CN110400540A - A kind of brightness control system for LED display - Google Patents
A kind of brightness control system for LED display Download PDFInfo
- Publication number
- CN110400540A CN110400540A CN201910613749.6A CN201910613749A CN110400540A CN 110400540 A CN110400540 A CN 110400540A CN 201910613749 A CN201910613749 A CN 201910613749A CN 110400540 A CN110400540 A CN 110400540A
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- Prior art keywords
- led display
- brightness
- screen intensity
- detection module
- screen
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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
- G09G3/22—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]
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Disclosed by the invention to belong to LED display brightness regulation technical field, specially a kind of brightness control system for LED display, including screen intensity controller and LED display, the screen intensity controller adjusts the brightness of LED display；The brightness control system for being used for LED display further includes memory module, host computer, ambient brightness detection module and screen intensity detection module；It establishes a connection between the coffret and memory module, host computer of the screen intensity controller, the host computer regulates and controls screen intensity controller control mode, pass through the adjustable effect of the brightness of LED display, it can be adjusted in different environments, so that the display effect of LED display is more preferable, and the eye injury of user can reduce；By being detected simultaneously to ambient light and to the light of LED display, by carrying out targetedly intelligent adjustment, so as to the brightness for being adjusted LED display voluntarily.
Description
Technical field
The present invention relates to LED display brightness regulation technical field, specially a kind of brightness regulation for LED display
System.
Background technique
LED display is a kind of flat-panel monitor, is made of LED module panel small one by one, for showing text, figure
The equipment of the various information such as picture, video, video signal.
LED is a kind of display mode by controlling semiconductor light-emitting-diode, by gallium (Ga) and arsenic (As), phosphorus (P), nitrogen
(N), diode made of the compound of indium (In) can give off visible light when electronics and hole-recombination, thus can be used to
Light emitting diode is made.Indicator light, or composition text or number display are used as in circuit and instrument.Gallium arsenide phosphide diode
It glows, gallium phosphide diode green light, silicon carbide diode Yellow light-emitting low temperature, indium gallium nitrogen diode blue light-emitting.
The luminescent color and luminous efficiency of LED is related with the material of production LED and technique, and lamp ball has just started to be blue light entirely
, behind add fluorescent powder, according to the different needs of user, adjust out it is different photochromic, it is widely used have red, green, blue,
Huang Si kind.Since LED operation voltage is low (only 1.2 ~ 4.0V), can actively shine and have certain brightness, brightness can use again voltage (or
Electric current) it adjusts, impact resistance, anti-vibration, service life are long (100,000 hours) again in itself, so there is no it in large-scale display equipment
His display mode is equal to LED display mode.
Under the conditions of different exterior lights is shone, the display effect of the LED display of same brightness is different, and is easy to eyes
It damages, it is therefore desirable to the brightness of LED display be adjusted in different situations, guarantee preferable display effect and right
The eyes of user reduce injury.
Summary of the invention
The purpose of the present invention is to provide a kind of brightness control systems for LED display, to solve above-mentioned background skill
Itd is proposed in art under the conditions of different exterior light is shone, the display effect of the LED display of same brightness is different, and is easy to eye
The problem of eyeball damages.
To achieve the above object, the invention provides the following technical scheme: a kind of brightness regulation system for LED display
System, including screen intensity controller and LED display, the screen intensity controller adjust the brightness of LED display；
The brightness control system for being used for LED display further includes memory module, host computer, ambient brightness detection module and screen
Brightness detection module；
It establishes a connection between the coffret and memory module, host computer of the screen intensity controller, the host computer
Screen intensity controller control mode is regulated and controled, the memory module be used for the control data of screen intensity controller with
And the detection data storage of ambient brightness detection module, screen intensity detection module；
The output interface of the screen intensity controller is connect with LED display input interface；
The output end of the ambient brightness detection module and screen intensity detection module passes through data line and screen intensity controls
The input terminal of device connects, and the ambient brightness detection module and screen intensity detection module are respectively to the building ring of LED display
The data that the brightness that the brightness in border and LED display itself shine is detected, and will test are transmitted to screen intensity controller,
Detection data determines the difference of LED display and ambient brightness to the screen intensity controller based on the received, aobvious to LED
Display screen is adjusted；
The screen intensity detection module includes multiple unit brightness detection modules, and the unit brightness detection module is distributed in
On LED display, the brightness of LED display is detected.
Preferably, it is by changing LED display that the screen intensity controller, which adjusts the mode of the brightness of LED display,
Operating current or periodically-varied light impulse length.
Preferably, the screen intensity controller and host computer are by way of wired connection or wireless connection.
Preferably, by way of wireless connection, described be wirelessly connected uses bluetooth for the screen intensity controller and host computer
The mode of connection, GPRS connection or zigbee connection.
Preferably, the unit brightness detection module is evenly distributed on LED display at matrix form.
Preferably, the host computer is computer, mobile phone or tablet computer.
Preferably, the screen intensity controller controls stepped control to the brightness of LED display.
