading mode through the windshield color-changing controller 240, but if there is strong projection light exceeding the preset illuminance threshold value in the sun-shading mode, the vehicle-mounted processing unit (MCU) still makes the darkness of the windshield block where the strong projection light intersects the driver's field of view under the safe driving range adjusted to be darker than that in the sun-shading mode according to the light source of the strong projection light and the driver's field of view, and certainly, if the time period is not the daytime strong sunlight irradiation, the color-changeable windshield 250 is in a general mode.
The eyeball tracker 220 is used to track and obtain the eyeball position and eyeball gaze direction of one or more eyes of the driver and the passenger during the two-vehicle intersection, i.e. the eyeball tracker 220 obtains the visual field range of the driver according to the characteristics of the eyeball and the periphery of the eyeball, and generally, the visual field of the eyes is about 95 degrees outward, 60 degrees inward, 60 degrees upward and 75 degrees downward except the connection line between the eyeball of the driver and the light source. The non-photosensitive or blind spot of the optic nerve is located 12-15 deg. horizontally down 1.5 deg. to the temple, approximately 7.5 deg. high and 5.5 deg. wide, and serves as the line of sight for one or more of the driver's and passenger's eyes.
At this time, after the image outside the vehicle body 200 is imaged on the surface of the CCD capacitor array through the lens of the vehicular CCD camera 210, charges with different intensities are formed on each capacitor unit according to the intensity of the brightness, the control circuit transfers the charges on the capacitor units to the adjacent vehicle-mounted processing unit (MCU), so as to analyze the intensity of the illumination area, generally speaking, the illumination area irradiates the vehicle lights of the vehicle, the light intensity of the aperture is from outside to inside, and when the illumination intensity analyzed by the vehicle-mounted processing unit (MCU) exceeds a threshold value, the intersection of the illumination area and the windshield in the range is marked as a warning area to be shielded.
The vehicle-mounted processing unit generates a light and shade operation instruction of the color-changing block of the windshield according to the light source position of the lamp of the oncoming vehicle, the illumination irradiated on the color-changing windshield 250 of the vehicle body 200, the environment illumination value of the environment, the eyeball position of one or more eyes of the driver and the passenger and the gaze direction of the eyeball, when the windshield color-changing controller 240 receives the light and shade operation message of the designated color-changing block sent by the vehicle-mounted processing unit, the color-changing block of the color-changing windshield 250 correspondingly generates the light and shade change, or further, after the eyeball position is obtained, the intersection of the sight range of the driver and the warning area to be shielded (those blocks intersected on the windshield) is analyzed according to the visual field range of the driver, the vehicle-mounted processing unit (MCU) generates the operation instruction according to those block positions intersected on the windshield, and controlling the windshield color-changing controller 240 to dim the colors of the windshield blocks at the intersection to shield the strong lights of the oncoming vehicles.
Taking this embodiment as an example, as shown in fig. 2B, the position of the light source of the oncoming car light, the illuminance on the color-changeable windshield 250 of the car body 200, the ambient illuminance value of the environment, and the positions of the color-changeable windshield 250 corresponding to the eyeball positions of one or more eyes of the driver and the passenger and the direction in which the eyeballs watch are located in the color-changeable windshield area 250' (indicated by a bold frame in the figure).
To further explain, referring to fig. 2C, during a meeting, the CCD camera 210 for a vehicle is used to obtain the light source position of the lights facing the oncoming vehicle, the illumination irradiated on the color-changing windshield 250 of the vehicle 200 and the ambient illumination value of the surrounding environment where the vehicle 200 is currently located, and the eyeball tracker 220 is used to track and obtain the eyeball position and the eyeball gazing direction of the driver.
The vehicle-mounted processing unit generates a windshield block light and shade operation instruction according to the light source position of the opposite coming vehicle lamp, the illumination irradiated on the color-changing windshield 250 of the vehicle body 200, the environment illumination value of the environment, the eyeball position of the driver and the watching direction of the eyeball, and finally, the windshield color-changing controller 240 generates color change according to an intersection line (virtual connecting line) of the light source position of the opposite coming vehicle lamp and the watching direction of the eyeball of the driver and a block adjacent to an intersection point of the color-changing windshield 250, so that the phenomenon that the driver generates glare due to the light of the opposite coming vehicle is prevented, and the driving safety is improved.
The color change of the color-changing block of the windshield means that the glass on the block is darkened, but the darkening degree of the color-changing block is darkened to different degrees according to the ambient illuminance value, and importantly, the darkening degree can be maintained within a range which does not affect the sight line of the driver so as to maintain the driving safety of the driver.
Referring to fig. 3, fig. 3 is a schematic view of a windshield of the present invention divided into a plurality of color-changing zones. In fig. 3, the color-changing windshield 250 with a plurality of blocks is divided into a plurality of color-changing areas, generally, the blocks are not so obvious as shown in the figure, and the figure part has obvious block boundary lines for convenience of description.
In the present invention, the main point is that the position of the eyeball of one or more eyes of the driver and the passenger and the position of the color-changing windshield 250 corresponding to the direction the eyeball gazes are located in the color-changing windshield block 250 ', if the height of the driver is higher, the position of the color-changing windshield 250 in the color-changing windshield block 250 ' can be G, H, K, L blocks in the figure, and if the height of the passenger in the passenger seat is smaller, the position of the color-changing windshield 250 in the color-changing windshield block 250 ' can be I, J blocks in the figure, the color change of the blocks depends on the positions of the eyeballs of one or more eyes of the driver and the passenger and the intersection line (virtual connection line) of the direction the eyeball gazes with the light source position of the opposite-coming vehicle lamp, so that the blocks are divided, thereby more effectively preventing the glare phenomenon of the driver and the passenger caused by the light of the opposite-coming vehicle, causing eye discomfort.
