Mini LED module application method, controller, medium and product

Abstract

The invention discloses a Mini LED module application method, a controller, a medium and a product. The method comprises the steps that the environment temperature, the environment humidity, the environment illumination intensity and the air particulate matter concentration are collected; determining a temperature adaptation coefficient, a condensation risk coefficient, a pollution risk coefficient and a light intensity adaptation coefficient; calculating weighted scores of the temperature adaptation coefficient, the condensation risk coefficient, the pollution risk coefficient and the light intensity adaptation coefficient to obtain a Mini LED environment adaptation index; when the Mini LED environment adaptation index is larger than a preset threshold value, a power source is connected to the Mini LED module through a relay; and when the Mini LED environment adaptation index is smaller than or equal to a preset threshold value, a power source is connected to the traditional vehicle tail lamp module through a relay. By implementing the method, the environmental adaptability of the Mini LED module is improved, and the optimal performance of the Mini LED module is ensured.

Description

Technical Field

[0001] The present application relates to the field of vehicle taillight display, and in particular to a Mini LED module application method, controller, medium and product. Background Art

[0002] With the rapid development of the automotive industry and the continuous improvement of its intelligence, the vehicle lighting system, as an important part of the safety and aesthetics of the vehicle, has attracted much attention for its technological innovation and upgrading. As a new generation of display lighting technology, Mini LED has gradually been applied to lighting systems such as vehicle taillights due to its advantages of high contrast, high brightness and low power consumption.

[0003] At present, the relevant technology mainly seals and covers the temperature difference resistant material at the connection structure of the taillight, so that the taillight has the application environment for the Mini LED module to work. At the same time, a waterproof coating is applied on the taillight shell, and sealing rings are added at key locations to improve the waterproof performance of the Mini LED module.

[0004] However, in actual use environments, Mini LED modules are often affected by complex climatic conditions. For example, in high temperature and high humidity environments, Mini LED modules are prone to condensation, affecting the light-emitting effect; in areas with severe air pollution, pollutants are easily accumulated on the surface of Mini LED modules, reducing light transmittance; and in extreme temperature environments, the life and reliability of Mini LED modules will also be significantly affected. Summary of the invention

[0005] The present application provides a Mini LED module application method, controller, medium and product, which are used to improve the environmental adaptability of the Mini LED module and ensure the optimal performance of the Mini LED module.

[0006] In a first aspect, the present application provides a Mini LED module application method, which is applied to a controller, and the method includes: collecting ambient temperature, ambient humidity, ambient light intensity and air particle concentration; determining a temperature adaptation coefficient according to the degree of deviation between the ambient temperature and the ambient temperature of a preset Mini LED working environment temperature range, the higher the degree of deviation of the ambient temperature, the lower the temperature adaptation coefficient; determining a condensation risk coefficient based on the ambient temperature, the ambient humidity and the measured temperature of the Mini LED module; matching the air particle concentration with a preset air particle concentration-pollution risk coefficient correspondence table to determine the pollution risk coefficient; determining a light intensity adaptation coefficient according to the degree of deviation of the ambient light intensity and the ambient light of a preset Mini LED display optimal lighting range, the higher the degree of deviation of the ambient light, the lower the light adaptation coefficient; calculating a weighted score of the temperature adaptation coefficient, the condensation risk coefficient, the pollution risk coefficient and the light intensity adaptation coefficient to obtain a Mini LED environmental adaptation index; when the Mini LED environmental adaptation index is greater than a preset threshold, connecting a power supply to the Mini LED module through a relay; When the LED environmental adaptability index is less than or equal to the preset threshold, the power supply is connected to the traditional taillight module through the relay.

[0007] By adopting the above technical solution, the controller collects and analyzes the ambient temperature, ambient humidity, ambient light intensity and air particle concentration in real time, calculates the Mini LED environmental adaptability index, and automatically switches the Mini LED module and the traditional taillight module accordingly. This method can switch to a more stable traditional taillight module in a harsh environment that is not suitable for the Mini LED module, avoiding possible damage or performance degradation of the Mini LED module in extreme environments. At the same time, through the weighted calculation of the temperature adaptability coefficient, condensation risk coefficient, pollution risk coefficient and light intensity adaptability coefficient, the impact of the environment on the operation of the Mini LED module is comprehensively evaluated, making the module switching more scientific and reasonable, which not only ensures the reliability of the vehicle lighting system, but also maximizes the advantages of the Mini LED module.

[0008] In combination with some embodiments of the first aspect, in some embodiments, the temperature adaptation coefficient is determined based on the degree of deviation between the ambient temperature and the ambient temperature in the preset Mini LED working ambient temperature range, and the higher the degree of deviation of the ambient temperature, the lower the temperature adaptation coefficient. Specifically, the temperature is compared with the maximum ambient temperature and the minimum ambient temperature in the preset Mini LED working ambient temperature range; when the ambient temperature is equal to the maximum ambient temperature or the ambient temperature is equal to the minimum ambient temperature, the temperature adaptation coefficient is determined to be 1; when the ambient temperature is higher than the maximum ambient temperature, the ambient temperature, the maximum ambient temperature and the minimum ambient temperature are substituted into the preset first temperature adaptation coefficient calculation formula to obtain the temperature adaptation coefficient; when the ambient temperature is lower than the minimum ambient temperature, the ambient temperature, the maximum ambient temperature and the minimum ambient temperature are substituted into the preset second temperature adaptation coefficient calculation formula to obtain the temperature adaptation coefficient.

