Vehicle vanity mirror anti-fogging method, system and vehicle based on an air conditioning system

Abstract

The present invention relates to the technical field of automobiles, and discloses a method, a system and a vehicle for preventing a vehicle vanity mirror from fogging based on an air-conditioning system. A data processing unit of the air-conditioning system calculates the dew point temperature inside the vehicle; a fogging judgment unit judges the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew point temperature and the surface temperature of the vanity mirror, and compares the current fogging probability of the vanity mirror with a preset probability threshold. If the current fogging probability of the vanity mirror reaches the probability threshold, a control strategy corresponding to the current fogging probability is sent to an air-conditioning control unit of the air-conditioning system; the air-conditioning control unit of the air-conditioning system adjusts the air-conditioning electric air outlet based on the control strategy and the current air-conditioning state to perform anti-fogging treatment on the vanity mirror at the initial anti-fogging treatment position. The present invention performs anti-fogging treatment before the vanity mirror fogs, plays a role in preventing the vanity mirror from fogging, provides convenience for users to make up, and meets the needs of users for vehicle intelligence.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to an anti-fogging method and system for a vehicle vanity mirror based on an air conditioning system, and a vehicle. Background Art

[0002] As people's pace of life gradually accelerates, the phenomenon of putting on makeup in the car is increasing. At present, the cockpit of vehicles on the market is generally equipped with a sun visor, and a makeup mirror and a light are set on the surface of the sun visor facing the inside of the car. When the user in the cab needs to put on makeup, he can open the sun visor and use the makeup mirror to put on makeup.

[0003] However, due to environmental factors, in certain environments, the makeup mirror has the problem of fogging, which cannot provide users with a good makeup environment. If the fog on the makeup mirror is manually wiped off, not only is the defogger effect poor, but it will also leave wiping marks on the makeup mirror, affecting the mirror effect. In addition, the manual defogger method also affects the user experience and cannot meet the user's demand for vehicle intelligence. In particular, this type of manual defogger method is a processing method after the fog is generated on the makeup mirror, and it is impossible to intervene in advance before the makeup mirror fogs up. At present, there is no device or method that can realize automatic anti-fogging of the makeup mirror in the car. Summary of the invention

[0004] The purpose of the present invention is to provide a method, system and vehicle for preventing fogging of a vehicle vanity mirror based on an air-conditioning system. By judging the fogging risk of the vanity mirror, when there is a greater risk of fogging, the air-conditioning system and the vanity mirror in the vehicle are linked and adjusted, and early intervention is performed before the vanity mirror fogs up, thereby providing the user with a good makeup environment.

[0005] In a first aspect, the present invention provides a method for preventing fogging of a vehicle vanity mirror based on an air conditioning system, comprising the following steps:

[0006] The data processing unit of the air conditioning system calculates the dew point temperature in the vehicle based on the temperature and humidity data acquired by the sensor assembly; wherein the temperature and humidity data include the surface temperature of the vanity mirror;

[0007] The fogging judgment unit judges the current fogging probability of the vanity mirror based on the actual temperature difference between the calculated dew point temperature and the surface temperature of the vanity mirror, and compares the current fogging probability of the vanity mirror with a preset probability threshold value. If the current fogging probability of the vanity mirror reaches the probability threshold value, a control strategy corresponding to the current fogging probability is issued to the air conditioning control unit of the air conditioning system;

[0008] When the current fogging probability of the makeup mirror is greater than or equal to the probability threshold, the makeup mirror angle adjustment unit adjusts the makeup mirror to a preset anti-fogging processing initial position; when the current fogging probability of the makeup mirror is less than the probability threshold, the makeup mirror angle adjustment unit adjusts the makeup mirror to a preset makeup initial position;

[0009] Based on the control strategy and the current air - conditioning state, the air - conditioning control unit of the air - conditioning system adjusts the electric air outlet of the air - conditioner to perform anti - fogging treatment on the vanity mirror at the initial position of the anti - fogging treatment.

