CN105741723A - LED nixie tube display system based on single-chip microcomputer - Google Patents
LED nixie tube display system based on single-chip microcomputer Download PDFInfo
- Publication number
- CN105741723A CN105741723A CN201410747919.7A CN201410747919A CN105741723A CN 105741723 A CN105741723 A CN 105741723A CN 201410747919 A CN201410747919 A CN 201410747919A CN 105741723 A CN105741723 A CN 105741723A
- Authority
- CN
- China
- Prior art keywords
- chip
- led
- data
- input
- numeral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The invention aims at overcoming various types of interference in a conventional LED drive circuit, and provides a stable and efficient LED nixie tube display system. The system enables the main chips, which comprise an 8031 single-chip microcomputer, an MAX7219 chip, a MAX232 chip and a MAX813L chip, to be connected and jointed. The 8031 single-chip microcomputer is the core chip, and achieves the control of the whole system. The MAX7219 chip is a highly-integrated serial input/output common-cathode display driver, and can achieve an interface for a microprocessor and an 8-bit 7-field digital LED or a 64-bit single LED. The MAX813L chip serves as an anti-interference chip.
Description
Technical field
The present invention relates to a kind of digital display system, particularly to a kind of embedded system adopting Micro Controller Unit (MCU) driving LED numeral method.
Background technology
Along with the development of society, the progress of science and technology, improving constantly of living standards of the people, show and in the window ad display system of post and telecommunications and other industry at Industry Control, instrument and meter, figure, be required for a kind of LED display driver circuit.LED is not strange for us in fact, this display we also can be frequently seen, such as the electronics score display board in electronic bill-board in the street, gymnasium, the digital display screen in instrument and meter etc..Just because of this, LED display driver circuit and the program thereof of a simple high efficient and reliable are designed, it will have purposes very widely.
From current LED display driver circuit, it is common to adopt a kind of timing or interruption this mode of control mode to occupy CPU portion of time.But the industrial control system that real-time is very strong, the method just seems less suitable.When controlling feeder number and being a lot, contradiction is especially prominent.Also have and be exactly, although single-chip microcomputer is in the history of China's popularization and application existing decades, and the kind recently as single-chip microcomputer is on the increase, and technical merit is also improving constantly, and it is more widely applied.Just because of the needs of the expansion of its range of application and the problem of solution, it has to some data is carried out more complicated process, for instance: data require to carry out the process of series of complex before LED shows.But owing to the calculation function of single-chip microcomputer is poor, when system requirements quickly processes the data of complexity, single-chip microcomputer to go to deal with this situation and arise that very big difficulty.Meanwhile of many uses due to LED display driver circuit, uses in various working site of being everlasting, and is usually present various interference source in working site and (often interferes with that can be divided into 2 kinds: one be the interference caused by voltage source；Two is the interference caused by reason beyond power supply, mainly the interference of transmission channel), thus can run to system and bring a lot of problem, make LED drive circuit cannot normal operation, like that have and can cause very serious consequence.
Summary of the invention
It is an object of the invention to overcome the various interference in tradition LED drive circuit, it is provided that the LED numeral method system of a kind of stability and high efficiency.
The object of the present invention is achieved like this:
The main chip of the hardware system of the present invention includes 8031 single-chip microcomputers, MAX7219 chip, MAX232 chip, MAX813L chip.8031 single-chip microcomputers are the chip of a core in the present system, play the effect controlling whole LED display driving system.MAX7219 is a kind of highly integrated serial input/output common cathode display driver, it may be achieved the interface of microprocessor and 87 piece of digital LED or 64 single LED.Adopt MAX813L chip as anti-interference chip.
The work process of the present invention is: from PC input one with letter data (as: A123.4567), it is processed into serial 16 system numbers through PC, and it is transferred on 8031 single-chip microcomputers by MAX232,8031 single-chip microcomputers carry out simple process data again after receiving data and are just transferred to LED(by MAX7219 chip and include 8 × 8 dot matrix and 77 segment numeral pipes) on, thus reaching the 8031 Single-chip Controlling LED display that will carry out, on LED, finally also show that A123.4567.Meanwhile, the scaling position of input and output data must be except letter, from the number of the left side between the 3rd numeral and the 4th numeral.
