Backlight control system and method for vehicle-mounted LCD (liquid crystal display) module

Abstract

The invention belongs to the field of backlight control, relates to a data analysis technology, and aims to solve the problem that optimization analysis cannot be performed according to monitoring data of a control process in the prior art, in particular to a backlight control system and method for a vehicle-mounted LCD (liquid crystal display) module. The processor is in communication connection with a backlight control module, a control evaluation module, an operation monitoring module and a database; the backlight control module is used for carrying out backlight control analysis on the vehicle-mounted LCD liquid crystal display module, a control period is generated, in the control period, a user selects a backlight control mode by himself or herself to carry out backlight control, and the backlight control mode comprises a light source gradient control mode and a change gradient control mode; when the user does not select the backlight control mode, the control mode is randomly selected, backlight control analysis can be carried out on the vehicle-mounted LCD liquid crystal display module, and backlight control is carried out by adopting double modes, so that different requirements of users with different driving habits are met, and the use experience of the user is improved.

Description

Technical Field

[0001] The invention belongs to the field of backlight control, relates to data analysis technology, and specifically is a vehicle-mounted LCD liquid crystal display module backlight control system and method. Background Art

[0002] Automatic backlight adjustment of vehicle display devices means that the vehicle display devices can automatically sense the light intensity of different environments in which the car is located, thereby automatically adjusting the brightness and contrast of the screen to suit the human eye viewing; that is, the brightness and contrast will be lowered in a darker environment, and increased in a stronger environment.

[0003] The invention patent with announcement number CN116312395A discloses a screen backlight control method based on the power mode of the vehicle cockpit domain controller. The screen backlight control method sends the screen backlight switch status corresponding to the highest priority number to the QNX system on the SOC side through the SPI communication interface. The present invention reduces the hardware cost, solves the shortcomings of complex structural mold opening, long communication link, long delay and disordered power mode management, and the backlight switch scenario is more perfect; however, the control mode of the screen backlight control method is single, which cannot cope with the complex and changeable driving environment, and cannot be optimized and analyzed based on the monitoring data of the control process, resulting in the user experience cannot be improved.

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] The purpose of the present invention is to provide a vehicle-mounted LCD liquid crystal display module backlight control system and method, which is used to solve the problem that the prior art cannot perform optimization analysis based on the monitoring data of the control process;

[0006] The technical problem to be solved by the present invention is: how to provide a vehicle-mounted LCD liquid crystal display module backlight control system and method that can perform optimization analysis based on monitoring data of the control process.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A vehicle-mounted LCD liquid crystal display module backlight control system, comprising a processor, wherein the processor is communicatively connected with a backlight control module, a control evaluation module, an operation monitoring module and a database;

[0009] The backlight control module is used to perform backlight control analysis on the vehicle-mounted LCD liquid crystal display module: generate a control cycle, within which the user selects a backlight control mode to perform backlight control, the backlight control mode includes a light source gradient control mode and a variable gradient control mode, and randomly selects a control mode when the user does not select a backlight control mode;

[0010] The control evaluation module is used to evaluate and analyze the control mode of the vehicle-mounted LCD liquid crystal display module: when the execution number of the control cycle reaches L1, the control cycle using the light source gradient control mode for backlight control is marked as the light source cycle, the control cycle using the variable gradient control mode for backlight control is marked as the variable cycle, the total number of times the user manually adjusts the screen brightness in the light source cycle is marked as the light source intervention value, the total number of times the user manually adjusts the screen brightness in the variable cycle is marked as the variable intervention value, the sum of the light source intervention value and the variable intervention value is marked as the intervention performance value, the intervention performance value is sent to the operation monitoring module through the processor, the light source weight value and the variable weight value are obtained, and the random selection weight of the control mode is set by the light source weight value and the variable weight value;

[0011] The operation monitoring module is used to monitor and analyze the control process of the backlight module.

[0012] Furthermore, the specific process of backlight control using the light source gradient control mode includes: dividing the control cycle into several light source control time periods, obtaining the brightness value of the ambient light through the ambient light brightness acquisition board at the end of the light source control time period, calling the backlight brightness value corresponding to the ambient light brightness value in the light source control comparison table, and adjusting the brightness of the light bar in the backlight module through the backlight brightness value.

