Vehicle automatic defogging method and device and computer readable storage medium

Abstract

The invention provides an automatic demisting method and device for a vehicle and a computer readable storage medium, and relates to the technical field of demisting, the automatic demisting method for the vehicle comprises the following steps that air conditioner operation parameters of the vehicle are obtained, and the air conditioner operation parameters at least comprise the environment temperature, the in-vehicle temperature and the illumination intensity; vehicle operation conditions are matched based on the air conditioner operation parameters; calculating a fogging risk grade based on the air conditioner operation parameters; and a corresponding demisting strategy is matched according to the vehicle operation working condition and the fogging risk level, and demisting and defrosting are carried out based on the demisting strategy. According to the automatic defogging method for the vehicle, the vehicle operation condition and the fogging risk level are automatically recognized and judged by obtaining the air conditioner environment temperature, the in-vehicle temperature and the illumination intensity, and a plurality of humidity sensors do not need to be additionally arranged to accurately calculate the glass temperature and the dew point temperature; the occupied space of equipment can be reduced, and cost is saved.

Description

Technical Field

[0001] The present application relates to the field of defogging technology, and in particular to a vehicle automatic defogging method, device and computer-readable storage medium. Background Art

[0002] During the operation of the car air conditioner, frost and fog may form on the windshield, affecting the user's driving experience.

[0003] In the related art, in order to accurately determine the timing of defrosting and defogger, it is necessary to set up multiple humidity sensors and temperature sensors in the vehicle to read and record parameters during vehicle operation, such as glass temperature, temperature inside and outside the vehicle, and humidity inside and outside the vehicle, and then calculate the dew point temperature based on various parameters and determine the current fogging risk through the glass temperature and dew point temperature. Setting up multiple sensors not only increases the complexity of arranging the defogger system on the vehicle, but also increases the equipment cost. Summary of the invention

[0004] The embodiments of the present application provide a vehicle automatic defog method, device and computer-readable storage medium, which are used to solve the problem of high cost of vehicle automatic defog.

[0005] In some embodiments, a vehicle automatic defogging method is provided, comprising the following steps:

[0006] Acquiring air conditioning operating parameters of the vehicle, wherein the air conditioning operating parameters at least include ambient temperature, vehicle interior temperature, and light intensity;

[0007] matching a vehicle operating condition based on the air conditioning operating parameters;

[0008] Calculating a fogging risk level based on the air conditioning operating parameters;

[0009] A corresponding defog strategy is matched according to the vehicle operating condition and the fogging risk level, and defog and defrost are performed based on the defog strategy.

[0010] In some embodiments, the vehicle operating conditions include at least spring and autumn conditions, winter conditions, and extreme cold conditions, and matching the vehicle operating conditions based on the air conditioning operating parameters includes:

[0011] Configure the temperature reference range under different vehicle operating conditions;

[0012] matching the ambient temperature to the temperature reference range;

[0013] Determine the vehicle operating condition corresponding to the matched temperature reference range.

[0014] In some embodiments, the defogging strategy corresponding to the vehicle operating condition and the fogging risk level includes:

[0015] Under the spring and autumn working conditions, when the fogging risk level is greater than the preset risk level, the evaporator temperature is lowered and the heater temperature is increased;

[0016] Under the winter working condition, when the fogging risk level is greater than the preset risk level, increasing the window blowing air outlet temperature;

[0017] Under the extremely cold working condition, when the fogging risk level is greater than the preset risk level, the window blowing air outlet temperature is increased, and the window blowing damper air volume is adjusted to a maximum value.

[0018] In some embodiments, the fogging risk level includes at least high risk, medium risk and low risk, and the calculating of the fogging risk level based on the in-vehicle environment parameter and the out-vehicle environment parameter includes:

[0019] Calculating the glass temperature according to the light intensity, the ambient temperature and the temperature inside the vehicle;

[0020] Presetting a relative humidity upper limit value and calculating a dew point temperature according to the vehicle interior temperature and the relative humidity upper limit value;

[0021] Calculating a temperature difference between the glass temperature and the dew point temperature;

[0022] The fogging risk level is matched according to the temperature difference.

