An electrochromic glass intelligent dimming system

Abstract

The utility model relates to a kind of electrochromic glass intelligent dimming system, adopt three sensor architecture including intermediate ambient light sensor, left ambient light sensor and right ambient light sensor, synchronous trigger sampling is realized by the GPIO pin of main control module, effectively solve the problem of limited viewing angle and insufficient dynamic range existing in single sensor detection;Meanwhile, motor driving chip cooperates with the mechanical structure of motor and potentiometer, the voltage demand of different EC membrane can be matched by adjusting motor stroke, without complex DC-DC or H bridge circuit, wide voltage adaptation and continuous regulation function are realized. More accurate light environment evaluation is realized, which provides accurate input basis for dimming control;Reduce system complexity and cost, also through the wide voltage adaptation ability, the versatility of system is enhanced;Automatic control and continuous regulation function are realized through pure hardware connection and structure design, avoid complex algorithm control, improve the reliability and response speed of system.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to an electrochromic glass intelligent dimming system. Background Technology

[0002] Electrochromic glass is a smart material that can change its optical properties by applying voltage. Its core component, the EC film, reversibly changes its light transmittance under voltage, and it is widely used in areas requiring intelligent dimming, such as building curtain walls and automotive sunroofs. Existing electrochromic glass dimming systems mostly use a single ambient light sensor for light intensity detection. This approach suffers from significant limitations in viewing angle and dynamic range, failing to accurately perceive the actual light intensity received by the human eye under complex lighting conditions. Traditional driving circuits typically require complex DC-DC converters or H-bridge circuits to achieve voltage regulation, resulting in complex system structures and high costs. Utility Model Content

[0003] In view of the above problems, this utility model provides an electrochromic glass intelligent dimming system.

[0004] To achieve the above objectives, this application provides an electrochromic glass intelligent dimming system, including an electrochromic glass driving module, an ambient light detection module, and a main control module; The electrochromic glass driving module includes a motor driving chip and a motor. The motor driving chip is connected to the main control module to receive control signals. The motor is connected to the motor driving chip, and its output shaft is connected to a potentiometer through a mechanical structure to adjust the voltage applied to the electrochromic glass. The ambient light detection module includes a middle ambient light sensor, a left ambient light sensor, and a right ambient light sensor. The middle ambient light sensor, the left ambient light sensor, and the right ambient light sensor are connected to the ADC sampling pin of the main control module. The main control module is configured to synchronously trigger the middle ambient light sensor, the left ambient light sensor, and the right ambient light sensor to sample data through the GPIO pin. The main control module includes a microcontroller (MCU), which contains multiple GPIO pins and an ADC sampling channel. The GPIO pins are used to output PWM signals to the motor driver chip and to synchronously trigger the ambient light sensor. The ADC sampling channel is used to acquire the analog voltage signal output by the ambient light sensor.

[0005] In some embodiments, the electrochromic glass driving module includes a first electrochromic film control circuit and a second electrochromic film control circuit that are independent of each other. The first electrochromic film control circuit and the second electrochromic film control circuit are controlled by the GPIO pins of the main control module, respectively.

[0006] In some embodiments, the system further includes a power management module, which includes an LGS4056H lithium battery charging management chip. The LGS4056H lithium battery charging management chip integrates charging management functions and is connected to a charging indicator LED for displaying the charging status.

[0007] In some embodiments, the power management module further includes an SDB628 boost DC-DC converter and a CJ6205B33FLDO chip. The SDB628 boost DC-DC converter is packaged in an SOT-23-6 package, and the CJ6205B33FLDO chip is used to provide a 3.3V voltage output.

[0008] In some embodiments, the power management module further includes a power supply switching circuit, which includes a MOSFET switching array composed of Q2KPMOSAD3401A and PMOSAO3402A for power supply switching.

[0009] In some embodiments, the system also includes a DS1302Z real-time clock chip, which is packaged in an SOP-8 package and connected to the main control module via a serial interface to provide timing and calendar functions.

