Vehicle automatic defrosting and defogging control method, vehicle and computer readable storage medium

Abstract

The application relates to the technical field of intelligent driving control of an automobile, and discloses a control method for automatic defrosting and demisting of a vehicle, a vehicle and a computer readable storage medium, the method comprising the following steps: in response to an automatic defrosting and demisting instruction received by a target vehicle, emitting infrared light to the window glass of the target vehicle; recycling the infrared light and determining a light signal feedback value based on the recycled infrared light, wherein the light signal feedback value at least comprises a light signal intensity feedback value and a light signal quantity preset interval feedback value; if it is determined that the window glass of the target vehicle is frosted or fogged based on the size relationship between the current light signal feedback value and a light signal preset interval, starting defrosting or demisting of the target vehicle. The technical scheme of the application can solve the problem of frosting and fogging of the window glass in the prior art.

Description

Technical Field

[0001] This application relates to the field of intelligent driving control technology for automobiles, specifically to a control method for automatic defrosting and defogging of vehicles, a vehicle, and a computer-readable storage medium. Background Technology

[0002] With the increasing popularity of automobiles, more and more cars are entering households. Especially with the rise of "automotive intelligence," more and more new technologies are being applied to the automotive field. Although cars offer increasingly more features, there are still no effective solutions for the most common driving safety problem: fogging of the windshield and driver and passenger windows. Fogging windows during driving can cause blurred vision, loss of direction, and easily lead to traffic accidents, seriously endangering lives and property. Existing solutions include spraying special defogging agents, opening windows to create airflow, and manually activating the automatic air conditioning's defrosting function while the vehicle is in motion. However, these methods have drawbacks such as high cost, short duration of use, limited applicability, and the need for distraction when operating the automatic air conditioning, increasing the risk of traffic accidents. Summary of the Invention

[0003] In view of the above problems, this application provides a control method for automatic defrosting and defogging of vehicles, a vehicle, and a computer-readable storage medium to solve the problem of frosting and fogging of vehicle windows in the prior art.

[0004] According to one aspect of the embodiments of this application, a control method for automatic defrosting and defogging of a vehicle is provided. The method includes: emitting infrared light to the window glass of the target vehicle in response to an automatic defrosting and defogging command received by the target vehicle; recovering the infrared light and determining a light signal feedback value based on the recovered infrared light, the light signal feedback value including at least a light signal intensity feedback value and a preset range feedback value for the number of light signals; if it is determined that the window glass of the target vehicle is frosted or fogged based on the relationship between the current light signal feedback value and the preset range of light signals, then controlling the target vehicle to start defrosting or defogging.

[0005] In one optional approach, the step of controlling the target vehicle to begin defrosting or defogging if the window glass of the target vehicle is determined to be frosted or fogged based on the relationship between the current light signal feedback value and a preset range of light signal values ​​includes: determining the relationship between the current light signal quantity feedback value and a preset range of light signal quantity within the preset range of light signal values; wherein the preset range of light signal quantity is determined based on the amount of infrared light reflected when the window glass is frosted, fogged, or normal; if it is determined to be within the preset range of light signal quantity, then determining the relationship between the current light signal intensity feedback value and a preset range of light signal intensity within the preset range of light signal values; wherein the preset range of light signal intensity is determined based on the intensity of infrared light reflected when the window glass is frosted, fogged, or normal; if the current light signal intensity feedback value is within the preset range of light signal intensity, then determining that the outer side of the window glass is frosted or fogged; and controlling the target vehicle to begin defrosting and / or defogging the outer side of the window glass.

[0006] In one optional approach, the step of determining whether the outer side of the vehicle window is frosted or fogged if the current light signal intensity feedback value is within the preset range of light signal intensity includes: determining the relationship between the current light signal quantity feedback value and the preset range of light signal quantity within the preset range of light signal intensity; wherein the preset range of light signal quantity is determined based on the amount of infrared light reflected when the vehicle window is frosted, fogged, or normal; if it is determined to be within the preset range of light signal quantity, then determining the relationship between the current light signal intensity feedback value and the preset range of light signal intensity within the preset range of light signal intensity; wherein the preset range of light signal intensity is determined based on the magnitude of the intensity of infrared light reflected when the vehicle window is frosted, fogged, or normal; if the current light signal intensity feedback value is within the preset range of light signal intensity, then determining that the outer side of the vehicle window is frosted or fogged; and controlling the target vehicle to begin defrosting and / or fogging the outer side of the vehicle window.

[0007] In one optional approach, the step of determining whether the outer side of the vehicle window is frosted or fogged if the current light signal intensity feedback value is within the preset light signal intensity range includes: determining a preset frost range and a preset fog range within the preset light signal intensity range based on the magnitude of the reflection intensity of infrared light when the vehicle window is frosted, fogged, or normal; wherein the maximum value in the preset fog range is less than the minimum value in the preset frost range; determining whether the current light signal intensity feedback value is within the preset frost range; if the current light signal intensity feedback value is within the preset frost range, controlling the target vehicle to start defrosting the outer side of the vehicle window; if the current light signal intensity feedback value is outside the preset frost range, determining whether the current light signal intensity feedback value is within the preset fog range; if the current light signal intensity feedback value is within the preset fog range, controlling the target vehicle to start defrosting the outer side of the vehicle window.

