CN116990994B - Backlight module fault early warning system suitable for display panel - Google Patents
Backlight module fault early warning system suitable for display panel Download PDFInfo
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
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- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
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Abstract
The invention belongs to the field of display fault detection, relates to a data analysis technology, and is used for solving the problem that the existing backlight module fault early warning system cannot predict the fault of a backlight module, in particular to a backlight module fault early warning system suitable for a display panel, which comprises a fault early warning platform, wherein the fault early warning platform is in communication connection with a power supply board monitoring module, a lamp tube monitoring module, a display analysis module and a data storage module; the power supply board monitoring module is used for monitoring and analyzing the running state of the power supply board of the backlight module: shooting an image of a power supply board of the backlight module, marking the shot image as a monitoring image, amplifying the monitoring image into a pixel grid image, and carrying out gray level conversion; the invention can monitor and analyze the running state of the power supply board of the backlight module, obtain the abnormal coefficient by shooting and processing the image of the power supply board, and feed back the aging state of the power supply board by the abnormal coefficient.
Description
Technical Field
The invention belongs to the field of display fault detection, relates to a data analysis technology, and particularly relates to a backlight module fault early warning system suitable for a display panel.
Background
Along with the continuous development of the liquid crystal display technology, the application field of the liquid crystal display, particularly the color liquid crystal display, is also expanding, and is pulled by the market of the liquid crystal display, and the backlight industry presents a prosperous scene; the backlight module is one of key components of the liquid crystal display panel; the function is to provide a light source with sufficient brightness and uniform distribution so that it can display images normally.
The existing backlight module fault early warning system can only perform fault early warning through the display state of the display panel, however, the display graph or character is the result of the backlight module generated by light modulation, the display effect is monitored, the fault of the backlight module can only be detected, the fault of the backlight module cannot be predicted, abnormal pretreatment is performed on the fault of the backlight module to avoid fault occurrence, and the fault rate of the backlight module cannot be effectively controlled.
Aiming at the technical problems, the application provides a solution.
Disclosure of Invention
The invention aims to provide a backlight module failure early warning system suitable for a display panel, which is used for solving the problem that the existing backlight module failure early warning system cannot predict the failure of a backlight module;
the technical problems to be solved by the invention are as follows: how to provide a backlight module failure early warning system which can predict the failure of the backlight module and is suitable for a display panel.
The aim of the invention can be achieved by the following technical scheme: the backlight module fault early warning system suitable for the display panel comprises a fault early warning platform, wherein the fault early warning platform is in communication connection with a power supply board monitoring module, a lamp tube monitoring module, a display analysis module and a data storage module;
the power supply board monitoring module is used for monitoring and analyzing the running state of the power supply board of the backlight module: shooting an image of a power supply board of the backlight module, marking the shot image as a monitoring image, amplifying the monitoring image into a pixel grid image, carrying out gray level conversion, calling a standard pixel grid image of the power supply board through a data storage module, carrying out overlapping comparison on the monitoring image and the standard pixel grid image, and judging whether the running state of the power supply board meets the requirement or not through a comparison result;
the lamp tube monitoring module is used for monitoring and analyzing the lamp tube running state of the backlight module, obtaining the line coefficient XL of the lamp tube, and judging whether the lamp tube running state of the backlight module meets the requirement or not through the line coefficient XL of the lamp tube;
the display analysis module is used for monitoring and analyzing the display state of the display panel: the method comprises the steps of obtaining display pictures of L1 display panels according to a monitoring period, amplifying the display pictures into pixel grid images, marking the pixel grid with a gray level value of 0 or 255 as an abnormal grid, dividing the display panel into a plurality of analysis areas, obtaining the number value of the abnormal grid in the analysis areas and marking the abnormal grid as the abnormal value of the analysis areas, forming an analysis set according to the abnormal values in all the pixel grid images in the monitoring period by the analysis areas, carrying out variance calculation on the analysis set to obtain an abnormal coefficient, obtaining an abnormal threshold value by a data storage module, comparing the abnormal coefficient with the abnormal threshold value, and judging whether the display state of the display panel meets the requirement or not by a comparison result.
