摘 要：针对公共用水场所浪费水现象严重及目前市场上红外水龙头价格贵，得不到广泛应用的问题，提出设计双开关红外感应水龙头。本系统是以NE555为核心芯片的红外控水开关和限流开关相结合来实现。红外控水开关是基于红外感应原理，由红外线发射电路模块、红外线接收电路模块、时间延时电路模块、电源模块等组成。当有人用水遮挡住红外信号时，产生控制信号，开关闭合，电磁阀打开，有水流出；反之则关闭水源。限流开关由活塞和弹簧组成。最后经Multisim仿真成功。本设计具有节水限流、绿色环保、使用广泛等优点。83239

毕业论文关键词：水龙头；节水；红外感应；NE555

Design of Double Switch Infrared Inductive Water Tap

Abstract: In view of the phenomenon of waste water in public water sites and the current market price is expensive, not widely used in the problem, put forward the design of dual switch infrared sensor faucet。This system is based on NE555 as the core chip of infrared water control switch and limit switch to achieve。 Infrared water control switch is based on the principle of infrared induction, by the infrared emission circuit module, an infrared receiving circuit module, time delay circuit module, power module and other components。 When the infrared signal is covered with water, the control signal is generated, the switch is closed, the electromagnetic valve is opened, and the water flows out; conversely,turn off the water。 The current limiting switch is composed of a piston and a spring。 Finally by Multisim simulation success。 The design has the advantages of water saving, green environmental protection, wide use and so on。

Key Words: Faucet; Water saving;Infrared sensor; NE555

目  录

摘要 1

引言 1

1。方案选择 2

1。1方案一 ：圆珠笔式按钮开关方案 2

1。2方案二：红外感应双开关方案 3

1。3方案对比 5

2。红外感应控水开关硬件设计 6

2。1系统总体设计框图 6

2。2电路主要芯片介绍 6

2。3红外线发射电路模块 6

2。4红外线接收电路及信号放大电路模块 7

2。5时间延迟电路模块 8

2。6自来水开关电路模块 9

2。7电源电路模块 10

3。软件设计 10

3。1系统总体软件设计 10

3。2红外发射部分 11

3。3红外接收部分 12

4。仿真 13

4。1红外发射电路模块的工作状态仿真 13

4。2红外感应控水开关的工作状态仿真 15

5。分析总结 15

参考文献 16

附录 18

致谢 19

双开关红外感应水龙头的设计引言

随着消费者绿色消费观念的逐渐形成，国家基础建设的增多，环保法制的制定，节能政策的提出，水龙头，尤其是新型、绿色环保、节约水能、高质量的水龙头将会越来越广泛地应用于人们的日常生活中。