PDF(Pubmed)
Abstract：
The capability of dielectric measurements was significantly increased with the development of capacitive one-side access physical sensors. Complete samples give no opportunity to study electric susceptibility at a partial coverage of the one-side access sensor\'s active area; therefore, partial samples are proposed. The electric susceptibility at the partial coverage of a circular one-side access sensor with cylinders and shells is investigated for polyurethane materials. The implementation of the relative partial susceptibility permitted us to transform the calculated susceptibility data to a common scale of 0.0-1.0 and to outline the main trends for PU materials. The partial susceptibility, relative partial susceptibility, and change rate of relative partial susceptibility exhibited dependence on the coverage coefficient of the sensor\'s active area. The overall character of the curves for the change rate of the relative partial susceptibility, characterised by slopes of lines and the ratio of the change rate in the centre and near the gap, corresponds with the character of the surface charge density distribution curves, calculated from mathematical models. The elaborated methods may be useful in the design and optimization of capacitive OSA sensors of other configurations of electrodes, independent of the particular technical solution.
摘要：
随着电容式一侧访问物理传感器的发展，介电测量的能力显着提高。完整的样本没有机会研究单侧接入传感器有效区域部分覆盖的电敏感性；因此，提出了部分样本。对于聚氨酯材料，研究了带有圆柱体和外壳的圆形单侧访问传感器部分覆盖时的电敏感性。相对部分磁化率的实施使我们能够将计算出的磁化率数据转换为0.0-1.0的通用标度，并概述PU材料的主要趋势。部分易感性，相对部分敏感性，相对部分磁化率的变化率与传感器有效区域的覆盖系数有关。相对部分磁化率变化率曲线的总体特征，以线的斜率和中间和间隙附近的变化率之比为特征，与表面电荷密度分布曲线的特征相对应，从数学模型计算。详细阐述的方法可能有助于其他电极配置的电容式OSA传感器的设计和优化。独立于特定的技术解决方案。
