Abstract
A novel airflow sensor has been developed for applications involving miniature chemical sensing robots. Information about air movement is essential for robots when they are searching for the sources of chemical plumes. The airflow sensor described here measures both wind direction and velocity at airflow rates commonly encountered in an indoor environment. Measurements are made by rotating a small paddle in the airflow. The varying speed of the paddle is analysed to determine both wind speed and direction. Low power consumption and rugged construction make the sensor well suited to robotic applications. The prototype sensor is small enough to fit on a mobile robot measuring only 10 cm in diameter. This paper presents the sensor operating principle, construction and some experimental results.
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