LED driving power supply integrated with touch dimming and defogging functions

Abstract

This utility model discloses an LED driver power supply with integrated touch dimming and defogging functions. It comprises a control architecture based on a JST134Q-600 silicon controlled rectifier (SCR) and an XHD8M2301AS16 microcontroller, combining a touch control module, an LED driver module, and a defogging function module to achieve a highly integrated three-in-one design. This application enables LED module dimming and color adjustment, as well as defogging of the graphene anti-fog film, through touch operation, significantly improving convenience and intelligence. It also possesses advantages such as high circuit integration, stable touch control, strong overload capacity, and low harmonics, making it suitable for controlling LED lights and anti-fog mirrors in smart bathroom scenarios.

Description

Technical Field

[0001] This utility model relates to the field of smart home technology, and in particular to an LED driver power supply with integrated touch dimming and defogging functions. Background Technology

[0002] With the rapid development of smart homes, smart bathrooms, as an important component, are gradually changing people's lifestyles. In smart bathroom systems, the design and performance of the LED driver directly affect the device's functional integration, ease of use, and overall size optimization. Traditional LED drivers typically only have a single power supply function, making it difficult to meet the multi-functional integration needs of modern smart bathrooms. For example, the dimming and color-adjusting functions of the LED module in a bathroom mirror, touch control functions, and the defogging function of the graphene anti-fog film often require independent control modules. This not only increases the overall size of the device but also leads to complex wiring, increased costs, and maintenance difficulties.

[0003] In recent years, highly integrated, high-precision, and highly stable power supply designs have gradually become a research hotspot in the smart home field. By integrating multiple functions into a single circuit, new LED driver power supplies have made significant progress in reducing size. However, existing technologies still have some shortcomings. First, traditional driver power supplies rely heavily on discrete components or simple control chips for control, resulting in low integration and difficulty in achieving a high degree of unification of touch control, dimming, color adjustment, and defogging functions. Second, existing products have limited overload capacity and harmonic suppression capabilities, making them susceptible to grid fluctuations or load changes in practical applications, reducing system reliability and stability. Furthermore, the sensitivity and anti-interference capabilities of touch control often cannot be simultaneously optimized, further limiting the improvement of user experience.

[0004] Therefore, developing an LED driver power supply capable of highly integrating touch control, LED module dimming and color adjustment, and defogging functions has become a pressing technical challenge in the smart bathroom industry. This driver power supply not only needs to meet the requirements of miniaturization but also needs stable performance and good compatibility to adapt to the ever-evolving needs of smart homes. This invention is based on this background, aiming to provide an efficient and reliable solution through innovative circuit design and advanced control technology, thereby promoting the development of smart bathroom equipment towards greater intelligence and convenience. Utility Model Content

[0005] The purpose of this utility model is to provide an LED driver power supply with integrated touch dimming and defogging functions, which solves the problems mentioned in the background art.

[0006] This invention is implemented as follows: an LED driver power supply with integrated touch dimming and defogging functions, including core components and control architecture, functional module design, workflow, and technical features. The core components and control architecture include a JST134Q-600 silicon controlled rectifier (SCR) and an XHD8M2301AS16 microcontroller. The SCR is used to regulate the output power to achieve stable power supply to the LED module and the graphene anti-fog film; the microcontroller is responsible for processing user input signals and generating control commands to coordinate the operation of each functional module.

[0007] Furthermore, the functional module design includes a touch control module, an LED driver module, and a defogging module. The touch control module consists of a touch panel and a control board. The touch panel receives the user's touch operation signal and transmits it to the control board. The control board generates PWM control signals based on the received signals, which are applied to the LED driver module and the defogging module respectively. The LED driver module provides stable power support for the LED lights and supports dynamic adjustment of brightness and color. The defogging module achieves rapid defogging of the mirror surface by controlling the heating state of the graphene anti-fog film.

[0008] Specifically, the workflow is as follows: S1, the user triggers an operation signal via a touch panel; S2, the touch panel transmits the signal to the control panel; S3, the control panel parses the signal and generates corresponding control commands; S4, the LED driver adjusts the brightness and color of the LED module according to the commands, while simultaneously controlling the working state of the graphene anti-fog film. The signal transmission between the touch panel and the control panel is completed through low-noise differential signal lines to ensure signal stability.