[0023] In some embodiments, matching the fogging risk level according to the temperature difference comprises:

[0024] Preset a first temperature difference threshold and a second temperature difference threshold, wherein the first temperature difference threshold is smaller than the second temperature difference threshold;

[0025] Determining whether the temperature difference is less than the first temperature difference threshold;

[0026] Determining whether the temperature difference is less than the second temperature difference threshold;

[0027] When the temperature difference is less than the first temperature difference threshold, determining the fogging risk level as high risk;

[0028] When the temperature difference is greater than or equal to the first temperature difference threshold, and the temperature difference is less than the second temperature difference threshold, the fogging risk level is determined to be medium risk;

[0029] When the temperature difference is greater than or equal to the second temperature difference threshold, the fogging risk level is determined to be low risk.

[0030] In some embodiments, calculating the glass temperature according to the light intensity, the ambient temperature, and the temperature inside the vehicle includes:

[0031] Calculate the glass temperature according to the following formula:

[0032] T=K sun T sun +K env T env +K in T in

[0033] Wherein, T is the glass temperature, T sun is the light intensity, K sun is the illumination compensation coefficient corresponding to the illumination intensity, T env is the ambient temperature, K env is the ambient temperature compensation coefficient corresponding to the ambient temperature, T in is the interior temperature of the vehicle, K in is the in-vehicle temperature compensation coefficient corresponding to the in-vehicle temperature.

[0034] In some embodiments, the upper limit of relative humidity ranges from 75% to 100%.

[0035] In some embodiments, the defogging strategy corresponding to the vehicle operating condition and the fogging risk level includes:

[0036] Under the spring and autumn working conditions, when the fogging risk level is high risk, the evaporator temperature is lowered to the first evaporation temperature, and the heater temperature is increased to the first heating temperature; when the fogging risk level is medium risk, the evaporator temperature is lowered to the second evaporation temperature, and the heater temperature is increased to the second heating temperature;

[0037] Under the winter working condition, when the temperature difference is greater than or equal to the first temperature difference threshold, the window blowing air outlet temperature is increased to the first air outlet temperature; when the fogging risk level is medium risk, the window blowing air outlet temperature is increased to the second air outlet temperature;

[0038] Under the extremely cold working conditions, when the fogging risk level is high risk, the window blowing air outlet temperature is increased to the third air outlet temperature and the window blowing damper air volume is adjusted to the maximum value; when the fogging risk level is medium risk, the window blowing air outlet temperature is increased to the fourth air outlet temperature and the window blowing damper air volume is adjusted to the maximum value.

[0039] In some embodiments, a vehicle automatic defogger device is provided, comprising:

[0040] An acquisition module, used to acquire the air conditioning operating parameters of the vehicle, wherein the air conditioning operating parameters at least include the ambient temperature, the temperature inside the vehicle, and the light intensity;

[0041] A calculation module, used for matching the vehicle operating conditions and calculating the fogging risk level according to the air conditioning operating parameters;

[0042] An execution module is used to match a corresponding defogger strategy according to the vehicle operating condition and the fogging risk level, and perform defogger and defrost based on the defogger strategy.

[0043] In some embodiments, a computer-readable storage medium is provided, on which a vehicle automatic defog program is stored, and when the vehicle automatic defog program is executed by a processor, the steps of the above-mentioned vehicle automatic defog method are implemented.

[0044] The vehicle automatic defog method provided in the embodiment of the present application automatically identifies and judges the vehicle operating conditions and the fogging risk level by obtaining the air-conditioning ambient temperature, the temperature inside the vehicle and the light intensity. There is no need to additionally set up multiple humidity sensors to accurately calculate the glass temperature and the dew point temperature, which can reduce the space occupied by equipment and save costs. Different defog means or prevention means can be matched according to different vehicle operating conditions, and the execution intensity of the means to be taken can be determined according to the fogging risk level. Glass fogging can be prevented at any time, so that a fog-free effect can be achieved throughout the driving process, reducing the safety hazards caused by glass fogging and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 is a flow chart of a vehicle automatic defogging method in one embodiment of the present application;

[0047] Figure 2 yes Figure 1 A detailed flow chart of step S200 in the embodiment;

[0048] Figure 3 yes Figure 1 Another detailed flow chart of step S200 in the embodiment;

[0049] Figure 4 yes Figure 1 A detailed flow chart of step S300 in the embodiment;

[0050] Figure 5 yes Figure 1 Schematic diagram of the principle of step S300 in the embodiment;

[0051] Figure 6 is a schematic structural diagram of an automatic vehicle defogger in one embodiment of the present application;

[0052] Figure 7 It is a schematic diagram of the structure of a vehicle in one embodiment of the present application. DETAILED DESCRIPTION

[0053] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0054] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0055] The following describes the vehicle automatic defog method, device and storage medium of the embodiment of the present application with reference to the accompanying drawings. In order to accurately determine the timing of defrosting and defog, it is necessary to set up multiple humidity sensors and temperature sensors in the vehicle in accordance with the related technology mentioned in the above background technology. Setting up multiple sensors not only increases the equipment cost, but also increases the complexity of arranging the defog system on the vehicle.

