文档介绍：硕士学位论文垒!!竺型一——————————————————————————一 Abstract With theadvantages of non-invasive and welleffect,Ultrasound physiotherapy has dra啪wide attention in thefieldofphysical on theadjuvanttherapy泐 persistent pain and diseases ofneck,shoulders,waist,legs,knees,J oints,as well as‘o dealwim themuscle-pain problem ofpeople under high pressure and oVerloading work, theintelligent dualfrequency ultrasoundphysiotherapy has been designed 1nthispapeL Aimed attheproblems about single output frequency andsmall radlatlon area of current ultraSound physiotherapy,the ultrasound physiotherapy designed inthispaper has output frequency,of which the center frequency are MHz and 3MHz separatelY,aIld the radiation area of3MHz output has been up thisultrasound physiotherapY, the ultrasonic excitation signal isgenerated by DDS (Direct Digital Frequency Svnthesizer) signal generator,which will be sent topower锄pIifier clrcult next aJld then wiU be converted intoultrasound finally by ultrasonic transducer·A打equency method ispresented inthispaper,which Can be used in ul仃asound physiotherapy印paratus against thefrequency thriftproblem during thephyslothempy process. Based on the fuzzy control theory,the voltage and cuHent slgnal ot the transdllCer pared,and thefrequency generated by theDDS signalgenerator wlu bead戤ed inreal-time,which ensures that theultrasound transducer isalways worklng on the resonallce STM32F 03RC chip has been used asthe core control吼lt to ensure the nonnal opermion ofallthe functional modules and the achleVement ot operational requirements,such as thefriendlyman-machine interface,。Ve卜temperature protecting and SO the prototype has been finished,and has achieved the desired technical parameters and thefunctionalrequirements afterdebugging· Key words:ultrasound physi。therapy,DDS signalgenerator,如zzyc。删,厅equency auto,tracking,dual frequency,ultrasonic transducer· 硕士学位论文智能双频超声理疗仪的设计与实现目录摘要?????????????????????????????????