[0009] Furthermore, the technical features are reflected in several aspects. First, the three-in-one function design allows users to switch between dimming, color adjustment, and defogging functions with simple touch operations, significantly improving convenience. Second, the high integration of the circuit design is achieved through the use of JST134Q-600 thyristor transistors and XHD8M2301AS16 microcontrollers, greatly reducing the product size. Third, the stability of touch control is enhanced through optimized signal filtering algorithms and hardware anti-interference design, avoiding false triggering. Fourth, the system has strong overload capacity, and multiple current protection mechanisms ensure stable operation even under abnormal conditions. Fifth, low harmonic characteristics are achieved through optimized power factor correction circuits and electromagnetic compatibility design, effectively reducing interference to the power grid.

[0010] Furthermore, the specific implementation of the touch control module includes the following details. The touch panel employs capacitive sensing technology, with a conductive thin film covering its surface to detect the user's finger contact position. When the user touches the panel, the capacitance value changes, and the touch panel acquires the change through a built-in ADC module and generates a digital signal. After receiving this signal, the control board processes it using a preset algorithm to generate a corresponding PWM control signal. The PWM signal frequency range is 50Hz to 500Hz, and the duty cycle can be adjusted between 1% and 99%, thereby achieving precise control of the LED module's brightness and color.

[0011] Furthermore, the design focus of the LED driver module is on power conversion efficiency and stability. The LED driver power supply adopts a constant current driving method, with an output current range of 300mA to 1000mA and a voltage range of 12V to 24V. By introducing a feedback loop, the operating status of the LED module is monitored in real time, and the output parameters are dynamically adjusted according to load changes to ensure that the brightness and color of the LED lights remain consistent. In addition, the LED driver module also integrates over-temperature protection and short-circuit protection functions. When the temperature exceeds 85℃ or a short circuit occurs, the output is automatically cut off to protect the equipment.

[0012] Furthermore, the defogging module achieves mirror defogging by controlling the heating power of the graphene antifogging film. The graphene antifogging film is installed on the back of the mirror and has a resistance of 5Ω to 10Ω. When the user triggers the defogging function, the control board sends a heating command, driving the power supply to output a constant current to the graphene antifogging film, raising its temperature to 40℃ to 60℃, thereby quickly removing moisture from the mirror surface. To prevent overheating, the defogging module is equipped with a temperature sensor; when the temperature exceeds a set threshold, it automatically reduces the heating power or stops heating.

[0013] Furthermore, the overall system architecture achieves high integration through modular design. The switching module is used to start and stop the entire system, and it integrates overvoltage protection circuitry with an input voltage range of AC 100V to 240V. The main control module includes a touch panel, a control panel, and an LED driver power supply, responsible for signal processing and function coordination. Functional modules include an LED dimming and color-changing module and a graphene anti-fog film defogging module, respectively implementing lighting and mirror defogging functions. All modules are connected via standardized interfaces for easy maintenance and upgrades.

[0014] Specifically, the electromagnetic compatibility (EMC) design of the system is achieved through the following methods: First, an EMI filter is added at the input to suppress high-frequency interference signals from entering the system. Second, an LC filter circuit is set at the output to reduce the output ripple voltage and improve the operational stability of the LED module and the graphene anti-fog film. Finally, the signal loop area is reduced by optimizing the PCB layout, thereby lowering the intensity of electromagnetic radiation.

[0015] Furthermore, the low-harmonic characteristics of the system are achieved through a power factor correction circuit. The power factor correction circuit employs a Boost topology, with an input current waveform close to a sine wave and total harmonic distortion less than 10%. In addition, by adjusting the switching frequency and duty cycle, the content of higher harmonics is further reduced, improving the system's grid adaptability.

[0016] Furthermore, the system's overload capacity is achieved through multiple protection mechanisms. The input terminal is equipped with an overvoltage protection circuit, which automatically cuts off the power input when the input voltage exceeds 260V. The output terminal is equipped with an overcurrent protection circuit, which activates a current-limiting mode to limit the output power when the output current exceeds 120% of the rated value. In addition, the system is also equipped with an overtemperature protection function, which automatically reduces the output power or shuts down the system when the internal temperature exceeds 90℃ to prevent equipment damage.

[0017] Furthermore, the debugging and calibration process of the system includes the following steps: S1, calibrating the sensitivity of the touch panel using dedicated testing equipment to ensure it can accurately detect user operations. S2, calibrating the frequency and duty cycle of the PWM signal of the control board to ensure its output meets design requirements. S3, testing the output current and voltage of the LED driver module to ensure it meets the operating requirements of the LED module. S4, testing the heating power and temperature response time of the defogging module to verify its defogging effect and safety.