As a preferred embodiment of the present invention, the specific process for determining whether the operation state of the power supply panel meets the requirement includes: marking the pixel grid with the gray level difference value not smaller than a preset gray level threshold value as a display abnormal grid; marking the ratio of the number of the abnormal display cells to the number of the pixel cells of the monitoring image as an abnormal display coefficient, acquiring an abnormal display threshold value through a data storage module, and comparing the abnormal display coefficient with the abnormal display threshold value: if the abnormal coefficient is smaller than the abnormal threshold, judging that the running state of the power supply board meets the requirement; if the abnormal coefficient is larger than or equal to the abnormal threshold, the running state of the power supply board is judged to be not satisfied, a power supply board replacement signal is generated and sent to a fault early-warning platform, and the fault early-warning platform sends the power supply board replacement signal to a mobile phone terminal of a manager after receiving the power supply board replacement signal.
As a preferred embodiment of the present invention, the specific process of the lamp tube monitoring module for monitoring and analyzing the operating state of the lamp tube of the backlight module comprises: after the display is started, obtaining brightness enhancement data ZG, flow difference data LC and flow average data LJ, and performing numerical value calculation to obtain a line coefficient XL of a backlight module lamp tube; the circuit threshold XLmax is obtained through the data storage module, the circuit coefficient XL is compared with the circuit threshold XLmax, and whether the running state of the lamp tube meets the requirement or not is judged according to the comparison result.
As a preferred embodiment of the present invention, the process of acquiring the brightness enhancement data ZG, the flow difference data LC, and the flow average data LJ includes: obtaining a current value of a power supply line of a lamp tube, generating a monitoring period when the current value of the power supply line reaches a rated current value, dividing the monitoring period into a plurality of monitoring periods, marking a difference value between a maximum value and a minimum value of the current value of the power supply line of the lamp tube in the monitoring periods as a current difference value of the monitoring periods, and summing and averaging the current difference values of all the monitoring periods to obtain current difference data LC; marking the average value of the maximum value and the minimum value of the current of the power supply line of the lamp tube in the monitoring period as the flow average value of the monitoring period, and carrying out variance calculation on the flow average value of all the monitoring periods to obtain flow average data LJ; the time difference from the display on time to the monitoring period start time is marked as the intensifying data ZG.
As a preferred embodiment of the present invention, the specific process of comparing the line coefficient XL with the line threshold XLmax includes: if the line coefficient XL is smaller than the line threshold XLmax, judging that the running state of the lamp tube of the backlight module meets the requirement; if the line coefficient XL is larger than or equal to the line threshold XLmax, judging that the running state of the lamp tube of the backlight module does not meet the requirement, generating a line aging signal and sending the line aging signal to a fault early warning platform, and sending the line aging signal to a mobile phone terminal of a manager after the fault early warning platform receives the line aging signal.
As a preferred embodiment of the present invention, the specific process of comparing the anomaly coefficient with the anomaly threshold value includes: if the anomaly coefficient is smaller than the anomaly threshold value, marking the corresponding analysis area as an anomaly area; if the anomaly coefficient is greater than or equal to the anomaly threshold value, marking the corresponding analysis area as a normal area; determining whether the number of abnormal areas is zero: if yes, judging that the display state of the display panel meets the requirement; if not, judging that the display state of the display panel does not meet the requirement, generating a display abnormal signal and sending the display abnormal signal to a fault early-warning platform, and sending the display abnormal signal to a mobile phone terminal of a manager after the fault early-warning platform receives the display abnormal signal.