[0013] Furthermore, the specific process of backlight control using the variable gradient control mode includes: dividing the control cycle into a number of variable control time periods, obtaining the brightness value of the ambient light and the brightness value of the light bar in the backlight module at the beginning of the variable control time period and marking them as the ambient initial value and the light bar initial value respectively; obtaining the brightness value of the ambient light at the end of the variable control time period and marking it as the ambient analysis value, marking the absolute value of the difference between the ambient analysis value and the ambient initial value as the ambient change value, obtaining the ambient change threshold through the database, and comparing the ambient change value with the ambient change threshold: if the ambient change value is less than the ambient change threshold, it is determined that the degree of ambient light change meets the requirements; if the ambient change value is greater than or equal to the ambient change threshold, it is determined that the degree of ambient light change does not meet the requirements, obtaining the backlight brightness value and adjusting the brightness of the light bar in the backlight module through the backlight brightness value.

[0014] Furthermore, the process of obtaining the backlight brightness value includes: calling the backlight adjustment value corresponding to the environmental change value in the change control comparison table, and comparing the environmental analysis value with the environmental initial value: if the environmental initial value is less than the environmental analysis value, then the sum of the light bar initial value and the backlight adjustment value is marked as the backlight brightness value; if the environmental initial value is greater than the environmental analysis value, then the difference between the light bar initial value and the backlight adjustment value is marked as the backlight brightness value.

[0015] Furthermore, the process of obtaining the light source weight value and the change weight value includes: marking the ratio of the change intervention value to the intervention performance value as the light source weight value, and marking the ratio of the light source intervention value to the intervention performance value as the change weight value; when randomly selecting the backlight control mode in the subsequent control cycle, the random selection weight of the light source gradient control mode and the selection weight of the change gradient control mode are set as the light source weight value and the change weight value respectively.

[0016] Furthermore, the specific process of operating the monitoring module to monitor and analyze the control process of the backlight module includes: retrieving the intervention performance threshold through the database, and comparing the intervention performance value with the intervention performance threshold: if a number of pre-performance values ​​are less than the intervention performance threshold, it is determined that the control process of the backlight module of L1 control cycles meets the requirements; if a number of pre-performance values ​​are greater than or equal to the intervention performance threshold, it is determined that the control process of the backlight module of L1 control cycles does not meet the requirements, and the optimization decision of the control process is marked.

[0017] Furthermore, the specific process of marking the optimization decision of the control process includes: obtaining the intervention data GY and the influence data YX of L1 control cycles and performing numerical calculations to obtain the fluctuation coefficient BD, obtaining the fluctuation threshold BDmax through the database, and comparing the fluctuation coefficient BD with the fluctuation threshold BDmax: if the fluctuation coefficient BD is less than the fluctuation threshold BDmax, the optimization decision of the control process is marked as gradient optimization, a gradient optimization signal is generated, and the gradient optimization signal is sent to the mobile phone terminal of the manager through the processor; if the fluctuation coefficient BD is greater than or equal to the fluctuation threshold BDmax, the optimization decision of the control process is marked as duration optimization, a duration optimization signal is generated, and the duration optimization signal is sent to the mobile phone terminal of the manager through the processor.

[0018] Furthermore, the process of obtaining the intervention data GY and the influence data YX includes: marking the light source control period and the change control period in which the user manually adjusts the screen brightness as intervention periods, and marking the L2 periods before each intervention period as influence periods; marking the difference between the maximum and minimum values ​​of the brightness value of the ambient light in the intervention period as the intervention analysis value of the intervention period, and summing and averaging the intervention analysis values ​​of all intervention periods to obtain the intervention data GY; marking the difference between the maximum and minimum values ​​of the brightness value of the ambient light in the influence period as the influence analysis value of the influence period, and summing and averaging the influence analysis values ​​of all influence periods to obtain the influence data YX.

