Vehicle lamp fogging simulation verification method and device

Abstract

The invention discloses a vehicle lamp fogging simulation verification method and device, and relates to the technical field of automobiles, the vehicle lamp fogging simulation verification method comprises the following steps: processing a vehicle in a first processing mode for a first preset time to obtain a first preprocessed vehicle; processing the first preprocessed vehicle in a second processing mode for a second preset time to obtain a second preprocessed vehicle; obtaining a water vapor condensation condition in a vehicle lamp of the second treatment vehicle; wherein the difference value between the temperature of the vehicle lamp in the first processing mode and the temperature of the vehicle lamp in the second processing mode is larger than a first temperature threshold value. According to the method, the vehicle is firstly placed in the relatively high temperature environment and then placed in the relatively low temperature environment, so that the relative temperature difference between the high temperature environment and the low temperature environment reaches more than 10 DEG C, and a scene in which the vehicle lamp is easy to generate water vapor condensation is simulated; and water vapor in the air in the automobile lamp with higher temperature is easily condensed on the inner wall of the automobile lamp with lower temperature to form water mist.

Description

Technical Field

[0001] The present application relates to the technical field of automobiles, and particularly relates to a method and device for simulating and verifying fogging of vehicle headlights. Background Art

[0002] Fogging of vehicle headlights can easily lead to a deterioration of the vehicle lighting effect, affect the service life of the headlights, and even pose potential safety hazards and risks such as the inability to emit warning signals normally.

[0003] Existing factory inspections of vehicles usually cannot accurately simulate the fogging situation of headlights under actual road conditions, resulting in qualified inspections for factory vehicles, but fogging of the lamps often occurs after actual vehicle sales, leading to a deterioration of the vehicle lighting effect and limited functions. Summary of the Invention

[0004] The present application provides a method and device for simulating and verifying fogging of vehicle headlights to solve the problem of inability to accurately simulate the fogging situation of headlights under actual road conditions.

[0005] In a first aspect, the present application provides a method for simulating and verifying fogging of vehicle headlights, including the following steps:

[0006] Processing the vehicle in a first processing mode for a first preset time to obtain a first preprocessed vehicle;

[0007] Processing the first preprocessed vehicle in a second processing mode for a second preset time to obtain a second preprocessed vehicle;

[0008] Obtaining the water vapor condensation situation inside the headlights of the second processed vehicle;

[0009] Wherein, the difference between the temperature of the headlights in the first processing mode and the temperature of the headlights in the second processing mode is greater than a first temperature threshold, and the first temperature threshold is 10 - 20°C.

[0010] In the present application, by processing the vehicle in a first processing mode for a first preset time to obtain a first preprocessed vehicle, and then processing the first preprocessed vehicle in a second processing mode for a second preset time to obtain a second preprocessed vehicle, with the difference between the temperature of the headlights in the first processing mode and the temperature of the headlights in the second processing mode being greater than the first temperature threshold. By first placing the vehicle in a relatively high temperature environment and then in a relatively low temperature environment, a relative temperature difference of more than 10°C between the high temperature environment and the low temperature environment is achieved, simulating a scenario where water vapor condensation is likely to occur in the vehicle headlights. That is, when the temperature difference from high to low is too large, the air temperature inside the headlights decreases slowly, while the temperature of the headlight wall decreases rapidly, causing the water vapor in the warmer air inside the headlights to easily condense on the cooler inner wall of the headlights, forming water mist. Through this simulation test, the water vapor condensation situation of the vehicle headlights during actual use can be more accurately reflected, increasing the accuracy and credibility of factory inspections.

[0011] It should be noted that usually in cases where the headlight material is changed, such as the type of interior paint film, or the headlight structure is changed, such as adding a self-heating function to the inner wall of the headlight, etc., the method of the present application can be used to verify whether these changes are effective in improving fogging on the inner wall of the headlight when changes occur, and more accurately simulate the actual application scenario.

[0012] In some embodiments, the humidity inside the headlight in the first processing mode is less than the humidity inside the headlight in the second processing mode. Usually, when a vehicle goes from a high-temperature condition to a low-temperature and high-humidity condition, fogging is more likely to occur. By making the humidity inside the headlight in the first processing mode less than the humidity inside the headlight in the second processing mode, conditions are created for fogging of the vehicle headlight, and it is easier to simulate the scenario of vehicle headlight fogging when it suddenly rains in late autumn; and / or,

