A method and device for adjusting correction coefficient of thermal effect of LED display screen

Abstract

The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The application discloses a correction coefficient adjusting method and device for thermal effect of an LED display screen, and relates to the technical field of LED display screens. The

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of LED display screen correction, in particular to a correction coefficient adjustment method and device for thermal effect of an LED display screen. BACKGROUND

[0002] The LED display screen will have local temperature problems inconsistent due to heat generated by lamp beads, circuits, driving chips, memory devices and power supplies, etc., resulting in partial red and blue problems, which seriously affect the display effect of the screen, referred to as thermal effect of the LED display screen.

[0003] In the prior art, there are two ways to solve the thermal effect of the LED display screen: one way is to place a thermometer in front of the screen body to measure the surface temperature of the screen body, so as to adjust the correction coefficient of the LED display screen at different temperature values. However, this way will affect the usability of the screen body, especially for some special use scenarios such as spherical screens, monitoring centers, studios, film shooting screens, cinema screens, and television terminal screens. Another way is to install a temperature detector on the back of the screen to measure the temperature of the back of the screen, but this way has the problem of poor measurement accuracy and effect due to the difference between the temperature of the back and the front of the screen body, that is, there is a certain time and space difference between the temperature change of the front and the back of the screen body.

[0004] Therefore, there is an urgent need in the art to find a new technical solution to solve the above problems. SUMMARY

[0005] To overcome the problems in the related art, the present disclosure provides a correction coefficient adjustment method and device for thermal effect of an LED display screen.

[0006] According to a first aspect of the present disclosure, a correction coefficient adjustment method for thermal effect of an LED display screen is provided, which comprises:

[0007] pre-establishing a temperature mapping relationship table between the front temperature and the back temperature of the LED display screen, and a coefficient mapping relationship table Y3 between the front temperature and the correction coefficient;

[0008] real-time monitoring the temperature of the LED display screen, and collecting a real-time back temperature value T0 of the LED display screen;

[0009] obtaining a corresponding real-time front temperature value according to the real-time back temperature value T0 of the LED display screen and the temperature mapping relationship table;

[0010] obtaining a target correction coefficient of the LED display screen according to the real-time front temperature value and the coefficient mapping relationship table Y3, so as to adjust the correction coefficient of the LED display screen.

[0011] Optionally, the temperature mapping relationship table comprises a temperature rising mapping relationship table Y1, and a process of establishing the temperature rising mapping relationship table Y1 comprises:

[0012] Let the front temperature of the LED display screen rise from room temperature;

[0013] Collect the back temperature of the LED display screen every time the first preset temperature value t is increased until the front temperature of the LED display screen cannot increase the first preset temperature value t within a preset time period;

[0014] Determine the highest temperature value T max of the front temperature;

[0015] Obtain a temperature rising mapping relationship table Y1 between the front temperature and the back temperature of the LED display screen.

[0016] Optionally, the temperature mapping relationship table comprises a temperature falling mapping relationship table Y2, and a process of establishing the temperature falling mapping relationship table Y2 comprises:

[0017] Let the front temperature of the LED display screen fall from the highest temperature value T max ;

[0018] Collect the back temperature of the LED display screen every time the first preset temperature value t is decreased until the front temperature of the LED display screen cannot decrease the first preset temperature value t within a preset time period;

[0019] Determine the lowest temperature value T min of the front temperature;

[0020] Obtain a temperature falling mapping relationship table Y2 between the front temperature and the back temperature of the LED display screen.

[0021] Optionally, the process of establishing the coefficient mapping relationship table Y3 comprises:

[0022] Let the front temperature of the LED display screen rise from 0℃;

[0023]

[0024] Obtain the corresponding correction coefficient of the LED display screen every time the second preset temperature value t is increased until the front temperature of the LED display screen reaches the highest temperature value T max ;

[0025] Obtain a coefficient mapping relationship table Y3 between the front temperature and the correction coefficient of the LED display screen.

[0026] ​Optionally, the corresponding front real-time temperature value is obtained according to the real-time back temperature value T0 of the LED display screen and the temperature mapping relationship table, and the method comprises the following steps of:

[0027] When the real-time back temperature value T0 is monitored to increase, the first front real-time temperature value T1 corresponding to the real-time back temperature value T0 is obtained according to the temperature rising mapping relationship table Y1.

[0028] When the real-time back temperature value T0 is monitored to decrease, the second front real-time temperature value T2 corresponding to the real-time back temperature value T0 is obtained according to the temperature falling mapping relationship table Y2.

[0029] Optionally, the target correction coefficient of the LED display screen is obtained according to the front real-time temperature value and the coefficient mapping relationship table Y3, and the method comprises the following steps of:

[0030] It is determined whether the target temperature value exists in the coefficient mapping relationship table Y3, and the temperature difference between the target temperature value and the front real-time temperature value is less than the first preset temperature value t.

