A digital tube fault detection method and system based on partition display

Abstract

The present application relates to a digital tube fault detection method and system based on partition display, and to the technical field of digital tube maintenance, which includes first using previous detection data to establish a data model, establishing the data model through learning, obtaining a standard current set and a correlation coefficient, and obtaining the number of expected damaged digital tubes as a reference for the partition strategy of the screen to be tested. Next, the display driver is controlled to complete the partition display of the digital tube, and the detection current after the partition is compared with the standard value of the driving current, and the partitions that do not meet the requirements are further partitioned. The detection current after further partitioning is compared with the standard value of the partition current. If it does not meet the requirements, the digital tubes in the partition are detected in turn, so as to detect the faulty digital tubes, and finally send a fault signal carrying the digital tube position number. The present application has the effect of improving the efficiency of digital tube fault detection and reducing the technical requirements for display drivers.

Description

Technical Field

[0001] The present application relates to the field of digital tube maintenance, and in particular to a digital tube fault detection method based on partition display. Background Art

[0002] At present, digital tubes are widely used in various scenarios due to their diversity and practicality. Among them, most display operations are completed by a large number of digital tubes. The digital tube applications in different scenarios are in different environments. There are LED display screens at mid-altitude and small digital screens at touchable height.

[0003] For digital tube display screens in special environments, there are certain safety hazards in their maintenance. If traditional machinery and methods are used for maintenance, the safety hazards will increase. It needs to be repaired at high altitude or in an unsafe state. In addition, in the production line, for the factory inspection of digital tubes produced in large quantities, single digital tubes or multiple digital tubes are more often tested in sequence.

[0004] With respect to the above-mentioned related technologies, the applicant believes that there are disadvantages such as low fault detection efficiency, high requirements on display driver hardware, and high cost. Summary of the invention

[0005] The purpose of this application is to provide a digital tube fault detection method and system based on partition display, which can improve the efficiency of digital tube fault detection and reduce the technical requirements for display drivers.

[0006] In the first aspect, the present application provides a digital tube fault detection method based on partition display, which adopts the following technical solution:

[0007] Based on the preset digital tube partition model data, a standard current set is obtained;

[0008] Based on the comparison between the actual current of the screen to be tested and the standard current set, the number of digital tubes expected to be damaged on the screen to be tested is obtained;

[0009] The number of partitions is obtained based on the expected number of damaged digital tubes, and based on the number of partitions, the display driver partition operation is performed on the screen to be tested, and the current value of each display driver partition is obtained respectively;

[0010] Based on the comparison of the obtained display drive partition current value and the standard current set, the expected number of damaged digital tubes in the drive partition is obtained;

[0011] Based on the number of damaged digital tubes in the expected drive partition, the digital tubes in the corresponding display drive partition are controlled to be further partitioned for operation, and the current value of each digital tube partition is obtained;

[0012] Obtain the digital tube partitions whose digital tube partition current values ​​are not within the error range of the partition current standard value, perform operations on the digital tubes in the digital tube partitions in sequence, and obtain the preset numbers of the damaged digital tubes;

[0013] Based on the preset number of the damaged digital tube, a fault signal containing the position information of this digital tube is sent.

[0014] By adopting the above technical solution, multiple digital tubes are controlled by each display driver. The screen to be tested is first partitioned according to the number of digital tubes expected to be damaged, and the digital tube area with problems is located by comparing with the standard current value. The problematic digital tube area is secondary partitioned according to the number of damaged digital tubes in the expected drive partition, the positioning range is narrowed, and after comparing with the current value of the standard area, each digital tube in the problematic digital tube area is detected in turn to determine the faulty digital tube, which improves the positioning efficiency, allows maintenance personnel to quickly locate and find the faulty digital tube, improves the fault detection efficiency, and can reduce the hardware requirements for the display driver.

[0015] Preferably, based on the preset digital tube partition model data, the step of obtaining the standard current set includes:

[0016] Based on the preset digital tube partition model data, the length and width coefficients of the digital tube partition are obtained;

[0017] Based on the length-width coefficient, the standard value of the total output current, the standard value of the drive partition current, the standard value of the digital tube partition current and the standard value of the output current of a single digital tube are calculated.

[0018] By adopting the above technical solution, a set of current standard values ​​can be obtained, which plays a key role in screening out damaged digital tubes in the subsequent screen to be tested, and can be compared with the actual current to draw a more accurate conclusion on whether the digital tube is damaged.

[0019] Preferably, the step of obtaining the expected amount of damaged digital tubes based on the comparison of the actual current of the screen to be tested and the standard current set comprises:

[0020] Obtain the actual total output current, and calculate the difference between the actual total output current and the standard value of the total output current;

[0021] Based on the difference between the actual total output current and the standard value of the total output current and the correlation coefficient between the number of damaged digital tubes and the actual current difference, the expected number of damaged digital tubes of the screen to be tested is obtained.