[0019] A vehicle-mounted LCD liquid crystal display module backlight control method comprises the following steps:

[0020] Step 1: Analyze the backlight control of the vehicle-mounted LCD display module: Generate a control cycle, and within the control cycle, the user selects the backlight control mode to control the backlight;

[0021] Step 2: Evaluate and analyze the control mode of the vehicle-mounted LCD liquid crystal display module: When the number of executions of the control cycle reaches L1, the selection weights of the light source gradient control mode and the change gradient control mode are set respectively by the light source weight value and the change weight value;

[0022] Step 3: Monitor and analyze the control process of the backlight module, and mark the optimization decision of the control process when the control process of the backlight module in L1 control cycles does not meet the requirements.

[0023] The present invention has the following beneficial effects:

[0024] 1. The backlight control module can be used to analyze the backlight control of the vehicle-mounted LCD display module, and dual-mode backlight control can be used to meet the different needs of users with different driving habits and improve the user experience;

[0025] 2. The control evaluation module can evaluate and analyze the control mode of the vehicle-mounted LCD display module. After the number of control cycle executions reaches a certain value, the number of times the user manually adjusts the screen in all control cycles is counted, and then the randomly selected weights are set according to the generated light source weight value and the change weight value, so that the backlight control mode is more in line with the user's driving habits;

[0026] 3. By running the monitoring module, the control process of the backlight module can be monitored and analyzed, and feedback can be given on the matching degree between the user's driving habits and the control process according to the intervention performance value. In this way, when the user frequently and actively adjusts the screen brightness, targeted optimization decisions can be generated for the control process of the control cycle, thereby further improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 is a system block diagram of Embodiment 1 of the present invention;

[0029] Figure 2 This is a flow chart of the method of Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1: Figure 1 As shown, a vehicle-mounted LCD liquid crystal display module backlight control system includes a processor, and the processor is communicatively connected to a backlight control module, a control evaluation module, an operation monitoring module and a database.

[0032] The backlight control module is used to perform backlight control analysis on the vehicle-mounted LCD liquid crystal display module: generate a control cycle, within which the user selects a backlight control mode for backlight control. The backlight control modes include a light source gradient control mode and a variable gradient control mode. When the user does not select a backlight control mode, a control mode is randomly selected; perform backlight control analysis on the vehicle-mounted LCD liquid crystal display module, and use dual modes for backlight control to meet the different needs of users with different driving habits and enhance the user experience.

[0033] The specific process of backlight control using the light source gradient control mode includes: dividing the control cycle into a number of light source control periods, obtaining the brightness value of the ambient light through the ambient light brightness acquisition board at the end of the light source control period, calling the backlight brightness value corresponding to the ambient light brightness value in the light source control comparison table, and adjusting the brightness of the light bar in the backlight module according to the backlight brightness value;

[0034] The specific process of backlight control using the variable gradient control mode includes: dividing the control cycle into several variable control periods, obtaining the brightness value of the ambient light and the brightness value of the light bar in the backlight module at the beginning of the variable control period and marking them as the ambient initial value and the light bar initial value respectively; obtaining the brightness value of the ambient light at the end of the variable control period and marking it as the ambient analysis value, marking the absolute value of the difference between the ambient analysis value and the ambient initial value as the ambient change value, obtaining the ambient change threshold through the database, and comparing the ambient change value with the ambient change threshold: if the ambient change value is less than the ambient If the environment change value is greater than or equal to the environment change threshold, it is determined that the degree of ambient light change meets the requirements; if the environment change value is greater than or equal to the environment change threshold, it is determined that the degree of ambient light change does not meet the requirements, and the backlight adjustment value corresponding to the environment change value in the change control comparison table is retrieved, and the environment analysis value is compared with the environment initial value: if the environment initial value is less than the environment analysis value, the sum of the light bar initial value and the backlight adjustment value is marked as the backlight brightness value; if the environment initial value is greater than the environment analysis value, the difference between the light bar initial value and the backlight adjustment value is marked as the backlight brightness value; the light bar brightness in the backlight module is adjusted according to the backlight brightness value.

