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1、南京工程学院毕业设计文献资料翻译（原文及译文）原文名称：AMeasuringInstrumentForMultipointSoilTemperatureUnderground课题名称：多点测量地下温度的仪器设计学生姓名：赵锴学号：指导老师：李茂富所在院系：康尼学院专业名称：通信工程2011年3月南京AMeasuringInstrumentForMultipointSoilTemperatureUndergroundChengWang,ChunjiangZhao*,XiaojunQiao,ZhilongXuNationalEngineeringResearchCenterforIn
2、formationTechnologyinAgriculture,Beijing,P.R.China,Abstract：Anewmeasuringinstrumentfor10pointssoiltemperaturesin0–50centimetersdepthundergroundwasdesigned.SystemwasbasedonSiliconLaboratories’MCUC8051F310,singlechipdigitaltemperaturesensorDS18B20,andotherperipheralcircuits.Itwassimultaneouslya
3、bletomeasure,memoryanddisplay,andalsoconveydatatocomputerviaastandardRS232interface.Keywords:Multi-pointSoilTemperature;Portable;DS18B20;C8051F3101、IntroductionThetemperatureofsoilisavitalenvironmentalfactor,whichdirectlyinfluencestheactivityofmicroorganismsandthedecompositionoforganicsubstan
4、ces.Itcanaffectrootsabsorbingwaterandmineralelements.Italsoplaysanimportantroleinthegrowthrateandrangeofroots.Statistically,rootsofmostplantsarewithin50centimetersunderground,soitbecomesverysignificanttomeasurethesoiltemperatureofdifferentdepthinthislevel.TheSoilTemperatureMeasuringInstrument
5、susednowadaysmainlyfallintothreetypes,thefirsttypeisthemeasuretemperaturebymakinguseoftherelationshipbetweenthesoiltemperatureandthetemperature-sensitiveresistor.Beforeusingthissortofinstruments,thesystemparametersneedtobeadjusted;itisinconvenienttorepairwhenthesystemrunsintotrouble.Thesecond
6、typeisnon-contactSoilTemperatureMeasuringInstrumentwhichuseinfraredraytomeasuretemperature,thissortofinstrumentsisquiteexpensive.Thethirdtypeisinstrumentmeasuretemperaturebymakinguseofdigitalthermometer,atthepresenttime,thissortofinstrumentscanonlymeasureonepointofsoiltemperature,andthedataca
7、nnotbestoredortransmitted.Inall,theproductsmentionedabovecanhardlybecomepopularfortheyareeithercostlytooexpensiveorfunctionallytoosimple.Soanewkindofcheaperandmoreadvancedinstrumentisrequiredtobeinvented.2、MaterialsAndMethodThissystemappliest
