摘要
设计了一种新型电脉冲治疗仪,旨在帮助偏瘫患者恢复行走能力。以FPGA为控制核心,通过放大电路和滤波电路对电极拾取的人体健肢表面肌电信号进行调理,由AD7689对调理信号进行采集,并通过USB2.0接口将数据传输到PC端。根据PC端所得到的各肌肉表面肌电信号阈值电压以及各肌肉之间收缩和舒张的先后时序关系,人为地通过串口对FPGA发送相应的参数指令。FPGA解析指令后,控制多路电脉冲输出电路输出相应的电脉冲作用于患肢的相关肌群上,刺激肌群按照参数指定的强度和时序关系进行收缩,从而使患者做出行走动作。
A new electric stimulation pulse therapy apparatus has been designed to help hemispheric patients to recover their walking ability. FPGA is used as control core chip. After amplifying and filtering, the surface EMG signals obtained from human limb are transferred to AD7689 to actualize A/D convert and transmit the data to PC by USB2.0. According to threshold voltage of the surface EMG signals and the sequential timing relationship of different muscles when they are contracted or relaxed, the corresponding parameter will be sent to FPGA through serial port. According to the parameter, FPGA generate several electric stimulation pulse through output circuits which can be used to stimulate the muscle group of affected limb. According to the intensity and timing relationship specified by the instructions, so that the patients can make walking action.
作者
陈小宇
谢小文
Chen Xiaoyu;Xie Xiaowen(College of Physical Science and Technology,Central China Normal University,Wuhan 430079,China)
出处
《电子测量技术》
2018年第18期15-21,共7页
Electronic Measurement Technology
作者简介
陈小宇，1972年出生，工学博士、副教授、硕士生导师，主要研究方向为康复仪器研发，信号与信息处理，嵌入式系统及应用。E—mail：chenxy@mail．ccnu．edu．cn;谢小文，1992年出生，硕士研究生，主要研究方向为嵌入式技术。E-mail：xxwdx1105@163．com
