WO2019184472A1 - 防炫目装置、控制方法及车辆 - Google Patents

防炫目装置、控制方法及车辆 Download PDF

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Publication number
WO2019184472A1
WO2019184472A1 PCT/CN2018/123046 CN2018123046W WO2019184472A1 WO 2019184472 A1 WO2019184472 A1 WO 2019184472A1 CN 2018123046 W CN2018123046 W CN 2018123046W WO 2019184472 A1 WO2019184472 A1 WO 2019184472A1
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WO
WIPO (PCT)
Prior art keywords
color
light
changing
driver
vehicle
Prior art date
Application number
PCT/CN2018/123046
Other languages
English (en)
French (fr)
Inventor
武乃福
马希通
寇立欣
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/606,145 priority Critical patent/US11628709B2/en
Priority to EP18912921.6A priority patent/EP3771577B1/en
Publication of WO2019184472A1 publication Critical patent/WO2019184472A1/zh

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/02—Windows; Windscreens; Accessories therefor arranged at the vehicle front, e.g. structure of the glazing, mounting of the glazing
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/153—Constructional details
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/153—Constructional details
    • G02F1/155—Electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/163—Operation of electrochromic cells, e.g. electrodeposition cells; Circuit arrangements therefor

Definitions

  • the present disclosure relates to the field of traffic safety technology, and in particular to an anti-glare device, a control method, and a vehicle.
  • Embodiments of the present disclosure provide an anti-glare device applied to a vehicle, including:
  • Sensing module driving module and electronically controlled color changing film
  • the sensing module is configured to acquire state information when the vehicle is traveling;
  • the driving module is configured to generate a driving signal of the electronic color-changing film according to the state information
  • the electrically color-changing film is disposed on a front windshield of the vehicle for changing a transmittance to external light according to the driving signal.
  • the electrically color-changing film comprises: a first transparent electrode layer, a second transparent electrode layer, and an electrically color-changing layer disposed between the first transparent electrode layer and the second transparent electrode layer
  • the first transparent electrode layer and the second transparent electrode layer are each composed of a plurality of transparent strip electrodes, strip electrodes of the first transparent electrode layer and strips of the second transparent electrode layer The electrodes are arranged opposite each other.
  • the plurality of transparent strip electrodes of the first transparent electrode layer and the plurality of transparent strip electrodes of the second transparent electrode layer are directed from the first transparent electrode layer
  • the two transparent electrode layers are arranged one above the other in the direction.
  • the plurality of transparent strip electrodes of the first transparent electrode layer are arranged in a matrix; and the plurality of transparent strip electrodes of the two transparent electrode layers are arranged in a matrix.
  • the status information includes an illumination direction of external light
  • the sensing module includes a wide-angle camera disposed on the vehicle body
  • the wide-angle camera is used to capture a picture in front of the vehicle, and the picture is grayed out Degree processing, determining a relative coordinate of the external light exceeding the light intensity threshold in the picture, and calculating a strong light coordinate of the external light exceeding a light intensity threshold according to the position of the wide-angle camera on the vehicle body And obtaining the illumination direction
  • the driving module is configured to determine a position of the color-changing region in the electronically controlled color-changing film according to the illumination direction.
  • the driving module is specifically configured to compare the illumination direction with a corresponding relationship between the stored illumination direction and the color change region, and determine a position of the color change region in the electronically controlled color-changing film.
  • the electrically color-changing film is specifically configured to control, according to the driving signal, a plurality of the plurality of transparent strip electrodes in the first transparent electrode layer located in the color-changing region
  • the transparent strip electrodes are energized at intervals to form a plurality of spaced stripes.
  • the status information further includes: a traveling speed v of the vehicle, a distance between the vehicle and the road center line viewed by the driver through the color changing area, and a road center line viewed by the driver through the color changing area.
  • the direction of movement of the person; the center line of the road is the center line between the roads in the opposite directions of travel.
  • the sensing module further includes: a vehicle speed sensor and a binocular camera; wherein the vehicle speed sensor is configured to detect a traveling speed v of the vehicle; and the binocular camera is disposed respectively after the two of the vehicle Two cameras of the mirror facing the surface in front of the vehicle; the two cameras are used to capture an image, and the images captured by the driver through the color-changing area are calculated by comparing the images captured by the two cameras The distance from the centerline of the road, and by comparing the images taken by the two cameras, identifies the direction of movement of the road centerline relative to the driver as viewed by the driver through the color-changing region.
  • the drive module is further configured to:
  • the distance z between the light-shielding stripes is determined according to the distance x between the vehicle and the center of the road viewed by the driver through the color-changing area, Where s is a fixed value, the value range is [50cm, 100cm]; y represents the distance between the driver and the front windshield;
  • the flashing frequency f of the light-shielding strip is the number of times the light-shielding strip moves to the end position in the initial position of the color-changing area in the unit time; the direction in which the light-shielding strip moves from the starting position to the ending position and the road viewed by the driver through the color-changing area The center line is consistent with the direction of movement of the driver;
  • the arrangement direction of the light-shielding stripes, the pitch between the light-shielding stripes, and the flashover frequency f are used as drive information.
  • the electrically color-changing film is specifically configured to control, according to the driving information, a plurality of transparent strip electrodes in the first transparent electrode layer and the second transparent electrode layer
  • the plurality of transparent strip electrodes in the color-changing region are energized at intervals of the arrangement direction of the light-shielding stripes, the pitch between the light-shielding stripes, and the flashing frequency f.
  • the color-changing region has a transmittance to ambient light of 0 or less than or equal to 40%.
  • the embodiment of the present disclosure further provides a control method, which is applied to the anti-glare device provided by the foregoing embodiment of the present disclosure, including:
  • Controlling, according to the driving signal, a plurality of transparent strip electrodes located in the color-changing region among the plurality of transparent strip electrodes in the first transparent electrode layer of the electro-optic color-changing film to be energized at intervals Includes a number of spaced blackout stripes.
  • acquiring state information when the vehicle is traveling includes: capturing a picture before the vehicle by using a wide-angle camera, performing grayscale processing on the picture, and determining relative of the external light exceeding the light intensity threshold in the picture. Coordinates, in combination with the position of the wide-angle camera on the vehicle body, calculate the strong light coordinates of the external light exceeding the light intensity threshold, thereby obtaining the illumination direction; and determining the position of the color-changing region according to the illumination direction.
  • determining the position of the color-changing region according to the illumination direction comprises: comparing the illumination direction with a corresponding relationship between the stored illumination direction and the color-changing region, and determining the electronically controlled color change The location of the discolored area in the film.
  • the status information further includes: a traveling speed v of the vehicle, a distance between the vehicle and the road center line viewed by the driver through the color changing area, and an extending direction of the road center line viewed by the driver through the color changing area;
  • the road center line is a center line between roads in a relative traveling direction;
  • the distance z between the light-shielding stripes is determined according to the distance x between the vehicle and the center of the road viewed by the driver through the color-changing area, Where s is a fixed value, the value range is [50cm, 100cm]; y represents the distance between the driver and the front windshield;
  • the flashing frequency f of the light-shielding strip is the number of times the light-shielding strip moves to the end position in the initial position of the color-changing area in the unit time; the direction in which the light-shielding strip moves from the starting position to the ending position and the road viewed by the driver through the color-changing area The center line is consistent with the direction of movement of the driver;
  • the arrangement direction of the light-shielding stripes, the pitch between the light-shielding stripes, and the flashover frequency are used as drive information.
  • the method before determining the direction of arrangement of the light-shielding stripes according to the direction of movement of the road taken by the driver through the color-changing region, the method further includes: capturing images through the two cameras, passing Comparing the images taken by the two cameras to identify the moving direction of the road center line viewed by the driver through the color changing area relative to the driver;
  • the method further comprises comparing the images captured by the two cameras before determining the spacing z between the shading stripes according to the distance x between the vehicle and the road center viewed by the driver through the color changing region. Calculating a distance between the vehicle and the centerline of the road viewed by the driver through the color changing area;
  • the method further comprises: obtaining a travel speed v of the vehicle before determining a flash frequency f of the light-shielding strip according to the travel speed v of the vehicle.
