Vehicle control method, device and storage medium

Abstract

This application provides a vehicle control method, apparatus, and storage medium. The method includes: acquiring the number N of living beings riding in the vehicle and the temperature T of the vehicle's windshield. b The vehicle's air conditioner's internal / external circulation ratio K and air volume M, as well as the humidity level Q of the outside air obtained from the cloud. w According to Q w N, K, and M are used to obtain the humidity Q inside the vehicle. n According to T b Obtain the critical humidity level Q of the air inside the vehicle. b According to Q n and Q b The method determines the fogging risk value R of the windshield; compares R with a preset fogging risk threshold value R0; and executes a corresponding dehumidification strategy on the vehicle's interior air based on the comparison result. This method can dehumidify the inner surface of the windshield before fogging occurs, reducing the probability of fogging. Furthermore, it automatically executes the dehumidification strategy when needed, eliminating the need for user intervention while driving and improving driving safety.

Description

Technical Field

[0001] This application relates to vehicle technology, and more particularly to a vehicle control method, device, and storage medium. Background Technology

[0002] With the advancement of technology, users are demanding increasingly intelligent features from their vehicles. Due to temperature differences between the inside and outside of the car, the windshield is prone to fogging, causing blurred vision for the driver.

[0003] Currently, after a vehicle fogs up, the driver activates the defrost function via the vehicle's large screen or a soft button, turning on the air conditioning to remove the fog from the windshield surface through the defrost vents. However, when the vehicle is traveling at high speeds, the driver's attention is diverted to controlling the vehicle to defrost the windshield, which significantly impacts driving safety.

[0004] Therefore, how to prevent fogging of a vehicle's windshield is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a vehicle control method, device, and storage medium to solve the problem of fogging on the windshield of a vehicle.

[0006] In a first aspect, this application provides a vehicle control method, the method comprising:

[0007] Obtain the number N of living beings riding in the vehicle, and the temperature T of the vehicle's windshield. b The vehicle's air conditioner's internal / external circulation ratio K and air volume M, and the vehicle's external air humidity Q obtained from the cloud. w ;

[0008] According to Q w N, K, and M are used to obtain the humidity Q of the air inside the vehicle. n ;

[0009] According to the T b Obtain the critical humidity level Q of the air inside the vehicle. b ;

[0010] According to Q n and the Q b Determine the fogging risk value R of the windshield, wherein R is positively correlated with the fogging risk;

[0011] The comparison result between R and the preset fogging risk threshold value R0 is obtained, and the corresponding dehumidification strategy is executed on the air inside the vehicle according to the comparison result to prevent the windshield from fogging.

[0012] Optionally, the step of implementing a corresponding dehumidification strategy for the vehicle interior air based on the comparison result includes:

[0013] If R is less than R0 and the vehicle is not currently dehumidifying the air inside the vehicle, then the vehicle remains in a non-dehumidified state.

[0014] If R is less than R0 and the vehicle is currently dehumidifying the air inside the vehicle, then the dehumidification operation is stopped.

[0015] If R is greater than or equal to R0, and Q w Less than or equal to Q n The air inside the vehicle is dehumidified by increasing the proportion of external air circulation in the air conditioner.

[0016] If R is greater than or equal to R0, and Q w Greater than the stated Q n Then, the target evaporation temperature Te of the air conditioner is obtained, and the air conditioner is controlled to dehumidify the air inside the vehicle by first cooling and then heating to Te.

[0017] Optionally, obtaining the target evaporation temperature Te of the air conditioner includes:

[0018] Obtain the temperature T inside the vehicle n And, the external temperature T of the vehicle is obtained from the cloud. w ;

[0019] According to the T n The T w The K, the M, the Q w The Q n The inlet air temperature Tei and the inlet air humidity Q of the evaporator of the air conditioner are obtained. e ;

[0020] According to the Tei and the Q e The dew point temperature Ted of the air at the evaporator inlet is obtained.

[0021] Based on the Ted, obtain the Te.

[0022] Optionally, obtaining Te based on Ted includes:

[0023] If R is greater than or equal to R0 and less than R1, then Te is obtained based on the difference between Ted and t1;

[0024] If R is greater than or equal to R1 and less than R2, then Te is obtained based on the difference between Ted and t2;

[0025] If R is greater than or equal to R2, then Te is obtained based on the difference between Ted and t3;

[0026] Among them, R0 <R1<R2<R3,t1<t2<t3。

[0027] Optionally, if the dehumidification strategy is any strategy for dehumidifying the air inside the vehicle, the method further includes:

[0028] Record the duration of this dehumidification process;

[0029] When the duration is greater than the preset calibration duration T i When this happens, stop the dehumidification operation.

[0030] Optionally, the step according to Q w N, K, and M are used to obtain the humidity Q of the air inside the vehicle. n ,include:

[0031] According to Q w The humidity Q of the air inside the vehicle is obtained using the following formula, where N, K, and M are used. n :

[0032] Q n =Q w +(Q0-Q out ) / (1-K)M

[0033] Where Q0=NQ r F r Q represents the total amount of water vapor produced per second by a living being riding in the vehicle. r F represents the amount of water vapor produced by a single respiration of a living organism. r Q is the respiratory rate of a living organism. out This indicates the amount of water vapor consumed per second by the evaporator for dehumidification.

[0034] Optionally, the step according to Q n and the Q b Determining the fogging risk R value of the windshield includes:

[0035] If the Q n Greater than or equal to Q b Then the value of R is a preset value;

[0036] If the Q n Less than the Q b Then the value of R is the value of Q. b With the Q n The reciprocal of the difference.

[0037] Secondly, this application also provides a vehicle control device, the device comprising:

[0038] The first acquisition module is used to acquire the number N of living beings riding in the vehicle and the windshield temperature T of the vehicle. b The vehicle's air conditioner's internal / external circulation ratio K and air volume M, and the vehicle's external air humidity Q obtained from the cloud. w ;

[0039] The second acquisition module is used to obtain information based on the Q. w N, K, and M are used to obtain the humidity Q of the air inside the vehicle. n ;

[0040] The third acquisition module is used to obtain information based on the T. b Obtain the critical humidity level Q of the air inside the vehicle. b ;

[0041] The fogging risk value determination module is used to determine the fogging risk value based on the Q. n and the Q b Determine the fogging risk value R of the windshield, wherein R is positively correlated with the fogging risk;

[0042] The execution module is used to obtain the comparison result between R and the preset fogging risk threshold value R0, and to execute the corresponding dehumidification strategy on the air inside the vehicle according to the comparison result to prevent the windshield from fogging.

[0043] Thirdly, this application also provides a vehicle, including: a vehicle body, a control device, an air conditioner, a temperature sensor, and a communication interface for interacting with other devices;

[0044] The control device is used to perform the vehicle control method as described in any of the first aspects.

[0045] Fourthly, this application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the vehicle control method as described in any of the first aspects.

