Intelligent dimming film assembly and dimming method and application thereof

Abstract

The invention discloses an intelligent dimming film assembly and a dimming method and application thereof, the intelligent dimming film assembly comprises a dimming film, a control module, a photoresistor module and a steering engine, and the control module is electrically connected with the dimming film; the photoresistor module is electrically connected with the control module and is used for monitoring surrounding light and feeding back a digital signal to the control module; the steering engine is electrically connected with the control module, and the control module controls the steering engine to rotate at different angles and in different directions according to the light intensity so as to control the light transmittance of the dimming film; the transmittance of the dimming film to natural light can be controlled, so that light reflection and light pollution are reduced, energy consumption can be greatly reduced, the life quality of people can be improved, intelligent life is achieved, the dimming film has the advantages of automatic adjustment, high precision, flexibility, low power consumption and the like, the application range is wide, and the dimming film has very good market prospects.

Description

Technical Field

[0001] The present application relates to the technical field of dimming films, and in particular to an intelligent dimming film assembly and a dimming method and application thereof. Background Art

[0002] In modern times, glass created based on natural lighting can effectively penetrate visible light, but it also causes great discomfort in the summer, that is, a large amount of light and heat enters the room, especially in cars with large glass areas for lighting and high-rise buildings with glass curtain walls. Windows, as the main component of the building envelope that exchanges energy with the outside world, play an important role in lighting and heat exchange. For example, if a car is parked in the sun for an hour, the temperature inside the car can reach over 60 degrees, which causes a lot of energy consumption for the car's air-conditioning system. If the daylight entering through the windows can be properly used, controlled and dimmed, not only will the energy consumed by lighting be reduced, but the burden on air conditioning can also be reduced. Therefore, in a low-carbon economy and society, it is extremely important to control the transmittance of glass to natural light, thereby reducing light reflection and light pollution, and strictly control the energy conservation and emission reduction of automobile and building glass. Therefore, this application proposes an intelligent dimming film component to solve the above problems. Summary of the Invention

[0003] To address the above-mentioned issues, the present application provides a smart dimming film assembly, a dimming method, and an application thereof, which can control the transmittance of the dimming film to natural light, thereby reducing light reflection and light pollution. This can not only greatly reduce energy consumption, but also improve people's quality of life and realize smart living. The technical solution is as follows:

[0004] In a first aspect, the present application provides an intelligent dimming film assembly, comprising a dimming film, a control module, a photoresistor module and a servo, wherein the control module is electrically connected to the dimming film; the photoresistor module is electrically connected to the control module for monitoring ambient light and feeding back a digital signal to the control module; the servo is electrically connected to the control module, and the control module controls the servo to rotate at different angles and directions according to light intensity to control the transmittance of the dimming film.

[0005] For example, in the smart dimming film assembly provided in one embodiment, a knife switch is also included, and the servo is electrically connected to the knife switch. The dimming film, control module, photoresistor module, servo and knife switch constitute a closed dimming circuit, and the servo drives the knife switch to open and close to realize the connection and disconnection of the dimming circuit, thereby realizing the switching of the dimming film between the blurred and transparent states.

[0006] For example, in the smart dimming film assembly provided in one embodiment, when the dimming circuit is in a power-off state, the dimming film is in a blurred state.

[0007] For example, in the smart dimming film assembly provided in one embodiment, the control module is an Arduino Uno single chip microcomputer.

[0008] For example, in the smart dimming film assembly provided in one embodiment, the dimming film is a liquid crystal molecular film, including two layers of transparent conductive I TO-PET support films and a liquid crystal layer sandwiched between the two I TO-PET support films.

[0009] For example, in the smart dimming film assembly provided in one embodiment, the photoresistor module is an ambient light sensor.

[0010] A second aspect of the present application provides a dimming method for an intelligent dimming film assembly, comprising the following steps: when the dimming circuit is energized: when the photoresistor module detects strong ambient light, a signal is fed back to the control module, and the control module controls the servo to rotate forward and drives the knife to open, so that the dimming circuit is disconnected and the dimming film is in a blurred state; when the photoresistor module detects weak ambient light, a signal is fed back to the control module, and the control module controls the servo to rotate reversely and drives the knife to close, so that the dimming circuit is connected and the dimming film is in a transparent state; when the dimming circuit is not energized: the dimming film is in a blurred state.

[0011] A third aspect of the present application provides an application of an intelligent dimming film assembly on a vehicle window glass, wherein the dimming film is affixed to the vehicle window surface or is affixed to the vehicle window interlayer.

[0012] The fourth aspect of the present application provides an application of an intelligent dimming film assembly on a rear projection screen, wherein the dimming film serves as an imaging curtain of a projector, a video player or a laser imaging system in a blurred state, and serves as a glass wall in a transparent state.