  • controlling the discoloration in the plurality of transparent strip electrodes in the first transparent electrode layer and the second transparent electrode layer of the electro-optic color-changing film according to the driving signal The plurality of transparent strip electrodes in the region are electrically connected to each other to form a plurality of spaced apart light shielding stripes, including: controlling the plurality of transparent strip electrodes in the first transparent electrode layer according to the driving information
  • the plurality of transparent strip electrodes located in the color-changing region are energized at intervals of the arrangement direction of the light-shielding stripes, the pitch between the light-shielding stripes, and the flashing frequency f.
  • embodiments of the present disclosure also provide a vehicle including a front windshield and the above-described anti-glare device.
  • the electronic color change film of the anti-glare device is disposed on the front windshield.
  • embodiments of the present disclosure also provide a computer device including: a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program being implemented by a processor The control method provided by the above embodiment of the present disclosure.
  • embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps in the control method provided by the above-described embodiments of the present disclosure.
  • FIG. 1 is a schematic structural diagram of an anti-glare device according to an embodiment of the present disclosure
  • FIG. 2 is a schematic view showing an electronically controlled color-changing film of an anti-glare device provided on a front windshield of a vehicle according to an embodiment of the present disclosure
  • FIG. 3 is a schematic cross-sectional view of an electrically color-changing film in an anti-glare device according to an embodiment of the present disclosure
  • FIG. 4 is a schematic plan view of an electrically controlled color-changing film in an anti-glare device according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of an operation principle of an anti-glare device according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of another working principle of an anti-glare device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of still another working principle of the anti-glare device according to the embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of steps of a control method according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic flowchart of a control method provided in an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a computer device according to an embodiment of the present disclosure.
  • the present disclosure proposes a solution to the problem that light causes a line of sight to the driver and causes a safety hazard.
  • an embodiment of the present disclosure provides an anti-glare device, as shown in FIGS. 1 and 2, including: a sensing module 11, a driving module 12, and an electrically color-changing film 13.
  • the sensing module 11 is configured to acquire state information when the vehicle is traveling;
  • the driving module 12 is configured to generate a driving signal of the electronic color changing film 13 according to the state information;
  • the electronic color changing film 13 is disposed on the front windshield of the vehicle. It is used to form a color changing area according to the driving signal, and the color changing area is used to change the transmittance to external light.
  • the electronically controlled color-changing film can be discolored to change the transmittance of the electronically controlled color-changing film to external light, thereby ensuring that the driver's line of sight is not interfered by external light, and the anti-glare is prevented. effect.
  • the anti-glare device of the embodiment can improve the driving safety of the driver, and thus has high practical value.
  • the anti-glare device of this embodiment will be described in detail below.
  • the discoloration area of the electro-optic color-changing film 13 of the embodiment is a grating structure including a plurality of spaced-apart light-shielding strips, and the grating structure is used to partially block external light to ensure that the amount of external light is not transmitted. Make the driver feel uncomfortable.
  • the electrically color-changing film 13 can be placed on the left side of the front windshield of the vehicle to prevent the driver's line of sight from being disturbed by the light of the oppositely-traveled vehicle.
  • the electrically color-changing film 13 of the present embodiment mainly includes: a first transparent electrode layer 31, a second transparent electrode layer 32, and a first transparent electrode layer 31 and a second transparent electrode.
  • the first transparent electrode layer 31 and the second transparent electrode layer 32 are each composed of a plurality of transparent strip electrodes 41, and the strip electrodes 41 of the first transparent electrode layer 31 and the strip electrodes 41 of the second transparent electrode layer 32 Relative settings.
  • the strip electrode 41 of the first transparent electrode layer 31 and the strip electrode 41 of the second transparent electrode layer 32 may be in the thickness direction of the electrically color-changing film 13 (as shown in FIG. 3).
  • the direction indicated by D1 that is, the direction from the first transparent electrode layer 31 to the second transparent electrode layer 32, is oppositely disposed one by one.
  • the plurality of transparent strip electrodes of the first transparent electrode layer may be arranged in a matrix, that is, a plurality of rows and columns; and the plurality of transparent strip electrodes of the two transparent electrode layers are arranged in a matrix. That is, the plurality of rows and columns are arranged; and the strip electrodes of the first transparent electrode layer and the strip electrodes of the second transparent electrode layer are disposed opposite to each other in the thickness direction of the electrically color-changing film.
  • the positive and negative ions are caused to migrate toward the electrochromic layer 33, so that the electrochromic layer 33 reversibly produces the colored compound.
  • the light-shielding stripes in the grating structure are visually presented.
  • one light-shielding stripe may be formed by one or two strip electrodes 41 controlling the color-changing layer 33 to change color.
  • the color-changing region of the present embodiment can form a grating structure composed of a plurality of light-shielding stripes.
  • a partial region of the electrically color-changing film 13 of the present embodiment can form a color-changing region according to a driving signal to provide an anti-glare function for the driver.
  • the entire area of the electrochromic film 13 may form a color-changing area according to the driving signal to provide the driver with an anti-glare function.
  • part or all of the area of the electro-optic color-changing film 13 can selectively form a color-changing area according to the driving signal, so as to adjust the position and size of the color-changing area according to the external light condition, thereby providing the driver with anti-glare function and driving
  • the member can view the road condition through the portion of the electronically controlled color-changing film 13 that is not formed into a color-changing area to ensure safe driving.
  • the state information acquired by the sensing module 11 of the present embodiment includes the direction of illumination of the external light.
  • the driving module 12 is specifically configured to determine the position of the color changing region according to the irradiation direction of the external light.
  • the brightness range that the human eye can feel is generally 0.001 nit to 1000000 nit, and the brightness range is from 10 nit to 10000 nit.
  • the human eye feels moderate. Therefore, a light intensity threshold can be set, for example, the light intensity threshold is 10000 nit.
  • the sensing module 11 detects that the light intensity exceeds the threshold, the anti-glare device automatically turns on. Of course, the driver can manually open the anti-glare device.
  • the sensing module 11 can include a photosensitive element, and the photosensitive element can obtain the direction of illumination of the vehicle by external light (specifically, the direction of the external light to the front windshield of the vehicle, or the direction of illumination of the external light to the driving position of the vehicle) ).
  • the photosensitive element may comprise a wide-angle camera disposed on the vehicle body.
  • the wide-angle camera can be disposed on a surface of the center rear view mirror of the vehicle that faces the exterior of the vehicle body.
  • the wide-angle camera captures the entire picture in front of the car, and then performs gray processing on the entire picture to determine the relative coordinates of the strong light exceeding the light intensity threshold in the entire picture, and then combines the wide-angle camera on the vehicle body.
  • the sensing module 11 can obtain the direction of illumination of the vehicle by external light through a photosensitive element such as a wide-angle camera.
  • the driving module 12 compares the illumination direction acquired by the sensing module 11 such as the photosensitive element with the correspondence between the previously stored illumination direction and the position of the color-changing region, determines the position of the color-changing region where the grating structure is to be formed, and generates a target for The driving signal of the color-changing region is such that only the color-changing region of the electro-optic color-changing film 13 forms a grating structure.
  • the principle of forming a grating structure in the color changing region of this embodiment will be described in detail below.
  • the anti-glare device of the present embodiment is applied to the vehicle A for the purpose of forming a grating structure on the front windshield of the vehicle A to partially block the light of the vehicle B.
  • a light blocking plate 52 is disposed on the road center line 51, and the lateral width of the light blocking plate 52 can effectively block most of the light of the vehicle B.
  • the light blocking plate 52 can also satisfy the vehicle A driver's acquisition of the horizontal field of view, and does not hinder the driver from observing the environment in front of the oblique direction, and has less psychological impact on the driver.
  • the grating structure formed by the anti-glare device of the present embodiment on the front windshield of the vehicle A is equivalent to the light blocking plate 52 shown in FIG. 5 in the viewing angle effect.
  • the plurality of strip electrodes 41 can be dynamically energized according to the driving signal, so that the portion of the electrically controlled color changing layer 33 corresponding to the energized strip electrode 41 is discolored, thereby causing the electronically controlled color changing layer 33.
  • the grating structure formed by the anti-glare device on the front windshield of the vehicle A is equivalent to the light blocking plate 52 shown in FIG. 5 in the viewing angle effect, that is, the anti-glare panel similar to the driver seeing the outside of the vehicle in the vehicle. The speed flashes through the same effect.
