Sensors, Vol. 19, Pages 4452: Energy-Efficient Elderly Fall Detection System Based on Power Reduction and Wireless Power Transfer

Sensors, Vol. 19, Pages 4452: Energy-Efficient Elderly Fall Detection System Based on Power Reduction and Wireless Power Transfer Sensors doi: 10.3390/s19204452 Authors: Kamel Gharghan Saad Fakhrulddin Al-Naji Chahl Elderly fall detection systems based on wireless body area sensor networks (WBSNs) have increased significantly in medical contexts. The power consumption of such systems is a critical issue influencing the overall practicality of the WBSN. Reducing the power consumption of these networks while maintaining acceptable performance poses a challenge. Several power reduction techniques can be employed to tackle this issue. A human vital signs monitoring system (HVSMS) has been proposed here to measure vital parameters of the elderly, including heart rate and fall detection based on heartbeat and accelerometer sensors, respectively. In addition, the location of elderly people can be determined based on Global Positioning System (GPS) and transmitted with their vital parameters to emergency medical centers (EMCs) via the Global System for Mobile Communications (GSM) network. In this paper, the power consumption of the proposed HVSMS was minimized by merging a data-event (DE) algorithm and an energy-harvesting-technique-based wireless power transfer (WPT). The DE algorithm improved HVSMS power consumption, utilizing the duty cycle of the sleep/wake mode. The WPT successfully charged the HVSMS battery. The results demonstrated that the proposed DE algori...
Source: Sensors - Category: Biotechnology Authors: Tags: Article Source Type: research