[0018] Furthermore, the system's practical applications include smart bathroom appliances in smart homes, especially bathroom mirrors with LED modules and graphene anti-fog films. Users can adjust the brightness and color of the LED lights via touch operation, and can also activate the defogging function as needed, enhancing the user experience. In addition, due to its compact size, the system is easy to install in confined spaces and is suitable for bathroom mirrors of various sizes.

[0019] Beneficial Effects: This utility model discloses an LED driver power supply with integrated touch dimming and defogging functions. Through a highly integrated design, it combines touch control, LED dimming and color adjustment, and defogging functions into one unit, significantly improving the product's convenience, stability, and intelligence. The technical solution describes in detail the implementation methods of each module and their interactions, ensuring that those skilled in the art can implement this utility model based on the description. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall system architecture of an LED driver power supply with integrated touch dimming and defogging functions.

[0021] The attached diagram is labeled as follows: 1. Switch; 2. Touch panel; 3. Control board (microcontroller); 4. LED driver power supply; 5. Graphene anti-fog film; 6. LED light. Detailed Implementation

[0022] This utility model provides an LED driver power supply with integrated touch dimming and defogging functions. Its core lies in achieving a highly integrated design that combines touch control, LED module dimming and color adjustment, and graphene anti-fogging film defogging. Combined with... Figure 1 This is a schematic diagram of the overall system architecture. This specific implementation method will describe in detail the functional implementation, operating principle and actual application scenarios of each module.

[0023] Switch 1 serves as the input terminal of the entire system, responsible for connecting to an external AC power supply and starting the system. Switch 1 integrates an overvoltage protection circuit; when the input voltage exceeds 260V, it automatically cuts off the power input to protect subsequent circuits. The output terminal of switch 1 is connected to touch panel 2, which uses capacitive sensing technology. A conductive film covers its surface to detect the user's finger contact position. When the user touches touch panel 2, its capacitance changes. The built-in ADC module collects this change and generates a digital signal. This signal is transmitted to control board 3 through a low-noise differential signal line, ensuring signal transmission stability. The core component of control board 3 is the XHD8M2301AS16 microcontroller. After receiving the signal from touch panel 2, the microcontroller processes it using a preset algorithm to generate a PWM control signal. The PWM signal frequency range is set from 50Hz to 500Hz, and the duty cycle can be adjusted between 1% and 99%, thereby achieving precise control of the LED driver power supply 4 and the graphene anti-fog film 5.

[0024] LED driver power supply 4 is responsible for providing stable power support to LED lamp 6, and its design focuses on power conversion efficiency and operational stability. LED driver power supply 4 adopts a constant current drive method, with an output current range of 300mA to 1000mA and a voltage range of 12V to 24V. To ensure consistent brightness and color of LED lamp 6, LED driver power supply 4 incorporates a feedback loop to monitor the operating status of LED lamp 6 in real time and dynamically adjust output parameters according to load changes. Furthermore, LED driver power supply 4 integrates over-temperature protection and short-circuit protection functions; when the temperature exceeds 85℃ or a short circuit occurs, it automatically cuts off the output to protect the device. In practical applications, after the user triggers dimming and color adjustment operations via touch panel 2, control panel 3 generates a corresponding PWM signal and sends it to LED driver power supply 4. LED driver power supply 4 adjusts the output current and voltage according to the signal, thereby changing the brightness and color of LED lamp 6.

[0025] A graphene anti-fog film 5, with a resistance of 5Ω to 10Ω, is installed on the back of the mirror to achieve rapid defogging. When the user triggers the defogging function by touching the small panel 2, the control panel 3 sends a heating command to the LED driver power supply 4. The LED driver power supply 4 outputs a constant current to the graphene anti-fog film 5, raising its temperature to 40℃ to 60℃, thereby quickly removing moisture from the mirror surface. To prevent overheating, the graphene anti-fog film 5 is equipped with a temperature sensor. When the temperature exceeds a set threshold, it automatically reduces the heating power or stops heating. In practical scenarios, such as when moisture appears on the mirror after a shower, simply touching the small panel 2 activates the defogging function, and the graphene anti-fog film 5 rapidly heats up and defogs the mirror in a short time.

[0026] The system's electromagnetic compatibility (EMC) design is achieved through several measures. First, an EMI filter is added to the input of switch 1 to suppress high-frequency interference signals from entering the system. Second, an LC filter circuit is installed at the output of the LED driver power supply 4 to reduce output ripple voltage and improve the operational stability of the LED 6 and the graphene anti-fog film 5. Finally, the PCB layout is optimized to reduce the signal loop area and lower electromagnetic radiation intensity. These designs ensure that the system can operate stably even in complex electromagnetic environments.

