文档介绍：地下停车场LED调光灯电路设计
摘要
随着我国城市化的发展,地下停车场的也逐渐发展起来,目前的地下车库,一方面主要以荧光灯和白炽灯作为光源,功耗大且寿命短、易损坏,这种缺陷不仅造成停车场成本增高,还造成大量的能源浪费。而另一方面,为了便于控制,采用24小时持续供电的方式,能源浪费严重。针对目前地下车库照明设施能耗较高、能源浪费严重等问题,根据LED光源的特点,结合自动控制技术,设计了一种地下停车场LED调光灯。
系统以SST89E516RD为控制核心,采用恒流源驱动LED的方式,完成了系统软件和硬件的设计,实现了人(或车)来灯亮,人(或车)去灯暗的自动控制,从而达到绿色环保、节约能源的目的,同时灯光亮度能够平滑调节,使其适应人眼对光线的变化。
关键词:LED,红外检测,恒流驱动
Circuit Design of LED Dimmer Lamp for Underground Park
ABSTRACT
With the development of urbanization in China, underground parking lot also gradually developed, the present underground garage, on the one hand, mainly by the fluorescent lamp and incandescent lamp as light source, power consumption and short service life, easy to damage, the defect causes increased parking costs, also caused a lot of energy waste. On the other hand, in order to facilitate control, adopt the way of 24 hours of continuous power supply, energy waste is serious. Aiming at the underground garage lighting problem such as high energy consumption, energy waste serious, according to the characteristics of the LED light source, combined with automatic control technology, design a kind of underground parking lot LED dimming light.
System SST89E516RD as control core, with the method of constant current source driving the LED, completed the system hardware and software design, realized the person (or car) to the light, the person (or car) to light dark automatic control, so as to achieve the purpose of the green environmental protection, energy saving, lamp brightness can smooth adjustment at the same time, make it adapt to the change of the human eye to light.
KEYWORDS: LED, infrared detection, constant current driver
目录
摘要 I
ABSTRACT II
1 绪论 1
引言 1
课题研究的目的和意义 1
课题提出的背景意义 2
课题的提出 2
国内外智能停车场照明系统发展的状况 2
课题的主要工作及论文结构安排 4
2 LED相关技术概述 5
LED驱动描述 5
LED特性 5
LED光源特点 8
LED驱动电源的分类及特点 8
调光技术描述 11
模拟调光 12
脉宽调制(PWM)调光 12
模拟调光和PWM调光比较 12
本章小结 13
3 系统总体设计 14
系统需求分析 14