[0022] By adopting the above technical solution, the number of damaged digital tubes is judged by the difference between the total output current and the standard value of the total output current, which is more data-referenced and can obtain the expected number of damaged digital tubes in the screen to be tested, which can be used as a reference for the number of subsequent partitions, and assist in finding damaged digital tubes more quickly through partitioning.

[0023] Preferably, the step of performing display drive partitioning operation on the screen to be tested based on the number of partitions and respectively obtaining the current value of each display drive partition includes:

[0024] Based on the number of partitions, establish a corresponding number of display driver partition sets;

[0025] Compile the preset numbers of the display drivers of the screen to be tested into the display driver partition set, and obtain all display driver partition sets;

[0026] The display driver is controlled to make the digital tube partition corresponding to the display driver partition set operate according to the preset delay time, and the current values ​​of all display driver partitions are obtained.

[0027] By adopting the above technical solution, the display driver partition numbers marked with damaged digital tubes are compiled into a set, which can improve the convenience of subsequent processing of the display driver partitions with damaged digital tubes, control the preset delay time to perform operations, prevent interference between previous and subsequent operating currents, and improve the referenceability of the detected current value.

[0028] Preferably, the step of obtaining the number of digital tubes that are expected to be damaged in the driving partition based on comparing the obtained partition current value with the standard current set includes:

[0029] Based on the display driving partition current value and the driving partition current standard value, a difference between the display driving partition current value and the driving partition current standard value is obtained by comparison;

[0030] Acquire a display drive partition whose display drive partition current value is not within the error range of the drive partition current standard value, and mark the preset number of the display drive;

[0031] Based on the difference between the current value of the display drive partition and the standard value of the drive partition current and the correlation coefficient between the number of damaged digital tubes and the actual current difference, the expected number of damaged digital tubes in the drive partition is obtained.

[0032] By adopting the above technical solution, the drive partition with damaged digital tubes is marked, and the expected number of damaged digital tubes in the drive partition is obtained, which can assist in further partitioning the subsequent drive partition and improve the efficiency of fault detection.

[0033] Preferably, the steps of obtaining the expected number of damaged digital tubes in the drive partition, controlling the digital tubes in the corresponding display drive partition to further partition and operate, and obtaining the current value of each digital tube partition include:

[0034] Based on the number of damaged digital tubes in the expected driver partition, the number of further partitions of the marked display driver is obtained;

[0035] Based on the number of further partitions of the marked display driver, a corresponding number of digital tube partition sets are established;

[0036] The preset numbers of the digital tubes controlled by the marked display driver are respectively compiled into the digital tube partition sets, and all the digital tube partition sets in the marked display driver are obtained;

[0037] The digital tubes controlled by each digital tube partition set are driven to operate according to the preset delay time, and the current values ​​of all digital tube partitions are obtained.

[0038] By adopting the above technical solution, a digital tube partition set is established, which can be used to program the digital tubes controlled by the marked display driver, so that these digital tubes will not be missed in subsequent inspections, the problem data will be more concentrated, the inspection scope will be narrowed, and the inspection efficiency will be improved.

[0039] Preferably, the step of obtaining the digital tube partition whose digital tube partition current value is not within the error range of the partition current standard value, sequentially operating the digital tubes in the digital tube partition, and obtaining the preset number of the damaged digital tube includes:

[0040] Based on the current values ​​of all digital tube partitions, mark the digital tube sequence numbers whose current values ​​are not within the preset error range of the single digital tube output current standard value;

[0041] Obtain the digital tube partitions whose digital tube partition current values ​​are not within the error range of the digital tube partition current standard value, and mark the digital tube partition set with a preset number;

[0042] Based on the digital tube partition set with marked numbers, the preset numbers of the digital tubes in the set are obtained, the digital tubes are displayed in sequence according to the preset numbers, and the preset numbers of the damaged digital tubes are obtained.

[0043] By adopting the above technical solution, the fault signal sent includes the rectangular position number of the digital tube and the pin fault information of the digital tube, which can improve the accuracy of digital tube positioning and accurately provide the digital tube number, thereby improving the efficiency of maintenance. At the same time, the pin fault information also improves the precision of the fault information and improves the maintenance efficiency.

[0044] Preferably, the digital tubes display the preset numbers in sequence, and the step of obtaining the preset numbers of the damaged digital tubes includes:

[0045] Based on the preset number of the digital tube, the digital tube performs display operation in sequence to obtain the current value of the digital tube;

[0046] Based on the current value of the digital tube and the standard value of the output current of a single digital tube, the digital tubes whose current values ​​are not within the error range of the standard value of the output current of the single digital tube are compared and obtained, and the preset numbers of the digital tubes are obtained.

[0047] By adopting the above technical solution, the problematic digital tubes are found out one by one from the digital tube partitions, and the preset numbers of the digital tubes that are not within the error range of the standard value of the output current of a single digital tube are obtained by comparison, so that the information of the damaged digital tube can be accurately obtained.

[0048] Preferably, after the step of sending a fault signal containing the position information of the damaged digital tube based on the preset number of the damaged digital tube, the method further comprises:

[0049] Calculate the number of damaged digital tubes, compare it with the expected number of damaged digital tubes of the screen to be tested, and adjust the correlation coefficient between the number of damaged digital tubes and the actual current difference.