[0031] If the target temperature value exists, the correction coefficient corresponding to the target temperature value is determined as the target correction coefficient of the LED display screen according to the coefficient mapping relationship table Y3.

[0032] If the target temperature value does not exist, the minimum value and the first correction coefficient corresponding to the minimum value are selected from all temperature values greater than the front real-time temperature value in the coefficient mapping relationship table Y3, and the maximum value and the second correction coefficient corresponding to the maximum value are selected from all temperature values less than the front real-time temperature value in the coefficient mapping relationship table Y3.

[0033] The first correction coefficient and the second correction coefficient are linearly interpolated to obtain the target correction coefficient of the LED display screen.

[0034] According to the second aspect of the disclosed embodiment, a correction coefficient adjusting device for thermal effect of an LED display screen is provided, and the device comprises:

[0035] A relationship table establishing module is configured to pre-establish a temperature mapping relationship table between the front temperature and the back temperature of the LED display screen and a coefficient mapping relationship table Y3 between the front temperature and the correction coefficient.

[0036] A back temperature monitoring module is connected to the relationship table establishing module, configured to monitor the temperature of the LED display screen in real time, and collect the real-time back temperature value T0 of the LED display screen.

[0037] The front temperature acquisition module is connected with the back temperature monitoring module, and a corresponding front real-time temperature value is acquired according to a temperature mapping relationship table of the back real-time temperature value T0 of the LED display screen;

[0038] The correction coefficient adjustment module is connected with the front temperature acquisition module, and a target correction coefficient of the LED display screen is acquired according to the front real-time temperature value and a coefficient mapping table Y3, so as to adjust the correction coefficient of the LED display screen.

[0039] Optionally, the relationship table establishing module comprises:

[0040] The temperature adjustment unit starts to increase the front temperature of the LED display screen from 0℃;

[0041]

[0042] The correction coefficient acquisition unit is connected with the temperature adjustment unit, and a corresponding correction coefficient of the LED display screen is acquired every time the second preset temperature value t is increased, until the front temperature of the LED display screen reaches the highest temperature value T max and the temperature stops increasing;

[0043] The mapping relationship table acquisition unit is connected with the correction coefficient acquisition unit, and a coefficient mapping relationship table Y3 between the front temperature of the LED display screen and the correction coefficient is acquired.

[0044] Optionally, the front temperature acquisition module comprises:

[0045] The first temperature value acquisition unit is connected with the back temperature monitoring module, and a first front real-time temperature value T1 corresponding to the back real-time temperature value T0 is acquired according to the temperature increasing mapping relationship table Y1 when the back real-time temperature value T0 is monitored to increase;

[0046] The second temperature value acquisition unit is connected with the back temperature monitoring module, and a second front real-time temperature value T2 corresponding to the back real-time temperature value T0 is acquired according to the temperature decreasing mapping relationship table Y2 when the back real-time temperature value T0 is monitored to decrease.

[0047] Optionally, the correction coefficient adjustment module comprises:

[0048] The judgment unit determines whether a target temperature value exists in the coefficient mapping relationship table Y3, and a temperature difference between the target temperature value and the front real-time temperature value is less than the first preset temperature value t;

[0049] ​The first coefficient correction unit is connected with the judgment unit, and if the target temperature value exists, a correction coefficient corresponding to the target temperature value is determined as the target correction coefficient of the LED display screen according to a coefficient mapping relationship table Y3.

[0050] The both-end value acquisition unit is connected with the judgment unit, and if the target temperature value does not exist, the minimum value in all temperature values greater than the front real-time temperature value in the coefficient mapping relationship table Y3 and the first correction coefficient corresponding to the minimum value are selected, and the maximum value in all temperature values less than the front real-time temperature value in the coefficient mapping relationship table Y3 and the second correction coefficient corresponding to the maximum value are selected.

[0051] The second coefficient correction unit is connected with the both-end value acquisition unit, and the target correction coefficient of the LED display screen is acquired by performing linear interpolation calculation on the first correction coefficient and the second correction coefficient.

[0052] In summary, the present disclosure relates to a correction coefficient adjustment method and device for thermal effect of an LED display screen, and the method comprises the following steps: a temperature mapping relationship table between front temperature and back temperature of the LED display screen and a coefficient mapping relationship table Y3 between front temperature and correction coefficient are established in advance; the temperature of the LED display screen is monitored in real time, and a back real-time temperature value T0 of the LED display screen is collected; the corresponding front real-time temperature value is acquired according to the back real-time temperature value T0 of the LED display screen and the temperature mapping relationship table; and the target correction coefficient of the LED display screen is acquired according to the front real-time temperature value and the coefficient relationship mapping table Y3. The mapping relationship between the front temperature and the back temperature of the LED display screen is established, and the problems of delay, poor precision and poor effect caused by the installation of the temperature detector only on the back of the screen are solved. The temperature detector does not need to be installed on the front of the screen, the normal use of the screen is not affected, and the adjustment precision of the correction coefficient under the thermal effect is improved.