As a preferred embodiment of the invention, the working method of the backlight module failure early warning system suitable for the display panel comprises the following steps:
step one: monitoring and analyzing the running state of a power supply plate of the backlight module: shooting an image of a power supply board of the backlight module, marking the shot image as a monitoring image, carrying out overlapping comparison on the monitoring image and a standard pixel grid image, marking a display difference grid through a comparison result, and judging whether the running state of the power supply board meets the requirement or not through the proportion of the number of the display difference grids in the pixel grid;
step two: monitoring and analyzing the running state of the lamp tube of the backlight module: after the display is started, obtaining the brightness enhancement data ZG of the lamp tube and the flow difference data LC and the flow average data LJ of the power supply circuit; carrying out numerical calculation on the brightness enhancement data ZG, the flow difference data LC and the flow average data LJ to obtain a line coefficient XL, and judging whether the running state of the lamp tube of the backlight module meets the requirement or not through the line coefficient;
step three: monitoring and analyzing the display state of the display panel: and acquiring display pictures of the L1 display panels in the monitoring period, amplifying the display pictures into pixel grid images, dividing the display panels into a plurality of analysis areas, acquiring abnormal coefficients of the analysis areas, marking the analysis areas as normal areas or abnormal areas through the abnormal coefficients, and judging whether the display state meets the requirement or not through the number of the abnormal areas.
The invention has the following beneficial effects:
1. the power supply board operation state of the backlight module can be monitored and analyzed through the power supply board monitoring module, the display difference coefficient is obtained through image shooting and image processing of the power supply board, then the aging state of the power supply board is fed back through the display difference coefficient, and early warning is carried out when the aging state of the power supply board does not meet the normal power supply requirement, so that abnormal display of a display panel due to power supply board faults is avoided;
2. the lamp tube operation state of the backlight module can be monitored and analyzed through the lamp tube monitoring module, the circuit coefficient is obtained through comprehensive analysis and calculation of various current parameters of the lamp tube power supply circuit, and the aging degree of the lamp tube power supply circuit is fed back through the circuit coefficient, so that the phenomenon of abnormal light emission of the lamp tube caused by circuit aging is avoided, and the abnormal display probability of the display panel is reduced;
3. the display state of the display panel can be monitored and analyzed through the display analysis module, abnormal grids in the analysis area are marked in a regional analysis mode, then abnormal display phenomena are marked through the change condition of the number of the abnormal grids in the analysis area in a monitoring period, the operation display effect of the backlight module is monitored, and feedback is timely carried out when display faults occur.
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In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a system block diagram of a first embodiment of the present invention;
fig. 2 is a flowchart of a method according to a second embodiment of the invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in FIG. 1, a backlight module fault early warning system suitable for a display panel comprises a fault early warning platform, wherein the fault early warning platform is in communication connection with a power supply board monitoring module, a lamp tube monitoring module, a display analysis module and a data storage module.
The power supply board monitoring module is used for monitoring and analyzing the running state of the power supply board of the backlight module: the method comprises the steps of performing image shooting on a power supply board of a backlight module, marking the shot image as a monitoring image, amplifying the monitoring image into a pixel grid image, performing gray level conversion, calling a standard pixel grid image of the power supply board through a data storage module, and performing overlapping comparison on the monitoring image and the standard pixel grid image: marking the pixel grid with the gray level difference value not smaller than a preset gray level threshold value as a display abnormal grid; and marking the ratio of the number of the abnormal display cells to the number of the pixel cells of the monitoring image as an abnormal display coefficient.
The abnormal threshold value is obtained through the data storage module, and the abnormal coefficient is compared with the abnormal threshold value: if the abnormal coefficient is smaller than the abnormal threshold, judging that the running state of the power supply board meets the requirement; if the abnormal coefficient is larger than or equal to the abnormal threshold, judging that the running state of the power supply board does not meet the requirement, generating a power supply board replacement signal and sending the power supply board replacement signal to a fault early-warning platform, and sending the power supply board replacement signal to a mobile phone terminal of a manager after the fault early-warning platform receives the power supply board replacement signal; monitoring and analyzing the running state of the power supply board of the backlight module, obtaining a display difference coefficient through image shooting and image processing of the power supply board, and then feeding back the aging state of the power supply board through the display difference coefficient, and carrying out early warning when the aging state of the power supply board does not meet the normal power supply requirement, so that abnormal display of a display panel due to power supply board faults is avoided.