Compared with prior art, the beneficial effects of the present invention are:
1) the adjustable effect of brightness for passing through LED display, can be adjusted, in different environments so that LED is shown
The display effect of screen is more preferable, and can reduce to the eye injury of user；
2) by being detected simultaneously to ambient light and to the light of LED display, by carrying out targetedly intelligent adjustment, make
Obtain its brightness that can be voluntarily adjusted LED display.
Detailed description of the invention
Fig. 1 is system principle diagram of the invention；
Fig. 2 is the system principle diagram of screen intensity detection module of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Embodiment:
The present invention provides a kind of technical solution referring to FIG. 1-2: a kind of brightness control system for LED display, including screen
Curtain brightness controller and LED display, the screen intensity controller adjust the brightness of LED display, the screen intensity control
Device processed adjusts the mode of the brightness of LED display as by the operating current or periodically-varied light arteries and veins that change LED display
Rush width；
Change the operating current of LED display: other than red LED generates saturated phenomenon, general LED pipe allows persistently to appoint
20 milliamperes or so electric currents of business, LED luminance and the electric current flowed through are almost proportional；
Periodically-varied light impulse length: it using the change frequency that can be experienced of eyes, is completed by pulse duration modulation method
Gray-scale Control, that is, duty ratio, i.e. periodically-varied light impulse length, it is only necessary to which it is sufficiently high to refresh the frequency, i.e., such anti-
The complex point bright period is shorter, and eyes just do not feel the shake of pixel.Because this method more appropriate digital controls,
Extensive utilization is arrived.Relatively common is exactly to adopt microcomputer to provide LED display mode；
The brightness control system for being used for LED display further includes memory module, host computer, ambient brightness detection module and screen
Brightness detection module, the working method of host computer setting screen brightness controller, so that screen intensity controller meets to environment
The data receiver and the output of LED display is controlled that brightness detection module and screen intensity detection module detect, and control bright
The information of degree is stored in memory module；
It establishes a connection between the coffret and memory module, host computer of the screen intensity controller, the host computer
Screen intensity controller control mode is regulated and controled, the memory module be used for the control data of screen intensity controller with
And the detection data storage of ambient brightness detection module, screen intensity detection module, host computer is in advance to screen intensity controller
The brightness control mode to LED display is inputted, screen intensity controller is in the case where specified to the brightness tune of LED display
Control, the screen intensity controller control stepped control to the brightness of LED display, and screen intensity controller is aobvious to LED
The brightness regulation of display screen meets 256 grades of adjustable ways；
The output interface of the screen intensity controller is connect with LED display input interface, and screen intensity controller is aobvious to LED
The output of display screen controls, and effect can be adjusted to the brightness of LED display, the brightness of LED display is applicable in
In the environment used；
The output end of the ambient brightness detection module and screen intensity detection module passes through data line and screen intensity controls
The input terminal of device connects, and the ambient brightness detection module and screen intensity detection module are respectively to the building ring of LED display
The data that the brightness that the brightness in border and LED display itself shine is detected, and will test are transmitted to screen intensity controller,
Detection data determines the difference of LED display and ambient brightness to the screen intensity controller based on the received, aobvious to LED
Display screen is adjusted, and ambient brightness detection module is mounted on the outer wall or rear side of LED display, and screen intensity detection module is mounted on
Detection effect can be carried out to the brightness of LED display on the position or front frame that LED display directly contacts, it is right
Foundation of the detected value of the brightness of environment as the brightness for adjusting LED display, the brightness of LED display and ambient brightness are in just
Relevant relationship is needed the brightness regulation to LED display higher, can guarantee to show in this way when the brightness value of environment the high
Effect, and protection can be played the role of to the eyes of user simultaneously；
The screen intensity detection module includes multiple unit brightness detection modules, and the unit brightness detection module is distributed in
On LED display, the brightness of LED display is detected, LED display is distributed in by first brightness detection module, so that member is bright
Degree detection module can detect LED display plurality of positions, to determine that the brightness of LED display is joined by comprehensive
Number.
The screen intensity controller and host computer are by way of wired connection or wireless connection, according to use demand
Targetedly selected.
The screen intensity controller and host computer by way of wireless connection, it is described be wirelessly connected using bluetooth connection,
The mode of GPRS connection or zigbee connection.
Such as by the way of zigbee connection: the Floor layer Technology of ZigBee be based on IEEE802.15.4, i.e., its physical layer and
MAC layer has directly used the definition of IEEE802.15.4.
Zigbee has used the communication protocol HomeRFLite for the home network-oriented studied before it.
Low-power consumption.Under low power consumption standby mode, 2 dry cells of section 5 can support 1 node to work 6~24 months, even
It is longer.This is the outstanding advantage of ZigBee.
Low cost.By significantly simplifying agreement (less than the 1/10 of bluetooth), the requirement to communication controler is reduced, by pre-
Analysis is surveyed, is calculated with 8,051 8 8-digit microcontrollers, Full Featured host node needs 32KB code, subfunction node as little as 4KB generation
Code, and ZigBee exempts from agreement patent fee.The price of every piece of chip is about 2 dollars.
