Dustproof and waterproof touch screen control device

Abstract

This application relates to the field of touchscreen control technology, and in particular to a dustproof and waterproof touchscreen control device, which includes a protective structure module, a detection and feedback module, a dynamic adjustment module, a self-cleaning module, and a data storage and analysis module. It achieves dual barrier protection against solid particles and liquids through a microporous filter layer and a hydrophobic coating, monitors the surface state using optical and pressure sensors, and removes adhering substances using ultrasonic vibration and micro-airflow channels. Simultaneously, it optimizes the protection strategy through data analysis. This application can effectively improve the protective performance, dynamic adaptability, and long-term stability of touchscreens in complex environments, meeting the demands of modern electronic devices for efficient and durable touchscreens.

Description

Technical Field

[0001] This utility model belongs to the field of electronic equipment technology, specifically a dustproof and waterproof touch screen control device. Background Technology

[0002] With the widespread application of touchscreen technology, dust and water resistance has become a key factor in improving the lifespan and stability of touchscreens. However, existing touchscreen control devices still have insufficient dust and water resistance in complex environments, especially in high humidity, dusty, or liquid splash scenarios, which can easily lead to misoperation or equipment damage, affecting user experience and equipment reliability.

[0003] A search revealed a touchscreen control method and device with publication number CN104063101B, published on August 24, 2016. This patent obtains the actual capacitance values ​​of various test points on the touchscreen and determines the interference level of the conductive liquid based on the changes in the actual capacitance values ​​relative to a reference capacitance value, thereby controlling the touchscreen to operate in an mode corresponding to the interference level. This technical solution can mitigate the impact of conductive liquids on the touchscreen to some extent, improving sensitivity and detection accuracy. However, this solution mainly optimizes for the interference of conductive liquids and fails to comprehensively consider the combined requirements of dustproofing and waterproofing, such as the impact of solid particles on the touchscreen surface and the seepage problem caused by prolonged liquid coverage. Furthermore, this solution relies on the capacitance value change judgment mechanism, which may fail due to signal distortion in extreme environments, thus limiting its protective capabilities.

[0004] A search revealed a touchscreen control device, touchscreen control method, and display device, published on June 28, 2024, with publication number CN113721795B. This patent controls the touchscreen's power supply voltage through the first I / O interface of the display control board, aiming to reduce false touch rate and energy consumption. This technical solution can effectively reduce false touches and extend device battery life. However, this solution mainly focuses on energy management and reducing false touch rate, without addressing the dust and water resistance design of the touchscreen in harsh environments. For example, when the touchscreen is exposed to high humidity or dusty environments, the lack of effective physical protection or dynamic adjustment mechanisms may lead to damage to internal circuitry or malfunction. Furthermore, this solution does not explicitly address how to deal with the impact of liquid splashes or dust accumulation on the long-term use of the touchscreen, indicating limited protection capabilities.

[0005] The aforementioned problems indicate that existing touchscreen control devices still have significant shortcomings in dust and water resistance, especially in terms of comprehensive protection capabilities, dynamic adaptability, and long-term stability in complex environments. Therefore, this invention provides a dustproof and waterproof touchscreen control device, aiming to enhance the touchscreen's protective performance in harsh environments through optimized structural design and control strategies. This ensures the touchscreen's reliability and user experience in high humidity, dusty, or liquid-splashed scenarios, meeting the demands of modern electronic devices for efficient and durable touchscreens. Utility Model Content

