Abstract

Emergency situations associated with falls are a serious concern for an aging society. Yet following the recent development within ICT, a significant number of solutions have been proposed to track body movement and detect falls using various sensor technologies, thereby facilitating fall detection and in some cases prevention. A number of recent reviews on fall detection methods using ICT technologies have emerged in the literature and an increasingly popular approach considers combining information from several sensor sources to assess falls. The aim of this paper is to review in detail the subfield of fall detection techniques that explicitly considers the use of multisensor fusion based methods to assess and determine falls. The paper highlights key differences between the single sensor-based approach and a multifusion one. The paper also describes and categorizes the various systems used, provides information on the challenges of a multifusion approach, and finally discusses trends for future work.

Highlights

  • According to the latest United Nation statistic reports, the mean age of the population is expected to grow rapidly in developed countries within the several decades [1]

  • Fall detection systems play an essential role in modern healthcare

  • Latest sensor technologies are deployed in order to distinguish between falls and regular Activity of Daily Living (ADL) with a recent trend to combine unrelated data sources

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Summary

Introduction

According to the latest United Nation statistic reports, the mean age of the population is expected to grow rapidly in developed countries within the several decades [1]. This will subsequently increase the cost of the healthcare and result in significant loss for the national budgets. Close to half of nursing home residents experience falls each year, with 40% falling more than once [2] These accidents can often have both physical [3] (often head and hip injury) and psychological [4] (fear of falling) consequences. Other serious issues associated with falls include unconsciousness after falling, recovery time due to fall related injury, and death, and many of these issues can be overcome by improving medical response level and rescue time

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