Front windshield defrosting and defogging system, method, and vehicle

Abstract

This application provides a windshield defrosting and defogging system, method, and vehicle. The method includes: when an obstruction is detected on the windshield, determining a removal type based on pre-acquired environmental information inside and outside the vehicle; obtaining a removal mode based on the environmental information and pre-acquired image information of the windshield; generating control parameters based on the removal type and removal mode; and sending the control parameters to the windshield defrosting and defogging system. This causes the air conditioning unit in the windshield defrosting and defogging system to adjust an electric valve based on the control parameters to generate airflow in a first air duct and / or a second air duct, thereby removing the obstruction. Through intelligent adjustment and efficient air duct design, rapid removal of obstructions from the windshield is achieved, improving driving safety and convenience, while also achieving energy conservation, environmental protection, and enhanced user experience.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, and in particular to a windshield defrosting and defogging system, method and vehicle. Background Technology

[0002] With the rapid development of automotive technology, the dashboard design has become an important window into showcasing a vehicle's technological sophistication and futuristic appeal. Large-screen displays, such as fully digital instrument clusters, floating central control screens, and even continuous multi-screen designs, have become standard features in many mid-to-high-end models. However, this design trend has also brought a series of challenges. Because large screens occupy a significant amount of space at the front of the dashboard, traditional defrost vents are often squeezed out or even completely eliminated, resulting in a substantial reduction in defrosting efficiency.

[0003] The traditional air vent design, located in the center of the front of the dashboard, can cause the airflow direction to change when it is squeezed by the screen. Instead of being accurately directed to the windshield, it blows more towards the passenger's face or side windows. This not only reduces defrosting efficiency but may also cause passenger discomfort.

[0004] In conclusion, how to improve the layout and efficiency of the front defrosting system while ensuring high-tech configuration and aesthetic design has become an urgent problem to be solved in this field. Summary of the Invention

[0005] This application provides a windshield defrosting and defogging system, method, and vehicle to improve defrosting and defogging efficiency, save resources and user time, and enhance user experience.

[0006] In a first aspect, embodiments of this application provide a windshield defrosting and defogging system, the system comprising: a first air duct, a second air duct, and an air conditioning unit;

[0007] The first air duct and the second air duct are respectively disposed on the front and rear sides of the display device on the vehicle dashboard, wherein the first air duct is integrated into the back panel of the display device;

[0008] The bottoms of the first air duct and the second air duct are connected to the outlet of the air conditioning unit, and multiple air vents are provided at the connection between the first air duct and the second air duct and the vehicle dashboard.

[0009] The first air duct and the second air duct are used to receive the airflow from the air conditioning unit;

[0010] The plurality of air vents are used to direct and transmit airflow from the first air duct and / or the second air duct to the windshield.

[0011] In one possible implementation, the system further includes an electric valve;

[0012] The electric valve is located at the connection between the first air duct and the second air duct, and at the connection between the air conditioning unit outlet;

[0013] The electric valve is used to regulate the airflow path formed by the first air duct opening, the second air duct opening, and the air conditioning unit.

[0014] In one possible implementation, heating wires are also disposed in the first air duct and the second air duct;

[0015] The heating wire is used to heat the airflow in the first air duct and the second air duct.

[0016] Secondly, embodiments of this application provide a method for defrosting and defogging a windshield, applied to a vehicle controller, wherein the controller is communicatively connected to a windshield defrosting and defogging system as described in any one of the first aspects configured in the vehicle; the method includes:

[0017] When an obstruction is detected on the windshield, the type of removal is determined based on the pre-acquired environmental information inside and outside the vehicle, including defrosting or defogging.

[0018] Control parameters are generated based on the clearing type;

[0019] The control parameters are sent to the windshield defrosting and defogging system so that the air conditioning unit in the windshield defrosting and defogging system adjusts the electric valves based on the control parameters to generate airflow in the first air duct and / or the second air duct to remove the obstruction.

[0020] In one possible implementation, the method further includes:

[0021] Based on the environmental information and the pre-acquired image information of the windshield, a clearing mode is obtained;

[0022] Accordingly, the generation of control parameters based on the clearing type includes:

[0023] The control parameters are generated based on the clearing type and the clearing mode.

[0024] In one possible implementation, the clearing mode includes a fast mode and an energy-saving mode; then, determining the clearing mode based on the environmental information and pre-acquired image information of the windshield includes:

[0025] Based on the environmental information and the image information, the temperature difference and humidity inside and outside the vehicle, as well as the coverage area of ​​the obstruction, are determined.

[0026] If the temperature difference between the inside and outside of the vehicle is greater than a preset temperature threshold, the humidity is greater than a preset humidity threshold, and the coverage area is greater than a preset area threshold, then the fast mode is determined as the clearing mode.

[0027] If the temperature difference between the inside and outside of the vehicle is less than a preset temperature threshold, the humidity is less than a preset humidity threshold, and the coverage area is less than a preset area threshold, then the energy-saving mode is determined to be the cleaning mode.