[0006] This utility model relates to the field of touchscreen control technology, specifically a dustproof and waterproof touchscreen control device. In recent years, with the widespread application of touchscreen technology, its protective performance in complex environments has gradually become a key factor affecting device reliability and user experience. However, existing dustproof and waterproof designs for touchscreens still have significant shortcomings, especially in high humidity, dusty, or liquid splash scenarios, which can easily lead to misoperation or damage to internal circuits. For example, while patent CN104063101B uses capacitance changes to determine the level of conductive liquid interference, it fails to fully consider the impact of solid particles on the surface and the potential for liquid penetration due to prolonged liquid coverage. Furthermore, this solution relies on a capacitance change-based judgment mechanism, which may cause signal distortion in extreme environments, limiting its protective capabilities. Patent CN113721795B primarily focuses on energy management and error rate optimization, without addressing the physical protection and dynamic adaptability requirements of touchscreens in harsh environments. These issues indicate that existing technologies urgently need improvement in terms of comprehensive protection capabilities, dynamic adaptability, and long-term stability.

[0007] To address the above problems, this utility model provides a dustproof and waterproof touchscreen control device, comprising the following modules:

[0008] The protective structure module is used to construct a multi-layered protection system, combining a microporous filter layer and a hydrophobic coating to achieve dual barrier against solid particles and liquids. The microporous filter layer consists of a honeycomb micropore array with a diameter of less than 0.1 mm, which is installed on the outer surface of the touch screen and fixedly connected to the frame through an embedded slot. The hydrophobic coating is made by spraying fluorinated siloxane material onto the outside of the microporous filter layer and forming a uniform coating through an ultraviolet curing process.

[0009] The detection and feedback module is used to monitor the surface status of the touch screen in real time. It collects surface reflectivity data through an integrated optical sensor array and detects the distribution of external contact force in combination with a pressure sensor. The optical sensor array is arranged in a grid on the inner side of the touch screen frame, and each sensor unit is connected to the main control chip through a flexible circuit board. The pressure sensor is installed at the four corners of the touch screen and fixed to the support frame with bolts.

[0010] The dynamic adjustment module is used to generate protection strategies based on detection data, reducing the risk of accidental touches by adjusting the screen power supply voltage and refresh rate. The power supply voltage adjustment range is 3.3 volts to 5 volts, which is achieved by controlling the power management chip through PWM signal. The refresh rate adjustment range is 60 Hz to 120 Hz, which is accomplished by sending instructions to the display driver chip through the I2C communication protocol.

[0011] The self-cleaning module is used to remove surface deposits and achieves automated cleaning through an ultrasonic vibration device and a micro airflow channel. The ultrasonic vibration device is installed at the center of the back of the touch screen and is fixed to the support frame by adhesive. The vibration frequency is 28 kHz to 40 kHz. The micro airflow channel is arranged around the touch screen and generates directional airflow through a micro fan. The airflow outlet angle is 30 degrees to 45 degrees.

[0012] The data storage and analysis module is used to record operating status data and perform trend analysis. It saves historical data through a built-in storage chip and combines it with a cloud server for deep learning model training. The storage chip has a capacity of 16GB and is connected to the main control chip through an SPI interface. The cloud server adopts a distributed architecture and supports concurrent access from multiple devices.

[0013] This invention introduces a multi-layered protection system, combining a microporous filter layer and a hydrophobic coating, effectively preventing the intrusion of solid particles and liquids, reducing misoperation and equipment damage caused by external environmental factors. Secondly, the coordinated operation of an optical sensor array and a pressure sensor enables precise monitoring of the touchscreen surface condition, providing a reliable basis for dynamic adjustment strategies. Furthermore, the combination of an ultrasonic vibration device and a micro-airflow channel effectively removes surface deposits, ensuring the stability and reliability of the touchscreen during long-term use. Finally, deep learning model training through the data storage and analysis module further enhances the intelligence level of the protection strategy, meeting the demands of modern electronic devices for efficient and durable touchscreens. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the dustproof and waterproof touch screen control device of this utility model, showing the installation position relationship between the protective structure module and the touch screen, as well as the distribution of the microporous filter layer and the hydrophobic coating.

[0015] Figure 2 The diagram shows the layout of the detection and feedback module, including the grid arrangement of the optical sensor array inside the touchscreen bezel and the mounting positions of the pressure sensors at the four corners of the touchscreen.