[0050] By adopting the above technical solution, feedback adjustment can be made based on the number of damaged digital tubes actually detected, and the correlation coefficient between the number of damaged digital tubes and the actual current difference can be corrected. The accuracy of data for subsequent detection of digital tube faults can be improved through self-adjustment and correction.

[0051] In the second aspect, the present application provides a digital tube fault detection system based on partition display, which adopts the following technical solution:

[0052] A model data acquisition module, wherein the model acquisition module is used to obtain a standard current set based on preset digital tube partition model data;

[0053] An expected total damage quantity module, the expected damage quantity module is used to obtain the expected number of damaged digital tubes of the screen to be tested based on the comparison of the actual current and the standard current set of the screen to be tested;

[0054] A display drive partition module, the drive partition module is used to obtain the number of partitions based on the expected number of damaged digital tubes, perform display drive partition operations on the screen to be tested based on the number of partitions, and obtain the current value of each display drive partition respectively;

[0055] An expected partition damage quantity module, the expected partition damage quantity module is used to obtain the expected number of damaged digital tubes in the drive partition based on the comparison of the obtained display drive partition current value and the standard current set;

[0056] A digital tube partitioning module, which is used to control the digital tubes of the corresponding display drive partition to further partition and operate based on the number of digital tubes damaged in the expected drive partition, and obtain the current value of each digital tube partition;

[0057] A digital tube single inspection module, the digital tube single inspection module is used to obtain digital tube partitions whose digital tube partition current values ​​are not within the error range of the partition current standard value, perform operations on the digital tubes in the digital tube partitions in sequence, and obtain the preset number of the damaged digital tube;

[0058] The sending and repair module is used to send a fault signal containing the position information of the damaged digital tube based on the preset number of the damaged digital tube.

[0059] By adopting the above technical solution, the model data acquisition module can play a data auxiliary function and set up standard values ​​for subsequent current detection comparison. The display driver partition module, the digital tube partition module and the digital tube single inspection module can narrow down the location of the faulty digital tube in the digital tube area, improve the positioning efficiency, and can obtain the digital tube position, allowing maintenance personnel to quickly locate and find the faulty digital tube, improve the fault detection efficiency, and reduce the hardware requirements for the display driver.

[0060] In summary, the present application includes at least one of the following beneficial technical effects:

[0061] 1. This solution divides the digital tube area into sections according to the display driver and the digital tubes controlled by the display driver, and compares each section with the model standard current value to locate the faulty digital tube, thereby improving the positioning efficiency and obtaining the position of the digital tube, allowing maintenance personnel to quickly locate the faulty digital tube, improving the fault detection efficiency and reducing the hardware requirements for the display driver;

[0062] 2. This solution can play a good auxiliary role in locating the position of subsequent faulty digital tubes by numbering each display driver and digital tube, and can also ensure the integrity of the detection and reduce the possibility of test omissions;

[0063] 3. This solution uses a preset delay time to delay the display when driving each digital tube area to display, and allows the display driver to drive the digital tubes in order according to the number, and ensures that the driven digital tubes are displayed in sequence. The preset delay time can make the detection result more accurate and eliminate the influence of current crossover in a short time.

[0064] 4. This solution can make feedback adjustments and correct the correlation coefficient between the number of damaged digital tubes and the actual current difference based on the number of damaged digital tubes actually detected. Through self-adjustment and correction, the accuracy of data for subsequent detection of digital tube failures is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 This is a workflow diagram of Embodiment 1 of a digital tube fault detection method based on partition display of the present application;

[0066] Figure 2 This is a specific workflow diagram of Example 1 of a digital tube fault detection method based on partition display of the present application;

[0067] Figure 3 This is a logical structure diagram of Embodiment 2 of a digital tube fault detection system based on partition display of the present application;

[0068] In the figure, 1. Obtain model data module; 2. Expected total damage quantity module; 3. Display driver partition module; 4. Expected partition damage quantity module; 5. Digital tube partition module; 6. Digital tube single inspection module; 7. Send signal module. DETAILED DESCRIPTION

[0069] In a high-altitude environment, if traditional electric meters and related methods are used for maintenance, it is necessary to carry out maintenance for a long time at high altitude or in an unsafe state, which increases the safety risks during maintenance. In addition, in the production line, for the factory inspection of digital tubes produced in large quantities, single digital tubes or multiple digital tubes are more often used for sequential inspection, which has high requirements for display driver hardware, high time cost and low efficiency. At this time, a digital tube fault detection method based on partition display is needed to improve the efficiency of maintenance and locate the faulty digital tube.

[0070] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0071] Embodiment 1 of the present application provides a digital tube fault detection method based on partition display:

[0072] Reference Figure 1 ,

[0073] S101. Based on the preset digital tube partition model data, a standard current set is obtained;

[0074] Based on the previous digital tube fault detection data, including digital tube parameters, digital tube quantity, digital tube fault current and other data, the data correlation coefficient is calculated, and then the various data of this fault test are substituted to obtain the reference current standard set data required for the subsequent test.

