CN104008729A - LED display screen based on AVR single-chip microcomputer - Google Patents
LED display screen based on AVR single-chip microcomputer Download PDFInfo
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- CN104008729A CN104008729A CN201410281341.0A CN201410281341A CN104008729A CN 104008729 A CN104008729 A CN 104008729A CN 201410281341 A CN201410281341 A CN 201410281341A CN 104008729 A CN104008729 A CN 104008729A
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Abstract
An LED display screen based on an AVR single-chip microcomputer comprises a PC upper computer, a main control unit and a display submodule set. The main control unit is respectively connected with the PC upper computer and the display submodule set, and the display submodule set is formed by connecting a plurality of display submodules in parallel. The PC upper computer is used for converting images and characters into display codes of the display screen and sending display information to the main control unit, the main control unit is used for completing rolling and cutting processing on display data and sending the display data to all display submodules through asynchronous serial ports, and AT-mega8 in the display submodules is used for completing scanning dynamic display. According to the LED display screen, the FLASH ROM and the RAM of the AVR single-chip microcomputer are used, any storage circuit is not needed externally, the circuit structure is simple, the 16-order gray level display of the images is achieved, and the LED display screen can be widely applied to public occasions such as markets and bus stations.
Description
Technical field
The present invention relates to a kind of LED display, particularly a kind of LED display based on AVR single-chip microcomputer.
Background technology
LED lattice block has the advantages such as brightness is high, luminous evenly, good reliability, assembled convenience, can form the display screen of various sizes.At present, LED display has been widely used in word and has shown and obtained good effect, but the Word message that major part only can display scrolling and can not show image, and there is the shortcomings such as system complex.
AVR single-chip microcomputer is RISC (Reduced Instruction Set CPU) the reduced instruction set computer 8-bit High-Speed Microcontroller of enhancement mode built-in FLASH, hardware using Harvard (Harward) structure, reaching a clock period can carry out an instruction, and most instructions are all one-cycle instruction.Be supported in System Programming ISP, wherein MEGA series is also supported in application programming IAP, and built-in FLASH program storage is erasable more than 1000 times, bring convenience to user's Development and Production and maintenance, the E2PROM of erasable 100,000 times, for the preservation of data after power down brings convenience, AVR single-chip microcomputer has resource in abundant sheet, as RTC, and WATCHDOG, AD converter, PWM, USART, SPI, TWI interface etc., I/O mouth function is strong, driving force is strong.
Summary of the invention
For the problems referred to above, the present invention aims to provide the LED display based on AVR single-chip microcomputer that a kind of roll word and image get both.
For realizing this technical purpose, the solution of the present invention is: a kind of LED display based on AVR single-chip microcomputer, comprise PC host computer, main control unit and display sub-module group, described main control unit is by AT-mega32 single-chip microcomputer and RS232 interface circuit, RS485 interface circuit forms, described AT-mega32 single-chip microcomputer connects PC host computer by RS232 interface circuit, also by RS485 interface circuit, connect display sub-module group, described display sub-module group is composed in parallel by a plurality of display sub-modules, described display sub-module comprises an AT-mega8 single-chip microcomputer, a code translator 74HC154, two 8 bit data latch 74LS373 and a LED dot matrix screen, the signal that described AT-mega8 single-chip microcomputer receives is by code translator 74HC154 decoding, and for driving 16 middle pliotrons 8550 as row choosing, described AT-mega8 single-chip microcomputer also connects LED dot matrix screen by data latches 74LS373, described data latches 74LS373 latchs as row data.
Preferably, described LED dot matrix screen is 1 16 * 16 display screen being combined into by 48 * 8 monochromatic lattice blocks.
Compared with prior art, the invention has the beneficial effects as follows: this LED display, utilize FLASH ROM and the RAM function of AVR single-chip microcomputer self, outside without any memory circuit, can show easily the Word message of various fonts and the image of 16 rank gray scales, picture is clear, stable performance, easy and simple to handle, can be widely used in the public arenas such as market, station, has good using value.
Accompanying drawing explanation
Fig. 1 is system schematic of the present invention.
Fig. 2 is submodule display driver circuit figure of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-2, the solution of the present invention is: a kind of LED display based on AVR single-chip microcomputer, comprise PC host computer 1, main control unit 2 and display sub-module group 3, described main control unit 2 is by AT-mega32 single-chip microcomputer and RS232 interface circuit, RS485 interface circuit forms, described AT-mega32 single-chip microcomputer connects PC host computer 1 by RS232 interface circuit, also by RS485 interface circuit, connect display sub-module group 3, described display sub-module group 3 is composed in parallel by a plurality of display sub-modules, described display sub-module comprises an AT-mega8 single-chip microcomputer 4, a code translator 74HC154, two 8 bit data latch 74LS373 and a LED dot matrix screen 5, the signal that described AT-mega8 single-chip microcomputer 4 receives is by code translator 74HC154 decoding, and for driving 16 middle pliotrons 8550 as row choosing, described AT-mega8 single-chip microcomputer 4 also connects LED dot matrix screen 5 by data latches 74LS373, described data latches 74LS373 latchs as row data, described LED dot matrix screen 5 is 1 16 * 16 display screen being combined into by 48 * 8 monochromatic lattice blocks.