[0016] Figure 3The block diagram illustrating the working principle of the dynamic adjustment module shows the signal flow of power supply voltage regulation and refresh frequency regulation, as well as their connection relationship with the main control chip.

[0017] Figure 4 This is a structural diagram of the self-cleaning module, showing the installation position of the ultrasonic vibration device on the back of the touchscreen and the arrangement of the micro airflow channels.

[0018] The attached figures are labeled as follows:

[0019] 1. Touch screen; 2. Microporous filter layer; 3. Hydrophobic coating; 4. Optical sensor array; 5. Pressure sensor; 6. Ultrasonic vibration device; 7. Miniature airflow channel; 8. Main control chip. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Specific implementation examples are given below.

[0022] This utility model provides a dustproof and waterproof touch screen control device, the structure of which is explained in detail below. Figures 1 to 4 The accompanying drawings provide a detailed description. Referring to the reference numerals, the main components involved in this embodiment include a touchscreen 1, a microporous filter layer 2, a hydrophobic coating 3, an optical sensor array 4, a pressure sensor 5, an ultrasonic vibration device 6, a micro airflow channel 7, and a main control chip 8. The functions and connections of each module will be described below.

[0023] Touchscreen 1, as a core component, is installed in the display area of ​​the device. Its outer surface is covered with a microporous filter layer 2, which consists of a honeycomb array of micropores with a diameter of less than 0.1 mm. These micropores are distributed in a regular pattern within the visible area of ​​touchscreen 1. The microporous filter layer 2 is fixed to the frame of touchscreen 1 by an embedded slot. The slot is designed with a groove structure to ensure a tight fit between the microporous filter layer 2 and touchscreen 1, while preventing loosening or detachment due to external impact. A hydrophobic coating 3 is sprayed onto the outer side of the microporous filter layer 2. The hydrophobic coating 3 is made of fluorinated siloxane material and formed into a uniform coating through an ultraviolet curing process. The coating thickness is controlled between 50 micrometers and 100 micrometers to ensure its hydrophobic properties and transparency. The surface tension characteristics of the hydrophobic coating 3 cause liquids to form spherical droplets on its surface and slide off, thereby effectively preventing liquids from penetrating into the interior of touchscreen 1.

[0024] The core components of the detection and feedback module are the optical sensor array 4 and the pressure sensor 5. The optical sensor array 4 is arranged in a grid pattern inside the bezel of the touchscreen 1, with each sensor unit connected to the main control chip 8 via a flexible circuit board. The flexible circuit board design allows the sensor units to bend freely within a certain range to adapt to the installation environment of the touchscreen 1. The optical sensor array 4 works by emitting a light source of a specific wavelength to illuminate the surface of the touchscreen 1 and receiving the reflected light signals. Changes in reflectivity determine the presence of solid particles or liquid residue on the surface. The pressure sensor 5 is installed at the four corners of the touchscreen 1 and fixed to the support frame with bolts. Its function is to detect the distribution of external contact forces. The output signal of the pressure sensor 5 is transmitted to the main control chip 8 via wires. The main control chip 8 comprehensively analyzes the data from the optical sensor array 4 and the pressure sensor 5 to generate real-time monitoring results of the touchscreen 1's surface condition.

[0025] The dynamic adjustment module reduces the risk of accidental touches by adjusting the power supply voltage and refresh rate of the touchscreen 1. The power supply voltage can be adjusted from 3.3V to 5V, and the adjustment process is implemented by the main control chip 8 controlling the power management chip via a PWM signal. After receiving the PWM signal, the power management chip adjusts the output voltage value according to the change in the signal duty cycle, thereby changing the power supply state of the touchscreen 1. The refresh rate can be adjusted from 60Hz to 120Hz, and the main control chip 8 sends instructions to the display driver chip via the I2C communication protocol to complete the frequency adjustment. Specifically, when the detection and feedback module detects high humidity or liquid residue on the surface of the touchscreen 1, the main control chip 8 will reduce the power supply voltage to 3.3V and increase the refresh rate to 120Hz to reduce the sensitivity of the capacitive touchscreen, thereby reducing the probability of accidental touches. Conversely, in a dry environment, the main control chip 8 will restore the power supply voltage to 5V and adjust the refresh rate to 60Hz to ensure the response speed and accuracy of touch operations.

