WO2021114171A1 - 智能车窗系统及车载系统 - Google Patents

智能车窗系统及车载系统 Download PDF

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Publication number
WO2021114171A1
WO2021114171A1 PCT/CN2019/124820 CN2019124820W WO2021114171A1 WO 2021114171 A1 WO2021114171 A1 WO 2021114171A1 CN 2019124820 W CN2019124820 W CN 2019124820W WO 2021114171 A1 WO2021114171 A1 WO 2021114171A1
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WIPO (PCT)
Prior art keywords
dimming
touch
glass
controller
unit
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Ceased
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PCT/CN2019/124820
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English (en)
French (fr)
Inventor
王永波
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Application filed by BOE Technology Group Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN201980002976.3A priority Critical patent/CN115485158B/zh
Priority to PCT/CN2019/124820 priority patent/WO2021114171A1/zh
Priority to US17/044,082 priority patent/US11988912B2/en
Priority to EP19945462.0A priority patent/EP4074531A4/en
Publication of WO2021114171A1 publication Critical patent/WO2021114171A1/zh
Anticipated expiration legal-status Critical
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    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13318—Circuits comprising a photodetector
    • 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
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/008—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for protective arrangements according to this subclass
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/48—Variable attenuator

Definitions

  • the invention belongs to the technical field of display vehicle windows, and specifically relates to an intelligent vehicle window system and a vehicle-mounted system.
  • Dimming glass is also called electrically controlled dimming glass, electrically controlled liquid crystal glass, smart dimming glass, etc. It is a kind of functional laminated glass product made by sandwiching a high-tech liquid crystal film between two layers of glass and processed by high temperature and high pressure. .
  • the dimmer glass can be switched between a transparent state and an opaque state by various methods such as electric control, temperature control, light control, and voltage control. Due to various constraints, almost all of the dimming glasses that have been mass-produced on the market are electronically controlled dimming glasses. For example, when the dimmer glass is turned off, the liquid crystal molecules in the dimmer glass will appear irregularly dispersed.
  • the electronically controlled dimmer glass presents a transparent and opaque appearance; when the dimmer glass is energized, the The liquid crystal molecules in the light glass are arranged neatly, and light can penetrate freely. At this time, the light-adjusting glass instantly appears transparent.
  • the present invention aims to solve at least one of the technical problems existing in the prior art, and to provide an intelligent vehicle window system and a vehicle-mounted system.
  • an embodiment of the present invention provides a smart car window system, which includes: a plurality of dimming glasses and a central processing unit; wherein,
  • the plurality of dimming glasses are communicatively connected with the central processing unit, and are used for adjusting the light transmittance according to the dimming instruction sent by the central processing unit.
  • the dimming glass includes: a glass module, a first controller, and a brightness sensor;
  • the brightness sensor is used to sense the brightness of external ambient light
  • the first controller is configured to adjust the light transmittance of the glass module according to the brightness sensed by the brightness sensor.
  • the dimming glass further includes: a first touch component and a first display component;
  • the first display assembly includes: a plurality of first pixel units and a first driving unit, the driving unit is configured to drive the first pixel unit for display under the control of the first controller;
  • the first touch component includes: a plurality of first touch units, configured to send corresponding first touch signals to the first controller according to the received touch commands, so that the first controller The light transmittance of the glass module is adjusted according to the first touch signal.
  • the first controller can control the first driving unit to drive the first pixel unit to form a plurality of light-emitting pixel points; the first touch unit is arranged corresponding to the area where the light-emitting pixel points are located;
  • the first control unit sends different dimming instructions when receiving touch signals sent by touch units located in areas where different light-emitting pixel points are located.
  • the smart car window system further includes a display; the first controller is also used to send the current light transmittance of the glass module to the central control module, so that the central control module controls the The display displays the current light transmittance of the glass module.
  • the display includes a second touch component, configured to receive a corresponding second touch signal to the central processing controller according to the received touch instruction;
  • the central processing controller sends a corresponding dimming instruction to the first controller according to the received second touch signal, so that the first controller can control the dimming instruction according to the dimming instruction.
  • the light transmittance of the glass module is adjusted.
  • the display and the central control module are integrated in the same terminal.
  • the first controller and the central control module are connected by a bus.
  • the smart car window system further includes a power supply module, the power supply module is connected to the plurality of dimming glasses and the central control module, and is used to supply power to the plurality of dimming glasses and the central control module .
  • the dimming glass further includes: a waveform data control unit, a digital-to-analog converter, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a high-voltage operational amplifier unit;
  • the waveform data control unit is connected to the first controller; the input terminal of the digital-to-analog converter is connected to the first controller, the first output terminal is connected to the reference voltage terminal and the first terminal of the first resistor, and the second output terminal is fourth The first end of the resistor; the second end of the first resistor is connected to the first end of the second resistor, the second end of the second resistor is connected to the low power supply voltage end; the first end of the third resistor is connected to the first end The second end of a resistor, the first end of the second resistor, and the reverse input end of the high voltage operational amplifier unit, and the forward input end of the high voltage operational amplifier unit is connected to the second end of the fourth resistor And the first end of the first capacitor, the second end of the first capacitor is connected to the low power supply voltage end, and the output end of the high voltage operational amplifier unit is connected to the glass module; the high voltage operational amplifier unit The power supply terminal of is connected to the power supply module.
  • the power supply module includes:
  • Power supply unit used to provide standard power supply voltage
  • Power supply isolator used to isolate voltages higher than the standard power supply voltage
  • the board-level power conversion unit is used to convert the standard power supply voltage into the voltage required by the dimming glass and the middle processor, respectively.
  • the power supply module further includes: TVS tube and voltage regulator tube;
  • the transient suppression diode is connected to the power isolator, the zener tube and the low power supply voltage terminal, and the zener tube is connected to the board-level power conversion unit and the low power supply voltage terminal; the transient suppression The diode and the voltage regulator tube are used to stabilize the voltage output by the power isolator.
  • an embodiment of the present invention provides an in-vehicle system, which includes the above-mentioned smart window system.
  • Fig. 1 is a schematic diagram of a smart car window system according to an embodiment of the present invention.
  • Fig. 2 is a schematic diagram of a dimming glass according to an embodiment of the present invention.
  • Fig. 3 is a schematic diagram of a light emitting device according to an embodiment of the present invention.
  • Fig. 4 is a schematic diagram of the connection between the central control module and the dimming glass in the embodiment of the present invention.
