智能人体电子秤的系统设计

:2007-10:(1964),,,,,(,223001):AT89C52,,,:;;:TM930:B:1006-2394(2008)07-0011-02DesignoftheIntelligentHumanBodyElectronic2weighingSystemZHANGQing2chun,YULan(ElectronicInformationEngineeringDepartment,HuaiyinInstituteofTechnology,Huaipan223001,China)Abstract:Thedesignmethodofintelligenthumanbodyelectronic2weighingsystemisintroducedinthispaper.ThesystemismainlycontrolledbyAT89C52.Thehardwareandsoftwaredesignaredescribedindetail.Thesystemcandis2playthehumanbodyweight,thefatandthininformationandthetime.Thefunctionofthesystemiscompleteanditcanbeusedwidely.Keywords:microcontroller;sensor;LCD1LCD,,A/D,,1122.1TJH-2C,,,,,,,TJH-2C,200kg,,ADC,3272.2,,,,,K=V0V2-V1=-R5R41+R1+R3R2,R2,OP-07,,,,,,,1120087,RC15k,0.1FRC100k,0.1F222.3A/DADC0809A/DADC080933A/DADC08098,A/D,,IN0,ADDA,ADDB,ADDCALERXD,ENABLE(OE)RD,STARTTXD,P0,ALE,START,,A/D,OE,P0,A/D4GDM1602A2.4GDM1602A,,,4HD47780,16,RSR/WEP3.4P3.5P3.6;VSSVDDV0,P11602A,16LCD,+5V10k,V0,,DB0DB7P1.0P1.7,,,,,,,DB7,DB71,,DB7052.5,,3:,,A/D54,,,,,(14)21200873,,A,B0,dir1;A,B1,dir032.2Z,,Z,TMS320LF2812QEP,AB,4,ABC,CAB,C4AB5,,nclr,,1s,coun,coun8,,coun16,32coun32,1073741824,5FPGACVerilog:moduleqep(A,B,coun,c,nclr);inputA,B,nclr;outputc;output[8:1]coun;reg[8:1]coun;initialcoun=0;assignc=A^B;always@(posedgecornegedgenclr)beginif(!nclr)coun=0;elsecoun=coun+1;endendmodule:3FPGA6,FPGAAB,Z,dircoun(8)MCUdircoun,MCU,PWM64FPGA,,,:[1],.DSPSMT[J].,2006,(12).[2]..[M].:,2004.()(12),,5AT89C52LCD,,,,,,,:[1].[M].:,2002.[2].[M].:,2002.()4120087