[0026] The self-cleaning module consists of an ultrasonic vibration device 6 and a micro airflow channel 7. The ultrasonic vibration device 6 is installed at the center of the back of the touchscreen 1 and is fixed to the support frame by adhesive. The ultrasonic vibration device 6 has a vibration frequency range of 28 kHz to 40 kHz. Its working principle is to generate small-amplitude mechanical waves on the surface of the touchscreen 1 through high-frequency vibration, thereby loosening and removing solid particles or liquid residues adhering to the surface. The micro airflow channel 7 is arranged around the perimeter of the touchscreen 1. The inlet end of the channel is connected to a micro fan, and the outlet end is designed with an angle of 30 to 45 degrees to generate directional airflow. The micro fan is fixed inside the device housing by a bracket, and its operation is controlled by the main control chip 8. When the optical sensor array 4 detects stains on the surface of the touchscreen 1, the main control chip 8 activates the ultrasonic vibration device 6 and the micro fan, using the synergistic effect of vibration and airflow to remove surface deposits.

[0027] The core components of the data storage and analysis module are the built-in storage chip and the cloud server. The storage chip has a capacity of 16GB and connects to the main control chip 8 via an SPI interface to store historical operating status data of the touchscreen 1. The cloud server adopts a distributed architecture, supporting concurrent access from multiple devices. Its main function is to train a deep learning model using the historical data uploaded from the storage chip. The main control chip 8 uploads the data from the storage chip to the cloud server via a wireless communication module. The cloud server uses a convolutional neural network algorithm to analyze the data and extract the protection strategy features of the touchscreen 1 under different environmental conditions. The trained model is then downloaded to the main control chip 8 to optimize the protection strategy generation logic of the dynamic adjustment module.

[0028] In practical applications, this device can be widely used in complex environments such as industrial control equipment, outdoor advertising machines, and vehicle navigation systems for touchscreen devices. For example, in an industrial workshop environment, touchscreen 1 may be exposed to dust and oil for extended periods. In this case, the microporous filter layer 2 and hydrophobic coating 3 can effectively block the intrusion of solid particles and liquids, while the optical sensor array 4 and pressure sensor 5 monitor the surface condition in real time and feed it back to the main control chip 8. The main control chip 8 adjusts the power supply voltage and refresh rate based on the monitoring results to ensure the stable operation of touchscreen 1 in high-dust environments. Simultaneously, the self-cleaning module is activated periodically, using ultrasonic vibration and airflow to remove surface deposits, thereby extending the lifespan of touchscreen 1. Furthermore, the data storage and analysis module continuously optimizes the protection strategy through deep learning analysis of historical data, improving the overall intelligence level of the device.

[0029] To enable those skilled in the art to fully understand and implement this utility model, the following explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0030] In industrial workshop environments, touchscreen 1 may be exposed to high levels of dust and oil for extended periods. Firstly, the microporous filter layer 2, with its honeycomb micropore array structure (less than 0.1 mm in diameter), provides initial protection against external solid particles. These micropores are regularly arranged within the visible area of ​​touchscreen 1, effectively intercepting airborne dust and fine particles and preventing them from directly contacting the touchscreen 1 surface. Simultaneously, the hydrophobic coating 3 utilizes the surface tension properties of fluorinated siloxane materials to cause liquids to form spherical droplets on its surface and slide off, thus preventing liquid penetration into the interior of touchscreen 1. Through this dual-protection design, touchscreen 1 can effectively resist the intrusion of the external environment in the initial stage.

