CN117549858A - Vehicle defogging method and device and vehicle - Google Patents

Abstract

The application provides a vehicle defogging method and device and a vehicle, wherein the method is applied to the field of vehicles and comprises the following steps: if the vehicle is detected to be in a running state, determining whether a windshield in the vehicle has a defogging requirement or not; if the windshield has the defogging requirement, acquiring a target area in the windshield, wherein the target area is used for representing an area in the windshield, in which a driver observes driving road condition information; and controlling a target defogging device in the vehicle to be started so as to remove fog on the target area. Based on the scheme, the target demisting device is controlled to remove fog in a target area, so that the visual field of a driver in the driving process is clearer, and the driving safety of a vehicle is ensured.

Description

Vehicle defogging method and device and vehicle

Technical Field

The present application relates to the field of vehicles, and more particularly, to a method and apparatus for defogging a vehicle in the field of vehicles, and a vehicle.

Background

With the development of the automobile industry, automobiles are increasingly involved in our lives. During the running of the vehicle, the occurrence of fog may cause the blocking of the driver's sight, thereby causing potential safety hazards during the driving. Therefore, how to remove the mist in the windshield and ensure the driving safety of the vehicle is a problem that is currently in need of solving.

Disclosure of Invention

The application provides a vehicle defogging method and device and a vehicle, wherein when a windshield of the vehicle has defogging requirements, the method can obtain a target area of an area where a driver in the windshield observes driving road condition information, and the target defogging device in the vehicle is started to remove fog in the target area so as to ensure driving safety of the vehicle.

In a first aspect, there is provided a method of defogging a vehicle, the method comprising:

if the vehicle is detected to be in a running state, determining whether a windshield in the vehicle has a defogging requirement or not;

if the windshield has the defogging requirement, acquiring a target area in the windshield, wherein the target area is used for representing an area in the windshield, in which a driver observes driving road condition information;

and controlling a target defogging device in the vehicle to be started so as to remove fog on the target area.

In an embodiment of the present application, in the event that a vehicle is detected to be in a driving state, determining whether a windshield in the vehicle has a defogging requirement; acquiring an area where a driver observes driving road condition information under the condition that whether a windshield in a vehicle has defogging requirements or not is determined; controlling the target defogging device to be started to remove fog on a target area; under the condition that the vehicle is required to be defogged, a target area of the windshield is obtained, and because the target area is an area of driving road condition information observed by a driver, the target area is defogged by controlling the target defogging device, so that the visual field of the driver in the driving process is clearer, and the driving safety of the vehicle is ensured.

With reference to the first aspect, in some possible implementations, the method further includes:

acquiring the current speed of the vehicle;

and determining the target defogging device according to the current vehicle speed.

In the embodiment of the application, the speed of the vehicle in the driving process of the vehicle is obtained; determining a target defogging device according to the speed of the vehicle; the target defogging device is related to the vehicle speed, so that the intellectualization of determining the target defogging device is improved.

With reference to the first aspect, in some possible implementations, the determining the target defogging device according to the current vehicle speed includes:

if the current vehicle speed is greater than a preset vehicle speed threshold, determining that the target defogging device is an air conditioner and a windscreen wiper in the vehicle;

and if the current vehicle speed is smaller than or equal to a preset vehicle speed threshold value, determining that the target defogging device is an air conditioner in the vehicle.

In the embodiment of the application, comparing the current speed of the vehicle with a preset speed threshold, and determining that the target defogging device is an air conditioner and a windscreen wiper in the vehicle under the condition that the current speed is larger than the preset speed threshold; under the condition that the current vehicle speed is smaller than a preset vehicle speed threshold value, determining that the target defogging device is an air conditioner in the vehicle; under the condition that the current vehicle speed is greater than a preset vehicle speed threshold value, the target defogging device is determined to be an air conditioner and a windscreen wiper, so that the defogging efficiency of the vehicle is improved, and the driving safety of the vehicle at a high-speed running speed is improved; under the condition that the current vehicle speed is smaller than a preset vehicle speed threshold value, the target defogging device is determined to be an air conditioner, and compared with the condition that the air conditioner and the windscreen wiper are started to remove fog in a target area, the energy consumption of the vehicle can be saved to a certain extent.

With reference to the first aspect, in some possible implementations, the method further includes:

and determining the working frequency of the windscreen wiper according to the current vehicle speed.

In the embodiment of the application, the working frequency of the windscreen wiper is determined according to the current vehicle speed; so that the control of the demisting device is more intelligent.

With reference to the first aspect, in some possible implementations, if it is detected that the vehicle is in a driving state, determining whether a windshield in the vehicle has a defogging requirement includes:

if the vehicle is detected to be in the running state, acquiring the vehicle exterior temperature of the vehicle, the vehicle interior temperature of the vehicle and the vehicle exterior humidity of the vehicle;

determining a condensation value outside the vehicle according to the temperature outside the vehicle, the temperature inside the vehicle and the humidity outside the vehicle;

and if the condensation value outside the vehicle is larger than a preset condensation value, determining that the defogging requirement exists on the outer side of the windshield.

In the embodiment of the application, the condensation value is obtained according to the obtained vehicle exterior temperature, the obtained vehicle interior temperature and the obtained vehicle exterior humidity; if the condensation value is greater than or equal to a preset condensation threshold value, determining that the vehicle has the defogging requirement; in this scheme, whether confirm that there is defogging demand in the outside of windshield through comparing condensation value with predetermineeing condensation threshold value, because condensation value is according to difference in temperature and humidity calculation, consequently whether the result of defogging demand exists according to the condensation value is more accurate.

With reference to the first aspect, in some possible implementations, if it is detected that the vehicle is in a driving state, determining whether a windshield in the vehicle has a defogging requirement includes:

if the vehicle is detected to be in the running state, acquiring the temperature outside the vehicle, the temperature inside the vehicle and the humidity inside the vehicle;

determining a condensation value in the vehicle according to the temperature outside the vehicle, the temperature in the vehicle and the humidity in the vehicle;

if the condensation value in the vehicle is larger than a preset condensation value, determining that the inner side of the windshield has the defogging requirement; or,

if the vehicle is detected to be in the running state, acquiring the temperature outside the vehicle and the number of users in the vehicle;

and if the temperature outside the vehicle is smaller than a preset temperature threshold value and the number of users is larger than a preset user threshold value, determining that the inner side of the windshield has the defogging requirement.

