TWI787762B - Smart film control system, control device and smart film product - Google Patents

Abstract

A smart film control system includes a smart film, a control device and a client device. The smart film is for receiving driving signal. The control device electrically coupled to the smart film is for controlling voltage amplitude of the driving signal. The client device communicately coupled to the control device is for operating the control device to change transmittance of the smart film according to the driving signal. When the control device determines that the voltage amplitude of the driving signal is smaller than a threshold value, one unit variation of the transmittance for the smart film corresponds to a first voltage variation. When the control device determines that the voltage amplitude of the driving signal is larger than or equal to the threshold value, one unit variation of the transmittance for the smart film corresponds to a second voltage variation which is larger than the first voltage variation.

Description

Intelligent dimming film control system, control device and intelligent dimming film device

This disclosure document provides an intelligent dimming film control system, a control device, and an intelligent dimming film device, especially an intelligent dimming film control system, a control device, and an intelligent dimming that can generate control signals of different frequencies and different voltage ranges membrane device.

In the past, smart films were mainly made of transparent indium tin oxide (ITO) conductive film. However, due to the indium tin oxide (ITO) conductive film is not heat-resistant, it cannot be effectively used in outdoor venues.

Compared with indium tin oxide conductive film, although the relatively new conductive film on the market has heat-resistant and flexible material properties, the relationship between the light transmittance and the applied voltage is not linear. Therefore, how to make users feel linear dimming when operating the smart film device is a problem to be solved in the industry.

This disclosure document provides an intelligent light-adjustable film control system, which includes an intelligent light-adjustable film, a control device, and a client device. The smart dimming film is set on the substrate to receive the driving signal. The control device is electrically coupled to the intelligent dimming film, and is used for controlling the voltage range of the driving signal. The client device is communicatively coupled to the control device, and is used to operate the control device so that the smart dimming film changes the light transmittance according to the driving signal. When the voltage range of the driving signal is less than the voltage threshold, the change in light transmittance per unit of the smart dimming film corresponds to the first voltage change in the voltage range; when the voltage range of the driving signal is greater than or equal to the voltage threshold, the smart dimming film A unit of light transmittance variation corresponds to a second voltage variation in the voltage range, and the second voltage variation is greater than the first voltage variation.

This disclosure document provides a control device, which is electrically coupled to the smart dimming film, and used to control the voltage range of the driving signal received by the smart dimming film, wherein the control device includes a processor and a power module. The processor is used to generate a plurality of pulse signals. The power module is coupled to the processor, and is used for outputting different power driving signals according to the pulse signals. When the voltage range of the driving signal is less than the voltage threshold, the light transmittance change per unit of the smart dimming film corresponds to the first voltage change in the voltage range; when the voltage range of the driving signal is greater than or equal to the voltage threshold, the smart dimming film A unit of light transmittance variation corresponds to a second voltage variation in the voltage range, and the second voltage variation is greater than the first voltage variation.

This disclosure document provides an intelligent light-adjustable film device, which includes an intelligent light-adjustable film and a control device. The intelligent dimming film is arranged on the substrate to receive driving signals. The control device is electrically coupled to the smart light-adjusting film for controlling the voltage range of the driving signal, and the smart light-adjusting film is used for changing the light transmittance according to the driving signal. When the voltage range of the driving signal is smaller than the voltage threshold, the light transmittance variation per unit of the smart dimming film corresponds to the first voltage variation in the voltage range. When the voltage range of the driving signal is greater than or equal to the voltage threshold, the light transmittance change per unit of the smart dimming film corresponds to the second voltage change in the voltage range, and the second voltage change is greater than the first voltage change.

One of the advantages of the above-mentioned smart dimming film control system, control device and smart dimming film device is to apply a non-fixed voltage change to the smart dimming film, so that the user can adjust the light transmittance of the enabling dimming film , it can be felt that the light transmittance changes linearly.

The following is a detailed description of the embodiments in conjunction with the accompanying drawings, but the described specific embodiments are only used to explain the present invention, not to limit the present invention, and the description of the structure and operation is not used to limit the order of its execution, any Devices with equivalent functions produced by recombining components are within the scope of the disclosure of the present invention.

