CN113744686B - Automatic brightness adjusting system of LED spliced screen - Google Patents
Automatic brightness adjusting system of LED spliced screen Download PDFInfo
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- CN113744686B CN113744686B CN202111049571.0A CN202111049571A CN113744686B CN 113744686 B CN113744686 B CN 113744686B CN 202111049571 A CN202111049571 A CN 202111049571A CN 113744686 B CN113744686 B CN 113744686B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The invention discloses an automatic brightness adjusting system of an LED (light-emitting diode) spliced screen, which comprises a CPU (central processing unit), a plurality of under-screen sensors, a plurality of outer-screen edge sensors, a dot matrix distribution processing module, a screen controller, an automatic adjusting module and an optimizing module, wherein the brightness of the LED spliced screen can be automatically adjusted according to the brightness of an external environment, the condition that the screen display is not clear enough or not bright enough under different brightness environments is met, meanwhile, the automatic adjusting module and the optimizing module are added in the calculation process of the optimal brightness value, the screen brightness has the functions of self-adjusting, optimizing and updating, the brightness can be automatically adjusted and updated according to requirements when people of different ages and different physical conditions face, and the problem that the brightness of the screen set by the system can not be automatically adjusted and used by different people is solved.
Description
Technical Field
The invention relates to the technical field of automatic screen brightness adjustment, in particular to an automatic brightness adjustment system of an LED spliced screen.
Background
The spliced screen is a large-screen spliced screen formed by a plurality of display screens serving as display units and arranged in a matrix (such as 2 x 2, 3 x 3, 4 x 4 and larger free and infinite splicing), each display screen displays one part of one image, and the spliced screen arranged in the matrix can display the image with larger area together or can display different images in a split screen mode.
The LED concatenation screen utilizes the display screen concatenation more than two to form, and if the luminance display effect that the panel of these individual display screens shows under the same environment is different, then the viewer meets in the place of panel, and the picture that sees can be discontinuous, and holistic illumination in the face of external environment is different, can't adjust self luminance in order to satisfy better viewing effect.
Disclosure of Invention
The invention aims to provide an automatic brightness adjusting system of an LED spliced screen, which solves the following technical problems:
the panel of display screen shows different luminance display effect under the same environment, and then the viewer is in the place that the panel meets, and the picture that sees can be discontinuous, and holistic when the illumination facing external environment is different, can't adjust self luminance in order to satisfy better viewing effect.
The purpose of the invention can be realized by the following technical scheme:
the automatic brightness adjusting system of the LED spliced screen comprises a CPU, a plurality of under-screen sensors, a plurality of outer-screen edge sensors, a dot matrix distribution processing module, a screen controller, an automatic adjusting module and an optimizing module;
the CPU is used for information marking of the spliced screen and adjusting the brightness of the LED spliced screen;
the plurality of under-screen sensors are used for acquiring the initial brightness of each LED spliced screen;
the plurality of screen outer edge sensors are used for collecting the illumination intensity of the environment where the LED spliced screen is located;
the dot matrix distribution processing module is used for acquiring, labeling and processing information of the sensor under the screen and the sensor at the outer edge of the screen
As a further scheme of the invention: and the under-screen sensor and the outer-screen edge sensor are both illumination sensors.
As a further scheme of the invention: the plurality of under-screen sensors are respectively arranged below each LED spliced screen and are connected in parallel; and the plurality of screen outer edge sensors are respectively arranged at four right-angle positions of the spliced LED spliced screen and are connected in series.
As a further scheme of the invention: the lattice allocation processing module comprises the following specific steps:
step S1: acquiring initial brightness information of an off-screen sensor below each LED spliced screen, and respectively marking the initial brightness information as C (x, y), wherein the C (x, y) is the brightness value of the ith row of LED spliced screens with the x column number, x is 1, 2, 3, … and n, and y is 1, 2, 3, … and m;
step S2: acquiring illumination intensity information acquired by each sensor at the outer edge of the screen at intervals of time T, and marking the illumination intensity information as GT (a, b), wherein the GT (a, b) is an illumination intensity value, the value of a is 1 and n, and the value of b is 1 and m;
step S3: calculating GTj the average value of the illumination intensity by using a formula;
step S4: calculating by using the average value of the illumination intensity and a screen brightness value setting formula to obtain the optimal brightness value Cy of the LED spliced screen: in particular
When 0 is not more than GTj and is less than 200, Cy is 25+ K GTj, and K is 0.25;
when 200 is less than or equal to GTj and less than 1000, Cy is 26+ Q GTj, and Q is 0.12;
when the 1000 is not less than GTj and is less than 5000, Cy is 126+ P GTj, and P is 0.02;
when the molecular weight is 5000-GTj, Cy is 240;
step S5: selecting any brightness value to carry out lattice linkage labeling, namely taking the point of the brightness value as a center, picking up the brightness value above, below, on the left side and on the right side of the brightness point to obtain a linkage inner set Cj of each brightness value, namely, Cj ═ C (x, y-1), C (x, y +1), C (x, y), C (x-1, y) and C (x +1, y) };
step S6: selecting the brightness value Cjmin closest to Cy in each linkage inner set Cj;
step S7: calculating a difference ratio CZB between the selected brightness value Cjmin and the optimal brightness value Cy by using a formula, wherein when the CZB is less than or equal to 5%, the brightness confirmation value Cq of the LED spliced screen is the selected brightness value Cjmin; when CZB is more than 5%, the brightness confirmation value Cq of the LED spliced screen is the optimal brightness value Cy.
