摘要:濕度自動控制廣泛應用于實驗室、大棚、花圃、糧倉乃至土壤等各個領域，已成為21世紀的熱門研究項目，是工農業生產過程和生活中必須考慮的因素。作為最常見的被控參數，濕度已經不再是相互獨立的物理量，而應在系統中綜合考慮。而傳統的濕度控制則利用濕度表、毛發濕度表、雙金屬式測量計和濕度試紙等測試器材，這種人工控制的方法不僅費時費力、效率低，且隨機性較大、誤差大，因此就需要一種造價低廉、使用方便、計算精確且智能的濕度控制儀器。

　　　本次設計的要求就是利用單片機和超聲波加濕器對濕度控制，通過使用STC12C5A16AD單片機作為主控芯片，AM1001濕度傳感器模塊檢測濕度數據，12864液晶顯示屏模塊顯示空氣濕度，超聲波加濕器控制濕度組成了整個系統。首先通過AM1001數字濕度傳感器把采集到的濕度數據傳給單片機，經過單片機的處理，通過液晶模塊將當前空氣濕度實時顯示。同時通過單片機對超聲波加濕器進行控制，當濕度過低時，加濕器自動加濕，濕度過高時，加濕器自動停止加濕，從而達到自動控制室內空氣濕度的目的。該系統具有控濕精度高、功能強、體積小、價格低、簡單靈活等特點，成功達到了設計要求。

　　　本次設計的室內空氣濕度自動控制系統成功的實現了課題要求，將室內空氣濕度控制在了75%RH～85%RH之內。

關鍵詞：濕度 超聲波 加濕器 自動控制 單片機

ABSTRACT:Humidity control widely used in laboratories, greenhouses, garden, barn and even the soil and other fields, has become a hot research projects of the 21st century, is the process of industrial and agricultural production and daily life must be considered. As the most common parameter to be controlled, humidity is no longer mutually independent physical quantities, but should be taken into account in the system. The humidity control is the use of traditional hygrometer, hair hygrometer, bimetal strips, etc. and humidity meter test equipment, this manual control method is not only time-consuming, inefficient, and the randomness of a larger error is large, and therefore need for a low cost, easy to use, accurate and intelligent computing humidity control instruments.

　　　The design of the requirement is to use the microcontroller and ultrasonic humidifier for humidity control, through the use of STC12C5A16AD microcontroller as the master chip, AM1001 humidity sensor module detects humidity data, 12,864 LCD display module air humidity, ultrasonic humidifier humidity control consisting of the entire systems. Firstly AM1001 Digital Humidity Sensor the collected data to the microcontroller humidity, after MCU processing and accurate to the current air humidity display on the LCD screen. At the same time through the microcontroller to control the ultrasonic humidifier, humidifier automatically when the humidity is too low humidity, excessive humidity, the humidifier automatically stop humidification to achieve automatic control of indoor air humidity purposes. The system has high precision control humidity, strong function, small size, low price, simple and flexible features, the success of the design requirements.

　　　The design of the indoor air humidity automatic control system successful realization of the project requirements, the indoor air humidity controlled at 75% RH ~ 85% RH.

Keywords: ultrasonic wave；humidifier；automatic control；MCU