The terms (terms) used throughout the specification and claims, unless otherwise noted, generally have the ordinary meaning of each term used in the field, in the disclosed content and in the special content. Certain terms used to describe the disclosure are discussed below or elsewhere in this specification to provide those skilled in the art with additional guidance in describing the disclosure.

FIG. 1 is a simplified functional block diagram of a smart switchable film control system 100 according to some embodiments of this disclosure. As shown in FIG. 1 , the smart dimming film control system 100 includes a smart film module 110 , a control device 120 and a client device 130 . The smart film module 110 is electrically connected to the control device 120 , and the client device 130 is communicatively coupled to the control device 120 .

In operation, the smart film module 110 is used for receiving the driving signal DS to change the light transmittance according to the driving signal DS. The control device 120 is used for generating the driving signal DS. The client device 130 is used to operate the control device 120 to adjust the voltage range of the driving signal DS.

In some embodiments, the client device 130 may be a smartphone or a tablet computer. The client device 130 can control the control device 120 to change the voltage range of the driving signal DS by running application software (APP).

FIG. 2 is a schematic diagram of a smart membrane module 110 according to some embodiments of the present disclosure. FIG. 3 is a graph showing the relationship between voltage and light transmittance of the smart film module 110 according to some embodiments of the disclosure. As shown in FIG. 2 , the smart film module 110 includes a smart dimming film 111 and a transparent substrate 112 , and the smart dimming film 111 is disposed on the surface of the transparent substrate 112 .

In some embodiments, the light transmittance of the smart dimming film 111 will change as the voltage applied to the smart film module 110 increases. For example, referring to FIG. 3, when no voltage is applied to the smart dimming film 111, or when the applied voltage is less than a certain threshold (for example, 30 volts), the smart dimming film 111 will be on the transparent substrate 112. An opaque haze layer is formed on the surface, and when the smart dimming film 111 receives a sufficient voltage (for example, above 30 volts), the light transmittance of the smart dimming film 111 will begin to increase as the voltage increases.

However, in some embodiments, the relationship between the voltage of the smart dimming film 111 and the light transmittance is not completely linear. For example, as shown in FIG. 3 , when the applied voltage varies between 90 volts and 127 volts, the light transmittance of the smart dimming film 111 changes more slowly.

Therefore, in order to allow users to feel the linearity of dimming when operating the smart film module 110, when the voltage range of the driving signal DS is less than the voltage threshold (for example, 90 volts), the light transmittance of one unit of the smart dimming film 111 The change amount corresponds to the first voltage change amount of the driving signal DS, and when the voltage range of the driving signal DS is greater than or equal to the voltage threshold (for example, 90 volts), the light transmittance change amount of one unit of the smart dimming film will correspond to the driving A second voltage variation of the signal DS, and the second voltage variation is greater than the first voltage variation.

For example, when the voltage range of the driving signal DS is between 30 volts and 90 volts, the light transmittance of the smart dimming film 111 will be between 0% and 90%. would correspond to a voltage change of about 1.5 volts. When the driving signal DS voltage ranges from 90 volts to 127 volts, the light transmittance of the smart dimming film 111 will be between 90% and 100%. At this time, every 1% change in light transmittance will correspond to approximately A voltage change of 3.7 volts. As used herein, "about", "approximately" or "approximately" generally refers to the error or range of the index value generally within about 20%, preferably within about 10%, and more preferably It is within about five percent. If there is no explicit statement in the text, the numerical values mentioned are regarded as approximate values, that is, the error or range expressed by "about", "approximately" or "approximately".

That is to say, when the control device 120 adjusts the light transmittance of different sections, it will correspond every 1% change in light transmittance to different voltage changes, so that the user can linearly adjust the light transmittance during the operation. rate changes.

In addition, in some embodiments, because the light transmittance of the smart dimming film 111 does not change significantly when the light transmittance of the smart dimming film 111 is below 30 volts, when the operating control device 120 changes the light transmittance of the smart dimming film 111, the voltage range of the driving signal DS It will be at least greater than or equal to 30 volts.

