| 基于单片机的小型LED灯牌亮度控制方法研究 |
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| 引用本文： | 何国荣,杨福增. 基于单片机的小型LED灯牌亮度控制方法研究[J]. 杨凌职业技术学院学报, 2011, 10(4): 10-13 |
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| 作者姓名： | 何国荣 杨福增 |
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| 作者单位： | 1. 西北农林科技大学机电学院,陕西杨凌,712100
2. 陕西省现代农业工程装备工程技术研究中心,陕西杨凌,712100 |
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| 摘 要： | 针对在制作小型LED灯牌时,为控制多个LED的亮度,一般采用较为复杂且成本高的硬件电路的情况,本文采用基于单片机的PWM固定占空比和PWM变占空比方法控制LED亮度,该方法只需简单硬件,且易于实现,成本较低,并通过仿真实验验证可以控制多个LED的亮度,表明能有效降低小型LED电子灯牌的制作成本。
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| 关 键 词： | LED PWM AT89C52 亮度控制 |
Study of the Small Advertising LED Lamp Illumination Control Based on Single-chip Microcomputer |
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| HE Guo-rong,YANG Fu-zeng. Study of the Small Advertising LED Lamp Illumination Control Based on Single-chip Microcomputer[J]. Journal of Yangling Vocational & Technical College, 2011, 10(4): 10-13 |
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| Authors: | HE Guo-rong YANG Fu-zeng |
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| Affiliation: | HE Guo-rong1,YANG Fu-zeng2 (1.College of Mechanical and Electronic Engineering,Northwest A&F University,Yangling,Shaanxi 712100,China,2.Research Center of Modern Agricultural Equipment and Engineering Technology of Shaanxi Province,Yangling 712100,China) |
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| Abstract: | It usually needs complex hardware system and costs highly for LED illumination control while making LED billboards.The authors adopted the methods of duty cycle PWM and duty ratio PWM based on single-chip microcomputer to control the LED illumination.The methods only need simple hardware and cost lower,which can control several LED illumination.Both of the methods have the advantages for several LED illumination control and can effectively reduce the cost of making LED billboards. |
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| Keywords: | LED PWM AT89C52 illumination control |
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