基于MPX系列压力传感器的智能水位实时检测系统-谢少伟

基于MPX系列压力传感器的智能水位实时检测系统*谢少伟刘吉来(,310018):MPX,MotorolaMPX10DP/MPX2100DP.:MPX;;;A/D;:TH815:A:1008-293X(2007)10-0058-05,.,,,.MotorolaX,,,,A/D,,,.MPX10DP/MPX2100DP;;;;.1MPX10D/,.,.,,,1.,'R,'R,$R,'R=KP,Uo=E('R/R)=(EK/R)P,P,,.,.MotorolaX.2,,MotorolaX,,X,X.X,,,MotorolaMPX,,,,.X,1.112122MPX10DP,:1(Offset):20mV;2:3.5mV/kPa;2710200712JOURNALOFSHAOXINGUNIVERSITYVol.27No.10Dec.2007*:2007-11-19:(1965-),,,,:.3:?1.0%F.S;4:-40e~+125e;5;MPX2100DP,:1,(Offset),?1mV;2:0.4mV/kPa;3:?0.25%F.S;4,-40e~+125e,;,MPX10DP,MPX2100DP,.1X(mV)(V)(m)MPX10D(DP)10KPa20)35)50DC3)61MPX50D(DP)50KPa45)60)90DC3)65MPX100DP100KPa45)60)90DC3)610MPX5010D(DP)10KPa200-4700DC51MPX2100DP(DP)100KPa25DC10)1610MPX2200D(DP)200KPa25DC10)16202,3,,..h0:p1=Qgh1:h=h0+h1=h0+p1/(Qg)p,g.1.13234,MPX,,A/D.VDD2,MPXHT7130-13V.HT7130-1COMS,24V,3.0V,30mA,COMS(100mV)(3LA).6V,6,,3V,.OP07,,,.AR2,AR1AR3,R5=R7,R6=R8,5910:MPX,GAIN=R6/R5.45.P87LPC764,P87LPC76XPHILIPS51LPCOTP,80C51MCUWDTI2CA/DD/APWM.,,.P87LPC764:1:2.7-6.0V.2,1uA,,.P87LPC764,A/DA/DTLC8031CP,1/256..142PCF8563,:0.25LA,:1.0~5.5V,I2C.Flash:MM36SB020.MM36SB020MEGAWINe-Flash.2Mbits,52048,128.128.2/3.:4mA/,1mA/,0.5LAStandby,:2.4V~3.6V.,HT7136-1COMS,6V3.6VMM36SB020.60()27RS232....,.5.,,,6.6VDD1,VDD2.PCF85638,8,(4096,64,1,1/60Hz),.8,,(/INT),,P87LPC764,6T15551,VDD2,.1/60Hz(),256.4,4,,.5.,,,,,10,,.7.6:.:A/D.,,,A/D,,,MM36SB020.,,,.,,2MPX10D,,1%,,,.,10,,.,,,A/D,,,MM36SB020.,7.,,.6110:MPX2MPX10D(mm)MPX10D(mV)(mm)MPX10D(mV)10076.55053.39071.94048.68067.83044.07062.81034.96058.0031.87,.,MPX,,.:1Motorola,Inc.MPX10/DPDataSheet1Z2.2001.2Motorola,Inc.MPX2100/DPDataSheet1Z2.2002.3蔡勇#周明耀.灌区量水实用技术指南1M2.北京:中国水利水电出版社.2001.4周航慈#周立功等.PHILIPS51LPC系列单片机机原理及应用设计1M2.北京:北京航空航天大学出版社.2001.(74)62()27..4,,.:1GB50009-2001,建筑结构荷载规范1S2.北京:中国建筑工业出版社,2002.2杨福源,冯国明,叶见曙.结构设计原理计算示例1M2.北京:人民交通出版社,1994.3GB50010-2002,混凝土结构设计规范1S2.北京:人民交通出版社,2002.4叶列平.混凝土结构1M2.北京:清华大学出版社,2003.5GB/T50344-2004,建筑结构检测技术标准1S2.北京:人民交通出版社,2004.TestandEmulationAnalysisofCast-in-PlaceConcrete.sBearingCapabilityJinHongwu1JinQi1ZhaoQin2(1.ShaoxingShanheConstructionEngineeringCO.,LTD2.ShaoxingInstituteofCityBuildingDesign&CO.,LTD,Shaoxing,Zhejiang312000)Abstract:Takesomeprojectasanexample,carryonanalysisforadoptedthecoredslab,providetheexperiencetothesameprojectconstruction.Keywords:cast-in-placeconcrete;coredslab;bearingtest;emulationanalysis(62)AMPX-Series-Pressure-Sensor-BasedIntelligentRealTimeWaterLevelDetectionSystemXieShaoweiLiuJimi(ZhejiangJuniorCollegeofHydraulicsandElectricity,Hangzhou,Zhejiang310018)Abstract:WeintroducedthecompositionofaMPX-pressure-sensor-basedintelligentrealtimewaterleveldetec-tionsystem.WefocusedourparticularattentiontoMotorola.sMPX10/MPX2100DPsensors,theirprinciples,sensorysignalmodification,powermanagementcircuit,waterleveldetectionmechanism,signalcollection,measurementsystem,andnonlinearerrorcorrectioninthesensor.Keywords:MPX;pressuresensor;signalmodification,A/DSwitch;waterlevelrealtimedetection74()27