[0031] When solid particles or liquid residue are present on the surface of touchscreen 1, optical sensor array 4 emits a light source of a specific wavelength to illuminate the surface of touchscreen 1 and receives the reflected light signal. Since solid particles and liquids have different reflectivities, optical sensor array 4 can determine the surface condition based on changes in reflectivity. Simultaneously, pressure sensors 5 are installed at the four corners of touchscreen 1 to detect the distribution of external contact forces. The main control chip 8 receives data from the optical sensor array 4 via a flexible circuit board and, combined with the output signals from the pressure sensors 5, generates real-time monitoring results of the touchscreen 1's surface condition. For example, when a significant decrease in surface reflectivity and abnormal pressure distribution are detected, the main control chip 8 determines that liquid residue or solid particle accumulation exists on the surface of touchscreen 1.

[0032] If high humidity or liquid residue is detected on the surface of touchscreen 1, the dynamic adjustment module activates its adjustment mechanism. The main control chip 8 controls the power management chip via a PWM signal to reduce the power supply voltage of touchscreen 1 from 5 volts to 3.3 volts. Simultaneously, it sends a command to the display driver chip via the I2C communication protocol to increase the refresh rate from 60 Hz to 120 Hz. This adjustment reduces the sensitivity of the capacitive touchscreen, thereby reducing accidental touches caused by liquid residue. Conversely, in a dry environment, the main control chip 8 restores the power supply voltage to 5 volts and adjusts the refresh rate to 60 Hz to ensure the responsiveness and accuracy of touch operations.

[0033] To further remove deposits from the surface of touchscreen 1, the self-cleaning module is activated. An ultrasonic vibration device 6, installed at the center of the back of touchscreen 1, generates minute-amplitude mechanical waves on the surface of touchscreen 1 through high-frequency vibration. These mechanical waves loosen and remove solid particles or liquid residues adhering to the surface. Simultaneously, micro-airflow channels 7 are arranged around the perimeter of touchscreen 1, with a micro-fan connected to its inlet end and fixed inside the device housing by a bracket. When the micro-fan operates, it generates directional airflow through an airflow outlet with an angle of 30 to 45 degrees, blowing the loosened particles and liquid residues away from the surface of touchscreen 1. Through the synergistic effect of ultrasonic vibration and directional airflow, the surface of touchscreen 1 is quickly cleaned, thereby extending its service life.

[0034] During long-term operation, the data storage and analysis module continuously records the historical operating status data of the touchscreen 1. The built-in storage chip connects to the main control chip 8 via an SPI interface, storing multi-dimensional data including surface condition monitoring results, power supply voltage, and refresh frequency adjustment records. The main control chip 8 uploads this data to a cloud server via a wireless communication module. The cloud server employs a distributed architecture to support concurrent access from multiple devices and uses a convolutional neural network algorithm to train a deep learning model on the data. The trained model extracts the protection strategy features of the touchscreen 1 under different environmental conditions and downloads the optimized strategy to the main control chip 8. The main control chip 8 dynamically adjusts the protection logic according to the optimized strategy; for example, it prioritizes reducing the power supply voltage and increasing the refresh frequency in high-dust environments, while restoring default settings in low-risk environments, thereby improving the overall intelligence level.

[0035] Through the above steps, this device achieves comprehensive protection for the touchscreen 1 in an industrial workshop environment. The microporous filter layer 2 and the hydrophobic coating 3 effectively block the intrusion of solid particles and liquids. The optical sensor array 4 and the pressure sensor 5 monitor the surface condition in real time and feed it back to the main control chip 8. The dynamic adjustment module optimizes the power supply voltage and refresh frequency based on the monitoring results. The self-cleaning module periodically removes surface deposits. The data storage and analysis module continuously optimizes the protection strategy through deep learning analysis of historical data. This multi-layered and dynamic protection design significantly improves the stability and reliability of the touchscreen 1 in complex environments, meeting the needs of modern electronic devices for efficient and durable touchscreens.

