IEEE J Biomed Health Inform - Embedded DSP-based telehealth radar system for remote in-door fall detection.

Tópicos

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Resumo

Telehealth systems and applications are extensively investigated nowadays to enhance the quality-of-care and, in particular, to detect emergency situations and to monitor the well-being of elderly people, allowing them to stay at home independently as long as possible. In this paper, an embedded telehealth system for continuous, automatic, and remote monitoring of real-time fall emergencies is presented and discussed. The system, consisting of a radar sensor and base station, represents a cost-effective and efficient healthcare solution. The implementation of the fall detection data processing technique, based on the least-square support vector machines, through a digital signal processor and the management of the communication between radar sensor and base station are detailed. Experimental tests, for a total of 65 mimicked fall incidents, recorded with 16 human subjects (14 men and two women) that have been monitored for 320 min, have been used to validate the proposed system under real circumstances. The subjects' weight is between 55 and 90 kg with heights between 1.65 and 1.82 m, while their age is between 25 and 39 years. The experimental results have shown a sensitivity to detect the fall events in real time of 100% without reporting false positives. The tests have been performed in an area where the radar's operation was not limited by practical situations, namely, signal power, coverage of the antennas, and presence of obstacles between the subject and the antennas.

Resumo Limpo

telehealth system applic extens investig nowaday enhanc qualityofcar particular detect emerg situat monitor wellb elder peopl allow stay home independ long possibl paper embed telehealth system continu automat remot monitor realtim fall emerg present discuss system consist radar sensor base station repres costeffect effici healthcar solut implement fall detect data process techniqu base leastsquar support vector machin digit signal processor manag communic radar sensor base station detail experiment test total mimick fall incid record human subject men two women monitor min use valid propos system real circumst subject weight kg height m age year experiment result shown sensit detect fall event real time without report fals posit test perform area radar oper limit practic situat name signal power coverag antenna presenc obstacl subject antenna

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