| 机车LCD亮度自动调节系统设计 |
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| 引用本文： | 刘晓琳,娄淑琴,刘雪莲.机车LCD亮度自动调节系统设计[J].铁路计算机应用,2005,14(6):40-42. |
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| 作者姓名： | 刘晓琳 娄淑琴 刘雪莲 |
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| 作者单位： | 北京交通大学,电子信息工程学院,北京,100044 |
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| 摘 要： | 针对现代化机车上LCD亮度自动调节的需要,提出一种基于EPLD实现LCD亮度自动调节的新型控制系统.EPLD控制系统以光照传感器TSL2550检测环境光照度,经过视函数和对比度矫正,对LCD显示器的亮度做出自动调整.系统采用全硬件实现,提高了响应速度,避免了软件实现带来的不利因素.电路简单,便于微型化.
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| 关 键 词： | 光照传感器 EPLD LCD 亮度 |
| 文章编号： | 1005-8451(2005)06-0040-03 |
| 收稿时间： | 2005-06-15 |
| 修稿时间： | 2004年12月20 |
Design for Auto Control System of Luminance of LCD used in locomotive |
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| LIU Xiao-lin,LOU Shu-qin,LIU Xue-lian.Design for Auto Control System of Luminance of LCD used in locomotive[J].Railway Computer Application,2005,14(6):40-42. |
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| Authors: | LIU Xiao-lin LOU Shu-qin LIU Xue-lian |
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| Abstract: | To improve the LCD used in modern locomotive, a new kind of System based on EPLD, was proposed to implement the auto-control of the Luminance of LCD. According to the measurement result of optoelectric sensor on the background luminance, the EPLD control system automatically adjusted the luminance of LCD on the visual acuity function and the brightness contrast. The automatic control functions were not implemented with software but hardware circuit and then the response speed of the control system were improved, various problems avoided. |
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| Keywords: | optical sensor EPLD liquid crystal diplay luminance |
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