[0010] Further, the sensor assembly includes a vanity - mirror temperature sensor, an in - vehicle temperature sensor, an out - vehicle temperature sensor, and a humidity sensor; the temperature - humidity data further includes the in - vehicle relative humidity.

[0011] Further, after the data - processing unit of the air - conditioning system obtains the temperature - humidity data based on the sensor assembly, the data - processing unit also determines whether the sensor assembly has a fault. When it is determined that the sensor assembly has a fault, the dew - point temperature is set to a preset value.

[0012] Further, before the fogging judgment unit determines the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew - point temperature and the surface temperature of the vanity mirror, it also determines whether the currently calculated dew - point temperature is available. If it is not available, the previous available dew - point temperature is called to calculate the actual temperature difference value.

[0013] Further, the steps for the fogging judgment unit to determine the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew - point temperature and the surface temperature of the vanity mirror include:

[0014] The fogging judgment unit calculates the actual temperature difference value between the dew - point temperature and the surface temperature of the vanity mirror;

[0015] The fogging judgment unit pre - stores a temperature - difference fogging - probability reference table; wherein, the temperature - difference fogging - probability reference table includes a plurality of temperature - difference cells storing different temperature - difference range values and fogging - probability cells corresponding to each temperature - difference cell and storing different fogging probabilities.

[0016] Based on the temperature - difference fogging - probability reference table, the temperature - difference cell closest to the actual temperature difference value is found to obtain the fogging probability of the fogging - probability cell corresponding to the closest temperature - difference cell.

[0017] Further, the temperature - difference range value of a temperature - difference cell in the temperature - difference fogging - probability reference table is 0, and the fogging probability stored in the fogging - probability cell corresponding to this temperature - difference cell is 50%; wherein, the probability threshold is 50%.

[0018] Further, the steps for the fogging judgment unit to send a control strategy corresponding to the current fogging probability to the air - conditioning control unit of the air - conditioning system include:

[0019] The fogging judgment unit prestores a fogging probability control strategy reference table; wherein, the fogging probability control strategy reference table includes fogging probability cells storing different fogging probabilities and control strategy cells storing different air volume voltages corresponding to each fogging probability cell;

[0020] Based on the fogging probability control strategy reference table, the fogging judgment unit finds the fogging probability cell closest to the current fogging probability to obtain the air volume voltage of the control strategy cell corresponding to the closest fogging probability cell;

[0021] The fogging judgment unit sends the air volume voltage to the air conditioner control unit of the air conditioning system.

[0022] Further, after the vanity mirror completes the anti-fogging treatment, the vanity mirror angle adjustment unit adjusts the vanity mirror to a preset standard makeup position based on the head height information of the driver's cab passengers collected by the existing in-vehicle face recognition system.

[0023] In a second aspect, the present invention also proposes a vehicle vanity mirror anti-fogging system based on an air conditioning system, including:

[0024] A sensor assembly for obtaining temperature and humidity data; wherein, the temperature and humidity data includes the surface temperature of the vanity mirror;

[0025] A data processing unit for calculating the dew point temperature inside the vehicle based on the temperature and humidity data;

[0026] A fogging judgment unit for judging the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew point temperature and the surface temperature of the vanity mirror, and comparing the current fogging probability of the vanity mirror with a preset probability threshold. If the current fogging probability of the vanity mirror reaches the probability threshold, a control strategy corresponding to the current fogging probability is sent to the air conditioner control unit of the air conditioning system;

[0027] A vanity mirror angle adjustment unit for adjusting the vanity mirror to a preset anti-fogging treatment initial position when the current fogging probability of the vanity mirror is greater than or equal to the probability threshold; and adjusting the vanity mirror to a preset makeup initial position when the current fogging probability of the vanity mirror is less than the probability threshold;

[0028] An air conditioner control unit for performing anti-fogging treatment on the vanity mirror in the anti-fogging treatment initial position based on the control strategy and the current air conditioning state by adjusting the air conditioner electric air outlet.