  • the state information acquired by the sensing module 11 of the present embodiment by the sensor element such as the photosensitive element further includes: the traveling speed v of the vehicle A, and the driver passing through the color changing area.
  • the road center line 51 is the road in the opposite directions of travel.
  • the sensing module 11 may further include: a car speed sensor and a binocular camera.
  • the vehicle speed sensor is used to detect the traveling speed v of the vehicle.
  • the car speed sensor can be a car speed sensor configured for the vehicle itself.
  • the binocular cameras are respectively disposed on the front surface of the two rearview mirrors of the vehicle facing the vehicle. By comparing the images taken by the two cameras, the spatial position of each point in front of the vehicle can be identified, and the distance x between the vehicle A and the road center line 51 viewed by the driver through the color changing area 71 can be calculated. At the same time, by comparing the images taken by the two cameras, it is possible to recognize the moving direction of the road center line 51 relative to the driver viewed by the driver through the color changing area 71.
  • the movement of the road center line 51 relative to the driver viewed by the driver through the color changing area 71 can be determined by comparing the images currently captured by the two cameras, and comparing the images currently captured by the two cameras with the images taken before the predetermined interval. direction.
  • the driving module 12 is specifically configured to:
  • the arrangement direction of the light-shielding stripes 72 in the grating structure is determined according to the moving direction of the road center line 51 viewed by the driver through the color-changing area 71 with respect to the driver; the arrangement direction of the light-shielding stripes 72
  • the road center line 51 viewed by the driver through the color changing area 71 coincides with the moving direction of the driver, or may be regarded as the arrangement direction of the light shielding strips 72 coincides with the extending direction of the road center line 51;
  • the spacing z between the light-shielding stripes 72 in the grating structure is determined based on the distance x between the vehicle A and the road center viewed by the driver through the color-changing region 71. In this step, it can be determined based on the geometric relationship shown in FIG. Where s is a fixed value, that is, the distance between the light blocking plates 52 in FIG. 5, and it is found by practice that the range of s is preferably [50 cm, 100 cm]; y represents the distance between the driver and the front windshield;
  • the flashing frequency f of the light-shielding stripe 72 in the grating structure is the number of times the light-shielding stripe 72 moves to the end position at the start position of the color-changing area 71 per unit time; the direction in which the light-shielding stripe 72 is moved from the start position to the end position and the driver sees through the color-changing area 71
  • the road center line is consistent with the direction of movement of the driver;
  • the driving information for forming the color-changing region 71 of the electro-optic color-changing film in accordance with the arrangement direction of the determined light-shielding stripes 72, the pitch z between the light-shielding stripes 72, and the flashing frequency f is generated.
  • the grating structure formed by the electrically color-changing film is equivalent to the light-shielding plate 52 shown in FIG. 5 in terms of viewing angle effect with respect to the driver.
  • the light-shielding strip 72 can be moved in the color-changing area 71 in accordance with the flashing frequency f matched by the traveling speed V of the vehicle A, thereby simulating the positional change of the light-blocking plate 52 of the vehicle A during running.
  • the anti-dazzle device of the present embodiment can control the electronically controlled color-changing film disposed on the front windshield to form a grating structure to provide anti-glare to the driver.
  • the anti-dazzle device of the present embodiment can control the electronically controlled color-changing film disposed on the front windshield to form a grating structure to provide anti-glare to the driver.
  • this embodiment does not limit the light-shielding form of the color-changing region in the electro-optic color-changing film, and the driving module can also drive the electronically controlled color-changing film to form a low transmittance (for example, the transmittance is less than 40%, such as 3%- 8%, or 8%-40%) of the discolored area, which can act as a driver's sunglasses to achieve an anti-glare effect.
  • the driving module can also drive the electronically controlled color-changing film to form a low transmittance (for example, the transmittance is less than 40%, such as 3%- 8%, or 8%-40%) of the discolored area, which can act as a driver's sunglasses to achieve an anti-glare effect.
  • an embodiment of the present disclosure further provides a control method applied to the anti-glare device described above, as shown in FIG.
  • Step 81 Obtain state information when the vehicle is traveling
  • Step 82 Generate a driving signal of the electronically controlled color-changing film according to the state information, and send the driving signal to the electronic color-changing film, so that the electronic color-changing film forms a color-changing area according to the driving signal, and the color-changing area is used to change the transmission of external light. rate. Specifically, generating a driving signal of the electrically color-changing film according to the state information, transmitting the driving signal to the electronic color-changing film; and controlling the first to the electronic color-changing film according to the driving signal Among the plurality of transparent strip electrodes in the transparent electrode layer, a plurality of transparent strip electrodes located in the color-changing region are energized at intervals, forming a light-shielding strip including a plurality of spaced-apart rows.
  • the anti-glare device of the above-described embodiment of the present disclosure can perform work based on the control method of the present embodiment, and therefore the technical effect that the anti-glare device can achieve, the control method of the embodiment can also be implemented.
  • a partial region of the electrically color-changing film of the present embodiment can form a color-changing region according to the driving signal to provide an anti-glare function for the driver.
  • the entire area of the electrochromic film 13 may form a color-changing area according to the driving signal to provide the driver with an anti-glare function.
  • the state information of the portion of the electronically controlled color-changing film 13 is a color-changing region
  • the state information of the present embodiment includes: an illumination direction of the front windshield by the external light; when the step 82 is performed, the determination is specifically performed according to the illumination direction. a position of the color changing region, and generating a driving signal corresponding to the color changing region.
  • the state information of the embodiment further includes: a traveling speed of the vehicle, a distance between the vehicle and the road center line viewed by the driver through the color changing area, and an extending direction of the road center line viewed by the driver through the color changing area;
  • the center line of the road is the center line between the roads in the opposite direction of travel;
  • the above step 82 specifically includes:
  • Step S21 determining an arrangement direction of the light-shielding stripe in the grating structure according to a moving direction of the road center line viewed by the driver through the color-changing area, the arrangement direction of the light-shielding stripe and the driver seeing through the color-changing area
  • the road center line is consistent with the direction of movement of the driver
  • Step S22 determining the distance z between the light-shielding stripes in the grating structure according to the distance x between the vehicle and the road center viewed by the driver through the color-changing area, Where s is a fixed value, the value range is [50cm, 100cm]; y represents the distance between the driver and the front windshield;
  • Step S23 determining the flashing frequency f of the light-shielding stripe in the grating structure according to the traveling speed v of the vehicle,
  • the flashing frequency is the number of times the light-shielding strip moves to the end position in the initial position of the color-changing area in the unit time; the direction in which the light-shielding strip moves from the starting position to the ending position and the road viewed by the driver through the color-changing area
  • the center line is consistent with the direction of movement of the driver;
  • step S24 drive information for forming a color change region of the electrically color-changing film to conform to the arrangement direction of the determined light-shielding stripes, the pitch between the light-shielding stripes, and the flashover frequency is generated.
  • the grating structure formed by the color changing region is equivalent to the driver in setting the light shielding plate at the center of the road. Further, the light-shielding strip formed by the color-changing area can be moved in the color-changing area in accordance with the flashing frequency matched by the traveling speed of the vehicle, thereby simulating the positional change of the shutter during the running of the vehicle.
  • control method of this embodiment can be as follows.
  • the anti-glare function may be that the user actively opens by operation, or may be turned on when the front light is detected by a sensing component such as a photosensitive element such as a sensing element in the control method of the embodiment.
  • a sensing component such as a photosensitive element such as a sensing element in the control method of the embodiment.
  • the control sensor module After the anti-glare function is turned on, the control sensor module acquires information such as the direction of illumination of the external light, the traveling speed of the vehicle, and the distance between the vehicle and the road center.
  • control driving module determines the position of the color changing area according to the irradiation direction of the external light, and controls the driving module to calculate the flashing frequency of the light-shielding stripe in the grating structure and the light-shielding strip according to the traveling speed of the vehicle and the distance between the vehicle and the road center. Information such as spacing.
  • the control driving module sends a driving signal that satisfies the above requirements to the electronically controlled color changing film, thereby implementing the anti-glare function of the electronically controlled color changing film.
  • an embodiment of the present disclosure also provides a vehicle including the anti-glare device provided by the above embodiment of the present disclosure. Based on the anti-glare device, the vehicle of the embodiment can perform shading treatment on the external light, thereby ensuring that the driver's line of sight is not disturbed by light, and the driving safety can be improved.
