【正文】 fy our fast living pace. If it control the humidity based on the temperature, it will improve the living fort level. The humidity control system based on MCS is very convenient and can improve the control quality largely. The design uses a AT89S52 , a temperature sensor DS18B20 and a humidity HS1101,it can measure and display the temperature and the relative humidity with the LCD1602. Besides it uses the LC shaking circuit monitoring the water level, it will alarm when the water is not enough. And according to DAC0832,it enforces the DA transition and connects atmoizer ,then regulate the relative humidity. Keywords: Humidity control； microcontroller； circuit 目 錄 II 目 錄 摘 要 ................................................................... I Abstract .................................................................. I 目 錄 .................................................................. II 1 緒論 .................................................................... 1 課題研究背景與意義 ................................................................................................. 1 研究現(xiàn)狀分析和發(fā)展前景 ......................................................................................... 1 技術指標 ..................................................................................................................... 1 2 總體設計 ................................................................ 1 系統(tǒng)整體設計 ............................................................................................................. 1 系統(tǒng)整體 設計框圖 ..................................................................................................... 2 3 硬件的設計 .............................................................. 2 微控制器模塊 ............................................................................................................ 2 AT89S52 的介紹 ............................................................................................. 2 控制電路 ......................................................................................................... 5 溫度測量模塊 ............................................................................................................ 6 溫度傳感器概述 ............................................................................................ 6 DS18B20 介紹 ................................................................................................. 6 DS18B20 與單片機的連接 ............................................................................. 7 濕度測量模塊 ............................................................................................................ 7 濕度概述 ........................................................................................................ 7 濕度傳感器概述 ............................................................................................ 8 HS1101 濕度傳感器介紹 ............................................................................... 8 濕度檢測電路的連接 ..................................................................................... 8 LCD 顯示模塊 ........................................................................................................... 10 液晶概述 ...................................................................................................... 10 1602 的介紹 ................................................................................................. 10 電路的連接 ................................................................................................... 11 D/A 轉換電路 ........................................................................................................... 11 DAC0832 的介紹 ........................................................................................... 11 霧化器的選擇 ............................................................................................... 12 目 錄 III 工作電路圖的連接 ....................................................................................... 12 水位報警電路 ........................................................................................................... 13 LC 震蕩電路的介紹 ..................................................................................... 13 諧振電路 ....................................................................................................... 14 RC 正弦波振蕩電路 ..................................................................................... 15 電路的連接 ................................................................................................... 17 電源的設計 ............................................................................................................... 18 結論 ..................................................................... 19 參考文獻 ................................................................. 20 致謝 ..................................................................... 21 河北科技師范學院 2021屆本科畢業(yè)設計 1 1 緒論 課題研究背景與意義 隨著科技發(fā)展的加快，人們生活水平的提高，人們對自身的身體健康關注度也越來越高。普通的加濕器只能起到一味的加濕作用并且為手動控制，無法滿足當代快節(jié)奏的人類的需求。采用單片機來對溫度進行控制，不僅具有控制方便、組態(tài)簡單和靈活性大等優(yōu)點，而且可以大幅