[0013] The first processing mode includes turning on the headlight of the vehicle in an environment of a first temperature and a first humidity, and starting the engine to idle or starting the air conditioner for heating. By turning on the headlight of the vehicle in an environment of a first temperature and a first humidity, for a fuel vehicle, starting the engine to idle or for a new energy vehicle, starting the air conditioner for heating, the working condition of heat dissipation in the cockpit at low temperature can be simulated. At this time, the heat generated by the engine or the heat generated by the air conditioning system enters the cockpit, and the vehicle's headlights are usually connected to the cockpit. Therefore, the heat entering the cockpit will slowly enter the interior of the vehicle's headlights through the breathing holes of the headlights and the heat conduction of the headlight material, causing the temperature of the headlights to rise. At the same time, the headlight also generates heat when it is turned on, and this part of the heat will also increase the temperature of the air inside the headlight and the inner surface of the headlight, and the working condition of the headlight temperature rising when the air conditioner is turned on and the headlight is turned on at a relatively low temperature can be simulated; and / or,

[0014] The second processing mode includes spraying water at a second temperature on a first pre-treated vehicle. By spraying water, the working conditions of rain or car wash can be simulated. When the vehicle is driving and then it rains or is washed, since the temperature of the headlight is higher than the ambient temperature, when it is rained on, the temperature of the rainwater will quickly reduce the temperature of the inner surface of the headlight, while the temperature of the air inside the headlight drops more slowly. Therefore, the water vapor in the relatively hot air inside the headlight meets the relatively cold headlight surface, and fogging of the headlight is more likely to occur, better simulating the actual use scenario.

[0015] In some embodiments, the humidity inside the headlight in the first processing mode is 85 - 95%, and the humidity inside the headlight in the first processing mode within this range can create humidity conditions for the air inside the headlight to fog; and / or,

[0016] The humidity inside the headlight in the second processing mode is 90 - 100%, and the humidity inside the headlight in the second processing mode within this range is more in line with the scenario of rain or car wash, and it is easier to cause fogging of the headlight; and / or,

[0017] The temperature of the vehicle lamp in the first processing mode is 20-30°C. When the temperature of the vehicle lamp in the first processing mode is within this range, it is more in line with the actual situation of the vehicle lamp temperature when the vehicle engine or air conditioner has just started running and the vehicle lamp has just been turned on; and / or,

[0018] The temperature of the vehicle lamp in the second processing mode is 8-10°C. When the temperature of the vehicle lamp in the second processing mode is within this range, it is more in line with the temperature inside the vehicle lamp after the vehicle lamp has been in the rain or washed; and / or

[0019] The first preset time is 1-2 h. When the first preset time is within this range, it is easier to stabilize the humidity and temperature inside the vehicle lamp, which is beneficial to the vehicle lamp fogging; and / or,

[0020] The second preset time is 1-10 min. When the second preset time is within this range, it can effectively reduce the temperature of the inner surface of the vehicle lamp, and at the same time maintain the temperature difference between the air inside the vehicle lamp and the inner surface of the vehicle lamp, which is beneficial to the vehicle lamp fogging; and / or,

[0021] The first temperature is 9-13°C. When the first temperature is within this range, it is more in line with the ambient temperature in the case of fogging; and / or,

[0022] The second temperature is 4-8°C. Usually, the temperature of the sprayed rainwater is 4-8°C. When spraying the outer surface of the vehicle lamp, the distance between the nozzle and the vehicle lamp is 10-20 cm. The temperature of the inner surface of the vehicle lamp can be reduced through the outer surface of the vehicle lamp, and the temperature of the air inside the vehicle lamp decreases more slowly than the temperature of the inner surface of the vehicle lamp. Therefore, there is a temperature difference between the air inside the vehicle lamp and the inner surface of the vehicle lamp, and it is easier to fog.

[0023] In some embodiments, before the vehicle is processed in the first processing mode for the first preset time to obtain the first preprocessed vehicle, it further includes:

[0024] Processing the vehicle in the third processing mode for the third preset time to obtain the third processed vehicle;

[0025] Processing the third processed vehicle in the fourth processing mode for the fourth preset time to obtain the fourth processed vehicle;

[0026] Wherein, the difference between the temperature in the third processing mode and the temperature in the fourth processing mode is greater than the second temperature threshold, and the second temperature threshold is 10-15°C;

[0027] The humidity inside the vehicle lamp in the third processing mode is less than the humidity inside the vehicle lamp in the fourth processing mode.

[0028] By changing the environment from high temperature and low humidity to low temperature and high humidity, it is easier to induce fogging of the vehicle lamp when stimulated at a temperature difference of 10 - 15°C, which can further simulate the fogging situation of the vehicle lamp when the vehicle moves from a warm and dry basement environment to a humid and cold road environment.