[0053] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0054] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following specific embodiments to explain the present disclosure but do not constitute a limitation on the present disclosure. In the drawings:

[0055] Figure 1 is a flow chart of a correction coefficient adjustment method for thermal effect of an LED display screen according to an exemplary embodiment;

[0056] Figure 2 is a flow chart of a correction coefficient adjustment method for thermal effect of an LED display screen according to an exemplary embodiment; Figure 1 is a flow chart of a correction coefficient adjustment method for thermal effect of an LED display screen according to an exemplary embodiment;

[0057] Figure 3 is according to Figure 1 a flow chart of a method for establishing a temperature mapping table is shown;

[0058] Figure 4 is according to Figure 1 a flow chart of a method for establishing a coefficient mapping table is shown;

[0059] Figure 5 is according to Figure 1 a flow chart of a method for adjusting a correction coefficient is shown;

[0060] Figure 6 is a structural block diagram of a correction coefficient adjustment device for thermal effects of an LED display according to an exemplary embodiment;

[0061] Figure 7 is according to Figure 6 a structural block diagram of a relationship table establishing module is shown;

[0062] Figure 8 is according to Figure 6 a structural block diagram of a front temperature obtaining module is shown;

[0063] Figure 9 is according to Figure 6 a structural block diagram of a correction coefficient adjustment module is shown. DETAILED DESCRIPTION

[0064] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0065] Figure 1 is a flow chart of a method for adjusting a correction coefficient for thermal effects of an LED display according to an exemplary embodiment, as shown in Figure 1 the method comprises:

[0066] In step 101, a temperature mapping table between the front temperature and the back temperature of the LED display screen, and a coefficient mapping table Y3 between the front temperature and the correction coefficient are established in advance.

[0067] For example, in order to adjust the correction coefficient under the thermal effects of the LED display screen, in the disclosed embodiments, the front temperature and the back temperature of the LED display screen are measured at different temperature values in advance, and a temperature mapping table between the front temperature and the back temperature is established.

[0068] Specifically, the temperature mapping table includes a temperature rising mapping table Y1, in a context of gradually rising temperature, a temperature rising mapping table Y1 between the front temperature and the back temperature of the LED display screen is established, and in a context of gradually falling temperature, a temperature falling mapping table Y2 between the front temperature and the back temperature of the LED display screen is established.

[0069] In addition, a coefficient mapping table Y3 between the front temperature of the LED display screen and the correction coefficient under different temperatures is also needed to be established, so that after the temperature of the LED display screen is monitored in the actual use process of the LED display screen, the correction coefficient under different temperatures of the LED display screen is adjusted according to the above-mentioned temperature rising mapping table Y1, the temperature falling mapping table Y2 and the coefficient mapping table Y3, and the target correction coefficient is obtained.

[0070] Specifically, Figures 2-4 The specific steps of establishing the temperature rising mapping table Y1, the temperature falling mapping table Y2 and the coefficient mapping table Y3 are respectively given.

[0071] Figure 2 In order to adjust the correction coefficient of the LED display screen according to Figure 1 The flow chart of the method for establishing a temperature rising mapping table is shown in FIG. 1, and the method includes the following steps. Figure 2

[0072] In step 201, the front temperature of the LED display screen is allowed to rise from room temperature.

[0073] For example, when the LED display screen is shipped, a temperature detector is placed in front of the LED display screen to measure the front temperature of the LED display screen, and a temperature detector is built-in at the back of the LED display screen to measure the back temperature of the LED display screen. The front temperature of the LED display screen is gradually increased from room temperature, and the first preset temperature value t of each increase is taken as a gradient value. The first preset temperature value t is 0.1℃.

[0074] In step 202, the back temperature of the LED display screen is collected every time the first preset temperature value t is increased, until the front temperature of the LED display screen cannot be increased by the first preset temperature value t within a preset time period.

[0075] For example, when the front temperature of the LED display screen is increased by the first preset temperature value t (0.1℃), the back temperature of the LED display screen is measured by the temperature detector built-in at the back of the LED display screen. In addition, when it is monitored that the front temperature of the LED display screen cannot be increased by the first preset temperature value t within a preset time period during the temperature rising process of the LED display screen, the temperature rising process of the LED display screen is stopped.

[0076] ​It should be noted that the temperature of the LED display screen increases continuously during the heating process, which can cause the screen temperature to be unstable, i.e., the heat effect has a greater impact on the correction coefficient. When the front temperature of the LED display screen cannot increase by 0.1℃ within a preset time period (preferably 10 minutes), it indicates that the screen temperature of the LED display screen has reached a stable state, and at this time, the heat effect of the screen on the correction coefficient has been reduced to be negligible, and the heating of the LED display screen is stopped.