[0046] The vehicle control method, device, and storage medium provided in this application obtain the number N of living beings riding in the vehicle and the temperature T of the vehicle's windshield. b The vehicle's air conditioner's internal / external circulation ratio K and air volume M, as well as the humidity level Q of the outside air obtained from the cloud. w Then according to Q w N, K, and M are used to obtain the humidity Q inside the vehicle. n Then, according to T bObtain the critical humidity level Q of the air inside the vehicle. b Furthermore, according to Q n and Q b The method determines the fogging risk value R of the windshield; finally, it compares R with a preset fogging risk threshold R0, and then applies a corresponding dehumidification strategy to the vehicle's interior air based on the comparison result. Using the method provided in this application, a corresponding dehumidification strategy is selected based on the comparison result between the vehicle's fogging risk and the preset fogging risk threshold R0. Dehumidification can be completed before fogging occurs on the inner surface of the windshield, reducing the probability of fogging. Furthermore, the dehumidification strategy is automatically executed when needed, eliminating the need for the user to operate the vehicle while driving, thus improving driving safety. Attached Figure Description

[0047] 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.

[0048] Figure 1 A schematic diagram illustrating the application scenario of the vehicle control method provided in this application;

[0049] Figure 2 A schematic flowchart of a vehicle control method provided in an embodiment of this application;

[0050] Figure 3 A schematic diagram illustrating the mapping relationship between the critical humidity content of air inside a vehicle and temperature, provided for an embodiment of this application;

[0051] Figure 4 A schematic flowchart illustrating a second embodiment of a vehicle control method provided in this application;

[0052] Figure 5 A schematic flowchart illustrating a third embodiment of a vehicle control method provided in this application;

[0053] Figure 6 A schematic flowchart of a fourth embodiment of a vehicle control method provided in this application;

[0054] Figure 7 This is a schematic diagram of the structure of a vehicle control device provided in an embodiment of this application;

[0055] Figure 8 This is a structural schematic diagram of a vehicle provided in an embodiment of this application.

[0056] The accompanying drawings have illustrated 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 specific 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] First, let me explain the terms used in this application:

[0059] Moisture content: refers to the mass of water vapor mixed in one kilogram of dry air, measured in g / kg.

[0060] Relative humidity: refers to the percentage of the actual water vapor pressure in the air to the saturated water vapor pressure at the current temperature. It reflects the degree to which the air is close to saturated air. It can also be described as the percentage of the mass of water vapor contained in a certain humid air to the mass of water vapor contained in saturated air at the same temperature and pressure.

[0061] Critical moisture content: This refers to the mass of water vapor mixed in one kilogram of dry air at a specific relative humidity and temperature. The specific relative humidity is set empirically. For example, air with a relative humidity of 80%–90% is a mixture of fog and haze; therefore, a specific relative humidity can be set at 80%. Fog will form at moisture contents exceeding 80%. Correspondingly, the moisture content in air with a relative humidity of 80% is the critical moisture content.

[0062] Dew point temperature: refers to the temperature at which moist air can be cooled to water vapor saturation under constant air pressure and constant water vapor content.

[0063] The main reason why a vehicle's windshield fogs up is that the temperature of the window glass is lower than the dew point temperature of the air. When the air humidity is constant, if the temperature of the window glass is lower than the dew point temperature, the humid air will encounter the cold glass, and the water vapor will condense on the inner surface of the window, thus causing the windshield to fog up.

[0064] To address the above reasons, the problem of fogging can be solved by reducing the humidity of the air inside the vehicle or increasing the temperature of the glass. Therefore, the two most common defogging methods used in vehicles are:

[0065] The first method is to turn on the air conditioner's heater and blow it onto the windshield of the vehicle. This will raise the temperature of the windshield above the temperature of the air inside the vehicle, and the fog will disappear.

[0066] The second method is to turn on the dehumidification function of the air conditioner. The evaporator of the air conditioner starts working, condensing the humid air into water and then expelling it. The air is then heated and discharged into the vehicle, eliminating some of the water vapor in the air, thus achieving the dehumidification effect.

[0067] Figure 1 This is a schematic diagram illustrating the application scenario of the vehicle control method provided in this application, such as... Figure 1 As shown in the diagram, in this scenario, after the windshield fogs up, the vehicle owner needs to turn on the air conditioning's defrost mode to clear the fog. However, while driving, if the driver notices the windshield fogging up and manually activates the defrost function via the vehicle's large screen or a soft button, this distracts the driver from controlling the vehicle, creating a safety hazard while driving.

[0068] In view of the above problems, the inventors discovered during their research in this field that by using parameters obtained from existing vehicle components to assess the risk of fogging on the vehicle's windshield, and when the risk of fogging is high, the vehicle's air conditioning is automatically controlled to enter dehumidification mode. An appropriate dehumidification strategy is then employed to dehumidify the air inside the vehicle, reducing the risk of fogging on the inner surface of the windshield and improving vehicle driving safety. Based on this, this application proposes a vehicle control method, device, and storage medium.

[0069] It should be understood that the vehicles involved in this application can be new energy vehicles, traditional fuel vehicles, hybrid vehicles, or any means of transportation that requires defogging, such as sightseeing cable cars, subways, trains, and airplanes. It should be noted that the vehicles involved must have a defogging device, such as an air conditioner or dehumidifier. In this application, the defogging device is uniformly referred to as an air conditioner.

[0070] It should be understood that the vehicle control method provided in this application is applicable to the windshield of a vehicle, and may also be applied to the side windows of a vehicle.

[0071] The subject of this application may be an in-vehicle terminal with processing capabilities or an in-vehicle controller with processing capabilities.

[0072] The following describes the technical solution of this application and how it solves the aforementioned technical problems, using a vehicle-mounted terminal as the execution subject as an example, in conjunction with specific embodiments. The following 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.

[0073] Figure 2 This is a schematic flowchart illustrating a vehicle control method provided in an embodiment of this application. Figure 2 As shown, the method may include the following steps:

[0074] S101. Obtain the number of living beings N in the vehicle and the temperature T of the vehicle's windshield. b The vehicle's air conditioner's internal / external circulation ratio K and air volume M, as well as the humidity level Q of the outside air obtained from the cloud. w .

[0075] In this solution, fogging on the inner surface of the vehicle's windshield is related to the humidity level of the air inside the vehicle; therefore, it is necessary to determine the humidity level of the air inside the vehicle. When the vehicle is started and the air conditioning is turned on, the onboard terminal uses existing equipment to acquire the necessary parameters in real time to determine the humidity level of the air inside the vehicle.

[0076] The number of living beings N in the vehicle can be determined by detecting the weight on the seat using seat sensors. If the seat is occupied, the seat sensors will send back a seat occupancy signal. The number of seat occupancy signals determines the number of living beings N in the vehicle. Alternatively, the number of living beings N in the vehicle can be determined by using images of the vehicle's interior captured by an in-vehicle camera and then using image processing technology.

[0077] It should be noted that the living beings riding in the vehicle include, but are not limited to, humans, as well as other animals that breathe, such as cats or dogs, and this application does not impose any restrictions.

[0078] The temperature T of the inner surface of the windshield is obtained by a temperature sensor on the inner surface of the windshield. b .

[0079] The air conditioner's internal and external circulation ratio K (unit: %) and air output volume M (unit: kg / s) are obtained through the air conditioner controller.

[0080] The in-vehicle terminal can proactively request the external air humidity level from the cloud server, or the cloud server can periodically send the external air humidity level to the in-vehicle terminal. For example, the in-vehicle terminal sends a query request for the external air humidity level to the cloud server. This query request includes the vehicle's identification information and the region identifier. The identification information is used by the cloud server to verify whether the user's vehicle has the authority to obtain the regional air humidity level, and the region identifier is used by the cloud server to query the air humidity level of that region. The in-vehicle terminal receives the regional air humidity level value returned by the cloud server as the external air humidity level Q. w (Unit: g / kg)

[0081] It should be noted that the cloud server can query the air humidity of the region by calling data from the meteorological bureau's official website via the network, or by obtaining it through a preset model based on light intensity, regional temperature, and rainfall. This application does not impose any restrictions.

