CN105845074A - Control system of environment-friendly LED (light emitting diode) panel - Google Patents
Control system of environment-friendly LED (light emitting diode) panel Download PDFInfo
- Publication number
- CN105845074A CN105845074A CN201610365759.9A CN201610365759A CN105845074A CN 105845074 A CN105845074 A CN 105845074A CN 201610365759 A CN201610365759 A CN 201610365759A CN 105845074 A CN105845074 A CN 105845074A
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- environmental protection
- driving chip
- environment
- led
- led display
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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]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Led Device Packages (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a control system of an environment-friendly LED (light emitting diode) panel which comprises an LED panel and a controller. The LED panel comprises a display unit, a control unit and a power supply unit, wherein the display unit comprises a box body and a module, the control unit comprises a receiving card which is arranged in the box body and connected with the module, and the power supply unit comprises an AC/DC power supply arranged in the box body and a power supply cascade wire. The controller comprises a sending card and a control interface. The outer surface of the box body is provided with an environment-friendly coating, wherein the environment-friendly coating contains a fire-proof material which is used for avoiding a fire breaking out in the box body from spreading outside. The front of the module is provided with an environment-friendly mask, wherein the environment-friendly mask is used for preventing electromagnetic radiation from spreading outside. A signal transmission line between the control interface and the sending card and a signal transmission line between the sending card and the receiving card are provided with an environment-friendly shielding layer which is used for avoiding conduction radiation of the signal lines.
Description
Technical field
The invention belongs to LED display application, be specifically related to the control system of a kind of environmental protection LED display.
Background technology
During the high speed development of current Modern Information based Society, large screen display is permeated to consumer multimedia application from business application such as public information displays.Along with the development of broadband network, digitized content of multimedia will occupy main flow in information world, and novel large-screen display equipment enjoys the center of information and content of multimedia by replacing conventional television to become people.
LED display (LED panel): LED is exactly light
Emitting diode, the english abbreviation of light emitting diode, is called for short LED.It is a kind of display mode by controlling semiconductor light-emitting-diode, and its general appearance is exactly to be typically red light emitting diode by a lot of to form, and the light on and off by lamp show character.It is used for showing the display screen of the various information such as word, figure, image, animation, market, video, video signal.Shenzhen is LED display development & production origin.The manufacturer up to ten thousand of Shenzhen LED display at present, wherein auspicious by Ai Bisen, light, in the leading eldest child such as auspicious, follow-up unexpected rival's attitude such as also have Shenzhen lamp the brightest, extra large, continent bright is shortlisted for top ten, and famous brand company price general charged is higher, and mainly management cost is higher than general enterprises.LED display price is the most transparent at present.
LED
Display screen classification is varied, substantially classifies according to following several ways:
(1) by using environment to be divided into indoor, outdoor and semi-outdoor
Indoor panel long-pending typically from less than 1 square meter to tens square meters, dot density is higher, uses at non-direct sunlight or lighting environment, and viewing distance is beyond several meters, and screen body does not possess sealing waterproof ability.
Outdoor-screen area typically from several square meters to dozens or even hundreds of square meter, dot density is diluter (mostly is the 1000-4000 every square meter of point
), luminosity, 3000-6000cd/ square meter (towards difference, brightness requirement is different), can use under the conditions of direct sunlight, and viewing distance is beyond tens meters, and screen body has the anti-rain of good Radix Saposhnikoviae and lightning protection capability.
Semi-outdoor screen, between outdoor and indoor have higher luminosity between the two, can use under non-direct sunlight open air, and screen body has certain sealing, typically under eaves or in show window.
Electromagnetic radiation is also known as electronic smoke, space electric flux and the magnetic energy jointly transferred are formed, and this energy is by electric charge
Move and produced.Illustrate, launching the dislocation charge that the radio-frequency antenna of signal is sent, electromagnetic energy will be produced.Electromagnetism " frequency spectrum " includes panoramic electromagnetic radiation, from the electromagnetic radiation of the electromagnetic radiation of extremely low frequency to extremely high frequency.Also have radio wave, microwave, infrared ray, visible ray and ultraviolet light etc. between the two.In electromagnetic spectrum, the general definition of radio frequency part, refers to that frequency is about by 3 kilo hertzs of radiation to 300 gigahertz (GHZ)s.Human body is had a certain impact by some electromagnetic radiation.
The electronic equipment that LED display is applied as a kind of big electric current, it will necessarily produce big radiation, the electronic equipment of surrounding is caused signal disturbing, and therefore, in LED producer, solving electromagnetic radiation is also problem demanding prompt solution.In the work process of LED display whole system, can produce various types of radiation, wherein, the conduct radiation of transmission line is also the part can not ignore, accordingly, it would be desirable to emphasis solves this kind of conduct radiation.
Summary of the invention
The technical problem to be solved is: provides the control system of a kind of environmental protection LED display, solves the problem producing a large amount of conduct radiation in prior art in LED display signals transmission.
