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A Smart Rig for Calibration of Gas Sensor Nodes
Mohieddine A Benammar1, Sabbir H M Ahmad1, Abderrazak Abdaoui1
1Electrical Engineering, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar.
Sensors (Basel, Switzerland)
|April 25, 2020
Summary
Regular maintenance ensures electrochemical gas sensor accuracy. This study introduces a smart calibration rig for simultaneous, automated sensor testing and recalibration, improving reliability for air quality monitoring.
Area of Science:
- Environmental Science
- Instrumentation Engineering
Background:
- Electrochemical gas sensors need regular maintenance for accurate measurements.
- Current calibration procedures require specific working environments and manual intervention.
Purpose of the Study:
- To develop and validate a smart calibration rig for automated, simultaneous calibration of multiple electrochemical gas sensors.
- To enhance the reliability and efficiency of sensor maintenance for air quality monitoring applications.
Main Methods:
- A novel calibration rig integrating gas mixing, temperature control, and a test chamber was designed.
- An automated LabVIEW-based platform controlled the calibration process, logged data, and applied best-fit equations.
- Communication utilized the IEEE 802.15.4 (ZigBee) protocol for seamless integration with field deployment systems.
Main Results:
- The proposed rig enables simultaneous calibration of multiple sensors.
- Automated data logging and equation application streamlined the recalibration process.
- The system demonstrated effectiveness in calibrating electrochemical gas sensors.
Conclusions:
- The developed smart calibration rig significantly improves the efficiency and reliability of electrochemical gas sensor maintenance.
- This automated system is crucial for ensuring accurate air quality measurements in field deployments.
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