[0029] In a third aspect, the present invention also proposes a vehicle including the vehicle vanity mirror anti-fogging system based on the air conditioning system.

[0030] The beneficial effects brought by the technical solution provided by the present invention include: by calculating the dew point temperature inside the vehicle and the actual temperature difference value, the current fogging probability of the vanity mirror is judged. When the current fogging probability reaches the probability threshold, the air-conditioning control unit adjusts the electric air outlet of the air conditioner to prevent fogging of the vanity mirror based on the obtained control strategy. Thus, anti-fogging treatment is carried out before the vanity mirror fogs up, providing a good makeup environment for users. Compared with the prior art where the defogging treatment is carried out after the vanity mirror fogs up, the present invention performs the treatment before fogging, playing a role in preventing the vanity mirror from fogging and leaving no defogging marks on the vanity mirror. In addition, when the current fogging probability of the vanity mirror is less than the probability threshold, the vanity mirror angle adjustment unit adjusts the vanity mirror to the preset initial makeup position, providing convenience for users to make up, making the vehicle have an intelligent makeup mode and meeting the user's demand for vehicle intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic flow chart of the method for preventing fogging of a vehicle vanity mirror based on an air-conditioning system according to the present invention.

[0033] Figure 2 It is a schematic diagram of the positional relationship among the vanity mirror, the driver and passenger, and the air outlet of the air conditioner of the vehicle according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention fall within the scope of protection of the present invention.

[0035] As Figure 1 shown, the method for preventing fogging of a vehicle vanity mirror based on an air-conditioning system proposed by the present invention includes the following steps:

[0036] The data processing unit of the air conditioning system calculates the dew point temperature inside the vehicle based on the temperature and humidity data obtained by the sensor assembly; wherein, the temperature and humidity data includes the temperature of the vanity mirror surface; the sensor assembly includes a vanity mirror temperature sensor, an in-vehicle temperature sensor, an out-vehicle temperature sensor, and a humidity sensor; the temperature and humidity data further includes the relative humidity inside the vehicle. The vanity mirror temperature sensor is used to obtain the temperature of the vanity mirror surface, the in-vehicle temperature sensor is used to obtain the in-vehicle temperature, the out-vehicle temperature sensor is used to obtain the out-vehicle temperature, and the humidity sensor is used to obtain the relative humidity inside the vehicle.

[0037] The fogging determination unit determines the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew point temperature and the temperature of the vanity mirror surface, and compares the current fogging probability of the vanity mirror with a preset probability threshold. If the current fogging probability of the vanity mirror reaches the probability threshold, a control strategy corresponding to the current fogging probability is sent to the air conditioning control unit of the air conditioning system;

[0038] When the current fogging probability of the vanity mirror is greater than or equal to the probability threshold, the vanity mirror angle adjustment unit adjusts the vanity mirror to a preset initial anti-fogging treatment position; when the current fogging probability of the vanity mirror is less than the probability threshold, the vanity mirror angle adjustment unit adjusts the vanity mirror to a preset initial makeup position;

[0039] The air conditioning control unit of the air conditioning system adjusts the air conditioning electric air outlet to perform anti-fogging treatment on the vanity mirror in the initial anti-fogging treatment position based on the control strategy and the current air conditioning state.

[0040] After the data processing unit of the air conditioning system obtains the temperature and humidity data based on the sensor assembly, the data processing unit further determines whether the sensor assembly has a fault. When it is determined that the sensor assembly has a fault, the dew point temperature is set to a preset value.

[0041] Before the fogging determination unit determines the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew point temperature and the temperature of the vanity mirror surface, it also determines whether the currently calculated dew point temperature is available. If it is not available, the previous available dew point temperature is called to calculate the actual temperature difference value.