FIG. 4 is a simplified functional block diagram of the control device 120 according to some embodiments of the disclosure. As shown in FIG. 4, the control device 120 includes a processor 121, a power module 122, a rectifier 123, a voltage drop converter 124, a DC transformer 125, an input/output interface 126 (hereinafter referred to as the I/O interface 126) and a communication interface. 127.

In operation, the control device 120 converts the received AC voltage AC into a DC voltage through the rectifier 123, and converts the above-mentioned DC voltage by using the step-down converter 124 (Buck Converter) and the DC transformer 125 (DC-to-DC Converter). is an operating voltage for the processor 121 to operate.

The processor 121 is used to receive the control command CS through the I/O interface 126 or the communication interface 127, and generate a plurality of pulse wave signals PWMa, PWMb, PWMc to the power module 122 according to the control command CS, so that the power module 122 according to The pulse signals PWMa, PWMb, PWMc generate the driving signal DS.

In some embodiments, the processor 121 may be implemented by a microprocessor (MCU) or other suitable processors. The I/O interface 126 can be used for one or more external input/output devices (eg, a mouse, a keyboard, or a touch screen) to transmit or receive control commands.

In some embodiments, the communication interface 127 includes a wireless communication interface, such as bluetooth (BLUETOOTH) or wireless network (WIFI), and/or a wired communication interface, such as an Ethernet interface or a universal serial bus ( USB).

The operation of generating the pulse signals PWMa, PWMb, and PWMc by the processor 121 will be described in detail below in conjunction with FIG. 5 . FIG. 5 illustrates a dimming mode control method 500 according to some embodiments of the disclosure. In some embodiments, the processor 121 executes the steps S501 - S505 in the dimming mode control method 500 through a field oriented control (Field Oriented Control) algorithm.

In the process S501, the processor 121 generates a corresponding reference signal according to the control command CS. For example, the control command CS may include various waveform parameters (eg, amplitude and frequency), and the processor 121 will generate corresponding reference signals according to the above-mentioned parameters of the control command CS.

In the process S502, the processor 121 performs Park's Transformation to calculate a corresponding first reference voltage (hereinafter referred to as the reference voltage Vα) and a second reference voltage (hereinafter referred to as the reference voltage Vβ) according to the phase of the reference signal.

In the process S503, the processor 121 calculates a first voltage space vector, a second voltage space vector and a third voltage space vector according to the reference voltage Vα and the reference voltage Vβ. For concise description, the first voltage space vector, the second voltage space vector and the third voltage space vector will be referred to as voltage vectors Va, Vb and Vc respectively.

In some embodiments, the processor 121 synthesizes the reference voltage Vα and the reference voltage Vβ according to different ratios into a required voltage space vector. For example, the voltage vector Va may include 1 unit of the reference voltage Vα and 2 units of the reference voltage Vβ, and the voltage vector Vb may include 2 units of the reference voltage Vα and 1 unit of the reference voltage Vβ.

In the process S504, the processor 121 executes a space vector modulation (SVPWM) algorithm to calculate the corresponding duty ratios of the pulse signal PWMa, the pulse signal PWMb, and the pulse signal PWMc according to the voltage vectors Va, Vb, and Vc, respectively.

In the process S505 , the processor 121 outputs the pulse signals PWMa, PWMb, and PWMc to the power module 122 .

In some embodiments, the power module 122 includes a plurality of power switch elements (not shown), which are used to adjust the corresponding duty ratios of the received pulse signal PWMa, pulse signal PWMb, and pulse signal PWMc respectively. The length of time the switching element is turned on and off. In some embodiments, the above-mentioned power switching elements may be realized by an inverter circuit.

In short, the processor 121 can make the power module 122 synthesize the driving signal DS with any size and frequency by modulating the duty cycle of the pulse signals PWMa, PWMb and PWMc.

Therefore, when the voltage range of the driving signal DS is between 30 volts and 90 volts and the light transmittance of the smart dimming film 111 is between 0% and 90%, if the user wants to continue adjusting the light transmittance within this range , the power module 122 outputs the driving signal DS with the first output power variation corresponding to the first voltage variation (for example, the aforementioned voltage variation of 1.5 volts).