[0029] In some embodiments, the temperature of the third treatment mode is 21 - 25°C. Within this range, the temperature of the third treatment mode is more in line with the temperature range of the basement; and / or,

[0030] the temperature of the fourth treatment mode is 9 - 13°C. Within this range, the temperature of the fourth treatment mode is more in line with the actual temperature of the road in autumn and winter; and / or,

[0031] the humidity of the third treatment mode is 55 - 70%. Within this range, the humidity of the third treatment mode is more in line with the humidity conditions of the basement; and / or,

[0032] the humidity of the fourth treatment mode is 85 - 95%. Within this range, the humidity of the fourth treatment mode is more in line with the actual humidity of the road in the early morning and evening in autumn and winter; and / or,

[0033] the third preset time is 10 - 24h. Within this range, the temperature and humidity of the vehicle lamp can be made consistent with the environmental temperature and humidity; and / or,

[0034] the fourth preset time is 10 - 24h. Within this range, the temperature and humidity of the vehicle lamp can be made consistent with the environmental temperature and humidity.

[0035] In some embodiments, obtaining the water vapor condensation situation inside the vehicle lamp of the second treated vehicle includes:

[0036] Treating the second pre - treated vehicle in the fifth treatment mode for the fifth preset time to obtain the fifth treated vehicle;

[0037] Obtaining the water vapor condensation situation inside the vehicle lamp of the fifth treated vehicle;

[0038] wherein, the time interval between the second treatment mode and the fifth treatment mode is less than or equal to the sixth preset time;

[0039] the temperature of the fifth treatment mode is 9 - 13°C.

[0040] After water spraying, placing the vehicle in an environment of 9 - 13°C can prevent the temperature of the inner wall of the vehicle lamp from rising rapidly at low temperatures, maintaining the temperature difference between the air inside the vehicle lamp and the inner surface of the vehicle lamp, thereby inducing fogging of the vehicle lamp and simulating the fogging situation of the vehicle lamp when the vehicle is parked by the roadside under low - temperature conditions.

[0041] In some embodiments, the humidity of the fifth processing mode is 85-95%. When the humidity of the fifth processing mode is within this range, the humidity inside the vehicle lamp can be stabilized, creating suitable conditions for the vehicle lamp to fog up; and / or,

[0042] The fifth preset time is 0.5-12h. When the fifth preset time is within this range, the temperature and humidity inside the vehicle lamp can be stabilized, making it easier to observe the vehicle lamp fogging up; and / or,

[0043] The sixth preset time is 1-3min. When the sixth preset time is within this range, the influence of the external environment during the test after water spraying, especially when testing in summer, on the temperature of the vehicle lamp can be reduced, and the failure of the vehicle lamp to fog up caused by the rapid increase in the temperature of the vehicle lamp can be reduced, controlling the temperature difference and humidity of the vehicle lamp.

[0044] In some embodiments, the obtaining of the water vapor condensation situation inside the vehicle lamp of the second processed vehicle includes:

[0045] Judging whether the anti-fogging performance of the vehicle lamp is qualified according to the proportion of the area of water vapor condensation inside the vehicle lamp lens of the second processed vehicle in the area of the entire vehicle lamp lens.

[0046] The essence of the fogging simulation verification method is to judge whether the vehicle lamp fogs up in the experimental environment. Theoretically, it is hoped to obtain a vehicle lamp with fogging meeting the requirements. By controlling a strict fogging test environment, a vehicle lamp with fogging meeting the requirements is obtained. According to the proportion of the area of water vapor condensation inside the vehicle lamp lens of the second processed vehicle in the area of the entire vehicle lamp lens, it can be judged whether the fogging of the vehicle lamp meets the requirements.

[0047] In some embodiments, the judging whether the anti-fogging performance of the vehicle lamp is qualified according to the proportion of the area of water vapor condensation inside the vehicle lamp lens of the second processed vehicle in the area of the entire vehicle lamp lens includes:

[0048] If within 15 minutes after the end of the second processing mode, the proportion of the area of water vapor condensation inside the vehicle lamp lens of the second processed vehicle in the area of the entire vehicle lamp lens is less than the first preset ratio, it is judged that the anti-fogging performance of the vehicle lamp is qualified.

[0049] Generally, the first preset ratio is 0.25-0.3, that is, after the vehicle lamp fogs up, it needs to dissipate to 25%-30% of the lens area within 15 minutes, indicating that the fogging dissipation of the vehicle lamp is qualified and meets the requirements. Further, 30 minutes after the end of the second processing mode, it needs to dissipate to 20%-25% of the lens area; 60 minutes after the end of the second processing mode, it needs to dissipate to 15%-20% of the lens area; 2 hours after the end of the second processing mode, it needs to dissipate to 10%-15% of the lens area; 4 hours after the end of the second processing mode, it needs to dissipate to 5%-10% of the lens area.

