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1、青島大學(xué)碩士學(xué)位論文在線多參數(shù)水質(zhì)監(jiān)測系統(tǒng)的研究姓名:張立寶申請學(xué)位級別:碩士專業(yè):機(jī)械電子工程指導(dǎo)教師:張鳳生;楊杰20070602摘要水質(zhì)參數(shù)監(jiān)測是工廠化水產(chǎn)養(yǎng)殖的重要組成部分,是工廠化養(yǎng)殖向自動化,大規(guī)模、高產(chǎn)量和高質(zhì)量發(fā)展的關(guān)鍵環(huán)節(jié)。本文針對我國工廠化養(yǎng)殖水質(zhì)監(jiān)測手段落后、自動化水平低的現(xiàn)狀,研制了一套適合國情的在線多參數(shù)水質(zhì)監(jiān)測系統(tǒng)。它可對水溫、酸堿度(pH值)、溶解氧含量、鹽度四個水質(zhì)參數(shù)進(jìn)行連續(xù)在線監(jiān)測。主要研究成果如下:第一,基于計算機(jī)網(wǎng)絡(luò)技術(shù)與傳感技術(shù),建立了一種全信息化的工廠化養(yǎng)殖在線監(jiān)測模式,它采用分布式的兩級微計算機(jī)控制系統(tǒng)結(jié)構(gòu)。第二。通過分析水質(zhì)各參數(shù)
2、與魚類生長之間的關(guān)系和水質(zhì)監(jiān)測的環(huán)境特殊性。給出了測量傳感器的合理選擇。第三,下位機(jī)系統(tǒng)由AT89S52單片機(jī)和其外圍擴(kuò)展電路組成,包括ROM、RAM、鍵盤輸入、液晶顯示、數(shù)據(jù)采集、超限報警和數(shù)據(jù)通信等功能。系統(tǒng)的抗干擾能力較強,并設(shè)有RAM掉電保護(hù)功能。將多臺下位機(jī)系統(tǒng)通過RS485總線與上位機(jī)相連,組成監(jiān)測系統(tǒng)。第四,應(yīng)用VisualC++和C51分別對上下位機(jī)進(jìn)行軟件編程,設(shè)計了一套多功能、人機(jī)界面靈活的監(jiān)測程序,包括鍵盤掃描模塊、液晶顯示模塊、數(shù)據(jù)采集模塊、數(shù)據(jù)通信模塊、數(shù)據(jù)管理模塊、在線監(jiān)測模塊和參數(shù)設(shè)置模塊。最后,對所研制的在線多參數(shù)水質(zhì)監(jiān)測系統(tǒng)進(jìn)行的測試,驗證了上
3、述設(shè)計和研究成果的可行性和在工廠化水產(chǎn)養(yǎng)殖中的應(yīng)用價值。關(guān)鍵詞:工廠化水產(chǎn)養(yǎng)殖;水質(zhì)監(jiān)測;單片機(jī);數(shù)據(jù)采集;數(shù)據(jù)通信AbstractWaterqualitymonitoringasallhnportantpartoffactoryaqu∞llltIlreisthekeyforfactoryaquaculturetodeveloptowardsautomation,large—scale,high-yieldandhigh-quality.Aimingatimprovingthelaggingmethodandthelowautomationlevelof0111"country
4、’Sfactoryaqu∞Illtll]障,anonlinemulti-parameterwaterqualitymonitoringsystemisdevelopedinthisdissertation,whichGancontinuouslymonitorsuchwaterqualityparame讎鷸temperature,pH,dissolvedoxygenandsalinity0nline.Themainresearchresultsarcasfollows:Firstly,basedoncomputernetworkandserksortechnology,anon
5、-lineandfullyinformationizedmonitoringmodeoffactoryaquacultureisbuiltup,andatwo-levelmonitoringsystemarchitecturebaseddistributedcontrolmodeisdeveloped.Secondly,byanalyzingtheenvironmentalparticularityofwaterqualitymonitoringandtherelationshipbetweenwaterqualityparametersandthegrowthoffish,r
6、easonableselectionforchoosingSensorsisspecified.Thirdly,thelowercomputersystemconsistsofsinglechipcomputerAT89S52andperipheralinterfacecircuitsthatincludeRAM,ROM,keyboard,liquidcrystaldisplay,dataacquisition,warninganddatacommunication.Thesystemhasstronganti-interferenceperformanceandpowerfa
7、lltureprotectioncircuitforRAM.Severallowercomputersarelinkedt0oneuppercomputerbyRS485bus,thusthemonitoringsystemiscomposed.Fourthly,amultifuncfionalandflexiblemonitoringprogramforthismonitoringsystemisdevelopedbyuseofVisualC++andC51foruppercomputer