Input function described on PC in the design is including two parts: (1) by keyboard being wanted the data of display on LED to be input in PC.(2) data entering into PC process, and allow it become the code of a series of 16 systems, and leave in an array, for ensuing ready with 8031 single chip communications.
The communication protocol of the use in the present invention is as follows:
(1) serial communication baud rate is 4800bps
(2) frame format is 8 bit walks, and high 4 is bit code, and low 4 is the content communicated
(3) setting the address code of single-chip microcomputer as F1H, first contact address code, correctly then transmits data such as address code before data is transmitted, otherwise continues contact address code.
(4) no parity position, whether correctly the method that the communication of data adopts cumulative sum effect, namely often transmit one group of data (number is made by oneself), effect one-accumulate and, correctly then loopback 00H, otherwise loopback FFH.
(5) contact information is that 8031 single-chip microcomputers actively got in touch with by PC
(6) PC adopts COM2 communication
Advantages of the present invention:
(1) present invention MAX232 chip realizes PC and the serial communication of 8031 single-chip microcomputers, is the data process in order to carry out complexity better by PC, to improve the weak point of single-chip microcomputer poor arithmetic ability.
(2) MAX7219 chip is as the interface controlling LED numeral method, and circuit can be more succinct, and using can be easier, and mode of operation can be more flexible various.
(2) present invention adopts the Anti-interference Design of MAX813L chip, is that native system energy is long-term, stable, reliably runs.
Accompanying drawing explanation
Fig. 1 is the hardware elementary diagram of the present invention；
Fig. 2 is the system flow chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing citing, the present invention is described in more detail:
It is the hardware elementary diagram of the present invention in conjunction with Fig. 1, Fig. 1.The main chip of the hardware system of the present invention includes 8031 single-chip microcomputers, MAX7219 chip, MAX232 chip, MAX813L chip.8031 single-chip microcomputers are the chip of a core in the present system, play the effect controlling whole LED display driving system.MAX7219 is a kind of highly integrated serial input/output common cathode display driver, it may be achieved the interface of microprocessor and 87 piece of digital LED or 64 single LED.Adopt MAX813L chip as anti-interference chip.
The work process of the present invention is: from PC input one with letter data (as: A123.4567), it is processed into serial 16 system numbers through PC, and it is transferred on 8031 single-chip microcomputers by MAX232,8031 single-chip microcomputers carry out simple process data again after receiving data and are just transferred to LED(by MAX7219 chip and include 8 × 8 dot matrix and 77 segment numeral pipes) on, thus reaching the 8031 Single-chip Controlling LED display that will carry out, on LED, finally also show that A123.4567.Meanwhile, the scaling position of input and output data must be except letter, from the number of the left side between the 3rd numeral and the 4th numeral.
It is the system flow chart of the present invention in conjunction with Fig. 2, Fig. 2.Input function described on PC in the design is including two parts: (1) by keyboard being wanted the data of display on LED to be input in PC.(2) data entering into PC process, and allow it become the code of a series of 16 systems, and leave in an array, for ensuing ready with 8031 single chip communications.
The communication protocol of the use in the present invention is as follows:
(1) serial communication baud rate is 4800bps；
(2) frame format is 8 bit walks, and high 4 is bit code, and low 4 is the content communicated；
(3) setting the address code of single-chip microcomputer as F1H, first contact address code, correctly then transmits data such as address code before data is transmitted, otherwise continues contact address code；
(4) no parity position, whether correctly the method that the communication of data adopts cumulative sum effect, namely often transmit one group of data (number is made by oneself), effect one-accumulate and, correctly then loopback 00H, otherwise loopback FFH；
(5) contact information is that 8031 single-chip microcomputers actively got in touch with by PC；
(6) PC adopts COM2 communication.
Claims (3)
1. SCM Based LED numeral method system, is characterized in that the main chip of the hardware system of the present invention includes 8031 single-chip microcomputers, MAX7219 chip, MAX232 chip, MAX813L chip；8031 single-chip microcomputers are the chip of a core in the present system, play the effect controlling whole LED display driving system；MAX7219 is a kind of highly integrated serial input/output common cathode display driver, it may be achieved the interface of microprocessor and 87 piece of digital LED or 64 single LED；Adopt MAX813L chip as anti-interference chip.