[0050] In a second aspect, the present application provides a vehicle headlight fogging simulation device, including:

[0051] A first execution unit configured to process a vehicle in a first processing mode for a first preset time to obtain a first pre-processed vehicle;

[0052] A second execution unit configured to process the first pre-processed vehicle in a second processing mode for a second preset time to obtain a second pre-processed vehicle; and

[0053] An acquisition unit configured to acquire the water vapor condensation condition inside the headlight of the second processed vehicle;

[0054] Wherein, the temperature difference between the headlight in the first processing mode and the headlight in the second processing mode is greater than a first temperature threshold, and the first temperature threshold is 10-20°C.

[0055] By processing the vehicle in the first processing mode for the first preset time to obtain a first pre-processed vehicle, and then processing the first pre-processed vehicle in the second processing mode for the second preset time to obtain a second pre-processed vehicle, the temperature difference between the headlight in the first processing mode and the headlight in the second processing mode is greater than the first temperature threshold. By first placing the vehicle in a relatively high temperature environment and then in a relatively low temperature environment, the relative temperature difference between the high temperature environment and the low temperature environment reaches more than 10°C, simulating a scenario where water vapor condensation is likely to occur in the vehicle headlight. That is, when the temperature difference from high to low is too large, the air temperature inside the headlight decreases slowly, while the temperature of the headlight wall decreases rapidly. As a result, the water vapor in the air with a higher temperature inside the headlight is likely to condense on the inner wall of the headlight with a lower temperature, forming water mist. Through this simulation test, the water vapor condensation situation of the vehicle headlight during actual use can be more accurately reflected, increasing the accuracy and credibility of factory inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0057] Figure 1 It is a flowchart of a vehicle headlight fogging simulation verification method according to an embodiment of the present application.

[0058] Figure 2 It is a flowchart of a vehicle headlight fogging simulation verification method according to an embodiment of the present application.

[0059] Figure 3 It is a flowchart of a vehicle headlight fogging simulation verification method according to an embodiment of the present application.

[0060] Figure 4 The flowchart of the vehicle headlight fogging simulation verification method according to an embodiment of the present application.

[0061] Figure 5 The flowchart of the vehicle headlight fogging simulation verification method according to an embodiment of the present application.

[0062] Figure 6 The schematic diagram of the vehicle headlight fogging simulation device according to an embodiment of the present application. Detailed implementation manners

[0063] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0064] Fogging of automotive headlights can easily lead to a deterioration in the vehicle lighting effect, affect the service life of the headlights, and even pose potential safety hazards and risks such as the inability to emit warning signals normally.

[0065] Existing vehicle factory inspections usually cannot accurately simulate the fogging situation of headlights under actual road conditions, resulting in the passing of factory vehicle inspections, but the fogging of lamps often occurs after actual vehicle sales, deteriorating the vehicle lighting effect and limiting functions.

[0066] In view of this, the present application provides a vehicle headlight fogging simulation verification method and device to solve the problem of the inability to accurately simulate the fogging situation of headlights under actual road conditions.

[0067] In the first aspect, as Figure 1 shown, the present application provides a vehicle headlight fogging simulation verification method, including the following steps:

[0068] S100. Process the vehicle in a first processing mode for a first preset time to obtain a first preprocessed vehicle;

[0069] S200. Process the first preprocessed vehicle in a second processing mode for a second preset time to obtain a second preprocessed vehicle;

[0070] S300. Obtain the water vapor condensation situation inside the headlights of the second processed vehicle;

[0071] Wherein, the temperature difference between the temperature of the headlights in the first processing mode and the temperature of the headlights in the second processing mode is greater than a first temperature threshold, and the first temperature threshold is 10-20°C.

[0072] In this application, the vehicle is processed in a first processing mode for a first preset time to obtain a first pre-processed vehicle; the first pre-processed vehicle is processed in a second processing mode for a second preset time to obtain a second pre-processed vehicle. The difference in the temperature of the vehicle lamp in the first processing mode and the temperature of the vehicle lamp in the second processing mode is greater than a first temperature threshold. By first placing the vehicle in a relatively high-temperature environment and then in a relatively low-temperature environment, a relative temperature difference between the high-temperature environment and the low-temperature environment of more than 10 °C is achieved, simulating a scenario where water vapor condensation is likely to occur in the vehicle lamp. That is, when the temperature difference from high to low is too large, the air temperature inside the vehicle lamp decreases slowly, while the temperature of the lamp wall of the vehicle lamp decreases rapidly, causing the water vapor in the air with a higher temperature inside the vehicle lamp to easily condense on the inner wall of the vehicle lamp with a lower temperature, forming water mist. Through this simulation test, the water vapor condensation situation of the vehicle lamp during actual use can be more accurately reflected, increasing the accuracy and credibility of factory inspections.

[0073] It should be noted that usually in cases where the vehicle lamp material is changed, such as the type of interior paint film, or the vehicle lamp structure is changed, such as adding a self-heating function to the inner wall of the vehicle lamp, the method of this application can be used to verify whether these changes are effective in improving the fogging of the inner wall of the vehicle lamp, more accurately simulating the actual application scenario.