[0013] The fifth aspect of the present application provides an application of an intelligent dimming film assembly on a building window, wherein the dimming film is affixed to the surface of the window glass or is affixed to the interlayer of the window glass.

[0014] The beneficial effects brought about by an intelligent dimming film component and its dimming method and application provided by some embodiments of the present application are as follows: the present application uses a photoelectric sensor to monitor the external ambient light intensity, and can judge with high precision whether the transparency of the dimming film needs to be adjusted, thereby reducing the misjudgment rate; the system is controlled by Arduino language, and the transparency of the dimming film can be automatically adjusted according to the ambient light intensity by using a servo and a switch. The system can flexibly respond to various external environmental changes to ensure a stable adjustment effect, and the system has good energy-saving and environmental protection performance, which can reduce energy consumption and environmental pollution. The intelligent dimming film component of the present application has a wide range of applications and has very good market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is the logic block diagram of the smart dimming film component of this application;

[0017] Figure 2 This is the circuit connection diagram of the smart dimming film assembly of this application;

[0018] Figure 3 This is a flow chart of the dimming method of the smart dimming film assembly of this application. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0020] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0021] The first aspect of the present application provides a smart dimming film assembly, such as Figure 1 As shown, it includes a dimming film, a control module, a photoresistor module and a servo, wherein the control module is electrically connected to the dimming film; the photoresistor module is electrically connected to the control module for monitoring the surrounding light and feeding back a digital signal to the control module; the servo is electrically connected to the control module, and the control module controls the servo to rotate at different angles and directions according to the light intensity to control the transmittance of the dimming film.

[0022] The intelligent dimming film assembly of this application adjusts the transparency of the dimming film by sensing the ambient light intensity, which can effectively monitor and intelligently control light intensity. It operates stably and is suitable for a variety of scenarios. When the ambient light intensity changes, the resistance of the photoresistor begins to change with the light intensity. The servo reads the data from the serial port of the control module to achieve angle conversion. The rotation of the servo controls the power circuit of the dimming film, thereby realizing simple and low-cost intelligent dimming. Not only can it realize smart living, but it can also more conveniently adjust the ultraviolet transmittance by intelligently dimming the ambient light intensity.

[0023] The connection and disconnection of the dimming film circuit will present two states: transparent and blurred. These two states have their own advantages. When the dimming film is transparent, it is used on car windows or building windows, with a better line of sight and you can enjoy the scenery outside the window. When the outdoor light is dim, the transparent glass can also ensure maximum light transmission without affecting the internal environment being too dark. When the dimming film is in a blurred state, it is generally when the outdoor light is strong. At this time, even if there is no sunlight, ultraviolet rays can still be transmitted. The glass in a blurred state can isolate ultraviolet rays to the greatest extent, preventing ultraviolet rays from passing through the window and causing the internal temperature to rise. In addition, the blurred window also plays a certain protective role for privacy.

[0024] A servo is an integrated servo unit consisting of a DC motor, potentiometer (or other angle sensor), and gear reducer. It is a position (angle) servo driver. Its high-precision output and simple control make it easy to interface with microcontroller systems. In the electromechanical control system of small robots, a servo is the most basic output actuator, suitable for applications requiring continuous angle change and maintenance.

[0025] In this application, the dimming film circuit is 48-60V. Choosing a 48V relay is not only expensive, but also may cause the dimming film to explode due to unstable voltage. Therefore, the rotation of the servo is used to control the connection of the dimming film circuit, replacing the function of the relay.

[0026] For example, in the smart dimming film assembly provided in one embodiment, a knife switch is also included, and the servo is electrically connected to the knife switch. The dimming film, control module, photoresistor module, servo and knife switch constitute a closed dimming circuit, and the servo drives the knife switch to open and close to realize the connection and disconnection of the dimming circuit, thereby realizing the switching of the dimming film between the blurred and transparent states.

[0027] For example, in the smart dimming film assembly provided in one embodiment, when the dimming circuit is in a power-off state, the dimming film is in a blurred state.

[0028] According to the above embodiment, when the entire system is not powered on, the switchable film is in a blurred state, which not only blocks the invasion of ultraviolet rays but also plays a certain role in protecting privacy.

[0029] For example, in the smart dimming film assembly provided in one embodiment, the control module is an Arduino Uno single chip microcomputer.

[0030] According to the above embodiment, the intelligent dimming film component of the present application is based on the Arduino language to program the transmittance of the electrically controlled dimming film. As an open source electronic prototype platform, Arduino is not only inexpensive and easy to obtain, but also has an open source community and super programming functions. The present application uses the Arduino language to control the connection and disconnection of the dimming film circuit to achieve low-cost intelligent dimming.