The lamp tube monitoring module is used for monitoring and analyzing the lamp tube running state of the backlight module: after the display is started, obtaining a current value of a lamp tube power supply line, generating a monitoring period when the current value of the power supply line reaches a rated current value, dividing the monitoring period into a plurality of monitoring periods, marking a difference value between a maximum value and a minimum value of the current value of the lamp tube power supply line in the monitoring periods as a current difference value of the monitoring periods, and summing and averaging the current difference values of all the monitoring periods to obtain current difference data LC; marking the average value of the maximum value and the minimum value of the current of the power supply line of the lamp tube in the monitoring period as the flow average value of the monitoring period, and carrying out variance calculation on the flow average value of all the monitoring periods to obtain flow average data LJ; the time difference from the display on time to the monitoring period start time is marked as the intensifying data ZG.
Obtaining a line coefficient XL of a lamp tube of the backlight module through a formula XL=α1LC+α2LJ+α3ZG, wherein the line coefficient is a numerical value reflecting the ageing degree of a power supply line of the lamp tube, and the larger the numerical value of the line coefficient is, the more serious the ageing of the power supply line of the lamp tube is; wherein, alpha 1, alpha 2 and alpha 3 are all proportional coefficients, and alpha 1 > alpha 2 > alpha 3 > 1; the line threshold XLmax is obtained through the data storage module, and the line coefficient XL is compared with the line threshold XLmax: if the line coefficient XL is smaller than the line threshold XLmax, judging that the running state of the lamp tube of the backlight module meets the requirement; if the line coefficient XL is larger than or equal to the line threshold XLmax, judging that the running state of the lamp tube of the backlight module does not meet the requirement, generating a line aging signal and sending the line aging signal to a fault early warning platform, and sending the line aging signal to a mobile phone terminal of a manager after the fault early warning platform receives the line aging signal; the method comprises the steps of monitoring and analyzing the running state of the lamp tube of the backlight module, comprehensively analyzing and calculating various current parameters of a lamp tube power supply circuit to obtain a circuit coefficient, and feeding back the aging degree of the lamp tube power supply circuit through the circuit coefficient, so that the phenomenon of abnormal light emission of the lamp tube caused by circuit aging is avoided, and the abnormal display probability of a display panel is reduced.
The display analysis module is used for monitoring and analyzing the display state of the display panel: acquiring display pictures of L1 display panels in a monitoring period and amplifying the display pictures into pixel grid images, wherein L1 is a numerical constant, and the specific numerical value of L1 is set by a manager; the method comprises the steps of marking a pixel grid with a gray value of 0 or 255 as an abnormal grid, dividing a display panel into a plurality of analysis areas, obtaining the number value of the abnormal grid in the analysis areas and marking the number value as the abnormal value of the analysis areas, forming an analysis set by the abnormal values in all pixel grid images in a monitoring period of the analysis areas, and performing variance calculation on the analysis set to obtain an abnormal coefficient.
Obtaining an abnormal threshold value through the data storage module, and comparing the abnormal coefficient with the abnormal threshold value: if the anomaly coefficient is smaller than the anomaly threshold value, marking the corresponding analysis area as an anomaly area; if the anomaly coefficient is greater than or equal to the anomaly threshold value, marking the corresponding analysis area as a normal area; determining whether the number of abnormal areas is zero: if yes, judging that the display state of the display panel meets the requirement; if not, judging that the display state of the display panel does not meet the requirement, generating a display abnormal signal and sending the display abnormal signal to a fault early-warning platform, and sending the display abnormal signal to a mobile phone terminal of a manager after the fault early-warning platform receives the display abnormal signal; the display state of the display panel is monitored and analyzed, abnormal cells in the analysis area are marked in a regional analysis mode, then the display abnormal phenomenon is marked according to the change condition of the number of the abnormal cells in the analysis area in a monitoring period, the operation display effect of the backlight module is monitored, and feedback is timely carried out when display faults occur.