[0074] Combined with the first aspect, in some embodiments provided by this application, the humidity inside the vehicle lamp in the first processing mode is less than the humidity inside the vehicle lamp in the second processing mode. Usually, when the vehicle goes from a high-temperature condition to a low-temperature and high-humidity condition, fogging is more likely to occur. By making the humidity inside the vehicle lamp in the first processing mode less than the humidity inside the vehicle lamp in the second processing mode, conditions for fogging of the vehicle lamp are created, making it easier to simulate the scenario where the vehicle lamp fogs up when it suddenly rains in late autumn.

[0075] Combined with the first aspect, in some embodiments provided by this application, the first processing mode includes turning on the vehicle lamp in an environment with a first temperature and a first humidity, and starting the engine to idle or starting the air conditioner for heating. By turning on the vehicle lamp in an environment with a first temperature and a first humidity, for a fuel vehicle, starting the engine to idle or for a new energy vehicle, starting the air conditioner for heating, the working condition of the cockpit heat dissipation at low temperature can be simulated. At this time, the heat generated by the engine or the heat generated by the air conditioning system enters the cockpit, and the vehicle's headlights are usually connected to the cockpit. Therefore, the heat entering the cockpit will slowly enter the interior of the vehicle's headlights through the breathing holes of the headlights and the heat conduction of the headlight material, causing the temperature of the headlights to rise. At the same time, the headlights also generate heat when turned on, and this part of the heat will also increase the temperature of the air inside the headlights and the inner surface of the headlights, simulating the working condition where the temperature of the headlights rises when the air conditioner is turned on and the headlights are turned on at a relatively low temperature.

[0076] In combination with the first aspect, in some embodiments provided by the present application, the second processing mode includes spraying water at a second temperature on a first pre-treated vehicle. By means of water spraying, working conditions such as rain or car washing can be simulated. After the vehicle travels and then encounters rain or car washing, since the temperature of the headlight is higher than the ambient temperature, when it is exposed to rain, the temperature of the rainwater will rapidly reduce the temperature of the inner surface of the headlight, while the temperature of the air inside the headlight drops more slowly. Therefore, the water vapor in the relatively hot air inside the headlight encounters the relatively cold surface of the headlight, making it easier for the headlight to fog up, thus better simulating the actual usage scenario.

[0077] In combination with the first aspect, in some embodiments provided by the present application, the humidity inside the headlight in the first processing mode is 85 - 95%. When the humidity inside the headlight in the first processing mode is within this range, it can create humidity conditions for the air inside the headlight to fog up.

[0078] In combination with the first aspect, in some embodiments provided by the present application, the humidity inside the headlight in the second processing mode is 90 - 100%. When the humidity inside the headlight in the second processing mode is within this range, it is more in line with the scenario during rain or car washing and is more likely to cause the headlight to fog up.

[0079] In combination with the first aspect, in some embodiments provided by the present application, the temperature of the headlight in the first processing mode is 20 - 30°C. When the temperature of the headlight in the first processing mode is within this range, it is more in line with the actual situation of the headlight temperature when the vehicle engine or air conditioner has just started running and the headlight has just been turned on.

[0080] In combination with the first aspect, in some embodiments provided by the present application, the temperature of the headlight in the second processing mode is 8 - 10°C. When the temperature of the headlight in the second processing mode is within this range, it is more in line with the temperature inside the headlight after the headlight has been exposed to rain or car washing.

[0081] In combination with the first aspect, in some embodiments provided by the present application, the first preset time is 1 - 2 h. When the first preset time is within this range, it is easier to stabilize the humidity and temperature inside the headlight, which is beneficial to the headlight fogging up.

[0082] In combination with the first aspect, in some embodiments provided by the present application, the second preset time is 1 - 10 min. When the second preset time is within this range, it can effectively reduce the temperature of the inner surface of the headlight while maintaining the temperature difference between the air inside the headlight and the inner surface of the headlight, which is beneficial to the headlight fogging up.

[0083] In combination with the first aspect, in some embodiments provided by the present application, the first temperature is 9 - 13°C. When the first temperature is within this range, it is more in line with the ambient temperature in the fogging-up situation.

[0084] In combination with the first aspect, in some embodiments provided by the present application, the second temperature is 4 - 8°C. Usually, the temperature of the rainwater for spraying is 4 - 8°C. When spraying the outer surface of the vehicle lamp, the distance between the nozzle and the vehicle lamp is 10 - 20 cm. The temperature of the inner surface of the vehicle lamp can be reduced through the outer surface of the vehicle lamp. However, the temperature of the air inside the vehicle lamp decreases more slowly than the temperature of the inner surface of the vehicle lamp. Therefore, there is a temperature difference between the air inside the vehicle lamp and the inner surface of the vehicle lamp, making it easier to fog up.