[0042] The steps for the fogging determination unit to determine the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew point temperature and the temperature of the vanity mirror surface include:

[0043] The fogging determination unit calculates the actual temperature difference value between the dew point temperature and the temperature of the vanity mirror surface;

[0044] The fogging determination unit prestores a temperature difference fogging probability reference table; wherein, the temperature difference fogging probability reference table includes a plurality of temperature difference cells storing different temperature difference range values and fogging probability cells corresponding to each temperature difference cell and storing different fogging probabilities;

[0045] Based on the temperature difference fogging probability reference table, find the temperature difference cell closest to the actual temperature difference value to obtain the fogging probability of the fogging probability cell corresponding to the closest temperature difference cell.

[0046] The temperature difference range value of a temperature difference cell in the temperature difference fogging probability reference table is 0, and the fogging probability stored in the fogging probability cell corresponding to this temperature difference cell is 50%; wherein, the probability threshold is 50%. Of course, the probability threshold can also be other values.

[0047] The steps for the fogging determination unit to send a control strategy corresponding to the current fogging probability to the air-conditioning control unit of the air-conditioning system include:

[0048] The fogging determination unit prestores a fogging probability control strategy reference table; wherein, the fogging probability control strategy reference table includes fogging probability cells storing different fogging probabilities and control strategy cells corresponding to each fogging probability cell and storing different air volume voltages;

[0049] The fogging determination unit, based on the fogging probability control strategy reference table, finds the fogging probability cell closest to the current fogging probability to obtain the air volume voltage of the control strategy cell corresponding to the closest fogging probability cell;

[0050] The fogging determination unit sends the air volume voltage to the air-conditioning control unit of the air-conditioning system.

[0051] After the vanity mirror completes the anti-fogging treatment, the vanity mirror angle adjustment unit adjusts the vanity mirror to a preset standard makeup position based on the head height information of the driver's cab passengers collected by the existing facial recognition system in the vehicle.

[0052] The method of this embodiment is further described below:

[0053] When the user needs to apply makeup, they can selectively enter the makeup mode using the vehicle-mounted system. After entering the makeup mode, the following judgment logic will be performed:

[0054] The sensor component acquires temperature and humidity data, and the data processing unit determines whether the sensor component has a fault. When the sensor component has a fault, that is, when any one of the sensors in the sensor component has a fault, the dew point temperature is set to a preset value. In this embodiment, the preset value is defaulted to 15 °C (to be calibrated), and a dew point temperature unavailable flag bit is sent. If the sensor component has no fault, the dew point temperature is calculated according to the following formula:

[0055]

[0056] In the formula: Td: Dew point temperature °C; T: Temperature of the makeup mirror surface °C; RH: Relative humidity inside the vehicle %; Constants a and b: a = 17.27, b = 237.7.

[0057] This formula can be used within the following condition range:

[0058] (1) 0 °C < T < 60 °C;

[0059] (2) 1% < RH < 100%;

[0060] (3) 0 °C < Td < 50 °C;

[0061] If any of the above conditions is not met, the dew point temperature is unavailable.

[0062] Before judging the current fogging probability of the makeup mirror, it is also necessary to judge whether the currently calculated dew point temperature is available.

[0063] If it is unavailable, the available dew point temperature from the previous time is called to calculate the actual temperature difference value.

[0064] If it is available, the actual temperature difference value △temp between the dew point temperature and the makeup mirror surface temperature is calculated using the following formula. So as to execute different control strategies according to different actual temperature difference values.

[0065] △temp = T – Td

[0066] In the above formula: Td: Dew point temperature °C; T: Temperature of the makeup mirror surface °C.

[0067] As shown in Table 1 below, the fogging judgment unit pre-stores a temperature difference fogging probability reference table; among them, the temperature difference fogging probability reference table includes a plurality of temperature difference cells storing different temperature difference range values and fogging probability cells corresponding to each temperature difference cell and storing different fogging probabilities. In addition, a gear cell storing different gear information can also be set on the temperature difference fogging probability reference table.

[0068] Table 1: Temperature difference fogging probability reference table

[0069]

[0070] As can be seen from Table 1 above, the greater the positive temperature difference, the lower the fogging probability of the makeup mirror, and the less likely it is to fog up. Different control strategies can be adopted according to different gears.