[0028] In one possible implementation, the clearing mode further includes a manual mode and a smart mode; then the method further includes:

[0029] If the driver of the vehicle activates the manual defrosting and defogging function, then the manual mode is determined as the clearing mode;

[0030] If the driver of the vehicle activates the intelligent defrosting and defogging function, then the intelligent mode is determined as the clearing mode.

[0031] In one possible implementation, the method further includes:

[0032] If the clearing mode is the intelligent mode, the control parameters are adjusted in real time based on the coverage area, the temperature difference, the humidity, and the driver preferences of the vehicle obtained in advance.

[0033] In one possible implementation, the method further includes:

[0034] Acquire the image information of the windshield;

[0035] The image information is detected and analyzed to determine whether the windshield is obstructed.

[0036] Thirdly, embodiments of this application provide a windshield defrosting and defogging device, comprising:

[0037] The module is used to determine the clearing type based on the pre-acquired environmental information inside and outside the vehicle when an obstruction is detected on the windshield. The clearing type includes defrosting or defogging.

[0038] The generation module is used to generate control parameters based on the clearing type;

[0039] The sending module is used to send the control parameters to the windshield defrosting and defogging system, so that the air conditioning unit in the windshield defrosting and defogging system adjusts the electric valve to generate an airflow path in the first air duct and / or the second air duct based on the control parameters, thereby removing the obstruction.

[0040] Fourthly, embodiments of this application provide a vehicle, including: a memory, a windshield, a controller, a windshield defrosting and defogging system as described in any one of the first aspects, and a memory;

[0041] The memory stores computer-executed instructions;

[0042] The controller executes the computer execution instructions stored in the memory, causing the controller to control the windshield defrosting and defogging system as described in the first aspect and / or various possible implementations of the first aspect to perform the second aspect and / or various possible implementations of the second aspect.

[0043] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a controller, are used to implement the second aspect and / or various possible implementations of the second aspect.

[0044] Sixthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a controller, implements the second aspect and / or various possible implementations of the second aspect as described above.

[0045] The windshield defrosting and defogging system, method, and vehicle provided in this application, when detecting an obstruction on the windshield, determine the removal type based on pre-acquired environmental information inside and outside the vehicle. Based on the environmental information and pre-acquired image information of the windshield, a removal mode is obtained. Control parameters are generated based on the removal type and mode, and sent to the windshield defrosting and defogging system. This causes the air conditioning unit in the windshield defrosting and defogging system to adjust an electric valve based on the control parameters to generate airflow in the first and / or second air ducts, removing the obstruction. Through intelligent adjustment and efficient airflow design, rapid removal of obstructions from the windshield is achieved, improving driving safety and convenience, while also achieving energy conservation, environmental protection, and enhanced user experience. Attached Figure Description

[0046] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0047] Figure 1 Schematic diagram of the windshield defrosting and defogging system provided in this application Figure 1 ;

[0048] Figure 2 Schematic diagram of the windshield defrosting and defogging system provided in this application Figure 2 ;

[0049] Figure 3Schematic diagram of the windshield defrosting and defogging system provided in this application Figure 3 ;

[0050] Figure 4 A simulation diagram of defrosting and defogging of the air duct structure;

[0051] Figure 5 Flowchart of the windshield defrosting and defogging method provided in this application Figure 1 ;

[0052] Figure 6 Flowchart of the windshield defrosting and defogging method provided in this application Figure 2 ;

[0053] Figure 7 Flowchart of the windshield defrosting and defogging method provided in this application Figure 3 ;

[0054] Figure 8 A schematic diagram of the windshield defrosting and defogging device provided in this application;

[0055] Figure 9 This is a structural diagram of the vehicle provided in this application.

[0056] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0057] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0058] With the rapid development of automotive technology, the dashboard design has become a crucial window into showcasing a vehicle's technological sophistication and futuristic appeal. Large-screen displays, such as fully digital instrument clusters, floating central control screens, and even continuous multi-screen designs, have become standard features in many mid-to-high-end models. However, this design trend has also brought a series of challenges. Because large screens occupy a significant amount of space at the front of the dashboard, traditional defrost vents are often squeezed or even completely eliminated, resulting in a significant reduction in defrost efficiency. The traditional centrally located vents at the front of the dashboard, when squeezed by the screen, cause airflow to change direction, failing to accurately direct airflow towards the windshield and instead blowing more air towards passengers' faces or side windows. This not only reduces defrost efficiency but may also cause passenger discomfort. Therefore, how to improve the layout and efficiency of the front defrost system while maintaining high-tech features and aesthetic design has become a pressing issue in this field.

[0059] To address the aforementioned technical problems, this application provides a windshield defrosting and defogging system, method, and vehicle, improving defrosting and defogging efficiency, enhancing driving safety and convenience, and achieving energy conservation and environmental protection. Specifically, the traditional air vent located in the center of the dashboard is often obstructed by the display device, hindering the effective guidance of airflow to the windshield, resulting in poor overall defrosting performance, prolonged defrosting time, a poor user experience, and energy waste. Considering these issues, the inventors investigated whether the traditional single air vent located in the center of the dashboard near the lower part of the windshield could be split into two defrosting air ducts and vents surrounding the display device, with the front duct blowing air to the lower-middle area of ​​the windshield and the rear duct blowing air to the upper-middle area. This avoids airflow obstruction by the screen, allowing for the installation of large equipment while ensuring defrosting effectiveness. Furthermore, by recognizing the internal and external environment of the vehicle and the state of the windshield, the air duct's airflow pattern is intelligently adjusted to efficiently complete defrosting and defogging. Based on this, the technical solution of this application is proposed.