[0082] Optionally, when the air conditioner is on, the above parameters can be obtained in real time or at preset time intervals.

[0083] S102, according to Q w N, K, and M are used to obtain the humidity Q inside the vehicle. n ;

[0084] One possible implementation is to pre-store the data according to the above Q within the vehicle. n Q w The equations are established using parameters N, K, and M, and the parameters and Q obtained from the above equations are stored in advance. n The mapping formula. Based on the obtained Q w The parameters N, K, and M can be obtained by solving the above parameters and Q. n The formula for the mapping relationship between them yields the humidity Q of the air inside the vehicle. n (Unit: g / kg), this Q n It indicates the amount of water vapor in the air inside the vehicle, used to determine the risk of fogging on the vehicle's windshield.

[0085] Another possible implementation involves deploying a moisture content model on the vehicle, which is pre-programmed with a moisture content model containing Q. w N, K, M and Q n The sample dataset was used for training. Therefore, the vehicle acquires Q... w After N, K, and M, Q can be obtained through this moisture content model. w Q corresponding to N, K and M n .

[0086] Optionally, when detecting the vehicle's interior humidity Q when the vehicle windows are open. n Equal to the humidity of the air outside the vehicle, Q w .

[0087] S103, according to T b Obtain the critical humidity level Q of the air inside the vehicle. b .

[0088] In this step, the critical humidity level Q of the air inside the vehicle is determined. b Q represents the moisture content in the air at a certain temperature, when the relative humidity (Φ) reaches the level required for fogging. Therefore, Q b Temperature T of the vehicle's windshield bThere is a mapping relationship between relative humidity Φ and the relative humidity. The relative humidity for fogging of the vehicle's windshield can be set empirically, either as a fixed value of 80%, or as 75% or 85%. This solution does not impose any restrictions.

[0089] Specifically, based on the temperature T of the inner surface of the windshield. b Get Q b You can query T b and Q b A graph showing the mapping relationship (enthalpy-humidity diagram / enthalpy-humidity table) or T b and Q b The formula for the mapping relationship is used to obtain the critical humidity level Q of the air inside the vehicle. b .

[0090] For example, Figure 3 This application provides a schematic diagram illustrating the mapping relationship between the critical humidity content and temperature of air inside a vehicle, as shown in the embodiments. Figure 3 As shown in the figure, the curve represents the relationship between temperature and the critical humidity level inside a vehicle at 80% relative humidity. (This information was obtained through a search...) Figure 3 It can conveniently obtain the vehicle windshield temperature (T). b The corresponding critical air humidity level Q b The above Figure 3 T corresponding to the middle curve b With Q b Record, generate a mapping table, and use T b You can also get Q by querying the mapping table. b .

[0091] For example, according to Q b T b The fitting formula Q with mapping relationship established by Φ b =F(T) b ,Φ), where the value of Φ can be a preset value, such as 80%, or it can be based on T. b Different preset values ​​corresponding to the range. Therefore, it is possible to determine the value based on T. b Q is obtained through this fitting formula. b .

[0092] For example, T b There are multiple mapping relationships between T and relative humidity φ, as shown in Table 1. b Temperature range, obtain the corresponding preset Φ value within the corresponding range.

[0093] Table (1)

[0094] <![CDATA[T b <T b1 ]]> <![CDATA[T b1 <T b <T b2 ]]> <![CDATA[T b2 <T b <T b3 ]]> <![CDATA[T b3 <T b <T b4 ]]> <![CDATA[Φ1]]> <![CDATA[Φ2]]> <![CDATA[Φ3]]> <![CDATA[Φ4]]>

[0095] Among them, T b1 Tb2 T b3 T b4 T represents different preset temperatures. b1 <T b2 <T b3 <T b4 , Φ1<φ2<φ3<φ4.

[0096] S104, according to Q n and Q b Determine the fogging risk value R for the windshield, where R is positively correlated with the fogging risk.

[0097] In this step, the higher the humidity content of the air inside the vehicle, the greater the likelihood of fogging. Therefore, based on the humidity content Q of the air inside the vehicle obtained above... n Critical moisture content Q of the air inside the vehicle b The fogging risk value R of the windshield can be determined. This R value represents the magnitude of the risk of fogging on the vehicle's windshield. There is a positive correlation between R and the vehicle's fogging risk; the larger the R value, the greater the fogging risk. This application does not limit the range of values ​​for R; it can be determined based on actual needs. For example, the range of R values ​​is R greater than 0.

[0098] One possible implementation is when Q n and Q b The method for determining the fogging risk value R differs depending on the magnitude relationship between the two values.

[0099] For example, when the humidity Q of the air inside the vehicle n Greater than the critical moisture content Q of the air inside the vehicle b When the humidity inside the vehicle is high, the inner surface of the windshield has begun to fog up. At this time, R is set to a preset value, which is much greater than the preset fogging risk threshold value R0. For example, the preset value is ten times R0.

[0100] For example, when the humidity Q of the air inside the vehicle... n Less than the critical moisture content Q of the air inside the vehicle b At this point, it is necessary to determine the vehicle's fogging risk value, and set Q... n and Q b Establish a functional relationship with R, and determine R through this functional relationship. For example, Q... n and Q b The functional relationship established with R is that R equals Q. b With Q n The reciprocal of the difference.

[0101] Another possible implementation could be to pre-define Q. n Q bThe mapping relationship between Q, R, and Q can be used to obtain the value based on Q. n and Q b Obtain the corresponding R. Alternatively, a model can be obtained using pre-trained fog risk values, utilizing Q. n and Q b Get the corresponding R.

[0102] S105. Obtain the comparison result between R and the preset fogging risk threshold value R0, and execute the corresponding dehumidification strategy on the air inside the vehicle according to the comparison result to prevent fogging of the windshield.

[0103] In this step, after obtaining the R value, it is necessary to determine whether a dehumidification strategy is being implemented for the vehicle's interior air corresponding to that R value, and if so, which dehumidification strategy is being implemented. This dehumidification strategy is used to prevent fogging of the windshield. Therefore, the R value is compared with a preset fogging risk threshold R0, which represents the preset minimum R value for possible fogging. The comparison result between R and the preset fogging risk threshold R0 is obtained, and the corresponding dehumidification strategy is implemented based on the comparison result. The vehicle's interior air dehumidification strategies include increasing the air conditioning's external circulation, turning on the air conditioning evaporator to a preset temperature, and maintaining the current state. Different comparison results correspond to different dehumidification strategies.

[0104] Specifically, the obtained R value is compared with the preset fogging risk threshold R0. If the R value is greater than R0, the corresponding dehumidification strategy needs to be executed; otherwise, it indicates that the fogging risk is very low, and the current state is maintained without executing other dehumidification strategies.

[0105] In one possible implementation, multiple fogging risk thresholds are preset, the fogging risk threshold range to which R belongs is determined, and the corresponding dehumidification strategy within the threshold range is executed according to the fogging risk threshold range to which R belongs.