[0075] S102. Obtain the number of digital tubes expected to be damaged by the screen to be tested based on the comparison of the actual current and the standard current set of the screen to be tested;

[0076] After the test begins, a preset current is first passed through the digital tube, and then the total test current flowing out is obtained. By comparing the total test current with the standard value of the total output current in the standard current set obtained according to the digital tube partition data model, if the total test current value is not within the preset 5% error range of the standard value of the total output current, the difference between the actual current of the screen to be tested and the standard value of the total output current is substituted into the correlation coefficient between the actual current difference and the number of damaged digital tubes in the model data to calculate the expected number of damaged digital tubes on the screen to be tested.

[0077] S103. Based on the expected number of damaged digital tubes, the number of partitions is obtained, and based on the number of partitions, the display driver partition operation is performed on the screen to be tested, and the current value of each display driver partition is obtained respectively;

[0078] Based on the calculated expected number of damaged digital tubes in the screen to be tested, the partition quantity relationship coefficient obtained by substituting it into the digital tube partition data model is used to obtain the preliminary partition number of the screen to be tested. The display driver in the screen to be tested is partitioned according to the preliminary partition number, and the display operations of the driver partitions are performed in turn to obtain the current values ​​of all display driver partitions.

[0079] S104. Based on the comparison of the obtained display drive partition current value and the standard current set, the expected number of damaged digital tubes in the drive partition is obtained;

[0080] By comparing the detection current of each digital tube partition with the partition current standard value obtained according to the digital tube partition data model, by comparing the detection current of each driving partition with the driving partition current standard value obtained according to the digital tube partition data model, if the detection current of the driving partition is not within the 5% error range of the driving partition current standard value, then based on the difference between the actual current of the display driving partition and the total output current standard value combined with the correlation coefficient between the actual current difference and the number of damaged digital tubes in the model data, the expected number of damaged digital tubes in the driving partition is calculated.

[0081] S105. Based on the expected number of damaged digital tubes in the drive partition, the digital tubes in the corresponding display drive partition are controlled to be further partitioned for operation, and the current value of each digital tube partition is obtained;

[0082] The number of further partitions is determined based on the expected number of damaged digital tubes in the drive partition. The digital tubes controlled by the display driver with problems are further partitioned, and preset currents are passed in turn to drive each digital tube partition for display. After each display, the detection current of each digital tube partition is obtained.

[0083] S106. Obtain the digital tube partitions whose current values ​​of the digital tube partitions are not within the error range of the standard value of the partition current, perform operations on the digital tubes in the digital tube partitions in sequence, and obtain the preset number of the damaged digital tube;

[0084] By comparing the detection current of each digital tube with the standard value of the single digital tube output current obtained according to the digital tube partition data model, if the detection current of the digital tube is not within the error range of 5% of the standard value of the single digital tube output current, the preset number of the damaged digital tube is obtained.

[0085] S107. Based on the preset number of the damaged digital tube, a fault signal containing the position information of the digital tube is sent;

[0086] Based on the preset number of the damaged digital tube and the upper limit of the number of digital tubes in each row of the screen to be tested, a coordinate system of the screen to be tested is established, the coordinate position of each digital tube is numbered, and a fault signal with the coordinate position of the digital tube is sent to the external terminal device to prompt repair and display the number information of the faulty digital tube.

[0087] Reference Figure 2 , the step of S101 includes the following sub-steps:

[0088] S1011. Based on the preset digital tube partition model data, obtain the length and width coefficients of the digital tube partition;

[0089] Through the previous detection data of digital tube faults, including digital tube parameters, digital tube quantity, digital tube fault current and other data, a digital tube data model is established, and then the correlation coefficient between the length and width specifications of the digital tube partition and the current standard value is obtained, which is the length and width coefficient of the digital tube partition.

[0090] S1012. Based on the length-width coefficient, calculate and obtain the total output current standard value, the drive partition current standard value, the digital tube partition current standard value and the single digital tube output current standard value;

[0091] Based on the length and width coefficients of the digital tube partitions, substitute the length and width specifications of the screen to be tested, the length and width specifications of the digital tubes controlled by the display driver, and the specifications of a single digital tube to calculate the standard value of the total output current, the standard value of the drive partition current, the standard value of the digital tube partition current, and the standard value of the output current of a single digital tube.

[0092] Reference Figure 2 , the step of S102 includes the following sub-steps:

[0093] S1021. Obtain the actual total output current, and calculate the difference between the actual total output current and the standard value of the total output current;

[0094] After starting the detection, firstly, a preset current is passed into the digital tube, and then the total detection current flowing out is obtained. The total detection current is compared with the standard value of the total output current obtained according to the digital tube partition data model, and the difference between the standard value of the total output current and the actual total output current is calculated.