  • Fig. 5 is a schematic diagram of another smart car window system according to an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of a dimming glass, a central control module and a display according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of the power supply module of the embodiment of the present invention supplying power to the dimming glass.
  • Fig. 8 is a schematic diagram of a power module according to an embodiment of the present invention.
  • Fig. 9 is a control flow chart of the dimming glass according to the embodiment of the present invention.
  • Fig. 10 is a control flowchart of a central control module according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a smart car window system according to an embodiment of the present invention.
  • the smart car window system includes a plurality of dimming glasses 2 and a central control module 1.
  • a plurality of dimming glasses 2 are communicatively connected with the central control module, and each dimming glass 2 can adjust the light transmittance according to the dimming instruction sent by the central control module 1.
  • the light transmittance of multiple dimming glasses 1 is simultaneously controlled by a central control module 2, so that the light transmittance of the windows of cars, trains, airplanes, etc., is applied to the smart window system.
  • the control is more intelligent.
  • the structures of the dimming glass and the central control module are described below respectively.
  • the dimming glass includes: a glass film group 21, a first controller 22, and a brightness sensor 23.
  • the brightness touch sensor 23 is used to sense the brightness of the external ambient light, and transmit the sensed brightness value to the first controller 22, and the first controller 22 will be based on the brightness value range and light transmittance during the period and storage.
  • the corresponding relationship of the overrate is to adjust the light transmittance of the glass film group 21.
  • the brightness of the ambient light sensed by the brightness sensor 23 on one side of the dimming glass 1 is brighter.
  • the first side of the side dimming glass 1 The controller 22 will lower the light transmittance of the glass film group 21; correspondingly, the brightness sensor 23 on the dimming glass 2 on the other side senses that the brightness of the ambient light is darker, and at this time, the side dimming
  • the first controller 22 of the glass 2 will increase the light transmittance of the glass film group 21, so as to achieve proper brightness adjustment in the vehicle and avoid the shortcomings of direct exposure to external ambient light.
  • the dimming glass 2 not only includes the above structure, the dimming glass 2 also includes: a first display assembly 24 and a first touch assembly 25; the first display assembly 24 includes: a plurality of first pixel units and The first driving unit, the driving unit is used to drive the first pixel unit to display under the control of the first controller; the first touch component includes: a plurality of first touch units, the first touch unit is used to receive When the touch command is reached, the corresponding first touch signal is sent to the first controller 22, so that the first controller 22 adjusts the light transmittance of the glass module 21 according to the first touch signal.
  • the first touch unit is a capacitive touch unit, that is, each touch unit includes a driving electrode and a receiving electrode.
  • each touch unit includes a driving electrode and a receiving electrode.
  • the receiving electrode in the first touch unit sends the touch signal to the first controller 22.
  • the device analyzes the change in the capacitance value between the driving electrode and the receiving electrode according to the touch signal. After detecting the change in the capacitance value, Then, the corresponding dimming instruction is sent to the glass module 21, so that the glass module 21 can adjust the light transmittance according to the dimming instruction.
  • both the first controller 22 and the central control module 1 may be control chips such as a Microcontroller Unit (MCU), (Central Processing Unit, CPU), etc.
  • MCU Microcontroller Unit
  • CPU Central Processing Unit
  • the first controller 21 in the dimming glass 2 can control the driving unit to drive part of the pixel units for display to form a plurality of light-emitting pixel points; the touch unit in the first touch component 24 It is set at least corresponding to the area where the light-emitting pixel point is located; that is, a touch unit is provided at the position where each light-emitting pixel point is located. Moreover, in the embodiment of the present invention, the touch unit disposed at the position of each light-emitting pixel point sends a touch signal to the first controller 22 after receiving the touch command.
  • each light-emitting pixel is equivalent to a touch dimming button.
  • a touch unit group is provided at a position corresponding to a single point of each pixel (each touch unit group includes a plurality of touch units arranged in a matrix).
  • the touch unit group corresponding to the first light-emitting pixel When the touch unit group corresponding to the first light-emitting pixel receives a touch command, it will send a corresponding touch signal to the first controller 22, and the first controller 22 will respond according to the touch signal it receives ,
  • the first dimming instruction is sent to the glass module 21 according to the pre-stored corresponding relationship between the touch unit group (or light-emitting pixel point) and the dimming instruction; after that, the glass module 21 is based on the first dimming instruction Command to adjust the light transmittance.
  • the light transmittance of the glass module is also adjusted according to the above method.
  • the dimming command corresponding to each light-emitting pixel position is different, that is, the adjusted light transmittance of the glass module is different. In other words, multiple light-emitting pixel points correspond to multiple light transmittances.
  • the first touch component 25 is designed as a transparent touch component; in this case, correspondingly
  • the light-emitting devices in the pixel unit and the touch devices in the touch assembly adopt transparent functional devices.
  • the light-emitting device in the pixel unit may specifically be an electroluminescent device, that is, the material of the light-emitting device is an electroluminescent (EL) luminescent material.
  • FIG. 3 is a schematic diagram of a light emitting device according to an embodiment of the present invention; referring to FIG. 3, an electroluminescent device may include a lower electrode 101, a lower dielectric layer 102, an electroluminescent material layer 103, an upper dielectric layer 104, which are sequentially arranged on a substrate. ⁇ 105 ⁇ Upper electrode 105.
  • Electroluminescence is an optical and electrical phenomenon in which a material emits light when an electric current passes through a material or a strong electric field passes through a material.
  • Electroluminescent display is a display technology that uses electroluminescent materials (such as GaAs) sandwiched between two layers of conductors. When current flows, the material layer emits visible light radiation. Electroluminescence works by exciting atoms through the passage of electric current. By exciting different electroluminescent materials, different colors of light can be emitted.
  • the electroluminescent device is composed of flat and parallel electrodes and EL materials. The top layer must be transparent so that light can penetrate.
  • the first controller 22 controls the driving unit to apply alternating current to the upper electrode 105 and the lower electrode 101 of the electroluminescent device to generate an electric field, and the electrons excited by the electric field strike the electroluminescent material layer. Fluorescent substances cause the transition and change of electronic energy levels, and recombine two to emit high-efficiency luminescence, that is, to realize the luminescence of electroluminescent devices. As long as an alternating voltage is applied to the upper electrode 105 and the lower electrode 101 of the electroluminescent device in the pixel unit, the pixel points of the pixel unit can be illuminated.
  • the first touch component 25 may specifically include a capacitive touch unit.
  • the capacitive touch unit may be a mutual-capacitive touch unit or a self-capacitive touch unit.