[0008] In one optional approach, the step of controlling the target vehicle to defrost the windshield using a first defrosting strategy includes: controlling the target vehicle to spray windshield washer fluid onto the windshield and turning on the target vehicle's air conditioning to deliver warm air to the windshield at maximum fan speed; determining the relationship between the current light signal intensity feedback value and the preset frost interval; if it is determined that the current light signal intensity feedback value is within the preset frost interval, then continuing to turn on the target vehicle's air conditioning to deliver warm air to the windshield at maximum fan speed; if it is determined that the current light signal intensity feedback value is outside the preset frost interval, then controlling the target vehicle's windshield wipers to operate to remove the frost on the windshield.

[0009] In one optional approach, the step of controlling the target vehicle to employ a second defrosting strategy, different from the first defrosting strategy, to defrost the door and window glass includes: controlling the target vehicle's air conditioning to deliver warm air to the door and window glass at maximum fan speed; determining the relationship between the current light signal intensity feedback value and the preset defrosting interval; if it is determined that the current light signal intensity feedback value is within the preset defrosting interval, then continuing to control the target vehicle's air conditioning to deliver warm air to the door and window glass at maximum fan speed; if it is determined that the current light signal intensity feedback value is outside the preset defrosting interval; based on the defrosting of the window glass... The intensity of infrared light reflected during frost, fog, or normal conditions determines a preset dry zone within a preset range of light signal intensity. The minimum value of the preset dry zone is greater than the maximum value in the preset fog zone, and the maximum value of the preset dry zone is less than the minimum value in the preset frost zone. The relationship between the current light signal intensity feedback value and the preset dry zone is determined. If the current light signal intensity feedback value is determined to be within the preset dry zone, the optimal airflow speed of the air conditioner is determined based on the magnitude of the current light signal intensity feedback value, and warm air continues to be delivered to the vehicle door and window glass at the optimal airflow speed.

[0010] In one optional approach, the step of controlling the target vehicle to begin defogging the outer side of the window glass if the current light signal intensity feedback value is within the preset fog range includes: if the frost location of the window glass is determined to be the windshield based on the propagation path of the corresponding recovered infrared light, then controlling the target vehicle to use a first defogging strategy to defog the windshield; if the frost location of the window glass is determined to be a door window based on the propagation path of the corresponding recovered infrared light, then controlling the target vehicle to use a second defogging strategy different from the first defogging strategy to defog the door window.

[0011] In one optional approach, the step of controlling the target vehicle to begin defrosting or defogging if it is determined that the target vehicle's window glass is frosted or fogged based on the relationship between the current optical signal feedback value and a preset range of optical signals includes: if it is determined that the current optical signal quantity feedback value is less than the minimum value of the preset range of optical signal quantity; acquiring the interior temperature and exterior temperature of the target vehicle, and determining the relationship between the interior temperature and the exterior temperature; if it is determined that the interior temperature is less than or equal to the exterior temperature, controlling the target vehicle to turn on the air conditioning and deliver warm air to the window glass; if it is determined that the interior temperature is greater than the exterior temperature, controlling the target vehicle to turn on the air conditioning and deliver cold air to the window glass.

[0012] According to another aspect of the embodiments of this application, a vehicle is provided, including a memory and a processor, wherein the processor is configured to execute program instructions stored in the memory to implement the above-described automatic defrosting and defogging control method for the vehicle.

[0013] According to another aspect of the embodiments of this application, a computer-readable storage medium is provided, on which program instructions are stored, which, when executed by a processor, implement the above-described control method for automatic vehicle defrosting and defogging.

[0014] This application embodiment, upon receiving an automatic defrosting / defogging command from the target vehicle, first emits infrared light towards the vehicle's window glass, then recovers the infrared light, and determines a light signal feedback value based on the recovered infrared light. This light signal feedback value includes at least a light signal intensity feedback value and a preset range feedback value for the number of light signals. Next, by comparing the corresponding light signal intensity feedback value and preset range feedback value for the number of light signals with a preset range of light signals, the frosting or fogging of the target vehicle's window glass can be basically determined. Once frosting or fogging is determined, the target vehicle can be automatically controlled to begin defrosting or defogging. Therefore, this application can automatically defrost or defog when the vehicle's window glass is frosted or fogged.

[0015] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0016] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0017] Figure 1 A flowchart illustrating an exemplary embodiment of the vehicle automatic defrosting and defogging control method of this application is shown.

[0018] Figure 2 The diagram illustrates the logic relationship for determining fogging on the inside and outside of the vehicle window in the automatic defrosting and defogging control method of this application.