As a further scheme of the invention: and after the CPU obtains the brightness confirmation value Cq of the LED spliced screen, the brightness of each LED spliced screen is adjusted.
As a further scheme of the invention: the screen controller is used for controlling the mechanical opening and closing of the screen.
As a further scheme of the invention: the automatic adjustment module is used for automatically adjusting the screen brightness value Cz according to the self requirement of a user.
As a further scheme of the invention: the optimization module is used for optimizing an optimal brightness value calculation formula in the dot matrix distribution processing module, and comprises the following specific steps:
and acquiring Cz in the automatic adjustment module, acquiring an illumination intensity average value GTj of the same time point, and substituting GTj and Cz into the corresponding optimal brightness value calculation formula according to the value range of the illumination intensity GTj to update the proportionality coefficient of the formula.
The invention has the beneficial effects that:
according to the invention, the brightness automatic adjustment system of the LED spliced screen monitors the illumination intensity of the external environment, then monitors the screen brightness of each LED spliced screen, and then automatically adjusts the screen brightness of the LED spliced screen according to the optimal brightness value, so that the function of automatically adjusting each spliced screen is achieved, and the condition that the brightness of each spliced screen is different in the use process of the spliced screen is solved;
secondly, this luminance automatic adjustment system of LED concatenation screen can be according to the luminance automatic adjustment LED concatenation screen self luminance of external environment, the condition that the screen display is clear inadequately or bright inadequately under the different luminance environment is satisfied, simultaneously, in the calculation process of optimum brightness value, automatic adjustment module and optimization module have been increased, screen luminance has the function of self-adjustment and optimization update, face the crowd of different ages, different health, can adjust and update by oneself according to the demand, the problem that the system sets for screen luminance automatic adjustment can't satisfy different crowds and use has been solved.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an automatic brightness adjusting system of an LED tiled screen according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the invention relates to an automatic brightness adjusting system for an LED tiled screen, which comprises a CPU, a plurality of sensors under the screen, a plurality of sensors at the outer edge of the screen, a dot matrix allocation processing module, a screen controller, an automatic adjusting module, and an optimizing module;
the CPU is used for information marking of the spliced screen and adjusting the brightness of the LED spliced screen; the screen lower sensor is used for acquiring the initial brightness of each LED spliced screen; the screen outer edge sensor is used for collecting the illumination intensity of the environment where the LED spliced screen is located; and the dot matrix distribution processing module is used for acquiring, linking and marking information of the sensor under the screen and the sensor at the outer edge of the screen and processing the information.
Specifically, the under-screen sensor and the outside-screen edge sensor are both illumination sensors, and the under-screen sensors are respectively arranged below each LED spliced screen and are connected in parallel; the outer screen edge sensors are respectively arranged at four right-angle parts after the LED spliced screen is spliced and are connected in series; the screen controller is used for controlling the mechanical opening and closing of the screen.