  • the solution of the embodiment is particularly suitable for large vehicles such as trucks and buses. These vehicles have a relatively low fault tolerance rate for the driver. Once the driver's line of sight is disturbed by light, it is likely to affect the judgment and cause an accident.
  • another embodiment of the present disclosure further provides a computer device 100, including: a processor 101, a memory 102, and a computer program stored on the memory 102 and executable on the processor 101.
  • the data interaction between the processor 101 and the memory 102 can be implemented through a bus interface.
  • the bus interface can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 101 and various circuits of memory represented by memory 92.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the processor 101 of this embodiment reads the program of the memory, and can perform the following process:
  • the status information of the embodiment includes an illumination direction of the front windshield by the external light; and the processor 101 reads the program of the memory, and specifically performs the following process:
  • a position of the color-changing region is determined according to the irradiation direction, and a driving signal corresponding to the color-changing region is generated.
  • the color changing region is a grating structure including a plurality of spaced-apart blackout stripes.
  • the status information of the embodiment further includes a traveling speed of the vehicle, a distance between the vehicle and the road center line viewed by the driver through the color changing area, and an extending direction of the road center line viewed by the driver through the color changing area;
  • the middle line of the road is the center line between the roads in the opposite driving direction;
  • the flashing frequency f of the light-shielding stripe in the grating structure is the number of times the light-shielding strip moves to the end position in the initial position of the color-changing area in the unit time; the direction in which the light-shielding strip moves from the starting position to the ending position and the road viewed by the driver through the color-changing area The center line is consistent with the direction of movement of the driver;
  • Driving information for forming a color-changing region of the electro-optic color-changing film to conform to the arrangement direction of the determined light-shielding stripes, the pitch between the light-shielding stripes, and the flashover frequency is generated.
  • another embodiment of the present disclosure also provides a computer readable storage medium having stored thereon a computer program.
  • the computer program is executed by the processor to implement the following steps:
  • the status information of the embodiment includes an illumination direction of the front windshield by external light
  • a position of the color-changing region is determined according to the irradiation direction, and a driving signal corresponding to the color-changing region is generated.
  • the color changing region is a grating structure including a plurality of spaced-apart blackout stripes.
  • the status information of the embodiment further includes a traveling speed of the vehicle, a distance between the vehicle and the road center line viewed by the driver through the color changing area, and an extending direction of the road center line viewed by the driver through the color changing area;
  • the center line of the road is the center line between the roads in the opposite direction of travel;
  • the flashing frequency f of the light-shielding stripe in the grating structure is the number of times the light-shielding strip moves to the end position in the initial position of the color-changing area in the unit time; the direction in which the light-shielding strip moves from the starting position to the ending position and the road viewed by the driver through the color-changing area The center line is consistent with the direction of movement of the driver;
