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This research experimentally reveals a sensor application in a future home in the IoE era that the possibility of using piezoelectric energy harvesting chips placed under the shoe insole for sensing foot pressure, or human activity while walking. Commercially available flat type piezoelectric PVDF polymer film chips were used for experiments. Two experiments are conducted: i) output voltage vs. chip...
Recent advances in information communication technologies have yielded a variety of new services. Location based services are attractive as they offer so many new functionalities. However, if they are used indoors, location recognition is essential because the global positioning system, the preferred choice outdoors, cannot be used indoors. Therefore, this paper proposes an indoor human location recognition...
Recent advances in information communication technologies will yield new systems/devices for the visually impaired. To realize such systems/devices, location information is essential, especially for indoor application. This paper proposes an indoor location estimation method that uses cost-effective radio frequency nodes. The proposed method uses received signal strength values to estimate the distance...
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