[0095] S1022. Based on the difference between the actual total output current and the standard value of the total output current and the correlation coefficient between the number of damaged digital tubes and the actual current difference, obtain the number of digital tubes expected to be damaged on the screen to be tested;

[0096] Based on the difference between the calculated total output current standard value and the actual total output current, the correlation coefficient between the number of damaged digital tubes and the actual current difference is obtained according to the digital tube data model. The correlation coefficient means that every time a digital tube is damaged, the actual current value will decrease by a fixed amount. The expected number of damaged digital tubes in the screen to be tested is calculated by the reduction in the actual current value.

[0097] Reference Figure 2 , the step of S103 includes the following steps:

[0098] S1031. Based on the number of partitions, establish a corresponding number of display driver partition sets;

[0099] The number of partitions is obtained based on the expected number of damaged digital tubes, and then the same number of display driver partition sets are established according to the number of partitions. The display driver partition set is mainly used to compile the preset numbers of display drivers of the same partition into the set. For example, when the number of partitions is 3, three display driver partition sets A, B, and C are established;

[0100] S1032. The preset numbers of the display drivers of the screen to be tested are compiled into the display driver partition set, and all display driver partition sets are obtained;

[0101] The preset numbers of display drivers in the same partition are compiled into the same set. For example, the preset numbers of 6 display drivers are respectively classified into three display driver partition sets A, B, and C, that is, the display drivers with preset numbers 1 and 2 are in set A, the display drivers with preset numbers 3 and 4 are in set B, and the display drivers with preset numbers 5 and 6 are in set C. After all the display driver numbers are included, the numbers of all display driver partition sets are obtained;

[0102] S1033. Control the display driver to make the digital tube partition corresponding to the display driver partition set operate according to the preset delay time, and obtain the current values ​​of all display driver partitions.

[0103] The display driver partition sets are controlled in sequence to perform display respectively. After each display is completed, the current value of the display driver partition is recorded, and a delay of 0.5s is performed according to a preset delay time before entering the next display driver display operation.

[0104] Reference Figure 2 , the step of S104 further includes the following steps:

[0105] S1041. Based on the display driving partition current value and the driving partition current standard value, compare and obtain the difference between the display driving partition current value and the driving partition current standard value;

[0106] A preset current is passed through the digital tubes of the display drive partition, and then the outflowing display drive partition current value is obtained. The display drive partition current difference is obtained by comparing the display drive partition current value with the drive partition current standard value obtained according to the digital tube partition data model, and calculating the drive partition current standard value minus the display drive partition current value.

[0107] S1042. Obtaining a display driver partition whose display driver partition current value is not within the error range of the drive partition current standard value, and marking the preset number of the display driver;

[0108] The current value of the display drive partition is obtained, and compared with the standard value of the drive partition current obtained by the digital tube partition data model. If the current value of the display drive partition is not within the 5% error range of the standard value of the drive partition current, the preset number of the display drive partition is marked with a field.

[0109] S1043. Based on the difference between the current value of the display driving partition and the standard value of the current of the driving partition and the correlation coefficient between the number of damaged digital tubes and the actual current difference, obtain the expected number of damaged digital tubes in the driving partition.

[0110] Obtaining the display driver partition current difference and the correlation coefficient between the number of damaged digital tubes obtained in the digital tube partition data model and the actual current difference means calculating the difference and the correlation coefficient to obtain the expected number of damaged digital tubes in the driver partition.

[0111] Reference Figure 2 The step of S105 further includes the following steps:

[0112] S1051. Based on the expected number of damaged digital tubes in the driver partition, the number of further partitions of the marked display driver is obtained;

[0113] The expected number of damaged digital tubes in the driving partition is obtained, and then the number of partitions is obtained by substituting the correlation coefficient between the optimal partition quantity and the number of damaged digital tubes in the digital tube partition data model into the expected number of damaged digital tubes in the driving partition.

[0114] S1052. Based on the number of further partitions of the marked display driver, a corresponding number of digital tube partition sets are established;

[0115] According to the number of partitions, a set of digital tube partitions with preset numbers a, b, c, d, etc. is established. For example, if the number of partitions is 3, three sets of digital tube partitions a, b, and c are established.

[0116] S1053. The preset numbers of the digital tubes controlled by the marked display driver are respectively compiled into the digital tube partition sets, and all the digital tube partition sets in the marked display driver are obtained.

[0117] In the marked display driver partition, the preset number of each digital tube is compiled into a different digital tube partition set, that is, after the display driver partition is marked, its internal preset number is divided into each digital tube partition set respectively, and finally the partition set of the preset number of each digital tube is obtained. That is, when the A display driver partition is marked, the digital tubes with preset numbers 1, 2, 3, 4, etc. in A are respectively compiled into the digital tube partition sets a, b, c, and d, that is, there are digital tubes with preset numbers 1 and 2 in set a, there are digital tubes with preset numbers 3 and 4 in set b, and there are digital tubes with preset numbers 5 and 6 in set c.

[0118] S1054. Drive the digital tubes controlled by each digital tube partition set to operate according to the preset delay time, and obtain the current values ​​of all digital tube partitions.

[0119] By obtaining the preset number partition set of each digital tube, each digital tube partition set is driven to perform the digital tube display operation, and after each operation, the next digital tube partition display operation is entered according to the preset delay time of 0.5s, and the current value of each digital tube partition is obtained after each operation.