  • the touch unit when the touch unit is a mutual-capacitive touch unit, it includes drive electrodes and sensing electrodes; when the touch unit is a self-capacitive touch unit, it includes touch electrodes; whether the touch unit uses a mutual-capacitive touch
  • the control unit is also a self-contained touch unit.
  • the touch unit is preferably designed as a transparent touch unit, that is, transparent conductive materials are used for the electrode structure in the touch unit.
  • the glass module 21 may specifically be dyed dimming glass for adjusting the light transmittance of the dyed smart glass according to the dimming instruction sent by the first controller 22.
  • the dye-adjustable glass includes: a first substrate and a second substrate arranged opposite to each other, and a liquid crystal layer assumed to be between the first substrate and the second substrate.
  • the side of the first substrate close to the liquid crystal layer has a first electrode
  • the side of the second substrate close to the liquid crystal layer has a second electrode.
  • Dye dimming glass uses liquid crystal molecules on the liquid crystal layer to attach dyeing materials. When voltage is applied to the first electrode and the second electrode, an electric field is generated to drive the deflection of the liquid crystal molecules to adjust the light transmittance of the dye dimming glass.
  • the first controller 22 when the first controller 22 generates a first dimming command according to the touch command, and applies corresponding voltages on the first electrode and the second electrode of the dye dimming glass according to the first dimming command, so that the liquid crystal layer The liquid crystal molecules are deflected to realize the adjustment of the corresponding light transmittance.
  • the glass module 21 can also be selected from organic electrochromic light glass or inorganic electrochromic light glass, and the type of dimming glass is not limited in the embodiment of the present invention.
  • the first display component 24 and the first touch component 25 are formed in the same touch display module, and the touch display module and the glass film group 21 may adopt a laminated structure; specifically If there are pixels on the touch display module for dimming control of the glass film group 21, the touch display module can be arranged at a corner of the glass module 21 for the user to use for dimming.
  • the touch display module and the glass film group 21 can also adopt a spliced structure, and the positional relationship between the two is not limited in this embodiment.
  • Figure 4 is a schematic diagram of the connection between the central control module and the dimmer glass in the embodiment of the present invention. referring to Figure 4, in some embodiments, the first control 22 of the dimmer glass and the central control module 1 are connected via the CAN bus; Both the controller 22 and the central control module 1 are provided with CAN modules.
  • this communication mode may adopt the RS485 mode according to requirements.
  • the communication module in the first controller 22 is the master device of the RS485 module
  • the communication module of the central control module 1 is the slave device of the RS485 module. In this way, the master device always monitors whether the slave device sends control commands. When the dimming command is received, the light transmittance of the glass module 21 is adjusted.
  • FIG. 5 is a schematic diagram of another smart car window system according to an embodiment of the present invention.
  • the smart car window system not only includes the above structure, but also includes a display 3, which is connected to the central control Module 1 is connected. After the current light transmittance of each dimming glass 2 is fed back to the central control module 1, the central control module 1 will display the current light transmittance of each dimming glass 2 on the display 3.
  • FIG. 6 is a schematic diagram of a dimming glass, a central control module, and a display according to an embodiment of the present invention.
  • the above-mentioned display 2 may be a touch-sensitive display, that is, on the display A second display component 31 and a second touch component 32 are formed, and the second touch component 32 is used to send the second touch signal to the central control module 1 after receiving the touch command. Then, according to the pre-stored corresponding relationship between the second touch signal and the light transmittance, a corresponding second dimming instruction is generated, and the dimming instruction is sent to the first controller 22, so that the first controller 22 Adjust the light transmittance of the glass module according to the second dimming command.
  • each second touch component 32 in the touch display has different correspondingly adjusted glass modules 21. Specifically, after each second touch component 32 receives a touch command, it sends a second touch signal to the central control module 1 to transmit light to the glass module 21 corresponding to the second touch component 32. The overrate is adjusted, that is, the central control module 1 controls the glass module 21 independently.
  • each second touch component 32 can adopt the same structure as that of the first touch component, so it will not be repeated here.
  • the touch display can be a liquid crystal display module or an organic electroluminescent diode display module, which is not limited in this embodiment.
  • the central control module 1 and the display 3 can be integrated in the same terminal, that is, they can exist in the form of a vehicle; of course, the display 3 can exist independently of the central control module 1, for example, the display 3 can be a mobile phone, Tablet PC and so on.
  • Fig. 5 is a schematic diagram of another smart car window system according to an embodiment of the present invention.
  • the smart car window system not only includes the above-mentioned structure, the smart car window system also includes a power module, and the power module and Each dimming glass is connected with the central control module to supply power to the dimming glass and the central control module.
  • FIG. 7 is a schematic diagram of the power supply module of the embodiment of the present invention supplying power to the dimmer glass.
  • the dimmer glass 2 not only includes the above structure, but also includes a waveform data control unit 27 and a digital-to-analog converter.
  • the device 28 the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the first capacitor C1 and the high voltage operational amplifier unit 29; wherein the waveform data control unit 27 is connected to the first controller 22;
  • the input terminal of the converter 28 is connected to the first controller 22, the first output terminal is connected to the reference voltage terminal Vref and the first terminal of the first resistor R1, the second output terminal is connected to the first terminal of the fourth resistor R4;
  • the second end is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the low power supply voltage terminal VSS;
  • the first end of the third resistor R3 is connected to the second end of the first resistor R1 and the second resistor R2
  • the first terminal of the high voltage operational amplifier unit 29 is connected to the reverse input terminal of the high voltage operational amplifier unit 29.
  • the forward input terminal of the high voltage operational amplifier unit 29 is connected to the second terminal of the fourth resistor R4 and the first terminal of the first capacitor C1.
  • the second terminal is connected to the low power supply voltage terminal VSS, the output terminal of the high voltage operational amplifier unit 29 is connected to the glass module; the power terminal of the high voltage operational amplifier unit 29 is connected to the power module 42.
  • the dimming glass 2 is also provided with a first controller power supply module 26 for supplying power to the first controller 22.
  • the power supply module 4 includes a power supply unit 41 and a board-level power conversion unit 42 as an example.
  • the board-level power conversion unit 42 is used to convert the 27V input by the power supply unit into 24V and -24V. The voltage.
  • the reference voltage Vref, the first resistor R1, the second resistor R2, the third resistor R3, and the output voltage VOUT of the high-voltage op-amp unit 29 constitute an op-amp feedback system.
