TY - GEN
T1 - Design and Evaluation of a Miniaturized Non-Resonant Photoacoustic CO2 Gas Sensor with Integrated Electronics
AU - Zhang, Nan
AU - Srivastava, Ananya
AU - Li, Xiaolin
AU - Li, Yuanchun
AU - Zhou, Zhenyue
AU - Bittner, Achim
AU - Zhou, Xiaofeng
AU - Dehe, Alfons
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - This paper presents a miniaturized non-resonant photoacoustic CO2gas sensor with integrated electronics. The photoacoustic sensor (PAS) consists of a black body IR emitter, an appropriate optical filter, and a highly sensitive microphone, which converts the generated acoustic waves to electrical signals. The integrated electronics unit facilitates a standalone PAS sensor system, controls and powers the system components, and processes the electrical signals to provide a corresponding CO2gas concentration. The performance of the developed CO2PAS is evaluated and characterized. The measurements are done in the range of 0-9000 ppm. A sensitivity of 0.074 μV/ppm is achieved in the concentration range of 0-1537 ppm. For such a miniaturized non-resonant PAS sensor, the theoretical limit of detection (LOD) reaches 2.2 ppm for a sampling time of 330 seconds. Considering the cost, size, and performance, this sensor demonstrates the considerable potential for accurate and reliable indoor air quality monitoring.
AB - This paper presents a miniaturized non-resonant photoacoustic CO2gas sensor with integrated electronics. The photoacoustic sensor (PAS) consists of a black body IR emitter, an appropriate optical filter, and a highly sensitive microphone, which converts the generated acoustic waves to electrical signals. The integrated electronics unit facilitates a standalone PAS sensor system, controls and powers the system components, and processes the electrical signals to provide a corresponding CO2gas concentration. The performance of the developed CO2PAS is evaluated and characterized. The measurements are done in the range of 0-9000 ppm. A sensitivity of 0.074 μV/ppm is achieved in the concentration range of 0-1537 ppm. For such a miniaturized non-resonant PAS sensor, the theoretical limit of detection (LOD) reaches 2.2 ppm for a sampling time of 330 seconds. Considering the cost, size, and performance, this sensor demonstrates the considerable potential for accurate and reliable indoor air quality monitoring.
KW - CO concentration measurements
KW - Gas sensor
KW - Miniaturized PAS
KW - Photoacoustic
UR - https://www.scopus.com/pages/publications/85179762225
U2 - 10.1109/SENSORS56945.2023.10325246
DO - 10.1109/SENSORS56945.2023.10325246
M3 - 会议稿件
AN - SCOPUS:85179762225
T3 - Proceedings of IEEE Sensors
BT - 2023 IEEE SENSORS, SENSORS 2023 - Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE SENSORS, SENSORS 2023
Y2 - 29 October 2023 through 1 November 2023
ER -