[0010] In some embodiments, the system further includes a decoding chip, which has pins for receiving the MCLK master clock signal and pins for receiving DSDIN digital serial data input. The MCLK master clock signal provides a synchronization reference for the internal circuitry of the decoding chip.

[0011] In some embodiments, the middle ambient light sensor is configured to detect ambient light illuminance; the left ambient light sensor is configured to detect light illuminance behind the left eye lens; and the right ambient light sensor is configured to detect light illuminance behind the right eye lens.

[0012] In some embodiments, the main control module triggers three ambient light sensors to sample data via GPIO pins.

[0013] Unlike existing technologies, the above solution achieves intelligent dimming control of electrochromic glass through the coordinated operation of an electrochromic glass driving module, an ambient light detection module, and a main control module. It employs a three-sensor architecture comprising a central ambient light sensor, a left ambient light sensor, and a right ambient light sensor. μs-level synchronous triggering sampling is achieved through the GPIO pins of the main control module, effectively solving the problems of limited viewing angle and insufficient dynamic range inherent in single-sensor detection. Simultaneously, the motor driver chip, in conjunction with the mechanical structure of the motor and potentiometer, allows for matching the voltage requirements of different EC films by adjusting the motor stroke, eliminating the need for complex DC-DC or H-bridge circuits and achieving wide voltage adaptation and continuous adjustment. This results in more accurate light environment assessment, providing precise input for dimming control; reduced system complexity and cost; and enhanced system versatility through wide voltage adaptation. Automatic control and continuous adjustment are achieved through pure hardware connection and structural design, avoiding complex algorithm control and improving system reliability and response speed.

[0014] The above description of the utility model is merely an overview of the technical solution of this utility model. In order to enable those skilled in the art to better understand the technical solution of this utility model and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this utility model easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this utility model. Attached Figure Description

[0015] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the present invention and other related contents, and should not be considered as limitations on the present invention.

[0016] In the accompanying drawings of the instruction manual: Figure 1 This is a schematic diagram of the dimming system modules described in a specific implementation. Figure 2 A schematic diagram of the power supply management module described in a specific implementation; Figure 3 A schematic diagram of the real-time clock chip described in a specific implementation; Figure 4 A schematic diagram of the SDB628 boost DC-DC converter, CJ6205B33F LDO chip, and power supply switch circuit described in the specific implementation embodiment; Figure 5 This is a schematic diagram of the decoding chip described in a specific embodiment; Figure 6 This is a schematic diagram of the first electroluminescent membrane control circuit in a specific implementation method; Figure 7This is a schematic diagram of the second electroluminescent membrane control circuit in a specific implementation method; Figure 8 This is a schematic diagram of the intermediate ambient light sensor described in a specific implementation method; Figure 9 A schematic diagram of the right ambient light sensor described in the specific implementation method; Figure 10 This is a schematic diagram of the left ambient light sensor as described in a specific implementation. Detailed Implementation

[0017] To illustrate in detail the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this utility model, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this utility model and are therefore intended to limit the scope of protection of this utility model.

[0018] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0019] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0020] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0021] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0022] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0023] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0024] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0025] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0026] Please see Figures 1 to 10 This embodiment provides an electrochromic glass intelligent dimming system, including an electrochromic glass driving module, an ambient light detection module, and a main control module; The electrochromic glass driving module includes a motor driving chip and a motor. The motor driving chip is connected to the main control module to receive control signals. The motor is connected to the motor driving chip, and its output shaft is connected to a potentiometer through a mechanical structure to adjust the voltage applied to the electrochromic glass. The ambient light detection module includes a middle ambient light sensor, a left ambient light sensor, and a right ambient light sensor. The middle ambient light sensor, the left ambient light sensor, and the right ambient light sensor are connected to the ADC sampling pin of the main control module. The main control module is configured to synchronously trigger the middle ambient light sensor, the left ambient light sensor, and the right ambient light sensor to sample data through the GPIO pin. The main control module includes a microcontroller (MCU), which contains multiple GPIO pins and an ADC sampling channel. The GPIO pins are used to output PWM signals to the motor driver chip and to synchronously trigger the ambient light sensor. The ADC sampling channel is used to acquire the analog voltage signal output by the ambient light sensor.