  • This design needs to output a sinusoidal signal of ⁇ 24V. Therefore, according to the concept of virtual disconnection of the op amp, for the inverting input terminal of the high-voltage op amp unit 29, the formula 1 is obtained according to the current relationship:
  • VOUT [(1/R1+1/R2+1/R3) ⁇ Vdac-Vref/R1] ⁇ R3; formula (3);
  • Vref 2.5V
  • Vdac the range of Vdac output is 0-2.5V, in order to output ⁇ 24V
  • VOUT (R3/R2+1) ⁇ Vref; formula (4).
  • R3 is 240K
  • R2 is 28K
  • Vref is set to 2.5V.
  • Substitute formula (4) to obtain VOUT 23.9V.
  • VOUT -(R3/R1) ⁇ Vref; formula (5);
  • the ⁇ 24V output amplitude requirement of the high-voltage operational amplifier unit 29 can be achieved; in addition, the output waveform of the digital-to-analog converter 28 is the frequency signal time.
  • the first The four resistors R4, the first capacitor C1 and the operational amplifier together form an active low-pass filter circuit.
  • the frequency calculation of the active low-pass filter circuit is shown below. For the positive input terminal V+ of the high-voltage operational amplifier unit, Laplace The changes get:
  • V+(s) [1/(1+sR4C1)] ⁇ Vdac(s); formula (6);
  • VOUT(s) ⁇ (1/R1+1/R2+1/R3) ⁇ [1/(1+sR4C1)] ⁇ Vdac(s)-Vref/R1 ⁇ R3; formula (7);
  • VOUT(s) A ⁇ 1/[1+(s/ ⁇ )] ⁇ Vdac(s)-B; formula (8);
  • the amplitude-frequency characteristic curve of the input signal and the output signal can be obtained to achieve the best amplification effect of the output frequency signal.
  • the function of the first controller 22 is to read the data in the waveform data control unit 27 according to an external control command, and then output it to the digital-to-analog converter 28 for conversion.
  • the input of the digital-to-analog converter 28 passes through a high-voltage operational amplifier. Unit 29 can obtain the required power waveform signal.
  • the analog-to-digital converter 28 in this module can also use DDS to generate signal waveforms. Since the implementation principle is similar, the details will not be repeated here.
  • the power module includes a power supply unit 41, a power isolator 43, and a board-level power conversion unit 42; among them, the power supply unit 41 is used to provide a standard power supply voltage; the power isolator 43 is used to isolate a power supply that is higher than the standard power supply voltage. Voltage; The board-level power conversion unit 42 is used to convert the standard power supply voltage into the voltage required by the dimming glass 2 and the processor 1 respectively.
  • FIG. 8 is a schematic diagram of a power supply module according to an embodiment of the present invention.
  • the power supply module 4 not only includes the above-mentioned structure, but also includes: a transient suppression diode (TVS tube) 44 and a voltage regulator tube 45; the TVS tube 44 Connect the power isolator 43, the zener tube 45 and the low power supply voltage terminal VSS, the zener tube 45 connects the board-level power conversion unit 42 and the low power supply voltage terminal VSS; the TVS tube 44 and the zener tube 45 are used to isolate the power supply The voltage output by the device 43 is stabilized.
  • TVS tube 44 transient suppression diode
  • the so-called low power supply voltage terminal in the embodiment of the present invention may be the reference ground.
  • Fig. 9 is a control flow chart of the dimming glass according to the embodiment of the present invention.
  • the method includes: initializing settings for each dimming glass; specifically, reading the last light transmission of the dimming glass in the setting Control the dimming ratio according to the light transmittance of the last dimming glass.
  • the first controller of each dimming glass listens to whether there is an address signal corresponding to the CAN bus, and if there is, reads the control instruction, and adjusts the transmittance of the glass module according to the control instruction, that is, completes the dimming
  • the instruction is stored at the same time for the next read control. If it is not heard, the current light transmittance is maintained.
  • FIG. 10 is a control flow chart of the central control module of the embodiment of the present invention.
  • the method includes: reading the control status of each dimming glass after initialization, and analyzing the operating status of the system according to the reported data, and the system is in good condition Under conditions, detect whether there is a control command coming. If there is a command, send the command to the CAN bus through the CAN bus. After the transmission is completed, wait for the dimming glass to send feedback information. If the feedback information of the dimming glass is obtained, It means that the central control module has successfully set the dimming glass, and then enters the next control sending process.
  • the method of status analysis can be used to analyze the overall system operation status, so that the operator can quickly locate the faulty module and facilitate system maintenance.
  • the setting method can be directly based on the feedback of the operating data of the dimming glass, and the central control module can display the transmittance of the dimming glass in real time through the display, so as to provide a convenient use experience.
  • an embodiment of the present invention provides an in-vehicle system, which includes the above-mentioned smart window system.
  • the smart window system can be applied to transportation facilities such as automobiles, trains, and airplanes.