  • Driving information for forming a color-changing region of the electro-optic color-changing film to conform to the arrangement direction of the determined light-shielding stripes, the pitch between the light-shielding stripes, and the flashover frequency is generated.

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Abstract

一种防炫目装置、控制方法及车辆。其中防炫目装置包括：传感模块（11）、驱动模块（12）以及电控变色薄膜（13）；传感模块（11）用于获取车辆行驶时的状态信息；驱动模块（12）用于根据状态信息生成电控变色薄膜（13）的驱动信号；电控变色薄膜（13）设置在车辆的前挡风玻璃上，用于根据驱动信号改变对外界光的透过率。该防炫目装置可以提高驾驶员的行车安全。

Description

防炫目装置、控制方法及车辆
相关申请的交叉引用
本申请主张在2018年3月26日在中国提交的中国专利申请号No.201810251894.X的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及交通安全技术领域，特别是指一种防炫目装置、控制方法及车辆。
背景技术
两车相会时灯光对驾驶员的视线干扰一直是当前难以解决的交通安全隐患。尤其在高速行驶时，驾驶员为了看清前方路面，一般不会关闭远光灯。据统计，80％以上的高速交通事故发生在夜间，其中一部分主要原因是驾驶员因视线受到灯光干扰而导致判断力下降，执行了错误的驾驶操作。
发明内容
本公开的实施例提供一种防炫目装置，应用于车辆，包括：
传感模块、驱动模块以及电控变色薄膜；
其中，所述传感模块用于获取所述车辆行驶时的状态信息；
所述驱动模块用于根据所述状态信息生成所述电控变色薄膜的驱动信号；
所述电控变色薄膜设置在所述车辆的前挡风玻璃上，用于根据所述驱动信号改变对外界光的透过率。
在一些实施例中，所述电控变色薄膜包括：第一透明电极层、第二透明电极层以及设置在所述第一透明电极层和所述第二透明电极层之间的电控变色层；其中，所述第一透明电极层和所述第二透明电极层均由多个透明的条状电极组成，所述第一透明电极层的条状电极与所述第二透明电极层的条状电极相对设置。
在一些实施例中，所述第一透明电极层的多个透明的条状电极与所述第 二透明电极层的多个透明的条状电极在从所述第一透明电极层指向所述第二透明电极层的方向上一一相对设置。
在一些实施例中，所述第一透明电极层的多个透明的条状电极按照矩阵排列；所述二透明电极层的多个透明的条状电极按照矩阵排列。
在一些实施例中，所述状态信息包括外界光的照射方向；所述传感模块包括设置在车体上的广角摄像头；所述广角摄像头用于拍摄车辆前的画面，对所述画面进行灰度处理，确定超过光强阈值的所述外界光在所述画面中的相对坐标，结合所述广角摄像头在所述车体上的位置计算出超过光强阈值的所述外界光的强光坐标，从而获得所述照射方向；所述驱动模块用于根据所述照射方向，确定所述电控变色薄膜中变色区域的位置。
在一些实施例中，所述驱动模块具体用于将所述照射方向与存储的照射方向与变色区域的对应关系进行比对，确定出所述电控变色薄膜中变色区域的位置。
在一些实施例中，所述电控变色薄膜具体用于，根据所述驱动信号，控制向所述第一透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极间隔通电，形成包括多个间隔排布的遮光条纹。
在一些实施例中，所述状态信息还包括：车辆的行驶速度v、驾驶员通过变色区域所观看到的车辆与道路中线的距离以及驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向；所述道路中线为相对两个行驶方向上的道路之间的中心沿线。所述传感模块进一步包括：汽车速度传感器和双目摄像头；其中，所述汽车速度传感器用于检测所述车辆的行驶速度v；所述双目摄像头包括分别设置在所述车辆的两个后视镜的面向所述车辆前方的表面的两个摄像头；所述两个摄像头用于拍摄图像，对比所述两个摄像头拍摄的图像，计算出所述驾驶员通过变色区域所观看到的车辆与道路中线的距离，并通过对比所述两个摄像头拍摄的图像识别出所述驾驶员通过变色区域所观看到的道路中线相对驾驶员的移动方向。
所述驱动模块还用于：
根据驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向，确定遮光条纹的排列方向，所述遮光条纹的排列方向与驾驶员通过变色 区域所观看到的道路中线相对所述驾驶员的移动方向一致；
根据驾驶员通过变色区域所观看到的车辆与道路中心的距离x，确定遮光条纹之间的间距z，
Figure PCTCN2018123046-appb-000001
其中，s为定值，取值范围为[50cm,100cm]；y表示驾驶员与前挡风玻璃之间的距离；
根据车辆的行驶速度v，确定遮光条纹的闪过频率f，
Figure PCTCN2018123046-appb-000002
所述闪过频率为遮光条纹单位时间内在变色区域的起始位置移动至结尾位置的次数；所述遮光条纹由起始位置移动至结尾位置的方向与驾驶员透过变色区域所观看到的道路中线相对于驾驶员的移动方向一致；
将所述遮光条纹的排列方向、所述遮光条纹之间的间距以及所述闪过频率f作为驱动信息。
在一些实施例中，所述电控变色薄膜具体用于，根据所述驱动信息，控制向所述第一透明电极层和所述第二透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极按照所述遮光条纹的排列方向、所述遮光条纹之间的间距以及所述闪过频率f间隔通电。
在一些实施例中，所述变色区域对外界光的透过率为0或小于或等于40％。
此外，本公开的实施例还提供一种控制方法，应用于本公开上述实施例提供的防炫目装置，包括：
获取车辆行驶时的状态信息；
根据所述状态信息生成电控变色薄膜的驱动信号，将所述驱动信号发送给所述电控变色薄膜；
根据所述驱动信号，控制向所述电控变色薄膜的所述第一透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极间隔通电，形成包括多个间隔排布的遮光条纹。
在一些实施例中，获取车辆行驶时的状态信息包括：利用广角摄像头拍摄车辆前的画面，对所述画面进行灰度处理，确定超过光强阈值的所述外界光在所述画面中的相对坐标，结合所述广角摄像头在车体上的位置计算出超过光强阈值的所述外界光的强光坐标，从而获得所述照射方向；根据所述照射方向，确定所述变色区域的位置。
在一些实施例中，所述根据所述照射方向，确定所述变色区域的位置包 括：将所述照射方向与存储的照射方向与变色区域的对应关系进行比对，确定出所述电控变色薄膜中变色区域的位置。
在一些实施例中，所述状态信息还包括：车辆的行驶速度v、驾驶员通过变色区域所观看到的车辆与道路中线的距离以及驾驶员通过变色区域所观看到的道路中线的延伸方向；所述道路中线为相对的行驶方向上的道路之间的中心沿线；
根据所述状态信息生成所述电控变色薄膜的驱动信号，包括：
根据驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向，确定遮光条纹的排列方向，所述遮光条纹的排列方向与驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向一致；
根据驾驶员通过变色区域所观看到的车辆与道路中心的距离x，确定遮光条纹之间的间距z，
Figure PCTCN2018123046-appb-000003
其中，s为定值，取值范围为[50cm,100cm]；y表示驾驶员与前挡风玻璃之间的距离；
根据车辆的行驶速度v，确定遮光条纹的闪过频率f，
Figure PCTCN2018123046-appb-000004
所述闪过频率为遮光条纹单位时间内在变色区域的起始位置移动至结尾位置的次数；所述遮光条纹由起始位置移动至结尾位置的方向与驾驶员透过变色区域所观看到的道路中线相对于驾驶员的移动方向一致；
将所述遮光条纹的排列方向、所述遮光条纹之间的间距以及所述闪过频率作为驱动信息。
在一些实施例中，在根据驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向，确定遮光条纹的排列方向之前，所述方法还包括：通过两个摄像头拍摄图像，通过对比所述两个摄像头拍摄的图像识别出所述驾驶员通过变色区域所观看到的道路中线相对驾驶员的移动方向；
在一些实施例中，在根据驾驶员通过变色区域所观看到的车辆与道路中心的距离x，确定遮光条纹之间的间距z之前，所述方法还包括：对比所述两个摄像头拍摄的图像，计算出所述驾驶员通过变色区域所观看到的车辆与道路中线的距离；
在一些实施例中，在根据车辆的行驶速度v，确定遮光条纹的闪过频率f之前，所述方法还包括：获取所述车辆的行驶速度v。
在一些实施例中，根据所述驱动信号，控制向所述电控变色薄膜的所述 第一透明电极层和所述第二透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极间隔通电，形成包括多个间隔排布的遮光条纹，包括：根据所述驱动信息，控制向所述第一透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极按照所述遮光条纹的排列方向、所述遮光条纹之间的间距以及所述闪过频率f间隔通电。
此外，本公开的实施例还提供一种车辆，包括前挡风玻璃及上述防炫目装置。其中，所述防炫目装置的电控变色薄膜设置在所述前挡风玻璃上。
此外，本公开的实施例还提供一种计算机设备，包括：处理器、存储器以及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被处理器执行时实现本公开上述实施例提供的控制方法。
