Chemoresistive Sensor Readout Circuit Design for Detecting Gases with Slow Response Time Characteristics
Based on an analysis of the signal characteristics of gas sensors, this work presents a chemoresistive sensor readout circuit design for detecting gases with slow response time characteristics. The proposed readout circuit directly generates a reference voltage corresponding to the initial value of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/3/1102 |
| _version_ | 1797484601629736960 |
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| author | Dong-Yeon Lee Joon-Boo Yu Hyung-Gi Byun Hyeon-June Kim |
| author_facet | Dong-Yeon Lee Joon-Boo Yu Hyung-Gi Byun Hyeon-June Kim |
| author_sort | Dong-Yeon Lee |
| collection | DOAJ |
| description | Based on an analysis of the signal characteristics of gas sensors, this work presents a chemoresistive sensor readout circuit design for detecting gases with slow response time characteristics. The proposed readout circuit directly generates a reference voltage corresponding to the initial value of the gas sensor and extracts only the amount of gas concentration change in the sensor. Because the proposed readout circuit can adaptively regenerate the suitable reference voltage under various changing ambient conditions, it can alleviate the variation in output values at the same gas concentration caused by non-uniformities among gas sensors. Furthermore, this readout circuit effectively eliminates the initial value shifts due to the poor reproducibility of the gas sensor itself without requiring complex digital signal calibrations. This work focuses on a commercially viable readout circuit structure that can effectively obtain slow response gas information without requiring a large capacitor. The proposed readout circuit operation was verified by simulations using spectre in cadence simulation software. It was then implemented on a printed circuit board with discrete components to confirm the effectiveness with existing gas sensor systems and its commercial viability. |
| first_indexed | 2024-03-09T23:07:42Z |
| format | Article |
| id | doaj.art-4e0e7aa2b1e64a47be0fc6138c50180f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T23:07:42Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-4e0e7aa2b1e64a47be0fc6138c50180f2023-11-23T17:50:31ZengMDPI AGSensors1424-82202022-01-01223110210.3390/s22031102Chemoresistive Sensor Readout Circuit Design for Detecting Gases with Slow Response Time CharacteristicsDong-Yeon Lee0Joon-Boo Yu1Hyung-Gi Byun2Hyeon-June Kim3Department of Electronics Engineering, Kangwon National University, Samcheok 25913, KoreaDepartment of Electronics Engineering, Kangwon National University, Samcheok 25913, KoreaDepartment of Electronics Engineering, Kangwon National University, Samcheok 25913, KoreaDepartment of Electronics Engineering, Kangwon National University, Samcheok 25913, KoreaBased on an analysis of the signal characteristics of gas sensors, this work presents a chemoresistive sensor readout circuit design for detecting gases with slow response time characteristics. The proposed readout circuit directly generates a reference voltage corresponding to the initial value of the gas sensor and extracts only the amount of gas concentration change in the sensor. Because the proposed readout circuit can adaptively regenerate the suitable reference voltage under various changing ambient conditions, it can alleviate the variation in output values at the same gas concentration caused by non-uniformities among gas sensors. Furthermore, this readout circuit effectively eliminates the initial value shifts due to the poor reproducibility of the gas sensor itself without requiring complex digital signal calibrations. This work focuses on a commercially viable readout circuit structure that can effectively obtain slow response gas information without requiring a large capacitor. The proposed readout circuit operation was verified by simulations using spectre in cadence simulation software. It was then implemented on a printed circuit board with discrete components to confirm the effectiveness with existing gas sensor systems and its commercial viability.https://www.mdpi.com/1424-8220/22/3/1102gas sensorchemoresistive sensorslow response gas sensingreadout circuitoffset tracking readout |
| spellingShingle | Dong-Yeon Lee Joon-Boo Yu Hyung-Gi Byun Hyeon-June Kim Chemoresistive Sensor Readout Circuit Design for Detecting Gases with Slow Response Time Characteristics Sensors gas sensor chemoresistive sensor slow response gas sensing readout circuit offset tracking readout |
| title | Chemoresistive Sensor Readout Circuit Design for Detecting Gases with Slow Response Time Characteristics |
| title_full | Chemoresistive Sensor Readout Circuit Design for Detecting Gases with Slow Response Time Characteristics |
| title_fullStr | Chemoresistive Sensor Readout Circuit Design for Detecting Gases with Slow Response Time Characteristics |
| title_full_unstemmed | Chemoresistive Sensor Readout Circuit Design for Detecting Gases with Slow Response Time Characteristics |
| title_short | Chemoresistive Sensor Readout Circuit Design for Detecting Gases with Slow Response Time Characteristics |
| title_sort | chemoresistive sensor readout circuit design for detecting gases with slow response time characteristics |
| topic | gas sensor chemoresistive sensor slow response gas sensing readout circuit offset tracking readout |
| url | https://www.mdpi.com/1424-8220/22/3/1102 |
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