[0009] By adopting the above technical solution, the controller adopts a segmented processing method for the calculation of the temperature adaptation coefficient, and uses two different temperature adaptation coefficient calculation formulas to handle high and low temperature conditions respectively, so as to more accurately reflect the impact of excessively high and low ambient temperatures on the working state of the Mini LED module, avoiding the distortion that may be caused by simple linear calculations.

[0010] In combination with some embodiments of the first aspect, in some embodiments, the condensation risk coefficient is determined based on the ambient temperature, the ambient humidity and the measured temperature of the Mini LED module, specifically including: inputting the ambient temperature and the ambient humidity into a preset dew point temperature calculation formula to obtain the dew point temperature; determining the temperature difference between the measured temperature and the dew point temperature; inputting the temperature difference into a preset condensation risk coefficient calculation formula to obtain the condensation risk coefficient.

[0011] By adopting the above technical solution, the controller calculates the dew point temperature and compares it with the measured temperature to evaluate the condensation risk coefficient, so that it can more accurately predict whether condensation will occur on the surface of the Mini LED module. Compared with simply considering the ambient humidity, this method takes into account the coupling relationship between ambient temperature and ambient humidity, which is more in line with the actual conditions for condensation to occur, and responds in advance before condensation occurs, preventing it from happening and effectively avoiding the damage that water vapor condensation may cause to the Mini LED module.

[0012] In combination with some embodiments of the first aspect, in some embodiments, the preset dew point temperature calculation formula is: Wherein, Td represents the dew point temperature, T represents the ambient temperature, H represents the ambient humidity, a represents the preset first coefficient, and b represents the preset second coefficient; the preset dew point temperature calculation formula is: Wherein, R represents the condensation risk coefficient, ΔT represents the temperature difference, and ΔTmax represents the preset maximum temperature difference threshold.

[0013] By adopting the above technical solution, the α(T, H) function is introduced into the preset dew point temperature calculation formula. Through the nonlinear relationship between ambient temperature and ambient humidity, combined with the preset first coefficient and the preset second coefficient, the dew point temperature under different ambient temperatures and ambient humidity can be accurately simulated. The preset dew point temperature calculation formula adopts a piecewise function form. When the temperature difference is less than or equal to 0, the condensation risk coefficient is 1, indicating that condensation is inevitable. When the temperature difference is between 0 and the preset maximum temperature difference threshold, the condensation risk coefficient decreases linearly. When the temperature difference exceeds the preset maximum temperature threshold, the condensation risk coefficient is 0, indicating that there will be no condensation. This can more accurately predict and evaluate the condensation risk, so as to take protective measures in advance.

[0014] In combination with some embodiments of the first aspect, in some embodiments, when the Mini LED environmental adaptability index is greater than a preset threshold, after the step of connecting the power supply to the Mini LED module through a relay, the method also includes: monitoring the surface temperature of the Mini LED module; determining the temperature state score of the Mini LED module based on the degree of deviation between the surface temperature and the surface temperature of a preset Mini LED working surface temperature range, the higher the surface temperature deviation, the lower the temperature state score; determining the optimized input current of the Mini LED module based on the temperature state score and a preset temperature state score-current adjustment correspondence table.

[0015] By adopting the above technical solution, after the Mini LED module starts running, the controller monitors the surface temperature in real time and calculates the temperature status score, and dynamically adjusts the input current according to the temperature status score, thereby realizing closed-loop control of the Mini LED working state. This not only avoids the heating problem caused by excessive input current, but also ensures sufficient display brightness, thereby maximizing the service life of the Mini LED module and improving the reliability of the entire vehicle lighting system.

[0016] In combination with some embodiments of the first aspect, in some embodiments, after the step of determining the temperature status score of the Mini LED module based on the degree of surface temperature deviation between the surface temperature and a preset MiniLED working surface temperature range, the method further includes: when the temperature status score is lower than a preset temperature score threshold, cutting off the power supply of the Mini LED module by the relay and turning on the traditional taillight module.

[0017] By adopting the above technical solution, when the temperature status score is lower than the preset temperature score threshold, the controller immediately cuts off the power supply of the Mini LED module and enables the traditional taillight module. This dual protection mechanism not only prevents possible damage through the Mini LED environmental adaptability index, but also detects and responds to abnormalities in the actual operation of the Mini LED module, ensuring that when the Mini LED module has abnormal heating and other potential dangerous conditions, it will switch to the more reliable traditional taillight module in time, thus ensuring the safety and reliability of the vehicle lighting system to the greatest extent.

[0018] In combination with some embodiments of the first aspect, in some embodiments, after the step of determining the optimized input current of the Mini LED module based on the temperature state score and the preset temperature state score-current adjustment correspondence table, the method also includes: recording the input current, output light intensity, surface temperature, working start time and working end time of the Mini LED module in a preset Mini LED work log; and determining the maintenance cycle of the Mini LED module based on the preset Mini LED work log.

