Vehicle glass defogging method, device, equipment and storage medium

Abstract

The application discloses a kind of vehicle-mounted glass defogging method, device, equipment and storage medium, specifically discloses: obtaining the current environmental information of target vehicle-mounted glass, and the wall surface temperature of each wall surface area in target vehicle-mounted glass, according to current environmental information and wall surface temperature determine the current fog point parameter of each wall surface area, compare current fog point parameter with preset fogging danger threshold value, and according to the result of comparison determine the defogging strategy corresponding to each wall surface area, according to defogging strategy to each wall surface area in target vehicle-mounted glass is defogged;Since the application is according to the current fog point parameter of each wall surface area on target vehicle-mounted glass to each wall surface area on target vehicle-mounted glass is defogged, so as to realize the accurate identification of each area on vehicle-mounted glass fogging point, according to the current fog point parameter of each wall surface area selects appropriate defogging strategy and defogged, so as to improve defogging efficiency.

Description

Technical Field

[0001] This invention relates to the field of defogging technology, and in particular to a method, apparatus, equipment and storage medium for defogging vehicle windows. Background Technology

[0002] During vehicle operation, car windows are prone to fogging due to environmental factors, obstructing the view of the driver and other passengers, potentially leading to accidents. A common method is to bond an anti-fog glass panel to a regular glass panel. The thickness of the double-sided adhesive and the sealing effect of the glass adhesive create a closed air cavity between the two panels, preventing the low temperatures of the outside environment from reaching the inner surface of the anti-fog glass panel and maintaining its surface temperature. However, this method is relatively ineffective, affecting the driver's ability to drive normally and resulting in a poor driving experience. Furthermore, current vehicle defogging systems using air conditioning cannot accurately detect the risk of fogging on the windows, leading to delayed and inefficient defogging.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide a method, apparatus, device, and storage medium for defogging vehicle windows, aiming to solve the technical problem that existing technologies cannot accurately identify whether there is a risk of fogging on vehicle windows, resulting in untimely defogging and low defogging efficiency.

[0005] To achieve the above objectives, the present invention provides a method for defogging vehicle windows, the method comprising the following steps:

[0006] Obtain the current environmental information of the target vehicle glass, as well as the wall temperature of each wall area in the target vehicle glass;

[0007] The current fog point parameters for each wall region are determined based on the current environmental information and the wall temperature.

[0008] The current fog point parameters are compared with the preset fogging danger threshold, and the defogging strategy corresponding to each wall area is determined based on the comparison result.

[0009] Defogging is performed on each wall area of ​​the target vehicle glass according to the defogging strategy.

[0010] Optionally, determining the current fog point parameters of each wall region based on the current environmental information and the wall temperature includes:

[0011] Obtain the glass performance parameters of the target vehicle glass;

[0012] The current dew condensation rate of each wall area is determined based on the current environmental information and the wall temperature.

[0013] The current fog point parameters for each wall region are determined based on the glass performance parameters and the current dew condensation rate.

[0014] Optionally, determining the current dew condensation rate of each wall region based on the current environmental information and the wall temperature includes:

[0015] Obtain the vehicle's current driving status;

[0016] Determine the airflow field information of each wall region based on the current driving status;

[0017] Obtain the contact angle of the target vehicle glass and the droplet state of each wall region;

[0018] The condensation heat density information of each wall region is determined based on the contact angle and the droplet state.

[0019] The current dew condensation rate of each wall region is determined based on the condensation heat density information, the airflow field information, the current environmental information, and the wall temperature.

[0020] Optionally, the current environmental information includes: the current cabin temperature and humidity information inside the vehicle cabin, and the current ambient temperature and humidity information of the environment in which the vehicle is located; determining the current fog point parameters of each wall area based on the current environmental information and the wall temperature includes:

[0021] Obtain the glass performance parameters of the target vehicle glass, as well as the vehicle's current location information;

[0022] Based on the current time and the current location information, determine the seasonal information and regional climate information of the area where the vehicle is currently traveling;

[0023] The fog point coefficient weight for the current driving area is set based on the seasonal information and regional climate information.

[0024] The fog point coefficients of the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature, and the glass performance parameters are set according to the fog point coefficient weights respectively.

[0025] The current fog point parameters for each wall region are determined based on the fog point coefficients, the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature, and the glass performance parameters.

[0026] Optionally, comparing the current fog point parameters with a preset fogging hazard threshold and determining the defogging strategy corresponding to each wall area based on the comparison result includes:

[0027] The current fog point parameters are compared with the preset fogging hazard threshold.

[0028] Defogging is stopped when the current fog point parameter is lower than the preset fogging danger threshold.

[0029] When the current fog point parameter is not lower than the preset fogging danger threshold, multiple fog thresholds are set according to the current environmental information and the wall temperature.

[0030] Multiple fogging zones are set according to the preset fogging hazard threshold and the multiple fogging thresholds;

[0031] The current fog point parameter is compared with the multiple fog thresholds respectively, and the fogging interval corresponding to the current fog point parameter is taken as the target fogging interval based on the comparison results;

[0032] The defogging strategy corresponding to each wall area is determined based on the target fogging range.

[0033] Optionally, setting multiple fog thresholds based on the current environmental information and the wall temperature includes:

[0034] Obtain the vehicle's current location information;

[0035] Based on the current time and the current location information, determine the seasonal information and regional climate information of the area where the vehicle is currently traveling;

[0036] Set the threshold weight for the current driving area based on the seasonal information and regional climate information;

[0037] Multiple fog thresholds are set based on the threshold weights, the current environmental information, and the wall temperature.

