CN117095653B - Projection LCD screen protection system - Google Patents
Projection LCD screen protection system Download PDFInfo
- Publication number
- CN117095653B CN117095653B CN202311147070.5A CN202311147070A CN117095653B CN 117095653 B CN117095653 B CN 117095653B CN 202311147070 A CN202311147070 A CN 202311147070A CN 117095653 B CN117095653 B CN 117095653B
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- China
- Prior art keywords
- screen
- module
- acquisition module
- picture
- backlight
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Classifications
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
- H05K7/20972—Forced ventilation, e.g. on heat dissipaters coupled to components
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/04—Display protection
- G09G2330/045—Protection against panel overheating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Liquid Crystal (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The invention belongs to the technical field of screen protection, and discloses a projection LCD screen protection system, wherein a control module is used for controlling the running states of a screen temperature acquisition module, a screen display brightness acquisition module, an environment temperature acquisition module, a cooling fan, a screen picture acquisition module and a backlight module and analyzing whether a display picture is completely black according to a display picture acquired by the screen picture acquisition module; the power control module is used for controlling the power of the cooling module to be in a corresponding size according to the ambient temperature acquired by the ambient temperature acquisition module; the device is used for controlling the power change of the cooling module and the backlight brightness change of the backlight module according to whether the display picture is completely black or not and the screen temperature acquired by the screen temperature acquisition module. The invention controls the rotation speed of the cooling fan, and the backlight adjustment and closing in a linkage way to achieve the effects of saving energy and improving efficiency and the service life of the projection LCD screen.
Description
Technical Field
The invention belongs to the technical field of screen protection, and particularly relates to a projection LCD screen protection system.
Background
The projection LCD screen dynamically adjusts the rotating speed of the fan and the backlight brightness by acquiring the display brightness and the screen temperature of the current screen in real time, so that the LCD screen is protected, and the service life of the screen is prolonged. However, when the LCD screen displays a black screen, heat is concentrated due to the fact that light cannot be transmitted, the temperature is rapidly increased, and the screen is burned, so that no good solution is provided for the situation.
The disclosure of this background section is only intended to increase the understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art already known to those of ordinary skill in the art.
Disclosure of Invention
The present invention aims to solve the above technical problems at least to some extent. To this end, the present invention aims to provide a projection LCD screen protection system.
The technical scheme adopted by the invention is as follows:
A projection LCD screen protection system, comprising:
the screen temperature acquisition module is used for acquiring the screen temperature of the LCD screen;
the screen display brightness acquisition module is used for acquiring screen display brightness of the LCD screen;
the environment temperature acquisition module is used for acquiring the working environment temperature of the LCD screen;
the cooling module is used for cooling the LCD screen;
The screen picture acquisition module is used for acquiring display picture pictures of the LCD screen;
the backlight module is used for emitting backlight to illuminate the LCD screen;
the control module is used for controlling the running states of the screen temperature acquisition module, the screen display brightness acquisition module, the environment temperature acquisition module, the cooling fan, the screen picture acquisition module and the backlight module and analyzing whether the display picture is completely black according to the display picture acquired by the screen picture acquisition module; the power control module is used for controlling the power of the cooling module to be in a corresponding size according to the ambient temperature acquired by the ambient temperature acquisition module; the device is used for controlling the power change of the cooling module and the backlight brightness change of the backlight module according to whether the display picture is completely black or not and the screen temperature acquired by the screen temperature acquisition module.
Preferably, the control module controls the screen temperature acquisition module, the environment temperature acquisition module, the cooling module and the backlight module to be normally open;
When the screen temperature acquired by the screen temperature acquisition module is higher than the temperature threshold, the control module controls the cooling module to increase power and controls the backlight module to reduce backlight brightness until the screen temperature is lower than the temperature threshold.
Preferably, the control module controls the screen display brightness acquisition module, the environment temperature acquisition module, the cooling module and the backlight module to be normally open, and controls the screen image acquisition module to be normally closed;
When the screen display brightness acquired by the screen display brightness acquisition module is lower than a brightness threshold value, the control module controls the screen picture acquisition module to acquire display picture pictures of the LCD screen, and analyzes whether the display picture is completely black according to the display picture pictures acquired by the screen picture acquisition module;
when the display picture is completely black, the control module controls the backlight module to be turned off; when the display picture is not completely black, the control module controls the backlight module to reduce the backlight brightness.