The present invention solves above-mentioned technical problem by the following technical solutions:
A kind of control system of environmental protection LED display, including LED display, controller, described LED display includes display unit, control unit, power supply unit, described display unit includes casing, module, multiple module is set on described casing, each module includes pcb board, LED, driving chip, wherein, LED is arranged at the front of pcb board, driving chip is arranged at the back side of pcb board, the receiving card that control unit is connected with module in including being arranged at casing, power supply unit includes AC/DC power supply and the power stage on line being arranged in casing；Described controller includes sending card, controls interface, and wherein, sending card sends to receiving card after the information controlling interface setting being processed；The outer surface of described casing arranges environment-friendly coating, and environment-friendly coating contains fire proofing material, on fire in being used for avoiding casing spreads to outside；The front of described module arranges environmental protection face shield, and this environmental protection face shield is used for preventing electromagnetic radiation to external communication；Described control interface and sending card signal transmssion line directly, between sending card and receiving card are respectively provided with environmental protection screen layer, for avoiding the conduct radiation of holding wire.
Electric source filter circuit and signal filter circuit is also set up on described module, wherein, electric source filter circuit includes inductance and electric capacity, signal filter circuit includes magnetic bead, the input of each control signal of driving chip is all connected a magnetic bead, and each data input pin of driving chip is respectively connected with data output end a magnetic bead.
Described environment-friendly coating is arranged on the outer surface of casing by the way of plating or spraying.
Described environmental protection face masks embeds metal gauze, for isolating the radiation of certain frequency.
Described driving chip includes three kinds, respectively red LED lamp driving chip, green LED lamp driving chip, blue led lamp driving chip, and described red, green, blue color LED driving chip is sequentially connected in series.
The central processing unit of sending card and receiving card all uses fpga chip.
Described driving chip is MBI5024 or MBI5167 that scientific & technical corporation is built up in Taiwan.
Compared with prior art, the method have the advantages that
1, environment-friendly coating is used outside casing, module front uses environmental protection face shield, the electromagnetic radiation produced when can be effectively isolated LED display work outwards dissipates, avoid the interference to ambient electronics, simultaneously worked as fireproofing function, it is to avoid dangerous spreads, improve the safety of this LED display, environmental protection screen layer is set outside transmission line, it is possible to the conduct radiation of effective anti-stop signal, improves the integrity of signal transmission.
2, use the filtering mode of this programme, it is possible to effectively filter out the interference of each frequency range, use magnetic bead to be connected in series to signal input output end, it is possible to effectively filter out crosstalk, it is ensured that the integrity of signal.
3, MBI5024 chip is that the scientific and technological a performance height being specifically designed for LED display control release, the chip of low cost are built up in Taiwan, and the LED display for the type controls to be capable of its display demand, reduces the cost of whole screen simultaneously.
Detailed description of the invention
Structure and work process to the present invention are described further below.
A kind of control system of environmental protection LED display, including LED display, controller, described LED display includes display unit, control unit, power supply unit, described display unit includes casing, module, multiple module is set on described casing, each module includes pcb board, LED, driving chip, wherein, LED is arranged at the front of pcb board, driving chip is arranged at the back side of pcb board, the receiving card that control unit is connected with module in including being arranged at casing, power supply unit includes AC/DC power supply and the power stage on line being arranged in casing；Described controller includes sending card, controls interface, and wherein, sending card sends to receiving card after the information controlling interface setting being processed；The outer surface of described casing arranges environment-friendly coating, and environment-friendly coating contains fire proofing material, on fire in being used for avoiding casing spreads to outside；The front of described module arranges environmental protection face shield, and this environmental protection face shield is used for preventing electromagnetic radiation to external communication；Described control interface and sending card signal transmssion line directly, between sending card and receiving card are respectively provided with environmental protection screen layer, for avoiding the conduct radiation of holding wire.
Electric source filter circuit and signal filter circuit is also set up on described module, wherein, electric source filter circuit includes inductance and electric capacity, signal filter circuit includes magnetic bead, the input of each control signal of driving chip is all connected a magnetic bead, and each data input pin of driving chip is respectively connected with data output end a magnetic bead.
Described environment-friendly coating is arranged on the outer surface of casing by the way of plating or spraying.
Described environmental protection face masks embeds metal gauze, for isolating the radiation of certain frequency.
Described driving chip includes three kinds, respectively red LED lamp driving chip, green LED lamp driving chip, blue led lamp driving chip, and described red, green, blue color LED driving chip is sequentially connected in series.
The central processing unit of sending card and receiving card all uses fpga chip.
Described driving chip is MBI5024 or MBI5167 that scientific & technical corporation is built up in Taiwan.