[0038] Optionally, before comparing the current fog point parameters with a preset fogging hazard threshold and determining the defogging strategy corresponding to each wall area based on the comparison result, the method further includes:

[0039] Obtain the glass performance parameters of the target vehicle glass;

[0040] The glass performance parameters are input into a pre-built fogging simulation model to simulate fogging and obtain the critical fogging conditions of the target vehicle glass.

[0041] Draw a conditional linear graph corresponding to the target vehicle glass based on the aforementioned fogging critical conditions;

[0042] The current fog point parameters are compared with the conditional linear graph, and the comparison results are used to determine whether the target vehicle glass is at risk of fogging.

[0043] If there is a risk of fogging, the step of comparing the current fog point parameters with a preset fogging hazard threshold and determining the defogging strategy corresponding to each wall area based on the comparison result is executed.

[0044] Furthermore, to achieve the above objectives, the present invention also proposes an in-vehicle glass defogger, the in-vehicle glass defogger comprising:

[0045] The information acquisition module is used to acquire the current environmental information of the target vehicle glass, as well as the wall temperature of each wall area in the target vehicle glass;

[0046] A fog point recognition module is used to determine the current fog point parameters of each wall area based on the current environmental information and the wall temperature.

[0047] The strategy formulation module is used to compare the current fog point parameters with the preset fogging danger threshold, and determine the defogging strategy corresponding to each wall area based on the comparison result.

[0048] A defogging module is used to defog each wall area in the target vehicle glass according to the defogging strategy.

[0049] Furthermore, to achieve the above objectives, the present invention also proposes an in-vehicle glass defogging device, which includes: a memory, a processor, and an in-vehicle glass defogging program stored in the memory and executable on the processor, wherein the in-vehicle glass defogging program is configured to implement the steps of the in-vehicle glass defogging method described above.

[0050] In addition, to achieve the above objectives, the present invention also proposes a storage medium storing an in-vehicle glass defogging program, wherein when the in-vehicle glass defogging program is executed by a processor, the steps of the in-vehicle glass defogging method described above are implemented.

[0051] This invention acquires the current environmental information of the target vehicle glass and the wall temperature of each wall area within the target vehicle glass. Based on the current environmental information and wall temperature, it determines the current fog point parameters of each wall area. The current fog point parameters are compared with a preset fogging hazard threshold, and a corresponding defogging strategy is determined for each wall area based on the comparison result. Defogging is then performed on each wall area of ​​the target vehicle glass according to the defogging strategy. Because this invention defogs each wall area of ​​the target vehicle glass based on the current fog point parameters, it achieves accurate identification of fogging points in each area of ​​the vehicle glass and selects an appropriate defogging strategy based on the current fog point parameters of each wall area, thereby improving defogging efficiency. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the structure of an in-vehicle glass defogging device in the hardware operating environment involved in the embodiments of the present invention;

[0053] Figure 2 This is a flowchart illustrating the first embodiment of the vehicle-mounted glass defogging method of the present invention;

[0054] Figure 3 This is a flowchart illustrating the second embodiment of the vehicle-mounted glass defogging method of the present invention;

[0055] Figure 4 This is a structural block diagram of the first embodiment of the vehicle-mounted glass defogger of the present invention.

[0056] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0057] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0058] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of an in-vehicle glass defogging device in the hardware operating environment of an embodiment of the present invention.

[0059] like Figure 1As shown, the vehicle-mounted glass defogger may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk storage device. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0060] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on vehicle window defoggers and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0061] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and an onboard glass defogging program.

[0062] exist Figure 1 In the vehicle-mounted glass defogging device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the vehicle-mounted glass defogging device of the present invention can be set in the vehicle-mounted glass defogging device, and the vehicle-mounted glass defogging device calls the vehicle-mounted glass defogging program stored in the memory 1005 through the processor 1001 and executes the vehicle-mounted glass defogging method provided in the embodiment of the present invention.

[0063] This invention provides a method for defogging vehicle windows, referring to... Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of a vehicle-mounted glass defogging method according to the present invention.

[0064] In this embodiment, the vehicle glass defogging method includes the following steps:

[0065] Step S10: Obtain the current environmental information of the target vehicle glass, and the wall temperature of each wall area in the target vehicle glass.

[0066] It should be understood that the execution subject of the method in this embodiment can be an in-vehicle glass defogging device with data processing, network communication and program operation functions, such as an in-vehicle controller, or other devices or equipment that can achieve the same or similar functions. Here, the above-mentioned in-vehicle glass defogging device (hereinafter referred to as glass defogging device) is used as an example for explanation.

[0067] It should be noted that the target vehicle glass can be either glass requiring fog detection or glass requiring fog prevention. The vehicle glass can be the windshield and rear windshield, or side windows, etc. The aforementioned current environmental information can include temperature and humidity information of the vehicle's surroundings, such as the temperature and humidity of the vehicle's driving environment or the temperature and humidity inside the vehicle's cabin. The aforementioned wall areas can refer to various areas on the walls of the target vehicle glass. The aforementioned wall temperatures can refer to the surface temperatures of various wall areas within the target vehicle glass.

[0068] It should be understood that the glass defogging device in this embodiment can pre-divide the target vehicle glass into multiple areas to achieve defogging accuracy. Because different areas of the vehicle glass may have different risks of fogging, this embodiment can divide the target vehicle glass into multiple areas for fogging identification and defogging respectively.

