[1]仓臣,丁孝宇,郑政.用于外周神经的干涉电流刺激器设计[J].中国医学物理学杂志,2020,37(8):1062-1067.[doi:DOI:10.3969/j.issn.1005-202X.2020.08.023]
 CANG Chen,DING Xiaoyu,ZHENG Zheng.Design of interference current stimulator for peripheral nerve[J].Chinese Journal of Medical Physics,2020,37(8):1062-1067.[doi:DOI:10.3969/j.issn.1005-202X.2020.08.023]
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用于外周神经的干涉电流刺激器设计()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
37
期数:
2020年第8期
页码:
1062-1067
栏目:
医学信号处理与医学仪器
出版日期:
2020-08-27

文章信息/Info

Title:
Design of interference current stimulator for peripheral nerve
文章编号:
1005-202X(2020)08-1062-06
作者:
仓臣丁孝宇郑政
上海理工大学医疗器械与食品学院,上海 200093
Author(s):
CANG Chen DING Xiaoyu ZHENG Zheng
School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
关键词:
电刺激器神经刺激干涉电流FPGA
Keywords:
Keywords: electric stimulator nerve stimulation interference current FPGA
分类号:
R318.6
DOI:
DOI:10.3969/j.issn.1005-202X.2020.08.023
文献标志码:
A
摘要:
设计了一种用于外周神经电刺激的干涉电流刺激器。该刺激器为两路电流输出,可以产生4种波形,每种波形的频率、幅度等参数可在上位机进行设置,频率分辨率为0.2 Hz,幅度分辨率为0.01 mA,时间分辨率为0.1 μs。该刺激器的特点在于可在刺激强度一定的条件下连续改变电流比,或在电流比一定的情况下连续改变刺激强度。上位机采用LabVIEW开发,下位机采用FPGA对3片DAC进行控制,DAC产生的波形信号经过隔离恒流源电路后施加到负载。经过测试,刺激器能够准确产生4种波形,电流偏差在2.6%以内,恒流效果良好。该刺激器体积小,操作简单,产生波形稳定,可以用于无损选择电刺激研究。
Abstract:
Abstract: An interference current stimulator for peripheral nerve electrical stimulation is designed. The stimulator which is a two-way current output can generate 4 kinds of waveforms. The frequency, amplitude and other parameters of each waveform can be set in the upper computer. The frequency resolution, amplitude resolution and time resolution are 0.2 Hz, 0.01 mA and 0.1 μs, respectively. The stimulator is characterized in that the current ratio can be continuously changed under the condition that the stimulation intensity is constant, or that the stimulation intensity can be continuously changed when the current ratio is constant. The upper computer is developed by LabVIEW and the lower computer uses FPGA to control 3 DAC. The waveform signal generated by the DAC is applied to the load after being isolated by the constant current source circuit. After testing, the stimulator can accurately generate 4 kinds of waveforms, with a current deviation within 2.6% and good constant current characteristics. The stimulator which is small in size, simple in operation and stable in waveform generation can be used for the non-destructive electrical stimulation studies.

备注/Memo

备注/Memo:
【收稿日期】2020-03-05 【作者简介】仓臣,硕士研究生,研究方向:生物医学电子学,E-mail:1019352682@qq.com;丁孝宇,硕士研究生,研究方向:生物医学电子学,E-mail: 1324830818@qq.com 【通信作者】郑政,研究员,研究方向:医学超声、生物医学电子学,E-mail: 2697818504@qq.com
更新日期/Last Update: 2020-08-27