[0071] Based on Table 1, find the temperature difference cell closest to the actual temperature difference value to obtain the fogging probability of the fogging probability cell corresponding to the closest temperature difference cell. For example, if the actual temperature difference value is 9, the closest temperature difference cell is 10, and the corresponding fogging probability is 30%. In this embodiment, since the probability threshold is 50%, the fogging probability of 30% corresponding to this actual temperature difference value is less than the probability threshold of 50%.

[0072] If there is a risk of fogging on the makeup mirror, a pop-up window "There is a risk of fogging on the current makeup mirror. Do you want to turn on the anti-fogging treatment?" will be prompted on the car machine display screen or the display screen of the electronic makeup mirror. If the user selects "No", the anti-fogging treatment will be directly skipped and the subsequent function logic will be entered. If the user does not respond within ten seconds, the anti-fogging treatment will be skipped, and there will be no further prompt or entry into the anti-fogging treatment of the makeup mirror surface during this makeup mode. If the user selects to perform the anti-fogging treatment on the makeup mirror, the makeup mirror angle adjustment unit will adjust the makeup mirror to the preset initial anti-fogging treatment position, which is determined by the vehicle interior.

[0073] At the same time, the air-conditioning control unit of the air-conditioning system adjusts the air-conditioning electric air outlet to perform anti-fogging treatment on the makeup mirror at the initial anti-fogging treatment position for 90s based on the control strategy and the current air-conditioning state.

[0074] The control strategy in this embodiment includes a compressor control strategy and a air volume control strategy. In the automatic mode, when the compressor is in the off state and the fogging probability is greater than or equal to 50%, the compressor state is adjusted to on, that is, the compressor is started. In the manual mode, the compressor remains in the off state.

[0075] As shown in Table 2 below is the fogging probability control strategy reference table pre-stored in the fogging judgment unit. The fogging probability control strategy reference table includes fogging probability cells storing different fogging probabilities and control strategy cells storing different air volume voltages corresponding to each fogging probability cell.

[0076] Table 2: Fogging Probability Control Strategy Reference Table

[0077]

[0078] In Table 2 above, when the fogging probability is 40%, the air volume voltage is 0v, and when the fogging probability reaches 50%, the air volume voltage is 0.5v.

[0079] During anti-fogging treatment, if the initial air conditioner is in the off state, the air conditioner will be turned on during the anti-fogging process to make the air conditioner blow air. If the air conditioner is in the automatic state mode at this time, on the basis of the original automatic calculation of the air volume of the air conditioner, a correction to the air volume during anti-fogging will be added, and the correction value can refer to the air volume voltage in Table 2 above. If the original air conditioner state is in the manual state, the air volume during the anti-fogging process will remain the same as the air volume in the original manual state.

[0080] After the vanity mirror completes the anti-fogging treatment, the vanity mirror angle adjustment unit adjusts the vanity mirror to the preset standard makeup position based on the head height information of the driver's cab passengers collected by the existing in-vehicle face recognition system.

[0081] The relationship between the head height of the driver's cab passengers and the standard makeup position of the vanity mirror is shown in Table 3 below. Among them, the head height information of the driver's cab passengers includes the height of the head above the horizontal line of the camera, and the standard makeup position is reflected by the adjustment angle of the vanity mirror.

[0082] Table 3: Relationship between the head height of the driver's cab passengers and the adjustment angle of the vanity mirror

[0083]

[0084] After adjusting the vanity mirror to the preset standard makeup position, the user can manually fine-tune the vanity mirror. The in-vehicle face recognition system (existing) will remember the user's setting value according to face memory and adjust the vanity mirror to the user's set position when the old user uses it next time. If the in-vehicle camera does not detect the face image of the driver's cab passengers for more than 10s, this makeup mode will be exited. While adjusting the position of the vanity mirror, the air conditioner control unit will adjust according to the current air volume, air outlet mode, and internal and external circulation. Taking the co-driver's cab as an example, if the current air volume of the co-driver's cab air conditioner is greater than or equal to the third gear, the air conditioner control unit will adjust the air volume of the co-driver's cab to the second gear; if the current air conditioner is less than the third gear, the current air volume of the co-driver's cab will be retained. For the air outlet mode, if the current air outlet mode of the co-driver's cab includes the face-blowing mode, the air conditioner control unit will adjust the direction of the electric air outlet to avoid blowing the face, so that the customer can avoid the direct blowing of the air volume on the face during the makeup mode and affect the user. If the current air outlet mode does not include the face-blowing mode, the electric air outlet does not need to be adjusted. Among them, the face-blowing mode belongs to the prior art and will not be elaborated.