[0106] Optionally, if the R value is greater than R0 and the vehicle window is detected to be open, a reminder message is sent to the vehicle control screen. This reminder message indicates that there is a risk of fogging on the inner surface of the vehicle's windshield, prompting the user to close the window.

[0107] It is understood that the formulas, functions or equations provided in the embodiments of this application are merely illustrative examples of possible formulas, functions or equations. In specific implementations, the formulas, functions or equations can be appropriately modified according to actual calculation needs, and there are no limitations on this.

[0108] The vehicle control method provided in this embodiment obtains the number N of living beings riding in the vehicle and the temperature T of the vehicle's windshield. b The vehicle's air conditioner's internal / external circulation ratio K and air volume M, as well as the humidity level Q of the outside air obtained from the cloud.w Then, according to Q w N, K, and M are used to obtain the humidity Q inside the vehicle. n Then according to T b Obtain the critical humidity level Q of the air inside the vehicle. b Furthermore, according to Q n and Q b The fogging risk value R of the windshield is determined. Finally, R is compared with a preset fogging risk threshold R0, and a corresponding dehumidification strategy is implemented for the vehicle's interior air based on the comparison result. By determining the fogging risk of the windshield and then determining the corresponding dehumidification strategy, dehumidification is performed even when the inner surface of the windshield is not fogged but poses a certain risk, reducing the probability of fogging on the inner surface of the windshield. Furthermore, the dehumidification strategy is executed automatically, eliminating the need for user intervention while driving and improving driving safety. In addition, the fogging risk value R is obtained from parameters acquired from existing vehicle components, eliminating the need for additional equipment.

[0109] Figure 4 This is a flowchart illustrating a second embodiment of a vehicle control method provided in this application. Figure 4 As shown above, in the above Figure 2 Based on the illustrated embodiment, step S105 above may include the following steps:

[0110] S201, Obtain N, T b K, M, and Q w .

[0111] S202, according to Q w N, K, and M, obtain Q n .

[0112] S203, according to T b Get Q b .

[0113] S204, according to Q n and Q b Determine the R of the windshield.

[0114] S205. Compare R with R0.

[0115] In this step, the fogging risk value R of the windshield needs to be compared with the preset fogging risk threshold value R0. R0 represents the preset minimum R value for possible fogging, which can be set to 0.2, 0.3, or 0.4. This application does not impose any restrictions. The comparison result is obtained.

[0116] If the comparison result indicates that R is less than R0, it means that there is no risk of fogging on the windshield, and step S206 is executed. If the comparison result indicates that R is greater than or equal to R0, it means that there is a risk of fogging on the windshield, and step S209 is executed.

[0117] S206. Check if the vehicle is in dehumidification mode.

[0118] If R is less than R0, it means that the windshield of the vehicle will not fog up and the air inside the vehicle does not need to be dehumidified. The system checks whether the vehicle's air conditioning is in dehumidification mode and stops dehumidification or keeps the current non-dehumidification state depending on whether it is in dehumidification mode.

[0119] If the vehicle is not currently in dehumidification mode, it means that the air inside the vehicle is not being dehumidified, and S207 will be executed. If the vehicle is currently in dehumidification mode, it means that the air inside the vehicle is being dehumidified, and S208 will be executed.

[0120] S207. Keep the vehicle dry.

[0121] S208. Stop the dehumidification operation.

[0122] S209, Comparison Q w With Q n The size relationship.

[0123] In this step, if the comparison between R and R0 results in R being greater than or equal to R0, it indicates a risk of fogging on the windshield, requiring a dehumidification strategy to dehumidify the air inside the vehicle. This dehumidification strategy includes increasing the air conditioning's external air circulation and turning on the air conditioning evaporator to a preset temperature. Therefore, by determining the humidity level Q of the outside air, the system can be optimized. w and the humidity of the air inside the vehicle Q n Depending on the size of the object, choose an appropriate dehumidification strategy.

[0124] If the comparison result characterizes Q w Less than Q n Then proceed to step S210. If the comparison result represents Q... w Greater than or equal to Q n Then proceed to step S211.

[0125] S210, Increase the proportion of external air circulation in air conditioners.

[0126] In this step, if Q w Less than Q n This indicates that the humidity level outside the vehicle is lower than that inside the vehicle, meaning the outside air is drier than the inside air. Therefore, dehumidification can be achieved by increasing the external air circulation rate of the air conditioner. The external air circulation rate can be set to 50%, 60%, or 70%, and this application does not impose any restrictions.

[0127] S211. Obtain the target evaporation temperature Te of the air conditioner.

[0128] In this step, if the humidity level outside the vehicle is higher than that inside the vehicle, making the outside air more humid and unable to be dehumidified by increasing the external air circulation, dehumidification is achieved through the evaporator in the air conditioner. Specifically, the evaporator in the air conditioner is turned on and heated to its target temperature Te. The target temperature Te can be a preset fixed value or calculated from the dew point temperature of the air entering the evaporator.

[0129] Optional, if Q w Greater than Q n This indicates that the air inside the vehicle is drier, which can reduce the proportion of external air circulation in the air conditioner.

[0130] In one implementation, step S211 may include, for example, the following steps:

[0131] S2111, Obtain the temperature T inside the vehicle n And, the external temperature T of the vehicle is obtained from the cloud. w .

[0132] In this step, the target evaporation temperature of the evaporator is related to the dew point temperature of the air entering the evaporator, and is generally lower than the dew point temperature. Therefore, obtaining the target evaporation temperature requires determining the dew point temperature at the evaporator inlet. Since the dew point temperature is related to both temperature and moisture content, it is first necessary to determine the temperature and moisture content of the air entering the evaporator to determine the dew point temperature at the evaporator inlet. The temperature T inside the vehicle is then obtained. n and the temperature outside the vehicle T w Used for calculating the temperature and humidity of the air entering the evaporator.

[0133] Specifically, the vehicle's interior temperature is obtained through internal temperature sensors, while the external temperature (T) is obtained from the cloud. w The external temperature (T) of the vehicle is obtained from the cloud. w Compared with obtaining the vehicle's external air humidity Q from the cloud in step S101 w The method is similar and will not be elaborated here.

[0134] S2112, according to T n T w K, M, Q w Q n Obtain the inlet air temperature Tei and inlet air humidity Q of the air conditioner's evaporator. e .

[0135] In this step, based on the obtained T n T w And K, M, Qw Q n , with Tei and Q e Establish a mapping relationship, and solve for Tei and Q based on the mapping relationship. e Expression formula.

[0136] Specifically, the energy conservation of the air entering the evaporator from the internal and external circulation systems establishes the temperature conservation formula (Formula 1) and the moisture content conservation formula (Formula 2):

[0137] (1-K)MT w +KMT n =MTei (1)

[0138] (1-K)MQ w +KMQ n =MQ e (2)

[0139] The evaporator inlet air temperature Tei (Equation 3) and the evaporator inlet air humidity Q can be obtained by transforming the above formula. e (Formula 4) Express the formula:

[0140] Tei=KT n +(1-K)T w (3)

[0141] Q e =KQ n +(1-K)Q w (4)

[0142] Therefore, according to the above formula and T n T w K, M, Q w Q n The inlet air temperature Tei and the inlet air humidity Qe of the evaporator of the air conditioner are calculated.