[0019] By adopting the above technical solution, the controller records the detailed operation data of the Mini LED module to establish a complete preset Mini LED work log. The preset Mini LED work log can not only be used to analyze the working status and performance changes of the Mini LED module, but also determine the optimal maintenance cycle based on actual usage, so as to predict possible failures and performance degradation, so as to formulate a more scientific preventive maintenance plan, avoid the problem of over-maintenance or under-maintenance caused by traditional fixed-cycle maintenance, improve maintenance efficiency and reduce maintenance costs.

[0020] In a second aspect, an embodiment of the present application provides a controller, comprising: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code includes computer instructions, and the one or more processors call the computer instructions to enable the controller to execute the method described in the first aspect and any possible implementation method of the first aspect.

[0021] In a third aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when the computer program product runs on a controller, enables the controller to execute the method described in the first aspect and any possible implementation of the first aspect.

[0022] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, comprising instructions, which, when executed on a controller, cause the controller to execute the method described in the first aspect and any possible implementation of the first aspect.

[0023] It is understandable that the controller provided in the second aspect, the computer program product provided in the third aspect, and the computer storage medium provided in the fourth aspect are all used to execute the method provided in the embodiment of the present application. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.

[0024] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. By adopting the above technical solution, the controller collects and analyzes the ambient temperature, ambient humidity, ambient light intensity and air particle concentration in real time, calculates the Mini LED environmental adaptability index, and automatically switches the Mini LED module and the traditional taillight module accordingly. This method can switch to a more stable traditional taillight module in a harsh environment that is not suitable for the Mini LED module to work, avoiding possible damage or performance degradation of the Mini LED module in extreme environments. At the same time, through the weighted calculation of the temperature adaptability coefficient, condensation risk coefficient, pollution risk coefficient and light intensity adaptability coefficient, the impact of the environment on the operation of the Mini LED module is comprehensively evaluated, making the module switching more scientific and reasonable, which not only ensures the reliability of the vehicle lighting system, but also maximizes the advantages of the Mini LED module.

[0025] 2. By adopting the above technical solution, the controller calculates the dew point temperature and compares it with the measured temperature to evaluate the condensation risk factor, so as to more accurately predict whether condensation will occur on the surface of the Mini LED module. Compared with simply considering the ambient humidity, this method takes into account the coupling relationship between ambient temperature and ambient humidity, which is more in line with the actual conditions for condensation to occur, and responds in advance before condensation occurs, preventing it from happening and effectively avoiding the damage that water vapor condensation may cause to the Mini LED module.

[0026] 3. By adopting the above technical solution, after the Mini LED module starts running, the controller monitors the surface temperature in real time and calculates the temperature status score, and dynamically adjusts the input current according to the temperature status score, thereby realizing closed-loop control of the Mini LED working state, which not only avoids the heating problem caused by excessive input current, but also ensures sufficient display brightness, thereby maximizing the service life of the Mini LED module and improving the reliability of the entire vehicle lighting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a flow chart of the Mini LED module application method in the embodiment of the present application; Figure 2 is another flow chart of the Mini LED module application method in the embodiment of the present application; Figure 3 It is a schematic diagram of a physical device structure of a controller in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification of the present application, the singular expressions "one", "a kind of", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear indication to the contrary in the context. It should also be understood that the term "and / or" used in the present application refers to any or all possible combinations comprising one or more of the listed items.

[0029] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0030] The following is a description of the process of the method provided by this implementation. Figure 1 , which is a flow chart of the Mini LED module application method in an embodiment of the present application.

[0031] S101, collecting ambient temperature, ambient humidity, ambient light intensity and air particle concentration; Among them, ambient temperature refers to the temperature of the environment where the Mini LED module is located, in degrees Celsius; ambient humidity refers to the relative humidity of the environment where the Mini LED module is located, expressed in percentage; ambient light intensity refers to the light level of the environment where the Mini LED module is located, usually in lux; air particle concentration is used to indicate the content of inhalable particles in the air, including PM2.5 and PM10, in micrograms per cubic meter (μg / m 3 ) as the unit; acquisition refers to the process of obtaining the measurement value of the corresponding parameter through the sensor.

[0032] Specifically, the controller collects the ambient temperature through a temperature sensor, which is installed at an appropriate position on the Mini LED module housing, and the sampling frequency is not less than 1 time / minute. The controller collects the ambient humidity through a humidity sensor, and the humidity sensor and the temperature sensor can be integrated in the same position. The controller collects the ambient light intensity through a light sensor, and the ambient light sensor is installed in a position that is not affected by the light emission of the Mini LED module itself. The controller collects the concentration of air particles through an air quality sensor, and the air quality sensor is installed in a position that can accurately reflect the ambient air quality.