[0120] Reference Figure 2 The step of S106 further includes the following steps:

[0121] S1061. Obtain the digital tube partitions whose current values ​​of the digital tube partitions are not within the error range of the standard current values ​​of the digital tube partitions, and mark the digital tube partition set with a preset number;

[0122] The current value of each digital tube partition is obtained and compared with the digital tube partition current standard value. When the digital tube partition current value is not within the error range of 5% of the digital tube partition current standard value, the preset number of the digital tube partition is marked with a field.

[0123] S1062. Based on the digital tube partition set with marked numbers, the preset numbers of the digital tubes in the set are obtained, the digital tubes are displayed in sequence according to the preset numbers, and the preset numbers of the damaged digital tubes are obtained.

[0124] Determine the digital tube partition marked by the added field, and obtain the preset numbers of all digital tubes in the digital tube partition, sort them according to the size of the preset numbers to display them in sequence, and then obtain the preset numbers of the digital tubes with abnormal current values.

[0125] Reference Figure 2 The step of S1062 further includes the following steps:

[0126] S1063. Based on the preset number of the digital tube, the digital tube performs display operations in sequence to obtain the current value of the digital tube;

[0127] Determine the digital tube partition marked by the added field, obtain the preset numbers of all digital tubes in the digital tube partition, sort them according to the size of the preset numbers to display them in sequence, and then obtain the current value of each digital tube.

[0128] S1064. Based on the current value of the digital tube and the standard value of the output current of a single digital tube, compare and obtain the digital tubes whose current values ​​are not within the error range of the standard value of the output current of a single digital tube, and obtain the preset number of the digital tube.

[0129] By comparing the digital tube current value with the standard value of the single digital tube output current, when the digital tube current value is not within the 5% error range of the standard value of the single digital tube output current, the preset number of the digital tube is obtained and the preset number of the digital tube is included in the damaged digital tube number set.

[0130] Reference Figure 2 , after step S107, the method further includes:

[0131] S108. Calculate the number of damaged digital tubes, compare it with the expected number of damaged digital tubes of the screen to be tested, and adjust the correlation coefficient between the number of damaged digital tubes and the actual current difference.

[0132] Obtain a damaged digital tube number set, count and calculate the digital tube numbers in the number set to obtain the actual number of damaged digital tubes, compare it with the expected number of damaged digital tubes, substitute it into the calculation formula of the difference between the number of damaged digital tubes and the actual current, and adjust the correlation coefficient between the number of damaged digital tubes and the actual current difference.

[0133] The implementation principle of Example 1 of the present application is as follows: first, a data model is established using previous detection data, and the data model is established through learning to obtain a standard current set and a correlation coefficient. The number of expected damaged digital tubes is obtained as a reference for the partitioning strategy of the screen to be tested, and then the standard values ​​of each current after hierarchical partitioning are obtained according to the display driver. Next, the display driver is controlled to complete the partition display of the digital tube, and the detection current after the partition is compared with the standard value of the driving current. The partitions that do not meet the requirements are further partitioned. The detection current after further partitioning is compared with the standard value of the partition current. If it does not meet the requirements, the digital tubes in the partition are tested in turn, so as to detect the faulty digital tubes, and finally a fault signal carrying the position number of the digital tube is sent.

[0134] Embodiment 2 of the present application provides a digital tube fault detection system based on partition display:

[0135] Reference Figure 3 , obtaining model data module 1, is used to establish a data model through learning through previous digital tube fault detection data, including digital tube parameters, digital tube quantity, digital tube fault current and other data, and to compare or substitute various data of this fault test to obtain the reference data required for the subsequent test: total output current standard value, drive partition current standard value, partition current standard value and single digital tube output current standard value;

[0136] Reference Figure 3 , the expected total damage quantity module 2 is used to first pass a preset current into the digital tube after the detection starts, and then obtain the total detection current flowing out. By comparing the total detection current with the standard value of the total output current obtained according to the digital tube partition data model, and calculating the difference between the standard value of the total output current and the actual total output current. Based on the difference between the calculated standard value of the total output current and the actual total output current, according to the correlation coefficient between the number of digital tube damages and the actual current difference obtained in the digital tube data model, the difference is combined with the correlation coefficient to calculate the expected number of damaged digital tubes of the screen to be tested;

[0137] Reference Figure 3 , the display driver partition module 3 is used to obtain the number of partitions based on the expected number of damaged digital tubes, and then according to the number of partitions, for example, if the number of partitions is 3, three display driver partition sets A, B, and C are established. The display driver partition set is mainly used to compile the preset numbers of the display drivers of the same partition into the set. The preset numbers of the display drivers of the same partition are compiled into the same set, for example, numbers 1 and 2 are included in the A display driver partition set, and numbers 3 and 4 are included in the B display driver partition set... After all display driver numbers are included, the numbers of all display driver partition sets are obtained. By controlling the display driver partition sets in sequence to display respectively, after each display is completed, the current value of the display driver partition is recorded, and it will be delayed by 0.5s according to the preset delay time before entering the next display driver display operation.