Example two
As shown in fig. 2, a backlight module failure early warning method suitable for a display panel includes the following steps:
step one: monitoring and analyzing the running state of a power supply plate of the backlight module: shooting an image of a power supply board of the backlight module, marking the shot image as a monitoring image, carrying out overlapping comparison on the monitoring image and a standard pixel grid image, marking a display difference grid through a comparison result, and judging whether the running state of the power supply board meets the requirement or not through the proportion of the number of the display difference grids in the pixel grid;
step two: monitoring and analyzing the running state of the lamp tube of the backlight module: after the display is started, obtaining the brightness enhancement data ZG of the lamp tube and the flow difference data LC and the flow average data LJ of the power supply circuit; carrying out numerical calculation on the brightness enhancement data ZG, the flow difference data LC and the flow average data LJ to obtain a line coefficient XL, and judging whether the running state of the lamp tube of the backlight module meets the requirement or not through the line coefficient;
step three: monitoring and analyzing the display state of the display panel: and acquiring display pictures of the L1 display panels in the monitoring period, amplifying the display pictures into pixel grid images, dividing the display panels into a plurality of analysis areas, acquiring abnormal coefficients of the analysis areas, marking the analysis areas as normal areas or abnormal areas through the abnormal coefficients, and judging whether the display state meets the requirement or not through the number of the abnormal areas.
When the backlight module fault early warning system suitable for the display panel works, image shooting is carried out on a power supply board of the backlight module, the shot image is marked as a monitoring image, the monitoring image is subjected to repeated comparison with a standard pixel grid image, different display grids are marked according to the comparison result, and whether the running state of the power supply board meets the requirement is judged according to the number proportion of the different display grids in the pixel grids; after the display is started, obtaining the brightness enhancement data ZG of the lamp tube and the flow difference data LC and the flow average data LJ of the power supply circuit; carrying out numerical calculation on the brightness enhancement data ZG, the flow difference data LC and the flow average data LJ to obtain a line coefficient XL, and judging whether the running state of the lamp tube of the backlight module meets the requirement or not through the line coefficient; and acquiring display pictures of the L1 display panels in the monitoring period, amplifying the display pictures into pixel grid images, dividing the display panels into a plurality of analysis areas, acquiring abnormal coefficients of the analysis areas, marking the analysis areas as normal areas or abnormal areas through the abnormal coefficients, and judging whether the display state meets the requirement or not through the number of the abnormal areas.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
The formulas are all formulas obtained by collecting a large amount of data for software simulation and selecting a formula close to a true value, and coefficients in the formulas are set by a person skilled in the art according to actual conditions; such as: formula xl=α1lc+α2lj+α3 zg; collecting a plurality of groups of sample data by a person skilled in the art and setting a corresponding line coefficient for each group of sample data; substituting the set line coefficient and the acquired sample data into a formula, forming a ternary one-time equation set by any three formulas, screening the calculated coefficient, and taking an average value to obtain values of alpha 1, alpha 2 and alpha 3 which are 3.74, 2.97 and 2.65 respectively;
the size of the coefficient is a specific numerical value obtained by quantizing each parameter, so that the subsequent comparison is convenient, and the size of the coefficient depends on the number of sample data and the corresponding line coefficient is preliminarily set for each group of sample data by a person skilled in the art; as long as the proportional relation between the parameter and the quantized value is not affected, for example, the line coefficient is in direct proportion to the value of the intensifying data.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (4)
1. The backlight module fault early warning system suitable for the display panel is characterized by comprising a fault early warning platform, wherein the fault early warning platform is in communication connection with a power supply board monitoring module, a lamp tube monitoring module, a display analysis module and a data storage module;
the power supply board monitoring module is used for monitoring and analyzing the running state of the power supply board of the backlight module: shooting an image of a power supply board of the backlight module, marking the shot image as a monitoring image, amplifying the monitoring image into a pixel grid image, carrying out gray level conversion, calling a standard pixel grid image of the power supply board through a data storage module, carrying out overlapping comparison on the monitoring image and the standard pixel grid image, and judging whether the running state of the power supply board meets the requirement or not through a comparison result;