[0033] S102, determining a temperature adaptation coefficient according to a degree of deviation between the ambient temperature and an ambient temperature within a preset Mini LED operating ambient temperature range, wherein the higher the degree of deviation of the ambient temperature, the lower the temperature adaptation coefficient; Among them, the preset Mini LED working environment temperature range refers to the ambient temperature range for the normal operation of the Mini LED module specified by the manufacturer, which is usually determined by the minimum ambient temperature and the maximum ambient temperature; the degree of ambient temperature deviation refers to the degree of deviation between the ambient temperature and the preset Mini LED working environment temperature range; the temperature adaptation coefficient is used to represent the current ambient temperature to the Mini LED module's working adaptability score, and the value range is 0 to 1.

[0034] Specifically, first, the controller compares the measured ambient temperature with the preset Mini LED working environment temperature range. The preset Mini LED working environment temperature range is usually -20°C to 60°C, which is determined according to actual conditions and is not limited here.

[0035] (1) When the ambient temperature is equal to the minimum ambient temperature or the maximum ambient temperature in the preset Mini LED operating ambient temperature range, the temperature adaptation coefficient is 1; (2) When the ambient temperature exceeds the preset Mini LED operating ambient temperature range, different calculation formulas are selected according to the deviation direction: (a) When the temperature is too high, the preset first temperature adaptation coefficient calculation formula is used. The preset first temperature adaptation coefficient calculation formula is: K = (T max +ΔT1-T) / ΔT1; Where K represents the temperature adaptation coefficient, T max represents the maximum value of the environment, ΔT1 represents the maximum difference between the maximum value of the environment and the ambient temperature, and T represents the ambient temperature.

[0036] (b) When the temperature is too low, the preset second temperature adaptation coefficient calculation formula is used. The preset first temperature adaptation coefficient calculation formula is: K = (TT min +ΔT2) / ΔT2; Where K represents the temperature adaptation coefficient, T min represents the minimum value of the environment, ΔT2 represents the maximum difference between the minimum value of the environment and the ambient temperature, and T represents the ambient temperature.

[0037] Both calculation formulas take into account the nonlinear effect of temperature deviation, so that the rate at which the temperature adaptation coefficient decreases gradually accelerates as the degree of ambient temperature deviation increases.

[0038] (3) If T≤Tmin-ΔT1 or T≥Tmax+ΔT2, K=0.

[0039] Optionally, under normal circumstances, the temperature adaptation coefficient is determined based on the degree of deviation between the ambient temperature and the ambient temperature in the preset Mini LED working ambient temperature range. The higher the degree of deviation of the ambient temperature, the lower the temperature adaptation coefficient. This can be achieved in the following manner, which is not limited here: comparing the ambient temperature with the maximum ambient temperature and the minimum ambient temperature in the preset Mini LED working ambient temperature range; when the ambient temperature is equal to the maximum ambient temperature or the ambient temperature is equal to the minimum ambient temperature, determining that the temperature adaptation coefficient is 1; when the ambient temperature is higher than the maximum ambient temperature, substituting the ambient temperature, the maximum ambient temperature and the minimum ambient temperature into the preset first temperature adaptation coefficient calculation formula to obtain the temperature adaptation coefficient; when the ambient temperature is lower than the minimum ambient temperature, substituting the ambient temperature, the maximum ambient temperature and the minimum ambient temperature into the preset second temperature adaptation coefficient calculation formula to obtain the temperature adaptation coefficient.

[0040] S103, determining a condensation risk coefficient based on the ambient temperature, the ambient humidity, and the measured temperature of the Mini LED module; Among them, the measured temperature of the Mini LED module refers to the actual temperature value on the surface of the Mini LED module; the condensation risk coefficient is used to indicate the possibility of condensation, and its value range is 0 to 1.

[0041] Specifically, first, the controller substitutes the ambient temperature and ambient humidity into the preset dew point temperature calculation formula to calculate the dew point temperature under the current ambient conditions. The dew point temperature refers to the temperature at which water vapor in the air condenses into dew. Then, the controller obtains the measured temperature of the Mini LED module, which is collected in real time by a temperature sensor installed on the surface of the Mini LED module. The controller substitutes the difference between the measured temperature and the dew point temperature into the preset condensation risk coefficient calculation formula to obtain the condensation risk coefficient.

[0042] Optionally, under normal circumstances, based on the ambient temperature, the ambient humidity and the measured temperature of the Mini LED module, determining the condensation risk coefficient can be achieved in the following manner, which is not limited here: inputting the ambient temperature and the ambient humidity into a preset dew point temperature calculation formula to obtain the dew point temperature; determining the temperature difference between the measured temperature and the dew point temperature; inputting the temperature difference into a preset condensation risk coefficient calculation formula to obtain the condensation risk coefficient.

[0043] The preset dew point temperature calculation formula is: Wherein, Td represents the dew point temperature, T represents the ambient temperature, H represents the ambient humidity, a represents the preset first coefficient, and b represents the preset second coefficient; The preset dew point temperature calculation formula is: Wherein, R represents the condensation risk coefficient, ΔT represents the temperature difference, and ΔTmax represents the preset maximum temperature difference threshold.

[0044] S104, matching the air particle concentration with a preset air particle concentration-pollution risk coefficient correspondence table to determine the pollution risk coefficient; Among them, the preset air particle concentration-pollution risk factor correspondence table refers to a pre-established mapping relationship table of air particle concentration and pollution risk factor; the pollution risk coefficient is used to evaluate the degree of impact of air pollution on the Mini LED module, and the value range is 0 to 1; matching refers to finding the pollution risk coefficient corresponding to the closest air particle concentration in the preset air particle concentration-pollution risk factor correspondence table.