此外，本公开的实施例还提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现本公开上述实施例提供的控制方法中的步骤。
附图说明
图1为本公开实施例提供的防炫目装置的结构示意图；
图2为本公开实施例提供的防炫目装置的电控变色薄膜设置在车辆的前挡风玻璃上的示意图；
图3为本公开实施例提供的防炫目装置中的电控变色薄膜的剖面示意图；
图4为本公开实施例提供的防炫目装置中的电控变色薄膜的俯面示意图；
图5为本公开实施例提供的防炫目装置的工作原理的示意图；
图6为本公开实施例提供的防炫目装置的另一工作原理的示意图；
图7为本公开实施例提供的防炫目装置的再一工作原理的示意图；
图8为本公开实施例提供的控制方法的步骤示意图；
图9为本公开实施例提供的控制方法在实际应用中的流程示意图；
图10为本公开实施例提供的计算机设备的结构示意图。
具体实施方式
为使本公开要解决的技术问题、技术方案和优点更加清楚，下面将结合 附图及具体实施例进行详细描述。在下面的描述中，提供诸如具体的配置和组件的特定细节仅仅是为了帮助全面理解本公开的实施例。因此，本领域技术人员应该清楚，可以对这里描述的实施例进行各种改变和修改而不脱离本公开的范围和精神。另外，为了清楚和简洁，省略了对已知功能和构造的描述。
应理解，说明书通篇中提到的“一个实施例”或“一实施例”意味着与实施例有关的特定特征、结构或特性包括在本公开的至少一个实施例中。因此，在整个说明书各处出现的“在一个实施例中”或“在一实施例中”未必一定指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。
在本公开的各种实施例中，应理解，下述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本公开实施例的实施过程构成任何限定。
本公开针对光线对驾驶员产生视线干扰而导致安全隐患的问题，提出一种解决方案。
一方面，本公开的实施例提供一种防炫目装置，如图1和图2所示，包括：传感模块11、驱动模块12以及电控变色薄膜13。其中，传感模块11用于获取车辆行驶时的状态信息；驱动模块12用于根据状态信息，生成电控变色薄膜13的驱动信号；电控变色薄膜13设置在车辆的前挡风玻璃上，用于根据驱动信号形成一变色区域，变色区域用于改变对外界光的透过率。
基于本实施例的防炫目装置，可以对电控变色薄膜进行变色，以改变电控变色薄膜对外界光的透过率，从而保证驾驶员的视线不受到外界光的干扰，起到防炫目的效果。
由此可见，本实施例的防炫目装置可以提高驾驶员的行车安全，因此具有较高的实用价值。
下面对本实施例的防炫目装置进行详细介绍。
具体地，本实施例的电控变色薄膜13的变色区域为包括多个间隔排布的遮光条纹的光栅结构，通过该光栅结构实现对外界光的部分遮挡，以保证外界光的透光量不让驾驶员感到不适。在实际应用中，可以将电控变色薄膜13 设置在车辆的前挡风玻璃的左侧，用以避免驾驶员的视线受到对向行驶车辆的灯光干扰。
其中，如图3和图4所示，本实施例的电控变色薄膜13主要包括：第一透明电极层31、第二透明电极层32以及设置在第一透明电极层31和第二透明电极层32之间的电控变色层33。
其中，第一透明电极层31和第二透明电极层32均由多个透明的条状电极41组成，第一透明电极层31的条状电极41与第二透明电极层32的条状电极41相对设置。在一实施例中，如图3所示，第一透明电极层31的条状电极41与第二透明电极层32的条状电极41可在电控变色薄膜13的厚度方向(如图3中D1所指的方向，即从第一透明电极层31指向第二透明电极层32的方向)上一一相对设置。在一实施例中，所述第一透明电极层的多个透明的条状电极可以按照矩阵排列，即多行多列；所述二透明电极层的多个透明的条状电极按照矩阵排列，即多行多列；且第一透明电极层的条状电极与第二透明电极层的条状电极可在电控变色薄膜的厚度方向上一一相对设置。
通过对第一透明电极层31和第二透明电极层32中的条状电极41施加电压，使正负离子向电控变色层33迁移，从而让电控变色层33可逆地产生出带色的化合物，在视觉上呈现出光栅结构中的遮光条纹。其中，一个遮光条纹可以是由一个或两个以上的条状电极41控制电控变色层33变色而成。
基于上述电控变色薄膜的结构，本实施例的变色区域可以形成由多个遮光条纹构成的光栅结构。
具体地，本实施例的电控变色薄膜13的部分区域可以根据驱动信号形成变色区域，为驾驶员提供防炫目功能。或者，电控变色薄膜13的全部区域可以根据驱动信号形成变色区域，为驾驶员提供防炫目功能。换言之，电控变色薄膜13的部分或全部区域可以根据驱动信号选择地形成变色区域，以便根据外界光情况调整变色区域的位置及大小，从而既可以为驾驶员提供防炫目功能，又可以使得驾驶员可以透过电控变色薄膜13的未形成为变色区域的部分观看道路情况，以确保安全驾驶。
以电控变色薄膜13的部分区域形成变色区域为例，本实施例的传感模块11获取的状态信息包括外界光的照射方向。
驱动模块12具体用于根据外界光的照射方向，确定变色区域的位置。
在实际应用中，人眼能感受到的亮度范围一般是0.001nit到1000000nit，而亮度范围在10nit到10000nit范围内人眼感觉适中，因此，可以设定一个光强阈值，例如光强阈值为10000nit。当传感模块11检测到光线强度超过阈值时，防炫目装置自动开启。当然，驾驶员可以手动操作开启防炫目装置。传感模块11可以包括感光元件，通过感光元件来获取外界光对车辆的照射方向(具体地，可以是外界光对车辆的前挡玻璃的照射方向，或者外界光对车辆的驾驶位置的照射方向)。在一实施例中，感光元件可以包括设置在车体上的广角摄像头。广角摄像头可以设置在车辆的中央后视镜的朝向车体外部的表面。使用过程中，广角摄像头拍摄车前的整个画面，然后对整个画面进行灰度处理，即可判断出超过光强阈值的强光在整个画面中的相对坐标，之后结合广角摄像头在车体上的位置，可以计算出超过光强阈值的强光的强光坐标，如相对人眼的位置的强光坐标。如此，传感模块11可以通过感光元件如广角摄像头获取外界光对车辆的照射方向。
之后，驱动模块12将传感模块11如感光元件获取的照射方向与预先存储的照射方向与变色区域的位置的对应关系进行比对，确定出待形成光栅结构的变色区域的位置，并生成针对该变色区域的驱动信号，以使电控变色薄膜13中只有变色区域形成光栅结构。下面对本实施例变色区域形成光栅结构的原理进行详细介绍。
示例性地，如图5所示，假设相对的两个行驶方向上的道路分别有车辆A和车辆B。
假设本实施例的防炫目装置应用于车辆A，其目的是在车辆A的前挡风玻璃上形成光栅结构以对车辆B的光线进行部分遮挡。
经多次路测发现，在道路中线51上设置挡光板52，利用挡光板52的横向宽度可以有效阻挡车辆B的大部分光线。同时挡光板52也能满足车辆A驾驶员获取横向视野，并不会阻碍驾驶员观察斜前方的环境，对驾驶员心理影响较小。
基于该原理，本实施例的防炫目装置在车辆A的前挡风玻璃上形成的光栅结构在视角效果上等同于图5所示的挡光板52。换言之，如图4所示，可 以根据驱动信号对多个条状电极41动态间隔通电，从而使得电控变色层33中与通电的条状电极41对应的部分变色，进而使得电控变色层33的一部分(如电控变色层33中与位于变色区域中的某个条状电极41对应的部分)或多个部分(如电控变色层33中与位于变色区域中的多个条状电极41分别对应的多个部分)动态间隔变色，即类似跑马灯的状态。这样，防炫目装置在车辆A的前挡风玻璃上形成的光栅结构在视角效果上等同于图5所示的挡光板52，即类似驾驶员在车里看到车外的防眩板以一定速度往后闪过一样的效果。
为实现上述光栅结构，进一步参考图5、图6和图7，本实施例的传感模块11通过感光元件等传感器件获取的状态信息还包括：车辆A的行驶速度v、驾驶员通过变色区域71所观看到的车辆A与道路中线51的距离x以及驾驶员通过变色区域71所观看到的道路中线51相对驾驶员的移动方向；其中，道路中线51为相对两个行驶方向上的道路之间的中心沿线。
具体地，传感模块11可以进一步包括：汽车速度传感器和双目摄像头。
其中，汽车速度传感器用于检测车辆的行驶速度v。汽车速度传感器可以为车辆本身所配置的汽车速度传感器。
双目摄像头分别设置在车辆的两个后视镜的面向车辆前方的表面。通过对比两个摄像头拍摄的图像，可以识别出车辆前方各点的空间位置，进而计算出驾驶员通过变色区域71所观看到的车辆A与道路中线51的距离x。同时，通过对比两个摄像头拍摄的图像，可以识别出驾驶员通过变色区域71所观看到的道路中线51相对驾驶员的移动方向。例如，可以通过对比两个摄像头当前拍摄的图像、以及对比两个摄像头当前拍摄的图像与预定间隔前拍摄的图像来确定出驾驶员通过变色区域71所观看到的道路中线51相对驾驶员的移动方向。
对应地，驱动模块12具体用于：
根据驾驶员通过变色区域71所观看到的道路中线51相对驾驶员的移动方向，确定光栅结构中遮光条纹72的排列方向(即图7中箭头A1所示方向)；该遮光条纹72的排列方向与驾驶员通过变色区域71所观看到的道路中线51相对驾驶员的移动方向一致，或者也可以看成是遮光条纹72的排列方向与道 路中线51的延伸方向一致；
根据驾驶员通过变色区域71所观看到的车辆A与道路中心的距离x，确定光栅结构中遮光条纹72之间的间距z。在本步骤中，可基于图6所示的几何关系，确定出
Figure PCTCN2018123046-appb-000005
其中，s为定值，即图5中挡光板52之间的距离，通过实践发现s取值范围以[50cm,100cm]为宜；y表示驾驶员与前挡风玻璃之间的距离；
根据车辆的行驶速度v，确定光栅结构中遮光条纹72的闪过频率f，
Figure PCTCN2018123046-appb-000006
其中闪过频率为遮光条纹72单位时间内在变色区域71的起始位置移动至结尾位置的次数；遮光条纹72由起始位置移动至结尾位置的方向与驾驶员透过变色区域71所观看到的道路中线相对于驾驶员的移动方向一致；