In an embodiment of the present application, the condensation value in the vehicle is determined by the vehicle exterior temperature of the vehicle, the vehicle interior temperature of the vehicle, and the vehicle interior humidity of the vehicle; under the condition that the condensation value in the vehicle is larger than a preset condensation value, the inner side of the windshield is considered to have defogging requirements; or in the running process of the vehicle, determining that the inner side of the windshield has defogging requirements under the conditions that the temperature outside the vehicle is smaller than a preset temperature threshold value and the number of users is larger than a preset user threshold value; because the condensation value is calculated according to the temperature difference and the humidity, the result of determining whether the defogging requirement exists according to the condensation value is more accurate, and whether the defogging requirement exists on the inner side of the windshield is intelligently identified through the user data in the vehicle and the temperature outside the vehicle, so that the intelligent degree of the defogging function is improved.

With reference to the first aspect, in some possible implementations, if the windshield has the defogging requirement, acquiring the target region in the windshield includes:

if the windshield has the defogging requirement, acquiring an image of the driver in a cockpit;

determining a line-of-sight area of the driver in the windshield from the image of the driver;

and acquiring the target area according to the sight line area.

In the embodiment of the application, under the condition that the windshield has defogging requirements, an image of a driver is acquired, and a sight area of the driver is determined according to the image of the driver; determining a target area according to the sight line area of the driver; by determining different target areas according to different drivers, the obtained target areas are more accurate.

With reference to the first aspect, in some possible implementations, the method further includes:

and if the windshield is detected not to have the defogging requirement, controlling the target defogging device to be closed.

In the embodiment of the application, under the condition that the windshield does not have defogging requirements, the control target defogging device is closed, resources are saved in the defogging process, and the control target defogging device is closed through judging conditions, so that the intellectualization of removing the fog on the inner side of the windshield in the vehicle is realized.

In a second aspect, there is provided a vehicle defogging device comprising:

the determining module is used for determining whether a windshield in the vehicle has defogging requirements or not if the vehicle is detected to be in a running state;

the acquiring module is used for acquiring a target area in the windshield if the windshield has the defogging requirement, wherein the target area is used for representing an area in the windshield, in which a driver observes driving road condition information;

and the control module is used for controlling the target defogging device to be started so as to remove fog on the target area.

With reference to the second aspect, in certain implementations of the second aspect, the determining module is further configured to:

acquiring the current speed of the vehicle;

and determining the target defogging device according to the current vehicle speed.

With reference to the second aspect, in certain implementations of the second aspect, the determining module is specifically configured to:

if the current vehicle speed is greater than a preset vehicle speed threshold, determining that the target defogging device is an air conditioner and a windscreen wiper in the vehicle;

and if the current vehicle speed is smaller than or equal to a preset vehicle speed threshold value, determining that the target defogging device is an air conditioner in the vehicle.

With reference to the second aspect, in certain implementations of the second aspect, the determining module is further configured to:

and determining the working frequency of the windscreen wiper according to the current vehicle speed.

With reference to the second aspect, in certain implementations of the second aspect, the determining module is specifically configured to:

if the vehicle is detected to be in the running state, acquiring the vehicle exterior temperature of the vehicle, the vehicle interior temperature of the vehicle and the vehicle exterior humidity of the vehicle;

determining a condensation value outside the vehicle according to the temperature outside the vehicle, the temperature inside the vehicle and the humidity outside the vehicle;

and if the condensation value outside the vehicle is larger than a preset condensation value, determining that the defogging requirement exists on the outer side of the windshield.

With reference to the second aspect, in certain implementations of the second aspect, the determining module is specifically configured to:

if the vehicle is detected to be in the running state, acquiring the temperature outside the vehicle, the temperature inside the vehicle and the humidity inside the vehicle;

determining a condensation value in the vehicle according to the temperature outside the vehicle, the temperature in the vehicle and the humidity in the vehicle;

if the condensation value in the vehicle is larger than a preset condensation value, determining that the inner side of the windshield has the defogging requirement; or,

If the vehicle is detected to be in the running state, acquiring the temperature outside the vehicle and the number of users in the vehicle;

and if the temperature outside the vehicle is smaller than a preset temperature threshold value and the number of users is larger than a preset user threshold value, determining that the inner side of the windshield has the defogging requirement.

With reference to the second aspect, in certain implementations of the second aspect, the acquiring module is specifically configured to:

if the windshield has the defogging requirement, acquiring an image of the driver in a cockpit;

determining a line-of-sight area of the driver in the windshield from the image of the driver;

and acquiring the target area according to the sight line area.

With reference to the second aspect, in certain implementations of the second aspect, the control module is further configured to:

and if the windshield is detected not to have the defogging requirement, controlling the target defogging device to be closed.

In a third aspect, a vehicle is provided that includes a memory and a processor; the memory is for storing executable program code and the processor is for calling and running the executable program code from the memory such that the vehicle performs the method of the first aspect or any of the possible implementations of the first aspect.

In a fourth aspect, there is provided a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of the first aspect or any one of the possible implementations of the first aspect.

In a fifth aspect, a computer readable storage medium is provided, the computer readable storage medium storing computer program code which, when run on a computer, causes the computer to perform the method of the first aspect or any one of the possible implementations of the first aspect.

Drawings

FIG. 1 is a schematic view of a vehicle defogging method according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a system architecture of a vehicle provided in an embodiment of the present application;

FIG. 3 is a schematic flow chart of a method of defogging a vehicle provided in an embodiment of the present application;

FIG. 4 is a schematic flow chart of another method of defogging a vehicle provided by an embodiment of the present application;

FIG. 5 is a schematic view of a vehicle defogging device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

Detailed Description

The technical solutions in the present application will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B: the text "and/or" is merely an association relation describing the associated object, and indicates that three relations may exist, for example, a and/or B may indicate: the three cases where a exists alone, a and B exist together, and B exists alone, and in addition, in the description of the embodiments of the present application, "plural" means two or more than two.

The terms "first," "second," and the like, are used below for descriptive purposes only and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

Fig. 1 is a schematic view of a vehicle defogging scenario provided in an embodiment of the present application.