[0019] Figure 3 The diagram illustrates the logic relationship for determining frost or fog on the outside of the vehicle window in the automatic defrosting and defogging control method of this application.

[0020] Figure 4 The diagram illustrates the logic relationship for defrosting the exterior of the vehicle window in the automatic defrosting and defogging control method of this application.

[0021] Figure 5 The diagram illustrates the logic relationship for defogging the exterior of the vehicle window in the automatic defrosting and defogging control method of this application.

[0022] Figure 6 The diagram illustrates the logic relationship for defogging the inner side of the vehicle window in the automatic defrosting and defogging control method of this application.

[0023] Figure 7 A structural schematic diagram of the vehicle of this application is shown. Detailed Implementation

[0024] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0025] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0026] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0027] In this application, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0028] Figure 1 A flowchart illustrating an exemplary embodiment of the vehicle automatic defrosting and defogging control method of this application is shown. This method can be executed by the vehicle's automatic defrosting and defogging system or by a server; this embodiment is described with the vehicle's automatic defrosting and defogging system as the executing entity. Figure 1 As shown, the method includes the following steps:

[0029] S1: When the vehicle is started and the automatic defrosting and defogging command is activated, the automatic defrosting and defogging system responds to the automatic defrosting and defogging command received by the target vehicle and controls the infrared transmitter of the infrared reflection detection module in the automatic defrosting and defogging system to emit infrared light towards the window glass of the target vehicle.

[0030] S2: The infrared receiver of the infrared reflection detection module of the target vehicle recovers the infrared light emitted by the infrared transmitter and transmits the infrared light received by the infrared receiver back to the automatic defrost and defogging controller for analysis, so as to determine the optical signal feedback value based on the recovered infrared light. The optical signal feedback value includes at least the optical signal intensity feedback value and the optical signal quantity feedback value within a preset range.

[0031] S3: If it is determined that the target vehicle's window glass is frosted or fogged based on the relationship between the current optical signal feedback value and the preset range of the optical signal, then control the target vehicle to start defrosting or defogging.

[0032] It should be understood that when the target vehicle receives a command to activate automatic defrosting and defogging, it first emits infrared light towards the vehicle's window, then recovers the infrared light, and determines a light signal feedback value based on the recovered infrared light. This light signal feedback value includes at least a light signal intensity feedback value and a preset range feedback value for the number of light signals. Next, by comparing the corresponding light signal intensity feedback value and preset range feedback value for the number of light signals with the preset range of light signals, the frosting or fogging of the target vehicle's window can be determined. Once frosting or fogging is confirmed, the vehicle can be automatically controlled to begin defrosting or defogging. Therefore, this application enables automatic defrosting or defogging when the vehicle's window is frosted or fogged.

[0033] In one alternative approach, since frost or fogging of the car window glass can be divided into frost or fogging on the inside of the car window glass and frost or fogging on the outside of the car window glass, the automatic defrosting or defogging methods for frost or fogging on the inside and outside of the car window glass are different.

[0034] Figure 2 This diagram illustrates the logic relationship for determining fogging on the inside and outside of the vehicle window in the automatic defrosting and defogging control method of this application. (Combined with...) Figure 2 As shown, in the control method for automatic defrosting and defogging of vehicles, if the window glass of the target vehicle is frosted or fogged based on the relationship between the current light signal feedback value and the preset range of light signals, then the step of controlling the target vehicle to start defrosting or defogging also includes: judging the relationship between the current light signal quantity feedback value and the preset range of light signal quantity in the preset range of light signals.

[0035] It should be understood that because fogging occurs on the inside of the car window, the fog (tiny water droplets) creates a convex lens effect, refracting and distorting the reflection path of infrared light signals. This prevents the infrared receiver from correctly receiving all the infrared light, making it impossible to judge the severity of the fogging based solely on the light signal intensity feedback value. However, the degree of refraction or distortion of the infrared light can be characterized by the number of infrared rays received, indirectly indicating the severity of the fogging on the inside of the car window. Specifically: If fogging occurs on the inside of the car window, infrared light first comes into contact with the fog (tiny water droplets) on the inside of the window. Due to the refraction of infrared light by the fog (tiny water droplets) on the inside of the window, the refraction of the infrared light changes the predetermined reflection path of the infrared light, causing the infrared receiver to fail to correctly receive the infrared light, resulting in the number of correctly received infrared rays being lower than the preset range of the light signal quantity. If fogging or frost occurs on the outside of the car window, infrared light first comes into contact with the window glass and can then be reflected back through the window glass. In this case, the number of infrared rays correctly received by the infrared receiver is equal to the preset range of the light signal quantity.

[0036] In this embodiment, if the current optical signal quantity feedback value is determined to be within the preset range of optical signal quantity, fogging on the inner side of the window glass is ruled out. At this time, the outer side of the window glass may exhibit fogging, frost, or normal operation; therefore, it is necessary to further determine whether fogging or frost has formed on the outer side of the window glass. The minimum value of the preset range of optical signal quantity can be the minimum number of infrared rays emitted onto a dry window glass, and the maximum value of the preset range of optical signal quantity can be the maximum number of infrared rays emitted onto a dry window glass.