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Abstract

本发明提供一种智能车窗系统及车载系统，属于显示车窗技术领域。本发明的智能车窗系统，其包括：多个调光玻璃和中央处理器；其中，所述多个调光玻璃与所述中央处理单元通信连接，用于根据所述中央处理单元发送的调光指令，对光线透过率进行调节。

Description

智能车窗系统及车载系统 技术领域
本发明属于显示车窗技术领域，具体涉及一种智能车窗系统及车载系统。
背景技术
调光玻璃也叫电控调光玻璃，电控液晶玻璃，智能调光玻璃等，是一种将高科技液晶膜夹层在两层玻璃之间，经过高温高压加工后而成的功能夹层玻璃产品。例如，根据控制手段及原理的不同，调光玻璃可由电控、温控、光控、压控等各种方式实现透明状态与不透明状态的切换。由于各种条件限制，目前市场上实现量产的调光玻璃，几乎都是电控型调光玻璃。例如，当调光玻璃关闭电源时，调光玻璃中的液晶分子会呈现不规则的散布状态，此时电控调光玻璃呈现透光而不透明的外观状态；当给调光玻璃通电后，调光玻璃中的液晶分子呈现整齐排列，光线可以自由穿透，此时调光玻璃瞬间呈现透明状态。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一，提供一种智能车窗系统及车载系统。
第一方面，本本发明实施例提供一种智能车窗系统，其包括：多个调光玻璃和中央处理器；其中，
所述多个调光玻璃与所述中央处理单元通信连接，用于根据所述中央处理单元发送的调光指令，对光线透过率进行调节。
其中，所述调光玻璃包括：玻璃模组、第一控制器、亮度传感器；
所述亮度传感器，用于感应外界环境光的亮度；
所述第一控制器，用于根据所述亮度传感器所感应的亮度，对所述玻璃模组的光线透过率进行调整。
其中，所述调光玻璃还包括：第一触控组件和第一显示组件；
所述第一显示组件包括：多个第一像素单元和第一驱动单元，所述驱动单元用于在所述第一控制器的控制下，驱动所述第一像素单元进行显示；
所述第一触控组件包括：多个第一触控单元，用于根据接收到触控指令，向所述第一控制器发送相应的第一触控信号，以使所述第一控制器根据所述第一触控信号对所述玻璃模组的光线透过率进行调整。
其中，所述第一控制器能够控制所述第一驱动单元驱动所述第一像素单元形成多个发光像素点；所述第一触控单元对应所述发光像素点所在区域设置；其中，
所述第一控制单元在接收到不同的所述发光像素点所在区域设置的触控单元所发送的触控信号时，发送的调光指令不同。
其中，所述智能车窗系统还包括显示器；所述第一控制器还用于将所述玻璃模组当前的光线透过率发送给所述中控模块，以使所述中控模块控制所述显示器对所述玻璃模组当前的光线透过率进行显示。
其中，所述显示器包括第二触控组件，用于接收根据接收到触控指令，向所述中央处理控制器发送相应的第二触控信号；
所述中央处理控制器根据所接收到的所述第二触控信号，向所述第一控制器发送相应的调光指令，以使所述第一控制器根据所述调光指令对所述玻璃模组的光线透过率进行调整。
其中，所述显示器和所述中控模块集成在同一终端中。
其中，所述第一控制器和所述中控模块通过总线连接。
其中，所述智能车窗系统还包括电源模块，所述电源模块与所述多个调光玻璃和所述中控模块连接，用于为所述多个调光玻璃和所述中控模块供电。
其中，所述调光玻璃还包括：波形数据控制单元、数模转换器、第一电阻、第二电阻、第三电阻、第四电阻和第一电容和高压运放单元；
所述波形数据控制单元连接第一控制器；所述数模转换器的输入端连接第一控制器，第一输出端连接参考电压端和第一电阻的第一端，第二输出端第四电阻的第一端；所述第一电阻的第二端连接第二电阻的第一端，第二电阻的第二端连接低电源电压端；所述第三电阻的第一端连接所述第一电阻的第二端、所述第二电阻的第一端和所述高压运放单元的反向输入端，所述高压运放单元的正向输入端连接所述第四电阻的第二端和所述第一电容的第一端，所述第一电容的第二端连接所述低电源电压端，所述高压运放单元的输出端连接所述玻璃模组；所述高压运放单元的电源端连接所述电源模块。
其中，所述电源模块包括：
电源单元，用于提供标准电源电压；
电源隔离器，用于隔离高于所述标准电源电压的电压；
板级电源转换单元，用于将所述标准电源电压分别转换为所述调光玻璃和所述中处理器所需电压。
其中，所述电源模块还包括：TVS管、稳压管；
所述瞬态抑制二极管连接所述电源隔离器、所述稳压管和低电源电压端，所述稳压管连接所述板级电源转换单元和所述低电源电压端；所述瞬态抑制二极管和所述稳压管用于将所述电源隔离器输出的电压进行稳压。
第二方面，本发明实施例提供一种车载系统，其包括上述述的智能车窗系统。
附图说明
图1为本发明实施例的一种智能车窗系统的示意图。
图2为本发明的实施例的调光玻璃的示意图。
图3为本发明实施例的发光器件的示意图。
图4为本发明实施例中控模块和调光玻璃的连接示意图。
图5为本发明实施例的另一种智能车窗系统的示意图。
图6为本发明实施例的一个调光玻璃和中控模块及显示器的示意图。
图7为本发明实施例的电源模块为调光玻璃供电的示意图。
图8为本发明实施例的电源模块的示意图。
图9为本发明实施例的调光玻璃的控制流程图。
图10为本发明实施例的中控模块的控制流程图。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步详细描述。
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。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”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。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
第一方面，本发明实施例提供一种智能车窗系统，其可以应用在汽车、火车、飞机等的车窗系统中。图1为本发明实施例的一种智能车窗系统的示意图，参照图11，该智能车窗系统包括多个调光玻璃2和中控模块1。其中，多个调光玻璃2与中控模块通信连接，每个调光玻璃2能够根据中控模块1的发送的调光指令，对光线透过率进行调节。
由于在本发明实施例中，通过一个中控模块2对多个调光玻璃1的光线透过率同时控制，以使应用智能车窗系统汽车、火车、飞机等车窗 的光线透过率的控制更加智能。
以下分别对调光玻璃和中控模块的结构进行说明。