[0138] Reference Figure 3, the digital tube partition module 5 is used to obtain the number of damaged digital tubes in the expected drive partition, and then substitute the correlation coefficient between the optimal partition amount and the number of damaged digital tubes in the digital tube partition data model into the number of damaged digital tubes in the expected drive partition to calculate the number of partitions. According to the number of partitions, a digital tube partition set with preset numbers a, b, c, d, etc. is established. In the marked display drive partition, the preset number of each digital tube is compiled into different digital tube partition sets, that is, after the display drive partition A is marked, the digital tubes with internal preset numbers 1, 2, 3, 4, etc. are respectively divided into each digital tube partition set, and finally the partition set with the preset number of each digital tube is obtained. By obtaining the partition set with the preset number of each digital tube, each digital tube partition set is driven to perform the digital tube display operation, and after each operation, the display operation of the next digital tube partition is entered according to the preset delay time of 0.5s, and the current value of each digital tube partition is obtained after each operation.

[0139] Reference Figure 3 , the digital tube single inspection module 6 is used to read the partition current standard value of the acquisition model data module 1 and read the detection current of each digital tube partition of the digital tube partition module 5, by comparing the detection current of each digital tube partition with the partition current standard value obtained according to the digital tube partition data model, if the detection current of each digital tube partition is not within the 5% error range of the partition current standard value, then the digital tubes in this partition are displayed in sequence according to the number, and after each display, the number of the digital tube and the detection current of the digital tube are obtained;

[0140] Reference Figure 3 , a signal sending module 7 is used to establish a coordinate system of the screen to be tested based on the preset number of the damaged digital tube and the upper limit of the number of digital tubes in each row of the screen to be tested, number the coordinate position of each digital tube, and send a fault signal with the coordinate position of the digital tube to the external terminal device to prompt repair and display the number information of the faulty digital tube.

[0141] The implementation principle of Example 2 of the present application is as follows: first, a data model is established using previous detection data, and the data model is established through learning to obtain a standard current set and a correlation coefficient. The number of expected damaged digital tubes is obtained as a reference for the partitioning strategy of the screen to be tested, and then the standard values ​​of each current after hierarchical partitioning are obtained according to the display driver. Next, the display driver is controlled to complete the partition display of the digital tube, and the detection current after the partition is compared with the standard value of the driving current. The partitions that do not meet the requirements are further partitioned. The detection current after further partitioning is compared with the standard value of the partition current. If it does not meet the requirements, the digital tubes in the partition are tested in turn, so as to detect the faulty digital tubes, and finally a fault signal carrying the position number of the digital tube is sent.

[0142] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A digital tube fault detection method based on partition display, characterized in that: The following steps are involved: Based on the preset digital tube partition model data, a standard current set is obtained; Based on the comparison between the actual current of the screen to be tested and the standard current set, the number of digital tubes expected to be damaged on the screen to be tested is obtained; The number of partitions is obtained based on the expected number of damaged digital tubes, and based on the number of partitions, the display driver partition operation is performed on the screen to be tested, and the current value of each display driver partition is obtained respectively; Based on the comparison of the obtained display drive partition current value and the standard current set, the expected number of damaged digital tubes in the drive partition is obtained; based on the obtained expected number of damaged digital tubes in the drive partition, the digital tubes in the corresponding display drive partition are controlled to be further partitioned for operation, and the current value of each digital tube partition is obtained; Obtain the digital tube partitions whose digital tube partition current values ​​are not within the error range of the partition current standard value, perform operations on the digital tubes in the digital tube partitions in sequence, and obtain the preset numbers of the damaged digital tubes; Based on the preset number of the damaged digital tube, a fault signal containing the position information of the digital tube is sent; The step of obtaining a standard current set based on the preset digital tube partition model data includes: Based on the preset digital tube partition model data, the length and width coefficients of the digital tube partition are obtained; Based on the length and width coefficients, the standard value of the total output current, the standard value of the drive partition current, the standard value of the digital tube partition current and the standard value of the output current of a single digital tube are calculated; The step of obtaining the expected amount of damaged digital tubes based on the comparison of the actual current and the standard current set of the screen to be tested comprises: obtaining the actual total output current, and calculating the difference between the actual total output current and the standard value of the total output current; Based on the difference between the actual total output current and the standard value of the total output current and the correlation coefficient between the number of damaged digital tubes and the actual current difference, the expected number of damaged digital tubes of the screen to be tested is obtained; The steps of performing display drive partitioning operation on the screen to be tested based on the number of partitions and respectively obtaining the current value of each display drive partition include: Based on the number of partitions, establish a corresponding number of display driver partition sets; The preset numbers of the display drivers of the screen to be tested are compiled into the display driver partition set, and all display driver partition sets are obtained; the display driver is controlled to make the digital tube partition corresponding to the display driver partition set operate according to the preset delay time, and the current values ​​of all display driver partitions are obtained.