[0143] S2113, According to Tei and Q e The dew point temperature Ted of the air at the evaporator inlet is obtained.

[0144] In this step, the dew point temperature of the air can be uniquely determined by its temperature and humidity. Therefore, the dew point temperature Ted of the evaporator inlet air can be obtained in various ways based on Tei and Qe, including by consulting a preset enthalpy-humidity chart and by querying the dew point temperature in relation to Tei and Qe. e The correspondence table, or the calculation through a fitting function, yields the functional relationship expression: Ted=F(Tei,Q) e This application does not limit the method by which the dew point temperature of the evaporator inlet air is obtained.

[0145] S2114. Based on Ted, obtain the target evaporation temperature Te of the air conditioner.

[0146] In this step, during evaporator dehumidification, if Te is greater than Ted, the dehumidification effect will be reduced. Therefore, Te must be less than Ted. There are several ways to obtain Te, such as: subtracting a fixed value from Ted; obtaining Te based on the range of R values; obtaining Te by looking up a preset table based on Ted; or establishing a mathematical relationship between Ted and Te to obtain Te.

[0147] It should be noted that the Te temperature is generally not lower than 2.2 degrees Celsius to prevent the evaporator from frosting and freezing.

[0148] In one implementation, Te is obtained based on the range of R values. A larger R indicates higher humidity inside the vehicle, which increases the risk of fogging. In this case, rapid dehumidification is required, and the target evaporation temperature needs to be lower. That is, the larger R is, the lower Te is. Therefore, Te needs to be obtained based on the range of R values.

[0149] Specifically, preset fogging risk thresholds R0, R1, R2, R3, and temperature constants t1, t2, t3 are defined, where R0... <R1<R2<R3,t1<t2<t3。

[0150] If R is greater than or equal to R0 and less than R1, then Te is obtained based on the difference between Ted and t1. For example, the difference between Ted and t1 can be used as Te, or the difference can be multiplied by a preset weight to obtain Te, etc.

[0151] If R is greater than or equal to R1 and less than R2, then Te is obtained based on the difference between Ted and t2. For example, the difference between Ted and t2 can be used as Te, or the difference can be multiplied by a preset weight to obtain Te, etc.

[0152] If R is greater than or equal to R2, then Te is obtained based on the difference between Ted and t3; for example, the difference between Ted and t3 can be used as Te, or the difference can be multiplied by a preset weight to obtain Te, etc.

[0153] Based on the different fogging risk threshold ranges where R falls, the temperature constants for different preset ranges are obtained. The difference between Ted and the temperature constant for each fogging risk threshold range is used to obtain Te. Therefore, the larger the fogging risk value R of the vehicle's interior air, the greater the difference between Ted and Te. Compared to subtracting a fixed value from Ted, the resulting Te is lower, leading to faster dehumidification. This method is more energy-efficient than setting a fixed lower target evaporation temperature, which requires more energy to heat the cooling air and results in energy waste. Determining Te based on the actual parameters of the vehicle's interior air is more energy-efficient.

[0154] S212, Control the air conditioner to dehumidify the air inside the vehicle by first cooling and then heating it to Te.

[0155] In this step, after obtaining the target evaporation temperature Te of the air conditioner, the surface temperature of the air conditioner evaporator is controlled to reach the target evaporation temperature Te. The air inside the vehicle is cooled by the evaporator surface, condenses into water vapor, and then flows into the vehicle interior after being heated, achieving a dehumidification effect.

[0156] S213. Record the duration of this dehumidification process.

[0157] S214. When the duration of dehumidification exceeds the preset calibration time T. i When this happens, stop the dehumidification operation.

[0158] In this step, the preset calibration time T for dehumidification is... i Based on prior experimental results, after dehumidifying water-saturated air for this duration, the risk value R of fogging inside the vehicle is less than R0. Therefore, after this dehumidification period, the dehumidification operation can be stopped, for example, by turning off the air conditioning dehumidification mode or restoring the air conditioning settings to their pre-dehumidification state. The dehumidification method that increases the proportion of external air circulation is calibrated after a preset calibration time T. i After dehumidification, you can choose to stop the dehumidification operation or obtain the fogging risk value R again.

[0159] Optionally, the dehumidification time T is set after the preset calibration period. i Then, the fogging risk value R of the air inside the vehicle is obtained again. If R is still greater than R0, the corresponding dehumidification strategy is executed. When the condition that R is less than R0 is met, the dehumidification operation is stopped.

[0160] It is understood that the formulas, functions or equations provided in the embodiments of this application are merely illustrative examples of possible formulas, functions or equations. In specific implementations, the formulas, functions or equations can be appropriately modified according to actual calculation needs, and there are no limitations on this.

[0161] The vehicle control method provided in this embodiment determines a dehumidification strategy based on the humidity content of the outside air when there is a risk of fogging on the inner surface of the vehicle's windshield (i.e., R is greater than or equal to R0). When the outside air is drier, dehumidification is achieved by increasing the proportion of external air circulation in the air conditioner, which can reduce energy consumption. When the outside air is more humid, dehumidification is achieved by automatically starting the evaporator in the air conditioner and heating it to the target evaporation temperature Te. Furthermore, the target evaporation temperature Te of the evaporator is related to the parameters of the air inside the vehicle, which is more in line with the actual conditions of the vehicle and results in a better dehumidification effect.

[0162] The following describes how the vehicle control method provided in this application obtains the humidity level Q inside the vehicle. n Please provide a detailed explanation.

[0163] Figure 5 This is a flowchart illustrating a third embodiment of a vehicle control method provided in this application. Figure 5 As shown, based on Embodiment 1, step S102 is performed according to Q. w N, K, and M are used to obtain the humidity Q inside the vehicle. n Specifically, this may include the following steps:

[0164] S1021, Obtain Q n With Q w Formula for the mapping relationship of N, K, M.

[0165] In this step, Q is pre-installed in the vehicle. w N, K, M and Q n The equation between these two equations is established through the conservation of energy. Specifically, to determine the humidity content of the air inside the vehicle, the vehicle interior is taken as a reference frame. After the vehicle's air conditioning is turned on, the water vapor in the internal circulation system does not leave the vehicle interior, and the mass of air flowing into the vehicle from the external circulation system is the same as the mass of air flowing out of the external circulation system. Therefore, the change in water vapor content inside the vehicle during time period t is as follows.

[0166] The mass of water vapor flowing into the vehicle includes: the mass of water vapor contained in the air flowing in from the external circulation is t(1-k)MQ. w Water vapor (tQ0) produced by the respiration of living organisms in the vehicle flows into the vehicle interior, where Q0 represents the amount of water vapor entering the vehicle interior per second through the living organisms.

[0167] The mass of water vapor flowing out of the vehicle includes: the mass of water vapor contained in the air flowing out of the external circulation system is t(1-k)MQ. n The water vapor condensed from the evaporator of the air conditioner (tQ) out ), where Q out This indicates the amount of water vapor consumed per second by the evaporator for dehumidification (unit: g / s).

[0168] The following mathematical equation (Formula 5) can be established based on the balance of water vapor flowing into and out of the vehicle:

[0169] (1-K)MQ w +Q0=(1-K)MQ n +Q out (5)

[0170] In the above formula, Q0 = NQ r F r Where Q0 represents the amount of water vapor entering the vehicle per second through a living organism, Q r F represents the amount of water vapor produced by a living organism with each breath.r The frequency of breathing in living organisms, Q out This indicates the amount of water vapor consumed per second by the evaporator for dehumidification.