图2为本发明的实施例的调光玻璃的示意图；参照图2，在一些实施例中，调光玻璃包括：玻璃膜组21、第一控制器22、亮度传感器23。其中，亮度触感器23用于感应外界环境光的亮度，并将所感应到的亮度值传输给第一控制器22，第一控制器22则会根据期内与存储的亮度值范围和光线透过率的对应关系，对玻璃膜组21的光线透过率进行调节。
例如：汽车两侧的调光玻璃2由于光线照射角度不同，其中一侧调光玻璃1上的亮度传感器23所感应到外界环境光的亮度较亮，此时该侧调光玻璃1的第一控制器22则会对玻璃膜组21的光线透过率调低；相应的，另一侧调光玻璃2上的亮度传感器23所感应到外界环境光的亮度较暗，此时该侧调光玻璃2的第一控制器22则会对玻璃膜组21的光线透过率调高，从而实现车内合适的亮度调节，避免外界环境光的直射缺点。在一些实施例中，调光玻璃2不仅包括上述结构，该调光玻璃2还包括：第一显示组件24和第一触控组件25；第一显示组件24包括：多个第一像素单元和第一驱动单元，驱动单元用于在第一控制器的控制下，驱动第一像素单元进行显示；第一触控组件包括：多个第一触控单元，第一触控单元用于根据接收到触控指令，向第一控制器22发送相应的第一触控信号，以使第一控制器22根据第一触控信号对所述玻璃模组21的光线透过率进行调节。
具体的，以第一触控单元为电容式触控单元，也即每个触控单元包括驱动电极和接收电极，当发生触控时，驱动电极和接收电极间的电容值将会发生改变，第一触控单元中的接收电极则将该触控信号发送给第一控制22器则根据该触控信号分析出驱动电极和接收电极间的电容值的变化，在检测出电容值变化后，则向玻璃模组21发送相应的调光指令，以使玻璃模组21根据调光指令对透光率进行调整。
其中，在本发明实施例中第一控制器22和中控模块1均可以是微控制单元(Microcontroller Unit；MCU)、(Central Processing Unit；CPU)等控制芯片。
进一步的，在本一些实施例中，调光玻璃2中的第一控制器21可以控制驱动单元驱动部分像素单元进行显示，形成多个发光像素点；第一触控组件24中的触控单元至少对应发光像素点所在区域设置；也就是说，在每一个发光像素点所在的位置设置有触控单元。而且，在本发明实施例中，各个发光像素点所在的位置设置的触控单元，在接收到触控指令后，向第一控制器22发送触控信号，此时第一控制器22根据不同位置的触控单元发送的触控信号，生成不同调光指令，以使玻璃模组21可以根据调光指令对透光率进行调整。简言之，每一个发光像素点相当于一个触控调光按钮。
具体的，假若第一控制器22控制驱动单元驱动相应的像素单元进行显示，共形成三个发光像素点，这三个发光像素点可以并排间隔排布。每个像素单点对应的位置设置有一个触控单元组(每个触控单元组包括呈矩阵排布的多个触控单元)。当第一个发光像素点对应的触控单元组接收到触控指令时，则会向第一控制器22发送相应的触控信号，第一控制器22则根据其所接收到的触控信号，则根据其内预先存储的触控单元组(或者发光像素点)与调光指令的对应关系，向玻璃模组21发送第一调光指令；之后，玻璃模组21则根据第一调光指令对透光率进行调整。同理，第二个发光像素点、第三个发光像素点对应的触控单元组接收到触控指令后，同样按照上述方法对玻璃模组的透光率进行调整。区别仅在于，每个发光像素点位置对应的调光指令不同，也即使得玻璃模组被调整后的透光率不同。换言之，多个发光像素点对应多个透光率。
在一些实施例中，为了避免第一显示组件24和第一触控组件25影响调光玻璃整体的玻璃功能，优选地，将第一触控组件25设计为透明触控组件；此时，相应的像素单元中的发光器件，以及触控组件中触控器件均采用透明的功能器件。
其中，在本实施例中，像素单元中的发光器件具体可以是电致发 光器件，也即发光器件的材料为电致(EL)发光材料。图3为本发明实施例的发光器件的示意图；参照图3，电致发光器件可以包括依次设置在基底上的下电极101、下介质层102、电致发光材料层103、上介质层104、上电极105。
在此需要说明的是，电致发光是一种电流通过材料，或有强电场通过材料时，材料发射光线的光学、电学现象。电致发光显示器(ELD)是一种使用电致发光材料(如GaAs)夹在两层导体间的显示技术。当电流流过，材料层发出可见光的辐射。电致发光是借着通过电流、激发原子使其发光工作。利用激发不同的电致发光材料，可以发出不同颜色的光。实际上电致发光器件适用平坦互相平行的电极和EL材料组成。顶层必须可以透光，使光能穿透。
对于电致发光器件的驱动和发光原理：第一控制器22控制驱动单元给电致发光器件的上电极105和下电极101施加交流电产生电场，被电场激发的电子撞击电致发光材料层中的荧光物质，引起电子能级的跃迁、变化、复合二发射高效率冷光，也即实现电致发光器件的发光。只要在像素单元中的电致发光器件的上电极105和下电极101施加交变电压，就可以实现像素单元的像素点的点亮。
在一些实施例中，第一触控组件25具体可以包括电容式触控单元，具体的，该电容式触控单元可以为互容式触控单元，也可以为自容式触控单元。其中，当触控单元为互容式触控单元，其包括驱动电极和感应电极；当触控单元为自容式触控单元，其包括触控电极；无论是触控单元采用互容式触控单元还是自容式触控单元，为保证智能玻璃的透光率，优选地将触控单元设计为透明触控单元，也即将触控单元中的电极结构选用透明导电材料。
。
在一些实施例中，玻璃模组21具体可以染料调光玻璃，用于根据第一控制器22发送的调光指令，对染料智能玻璃的透光率进行调整。具体该染料调光玻璃包括：相对设置的第一基板和第二基板，以及假设在第一基板和第二基板之间的液晶层。第一基板靠近液晶层的一侧具有第一电极，第二基板靠近液晶层的一侧具有第二电极。染料调光 玻璃是利用在液晶层的液晶分子附着染色物料，当给第一电极和二电极上施加电压，产生电场驱动液晶分子的发生偏转时，以调整染料调光玻璃的透光率。
具体的，当第一控制器22根据触控指令生成第一调光指令，并根据第一调光指令在在染料调光玻璃第一电极和第二电极上施加相应电压，以使液晶层的液晶分子偏转，实现相应的透光率的调节。
当然，在一些实施例中玻璃模组21也可以选用有机电致变色调光玻璃或者无机电致变色调光玻璃，对于调光玻璃的类型在本发明实施例中不进行限定。
在本一些实施例中，第一显示组件24和第一触控组件25形成在同一触控显示模组中，该触控显示模组和玻璃膜组21可以采用叠层设置的结构；具体的，触控显示模组上若具有用于对玻璃膜组21进行调光控制的像素点，可以将触控显示模组设置在玻璃模组21一个边角位置，以便用户用以调光。当然，触控显示模组和玻璃膜组21也可以采用拼接的结构，在本实施例中并不是二者的位置关系进行限定。