[0056] See also Figure 1 , Figure 1 The flowchart of the automatic vehicle defogging method in one embodiment of the present application. Based on this, the main solution of the automatic vehicle defogging method in the embodiment of the present application includes the following steps:

[0057] S100: Acquire air conditioning operating parameters of the vehicle, where the air conditioning operating parameters at least include ambient temperature, vehicle interior temperature, and light intensity.

[0058] It should be noted that ambient temperature refers to the temperature outside the car window; interior temperature refers to the real-time temperature inside the car during driving; light intensity refers to the light intensity shining on the window surface; the temperature status inside and outside the car and the light intensity status can be obtained through sensors or cloud data. Specifically, the interior temperature is obtained through the interior temperature sensor, the ambient temperature is obtained through the exterior temperature sensor, the light intensity is obtained through the light sensor, or the temperature data and light intensity data of the vehicle's location are obtained through the network.

[0059] Furthermore, in order to make the collected temperature values ​​more accurate, in this embodiment, multiple ambient temperatures, vehicle interior temperatures, and light intensities are collected by sensors within a preset period of time, and the multiple ambient temperatures, vehicle interior temperatures, and light intensities collected within the preset period of time are sorted by size, and the data in the middle of the ranking is used as the ambient temperature, vehicle interior temperature, and light intensity. For example, if the three ambient temperatures collected within 30 seconds are 15°C, 18°C, and 20°C, 18°C ​​is taken as the ambient temperature.

[0060] S200, matching vehicle operating conditions based on air conditioning operating parameters;

[0061] S300, calculating the fogging risk level based on the air conditioning operation parameters;

[0062] S400: Match a corresponding defog strategy according to the vehicle operating condition and the fogging risk level, and perform defog and defrost based on the defog strategy.

[0063] It should be noted that in this application, different defogging means are matched based on different vehicle operating conditions, and the execution intensity of the means taken is determined based on the fogging risk level. That is, this application divides the defogging strategy into different defogging means by adjusting different air-conditioning equipment such as evaporators, blowers, compressors, etc., and then grades the different defogging means according to the defogging intensity required.

[0064] A solution based on the present application automatically identifies and judges the vehicle operating conditions and the fogging risk level by obtaining the air-conditioning ambient temperature, the temperature inside the vehicle and the light intensity. There is no need to set up multiple humidity sensors to accurately calculate the glass temperature and dew point temperature, which can reduce the space occupied by equipment and save costs. Different defogger means or prevention means can be matched according to different vehicle operating conditions, and the execution intensity of the means taken can be determined according to the fogging risk level. Glass fogging can be prevented at any time, so that a fog-free effect can be achieved throughout the driving process, reducing the safety hazards caused by glass fogging and improving safety.

[0065] See also Figure 2 , Figure 2 yes Figure 1 Detailed flow chart of step S200 in the embodiment. In some embodiments, the vehicle operating conditions include at least spring and autumn conditions, winter conditions, and extreme cold conditions, and matching the vehicle operating conditions based on the air conditioning operating parameters includes:

[0066] S201, configuring temperature reference ranges under different vehicle operating conditions;

[0067] S202, matching the ambient temperature with the temperature reference range;

[0068] S203: Determine the vehicle operating condition corresponding to the matched temperature reference range.

[0069] Among them, the preset ambient temperature range corresponding to the spring and autumn operating conditions can be 5℃~15℃, the preset ambient temperature range corresponding to the winter operating conditions can be -10℃~0℃, and the preset ambient temperature range corresponding to the extreme cold operating conditions can be below -10℃. It should be noted that the preset ambient temperature range corresponding to each vehicle operating condition can be adjusted, and it is only explained here as an example.