Illustratively, as shown in FIG. 1, a vehicle 100 includes a windshield 110 and a plurality of windows; for example, the plurality of windows includes: window 120, window 130, window 140, and window 150; the area 160 refers to an area in the windshield where the driver observes driving road condition information, i.e., a "target area" in the embodiment of the present application. If the vehicle 100 is traveling, because there is a temperature difference between the interior and the exterior of the vehicle 100 and there is humidity in the interior of the vehicle, condensation may occur in the windshield 110, the windows 120, 130, 140 and 150 of the vehicle 100, which affects the experience of the driver and the passengers.

It should be appreciated that the vehicle 100 in fig. 1 may be a 5-seat vehicle, an 8-seat vehicle, etc., and the number of seats in the vehicle 100 is not limited in any way in the embodiments of the present application.

In order to solve the problems, the application provides a vehicle defogging method, which can remove fog in a target area by controlling a target defogging device, so that the visual field of a driver in the driving process is clearer, and the driving safety of the vehicle is ensured.

Fig. 2 is a schematic diagram of a system architecture of a vehicle according to an embodiment of the present application.

Illustratively, as shown in FIG. 2, the vehicle 100 includes a sensor 200, a steering camera 210, a vehicle control system 190, and a target defogging device 180; wherein the sensor 200 comprises a temperature sensor 2001 and a humidity sensor 2002; the target defogging device 180 includes an air conditioner 1801, a window 1802, and a wiper 1803. The sensor 200 and the driving camera 210 are both connected to the vehicle control system 190, and the sensor 200 is used for transmitting information of the temperature inside the vehicle, the temperature outside the vehicle, the humidity inside the vehicle and the humidity outside the vehicle to the vehicle control system 190. The target defogging device 180 is connected to the vehicle control system 190, and the target defogging device 180 is configured to receive an activation command of the target defogging device of the vehicle control system 190.

The following describes in detail a method for demisting a vehicle according to an embodiment of the present application with reference to fig. 3 and 4, taking the system architecture shown in fig. 2 as an example.

FIG. 3 is a schematic flow chart of a method for defogging a vehicle provided in an embodiment of the present application.

By way of example, the method 200 shown in FIG. 3 may be performed by the vehicle 100 shown in FIG. 1; or by the vehicle controller in the vehicle 100 shown in fig. 1; or by a processor or chip in the vehicle 100 shown in fig. 1; alternatively, it may be executed by the vehicle control system 190 shown in fig. 2.

S210, if the vehicle is detected to be in a running state, determining whether a windshield in the vehicle has defogging requirements.

By way of example, the driving state refers to a speed of the vehicle other than 0, for example, a speed of the vehicle of 70km/h.

By way of example, defogging requirements refer to the presence of defogging in a vehicle when there is fog in the interior or exterior of the vehicle, wherein the interior of the vehicle includes the interior side of the vehicle window and the interior side of the front and rear windshields of the vehicle, and the exterior of the vehicle includes the exterior side of the vehicle window and the exterior side of the front and rear windshields of the vehicle.

Optionally, in an embodiment of the present application, the vehicle having defogging requirements includes a front windshield of the vehicle having defogging requirements, or a rear windshield of the vehicle having defogging requirements, or a window of the vehicle having defogging requirements, or the like.

In one implementation, if a vehicle is detected in a driving state, determining whether a windshield in the vehicle has a defogging demand includes:

if the vehicle is detected to be in a running state, acquiring the temperature outside the vehicle, the temperature inside the vehicle and the humidity outside the vehicle;

determining a condensation value outside the vehicle according to the temperature outside the vehicle, the temperature inside the vehicle and the humidity outside the vehicle;

if the condensation value outside the automobile is larger than the preset condensation value, determining that the outer side of the windshield has defogging requirements.

The vehicle temperature sensor acquires the temperature in the vehicle and the temperature outside the vehicle, the vehicle humidity sensor acquires the humidity outside the vehicle, the acquired data of the temperature outside the vehicle, the temperature inside the vehicle and the humidity outside the vehicle are sent to a domain controller of the vehicle, the domain controller of the vehicle calculates a condensation value, and the condensation value is compared with a preset condensation threshold value to determine whether the vehicle has defogging requirements. The preset condensation threshold value refers to the maximum value of the set condensation value, and if the condensation value exceeds the preset condensation threshold value, the vehicle is considered to have the possibility of fog; if the condensation value does not exceed the preset condensation threshold, the vehicle is considered to have no possibility of fog.

For example, a temperature sensor in the vehicle acquires the temperature inside the vehicle and the temperature outside the vehicle in real time, and a humidity sensor in the vehicle acquires the humidity outside the vehicle in real time; a control system (e.g., a controller) in the vehicle obtains a condensation value according to the temperature inside the vehicle, the temperature outside the vehicle and the humidity outside the vehicle, compares the condensation value with a preset condensation threshold, and determines that the vehicle has a defogging requirement if the condensation value is greater than or equal to the preset condensation value.

In the embodiment of the application, the condensation value is obtained according to the obtained vehicle exterior temperature, the obtained vehicle interior temperature and the obtained vehicle exterior humidity; if the condensation value is greater than or equal to a preset condensation threshold value, determining that the vehicle has the defogging requirement; in this scheme, whether confirm that there is defogging demand in the outside of windshield through comparing condensation value with predetermineeing condensation threshold value, because condensation value is according to difference in temperature and humidity calculation, consequently whether the result of defogging demand exists according to the condensation value is more accurate.

In one implementation, if a vehicle is detected in a driving state, determining whether a windshield in the vehicle has a defogging demand includes:

if the vehicle is detected to be in a running state, acquiring the temperature outside the vehicle, the temperature in the vehicle and the humidity in the vehicle;

determining a condensation value in the vehicle according to the temperature outside the vehicle, the temperature in the vehicle and the humidity in the vehicle;

if the condensation value in the vehicle is larger than the preset condensation value, determining that the inner side of the windshield has a defogging requirement; or,

if the vehicle is detected to be in a running state, acquiring the temperature outside the vehicle and the number of users in the vehicle;

If the temperature outside the vehicle is less than the preset temperature threshold value and the number of users is greater than the preset user threshold value, determining that the inner side of the windshield has a defogging requirement.

By detecting the number of users of the vehicle and comparing the number of users with a preset threshold value respectively, and comparing the temperature outside the vehicle with the preset temperature threshold value, the vehicle is determined to have defogging requirements under the condition that the number of users is larger than the preset threshold value and the temperature outside the vehicle is smaller than the preset temperature threshold value; wherein the number of users in the vehicle refers to the number of people riding the vehicle under the current condition; for example, the number of users is 3. The preset threshold value refers to a preset maximum value of the number of people riding the vehicle; for example, the preset threshold is 5. The preset temperature threshold refers to a threshold of a pre-configured temperature; for example, the preset temperature threshold is 10 ℃.