the lamp tube monitoring module is used for monitoring and analyzing the lamp tube running state of the backlight module, obtaining the line coefficient XL of the lamp tube, and judging whether the lamp tube running state of the backlight module meets the requirement or not through the line coefficient XL of the lamp tube;
the display analysis module is used for monitoring and analyzing the display state of the display panel: obtaining display pictures of L1 display panels according to the monitoring period, amplifying the display pictures into pixel grid images, marking the pixel grid with the gray value of 0 or 255 as an abnormal grid, dividing the display panel into a plurality of analysis areas, obtaining the number value of the abnormal grid in the analysis areas and marking the abnormal grid as the abnormal value of the analysis areas, forming an analysis set according to the abnormal values in all the pixel grid images in the monitoring period by the analysis areas, carrying out variance calculation on the analysis set to obtain an abnormal coefficient, obtaining an abnormal threshold value by a data storage module, comparing the abnormal coefficient with the abnormal threshold value, and judging whether the display state of the display panel meets the requirement or not by the comparison result;
the specific process of the lamp tube monitoring module for monitoring and analyzing the lamp tube running state of the backlight module comprises the following steps: after the display is started, obtaining brightness enhancement data ZG, flow difference data LC and flow average data LJ, and performing numerical value calculation to obtain a line coefficient XL of a backlight module lamp tube; obtaining a line threshold XLmax through a data storage module, comparing a line coefficient XL with the line threshold XLmax, and judging whether the running state of the lamp tube meets the requirement or not according to a comparison result;
the process of obtaining the brightness enhancement data ZG, the flow difference data LC and the flow average data LJ includes: obtaining a current value of a power supply line of a lamp tube, generating a monitoring period when the current value of the power supply line reaches a rated current value, dividing the monitoring period into a plurality of monitoring periods, marking a difference value between a maximum value and a minimum value of the current value of the power supply line of the lamp tube in the monitoring periods as a current difference value of the monitoring periods, and summing and averaging the current difference values of all the monitoring periods to obtain current difference data LC; marking the average value of the maximum value and the minimum value of the current of the power supply line of the lamp tube in the monitoring period as the flow average value of the monitoring period, and carrying out variance calculation on the flow average value of all the monitoring periods to obtain flow average data LJ; marking the time difference value from the display starting time to the monitoring period starting time as brightness enhancement data ZG;
the calculation formula of the line coefficient XL of the backlight module lamp tube is as follows: xl=α1lc+α2lj+α3zg, where the line coefficient XL is a value reflecting the ageing degree of the power supply line of the lamp, and the greater the value of the line coefficient XL, the more serious the ageing of the power supply line of the lamp is; wherein, alpha 1, alpha 2 and alpha 3 are all proportional coefficients, and alpha 1 > alpha 2 > alpha 3 > 1;
the specific process of comparing the line coefficient XL with the line threshold XLmax includes: if the line coefficient XL is smaller than the line threshold XLmax, judging that the running state of the lamp tube of the backlight module meets the requirement; if the line coefficient XL is larger than or equal to the line threshold XLmax, judging that the running state of the lamp tube of the backlight module does not meet the requirement, generating a line aging signal and sending the line aging signal to a fault early warning platform, and sending the line aging signal to a mobile phone terminal of a manager after the fault early warning platform receives the line aging signal.
2. The backlight module failure warning system for a display panel according to claim 1, wherein the specific process of determining whether the operation state of the power supply panel meets the requirement comprises: marking the pixel grid with the gray level difference value not smaller than a preset gray level threshold value as a display abnormal grid; marking the ratio of the number of the abnormal display cells to the number of the pixel cells of the monitoring image as an abnormal display coefficient, acquiring an abnormal display threshold value through a data storage module, and comparing the abnormal display coefficient with the abnormal display threshold value: if the abnormal coefficient is smaller than the abnormal threshold, judging that the running state of the power supply board meets the requirement; if the abnormal coefficient is larger than or equal to the abnormal threshold, the running state of the power supply board is judged to be not satisfied, a power supply board replacement signal is generated and sent to a fault early-warning platform, and the fault early-warning platform sends the power supply board replacement signal to a mobile phone terminal of a manager after receiving the power supply board replacement signal.
