CN117246100A - Vehicle window defogging method and device - Google Patents

Abstract

A vehicle window defogging method and device belong to the field of vehicle control. The method comprises the following steps: acquiring environmental characteristic information in a first vehicle through a sensing system of the first vehicle; determining whether windows of the first vehicle are fogged according to the environmental characteristic information in the first vehicle; determining a target defogging mode according to the ambient temperature in the first vehicle and the ambient temperature outside the first vehicle under the condition that the windows of the first vehicle are fogged; and defogging the windows of the first vehicle by adopting a target defogging mode. The application can improve the defogging effect of the vehicle window and ensure the driving safety.

Description

Vehicle window defogging method and device

Technical Field

The application relates to the field of vehicle control, in particular to a vehicle window defogging method and device.

Background

The vehicle window fogging refers to the phenomenon that water vapor is condensed on the surface of the vehicle window to form water mist due to the difference of the temperature, the humidity and the like inside and outside the vehicle. The water mist formed on the surface of the window easily affects the field of view of the driver and the judgment of the driving situation, and further affects the running safety of the vehicle, so that the window needs to be defogged when the window is fogged.

Currently, the defogging of the windows is performed manually by the driver, but this easily affects the driving safety.

Disclosure of Invention

The application provides a vehicle window defogging method and device, which can improve the defogging effect of the vehicle window and ensure the driving safety. The technical scheme of the application is as follows.

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

acquiring environmental characteristic information in a first vehicle through a sensing system of the first vehicle;

determining whether windows of the first vehicle are fogged according to the environmental characteristic information in the first vehicle;

determining a target defogging mode according to the ambient temperature in the first vehicle and the ambient temperature outside the first vehicle under the condition that the windows of the first vehicle are fogged;

and defogging the window of the first vehicle by adopting the target defogging mode.

Optionally, the sensing system includes a fog sensor, the environmental characteristic information includes a fog sensing signal, the fog sensing signal is a pulse signal, and determining whether a window of the first vehicle is fogged according to the environmental characteristic information in the first vehicle includes: and determining whether the window of the first vehicle is fogged according to the pulse frequency of the fog sensing signal.

Optionally, the sensing system includes a temperature sensor and a humidity sensor, the environmental characteristic information includes an environmental temperature in the first vehicle, an environmental humidity in the first vehicle, and a temperature of an inner surface of a window of the first vehicle, and the determining whether the window of the first vehicle is fogged according to the environmental characteristic information in the first vehicle includes:

Determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature;

determining whether a window of the first vehicle is fogged based on a dew point temperature within the first vehicle and a temperature of an interior surface of the window of the first vehicle.

Optionally, the sensing system includes a temperature sensor, a humidity sensor, and a fog sensor, the environmental characteristic information includes an environmental temperature in the first vehicle, an environmental humidity in the first vehicle, a temperature of an inner surface of a window of the first vehicle, and a fog sensing signal, the fog sensing signal is a pulse signal, and determining whether the window of the first vehicle is fogged according to the environmental characteristic information in the first vehicle includes:

determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature;

And determining whether the window of the first vehicle is fogged according to the pulse frequency of the fog sensing signal under the condition that the temperature of the inner surface of the window of the first vehicle reaches the dew point temperature in the first vehicle.

Optionally, the determining the target defogging mode according to the ambient temperature inside the first vehicle and the ambient temperature outside the first vehicle includes:

determining that the target defogging mode is a warm air defogging mode under the condition that the ambient temperature in the first vehicle is greater than the ambient temperature outside the first vehicle;

and determining that the target defogging mode is a cold air defogging mode under the condition that the ambient temperature in the first vehicle is not greater than the ambient temperature outside the first vehicle.

Optionally, the defogging the window of the first vehicle by using the target defogging mode includes: and controlling the operation of the air conditioning system of the first vehicle according to the target defogging mode so as to defog the windows of the first vehicle.

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

the acquisition module is used for acquiring the environmental characteristic information in the first vehicle through a sensing system of the first vehicle;

A first determining module for determining whether windows of the first vehicle are fogged according to environmental characteristic information in the first vehicle;

the second determining module is used for determining a target defogging mode according to the ambient temperature in the first vehicle and the ambient temperature outside the first vehicle under the condition that the windows of the first vehicle are fogged;

and the defogging module is used for defogging the window of the first vehicle in the target defogging mode.

Optionally, the sensing system includes a fog sensor, the environmental characteristic information includes a fog sensing signal, the fog sensing signal is a pulse signal, and the first determining module is configured to determine whether a window of the first vehicle is fogged according to a pulse frequency of the fog sensing signal.

Optionally, the sensing system includes a temperature sensor and a humidity sensor, the environmental characteristic information includes an environmental temperature within the first vehicle, an environmental humidity within the first vehicle, and a temperature of an inner surface of a window of the first vehicle, and the first determining module is configured to:

determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature;

Determining whether a window of the first vehicle is fogged based on a dew point temperature within the first vehicle and a temperature of an interior surface of the window of the first vehicle.

Optionally, the sensing system includes a temperature sensor, a humidity sensor and a mist sensor, the environmental characteristic information includes an environmental temperature in the first vehicle, an environmental humidity in the first vehicle, a temperature of an inner surface of a window of the first vehicle and a mist sensing signal, the mist sensing signal is a pulse signal, and the first determining module is configured to:

determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature;

and determining whether the window of the first vehicle is fogged according to the pulse frequency of the fog sensing signal under the condition that the temperature of the inner surface of the window of the first vehicle reaches the dew point temperature in the first vehicle.

Optionally, the second determining module is configured to:

determining that the target defogging mode is a warm air defogging mode under the condition that the ambient temperature in the first vehicle is greater than the ambient temperature outside the first vehicle;

And determining that the target defogging mode is a cold air defogging mode under the condition that the ambient temperature in the first vehicle is not greater than the ambient temperature outside the first vehicle.