Preferably, the control module analyzes the gray scale of the picture of each region according to the display picture acquired by the screen picture acquisition module to calculate the brightness of the picture, thereby judging whether the display picture is completely black.
The beneficial effects of the invention are as follows:
according to the invention, the screen temperature is read in real time, the picture is displayed, the rotating speed of the cooling fan, the backlight adjustment and the closing are controlled in a linkage way by combining the ambient temperature, so that the energy saving and efficiency improvement are achieved, the service life of the projection LCD screen is prolonged, and the high-contrast experience is improved.
Drawings
Fig. 1 is a schematic diagram of a projection LCD screen protection system according to the present invention.
Fig. 2 is a flow chart of a projection LCD screen protection system of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should also be appreciated that in the embodiments, the functions/acts may occur in a different order than the figures. For example, two figures shown in succession may in fact be executed substantially concurrently or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
As shown in fig. 1 and 2, a projection LCD screen protection system of the present embodiment includes a screen temperature acquisition module, a screen display brightness acquisition module, an ambient temperature acquisition module, a cooling module, a screen image acquisition module, a backlight module, and a control module.
The screen temperature acquisition module is used for acquiring the screen temperature of the LCD screen;
the screen display brightness acquisition module is used for acquiring screen display brightness of the LCD screen;
The environment temperature acquisition module is used for acquiring the environment temperature of the work of the LCD screen; the environmental temperature acquisition module is arranged on the NTC sensor;
The cooling module is used for cooling the LCD screen; the cooling module is a cooling fan;
The screen picture acquisition module is used for acquiring display picture pictures of the LCD screen; the screen image acquisition module comprises a screen recording unit and a camera shooting unit, wherein the screen recording unit captures the display image of the LCD screen through screencap, and the camera shooting unit shoots through a camera to obtain the display image of the LCD screen;
the control module is used for controlling the running states of the screen temperature acquisition module, the screen display brightness acquisition module, the environment temperature acquisition module, the cooling fan, the screen picture acquisition module and the backlight module.
The control module is also used for analyzing whether the display picture is completely black according to the display picture acquired by the screen picture acquisition module; specifically, the control module analyzes the gray scale of the picture of each region according to the display picture acquired by the screen picture acquisition module to calculate the brightness of the picture, thereby judging whether the display picture is completely black.
The control module is also used for controlling the power of the cooling module to be in a corresponding size according to the ambient temperature collected by the ambient temperature collection module; specifically, the cooling module is in different power gears at different ambient temperatures.
The control module is also used for controlling the power change of the cooling module and the backlight brightness change of the backlight module according to whether the display picture is completely black or not and the screen temperature acquired by the screen temperature acquisition module.
Specifically, the control module controls the screen display brightness acquisition module, the screen temperature acquisition module, the environment temperature acquisition module, the cooling module and the backlight module to be normally open, and controls the screen picture acquisition module to be normally closed;
When the screen temperature acquired by the screen temperature acquisition module is higher than the temperature threshold, the control module controls the cooling module to increase power and controls the backlight module to reduce backlight brightness until the screen temperature is lower than the temperature threshold.
When the screen display brightness acquired by the screen display brightness acquisition module is lower than a brightness threshold value, the control module controls the screen picture acquisition module to acquire display picture pictures of the LCD screen, and analyzes whether the display picture is completely black according to the display picture pictures acquired by the screen picture acquisition module;
when the display picture is completely black, the control module controls the backlight module to be turned off; when the display picture is not completely black, the control module controls the backlight module to reduce the backlight brightness.