The lattice allocation processing module comprises the following specific steps:
step S1: acquiring initial brightness information of an off-screen sensor below each LED spliced screen, and respectively marking the initial brightness information as C (x, y), wherein the C (x, y) is the brightness value of the ith row of LED spliced screens with the x column number, x is 1, 2, 3, … and n, and y is 1, 2, 3, … and m;
step S2: acquiring illumination intensity information acquired by each sensor at the outer edge of the screen at intervals of time T, and marking the illumination intensity information as GT (a, b), wherein the GT (a, b) is an illumination intensity value, the value of a is 1 and n, and the value of b is 1 and m;
step S3: calculating GTj the average value of the illumination intensity by using a formula;
step S4: calculating by using the average value of the illumination intensity and a screen brightness value setting formula to obtain the optimal brightness value Cy of the LED spliced screen: in particular
When 0 is not more than GTj and is less than 200, Cy is 25+ K GTj, and K is 0.25;
when 200 is less than or equal to GTj and less than 1000, Cy is 26+ Q GTj, and Q is 0.12;
when the 1000 is not less than GTj and is less than 5000, Cy is 126+ P GTj, and P is 0.02;
when the molecular weight is 5000-GTj, Cy is 240;
step S5: selecting any brightness value to carry out lattice linkage labeling, namely taking the point of the brightness value as a center, picking up the brightness value above, below, on the left side and on the right side of the brightness point to obtain a linkage inner set Cj of each brightness value, namely, Cj ═ C (x, y-1), C (x, y +1), C (x, y), C (x-1, y) and C (x +1, y) };
step S6: selecting the brightness value Cjmin closest to Cy in each linkage inner set Cj;
step S7: calculating a difference ratio CZB between the selected brightness value Cjmin and the optimal brightness value Cy by using a formula, wherein when the CZB is less than or equal to 5%, the brightness confirmation value Cq of the LED spliced screen is the selected brightness value Cjmin; when CZB is more than 5%, the brightness confirmation value Cq of the LED spliced screen is the optimal brightness value Cy.
Then, after acquiring the brightness confirmation value Cq of the LED spliced screen, the CPU adjusts the brightness of each LED spliced screen.
The automatic brightness adjusting system for the LED spliced screen monitors the illumination intensity of the external environment, monitors the screen brightness of each LED spliced screen, automatically adjusts the screen brightness of each LED spliced screen according to the optimal brightness value, has the function of automatically adjusting each spliced screen, and solves the problem that the spliced screen has different screen brightness in the using process.
And secondly, the automatic adjusting module is used for automatically adjusting the screen brightness value Cz according to the self requirement of the user.
The optimization module is used for optimizing an optimal brightness value calculation formula in the dot matrix distribution processing module, and comprises the following specific steps:
and acquiring Cz in the automatic adjustment module, acquiring an illumination intensity average value GTj of the same time point, and substituting GTj and Cz into the corresponding optimal brightness value calculation formula according to the value range of the illumination intensity GTj to update the proportionality coefficient of the formula.
This luminance automatic adjustment system of LED concatenation screen can be according to the luminance automatic adjustment LED concatenation screen self luminance of external environment, the condition that the screen display is clear inadequately or bright inadequately under the different luminance environment is satisfied, and simultaneously, in the computational process of optimal brightness value, automatic adjustment module and optimization module have been increased, screen luminance has the function of self-adjustment and optimization update, in the face of different ages, the crowd of different health, can adjust and update by oneself according to the demand, the problem that the system sets for screen luminance automatic adjustment can't satisfy different crowds and use has been solved.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
- The automatic brightness adjusting system of the LED spliced screen is characterized by comprising a CPU, a plurality of under-screen sensors, a plurality of outer-screen edge sensors, a dot matrix distribution processing module, a screen controller, an automatic adjusting module and an optimizing module;the CPU is used for information marking of the spliced screen and adjusting the brightness of the LED spliced screen;the plurality of under-screen sensors are used for acquiring the initial brightness of each LED spliced screen;the plurality of screen outer edge sensors are used for collecting the illumination intensity of the environment where the LED spliced screen is located;the dot matrix distribution processing module is used for acquiring, linking, marking and processing information of the sensor under the screen and the sensor at the outer edge of the screen;the lattice allocation processing module comprises the following specific steps:step S1: acquiring initial brightness information of an off-screen sensor below each LED spliced screen, and respectively marking the initial brightness information as C (x, y), wherein the C (x, y) is the brightness value of the ith row of LED spliced screens with the x column number, x is 1, 2, 3, … and n, and y is 1, 2, 3, … and m;step S2: acquiring illumination intensity information acquired by each sensor at the outer edge of the screen at intervals of time T, and marking the illumination intensity information as GT (a, b), wherein the GT (a, b) is an illumination intensity value, the value of a is 1 and n, and the value of b is 1 and m;step S3: calculating GTj the average value of the illumination intensity by using a formula;step S4: and setting an optimal brightness value calculation formula by utilizing the average value of the illumination intensity and the screen brightness value to calculate to obtain the optimal brightness value Cy of the LED spliced screen: in particularWhen 0 is not more than GTj and is less than 200, Cy is 25+ K GTj, and K is 0.25;when 200 is less than or equal to GTj and less than 1000, Cy is 26+ Q GTj, and Q is 0.12;when the 1000 is not less than GTj and is less than 5000, Cy is 126+ P GTj, and P is 0.02;when the molecular weight is 5000-GTj, Cy is 240;step S5: selecting any brightness value to carry out lattice linkage labeling, namely taking the point of the brightness value as a center, picking up the brightness value above, below, on the left side and on the right side of the brightness point to obtain a linkage inner set Cj of each brightness value, namely, Cj ═ C (x, y-1), C (x, y +1), C (x, y), C (x-1, y) and C (x +1, y) };step S6: selecting the brightness value Cjmin closest to Cy in each linkage inner set Cj;step S7: calculating a difference ratio CZB between the selected brightness value Cjmin and the optimal brightness value Cy by using a formula, wherein when the CZB is less than or equal to 5%, the brightness confirmation value Cq of the LED spliced screen is the selected brightness value Cjmin; when CZB is more than 5%, the brightness confirmation value Cq of the LED spliced screen is the optimal brightness value Cy.
