Design of Gas Monitoring Terminal Based on Quadrotor UAV.

Area of Science:

• Environmental Science
• Aerospace Engineering
• Sensor Technology

Background:

• Increasing global air pollution necessitates advanced monitoring solutions.
• Existing methods face challenges with atmospheric interference and accuracy.
• Quadrotor Unmanned Aerial Vehicles (UAVs) offer potential for mobile atmospheric monitoring.

Purpose of the Study:

• To design and validate a gas monitoring terminal integrated with a quadrotor UAV.
• To mitigate airflow disturbances affecting UAV-based gas sensing.
• To enhance the accuracy and reliability of atmospheric gas concentration measurements.

Main Methods:

• Development of a quadrotor UAV platform with integrated gas sensors.
• Design of a pump-suction series cavity to reduce airflow disturbance, validated by Computational Fluid Dynamics (CFD).
• Implementation of linear regression for sensor calibration and polynomial piecewise regression for temperature compensation.

Main Results:

• CFD simulations confirmed the anti-interference capability of the designed cavity.
• Sensor calibration achieved a high goodness of fit (R² = 0.9981), improving concentration accuracy.
• Temperature compensation significantly enhanced the overall terminal accuracy.
• Successful detection of vehicle exhaust in real-world conditions, demonstrating reliability.

Conclusions:

• The developed UAV-based gas monitoring terminal is reliable and accurate for atmospheric monitoring.
• The integrated design effectively addresses challenges of airflow disturbance and sensor inaccuracies.
• This technology offers a promising solution for mobile air quality assessment and pollution source identification.