Optionally, the defogging module is configured to control an air conditioning system of the first vehicle to operate according to the target defogging mode, so as to defog windows of the first vehicle.

In a third aspect, a vehicle window defogging device is provided, comprising a memory and a processor;

the memory is used for storing a computer program;

the processor is configured to execute a computer program stored in the memory to cause the window defogging device to perform a window defogging method as provided in the first aspect or any of the alternative implementations of the first aspect.

In a fourth aspect, there is provided a vehicle comprising a window defogging device as provided in the second aspect or any of the alternative implementations of the second aspect, or comprising a window defogging device as provided in the third aspect.

In a fifth aspect, there is provided a computer readable storage medium having stored therein a computer program which when executed implements a window defogging method as provided in the first aspect or any of the alternatives of the first aspect.

In a sixth aspect, there is provided a computer program product comprising a program or code which when executed implements a method of defogging a vehicle window as provided in the first aspect or any of the alternatives of the first aspect described above.

In a seventh aspect, there is provided a chip comprising programmable logic circuitry and/or program instructions, the chip being operable to implement a window defogging method as provided in the first aspect or any of the alternatives of the first aspect.

The beneficial effects that technical scheme that this application provided brought include:

according to the window defogging method and device, after the window defogging device obtains environmental characteristic information in the first vehicle through the sensing system of the first vehicle, whether the window of the first vehicle is fogged according to the environmental characteristic information in the first vehicle, the window defogging device determines a target defogging mode according to the environmental temperature in the first vehicle and the environmental temperature outside the first vehicle under the condition that the window of the first vehicle is fogged, and the window of the first vehicle is defogged by adopting the target defogging mode, so that the window defogging device determines the window defogging mode and defogs the window of the first vehicle, and compared with the scheme that a driver manually defogs the window, the window defogging effect can be improved, and the driving safety of the first vehicle in the window defogging process is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a flow chart of a method for defogging a vehicle window according to an embodiment of the present application;

FIG. 2 is a flow chart of another method for defogging a vehicle window provided in an embodiment of the present application;

FIG. 3 is a flow chart of yet another method for defogging a vehicle window provided in an embodiment of the present application;

FIG. 4 is a schematic view of a vehicle window defogging device according to an embodiment of the present application;

fig. 5 is a schematic view of a vehicle according to an embodiment of the present application.

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

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings, wherein it is apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Vehicles are one of important riding tools in modern society, and particularly solve the problem of people going out to a great extent under severe weather conditions. Under the conditions of hot, cold, rainy and snowy days and the like, the space in the vehicle is relatively closed, and certain differences exist in temperature, humidity and the like inside and outside the vehicle, so that water vapor is easily caused to condense on the surface of the vehicle window to form water mist, namely the vehicle window is fogged. The fog of the vehicle window, especially the front windshield window of the vehicle, is easy to influence the visual field of a driver and judgment on driving conditions, and further influences the driving safety of the vehicle, so that the fog of the vehicle window is effectively carried out in time, and the fog is very important to improve the driving safety. In the technology commonly used at present, a driver manually uses an air conditioner defogging function to defog a vehicle window according to subjective feeling. However, the manual defogging mode has certain drawbacks. For example, the defogging mode selected by the driver is unsuitable, so that the air conditioner cannot blow off fog on the vehicle window in a short time, and the driving safety is affected. For another example, the driver may easily be distracted during manual selection of the defogging mode, and may easily affect driving safety.

The embodiment of the application provides a vehicle window defogging method and device, wherein the vehicle window defogging method is executed by a vehicle window defogging device deployed in a first vehicle. After the environmental characteristic information in the first vehicle is acquired through the sensing system of the first vehicle, whether the window of the first vehicle is fogged or not is determined according to the environmental characteristic information in the first vehicle, under the condition that the window of the first vehicle is fogged, the target defogging mode is determined according to the environmental temperature in the first vehicle and the environmental temperature outside the first vehicle, and the window defogging mode is adopted by the window defogging device to defog the window of the first vehicle.

The following describes a technical scheme of the present application, and first, an embodiment of a vehicle window defogging method of the present application is described.

Referring to fig. 1, a flowchart of a vehicle window defogging method according to an embodiment of the present application is shown. The window defogging method is performed by a window defogging device disposed in a first vehicle. Referring to fig. 1, the window defogging method includes the following steps S101 to S104.

S101, acquiring environmental characteristic information in a first vehicle through a sensing system of the first vehicle.

The sensing system of the first vehicle may include a plurality of sensors through which the window defogging device obtains environmental characteristic information within the first vehicle. Wherein the plurality of sensors includes at least one of a temperature sensor, a humidity sensor, and a fog sensor, and the corresponding environmental characteristic information within the first vehicle includes at least one of a fog sensing signal, an environmental temperature within the first vehicle, an environmental humidity within the first vehicle, and a temperature of an inner surface of a window of the first vehicle. The fog sensing signal is collected by a fog sensor, and the ambient temperature in the first vehicle and the temperature of the inner surface of the window of the first vehicle are collected by a temperature sensor, and the ambient humidity in the first vehicle is collected by a humidity sensor. Wherein the number of each sensor may be one or more. For example, the sensing system of the first vehicle includes a temperature sensor disposed on an inner surface of a window of the first vehicle (e.g., a temperature sensor disposed on an inner surface of a front windshield window of the first vehicle), a temperature sensor disposed on a center console of the first vehicle below an instrument panel of the first vehicle, a humidity sensor disposed on the center console of the first vehicle below the front windshield window of the first vehicle, a fog sensor disposed on the center console of the first vehicle below the front windshield window of the first vehicle, and the like.

