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Posture Characterization Based on Time and Frequency Domain Parameters for Erector Spine SEMG Signal

机译:基于时域和频域参数的竖脊肌肌电信号姿态表征

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This work is based on obtaining surface EMG signals from lower back muscles using a data logger by Pico Log technology. The electrodes used are Ag/AgCl and applied after a clean surface washing by alcohol of erector spine muscle for a subject under two posture conditions. The conditioning circuit used in this paper is selectively choosing the 20-500Hz dominant frequency range and 0.4 to 2.4 Volts in amplitude. The data on signals are transported onto a PC into Excel file for processing its FFT representative of the target posture condition. The bow condition shows four times larger in magnitude of FFT compared to that of standing condition over a similar frequency range of 50-220Hz. The utility of the conditioning circuit is justified by reducing the power frequency noise to negligible level. The utility of this research work has potential in clinical diagnostic applications.
机译:这项工作是基于使用Pico Log技术的数据记录仪从下背部肌肉获得表面肌电信号的基础。所用的电极为Ag / AgCl,并在用酒精对直立脊柱肌肉进行清洁的表面清洗后,在两种姿势条件下使用。本文中使用的调节电路是有选择地选择20-500Hz主频范围和0.4至2.4伏的幅度。信号上的数据被传输到PC上的Excel文件中,以处理代表目标姿势条件的FFT。在类似的50-220Hz频率范围内,船首条件显示的FFT幅度是站立状态的FFT的四倍。通过将电源频率噪声降低到可以忽略的水平来证明调节电路的实用性。这项研究工作的实用性在临床诊断应用中具有潜力。

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