[0069] Step S20: Determine the current fog point parameters of each wall area based on the current environmental information and the wall temperature.

[0070] It should be noted that the current fog point parameter can be a parameter related to the probability of fogging and the fog concentration of each wall area calculated by the glass defogging equipment based on the current environmental information and wall temperature. For example, the larger the current fog point parameter, the greater the probability of fogging and the greater the fog concentration; the smaller the current fog point parameter, the less likely the probability of fogging and the smaller the fog concentration.

[0071] It should be understood that the risk of fogging and the concentration of fog may vary depending on the driving scenario. Therefore, in order to accurately identify the risk of fogging and the concentration of fog on the target vehicle glass, this embodiment determines the current fog point parameters of each wall area based on the current environmental information and the wall temperature.

[0072] Furthermore, in order to accurately calculate the current fog point parameters, step S20 above may include:

[0073] Obtain the glass performance parameters of the target vehicle glass, as well as the vehicle's current location information;

[0074] Based on the current time and the current location information, determine the seasonal information and regional climate information of the area where the vehicle is currently traveling;

[0075] The fog point coefficient weight for the current driving area is set based on the seasonal information and regional climate information.

[0076] The fog point coefficients of the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature, and the glass performance parameters are set according to the fog point coefficient weights respectively.

[0077] The current fog point parameters for each wall region are determined based on the fog point coefficients, the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature, and the glass performance parameters.

[0078] It should be noted that the current environmental information includes: the current temperature and humidity information inside the vehicle cabin, and the current ambient temperature and humidity information of the environment in which the vehicle is located. The aforementioned current cabin temperature and humidity information can be the temperature and humidity information inside the vehicle cabin, and the aforementioned current ambient temperature and humidity information can be the temperature and humidity information of the vehicle's current driving environment.

[0079] The aforementioned seasonal information can be the current season in the area where the vehicle is currently traveling, and the aforementioned regional climate information can be relevant information about the regional climate of the area where the vehicle is currently traveling, such as tropical monsoon climate, subtropical monsoon climate, temperate monsoon climate, temperate continental climate, and alpine plateau climate. The aforementioned fog point coefficient weight can be the corresponding weight of the coefficients for setting the current temperature and humidity information inside the vehicle cabin, the current ambient temperature and humidity information of the environment in which the vehicle is located, and the glass performance parameters of the vehicle's glass. The aforementioned fog point coefficient includes calculated coefficients for vehicle glass wall temperature, outdoor temperature, outdoor humidity, and vehicle glass material parameters.

[0080] It should be understood that fogging conditions need to be set differently in different scenarios. For example, the fogging conditions can be adjusted according to the actual situation in different times and cities to adapt to different climate and environmental conditions. The coefficients and parameters in Formula 2 below can be set and adjusted according to the actual application scenario and needs to adapt to fogging conditions under different seasons, times, cities, etc. For example, parameters such as the temperature of the vehicle's glass wall, outdoor temperature, and outdoor humidity may change in different seasons, so the fog point coefficient can be adjusted according to the actual situation.

[0081] For example, in cold winters, the temperature of the vehicle's glass walls is low compared to the outside temperature, while humidity is high, which may lead to rapid fogging. Therefore, by adjusting the current cabin temperature and humidity information, the coefficients for the current ambient temperature and humidity information and the wall temperature, the fogging conditions can be made relatively strict, ensuring that the defogging system can be activated promptly under these conditions, thus protecting driving safety. Conversely, in warm summers, the temperature of the vehicle's glass walls is high compared to the outside temperature, while humidity is low, resulting in less fogging. Therefore, by adjusting the coefficients and temperature and humidity parameters, the fogging conditions can be made relatively relaxed, thereby avoiding unnecessary energy consumption.

[0082] Step S30: Compare the current fog point parameters with the preset fogging danger threshold, and determine the defogging strategy corresponding to each wall area based on the comparison result.

[0083] It should be noted that the preset fogging hazard threshold can be a pre-set threshold used to identify the risk of fogging. When the current fog point parameter is close to or exceeds the preset fogging hazard threshold, it indicates that fog is about to appear or has already appeared on the target vehicle glass. The larger the current fog point parameter is than the preset fogging hazard threshold, the greater the fog concentration, and a higher power defogging strategy is required accordingly. If the current fog point parameter is far from the preset fogging hazard threshold, a lower power defogging strategy is adopted or defogging is stopped, thereby reducing power consumption and avoiding energy waste.

[0084] It should be understood that the glass defogger compares the current fog point parameter with a preset fogging hazard threshold to determine whether the current fog point parameter is not lower than the preset fogging hazard threshold. If the current fog point parameter is lower than the preset fogging hazard threshold, it determines whether the difference between the two exceeds a preset difference threshold. If it does not exceed the preset difference threshold, it is determined that the current fog point parameter is close to the preset fogging hazard threshold, indicating a risk of fogging, but the fog is small. In this case, the blower can be started to blow the wall area at a low speed. If it exceeds the preset difference threshold, it is determined that the current fog point parameter is far from the preset fogging hazard threshold, and defogging is not necessary. The blower and air conditioner are turned off to avoid wasting energy.