[0027] In this embodiment, the electrochromic glass driving module receives PWM control signals from the main control module via a motor driver chip, driving the motor to rotate and causing a potentiometer to adjust the output voltage. This output voltage is directly applied to the EC film of the electrochromic glass. The motor driver chip uses a dedicated driver chip instead of a traditional DC-DC or H-bridge circuit, and adjusts the potentiometer resistance through a mechanical transmission mechanism, achieving precise control of the EC film's operating voltage. The electrochromic glass driving module has overvoltage protection, and its voltage adjustment range covers the entire operating range of the EC film. By adjusting the motor stroke, it can adapt to the voltage requirements of EC films of different specifications, achieving wide voltage adaptation and continuous adjustment characteristics.

[0028] The ambient light detection module employs a three-sensor collaborative detection architecture, comprising a central ambient light sensor, a left ambient light sensor, and a right ambient light sensor. The central ambient light sensor detects the external ambient light intensity, while the left and right sensors detect the actual light intensity behind the transparent lens. The three sensors achieve μs-level synchronous triggering sampling via the GPIO pins of the main control module, and their output analog voltage signals are acquired through an ADC sampling channel. This layout effectively solves the problems of limited viewing angle and insufficient dynamic range inherent in single-sensor detection, achieving more accurate light environment assessment through multi-point sampling.

[0029] The main control module uses a microcontroller (MCU) as its control core. Multiple GPIO pins are used to output PWM signals to the motor driver chip and synchronously trigger the ambient light sensor. The built-in ADC sampling channel is responsible for acquiring the analog voltage signals output by the three ambient light sensors. The MCU directly controls the coordinated operation of each module through hardware connections, achieving the system's automatic dimming function without complex algorithm processing.

[0030] This embodiment achieves intelligent dimming functionality through the hardware collaboration of three modules: when the ambient light intensity changes, three ambient light sensors synchronously sample to acquire accurate illumination data. The main control module controls the motor drive chip via a PWM signal based on the collected data, driving the motor to adjust the working voltage of the EC film using a potentiometer, thereby changing the light transmittance of the electrochromic glass. This pure hardware architecture enables continuous dimming control over a wide voltage range. Furthermore, the collaborative detection of the three sensors solves the measurement accuracy problem of traditional single-sensor systems. The entire system achieves automatic dimming directly through hardware connections, offering advantages such as fast response, high reliability, and strong adaptability.

[0031] In some embodiments, the electrochromic glass driving module includes a first electrochromic film control circuit and a second electrochromic film control circuit that are independent of each other. The first electrochromic film control circuit and the second electrochromic film control circuit are controlled by the GPIO pins of the main control module, respectively.

[0032] In this embodiment, the first electrochromic film control circuit and the second electrochromic film control circuit refer to two completely independent voltage regulation circuits. Each circuit includes a complete hardware combination of a motor driver chip, a motor, and a potentiometer, respectively controlling two independent electrochromic glass areas. The dual-path independent control architecture achieves independent control through different GPIO pins of the main control module, enabling the two circuits to work simultaneously without interference. The first and second electrochromic film control circuits maintain complete symmetry in hardware structure. Each circuit can independently complete all functions from signal reception and motor driving to voltage regulation, precisely controlling the resistance change of the corresponding potentiometer through its respective mechanical transmission mechanism.

[0033] In this embodiment, the GPIO pins of the main control module play a crucial role in regional control. Different GPIO pins are connected to the enable terminals of the driver chips for the first and second electroluminescent film control circuits, respectively, to achieve parallel control of the two circuits by outputting independent PWM control signals. This pin allocation method ensures that the two control circuits can perform differentiated dimming operations based on their respective light intensity detection results, providing the system with flexible zone control capabilities.