By comparing the number of users to a preset threshold and comparing the off-board temperature to a preset temperature threshold, the following may be possible: the number of users is smaller than a preset threshold value, and the temperature outside the vehicle is smaller than a preset temperature threshold value; the number of users is smaller than a preset threshold, and the temperature outside the vehicle is larger than the preset temperature threshold; the number of users is larger than a preset threshold, and the temperature outside the vehicle is smaller than the preset temperature threshold; the number of users is larger than a preset threshold value, the temperature outside the vehicle is larger than a preset temperature threshold value, and the vehicle is considered to have defogging requirements under the condition that the number of users is detected to be larger than the preset threshold value and the temperature outside the vehicle is detected to be smaller than the preset temperature threshold value.

In an embodiment of the present application, the condensation value in the vehicle is determined by the vehicle exterior temperature of the vehicle, the vehicle interior temperature of the vehicle, and the vehicle interior humidity of the vehicle; under the condition that the condensation value in the vehicle is larger than a preset condensation value, the inner side of the windshield is considered to have defogging requirements; or in the running process of the vehicle, determining that the inner side of the windshield has defogging requirements under the conditions that the temperature outside the vehicle is smaller than a preset temperature threshold value and the number of users is larger than a preset user threshold value; because the condensation value is calculated according to the temperature difference and the humidity, the result of determining whether the defogging requirement exists according to the condensation value is more accurate, and whether the defogging requirement exists on the inner side of the windshield is intelligently identified through the user data in the vehicle and the temperature outside the vehicle, so that the intelligent degree of the defogging function is improved.

S220, if the windshield has the defogging requirement, acquiring a target area in the windshield, wherein the target area is used for representing an area in the windshield, in which a driver observes driving road condition information.

For example, taking fig. 1 as an example, during traveling of the vehicle 100, the region indicated by the region 160 is a target region.

In one implementation, if the windshield has a defogging demand, acquiring a target region in the windshield comprises:

If the windshield has defogging requirements, acquiring an image of a driver in the cockpit;

determining a line-of-sight area of the driver in the windshield from the image of the driver;

and acquiring a target area according to the sight line area.

The image of the driver refers to an image of the head of the driver acquired by the driving camera, wherein the image of the driver can be a half-body image or a whole-body image.

By way of example, a line-of-sight region refers to a region that is viewable by a driver through a windshield.

In the embodiment of the application, under the condition that the windshield has defogging requirements, an image of a driver is acquired, and a sight area of the driver is determined according to the image of the driver; determining a target area according to the sight line area of the driver; by determining different target areas according to different drivers, the obtained target areas are more accurate.

In another implementation, the target area is a preconfigured area of the windshield corresponding to the driver's seat, i.e., different driver's seat positions correspond to different windshields.

And S230, controlling a target defogging device in the vehicle to be started so as to remove fog on a target area.

For example, before the target defogging device is controlled to be turned on, the state of the target defogging device needs to be detected; for example, when it is determined that the target defogging device is an air conditioner, it is necessary to detect whether the state of the air conditioner is a normal operation state, and when it is determined that the state of the air conditioner is a normal operation state, the air conditioner is turned on.

In the embodiment of the application, the target demisting device is started to remove mist on the target area.

In one implementation, the method further comprises:

acquiring the current speed of the vehicle;

and determining the target defogging device according to the current vehicle speed.

By way of example, the current speed of the vehicle refers to the current travel speed of the vehicle, for example, a current speed of 50km/h. The target defogging device includes an air conditioner in a vehicle and a wiper blade. For example, defogging may be performed by adjusting the air volume, air speed, or temperature of an air conditioner in a vehicle, or by controlling the operating frequency of a wiper blade in a vehicle.

In the embodiment of the application, the speed of the vehicle in the driving process of the vehicle is obtained; determining a target defogging device according to the speed of the vehicle; the target defogging device is related to the vehicle speed, so that the intellectualization of determining the target defogging device is improved.

In one implementation, determining a target defogging device based on a current vehicle speed includes:

if the current vehicle speed is greater than a preset vehicle speed threshold value, determining that the target defogging device is an air conditioner and a windscreen wiper in the vehicle;

and if the current vehicle speed is smaller than or equal to a preset vehicle speed threshold value, determining that the target defogging device is an air conditioner in the vehicle.

The preset vehicle speed threshold is, for example, a maximum value of a preconfigured vehicle running speed, for example, 60km/h. Comparing the current speed of the vehicle with a preset speed threshold, the following judgment result may exist: the current vehicle speed is greater than a preset vehicle speed threshold, the current vehicle speed is equal to the preset vehicle speed threshold, and the current vehicle speed is less than the preset vehicle speed threshold.

In the embodiment of the application, comparing the current speed of the vehicle with a preset speed threshold, and determining that the target defogging device is an air conditioner and a windscreen wiper in the vehicle under the condition that the current speed is greater than the preset speed threshold; under the condition that the current vehicle speed is smaller than a preset vehicle speed threshold value, determining that the target defogging device is an air conditioner in the vehicle; under the condition that the current vehicle speed is greater than a preset vehicle speed threshold value, the target defogging device is determined to be an air conditioner and a windscreen wiper, so that the defogging efficiency of the vehicle is improved, and the driving safety of the vehicle at a high-speed running speed is improved; under the condition that the current vehicle speed is smaller than a preset vehicle speed threshold value, the target defogging device is determined to be an air conditioner, and compared with the condition that the air conditioner and the windscreen wiper are started to remove fog in a target area, the energy consumption of the vehicle can be saved to a certain extent.

Example 1: the target defogging device comprises an air conditioner.

For example, in the case that there is a defogging demand on the inner side of the windshield, the inner side fog of the vehicle can also be removed by controlling the temperature and/or the air outlet direction of the air conditioner and opening the windows.

