High-Accuracy, Compact Scanning Method and Circuit for Resistive Sensor Arrays
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 buffe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-01-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/16/2/155 |
| _version_ | 1798042246663110656 |
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| author | Jong-Seok Kim Dae-Yong Kwon Byong-Deok Choi |
| author_facet | Jong-Seok Kim Dae-Yong Kwon Byong-Deok Choi |
| author_sort | Jong-Seok Kim |
| collection | DOAJ |
| description | 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 × 4 resistor array show that the maximum error is only 0.1% which is remarkably reduced from 30.7% of the previous counterpart. |
| first_indexed | 2024-04-11T22:32:51Z |
| format | Article |
| id | doaj.art-5a0844a03adf4b75aa1b0b8a8c166265 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T22:32:51Z |
| publishDate | 2016-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-5a0844a03adf4b75aa1b0b8a8c1662652022-12-22T03:59:18ZengMDPI AGSensors1424-82202016-01-0116215510.3390/s16020155s16020155High-Accuracy, Compact Scanning Method and Circuit for Resistive Sensor ArraysJong-Seok Kim0Dae-Yong Kwon1Byong-Deok Choi2Department of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Deongdong-gu, Seoul 04763, KoreaDepartment of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Deongdong-gu, Seoul 04763, KoreaDepartment of Electronic Engineering, Hanyang University, 222 Wangsimni-ro, Deongdong-gu, Seoul 04763, KoreaThe 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 × 4 resistor array show that the maximum error is only 0.1% which is remarkably reduced from 30.7% of the previous counterpart.http://www.mdpi.com/1424-8220/16/2/155resistive sensorsensor arraycrosstalkread-out circuitrow driver |
| spellingShingle | Jong-Seok Kim Dae-Yong Kwon Byong-Deok Choi High-Accuracy, Compact Scanning Method and Circuit for Resistive Sensor Arrays Sensors resistive sensor sensor array crosstalk read-out circuit row driver |
| title | High-Accuracy, Compact Scanning Method and Circuit for Resistive Sensor Arrays |
| title_full | High-Accuracy, Compact Scanning Method and Circuit for Resistive Sensor Arrays |
| title_fullStr | High-Accuracy, Compact Scanning Method and Circuit for Resistive Sensor Arrays |
| title_full_unstemmed | High-Accuracy, Compact Scanning Method and Circuit for Resistive Sensor Arrays |
| title_short | High-Accuracy, Compact Scanning Method and Circuit for Resistive Sensor Arrays |
| title_sort | high accuracy compact scanning method and circuit for resistive sensor arrays |
| topic | resistive sensor sensor array crosstalk read-out circuit row driver |
| url | http://www.mdpi.com/1424-8220/16/2/155 |
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