台灯亮度控制电路设计.docx

台灯亮度控制电路设计DESKLAMP BRIGHTNESS CONTROL CIRCUIT DESIGN学院（部）：电气与信息工程学院专业班级： 电子08-3 学生姓名： 夏璐露 指导教师： 何晶晶讲师 2012 年 5 月 30 日5台灯亮度控制电路设计 摘要台灯是人们日常生活的必需品之一，但是经常有人忘记关灯而造成巨大的能源浪费。而且人们往往要在夜晚时摸黑去开灯，非常的不方便。现在的台灯绝大部分是采用普通的白炽灯、荧光灯、节能灯和螺旋节能灯 ,并且控制方式多采用手动开关,不能连续调节，更不能自动调节。本文以热释电红外传感器和BISS0001集成芯片为主设计了一款智能LED台灯。该台灯具有智能开关自动调光等功能，免去手动控制的繁琐，体现了现代家电智能化人性化的设计理念。同时本台灯还具有保护视力的功能。当用户离台灯过近时，台灯会发出警报提醒用户。关键词：智能开关，自动控制，保护视力，BISS0001DESKLAMP BRIGHTNESS CONTROL CIRCUIT DESIGNABSTRACTThe desk lamp is one of the necessities of our daily life. But people often forget to turn off the lights and caused great waste of energy. Its very inconvenient to turn on the lights in the dark. Now most of the desk lamp is using filament lamp, fluorescent lamp and energy-saving lamps.And the control mode is often used manual switch.Those desk lamp cant continuous adjustment and cant automatic adjustment,too.This project design a kind of intelligence desk lamp by using heat-releasing infrared sensor and BISS0001.This desk lamp have intelligent switch and it can automatically adjustable light.You neednt control this desk lamp by your hands. This reflects the modern home appliance intelligent and human nature in the design idea. At the same time the desk lamp also have the function of protect eyesight . When the user stand too close to the desk lamp,it will warn people to leave the desk lamp by rang the alarm.KEYWORDS: smart switch, auto-control, protect eyesight, biss0001目录摘要IABSTRACTII1绪论11.1方案的提出11.2方案介绍21.2.1方案选择21.2.2 功能与指标31.2.3方案简述32部分元件介绍52.1 7812/7805稳压器52.1.1 LM78系列稳压器结构图52.1.2 LM78系列稳压器介绍52.2热释电红外传感器72.2.1热释电传感器结构72.2.2热释电传感器简介72.2.3热释电传感器RE200B的参数92.3 BISS0001集成芯片102.3.1 BISS0001结构图102.3.2 BISS0001叙述112.3.3 BISS0001管脚说明122.3.4 BISS0001工作原理132.4光电耦合器152.4.1光电耦合器原理图152.4.2光电耦合器常用参数152.4.3光电耦合器选取规则162.4.4光电耦合器应用于开关电路中的工作原理172.4.5使用光电耦合器的注意事项192.5三极管恒流源192.5.1三极管的恒流特性192.5.2三极管射极偏压设计范例203硬件组成223.1电源模块223.1.1电源模块电路图223.1.2电源模块电路分析223.2感应信号处理模块243.2.1感应信号处理模块电路图243.2.2 热释电红外传感器电路分析253.2.3 信号放大电路电路分析263.2.4 延时电路电路分析283.2.5 其他组成部分电路分析293灯光处理模块31