The air outlet of the air conditioner refers to the air outlet of the air conditioner; for example, the air output of an air conditioner includes: 1-gear air output (for example, a small amount of air output), 2-gear air output (for example, a medium amount of air output), 3-gear air output (for example, a large amount of air output), and the like; the temperature of the air conditioner includes: a 1 st gear outlet temperature (e.g., lower temperature), a 2 nd gear temperature (e.g., medium temperature), a 3 rd gear temperature (e.g., higher temperature), etc.; the air outlet quantity and the temperature of the air conditioner can be arranged and combined by independently controlling the air outlet quantity or the temperature of the air conditioner, so that the demisting effect is realized; for example, the air outlet amount of the air conditioner is controlled to be large, the temperature of the air conditioner is controlled to be low, and the like.

Illustratively, the air conditioner in the vehicle is controlled to be turned on, and the wind direction mode of the air conditioner is controlled to be directed toward the direction in which the windshield is located, so that mist on the inside of the windshield in the vehicle is removed.

Exemplary wind direction modes of an air conditioner in a vehicle include a mode of blowing toward a user's face, a mode of blowing toward a windshield, a mode of blowing toward a user's foot, and the like; in addition, the air outlet mode of the air conditioner can be controlled by a knob or a soft switch; if a defogging demand is detected on the windshield, the wind direction mode of the air conditioner in the vehicle may be controlled to be a mode of blowing toward the windshield.

By way of example, the defogging effect can also be achieved by adding an air outlet on the outer side surface of the front windshield of the vehicle, or by connecting the air outlet of the heat dissipating device in the vehicle with the outer side of the windshield, so that the air blown out by the heat dissipating device can be blown directly to the outer side of the windshield.

Example 2: the target defogging device comprises a wiper.

In one implementation, the method further comprises:

and determining the working frequency of the windscreen wiper according to the current vehicle speed.

By way of example, the operating frequency of the wiper blade refers to a time interval in which the wiper blade is operated once, for example, the operating frequency of the wiper blade is 30 times/minute.

The vehicle speed can be graded, and different grades correspond to different wiper working frequencies. For example, when the current vehicle speed is one level, the operating frequency of the corresponding wiper blade is 25 times/min; when the current vehicle speed is two-level, the working frequency of the corresponding wiper is 35 times/min; when the current vehicle speed is three-level, the working frequency of the corresponding windscreen wiper is 45 times/min.

It should be noted that, the corresponding relationship between the current vehicle speed level and the operating frequency of the wiper may be set by itself, which is not limited in the embodiment of the present application.

In the embodiment of the application, the working frequency of the windscreen wiper is determined according to the current vehicle speed; so that the control of the demisting device is more intelligent.

Example 3: the target defogging device comprises a heating device.

Illustratively, in the case of a defogging demand on the outside of the windshield, the fog on the mirrors may also be removed by heating the outside left and right mirrors.

The heating of the exterior left view mirror and the exterior right view mirror may be controlled by a preset time or a preset temperature, specifically, the preset time is a preset time, for example, the preset time is 30s, and the preset temperature is a preset temperature, for example, the preset temperature is 25 ℃. For controlling the heating of the outer left view mirror and the outer right view mirror through the preset time, after 30 seconds, controlling the outer left view mirror and the outer right view mirror to stop heating; for controlling the heating of the outer left view mirror and the outer right view mirror by the preset temperature, in the case that the detected temperature reaches 25 ℃, the outer left view mirror and the outer right view mirror are controlled to stop heating.

It should be appreciated that the target demisting device may include one or more of examples 1 to 3 described above.

Optionally, the target defogging device comprises one or more of an air conditioner, a wiper or a heating device, and a vehicle window; for example, the target defogging device may be determined to be a target window in the vehicle based on a distance between each window in the vehicle and the windshield, wherein the distance between the target window and the glass is less than a preset distance threshold.

The preset distance threshold value refers to the maximum value of the distance between the vehicle and the windshield, which can be preset; for example, the preset distance threshold is 50cm.

For example, assuming that the preset distance threshold is 50cm, taking five vehicles as an example, the distances between four windows and the windshield are detected to be 40cm,1.5m, and 1.5m, respectively, and thus the window corresponding to 40cm from the windshield is determined as the target window. It is understood that the target window refers to a window that is closer to the windshield; alternatively, the target window may be one window or a plurality of windows, which is not limited in this application.

For example, as shown in fig. 1, in the case where fog occurs inside the windshield 110 in the vehicle 100, the target window may refer to the window 120 or the window 150 that is closer to the windshield.

For example, as shown in fig. 1, in the case where fog occurs inside the rear windshield in the vehicle 100, the target window may refer to the window 130 or the window 140 that is closer to the rear windshield.

In one implementation, the method further comprises:

and if the windshield is detected to not have the defogging requirement, controlling the target defogging device to be closed.

Illustratively, the absence of a defogging requirement for a windshield means that neither the inside nor the outside of the windshield has a defogging requirement. Specifically, in the case that the condensation value outside the vehicle is less than or equal to the preset condensation value, it is considered that there is no defogging requirement on the outer side of the windshield; under the condition that the condensation value in the vehicle is smaller than or equal to the preset condensation value, or the number of users is smaller than a preset user threshold value, or the temperature outside the vehicle is larger than a preset temperature threshold value, the outside of the windshield is considered to have no defogging requirement, and under the condition that the windshield does not have the defogging requirement, the target defogging device is controlled to be closed.

In an embodiment of the present application, in the event that a vehicle is detected to be in a driving state, determining whether a windshield in the vehicle has a defogging requirement; acquiring an area where a driver observes driving road condition information under the condition that whether a windshield in a vehicle has defogging requirements or not is determined; controlling the target defogging device to be started to remove fog on a target area; under the condition that the vehicle is required to be defogged, a target area of the windshield is obtained, and because the target area is an area of driving road condition information observed by a driver, the target area is defogged by controlling the target defogging device, so that the visual field of the driver in the driving process is clearer, and the driving safety of the vehicle is ensured.

FIG. 4 is a schematic flow chart of another method of defogging a vehicle provided by an embodiment of the present application.

Illustratively, as shown in FIG. 4, the method 300 includes the following implementation:

s310, the temperature sensor recognizes the temperature outside the vehicle and the temperature inside the vehicle, and the humidity sensor recognizes the humidity inside the vehicle and the humidity outside the vehicle.

For example, in a case where the vehicle is in a running state, the vehicle controller may control the temperature sensor and the humidity sensor to be turned on, and recognize the outside temperature, the inside temperature, and the inside humidity through the temperature sensor, and the humidity sensor recognizes the inside humidity and the outside humidity.