[0031] The switch-on voltage of the dimming film is 48-60V AC, while the supply voltage of the Arduino board is only 5V. If the Arduino board is used directly to control the on and off of the dimming film circuit, a relay is required, which is very dangerous. Therefore, this application uses a servo to achieve this effect. The rotation of the servo drives the switch to control the dimming film circuit.

[0032] Specifically, the circuit connection relationship between the Arduino Uno microcontroller, the servo, and the light sensor, i.e., the photoresistor module, is as follows: Figure 2 As shown, the signal line (PWM) of the servo is connected to the Arduino microcontroller, which is programmed through the Arduino platform and loaded into the Arduino Uno microcontroller to control the servo to rotate at different angles and directions according to the light intensity. In this application, the dimming film circuit is not incorporated into the Arduino system, which also plays a certain protective role for the dimming film.

[0033] For example, in the smart dimming film assembly provided in one embodiment, the dimming film is a liquid crystal molecular film, including two layers of transparent conductive I TO-PET support films and a liquid crystal layer sandwiched between the two I TO-PET support films.

[0034] Among them, the smart light-changing film (PDLC) is a thin composite film that switches in an electrically responsive manner. It consists of a layer of (10-30μm) micron-sized liquid crystal (LC) droplets or nanodroplets in a solid polymer matrix and a surrounding interlayer film. In the absence of an electric field (non-steady state), the PDLC film is highly scattering, the LC droplets are chaotically distributed and the optical axis orientation is random, and light scatters on the film, at which time it is in an opaque state; under the action of an electric field (on state), the LC molecules in the droplets align with the electric field, the refractive index of LC matches that of the polymer matrix, and the PDLC film becomes transparent. After the electric field is removed, the LC droplets return to their initial random orientation state and are now in an opaque state, completing a switch conversion. The millisecond-level rapid switching response of the LC droplets to the electric field causes a rapid conversion from opaque to transparent.

[0035] For example, in the smart dimming film assembly provided in one embodiment, the photoresistor module is an ambient light sensor.

[0036] According to the above embodiment, the photoresistor can be considered a light-driven soft switch, which determines the circuit's output. Using a photoresistor as the driving core of an optical switch circuit offers advantages such as high sensitivity and ease of operation, and maintains high stability and reliability even under harsh conditions such as high temperature and humidity.

[0037] The second aspect of the present application provides a dimming method of an intelligent dimming film assembly, such as Figure 3As shown, the following steps are included: when the dimming circuit is powered on: when the photoresistor module detects strong ambient light, it feeds back a signal to the control module, and the control module controls the servo to rotate forward and drives the knife to open, so that the dimming circuit is disconnected and the dimming film is in a blurred state; when the photoresistor module detects weak ambient light, it feeds back a signal to the control module, and the control module controls the servo to rotate reversely and drives the knife to close, so that the dimming circuit is connected and the dimming film is in a transparent state; when the dimming circuit is not powered on: the dimming film is in a blurred state.

[0038] A third aspect of the present application provides an application of an intelligent dimming film assembly on a vehicle window glass, wherein the dimming film is affixed to the vehicle window surface or is affixed to the vehicle window interlayer.

[0039] Specifically, when the external ambient light is too strong, the servo rotates forward to drive the knife switch to open, so that the dimming circuit is disconnected, the dimming film is not powered and becomes blurred, isolating ultraviolet rays; when the external ambient light is weak, the servo rotates backward and cannot drive the knife switch to open, so that the dimming circuit is connected, and the dimming film is powered and becomes transparent; when the entire system is not connected to the power supply, which is equivalent to the car being turned off, the dimming film is also in a blurred state, which not only prevents the car from increasing too quickly when the outdoor temperature is parked, but also protects the privacy of the car.

[0040] The switch on and off of the dimming film circuit will show two states: transparent and blurred. These two states have their own advantages:

[0041] (1) Provide a comfortable riding experience: When the external sunlight is too strong, the dimming windows can filter the sunlight, lower the temperature inside the car, and provide a more comfortable environment for the passengers.

[0042] (2) Improve safety: Dimming windows can block direct sunlight from entering the car, reducing eye discomfort and the impact of driver blindness, thereby improving safety.

[0043] (3) Increased privacy: Drivers and passengers can adjust the transparency of the windows as needed to protect their personal privacy.

[0044] (4) Reduce energy consumption: Dimming windows can make the temperature inside the car more stable, reduce the use of air-conditioning equipment, and thus reduce the car's energy consumption and pollution.

[0045] The application of the intelligent dimming film component of the present application on the car window glass, the system can automatically adjust the transparency of the car window, reduce the burden on the driver and improve the comfort of the passengers; the system uses a photometric sensor to detect the intensity of external light, and can accurately judge whether the transparency of the car window needs to be adjusted, reducing the misjudgment rate; the system can also flexibly respond to various external environmental changes to ensure the stability of the adjustment effect. It has the characteristics of automatic adjustment, high precision, flexibility and low power consumption, has a wide range of applications, and has very good market prospects.

[0046] The fourth aspect of the present application provides an application of an intelligent dimming film assembly on a rear projection screen, wherein the dimming film serves as an imaging curtain of a projector, a video player or a laser imaging system in a blurred state, and serves as a glass wall in a transparent state.

[0047] According to the above embodiment, when the smart dimming film assembly of the present application is applied to a rear projection screen, it can display background decorative images in a transparent state and can also be used as a glass wall in a conference room. The projection screen, on the other hand, serves as an imaging curtain in an opaque state. In a hazy state, the dimming film has high haze and transmittance, and provides a clear image and high brightness gain, making it suitable for use as a rear projection projector for projectors, video players, and laser imaging systems. The screen can display high-brightness and high-resolution images, with an ultra-wide 140° field of view, while maintaining high brightness and displaying fine details.

[0048] The fifth aspect of the present application provides an application of an intelligent dimming film assembly on a building window, wherein the dimming film is affixed to the surface of the window glass or is affixed to the interlayer of the window glass.

[0049] According to the above-described embodiment, after installing the smart dimming film assembly of the present application on the windows of a building, the color depth of the glass and the intensity of sunlight entering the room can be adjusted, thereby adjusting the indoor lighting to meet the needs while maintaining the light transmission function. When used in commercial spaces, such as in the offices of large command, control, and dispatch centers, it can enhance the corporate image, security, and confidentiality, and create a comfortable working environment. In addition, the use of dimming glass is, to some extent, equivalent to a temperature-controlled building material, which can reduce energy consumption and improve the environmental friendliness of the building.

[0050] Although the implementation scheme of the present application has been disclosed as above, it is not limited to the applications listed in the description and implementation mode. It can be fully applied to various fields suitable for the present application. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present application is not limited to the specific details and illustrations shown and described herein.

Claims

1. A smart dimming film assembly, characterized in that: include: Dimming film; A control module, electrically connected to the dimming film; A photoresistor module, electrically connected to the control module, for monitoring ambient light and feeding back a digital signal to the control module; The steering gear is electrically connected to the control module, and the control module controls the steering gear to rotate at different angles and directions according to the light intensity to control the light transmittance of the dimming film.

2. The smart dimming film assembly according to claim 1, characterized in that: It also includes a knife switch, the servo is electrically connected to the knife switch, the dimming film, the control module, the photoresistor module, the servo and the knife switch form a closed dimming circuit, and the servo drives the knife switch to open and close to realize the connection and disconnection of the dimming circuit, thereby realizing the switching of the dimming film between the blurred and transparent states.

3. The smart dimming film assembly according to claim 2, characterized in that: When the dimming circuit is in a power-off state, the dimming film is in a blurred state.

4. The smart dimming film assembly according to claim 1, characterized in that: The control module is an Arduino Uno single chip microcomputer.

5. The smart dimming film assembly according to claim 1, characterized in that: The dimming film is a liquid crystal molecule film, comprising two layers of transparent conductive ITO-PET support films and a liquid crystal layer sandwiched between the two ITO-PET support films.

6. The smart dimming film assembly according to claim 1, characterized in that: The photoresistor module is an ambient light sensor.

7. The dimming method of the smart dimming film assembly according to any one of claims 2 to 6, characterized in that: The following steps are involved: When the dimming circuit is powered on: When the photoresistor module detects strong ambient light, it feeds back a signal to the control module, and the control module controls the servo to rotate forward and drives the switch to open, so that the dimming circuit is disconnected and the dimming film is in a blurred state; When the photoresistor module detects weak ambient light, it feeds back a signal to the control module, and the control module controls the servo to rotate in the opposite direction and closes the switch, so that the dimming circuit is turned on and the dimming film is in a transparent state; When the dimming circuit is not powered on: the dimming film is in a blurred state.

8. The application of the smart dimming film assembly on vehicle window glass according to any one of claims 2 to 6 is characterized in that: The dimming film is attached to the surface of the vehicle window or attached to the interlayer of the vehicle window.

9. The application of the smart dimming film assembly according to any one of claims 2 to 6 on a rear projection screen, characterized in that: The dimming film is used as an imaging curtain of a projector, a video player or a laser imaging system in a blurred state, and is used as a glass wall in a transparent state.

10. The application of the smart dimming film assembly according to any one of claims 2 to 6 on building windows, characterized in that: The dimming film is pasted on the surface of the window glass or pasted in the interlayer of the window glass.

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