In an alternative embodiment, the sensing system of the first vehicle includes a fog sensor, and the environmental characteristic information in the first vehicle includes a fog sensing signal, where the fog sensor may be a pulse signal, and the window defogging device acquires the fog sensing signal in the first vehicle through the fog sensor. The fog sensor is arranged on a center console of the first vehicle, for example, on the center console of the first vehicle and below a front windshield window of the first vehicle. In one embodiment, the mist sensor includes a light emitter and a light receiver; the light emitter is arranged on the center console of the first vehicle and positioned on the right side below the front windshield window of the first vehicle, the light emitter can be an infrared light emitting diode, the light emitter works in an infrared light wave band, and the light emitter is used for emitting infrared light to the windshield window (such as the front windshield window) of the first vehicle; the infrared light emitted by the light emitter may be reflected at a window of the first vehicle; the light receiver is provided on the center console of the first vehicle and is located on the left side below the front windshield window of the first vehicle, and is configured to receive infrared light reflected via the window of the first vehicle and generate a pulse signal, i.e., a fog sensing signal, based on the received infrared light. In the case where the window is not fogged, the pulse frequency of the pulse signal generated by the light receiver based on the received infrared light reflected by the window is regular, for example, the pulse frequency of the pulse signal is a fixed frequency; in the case of a window fogging, the water mist on the window surface causes diffuse reflection of the infrared light irradiated to the window, and thus the infrared light reflected via the window is unbalanced, and the pulse frequency of the pulse signal generated based on the received infrared light reflected via the window by the light receiver is irregular, for example, the pulse frequency of the pulse signal is not fixed, only high level or low level, and the like.

In an alternative embodiment, the sensing system of the first vehicle comprises at least one temperature sensor provided at an inner surface of a window of the first vehicle (e.g. a front windshield window), the environmental characteristic information within the first vehicle comprises a temperature of the inner surface of the window of the first vehicle, and the window defogging device obtains the temperature of the inner surface of the window of the first vehicle (e.g. the front windshield window) via the at least one temperature sensor. In one embodiment, the at least one temperature sensor is a temperature sensor, and the window defogging device determines a temperature acquired by the temperature sensor as a temperature of an inner surface of a window of the first vehicle; in another embodiment, the at least one temperature sensor is a plurality of temperature sensors, and the window defogging device determines an average value of temperatures acquired by the plurality of temperature sensors as a temperature of an inner surface of a window of the first vehicle.

In an alternative embodiment, the sensing system of the first vehicle includes at least one temperature sensor disposed on a center console of the first vehicle and located under an instrument panel of the first vehicle, and the environmental characteristic information in the first vehicle includes an environmental temperature in the first vehicle, and the window defogging device acquires the environmental temperature in the first vehicle via the at least one temperature sensor. In one embodiment, the at least one temperature sensor is a temperature sensor, and the window defogging device determines a temperature collected by the temperature sensor as an ambient temperature within the first vehicle; in another embodiment, the at least one temperature sensor is a plurality of temperature sensors, and the window defogging device determines an average of temperatures collected by the plurality of temperature sensors as an ambient temperature within the first vehicle.

In an alternative embodiment, the sensing system of the first vehicle comprises at least one humidity sensor, and the environmental characteristic information in the first vehicle comprises an environmental humidity in the first vehicle, and the window defogging device is configured to acquire the environmental humidity in the first vehicle via the at least one humidity sensor. The at least one humidity sensor may be arranged on a center console of the first vehicle, for example on the center console of the first vehicle below a front windshield window of the first vehicle. In one embodiment, the at least one humidity sensor is a humidity sensor, and the window defogging device determines the humidity collected by the one humidity sensor as the ambient humidity within the first vehicle; in another embodiment, the at least one humidity sensor is a plurality of humidity sensors, and the window defogging device determines an average value of the humidity collected by the plurality of humidity sensors as the ambient humidity within the first vehicle.

S102, determining whether windows of the first vehicle are fogged according to the environmental characteristic information in the first vehicle.

As is known from S101, the environmental characteristic information in the first vehicle includes at least one of a fog sensing signal in the first vehicle, an environmental temperature in the first vehicle, an environmental humidity in the first vehicle, and a temperature of an inner surface of a window of the first vehicle, and therefore, the window defogging device determines whether the window (e.g., a front windshield window) of the first vehicle is fogged based on at least one of the fog sensing signal in the first vehicle, the environmental temperature in the first vehicle, the environmental humidity in the first vehicle, and the temperature of the inner surface of the window of the first vehicle.

The implementation of S102 is described in three implementations below.

The first implementation mode: the environmental characteristic information in the first vehicle includes a fog sensing signal, and the window defogging device determines whether a window (e.g., a front windshield window) of the first vehicle is fogged based on the fog sensing signal in the first vehicle. Optionally, the fog sensing signal is a pulse signal, and the window defogging device determines whether the window of the first vehicle is fogged according to the pulse frequency of the fog sensing signal. Specifically, the window defogging device determines whether the pulse frequency of the fog sensing signal is regular, for example, whether the pulse frequency of the fog sensing signal is a fixed frequency, if the pulse frequency of the fog sensing signal is regular, the window defogging device determines that the window of the first vehicle is not fogged, and if the pulse frequency of the fog sensing signal is irregular, the window defogging device determines that the window of the first vehicle is fogged.

According to the technical scheme, the vehicle window defogging device determines whether the vehicle window of the first vehicle is fogged according to the fog sensing signals acquired by the fog sensor, and can determine whether the vehicle window of the first vehicle is fogged more directly.

