mpx4115數(shù)字氣壓計(jì)設(shè)計(jì)設(shè)計(jì)

1、沈陽(yáng)理工大學(xué)學(xué)士學(xué)位論文I摘要?dú)鈮河?jì)被廣泛應(yīng)用于國(guó)防領(lǐng)域、工業(yè)領(lǐng)域、醫(yī)療領(lǐng)域以及我們?nèi)粘＜彝ド钪?。本設(shè)計(jì)中就介紹了一種氣壓的實(shí)時(shí)顯示設(shè)備。它是利用軟、硬件基礎(chǔ)知識(shí)，通過(guò)單片機(jī)與氣壓傳感器的結(jié)合，使得在液晶顯示器上顯示出當(dāng)前大氣壓值。本文詳盡的描述了基于MPX4115氣壓計(jì)的軟硬件實(shí)現(xiàn)過(guò)程。設(shè)計(jì)是基于氣壓傳感器MPX4115的精密數(shù)字氣壓計(jì)系統(tǒng)。通過(guò)氣壓傳感器MPX4115獲得與大氣壓相對(duì)應(yīng)的模擬電壓值并經(jīng)過(guò)電壓頻率(VF)轉(zhuǎn)換模塊轉(zhuǎn)換

2、為數(shù)字脈沖通過(guò)單片機(jī)接收該脈沖信號(hào)，得到單位時(shí)間內(nèi)獲得的脈沖數(shù)，依據(jù)電壓與頻率的線性關(guān)系式計(jì)算出所對(duì)應(yīng)的實(shí)際氣壓值，最后在單片機(jī)的控制下由液晶顯示電路顯示出實(shí)際氣壓值。關(guān)鍵詞關(guān)鍵詞：?jiǎn)纹瑱C(jī)；氣壓傳感器；VF轉(zhuǎn)換器；液晶顯示沈陽(yáng)理工大學(xué)學(xué)士學(xué)位論文III目錄1緒論...................................................................11.1課題背景..............

3、..............................................11.2技術(shù)概況及發(fā)展趨勢(shì)..................................................11.2.1傳感器的技術(shù)性能................................................11.2.2傳感器的發(fā)展趨勢(shì)...................................

4、.............31.3數(shù)字氣壓計(jì)系統(tǒng)設(shè)計(jì)意義..............................................52系統(tǒng)總體設(shè)計(jì)...........................................................62.1設(shè)計(jì)整體思想........................................................62.2系統(tǒng)總體框圖...

5、.....................................................62.3數(shù)據(jù)采集模塊........................................................72.3.1數(shù)據(jù)采集模塊的芯片選擇.........................................72.3.2數(shù)據(jù)采集模塊的原理圖...........................

6、................72.3.3氣壓傳感器MPX4115的原理圖.....................................82.4數(shù)據(jù)轉(zhuǎn)換模塊........................................................92.4.1數(shù)據(jù)轉(zhuǎn)換芯片選擇...............................................92.4.2數(shù)據(jù)轉(zhuǎn)換電路部分電路原理

7、圖....................................102.4.3LM331的原理..................................................112.5數(shù)據(jù)處理模塊.......................................................112.5.1數(shù)據(jù)處理模塊的芯片選擇..................................

8、......112.5.2單片機(jī)部分的原理圖............................................122.5.3AT89C52引腳及功能............................................122.6顯示模塊及芯片選擇.................................................152.6.1顯示模塊的芯片選擇............

9、................................152.6.2顯示器LCD部分的原理圖........................................152.6.3LCD1602原理..................................................162.6.4電源模塊的原理圖..............................................18