Paper Info
Title
A Smart Rig for Calibration of Gas Sensor Nodes.
Abstract
Electrochemical gas sensors require regular maintenance to check and secure proper functioning. Standard procedures usually involve testing and recalibration of the sensors, for which working environments are needed. Periodic calibration is therefore necessary to ensure reliable and accurate measurements. This paper proposes a dedicated smart calibration rig with a set of novel features enabling simultaneous calibration of multiple sensors. The proposed calibration rig system comprises a gas mixing system, temperature control system, a test chamber, and a process-control PC that controls all calibration phases. The calibration process is automated by a LabVIEW-based platform that controls the calibration environment for the sensor nodes, logs sensor data, and best fit equation based on interpolation for every sensor on the node and uploads it to the sensor node for next deployments. The communication between the PC and the sensor nodes is performed using the same IEEE 802.15.4 (ZigBee) protocol that the nodes also use in field deployment for air quality measurement. The results presented demonstrate the effectiveness of the sensors calibration rig.
Year
DOI
Venue
2020
10.3390/s20082341
SENSORS
Keywords
DocType
Volume
gas sensors calibration,cross-sensitivity,piecewise curve fitting,IEEE 802.15.4 (ZigBee),linear regression,mass flow controller,wireless calibration
Journal
20
Issue
ISSN
Citations 
8.0
1424-8220
0
PageRank 
References 
Authors
0.34
0
7
Name
Order
Citations
PageRank
Mohieddine A Benammar100.34
Sabbir H M Ahmad200.34
Abderrazak Abdaoui300.68
Hasan Tariq401.01
Farid Touati516014.62
Mohammed Al-Hitmi613.06
Damiano Crescini7118.50