Journal
IEEE SENSORS JOURNAL
Volume 14, Issue 10, Pages 3391-3399Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2014.2332278
Keywords
Electrochemical gas sensor array; low power
Funding
- National Institute for Occupational Safety and Health [R01OH009644]
Ask authors/readers for more resources
This paper presents an electrochemical gas sensor array system for health and safety monitoring. The system incorporates a custom room temperature ionic-liquid gas sensor array, a custom multimode electrochemical sensor readout board, and a commercial low power microcontroller board. Sensors for multiple gas targets were implemented in a miniaturized 2 x 2 array where each sensor consumes <3.2 mu W and occupies a sensing area volume of 350 mm(3). A novel resource-sharing circuit architecture tailored to the gas sensor array was utilized to significantly decrease power, cost, and size. The system supports multiple electrochemical measurement modes to provide orthogonal data to in-module sensor array algorithms for better prediction accuracy. The system achieves a resolution as high as 0.01 vol% in amperometry mode and 0.06 vol% in ac impedance mode for oxygen as an example target gas.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available