Principle of work of the present invention: the show code that PC host computer 1 is display screen by image and text conversion, and demonstration information is sent on main control unit 2, main control unit 2 completes showing rolling and the dividing processing of data, then by asynchronous serial port, send in display sub-module group 3, in each display sub-module, there is a slice AT-Mega8 single-chip microcomputer 4 to complete scanning, dynamically be presented on LED dot matrix screen 5, the data communication of main control unit 2 and display sub-module group 3 adopts the asynchronous serial port form of standard.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form, therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, therefore be intended to the implication that is equal to important document and all changes in scope that drop on claim to include in the present invention, the any Reference numeral in claim should be considered as limiting related claim.
The above; it is only preferred embodiment of the present invention; not in order to limit the present invention, any trickle modification that every foundation technical spirit of the present invention is done above embodiment, be equal to and replace and improve, within all should being included in the protection domain of technical solution of the present invention.
Claims (2)
1. the LED display based on AVR single-chip microcomputer, comprise PC host computer (1), main control unit (2) and display sub-module group (3), it is characterized in that: described main control unit (2) is by AT-mega32 single-chip microcomputer and RS232 interface circuit, RS485 interface circuit forms, described AT-mega32 single-chip microcomputer connects PC host computer (1) by RS232 interface circuit, also by RS485 interface circuit, connect display sub-module group (3), described display sub-module group (3) is composed in parallel by a plurality of display sub-modules, described display sub-module comprises an AT-mega8 single-chip microcomputer (4), a code translator 74HC154, two 8 bit data latch 74LS373 and a LED dot matrix screen (5), the signal that described AT-mega8 single-chip microcomputer (4) receives is by code translator 74HC154 decoding, and for driving 16 middle pliotrons 8550 as row choosing, described AT-mega8 single-chip microcomputer (4) also connects LED dot matrix screen (5) by data latches 74LS373, described data latches 74LS373 latchs as row data.
2. the LED display based on AVR single-chip microcomputer according to claim 1, is characterized in that: described LED dot matrix screen (5) is 1 16 * 16 display screen being combined into by 48 * 8 monochromatic lattice blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410281341.0A CN104008729A (en) | 2014-06-23 | 2014-06-23 | LED display screen based on AVR single-chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410281341.0A CN104008729A (en) | 2014-06-23 | 2014-06-23 | LED display screen based on AVR single-chip microcomputer |
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| CN104008729A true CN104008729A (en) | 2014-08-27 |
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| CN201410281341.0A Pending CN104008729A (en) | 2014-06-23 | 2014-06-23 | LED display screen based on AVR single-chip microcomputer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464669A (en) * | 2014-12-10 | 2015-03-25 | 青岛歌尔声学科技有限公司 | LCD driving circuit, LCD and LCD driving method |
| CN105259823A (en) * | 2015-08-27 | 2016-01-20 | 欧科佳（上海）汽车电子设备有限公司 | Touch button with display screen |
| CN105489160A (en) * | 2016-01-12 | 2016-04-13 | 深圳市奥拓电子股份有限公司 | Data transmission device, data transmission method and system of LED display screen |
| CN106910158A (en) * | 2016-11-14 | 2017-06-30 | 上海仪电鑫森科技发展有限公司 | Self adaptation vector display system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201374175Y (en) * | 2009-03-27 | 2009-12-30 | 深圳市德泽能源科技有限公司 | Control circuit of dot-matrix display |
| CN203931455U (en) * | 2014-06-23 | 2014-11-05 | 苏州塔可盛电子科技有限公司 | A kind of LED display based on AVR single-chip microcomputer |
-
2014
- 2014-06-23 CN CN201410281341.0A patent/CN104008729A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201374175Y (en) * | 2009-03-27 | 2009-12-30 | 深圳市德泽能源科技有限公司 | Control circuit of dot-matrix display |
| CN203931455U (en) * | 2014-06-23 | 2014-11-05 | 苏州塔可盛电子科技有限公司 | A kind of LED display based on AVR single-chip microcomputer |
Non-Patent Citations (2)
| Title |
|---|
| 冯松: "基于AVR单片机LED显示屏系统的设计与实现", 《信息安全与技术》 * |
| 廖继海等: "基于AVR单片机的LED显示屏的灰度设计与实现", 《现代电子技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464669A (en) * | 2014-12-10 | 2015-03-25 | 青岛歌尔声学科技有限公司 | LCD driving circuit, LCD and LCD driving method |
| CN105259823A (en) * | 2015-08-27 | 2016-01-20 | 欧科佳（上海）汽车电子设备有限公司 | Touch button with display screen |
| CN105489160A (en) * | 2016-01-12 | 2016-04-13 | 深圳市奥拓电子股份有限公司 | Data transmission device, data transmission method and system of LED display screen |
| CN105489160B (en) * | 2016-01-12 | 2018-07-17 | 深圳市奥拓电子股份有限公司 | A kind of data transmission device of LED display, data transmission method and system |
| CN106910158A (en) * | 2016-11-14 | 2017-06-30 | 上海仪电鑫森科技发展有限公司 | Self adaptation vector display system |
| CN106910158B (en) * | 2016-11-14 | 2020-12-01 | 上海仪电鑫森科技发展有限公司 | Adaptive vector display system |
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Application publication date: 20140827 |