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Publication

Recognizing Subtle User Activities and Person Identity with Cheap Resistive Pressure Sensing Carpet

Jingyuan Cheng; Mathias Sundholm; Bo Zhou; Matthias Kreil; Paul Lukowicz
In: -- (Hrsg.). --. International Conference on Intelligent Environments (IE-14), IEEE, 2014.

Abstract

We demonstrate through a pressure sensor matrix, that weight distribution on feet is influenced by body posture. A small cheap carpet equipped with low precision pressure sensor matrix is already sufficient to detect subtle activities and identity of the person on the carpet. By a 0.4 m^2 matrix of 32*32, 12 bit pressure sensors, we achieve 78.7% accuracy for 11 test subjects performing 7 subtle activities (open 7 different drawers or cabinet doors) and 88.6% accuracy in recognizing who has performed the activities. We thus see the potential of using a single carpet as a unified approach in houses to detect how inhabitants interact with the furniture without attaching different sensors onto each single furniture.