The second implementation mode: the environmental characteristic information in the first vehicle includes an environmental temperature in the first vehicle, an environmental humidity in the first vehicle, and a temperature of an inner surface of a window (e.g., a front windshield window) of the first vehicle, and the window defogging device determines whether the window (e.g., the front windshield window) of the first vehicle is fogged based on the environmental temperature in the first vehicle, the environmental humidity in the first vehicle, and the temperature of the inner surface of the window of the first vehicle. In one embodiment, the window defogging device determines a dew point temperature within the first vehicle based on an ambient temperature within the first vehicle, an ambient humidity within the first vehicle, and a first mapping, and the window defogging device determines whether a window of the first vehicle is fogged based on the dew point temperature within the first vehicle and a temperature of an interior surface of a window of the first vehicle (e.g., a front windshield window). By way of example, the window defogging device determines whether the temperature of an interior surface of a window of a first vehicle (e.g., a front windshield window) has reached a dew point temperature within the first vehicle; the window defogging device determining window fogging of the first vehicle if the temperature of the inner surface of the window of the first vehicle reaches a dew point temperature within the first vehicle; the window defogging device determines that the window of the first vehicle is not fogged if the temperature of the interior surface of the window of the first vehicle does not reach a dew point temperature within the first vehicle. The term "reaching" includes less than or equal to, i.e., where the temperature of the interior surface of the window of the first vehicle (e.g., a front windshield window) is less than or equal to the dew point temperature within the first vehicle, the window defogging device determines that the window of the first vehicle is fogged.

In this embodiment of the present application, the first mapping relationship is used to record a mapping relationship of an ambient temperature, an ambient humidity, and a dew point temperature, where the dew point temperature is a temperature when air is cooled to saturation under a condition that neither the moisture content nor the air pressure is changed, that is, a temperature when water vapor in the air becomes dew. In one embodiment, the first mapping relationship is a one-to-one correspondence relationship between the ambient temperature, the ambient humidity and the dew point temperature, and a plurality of ambient temperatures, a plurality of ambient humidities and a plurality of dew point temperatures are recorded in the first mapping relationship, where one ambient temperature and one ambient humidity uniquely correspond to one dew point temperature. The vehicle window defogging device searches a first mapping relation according to the ambient temperature in the first vehicle and the ambient humidity in the first vehicle, and the vehicle window defogging device determines the dew point temperature corresponding to the ambient temperature in the first vehicle and the ambient humidity in the first vehicle in the first mapping relation as the dew point temperature in the first vehicle. In one example, the first mapping is shown in table 1 below:

TABLE 1

Ambient temperature	Ambient humidity	Dew point temperature
			T1	W1	L1
T2	W2	L2
			T3	W3	L3
……	……	……
			Tk	Wk	Lk

For example, as shown in table 1, the ambient temperature "T1", the ambient humidity "W1" and the dew point temperature "L1" are in one-to-one correspondence, the ambient temperature "T2", the ambient humidity "W2" and the dew point temperature "L2" are in one-to-one correspondence, the ambient temperature "T3", the ambient humidity "W3" and the dew point temperature "L3" are in one-to-one correspondence, and so on.

In one example, the ambient temperature in the first vehicle is T1, the ambient humidity of the first vehicle is W1, and the window defogging device determines that the dew point temperature in the first vehicle is L1 according to the first mapping relationship shown in table 1, which is searched for by the ambient temperature "T1" of the first vehicle and the ambient humidity "W1" of the first vehicle.

In another example, the ambient temperature in the first vehicle is T2, the ambient humidity of the first vehicle is W2, and the window defogging device determines that the dew point temperature in the first vehicle is L2 according to the first map relationship shown in table 1, which is searched for the ambient temperature "T2" of the first vehicle and the ambient humidity "W2" of the first vehicle.

Third implementation: the environmental characteristic information in the first vehicle includes an environmental temperature in the first vehicle, an environmental humidity in the first vehicle, a temperature of an inner surface of a window of the first vehicle (e.g., a front windshield window) and a fog sensing signal in the first vehicle, and the window defogging device determines whether the window of the first vehicle (e.g., the front windshield window) is fogged based on the environmental temperature in the first vehicle, the environmental humidity in the first vehicle, the temperature of the inner surface of the window of the first vehicle and the fog sensing signal in the first vehicle. In one embodiment, the fog sensing signal is a pulse signal, the window defogging device determines a dew point temperature in the first vehicle according to an ambient temperature in the first vehicle, an ambient humidity in the first vehicle and a first mapping relation, the window defogging device determines whether a temperature of an inner surface of a window (e.g. a front windshield window) of the first vehicle reaches the dew point temperature in the first vehicle, and the window defogging device determines whether the window of the first vehicle is fogged according to a pulse frequency of the fog sensing signal in case the temperature of the inner surface of the window of the first vehicle reaches the dew point temperature in the first vehicle. The first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature. The implementation process of the window control device for determining whether the window of the first vehicle is fogged according to the pulse frequency of the fog sensing signal may refer to the first implementation manner, which is not described herein.

According to the technical scheme, when the temperature of the inner surface of the window (such as the front windshield window) of the first vehicle reaches the dew point temperature in the first vehicle, the window defogging device preliminarily determines that the window of the first vehicle is fogged, and then the window defogging device further determines (or verifies) whether the window of the first vehicle is fogged according to the pulse frequency of the fog sensing signal in the first vehicle, so that the accuracy of determining whether the window of the first vehicle is fogged can be improved.

S103, under the condition that windows of the first vehicle are fogged, determining a target defogging mode according to the ambient temperature in the first vehicle and the ambient temperature outside the first vehicle.

In an alternative embodiment, the window defogging device acquires an ambient temperature inside the first vehicle and an ambient temperature outside the first vehicle, and determines whether the ambient temperature inside the first vehicle is greater than the ambient temperature outside the first vehicle; when the ambient temperature in the first vehicle is higher than the ambient temperature outside the first vehicle, the vehicle window defogging device determines that the target defogging mode is a warm air defogging mode; and under the condition that the ambient temperature in the first vehicle is not greater than the ambient temperature outside the first vehicle, the vehicle window defogging device determines that the target defogging mode is a cold air defogging mode.

