CN105118440A - LED (Light Emitting Diode) large screen display system with wide visual range - Google Patents
LED (Light Emitting Diode) large screen display system with wide visual range Download PDFInfo
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- CN105118440A CN105118440A CN201510630639.2A CN201510630639A CN105118440A CN 105118440 A CN105118440 A CN 105118440A CN 201510630639 A CN201510630639 A CN 201510630639A CN 105118440 A CN105118440 A CN 105118440A
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Abstract
The invention relates to an LED (Light Emitting Diode) large screen display system with a wide visual range, comprising a first central processing unit circuit, a second central processing unit circuit, a random access memory, a drive circuit and an LED array, wherein the first central processing unit circuit is suitable for communicating with an upper computer, and is responsible for controlling the initialization of a whole system and a display mode of cartoons; the second central processing unit circuit is suitable for controlling dynamic refresh of a display screen; the random access memory is suitable for storing information data to be displayed; the drive circuit is suitable for driving the LED array; the LED array comprises a predetermined number of LEDs installed on a circuit board, and axes of the LEDs and the direction vertical to the circuit board form predetermined angles. The LED large screen display system with a wide visual range provided by the invention adopts a working mode of dual-CPU (Central Processing Unit) synergy, thus the operating cost of the system is reduced, and a viewing effect at a short range is improved.
Description
Technical field
The present invention relates to technical field of information display, particularly a kind of LED large screen display system of wide visual range.
Background technology
Infosystem is by computer hardware, network and communication apparatus, computer software, information resources, the human-machine system for the purpose of processing information flow of information user and rules and regulations composition, its main task is the information management maximally utilising modern computer and network communications technology reinforcement enterprise, by the manpower had enterprise, material resources, financial resources, equipment, correct data are set up in investigating of the resources such as technology, processing processes and is compiled into various information material and is supplied to managerial personnel in time, to carry out correct decision-making, improve constantly management level and the economic benefit of enterprise.
In order to the various data (user data, system data, business datum etc.) of infosystem process are presented in face of people intuitively, require that display system can issue with multimedia form the information of sharing, and can with different patterns, according to zoning display situation, text, form and video image information.The control circuit of the LED large screen display system of current extensive application, mostly adopts the plate based on PC bus and coordinates the original hardware resource of PC to complete the display refreshing of screen-picture, display driver and data communication.This kind of design make use of the powerful software and hardware resources of PC, makes system development relatively easy.But because it can not add the operating cost of system by offline operation, and be usually arranged on overhead higher place due to LED giant-screen, beholder can not see image clearly when closely watching.
Summary of the invention
To be solved by this invention is high, that closely viewing effect the is bad problem of existing LED large screen display system operating cost.
For solving the problem, the invention provides a kind of LED large screen display system of wide visual range, comprising the first central processor circuit, the second central processor circuit, random access memory, driving circuit and LED array; Described first central processor circuit is suitable for communicating with host computer, and is responsible for the initialization and the animation display mode that control whole system; Described second central processor circuit is suitable for the dynamic refresh controlling display frame; Described random access memory is suitable for storing information data to be shown; Described driving circuit is suitable for driving described LED array; Described LED array comprise installation on circuit boards, the light emitting diode of predetermined quantity, the axis of described light emitting diode becomes predetermined angular with the direction perpendicular to circuit board.
Optionally, described random access memory is dual-port random access memory.
Optionally, described first central processor circuit is communicated with host computer by serial interface chip.
Optionally, described first central processor circuit is 8031 single chip circuits.
Optionally, described second central processor circuit is PIC16C57 single chip circuit.
Optionally, described predetermined angular is 4 degree to 6 degree.
Compared with prior art, the present invention has the following advantages:
The LED large screen display system of wide visual range provided by the invention, adopt the working method that dual processors is collaborative, be responsible for carrying out communicating with host computer by the first central processor circuit and control initialization and the animation display mode of whole system, be responsible for by the second central processor circuit the dynamic refresh controlling display frame, make display system can depart from PC independent operating to reduce the cost of system.Further, because the light emitting diode in LED array and the direction perpendicular to circuit board have certain angle, namely LED array is slightly downward-sloping, makes beholder also can see image clearly when closely watching.
Accompanying drawing explanation
Fig. 1 is the structural representation of the LED large screen display system of the wide visual range of the embodiment of the present invention;
Fig. 2 is the structural representation of the first central processor circuit of the embodiment of the present invention;
Fig. 3 is the structural representation of the random access memory of the embodiment of the present invention;
Fig. 4 is the structural representation of the LED array of the embodiment of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited thereto.
Fig. 1 is the structural representation of the LED large screen display system of the wide visual range of the embodiment of the present invention, and the LED large screen display system of described wide visual range comprises the first central processor circuit 11, second central processor circuit 12, random access memory 13, driving circuit 14 and LED array 15.