3. The backlight module failure warning system according to claim 1, wherein the specific process of comparing the anomaly coefficient with the anomaly threshold value comprises: if the anomaly coefficient is smaller than the anomaly threshold value, marking the corresponding analysis area as an anomaly area; if the anomaly coefficient is greater than or equal to the anomaly threshold value, marking the corresponding analysis area as a normal area; determining whether the number of abnormal areas is zero: if yes, judging that the display state of the display panel meets the requirement; if not, judging that the display state of the display panel does not meet the requirement, generating a display abnormal signal and sending the display abnormal signal to a fault early-warning platform, and sending the display abnormal signal to a mobile phone terminal of a manager after the fault early-warning platform receives the display abnormal signal.
4. A backlight module failure warning system for a display panel according to any one of claims 1 to 3, characterized in that the working method of the backlight module failure warning system for a display panel comprises the following steps:
step one: monitoring and analyzing the running state of a power supply plate of the backlight module: shooting an image of a power supply board of the backlight module, marking the shot image as a monitoring image, carrying out overlapping comparison on the monitoring image and a standard pixel grid image, marking a display difference grid through a comparison result, and judging whether the running state of the power supply board meets the requirement or not through the proportion of the number of the display difference grids in the pixel grid;
step two: monitoring and analyzing the running state of the lamp tube of the backlight module: after the display is started, obtaining the brightness enhancement data ZG of the lamp tube and the flow difference data LC and the flow average data LJ of the power supply circuit; carrying out numerical calculation on the brightness enhancement data ZG, the flow difference data LC and the flow average data LJ to obtain a line coefficient XL, and judging whether the running state of the lamp tube of the backlight module meets the requirement or not through the line coefficient;
step three: monitoring and analyzing the display state of the display panel: and acquiring display pictures of the L1 display panels in the monitoring period, amplifying the display pictures into pixel grid images, dividing the display panels into a plurality of analysis areas, acquiring abnormal coefficients of the analysis areas, marking the analysis areas as normal areas or abnormal areas through the abnormal coefficients, and judging whether the display state meets the requirement or not through the number of the abnormal areas.
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| CN114049864A (en) * | 2021-11-30 | 2022-02-15 | 杨春 | Control system of Mini-LED backlight source |
| CN116049863A (en) * | 2023-03-28 | 2023-05-02 | 东莞锐视光电科技有限公司 | System, method and application for generating stripe light by LCD display screen |
| CN116295661A (en) * | 2023-05-22 | 2023-06-23 | 济南西电特种变压器有限公司 | Transformer fault early warning system based on Internet of things |
| CN116540058A (en) * | 2023-07-06 | 2023-08-04 | 宏泰智能科技(东莞)有限公司 | LED car light operation monitoring system based on data analysis |
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| US20080062115A1 (en) * | 2006-09-13 | 2008-03-13 | Houston Brown | System and method for predicting a failure of a backlight for an LCD display |
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| CN114049864A (en) * | 2021-11-30 | 2022-02-15 | 杨春 | Control system of Mini-LED backlight source |
| CN116049863A (en) * | 2023-03-28 | 2023-05-02 | 东莞锐视光电科技有限公司 | System, method and application for generating stripe light by LCD display screen |
| CN116295661A (en) * | 2023-05-22 | 2023-06-23 | 济南西电特种变压器有限公司 | Transformer fault early warning system based on Internet of things |
| CN116540058A (en) * | 2023-07-06 | 2023-08-04 | 宏泰智能科技(东莞)有限公司 | LED car light operation monitoring system based on data analysis |
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