Indoor Pedestrian Tracking by On-Body Multiple Receivers

290

161

Rapid growth of the aged population has caused an immense increase in the demand for healthcare services. Generally, the elderly are more prone to health problems compared to other age groups. With effective monitoring and alarm systems, the adverse effects of unpredictable events such as sudden illnesses, falls, and so on can be ameliorated to some extent. Recently, advances in wearable and sensor technologies have improved the prospects of these service systems for assisting elderly people. In this article, we review state-of-the-art wearable technologies that can be used for elderly care. These technologies are categorized into three types: indoor positioning, activity recognition and real time vital sign monitoring. Positioning is the process of accurate localization and is particularly important for elderly people so that they can be found in a timely manner. Activity recognition not only helps ensure that sudden events (e.g., falls) will raise alarms but also functions as a feasible way to guide people's activities so that they avoid dangerous behaviors. Since most elderly people suffer from age-related problems, some vital signs that can be monitored comfortably and continuously via existing techniques are also summarized. Finally, we discussed a series of considerations and future trends with regard to the construction of "smart clothing" system.

Section: Indoor Positioning Systemsmentioning

confidence: 99%

A Review of Wearable Technologies for Elderly Care that Can Accurately Track Indoor Position, Recognize Physical Activities and Monitor Vital Signs in Real Time

Wang

Yang

Dong

2017

290

161

“…IPSs can be used for many activities, for example, detecting and tracking people, assisting visually impaired people in their daily activities, and facilitating medical monitoring. Some public places, such as parks, museums, and shopping centers, need indoor positioning services, for example, to provide indoor navigation for visually impaired people, and to assist tourists and visitors in finding their destination [ 19 , 42 ].…”

Section: Indoor Positioning Systemsmentioning

confidence: 99%

“…In recent years, indoor positioning technologies and techniques have gained prominence, allowing the construction of systems for countless model scenarios [ 9 , 42 , 43 ]. A wide variety of technologies have been proposed, which is why IPSs can be categorized in several ways according to various criteria.…”

Section: Indoor Positioning Systemsmentioning

confidence: 99%

A Review of Technologies and Techniques for Indoor Navigation Systems for the Visually Impaired

Simões

Machado

Sales

et al. 2020

Technologies and techniques of location and navigation are advancing, allowing greater precision in locating people in complex and challenging conditions. These advances have attracted growing interest from the scientific community in using indoor positioning systems (IPSs) with a higher degree of precision and fast delivery time, for groups of people such as the visually impaired, to some extent improving their quality of life. Much research brings together various works that deal with the physical and logical approaches of IPSs to give the reader a more general view of the models. These surveys, however, need to be continuously revisited to update the literature on the features described. This paper presents an expansion of the range of technologies and methodologies for assisting the visually impaired in previous works, providing readers and researchers with a more recent version of what was done and the advantages and disadvantages of each approach to guide reviews and discussions about these topics. Finally, we discuss a series of considerations and future trends for the construction of indoor navigation and location systems for the visually impaired.

“…In [ 18 ] a cooperative method for the localization of the nodes in a WSN is presented. Other authors employ multiple receivers to enhance the ranging accuracy of RSS measurements and to provide coarse estimations of the heading of the user [ 22 ]. In [ 23 ] a Bluetooth based system is presented employing a stigmergic approach to mitigate the multipath fading.…”

Section: Network Based Systemsmentioning

confidence: 99%

“… Classification of Indoor Positioning Systems. Time [ 9 , 12 , 13 , 14 ], Angle [ 15 , 16 ], RSS [ 17 , 18 , 19 , 20 , 21 , 22 , 23 ], Proximity [ 24 , 25 , 26 , 27 , 28 , 29 ], Deterministic [ 30 , 31 , 32 , 33 , 34 ], Probabilistic [ 35 , 36 , 37 ], Strapdown [ 38 , 39 , 40 ], Step and Heading [ 41 , 42 , 43 ] , SLAM [ 44 , 45 , 46 ], Hybrid [ 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , …”

Section: Figurementioning

confidence: 99%

A Review of Pedestrian Indoor Positioning Systems for Mass Market Applications

Correa

Barceló

Morell

et al. 2017

Self Cite

In the last decade, the interest in Indoor Location Based Services (ILBS) has increased stimulating the development of Indoor Positioning Systems (IPS). In particular, ILBS look for positioning systems that can be applied anywhere in the world for millions of users, that is, there is a need for developing IPS for mass market applications. Those systems must provide accurate position estimations with minimum infrastructure cost and easy scalability to different environments. This survey overviews the current state of the art of IPSs and classifies them in terms of the infrastructure and methodology employed. Finally, each group is reviewed analysing its advantages and disadvantages and its applicability to mass market applications.