When the voltage range of the driving signal DS is between 90 volts and 127 volts, and the light transmittance of the smart dimming film 111 is between 90% and 100%, if the user wants to continue adjusting the light transmittance within this range, then The power module 122 outputs the driving signal DS with the second output power variation corresponding to the second voltage variation (for example, the aforementioned voltage variation of 3.7 volts).

That is to say, when the control device 120 determines that the voltage range of the driving signal DS is less than the voltage threshold (for example, 90 volts), the first voltage variation corresponds to the first output power variation of the power module 122; When the voltage range of the signal DS is greater than or equal to the voltage threshold (for example, 90V), the second voltage variation corresponds to the second output power variation of the power module 122, and the second output power variation is greater than the first output power variation .

In addition, generally speaking, under the same voltage condition, the lower the frequency of the driving signal DS, the higher the light transmittance of the smart dimming film 111 . Therefore, the control device 120 of this disclosure can provide a voltage signal with a lower frequency than the commonly used 60 Hz AC voltage AC by adjusting the frequency of the driving signal DS, so that the smart membrane module 110 can generate better transparency.

However, since the driving signal DS is a sine wave signal, the light transmittance of the smart dimming film 111 will also change as the voltage value of the sine wave oscillates up and down. Therefore, if the light transmittance of the smart light-adjusting film 111 changes too slowly, human eyes will feel flicker and feel uncomfortable. Therefore, in order to make it difficult for human eyes to detect, the control device 120 can adjust the frequency of the driving signal DS to be greater than or equal to 30 Hz.

Although the content of the disclosure has been disclosed above in terms of implementation, it is not intended to limit the content of the disclosure. Any person with ordinary knowledge in the field may make various modifications and modifications without departing from the spirit and scope of the disclosure. Therefore, the scope of protection of this disclosure should be defined by the scope of the appended patent application.

100: Intelligent dimming film control system 110:Smart membrane module 120: Control device 130: client device 111:Smart dimming film 112: Transparent substrate 121: Processor 122: Power module 123: rectifier 124: Voltage drop converter 125: DC transformer 126: Input/output interface 127: communication interface 500: Dimming mode control method S501~S505: Process PWMa, PWMb, PWMc: pulse signal AC: AC voltage CS: control command DS: drive signal

FIG. 1 is a schematic diagram of a control system for an intelligent light-adjustable film according to some embodiments of the disclosure. FIG. 2 is a schematic diagram of a smart membrane module according to some embodiments of the disclosure. FIG. 3 is a graph showing the relationship between voltage and light transmittance of a smart film module according to some embodiments of the disclosure. FIG. 4 is a simplified functional block diagram of a control device according to some embodiments of the disclosure. FIG. 5 is a flow chart of operations of a processor according to some embodiments of the disclosure.

100: Intelligent dimming film control system

110:Smart membrane module

120: Control device

130: client device

DS: drive signal

Claims (18)

