摘要
本文针对低频治疗仪波形产生和输出电路复杂的研究现状,提出了采用直接数字合成思路,通过对双单片机处理器进行相应的软件编程,实现多种治疗仪波形的数字合成和双通道幅频可调的双极性信号,经功率放大和脉冲变压器隔离后输出.新型的治疗仪,功能完备、调整灵活、电路简单、功耗低、可靠性高.
This paper propose a direct digital synthesis method to improve the design of the waveform out put circuit of electro-acupuncture equipment in order to simplify the complexity the of the output circuit.This method combined the technology of double single-chip microprocessor with a variety of software programming to obtain the waveform synthesis and double amplitude frequency adjustable for the bipolar output signal.The output signal was obtained by the power amplifier and pulse transformer isolation. The amplitude and frequency of four channels bipolar output with a variety of waveform can be adjusted. The improved electro - acupuncture equipment is with high performance, complete functions, and is flexible to adjust and easy to operate.
出处
《天津理工大学学报》
2009年第6期68-70,共3页
Journal of Tianjin University of Technology
关键词
低频治疗仪
幅频调制
单片机处理器
功率放大
频率合成器
low frequency instrument
amplitude and frequency modulation
MCU
power amplifier
frequency synthesis