[0085] Regarding the internal and external circulation, if the air conditioner control unit recognizes that the current circulating air inlet position is the internal circulation, it will adjust the circulating air inlet to a partial external circulation (the specific opening can be confirmed by experiments, tentatively 20% external circulation) to maintain air exchange in the vehicle, which is beneficial to the discharge of the smell and particles in the vehicle; if the current air conditioner circulating air inlet state is not the internal circulation, the circulation ratio will not be changed.

[0086] Generally, after the vehicle enters the makeup mode, the user finishes makeup and can exit the makeup mode by clicking the exit button on the display screen. Or, during the makeup mode, if the user operates the multimedia display screen to change the air volume, mode, air circulation status of the co-pilot air conditioner, or turn off the air conditioner, the makeup mode will also be exited.

[0087] Based on the same inventive concept, the present invention also provides a vehicle makeup mirror anti-fogging system based on an air conditioning system, which can execute the above-mentioned vehicle makeup mirror anti-fogging method based on the air conditioning system. The system includes:

[0088] A sensor assembly for obtaining temperature and humidity data; wherein, the temperature and humidity data includes the surface temperature of the makeup mirror; the sensor assembly includes a makeup mirror temperature sensor, an in-vehicle temperature sensor, an out-vehicle temperature sensor, and a humidity sensor; the temperature and humidity data further includes the relative humidity inside the vehicle.

[0089] A data processing unit for calculating the dew point temperature inside the vehicle based on the temperature and humidity data;

[0090] An anti-fogging judgment unit for judging the current anti-fogging probability of the makeup mirror based on the actual temperature difference value between the calculated dew point temperature and the surface temperature of the makeup mirror, and comparing the current anti-fogging probability of the makeup mirror with a preset probability threshold. If the current anti-fogging probability of the makeup mirror reaches the probability threshold, a control strategy corresponding to the current anti-fogging probability is sent to the air conditioning control unit of the air conditioning system;

[0091] A makeup mirror angle adjustment unit for adjusting the makeup mirror to a preset anti-fogging treatment initial position when the current anti-fogging probability of the makeup mirror is greater than or equal to the probability threshold; and adjusting the makeup mirror to a preset makeup initial position when the current anti-fogging probability of the makeup mirror is less than the probability threshold;

[0092] An air conditioning control unit for adjusting the electric air outlet of the air conditioner to perform anti-fogging treatment on the makeup mirror in the anti-fogging treatment initial position based on the control strategy and the current air conditioning state.

[0093] After the data processing unit of the air conditioning system obtains the temperature and humidity data based on the sensor assembly, the data processing unit further judges whether the sensor assembly has a fault. When it is judged that the sensor assembly has a fault, the dew point temperature is set to a preset value.

[0094] Before the anti-fogging judgment unit judges the current anti-fogging probability of the makeup mirror based on the actual temperature difference value between the calculated dew point temperature and the surface temperature of the makeup mirror, it also judges whether the currently calculated dew point temperature is available. If it is not available, the previous available dew point temperature is called to calculate the actual temperature difference value.

[0095] The fogging determination unit pre-stores a temperature difference fogging probability reference table; wherein, the temperature difference fogging probability reference table includes a plurality of temperature difference cells storing different temperature difference range values and fogging probability cells corresponding to each temperature difference cell and storing different fogging probabilities.