[0045] Specifically, the controller compares the measured air particle concentration with a preset air particle concentration-pollution risk factor correspondence table, which pre-sets the pollution risk factors corresponding to different air particle concentration ranges. For example, when the PM2.5 concentration is less than 35μg / m 3 When the PM2.5 concentration is between 35-75 μg / m 3 When the PM2.5 concentration is between 75-115 μg / m 3 When the PM2.5 concentration is greater than 115 μg / m 3 When , the pollution risk coefficient is 1. The controller obtains the pollution risk coefficient by looking up the table and performing necessary interpolation calculations. If multiple air particulates are monitored at the same time, the maximum pollution risk coefficient is taken as the final pollution risk coefficient.

[0046] S105, determining a light intensity adaptation coefficient according to the ambient light intensity and the degree of deviation of the ambient light from the preset Mini LED display optimal illumination range, wherein the higher the degree of deviation of the ambient light is, the lower the light adaptation coefficient is; Among them, the preset Mini LED display optimal lighting range represents the ambient light intensity range for the Mini LED module to achieve the best display effect, usually in lux; the degree of ambient light deviation refers to the degree of deviation between the ambient light intensity and the preset Mini LED display optimal lighting range; the light intensity adaptation coefficient is used to represent the adaptability score of the current ambient light intensity to the Mini LED module display effect, and the value range is 0 to 1.

[0047] Specifically, first, the controller compares the measured ambient light intensity with the preset Mini LED display optimal light range, which is usually 1000-5000 lux. When the ambient light intensity is within the preset Mini LED display optimal light range, the light intensity adaptation coefficient is 1; when the ambient light intensity exceeds the preset Mini LED display optimal light range, the light adaptation coefficient is calculated according to the deviation direction and degree of deviation: when the ambient light intensity is too strong, the display content may be affected by ambient light interference; when the ambient light intensity is too weak, the display content may be too dazzling. The calculation of the light adaptation coefficient adopts a nonlinear attenuation function, so that the light adaptation coefficient decreases rapidly under extreme lighting conditions.

[0048] S106, calculating a weighted score of the temperature adaptability coefficient, the condensation risk coefficient, the pollution risk coefficient, and the light intensity adaptability coefficient to obtain a Mini LED environment adaptability index; Among them, the weighted score refers to the comprehensive calculation result after assigning different weights to the temperature adaptability coefficient, condensation risk coefficient, pollution risk coefficient and light intensity adaptability coefficient according to their importance; the weight refers to the relative importance of the temperature adaptability coefficient, condensation risk coefficient, pollution risk coefficient and light intensity adaptability coefficient in the comprehensive evaluation; the Mini LED environmental adaptability index is used to represent the score of the comprehensive adaptability of the Mini LED module in the current environment, and the value range is 0 to 1.

[0049] Specifically, the controller assigns weights to the temperature adaptability coefficient, condensation risk coefficient, pollution risk coefficient, and light intensity adaptability coefficient, respectively. For example, the weight of the temperature adaptability coefficient is 0.35, the weight of the condensation risk coefficient is 0.3, the weight of the pollution risk coefficient is 0.15, and the weight of the light intensity adaptability coefficient is 0.2. The weight distribution is determined based on the degree of influence of each factor coefficient on the reliability and display effect of the Mini LED module, and is not limited here. The controller multiplies the coefficient of each factor by the corresponding weight and sums them to obtain the final Mini LED environmental adaptability index. The calculation process also takes into account the interaction between the coefficients of each factor, such as the combined effect of ambient temperature and ambient humidity.

[0050] S107, when the Mini LED environment adaptability index is greater than a preset threshold, connecting the power supply to the Mini LED module through a relay; Among them, the preset threshold is the critical value used to judge whether the current environmental conditions are suitable for the operation of the Mini LED module, which is usually set between 0.6-0.8; the relay refers to a switching device used to control the on and off of the circuit; power access refers to the process of supplying power to the Mini LED module; the Mini LED module refers to a display unit composed of multiple micro LEDs.

[0051] Specifically, first, the controller compares the calculated Mini LED environmental adaptability index with a preset threshold value (such as 0.7). When the Mini LED environmental adaptability index is greater than the preset threshold value, it indicates that the current environmental conditions are suitable for the Mini LED module to work, and the controller sends a closing signal to the relay, and after the relay is closed, the power supply is connected to the Mini LED module. During the power supply connection process, the controller also executes a soft start procedure, that is, by gradually increasing the power supply current, to avoid sudden power-on and shock to the Mini LED module.

[0052] S108. When the Mini LED environmental adaptability index is less than or equal to the preset threshold, the power supply is connected to the traditional taillight module through the relay.

[0053] Among them, the traditional taillight module refers to a lighting device using conventional LEDs or bulbs; the power access process refers to the operation of connecting the power supply to the traditional taillight module through relay switching; the preset threshold is the same as the definition in step S107; the MiniLED environmental adaptability index is less than or equal to the preset threshold, which means that the current environmental conditions are not suitable for the operation of the Mini LED module.