In an alternative embodiment, the sensing system of the first vehicle comprises at least one temperature sensor arranged outside the first vehicle, for example at least one temperature sensor arranged at a bumper of the first vehicle, by means of which at least one temperature sensor the window defogging device is adapted to obtain the ambient temperature outside the first vehicle. Wherein the detection element of the at least one temperature sensor adopts a negative temperature coefficient resistor, and the resistance value of the temperature sensor changes along with the change of temperature, for example, decreases along with the increase of temperature and increases along with the decrease of temperature. In one embodiment, the at least one temperature sensor is a temperature sensor, and the window defogging device determines a temperature collected by the one temperature sensor as an ambient temperature outside the first vehicle, and in another embodiment, the at least one temperature sensor is a plurality of temperature sensors, and the window defogging device determines an average value of the temperatures collected by the plurality of temperature sensors as an ambient temperature outside the first vehicle. The window defogging device determines an average value of the ambient temperatures outside the vehicle acquired by the plurality of temperature sensors as the ambient temperature outside the first vehicle. The implementation process of the window defogging device to acquire the ambient temperature in the first vehicle may refer to S101.

S104, defogging the windows of the first vehicle in a target defogging mode.

In an alternative embodiment, the window defogging device controls the operation of the air conditioning system of the first vehicle according to the target defogging mode, and in the operation process of the air conditioning system, fog on the window of the first vehicle can be blown away, so that defogging on the window of the first vehicle is realized. In one embodiment, the window defogging device generates a control command according to a target defogging mode, and sends the control command to an air conditioning controller of the first vehicle, and the air conditioning controller controls an air conditioning system of the first vehicle to operate according to the control command so as to defog windows of the first vehicle. When the target defogging mode is a warm air defogging mode, the control command is a warm air control command, and the air conditioner controller of the first vehicle controls the air conditioner system of the first vehicle to blow warm air according to the warm air control command so as to defog the windows of the first vehicle; under the condition that the target defogging mode is a cold air defogging mode, the control instruction is a cold air control instruction, and the air conditioner controller of the first vehicle controls the air conditioner system of the first vehicle to blow cold air according to the cold air control instruction so as to defog the windows of the first vehicle.

In summary, the window defogging method provided by the embodiment of the application, after the window defogging device obtains the environmental characteristic information in the first vehicle through the sensing system of the first vehicle, whether the window of the first vehicle is fogged according to the environmental characteristic information in the first vehicle, the window defogging device determines the target defogging mode according to the environmental temperature in the first vehicle and the environmental temperature outside the first vehicle under the condition that the window of the first vehicle is fogged, and the window of the first vehicle is defogged by adopting the target defogging mode, therefore, the window defogging device determines the window defogging mode and defogs the window of the first vehicle, compared with the scheme that a driver manually defogs the window, the window defogging effect can be improved, and the driving safety of the first vehicle in the window defogging process is ensured.

Referring to fig. 2, a schematic diagram of a vehicle window defogging method according to an embodiment of the present application is shown. As shown in fig. 2, first, the window defogging device acquires an ambient temperature within the first vehicle, an ambient humidity within the first vehicle, a temperature of an inner surface of a window of the first vehicle, a fog sensing signal within the first vehicle, and an ambient temperature outside the first vehicle. Then, the window defogging device determines a target defogging mode based on an ambient temperature within the first vehicle, an ambient humidity within the first vehicle, a temperature of an inner surface of a window of the first vehicle, a fog sensing signal within the first vehicle, and an ambient temperature outside the first vehicle. And then, the window defogging device generates a control command according to the target defogging mode and sends the control command to an air conditioner controller of the first vehicle. And finally, the air conditioning controller controls the air conditioning system of the first vehicle to operate according to the control instruction so as to defog the windows of the first vehicle. Specifically, as shown in fig. 3, the window defogging device determines a target defogging mode according to an ambient temperature in a first vehicle, an ambient humidity in the first vehicle, a temperature of an inner surface of a window of the first vehicle, a fog sensing signal in the first vehicle, and an ambient temperature outside the first vehicle, and includes: the vehicle window defogging device determines the dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and the first mapping relation; the window defogging device judges whether the temperature of the inner surface of the window of the first vehicle reaches the dew point temperature in the first vehicle; the window defogging device determines whether the window of the first vehicle is fogged according to a fog sensing signal in the first vehicle when the temperature of the inner surface of the window of the first vehicle reaches a dew point temperature in the first vehicle; in the case where the window of the first vehicle is fogged, the window defogging device determines a target defogging mode based on an ambient temperature inside the first vehicle and an ambient temperature outside the first vehicle (for example, the window defogging device determines that the target defogging mode is a warm air defogging mode when the ambient temperature inside the first vehicle is greater than the ambient temperature outside the first vehicle, and determines that the target defogging mode is a cool air defogging mode when the ambient temperature inside the first vehicle is not greater than the ambient temperature outside the first vehicle). The vehicle window defogging device generates a control instruction according to the target defogging mode after determining the target defogging mode, and sends the control instruction to an air-conditioning controller of the first vehicle, and the air-conditioning controller controls an air-conditioning system of the first vehicle to operate according to the control instruction so as to defog the vehicle window of the first vehicle.

The following are device embodiments of the present application, which may be used to perform method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Referring to fig. 4, a schematic diagram of a vehicle window defogging device 400 according to an embodiment of the present application is shown. The window defogging device 400 is configured to perform the window defogging method provided by the embodiment of fig. 1, and the window defogging device 400 is disposed in a first vehicle. As shown in fig. 4, the window defogging device 400 includes, but is not limited to, an acquisition module 401, a first determination module 402, a second determination module 403, and a defogging module 404.

