| 基于AVR单片机的LED自适应调光系统 |
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| 引用本文： | 宋适,刘廷章,艾叶,许炜. 基于AVR单片机的LED自适应调光系统[J]. 电气自动化, 2009, 31(1): 33-35 |
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| 作者姓名： | 宋适 刘廷章 艾叶 许炜 |
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| 作者单位： | 上海大学机电工程与自动化学院上海市电站自动化技术重点实验室,上海,200072 |
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| 基金项目： | 上海市重点学科建设项目，台达电力电子科学发展计划实施委员会太阳能LED照明的高效驱动与释能控制项目 |
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| 摘 要： | 随着LED照明技术快速发展，对LED自适应调光技术需求更加强烈。该文以AVR单片机中ATmega16作为控制器，利用基于12C（Inter Integrated Circuit）总线的光传感芯片TSL2561采集室内环境光照度，采用脉宽调制（Pulse Width Modulation—PWM）方式调节MOS管，进而调节LED的发光亮度，最终维持室内环境光照度在一个设定的水平。完成了LED自适应调光系统的硬件设计和软件编程，重点介绍了ATmega16通过12C总线读取光传感器芯片TSL2561数据、传感器数据转换为实际的室内环境照度、PWM信号生成等的实现方法。
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| 关 键 词： | LED PWM 自适应调光 I2C总线 控制器 |
LED Adaptive Dimming System Based on AVR Single Chip Computer |
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| Song Shi,Liu Tingzhang,Ai Ye,Xu Wei. LED Adaptive Dimming System Based on AVR Single Chip Computer[J]. Electrical Automation, 2009, 31(1): 33-35 |
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| Authors: | Song Shi Liu Tingzhang Ai Ye Xu Wei |
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| Affiliation: | Song Shi Liu Tingzhang Ai Ye Xu Wei (Shanghai University,Shanghai 200072,China) |
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| Abstract: | As the fast development of LED lighting technology, LED adaptive dimming technique is needed more strongly. It is presented that the ATmega16 in AVR single chip computer is used as controller, and the photosensor chip TSL2561 with I2C(Inter Integrated Circuit) bus is employed to measure the indoor ambient illuminance. MOS is adjusted by way of PWM(Pulse Width Modulation- PWM) to regulate the lightness of LED. The hardware designing and software programming of LED adaptive dimming system is completed in the ... |
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| Keywords: | LED PWM |
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