[0060] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0061] Figure 1 Schematic diagram of the windshield defrosting and defogging system provided in this application Figure 1 , Figure 2 Schematic diagram of the windshield defrosting and defogging system provided in this application Figure 2 , Figure 3 Schematic diagram of the windshield defrosting and defogging system provided in this application Figure 3 , combined Figure 1 , Figure 2,and Figure 3 , Figure 1 This is a side sectional view. In the figure, 1-windshield, 2-display device on the vehicle dashboard, 3-second air duct, 4-first air duct. The first and second air ducts are respectively located on the front and rear sides of the display device on the vehicle dashboard. Figure 3 It can be seen that the first air duct is integrated into the back panel of the display device.

[0062] Combination Figure 1 , Figure 2 ,and Figure 3 It can be seen that the bottoms of the 4-first air duct and the 3-second air duct are connected to the air conditioning unit outlet, and multiple air vents are provided at the connection points of the 4-first air duct and the 3-second air duct with the vehicle dashboard. These multiple air vents are used to guide the airflow in the 4-first air duct and / or the 3-second air duct to the 1-windshield.

[0063] Among them, 4-first air duct and 3-second air duct are used to receive airflow from the air conditioning unit.

[0064] The system also includes electric valves and heating wires. The electric valves are located at the connection between the 4-first air duct and the 3-second air duct, as well as at the connection of the air conditioning unit outlet. The electric valves are used to regulate the airflow formed by the 4-first air duct, the 3-second air duct, and the air conditioning unit.

[0065] Heating wires are disposed in the 4-first air duct and the 3-second air duct to heat the airflow in the 4-first air duct and the 3-second air duct.

[0066] For example, a large 2-vehicle dashboard display device, which is the same width as the windshield, is arranged at the front of the dashboard. The air conditioning unit defrost system provides airflow to guide the hot air to the air vents (4-first air duct and 3-second air duct) located on the front and rear sides of the 2-vehicle dashboard display device, and blows it onto the 1-windshield. The front and rear sides can blow air at the same time, avoiding the obstruction of the 2-vehicle dashboard display device and achieving a faster defrosting effect.

[0067] To achieve better display effects while driving, the display devices on the vehicle's dashboard are usually positioned as far forward as possible, resulting in a very small gap between them and the windshield. Therefore, the front air duct (4-first air duct) is directly integrated into the back panel of the display device on the vehicle's dashboard. This allows the air to be directed directly to the front of the windshield within the limited space, achieving a highly efficient defrosting and defogging effect.

[0068] To verify whether the above duct design meets the defrosting and defogging functions, the defrosting and defogging function of the above duct structure can be simulated. Figure 4 This is a simulation diagram of the defrosting and defogging process for the air duct structure, such as... Figure 4 It can be seen that the airflow velocity distribution of the windshield is sufficient for defrosting and defogging.

[0069] Figure 5 Flowchart of the windshield defrosting and defogging method provided in this application Figure 1 ,like Figure 5 As shown, this method is applied to the vehicle's controller, which is similar to the aforementioned... Figure 1 , Figure 2 , Figure 3 The method includes: (The text abruptly ends here, so the translation stops as well.)

[0070] S501: When an obstruction is detected on the windshield, the removal type is determined based on pre-acquired environmental information inside and outside the vehicle.

[0071] In this step, in order to efficiently defrost or defog the windshield, the type of clearing can be determined when an obstruction is detected on the windshield. The clearing type includes defrosting or defogging.

[0072] Specifically, environmental information inside and outside the vehicle is obtained through sensors on the vehicle (such as temperature sensors, humidity sensors, vehicle speed sensors, etc.) and external weather forecast data.

[0073] For example, information about the vehicle's internal and external environment includes, but is not limited to:

[0074] Vehicle exterior information: current weather conditions (such as temperature, humidity, whether it is snowing or foggy, etc.), road conditions, etc.

[0075] Vehicle interior information: interior temperature, humidity, air conditioning system status, etc.

[0076] After obtaining environmental information inside and outside the vehicle, the type of removal can be determined by combining the characteristics of the obstruction.

[0077] For example, the type of obstruction can be analyzed based on collected environmental information and the characteristics of the obstruction (such as color, texture, transparency, etc.). For instance, if the outside temperature is very low and the vehicle has not been started for a long time, and the obstruction appears white or ice-crystal-like, it is likely frost. If the outside humidity is high, the temperature difference between the inside and outside of the vehicle is large, and the obstruction appears blurry or foggy, it is likely fog.

[0078] S502: Generate control parameters based on the clearing type.