[0070] Furthermore, the corresponding defog strategies are matched according to the vehicle operating conditions and the fogging risk level, including:

[0071] In spring and autumn operating conditions, when the fogging risk level is greater than the preset risk level, the evaporator temperature is lowered and the heater temperature is increased.

[0072] It should be noted that in spring and autumn working conditions, the air is cooled and dehumidified through the evaporator, heated by the heater to increase the temperature and reduce the relative humidity. The condensation heat of the refrigerant is completely carried away by the air flowing through the heater, and its outlet air temperature cannot be adjusted.

[0073] In winter conditions, when the fogging risk level is greater than the preset risk level, the window blowing air outlet temperature is increased.

[0074] In extremely cold working conditions, when the fogging risk level is greater than the preset risk level, the window blowing air outlet temperature is increased and the window blowing damper air volume is adjusted to the maximum value.

[0075] It can be understood that the defog strategy adopted in the present application does not change the air outlet pattern, which can reduce the impact on the driver and ensure the driver's comfort during the defog process.

[0076] See also Figure 3 , Figure 3 yes Figure 1 Another detailed flow chart of step S200 in the embodiment. Further, in some embodiments, the vehicle operating condition also includes summer conditions, and the temperature reference range corresponding to the summer conditions can be above 25°C. In order to more accurately judge the vehicle operating condition, the air conditioning operating parameters can also include a target temperature, which refers to the temperature set by the user for the air conditioner. Based on this, the vehicle operating condition includes at least summer conditions, spring and autumn conditions, winter conditions, and extreme cold conditions. Matching the vehicle operating condition based on the air conditioning operating parameters includes:

[0077] S211, determining whether the temperature inside the vehicle is greater than the target temperature;

[0078] S212, configuring temperature reference ranges under different vehicle operating conditions;

[0079] S213, when the temperature inside the vehicle is greater than the target temperature, determining whether the ambient temperature matches the temperature reference range of summer operating conditions or spring and autumn operating conditions; when the temperature inside the vehicle is less than the target temperature, determining whether the ambient temperature matches the winter operating conditions or extreme cold operating conditions;

[0080] S214: Determine the vehicle operating condition corresponding to the matched temperature reference range.

[0081] It can be understood that in this embodiment, when matching the vehicle operating conditions, not only the ambient temperature is required to meet the corresponding temperature reference range, but also the target temperature and the temperature inside the vehicle are required to meet the relationship requirements under the corresponding conditions. That is, in summer conditions and spring and autumn conditions, the air conditioner is set to cooling mode and the ambient temperature meets the temperature reference range, and in winter conditions and extreme cold conditions, the air conditioner is set to heating mode and the ambient temperature meets the temperature reference range. This can further enhance the accuracy of judging the vehicle operating conditions.

[0082] Furthermore, matching the corresponding defogger strategy according to the vehicle operating condition and the fogging risk level includes: under summer conditions, when the fogging risk level is greater than a preset risk level, lowering the evaporator temperature.

[0083] See also Figure 4 , Figure 4 yes Figure 1 Detailed flow chart of step S300 in the embodiment. In some embodiments, the fogging risk level includes at least high risk, medium risk and low risk. In the case of high risk and medium risk, the corresponding defog strategy is matched, and in the case of low risk, the air conditioner is maintained in normal operation. Calculating the fogging risk level based on the in-vehicle environmental parameters and the out-of-vehicle environmental parameters includes:

[0084] S301, calculating the glass temperature according to the light intensity, the ambient temperature and the temperature inside the vehicle.

[0085] Specifically, the glass temperature is calculated according to the following formula (1):

[0086] T=K sun T sun +K env T env +K in T in , (1)

[0087] Where T is the glass temperature, T sun is the light intensity, K sun is the illumination compensation coefficient corresponding to the illumination intensity, T env is the ambient temperature, K env is the ambient temperature compensation coefficient corresponding to the ambient temperature, T in is the temperature inside the car, K inis the interior temperature compensation coefficient corresponding to the interior temperature of the vehicle.

[0088] It should be noted that the illumination compensation coefficient, the ambient temperature compensation coefficient, and the in-vehicle temperature compensation coefficient can all be predetermined values, and the illumination compensation coefficient, the ambient temperature compensation coefficient, and the in-vehicle temperature compensation coefficient can all be calibrated by a control variable method.