[0054] Specifically, when the Mini LED environmental adaptation index is less than or equal to the preset threshold, the controller sends a signal to the relay to disconnect the Mini LED module, waits for the disconnection confirmation, and then sends a signal to connect the traditional taillight module. The switching process adopts the "break then connect" sequence to avoid powering on the two modules at the same time. After the switch is completed, the controller will continue to monitor the environmental parameters. When the Mini LED environmental adaptation index exceeds the preset threshold again and lasts for a certain period of time (such as 5 minutes), it will switch back to the MiniLED module to avoid frequent switching and cause losses.

[0055] By adopting the above technical solution, the controller collects and analyzes the ambient temperature, ambient humidity, ambient light intensity and air particle concentration in real time, calculates the Mini LED environmental adaptability index, and automatically switches the Mini LED module and the traditional taillight module accordingly. This method can switch to a more stable traditional taillight module in a harsh environment that is not suitable for the Mini LED module, avoiding possible damage or performance degradation of the Mini LED module in extreme environments. At the same time, through the weighted calculation of the temperature adaptability coefficient, condensation risk coefficient, pollution risk coefficient and light intensity adaptability coefficient, the impact of the environment on the operation of the Mini LED module is comprehensively evaluated, making the module switching more scientific and reasonable, which not only ensures the reliability of the vehicle lighting system, but also maximizes the advantages of the Mini LED module.

[0056] The following is a more detailed description of the process of the method provided by this implementation. Figure 2 , is another flow chart of the Mini LED module application method in the embodiment of the present application.

[0057] After step S107, the following steps may or may not be performed, which is not limited here.

[0058] S201, monitoring the surface temperature of the Mini LED module; Among them, the surface temperature of the Mini LED module refers to the temperature value actually measured on the outer surface of the Mini LED module, in degrees Celsius; monitoring refers to the process of continuously collecting the surface temperature through a surface temperature sensor; the surface temperature sensor refers to a device installed on the surface of the Mini LED module for measuring the surface temperature.

[0059] Specifically, the controller continuously collects the surface temperature through multiple temperature sensors (usually no less than 4) arranged at key positions on the surface of the Mini LED module. The sampling period is 100ms, and the measurement accuracy of the surface temperature is 0.1°C. These surface temperature sensors are distributed in different areas of the surface of the Mini LED module, including the light-emitting unit dense area, the drive circuit area, the heat sink surface, etc. The controller performs real-time analysis on the collected multi-point surface temperatures, and calculates the average value after eliminating abnormal values ​​as the surface temperature of the current Mini LED module.

[0060] S202, determining a temperature status score of the Mini LED module according to a degree of deviation between the surface temperature and a surface temperature within a preset Mini LED working surface temperature range, wherein the higher the degree of deviation of the surface temperature, the lower the temperature status score; Among them, the preset Mini LED working surface temperature range refers to the surface temperature range for safe operation of the Mini LED module specified by the manufacturer; the degree of surface temperature deviation refers to the difference between the surface temperature of the Mini LED module and the preset Mini LED working surface temperature range; the temperature status score is used to represent the evaluation score of the current working surface temperature status of the Mini LED module, and the value range is 0 to 100.

[0061] Specifically, first, the controller compares the measured surface temperature with the preset Mini LED working surface temperature range (usually 0°C to 85°C). When the surface temperature is within the preset Mini LED working surface temperature range, the temperature state score is calculated based on the proximity of the surface temperature to the optimal working temperature in the preset Mini LED working surface temperature range (usually 25°C), and the temperature state score is 100 when it is closest. When the surface temperature exceeds the preset Mini LED working surface temperature range, the temperature state score is calculated using a piecewise function: when the surface temperature exceeds the maximum value of the preset Mini LED working surface temperature range, it is reduced by 10 points for every 1°C increase; when the surface temperature is lower than the minimum value of the preset Mini LED working surface temperature range, it is reduced by 8 points for every 1°C decrease. The score calculation also takes into account the impact of the surface temperature change rate, and the temperature state score will be further reduced when the surface temperature changes rapidly.

[0062] S203, determining an optimized input current of the MiniLED module according to the temperature state score and a preset temperature state score-current adjustment correspondence table; The preset temperature state score-current regulation correspondence table includes different current regulation strategies corresponding to different temperature state scores; the optimized input current refers to the best working input current dynamically adjusted according to the current regulation strategy.

[0063] Specifically, the controller queries a preset temperature state score-current adjustment correspondence table. An example of a preset temperature state score-current adjustment correspondence table is given below: Temperature Status Score (ST) Current Regulation Strategy 80≤ST<100 Maintain the original input current 50≤ST<80 Reduce input current to 80% of rated value 30≤ST<50 Reduce input current to 50% of rated value …… …… The controller matches the preset temperature state score-current regulation correspondence table with the temperature state score to obtain the current regulation strategy. The controller calculates the optimized input current based on the current regulation strategy and the original input current.

