Zero potential method measurement error analysis for networked resistive sensor arrays
Xuefeng Zhang, Xiangdong Ye · IET Science Measurement & Technology · 2016
This study presents the measurement error analysis of two dimensional resistive sensor arrays sharing row and column connections to reduce the interconnections complexity, based on the setting non‐current scanned electrodes zero potential (S‐NCSE‐ZP) method. The authors provide a mathematical model to evaluate the performance of the circuit and optimise its design by calculating the voltage of the electrodes in sensor array. To reveal the effects of the circuit parameters on the performance of the circuit, the authors perform a parametric study on the array size, adjacent elements, and on‐resistance of switches. The theoretical results show that the on‐resistance of switches significantly influences on the performance of the S‐NCSE‐ZP circuit. Moreover, array size and adjacent elements also play an important role in the performance of the circuit. Finally, the authors present an efficient circuit based on the zero potential method, to overcome on the measurement inaccuracy.