ametersAlotofspeedmeasureme
tusi
gphotoelectricswitchspeedmeasureme
tismorecommo
lyusedmeasureme
tmethodDuri
gthesystemdesig
wehave51si
glechipmicrocomputerasthecoreco
trolu
ittoi
fraredo
thetubeorlightelectricityelectricitylightemitti
gdiodeforthese
sorphotoelectricse
sorthroughrealtimeacquisitio
a
dprocessi
gmotorspeeda
ddisplaydesig
amotorspeedmeasureme
tsystema
dstudythemeasureme
taccuracymeasuri
gra
gea
drespo
sespeedprogrammi
gi
itializatio
partisdividedi
tomodulespulsecou
ti
gmoduletimi
gmoduleparameteradjustme
tmodulea
ddisplaymoduleFi
allythepilottestbythecorrespo
di
gtech
icalparametersofthespeedmeasureme
tsystemerrorisa
alyzedtherequireme
tsofthesystemisstablea
dreliablea
tii
terfere
ceabilitylowcosta
deasytouse
KeywordsComputerapplicatio
s，Si
glechipmicrocomputer，DCmotor，Speed
f目
录
1绪论111题目背景及目的112题目研究方法12系统设计基础知识221直流电机的基本知识2211212213214直流电机的工作原理2电机的起／停控制3电机的方向控制3电机的速度控制4
2251单片机的基础知识53系统总体方案设计1331系统分析13311312313电机转速的测量13电机转速的处理15电机转速的显示15
32设计思路和方案1533系统构成r