大范圍液位實時跟蹤測量系統(tǒng).pdf

1、天津大學碩士學位論文大范圍液位實時跟蹤測量系統(tǒng)姓名：徐馳申請學位級別：碩士專業(yè)：儀器科學技術(shù)指導教師：孫長庫201112ABSTRACTInconsiderationoftidemeasuringinstrumentwhosecharacteristicarelargemeasuringscale，highaccuracyandfastermeasuringspeed，wedesignasetofheightmeasuringsyste

2、mbasedondigitalimageprocesstheoryThesystemmainlyincludesvisionmeasurementpart，trackingcontrolpartandtidalsimulationpartthreecomponentsTheexperimentalresultsshowthatthissystemhassuperiorperformanceoverthemeasurementoflarg

3、escalewaterlevelwithgoodrobustnessanditCOHldcompleteameasurementwithhighaccuracyThemainresearchcontentsinclude：1Analysisthecurrentsituationofthemeasuringmethodofliquidlevelathomeandabroad，elaboratingtheresearchbackground

4、andsignificanceofthelargerangeliquidlevelrealtimemeasuringsystemdesignedinthistopic2Completethelargerangeliquidlevelrealtimemeasuringsystemdesigning，throughprocessingtheimageofrulerandwatertubecapturedfromCCDcameratocomp

5、letethetaskofhighaccuracymeasurementThetechnicalindicatorsofthissystemare0～8mmeasuringrange，01mmmeasurementresolutionandlmmmeasurementprecision3Writethecommunicationprogramgettingthemeasuringresultoftheenvironmentsensors

6、includingtemperature—humiditysensorandatmosphericpressuresensorSOwecanmonitorthechangeoftheexperimentenvironment4Designthevisualdetectionpartofthismeasuringsystemandcompletethe3patternrecognitiontasksincludingtheidentifi

7、cationofrulerscribedlineandtheidentificationoftheliquidlevelpositionDuringtherecognitionofrulernumberweusetemplatematchingmethodwithrespecttotherobustnessofalgorithmandstabilityofthemeasuringsystemAstOtheidentificationof

8、rulerscribedlinewemakefulluseofthegrayfeaturesoftheimageandstructurecharacteristicsoftherulerWeusetheedgedetectionoperatortoidentifythepositionofliquidlevel5Inordertorealizethereal—timemeasurementoftheheightofliquidlevel