[0035] The control evaluation module is used to evaluate and analyze the control mode of the vehicle-mounted LCD liquid crystal display module: when the number of executions of the control cycle reaches L1, the control cycle that uses the light source gradient control mode for backlight control is marked as the light source cycle, the control cycle that uses the variable gradient control mode for backlight control is marked as the variable cycle, the total number of times the user manually adjusts the screen brightness in the light source cycle is marked as the light source intervention value, the total number of times the user manually adjusts the screen brightness in the variable cycle is marked as the variable intervention value, the sum of the light source intervention value and the variable intervention value is marked as the intervention performance value, the intervention performance value is sent to the operation monitoring module through the processor, and the variable intervention value is compared with the intervention table. The ratio of the present values ​​is marked as the light source weight value, and the ratio of the light source intervention value to the intervention performance value is marked as the change weight value; when randomly selecting the backlight control mode in the subsequent control cycle, the random selection weight of the light source gradient control mode and the selection weight of the change gradient control mode are set to the light source weight value and the change weight value respectively; the control mode of the vehicle-mounted LCD liquid crystal display module is evaluated and analyzed, and after the number of control cycle executions reaches a certain value, the number of times the user manually adjusts the screen in all control cycles is counted, and then the randomly selected weight is set according to the generated light source weight value and the change weight value, so that the backlight control mode is more in line with the user's driving habits.

[0036] The operation monitoring module is used to monitor and analyze the control process of the backlight module: the intervention performance threshold is retrieved through the database, and the intervention performance value is compared with the intervention performance threshold: if a number of pre-performance values ​​are less than the intervention performance threshold, it is determined that the backlight module control process of L1 control cycles meets the requirements; if a number of pre-performance values ​​are greater than or equal to the intervention performance threshold, it is determined that the backlight module control process of L1 control cycles does not meet the requirements, L1 is a numerical constant, and the specific value of L1 is set by the management personnel; the light source control period and the change control period when the user manually adjusts the screen brightness are marked as intervention periods, and each The L2 periods before the intervention period are marked as impact periods, L2 is a numerical constant, and the specific value of L2 is set by the management personnel; the difference between the maximum and minimum values ​​of the brightness of the ambient light in the intervention period is marked as the intervention analysis value of the intervention period, and the intervention analysis values ​​of all intervention periods are summed and averaged to obtain the intervention data GY; the difference between the maximum and minimum values ​​of the brightness of the ambient light in the impact period is marked as the impact analysis value of the impact period, and the impact analysis values ​​of all impact periods are summed and averaged to obtain the impact data YX; the fluctuation is obtained by the formula BD=k1*GY+k2*YX Coefficient BD, where k1 and k2 are both proportional coefficients, and k1>k2>1; obtain the fluctuation threshold BDmax through the database, and compare the fluctuation coefficient BD with the fluctuation threshold BDmax: if the fluctuation coefficient BD is less than the fluctuation threshold BDmax, the optimization decision of the control process is marked as gradient optimization, a gradient optimization signal is generated, and the gradient optimization signal is sent to the mobile terminal of the manager through the processor. After receiving the gradient optimization signal, the manager optimizes the light source control comparison table and the change control comparison table, and improves the timeliness of the backlight control through the refined segmentation of the control gradient; if the fluctuation coefficient BD is greater than or equal to the fluctuation threshold BDmax, the optimization decision of the control process is marked as duration optimization, a duration optimization signal is generated, and the duration optimization signal is sent to the mobile terminal of the manager through the processor. After receiving the growth optimization signal, the manager optimizes the duration of the light source control period and the change control period, and improves the timeliness of the backlight control by shortening the duration; feedback is given to the matching degree of the user's driving habits and the control process according to the intervention performance value, so that when the user actively adjusts the screen brightness more frequently, a targeted optimization decision is generated for the control process of the control cycle, further improving the user experience.

[0037] Embodiment 2: Figure 2 As shown, a vehicle-mounted LCD liquid crystal display module backlight control method includes the following steps:

[0038] Step 1: Analyze the backlight control of the vehicle-mounted LCD display module: Generate a control cycle, and within the control cycle, the user selects the backlight control mode to control the backlight;

[0039] Step 2: Evaluate and analyze the control mode of the vehicle-mounted LCD liquid crystal display module: When the number of executions of the control cycle reaches L1, the selection weights of the light source gradient control mode and the change gradient control mode are set respectively by the light source weight value and the change weight value;

[0040] Step 3: Monitor and analyze the control process of the backlight module, and mark the optimization decision of the control process when the control process of the backlight module in L1 control cycles does not meet the requirements.