An acquisition module 401 for acquiring environmental characteristic information in the first vehicle through a sensing system of the first vehicle; the function implementation of the obtaining module 401 is referred to the above step S101.

A first determining module 402, configured to determine whether windows of the first vehicle are fogged according to environmental characteristic information in the first vehicle; the function implementation of the first determining module 402 refers to step S102 described above.

A second determining module 403, configured to determine, in case of window fogging of the first vehicle, a target defogging mode according to an ambient temperature inside the first vehicle and an ambient temperature outside the first vehicle; the function implementation of the second determining module 403 is referred to above in step S103.

The defogging module 404 is configured to defog windows of the first vehicle in the target defogging mode. Please refer to step S104 for the implementation of the defogging module 404.

Optionally, the sensing system includes a fog sensor, the environmental characteristic information includes a fog sensing signal, the fog sensing signal is a pulse signal, and the first determining module 402 is configured to determine whether a window of the first vehicle is fogged according to a pulse frequency of the fog sensing signal.

Optionally, the sensing system includes a temperature sensor and a humidity sensor, the environmental characteristic information includes an environmental temperature within the first vehicle, an environmental humidity within the first vehicle, and a temperature of an inner surface of a window of the first vehicle, the first determining module 402 for: determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature; a determination is made as to whether the windows of the first vehicle are fogged based on the dew point temperature within the first vehicle and the temperature of the interior surface of the windows of the first vehicle.

Optionally, the sensing system includes a temperature sensor, a humidity sensor, and a fog sensor, the environmental characteristic information includes an environmental temperature in the first vehicle, an environmental humidity in the first vehicle, a temperature of an inner surface of a window of the first vehicle, and a fog sensing signal, the fog sensing signal being a pulse signal, the first determining module 402 is configured to: determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature; in the case where the temperature of the inner surface of the window of the first vehicle reaches the dew point temperature in the first vehicle, it is determined whether the window of the first vehicle is fogged or not based on the pulse frequency of the fog sensing signal.

Optionally, the second determining module 403 is configured to: determining that the target defogging mode is a warm air defogging mode under the condition that the ambient temperature in the first vehicle is greater than the ambient temperature outside the first vehicle; and determining that the target defogging mode is a cold air defogging mode under the condition that the ambient temperature in the first vehicle is not greater than the ambient temperature outside the first vehicle.

Optionally, the defogging module 404 is configured to control an operation of an air conditioning system of the first vehicle according to the target defogging mode, so as to defog windows of the first vehicle.

To sum up, the technical scheme that this application embodiment provided, whether the door window defogging device of first vehicle is defogged according to the door window of first vehicle after the environmental characteristic information in the first vehicle is obtained through the sensing system of first vehicle, the door window defogging device of this door window defogging device is according to the environmental temperature in the first vehicle and the outside environmental temperature of first vehicle under the circumstances that the door window of first vehicle is defogged, and adopt the target defogging mode to defog the door window of first vehicle, from this, this application embodiment is defogged by door window defogging device determination door window defogging mode and defogging the door window of first vehicle, compare in the manual scheme of defogging that carries out the door window of driver, can improve door window defogging effect, ensure the driving safety of first vehicle in the door window defogging process.

The embodiment of the application provides a vehicle window defogging device, which comprises a memory and a processor; the memory is used for storing a computer program; the processor is configured to execute the computer program stored in the memory to cause the window defogging device to perform a window defogging method as provided by the above-described embodiments.

The embodiment of the application provides a vehicle, which comprises the vehicle window defogging device.

As an example, please refer to fig. 5, which illustrates a schematic diagram of a vehicle 500 provided in an embodiment of the present application. The vehicle 500 is the first vehicle described in the foregoing embodiment, and the window defogging device described in the foregoing embodiment is disposed in the vehicle 500. In general, the vehicle 500 includes: a processor 501 and a memory 502.

Processor 501 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 501 may be implemented in hardware in at least one of digital signal processing (digital signal processing, DSP), field programmable gate array (field programmable gate array, FPGA), programmable logic array (programmable logic array, PLA). The processor 501 may include, but is not limited to, a central processing unit (central processing unit, CPU). In some embodiments, the processor 501 may be integrated with an image processor (graphics processing unit, GPU) for use in connection with rendering and rendering of content to be displayed by the display screen. The processor 501 may also include an artificial intelligence (artificial intelligence, AI) processor to process computing operations related to machine learning.

Memory 502 may include one or more computer-readable storage media, which may be non-transitory. Memory 502 may also include high-speed random access memory as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 502 is used to store at least one instruction for execution by processor 501 to implement the window defogging method provided by embodiments of the present application.

In some embodiments, vehicle 500 may optionally further include: a peripheral interface 503 and at least one peripheral. The processor 501, memory 502, and peripheral interface 503 may be connected by buses or signal lines. The individual peripheral devices may be connected to the peripheral device interface 503 by buses, signal lines or circuit boards. The peripheral device may include: at least one of radio frequency circuitry 504, touch display 505, camera 506, audio circuitry 507, positioning component 508, and power supply 509.

Peripheral interface 503 may be used to connect input/output (I/O) related at least one peripheral device to processor 501 and memory 502. In some embodiments, processor 501, memory 502, and peripheral interface 503 are integrated on the same chip or circuit board; in some embodiments, either or both of the processor 501, memory 502, and peripheral interface 503 may be implemented on separate chips or circuit boards, which is not limited in this embodiment.

The radio frequency circuit 504 is used to receive and transmit Radio Frequency (RF) signals, also known as electromagnetic signals. The radio frequency circuitry 504 communicates with a communication network and other communication devices via electromagnetic signals. The radio frequency circuit 504 converts an electrical signal into an electromagnetic signal for transmission, or converts a received electromagnetic signal into an electrical signal. Optionally, the radio frequency circuit 504 includes: an antenna system, an RF transceiver, one or more amplifiers, tuners, oscillators, digital signal processors, codec chipsets, and so forth. The radio frequency circuitry 504 may communicate with other devices via at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: the world wide web, metropolitan area network, intranet, various generations of mobile communication networks (2G, 3G, 4G, and 5G), and wireless local area network, to which embodiments of the present application are not limited.