In summary, the photosensitive and protective color-changing system for the windshield provided by the invention can effectively improve the defect of the heat-insulating paper in the prior art, and further can adjust the brightness of the windshield in a block manner according to the external ambient light and the lamps of the oncoming vehicles, thereby effectively and properly adjusting the brightness of the windshield, preventing the glare phenomenon of the driver and improving the driving safety and the comfort of the passengers.
Although the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the true spirit and scope of the invention.
Claims (10)
1. The utility model provides a windshield color-changing system of sensitization protection, is applicable to a windshield, and this windshield divides into several blocks, its characterized in that, this windshield color-changing system includes:
a light sensing unit for obtaining a light source position and an ambient light value;
the eyeball tracking unit is used for tracking and obtaining the eyeball position of the driver;
the vehicle-mounted processing unit is electrically connected with the light sensing unit and the eyeball tracking unit and generates a light and shade operation instruction of a windshield block according to the light source position, the ambient light value and the eyeball position; and
And the windshield control unit is electrically connected with the windshield and the vehicle-mounted processing unit and controls the brightness of each block on the windshield according to the brightness operation instruction of the windshield block.
2. The photoprotective windshield color-changing system of claim 1, further comprising a time unit electrically connected to the onboard processing unit.
3. The photoprotected windshield color-changing system according to claim 2, wherein if the time unit determines that the time unit is a daytime period, the on-board processing unit controls the windshield control unit to display the windshield in a sun-shading mode according to the windshield block shading operation command.
4. The photoprotective windshield color-changing system of claim 1, wherein the vehicle-mounted processing unit sets a region of the windshield adjacent to an intersection point of the connecting line of the light source position and the eyeball position with the windshield as a color-changing region.
5. The photoprotective windshield color-changing system of claim 1, wherein the light-sensing unit is a vehicular CCD camera, the vehicular processing unit is a microprocessor, and the windshield control unit is a windshield color-changing controller.
6. The photoprotected windshield color change system according to claim 1, wherein the eye tracking unit is configured to determine gaze directions of one or more eyes of the driver and the passenger.
7. The photosensitive protection windshield color-changing system of claim 1, wherein the vehicle-mounted processing unit determines whether the ambient light value exceeds a threshold value and determines whether to change the color of the area of the windshield according to the ambient light value.
8. The utility model provides a windshield color-changing system of sensitization protection, is applicable to a windshield, and this windshield divides into several blocks, its characterized in that, this windshield color-changing system includes:
a light sensing unit for obtaining a light source position and an ambient light value;
the eyeball tracking unit is used for tracking and obtaining the eyeball positions and the eye directions of one or more eyes of the driver and the passenger;
a time unit for obtaining a time period of a driving state;
the vehicle-mounted processing unit is electrically connected with the light sensing unit, the eyeball tracking unit and the time unit and generates a light and shade operation instruction of a windshield block according to the light source position, the environment luminosity value and the eyeball position; and
A windshield control unit electrically connected with the windshield and the vehicle-mounted processing unit, wherein the windshield control unit controls the brightness of each block on the windshield according to the brightness operation instruction of the windshield block,
when the time unit judges that the time is the daytime time, the vehicle-mounted processing unit controls the windshield control unit to enable the windshield to be displayed in a sun-shading mode through the bright-dark operation instruction of the windshield block.
9. The photoprotective windshield color-changing system of claim 8, wherein the on-board processing unit sets a region of the windshield adjacent to an intersection point of the connecting line of the light source position and the eyeball position with the windshield as a color-changing region.
10. The photoprotective windshield color-changing system of claim 8, wherein the vehicle-mounted processing unit determines whether the ambient light level exceeds a threshold value and determines whether to color the section of the windshield according to the ambient light level.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW109146032 | 2020-12-24 | ||
| TW109146032A TWI749962B (en) | 2020-12-24 | 2020-12-24 | A light-sensitive protective windshield discoloration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114670609A true CN114670609A (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110109648.2A Pending CN114670609A (en) | 2020-12-24 | 2021-01-27 | Photosensitive protection windshield color-changing system |
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| CN (1) | CN114670609A (en) |
| TW (1) | TWI749962B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006137209A (en) * | 2004-11-10 | 2006-06-01 | Auto Network Gijutsu Kenkyusho:Kk | Anti-glare device for vehicle |
| WO2014084064A1 (en) * | 2012-11-28 | 2014-06-05 | 株式会社村田製作所 | Automobile light amount adjustor |
| US10377212B2 (en) * | 2017-08-11 | 2019-08-13 | The Boeing Company | Dynamic anti-glare system for a windshield of a vehicle |
| CN108162729B (en) * | 2017-12-14 | 2020-05-05 | 昆山龙腾光电股份有限公司 | Automobile anti-glare system and method |
| CN211844048U (en) * | 2020-03-05 | 2020-11-03 | 广州市晶华精密光学股份有限公司 | Automobile-used sunshading board system and vehicle |
| TWM610067U (en) * | 2020-12-24 | 2021-04-01 | 林商行強化安全玻璃廠股份有限公司 | Windshield photochromic system having photosensitive protection |
-
2020
- 2020-12-24 TW TW109146032A patent/TWI749962B/en active
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2021
- 2021-01-27 CN CN202110109648.2A patent/CN114670609A/en active Pending
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| TW202224977A (en) | 2022-07-01 |
| TWI749962B (en) | 2021-12-11 |
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