Research And Designing Of Control Circuit Of Ultrasonic Treatment Equipment

Ultrasonic is a kind of mechanical wave that frequency is upper 20KHz. Ultrasonic may be generated by many ultrasonic transducers. The iatrical ultrasonic is about 1-15MHz at present, which generated by piezoelectricity crystal at the function of alternant electric field. Appropriate ultrasonic irradiation will accelerate tissue growth, have the function of healing and adjustment. For example, ultrasonic irradiate heart by 0.5-lW/cm2 will heal coronary heart disease; irradiate eyeground by 0.5 W/cm2 will accelerate hemostasia.Ultrasonic treatment begins at 1930s. In China, the aspect begins slowly, only a few hospitals apply this technique at 1950s, but along with the rapid development, the applications are more and more. In domestic, Chongqing Haifu(HlFU) Technology Co., Ltd is the best at the field of ultrasonic treatment, it's products of Haifu Focused Ultrasound Tumor Therapeutic System and Haifu CZF Ultrasound Gynecology Diseases Therapeutic Device is in the highest flight internationally. These products are with good graces by many super hospitals, high precision, strong function and well-treated effect are the main reasons. But those don't fit therapy in families, because it's big, expensive and the manipulation is very complex. The equipment for cure in the family are coarse, the degree of automation is low and can't ensure security.Therefore, we need develop a kind of ultrasonic treatment equipment which of making a kind of overseas equipment use for reference. The equipment use MCU AT89C51 as core, control treatment mode and dosage accurately for the purpose of miniaturization and intelligent.The full paper is divided into five chapters. Chapter one introduces the ultrasonic iatrology, including the summarization of ultrasonic and the mechanism of treatment etc. Chapter two introduces the ultrasonic transducers that are important in the field of ultrasonic treatment. The main index and sort of the ultrasonic transducers are listed. Chapter three introduces the design and realization of sine wave coming into being in high frequency. On base of listing the technical index of switch power supply, basal principle and circuit, thechapter expounds the scheme and comes into being. Chapter four is a main chapter, that expands the design and realization of control cell, lists the circuits and programs. Chapter five summarizes the work the paper did and lists the deficiency.The ultrasonic treatment equipment the paper researched has come into being by debugging and modification again and again. But with regard to the whole field of ultrasonic treatment, lots of endeavor is need.