[0079] In this step, after determining the clearing type, control parameters are generated based on the clearing type.

[0080] Specifically, control parameters include the operating mode of the air conditioning unit. For example, in defrost mode, the system might select heating mode to increase the glass temperature; while in defog mode, it might select cooling or dehumidifying mode to reduce the humidity inside the vehicle. The status of electric valves, for example, adjusts their opening state according to the operating mode. These valves may control the mixing ratio of hot and cold air, the air circulation mode (internal or external recirculation), and whether fresh air is introduced. The opening state of the electric valves determines the mixing ratio of hot and cold air and the air circulation mode. When calculating the opening state of the electric valves, the required glass temperature is calculated based on the type of obstruction on the windshield and the desired clearance effect, and the mixing ratio of hot and cold air is adjusted accordingly. In defrost mode, to heat the windshield more quickly, external recirculation can be selected to introduce fresh air; while in defog mode, internal recirculation can be selected to reduce the increase in humidity inside the vehicle.

[0081] The configuration of the air duct switching determines the specific path of airflow towards the windshield. When calculating the air duct switching, the most suitable air duct is selected based on the position and area of ​​obstructions on the windshield to ensure that the air can blow directly towards the obstruction.

[0082] Optionally, specific control parameters, such as fan speed and compressor operating status, also need to be calculated.

[0083] In colder environments, increasing fan speed may be necessary to heat the windshield more quickly and improve airflow. Similarly, increasing fan speed is needed to rapidly raise the temperature of the windshield if it is already very cold. Calculate the required airflow based on the type and area of ​​any obstructions on the windshield and adjust the fan speed accordingly.

[0084] If the humidity inside the vehicle is high, the compressor can operate at a higher power to dehumidify more quickly. In hotter external environments, the compressor may need more cooling capacity to maintain a comfortable interior temperature. Considering the vehicle's energy consumption limitations, the compressor's operating state may need to be optimized to strike a balance between dehumidification efficiency and energy consumption.

[0085] S503: Send control parameters to the windshield defrosting and defogging system so that the air conditioning unit in the windshield defrosting and defogging system adjusts the electric valves based on the control parameters to generate airflow in the first and / or second air ducts to remove obstructions.

[0086] In this step, after obtaining the control parameters, the vehicle's controller can send the control parameters to the windshield defrosting and defogging system. Then, the air conditioning unit adjusts the air duct based on the control parameters to generate an airflow path and transmits it to the windshield to remove obstructions.

[0087] Specifically, the controller packages the generated control parameters and sends them to the windshield defrosting and defogging system via the vehicle's internal communication network (such as the CAN bus). Upon receiving the control parameters, the windshield defrosting and defogging system parses them and extracts the specific instructions. Based on these instructions, the system adjusts the opening status of the electric valves. These valves control the mixing ratio of hot and cold air, the air circulation mode (internal or external recirculation), and the switching of air ducts.

[0088] 4-First Airflow Channel: Based on control parameters, the system adjusts the electric valves associated with the 4-first airflow channel to allow air to be blown into the lower area of ​​the windshield. This is particularly important in defrost mode, as the lower area is more prone to frost or ice buildup.

[0089] 3-Second Airflow: The system adjusts the electrically operated valves associated with the 3-second airflow to ensure that air is directed towards the upper area of ​​the windshield that is obscured by the dashboard or display. In defog mode, this helps to quickly remove fog from the upper area.

[0090] Airflow generation: By adjusting the electric valve, the system generates a suitable airflow path in the first and / or second airflow ducts to ensure that air can be blown directly and efficiently onto the obstructions on the windshield.

[0091] Air conditioning unit adjustment: At the same time, the air conditioning unit will adjust its working mode (such as heating, cooling, dehumidification, etc.) according to the control parameters to provide the required temperature and humidity of the air.

[0092] By precisely adjusting the electric valves, the system generates appropriate airflow paths in the 4-first air duct and 3-second air duct to ensure that air can efficiently cover the entire windshield, especially in areas that are difficult to be directly blown on.

[0093] Air conditioning unit adjustment: The air conditioning unit will adjust its working mode (such as heating, cooling, dehumidification, etc.) according to the control parameters and provide the required temperature and humidity of the air.

[0094] Optionally, the cleaning process can be accelerated by adjusting the temperature of the heating wire inside the air duct.

[0095] With precise adjustment of the electric valve and generation of the airflow path, the air flows along a predetermined path and blows directly onto the lower and upper areas of the windshield.

[0096] Temperature and humidity changes: Under the regulation of the air conditioning unit, the temperature and humidity of the air will change, thereby accelerating the removal of obstructions.

[0097] Defrosting: In heating mode, the air heats the lower and upper areas of the windshield, melting the frost.

[0098] Defogging: In cooling or dehumidifying mode, the air lowers the temperature and humidity of the windshield, thereby eliminating fog, especially in the upper area.

[0099] Optionally, the method further includes: obtaining a clearing mode based on environmental information and pre-acquired image information of the windshield.