图4为本发明实施例中控模块和调光玻璃的连接示意图；参照图4，在一些实施例中，调光玻璃的第一控制22与中控模块1通过CAN总线连接；也即在第一控制器22和中控模块1上均设置有CAN模块。
其中，当第一控制器22和中控模块1采用CAN总线方式进行通信时，该种通信方式可以根据需求，采用RS485方式。具体的，第一控制器22中的通信模块为RS485模块的主设备，中控模块1的通信模块为RS485模块的从设备，这样一来，主设备时刻监听从设备是否有调控指令的发送，在接收到调光指令时则进行玻璃模组21透光率的调整。
图5为本发明实施例的另一种智能车窗系统的示意图，参照图5，在一些实施例中，智能车车窗系统不仅包括上述结构，而且还包括显示3，该显示器3与中控模块1连接。当各个调光玻璃2将的当前光线透过率反馈给中控模块1后，中控模块1则会将各个调光玻璃2将的当前光线透过率通过显示器3进行显示。
图6为本发明实施例的一个调光玻璃和中控模块及显示器的示意图， 参照图6，在一些实施例中，上述的显示器2具体可以为一触控显示器，也就是说在该显示器上形成有第二显示组件31和第二触控组件32，该第二触控组件32用于根据接收到触控指令后，将该第二触控信号发送给中控模块1，中控模块1则根据其内预先存储的第二触控信号与光线透过率的对应关系，生成相应的第二调光指令，并将该调光指令发送给第一控制器22，以使第一控制器22根据第二调光指令对玻璃模组的光线透过率进行调整。
在此需要说明的是，触控显示器中的不同第二触控组件32多对应调整的玻璃模组21不同。具体的，每个第二触控组件32在接收到触控指令后，发送给中控模块1第二触控信号，以对与该第二触控组件32对应的玻璃模组21的光线透过率进行调整，也就是说，中控模块1给以对玻璃模组21独立进行控制。
其中，在每个第二触控组件32的结构可以采用与第一触控组件相同的结构，故在此不再赘述。对于触控显示器可以是液晶显示模组，也可以有机电致发光二极管显示模组，在本实施例中对此不进行限定。
在一些实施例中，中控模块1和显示器3可以集成在同一终端中，也即可以以车载的形式存在；当然，显示,3可以与中控模块1独立存在，例如显示器3可以为手机、平板电脑等。
图5为本发明实施例的另一种智能车窗系统的示意图，参照图5在一些实施例中，智能车窗系统不仅包括上述结构，该智能车窗系统还包括电源模块，该电源模块与各个调光玻璃和中控模块连接，为调光玻璃和中控模块供电。
在一个示例中，图7为本发明实施例的电源模块为调光玻璃供电的示意图，参照图7，其中，调光玻璃2不仅包括上述结构，而且还包括波形数据控制单元27、数模转换器28、第一电阻R1、第二电阻R2、第三电阻R3、第四电阻R4和第一电容C1和高压运放单元29；其中，波形数据控制单元27连接第一控制器22；数模转换器28的输入端连接第一控制器22，第一输出端连接参考电压端Vref和第一电阻R1的第一端，第二输出端第四电阻R4的第一端；第一电阻R1的第二端连接第二电阻R2的第一端，第二电阻R2的第二端连接低电源电压端VSS；第三电阻R3的第一端连接 第一电阻R1的第二端、第二电阻R2的第一端和高压运放单元29的反向输入端，高压运放单元29的正向输入端连接第四电阻R4的第二端和第一电容C1的第一端，第一电容C1的第二端连接低电源电压端VSS，高压运放单元29的输出端连接玻璃模组；高压运放单元29的电源端连接电源模块42。当然，调光玻璃2中还设置有为第一控制器22供电的第一控制器供电模块26。在下述具体工作的描述中以电源模块4包括电源单元41和板级电源转换单元42为例进行说明，其中，板级电源转换单元42用于将电源单元输入的27V电压转换成24V和-24V的电压。
如图7所示，参考电压Vref，第一电阻R1、第二电阻R2、第三电阻R3及高压运放单元29的输出电压VOUT构成运放反馈系统，本设计需要输出±24V电压的正弦信号，因此，根据运放的虚断概念，对于高压运放单元29的反向输入端处，根据电流关系得到公式1：
(Vref–V-)/R1+(VOUT-V-)/R3＝V-/R2；公式(1)；
再根据运放的虚短概念，有公式(2)：V-＝V+＝Vdac；
结合这公式(1)和公式(2)得到输出与数模转化器28输出直流状态下，高压运放单元29的反向输入端处电压Vdac的关系式为：
VOUT＝[(1/R1+1/R2+1/R3)×Vdac-Vref/R1]×R3；公式(3)；
在这里，假若Vref＝2.5V，Vdac输出的范围为0-2.5V，为了输出达到±24V；
当Vdac＝2.5V＝Vref时，高压运放单元29要满足输出最大值，此时表达式为：VOUT＝(R3/R2+1)×Vref；公式(4)。
在此，R3取240K，R2取28K，Vref设置2.5V，代入公式(4)得到VOUT＝23.9V。
当Vdac＝0V时，高压运放单元29要满足输出最小输出，此时表达式为：
VOUT＝-(R3/R1)×Vref；公式(5)；
在此，R1取25KΩ代入公式5得到VOUT＝-24V；
综上的理论计算，按照这样的参数设置，可以实现高压运放单元29的±24V输出的幅度要求；另外，在数模转化器28输出波型为频率信号时间，在图7中，使用第四电阻R4、第一电容C1和运放一起构 成了有源低通滤波电路，有源低通滤波电路的频率计算如下所示，对高压运放单元的正向输入端V+处，采用拉氏变化得到：
V+(s)＝[1/(1+sR4C1)]×Vdac(s)；公式(6)；
根据公式(1)、(2)、(6)得到输出：
VOUT(s)＝{(1/R1+1/R2+1/R3)×[1/(1+sR4C1)]×Vdac(s)-Vref/R1}×R3；公式(7)；
取A＝(1/R1+1/R2+1/R3)×R3，B＝(R3/R1)×Vref，τ＝1/R4C1，则公式(7)可简化为：
VOUT(s)＝A×{1/[1+(s/τ)]}×Vdac(s)-B；公式(8)；
根据公式(8)，可得到输入信号与输出信号的幅频特征曲线，以达到输出频率信号最佳放大效果。根据系统需要f可取200Hz，其中，s＝j2Пf，代入公式8中，就可以根据第四电阻R4的值确定第一电容C1的值。
在图7中，第一控制器22作用是根据外部控制命令进行读取波形数据控制单元27中的数据，然后输出给数模转换器28进行转换，数模转换器28的输入经过高压运放单元29就可以得到所需要的功率波形信号。
该模块中的模数转换器28也可采用DDS方式进行信号波形的产生，由于实现原理相似，在此不再重复赘述。
在一些实施例中，电源模块包括电源单元41、电源隔离器43和板级电源转换单元42；其中，电源单元41用于提供标准电源电压；电源隔离器43用于隔离高于标准电源电压的电压；板级电源转换单元42用于将标准电源电压分别转换为调光玻璃2和所述中处理器1所需电压。