The display 505 is used to display a User Interface (UI). The UI may include graphics, text, icons, video, and any combination thereof. When the display 505 is a touch display, the display 505 also has the ability to collect touch signals at or above the surface of the display 505. The touch signal may be input as a control signal to the processor 501 for processing. At this time, the display 505 may also be used to provide virtual buttons and/or virtual keyboards, also referred to as soft buttons and/or soft keyboards. In some embodiments, the display 505 may be a flexible display. Even more, the display 505 may be arranged in a non-rectangular irregular pattern, i.e., a shaped screen. The display screen 505 may be a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (OLED) display screen, or the like.

The camera assembly 506 is used to capture images or video.

The audio circuitry 507 may include a microphone and a speaker. The microphone is used for collecting sound waves of users and environments, converting the sound waves into electric signals, and inputting the electric signals to the processor 501 for processing, or inputting the electric signals to the radio frequency circuit 504 for voice communication. For the purpose of stereo acquisition or noise reduction, a plurality of microphones can be respectively arranged at different parts of the vehicle. The microphone may also be an array microphone or an omni-directional pickup microphone. The speaker is used to convert electrical signals from the processor 501 or the radio frequency circuit 504 into sound waves. The speaker may be a conventional thin film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, not only the electric signal can be converted into a sound wave audible to humans, but also the electric signal can be converted into a sound wave inaudible to humans for ranging and other purposes.

The locating component 508 is used to locate the geographic location of the vehicle 500 to enable navigation or location-based services (location based service, LBS). The positioning component 508 may be a global positioning system (global positioning system, GPS), beidou system or galileo system based positioning component.

The power supply 509 is used to power the various components in the vehicle. The power supply 509 may be an alternating current, a direct current, a disposable battery, or a rechargeable battery. When the power supply 509 comprises a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil.

In some embodiments, the vehicle 500 further includes one or more sensors 510. The one or more sensors 510 include, but are not limited to: a temperature sensor 511, a humidity sensor 512, a mist sensor 513, a fingerprint sensor 514, an optical sensor 515, and a proximity sensor 516. There may be one or more of each type of sensor, for example, the vehicle 500 includes a plurality of temperature sensors 511.

By way of example, the temperature sensor 511 is used to collect an ambient temperature inside the vehicle 500, a temperature of an inner surface of a window of the vehicle 500, and an ambient temperature outside the vehicle 500, the humidity sensor 512 is used to collect an ambient humidity inside the vehicle 500, and the mist sensor 513 is used to collect a mist sensing signal inside the vehicle 500; the processor 501 determines whether the window of the vehicle 500 is fogged based on the ambient temperature inside the vehicle 500 collected by the temperature sensor 511, the ambient temperature outside the vehicle 500, the temperature of the inner surface of the window of the vehicle 500, the ambient humidity inside the vehicle 500 collected by the humidity sensor 512, the fog sensing signal collected by the fog sensor 513, and the like.

The fingerprint sensor 514 is used for collecting the fingerprint of the user, and the processor 501 identifies the identity of the user according to the fingerprint collected by the fingerprint sensor 514, or the fingerprint sensor 514 identifies the identity of the user according to the collected fingerprint. Upon recognizing that the user's identity is a trusted identity, the user is authorized by the processor 501 to perform relevant sensitive operations including unlocking the screen, viewing encrypted information, downloading software, paying for and changing settings, etc.

The optical sensor 515 is used to collect the ambient light intensity. In one embodiment, the processor 501 may control the display brightness of the touch screen 505 based on the ambient light intensity collected by the optical sensor 515. Specifically, when the intensity of the ambient light is high, the display brightness of the touch display screen 505 is turned up; when the ambient light intensity is low, the display brightness of the touch display screen 505 is turned down. In another embodiment, the processor 501 may also dynamically adjust the shooting parameters of the camera module 506 according to the ambient light intensity collected by the optical sensor 515.

The proximity sensor 516, also referred to as a distance sensor, is typically disposed on the front panel of the display screen 505 of the vehicle 500. The proximity sensor 516 is used to capture the distance between the user and the display 505. In one embodiment, when the proximity sensor 514 detects that the distance between the user and the display screen 505 gradually decreases, the processor 501 controls the touch display screen 505 to switch from the bright screen state to the off screen state; when the proximity sensor 516 detects that the distance between the user and the display screen 505 gradually increases, the processor 501 controls the touch display screen 505 to switch from the off-screen state to the on-screen state.

Those skilled in the art will appreciate that the configuration shown in fig. 5 is not limiting of the vehicle 500 and that the vehicle 500 may include more or fewer components than shown, or certain components may be combined, or a different arrangement of components may be employed.

Optionally, the processor 501 and the memory 502 in the vehicle 500 constitute a window defogging device.

Embodiments of the present application provide a computer readable storage medium having a computer program stored therein, which when executed (e.g., by a window defogging device, one or more processors, etc.) implements all or part of the steps of a window defogging method as provided by the above embodiments.

Embodiments of the present application provide a computer program product comprising a program or code which, when executed (e.g. by a window defogging device, one or more processors, etc.), implements all or part of the steps of a window defogging method as provided by the embodiments described above.

It should be understood that the term "at least one" in this application refers to one or more, and "a plurality" refers to two or more. The term "and/or" in this application is merely an association relation describing an associated object, meaning that three relations may exist, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, for purposes of clarity of description, the words "first," "second," "third," and the like are used throughout this application to distinguish between identical or similar items that have substantially the same function and effect. Those skilled in the art will appreciate that the words "first," "second," "third," etc. do not limit the number and order of execution.