[0085] In combination with the first aspect, as Figure 2 shown, in some embodiments provided by the present application, before obtaining the first pre-treated vehicle by treating the vehicle in the first treatment mode for the first preset time, it further includes:

[0086] S001: Treat the vehicle in the third treatment mode for the third preset time to obtain a third treated vehicle;

[0087] S002: Treat the third treated vehicle in the fourth treatment mode for the fourth preset time to obtain a fourth treated vehicle;

[0088] Wherein, the difference between the temperature in the third treatment mode and the temperature in the fourth treatment mode is greater than the second temperature threshold, and the second temperature threshold is 10 - 15°C;

[0089] The humidity inside the vehicle lamp in the third treatment mode is less than the humidity inside the vehicle lamp in the fourth treatment mode.

[0090] By changing from a high-temperature and low-humidity environment to a low-temperature and high-humidity environment, and exciting the vehicle lamp to fog up more easily under a temperature difference of 10 - 15°C, the fogging situation of the vehicle lamp when the vehicle changes from a warm and dry basement environment to a wet and cold road environment can be further simulated.

[0091] In combination with the first aspect, in some embodiments provided by the present application, the temperature in the third treatment mode is 21 - 25°C. When the temperature in the third treatment mode is within this range, it is more in line with the temperature range of the basement. In combination with the first aspect, in some embodiments provided by the present application, the temperature in the fourth treatment mode is 9 - 13°C. When the temperature in the fourth treatment mode is within this range, it is more in line with the actual temperature of the road in autumn and winter seasons.

[0092] In combination with the first aspect, in some embodiments provided by the present application, the humidity in the third treatment mode is 55 - 70%. When the humidity in the third treatment mode is within this range, it is more in line with the humidity conditions of the basement.

[0093] In combination with the first aspect, in some embodiments provided by the present application, the humidity in the fourth treatment mode is 85 - 95%. When the humidity in the fourth treatment mode is within this range, it is more in line with the actual humidity of the road in the early morning and evening in autumn and winter seasons.

[0094] In combination with the first aspect, in some embodiments provided by the present application, the third preset time is 10 to 24 hours. Within this range, the temperature and humidity of the vehicle lamp can be made consistent with the ambient temperature and humidity.

[0095] In combination with the first aspect, in some embodiments provided by the present application, the fourth preset time is 10 to 24 hours. Within this range, the temperature and humidity of the vehicle lamp can be made consistent with the ambient temperature and humidity.

[0096] In combination with the first aspect, as Figure 3 shown, in some embodiments provided by the present application, the obtaining of the water vapor condensation situation inside the vehicle lamp of the second processed vehicle includes:

[0097] S301. Processing the second preprocessed vehicle in the fifth processing mode for the fifth preset time to obtain a fifth processed vehicle;

[0098] S302. Obtaining the water vapor condensation situation inside the vehicle lamp of the fifth processed vehicle;

[0099] Wherein, the time interval between the second processing mode and the fifth processing mode is less than or equal to the sixth preset time;

[0100] The temperature of the fifth processing mode is 9 to 13 °C.

[0101] After water spraying, placing the vehicle in an environment of 9 to 13 °C can prevent the temperature of the inner wall of the vehicle lamp from rising rapidly at low temperatures, maintain the temperature difference between the air inside the vehicle lamp and the inner surface of the vehicle lamp, and thus stimulate the vehicle lamp to fog, simulating the fogging situation of the vehicle lamp when the vehicle is parked by the roadside under low-temperature conditions.

[0102] In combination with the first aspect, in some embodiments provided by the present application, the humidity of the fifth processing mode is 85 to 95%. Within this range, the humidity inside the vehicle lamp can be stabilized, creating suitable conditions for the vehicle lamp to fog.

[0103] In combination with the first aspect, in some embodiments provided by the present application, the fifth preset time is 0.5 to 12 hours. Within this range, the temperature and humidity inside the vehicle lamp can be stabilized, making it easier to observe the vehicle lamp fogging.

[0104] In combination with the first aspect, in some embodiments provided by the present application, the sixth preset time is 1 to 3 minutes. Within this range, the influence of the external environment after water spraying, especially the influence of the external temperature and humidity on the temperature of the vehicle lamp during testing in summer, can be reduced, the failure of the vehicle lamp to fog caused by the too rapid rise of the vehicle lamp temperature can be reduced, and the temperature difference and humidity of the vehicle lamp can be controlled.

[0105] In combination with the first aspect, asFigure 4 As shown, in some embodiments provided by the present application, the obtaining of the water vapor condensation situation inside the vehicle lamp of the second processed vehicle includes:

[0106] S303. Determine whether the anti-fogging performance of the vehicle lamp is qualified according to the proportion of the area of water vapor condensation inside the lamp lens of the second processed vehicle in the area of the entire lamp lens.