生成用于使电控变色薄膜的变色区域71形成符合确定出的遮光条纹72的排列方向、遮光条纹72之间的间距z以及闪过频率f的光栅结构的驱动信息。
基于上述方案，电控变色薄膜形成的光栅结构相对于驾驶员来讲，在视角效果上等同于图5所示的挡光板52。且遮光条纹72能够按照车辆A的行驶速度V相匹配的闪过频率f在变色区域71中进行移动，从而模拟出车辆A在行驶过程中挡光板52发生的位置变化。
以上是对本实施例的防炫目装置的示例性介绍，可以看出，本实施例的防炫目装置可以控制设置在前挡风玻璃上的电控变色薄膜形成光栅结构，以对驾驶员提供防炫目功能。应当指出的是，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以在上述电控变色薄膜作出适当变化。例如，本实施例并不限制电控变色薄膜中的变色区域的遮光形式，驱动模块也可以驱动电控变色薄膜形成一透过率较低(例如，透过率小于40％，如3％-8％，或8％-40％)的变色区域，该变色区域可以充当驾驶员的墨镜，从而实现防炫目的效果。
另一方面，本公开的实施例还提供一种应用于上述防炫目装置的控制方法，如图8所示，包括：
步骤81，获取车辆行驶时的状态信息；
步骤82，根据状态信息，生成电控变色薄膜的驱动信号，将驱动信号发送给电控变色薄膜使得电控变色薄膜根据驱动信号形成一变色区域，该变色 区域用于改变对外界光的透过率。具体地，根据所述状态信息生成电控变色薄膜的驱动信号，将所述驱动信号发送给所述电控变色薄膜；根据所述驱动信号，控制向所述电控变色薄膜的所述第一透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极间隔通电，形成包括多个间隔排布的遮光条纹。
本公开上述实施例的防炫目装置可以基于本实施例的控制方法执行工作，因此该防炫目装置所能实现的技术效果，本实施例的控制方法同样也能够实现。
具体地，本实施例的电控变色薄膜的部分区域可以根据驱动信号形成变色区域，为驾驶员提供防炫目功能。或者，电控变色薄膜13的全部区域可以根据驱动信号形成变色区域，为驾驶员提供防炫目功能。
以电控变色薄膜13的部分区域形成变色区域为例，本实施例的状态信息包括：外界光对所前挡风玻璃的照射方向；在执行上述步骤82时，具体根据所述照射方向，确定所述变色区域的位置，并生成对应所述变色区域的驱动信号。
具体地，本实施例的电控变色薄膜13的变色区域为包括多个间隔排布的遮光条纹的光栅结构，通过该光栅结构实现对外界光的部分遮挡，以保证外界光的透光量不让驾驶员感到不适。
下面对本实施例的控制方法对变色区域形成光栅结构的原理进行详细介绍。
具体地，本实施例的状态信息还包括：车辆的行驶速度、驾驶员通过变色区域所观看到的车辆与道路中线的距离以及驾驶员通过变色区域所观看到的道路中线的延伸方向；其中，道路中线为相对的行驶方向上的道路之间的中心沿线；
上述步骤82具体包括：
步骤S21，根据驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向，确定光栅结构中遮光条纹的排列方向，所述遮光条纹的排列方向与驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向一致；
步骤S22，根据驾驶员通过变色区域所观看到的车辆与道路中心的距离x，确定光栅结构中遮光条纹之间的间距z，
Figure PCTCN2018123046-appb-000007
其中，s为定值，取值范围为[50cm,100cm]；y表示驾驶员与前挡风玻璃之间的距离；
步骤S23，根据车辆的行驶速度v，确定光栅结构中遮光条纹的闪过频率f，
Figure PCTCN2018123046-appb-000008
所述闪过频率为遮光条纹单位时间内在变色区域的起始位置移动至结尾位置的次数；所述遮光条纹由起始位置移动至结尾位置的方向与驾驶员透过变色区域所观看到的道路中线相对于驾驶员的移动方向一致；
步骤S24，生成用于使电控变色薄膜的变色区域形成符合确定出的遮光条纹的排列方向、遮光条纹之间的间距以及闪过频率的光栅结构的驱动信息。
基于上述控制方法，变色区域形成的光栅结构相对于驾驶员来讲，在视角效果上等同于在道路中心设置遮光板。并且，变色区域形成的遮光条纹能够按照车辆的行驶速度相匹配的闪过频率在变色区域中进行移动，从而模拟出车辆在行驶过程中遮挡板的位置变化。
下面对本实施例的控制方法在实际应用中的流程进行示例性介绍。
如图9所示，本实施例的控制方法可以如下所示的流程。
开启防炫目功能。具体地，可以是用户通过操作主动开启，也可以是本实施例的控制方法通过传感模块如感光元件等传感器件探知前方光线时开启。
开启防炫目功能后，控制传感模块获取外界光的照射方向、车辆的行驶速度以及车辆与道路中心之间的距离等信息。
之后，控制驱动模块根据外界光的照射方向判断变色区域的位置，以及控制驱动模块根据车辆的行驶速度以及车辆与道路中心之间的距离计算光栅结构中遮光条纹的闪过频率以及遮光条纹之间的间距等信息。
控制驱动模块向电控变色薄膜发送满足上述要求的驱动信号，从而使电控变色薄膜实现防炫目功能。
此外，本公开的实施例还提供一种车辆，包括本公开上述实施例所提供的防炫目装置。基于该防炫目装置，本实施例的车辆可以对外界光进行遮光处理，从而保证驾驶员的视线不受到光线干扰，可以提高行车安全。
在实际应用中，本实施例的方案特别适用于货车、客车等大型车辆。这些车辆对驾驶员的容错率相对较低，一但驾驶员视线受到光线干扰，很可能影响判断力，导致意外发生。
此外，如图10所示，本公开的另一实施例还提供一种计算机设备100，包括：处理器101、存储器102以及存储在存储器102上并可在处理器101上运行的计算机程序。
其中，处理器101和存储器102之间可以通过总线接口实现数据交互。总线接口可以包括任意数量的互联的总线和桥，具体由处理器101代表的一个或多个处理器和存储器92代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。
其中，本实施例的处理器101读取存储器的程序，可以执行以下过程：
获取车辆行驶时的状态信息；
根据所述状态信息，生成电控变色薄膜的驱动信号，将驱动信号发送给电控变色薄膜使得所述电控变色薄膜根据所述驱动信号形成一变色区域，所述变色区域用于改变对外界光的透过率。
可选地，本实施例的状态信息包括外界光对所前挡风玻璃的照射方向；处理器101读取存储器的程序，具体执行以下过程：
根据所述照射方向，确定所述变色区域的位置，并生成对应所述变色区域的驱动信号。
可选地，所述变色区域为包括多个间隔排布的遮光条纹的光栅结构。
可选地，本实施例的状态信息还包括车辆的行驶速度、驾驶员通过变色区域所观看到的车辆与道路中线的距离以及驾驶员通过变色区域所观看到的道路中线的延伸方向；所述道路中线为相对的行驶方向上的道路之间的中心沿线；处理器101读取存储器的程序，具体执行以下过程：
根据驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向，确定光栅结构中遮光条纹的排列方向，所述遮光条纹的排列方向与驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向一致；
根据驾驶员通过变色区域所观看到的车辆与道路中心的距离x，确定光栅结构中遮光条纹之间的间距z，
Figure PCTCN2018123046-appb-000009
其中，s为定值，取值范围为[50cm,100cm]；y表示驾驶员与前挡风玻璃之间的距离；
根据车辆的行驶速度v，确定光栅结构中遮光条纹的闪过频率f，
Figure PCTCN2018123046-appb-000010
所述闪过频率为遮光条纹单位时间内在变色区域的起始位置移动至结尾位置的次数；所述遮光条纹由起始位置移动至结尾位置的方向与驾驶员透过变色区域所观看到的道路中线相对于驾驶员的移动方向一致；
生成用于使电控变色薄膜的变色区域形成符合确定出的遮光条纹的排列方向、遮光条纹之间的间距以及闪过频率的光栅结构的驱动信息。
此外，本公开的另一实施例还提供一种计算机可读存储介质，其上存储有计算机程序。所述计算机程序被处理器执行时实现如下步骤：
获取车辆行驶时的状态信息；
根据所述状态信息，生成电控变色薄膜的驱动信号，将驱动信号发送给电控变色薄膜使得所述电控变色薄膜根据所述驱动信号形成一变色区域，所述变色区域用于改变对外界光的透过率。
可选地，本实施例的状态信息包括外界光对所前挡风玻璃的照射方向；
所述计算机程序被处理器执行时具体实现如下步骤：
根据所述照射方向，确定所述变色区域的位置，并生成对应所述变色区域的驱动信号。
可选地，所述变色区域为包括多个间隔排布的遮光条纹的光栅结构。
可选地，本实施例的状态信息还包括车辆的行驶速度、驾驶员通过变色区域所观看到的车辆与道路中线的距离以及驾驶员通过变色区域所观看到的道路中线的延伸方向；所述道路中线为相对的行驶方向上的道路之间的中心沿线；
所述计算机程序被处理器执行时具体实现如下步骤：
根据驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向，确定光栅结构中遮光条纹的排列方向，所述遮光条纹的排列方向与驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向一致；
根据驾驶员通过变色区域所观看到的车辆与道路中心的距离x，确定光栅结构中遮光条纹之间的间距z，
Figure PCTCN2018123046-appb-000011
其中，s为定值，取值范围为[50cm,100cm]；y表示驾驶员与前挡风玻璃之间的距离；
根据车辆的行驶速度v，确定光栅结构中遮光条纹的闪过频率f，
Figure PCTCN2018123046-appb-000012
所述闪过频率为遮光条纹单位时间内在变色区域的起始位置移动至结尾位置的次数；所述遮光条纹由起始位置移动至结尾位置的方向与驾驶员透过变色 区域所观看到的道路中线相对于驾驶员的移动方向一致；
