基于CPLD技術(shù)的自然伽馬能譜測(cè)井儀控制系統(tǒng)的設(shè)計(jì).pdf

1、天津大學(xué)碩士學(xué)位論文基于CPLD技術(shù)的自然伽馬能譜測(cè)井儀控制系統(tǒng)的設(shè)計(jì)姓名：王潔冰申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：計(jì)算機(jī)應(yīng)用指導(dǎo)教師：車(chē)明李曉明20080401ABSTRACTNaturegammaraypedigreepetroleumwellloggingisallinstrumentwhichcanmeasurethegrosscontentofnaturalradioactiveelementandthepercentofsuchele

2、mentasuraniumthoriumpotassiuminthestratumThecontentofuraniumthoriumpotassiumis99％ofthewholenaturalradioactiveelement，whileothersisless1％andcallbeignoredAccordingtothechemicalpropertiesofuraniumthoriumandpotassium，theexis

3、tinglawCanbeobtainedbyanalyzingtheinformationfromthenaturegammaraypedigreepetroleumwellloggingandothercorrelativedataUsingthislawwecanidentifyigneousrockdistinguishtheshale，determinethecontentofclayandplotoutthestoragela

4、yerThesedimentsurroundingsCanbeestimatedbycomparisonthepenetrabilityandthroughputofstoragelayerandthenthegeologicalprobleminpetroleumexploitationCanbesolved。Naturegammaraypedigreepetroleumwellloggingismainlycomposedofcry

5、stal，photomultipliertube，preamplifierhighvoltagemultiplierandsignalprocessor50uCiofAm241isrie丑atneartothecrystalThesignalprocessoriscomposedofthepartofmeasurementandpedigreestabilization，plugsThedesignofthecircuitinclude

6、thedesignofcircuitsignalamplifiercomparablelogicalcircuit，pedigreesignalcomparablelogicalcircuit，highvoltagecircuitcontrolandpedigreeerrorcontrol，transmissionofenergywindow’SrateandthecircuitofplugsInthisdissertation，MAX

7、PLUSIIdevelopmentsystem，whichwasdevelopedbyALTERAcompanyinUS，wasusedasdesignenvironmentMAXPLUSIIdevelopmentsystemisanintegrative，wieldyandprogrammabledesignenvironmentThedesigninthisdissertationwasbasedontheexistinginstr

8、ument，whichenteredthemarketmorethan20yearsagoandbeenacceptedbytheconsumersandwhichhadmatureandreliablecircuitdesignSOtheimprovementofthedesignwasonthebasicoftheexistingdesignThedesignprincipleandthefunctionofthecircuitwa

9、sthesame，butfunctionwasrealizedbyusingadvancedtechnologyandtheleveloftheinstrumentwasheightenedInthisdissertation，thedesign，improvementanddebuggingofthehardwarecircuitwasfinishedandthecorrespondingexperimenthadtestifiedt