[0077] In step 203, the highest temperature value T max .

[0078] In step 204, the heating mapping relationship table Y1 between the front temperature and the back temperature of the LED display screen is obtained.

[0079] For example, when the heating of the LED display screen is stopped, the highest temperature value T max of the front temperature of the LED display screen at this time is recorded, and the heating mapping relationship table Y1 is established according to the front temperature and the corresponding back temperature collected during the heating process.

[0080] Figure 3 According to Figure 1 a flowchart of a method for establishing a cooling mapping relationship table is shown, as Figure 3 shown, the method comprises:

[0081] In step 301, the temperature of the front of the LED display screen is started to be cooled from the highest temperature value T max .

[0082] For example, after the heating mapping relationship table Y1 is obtained, the front temperature of the LED display screen is cooled, and the highest temperature value T max is gradually reduced.

[0083] In step 302, the back temperature of the LED display screen is collected every time the first preset temperature value t is reduced, until the front temperature of the LED display screen cannot be reduced by the first preset temperature value t within a preset time period.

[0084] For example, the back temperature of the LED display screen is collected by the temperature detector built in the back of the LED display screen every time the back temperature of the LED display screen is reduced by the first preset temperature value t, and when it is monitored that the front temperature of the LED display screen cannot be reduced by the first preset temperature value t within a preset time period during the cooling of the LED display screen, the cooling of the LED display screen is stopped.

[0085] Similarly, the temperature of the LED display screen is continuously reduced during the cooling process, which will cause the screen temperature to be unstable, that is, the thermal effect has a greater impact on the correction coefficient. When the front temperature of the LED display screen cannot be reduced by 0.1℃ within a preset time period (preferably 10 minutes), it indicates that the screen temperature of the LED display screen has reached a stable state, at which time the thermal effect of the screen on the correction coefficient has been reduced to be negligible, and the cooling of the LED display screen is stopped.

[0086] In step 303, the minimum temperature value T min .

[0087] In step 304, the cooling mapping relationship table Y2 between the front temperature and the back temperature of the LED display screen is obtained.

[0088] For example, when the cooling of the LED display screen is stopped, the minimum temperature value T min of the front temperature of the LED display screen at this time is recorded, and the cooling mapping relationship table Y2 is established according to the front temperature and the corresponding back temperature collected during the cooling process.

[0089] Figure 4 According to Figure 1 a flow chart of a method for establishing a coefficient mapping relationship table is shown, as Figure 4 shown, the method comprises:

[0090] In step 401, the front temperature of the LED display screen is increased from 0℃.

[0091] For example, after the establishment of the cooling mapping relationship table Y2 and the cooling mapping relationship table Y2, the correction coefficient of the LED display screen corresponding to the front temperature of the LED display screen at different temperature values needs to be obtained. Therefore, the front temperature of the LED display screen needs to be gradually increased from 0℃, and the correction coefficient (the brightness correction coefficient in the disclosed embodiment of the present application) of the LED display screen needs to be obtained each time the front temperature of the LED display screen is increased by a second preset temperature value (preferably 10℃).

[0092] In step 402, the correction coefficient corresponding to the LED display screen is obtained each time the second preset temperature value is increased, until the front temperature of the LED display screen reaches the maximum temperature value T max and the temperature increasing is stopped.

[0093] In step 403, the coefficient mapping relationship table Y3 between the front temperature of the LED display screen and the correction coefficient is obtained.

[0094] ′

[0095] Specifically, at different temperature values (every second preset temperature value t during the temperature rising process), the images of the R, G and B light points on the screen of the LED display screen are collected by the camera, the brightness and color coordinates of each light point are obtained by image processing on the collected images, and the brightness correction coefficient of each light point is calculated according to the difference between the brightness and color coordinates of each light point, so as to determine the correction coefficient of the LED display screen at different temperature values. According to the front temperature of the LED display screen collected above and the correction coefficients corresponding to each different front temperature value, a coefficient mapping relationship table Y3 between the front temperature and the correction coefficient is established.

[0096] In step 102, the temperature of the LED display screen is monitored in real time, and the back real-time temperature value T0 of the LED display screen is collected.

[0097] For example, it can be understood that in actual application, it is inconvenient to place a temperature detector in front of the LED display screen to monitor the front temperature of the LED display screen. Therefore, in the disclosed embodiment, the back temperature of the LED display screen during use is monitored in real time by the temperature detector built in the back of the LED display screen, and the collected temperature is determined as the back real-time temperature value T0.

[0098] In step 103, the corresponding front real-time temperature value is obtained according to the back real-time temperature value T0 of the LED display screen and the temperature mapping relationship table.

