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This article reports the findings of a radio received signal strength (RSS) based biometric sensing approach for lightweight walker recognition. A vertically deployed radio sensing network is designed to obtain the movement of walker at seven different heights. The sequential RSS at each height contributes weak distinguished feature to walker's identify. The human subjects are recognized by vector...
Radio tomographic networks based imaging is bringing significant impact in activity sensing. In this article, we proposed an abnormal activity detection method without any computed recovery imaging. By organizing a vertically arranged profile-aware network, the critical state feature of abnormal activity is encoded into data stream of received signal strengths (RSSs). Then, the new coming sensor data...
This paper proposes a new type of spherical wheeled robot with an annular support leg. It can keep statically stable when powered off and automatically stand up with the assistance of the support leg when powered on. The stability of the robot at equilibrium is verified firstly using the planar simplified model. And the robot is proved to be controllable. Thus a double-closed loop control system is...
This paper reports the findings of a new distributed infrared biometric sensing approach in lightweight human identification. Pyroelectric infrared (PIR) sensor arrays are employed in infrared biometric sensing while the vector quantization (VQ) based algorithm is developed for identifying walkers in the context of the path-constrained walking. The main contribution of this paper is twofold. First,...
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