Research Article
Deployment of a Wireless Ultrasonic Sensor Array for Psychological Monitoring
@INPROCEEDINGS{10.1007/978-3-642-11870-8_5, author={Roland Cheng and Wendi Heinzelman and Melissa Sturge-Apple and Zeljko Ignjatovic}, title={Deployment of a Wireless Ultrasonic Sensor Array for Psychological Monitoring}, proceedings={Sensor Applications, Experimentation, and Logistics. First International Conference, SENSAPPEAL 2009, Athens, Greece, September 25, 2009, Revised Selected Papers}, proceedings_a={SENSAPPEAL}, year={2012}, month={5}, keywords={Ultrasound sensor network imaging array WiPsy}, doi={10.1007/978-3-642-11870-8_5} }- Roland Cheng
Wendi Heinzelman
Melissa Sturge-Apple
Zeljko Ignjatovic
Year: 2012
Deployment of a Wireless Ultrasonic Sensor Array for Psychological Monitoring
SENSAPPEAL
Springer
DOI: 10.1007/978-3-642-11870-8_5
Abstract
The deployment of a wireless sensor network to monitor subjects’ locations and relative distances during psychological experiments is discussed. As its primary function, an overhead array of ultrasound sensors automatically tracks a parent, child and stranger over a observation area. The array of ultrasonic-equipped motes can resolve two point targets separated by at least 73 cm. Each sensor can detect the range to the nearest object with 20 cm resolution. Challenges with setting up the 6 x 6 ultrasonic imaging array and with establishing a Kalman tracking filter are also detailed. This (Wireless sensors for Psychology research) system provides accurate, real-time quantitative metrics for psychological evaluation in lieu of traditional qualitative manual coding. Moreover, tracking subjects using ultrasound sensors is less error-prone than existing methods that track based on human coding of video. Overall, WiPsy strives to streamline data acquisition, processing, and analysis by providing previously unavailable assessment parameters.