2. SCM Based LED numeral method system according to claim 1, it is characterized in that the work process of the present invention is: from PC input one with letter data (as: A123.4567), it is processed into serial 16 system numbers through PC, and it is transferred on 8031 single-chip microcomputers by MAX232, 8031 single-chip microcomputers carry out simple process data again after receiving data and are just transferred to LED(by MAX7219 chip and include 8 × 8 dot matrix and 77 segment numeral pipes) on, thus reaching the 8031 Single-chip Controlling LED display that will carry out, finally on LED, also show that A123.4567；Meanwhile, the scaling position of input and output data must be except letter, from the number of the left side between the 3rd numeral and the 4th numeral.
3. SCM Based LED numeral method system according to claim 1, is characterized in that on PC, input function is including two parts: (1) is input to the data being wanted on LED display in PC by keyboard；(2) data entering into PC process, and allow it become the code of a series of 16 systems, and leave in an array, for ensuing ready with 8031 single chip communications.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410747919.7A CN105741723A (en) | 2014-12-10 | 2014-12-10 | LED nixie tube display system based on single-chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410747919.7A CN105741723A (en) | 2014-12-10 | 2014-12-10 | LED nixie tube display system based on single-chip microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105741723A true CN105741723A (en) | 2016-07-06 |
Family
ID=56239575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410747919.7A Pending CN105741723A (en) | 2014-12-10 | 2014-12-10 | LED nixie tube display system based on single-chip microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105741723A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390080A (en) * | 2015-12-28 | 2016-03-09 | 哈尔滨米米米业科技有限公司 | LED nixie tube display system based on 8031 single-chip microcomputer |
| CN112198786A (en) * | 2020-04-27 | 2021-01-08 | 昇显微电子(苏州)有限公司 | Method and device for realizing digital clock |
-
2014
- 2014-12-10 CN CN201410747919.7A patent/CN105741723A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390080A (en) * | 2015-12-28 | 2016-03-09 | 哈尔滨米米米业科技有限公司 | LED nixie tube display system based on 8031 single-chip microcomputer |
| CN112198786A (en) * | 2020-04-27 | 2021-01-08 | 昇显微电子(苏州)有限公司 | Method and device for realizing digital clock |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2003062946A3 (en) | System and method for generating user interface code | |
| CN103136930B (en) | Infrared remote control system transmission end and realization method thereof | |
| TW200636485A (en) | Method, apparatus and system to generate an interrupt by monitoring an external interface | |
| TW200603430A (en) | System and method for controlling LED indicator | |
| CN105741723A (en) | LED nixie tube display system based on single-chip microcomputer | |
| CN203241985U (en) | Flexible server BIOS upgrading device | |
| CN105929739A (en) | Two-bus electromagnetic valve control system and control method | |
| CN105390080A (en) | LED nixie tube display system based on 8031 single-chip microcomputer | |
| CN204904218U (en) | Mouse is felt to body | |
| CN211786698U (en) | Lower computer experimental device based on C # programming | |
| CN203340386U (en) | Drive power supply of infrared remote control stepless dimming band night lamp | |
| CN208061961U (en) | A kind of control assembly based on relay | |
| CN207947935U (en) | A kind of RS485 turns the controller of DMX512 | |
| CN101231326A (en) | Device and method for testing general DVD-P/DVD-R front panel | |
| CN204747529U (en) | CNC lathe and be used for main shaft of this lathe | |
| CN204806991U (en) | Regularly explode controlling means | |
| CN104329779B (en) | Gateway controller and control system of air conditioning unit | |
| CN204795732U (en) | But piece appearance is seen in automatic switch's projection | |
| CN202646857U (en) | Electronic type valve control circuit device based on meter bus control | |
| CN202093344U (en) | Electric cam controller | |
| CN204331718U (en) | A kind of controller general write device hardware platform | |
| CN202533763U (en) | Downhole-instrument-release-used timing controller applicable to high-temperature environment | |
| CN103279074A (en) | Wireless intelligent home system | |
| CN202025201U (en) | Low power consumption baking oven controller circuit | |
| CN203788265U (en) | Wakeup circuit of intelligent household electrical appliance control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |