摘要
论文详细探讨了基于ARM9和LabVIEW的多路神经信号采集系统中8通道模拟前端电路的研制。为与本系统选用的S3C2410内置的ADC可靠配接,根据电路理论中的叠加原理,特别自行设计给出了双极性转单极性并线性限幅的完整电路,并深入分析了其设计思想。对研制的电路进行了理论分析推算和电路仿真,并用选购的国外脑神经信号仿真发生器的波形信号进行了相关实验。相应电路及设计技术对应用嵌入式系统技术的多路微弱信号采集等的电路研制有实际应用参考价值。
This paper discusses the research on AFE in ARM9 and LabVIEW based multi-channel neural signal acquisition system in detail. According to the superposition principle of circuit theory, the circuits, which can transform the signal from bipolar to monopolar and linearly restrict its amplitude for matching the ADC of S3C2410, is specifically designed and fully given. Its design idea is also deeply analyzed. With the signal of imported cranial nerve signal simulation generator, the related experiment has been conducted on the developed circuit, which the theoretical analysis, calculation and circuit simulation is also made. The designed circuit and technology are of practical reference value for the research on circuit of multi-channel feeble signal acquisition based on embedded system technology.
出处
《国外电子测量技术》
2008年第2期26-29,共4页
Foreign Electronic Measurement Technology
