LED nixie tube display system based on single-chip microcomputer

A technology of LED digital tube and display system, applied in static indicators, instruments, etc., can solve the problems of LED drive circuit not working normally, poor operation function of single chip, interference of transmission channel, etc., to achieve flexible and diverse working modes, simple circuit, Easy-to-use effects

Inactive Publication Date: 2016-07-06
HARBIN MIMI RICE IND TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor computing function of the single-chip microcomputer, when the system requires fast processing of complex data, it will be very difficult for the single-chip microcomputer to cope with this situation.
At the same time, due to the wide range of uses of the LED display drive circuit, it is often used in various work sites, and there are generally various interference sources in the work site (usually the interference can be divided into two types: one is The interference caused by the voltage power supply; the second is the interference caused by reasons other than the power supply, mainly the interference of the transmission channel), which will bring many problems to the operation of the system and make the LED drive circuit unable to work normally. have serious consequences

Method used

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  • LED nixie tube display system based on single-chip microcomputer
  • LED nixie tube display system based on single-chip microcomputer

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Embodiment Construction

[0022] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0023] combine figure 1 , figure 1 It is a hardware schematic diagram of the present invention. The main chips of the hardware system of the present invention include 8031 ​​single-chip microcomputer, MAX7219 chip, MAX232 chip, MAX813L chip. The 8031 ​​single-chip microcomputer is a core chip in this system, which plays a role in controlling the entire LED display drive system. The MAX7219 is a highly integrated serial I / O common-cathode display driver that interfaces a microprocessor with 8-bit 7-segment LEDs or 64-bit single LEDs. The MAX813L chip is used as the anti-jamming chip.

[0024] The working process of the present invention is: input a data with a letter (such as: A123.4567) from the PC, process it into a series of hexadecimal numbers through the PC, and transmit it to the 8031 ​​single-chip microcomputer through MAX232, after the 8031 ​​single-chi...

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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 [0001] The invention relates to a digital display system, in particular to an embedded system which adopts a single-chip microcomputer to drive LED digital tube display. Background technique [0002] With the development of society, the advancement of science and technology, and the continuous improvement of people's living standards, there is a need for an LED display drive circuit in industrial control, instrumentation, graphic display, and window advertising display systems in post and telecommunications and other industries. In fact, LED is no stranger to us, and we can often see this kind of display, such as electronic billboards on the street, electronic score display boards in stadiums, digital displays in instruments and meters, and so on. Because of this, designing a simple, efficient and reliable LED display driving circuit and its program will have a wide range of uses. [0003] Judging from the current LED display driving circuit, a timing or int...

Claims

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Application Information

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IPC IPC(8): G09G3/14
Inventor 李冰
Owner HARBIN MIMI RICE IND TECH CO LTD
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