[0085] If the current fog point parameter is not lower than the preset fogging hazard threshold, then determine whether the difference between the two exceeds the preset difference threshold. If the difference between the two does not exceed the preset difference threshold, then determine that the current fog point parameter does not exceed the preset hazard threshold by too much, and activate a low-power or medium-power defogging strategy to defog, such as controlling the blower to blow the wall area at a low or medium wind speed. If the difference between the two exceeds the preset difference threshold, then determine that the current fog point parameter exceeds the preset hazard threshold by too much, judge that the fog is dense and the risk of fogging is high, activate a high-power defogging strategy, such as controlling the blower to blow at a high wind speed to avoid fogging, and start the air conditioner for heating.

[0086] Furthermore, in order to accurately formulate a defogging strategy, step S30 above may include:

[0087] The current fog point parameters are compared with the preset fogging hazard threshold.

[0088] Defogging is stopped when the current fog point parameter is lower than the preset fogging danger threshold.

[0089] When the current fog point parameter is not lower than the preset fogging danger threshold, the vehicle's current location information is obtained;

[0090] Based on the current time and the current location information, determine the seasonal information and regional climate information of the area where the vehicle is currently traveling;

[0091] Set the threshold weight for the current driving area based on the seasonal information and regional climate information;

[0092] Multiple fog thresholds are set based on the threshold weights, the current environmental information, and the wall temperature;

[0093] Multiple fogging zones are set according to the preset fogging hazard threshold and the multiple fogging thresholds;

[0094] The current fog point parameter is compared with the multiple fog thresholds respectively, and the fogging interval corresponding to the current fog point parameter is taken as the target fogging interval based on the comparison results;

[0095] The defogging strategy corresponding to each wall area is determined based on the target fogging range.

[0096] It should be noted that the threshold weight can be the weight for setting the fog threshold. Based on the season and climate of the current driving area of the vehicle, the fog threshold is correspondingly set in combination with the threshold weight. The above preset fogging danger threshold can be the threshold for judging whether fog will occur, and the above fog threshold can be the threshold for judging the fog intensity. If the current fog point parameter is lower than the preset fogging danger threshold, it is determined that no fog will occur. If the current fog point parameter is not lower than the preset fogging danger threshold, it is determined that fog will occur. After determining that fog will occur, the intensity of the fog is identified according to the fog threshold. If the current fog point parameter is lower than the fog threshold, it is determined that the fog is weak. If the current fog point parameter is not lower than the fog threshold, it is determined that the fog is strong. The above fog threshold can be multiple thresholds. Multiple intervals are correspondingly set according to the multiple fog thresholds. By judging which fogging interval the current fog point parameter is in, the specific fog intensity is determined. For example, the preset fogging danger threshold is A, and the multiple fog thresholds include B, C, and D, and A < B < C < D. Then, three groups of fogging intervals are set as A - B, B - C, and C - D according to the preset fogging danger and the multiple fog thresholds. By judging which fogging interval the current fog point parameter is in, different defogging strategies are formulated. If the current fog point parameter is not in the above fogging interval, it is determined that no fog will occur and no defogging is required; if it is in the A - B interval, it is determined that fog will occur and the fog concentration is low, and a low-power defogging strategy is adopted; if it is in the B - C interval, it is determined that fog will occur and the fog concentration is medium, and a medium-power defogging strategy is adopted; if it is in the C - D interval, it is determined that fog will occur and the fog concentration is high, and a high-power defogging strategy is adopted.

[0097] It should be understood that the specific defogging strategy settings can be adjusted according to actual requirements and design requirements. For example, parameter settings can be made according to factors such as different regions, different seasons, and different time periods to meet the defogging requirements under different conditions. In practical applications, through the division of different K-value ranges and the corresponding defogging strategy settings, automatic defogging processing for different fog degrees can be achieved to ensure that the vehicle window always remains clear and improve driving safety.

[0098] In a specific implementation, for example, a glass defogging device is set with a fogging risk threshold K1 and a fog threshold K2, and K1 < K2. When the current fog point parameter is K, if K < K1, the defogging strategy is to turn off the defogging system. This means that the current atmospheric environment parameters have not approached the fogging condition, so there is no need for defogging treatment, and the defogging system can be turned off to save energy; when K1 ≤ K ≤ K2, the defogging strategy is to start the defogging system and set it to the standard mode. This means that the current atmospheric environment parameters have approached or exceeded the fogging condition, and the defogging system needs to be started and set to the standard mode to ensure that the car window remains clear; when K > K2, the defogging strategy is to start the defogging system and set it to the advanced mode. This means that the current atmospheric environment parameters have significantly exceeded the fogging condition, and the defogging system needs to be started and set to the advanced mode to enhance the defogging effect.

[0099] Further, before the above step S30, it may include:

[0100] Obtain the glass performance parameters of the target vehicle-mounted glass;

[0101] Input the glass performance parameters into a pre-constructed fogging simulation model for fogging simulation to obtain the fogging critical conditions of the target vehicle-mounted glass;

[0102] Draw a conditional linear graph corresponding to the target vehicle-mounted glass according to the fogging critical conditions;

[0103] Compare the current fog point parameter with the conditional linear graph, and judge whether there is a fogging risk for the target vehicle-mounted glass according to the comparison result;

[0104] If there is a fogging risk, execute the step of comparing the current fog point parameter with the preset fogging risk threshold and determining the defogging strategy corresponding to each wall surface area according to the comparison result.

[0105] It should be noted that the glass performance parameters can be the material performance parameters of the target vehicle-mounted glass. For example, the glass performance parameters may include the thickness of the vehicle-mounted glass, the material heat transfer ratio, and the material spectral transmittance. Among them, the glass performance parameters of the glass at different positions and different regions in the vehicle may be different. For example, the glass performance parameters between the front windshield and the side window glass are different. Therefore, the defogging strategies for the vehicle-mounted glass at different positions in the same vehicle can be different. Factors such as the thickness, heat transfer ratio, and material spectral transmittance of different vehicle-mounted glasses will affect the fog point judgment and the setting of defogging conditions.