An intelligent dimming film control system, comprising: an intelligent dimming film disposed on a substrate for receiving a driving signal; a control device electrically coupled to the intelligent dimming film for controlling the driving signal a voltage range; and a client device, communicatively coupled to the control device, for operating the control device so that the smart dimming film changes light transmittance according to the driving signal, wherein, when the voltage of the driving signal When the range is less than a voltage threshold, the light transmittance change per unit of the smart dimming film corresponds to a first voltage change in the voltage range; when the voltage range of the driving signal is greater than or equal to the voltage threshold, the smart The amount of light transmittance change per unit of the dimming film corresponds to a second voltage change in the voltage range, and the second voltage change is greater than the first voltage change, wherein the driving signal is of a frequency greater than or equal to 30 Hz sine wave. The intelligent dimming film control system as described in claim 1, wherein the control device includes: a processor for generating a plurality of pulse signals; and an integrated power module (Integrated Power Module), coupled to the processor, The driving signals for outputting different powers according to the pulse signals, wherein When the voltage range of the driving signal is less than the voltage threshold, the first voltage variation corresponds to a first output power variation of the power module; when the voltage range of the driving signal is greater than or equal to the voltage threshold, The second voltage variation corresponds to a second output power variation of the power module, and the second output power variation is greater than the first output power variation. The intelligent light-adjustable film control system as described in claim 2, wherein the processor generates the pulse signals by using a space vector modulation (SVPWM) algorithm. The intelligent light-adjustable film control system according to claim 1, wherein when the control device is operated to change the light transmittance of the intelligent light-adjustable film, the voltage range of the driving signal is greater than or equal to 30 volts. The intelligent dimming film control system as described in Claim 1, wherein the client device is a smart phone or a tablet computer. The intelligent dimming film control system as described in claim 1, wherein: when the voltage range is between 30 volts and 90 volts, the light transmittance of the intelligent dimming film is between 0% and 90%; when the When the voltage range is between 90 volts and 127 volts, the light transmittance of the smart dimming film is between 90% and 100%. A control device electrically coupled to an intelligent dimming film for controlling a voltage range of a driving signal received by the intelligent dimming film, wherein the control device includes: a processor for generating a plurality of pulse waves signal; a power module (Integrated Power Module), coupled to the processor, for outputting the drive signal with different powers according to the pulse signals, wherein when the voltage range of the drive signal is less than a voltage threshold, the The light transmittance change per unit of the smart light-adjustable film corresponds to a first voltage change in the voltage range; The rate change corresponds to a second voltage change in the voltage range, and the second voltage change is greater than the first voltage change. The control device according to claim 7, wherein when the voltage range of the driving signal is smaller than the voltage threshold, the first voltage variation corresponds to a first output power variation of the power module. The control device according to claim 8, wherein when it is judged that the voltage range of the drive signal is greater than or equal to the voltage threshold, the second voltage variation corresponds to a second output power variation of the power module, and the The second output power variation is greater than the first output power variation. The control device according to claim 7, wherein the driving signal is a sine wave with a frequency greater than or equal to 30 Hz. The control device according to claim 7, wherein when the control device is operated to change the light transmittance of the smart dimming film, the voltage range of the driving signal is greater than or equal to 30 volts. The control device as claimed in claim 7, wherein the processor utilizes a space vector modulation (SVPWM) algorithm to generate the pulse signals. The control device as described in claim 7, wherein: when the voltage range is between 30 volts and 90 volts, the light transmittance of the smart dimming film is between 0% and 90%; when the voltage range is between At 90 volts to 127 volts, the light transmittance of the smart dimming film is between 90% and 100%. An intelligent dimming film device, comprising: an intelligent dimming film disposed on a substrate for receiving a driving signal; and a control device electrically coupled to the intelligent dimming film for controlling the driving signal A voltage range of the smart dimming film, and the smart dimming film is used to change the light transmittance according to the driving signal, wherein when the voltage range of the driving signal is less than a voltage threshold, the light transmittance change amount of one unit of the smart dimming film A first voltage corresponding to the voltage range Voltage change; when the voltage range of the driving signal is greater than or equal to the voltage threshold, the light transmittance change of one unit of the smart dimming film corresponds to a second voltage change in the voltage range, and the second voltage The variation is greater than the first voltage variation, wherein the driving signal is a sine wave with a frequency greater than or equal to 30 Hz. The smart dimming film device as described in claim 14, wherein the control device includes: a processor, used to generate a plurality of pulse signals; and a power module, coupled to the processor, used to The wave signal outputs the drive signal with different power, wherein when the voltage range of the drive signal is less than the voltage threshold, the first voltage change corresponds to a first output power change of the power module; when the drive signal When the voltage range is greater than or equal to the voltage threshold, the second voltage variation corresponds to a second output power variation of the power module, and the second output power variation is greater than the first output power variation. The smart light-adjustable film device as claimed in claim 15, wherein the processor generates the pulse signals by using a space vector modulation (SVPWM) algorithm. The smart light-adjusting film device according to claim 14, wherein when the control device is operated to change the light transmittance of the smart light-adjusting film, the drive The voltage range of the signal is greater than or equal to 30 volts. The smart dimming film device as described in claim 14, wherein: when the voltage range is between 30 volts and 90 volts, the light transmittance of the smart dimming film is between 0% and 90%; when the voltage When the range is between 90 volts and 127 volts, the light transmittance of the smart dimming film is between 90% and 100%.

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