Development of embedded high pressure pipe pressure monitoring device

[[abstract]]工業時代的崛起，管道工程系統為現在重工業不可或缺的系統，隨著時代的進步，管道系統也被充分的運用在各種環境。前段時間於2014年對高雄衝擊甚大的氣爆事件，喚醒社會大眾及相關使用管道企業開始著重於管道系統監控的議題，而管道系統這些多元且複雜的系統，卻也已普遍化的潛藏在我們生活週遭環境，然而受限於管路安置的距離、位置、環境和價格等因素，在相關的監測技術上，仍有很大的研究空間，但工業安全不應產品價格昂貴及技術缺口被犧牲，更何況是工業的災害是發生在非工廠直接受益的百姓居民身上。本研究提出一個非直接接觸管件內部運輸的物質的嵌入式高壓管件壓力監測裝置開發，且為了能更完善整個實驗專題內容，運用了相關壓力監測元件、應變規、單板電腦及三通之相關專業參考文件來補充、佐證甚至運用於整個實際實驗過程。實驗過程便將這些獨立元件進行組合應用來進行檢測，在實驗期間更遇到相關應變變化量較為微小而單板電腦擷取訊號無法處理的限制問題，也因為如此我們最後加入了高階ADC晶片來進行擷取問題的改善。這樣的實驗任務複雜的地方在於，應變片的電阻變化很微小，必須有適當的電路檢測其微小的變化且信號的放大處理也是一個相當重要的課題。故本論文主要在開發一個嵌入式高壓管件壓力裝置，主要運用應變規可以應用於不同場合測量物體應變的特性，搭配可通過添置選定功能的單板電腦加上ADC及WIFI模組來組成，以有效且合理成本的方式在輸送管道進行多點式的壓力監控；先以ANSYS有限元素分析法對載具進行模擬分析，在實驗參數一我們可借由單片式1/4橋服貼在載具上，加上1非動作的1/4橋補償電阻器及1/2橋補償電阻器來完成惠斯通電橋，透過NI9237模組取得應變值與分析資料作比對，驗證實驗方法的可行性；再來進行應變規加單板電腦所組成的模組訊號透過16~24bit(ADC)解析、透過WIFI傳送到電腦或雲端以達到即時監控及物聯網的效果。[[abstract]]Pipeingengineeringsystemisanindispensablesysteminheavyindustry,whentheriseoftheindustrialage,andthepipingsystemsarealsobeingusedinavarietyofenvironmentswiththeprogressofthetimes.Kaohsiunggasexplosioneventwasabighitin2014,andthisincidentwasremindedthatmasssocietyandrelatedusingpipelinecompaniesbegantofocusontheissueofpipelinesystemmonitoring.Thesediverseandcomplexpipelinesarequitecommonintheenvironmentofourlives,buttheindustrialsafetyshouldnotbesacrificed,andthecauseisexpensiveandtechnicallyinadequatebecausethefactorofpipelineplacementdistance,location,environmentandpricearelimitedintherelevantmonitoringtechnology.Mostimportantly,theseindustrialaccidentsoccuronresidentswholiveintheneighborhood,nottheemployeesofthefactory.Thisstudybeproposedadevelopmentofembeddedhighpressurepipepressuremonitoringdevicefornon-directcontactthesubstancethatistransportedinsidethepipe,andinordertobetterimprovetheentireexperimentalcontentforcompletetheentireexperimentaltopiccontent,andthenrelatedprofessionalreferencedocumentsofrelevantpressuremonitoringcomponents,straingauge,singleboardcomputerandTeebeusedinthispaperandentireactualexperimentalprocess.Theseindependentelementsarecombinedforexperimentationintheexperimentalprocess.Duringtheexperiment,weencounteredtheproblemthatthestrainvaluecannotbereadbytheboardcomputer,sowejoinedthehighlevelADCChiptoimprovereadingproblems.Thisexperimentaltaskiscomplicatedbecausetheresistancechangeofthestraingaugeissmall,sothisisaveryimportantlessontoestablishappropriatecircuitstodetectminorchangesandsignalamplificationprocessing.Thecontentofthispaperisanembeddedhighpressurepipepressuredevice,andthatbedevelopedtomeasurethepropertiesoftheobjectstrainondifferentoccasionswithstraingauge,aselectedfunctionArduinoSBCandaddADC,andWIFImodule,andthenweusetheeffectiveandareasonablecostwayformulti-pointpressuremonitoringinthepipeline.First,weusetheANSYSFiniteelementanalysistoperformasimulationanalysisonpipefittings,forexampleweusesingleplateandaquarterofabridgeonthepipeintheexperimentalparameters1,andplus1anon-action1/4bridgecompensationresistoranda1/2bridgecompensationresistortocompletetheWheatstonebridge,andthenwethroughtheNI9237moduletoobtainthestrainvalueandanalysisdataforcomparisontoverifythefeasibilityoftheexperimentalmethod.Finally,thestraingaugeandsingle-boardcomputermodulearecomposedtoanalyzewith16~24bit(ADC),andwethroughWIFIsenttheinformationtothecomputerorthecloudtoachieveimmediatemonitoringandnetworkingeffects