And S320, calculating to obtain a condensation value according to the temperature outside the vehicle, the temperature inside the vehicle, the humidity outside the vehicle and the humidity inside the vehicle.

The calculated condensation value is transmitted to the vehicle control system (Body Control Module, BCM) by means of a CAN signal, for example.

The result of the condensation value is illustratively determined by the temperature difference and the humidity, from which the corresponding condensation value can be determined.

S330, judging whether the condensation value is larger than a preset condensation threshold.

The vehicle control system determines the condensation value according to the temperature outside the vehicle, the temperature inside the vehicle, the humidity outside the vehicle and the humidity inside the vehicle, and then determines whether the condensation value is greater than a preset condensation threshold.

For example, the condensation threshold is determined by both temperature difference and humidity, and the condensation threshold indicates that fog may occur inside the windshield of the vehicle with corresponding temperature and humidity.

For example, the determination result of the condensation value and the preset condensation threshold may have the following results: the condensation value is less than a preset condensation threshold, the condensation value is equal to the preset condensation threshold, and the condensation value is greater than the preset condensation threshold

For example, if it is judged that the condensation value is greater than the preset condensation threshold, S340 may be performed.

S340, acquiring a target area.

In the case that the windshield is detected to have defogging requirements, the driving camera collects images of the driver, determines a sight line area of the driver according to the images of the driver, and acquires a target area according to the sight line area.

S350, judging whether the current vehicle speed is larger than a preset vehicle speed threshold value.

Comparing the relation between the current vehicle speed and a preset vehicle speed threshold value, wherein the current vehicle speed and the preset vehicle speed threshold value can have the following judging results: the current vehicle speed is greater than a preset vehicle speed threshold, the current vehicle speed is equal to the preset vehicle speed threshold, and the current vehicle speed is less than the preset vehicle speed threshold.

Executing S360 under the condition that the current vehicle speed is greater than a preset vehicle speed threshold value; in case that the current vehicle speed is less than the preset vehicle speed threshold, S370 is performed.

S360, controlling the opening of an air conditioner and a windscreen wiper in the vehicle.

Illustratively, the windscreen wiper is controlled to be opened by a knob mode, and the air conditioner is controlled to be opened by a knob or a soft switch mode at the same time.

Optionally, the implementation of S360 may be referred to the description related to S230 in fig. 3, which is not repeated here.

And S370, controlling the air conditioner in the vehicle to be started.

The direction of the air conditioner can be controlled to be the direction of the windshield, and the effect of removing fog can be achieved by adjusting the wind direction and/or the air outlet quantity of the air conditioner in the vehicle.

Optionally, after S360 and S370 are performed, acquiring the outside temperature, the inside temperature, and the inside humidity value through the temperature sensor and the humidity sensor in real time may be continued; calculating a condensation value through the outside temperature, the inside temperature and the humidity value; in case that the condensation value is less than the preset condensation threshold, S380 is performed.

Optionally, the implementation of S370 may be referred to the related description in S230 in fig. 3, which is not repeated here.

Illustratively, to ensure a ride experience (e.g., comfort of the in-vehicle environment temperature) for the in-vehicle user while defogging the windshield; the air conditioning modes of each air conditioner of a plurality of air conditioners in a vehicle can be independently set according to the target area with fog in the windshield and the temperature in the vehicle; the air conditioning mode includes a wind direction of an air conditioner, a damper of the air conditioner, a temperature of the air conditioner, and the like.

For example, 4 air conditioners are installed in a vehicle; wherein the wind direction of 1 air conditioner (for example, air conditioner a) is set for wind outlet to the windshield; setting the wind direction of 1 air conditioner (for example, air conditioner B) for air outlet to the bottom of the cockpit; setting a wind direction of 1 air conditioner (e.g., air conditioner C) for discharging wind to a rear user in the cockpit; setting a wind direction of 1 air conditioner (e.g., air conditioner D) for wind-out to a user's body (e.g., a user's face and/or a user's upper body) in the cockpit; further, the temperatures and wind speeds of the air conditioners a to D may be set separately; for example, the temperature of the air conditioner A is set to be 1 gear temperature, and the windshield is set to be 1 gear; setting the temperature of the air conditioner B as 2-gear temperature and the windshield as 2-gear; setting the temperature of the air conditioner C as 3-gear temperature and the windshield as 3-gear; the temperature of the air conditioner D is set to be 1 gear temperature and the windshield is set to be 3 gears.

In one embodiment, the proportion of the fog area of the target area to the windshield is positively related to the wind speed of the air conditioner a, the larger the proportion is, the larger the wind speed of the air conditioner a is, and the proportion intervals corresponding to the wind speeds of the air conditioner a are set in advance, for example, when the proportion of the fog area of the target area to the windshield is 10% to 20%, the windshield corresponding to the air conditioner a is in gear 1; the windshield corresponding to the air conditioner A is in gear 2 under the condition that the fog area of the target area accounts for 20-30% of the windshield; in the case where the target area has a mist area of 30% to 40% of the windshield, the windshield corresponding to the air conditioner a is 3 rd gear. For example, when the area of the fog in the target area is 35% of the windshield, controlling the windshield of the air conditioner a to be 3-gear, controlling the air conditioner a to blow air to the position where the target area is located, and increasing the blowing temperature of the air conditioner a so that the difference between the temperature in the vehicle and the temperature outside the vehicle is smaller than a preset threshold, and simultaneously, if the temperature in the vehicle is greater than a first threshold, which indicates that the temperature in the vehicle is too high, controlling the wind direction of the air conditioner B and/or the air conditioner C to face the user and reducing the blowing temperature of the air conditioner B and/or the air conditioner C, wherein the blowing temperature of the air conditioner B and/or the air conditioner C after the reduction is between the first threshold and a second threshold, so that the problem of poor user comfort caused by the too high temperature in the vehicle is avoided when the removal of the fog in the target area is realized; wherein the user experiences neither cold nor heat when the blowing temperature is between the first and second thresholds. If the temperature in the vehicle is smaller than the second threshold value, which means that the temperature in the vehicle is too low, the user feels cold, the wind directions of the air conditioner B and/or the air conditioner C are controlled to face the user, the blowing temperatures of the air conditioner B and the air conditioner C are raised, and the blowing temperatures of the air conditioner B and the air conditioner C after the raising are between the first threshold value and the second threshold value, so that the problem of poor user comfort caused by the too low temperature in the vehicle is avoided under the condition of removing the fog in the target area. And, the windshield of air conditioner B and air conditioner C is controlled to be bigger, the speed of heating up or cooling down is faster, for example, if the speed of heating up or cooling down is faster, the windshield of air conditioner B and air conditioner C is controlled to be 3 gear, and if the speed of heating up or cooling down is moderate, the windshield of air conditioner B and/or air conditioner C is controlled to be 2 gear.