[0034] This embodiment achieves parallel and precise control of two electrochromic glass regions by setting up independent first and second electrochromic film control circuits and utilizing multiple GPIO pins of the main control module for independent control. When the system is operating, the main control module outputs independent PWM control signals through corresponding GPIO pins based on the ambient light sensor detection results for each region, driving the corresponding motor control circuits to operate, thereby achieving independent adjustment of the light transmittance of different regions. This maintains the system's simplicity and reliability, improves the flexibility and applicability of dimming control, and is particularly suitable for complex application scenarios requiring independent dimming of different zones. Furthermore, the parallel processing at the hardware level improves the overall response speed and control accuracy of the system.

[0035] In some embodiments, the system further includes a power management module, which includes an LGS4056H lithium battery charging management chip. The LGS4056H lithium battery charging management chip integrates charging management functions and is connected to a charging indicator LED for displaying the charging status.

[0036] In this embodiment, the power supply management module refers to the hardware unit that provides power supply and management for the entire electrochromic glass intelligent dimming system. The core component, the LGS4056H lithium battery charging management chip, is a linear charging chip designed specifically for single-cell lithium batteries. The chip integrates a complete charging management circuit, which can automatically control key aspects such as constant current charging, constant voltage charging, and charging cutoff during the charging process. The charging indicator LED is directly connected to the status output pin of the LGS4056H chip through hardware circuitry. This indicator uses different combinations of on / off states to represent the battery's charging status, fully charged status, or fault status, providing users with intuitive power status feedback.

[0037] This embodiment provides a stable and reliable power supply for the electrochromic glass intelligent dimming system by adding a power management module centered on the LGS4056H lithium battery charging management chip. When an external power source is connected, the LGS4056H chip automatically initiates the charging management process, safely charging the lithium battery through its internal integrated control circuit, while simultaneously driving the charging indicator LED to display the current charging status. Once fully charged, it automatically switches to maintenance mode to ensure the battery is not overcharged. This simplifies the system's power management structure and significantly improves the system's safety and reliability through hardware-level charge and discharge protection mechanisms, enabling the entire dimming system to operate stably under various power conditions, while providing users with a clear and concise power status indication function.

[0038] In some embodiments, the power management module further includes an SDB628 boost DC-DC converter and a CJ6205B33FLDO chip. The SDB628 boost DC-DC converter is packaged in an SOT-23-6 package, and the CJ6205B33FLDO chip is used to provide a 3.3V voltage output.

[0039] In this embodiment, the power management module further integrates an SDB628 boost DC-DC converter and a CJ6205B33F LDO chip, forming a complete power management solution. The SDB628 boost DC-DC converter, in a compact SOT-23-6 package, is a high-efficiency current-mode boost converter. Its function is to boost the unstable voltage output from the lithium battery to the operating voltage level required by the system, providing a stable high-voltage power supply for subsequent circuits. The CJ6205B33F LDO chip, as a low-dropout linear regulator, is specifically designed to generate a precise and stable 3.3V voltage from the boosted voltage or the direct output voltage from the battery. This voltage directly provides a clean operating power supply for core low-power devices in the system, such as the main control module and the ambient light sensor.

[0040] This embodiment constructs a highly efficient and stable two-stage power supply architecture by combining the SDB628 boost DC-DC converter and the CJ6205B33F LDO chip in the power management module. When the system is operating, the SDB628 first boosts the battery voltage to a suitable value, and then the CJ6205B33F LDO chip performs secondary voltage regulation and noise filtering, outputting a precise 3.3V voltage to supply the system's sensitive electronic components. This power supply design not only ensures a stable and reliable operating voltage for the system under various battery voltage conditions but also reduces system power consumption through efficient power conversion. Furthermore, the compact package facilitates miniaturization, providing excellent power assurance for the entire electrochromic glass intelligent dimming system.

[0041] In some embodiments, the power management module further includes a power supply switching circuit, which includes a MOSFET switching array composed of Q2KPMOSAD3401A and PMOSAO3402A for power supply switching.