[0099] For example, after the back real-time temperature value T0 is collected by the temperature detector built in the back of the LED display screen, the front real-time temperature value of the LED display screen is directly determined according to the back real-time temperature value T0 and the temperature mapping relationship.

[0100] Specifically, when it is monitored that the back real-time temperature value T0 increases, the first front real-time temperature value T1 corresponding to the back real-time temperature value T0 is obtained according to the temperature rising mapping relationship table Y1; when it is monitored that the back real-time temperature value T0 decreases, the second front real-time temperature value T2 corresponding to the back real-time temperature value T0 is obtained according to the temperature falling mapping relationship table Y2.

[0101] For example, after the back real-time temperature value T0 of the LED display screen is obtained, when it is judged that the back real-time temperature value T0 is in the temperature rising stage according to the continuous temperature change monitored by the temperature detector, the first front real-time temperature value T1 corresponding to the back real-time temperature value T0 is searched according to the temperature rising mapping relationship table Y1.

[0102] In step 104, the target correction coefficient of the LED display screen is obtained according to the front real-time temperature value and the coefficient relationship mapping table Y3, so as to adjust the correction coefficient of the LED display screen.

[0103] For example, the front real-time temperature value can be a first front real-time temperature value T1 or a second front real-time temperature value T2. After obtaining the first front real-time temperature value T1 of the LED display screen in the warming state, the correction coefficient corresponding to the first front real-time temperature value T1 can be obtained by searching the coefficient mapping relationship table Y3. Alternatively, after obtaining the second front real-time temperature value T2 of the LED display screen in the cooling state, the correction coefficient corresponding to the second front real-time temperature value T2 can be obtained by searching the coefficient mapping relationship table Y3.

[0104] Specifically, Figure 5 According to Figure 1 A flowchart of a correction coefficient adjustment method is shown. As shown in the figure, step 104 includes: Figure 5

[0105] In step 1041, it is determined whether there is a target temperature value in the coefficient mapping relationship table Y3.

[0106] Wherein, the temperature difference between the target temperature value and the front real-time temperature value is less than the first preset temperature value t.

[0107] In step 1042, if there is the target temperature value, the correction coefficient corresponding to the target temperature value is determined as the target correction coefficient of the LED display screen according to the coefficient mapping relationship table Y3.

[0108] For example, it can be understood that the temperature gradient in the coefficient mapping relationship table Y3 is 10℃, and the temperature gradient in the warming mapping relationship table Y1 is 0.1℃, so the numerical granularity in the warming mapping relationship table Y1 is finer. After determining the front real-time temperature value, it is necessary to query whether there is a target temperature value in the coefficient mapping relationship table Y3 which has a temperature difference of less than 0.1℃ from the front real-time temperature value. If there is a target temperature value, the target correction coefficient corresponding to the target temperature value can be directly queried in the coefficient mapping relationship table Y3, and the target correction coefficient is the correction coefficient under the adjustment of the thermal effect of the LED display screen.

[0109] In step 1043, if there is no target temperature value, the minimum value in all temperature values greater than the front real-time temperature value in the coefficient mapping relationship table Y3 is selected, as well as the first correction coefficient corresponding to the minimum value; and the maximum value in all temperature values less than the front real-time temperature value in the coefficient mapping relationship table Y3 is selected, as well as the second correction coefficient corresponding to the maximum value.

[0110] In step 1044, the first correction coefficient and the second correction coefficient are linearly interpolated to obtain the target correction coefficient of the LED display screen.

[0111] ​For example, taking the front real-time temperature value as the first front real-time temperature value T1, if there is no target temperature value in the coefficient mapping relationship table Y3 that has a difference of less than 0.1°C with the first front real-time temperature value T1, then according to the size relationship between the first front real-time temperature value T1 and the temperature values in the coefficient mapping relationship table Y3, the first correction coefficient corresponding to the temperature value that is only greater than the first front real-time temperature value T1 and the second correction coefficient corresponding to the temperature value that is only less than the first front real-time temperature value T1 are determined, and the target correction coefficient of the LED display screen is determined by linear interpolation calculation of the first correction coefficient and the second correction coefficient.

[0112] For example, the first front real-time temperature value T1 of the LED display screen is 36.7°C, and the temperature values in the coefficient mapping relationship table Y3 are 0°C, 10°C, 20°C, 30°C, 40°C, and 50°C. At this time, there is no temperature value in the coefficient mapping relationship table Y3 that has a difference of less than 0.1°C with the first front real-time temperature value T1. Therefore, the minimum value 40°C is selected from all temperature values greater than 36.7°C, and the first correction coefficient corresponding to 40°C in the coefficient mapping relationship table Y3 is determined. The maximum value 30°C is selected from all temperature values less than 36.7°C, and the second correction coefficient corresponding to 30°C in the coefficient mapping relationship table Y3 is determined. The target correction coefficient is calculated by linear interpolation method.