After removing the mist in the target area, the air conditioner a, the air conditioner B, and the air conditioner C may be controlled using the same parameters such that the difference between the in-vehicle temperature and the out-of-vehicle temperature is less than a preset threshold.

S380, controlling the target defogging device to be closed.

For example, in the case where the target defogging device is an air conditioner in a vehicle, the air conditioner in the vehicle is controlled to be turned off; in the case where the target defogging device is an air conditioner and a wiper in a vehicle, the air conditioner and the wiper in the vehicle are controlled to be closed.

Optionally, the implementation of S370 may be referred to the related description in S230 in fig. 3, which is not repeated here.

In the embodiment of the application, the temperature inside the vehicle and the temperature outside the vehicle are obtained through the temperature sensor, and the humidity inside the vehicle and the humidity outside the vehicle are obtained through the humidity sensor; the temperature difference is obtained according to the temperature in the vehicle and the temperature outside the vehicle, and the condensation value is obtained by calculation according to the temperature difference and the humidity, so that the obtained condensation value result is more accurate; comparing the condensation value with a preset condensation value, and under the condition that the condensation value does not reach the preset condensation value, closing the control target defogging device, so that the control target defogging device is more intelligent; acquiring a target area under the condition that the condensation value reaches a preset condensation value; judging whether the current vehicle speed is greater than a preset vehicle speed threshold value, and controlling an air conditioner and a windscreen wiper in the vehicle to be opened under the condition that the vehicle speed is greater than the preset vehicle speed threshold value; controlling air conditioning and starting in the vehicle under the condition that the vehicle speed is less than or equal to a preset vehicle speed threshold value; the target defogging device is controlled to remove the fog in the target area, so that the visual field of a driver in the driving process is clearer, the driving safety of the vehicle is ensured, and the target defogging device is determined to be an air conditioner under the condition that the current vehicle speed is smaller than the preset vehicle speed threshold value, and compared with the case that the air conditioner and the windscreen wiper are started to remove the fog in the target area, the energy consumption of the vehicle can be saved to a certain extent.

It should be appreciated that the above illustration is to aid one skilled in the art in understanding the embodiments of the application and is not intended to limit the embodiments of the application to the specific numerical values or the specific scenarios illustrated. It will be apparent to those skilled in the art from the foregoing description that various equivalent modifications or variations can be made, and such modifications or variations are intended to be within the scope of the embodiments of the present application.

The method for demisting a vehicle provided in an embodiment of the present application is described in detail above in conjunction with fig. 1 to 4; an embodiment of a vehicle defogging device according to the present application will be described in detail below with reference to fig. 5 and 6. It should be understood that the apparatus in the embodiments of the present application may perform the foregoing methods for defogging various vehicles in the embodiments of the present application, that is, specific working processes of various products may refer to corresponding processes in the foregoing embodiments of the methods for defogging vehicles.

Fig. 5 is a schematic structural diagram of a device for demisting a vehicle according to an embodiment of the present application, where the in-vehicle environment adjustment device 400 includes:

a determining module 410 for determining whether a windshield in a vehicle has a defogging requirement if it is detected that the vehicle is in a driving state;

the obtaining module 420 is used for obtaining a target area in the windshield if the windshield has defogging requirements, wherein the target area is used for representing an area in the windshield, in which a driver observes driving road condition information;

A control module 430 for controlling the target defogging device to be turned on to cause fog removal on the inside of the windshield in the vehicle.

Optionally, as an embodiment, the determining module 410 is further configured to:

acquiring the current speed of the vehicle;

and determining a target defogging device according to the current vehicle speed.

Optionally, as an embodiment, the determining module 410 is specifically configured to:

if the current vehicle speed is greater than a preset vehicle speed threshold value, determining that the target defogging device is an air conditioner and a windscreen wiper in the vehicle;

and if the current vehicle speed is smaller than or equal to a preset vehicle speed threshold value, determining that the target defogging device is an air conditioner in the vehicle.

Optionally, as an embodiment, the determining module 410 is further configured to:

and determining the working frequency of the windscreen wiper according to the current vehicle speed.

Optionally, as an embodiment, the determining module 420 is specifically configured to:

if the vehicle is detected to be in a running state, acquiring the temperature outside the vehicle, the temperature inside the vehicle and the humidity outside the vehicle;

determining a condensation value outside the vehicle according to the temperature outside the vehicle, the temperature inside the vehicle and the humidity outside the vehicle;

if the condensation value outside the automobile is larger than the preset condensation value, determining that the outer side of the windshield has defogging requirements.

Optionally, as an embodiment, the determining module 420 is specifically configured to:

If the vehicle is detected to be in a running state, acquiring the temperature outside the vehicle, the temperature in the vehicle and the humidity in the vehicle;

determining a condensation value in the vehicle according to the temperature outside the vehicle, the temperature in the vehicle and the humidity in the vehicle;

if the condensation value in the vehicle is larger than the preset condensation value, determining that the inner side of the windshield has a defogging requirement; or,

if the vehicle is detected to be in a running state, acquiring the temperature outside the vehicle and the number of users in the vehicle;

if the temperature outside the vehicle is less than the preset temperature threshold value and the number of users is greater than the preset user threshold value, determining that the inner side of the windshield has a defogging requirement.

Optionally, as an embodiment, the obtaining module 420 is specifically configured to:

if the windshield has defogging requirements, acquiring an image of a driver in the cockpit;

determining a line-of-sight area of the driver in the windshield from the image of the driver;

and acquiring a target area according to the sight line area.

Optionally, as an embodiment, the control module 430 is further configured to:

and if the windshield is detected to not have the defogging requirement, controlling the target defogging device to be closed.

For example, a "module" may be a software program, a hardware circuit, or a combination of both that implements the functionality described above. The hardware circuitry may include application specific integrated circuits (application specific integrated circuit, ASICs), electronic circuits, processors (e.g., shared, proprietary, or group processors, etc.) and memory for executing one or more software or firmware programs, merged logic circuits, and/or other suitable components that support the described functions.