[0106] It should be understood that the conditional linear graph can be a temperature-humidity curve, representing the critical conditions under which fogging may occur. When both temperature and humidity are below the conditional line on the conditional linear graph, fogging may occur on the vehicle windows, requiring the activation of the defogger system. The conditional line can be plotted through testing of the glass defogger. When the actual temperature, humidity, and other parameter values ​​are all below the aforementioned conditional line, it indicates that the windows may have fogged up, requiring timely defogging to ensure driving safety.

[0107] Step S40: Defog each wall area in the target vehicle glass according to the defogging strategy.

[0108] In a specific implementation, the glass defogger can collect current environmental information of the target vehicle glass, as well as the wall temperature of each wall area within the target vehicle glass, through an ADS (Atmospheric Detection System). An ADS is a sensing system within a vehicle used to detect and collect parameters of the atmospheric environment surrounding the vehicle, such as window wall temperature, cabin temperature, humidity, and outdoor temperature and humidity. The ADS can include multiple sensors and related electronic devices to monitor atmospheric environmental parameters around the vehicle in real time and transmit these parameters to the glass defogger in this embodiment. The glass defogger then uses these parameters to determine whether the window is fogged, thereby controlling the operating mode and parameter settings of the CCM (Climate Control Module) to ensure the window remains clear. The CCM can be a vehicle defogging unit, such as a blower or air conditioning system, to ensure that the window can quickly and effectively clear fog under fogging conditions, improving driving safety.

[0109] This embodiment acquires the current environmental information of the target vehicle glass and the wall temperature of each wall area within the target vehicle glass. Based on the current environmental information and wall temperature, it determines the current fog point parameters of each wall area. The current fog point parameters are compared with a preset fogging hazard threshold, and a corresponding defogging strategy is determined for each wall area based on the comparison result. Defogging is then performed on each wall area of ​​the target vehicle glass according to the defogging strategy. Because this embodiment defogs each wall area of ​​the target vehicle glass based on the current fog point parameters, it achieves accurate identification of fogging points in each area of ​​the vehicle glass and selects an appropriate defogging strategy based on the current fog point parameters of each wall area, thereby improving defogging efficiency.

[0110] refer to Figure 3 , Figure 3 This is a schematic flowchart of a second embodiment of a vehicle-mounted glass defogging method according to the present invention.

[0111] Based on the first embodiment described above, in this embodiment, step S20 includes:

[0112] Step S21: Obtain the glass performance parameters of the target vehicle glass.

[0113] It should be noted that the glass performance parameters can be the material performance parameters of the target vehicle glass. For example, glass performance parameters may include the thickness of the vehicle glass, the material heat transfer ratio, and the material spectral transmittance. The glass performance parameters of glass in different locations and areas of the vehicle may be different. For example, the glass performance parameters of the windshield and the side windows are different. Therefore, the defogging strategy for vehicle glass in different locations in the same vehicle can be different. Factors such as the thickness, heat transfer ratio, and spectral transmittance of different vehicle glass will affect the fog point judgment and the setting of defogging conditions.

[0114] In practice, different defogging strategies are used for glass of different thicknesses. For example, thicker automotive glass typically has a higher heat capacity and can store more heat, which may require a longer heating and defogging time. Therefore, thicker automotive glass may require a longer heating time or a higher heating power to achieve an effective defogging effect.

[0115] Different glass materials with varying heat transfer ratios employ different defogging strategies. Automotive glass with a higher heat transfer ratio can transfer heat generated by the heater to the glass surface more quickly, potentially achieving defogging in a shorter time. In contrast, automotive glass with a lower heat transfer ratio may require a longer heating time or higher heating power.

[0116] Different materials require different defogging strategies for glass with varying spectral transmittance. Furthermore, different automotive glass materials may have different spectral transmittance, meaning they transmit light of different wavelengths differently. This can affect the way and rate at which the automotive glass is heated, thus influencing fog point detection and defogging conditions.

[0117] Therefore, depending on the characteristics and performance parameters of different automotive glass, different fog point detection and defogging conditions may be required for different areas of the automotive glass to achieve the best defogging effect. This requires comprehensive consideration of factors such as the thickness of the automotive glass, heat transfer ratio, and material spectral transmittance, and the determination of the optimal defogging conditions through experiments and tests to ensure that the windows remain clear at all times and improve driving safety.

[0118] Step S22: Determine the current dew condensation rate of each wall area based on the current environmental information and the wall temperature.

[0119] It should be noted that the dew condensation rate can be defined as the amount of water vapor condensed per unit time after the air humidity in each wall area reaches saturation and begins to condense into dew. The dew condensation rate is usually expressed in terms of water vapor mass or volume, with units typically in grams per square meter per hour or millimeters per hour.

[0120] It should be understood that the glass defrosting device in this embodiment can calculate the current dew condensation rate of the wall area based on parameters such as wall temperature, cab temperature, humidity, outdoor temperature, and humidity, referring to the following formula 1, which is the formula for calculating the current dew condensation rate, where K c The current dew condensation rate is represented by T, the temperature of the vehicle's glass wall, T1, the temperature of the cab, and T2, the outdoor temperature. V represents the humidity of the cab and V1 represents the outdoor humidity. a, b, c, and d are coefficients, which can vary depending on the season, time, and region. These coefficients should be set based on the actual situation.