[0113] For example, taking the front real-time temperature value as the second front real-time temperature value T2, when the second front real-time temperature value T2 is determined, it is necessary to query whether there is a target temperature value in the coefficient mapping relationship table Y3 that has a difference of less than 0.1°C with the second front real-time temperature value T2. If there is a target temperature value, the target correction coefficient corresponding to the target temperature value in the coefficient mapping relationship table Y3 can be directly queried, and the target correction coefficient is the correction coefficient under the adjustment of the thermal effect of the LED display screen. If there is no target temperature value in the coefficient mapping relationship table Y3 that has a difference of less than 0.1°C with the second front real-time temperature value T2, then according to the size relationship between the second front real-time temperature value T2 and the temperature values in the coefficient mapping relationship table Y3, the first correction coefficient corresponding to the temperature value that is only greater than the second front real-time temperature value T2 and the second correction coefficient corresponding to the temperature value that is only less than the second front real-time temperature value T2 are determined, and the target correction coefficient of the LED display screen is determined by linear interpolation calculation of the first correction coefficient and the second correction coefficient.

[0114] Figure 6 is a structural block diagram of an LED display screen thermal effect correction coefficient adjustment device according to an example embodiment, as shown in Figure 6 the device 600 includes:

[0115] The relationship table establishing module 610 pre-establishes a temperature mapping relationship table between the front temperature and the back temperature of the LED display screen and a coefficient mapping relationship table Y3 between the front temperature and the correction coefficient;

[0116] The back temperature monitoring module 620 is connected with the relationship table establishing module 610, monitors the temperature of the LED display screen in real time, and collects the real-time back temperature value T0 of the LED display screen;

[0117] The front temperature obtaining module 630 is connected with the back temperature monitoring module 620, and obtains the corresponding real-time front temperature value according to the real-time back temperature value T0 of the LED display screen and the temperature mapping relationship table;

[0118] The correction coefficient adjusting module 640 is connected with the front temperature obtaining module 630, obtains the target correction coefficient of the LED display screen according to the real-time front temperature value and the coefficient mapping relationship table Y3, and adjusts the correction coefficient of the LED display screen.

[0119] Figure 7 According to Figure 6 The structure block diagram of a relationship table establishing module is shown in the figure, as Figure 7 The relationship table establishing module 610 comprises:

[0120] The temperature adjusting unit 611 makes the front temperature of the LED display screen start to rise from 0℃;

[0121] The correction coefficient obtaining unit 612 is connected with the temperature adjusting unit 611, and obtains the corresponding correction coefficient of the LED display screen when the second preset temperature

[0122] ′

[0123] is increased, until the front temperature of the LED display screen reaches the highest temperature value T max and stops rising;

[0124] The mapping relationship table obtaining unit 613 is connected with the correction coefficient obtaining unit 612, and obtains the coefficient mapping relationship table Y3 between the front temperature and the correction coefficient of the LED display screen.

[0125] Figure 8 According to Figure 6 The structure block diagram of a front temperature obtaining module is shown in the figure, as Figure 8 The front temperature obtaining module 630 comprises:

[0126] The first temperature value acquisition unit 631 is connected with the back temperature monitoring module 620. When it is monitored that the back real-time temperature value T0 increases, the first front real-time temperature value T1 corresponding to the back real-time temperature value T0 is acquired according to the temperature rising mapping relationship table Y1.

[0127] The second temperature value acquisition unit 632 is connected with the back temperature monitoring module 620. When it is monitored that the back real-time temperature value T0 decreases, the second front real-time temperature value T2 corresponding to the back real-time temperature value T0 is acquired according to the temperature falling mapping relationship table Y2.

[0128] Figure 9 According to Figure 6 The structure block diagram of a correction coefficient adjustment module is shown. As Figure 9 The correction coefficient adjustment module 640 includes:

[0129] The judgment unit 641 determines whether there is a target temperature value in the coefficient mapping relationship table Y3, and the temperature difference between the target temperature value and the front real-time temperature value is less than the first preset temperature value t.

[0130] The first coefficient correction unit 642 is connected with the judgment unit 641. If the target temperature value exists, the correction coefficient corresponding to the target temperature value is determined as the target correction coefficient of the LED display screen according to the coefficient mapping relationship table Y3.

[0131] The two-end value acquisition unit 643 is connected with the judgment unit 641. If the target temperature value does not exist, the minimum value in all temperature values greater than the front real-time temperature value in the coefficient mapping relationship table Y3 and the first correction coefficient corresponding to the minimum value are selected, and the maximum value in all temperature values less than the front real-time temperature value in the coefficient mapping relationship table Y3 and the second correction coefficient corresponding to the maximum value are selected.

[0132] The second coefficient correction unit 644 is connected with the two-end value acquisition unit 643. The first correction coefficient and the second correction coefficient are linearly interpolated to acquire the target correction coefficient of the LED display screen.