MBI5024 chip has a characteristic that
MBI5024 is to utilize up-to-date PrecisionDrive technology, aims at the driving IC of LED display floater design, its built-in CMOS bit shift register and bolt-lock function, the input data of serial can be converted into parallel output data formats.
The input voltage range value of MBI5024 is 3.3 volts to 5 volts, it is provided that 16 current sources, 3-45 mA can be provided to determine the magnitude of current to drive LED in each output stage；And the current difference of output channel is less than ± 3% in single IC；Output current difference between many IC is less than ± 6%；Electric current changes along with outfan withstanding voltage (VDS), is controlled in every volt 0.1%；And electric current is also controlled at 1% by service voltage (VDD), the change of ambient temperature.User can adjust the size of current of each output stage of MBI5024 via the RSET selecting different resistance, and thereby mechanism, user can accurately control the luminosity of LED.
The design of MBI5024 ensures that its output stage can be pressure 17 volts, therefore can concatenate multiple LED at each outfan.
Additionally, MBI5024 also provides the high clock frequency of 25MHz to meet system to the demand in mass data transmission.
Control element on LED display uses MBI5024 control chip, MBI5024 chip is that the scientific and technological a performance height being specifically designed for LED display control release is built up in Taiwan, the chip of low cost, LED display for the type controls to be capable of its display demand, reduces the cost of whole screen simultaneously.
The pin of MBI5024 is described as follows table:
This chip main lift display screen uniformity of MBI5024, and tolerate that bigger LED luminance difference, to reduce manufacturing cost, simultaneously because current accuracy improves, can tolerate bigger LED luminance error, contribute to manufacturer and reduce LED purchase cost.
Claims (7)
1. the control system of an environmental protection LED display, including LED display, controller, described LED display includes display unit, control unit, power supply unit, described display unit includes casing, module, multiple module is set on described casing, each module includes pcb board, LED, driving chip, wherein, LED is arranged at the front of pcb board, driving chip is arranged at the back side of pcb board, the receiving card that control unit is connected with module in including being arranged at casing, power supply unit includes AC/DC power supply and the power stage on line being arranged in casing；Described controller includes sending card, controls interface, and wherein, sending card sends to receiving card after the information controlling interface setting being processed；It is characterized in that: the outer surface of described casing arranges environment-friendly coating, environment-friendly coating contains fire proofing material, on fire in being used for avoiding casing spreads to outside；The front of described module arranges environmental protection face shield, and this environmental protection face shield is used for preventing electromagnetic radiation to external communication；Described control interface and sending card signal transmssion line directly, between sending card and receiving card are respectively provided with environmental protection screen layer, for avoiding the conduct radiation of holding wire.
The control system of environmental protection LED display the most according to claim 1, it is characterized in that: on described module, also set up electric source filter circuit and signal filter circuit, wherein, electric source filter circuit includes inductance and electric capacity, signal filter circuit includes magnetic bead, the input of each control signal of driving chip is all connected a magnetic bead, and each data input pin of driving chip is respectively connected with data output end a magnetic bead.
The control system of environmental protection LED display the most according to claim 1, it is characterised in that: described environment-friendly coating is arranged on the outer surface of casing by the way of plating or spraying.
The control system of environmental protection LED display the most according to claim 1, it is characterised in that: described environmental protection face masks embeds metal gauze, for isolating the radiation of certain frequency.
The control system of environmental protection LED display the most according to claim 1, it is characterized in that: described driving chip includes three kinds, being respectively red LED lamp driving chip, green LED lamp driving chip, blue led lamp driving chip, described red, green, blue color LED driving chip is sequentially connected in series.
The control system of environmental protection LED display the most according to claim 1, it is characterised in that: the central processing unit of sending card and receiving card all uses fpga chip.
The control system of environmental protection LED display the most according to any one of claim 1 to 6, it is characterised in that: described driving chip is MBI5024 or MBI5167 that scientific & technical corporation is built up in Taiwan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365759.9A CN105845074A (en) | 2016-05-30 | 2016-05-30 | Control system of environment-friendly LED (light emitting diode) panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365759.9A CN105845074A (en) | 2016-05-30 | 2016-05-30 | Control system of environment-friendly LED (light emitting diode) panel |
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| Publication Number | Publication Date |
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| CN105845074A true CN105845074A (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610365759.9A Pending CN105845074A (en) | 2016-05-30 | 2016-05-30 | Control system of environment-friendly LED (light emitting diode) panel |
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2016
- 2016-05-30 CN CN201610365759.9A patent/CN105845074A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008036551A2 (en) * | 2006-09-19 | 2008-03-27 | Tvia, Inc. | Display uniformity correction |
| CN201887983U (en) * | 2010-11-19 | 2011-06-29 | 上海卓一电子有限公司 | Energy-saving LED colored light driving power source |
| CN102419701A (en) * | 2011-09-29 | 2012-04-18 | 钟再柏 | Light-emitting diode (LED) screen control system |
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Application publication date: 20160810 |
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