[0121] K c =a(T+T1)+bV+cT2+dV1 Formula 1

[0122] Furthermore, in order to more accurately determine the current dew condensation rate, step S22 above may include:

[0123] Step S221: Obtain the current driving status of the vehicle;

[0124] Step S222: Determine the airflow field information of each wall region based on the current driving state;

[0125] Step S223: Obtain the contact angle of the target vehicle glass and the droplet state of each wall area;

[0126] Step S224: Determine the condensation heat density information of each wall region based on the contact angle and the droplet state;

[0127] Step S225: Determine the current dew condensation rate of each wall region based on the condensation heat density information, the airflow field information, the current environmental information, and the wall temperature.

[0128] It should be noted that the current driving state can refer to the vehicle's current driving conditions, such as high-speed driving, slow driving, continuous driving, intermittent driving, etc. The aforementioned airflow field information can be related to the airflow field affecting each wall area of ​​the target vehicle glass, such as airflow rate, airflow direction, and airflow density. The aforementioned contact angle can be the external tangent of the semi-circular shape naturally formed by the droplet on the surface of the target vehicle glass relative to the plane of the target vehicle glass. The contact angle affects the heat transfer ratio of the vehicle glass; a larger contact angle results in a larger heat transfer ratio, and a smaller contact angle results in a smaller heat transfer ratio. Different contact angles also affect the transmittance of light through the glass. The aforementioned droplet state can be the distribution state of droplets on each wall area of ​​the target vehicle glass, such as the droplet distribution density and quantity.

[0129] Step S23: Determine the current fog point parameters of each wall area based on the glass performance parameters and the current dew condensation rate.

[0130] It should be noted that the glass defogging device in this embodiment determines the current fog point parameters of each wall area based on the glass performance parameters and the current dew condensation rate, referring to the following formula 2, which is the formula for calculating the current fog point parameters, where K is the current fog point parameter, T is the temperature of the vehicle glass wall, T1 is the temperature of the cab, T2 is the outdoor temperature, V is the humidity of the cab, V1 is the outdoor humidity, M is the thickness of the vehicle glass material, P is the heat transfer ratio of the vehicle glass material, Q is the spectral transmittance of the vehicle glass material, and a, b, c, d, e, f, and g are coefficients for the corresponding materials or parameters.

[0131] K = a(T + T1) + bV + cT2 + dV1 + eM + fP + gQ (Formula 2)

[0132] In the specific implementation, the glass defogging equipment collects the following data: the temperature of the vehicle glass wall is 20 degrees Celsius, the temperature of the cab is 25 degrees Celsius, the outdoor temperature is 10 degrees Celsius, the humidity of the cab is 60%, the outdoor humidity is 50%, the thickness of the vehicle glass material is 5mm, the heat transfer ratio of the vehicle glass material is 0.9, and the spectral transmittance of the vehicle glass material is 0.8. For example, the coefficients are a = 0.2, b = 0.3, c = 0.1, d = 0.15, e = 0.05, f = 0.2, g = 0.1. Substituting the above values ​​into the formula, the fogging point K is calculated as follows: K = 0.2(20+25) + 0.3(60) + 0.1(10) + 0.15(50) + 0.05(5) + 0.2(0.9) + 0.1(0.8), thus determining the current fogging point parameter as 36.11. Based on the calculated value of the current fog point parameter K, it can be compared with a preset threshold to determine whether the defogging system needs to be activated or the defogging strategy adjusted. For example, if the value of K is close to or reaches the preset fogging condition threshold, the vehicle can select an appropriate defogging strategy, activating the blower and adjusting the airflow speed to accelerate defogging. If the value of K is far from the fogging danger value, it means that defogging is not needed in the current environment, and the air conditioning can be turned off to save energy. In this way, by calculating the current fog point parameter K based on real-time sensor data and making intelligent judgments and adjustments based on thresholds, an efficient automatic fog point detection method for automotive glass can be achieved.

[0133] This embodiment obtains the glass performance parameters of the target vehicle glass, determines the current dew condensation rate of each wall area based on the current environmental information and the wall temperature, and determines the current fog point parameters of each wall area based on the glass performance parameters and the current dew condensation rate. Because this embodiment combines the glass performance parameters and the current dew condensation rate to determine the current fog point parameters of each wall area, it comprehensively identifies the fogging risk and fog concentration in each area of ​​the vehicle glass based on the performance and material differences of different vehicles and different glasses. Furthermore, it incorporates the dew condensation rate of each wall area on the vehicle glass caused by the current environment for comprehensive calculation, thereby improving the accuracy of fog point parameter calculation and achieving precise identification of the fogging risk of the vehicle glass.

[0134] Furthermore, this embodiment of the invention also proposes a storage medium storing an in-vehicle glass defogging program, which, when executed by a processor, implements the steps of the in-vehicle glass defogging method described above.

[0135] Since this storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0136] Reference Figure 4 , Figure 4This is a structural block diagram of the first embodiment of the vehicle-mounted glass defogger of the present invention.

[0137] like Figure 4 As shown, the vehicle-mounted glass defogger proposed in this embodiment of the invention includes:

[0138] The information acquisition module 10 is used to acquire the current environmental information of the target vehicle glass, as well as the wall temperature of each wall area in the target vehicle glass;

[0139] Fog point recognition module 20 is used to determine the current fog point parameters of each wall area based on the current environmental information and the wall temperature;

[0140] The strategy formulation module 30 is used to compare the current fog point parameters with the preset fogging danger threshold, and determine the defogging strategy corresponding to each wall area based on the comparison result.