[0096] The temperature difference range value of a temperature difference cell in the temperature difference fogging probability reference table is 0, and the fogging probability stored in the fogging probability cell corresponding to this temperature difference cell is 50%; wherein, the probability threshold is 50%.

[0097] The fogging determination unit pre-stores a fogging probability control strategy reference table; wherein, the fogging probability control strategy reference table includes fogging probability cells storing different fogging probabilities and control strategy cells corresponding to each fogging probability cell and storing different air volume voltages.

[0098] After the makeup mirror completes the anti-fogging treatment, the makeup mirror angle adjustment unit adjusts the makeup mirror to a preset standard makeup position based on the head height information of the driver's cab passengers collected by the existing facial recognition system in the vehicle.

[0099] Based on the same inventive concept, the present invention also proposes a vehicle, including the above vehicle makeup mirror anti-fogging system based on the air conditioning system, and can execute the above vehicle makeup mirror anti-fogging method based on the air conditioning system.

[0100] The data processing unit of the air conditioning system calculates the dew point temperature in the vehicle based on the temperature and humidity data obtained by the sensor assembly; wherein, the temperature and humidity data includes the temperature of the makeup mirror surface.

[0101] The fogging determination unit determines the current fogging probability of the makeup mirror based on the actual temperature difference value between the calculated dew point temperature and the temperature of the makeup mirror surface, and compares the current fogging probability of the makeup mirror with a preset probability threshold. If the current fogging probability of the makeup mirror reaches the probability threshold, a control strategy corresponding to the current fogging probability is sent to the air conditioning control unit of the air conditioning system.

[0102] When the current fogging probability of the makeup mirror is greater than or equal to the probability threshold, the makeup mirror angle adjustment unit adjusts the makeup mirror to a preset anti-fogging treatment initial position; when the current fogging probability of the makeup mirror is less than the probability threshold, the makeup mirror angle adjustment unit adjusts the makeup mirror to a preset makeup initial position.

[0103] The air conditioning control unit of the air conditioning system adjusts the air conditioning electric air outlet to perform anti-fogging treatment on the makeup mirror in the anti-fogging treatment initial position based on the control strategy and the current air conditioning state.

[0104] It should be noted that in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0105] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preventing fogging of a vehicle vanity mirror based on an air conditioning system, characterized in that, it includes the following steps: The data processing unit of the air conditioning system calculates the dew point temperature inside the vehicle based on the temperature and humidity data obtained by the sensor assembly; wherein, the temperature and humidity data includes the surface temperature of the vanity mirror; The fogging judgment unit judges the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew point temperature and the surface temperature of the vanity mirror, and compares the current fogging probability of the vanity mirror with a preset probability threshold. If the current fogging probability of the vanity mirror reaches the probability threshold, a control strategy corresponding to the current fogging probability is sent to the air conditioning control unit of the air conditioning system; When the current fogging probability of the vanity mirror is greater than or equal to the probability threshold, the vanity mirror angle adjustment unit adjusts the vanity mirror to a preset initial anti-fogging treatment position; when the current fogging probability of the vanity mirror is less than the probability threshold, the vanity mirror angle adjustment unit adjusts the vanity mirror to a preset initial makeup position; The air conditioning control unit of the air conditioning system adjusts the air conditioning electric air outlet to perform anti-fogging treatment on the vanity mirror in the initial anti-fogging treatment position based on the control strategy and the current air conditioning state.

2. The method for preventing fogging of a vehicle vanity mirror based on an air conditioning system according to claim 1, characterized in that, the sensor assembly includes a vanity mirror temperature sensor, an in-vehicle temperature sensor, an out-of-vehicle temperature sensor, and a humidity sensor; the temperature and humidity data further includes the relative humidity inside the vehicle.

3. The method for preventing fogging of a vehicle vanity mirror based on an air conditioning system according to claim 2, characterized in that, after the data processing unit of the air conditioning system obtains the temperature and humidity data based on the sensor assembly, the data processing unit further judges whether the sensor assembly has a fault. When it is judged that the sensor assembly has a fault, the dew point temperature is given as a preset value.