[0037] Figure 2 This diagram illustrates the logic relationship for determining frost or fogging on the outside of the vehicle window in the automatic defrosting and defogging control method of this application. (Combined with...) Figure 2 As shown, the control method for automatic defrosting and defogging of vehicles also includes: determining the relationship between the current light signal intensity feedback value and the preset range of light signal intensity in the preset range of light signal intensity; if the current light signal intensity feedback value is within the preset range of light signal intensity, then determining that the outside of the window glass is frosted or fogged, and then controlling the target vehicle to start defrosting and / or fogging the outside of the window glass.

[0038] It should be understood that the reflectivity of water is relatively low, approximately between 5% and 10%; that of transparent, colorless glass (including car windows) is approximately between 8% and 10%; and that of snow and ice is very high, almost equivalent to specular reflection, at around 80%. Therefore, the following inequality can be derived: Infrared reflected light signal intensity at maximum fog < Infrared reflected light signal intensity at minimum fog < Infrared reflected light signal intensity during dryness < Infrared reflected light signal intensity at minimum frost < Infrared reflected light signal intensity at maximum frost. Therefore, a preset range of light signal intensity can be determined based on the aforementioned two inequalities to determine whether the current light signal feedback value is within the preset range of light signal intensity, thereby determining whether the outside of the car window glass is frosted or fogged. Specifically, when the preset range of light signal intensity is a continuous range, the minimum value is the infrared reflected light signal intensity at the maximum fogging; the maximum value is the infrared reflected light signal intensity at the maximum frost. When the preset range of light signal intensity consists of two discontinuous ranges, the minimum value of one of the discontinuous ranges is the infrared reflected light signal intensity at the maximum fogging, and the maximum value is the infrared reflected light signal intensity at the minimum fogging; the minimum value of the other range is the infrared reflected light signal intensity at the minimum frost, and the maximum value is the infrared reflected light signal intensity at the maximum frost.

[0039] In one alternative approach, since the automatic defrosting or defogging methods for frost or fogging on the outside of the car window differ, it is necessary to further determine whether the outside of the car window is frosted or fogged after confirming that frost or fogging has occurred.

[0040] Figure 3 This diagram illustrates the logic relationship for determining frost or fogging on the outside of the vehicle window in the automatic defrosting and defogging control method of this application. (Combined with...) Figure 3 As shown, the control method for automatic defrosting and defogging of vehicles also includes: determining whether the current light signal intensity feedback value is within the preset defrosting range of the preset light signal intensity range; if the current light signal intensity feedback value is within the preset defrosting range, then controlling the target vehicle to start defrosting the outside of the window glass.

[0041] For example, the lower limit of the preset frost range is the infrared reflected light signal intensity when frost is minimal; the upper limit is the infrared reflected light signal intensity when frost is maximum.

[0042] It should be understood that if the current light signal intensity feedback value satisfies the following condition: minimum frost infrared reflected light signal intensity < current light signal intensity feedback value < maximum frost infrared reflected light signal intensity, then it is determined that frost has formed on the outside of the car window glass, and the target vehicle needs to be controlled to start defrosting the outside of the car window glass.

[0043] In one alternative approach, since vehicle windows are divided into windshields and door windows, and the defrosting methods for windshields and door windows differ, after determining that frost is forming on the outside of the vehicle window, it is necessary to further determine whether the frost is forming on the windshield or the door window.

[0044] Figure 4 The diagram illustrates the logic relationship for defrosting the exterior of the vehicle windows in the automatic defrosting and defogging control method of this application. (Combined with...) Figure 4 As shown, in the control method for automatic defrosting and defogging of vehicles, the step of controlling the target vehicle to start defrosting the outer side of the window glass further includes: determining the propagation path of the recovered infrared light through infrared reflection detection; if the propagation path of the recovered infrared light determines that the frost position of the window glass is the windshield, then the target vehicle is controlled to adopt the first defrosting strategy to defrost the windshield.

[0045] It should be understood that "the corresponding infrared light" in "determining the frost location of the windshield based on the propagation path of the corresponding recovered infrared light" refers to the recovered infrared light that satisfies the current light signal intensity feedback value being within the preset frost range.

[0046] Furthermore, the step of controlling the target vehicle to defrost the windshield using the first defrosting strategy includes: controlling the target vehicle to spray windshield washer fluid onto the windshield to form an ice-water mixture on the windshield, thereby accelerating the melting of the frost.

[0047] Furthermore, the steps of controlling the target vehicle to defrost the windshield using the first defrosting strategy also include: opening the windshield defrosting duct valve and turning on the target vehicle's air conditioning to heat at maximum power, thereby causing the air conditioning to deliver warm air to the windshield at maximum wind speed.