[0141] The defogging module 40 is used to defog each wall area in the target vehicle glass according to the defogging strategy.

[0142] Furthermore, the fog point recognition module 20 is also used to acquire the glass performance parameters of the target vehicle glass; determine the current dew condensation rate of each wall area based on the current environmental information and the wall temperature; and determine the current fog point parameters of each wall area based on the glass performance parameters and the current dew condensation rate.

[0143] Furthermore, the fog spot recognition module 20 is also used to acquire the current driving state of the vehicle; determine the airflow field information of each wall area based on the current driving state; acquire the contact angle of the target vehicle glass and the droplet state of each wall area; determine the condensation heat density information of each wall area based on the contact angle and the droplet state; and determine the current dew condensation rate of each wall area based on the condensation heat density information, the airflow field information, the current environmental information, and the wall temperature.

[0144] Furthermore, the fog point recognition module 20 is also used to acquire the glass performance parameters of the target vehicle glass and the vehicle's current location information; determine the seasonal information and regional climate information of the current driving area based on the current time and the current location information; set the fog point coefficient weight of the current driving area based on the seasonal information and regional climate information; set the fog point coefficients of the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature, and the glass performance parameters based on the fog point coefficient weights; and determine the current fog point parameters of each wall area based on each fog point coefficient, the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature, and the glass performance parameters.

[0145] Furthermore, the strategy formulation module 30 is also used to compare the current fog point parameter with a preset fogging hazard threshold; stop defogging when the current fog point parameter is lower than the preset fogging hazard threshold; set multiple fog thresholds based on the current environmental information and the wall temperature when the current fog point parameter is not lower than the preset fogging hazard threshold; set multiple fogging intervals based on the preset fogging hazard threshold and the multiple fog thresholds; compare the current fog point parameter with the multiple fog thresholds respectively, and take the fogging interval corresponding to the current fog point parameter as the target fogging interval based on the comparison result; and determine the defogging strategy corresponding to each wall area based on the target fogging interval.

[0146] Furthermore, the strategy formulation module 30 is also used to obtain the vehicle's current location information; determine the seasonal information and regional climate information of the vehicle's current driving area based on the current time and the current location information; set the threshold weight of the current driving area based on the seasonal information and regional climate information; and set multiple fog thresholds based on the threshold weight, the current environmental information, and the wall temperature.

[0147] Furthermore, the strategy formulation module 30 is also used to obtain the glass performance parameters of the target vehicle glass; input the glass performance parameters into a pre-constructed fogging simulation model to perform fogging simulation and obtain the fogging critical conditions of the target vehicle glass; draw a conditional linear graph corresponding to the target vehicle glass according to the fogging critical conditions; compare the current fog point parameters with the conditional linear graph, and determine whether the target vehicle glass has a fogging risk based on the comparison result; if there is a fogging risk, then execute the step of comparing the current fog point parameters with a preset fogging danger threshold and determining the defogging strategy corresponding to each wall area based on the comparison result.

[0148] This embodiment acquires the current environmental information of the target vehicle glass and the wall temperature of each wall area within the target vehicle glass. Based on the current environmental information and wall temperature, it determines the current fog point parameters of each wall area. The current fog point parameters are compared with a preset fogging hazard threshold, and a corresponding defogging strategy is determined for each wall area based on the comparison result. Defogging is then performed on each wall area of ​​the target vehicle glass according to the defogging strategy. Because this embodiment defogs each wall area of ​​the target vehicle glass based on the current fog point parameters, it achieves accurate identification of fogging points in each area of ​​the vehicle glass and selects an appropriate defogging strategy based on the current fog point parameters of each wall area, thereby improving defogging efficiency.

[0149] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0150] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0151] In addition, for technical details not described in detail in this embodiment, please refer to the vehicle glass defogging method provided in any embodiment of the present invention, which will not be repeated here.

[0152] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0153] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0154] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0155] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for defrosting vehicle windows, characterized in that, The vehicle-mounted glass defogging method includes: Obtain the current environmental information of the target vehicle glass, as well as the wall temperature of each wall area in the target vehicle glass; The current fog point parameters for each wall region are determined based on the current environmental information and the wall temperature. The current fog point parameters are compared with the preset fogging danger threshold, and the defogging strategy corresponding to each wall area is determined based on the comparison result. Defogging is performed on each wall area of ​​the target vehicle glass according to the defogging strategy; The step of determining the current fog point parameters of each wall region based on the current environmental information and the wall temperature includes: Obtain the glass performance parameters of the target vehicle glass; Obtain the vehicle's current driving status; Determine the airflow field information of each wall region based on the current driving status; Obtain the contact angle of the target vehicle glass and the droplet state of each wall region; The condensation heat density information of each wall region is determined based on the contact angle and the droplet state. The current dew condensation rate of each wall region is determined based on the condensation heat density information, the airflow field information, the current environmental information, and the wall temperature. The current fog point parameters of each wall area are determined based on the glass performance parameters and the current dew condensation rate. The current environmental information includes: the current temperature and humidity information inside the vehicle cabin, and the current ambient temperature and humidity information of the environment in which the vehicle is located; determining the current fog point parameters of each wall area based on the current environmental information and the wall temperature includes: Obtain the glass performance parameters of the target vehicle glass, as well as the vehicle's current location information; Based on the current time and the current location information, determine the seasonal information and regional climate information of the area where the vehicle is currently traveling; The fog point coefficient weight for the current driving area is set based on the seasonal information and regional climate information. The fog point coefficients of the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature, and the glass performance parameters are set according to the fog point coefficient weights respectively. The current fog point parameters of each wall area are determined based on the fog point coefficient, the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature, and the glass performance parameters. The step of comparing the current fog point parameters with a preset fogging hazard threshold and determining the defogging strategy corresponding to each wall area based on the comparison result includes: The current fog point parameters are compared with the preset fogging hazard threshold. Defogging is stopped when the current fog point parameter is lower than the preset fogging danger threshold. When the current fog point parameter is not lower than the preset fogging danger threshold, the vehicle's current location information is obtained; Based on the current time and the current location information, determine the seasonal information and regional climate information of the area where the vehicle is currently traveling; Set the threshold weight for the current driving area based on the seasonal information and regional climate information; Multiple fog thresholds are set based on the threshold weights, the current environmental information, and the wall temperature; Multiple fogging zones are set according to the preset fogging hazard threshold and the multiple fogging thresholds; The current fog point parameter is compared with the multiple fog thresholds respectively, and the fogging interval corresponding to the current fog point parameter is taken as the target fogging interval based on the comparison results; The defogging strategy corresponding to each wall area is determined based on the target fogging range.