[0042] In this embodiment, the power supply switching circuit refers to a power control array composed of specific types of MOSFET switches, with Q2KPMOSAD3401A and PMOSAO3402A serving as core switching elements, respectively controlling the power supply paths of different functional modules in the system. These MOSFET switches achieve circuit on / off control through their inherent semiconductor characteristics. When the gate receives an enable signal from the main control module, the corresponding switch turns on or off, thereby precisely controlling the power supply state of subsequent circuits. This switch array design enables the system to implement independent power management for each functional module, avoiding unnecessary power consumption waste.

[0043] This embodiment achieves refined power management for each functional module of the system by integrating a MOSFET switch array composed of Q2KPMOSAD3401A and PMOSAO3402A into the power management module. When the system is in operation, the main control module outputs control signals through GPIO pins according to actual needs, driving the corresponding MOSFET switches to turn on and provide operating power to the designated functional modules; when some modules are idle, the power supply path is cut off by turning off the corresponding switches. This power management method not only significantly reduces the standby power consumption of the system, but also improves the stability and reliability of the system through hardware-level power isolation, while providing the system with flexible power configuration capabilities, enabling the electrochromic glass intelligent dimming system to achieve optimal energy efficiency management while ensuring performance.

[0044] In some embodiments, the system also includes a DS1302Z real-time clock chip, which is packaged in an SOP-8 package and connected to the main control module via a serial interface to provide timing and calendar functions.

[0045] In this embodiment, the DS1302Z real-time clock chip is a professional timing chip in a standard SOP-8 package. It integrates a high-precision oscillation circuit and calendar calculation logic, and establishes a communication connection with the main control module through a dedicated serial interface. The real-time clock chip has an independent power management mechanism, allowing it to maintain continuous operation of the timing function even when the main system power is disconnected, ensuring the continuous provision of accurate time information such as year, month, day, hour, minute, and second. The DS1302Z chip stores time data through its integrated register set, and the main control module can read or set these time parameters through a simple serial communication protocol.

[0046] This embodiment integrates the DS1302Z real-time clock chip, adding precise time management functionality to the electrochromic glass intelligent dimming system. When the system is operating, the main control module obtains the current time information from the DS1302Z chip via a serial interface and intelligently controls the dimming behavior in conjunction with a preset time strategy. The introduction of the time management mechanism allows the system to automatically adjust its dimming strategy according to different time periods, such as automatically reducing light transmittance at night or activating energy-saving mode during specific periods, thereby optimizing the system's energy consumption while ensuring user comfort. The addition of the real-time clock function significantly enhances the system's intelligence level, providing the electrochromic glass dimming system with time-based intelligent control capabilities.

[0047] In some embodiments, the system further includes a decoding chip, which has pins for receiving the MCLK master clock signal and pins for receiving DSDIN digital serial data input. The MCLK master clock signal provides a synchronization reference for the internal circuitry of the decoding chip.

[0048] In this embodiment, the decoding chip refers to a dedicated integrated circuit (ASIC) with digital audio signal processing capabilities. Its MCLK master clock signal pin receives a high-precision clock signal provided externally. This clock signal serves as the synchronization reference for all digital circuits within the decoding chip, ensuring timing consistency in processing stages such as data sampling, digital filtering, and digital-to-analog conversion. The DSDIN digital serial data input pin receives digital audio data streams from external audio sources, transmits them according to a specific serial protocol format, and is accurately sampled and decoded under the synchronous control of the MCLK master clock signal. Through this clock synchronization mechanism, the decoding chip ensures the integrity and processing accuracy of the digital audio data, providing the system with high-quality audio processing capabilities.

[0049] This embodiment expands the audio processing capabilities of the electrochromic glass smart dimming system by integrating a decoding chip with MCLK and DSDIN interfaces. When the system receives a digital audio signal, an external master clock provides a precise timing reference for the decoding chip via the MCLK pin, while digital audio data is input into the decoding chip via the DSDIN pin. Under strict synchronization with the MCLK clock signal, the decoding chip parses and processes the input serial audio data, ultimately outputting a high-quality analog audio signal. This hardware-level audio processing architecture not only ensures the real-time performance and accuracy of audio signal processing but also provides reliable audio function expansion for the system, enabling the electrochromic glass smart dimming system to simultaneously meet the dual needs of visual dimming and audio processing, thus enhancing the overall application value of the system.