- 2. The system for automatically adjusting the brightness of the LED tiled screen according to claim 1, wherein the under-screen sensor and the outside-screen edge sensor are both illumination sensors.
- 3. The automatic brightness adjusting system for the LED spliced screen as claimed in claim 1, wherein a plurality of the under-screen sensors are respectively installed below each LED spliced screen and connected in parallel; and the plurality of screen outer edge sensors are respectively arranged at four right-angle positions of the spliced LED spliced screen and are connected in series.
- 4. The system for automatically adjusting the brightness of the LED spliced screen as claimed in claim 1, wherein the CPU adjusts the brightness of each LED spliced screen after acquiring the brightness confirmation value Cq of the LED spliced screen.
- 5. The system for automatically adjusting the brightness of the LED spliced screen as claimed in claim 1, wherein the screen controller is used for controlling the mechanical opening and closing of the screen.
- 6. The system for automatically adjusting the brightness of the LED tiled screen according to claim 1, wherein the automatic adjusting module is used for a user to automatically adjust the screen brightness value Cz according to the user's own needs.
- 7. The system for automatically adjusting the brightness of the LED spliced screen according to claim 1, wherein the optimization module is used for optimizing an optimal brightness value calculation formula in the dot matrix distribution processing module, and the method comprises the following specific steps:and acquiring Cz in the automatic adjustment module, acquiring an average value GTj of the illumination intensity at the same time point, and substituting GTj and Cz into the corresponding optimal brightness value calculation formula according to the range of the illumination intensity GTj to update the proportionality coefficient of the formula.
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| JP2004200770A (en) * | 2002-12-16 | 2004-07-15 | Fuji Photo Film Co Ltd | Brightness adjustsment system |
| CN100578602C (en) * | 2007-08-27 | 2010-01-06 | 重庆大学 | Automatic brightness control device of outdoor full color LED big screen display screen and method thereof |
| GB2473639A (en) * | 2009-09-18 | 2011-03-23 | Litelogic Ip Ltd | Display with multiple PCBs mounted to bus-bars |
| CN102054468A (en) * | 2011-01-06 | 2011-05-11 | 广东威创视讯科技股份有限公司 | Automatic brightness adjusting device for digital light processing (DLP) split display system |
| CN103996392B (en) * | 2014-05-12 | 2016-04-13 | 合肥鑫晟光电科技有限公司 | A kind of method, circuit and display device adjusting screen intensity |
| JP6523151B2 (en) * | 2015-12-09 | 2019-05-29 | 富士フイルム株式会社 | Display device |
| CN107784985A (en) * | 2016-08-31 | 2018-03-09 | 上海阳淳电子股份有限公司 | A kind of control system for automatically adjusting mosaic display screen brightness |
| CN107741670A (en) * | 2017-11-03 | 2018-02-27 | 惠科股份有限公司 | A kind of display device and its control method |
| CN108320714A (en) * | 2017-12-30 | 2018-07-24 | 广东创捷智能科技有限公司 | A kind of brightness uniformity display methods and device applied to liquid crystal-spliced screen |
| CN209070960U (en) * | 2018-12-21 | 2019-07-05 | 深圳市一米云安保运营有限公司 | A kind of mosaic screen with automatic light sensation regulatory function |
| CN212022535U (en) * | 2020-05-11 | 2020-11-27 | 北京北匠科技有限公司 | Head-up display system connected with vehicle body bus system |
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