this paper proposes a batteryless sensing and computational device to collect and process electrocardiography(ECG)signals for monitoring heart rate variability(HRV).The proposed system comprises of a passive UHF radio...
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this paper proposes a batteryless sensing and computational device to collect and process electrocardiography(ECG)signals for monitoring heart rate variability(HRV).The proposed system comprises of a passive UHF radio frequency identification(RFID)tag,an extreme low power microcontroller,a low-power ECG circuit,and a radio frequency(RF)energy *** microcontroller and ECG circuits consume less power of only~30μA and~3 mA,***,the proposed RF harvester operating at frequency band of 902 MHz~928 MHz can sufficiently collect available energy from the RFID reader to supply power to the system within a maximum distance of~2 *** extract R-peak of the ECG signal,a robust algorithm that consumes less time processing is also *** information of R-peaks is stored into an Electronic Product Code(EPC)Class 1st Generation 1st compliant ID of the tag and read by the *** reader is functioned to collected the R-peak data with sampling rate of 100ms;therefore,the user application can monitor fully range of *** performance of the proposed system shows that this study can provide a good solution in paving the way to new classes of healthcare applications.
The Pho Han Formation is exposed on southern Cat Ba Island,Hai Phong Province in northeastern Vietnam,and intercalates the Devonian and Carboniferous(D-C) boundary(Ta and Doan,2007;Komatsu et al.,2012).The D-C boundar...
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The Pho Han Formation is exposed on southern Cat Ba Island,Hai Phong Province in northeastern Vietnam,and intercalates the Devonian and Carboniferous(D-C) boundary(Ta and Doan,2007;Komatsu et al.,2012).The D-C boundary section consists mainly of limestone beds,
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