Low rate.ZigBee works in the rate of 20~250kbps, provides 250kbps (2.4GHz), 40kbps respectively
The initial data throughput of (915MHz) and 20kbps (868MHz), meet the application demand of lower rate transmissions data.
Closely.Transmission range is typically in the range of between 10~100m, after increasing transmission power, also rise to 1~
3km.This refers to the distance between adjacent node.If transmission range can be more by the relay of routing and inter-node communication
Far.
Short time-delay.The response speed of ZigBee is very fast, and being generally transferred to working condition from sleep only needs 15ms, node connect into
Entering network only needs 30ms, further saves electric energy.It compares, bluetooth needs 3~10s, WiFi to need 3s.
The unit brightness detection module is evenly distributed on LED display at matrix form.
The host computer is computer, mobile phone or tablet computer.
Working principle: exporting screen intensity controller by host computer and control, so that screen intensity controller satisfaction pair
The brightness regulation of the LED display and data that can be acquired to ambient brightness detection module and screen intensity detection module connect
It receives and analysis is handled；
Screen intensity detection module carries out real-time monitoring, ring of the ambient brightness detection module to surrounding to the brightness of LED display
Border brightness is detected, by the adjustment effect of screen intensity controller, so that: ambient brightness raising then regulates and controls LED display
Brightness increase；Ambient brightness reduces the brightness reduction for then regulating and controlling LED display.
Screen intensity detection module carries out the effect of feedback detection to LED display simultaneously, when screen intensity controller pair
After the brightness regulation of LED display, screen intensity detection module detects the brightness of LED display, if not adjusting or not having
Have and achieve the effect that adjusting, then data information is fed back into screen intensity controller, adjusted again, until it is bright to meet environment
Degree and LED display brightness positive correlation.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms；Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
Interior, any reference signs in the claims should not be construed as limiting the involved claims.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of brightness control system for LED display, including screen intensity controller and LED display, feature exist
In: the screen intensity controller adjusts the brightness of LED display；
The brightness control system for being used for LED display further includes memory module, host computer, ambient brightness detection module and screen
Brightness detection module；
It establishes a connection between the coffret and memory module, host computer of the screen intensity controller, the host computer
Screen intensity controller control mode is regulated and controled, the memory module be used for the control data of screen intensity controller with
And the detection data storage of ambient brightness detection module, screen intensity detection module；
The output interface of the screen intensity controller is connect with LED display input interface；
The output end of the ambient brightness detection module and screen intensity detection module passes through data line and screen intensity controls
The input terminal of device connects, and the ambient brightness detection module and screen intensity detection module are respectively to the building ring of LED display
The data that the brightness that the brightness in border and LED display itself shine is detected, and will test are transmitted to screen intensity controller,
Detection data determines the difference of LED display and ambient brightness to the screen intensity controller based on the received, aobvious to LED
Display screen is adjusted；
The screen intensity detection module includes multiple unit brightness detection modules, and the unit brightness detection module is distributed in
On LED display, the brightness of LED display is detected.
2. a kind of brightness control system for LED display according to claim 1, it is characterised in that: the screen
The mode that brightness controller adjusts the brightness of LED display is to be changed by the operating current or periodicity of change LED display
Darkening pulse width.
3. a kind of brightness control system for LED display according to claim 1, it is characterised in that: the screen
Brightness controller and host computer are by way of wired connection or wireless connection.
4. a kind of brightness control system for LED display according to claim 3, it is characterised in that: the screen
Brightness controller and host computer by way of wireless connection, it is described be wirelessly connected using bluetooth connection, GPRS connection or
The mode of zigbee connection.
5. a kind of brightness control system for LED display according to claim 1, it is characterised in that: the unit
Brightness detection module is evenly distributed on LED display at matrix form.
6. a kind of brightness control system for LED display according to claim 1, it is characterised in that: described upper
Machine is computer, mobile phone or tablet computer.
7. a kind of brightness control system for LED display according to claim 1, it is characterised in that: the screen
Brightness controller controls stepped control to the brightness of LED display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910613749.6A CN110400540A (en) | 2019-07-09 | 2019-07-09 | A kind of brightness control system for LED display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910613749.6A CN110400540A (en) | 2019-07-09 | 2019-07-09 | A kind of brightness control system for LED display |
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| CN110400540A true CN110400540A (en) | 2019-11-01 |
Family
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| CN201910613749.6A Pending CN110400540A (en) | 2019-07-09 | 2019-07-09 | A kind of brightness control system for LED display |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111445869A (en) * | 2020-04-30 | 2020-07-24 | 京东方科技集团股份有限公司 | Brightness control device, control method thereof and display panel |
| CN112201197A (en) * | 2020-10-10 | 2021-01-08 | 天长市辉盛电子有限公司 | System for adjusting display brightness of LED display screen |
| CN114023284A (en) * | 2021-11-02 | 2022-02-08 | 深圳市华瑞安科技有限公司 | Education tablet personal computer system with eye protection display function |
| CN114141194A (en) * | 2021-12-03 | 2022-03-04 | 浙江欧菲克斯交通科技有限公司 | Self-adaptive brightness adjustment method and system for outdoor LED display screen |
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Application publication date: 20191101 |
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