溫度傳感器的糧庫溫度檢測系統(tǒng)的研究

摘要
糧倉管理中最重要的問題是監(jiān)測糧堆中的溫、濕度變化。國家為糧食儲藏每年支付很高的費用，主要是因為監(jiān)測設備成本較高，管理方式不夠先進。在理論研究和實地考察實驗的基礎上，進行了糧食倉庫溫度和濕度實時在線巡回監(jiān)測與控制系統(tǒng)的設計和研制。溫度和濕度的檢測與控制對防止糧食霉變有著重要的意義，討論糧堆溫度和濕度變化的主要原因以及糧食倉庫中溫度和濕度的允許變化范圍。探討在線測量，計算和控制糧食倉庫溫度和濕度的原理和方法，基本消滅了糧食霉變事故，同時也節(jié)省了大量人力和物力，減輕了糧倉管理的工作強度，提高了糧庫管理效率，使糧食管理得到了安全可靠的保障。
正目前,糧庫中的溫濕度檢測,基本上是人工檢測,勞動強度大,繁瑣,由于檢測報警不及時,造成庫儲糧食損失的現(xiàn)象時有發(fā)生,于是,設計并研制性能價格比較高的糧庫溫濕度自動檢測系統(tǒng)迫在眉睫。由于大型糧庫分布廣、儲量大，糧庫的管理和監(jiān)測難度大，基于糧庫糧情檢測系統(tǒng)上的計算機管理軟件的設計，由每個糧倉中配置的下位機將糧情數(shù)據(jù)通過無線數(shù)傳模塊發(fā)送給上位機，上位機將下位機的數(shù)據(jù)以曲線和表格的形式表示出來，清晰直觀地顯示出各倉內(nèi)溫濕度狀況，由上位機對糧倉進行監(jiān)視，管理人員在控制室就可以看到實時糧情數(shù)據(jù)，對糧情數(shù)據(jù)進行分析，實現(xiàn)糧倉管理自動化、智能化。

關(guān)鍵字：溫濕度 糧倉 檢測系統(tǒng) 設計

ABSTRACT
 Barn management of the most important issue is monitoring the grain heap temperature and humidity changes. countries for grain storage to pay high fees each year, mainly due to high cost of monitoring equipment, management methods were not advanced enough in the theoretical study and field visits on the basis of experiments carried out a food storage temperature and humidity, real-time monitoring and control system circuit design and development. the temperature and humidity measurement and control to prevent mildew food of great significance to discuss the grain heap the main reason for the temperature and humidity changes as well as food storage temperature and humidity range allowed explore on-line measurement, calculation and control of food storage temperature and humidity, the principles and methods, and basic elimination of food mildew accident, but also save a lot of manpower and material resources, thereby reducing the intensity of granary management work to improve the efficiency of management of the granary, so that food management has been a safe and reliable protection
Are present, the grain depots in the temperature and humidity testing is basically a manual inspection, labor-intensive, cumbersome, due to not timely detection and alarm, resulting in the loss of library storage of food phenomena have occurred, so the design and development of the higher cost performance granary temperature and humidity automatic detection systems is urgent. because large granary widely distributed, large reserves and grain storage management and monitoring difficult, based on intelligence grain depot detection system on the design of computer management software, configured by each granary-bit machines will pay under the circumstances the number of data via wireless transmission module sends to the host computer, host computer the next bit plane data in the form of curves and tables that come out, clear and intuitive display of temperature and humidity conditions within the warehouse by the host computer to the granary to monitor, manage personnel in the control room can be real-time intelligence data to see food on the food situation analysis of the data to achieve granary management automation, intelligent.

KEY WORDS：humiture granary detecing system desing

目   錄
摘要 I
ABSTRACT II
目   錄 III
第一章 引言 1
1.1 糧倉溫室度檢測技術(shù)的發(fā)展現(xiàn)狀 1
1.2 課題的提出及研究的意義 3
1.3 本文的設計思路及預期結(jié)果 3
1.3.1 本文的設計思路 3
1.3.2 預期結(jié)果 4
第二章 糧倉溫濕度監(jiān)測系統(tǒng)設計基礎知識 5
2.1 溫濕度檢測技術(shù) 5
2.1.1 濕度的相關(guān)概念 5
2.1.2 濕度傳感器的分類及特點 6
2.1.3 溫度的相關(guān)概念 8
2.1.4 溫度傳感器的分類及特點 8
2.2器件及模塊的選擇 10
2.2.1處理器 10
2.2.2轉(zhuǎn)換器 10
2.2.3溫度傳感器 11
2.2.4濕度傳感器 11
2.2.5測控模塊 12
2.2.6顯示模塊 12
2.2.7報警模塊 13
第三章 糧倉溫室度檢測系統(tǒng)的具體設計 15
3.1設計結(jié)構(gòu) 15
3.2單片機在系統(tǒng)中的工作的原理（過程） 16
3.3 ATC0809轉(zhuǎn)換器 18
3.4熱電偶溫度傳感器 19
3.4.1補償電橋 19
3.5濕度傳感器 20
3.6 系統(tǒng)附帶電路及元件設計 21
3.6.1系統(tǒng)時鐘電路設計 21
3.6.2按鍵與按鈕的設計 22
3.6.3 電源的設計 22
3.7系統(tǒng)軟件部分 23
3.7.1顯示設計 23
3.7.2報警模塊 24
第四章 系統(tǒng)調(diào)試及結(jié)果分析 25
4.1 軟件調(diào)試 25
4.1.1調(diào)試方法 25
4.1.2調(diào)試步驟 25
4.2系統(tǒng)測試結(jié)果 26
4.3系統(tǒng)完成 26
參考文獻 28
附錄 29
致謝 32