[0048] Furthermore, the steps of controlling the target vehicle to defrost the windshield using the first defrosting strategy also include: collecting the windshield condition in real time through the infrared reflection detection module to determine the current light signal intensity feedback value, and then determining the defrosting status of the windshield by judging the relationship between the current light signal intensity feedback value and the preset frost range, until the frost on the windshield melts into water, that is, when the current light signal intensity feedback value is outside the preset frost range, and then turning off the air conditioner.

[0049] It should be understood that if the current light signal intensity feedback value is determined to be within the preset frost range, it means that there is still frost on the windshield, and therefore, it is necessary to continue defrosting the windshield.

[0050] Furthermore, since the frost on the windshield melts into water, the water must be removed before defrosting can be completed. Therefore, the step of controlling the target vehicle to use the first defrosting strategy to defrost the windshield also includes: if it is determined that the current light signal intensity feedback value is outside the preset frost range, then controlling the windshield wipers of the target vehicle to work to remove the frost water on the windshield.

[0051] For example, once it is determined that the frost on the windshield has melted into water, the windshield wipers of the target vehicle can be controlled to operate 3-5 times to remove the water from the windshield.

[0052] In one alternative approach, the step of controlling the target vehicle to begin defrosting the outer side of the window glass in the automatic defrosting and defogging control method further includes: determining the propagation path of the recovered infrared light through infrared reflection detection; if the propagation path of the recovered infrared light determines that the frost location of the window glass is a door window, then the target vehicle is controlled to adopt a second defrosting strategy different from the first defrosting strategy to defrost the door window glass. In this embodiment, by using a corresponding defrosting strategy based on the different frost locations, defrosting can be performed more effectively and with greater applicability.

[0053] In one alternative approach, the steps of controlling the target vehicle to use a second defrosting strategy, which is different from the first defrosting strategy, to defrost the door and window glass include: opening the door and window glass defrosting air duct valves and turning on the target vehicle's air conditioning to heat at maximum power, thereby causing the air conditioning to deliver warm air to the front door and window glass at maximum fan speed.

[0054] Furthermore, the step of controlling the target vehicle to use a second defrosting strategy, which is different from the first defrosting strategy, to defrost the door and window glass also includes: collecting the condition of the windshield in real time through an infrared reflection detection module to determine the current light signal intensity feedback value, and then determining the defrosting status of the door and window glass by judging the relationship between the current light signal intensity feedback value and the preset frost range, until the frost on the door and window glass melts into water, that is, when the current light signal intensity feedback value is outside the preset frost range, and then turning off the air conditioner.

[0055] It should be understood that if the current light signal intensity feedback value is determined to be within the preset frost range, it indicates that frost still exists on the car door and window glass. Therefore, it is necessary to continue defrosting the car door and window glass. At this time, the air conditioning of the target vehicle should continue to be controlled to deliver warm air to the car door and window glass at maximum fan speed.

[0056] In one alternative approach, the step of controlling the target vehicle to use a second defrosting strategy, which is different from the first defrosting strategy, to defrost the door and window glass further includes: if it is determined that the current light signal intensity feedback value is outside the preset defrosting range; then determining the size relationship between the current light signal intensity feedback value and the preset dry range in the preset light signal range.

[0057] For example, the preset drying range can be the intensity value of the infrared reflected light signal during drying.

[0058] It should be understood that even after confirming that the frost on the car door and window glass has melted into water (i.e., the current light signal intensity feedback value is outside the preset frost range), it is still necessary to confirm whether water is present on the car door and window glass. Therefore, it is necessary to determine the relationship between the current light signal intensity feedback value and the preset dry range within the preset light signal range to ascertain whether water is present on the car door and window glass.

[0059] In this embodiment, if the current light signal intensity feedback value is determined to be outside the preset dry range, it indicates that there is water in the car door and window glass. Therefore, the optimal air conditioning speed can be determined based on the current light signal intensity feedback value, and warm air can continue to be delivered to the car door and window glass at the optimal air speed until the car door and window glass is dry. That is, the defrosting of the car door and window glass is completed only when the current light signal intensity feedback value is equal to the preset dry range.

[0060] For example, if the current light signal intensity feedback value is less than the value 'a', the optimal fan speed for controlling the air conditioner is a level 1 fan speed (below level 2) to deliver warm air to the car door windows; if the current light signal intensity feedback value is greater than the value 'a', the optimal fan speed for controlling the air conditioner is a level 3 fan speed (a above level 2) to deliver warm air to the car door windows; if the current light signal intensity feedback value is equal to the value 'a', the optimal fan speed for controlling the air conditioner is a level 2 fan speed to deliver warm air to the car door windows.

[0061] It should be understood that the air conditioning fan speed in this article can be determined by the current light signal intensity feedback value, which can achieve energy saving and dynamically adjust the fan speed to ensure the noise level inside the vehicle.