[0133] In summary, the present disclosure relates to a kind of LED display screen thermal effect correction coefficient adjustment method and device, the method includes: the temperature mapping relationship table between the front temperature and back temperature of LED display screen is established in advance, and the coefficient mapping relationship table Y3 between front temperature and correction coefficient;The temperature of LED display screen is monitored in real time, and the real-time temperature value T0 of LED display screen back is collected;According to the real-time temperature value T0 of LED display screen back and temperature mapping relationship table, corresponding front real-time temperature value is obtained;According to the real-time temperature value and coefficient relationship mapping table Y3, the target correction coefficient of LED display screen is obtained.The mapping relationship between the front temperature and back temperature of LED display screen can be established, the problems of only installing temperature detector on the back of screen exist, such as delay, poor precision and poor effect are solved, temperature detector does not need to be installed in front of screen, does not affect the normal use of screen, and the adjustment precision of correction coefficient under thermal effect is improved.

[0134] The preferred embodiments of the present disclosure are described in detail above in combination with the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0135] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction, and to avoid unnecessary repetition, various possible combination manners are not described again in the present disclosure.

[0136] Furthermore, various different embodiments of the present disclosure can also be combined arbitrarily, as long as it does not deviate from the idea of the present disclosure, it should also be considered as disclosed in the present disclosure.

Claims

1. A method for adjusting a correction factor of thermal effects of an LED display screen, characterized in that, The method comprises: pre-establishing a temperature mapping relationship table between the front temperature and the back temperature of the LED display screen and a coefficient mapping relationship table Y3 between the front temperature and the correction coefficient; monitoring the temperature of the LED display screen in real time, collecting a back real-time temperature value T0 of the LED display screen; obtaining a corresponding front real-time temperature value according to the back real-time temperature value T0 of the LED display screen and the temperature mapping relationship table; obtaining a target correction coefficient of the LED display screen according to the front real-time temperature value and the coefficient mapping relationship table Y3, so as to adjust the correction coefficient of the LED display screen; The temperature mapping relationship table comprises a temperature rising mapping relationship table Y1, and a process for establishing the temperature rising mapping relationship table Y1 comprises: starting to raise a front surface temperature of the LED display screen from room temperature; collecting a back surface temperature of the LED display screen every time the front surface temperature increases by a first preset temperature value t, until the front surface temperature fails to increase by the first preset temperature value t within a preset time period, and then stopping; determining a highest temperature value T of the front surface temperature max ; and obtaining a temperature rising mapping relationship table Y1 between the front surface temperature and the back surface temperature of the LED display screen. The temperature mapping table includes a temperature drop mapping table Y2, and a process for establishing the temperature drop mapping table Y2 includes: allowing the temperature of the front surface of the LED display screen to decrease from the highest temperature value T max Start temperature drop; collect the temperature of the back surface of the LED display screen every time the first preset temperature value t is decreased, and stop when the temperature of the front surface of the LED display screen cannot decrease by the first preset temperature value t within a preset time period; determine the lowest temperature value T min of the front surface temperature; and obtain a temperature drop mapping table Y2 between the front surface temperature and the back surface temperature of the LED display screen. 2.The method of claim 1, wherein, the establishment process of the coefficient mapping relationship table Y3 comprises: starting to increase the front temperature of the LED display screen from 0℃; every time the second preset temperature value is increased obtaining a correction coefficient corresponding to the LED display screen until the front temperature of the LED display screen reaches the highest temperature value T max stops heating. obtaining the coefficient mapping relationship table Y3 between the front temperature of the LED display screen and the correction coefficient. 3.The method of claim 1, wherein, The obtaining of the corresponding front real-time temperature value according to the back real-time temperature value T0 of the LED display screen and the temperature mapping relationship table comprises: when the back real-time temperature value T0 is monitored to increase, obtaining a first front real-time temperature value T1 corresponding to the back real-time temperature value T0 according to the temperature increasing mapping relationship table Y1; when the back real-time temperature value T0 is monitored to decrease, obtaining a second front real-time temperature value T2 corresponding to the back real-time temperature value T0 according to the temperature decreasing mapping relationship table Y2. 4.The method of claim 1, wherein, The obtaining of the target correction coefficient of the LED display screen according to the front real-time temperature value and the coefficient mapping relationship table Y3 comprises: determining whether there is a target temperature value in the coefficient mapping relationship table Y3, wherein a temperature difference between the target temperature value and the front real-time temperature value is less than the first preset temperature value t; if the target temperature value exists, determining a correction coefficient corresponding to the target temperature value as the target correction coefficient of the LED display screen according to the coefficient mapping relationship table Y3; if the target temperature value does not exist, selecting a minimum value and a first correction coefficient corresponding to the minimum value from all temperature values greater than the front real-time temperature value in the coefficient mapping relationship table Y3, and selecting a maximum value and a second correction coefficient corresponding to the maximum value from all temperature values less than the front real-time temperature value in the coefficient mapping relationship table Y3; performing linear interpolation calculation on the first correction coefficient and the second correction coefficient to obtain the target correction coefficient of the LED display screen.