[0041] A vehicle-mounted LCD liquid crystal display module backlight control system and method, when working, generates a control cycle, within the control cycle, the user selects the backlight control mode to control the backlight; when the execution number of the control cycle reaches L1, the selection weights of the light source gradient control mode and the change gradient control mode are set respectively by the light source weight value and the change weight value; the control process of the backlight module is monitored and analyzed, and when the backlight module control process of L1 control cycles does not meet the requirements, the optimization decision of the control process is marked.

[0042] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0043] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula close to the real value. The coefficients in the formula are set by technicians in this field according to the actual situation; for example: formula BD = k1*GY+k2*YX; technicians in this field collect multiple groups of sample data and set corresponding fluctuation coefficients for each group of sample data; substitute the set fluctuation coefficients and the collected sample data into the formula, any two formulas constitute a set of two-variable linear equations, screen the calculated coefficients and take the average, and obtain the values ​​of k and k2 as 3.52 and 2.17 respectively;

[0044] The size of the coefficient is to quantify each parameter to obtain a specific value for subsequent comparison. The size of the coefficient depends on the amount of sample data and the preliminary setting of the corresponding fluctuation coefficient for each set of sample data by technical personnel in this field; as long as it does not affect the proportional relationship between the parameter and the quantified value, such as the fluctuation coefficient is proportional to the value of the intervention data.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A vehicle-mounted LCD liquid crystal display module backlight control system, characterized in that: It includes a processor, and the processor is communicatively connected with a backlight control module, a control evaluation module, an operation monitoring module and a database; The backlight control module is used to perform backlight control analysis on the vehicle-mounted LCD liquid crystal display module: generate a control cycle, within which the user selects a backlight control mode to perform backlight control, the backlight control mode includes a light source gradient control mode and a variable gradient control mode, and randomly selects a control mode when the user does not select a backlight control mode; The control evaluation module is used to evaluate and analyze the control mode of the vehicle-mounted LCD liquid crystal display module: when the execution number of the control cycle reaches L1, the control cycle using the light source gradient control mode for backlight control is marked as the light source cycle, the control cycle using the variable gradient control mode for backlight control is marked as the variable cycle, the total number of times the user manually adjusts the screen brightness in the light source cycle is marked as the light source intervention value, the total number of times the user manually adjusts the screen brightness in the variable cycle is marked as the variable intervention value, the sum of the light source intervention value and the variable intervention value is marked as the intervention performance value, the intervention performance value is sent to the operation monitoring module through the processor, the light source weight value and the variable weight value are obtained, and the random selection weight of the control mode is set by the light source weight value and the variable weight value; The operation monitoring module is used to monitor and analyze the control process of the backlight module.

2. The vehicle-mounted LCD liquid crystal display module backlight control system according to claim 1, characterized in that: The specific process of backlight control using the light source gradient control mode includes: dividing the control cycle into several light source control time periods, obtaining the brightness value of the ambient light through the ambient light brightness acquisition board at the end of the light source control time period, retrieving the backlight brightness value corresponding to the ambient light brightness value in the light source control comparison table, and adjusting the brightness of the light bar in the backlight module through the backlight brightness value.

3. The vehicle-mounted LCD liquid crystal display module backlight control system according to claim 2, characterized in that: The specific process of backlight control using the variable gradient control mode includes: dividing the control cycle into a number of variable control time periods, obtaining the brightness value of the ambient light and the brightness value of the light bar in the backlight module at the beginning of the variable control time period and marking them as the ambient initial value and the light bar initial value respectively; obtaining the brightness value of the ambient light at the end of the variable control time period and marking it as the ambient analysis value, marking the absolute value of the difference between the ambient analysis value and the ambient initial value as the ambient change value, obtaining the ambient change threshold through the database, and comparing the ambient change value with the ambient change threshold: if the ambient change value is less than the ambient change threshold, it is determined that the degree of ambient light change meets the requirements; if the ambient change value is greater than or equal to the ambient change threshold, it is determined that the degree of ambient light change does not meet the requirements, obtaining the backlight brightness value and adjusting the brightness of the light bar in the backlight module through the backlight brightness value.