[0107] The essence of the fogging simulation verification method is to determine whether fogging occurs on the vehicle lamp in the experimental environment. Theoretically, it is hoped to obtain a vehicle lamp with fogging meeting the requirements. By controlling a strict fogging test environment, a vehicle lamp with fogging meeting the requirements is obtained. According to the proportion of the area of water vapor condensation inside the lamp lens of the second processed vehicle in the area of the entire lamp lens, it can be determined whether the fogging of the vehicle lamp meets the requirements.

[0108] Combined with the first aspect, as Figure 5 shown, in some embodiments provided by the present application, the determining whether the anti-fogging performance of the vehicle lamp is qualified according to the proportion of the area of water vapor condensation inside the lamp lens of the second processed vehicle in the area of the entire lamp lens includes:

[0109] S3031. If within 15 minutes after the end of the second processing mode, the proportion of the area of water vapor condensation inside the lamp lens of the second processed vehicle in the area of the entire lamp lens is less than the first preset ratio, it is determined that the anti-fogging performance of the vehicle lamp is qualified.

[0110] Generally, the first preset ratio is 0.25 - 0.3, that is, after the vehicle lamp fogs up, it needs to dissipate to 25% - 30% of the lens area within 15 minutes, indicating that the fogging dissipation of the vehicle lamp meets the requirements, that is, the anti-fogging performance is qualified. Further, 30 minutes after the end of the second processing mode, it needs to dissipate to 20% - 25% of the lens area; 60 minutes after the end of the second processing mode, it needs to dissipate to 15% - 20% of the lens area; 2 hours after the end of the second processing mode, it needs to dissipate to 10% - 15% of the lens area; 4 hours after the end of the second processing mode, it needs to dissipate to 5% - 10% of the lens area.

[0111] In the second aspect, as Figure 6 shown, the present application provides a vehicle lamp fogging simulation device, including:

[0112] A first execution unit, configured to process the vehicle in a first processing mode for a first preset time to obtain a first pre-processed vehicle;

[0113] A second execution unit, configured to process the first pre-processed vehicle in a second processing mode for a second preset time to obtain a second pre-processed vehicle; and,

[0114] An obtaining unit, configured to obtain the water vapor condensation situation inside the vehicle lamp of the second processed vehicle;

[0115] Wherein, the temperature difference between the vehicle lamp in the first processing mode and the vehicle lamp in the second processing mode is greater than the first temperature threshold, and the first temperature threshold is 10-20°C.

[0116] By processing the vehicle in the first processing mode for a first preset time, a first preprocessed vehicle is obtained; by processing the first preprocessed vehicle in the second processing mode for a second preset time, a second preprocessed vehicle is obtained. The temperature difference between the vehicle lamp in the first processing mode and the vehicle lamp in the second processing mode is greater than the first temperature threshold. By first placing the vehicle in a relatively high-temperature environment and then in a relatively low-temperature environment, making the relative temperature difference between the high-temperature environment and the low-temperature environment reach more than 10°C, a scenario where water vapor condensation is likely to occur in the vehicle lamp is simulated. That is, when the temperature difference from high to low is too large, the air temperature in the vehicle lamp decreases slowly, and the temperature of the vehicle lamp wall decreases rapidly. As a result, the water vapor in the air with a higher temperature in the vehicle lamp is likely to condense on the inner wall of the vehicle lamp with a lower temperature, forming water mist. Through this simulation test, the water vapor condensation situation of the vehicle lamp during actual use can be more accurately reflected, increasing the accuracy and credibility of factory inspection.

[0117] The terms "including" and "having" and any variations thereof in the description of the specification, claims and the above-mentioned drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, device, product or equipment that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or equipment. The descriptions such as "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit that "first", "second" and "third" are of different types.

[0118] In the description of the embodiments of this application, "exemplary", "for example" or "for instance" etc. are used to indicate examples, illustrations or explanations. Any embodiment or design solution described as "exemplary", "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary", "for example" or "for instance" is intended to present relevant concepts in a specific manner.

[0119] In the description of the embodiments of this application, unless otherwise specified, " / " means "or". For example, A / B can mean A or B; "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "a plurality of" means two or more than two.

[0120] In some processes described in the embodiments of the present application, a plurality of operations or steps appear in a specific order. However, it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or may be executed in parallel. The serial numbers of the operations are only used to distinguish different operations, and the serial numbers themselves do not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0121] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they 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 application, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium as described above (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions for causing a terminal device to execute the methods described in the various embodiments of the present application.