The projection LCD screen protection system monitors the screen temperature and the screen display brightness in real time after starting to operate, when the screen temperature is too high or when the screen display brightness is lower than a brightness threshold value, the dynamic adjustment mode is entered, namely, when the screen temperature is too high, the rotation speed of the cooling fan is increased (the rotation speed is increased to 100 percent at the highest), the backlight brightness is synchronously reduced (the minimum reduction is 60 percent), when the screen display brightness is lower than the brightness threshold value, the control module is used for judging whether the displayed picture is a full black picture, if the displayed picture is the full black picture, the backlight is turned off, the rotation speed of the cooling fan is reduced after 20 seconds, if the displayed picture is not the full black picture, the backlight brightness is reduced, and the rotation speed of the cooling fan is adjusted according to the environment temperature.
A projection LCD screen protection method adopts the projection LCD screen protection system to protect the projection LCD screen.
A storage medium having stored thereon a computer program which when run performs the projection LCD screen protection method described above.
The invention is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present invention, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present invention, fall within the scope of protection of the present invention.
Claims (5)
1. A projection LCD screen protection system, comprising:
the screen temperature acquisition module is used for acquiring the screen temperature of the LCD screen;
the screen display brightness acquisition module is used for acquiring screen display brightness of the LCD screen;
the environment temperature acquisition module is used for acquiring the working environment temperature of the LCD screen;
the cooling module is used for cooling the LCD screen;
The screen picture acquisition module is used for acquiring display picture pictures of the LCD screen;
the backlight module is used for emitting backlight to illuminate the LCD screen;
The control module is used for controlling the running states of the screen temperature acquisition module, the screen display brightness acquisition module, the environment temperature acquisition module, the cooling fan, the screen picture acquisition module and the backlight module and analyzing whether the display picture is completely black according to the display picture acquired by the screen picture acquisition module; the power control module is used for controlling the power of the cooling module to be in a corresponding size according to the ambient temperature acquired by the ambient temperature acquisition module; the power change of the cooling module and the backlight brightness change of the backlight module are controlled according to whether the display picture is completely black or not and the screen temperature acquired by the screen temperature acquisition module;
the control module controls the screen temperature acquisition module, the environment temperature acquisition module, the cooling module and the backlight module to be normally open;
When the screen temperature acquired by the screen temperature acquisition module is higher than the temperature threshold, the control module controls the cooling module to increase power and controls the backlight module to reduce backlight brightness until the screen temperature is lower than the temperature threshold;
The control module controls the screen display brightness acquisition module, the environment temperature acquisition module, the cooling module and the backlight module to be normally opened, and controls the screen picture acquisition module to be normally closed;
When the screen display brightness acquired by the screen display brightness acquisition module is lower than a brightness threshold value, the control module controls the screen picture acquisition module to acquire display picture pictures of the LCD screen, and analyzes whether the display picture is completely black according to the display picture pictures acquired by the screen picture acquisition module;
when the display picture is completely black, the control module controls the backlight module to be turned off; when the display picture is not completely black, the control module controls the backlight module to reduce the backlight brightness.
2. The projection LCD screen protection system according to claim 1, wherein: the control module analyzes the gray scale of the picture of each area according to the display picture acquired by the screen picture acquisition module to calculate the brightness of the picture, thereby judging whether the display picture is completely black.
3. The projection LCD screen protection system according to claim 2, wherein: the screen image acquisition module comprises a screen recording unit and a camera shooting unit.
4. The projection LCD screen protection system according to claim 1, wherein: the cooling module comprises a cooling fan.
5. The projection LCD screen protection system according to claim 1, wherein: the ambient temperature acquisition module includes an NTC sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311147070.5A CN117095653B (en) | 2023-09-06 | 2023-09-06 | Projection LCD screen protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311147070.5A CN117095653B (en) | 2023-09-06 | 2023-09-06 | Projection LCD screen protection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117095653A CN117095653A (en) | 2023-11-21 |
| CN117095653B true CN117095653B (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311147070.5A Active CN117095653B (en) | 2023-09-06 | 2023-09-06 | Projection LCD screen protection system |
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| CN (1) | CN117095653B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117496920B (en) * | 2023-12-27 | 2024-04-16 | 成都万创科技股份有限公司 | HDBASE-T multi-input-based highlight multimedia display equipment |
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| JP2007025054A (en) * | 2005-07-13 | 2007-02-01 | Sanyo Electric Co Ltd | Projection type image display device |
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| CN117095653A (en) | 2023-11-21 |
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