[0089] For example, the calibration method of the ambient temperature compensation coefficient may be: at two different times, keep the light intensity and the temperature inside the vehicle unchanged, modify the ambient temperature, and obtain the glass temperatures T1 and T2 corresponding to the two different times through the temperature sensor, and the ambient temperature T env1 With T env2 Substituting the data collected at two different times into formula (1) and taking the difference, we can get T2-T1=K env (T env2 -T env1 ), due to T2, T1, T env1 and T env2 All are known, so the ambient temperature compensation coefficient K can be calculated env .

[0090] Similarly, when any one of the parameters of ambient temperature, vehicle interior temperature, and light intensity changes and the other parameters remain unchanged, the above calibration method can be used to obtain K sun and K in , which will not be described in detail here. In this way, by calibrating and calculating the compensation coefficient, a feasible formula (1) can be obtained, and then the glass temperature of the windshield can be calculated according to the formula (1).

[0091] S302: preset a relative humidity upper limit value and calculate the dew point temperature according to the vehicle interior temperature and the relative humidity upper limit value.

[0092] It should be noted that the present application does not need to accurately calculate the dew point temperature through a humidity sensor, but performs fuzzy calculation through a preset relative humidity upper limit value, and the relative humidity upper limit value can be adjusted by the user. The present application uses fuzzy calculation to calculate the glass temperature, and the relative humidity upper limit value can be set to a value that is higher than the actual relative humidity for calculation. The relative humidity upper limit value can range from 75% to 100%, and the user can adjust it according to different regions and seasons. For example, in the summer in the southern coastal areas, the relative humidity upper limit value can be set to 100%, and in the winter in the northwest region, the relative humidity upper limit value can be set to 75%. The dew point temperature can be calculated by a table lookup method or formula. The calculation method of the dew point temperature based on temperature and relative humidity is familiar to those skilled in the art, and will not be repeated here.

[0093] S303, calculating the temperature difference between the glass temperature and the dew point temperature;

[0094] S304: Match the fogging risk level according to the temperature difference.

[0095] It is understandable that the higher the relative humidity, the closer the dew point temperature is to the temperature inside the car, and the higher the calculated risk of fogging. The application sets a relatively high upper limit value of relative humidity, which does not require accurate calculation of the dew point temperature, does not require additional humidity sensors, and reduces the algorithm correction process. Since the calculated risk of fogging is relatively high, it can respond to the defogging demand in a timely manner and match a relatively effective defogging strategy to ensure that defogging is in place.

[0096] In some embodiments, matching the fogging risk level according to the temperature difference includes:

[0097] A first temperature difference threshold and a second temperature difference threshold are preset, and the first temperature difference threshold is smaller than the second temperature difference threshold;

[0098] Determine whether the temperature difference is less than a first temperature difference threshold;

[0099] It is determined whether the temperature difference is less than a second temperature difference threshold.

[0100] Among them, when the temperature difference is less than the first temperature difference threshold, the fogging risk level is determined to be high risk; when the temperature difference is greater than or equal to the first temperature difference threshold, and the temperature difference is less than the second temperature difference threshold, the fogging risk level is determined to be medium risk; when the temperature difference is greater than or equal to the second temperature difference threshold, the fogging risk level is determined to be low risk.

[0101] See also Figure 5 , Figure 5 yes Figure 1 Schematic diagram of the principle of step S300 in the embodiment. Specifically, it can be determined whether the temperature difference is less than the first temperature difference threshold value first, if so, it is determined as high risk, if not, it is further determined whether the temperature difference is less than the second temperature difference threshold value, if so, it is determined as medium risk, otherwise it is determined as low risk.

[0102] In some embodiments, the defogging strategy corresponding to the vehicle operating conditions and the fogging risk level includes:

[0103] In spring and autumn working conditions, when the fogging risk level is high risk, the evaporator temperature is lowered to the first evaporation temperature, and the heater temperature is increased to the first heating temperature; when the fogging risk level is medium risk, the evaporator temperature is lowered to the second evaporation temperature, and the heater temperature is increased to the second heating temperature. The first evaporation temperature can be the lower limit of the evaporator temperature, and the second evaporation temperature can be the current evaporator temperature minus the difference between the current evaporator temperature and the ambient temperature; the first heating temperature is not lower than 2 / 3 of the upper limit of the heater heating temperature, and the second heating temperature is not lower than 1 / 3 of the upper limit of the heater heating temperature.