[0062] In one alternative approach, in the control method for automatic vehicle defrosting and defogging, if the current light signal intensity feedback value is outside the preset frost range, the possibility of frost formation on the vehicle window is ruled out. Therefore, it is necessary to determine the possibility of fogging on the vehicle window.

[0063] Figure 5 The diagram illustrates the logic relationship for defogging the exterior of the vehicle windows in the automatic defrosting and defogging control method of this application. (Combined with...) Figure 5 As shown, in the control method for automatic defrosting and defogging of a vehicle, the step of determining whether the window glass of the target vehicle is frosted or fogged based on the relationship between the current light signal feedback value and the preset range of the light signal intensity, and then controlling the target vehicle to start defrosting or defogging, further includes: determining whether the current light signal intensity feedback value is within the preset fog range of the preset range of light signal intensity; if the current light signal intensity feedback value is within the preset fog range, then controlling the target vehicle to start defogging on the outside of the window glass.

[0064] For example, the lower limit of the preset fog range is the infrared reflected light signal intensity when fog is at its maximum; the upper limit is the infrared reflected light signal intensity when fog is at its minimum.

[0065] It should be understood that since fogging occurs on the outer side of the car window, the reflective surface formed by the fog (tiny water droplets) and the window glass exhibits different light signal intensities depending on the reflectivity of the material. The denser the fog (tiny water droplets), the lower the intensity of the infrared reflected light signal. Therefore, the severity of fogging on the outer side of the car window can be characterized by the intensity of the received infrared reflected light signal. Specifically: if the current light signal intensity feedback value satisfies the following condition: maximum fogging infrared reflected light signal intensity < current light signal intensity feedback value < minimum fogging infrared reflected light signal intensity, then fogging is determined to occur on the outer side of the car window, and the target vehicle needs to be controlled to begin defogging on the outer side of the window.

[0066] In one alternative approach, if the current light signal intensity feedback value is within a preset fog range, the step of controlling the target vehicle to start defogging on the outside of the window glass includes: if the frost location of the window glass is determined to be the windshield based on the propagation path of the corresponding recovered infrared light, then controlling the target vehicle to adopt a first defogging strategy to defog the windshield.

[0067] For example, controlling the target vehicle to use the first defogging strategy to defog the windshield includes: directly controlling the windshield wipers of the target vehicle through the wiper controller to wipe away the fog on the windshield until the current light signal intensity feedback value is outside the preset fog range, thus completing the defogging of the windshield.

[0068] Furthermore, if the location of frost on the vehicle window is determined to be the door window based on the propagation path of the corresponding recovered infrared light, the target vehicle is controlled to adopt a second defogging strategy that is different from the first defogging strategy to defog the door window, so as to defog in a targeted manner based on the location of frost.

[0069] For example, the steps of controlling the target vehicle to use the second defogging strategy to defog the door and window glass include: controlling the air conditioner of the target vehicle to first deliver warm air to the door and window glass at the maximum fan speed, and then adjusting the fan speed based on the current light signal intensity feedback value to save energy, until the current light signal intensity feedback value is outside the preset fog range, thus completing the defogging of the door and window glass.

[0070] In one alternative approach, Figure 6 The diagram illustrates the logic relationship for defogging the inner side of the vehicle window in the automatic defrosting and defogging control method of this application. Combined with... Figure 6As shown, if it is determined that the target vehicle's window glass is frosted or fogged based on the relationship between the current light signal feedback value and the preset range of light signals, the steps to control the target vehicle to start defrosting or defogging also include: if it is determined that the current light signal quantity feedback value is less than the minimum value of the preset range of light signal quantity, it indicates that the inside of the window glass is likely fogged; then, the vehicle's interior temperature sensor and exterior temperature sensor are used to obtain the vehicle's interior temperature and exterior temperature respectively, and the relationship between the interior temperature and exterior temperature is determined; if it is determined that the interior temperature is less than or equal to the exterior temperature, the target vehicle is controlled to turn on the air conditioner to deliver warm air to the window glass until the current light signal quantity feedback value is equal to the preset valve of the preset range of light signal quantity, indicating that the defogging of the inside of the window glass is completed.

[0071] In this embodiment, the preset range of the number of light signals is the preset range of the number of infrared reflected light signals when dry.

[0072] It should be understood that when the preset range of light signal quantity is the preset range of infrared reflected light signal quantity when dry, if it is determined that the current light signal quantity feedback value is less than the minimum value of the preset range of light signal quantity, it indicates that fogging occurs on the inside of the car window glass.

[0073] Furthermore, if it is determined that the temperature inside the vehicle is higher than the temperature outside the vehicle, the target vehicle is controlled to turn on the air conditioner and deliver cold air to the window glass until the current light signal quantity feedback value equals the preset range preset valve of the light signal quantity, indicating that the defogging of the inside of the window glass is completed.

[0074] In one alternative approach, the speed at which the target vehicle controls the air conditioning to deliver warm or cold air towards the windows can be adjusted based on the current feedback value of the number of light signals.