2. A digital tube fault detection method based on partition display according to claim 1, characterized in that: The step of obtaining the expected number of damaged digital tubes in the driving partition based on the comparison of the obtained partition current value and the standard current set includes: obtaining the difference between the display driving partition current value and the drive partition current standard value based on the display driving partition current value and the drive partition current standard value; Acquire a display drive partition whose display drive partition current value is not within the error range of the drive partition current standard value, and mark the preset number of the display drive; Based on the difference between the current value of the display drive partition and the standard value of the drive partition current and the correlation coefficient between the number of damaged digital tubes and the actual current difference, the expected number of damaged digital tubes in the drive partition is obtained.

3. A digital tube fault detection method based on partition display according to claim 2, characterized in that: The steps of obtaining the expected number of damaged digital tubes in the drive partition, controlling the digital tubes in the corresponding display drive partition to further partition and operate, and obtaining the current value of each digital tube partition include: Based on the number of damaged digital tubes in the expected driver partition, the number of further partitions of the marked display driver is obtained; Based on the number of further partitions of the marked display driver, a corresponding number of digital tube partition sets are established; The preset numbers of the digital tubes controlled by the marked display driver are respectively compiled into the digital tube partition sets, and all the digital tube partition sets in the marked display driver are obtained; The digital tubes controlled by each digital tube partition set are driven to operate according to the preset delay time, and the current values ​​of all digital tube partitions are obtained.

4. A method for detecting digital tube faults based on partition display according to claim 1, characterized in that: The steps of obtaining the digital tube partition whose digital tube partition current value is not within the error range of the partition current standard value, sequentially operating the digital tubes in the digital tube partition, and obtaining the preset number of the damaged digital tube include: Obtain the digital tube partitions whose digital tube partition current values ​​are not within the error range of the digital tube partition current standard value, and mark the digital tube partition set with a preset number; Based on the digital tube partition set with marked numbers, the preset numbers of the digital tubes in the set are obtained, the digital tubes are displayed in sequence according to the preset numbers, and the preset numbers of the damaged digital tubes are obtained.

5. A digital tube fault detection method based on partition display according to claim 4, characterized in that: The digital tubes display the preset numbers in sequence, and the steps of obtaining the preset numbers of the damaged digital tubes include: Based on the preset number of the digital tube, the digital tube performs display operation in sequence to obtain the current value of the digital tube; Based on the current value of the digital tube and the standard value of the output current of a single digital tube, the digital tubes whose current values ​​are not within the error range of the standard value of the output current of the single digital tube are compared and obtained, and the preset numbers of the digital tubes are obtained.

6. A digital tube fault detection method based on partition display according to claim 1, characterized in that: After the step of sending a fault signal containing the position information of the digital tube based on the preset number of the damaged digital tube, the method includes: Calculate the number of damaged digital tubes, compare it with the expected number of damaged digital tubes of the screen to be tested, and adjust the correlation coefficient between the number of damaged digital tubes and the actual current difference.

7. A digital tube fault detection system based on partition display, characterized in that: include: A model data acquisition module (1), the model data acquisition module (1) is used to obtain a standard current set based on preset digital tube partition model data, obtain the length and width coefficients of the digital tube partitions based on the preset digital tube partition model data, and calculate and obtain a total output current standard value, a drive partition current standard value, a digital tube partition current standard value, and a single digital tube output current standard value based on the length and width coefficients; An expected total damage quantity module (2), the expected total damage quantity module (2) is used to obtain the actual current of the screen to be tested and the standard current set based on comparison, obtain the actual total output current, calculate and obtain the difference between the actual total output current and the standard value of the total output current, and obtain the expected number of damaged digital tubes of the screen to be tested based on the difference between the actual total output current and the standard value of the total output current and the correlation coefficient between the number of damaged digital tubes and the actual current difference; A display driver partition module (3), the display driver partition module (3) being used to obtain the number of partitions based on the expected number of damaged digital tubes, establish a corresponding number of display driver partition sets based on the number of partitions, compile the preset numbers of the display drivers of the screen to be tested into the display driver partition sets, obtain all display driver partition sets, control the display driver to make the digital tube partitions corresponding to the display driver partition sets operate according to the preset delay time, and obtain the current values ​​of all display driver partitions; An expected partition damage quantity module (4), the expected partition damage quantity module (4) is used to obtain the expected number of damaged digital tubes in the drive partition based on the comparison of the acquired display drive partition current value and the standard current set; A digital tube partitioning module (5), the digital tube partitioning module (5) is used to control the digital tubes of the corresponding display drive partition to further partition and operate based on obtaining the expected number of damaged digital tubes in the drive partition, and to obtain the current value of each digital tube partition; A digital tube single inspection module (6), the digital tube single inspection module (6) is used to obtain digital tube partitions whose digital tube partition current values ​​are not within the error range of the partition current standard value, perform operations on the digital tubes in the digital tube partitions in sequence, and obtain preset numbers of damaged digital tubes; A signal sending module (7) is used to send a fault signal containing position information of the damaged digital tube based on a preset number of the damaged digital tube.

Images