传感器设计实验论文题目：家庭环境检测系统的设计与制作专业名称：电子信息工程姓名：学号：班级：13级电信二班指导教师：陆清茹2016年10月25日目录一、绪论..................................................................31.1前言..................................................................................31.2选题背景.............................................................................31.3国内外发展状态.......................................................................41.3.1粉尘测量方法...................................................................41.3.2粉尘检测仪的性能与优点.........................................................51.3.3研究的意义.....................................................................51.4本文主要工作.........................................................................5二、PM2.5粉尘浓度测试仪系统设计方案......................................62.1系统的功能和技术指标.................................................................62.2工作原理.............................................................................72.2.1粉尘检测原理...................................................................72.2.2系统工作原理...................................................................82.3程序框图和流程图......................................................................82.3.1程序框图设计...................................................................82.3.2粉尘检测仪程序主流程图设计.....................................................9三PM2.5粉尘测试仪系统硬件设计..........................................113.1单片机部分...........................................................................113.1.1系统CPU器件选择..............................................................113.2信号采集电路........................................................................133.3LED1602液晶显示设计电路............................................................143.4声光报警提示电路及LED灯电路........................................................153.5换风系统电路.........................................................................173.6按键电路.............................................................................17四PM2.5粉尘测试仪系统软件设计.........................................184.1系统程序流程.........................................................................194.2浓度参考值的键盘设定程序设计........................................................194.2.1键盘扫描的设计................................................................204.3信号采集部分的程序设计..............................................................214.3.1数据采集流程图设计............................................................214.4蜂鸣器报警部分程序设计..............................................................224.5LED1602液晶显示部分的程序设计......................................................234.5.1显示流程图设计.................................................................23五DHT11产品概述.........................................................24六HC-SR501人体感应模块功能特点..........................................25七PM2.5粉尘检测仪的测试结果及结论......................................257.1调试................................................................................25参考文献...........................................
