超声骨密度测量系统地设计.pdf

issue,leadingtoenhancedbonefragilityandconsequentincreaseinfracturerisk。ItiSthoughtasthecurrentoneofthefivemajordiseasesWithhypertension,arteriosclerosis,diabetes,%~85%,(BUA),,wewilltalkabouttheconfigurationandfunctionofthesystemandgivethedetailedschemeofeachfunctionalmoduleinvolvingthefollowingelements:●Hardware:USBinterfacedesign,FPGAcontrolcircuitdesign,ADandDA,cachecircuitdesign,transmittingcircuitdesign,receivingcircuitdesign,powersupplydesign.●Software:USBfirmwaredesign,FPGAprogramdesign,)Changingthetraditionalultrasonicmeasurementofsinglepulsetransmitting,)WiththecontrolofFPGA,)Inthereceivingcircuit,—)HarmonizingUSB,,DA,FIFO,transmittingcircuit,theFPGAimprovesthestabilityofthesystem’pleted,,,onthebaseoftheworkoftheauthor,:BroadbandUltrasoundAaenuation(BUA),thebeamcircuit,broadbandamplifier,thereceivecircuit,thelOWnoisefilter,themaincircuit,FPGA(FieldProgrammableGatesArray)