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首页> 外文会议>International Design Engineering Technical Conferences;Computers and Information in Engineering Conference;IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications >ELECTRODE-SKIN IMPEDANCE COMPONENT ESTIMATION IN THE TIME-DOMAIN
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ELECTRODE-SKIN IMPEDANCE COMPONENT ESTIMATION IN THE TIME-DOMAIN

机译：时域中的电极-皮肤阻抗分量估计

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摘要

This paper presents a method to estimate the individual component values of a bipolar electrode-skin interface, with future intent of applying compensatory electrode-skin impedance balancing prior recording bio-signals with electromyography. The electrode-skin interface was stimulated by a step input and the output behaviour was characterised using a single exponential model per electrode. The method was applied to simulated circuitry, passive component circuitry and a human subject. The accuracy of the method was determined using the known values that comprised the simulated and passive component circuitry. Nine often simulated data sets resulted in accurate estimations, with a maximum error of 0.763% and a mean error of 0.076% per component. The method also produced successful estimates for nine of the ten physical circuitry data sets, with a maximum error of 10.29c and a mean error of 3.49% per component. The method was unsuccessful in estimating the individual electrode-skin impedance components for the human subject: this was due to the system failing to reach steady state during the stimulation period. The authors suspect a DC offset caused by the half-cell potentials associated with the electrode-skin interface were the cause of the unexpected behaviour.
机译：本文提出了一种估计双极型电极-皮肤界面的各个分量值的方法，其未来的目的是在使用肌电图记录生物信号之前应用补偿性电极-皮肤阻抗平衡。电极-皮肤界面受到阶跃输入的刺激，输出行为通过每个电极的单个指数模型进行表征。该方法被应用于模拟电路，无源元件电路和人体。使用包含模拟和无源组件电路的已知值确定方法的准确性。九个经常模拟的数据集导致准确的估计，每个组件的最大误差为0.763％，平均误差为0.076％。该方法还成功地对十个物理电路数据集中的九个进行了估计，最大误差为10.29c，每个组件的平均误差为3.49％。该方法未能成功地估算出人类受试者的各个电极-皮肤阻抗分量：这是由于系统在刺激期间无法达到稳定状态。作者怀疑由与电极-皮肤界面相关的半电池电位引起的直流偏移是意外行为的原因。

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