[0104] In winter conditions, when the temperature difference is greater than or equal to the first temperature difference threshold, the window outlet temperature is increased to the first outlet temperature; when the fogging risk level is medium risk, the window outlet temperature is increased to the second outlet temperature. The first outlet temperature is not lower than 2 / 3 of the upper limit of the air conditioner outlet temperature, and the second outlet temperature is not lower than 1 / 3 of the upper limit of the air conditioner outlet temperature.

[0105] In extremely cold working conditions, when the fogging risk level is high, increase the window air outlet temperature to the third air outlet temperature and adjust the window air door air volume to the maximum value; when the fogging risk level is medium, increase the window air outlet temperature to the fourth air outlet temperature and adjust the window air door air volume to the maximum value. Among them, the third air outlet temperature is not lower than 4 / 5 of the upper limit of the air conditioner outlet temperature, and the second air outlet temperature is not lower than 3 / 5 of the upper limit of the air conditioner outlet temperature.

[0106] See also Figure 6 , Figure 6 It is a structural schematic diagram of a vehicle automatic defogger in an embodiment of the present application. In some embodiments, the present application provides a vehicle automatic defogger 10, including an acquisition module 11, a calculation module 12 and an execution module 13. Among them, the acquisition module 11 is used to obtain the air-conditioning operation parameters of the vehicle, and the air-conditioning operation parameters at least include the ambient temperature, the temperature inside the vehicle and the light intensity; the calculation module 12 is used to match the vehicle operating conditions and calculate the fogging risk level according to the air-conditioning operation parameters; the execution module 13 is used to match the corresponding defogger strategy according to the vehicle operating conditions and the fogging risk level, and perform defogger and defrost based on the defogger strategy.

[0107] In some embodiments, the calculation module 12 includes a first judgment unit and a first determination unit. The first judgment unit is used to judge whether the ambient temperature meets the temperature reference range of each vehicle operating condition, and the first determination unit is used to determine the vehicle operating condition corresponding to the temperature reference range met by the ambient temperature.

[0108] The calculation module 12 also includes a second judgment unit and a second determination unit. The second judgment unit is used to judge whether the temperature difference is less than the first temperature difference threshold. The second judgment unit is also used to judge whether the temperature difference is less than the second temperature difference threshold. The second determination unit is used to determine the fogging risk level corresponding to the temperature difference threshold satisfied by the temperature difference.

[0109] See also Figure 7 , Figure 7 4 is a schematic diagram of the structure of a vehicle in an embodiment of the present application. The vehicle may include a memory 43, a processor 42, and a computer program stored in the memory 43 and executable on the processor 42. When the processor 42 executes the program, the vehicle defogging method provided in the above embodiment is implemented.

[0110] Furthermore, the vehicle also includes a communication interface 41 and a memory 43, wherein the communication interface 41 is used for communication between the memory 43 and the processor 42. The memory 43 is used to store a computer program that can be run on the processor 42. The memory 43 may include a high-speed RAM memory 43, and may also include a non-volatile memory 43 (non-volatile memory), such as at least one disk memory 43.

[0111] If the memory 43, the processor 42 and the communication interface 41 are implemented independently, the communication interface 41, the memory 43 and the processor 42 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 7 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0112] In some embodiments, the present application provides a computer-readable storage medium on which a vehicle automatic defog program is stored. When the vehicle automatic defog program is executed by a processor, the steps of the above-mentioned vehicle automatic defog method are implemented.

[0113] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for a device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods of various embodiments of the present invention.

[0114] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vehicle automatic defogging method, characterized in that: The following steps are involved: Acquiring air conditioning operating parameters of the vehicle, wherein the air conditioning operating parameters at least include ambient temperature, vehicle interior temperature, and light intensity; matching a vehicle operating condition based on the air conditioning operating parameters; Calculating a fogging risk level based on the air conditioning operating parameters; A corresponding defog strategy is matched according to the vehicle operating condition and the fogging risk level, and defog and defrost are performed based on the defog strategy.

2. The vehicle automatic defogging method according to claim 1, characterized in that: The vehicle operating conditions at least include spring and autumn conditions, winter conditions, and extreme cold conditions, and the matching of the vehicle operating conditions based on the air conditioning operating parameters includes: Configure the temperature reference range under different vehicle operating conditions; matching the ambient temperature to the temperature reference range; Determine the vehicle operating condition corresponding to the matched temperature reference range.

