基于单片机的超短波理疗仪电路系统设计

Design of Circuit System of Ultrashort Wave Physiotherapy Instrument Based on Microcontroller Unit

为实现超短波理疗仪的数字化和自动化控制,设计了一种可自动调谐超短波理疗仪电路系统。该系统通过推免式自激振荡电路产生频率为40.68MHz的超短波,采用以单片机为主控芯片的步进式调谐法控制可变电容矩阵进行输出功率电路自动调谐。系统包括电源模块、超短波发生模块、单片机控制模块、输入显示模块、自动调谐模块、超短波输出模块,通过单片机实现数字化控制。整机上电测试显示该系统能够实现治疗强度、治疗时间的数字化显示,产生频率为40.68MHz的稳定超短波,产生22~48℃的热效应,实现仪器的数字化和自动化控制。

In order to realize the digitization and automation control of ultrashort wave fields,this paper designs a digital control can be automatic tuning of ultrashort wave fields circuit system,the system by pushing from type of self-excited oscillation circuit ultrashort wave frequency is 40.68MHz,based on microcontroller unit as main control chip step-type tuning method control variable capacitance matrix power output circuit automatic tuning.The system mainly includes the power module,the ultrashort wave generation module,the microcontroller unit control module,the input display module,the automatic tuning module,the ultrashort wave output module,and the digital control is realized by the microcontroller unit.After the whole machine is powered on for testing,it can realize the digital display of treatment intensity and treatment time,produce a stable frequency of 40.68MHz ultrashort wave,can produce 22~48℃thermal effect,and realize the digitization and automation of the instrument.