【正文】 器 mpx4115 的精密數(shù)字氣壓設(shè)計系統(tǒng)。成都理工大學(xué)工程技術(shù)學(xué)院畢業(yè)論文 基于傳感器 MPX4115 的智能壓力檢測系統(tǒng)設(shè)計與仿真 基于傳感器 MPX4115的智能壓力檢測系統(tǒng)設(shè)計與仿真 I 摘要 數(shù)字式氣壓計被廣泛應(yīng)用于當(dāng)前工業(yè)領(lǐng)域、國防領(lǐng)域、醫(yī)療領(lǐng)域以及日常生活中。本文詳細的描述了基于 mpx4115 氣壓計的多功能應(yīng)用以及軟硬件實現(xiàn)的過程 。 關(guān)鍵詞： mpx4115；氣壓傳感器；單片機；液晶顯示； V/F 裝換器 基于傳感器 MPX4115的智能壓力檢測系統(tǒng)設(shè)計與仿真 II Abstract Digital pressure gauge is widely used in the industrial field, national defense field, medical field and in daily life. This design introduced realtime display equip ment for pressure. It makes use of soft, hardware based on knowledge, through a bination of single chip microputer and pressure sensor, which shows the current high pressure in the liquid crystal display. This paper describes the process of application of multifunctional mpx4115 barometer of the hardware and software based on. This design is digital precision pressure design system of pressure sensor based on mpx4115. Mpx4115 pressure sensor through the received analog voltage corresponding to the atmospheric value, and through the voltage / frequency (V/F) loaded module loaded into digital pulse, pulse number through the microcontroller, based on the linear relationship between the voltage and frequency to calculate the actual pressure value corresponding to the rear, under the control of MCU by liquid crystal display the circuit shows the actual pressure values. The overall goal is to achieve system reliability, stability, security and economy. Keywords mpx4115 Gs pressure transducer Single chip microputer Liquid crystal display Voltage / frequency conversion 基于傳感器 MPX4115的智能壓力檢測系統(tǒng)設(shè)計與仿真 III 目錄 摘要 .................................................................................................................. I Abstract............................................................................................................. II 目錄 .................................................................................................................. III 1 緒論 ............................................................................................................... 1 課題設(shè)計原理及 要求 ........................................................................ 1 技術(shù)概況及發(fā)展趨勢 ........................................................................ 1 傳感器的技術(shù)性能 ...................................................................... 1 傳感器的發(fā)展趨勢 ...................................................................... 2 數(shù)字氣壓計系統(tǒng)的設(shè)計意義 ............................................................ 4 2 系統(tǒng)總體設(shè)計 .............................................................................................. 6 設(shè)計整體思想 .................................................................................... 6 系統(tǒng)總體框圖 .................................................................................... 6 系統(tǒng)各功能模塊的設(shè)計思想 ............................................................ 7 3 硬件電路設(shè)計 .............................................................................................. 8 數(shù)據(jù)采 集模塊 .................................................................................... 8 數(shù)據(jù)采集模塊的芯片選擇 .......................................................... 8 數(shù)據(jù)采集的仿真原理圖 .............................................................. 9 氣壓傳感器 MPX4115 的原理 .................................................... 10 數(shù)據(jù)轉(zhuǎn)換模塊 .................................................................................... 11 數(shù)據(jù)轉(zhuǎn)換芯片選擇 ...................................................................... 11 數(shù)據(jù)轉(zhuǎn)換電路部分電路原理圖 .................................................. 12 ADC0832 的原理 .......................................................................... 13 數(shù)據(jù)處理模塊 .................................................................................... 14 數(shù)據(jù)處理模塊的芯片選擇 .......................................................... 14 單片機部分的原理圖 .................................................................. 14 AT89C52 引腳及功能 ................................................................... 15 數(shù)據(jù)顯示模塊 .................................................................................... 18 顯示模塊的芯片選擇 .................................................................. 18 基于傳感器的智能壓力檢測系統(tǒng)設(shè)計 IV 顯示器 LCD 部分的原理圖 ........................................................ 19 LCD1602 原理 .............................................................................. 19 電源模塊、數(shù)據(jù)下載模塊及報警模塊 ............................................ 22 4 仿真工具介紹 .............................................................................................. 24 單片機 C 語言 .................................................................................... 24 Keil 軟件介紹 ..................................................................................... 25 Proteus 軟件介紹 ................................................................................ 25 Protel99 介紹 ...................................................................................... 26 5 軟件系統(tǒng)設(shè)計 .............................................................................................. 28 程序流程圖 ........................................................................................ 28 氣壓值計算 ......................................................................................... 29 6 系統(tǒng)的調(diào)試與仿真 ...................................................................................... 30 系統(tǒng)仿真電路圖 ................................................................................ 30 系統(tǒng)仿真結(jié)果 .................................................................................... 32 總結(jié) .................................................................................................................. 35 致謝 .................................................................................................................. 36 參考文獻 ...................................