2. The vehicle-mounted glass defogging method as described in claim 1, characterized in that, Before comparing the current fog point parameters with a preset fogging hazard threshold and determining the defogging strategy corresponding to each wall area based on the comparison result, the method further includes: Obtain the glass performance parameters of the target vehicle glass; The glass performance parameters are input into a pre-built fogging simulation model to simulate fogging and obtain the critical fogging conditions of the target vehicle glass. Draw a conditional linear graph corresponding to the target vehicle glass based on the aforementioned fogging critical conditions; The current fog point parameters are compared with the conditional linear graph, and the comparison results are used to determine whether the target vehicle glass is at risk of fogging. If there is a risk of fogging, the step of comparing the current fog point parameters with a preset fogging hazard threshold and determining the defogging strategy corresponding to each wall area based on the comparison result is executed.

3. A vehicle-mounted glass defogger, characterized in that, The vehicle-mounted glass defogger includes: The information acquisition module is used to acquire the current environmental information of the target vehicle glass, as well as the wall temperature of each wall area in the target vehicle glass; The fog point recognition module is used to determine the current fog point parameters of each wall area based on the current environmental information and the wall temperature. The fog point recognition module is also used to acquire the glass performance parameters of the target vehicle glass; determine the current dew condensation rate of each wall area based on the current environmental information and the wall temperature; determine the current fog point parameters of each wall area based on the glass performance parameters and the current dew condensation rate; the fog point recognition module is also used to acquire the current driving state of the vehicle; determine the airflow field information of each wall area based on the current driving state; acquire the contact angle of the target vehicle glass and the droplet state of each wall area; determine the condensation heat density information of each wall area based on the contact angle and the droplet state; and determine the fog point parameters of each wall area based on the condensation heat density information, the airflow field information, the current environmental information, and the wall temperature. The current dew condensation rate of each wall area, the current environmental information including: the current cabin temperature and humidity information inside the vehicle cabin, and the current ambient temperature and humidity information of the environment in which the vehicle is located, the fog point recognition module is also used to obtain the glass performance parameters of the target vehicle glass, and the current location information of the vehicle; determine the seasonal information and regional climate information of the current driving area of ​​the vehicle based on the current time and the current location information; set the fog point coefficient weight of the current driving area based on the seasonal information and regional climate information; set the fog point coefficient of the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature and the glass performance parameters respectively based on the fog point coefficient weight; determine the current fog point parameters of each wall area based on each fog point coefficient, the current cabin temperature and humidity information, the current ambient temperature and humidity information, the wall temperature and the glass performance parameters; A strategy formulation module is used to compare the current fog point parameter with a preset fogging hazard threshold, and determine the defogging strategy corresponding to each wall area based on the comparison result. The strategy formulation module is also used to compare the current fog point parameter with the preset fogging hazard threshold; stop defogging when the current fog point parameter is lower than the preset fogging hazard threshold; obtain the vehicle's current location information when the current fog point parameter is not lower than the preset fogging hazard threshold; determine the seasonal information and regional climate information of the vehicle's current driving area based on the current time and the current location information; set a threshold weight for the current driving area based on the seasonal information and regional climate information; set multiple fog thresholds based on the threshold weights, the current environmental information, and the wall temperature; set multiple fogging intervals based on the preset fogging hazard threshold and the multiple fog thresholds; compare the current fog point parameter with each of the multiple fog thresholds, and use the fogging interval corresponding to the current fog point parameter as the target fogging interval based on the comparison result; and determine the defogging strategy corresponding to each wall area based on the target fogging interval. A defogging module is used to defog each wall area in the target vehicle glass according to the defogging strategy.

4. A vehicle-mounted glass defogger, characterized in that, The vehicle-mounted glass defogging device includes: a memory, a processor, and a vehicle-mounted glass defogging program stored in the memory and executable on the processor, the vehicle-mounted glass defogging program being configured to implement the vehicle-mounted glass defogging method as described in any one of claims 1 to 2.

5. A storage medium, characterized in that, The storage medium stores a vehicle glass defogging program, which, when executed by a processor, implements the vehicle glass defogging method as described in any one of claims 1 to 2.

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