[0064] S204, when the temperature state score is lower than a preset temperature score threshold, cutting off the power supply of the MiniLED module through the relay, and turning on the traditional taillight module; Among them, the preset temperature rating threshold refers to the critical rating value that triggers safety protection, which is usually set at around 30 points; cutting off the power supply of the Mini LED module means disconnecting the power supply circuit of the Mini LED module through a relay; connecting means closing the power supply circuit of the traditional taillight module.

[0065] Specifically, the controller compares the temperature status score with the preset temperature score threshold (assuming 30 points). When the temperature status score is lower than the preset temperature score threshold for three consecutive sampling cycles (300ms), the protection program is started. First, the controller uses PWM control to smoothly reduce the input current of the Mini LED module to zero within 100ms. Then, the controller sends a relay disconnect signal, waits for 50ms to confirm that the Mini LED module is completely powered off, and then sends a signal to connect the traditional taillight module. The entire switching process strictly follows the "soft shutdown-power off-power on" sequence to ensure that the vehicle lighting system will not be interrupted.

[0066] S205, recording the input current, output light intensity, surface temperature, working start time and working end time of the Mini LED module into a preset Mini LED working log; Among them, input current refers to the actual working current value of the Mini LED module; output light intensity refers to the light intensity emitted by the Mini LED module; work start time refers to the time point each time the Mini LED module is powered on; work end time refers to the time point each time the Mini LED module is powered off; preset Mini LED work log refers to the database used to record the operating status of the Mini LED module.

[0067] Specifically, the controller establishes a structured preset Mini LED work log to record the operating parameters of the Mini LED module in real time: the input current is recorded at intervals of 10ms with an accuracy of 0.1mA; the output light intensity is recorded at intervals of 100ms with an accuracy of 0.1cd / m 2; The surface temperature is recorded at intervals of 100ms with an accuracy of 0.1°C; the working time is recorded accurately to milliseconds.

[0068] S206. Determine a maintenance period of the Mini LED module based on the preset Mini LED work log.

[0069] Specifically, the controller performs a multi-dimensional analysis of the preset Mini LED work log: (1) Calculate the light efficiency attenuation curve (output light intensity / input current change trend), and issue a warning when the light efficiency attenuation exceeds 20%; (2) Analyze the surface temperature distribution characteristics and identify the frequency of abnormal hot spots; (3) Statistical fault events, including frequent switching, temperature exceeding the limit, etc. Based on the analysis results, the controller establishes an adaptive maintenance cycle model: Under normal circumstances, the basic maintenance cycle is 3000 hours, but it will be shortened accordingly in a high temperature and dusty environment. The maintenance cycle refers to the time interval for the inspection and maintenance of the Mini LED module; when the cumulative working time is close to 80% of the theoretical life, the maintenance frequency is increased. Maintenance recommendations include specific items such as cleaning, heat dissipation inspection, and electrical performance testing.

[0070] The controller in the embodiment of the present invention is described below from the perspective of hardware processing. Figure 3 , is a schematic diagram of a physical device structure of a controller in an embodiment of the present application.

[0071] It should be noted that Figure 3 The structure of the controller shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0072] like Figure 3 As shown, the controller includes a central processing unit (CPU) 301, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 302 or the program loaded from the storage part 308 to the random access memory (RAM) 303, such as executing the method described in the above embodiment. In RAM 303, various programs and data required for system operation are also stored. CPU 301, ROM 302 and RAM 303 are connected to each other through bus 304. Input / output (I / O) interface 305 is also connected to bus 304.

[0073] The following components are connected to the I / O interface 305: an input section 306 including an audio input device, a button switch, etc.; an output section 307 including a liquid crystal display (LCD) and an audio output device, an indicator light, etc.; a storage section 308 including a hard disk, etc.; and a communication section 309 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to the I / O interface 305 as needed. A removable medium 311, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 310 as needed so that a computer program read therefrom is installed into the storage section 308 as needed.

[0074] In particular, according to an embodiment of the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 309, and / or installed from a removable medium 311. When the computer program is executed by a central processing unit (CPU) 301, various functions defined in the present invention are performed.

[0075] It should be noted that specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0076] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present invention. Each box in the flowchart or block diagram may represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of a code contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the box may also occur in an order different from that marked in the accompanying drawings.

[0077] Specifically, the controller of this embodiment includes a processor and a memory. The memory stores a computer program. When the computer program is executed by the processor, the Mini LED module application method provided in the above embodiment is implemented.

[0078] As another aspect, the present invention further provides a computer-readable storage medium, which may be included in the controller described in the above embodiment; or may exist independently without being assembled into the controller. The above storage medium carries one or more computer programs, and when the above one or more computer programs are executed by a processor of the controller, the controller implements the Mini LED module application method provided in the above embodiment.

[0079] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0080] As used in the above embodiments, the term "when..." may be interpreted to mean "if..." or "after..." or "in response to determining..." or "in response to detecting...", depending on the context. Similarly, the phrases "upon determining..." or "if (the stated condition or event) is detected" may be interpreted to mean "if determining..." or "in response to determining..." or "upon detecting (the stated condition or event)" or "in response to detecting (the stated condition or event)", depending on the context.