[0050] In some embodiments, the middle ambient light sensor is configured to detect ambient light illuminance; the left ambient light sensor is configured to detect light illuminance behind the left eye lens; and the right ambient light sensor is configured to detect light illuminance behind the right eye lens.

[0051] In this embodiment, the central ambient light sensor, left ambient light sensor, and right ambient light sensor are configured as light intensity detection units with clearly defined functional divisions. The central ambient light sensor is installed facing the external environment and is specifically used to detect the overall light illuminance level in the environment; its detection result reflects the basic lighting conditions of the environment. The left and right ambient light sensors are respectively aligned with the areas behind the left and right eye lenses to accurately detect the light intensity actually reaching the user's eyes. The three sensors form a complementary detection network in spatial arrangement, acquiring light illuminance data from different locations through their respective independent detection channels.

[0052] This embodiment constructs a multi-dimensional light environment perception system by configuring three ambient light sensors as detection units with clearly defined functional divisions. When the system is operating, the central ambient light sensor continuously monitors the ambient background light intensity, while the left and right ambient light sensors detect the actual light level reaching the eyes after passing through the lenses. This allows the system to simultaneously acquire dual information: ambient light and the actual light received by the user. By comparing and analyzing the differences between ambient light and transmitted light data, the system can more accurately determine the current light environment state, thus providing a more accurate and personalized basis for the dimming control of electrochromic glass. This sensor configuration effectively solves the problems of limited viewing angle and measurement deviation inherent in traditional single-point detection, significantly improving the accuracy and practicality of light intensity detection.

[0053] In some embodiments, the main control module triggers three ambient light sensors to sample data via GPIO pins.

[0054] In this embodiment, the main control module uses its GPIO pin to synchronously trigger the three ambient light sensors. This GPIO pin is configured to output a precise trigger signal and is connected to the enable or trigger pins of the middle, left, and right ambient light sensors. This synchronous triggering mechanism ensures that the three sensors start the data acquisition process at exactly the same time, eliminating time deviations caused by time-division sampling. The main control module achieves microsecond-level synchronization accuracy through direct hardware control, guaranteeing strict time consistency of the illumination data acquired by the three sensors.

[0055] This embodiment establishes a high-precision time-synchronized sampling system by synchronously triggering three ambient light sensors through the GPIO pins of the main control module. When light intensity detection is required, the main control module simultaneously sends trigger signals to the three sensors via the GPIO pins. The three sensors immediately start data acquisition and transmit the detection results to the ADC sampling channel of the main control module through their respective analog output channels. This hardware synchronous triggering method not only ensures the strict synchronization of data acquisition from the three sensors but also avoids the time errors that may be introduced by traditional time-division sampling. This provides a highly consistent sampling data foundation for subsequent light environment analysis, thereby significantly improving the system's detection accuracy and response capability to dynamic changes in the light environment.

[0056] It should be noted that the initial optical power of the sleeve without the light-transmitting plate is 2.309mW. The test data is shown in the table below: 1 2.149 93.10% 2 1.866 80.81% 3 1.427 61.80% 4 1.010 43.74% 5 0.943 40.84% 6 0.754 32.65% 7 0.614 26.59% 8 0.561 24.30% 9 0.523 22.65% Unlike existing technologies, the above solution achieves intelligent dimming control of electrochromic glass through the coordinated operation of an electrochromic glass driving module, an ambient light detection module, and a main control module. It employs a three-sensor architecture comprising a central ambient light sensor, a left ambient light sensor, and a right ambient light sensor. μs-level synchronous triggering sampling is achieved through the GPIO pins of the main control module, effectively solving the problems of limited viewing angle and insufficient dynamic range inherent in single-sensor detection. Simultaneously, the motor driver chip, in conjunction with the mechanical structure of the motor and potentiometer, allows for matching the voltage requirements of different EC films by adjusting the motor stroke, eliminating the need for complex DC-DC or H-bridge circuits and achieving wide voltage adaptation and continuous adjustment. This results in more accurate light environment assessment, providing precise input for dimming control; reduced system complexity and cost; and enhanced system versatility through wide voltage adaptation. Automatic control and continuous adjustment are achieved through pure hardware connection and structural design, avoiding complex algorithm control and improving system reliability and response speed.

