High-Accuracy, Compact Scanning Method and Circuit for Resistive Sensor Arrays
- Authors
- Kim, Jong Seok; Kwon, Dae-Yong; Choi, Byong-Deok
- Issue Date
- Feb-2016
- Publisher
- Multidisciplinary Digital Publishing Institute (MDPI)
- Keywords
- sensor array; resistive sensor; crosstalk; read-out circuit; row driver
- Citation
- Sensors, v.16, no.2, pp.1 - 16
- Indexed
- SCIE
SCOPUS
- Journal Title
- Sensors
- Volume
- 16
- Number
- 2
- Start Page
- 1
- End Page
- 16
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/24009
- DOI
- 10.3390/s16020155
- ISSN
- 1424-8220
- Abstract
- The zero-potential scanning circuit is widely used as read-out circuit for resistive sensor arrays because it removes a well known problem: crosstalk current. The zero-potential scanning circuit can be divided into two groups based on type of row drivers. One type is a row driver using digital buffers. It can be easily implemented because of its simple structure, but we found that it can cause a large read-out error which originates from on-resistance of the digital buffers used in the row driver. The other type is a row driver composed of operational amplifiers. It, very accurately, reads the sensor resistance, but it uses a large number of operational amplifiers to drive rows of the sensor array; therefore, it severely increases the power consumption, cost, and system complexity. To resolve the inaccuracy or high complexity problems founded in those previous circuits, we propose a new row driver which uses only one operational amplifier to drive all rows of a sensor array with high accuracy. The measurement results with the proposed circuit to drive a 4 x 4 resistor array show that the maximum error is only 0.1% which is remarkably reduced from 30.7% of the previous counterpart.
- Files in This Item
-
- Appears in
Collections - 서울 공과대학 > 서울 융합전자공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/24009)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.