[0100] In order to intelligently and flexibly remove obstructions and save resources, a clearing mode can be obtained based on environmental information and pre-acquired image information of the windshield. The clearing modes include manual mode, intelligent mode, fast mode and energy-saving mode.

[0101] Specifically, based on environmental and image information, the system determines the temperature difference between the vehicle's interior and exterior, humidity, and the area covered by obstructions. If the temperature difference between the vehicle's interior and exterior exceeds a preset temperature threshold, the humidity exceeds a preset humidity threshold, and the area covered exceeds a preset area threshold, then the fast mode is set to clearing mode. If the temperature difference between the vehicle's interior and exterior is less than a preset temperature threshold, the humidity is less than a preset humidity threshold, and the area covered is less than a preset area threshold, then the energy-saving mode is set to clearing mode. If the driver activates the manual defrosting and defogging function, then the manual mode is set to clearing mode. If the driver activates the intelligent defrosting and defogging function, then the intelligent mode is set to clearing mode.

[0102] Accordingly, step S502 above specifically includes: generating control parameters based on the clearing type and clearing mode.

[0103] After determining the cleanup type and cleanup mode, control parameters need to be generated based on the cleanup type and cleanup mode.

[0104] Specifically, in manual mode: users can manually select the defrost or defog function and adjust the relevant parameters according to their needs and preferences. At this time, the system will generate corresponding control parameters based on the user's input.

[0105] Intelligent Mode: The system automatically determines and selects the most suitable cleaning strategy based on environmental information (such as external temperature and humidity) and image information from the windshield. In intelligent mode, the system automatically generates and optimizes control parameters according to preset algorithms and logic.

[0106] Quick Mode: The system quickly starts up and operates in its most efficient clearing state to remove obstructions from the windshield as quickly as possible. In Quick Mode, the system generates a set of control parameters that rapidly improve defrosting and defogging efficiency.

[0107] Energy-saving mode: The system minimizes energy consumption while maintaining effective cleaning. In energy-saving mode, the system generates a set of control parameters that balance cleaning effectiveness and energy consumption.

[0108] After determining the clearing mode, the first step is to analyze the specific defrosting and defogging requirements under the current conditions. This includes analyzing the type, location, and area of ​​obstructions, as well as the impact of environmental information on the clearing effect.

[0109] Algorithm selection: Different algorithms and logic are selected to calculate control parameters depending on the clearing mode. For example, in intelligent mode, machine learning algorithms can be used to analyze environmental and image information and generate optimal control parameters.

[0110] Calculation parameters: Based on the selected algorithm and logic, the specific control parameters required to achieve the best cleaning effect are calculated. These parameters may include the temperature setting of the air conditioning unit, the selection of cooling / heating mode, the fan speed, and the opening status and degree of opening of the electric valves.

[0111] Parameter optimization: After calculating the initial control parameters, parameter optimization can be performed. For example, parameters can be adjusted to balance the cleaning effect and energy consumption, as well as to ensure the stability and reliability of the system.

[0112] The windshield defrosting and defogging method provided in this application, when detecting an obstruction on the windshield, determines the removal type based on pre-acquired environmental information inside and outside the vehicle, obtains a removal mode based on the environmental information and pre-acquired image information of the windshield, generates control parameters based on the removal type and removal mode, and sends the control parameters to the windshield defrosting and defogging system. This causes the air conditioning unit in the windshield defrosting and defogging system to adjust the electric valves in the first and / or second air ducts to generate airflow and remove the obstruction. Through intelligent adjustment and efficient air duct design, it achieves rapid removal of obstructions on the windshield, improving driving safety and convenience, while also achieving energy conservation, environmental protection, and enhanced user experience.

[0113] Figure 6 Flowchart of the windshield defrosting and defogging method provided in this application Figure 2 ,like Figure 6 As shown, based on the above embodiments, a clearing mode is obtained according to environmental information and pre-acquired image information of the windshield, specifically including:

[0114] S601: Based on environmental and image information, determine the temperature difference between the inside and outside of the vehicle, humidity, and the coverage area of ​​obstructions.

[0115] In this step, vehicle sensors are used to collect real-time parameters such as temperature and humidity from the external environment. This environmental information is crucial for determining the temperature and humidity differences between the inside and outside of the vehicle. Images of the windshield are captured by the vehicle's onboard camera; this is fundamental for analyzing the type, location, and area of ​​obstructions. The image information should be clear enough for accurate identification and analysis.

[0116] The vehicle's interior temperature is obtained through internal temperature sensors. This interior temperature is compared to the exterior temperature to determine the temperature difference between the inside and outside of the vehicle. This temperature difference is crucial for determining whether defrosting or defogging functions need to be activated, and for adjusting the operating mode of the air conditioning unit (such as heating or cooling).

[0117] The humidity of the external environment is obtained through an external humidity sensor. Although there may not be a dedicated humidity sensor inside the vehicle, the internal humidity can be indirectly assessed by analyzing the air conditions inside the vehicle (such as whether fogging occurs). By comparing the external humidity with the internal humidity (or the assessment results), the difference in humidity can be understood. Humidity differences are also important for the activation and adjustment of the defogging function.