[0036] All content not described in detail in this specification is prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are prior art, and will not be described further here.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dustproof and waterproof touchscreen control device, characterized in that, include: The protective structure module is used to construct a multi-layered protective system, including a microporous filter layer and a hydrophobic coating. The microporous filter layer consists of a honeycomb microporous array with a diameter of less than 0.1 mm, which is installed on the outer surface of the touch screen and fixedly connected to the frame through an embedded slot. The hydrophobic coating is made by spraying fluorinated siloxane material onto the outside of the microporous filter layer and forming a uniform coating through an ultraviolet curing process. The detection and feedback module is used to monitor the surface status of the touch screen in real time. It includes an optical sensor array and a pressure sensor. The optical sensor array is arranged in a grid on the inside of the touch screen bezel. Each sensor unit is connected to the main control chip through a flexible circuit board. The pressure sensor is installed at the four corners of the touch screen and fixed to the support frame with bolts. The dynamic adjustment module is used to generate protection strategies based on detection data, including power supply voltage adjustment and refresh frequency adjustment. The power supply voltage adjustment range is 3.3 volts to 5 volts, and the refresh frequency adjustment range is 60 Hz to 120 Hz. The self-cleaning module is used to remove surface deposits and includes an ultrasonic vibration device and a micro airflow channel. The ultrasonic vibration device is installed at the center of the back of the touch screen and has a vibration frequency range of 28 kHz to 40 kHz. The micro airflow channel is arranged around the touch screen and has an airflow outlet angle of 30 degrees to 45 degrees. The data storage and analysis module is used to record operating status data and perform trend analysis. It includes a built-in storage chip and a cloud server. The storage chip has a capacity of 16GB and is connected to the main control chip via an SPI interface. The cloud server adopts a distributed architecture to support concurrent access from multiple devices.

2. The dustproof and waterproof touchscreen control device as described in claim 1, characterized in that, The micropores in the microporous filter layer have a diameter of less than 0.1 mm and are arranged in a regular pattern within the visible area of ​​the touch screen.

3. The dustproof and waterproof touchscreen control device as described in claim 1, characterized in that, The hydrophobic coating has a thickness of 50 micrometers to 100 micrometers and is formed into a uniform coating by ultraviolet curing process.

4. The dustproof and waterproof touchscreen control device as described in claim 1, characterized in that, The optical sensor array illuminates the touchscreen surface with a specific wavelength light source, receives reflected light signals, and determines the surface condition based on changes in reflectivity.

5. The dustproof and waterproof touchscreen control device as described in claim 1, characterized in that, The pressure sensor is fixed to the four corners of the touch screen with bolts and transmits the output signal to the main control chip through wires.

6. The dustproof and waterproof touchscreen control device as described in claim 1, characterized in that, The power supply voltage is adjusted by controlling the power management chip with a PWM signal to adjust the refresh rate, and the adjustment is completed by sending instructions to the display driver chip via the I2C communication protocol.

7. The dustproof and waterproof touchscreen control device as described in claim 1, characterized in that, The ultrasonic vibration device is fixed to the center of the back of the touch screen by adhesive bonding, and the vibration frequency range is 28 kHz to 40 kHz.

8. The dustproof and waterproof touchscreen control device as described in claim 1, characterized in that, The inlet end of the micro airflow channel is connected to the outlet end of the micro fan at a tilt angle of 30 to 45 degrees to generate directional airflow.

9. The dustproof and waterproof touchscreen control device as described in claim 1, characterized in that, The data storage and analysis module uploads the data in the storage chip to the cloud server through the wireless communication module. The cloud server uses a convolutional neural network algorithm to analyze the data and extract protection strategy features.

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