光电自动水龙头重庆大学专业课程设计

蔡界光：光电自动水龙头1光电自动水龙头目录1.引言...................................................................................................................21.1问题的提出.................................................................................................................21.2什么是光电自动水龙头..............................................................................................22.总体设计..........................................................................................................22.1任务分析.....................................................................................................................22.2方案选择.....................................................................................................................32.3创新点的构思.............................................................................................................32.4确定指标.....................................................................................................................32.5原理框图.....................................................................................................................43.各组成部分工作原理介绍................................................................................43.1控制信号电路原理.....................................................................................................43.2NE555载波信号电路原理...........................................................................................53.3LED驱动电路原理......................................................................................................53.4红外线接收解调电路原理..........................................................................................63.5电平转换电路原理.....................................................................................................83.6控制执行电路原理.....................................................................................................83.7H桥驱动...