[0081] Those skilled in the art can understand that to implement all or part of the processes in the above-mentioned embodiments, the processes can be completed by computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. When the programs are executed, they can include the processes of the above-mentioned method embodiments. The aforementioned storage media include: ROM or random access memory RAM, magnetic disk or optical disk and other media that can store program codes.

Claims

1. A Mini LED module application method, characterized in that: Applied to a controller, the method comprises: Collect ambient temperature, ambient humidity, ambient light intensity and air particle concentration; Determine a temperature adaptation coefficient according to a degree of deviation between the ambient temperature and an ambient temperature within a preset Mini LED operating ambient temperature range, wherein the higher the degree of deviation of the ambient temperature, the lower the temperature adaptation coefficient; Determining a condensation risk coefficient based on the ambient temperature, the ambient humidity, and the measured temperature of the Mini LED module; Matching the air particle concentration with a preset air particle concentration-pollution risk factor correspondence table to determine the pollution risk factor; Determine a light intensity adaptation coefficient according to the ambient light intensity and the degree of deviation of the ambient light from the preset Mini LED display optimal illumination range, wherein the higher the degree of deviation of the ambient light is, the lower the illumination adaptation coefficient is; Calculate a weighted score of the temperature adaptability coefficient, the condensation risk coefficient, the pollution risk coefficient, and the light intensity adaptability coefficient to obtain a Mini LED environmental adaptability index; When the Mini LED environment adaptability index is greater than a preset threshold, connecting the power supply to the Mini LED module through a relay; When the Mini LED environmental adaptability index is less than or equal to the preset threshold, the power supply is connected to the traditional taillight module through the relay.

2. The method according to claim 1, characterized in that The determining of the temperature adaptation coefficient according to the degree of deviation between the ambient temperature and the preset Mini LED working ambient temperature range, wherein the higher the degree of deviation of the ambient temperature is, the lower the temperature adaptation coefficient is, specifically includes: Comparing the ambient temperature with a maximum ambient temperature and a minimum ambient temperature in the preset Mini LED working ambient temperature range; When the ambient temperature is equal to the maximum ambient temperature or the ambient temperature is equal to the minimum ambient temperature, determining that the temperature adaptation coefficient is 1; When the ambient temperature is higher than the maximum ambient temperature, the ambient temperature, the maximum ambient temperature and the minimum ambient temperature are substituted into a preset first temperature adaptation coefficient calculation formula to obtain the temperature adaptation coefficient; When the ambient temperature is lower than the minimum ambient temperature value, the ambient temperature, the maximum ambient temperature value and the minimum ambient temperature value are substituted into a preset second temperature adaptation coefficient calculation formula to obtain the temperature adaptation coefficient.

3. The method according to claim 1, characterized in that The determining of the condensation risk coefficient based on the ambient temperature, the ambient humidity and the measured temperature of the Mini LED module specifically includes: Inputting the ambient temperature and the ambient humidity into a preset dew point temperature calculation formula to obtain the dew point temperature; determining a temperature difference between the measured temperature and the dew point temperature; The temperature difference is input into a preset condensation risk coefficient calculation formula to obtain the condensation risk coefficient.

4. The method according to claim 3, characterized in that The preset dew point temperature calculation formula is: Wherein, Td represents the dew point temperature, T represents the ambient temperature, H represents the ambient humidity, a represents the preset first coefficient, and b represents the preset second coefficient; The preset dew point temperature calculation formula is: Wherein, R represents the condensation risk coefficient, ΔT represents the temperature difference, and ΔTmax represents the preset maximum temperature difference threshold.

5. The method according to claim 1, characterized in that When the Mini LED environmental adaptability index is greater than a preset threshold, after the step of connecting the power supply to the Mini LED module through a relay, the method further includes: Monitoring the surface temperature of the Mini LED module; Determining a temperature status score of the Mini LED module according to a degree of deviation between the surface temperature and a surface temperature within a preset Mini LED working surface temperature range, wherein the higher the degree of deviation of the surface temperature, the lower the temperature status score; According to the temperature state score and the preset temperature state score-current adjustment correspondence table, the optimized input current of the Mini LED module is determined.

6. The method according to claim 5, characterized in that After the step of determining the temperature status score of the Mini LED module according to the surface temperature and the surface temperature deviation degree of the preset Mini LED working surface temperature range, the method further includes: When the temperature status score is lower than a preset temperature score threshold, the power supply of the Mini LED module is cut off by the relay, and the traditional taillight module is turned on.

7. The method according to claim 5, characterized in that After the step of determining the optimized input current of the Mini LED module according to the temperature state score and the preset temperature state score-current adjustment correspondence table, the method further includes: Recording the input current, output light intensity, surface temperature, working start time and working end time of the Mini LED module in a preset Mini LED working log; Based on the preset Mini LED work log, a maintenance period of the Mini LED module is determined.

8. A controller, characterized in that: The controller comprises: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code comprises computer instructions, and the one or more processors call the computer instructions so that the controller executes the method as described in any one of claims 1-7.

9. A computer-readable storage medium comprising instructions, characterized in that: When the instructions are executed on a controller, the controller is caused to execute the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that When the computer program product runs on a controller, the controller is caused to execute the method according to any one of claims 1 to 7.

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