3. The automatic vehicle defogging method according to claim 2, characterized in that: The defogging strategy corresponding to the vehicle operating condition and the fogging risk level includes: Under the spring and autumn working conditions, when the fogging risk level is greater than the preset risk level, the evaporator temperature is lowered and the heater temperature is increased; Under the winter working condition, when the fogging risk level is greater than the preset risk level, increasing the window blowing air outlet temperature; Under the extremely cold working condition, when the fogging risk level is greater than the preset risk level, the window blowing air outlet temperature is increased, and the window blowing damper air volume is adjusted to a maximum value.

4. The vehicle automatic defogging method according to claim 2, characterized in that: The fogging risk level includes at least high risk, medium risk and low risk, and the calculation of the fogging risk level based on the in-vehicle environment parameters and the out-vehicle environment parameters includes: Calculating the glass temperature according to the light intensity, the ambient temperature and the temperature inside the vehicle; Presetting a relative humidity upper limit value and calculating a dew point temperature according to the vehicle interior temperature and the relative humidity upper limit value; Calculating a temperature difference between the glass temperature and the dew point temperature; The fogging risk level is matched according to the temperature difference.

5. The vehicle automatic defogging method according to claim 4, characterized in that: The matching of the fogging risk level according to the temperature difference comprises: Preset a first temperature difference threshold and a second temperature difference threshold, wherein the first temperature difference threshold is smaller than the second temperature difference threshold; Determining whether the temperature difference is less than the first temperature difference threshold; Determining whether the temperature difference is less than the second temperature difference threshold; When the temperature difference is less than the first temperature difference threshold, determining the fogging risk level as high risk; When the temperature difference is greater than or equal to the first temperature difference threshold, and the temperature difference is less than the second temperature difference threshold, the fogging risk level is determined to be medium risk; When the temperature difference is greater than or equal to the second temperature difference threshold, the fogging risk level is determined to be low risk.

6. The vehicle automatic defogging method according to claim 4 or 5, characterized in that: Calculating the glass temperature according to the light intensity, ambient temperature and vehicle interior temperature includes: Calculate the glass temperature according to the following formula: T=KsunTsun+KenvTenv+KinTin Among them, T is the glass temperature, Tsun is the light intensity, Ksun is the light compensation coefficient corresponding to the light intensity, Tenv is the ambient temperature, Kenv is the ambient temperature compensation coefficient corresponding to the ambient temperature, Tin is the in-vehicle temperature, and Kin is the in-vehicle temperature compensation coefficient corresponding to the in-vehicle temperature.

7. The vehicle automatic defogging method according to claim 4 or 5, characterized in that: The upper limit of relative humidity ranges from 75% to 100%.

8. The vehicle automatic defogging method according to claim 5, characterized in that: The defogging strategy corresponding to the vehicle operating condition and the fogging risk level includes: Under the spring and autumn working conditions, when the fogging risk level is high risk, the evaporator temperature is lowered to the first evaporation temperature, and the heater temperature is increased to the first heating temperature; when the fogging risk level is medium risk, the evaporator temperature is lowered to the second evaporation temperature, and the heater temperature is increased to the second heating temperature; Under the winter working condition, when the temperature difference is greater than or equal to the first temperature difference threshold, the window blowing air outlet temperature is increased to the first air outlet temperature; when the fogging risk level is medium risk, the window blowing air outlet temperature is increased to the second air outlet temperature; Under the extremely cold working conditions, when the fogging risk level is high risk, the window blowing air outlet temperature is increased to the third air outlet temperature and the window blowing damper air volume is adjusted to the maximum value; when the fogging risk level is medium risk, the window blowing air outlet temperature is increased to the fourth air outlet temperature and the window blowing damper air volume is adjusted to the maximum value.

9. A vehicle automatic defogger, characterized in that: include: An acquisition module, used to acquire the air conditioning operating parameters of the vehicle, wherein the air conditioning operating parameters at least include the ambient temperature, the temperature inside the vehicle, and the light intensity; A calculation module, used for matching the vehicle operating conditions and calculating the fogging risk level according to the air conditioning operating parameters; An execution module is used to match a corresponding defogger strategy according to the vehicle operating condition and the fogging risk level, and perform defogger and defrost based on the defogger strategy.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a vehicle automatic defogger program, which, when executed by a processor, implements the steps of the vehicle automatic defogger method according to any one of claims 1 to 8.

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