毕业设计,毕业论文,LED在汽车照明领域的应用与电路设计

LED具有结构简单、无延迟、节能效果显著、重量轻、安全性能好、抗震、无污染、免维护和寿命长等特征。LED已成为钨丝灯、卤素灯的必然取代产品,将成为汽车的第四代照明光源。在通用照明LED技术尚未成熟前,车用市场是最被看好的LED市场。本文从LED在汽车照明系统中应用的可行性入手,分析了LED在汽车低照度及高照度照明中的应用,对LED应用于汽车照明系统存在的问题进行了分析,并设计了一个LED驱动SCH电路和PCB板。

摘 要

汽车光源在照明的领域中占有极其重要的地位，汽车照明的产量占整个照明光源总产量的10％左右。LED作为一种新型的固态光源，正在逐渐被应用在汽车的照明系统中。LED是继白炽灯、荧光灯、高强度气体放电灯之后的第四代光源。LED具有结构简单、无延迟、节能效果显著、重量轻、安全性能好、抗震、无污染、免维护和寿命长等特征。LED已成为钨丝灯、卤素灯的必然取代产品，将成为汽车的第四代照明光源。在通用照明LED技术尚未成熟前，车用市场是最被看好的LED市场。本文从LED在汽车照明系统中应用的可行性入手，分析了LED在汽车低照度及高照度照明中的应用，对LED应用于汽车照明系统存在的问题进行了分析，并设计了一个LED驱动电路。

关键词：LED，汽车照明，刹车灯，LED驱动电路，Protel99

ABSTRACT

Automotive light sources have an extremely important position in the field of the

lighting. LED is a new type of solid-state light sources. LED is gradually being used in the automotive lighting systems. LED has a lot of advantages such as simple structure，without delay energy-saving，light weight，safety，earthquake，pollution-free，maintenance-free and long life. LED has replaced the tungsten lamp and the halogen lamps. LED is becoming the fourth generation lighting of automotive lighting. Before the LEDQ lighting technology is

general becomes mature the vehicle market is the most optimistic about the LED market. This article analyzes LED in the low light intensity and the high light intensity application from the feasibility that LED applies in the automobile lighting system. And analysis the question that LED applied in the automobile lighting system。And I design a LED driver circuit.

Key words: LED，automobile lighting，brake light，LED driver，Protel99

LED具有结构简单、无延迟、节能效果显著、重量轻、安全性能好、抗震、无污染、免维护和寿命长等特征。LED已成为钨丝灯、卤素灯的必然取代产品,将成为汽车的第四代照明光源。在通用照明LED技术尚未成熟前,车用市场是最被看好的LED市场。本文从LED在汽车照明系统中应用的可行性入手,分析了LED在汽车低照度及高照度照明中的应用,对LED应用于汽车照明系统存在的问题进行了分析,并设计了一个LED驱动SCH电路和PCB板。

目 录

1 绪论 ......................................................................................................................................................... 1

1.1 引言............................................................................................................................................... 1

1.2 车用光源的发展 ........................................................................................................................ 1

1.3 LED发光二极管的简介 ........................................................................................................... 2

1.4 LED照明技术的发展历程 ....................................................................................................... 3

1.5 LED车用光源的发展趋势分析 .............................................................................................. 4 2 LED与其他车用光源性能特性分析比较........................................................................... 6

2.1 引言............................................................................................................................................... 6

2.2 LED车用光源的优势 ................................................................................................................ 6

2.3 LED车用光源存在的主要问题 .............................................................................................. 7

2.4 小结............................................................................................................................................... 8 3 LED在汽车照明领域的应用 ..................................................................................................... 9

3.1 引言............................................................................................................................................... 9

3.2车灯分类与基本要求 ................................................................................................................ 9

3.3 LED在汽车低照度照明中的应用 ....................................................................................... 10

3.4 LED在汽车高照度照明中的应用 ....................................................................................... 10

3.5 小结............................................................................................................................................. 12 4 LED车用光源设计分析 .............................................................................................................. 13

4.1 引言............................................................................................................................................. 13

4.2 车用LED封装技术 ................................................................................................................. 13

4.3 车用LED灯光亮度要求 ........................................................................................................ 14

4.4 车用LED光学设计 ................................................................................................................. 14

4.5 车用LED散热问题 ................................................................................................................. 14

4.6小结 .............................................................................................................................................. 15 5 LED车用刹车灯的硬件设计 ............................ …… 此处隐藏：18933字，全部文档内容请下载后查看。喜欢就下载吧 ……