5. An LED display screen thermal effect correction factor adjustment device, characterized in that, The device comprises: a relationship table establishment module, which pre-establishes a temperature mapping relationship table between the front temperature and the back temperature of the LED display screen and a coefficient mapping relationship table Y3 between the front temperature and the correction coefficient; a back temperature monitoring module, which is connected with the relationship table establishment module, monitors the temperature of the LED display screen in real time, and collects a back real-time temperature value T0 of the LED display screen; a front temperature obtaining module, which is connected with the back temperature monitoring module, obtains a corresponding front real-time temperature value according to the back real-time temperature value T0 of the LED display screen and the temperature mapping relationship table; The correction coefficient adjustment module is connected with the front surface temperature acquisition module, and obtains a target correction coefficient of the LED display screen according to the front surface real-time temperature value and a coefficient relationship mapping table Y3, so as to adjust the correction coefficient of the LED display screen. The temperature mapping relationship table comprises a temperature rising mapping relationship table Y1, and a process for establishing the temperature rising mapping relationship table Y1 comprises: starting to raise a front surface temperature of the LED display screen from room temperature; collecting a back surface temperature of the LED display screen every time the front surface temperature increases by a first preset temperature value t, until the front surface temperature fails to increase by the first preset temperature value t within a preset time period, and then stopping; determining a highest temperature value T of the front surface temperature max ; and obtaining a temperature rising mapping relationship table Y1 between the front surface temperature and the back surface temperature of the LED display screen. The temperature mapping table includes a temperature decreasing mapping table Y2, and a process for establishing the temperature decreasing mapping table Y2 includes: allowing the temperature of the front surface of the LED display screen to decrease from the highest temperature value T max Start temperature decreasing; collect the temperature of the back surface of the LED display screen every time the first preset temperature value t is decreased, and stop when the temperature of the front surface of the LED display screen cannot decrease by the first preset temperature value t within a preset time period; determine the lowest temperature value T min of the front surface temperature; and obtain a temperature decreasing mapping table Y2 between the front surface temperature and the back surface temperature of the LED display screen.

6. The LED display screen thermal effect correction factor adjustment device according to claim 5, characterized in that, The relationship table establishing module comprises: The temperature adjustment unit causes the front surface temperature of the LED display screen to increase from 0℃; The correction coefficient acquisition unit is connected with the temperature adjusting unit, and a correction coefficient corresponding to the LED display screen is acquired every time the second preset temperature value is increased until the front temperature of the LED display screen reaches the highest temperature value T . max ; The mapping relationship table acquisition unit is connected with the correction coefficient acquisition unit, and acquires a coefficient mapping relationship table Y3 between the front surface temperature of the LED display screen and the correction coefficient.

7. The LED display screen thermal effect correction factor adjustment device according to claim 5, characterized in that, The front surface temperature acquisition module comprises: The first temperature value acquisition unit is connected with the back surface temperature monitoring module, and when it is monitored that the back surface real-time temperature value T0 increases, a first front surface real-time temperature value T1 corresponding to the back surface real-time temperature value T0 is acquired according to the temperature increase mapping relationship table Y1; The second temperature value acquisition unit is connected with the back surface temperature monitoring module, and when it is monitored that the back surface real-time temperature value T0 decreases, a second front surface real-time temperature value T2 corresponding to the back surface real-time temperature value T0 is acquired according to the temperature decrease mapping relationship table Y2. 8.The LED display screen thermal effect correction coefficient adjustment device according to claim 5, characterized in that, The correction coefficient adjustment module comprises: The judgment unit determines whether there is a target temperature value in the coefficient mapping relationship table Y3, and the temperature difference between the target temperature value and the front surface real-time temperature value is less than the first preset temperature value t; The first coefficient correction unit is connected with the judgment unit, and if there is the target temperature value, a correction coefficient corresponding to the target temperature value is determined as the target correction coefficient of the LED display screen according to the coefficient mapping relationship table Y3; The two-end value acquisition unit is connected with the judgment unit, and if there is no target temperature value, a minimum value in all temperature values greater than the front surface real-time temperature value in the coefficient mapping relationship table Y3 and a first correction coefficient corresponding to the minimum value are selected, and a maximum value in all temperature values less than the front surface real-time temperature value in the coefficient mapping relationship table Y3 and a second correction coefficient corresponding to the maximum value are selected; The second coefficient correction unit is connected with the two-end value acquisition unit, and linear interpolation calculation is performed on the first correction coefficient and the second correction coefficient to obtain the target correction coefficient of the LED display screen.

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