[0075] For example, if the current light signal quantity feedback value is less than the value 'a', the air conditioner's fan speed is controlled to deliver warm or cold air to the car window at a level 1 fan speed, which is lower than level 2; if the current light signal quantity feedback value is greater than the value 'a', the air conditioner's fan speed is controlled to deliver warm or cold air to the car window at a level 3 fan speed, which is higher than level 2; if the current light signal quantity feedback value is equal to the value 'a', the air conditioner's fan speed is controlled to deliver warm or cold air to the car window at a level 2 fan speed.

[0076] In one alternative approach, before controlling the target vehicle to turn on the air conditioning and deliver warm or cold air to the windows, it is also necessary to determine whether the fogging on the inside of the windows is on the inside of the windshield or the inside of the door windows. The method for determining the fogging location on the inside of the windows is the same as the method for determining whether the frost on the outside of the windows is on the windshield or the door windows, and will not be repeated here.

[0077] In summary, this application provides a control method for automatic vehicle defrosting and defogging based on the principle that different materials have different light reflection capabilities. This method can indirectly characterize the density of tiny water droplets and ice crystals by the intensity of the infrared reflected light signal from different materials, providing a reference for automatic vehicle defrosting and defogging. Specifically:

[0078] Based on the principle that the reflection path of infrared light is changed by the refracting effect of the inner convex lens of tiny water droplets, this application provides a control method for automatic defrosting and defogging of vehicles. This method can almost completely avoid driving safety problems caused by sudden fogging of car windows while driving, effectively reduce the risk of traffic accidents, and greatly improve car driving safety.

[0079] Please see Figure 7 , Figure 7 A schematic diagram of the vehicle structure of this application is shown. This embodiment also provides a vehicle including a memory 71 and a processor 72. The processor 72 is used to execute program instructions stored in the memory 71 to implement the steps in any of the above-described vehicle automatic defrosting and defogging control method embodiments. In a specific implementation scenario, the vehicle may include, but is not limited to, a microcomputer or a server. Furthermore, the vehicle may also include mobile devices such as laptops and tablets, which are not limited here.

[0080] Specifically, processor 72 controls itself and memory 71 to implement the steps in any of the above-described vehicle automatic defrosting and defogging control method embodiments. Processor 72 can also be referred to as a CPU (Central Processing Unit). Processor 72 may be an integrated circuit chip with signal processing capabilities. Processor 72 can also be a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. A general-purpose processor can be a microprocessor or any conventional processor. Furthermore, processor 72 can be implemented using integrated circuit chips.

[0081] This embodiment also provides a computer-readable storage medium storing program instructions thereon, which, when executed by a processor, implement the steps in the above-described vehicle automatic defrosting and defogging control method embodiment.

[0082] In this application, a computer-readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, capable of transmitting, propagating, or transmitting a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0083] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0084] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0085] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0086] In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus can be implemented in other ways. For example, the apparatus implementations described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0087] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0088] The above description is merely a preferred exemplary embodiment of this application and is not intended to limit the implementation of this application. Those skilled in the art can easily make corresponding modifications or alterations based on the main concept and spirit of this application. Therefore, the scope of protection of this application should be determined by the scope of protection claimed in the claims.

Claims

1. A control method for automatic defrosting and defogging of vehicles, characterized in that, The method includes: In response to an automatic defrosting and defogging command received by the target vehicle, infrared light is emitted toward the window glass of the target vehicle; The infrared light is recovered, and a light signal feedback value is determined based on the recovered infrared light. The light signal feedback value includes at least a light signal intensity feedback value and a light signal quantity preset range feedback value. If it is determined that the target vehicle's window glass is frosted or fogged based on the relationship between the current optical signal feedback value and the preset range of the optical signal, then the target vehicle is controlled to start defrosting or defogging. The step of controlling the target vehicle to begin defrosting or defogging if it is determined that the target vehicle's window glass is frosted or fogged based on the relationship between the current optical signal feedback value and a preset range of optical signals includes: Determine the relationship between the current optical signal quantity feedback value and the preset range of optical signal quantity in the preset range of optical signal quantity; wherein, the preset range of optical signal quantity is determined based on the amount of infrared light reflected by the vehicle window glass when it is frosted, fogged or normal; If it is determined that the light signal quantity is within the preset range, then the relationship between the current light signal intensity feedback value and the preset range of light signal intensity in the preset range is determined; wherein, the preset range of light signal intensity is determined based on the magnitude of the reflection intensity of infrared light when the car window glass is frosted, fogged or normal; If the current light signal intensity feedback value is within the preset range of the light signal intensity, it is determined that the outer side of the vehicle window glass is frosted or fogged. Control the target vehicle to begin defrosting and / or defogging the outer side of the windows.