[0171] The aforementioned life forms include, but are not limited to, humans. Taking humans as an example, the above parameters are explained using F. r The frequency of human breathing, that is, the number of breaths per second, is set as a constant, for example, F. r It can be any value within the range of 0.27 to 0.33. Q r This represents the amount of water vapor produced during one breathing cycle. The amount of water vapor produced by human respiration is strongly correlated with the interior temperature of the vehicle and can be determined through pre-calibration. The calibration results are shown in Table 2.

[0172] Table (2)

[0173] <![CDATA[T n (℃)]]> <![CDATA[T1]]> <![CDATA[T2]]> <![CDATA[T3]]> T... <![CDATA[T N ]]> <![CDATA[Q r (g)]]> <![CDATA[Q r1 ]]> <![CDATA[Q r2 ]]> <![CDATA[Q r3 ]]> <![CDATA[Q r ...]]> <![CDATA[Q rn ]]>

[0174] Equation 5 is transformed to obtain Equation 6, which is Q. n With Q w Formula for the mapping relationship of N, K, M.

[0175] Q n =Q w +(NQ r F r -Q out ) / (1-K)M (6)

[0176] Table 2 and Formula 6 are pre-stored in the vehicle, so that Q can be calculated when needed. n At that time, obtain the mapping relationship formula 6 and Table 2 from the vehicle.

[0177] S1022. Obtain the humidity Q inside the vehicle based on the formula of the mapping relationship. n .

[0178] In this step, the vehicle interior temperature T is first obtained. n Q is determined according to Table 2 based on the vehicle's interior temperature. r Next, check whether the air conditioning evaporator is on or off. If the air conditioning evaporator is off, it means that there is no water vapor in the air inside the vehicle that has been consumed by dehumidification, then Q... out The humidity level Q inside the vehicle can be obtained according to Formula 6 above, which equals 0. n The value.

[0179] If the air conditioner evaporator is in the "on" state, it means that the air inside the vehicle is dehumidified by the evaporator, consuming the water vapor in the air. Therefore, Q... out This is the default value.

[0180] In one implementation, the amount of water vapor consumed per second by the air conditioner for dehumidification is related to the evaporator equipment and evaporation temperature in the air conditioner. The average value of the water vapor consumption parameters for dehumidification in air conditioner evaporators currently available on the market is taken as Q. out The default value.

[0181] In another implementation, the evaporator inlet air temperatures Tei and Q, obtained experimentally, are pre-stored. out The corresponding relationship table. When the air conditioner evaporator is turned on, and Q needs to be calculated... n At that time, the target evaporation temperature Tei of the evaporator is obtained, and Tei is compared with Q. out The correspondence table determines Q out The default value.

[0182] The vehicle control method provided in this embodiment obtains Q. n With Q w The formula for the mapping relationship between N, K, and M is used to obtain the humidity Q of the air inside the vehicle. n The vehicle does not require any additional equipment; it only needs to be calculated based on parameters obtained from the existing components, thus reducing vehicle costs. Furthermore, Q is calculated according to the mapping formula. n The values ​​provided ensure the accuracy of the data.

[0183] The following section provides a detailed explanation of the vehicle control method, using the example of a vehicle user manually activating the air conditioning dehumidification mode.

[0184] Figure 6 This is a flowchart illustrating a fourth embodiment of a vehicle control method provided in this application. Figure 6 As shown, it includes the following steps:

[0185] S301. Detect that the air conditioner dehumidification mode is enabled, and obtain N and T values. b K, M, and Q w .

[0186] S302, according to Q w N, K, and M are used to obtain the humidity Q inside the vehicle. n .

[0187] S303, according to T b Obtain the critical humidity level Q of the air inside the vehicle. b .

[0188] S304, according to Q n and Q b Determine the risk value R for fogging of the windshield.

[0189] S305. Obtain the comparison result between R and the preset fogging risk limit value R0.

[0190] In this solution, even if the user manually turns on the dehumidification mode of the air conditioner, it is still necessary to obtain the risk of fogging in the air inside the vehicle and determine the dehumidification strategy based on the risk of fogging. Therefore, S301-S305 are similar to S101-S105 and will not be described again here.

[0191] If R is greater than or equal to R0, proceed to step S306. If R is less than R0, proceed to step S307.

[0192] S306. Implement the corresponding dehumidification strategy for the air inside the vehicle.

[0193] S307. Send a dehumidification reminder confirmation message to the vehicle control screen.

[0194] In this step, if the obtained R is less than the minimum fogging risk threshold R0 inside the vehicle, it means that dehumidification is not needed at this time. Therefore, the vehicle terminal sends a dehumidification reminder confirmation message to the control screen, reminding the user that dehumidification is not required and requiring the user to confirm whether to activate the dehumidification mode.

[0195] S308. Execute the dehumidification strategy according to the user's dehumidification selection.

[0196] In this step, the vehicle terminal receives the user's selection from the vehicle control screen. If the user selects not to enable dehumidification mode, it means that dehumidification is not needed at present, and the current state is maintained. If the user selects to enable dehumidification mode, it means that the vehicle has fogged up or the user believes there is a high risk of fogging, and the dehumidification strategy of starting the air conditioning evaporator to the target evaporation temperature is executed.

[0197] S309. Adjust the R0 value according to the user's selection.

[0198] In this step, if a user selects to activate the dehumidification mode when R is less than R0, it indicates that the current minimum fogging risk threshold value R0 inside the vehicle does not meet the actual situation of the vehicle, and the R0 value needs to be adjusted. Specifically, R0 is multiplied by a coefficient A, where A is greater than 0 and less than 1. If a user selects not to activate the dehumidification mode when R is less than R0, it indicates that dehumidification is not needed at present, the fogging risk assessment is accurate, and therefore the critical value R0 for the fogging risk of the windshield does not need to be adjusted.

[0199] Optionally, when adjusting the R0 value, all preset fogging risk threshold values ​​are multiplied by a coefficient A for adjustment.

[0200] The vehicle control method provided in this embodiment determines the current fogging risk by acquiring the R value when the user turns on the dehumidification mode. When there is no fogging risk, the user is prompted to turn off the dehumidification mode, which can save vehicle energy. When R is less than R0, the user selects dehumidification, and the fogging risk threshold value R0 is automatically adjusted to realize the self-correction function, which increases the accuracy of preventing fogging of the vehicle's windshield.

[0201] Figure 7 This is a schematic diagram of the structure of a vehicle control device provided in an embodiment of this application. Figure 7 As shown, the device 10 includes: a first acquisition module 11, a second acquisition module 12, a third acquisition module 13, a fogging risk value determination module 14, and an execution module 15. Optionally, the device may also include at least one of the following modules: a dehumidification recording module 16, and a stop module 17.