Different types of embodiments, such as a method embodiment and a device embodiment, provided in the embodiments of the present application may be mutually referred to, and the embodiments of the present application are not limited to this. The sequence of the operations of the method embodiment provided in the embodiment of the present application can be appropriately adjusted, the operations can also be increased or decreased according to the situation, and any method that is easily conceivable to be changed by a person skilled in the art within the technical scope of the present application is covered in the protection scope of the present application, so that no further description is provided.

In the corresponding embodiments provided in the present application, it should be understood that the disclosed apparatus and the like may be implemented by other structural manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules is merely a logical division of functionality, and there may be additional divisions of actual implementation, e.g., multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not performed.

The modules illustrated as separate components may or may not be physically separate, and the components described as modules may or may not be physical modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

While the invention has been described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made without departing from the spirit and scope of the invention. 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 window, the method comprising:

acquiring environmental characteristic information in a first vehicle through a sensing system of the first vehicle;

determining whether windows of the first vehicle are fogged according to the environmental characteristic information in the first vehicle;

determining a target defogging mode according to the ambient temperature in the first vehicle and the ambient temperature outside the first vehicle under the condition that the windows of the first vehicle are fogged;

and defogging the window of the first vehicle by adopting the target defogging mode.

2. The method of claim 1, wherein the sensing system comprises a fog sensor and the environmental characteristic information comprises a fog sensing signal, the fog sensing signal being a pulse signal, the determining whether a window of the first vehicle is fogged based on the environmental characteristic information within the first vehicle comprising:

And determining whether the window of the first vehicle is fogged according to the pulse frequency of the fog sensing signal.

3. The method of claim 1, wherein the sensing system includes a temperature sensor and a humidity sensor, the environmental characteristic information includes an ambient temperature within the first vehicle, an ambient humidity within the first vehicle, and a temperature of an interior surface of a window of the first vehicle, and the determining whether the window of the first vehicle is fogged based on the environmental characteristic information within the first vehicle includes:

determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature;

determining whether a window of the first vehicle is fogged based on a dew point temperature within the first vehicle and a temperature of an interior surface of the window of the first vehicle.

4. The method of claim 1, wherein the sensing system comprises a temperature sensor, a humidity sensor, and a fog sensor, the environmental characteristic information comprises an environmental temperature within the first vehicle, an environmental humidity within the first vehicle, a temperature of an interior surface of a window of the first vehicle, and a fog sensing signal, the fog sensing signal being a pulse signal, the determining whether the window of the first vehicle is fogged based on the environmental characteristic information within the first vehicle comprising:

Determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature;

and determining whether the window of the first vehicle is fogged according to the pulse frequency of the fog sensing signal under the condition that the temperature of the inner surface of the window of the first vehicle reaches the dew point temperature in the first vehicle.

5. The method of any one of claims 1 to 4, wherein the determining a target defogging mode from an ambient temperature within the first vehicle and an ambient temperature outside the first vehicle comprises:

determining that the target defogging mode is a warm air defogging mode under the condition that the ambient temperature in the first vehicle is greater than the ambient temperature outside the first vehicle;

and determining that the target defogging mode is a cold air defogging mode under the condition that the ambient temperature in the first vehicle is not greater than the ambient temperature outside the first vehicle.

6. A vehicle window defogging device, the device comprising:

the acquisition module is used for acquiring the environmental characteristic information in the first vehicle through a sensing system of the first vehicle;

A first determining module for determining whether windows of the first vehicle are fogged according to environmental characteristic information in the first vehicle;

the second determining module is used for determining a target defogging mode according to the ambient temperature in the first vehicle and the ambient temperature outside the first vehicle under the condition that the windows of the first vehicle are fogged;

and the defogging module is used for defogging the window of the first vehicle in the target defogging mode.

7. The apparatus of claim 6, wherein the sensing system comprises a fog sensor, the environmental characteristic information comprises a fog sensing signal, the fog sensing signal is a pulse signal, and the first determination module is configured to determine whether a window of the first vehicle is fogged based on a pulse frequency of the fog sensing signal.

8. The apparatus of claim 6, wherein the sensing system comprises a temperature sensor and a humidity sensor, the environmental characteristic information comprises an ambient temperature within the first vehicle, an ambient humidity within the first vehicle, and a temperature of an inner surface of a window of the first vehicle, the first determining module to:

Determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature;

determining whether a window of the first vehicle is fogged based on a dew point temperature within the first vehicle and a temperature of an interior surface of the window of the first vehicle.

9. The apparatus of claim 6, wherein the sensing system comprises a temperature sensor, a humidity sensor, and a mist sensor, the environmental characteristic information comprises an environmental temperature within the first vehicle, an environmental humidity within the first vehicle, a temperature of an inner surface of a window of the first vehicle, and a mist sensing signal, the mist sensing signal being a pulse signal, the first determining module to:

determining a dew point temperature in the first vehicle according to the ambient temperature in the first vehicle, the ambient humidity in the first vehicle and a first mapping relation, wherein the first mapping relation is used for recording the mapping relation of the ambient temperature, the ambient humidity and the dew point temperature;

And determining whether the window of the first vehicle is fogged according to the pulse frequency of the fog sensing signal under the condition that the temperature of the inner surface of the window of the first vehicle reaches the dew point temperature in the first vehicle.

10. The apparatus according to any one of claims 6 to 9, wherein the second determining module is configured to:

determining that the target defogging mode is a warm air defogging mode under the condition that the ambient temperature in the first vehicle is greater than the ambient temperature outside the first vehicle;

and determining that the target defogging mode is a cold air defogging mode under the condition that the ambient temperature in the first vehicle is not greater than the ambient temperature outside the first vehicle.