[0122] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A method for simulating and verifying fogging of vehicle headlights, characterized in that, It includes the following steps: Process the vehicle in the first processing mode for a first preset time to obtain a first pre-processed vehicle; Process the first pre-processed vehicle in the second processing mode for a second preset time to obtain a second pre-processed vehicle; Obtain the water vapor condensation condition inside the vehicle lamp of the second processed vehicle; Wherein, the difference between the temperature of the vehicle lamp in the first processing mode and the temperature of the vehicle lamp in the second processing mode is greater than a first temperature threshold, and the first temperature threshold is 10 - 20 °C.

2. The method for simulating and verifying fogging of vehicle lamps according to claim 1, wherein: The humidity inside the vehicle lamp in the first processing mode is less than the humidity inside the vehicle lamp in the second processing mode; and / or, The first processing mode includes turning on the vehicle lamp in an environment of a first temperature and a first humidity, starting the engine to idle or starting the air conditioner for heating; and / or, The second processing mode includes performing water spraying at a second temperature on the first pre-processed vehicle.

3. The method for simulating and verifying fogging of vehicle lamps according to claim 2, wherein: The humidity inside the vehicle lamp in the first processing mode is 85 - 95%; and / or, The humidity inside the vehicle lamp in the second processing mode is 90 - 100%; and / or, The temperature of the vehicle lamp in the first processing mode is 20 - 30 °C; and / or, The temperature of the vehicle lamp in the second processing mode is 8 - 10 °C; and / or The first preset time is 1 - 2 h; and / or, The second preset time is 1 - 10 min; and / or, The first temperature is 9 - 13 °C; and / or, The second temperature is 4 - 8 °C.

4. The vehicle headlight fogging simulation verification method according to claim 1, characterized in that Before the step of processing the vehicle in the first processing mode for a first preset time to obtain a first pre-processed vehicle, it further includes: Process the vehicle in the third processing mode for a third preset time to obtain a third processed vehicle; Process the third processed vehicle in the fourth processing mode for a fourth preset time to obtain a fourth processed vehicle; Wherein, the difference between the temperature in the third processing mode and the temperature in the fourth processing mode is greater than a second temperature threshold, and the second temperature threshold is 10 - 15 °C; The humidity inside the vehicle lamp in the third processing mode is less than the humidity inside the vehicle lamp in the fourth processing mode.

5. The method for simulating and verifying fogging of vehicle lamps according to claim 4, wherein: The temperature of the third processing mode is 21 - 25 °C; and / or, The temperature of the fourth processing mode is 9 - 13 °C; and / or, The humidity of the third processing mode is 55 - 70%; and / or, The humidity of the fourth processing mode is 85 - 95%; and / or, The third preset time is 10 - 24 h; and / or, The fourth preset time is 10 - 24 h.

6. The method for simulating and verifying fogging of vehicle headlights according to claim 1, wherein The step of obtaining the water vapor condensation condition inside the vehicle lamp of the second processed vehicle includes: Process the second pre-processed vehicle in the fifth processing mode for a fifth preset time to obtain a fifth processed vehicle; Obtain the water vapor condensation condition inside the vehicle lamp of the fifth processed vehicle; Wherein, the time interval between the second processing mode and the fifth processing mode is less than or equal to a sixth preset time.

7. The method for simulating and verifying fogging of vehicle lamps according to claim 6, wherein: The temperature of the fifth processing mode is 9 - 13 °C; and / or, The humidity of the fifth processing mode is 85-95%; and / or, The fifth preset time is 0.5-12 h; and / or, The sixth preset time is 1-3 min.

8. The vehicle headlight fogging simulation verification method according to claim 1, characterized in that The obtaining of the water vapor condensation condition in the headlight of the second processed vehicle includes: Judging whether the anti-fog performance of the headlight is qualified according to the area ratio of the water vapor condensation area in the headlight lens of the second processed vehicle in the entire headlight lens.

9. The vehicle headlight fogging simulation verification method according to claim 8, wherein The judging whether the anti-fog performance of the headlight is qualified according to the area ratio of the water vapor condensation area in the headlight lens of the second processed vehicle in the entire headlight lens includes: If the area ratio of the water vapor condensation area in the headlight lens of the second processed vehicle in the entire headlight lens is less than the first preset ratio within 15 min after the end of the second processing mode, it is judged that the anti-fog performance of the headlight is qualified.

10. A vehicle headlight fogging simulation verification device, characterized in that, Including: A first execution unit, configured to process the vehicle in the first processing mode for a first preset time to obtain a first pre-processed vehicle; A second execution unit, configured to process the first pre-processed vehicle in the second processing mode for a second preset time to obtain a second pre-processed vehicle; And, An obtaining unit, configured to obtain the water vapor condensation condition in the headlight of the second processed vehicle; Wherein, the temperature difference between the headlight in the first processing mode and the headlight in the second processing mode is greater than a first temperature threshold, and the first temperature threshold is 10-20 °C.

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