Thus, the elements of the examples described in the embodiments of the present application can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

Fig. 6 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

Illustratively, as shown in FIG. 6, the vehicle 500 includes: memory 501 and processor 502, wherein memory 501 has stored therein executable program code 5011, and processor 502 is configured to invoke and execute the executable program code 5011 to perform a method of defogging a vehicle.

In addition, the embodiment of the application also protects a vehicle defogging device, which can comprise a memory and a processor, wherein executable program codes are stored in the memory, and the processor is used for calling and executing the executable program codes to execute the vehicle defogging method provided by the embodiment of the application.

In this embodiment, the functional modules of the apparatus may be divided according to the above method example, for example, each functional module may be corresponding to one processing module, or two or more functions may be integrated into one processing module, where the integrated modules may be implemented in a hardware form. It should be noted that, in this embodiment, the division of the modules is schematic, only one logic function is divided, and another division manner may be implemented in actual implementation.

In the case of dividing the respective function modules by the respective functions, the apparatus may further include an acquisition module, a determination module, a control module, and the like. It should be noted that, all relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

It should be understood that the apparatus provided in this embodiment is used to perform the method for defogging a vehicle described above, and thus the same effects as those achieved by the above-described implementation method can be achieved.

In case of an integrated unit, the apparatus may comprise a processing module, a memory module. Wherein, when the device is applied to a vehicle, the processing module can be used for controlling and managing the action of the vehicle. The memory module may be used to support the vehicle in executing mutual program code, etc.

Wherein the processing module may be a processor or controller that may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the present disclosure. A processor may also be a combination of computing functions, e.g., including one or more microprocessors, digital signal processing (digital signal processing, DSP) and microprocessor combinations, etc., and a memory module may be a memory.

In addition, the apparatus provided by the embodiments of the present application may be a chip, a component, or a module, where the chip may include a processor and a memory connected to each other; the memory is used for storing instructions, and when the processor calls and executes the instructions, the chip can be caused to execute the method for defogging the vehicle provided by the embodiment.

The present embodiment also provides a computer readable storage medium having stored therein computer program code which, when run on a computer, causes the computer to perform the above-described related method steps to implement a method for defogging a vehicle as provided in the above-described embodiments.

The present embodiment also provides a computer program product which, when run on a computer, causes the computer to perform the above-described related steps to implement a method for defogging a vehicle as provided in the above-described embodiments.

The apparatus, the computer readable storage medium, the computer program product, or the chip provided in this embodiment are used to execute the corresponding method provided above, and therefore, the advantages achieved by the apparatus, the computer readable storage medium, the computer program product, or the chip can refer to the advantages of the corresponding method provided above, which are not described herein.

It will be appreciated by those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A method of defogging a vehicle, the method comprising:

if the vehicle is detected to be in a running state, determining whether a windshield in the vehicle has a defogging requirement or not;

if the windshield has the defogging requirement, acquiring a target area in the windshield, wherein the target area is used for representing an area in the windshield, in which a driver observes driving road condition information;

and controlling a target defogging device in the vehicle to be started so as to remove fog on the target area.

2. The method as recited in claim 1, further comprising:

acquiring the current speed of the vehicle;

and determining the target defogging device according to the current vehicle speed.

3. The method of claim 2, wherein the determining the target defogging device based on the current vehicle speed comprises:

if the current vehicle speed is greater than a preset vehicle speed threshold, determining that the target defogging device is an air conditioner and a windscreen wiper in the vehicle;

and if the current vehicle speed is smaller than or equal to a preset vehicle speed threshold value, determining that the target defogging device is an air conditioner in the vehicle.

4. A method according to claim 3, further comprising:

And determining the working frequency of the windscreen wiper according to the current vehicle speed.

5. The method according to any one of claims 1 to 4, wherein the determining whether a windshield in the vehicle has a defogging demand if a vehicle is detected in a driving state comprises:

if the vehicle is detected to be in the running state, acquiring the vehicle exterior temperature of the vehicle, the vehicle interior temperature of the vehicle and the vehicle exterior humidity of the vehicle;

determining a condensation value outside the vehicle according to the temperature outside the vehicle, the temperature inside the vehicle and the humidity outside the vehicle;

and if the condensation value outside the vehicle is larger than a preset condensation value, determining that the defogging requirement exists on the outer side of the windshield.

6. The method according to any one of claims 1 to 4, wherein the determining whether a windshield in the vehicle has a defogging demand if a vehicle is detected in a driving state comprises:

if the vehicle is detected to be in the running state, acquiring the temperature outside the vehicle, the temperature inside the vehicle and the humidity inside the vehicle;

determining a condensation value in the vehicle according to the temperature outside the vehicle, the temperature in the vehicle and the humidity in the vehicle;

if the condensation value in the vehicle is larger than a preset condensation value, determining that the inner side of the windshield has the defogging requirement; or,

If the vehicle is detected to be in the running state, acquiring the temperature outside the vehicle and the number of users in the vehicle;

and if the temperature outside the vehicle is smaller than a preset temperature threshold value and the number of users is larger than a preset user threshold value, determining that the inner side of the windshield has the defogging requirement.

7. The method of any one of claims 1 to 4, wherein the obtaining a target area in the windshield if the windshield has the defogging demand comprises:

if the windshield has the defogging requirement, acquiring an image of the driver in a cockpit;

determining a line-of-sight area of the driver in the windshield from the image of the driver;

and acquiring the target area according to the sight line area.

8. The method according to any one of claims 1 to 4, further comprising:

and if the windshield is detected not to have the defogging requirement, controlling the target defogging device to be closed.

9. A device for defogging a vehicle, the device comprising:

the determining module is used for determining whether a windshield in the vehicle has defogging requirements or not if the vehicle is detected to be in a running state;

The acquisition module is used for acquiring a target area in the windshield if the windshield has the defogging requirement, wherein the target area is used for representing an area in the windshield, in which a driver observes driving road condition information;

and the control module is used for controlling the target defogging device to be started so as to remove fog on the target area.

10. A vehicle, characterized in that the vehicle comprises:

a memory for storing executable program code;

a processor for calling and running the executable program code from the memory, causing the vehicle to perform the method of any one of claims 1 to 8.