[0118] Image processing techniques (such as edge detection and image segmentation) are used to analyze images of the windshield. Obstructions (such as frost, snow, fog, and water droplets) in the image are identified and their types determined. Based on the identification results, the area of ​​the obstruction covering the windshield is calculated. This area information is very useful for assessing the urgency of defrosting and defogging and adjusting relevant parameters (such as fan speed and the degree of opening of the electric valve).

[0119] S602: If the temperature difference between the inside and outside of the vehicle is greater than the preset temperature threshold, the humidity is greater than the preset humidity threshold, and the coverage area is greater than the preset area threshold, then the quick mode will be set to the clearing mode.

[0120] S603: If the temperature difference between the inside and outside of the vehicle is less than the preset temperature threshold, the humidity is less than the preset humidity threshold, and the coverage area is less than the preset area threshold, then the energy-saving mode will be set to the cleanup mode.

[0121] Temperature threshold, humidity threshold, and area threshold are preset, and the temperature difference, humidity, and coverage area inside and outside the vehicle calculated in the previous steps are compared with the preset thresholds to determine the clearing mode.

[0122] Specifically, the system will automatically select fast mode when the temperature difference between the inside and outside of the vehicle exceeds a preset temperature threshold, the humidity exceeds a preset humidity threshold, and the area covered by the obstruction exceeds a preset area threshold. This will ensure driving safety.

[0123] The system will automatically select energy-saving mode when the temperature difference between the inside and outside of the vehicle is less than a preset temperature threshold, the humidity is less than a preset humidity threshold, and the area covered by obstructions is less than a preset area threshold. This will maintain the cleaning effect while minimizing energy consumption and extending the vehicle's battery life.

[0124] Optionally, reasonable temperature thresholds, humidity thresholds, and area thresholds can be set according to vehicle model, usage environment, and user preferences.

[0125] S604: If the driver of the vehicle activates the manual defrost and defog function, the manual mode will be set to clearing mode.

[0126] To enhance the user experience, when the driver chooses to manually activate the defrost and defog function, the driver's wishes will be respected, and the manual mode will be set to clearing mode.

[0127] The driver can manually activate the defrost and defog function via the control panel or touchscreen inside the vehicle. Once the driver has manually activated the defrost and defog function, the clearing mode should be immediately switched to manual mode, and the operating status of the actuators (such as the air conditioning unit, electric valves, etc.) should be adjusted according to the driver's further operations or preset manual mode parameters.

[0128] S605: If the driver of the vehicle activates the intelligent defrost and defog function, the intelligent mode will be set to clearing mode.

[0129] Optionally, if the clearing mode is intelligent mode, the control parameters are adjusted in real time based on the coverage area, temperature difference, humidity, and the driver's preferences of the vehicle obtained in advance.

[0130] The driver can activate the intelligent defrosting and defogging function via the vehicle's control panel, touchscreen, or voice command. Once the system detects that the driver has activated the intelligent defrosting and defogging function, it should immediately switch the clearing mode to intelligent mode. In intelligent mode, the system will adjust the control parameters in real time based on real-time coverage area, temperature difference, humidity information, and pre-acquired driver preferences to achieve the best defrosting and defogging effect.

[0131] Based on real-time monitored status information and pre-acquired driver preferences, the system should adjust control parameters in real time, such as the temperature setting of the air conditioning unit, fan speed, and the opening degree of electric valves.

[0132] The adjustment process should ensure that it meets the driver's preferences while also achieving the best defrosting and defogging effect.

[0133] The windshield defrosting and defogging method provided in this application determines the temperature difference, humidity, and coverage area of ​​obstructions inside and outside the vehicle based on environmental and image information. If the temperature difference is greater than a preset temperature threshold, the humidity is greater than a preset humidity threshold, and the coverage area is greater than a preset area threshold, then the fast mode is determined as the clearing mode. If the temperature difference is less than a preset temperature threshold, the humidity is less than a preset humidity threshold, and the coverage area is less than a preset area threshold, then the energy-saving mode is determined as the clearing mode. If the driver activates the manual defrosting and defogging function, then the manual mode is determined as the clearing mode. If the driver activates the intelligent defrosting and defogging function, then the intelligent mode is determined as the clearing mode. If the clearing mode is intelligent, the control parameters are adjusted in real time based on the coverage area, temperature difference, humidity, and pre-acquired driver preferences. By accurately adapting to different conditions, improving user experience, enhancing driving safety, and achieving intelligent and automated operation, this method saves resources and achieves rapid, effective, and energy-efficient removal of obstructions from the windshield.

[0134] Figure 7 Flowchart of the windshield defrosting and defogging method provided in this application Figure 3 ,like Figure 7 As shown, based on the above embodiments, the method further includes:

[0135] S701: Acquire image information of the windshield.

[0136] S702: Detect and analyze image information to confirm whether there are any obstructions on the windshield.

[0137] In order to efficiently remove frost or fog from the windshield of a vehicle, a camera is installed inside the vehicle to collect image information of the windshield in real time, and then the image information is detected and analyzed to determine whether there are any obstructions on the windshield.