2. The method as described in claim 1, characterized in that, The step of determining whether the outer side of the vehicle window glass is frosted or fogged if the current light signal intensity feedback value is within the preset range of the light signal intensity includes: The preset range of light signal intensity is determined based on the intensity of infrared light reflected by the vehicle window glass when it is frosted, fogged, or normal. The preset range of light signal intensity is divided into a preset frost range and a preset fog range. The maximum value in the preset fog range is less than the minimum value in the preset frost range. Determine whether the current optical signal intensity feedback value is within the preset frost range; If the current light signal intensity feedback value is within the preset defrosting range, then the target vehicle is controlled to start defrosting the outside of the window glass. If the current light signal intensity feedback value is outside the preset frost range, then determine whether the current light signal intensity feedback value is within the preset fog range. If the current light signal intensity feedback value is within the preset fog range, then control the target vehicle to start defogging the outside of the window glass.

3. The method as described in claim 2, characterized in that, The step of controlling the target vehicle to begin defrosting the outer side of the window glass includes: If the location of the frost on the vehicle window is determined to be the windshield based on the propagation path of the corresponding recovered infrared light, then the target vehicle is controlled to use the first defrosting strategy to defrost the windshield. If the location of the frost on the vehicle window is determined to be the door window based on the propagation path of the corresponding recovered infrared light, then the target vehicle is controlled to use a second defrosting strategy, which is different from the first defrosting strategy, to defrost the door window.

4. The method as described in claim 3, characterized in that, The step of controlling the target vehicle to defrost the windshield using a first defrosting strategy includes: Control the target vehicle to spray windshield washer fluid onto the windshield, and turn on the air conditioner of the target vehicle to deliver warm air to the windshield at maximum windshield speed; Determine the relationship between the current optical signal intensity feedback value and the preset frost interval; If it is determined that the current light signal intensity feedback value is within the preset frost range, then the air conditioner of the target vehicle continues to be turned on to deliver warm air to the windshield at the maximum wind speed; If it is determined that the current light signal intensity feedback value is outside the preset frost range, then the windshield wipers of the target vehicle are controlled to work to remove the frost on the windshield.

5. The method as described in claim 3, characterized in that, The step of controlling the target vehicle to use a second defrosting strategy, which is different from the first defrosting strategy, to defrost the door and window glass includes: Control the air conditioning of the target vehicle to deliver warm air to the door and window glass at maximum fan speed; Determine the relationship between the current optical signal intensity feedback value and the preset frost interval; If it is determined that the current light signal intensity feedback value is within the preset frost range, then the air conditioner of the target vehicle continues to be controlled to deliver warm air to the door and window glass at the maximum wind speed. If it is determined that the current optical signal intensity feedback value is outside the preset frost range; A preset dry range is determined based on the intensity of infrared light reflected by the vehicle window glass when it is frosted, fogged, or normal. The minimum value of the preset dry range is greater than the maximum value of the preset fog range, and the maximum value of the preset dry range is less than the minimum value of the preset frost range. Determine the relationship between the current light signal intensity feedback value and the preset dry range; if it is determined that the current light signal intensity feedback value is within the preset dry range, then determine the optimal airflow speed of the air conditioner based on the magnitude of the current light signal intensity feedback value, and continue to deliver warm air to the car door and window glass at the optimal airflow speed.

6. The method as described in claim 2, characterized in that, The step of controlling the target vehicle to begin defogging the outer side of the window glass if the current light signal intensity feedback value is within the preset fog range includes: If the location of the frost on the vehicle window is determined to be the windshield based on the propagation path of the corresponding recovered infrared light, then the target vehicle is controlled to use the first defogging strategy to defog the windshield. If the location of the frost on the vehicle window is determined to be the door window based on the propagation path of the corresponding recovered infrared light, then the target vehicle is controlled to use a second defogging strategy, which is different from the first defogging strategy, to defog the door window.

7. The method as described in claim 2, characterized in that, If it is determined that the target vehicle's window glass is frosted or fogged based on the relationship between the current optical signal feedback value and the preset range of the optical signal, the step of controlling the target vehicle to start defrosting or defogging includes: If it is determined that the current optical signal quantity feedback value is less than the minimum value of the preset range of optical signal quantity; The interior temperature and exterior temperature of the target vehicle are obtained, and the relationship between the interior temperature and the exterior temperature is determined. If it is determined that the interior temperature of the vehicle is less than or equal to the exterior temperature, then the target vehicle is controlled to turn on its air conditioning and direct warm air toward the windows. If it is determined that the temperature inside the vehicle is greater than the temperature outside the vehicle, then the target vehicle is controlled to turn on its air conditioning and direct cold air towards the vehicle window.

8. A vehicle, characterized in that, The system includes a memory and a processor, wherein the processor is configured to execute program instructions stored in the memory to implement the automatic defrosting and defogging control method for a vehicle as described in any one of claims 1-7.

9. A computer-readable storage medium having program instructions stored thereon, characterized in that, When the program instructions are executed by the processor, they implement the automatic defrosting and defogging control method for vehicles as described in any one of claims 1-7.

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