4. The vehicle-mounted LCD liquid crystal display module backlight control system according to claim 3, characterized in that: The process of obtaining the backlight brightness value includes: calling the backlight adjustment value corresponding to the environmental change value in the change control comparison table, and comparing the environmental analysis value with the environmental initial value: if the environmental initial value is less than the environmental analysis value, then the sum of the light bar initial value and the backlight adjustment value is marked as the backlight brightness value; if the environmental initial value is greater than the environmental analysis value, then the difference between the light bar initial value and the backlight adjustment value is marked as the backlight brightness value.

5. The vehicle-mounted LCD liquid crystal display module backlight control system according to claim 4, characterized in that: The process of obtaining the light source weight value and the change weight value includes: marking the ratio of the change intervention value to the intervention performance value as the light source weight value, and marking the ratio of the light source intervention value to the intervention performance value as the change weight value; when randomly selecting the backlight control mode in the subsequent control cycle, the random selection weight of the light source gradient control mode and the selection weight of the change gradient control mode are set as the light source weight value and the change weight value respectively.

6. The vehicle-mounted LCD liquid crystal display module backlight control system according to claim 5, characterized in that: The specific process of operating the monitoring module to monitor and analyze the control process of the backlight module includes: retrieving the intervention performance threshold through the database, and comparing the intervention performance value with the intervention performance threshold: if a number of pre-performance values ​​are less than the intervention performance threshold, it is determined that the control process of the backlight module for L1 control cycles meets the requirements; if a number of pre-performance values ​​are greater than or equal to the intervention performance threshold, it is determined that the control process of the backlight module for L1 control cycles does not meet the requirements, and the optimization decision of the control process is marked.

7. The vehicle-mounted LCD liquid crystal display module backlight control system according to claim 6, characterized in that: The specific process of marking the optimization decision of the control process includes: obtaining the intervention data GY and the influence data YX of L1 control cycles and performing numerical calculations to obtain the fluctuation coefficient BD, obtaining the fluctuation threshold BDmax through the database, and comparing the fluctuation coefficient BD with the fluctuation threshold BDmax: if the fluctuation coefficient BD is less than the fluctuation threshold BDmax, the optimization decision of the control process is marked as gradient optimization, a gradient optimization signal is generated, and the gradient optimization signal is sent to the mobile phone terminal of the manager through the processor; if the fluctuation coefficient BD is greater than or equal to the fluctuation threshold BDmax, the optimization decision of the control process is marked as duration optimization, a duration optimization signal is generated, and the duration optimization signal is sent to the mobile phone terminal of the manager through the processor.

8. The vehicle-mounted LCD liquid crystal display module backlight control system according to claim 7, characterized in that: The process of obtaining the intervention data GY and the impact data YX includes: marking the light source control period and the change control period during which the user manually adjusts the screen brightness as the intervention period, and marking the L2 periods before each intervention period as the impact period; marking the difference between the maximum and minimum values ​​of the brightness value of the ambient light in the intervention period as the intervention analysis value of the intervention period, and summing and averaging the intervention analysis values ​​of all intervention periods to obtain the intervention data GY; marking the difference between the maximum and minimum values ​​of the brightness value of the ambient light in the impact period as the impact analysis value of the impact period, and summing and averaging the impact analysis values ​​of all impact periods to obtain the impact data YX.

9. A vehicle-mounted LCD liquid crystal display module backlight control method, characterized in that: The following steps are involved: Step 1: Analyze the backlight control of the vehicle-mounted LCD display module: Generate a control cycle, and within the control cycle, the user selects the backlight control mode to control the backlight; Step 2: Evaluate and analyze the control mode of the vehicle-mounted LCD liquid crystal display module: When the number of executions of the control cycle reaches L1, the selection weights of the light source gradient control mode and the change gradient control mode are set respectively by the light source weight value and the change weight value; Step 3: Monitor and analyze the control process of the backlight module, and mark the optimization decision of the control process when the control process of the backlight module in L1 control cycles does not meet the requirements.

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