[0057] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this utility model, this should not limit the scope of patent protection of this utility model. Any technical solutions resulting from equivalent structural or procedural substitutions or modifications made based on the essential concept of this utility model and utilizing the content described in the text and drawings of this utility model, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this utility model.

Claims

1. A smart dimming system for electrochromic glass, characterized in that, It includes an electrochromic glass driving module, an ambient light detection module, and a main control module; The electrochromic glass driving module includes a motor driving chip and a motor. The motor driving chip is connected to the main control module and is used to receive control signals. The motor is connected to the motor driving chip, and its output shaft is connected to a potentiometer through a mechanical structure to adjust the voltage applied to the electrochromic glass. The ambient light detection module includes a middle ambient light sensor, a left ambient light sensor, and a right ambient light sensor. The middle ambient light sensor, the left ambient light sensor, and the right ambient light sensor are respectively connected to the ADC sampling pin of the main control module. The main control module is configured to synchronously trigger the middle ambient light sensor, the left ambient light sensor, and the right ambient light sensor to perform data sampling through the GPIO pin. The main control module includes a microcontroller (MCU), which contains multiple GPIO pins and an ADC sampling channel. The GPIO pins are used to output PWM signals to the motor drive chip and synchronously trigger the ambient light sensor. The ADC sampling channel is used to acquire the analog voltage signal output by the ambient light sensor.

2. The electrochromic glass intelligent dimming system according to claim 1, characterized in that, The electrochromic glass driving module includes a first electrochromic film control circuit and a second electrochromic film control circuit that are independent of each other. The first electrochromic film control circuit and the second electrochromic film control circuit are respectively controlled by the GPIO pins of the main control module.

3. The electrochromic glass intelligent dimming system according to claim 1, characterized in that, Also includes: The power supply management module includes an LGS4056H lithium battery charging management chip, which integrates charging management functions and is connected to a charging indicator LED to display the charging status.

4. The electrochromic glass intelligent dimming system according to claim 3, characterized in that, The power management module also includes an SDB628 boost DC-DC converter and a CJ6205B33F LDO chip. The SDB628 boost DC-DC converter is packaged in an SOT-23-6 package, and the CJ6205B33F LDO chip is used to provide a 3.3V voltage output.

5. The electrochromic glass intelligent dimming system according to claim 3, characterized in that, The power management module also includes a power supply switching circuit, which comprises a MOSFET switching array composed of Q2KPMOSAD3401A and PMOSAO3402A for power supply switching.

6. The electrochromic glass intelligent dimming system according to claim 1, characterized in that, It also includes a DS1302Z real-time clock chip, which is packaged in an SOP-8 package and connected to the main control module via a serial interface to provide timing and calendar functions.

7. The electrochromic glass intelligent dimming system according to claim 1, characterized in that, The system also includes a decoding chip, which has pins for receiving the MCLK master clock signal and pins for receiving DSDIN digital serial data input. The MCLK master clock signal provides a synchronization reference for the internal circuitry of the decoding chip.

8. The electrochromic glass intelligent dimming system according to claim 1, characterized in that, The intermediate ambient light sensor is configured to detect ambient light illuminance; The left ambient light sensor is configured to detect the light illuminance behind the lens of the left eye. The right ambient light sensor is configured to detect the illuminance behind the right eye's translucent lens.

9. The electrochromic glass intelligent dimming system according to claim 1, characterized in that, The main control module triggers three ambient light sensors to sample data via GPIO pins.

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