Design of readout circuit for piezoresistive pressure sensor using nodal array approach reading technique

Wan Zuha, Wan Hasan and Fairuz Rizal, Mohamad Rashidi and Mohd Nizar, Hamidon and Yufridin, Wahab (2017) Design of readout circuit for piezoresistive pressure sensor using nodal array approach reading technique. Pertanika Journal of Science & Technology (JST), 25 (Special). pp. 215-224. ISSN 0128-7680 (Print);2231-8526 (Online).. (Published)

Design of Readout circuit for Piezoresistive pressure sensor using Nodal array approach reading technique.pdf

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In this paper, we proposed a new readout circuit in order to improve measurement output while reading the grouped resistive value in matrix array form. The purpose of having this circuit is to overcome the main problem in applying piezoresistive pressure sensor array for foot plantar application. This new approach is called Nodal Array Approach (NAA), a modified version of Wheatstone Bridge Circuit based on nodal analysis technique using Kirchcoff Current Law. The NAA calculates the sensors’ resistance values by solving simultaneous equations from reading voltages of the proposed readout circuit. Therefore, it is found that the readout circuit connection is of low complexity as it only uses resistive element as the major component of reading technique with only four iterations involved for each voltage nodes. Through simulation results, it shows that NAA is able to achieve high accuracy in obtaining a sensor’s resistance value by adhering to several limitations in order to avoid miscalculation (< 5% average calculation error).

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Resistive readout circuit; Resistive sensor array; Foot plantar application
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Electrical & Electronic Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 20 Sep 2018 04:53
Last Modified: 20 Sep 2018 04:53
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