[0202] The first acquisition module 11 is used to acquire the number N of living beings riding in the vehicle and the temperature T of the vehicle's windshield. b The vehicle's air conditioner's internal / external circulation ratio K and air volume M, and the vehicle's external air humidity Q obtained from the cloud. w ;

[0203] The second acquisition module 12 is used to obtain information based on Q. w N, K, and M are used to obtain the humidity Q of the air inside the vehicle. n ;

[0204] The third acquisition module 13 is used to obtain information based on the T. b Obtain the critical humidity level Q of the air inside the vehicle. b ;

[0205] Fog risk value determination module 14, used to determine the fog risk value based on the Q n and the Q b Determine the fogging risk value R of the windshield, wherein R is positively correlated with the fogging risk;

[0206] The execution module 15 is used to obtain the comparison result between R and the preset fogging risk threshold value R0, and to execute the corresponding dehumidification strategy on the air inside the vehicle according to the comparison result to prevent the windshield from fogging.

[0207] Optionally, the aforementioned execution module 15 is specifically used for:

[0208] If R is less than R0 and the vehicle is not currently dehumidifying the air inside the vehicle, then the vehicle remains in a non-dehumidified state.

[0209] If R is less than R0 and the vehicle is currently dehumidifying the air inside the vehicle, then the dehumidification operation is stopped.

[0210] If R is greater than or equal to R0, and Q w Less than or equal to Q n The air inside the vehicle is dehumidified by increasing the proportion of external air circulation in the air conditioner.

[0211] If R is greater than or equal to R0, and Q w Greater than the stated Q n Then, the target evaporation temperature Te of the air conditioner is obtained, and the air conditioner is controlled to dehumidify the air inside the vehicle by first cooling and then heating to Te.

[0212] Optionally, the execution module 15 described above is also used for:

[0213] Obtain the temperature T inside the vehicle n And, the external temperature T of the vehicle is obtained from the cloud. w ;

[0214] According to the T n The T w The K, the M, the Q w The Q n The inlet air temperature Tei and the inlet air humidity Q of the evaporator of the air conditioner are obtained. e ;

[0215] According to the Tei and the Q e The dew point temperature Ted of the air at the evaporator inlet is obtained.

[0216] Based on the Ted, obtain the Te.

[0217] Optionally, the execution module 15 described above is also used for:

[0218] If R is greater than or equal to R0 and less than R1, then Te is obtained based on the difference between Ted and t1;

[0219] If R is greater than or equal to R1 and less than R2, then Te is obtained based on the difference between Ted and t2;

[0220] If R is greater than or equal to R2, then Te is obtained based on the difference between Ted and t3;

[0221] Among them, R0 <R1<R2<R3,t1<t2<t3。

[0222] Optionally, the dehumidification recording module 16 is used to record the duration of this dehumidification process;

[0223] Optionally, the aforementioned stop module 17 is used to stop when the duration exceeds a preset calibration duration T. i When this happens, stop the dehumidification operation.

[0224] Optionally, the second acquisition module 12 mentioned above is specifically used for:

[0225] According to Q w The humidity Q of the air inside the vehicle is obtained using the following formula, where N, K, and M are used. n :

[0226] Q n =Q w +(Q0-Q out ) / (1-K)M

[0227] Where Q0=NQ r F r Q represents the total amount of water vapor produced per second by a living being riding in the vehicle. r F represents the amount of water vapor produced by a single respiration of a living organism. r Q is the respiratory rate of a living organism. out This indicates the amount of water vapor consumed per second by the evaporator for dehumidification.

[0228] Optionally, the aforementioned fogging risk value determination module 13 is specifically used for:

[0229] If the Q n Greater than or equal to Q b Then the value of R is a preset value;

[0230] If the Q n Less than the Q b Then the value of R is the value of Q. b With the Q n The reciprocal of the difference.

[0231] Figure 8 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application. Figure 8 As shown, the vehicle 800 includes: a vehicle body 801, a control device 802, an air conditioner 803, a temperature sensor 804, a memory 805, and a communication interface 806 for interacting with other devices.

[0232] The control device 802 executes the computer execution instructions stored in the memory 805 to implement the vehicle control method as described in any of the foregoing method embodiments;

[0233] The temperature sensor 804 is installed on the inner surface of the vehicle's windshield and is used to obtain the temperature of the inner surface of the vehicle's windshield.

[0234] Optionally, the vehicle 800 interior space is equipped with multiple temperature sensors to obtain the temperature of the air inside the vehicle.

[0235] Optionally, the vehicle 800 also includes seat sensors, which can be installed under each seat in the vehicle to detect the number of living beings in the vehicle.

[0236] Optionally, the vehicle 800 also includes an interior camera for acquiring images of the vehicle's interior, which can be used to identify the number of living beings in the vehicle.

[0237] Optionally, the various devices mentioned above in the vehicle 800 can be connected via a system bus.

[0238] Optionally, the memory 805 stores the execution instructions of the vehicle control device 802, the formulas and charts described in any of the foregoing method embodiments;

[0239] The memory 805 can be a separate memory unit or a memory unit integrated into the control device 513.

[0240] Optionally, the vehicle can communicate and interact with external devices via communication interface 806. This external device can be a cloud server as described in the previous embodiments, or a USB flash drive, etc.

[0241] Optionally, the vehicle may also include a display for showing the processor's processing results and for human-machine interaction. In some embodiments, the display may be the vehicle's front panel; in other embodiments, the display may be a flexible display screen, or even a non-rectangular, irregularly shaped display screen, i.e., a non-rectangular screen. The display may be made of materials such as liquid crystal display (LCD) or organic light-emitting diode (OLED).

[0242] It should be understood that the control device 802 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this application can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0243] The system bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The system bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus. Memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0244] The vehicle provided in this application embodiment can be used to execute the vehicle control method described in any of the above method embodiments. Its implementation principle and technical effect are similar, and will not be repeated here.

[0245] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the vehicle control method as described in any of the foregoing method embodiments.

[0246] The aforementioned computer-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, electrically erasable programmable read-only memory, erasable programmable read-only memory, programmable read-only memory, read-only memory, 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.

[0247] All or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, it performs the steps of the above method embodiments; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid-state drive, magnetic tape, floppy disk, optical disk, and any combination thereof.

[0248] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one control device of the vehicle 800 can read the computer program from the computer-readable storage medium. When the at least one control device executes the computer program, it can implement the vehicle control method provided in any of the foregoing embodiments.

[0249] This application also provides a chip on which a computer program is stored. When the computer program is executed by the chip, it implements the vehicle control method provided in any of the foregoing embodiments.