[0138] Specifically, the camera is activated and set to capture images of the windshield in real time at a certain frame rate. The captured images are then transmitted to the vehicle's internal controller. Image processing algorithms are used to detect and analyze the captured images. Steps such as edge detection, color analysis, and texture recognition are employed to identify whether frost, fog, or other obstructions are present on the windshield.

[0139] For example, the acquired windshield image is preprocessed. This includes operations such as image grayscale conversion, noise reduction, and contrast enhancement to improve the accuracy and efficiency of subsequent analysis.

[0140] Edge detection-based methods:

[0141] Edge detection is an important step in image processing, used to identify edge features in an image. For windshields, frost, fog, and other obstructions often cause edges to become blurred or disappear.

[0142] Edge detection algorithms such as Canny and Sobel can be used to process images. By comparing the changes in edge features before and after processing, it can be determined whether there are occlusions.

[0143] Color analysis-based methods:

[0144] Frost, fog, and other obstructions can alter the color of a windshield. For example, frost may make the glass appear white or gray, while fog may make it appear blurry and darker.

[0145] The presence of occlusions can be determined by analyzing the color distribution and variations in an image. Common color analysis methods include histogram statistics and color space conversion.

[0146] Machine learning-based methods:

[0147] With the development of machine learning technology, more and more researchers are starting to use deep learning algorithms for occlusion detection. For example, models such as convolutional neural networks (CNNs) can be used for image classification and recognition.

[0148] During the training phase, a large amount of image data containing different types of obstructions can be used to train the model. During the testing phase, the acquired windshield image is input into the model to obtain the result of determining whether an obstruction exists.

[0149] The above are merely examples of image processing, and the embodiments of this application do not specifically limit the specific implementation process of image processing.

[0150] The windshield defrosting and defogging method provided in this application acquires image information of the windshield, performs detection and analysis on the image information, and confirms whether there are obstructions on the windshield. This method improves detection accuracy, increases detection efficiency, and enhances adaptability.

[0151] Figure 8 This is a structural schematic diagram of the windshield defrosting and defogging device provided in this application, as shown below. Figure 8 As shown, the windshield defrosting and defogging device 800 includes:

[0152] The module 801 is used to determine the clearing type based on pre-acquired environmental information inside and outside the vehicle when an obstruction is detected on the windshield. The clearing type includes defrosting or defogging.

[0153] Generation module 802 is used to generate control parameters based on the clearing type.

[0154] The sending module 803 is used to send control parameters to the windshield defrosting and defogging system, so that the air conditioning unit in the windshield defrosting and defogging system adjusts the electric valves based on the control parameters to generate airflow in the first air duct and / or the second air duct to remove obstructions.

[0155] In one possible implementation, module 801 is also used for:

[0156] The clearing mode is determined based on environmental information and pre-acquired image information of the windshield;

[0157] Accordingly, the generation module 802 is specifically used for:

[0158] Control parameters are generated based on the clearing type and clearing mode.

[0159] In one possible implementation, the clearing mode includes a fast mode and an energy-saving mode. The determining module 801 then determines the clearing mode based on environmental information and pre-acquired image information of the windshield, specifically including:

[0160] Based on environmental and image information, determine the temperature difference and humidity inside and outside the vehicle, as well as the coverage area of ​​obstructions.

[0161] If the temperature difference between the inside and outside of the vehicle is greater than the preset temperature threshold, the humidity is greater than the preset humidity threshold, and the coverage area is greater than the preset area threshold, then the quick mode will be set to clearing mode.

[0162] If the temperature difference between the inside and outside of the vehicle is less than the preset temperature threshold, the humidity is less than the preset humidity threshold, and the coverage area is less than the preset area threshold, then the energy-saving mode will be set to the cleanup mode.

[0163] Optionally, the clearing mode also includes a manual mode and an intelligent mode. The determining module 801 determines the clearing mode based on environmental information and pre-acquired image information of the windshield, and specifically includes:

[0164] If the driver of the vehicle activates the manual defrost and defog function, the manual mode will be set to clearing mode.

[0165] If the driver of the vehicle activates the intelligent defrosting and defogging function, the intelligent mode will be set to clearing mode.

[0166] In one possible implementation, the generation module 802 is also used for:

[0167] If the clearing mode is intelligent mode, the control parameters are adjusted in real time based on the coverage area, temperature difference, humidity, and the driver's preferences of the vehicle obtained in advance.

[0168] In one possible implementation, the windshield defrosting and defogging device 800 further includes:

[0169] The acquisition module 804 is used to acquire image information of the windshield.

[0170] The analysis module 805 is used to detect and analyze image information to determine whether there are any obstructions on the windshield.

[0171] The windshield defrosting and defogging device provided in this embodiment can perform the windshield defrosting and defogging method provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0172] Figure 9 This is a structural diagram of the vehicle provided in this application. Figure 5 As shown, the vehicle 900 provided in this embodiment includes: a windshield 901, a controller 902, a windshield defrosting and defogging system 903, and a memory 904. Optionally, the vehicle 900 also includes a communication component 905. The controller 902, the windshield defrosting and defogging system 903, the memory 904, and the communication component 905 are connected via a bus 906.

