目　　錄
摘要 1
關(guān)鍵詞 1
ABSTRACT 1
KEY WORDS 1
引 言 2
1 系統(tǒng)的總體設(shè)計(jì) 2
1.1 系統(tǒng)設(shè)計(jì)的技術(shù)背景 2
1.1.1 AT89S51單片機(jī)簡(jiǎn)介 2
1.1.2 無線通信技術(shù)簡(jiǎn)介 3
1.2 系統(tǒng)設(shè)計(jì)的應(yīng)用背景 3
1.3 系統(tǒng)的設(shè)計(jì)方法 3
1.4 系統(tǒng)設(shè)計(jì)要求 3
2 系統(tǒng)主要模塊 3
2.1 單片機(jī)最小系統(tǒng) 3
2.2 顯示模塊 4
2.2.1 LCD12864簡(jiǎn)介 4
2.2.2 LCD1602簡(jiǎn)介 6
2.3 溫度采集模塊 7
2.4 無線收發(fā)模塊 8
3 系統(tǒng)硬件軟件設(shè)計(jì) 9
3.1 系統(tǒng)主站電路 9
3.2 系統(tǒng)從站電路 10
3.3 系統(tǒng)通信協(xié)議 11
3.3.1 串口通信方式設(shè)置 11
3.3.2 信息幀格式 11
3.3.3 命令字 12
3.4 主站程序 12
3.5 從站程序 13
4 結(jié)果分析與討論 15
4.1 系統(tǒng)運(yùn)行結(jié)果 15
4.2 討論 17
4.3 總結(jié) 17
致謝 17
參考文獻(xiàn) 18
附錄 19

基于AT89S51的無線數(shù)據(jù)采集系統(tǒng)的設(shè)計(jì)


摘要： 基于AT89S51單片機(jī)及無線通信模塊，實(shí)現(xiàn)了遠(yuǎn)距離數(shù)據(jù)采集系統(tǒng)。系統(tǒng)由主站和從站兩部分組成。主站主要完成遠(yuǎn)距離現(xiàn)場(chǎng)數(shù)據(jù)的采集和處理，包括鍵盤輸入模塊、無線收發(fā)模塊和顯示模塊；從站由數(shù)據(jù)采集、鍵盤輸入、無線收發(fā)和信息顯示等四個(gè)模塊組成，主要完成現(xiàn)場(chǎng)數(shù)據(jù)的采集和向主站傳輸數(shù)據(jù)信息。設(shè)計(jì)中以溫度采集為例實(shí)現(xiàn)了無線數(shù)據(jù)采集，從站的溫度采集模塊的測(cè)量范圍為-20～+40℃，現(xiàn)場(chǎng)溫度可以實(shí)時(shí)顯示并通過無線傳輸方式上傳到主站。從站可以設(shè)置報(bào)警溫度，當(dāng)溫度高于報(bào)警溫度時(shí)，系統(tǒng)自動(dòng)報(bào)警并向主站發(fā)送報(bào)警信息數(shù)據(jù)。主站可以向從站發(fā)送指令，收集從站所測(cè)溫度值、報(bào)警溫度值及報(bào)警情況，并將從站的信息在液晶屏上顯示。

關(guān)鍵詞： 溫度數(shù)據(jù)采集 主站 從站 無線 AT89S51
The design of wireless data collection system based on AT89S51
Student majoring in communication engineering Huang wei
Tutor Qin wenhua

Abstract： The data collection system can collect remote data based on AT89S51 and wireless communication module. It includes two units, a host unit and a client unit. The host includes key input module, wireless module and display module. It can collect and process the distance data. The client includes temperature data collection module, key input module, wireless module and display module. The client is used to collect the field data and transmit information to the host. The design of wireless data collection takes temperature collection for example. The measurable temperature value of client ranges from -20 ℃ to +40℃.The field temperature can display instantly and transmit to the host through wireless module. It can also achieve alarming when the temperature is above the setting value and transmit the alarming information to the host. The alarming value can be set by user. The host sends command to control the client. It also receives temperature value, alarming value and alarming information from the client and displays the client information on a LCD.

Key words: temperature data collection; host; client; wireless; AT89S51