4. The method for preventing fogging of a vehicle vanity mirror based on an air conditioning system according to claim 1, characterized in that, before the fogging judgment unit judges the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew point temperature and the surface temperature of the vanity mirror, it also judges whether the currently calculated dew point temperature is available. If it is not available, the previous available dew point temperature is called to calculate the actual temperature difference value.

5. The method for preventing fogging of a vehicle vanity mirror based on an air conditioning system according to claim 1, characterized in that, the step of the fogging judgment unit judging the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew point temperature and the surface temperature of the vanity mirror includes: the fogging judgment unit calculates the actual temperature difference value between the dew point temperature and the surface temperature of the vanity mirror; the fogging judgment unit pre-stores a temperature difference fogging probability reference table; wherein, the temperature difference fogging probability reference table includes a plurality of temperature difference cells storing different temperature difference range values and fogging probability cells corresponding to each temperature difference cell and storing different fogging probabilities; Based on the temperature difference fogging probability reference table, find the temperature difference cell closest to the actual temperature difference value to obtain the fogging probability of the fogging probability cell corresponding to the closest temperature difference cell.

6. The method for preventing fogging of a vehicle vanity mirror based on an air conditioning system according to claim 5, It is characterized in that the temperature difference gear value of a temperature difference cell in the reference table of temperature difference fogging probability is 0, and the fogging probability stored in the fogging probability cell corresponding to this temperature difference cell is 50%; wherein, the probability threshold is 50%.

7. The method for preventing fogging of a vehicle vanity mirror based on an air conditioning system according to claim 1, It is characterized in that the step of the fogging judgment unit sending a control strategy corresponding to the current fogging probability to the air conditioning control unit of the air conditioning system includes: the fogging judgment unit pre-stores a reference table of fogging probability control strategies; wherein, the reference table of fogging probability control strategies includes fogging probability cells storing different fogging probabilities and control strategy cells storing different air volume voltages corresponding to each fogging probability cell; the fogging judgment unit, based on the reference table of fogging probability control strategies, finds the fogging probability cell closest to the current fogging probability to obtain the air volume voltage of the control strategy cell corresponding to this closest fogging probability cell; the fogging judgment unit sends the air volume voltage to the air conditioning control unit of the air conditioning system.

8. The method for preventing fogging of a vehicle vanity mirror based on an air conditioning system according to claim 1, It is characterized in that after the fogging prevention treatment of the vanity mirror is completed, the vanity mirror angle adjustment unit adjusts the vanity mirror to a preset standard makeup position based on the head height information of the driver's cab passengers collected by the existing facial recognition system in the vehicle.

9. A vehicle vanity mirror anti-fogging system based on an air conditioning system, It is characterized in that comprises: a sensor assembly for obtaining temperature and humidity data; wherein, the temperature and humidity data includes the surface temperature of the vanity mirror; a data processing unit for calculating the dew point temperature inside the vehicle based on the temperature and humidity data; a fogging judgment unit for judging the current fogging probability of the vanity mirror based on the actual temperature difference value between the calculated dew point temperature and the surface temperature of the vanity mirror, and comparing the current fogging probability of the vanity mirror with a preset probability threshold. If the current fogging probability of the vanity mirror reaches the probability threshold, a control strategy corresponding to the current fogging probability is sent to the air conditioning control unit of the air conditioning system; a vanity mirror angle adjustment unit for adjusting the vanity mirror to a preset anti-fogging treatment initial position when the current fogging probability of the vanity mirror is greater than or equal to the probability threshold; and adjusting the vanity mirror to a preset makeup initial position when the current fogging probability of the vanity mirror is less than the probability threshold; an air conditioning control unit for adjusting the air conditioning electric air outlet to perform anti-fogging treatment on the vanity mirror in the anti-fogging treatment initial position based on the control strategy and the current air conditioning state.

10. A vehicle, It is characterized in that comprises the vehicle vanity mirror anti-fogging system based on an air conditioning system according to claim 9.

Images