文章摘要

文章信息/Info

Title:: Design and application of middle and low frequency electrical stimulation therapeutic instrument

作者:: 吴义才1; 戴季高1; 曾俊炜1; 蒋丽媛1; 王玺羽1; 赵艳梅1; 邹任玲1△; 徐秀林1; 胡秀枋1; 尹学志2; 1.上海理工大学健康科学与工程学院，上海 200093；2.上海贝瑞电子科技有限公司，上海 201100

Author(s):: WU Yicai1; DAI Jigao1; ZENG Junwei1; JIANG Liyuan1; WANG Xiyu1; ZHAO Yanmei1; ZOU Renling1; XU Xiulin; HU Xiufang1; YIN Xuezhi2; 1.School of Health Science and Engineering，University of Shanghai for Science and Technology,Shanghai 20093,China;2.Shanghai Berry Electronic Technology,Shanghai 201100

Keywords:: Modulated wave; Multi-waveform; Constant current source; Multi-frequency; Real-time; Current feedback

摘要:: 本研究设计了一种多通道、多波形中低频电刺激仪。该电刺激仪通过调制模块和恒流源功率放大模块实现稳定输出电刺激，并由QT编写的上位机显示各通道、各波形参数、变压器隔离和电流反馈，保障人体安全。不同于常规电刺激仪的H桥电路生成脉冲，该电刺激仪使用双运放恒流源加功率放大电路作为电刺激输出。通过主控板STM32输出各通道信号，实现多波形的电刺激输出，并且实现对频率、电流幅值等参数的实时调节。初步的模拟电阻与人体实验表明，该电刺激仪刺激效果良好，对临床电刺激康复治疗具有一定意义。

Abstract:: We designed a multi-channel and multi-waveform medium and low frequency electrical stimulator.The stable output of electrical stimulation was realized through the modulation module and the constant current source power amplifier module. The upper computer compiled by QT displayed the waveform parameters of each channel, transformer isolation and current feedback to ensure human safety.Different from the H-bridge circuit of the conventional electrical stimulator to generate pulses, we used a double operational amplifier constant current source and a power amplifier circuit as the electrical stimulation output.The multi-waveform electrical stimulation output could be adjusted through the main control board STM32, and the real-time adjustment of various parameters such as frequency, current amplitude and so on could be realized.Preliminary simulated resistance and human experiments showed that the stimulation effect of the electric stimulator was good.It has a certain significance for clinical electrical stimulation rehabilitation therapy.