[0173] In the specific implementation process, the controller 902 executes the computer execution instructions stored in the memory 904, so that the controller 902 controls the windshield defrosting and defogging system 903 to perform the above-mentioned windshield defrosting and defogging method.

[0174] The specific implementation process of controller 902 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so it will not be repeated here.

[0175] In the above embodiments, it should be understood that the controller can be a Central Processing Unit (CPU), or other general-purpose controllers, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose controller can be a microcontroller or any conventional controller. The steps of the method disclosed in this invention can be directly manifested as being executed by a hardware controller, or executed by a combination of hardware and software modules within the controller.

[0176] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0177] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0178] This application also provides a computer program product, including a computer program that, when executed by a controller, implements the above-described method.

[0179] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a controller, implement the above-described method.

[0180] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0181] An exemplary readable storage medium is coupled to a controller, enabling the controller to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the controller. The controller and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the controller and the readable storage medium can exist as discrete components in the device.

[0182] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0183] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0184] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0185] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0186] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0187] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A windshield defrosting and defogging system, characterized in that, The system includes: a first air duct, a second air duct, and an air conditioning unit; The first air duct and the second air duct are respectively disposed on the front and rear sides of the display device on the vehicle dashboard, wherein the first air duct is integrated into the back panel of the display device; The bottoms of the first air duct and the second air duct are connected to the outlet of the air conditioning unit, and multiple air vents are provided at the connection between the first air duct and the second air duct and the vehicle dashboard. The first air duct and the second air duct are used to receive the airflow from the air conditioning unit; The plurality of air vents are used to direct and transmit airflow from the first air duct and / or the second air duct to the windshield.

2. The system according to claim 1, characterized in that, The system also includes electric valves; The electric valve is located at the connection between the first air duct and the second air duct, and at the connection between the air conditioning unit outlet; The electric valve is used to regulate the airflow path formed by the first air duct opening, the second air duct opening, and the air conditioning unit.

3. The system according to any one of claims 1 to 2, characterized in that, Heating wires are also installed in the first and second air ducts; The heating wire is used to heat the airflow in the first air duct and the second air duct.

4. A method for defrosting and defogging a windshield, characterized in that, A controller applied to a vehicle, the controller being communicatively connected to a windshield defrosting and defogging system configured in the vehicle as described in any one of claims 1 to 3; the method comprising: When an obstruction is detected on the windshield, the type of removal is determined based on the pre-acquired environmental information inside and outside the vehicle, including defrosting or defogging. Control parameters are generated based on the clearing type; The control parameters are sent to the windshield defrosting and defogging system so that the air conditioning unit in the windshield defrosting and defogging system adjusts the electric valves based on the control parameters to generate airflow in the first air duct and / or the second air duct to remove the obstruction.

5. The method according to claim 4, characterized in that, The method further includes: Based on the environmental information and the pre-acquired image information of the windshield, a clearing mode is obtained; Accordingly, the generation of control parameters based on the clearing type includes: The control parameters are generated based on the clearing type and the clearing mode.

6. The method according to claim 5, characterized in that, The clearing mode includes a fast mode and an energy-saving mode; then, the clearing mode is obtained based on the environmental information and the pre-acquired image information of the windshield, including: Based on the environmental information and the image information, the temperature difference and humidity inside and outside the vehicle, as well as the coverage area of ​​the obstruction, are determined. If the temperature difference between the inside and outside of the vehicle is greater than a preset temperature threshold, the humidity is greater than a preset humidity threshold, and the coverage area is greater than a preset area threshold, then the fast mode is determined as the clearing mode. If the temperature difference between the inside and outside of the vehicle is less than a preset temperature threshold, the humidity is less than a preset humidity threshold, and the coverage area is less than a preset area threshold, then the energy-saving mode is determined to be the cleaning mode.

7. The method according to claim 6, characterized in that, The clearing mode also includes manual mode and smart mode; therefore, the method further includes: If the driver of the vehicle activates the manual defrosting and defogging function, then the manual mode is determined as the clearing mode; If the driver of the vehicle activates the intelligent defrosting and defogging function, then the intelligent mode is determined as the clearing mode.

8. The method according to claim 7, characterized in that, The method further includes: If the clearing mode is the intelligent mode, the control parameters are adjusted in real time based on the coverage area, the temperature difference, the humidity, and the driver preferences of the vehicle obtained in advance.

9. The method according to claim 4, characterized in that, The method further includes: Acquire the image information of the windshield; The image information is detected and analyzed to determine whether the windshield is obstructed.

10. A vehicle, characterized in that, Includes a windshield, a controller, a windshield defrosting and defogging system as described in any one of claims 1 to 3, and a memory; The memory stores computer-executed instructions; The controller executes the computer execution instructions stored in the memory, causing the controller to control the windshield defrosting and defogging system according to any one of claims 1 to 3 to perform the windshield defrosting and defogging method according to any one of claims 4 to 9.

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