进一步的，图8为本发明实施例的电源模块的示意图，参照图8，电源模块4不仅包括上述结构还包括：瞬态抑制二极管(TVS管)44、稳压管45；所述TVS管44连接电源隔离器43、稳压管45和低电源电压端VSS，稳压管45连接板级电源转换单元42和低电源电压端VSS；TVS管44和所述稳压管45用于将电源隔离器43输出的电压进行稳压。
在此需要说明的是，在本发明实施例中的所谓的低电源电压端可以是参考地。
以下给出本发明实施例中的给出对各个调光玻璃的控制方法。图9为本发明实施例的调光玻璃的控制流程图，参照图9，该方法包括：对各个调光玻璃进行初始化设置；具体的，在设置中读取上次调光玻璃的光线透过率，并按照上一次调光玻璃的光线透过率对调光比例进行控制。各个调光玻璃的第一控制器侦听CAN总线是否有与各自对应的地址信号，若有则读取控制指令，并按照控制指令对玻璃模组的透过率进行调节，也即完成调光玻璃的一次控制，同时将该指令存储，以备下一次进行读取控制。若没有侦听到，则保持当前的光线透过率。
以下给出本发明实施例中的给出中控模块的控制方法。图10为本发明实施例的中控模块的控制流程图，参照图10，该方法包括：在初始化后读取各调光玻璃的控制状态，并根据上报数据分析系统运行状态，在系统状态良好条件下，侦测是否有控制命令到来，若有命令，就通过CAN总线将命令发送到CAN总线，在发送完成后，要等待调光玻璃发送反馈信息，如果得到了调光玻璃的反馈信息，表示中控模块对调光玻璃设置成功，然后就进入下一个控制发送流程。在该中控模块中，可采用状态分析发的方法进行整体系统运行状况进行分析，以便操作人员能够快速定位到故障模块，便于进行系统维护。该设置方法可直接根据反馈上来的调光玻璃运行数据，而且中控模块可以通过显示器对调光玻璃的透过率进行实时显示，以提供便利的使用体验。
第二方面，本发明实施例提供一种车载系统，其包括上述的智能车窗系统。
该智能车窗系统可以应用在汽车、火车、飞机等交通设施上。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (13)

  1. 一种智能车窗系统，其包括：多个调光玻璃和中央处理器；其中，
    所述多个调光玻璃与所述中央处理单元通信连接，用于根据所述中央处理单元发送的调光指令，对光线透过率进行调节。
  2. 根据权利要求1所述的智能车窗系统，其中，所述调光玻璃包括：玻璃模组、第一控制器、亮度传感器；
    所述亮度传感器，用于感应外界环境光的亮度；
    所述第一控制器，用于根据所述亮度传感器所感应的亮度，对所述玻璃模组的光线透过率进行调整。
  3. 根据权利要求2所述的智能车窗系统，其中，所述调光玻璃还包括：第一触控组件和第一显示组件；
    所述第一显示组件包括：多个第一像素单元和第一驱动单元，所述驱动单元用于在所述第一控制器的控制下，驱动所述第一像素单元进行显示；
    所述第一触控组件包括：多个第一触控单元，用于根据接收到触控指令，向所述第一控制器发送相应的第一触控信号，以使所述第一控制器根据所述第一触控信号对所述玻璃模组的光线透过率进行调整。
  4. 根据权利要求3所述的智能车窗系统，其中，所述第一控制器能够控制所述第一驱动单元驱动所述第一像素单元形成多个发光像素点；所述第一触控单元对应所述发光像素点所在区域设置；其中，
    所述第一控制单元在接收到不同的所述发光像素点所在区域设置的触控单元所发送的触控信号时，发送的调光指令不同。
  5. 根据权利要求2-4中任一项所述的智能车窗系统，其中，所述智能车窗系统还包括显示器；所述第一控制器还用于将所述玻璃模组当前的光线透过率发送给所述中控模块，以使所述中控模块控制所述显示器对所述玻璃模组当前的光线透过率进行显示。
  6. 根据权利要求5所述的智能车窗系统，其中，所述显示器包括第二触控组件，用于接收根据接收到触控指令，向所述中央处理控制器发送相应的第二触控信号；
    所述中央处理控制器根据所接收到的所述第二触控信号，向所述第一控制器发送相应的调光指令，以使所述第一控制器根据所述调光指令对所述玻璃模组的光线透过率进行调整。
  7. 根据权利要求5所述的智能车窗系统，其中，所述显示器和所述中控模块集成在同一终端中。
  8. 根据权利要求2-4中任一项所述的智能车窗系统，其中，所述第一控制器和所述中控模块通过总线连接。
  9. 根据权利要求2-4中任一项所述的智能车窗系统，其中，所述智能车窗系统还包括电源模块，所述电源模块与所述多个调光玻璃和所述中控模块连接，用于为所述多个调光玻璃和所述中控模块供电。
  10. 根据权利要求8所述的智能车窗系统，其中，所述调光玻璃还包括：波形数据控制单元、数模转换器、第一电阻、第二电阻、第三电阻、第四电阻和第一电容和高压运放单元；
    所述波形数据控制单元连接第一控制器；所述数模转换器的输入端连接第一控制器，第一输出端连接参考电压端和第一电阻的第一端，第二输出端第四电阻的第一端；所述第一电阻的第二端连接第二电阻的第一端，第二电阻的第二端连接低电源电压端；所述第三电阻的第一端连接所述第一电阻的第二端、所述第二电阻的第一端和所述高压运放单元的反向输入端，所述高压运放单元的正向输入端连接所述第四电阻的第二端和所述第一电容的第一端，所述第一电容的第二端连接所述低电源电压端，所述高压运放单元的输出端连接所述玻璃模组；所述高压运放单元的电源端连接所述电源模块。
  11. 根据权利要求8所述的智能车窗系统，其中，所述电源模块包括：
    电源单元，用于提供标准电源电压；
    电源隔离器，用于隔离高于所述标准电源电压的电压；
    板级电源转换单元，用于将所述标准电源电压分别转换为所述调光玻璃和所述中处理器所需电压。
  12. 根据权利要求10所述的智能车窗系统，其中，所述电源模块还包括：瞬态抑制二极管、稳压管；
    所述瞬态抑制二极管连接所述电源隔离器、所述稳压管和低电源电压端，所述稳压管连接所述板级电源转换单元和所述低电源电压端；所述TVS管和所述稳压管用于将所述电源隔离器输出的电压进行稳压。
  13. 一种车载系统，其包括：权利要求1-12中任一项所述的智能车窗系统。
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CN114291125A (zh) * 2021-12-03 2022-04-08 中车唐山机车车辆有限公司 一种轨道车辆用车窗及会议车厢
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