| 基于嵌入式的多路肌电信号采集系统的设计 |
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| 引用本文： | 王梦,葛斌,朱政康,师岩琳.基于嵌入式的多路肌电信号采集系统的设计[J].生物医学工程研究,2017(1):38-42. |
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| 作者姓名： | 王梦 葛斌 朱政康 师岩琳 |
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| 作者单位： | 上海理工大学医疗器械与食品学院,上海,200093 |
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| 摘 要： | 采用直接内存存取(direct memory access,DMA)和双口随机存取存储器(dual-port random access memory,dual-port RAM)相结合的方式设计了基于嵌入式的多路肌电信号采集系统。该系统由现场可编程门阵列(field-programmable gate array,FPGA)控制模数转换器(ADC)器件的采样时序;ARM作为主控器件采用DMA方式的数据采集机制,实现了上下位机的高速通信。本研究给出了数据采集接口设计方案,以及Linux操作系统下的DMA驱动程序和控制指令。实验表明该系统在采集肌电信息的同时对肌电信息进行算法处理并实时传输,明显提升了多路肌电信号采集系统的性能。
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| 关 键 词： | 直接内存存取 双口随机存取存储器 实时 肌电信号 |
Design of Multi-channel Electromyographic Signal Acquisition System based on Embedded Technology |
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| WANG Meng,GE Bin,ZHU Zhengkang,SHI Yanlin.Design of Multi-channel Electromyographic Signal Acquisition System based on Embedded Technology[J].Journal Of Blomedical Englneerlng Research,2017(1):38-42. |
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| Authors: | WANG Meng GE Bin ZHU Zhengkang SHI Yanlin |
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| Abstract: | By adopting the combination of DMA and dual port RAM, we designed a multi-channel electromyographic signal acquisition system based on embedded technology.The sampling sequence of ADC device was controlled by FPGA;As the master device, ARM implementsed the high-speed communication between the up and down machine by using DMA.The paper presentsed a data acquisition interface design scheme, and the DMA driver under Linux and control instruction.Experiment shows that the system can do data acquisition, algorithm processing and real-time transmission at the same time, greatly improves the performance of the multi-channel electromyographic signal acquisition system. |
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| Keywords: | Direct memory access Dual-port RAM Real-time Electromyographic signal |
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