Particularly, described first central processor circuit 11 is connected with described second central processor circuit 12 and described random access memory 13, is suitable for communicating with host computer, and is responsible for the initialization and the animation display mode that control whole system.In the present embodiment, described first central processor circuit 11 is 8031 single chip circuits.Fig. 2 is the structural representation of described first central processor circuit 11; CPU adopts 8031 single-chip microcomputers; extending out a slice PSD311 as program storage and mouth line expansion 74LS245 is bus driver; its effect improves the driving force of bus and host CPU circuit and Bus isolation, protects host CPU when the miscellaneous part in bus breaks down.Described first central processor circuit 11 is communicated with host computer by serial interface chip, such as, can adopt the serial interface chip 202E serial communication five line connected modes of MAXM company.Host CPU circuit is the core of whole system, the long-time unavoidable impact not being subject to external interference that runs without interruption.Therefore, add watchdog circuit in the circuit of this embodiment, the antijamming capability of intensifier circuit, improve the reliability of host CPU circuit long-time running.
Described second central processor circuit 12 is connected with described random access memory 13 and described driving circuit 14, is suitable for the dynamic refresh controlling display frame.In the present embodiment, described second central processor circuit 12 is PIC16C57 single chip circuit.Information data to be shown is write described random access memory 13, PIC16C57 single chip circuit by current time screen image structure by address/data bus and is responsible for the information data in described random access memory 13 to be mapped on described LED array 15 by described the one the second central processor circuit 11.Those skilled in the art know the peripheral circuit of PIC16C57 single-chip microcomputer, do not repeat them here.
Described random access memory 13 is suitable for storing information data to be shown.In the present embodiment, described random access memory 13 is dual-port random access memory.Fig. 3 is the structural representation of described random access memory 13, and memory array is made up of the non-volatile RAM of 8 32K bytes, has the storage space of 256 bytes for showing the storage of data and display information.Display data are the core image of this screen displaying contents, and display information is the information such as display mode, translational speed, the residence time of this screen.Adopt non-volatile RAM to preserve display data, system PC can be made to run, even if having a power failure once in a while also can not cause loss of data.
Described driving circuit 14 is connected with described central processor circuit 12 and described LED array 15, is suitable for driving described LED array 15, and described LED array 15 is suitable for showing described information data under the driving of described driving circuit 14.Fig. 4 is the structural representation of described LED array 15, described LED array 15 comprise be arranged on circuit board 41, the light emitting diode 42 of predetermined quantity, the axis of described light emitting diode 42 becomes predetermined angle with the direction perpendicular to circuit board 41, and namely light emitting diode 42 has downward inclination angle.Described predetermined quantity is arranged according to the actual requirements, and described predetermined angle is 4 degree to 6 degree.Micro-downward-sloping by being set to by light emitting diode 42, add 60 degree of verticals angle of view that light emitting diode 42 self is subsidiary, beholder also can see image clearly when closely watching.
The above is only preferred embodiment of the present invention, and not do any pro forma restriction to the present invention, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present invention, all falls within protection scope of the present invention.
Claims (6)
1. a LED large screen display system for wide visual range, is characterized in that, comprises the first central processor circuit, the second central processor circuit, random access memory, driving circuit and LED array;
Described first central processor circuit is suitable for communicating with host computer, and is responsible for the initialization and the animation display mode that control whole system;
Described second central processor circuit is suitable for the dynamic refresh controlling display frame;
Described random access memory is suitable for storing information data to be shown;
Described driving circuit is suitable for driving described LED array;
Described LED array comprise installation on circuit boards, the light emitting diode of predetermined quantity, the axis of described light emitting diode becomes predetermined angular with the direction perpendicular to circuit board.
2. the LED large screen display system of wide visual range according to claim 1, is characterized in that, described random access memory is dual-port random access memory.
3. the LED large screen display system of wide visual range according to claim 1, is characterized in that, described first central processor circuit is communicated with host computer by serial interface chip.
4. the LED large screen display system of wide visual range according to claim 1, is characterized in that, described first central processor circuit is 8031 single chip circuits.
5. the LED large screen display system of wide visual range according to claim 1, is characterized in that, described second central processor circuit is PIC16C57 single chip circuit.
6. the LED large screen display system of wide visual range according to claim 1, is characterized in that, described predetermined angular is 4 degree to 6 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630639.2A CN105118440A (en) | 2015-09-29 | 2015-09-29 | LED (Light Emitting Diode) large screen display system with wide visual range |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510630639.2A CN105118440A (en) | 2015-09-29 | 2015-09-29 | LED (Light Emitting Diode) large screen display system with wide visual range |
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| CN201510630639.2A Pending CN105118440A (en) | 2015-09-29 | 2015-09-29 | LED (Light Emitting Diode) large screen display system with wide visual range |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888571Y (en) * | 2005-12-30 | 2007-04-11 | 刘振亮 | Novel cover for outdoor LED display screen |
| CN101594719A (en) * | 2009-05-08 | 2009-12-02 | 北京中庆微数字设备开发有限公司 | Offline control device |
| CN201994040U (en) * | 2011-03-29 | 2011-09-28 | 南京信息工程大学 | Lattice LED (light-emitting diode) display system |
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2015
- 2015-09-29 CN CN201510630639.2A patent/CN105118440A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888571Y (en) * | 2005-12-30 | 2007-04-11 | 刘振亮 | Novel cover for outdoor LED display screen |
| CN101594719A (en) * | 2009-05-08 | 2009-12-02 | 北京中庆微数字设备开发有限公司 | Offline control device |
| CN201994040U (en) * | 2011-03-29 | 2011-09-28 | 南京信息工程大学 | Lattice LED (light-emitting diode) display system |
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Application publication date: 20151202 |
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