[0250] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0251] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A vehicle control method, characterized in that, The method includes: Obtain the number N of living beings riding in the vehicle, and the temperature T of the vehicle's windshield. b The vehicle's air conditioner's internal / external circulation ratio K and air volume M, and the vehicle's external air humidity Q obtained from the cloud. w ; According to the humidity Q of the external air of the vehicle w The number of living beings N in the vehicle, the internal / external circulation ratio K of the vehicle's air conditioner, and the air volume M are used to obtain the humidity Q of the air inside the vehicle. n ; Based on the windshield temperature T of the vehicle b Obtain the critical humidity level Q of the air inside the vehicle. b ; According to the humidity level Q inside the vehicle n And the critical humidity level Q of the air inside the vehicle b Determine the fogging risk value R of the windshield, wherein the fogging risk value R of the windshield is positively correlated with the fogging risk; The comparison result of the fogging risk value R of the windshield and the preset fogging risk threshold value R0 is obtained, and the corresponding dehumidification strategy is executed on the air inside the vehicle according to the comparison result to prevent the windshield from fogging. The moisture content Q of the external air of the vehicle is used as a reference. w The number of living organisms N, the internal / external circulation ratio K of the vehicle's air conditioner, and the airflow M are used to obtain the humidity Q of the air inside the vehicle. n ,include: According to the humidity Q of the external air of the vehicle w The number of living organisms N, the internal / external circulation ratio K of the vehicle's air conditioner, and the air volume M are used to obtain the humidity Q of the air inside the vehicle using the following formula. n : in, Q represents the total amount of water vapor produced per second by a living being riding in the vehicle. r F represents the amount of water vapor produced by a single respiration of a living organism. r Q is the respiratory rate of a living organism. out This indicates the amount of water vapor consumed per second by the evaporator for dehumidification. The step of implementing a corresponding dehumidification strategy for the vehicle interior air based on the comparison result includes: If the fogging risk value R of the windshield is less than the fogging risk threshold value R0, and the vehicle is not currently dehumidifying the air inside the vehicle, then the vehicle remains in a non-dehumidified state. If the fogging risk value R of the windshield is less than the fogging risk threshold value R0, and the vehicle is currently dehumidifying the air inside the vehicle, then the dehumidification operation will be stopped. If the fogging risk value R of the windshield is greater than or equal to the fogging risk threshold value R0, and the humidity Q of the outside air of the vehicle is... w Less than or equal to the humidity content Q of the air inside the vehicle n The air inside the vehicle is dehumidified by increasing the proportion of external air circulation in the air conditioner. If the fogging risk value R of the windshield is greater than or equal to the fogging risk threshold value R0, and the humidity Q of the outside air of the vehicle is... w Greater than the humidity Q of the air inside the vehicle n Then, the target evaporation temperature Te of the air conditioner is obtained, and the air conditioner is controlled to dehumidify the air inside the vehicle by first cooling and then heating to the target evaporation temperature Te.

2. The method according to claim 1, characterized in that, The step of obtaining the target evaporation temperature Te of the air conditioner includes: Obtain the temperature T inside the vehicle n And, the external temperature T of the vehicle is obtained from the cloud. w ; According to the temperature T inside the vehicle n The external temperature T of the vehicle w The vehicle's air conditioner's internal / external circulation ratio K, the air output volume M, and the humidity content Q of the outside air in the vehicle. w The humidity Q of the air inside the vehicle n The inlet air temperature Tei and the inlet air humidity Q of the evaporator of the air conditioner are obtained. e ; Based on the inlet air temperature Tei and the inlet air humidity Q of the air conditioner's evaporator. e The dew point temperature Ted of the air at the evaporator inlet is obtained. The target evaporation temperature Te of the air conditioner is obtained based on the dew point temperature Ted of the air entering the evaporator.

3. The method according to claim 2, characterized in that, The step of obtaining the target evaporation temperature Te of the air conditioner based on the dew point temperature Ted of the evaporator inlet air includes: If the fogging risk value R of the windshield is greater than or equal to the fogging risk threshold value R0 and less than R1, then the target evaporation temperature Te of the air conditioner is obtained based on the difference between the dew point temperature Ted and t1 of the evaporator inlet air. If the fogging risk value R of the windshield is greater than or equal to R1 and less than R2, then the target evaporation temperature Te of the air conditioner is obtained based on the difference between the dew point temperature Ted and t2 of the evaporator inlet air. If the fogging risk value R of the windshield is greater than or equal to R2, then the target evaporation temperature Te of the air conditioner is obtained based on the difference between the dew point temperature Ted and t3 of the evaporator inlet air. Among them, R0 <R1<R2<R3,t1<t2<t3。 4. The method according to any one of claims 1-3, characterized in that, If the dehumidification strategy is any strategy for dehumidifying the air inside the vehicle, the method further includes: Record the duration of this dehumidification process; When the duration is greater than the preset calibration duration T i When this happens, stop the dehumidification operation.

5. The method according to any one of claims 1-3, characterized in that, The moisture content Q inside the vehicle n And the critical humidity level Q of the air inside the vehicle b Determining the fogging risk value R of the windshield includes: If the humidity level of the air inside the vehicle is Q n Greater than or equal to the critical humidity level Q of the air inside the vehicle b If the fogging risk value R of the windshield is a preset value, then the risk value R of the windshield is a preset value. If the humidity level of the air inside the vehicle is Q n Less than the critical humidity level Q of the air inside the vehicle b The fogging risk value R of the windshield is the critical humidity level Q of the air inside the vehicle. b The humidity Q of the air inside the vehicle n The reciprocal of the difference.

6. A vehicle control device, characterized in that, The device includes: The first acquisition module is used to acquire the number N of living beings in the vehicle and the windshield temperature T of the vehicle. b The vehicle's air conditioner's internal / external circulation ratio K and air volume M, and the vehicle's external air humidity Q obtained from the cloud. w ; The second acquisition module is used to obtain the humidity Q of the external air of the vehicle. w The number of living beings N in the vehicle, the internal / external circulation ratio K of the vehicle's air conditioner, and the air volume M are used to obtain the humidity Q of the air inside the vehicle. n ; The third acquisition module is used to obtain information based on the windshield temperature T of the vehicle. b Obtain the critical humidity level Q of the air inside the vehicle. b ; The fogging risk value determination module is used to determine the fogging risk value based on the humidity Q of the air inside the vehicle. n And the critical humidity level Q of the air inside the vehicle b Determine the fogging risk value R of the windshield, wherein the fogging risk value R of the windshield is positively correlated with the fogging risk; The execution module is used to obtain the comparison result of the fogging risk value R of the windshield and the preset fogging risk threshold value R0, and to execute the corresponding dehumidification strategy on the air inside the vehicle according to the comparison result to prevent the windshield from fogging. The second acquisition module is specifically used to obtain the humidity Q of the external air of the vehicle. w The number of living beings N in the vehicle, the internal / external circulation ratio K of the vehicle's air conditioner, and the air volume M are used to obtain the humidity Q inside the vehicle using the following formula. n : in, Q represents the total amount of water vapor produced per second by a living being riding in the vehicle. r F represents the amount of water vapor produced by a single respiration of a living organism. r Q is the respiratory rate of a living organism. out This indicates the amount of water vapor consumed per second by the evaporator for dehumidification. The execution module is specifically configured to: if the fogging risk value R of the windshield is less than the fogging risk threshold R0 and the vehicle is not currently dehumidifying the interior air, then maintain the vehicle in a non-dehumidifying state; if the fogging risk value R of the windshield is less than the fogging risk threshold R0 and the vehicle is currently dehumidifying the interior air, then stop the dehumidification operation; if the fogging risk value R of the windshield is greater than or equal to the fogging risk threshold R0 and the humidity Q of the outside air is... w Less than or equal to the humidity content Q of the air inside the vehicle n The air inside the vehicle is dehumidified by increasing the proportion of external air circulation in the air conditioner; if the fogging risk value R of the windshield is greater than or equal to the fogging risk threshold value R0, and the humidity Q of the outside air is... w Greater than the humidity Q of the air inside the vehicle n Then, the target evaporation temperature Te of the air conditioner is obtained, and the air conditioner is controlled to dehumidify the air inside the vehicle by first cooling and then heating to the target evaporation temperature Te.

7. A vehicle, characterized in that, include: The vehicle body, control unit, air conditioner, temperature sensor, and communication interface for interacting with other devices; The control device is used to perform the vehicle control method as described in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the vehicle control method as described in any one of claims 1-5.

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