生成用于使电控变色薄膜的变色区域形成符合确定出的遮光条纹的排列方向、遮光条纹之间的间距以及闪过频率的光栅结构的驱动信息。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用“包括”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。

Claims (19)

  1. 一种防炫目装置，应用于车辆，包括：
    传感模块、驱动模块以及电控变色薄膜；
    其中，所述传感模块用于获取所述车辆行驶时的状态信息；
    所述驱动模块用于根据所述状态信息生成所述电控变色薄膜的驱动信号；
    所述电控变色薄膜设置在所述车辆的前挡风玻璃上，用于根据所述驱动信号改变对外界光的透过率。
  2. 根据权利要求1所述的防炫目装置，其中，所述电控变色薄膜包括：第一透明电极层、第二透明电极层以及设置在所述第一透明电极层和所述第二透明电极层之间的电控变色层；
    其中，所述第一透明电极层和所述第二透明电极层均由多个透明的条状电极组成，所述第一透明电极层的条状电极与所述第二透明电极层的条状电极相对设置。
  3. 根据权利要求2所述的防炫目装置，其中，所述第一透明电极层的多个透明的条状电极与所述第二透明电极层的多个透明的条状电极在从所述第一透明电极层指向所述第二透明电极层的方向上一一相对设置。
  4. 根据权利要求3所述的防炫目装置，其中，所述第一透明电极层的多个透明的条状电极按照矩阵排列；
    所述二透明电极层的多个透明的条状电极按照矩阵排列。
  5. 根据权利要求2至4中任何一项所述的防炫目装置，其中，
    所述状态信息包括外界光的照射方向；
    所述传感模块包括设置在车体上的广角摄像头；
    所述广角摄像头用于拍摄车辆前的画面，对所述画面进行灰度处理，确定超过光强阈值的所述外界光在所述画面中的相对坐标，结合所述广角摄像头在所述车体上的位置计算出超过光强阈值的所述外界光的强光坐标，从而获得所述照射方向；
    所述驱动模块用于根据所述照射方向，确定所述电控变色薄膜中变色区域的位置。
  6. 根据权利要求5所述的防炫目装置，其中，所述驱动模块具体用于将所述照射方向与存储的照射方向与变色区域的对应关系进行比对，确定出所述电控变色薄膜中变色区域的位置。
  7. 根据权利要求5所述的防炫目装置，其中，所述电控变色薄膜具体用于，根据所述驱动信号，控制向所述第一透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极间隔通电，形成包括多个间隔排布的遮光条纹。
  8. 根据权利要求7所述的防炫目装置，其中，所述状态信息还包括：车辆的行驶速度v、驾驶员通过变色区域所观看到的车辆与道路中线的距离以及驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向；所述道路中线为相对两个行驶方向上的道路之间的中心沿线；
    所述传感模块进一步包括：汽车速度传感器和双目摄像头；
    其中，所述汽车速度传感器用于检测所述车辆的行驶速度v；
    所述双目摄像头包括分别设置在所述车辆的两个后视镜的面向所述车辆前方的表面的两个摄像头；
    所述两个摄像头用于拍摄图像，对比所述两个摄像头拍摄的图像，计算出所述驾驶员通过变色区域所观看到的车辆与道路中线的距离，并通过对比所述两个摄像头拍摄的图像识别出所述驾驶员通过变色区域所观看到的道路中线相对驾驶员的移动方向；
    所述驱动模块还用于：
    根据驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向，确定遮光条纹的排列方向，所述遮光条纹的排列方向与驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向一致；
    根据驾驶员通过变色区域所观看到的车辆与道路中心的距离x，确定遮光条纹之间的间距z，
    Figure PCTCN2018123046-appb-100001
    其中，s为定值，取值范围为[50cm,100cm]；y表示驾驶员与前挡风玻璃之间的距离；
    根据车辆的行驶速度v，确定遮光条纹的闪过频率f，
    Figure PCTCN2018123046-appb-100002
    所述闪过频率为遮光条纹单位时间内在变色区域的起始位置移动至结尾位置的次数；所述遮光条纹由起始位置移动至结尾位置的方向与驾驶员透过变色区域所观看到的道路中线相对于驾驶员的移动方向一致；
    将所述遮光条纹的排列方向、所述遮光条纹之间的间距以及所述闪过频率f作为驱动信息。
  9. 根据权利要求8所述的防炫目装置，其中，所述电控变色薄膜具体用于，根据所述驱动信息，控制向所述第一透明电极层和所述第二透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极按照所述遮光条纹的排列方向、所述遮光条纹之间的间距以及所述闪过频率f间隔通电。
  10. 根据权利要求5所述的防炫目装置，其中，所述变色区域对外界光的透过率为0或小于或等于40％。
  11. 一种控制方法，应用于如权利要求5至10中任一项所述的防炫目装置，包括：
    获取车辆行驶时的状态信息；
    根据所述状态信息生成电控变色薄膜的驱动信号，将所述驱动信号发送给所述电控变色薄膜；
    根据所述驱动信号，控制向所述电控变色薄膜的所述第一透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极间隔通电，形成包括多个间隔排布的遮光条纹。
  12. 根据权利要求11所述的控制方法，其中，
    获取车辆行驶时的状态信息包括：
    利用广角摄像头拍摄车辆前的画面，对所述画面进行灰度处理，确定超过光强阈值的所述外界光在所述画面中的相对坐标，结合所述广角摄像头在车体上的位置计算出超过光强阈值的所述外界光的强光坐标，从而获得所述照射方向；
    根据所述照射方向，确定所述变色区域的位置。
  13. 根据权利要求12所述的控制方法，其中，所述根据所述照射方向，确定所述变色区域的位置包括：将所述照射方向与存储的照射方向与变色区域的对应关系进行比对，确定出所述电控变色薄膜中变色区域的位置。
  14. 根据权利要求11所述的控制方法，其中，所述状态信息还包括：车辆的行驶速度v、驾驶员通过变色区域所观看到的车辆与道路中线的距离以 及驾驶员通过变色区域所观看到的道路中线的延伸方向；所述道路中线为相对的行驶方向上的道路之间的中心沿线；
    根据所述状态信息生成所述电控变色薄膜的驱动信号，包括：
    根据驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向，确定遮光条纹的排列方向，所述遮光条纹的排列方向与驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向一致；
    根据驾驶员通过变色区域所观看到的车辆与道路中心的距离x，确定遮光条纹之间的间距z，
    Figure PCTCN2018123046-appb-100003
    其中，s为定值，取值范围为[50cm,100cm]；y表示驾驶员与前挡风玻璃之间的距离；
    根据车辆的行驶速度v，确定遮光条纹的闪过频率f，
    Figure PCTCN2018123046-appb-100004
    所述闪过频率为遮光条纹单位时间内在变色区域的起始位置移动至结尾位置的次数；所述遮光条纹由起始位置移动至结尾位置的方向与驾驶员透过变色区域所观看到的道路中线相对于驾驶员的移动方向一致；
    将所述遮光条纹的排列方向、所述遮光条纹之间的间距以及所述闪过频率作为驱动信息。
  15. 根据权利要求14所述的控制方法，其中，在根据驾驶员通过变色区域所观看到的道路中线相对所述驾驶员的移动方向，确定遮光条纹的排列方向之前，所述方法还包括：通过两个摄像头拍摄图像，通过对比所述两个摄像头拍摄的图像识别出所述驾驶员通过变色区域所观看到的道路中线相对驾驶员的移动方向；
    其中，在根据驾驶员通过变色区域所观看到的车辆与道路中心的距离x，确定遮光条纹之间的间距z之前，所述方法还包括：对比所述两个摄像头拍摄的图像，计算出所述驾驶员通过变色区域所观看到的车辆与道路中线的距离；
    其中，在根据车辆的行驶速度v，确定遮光条纹的闪过频率f之前，所述方法还包括：获取所述车辆的行驶速度v。
  16. 根据权利要求14所述的控制方法，其中，根据所述驱动信号，控制向所述电控变色薄膜的所述第一透明电极层和所述第二透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极间隔通电，形成包括多个间隔排布的遮光条纹，包括：
    根据所述驱动信息，控制向所述第一透明电极层中多个透明的条状电极中的位于所述变色区域中的多个透明的条状电极按照所述遮光条纹的排列方向、所述遮光条纹之间的间距以及所述闪过频率f间隔通电。
  17. 一种车辆，包括：
    前挡风玻璃；及
    根据权利要求1至10中任一项所述的防炫目装置；
    其中，所述防炫目装置的电控变色薄膜设置在所述前挡风玻璃上。
  18. 一种计算机设备，包括：处理器、存储器以及存储在所述存储器上并可在所述处理器上运行的计算机程序，其中，所述计算机程序被处理器执行时实现如权利要求11-16中任一项所述的控制方法。
  19. 一种计算机可读存储介质，其上存储有计算机程序，其中，所述计算机程序被处理器执行时实现如权利要求11-16中任一项所述的控制方法的步骤。
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