[0027] The system's low harmonic characteristics are achieved through a power factor correction circuit employing a Boost topology. This circuit produces an input current waveform close to a sine wave, with total harmonic distortion (THD) less than 10%. Furthermore, by adjusting the switching frequency and duty cycle, higher-order harmonic content is further reduced, improving the system's grid adaptability. In actual testing, the system's input current waveform is smooth with low harmonic content, effectively reducing interference to the power grid.

[0028] The system's overload capacity is achieved through multiple protection mechanisms. An overvoltage protection circuit at the input terminal automatically cuts off the power input when the input voltage exceeds 260V. An overcurrent protection circuit at the output terminal activates a current-limiting mode to restrict output power when the output current exceeds 120% of the rated value. Furthermore, the system is equipped with over-temperature protection; when the internal temperature exceeds 90℃, it automatically reduces output power or shuts down the system to prevent equipment damage. These protection mechanisms ensure that the system maintains stable operation even under abnormal conditions.

[0029] The system's debugging and calibration process includes several steps. S1, the sensitivity of the touch panel 2 is calibrated using specialized testing equipment to ensure accurate detection of user operations. S2, the frequency and duty cycle of the PWM signal on the control panel 3 are calibrated to ensure its output meets design requirements. S3, the output current and voltage of the LED driver power supply 4 are tested to ensure it meets the operating requirements of the LED lamp 6. S4, the heating power and temperature response time of the graphene anti-fog film 5 are tested to verify its defogging effect and safety. These steps ensure the system's reliability and performance in actual use.

[0030] In practical applications, this invention is suitable for smart bathroom devices in smart homes, especially bathroom mirrors with LED modules and graphene anti-fog films. Users can adjust the brightness and color of the LED lights 6 by touching the small panel 2, and can also activate the defogging function as needed to enhance the user experience. Due to its compact size, the system is easy to install in confined spaces and is suitable for bathroom mirrors of various sizes. For example, in a home bathroom, users can adjust the brightness and color of the LED lights 6 by touching the small panel 2 to create a comfortable lighting environment; in winter or humid environments, users can quickly activate the defogging function to ensure clear visibility of the mirror.

[0031] In summary, this invention integrates touch control, LED dimming and color adjustment, and defogging functions into a single, highly integrated design, significantly improving the product's convenience, stability, and intelligence. The collaborative operation between the modules is achieved through standardized interfaces, facilitating maintenance and upgrades. This specific embodiment details the implementation methods of each module and their interactions, ensuring that those skilled in the art can implement this invention based on the description.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An LED driver power supply with integrated touch dimming and defogging functions, characterized in that, It includes a switch (1), a touch panel (2), a control panel (3), an LED driver (4), a graphene anti-fog film (5), and an LED light (6). The touch panel (2) is connected to the control panel (3), and the control panel (3) is connected to the LED driver (4) and the graphene anti-fog film (5) respectively through signal lines. The LED driver (4) is further connected to the LED light (6).

2. The LED driver power supply with integrated touch dimming and defogging functions as described in claim 1, characterized in that, The touch panel (2) uses capacitive sensing technology. A conductive film is covered on the surface to detect the user's finger contact position, and the capacitance change is converted into a digital signal through the built-in ADC module.

3. The LED driver power supply with integrated touch dimming and defogging function as described in claim 2, characterized in that, The control board (3) generates a PWM signal with a frequency range of 50Hz to 500Hz and an adjustable duty cycle between 1% and 99%.

4. An LED driver power supply with integrated touch dimming and defogging functions as described in claim 1, characterized in that, The LED driver power supply (4) adopts a constant current driving method, with an output current range of 300mA to 1000mA and a voltage range of 12V to 24V.

5. An LED driver power supply with integrated touch dimming and defogging functions as described in claim 4, characterized in that, The LED driver power supply (4) introduces a feedback loop to monitor the working status of the LED lamp (6) in real time and dynamically adjust the output parameters according to the load changes.

6. An LED driver power supply with integrated touch dimming and defogging functions as described in claim 1, characterized in that, The graphene anti-fog film (5) is installed on the back of the mirror, with a resistance value ranging from 5Ω to 10Ω and a heating temperature range of 40℃ to 60℃.

7. An LED driver power supply with integrated touch dimming and defogging functions as described in claim 6, characterized in that, The graphene anti-fog film (5) is equipped with a temperature sensor, which automatically reduces the heating power or stops heating when the temperature exceeds the set threshold.

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