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Simplified Sensing for Ambient Assisted Living in Smart Homes

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Sensor Networks".

Deadline for manuscript submissions: closed (10 December 2022) | Viewed by 23609

Special Issue Editors

University Carlos III of Madrid, Leganés, Spain
Interests: software engineering; semantic web; software; social web; internet; web; software development; software project management; semantic technology; accesibility
Special Issues, Collections and Topics in MDPI journals
University of Aveiro, Aveiro, Portugal
Interests: accessibility; active ageing; human-computer interaction; interactive television; usability; user-centered design; user experience; user studies
CEIEC - Universidad Francisco de Vitoria, Pozuelo de Alarcón Madrid, Spain
Interests: evolutionary computation; AI health; accessibility
Universidad Francisco de Vitoria, Pozuelo de Alarcón Madrid, Spain

Special Issue Information

Dear Colleagues,

The life expectancy of the world’s population is now growing, as is the number of single-person households of elderly people, whether because they have no relatives nearby, are widowed, or because of personal preference. However, in many countries, the number of elderly people who die alone in their own homes, either from accidents or disease, has also increased (especially in the current pandemic). Considering that currently, the global population spends more time inside their homes than outside (all of this, of course, depending on the health security measures imposed in each country or city), it is necessary to expand the studies on existing and develop new systems to improve the quality of life of older people in single-person households, either through monitoring of habitual behavior, or monitoring of vital signs, reminders of routines, detection of accidents, emergency alerts, telemedicine, etc.

This Special Issue invites researchers to carry out studies and identify potential avenues for development in this topic and also promotes the use of sensors and the Internet of Things (IoT) in a non-invasive way, in order to make elderly people feel safe, but at the same time comfortable at home.

Prof. Dr. Ángel García Crespo
Dr. Jorge Ferraz de Abreu
Dr. Álvaro García-Tejedor
Dr. Olga Peñalba Rodríguez
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Sensors and IoT for AAL and smart homes
  • Sensors and IoT for indoor and outdoor active aging
  • Sensors and IoT for rehabilitation and telemedicine and telecare in smart homes
  • Security and privacy in AAL applications
  • Machine Learning for advanced AAL applications
  • Prototypes and experiments in real scenarios
  • Social aspects of the use of AAL, considering patients, caregivers, and healthcare professionals

Published Papers (7 papers)

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Research

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25 pages, 9098 KiB  
Article
TV Interaction as a Non-Invasive Sensor for Monitoring Elderly Well-Being at Home
by Jorge Abreu, Rita Oliveira, Angel Garcia-Crespo and Roxana Rodriguez-Goncalves
Sensors 2021, 21(20), 6897; https://0-doi-org.brum.beds.ac.uk/10.3390/s21206897 - 18 Oct 2021
Cited by 2 | Viewed by 2353
Abstract
The number of technical solutions to remotely monitoring elderly citizens and detecting hazard situations has been increasing in the last few years. These solutions have dual purposes: to provide a feeling of safety to the elderly and to inform their relatives about potential [...] Read more.
The number of technical solutions to remotely monitoring elderly citizens and detecting hazard situations has been increasing in the last few years. These solutions have dual purposes: to provide a feeling of safety to the elderly and to inform their relatives about potential risky situations, such as falls, forgotten medication, and other unexpected deviations from daily routine. Most of these solutions are based on IoT (Internet of Things) and dedicated sensors that need to be installed at the elderly’s houses, hampering mass adoption. This justifies the search for non-invasive technical alternatives with smooth integration that relying only on existent devices, without the need for any additional installations. Therefore, this paper presents the SecurHome TV ecosystem, a technical solution based on the elderly’s interactions with their TV sets—one of the most used devices in their daily lives—acting as a non-invasive sensor enabling one to detect potential hazardous situations through an elaborated warning algorithm. Thus, this paper describes in detail the SecurHome TV ecosystem, with special emphasis on the warning algorithm, and reports on its validation process. We conclude that notwithstanding some constraints while setting the user’s pattern, either upon the cold start of the application or after an innocuous change in the user’s TV routine, the algorithm detects most hazardous situations contributing to monitor elderly well-being at home. Full article
(This article belongs to the Special Issue Simplified Sensing for Ambient Assisted Living in Smart Homes)
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28 pages, 15805 KiB  
Article
An Accessible Smart Home Based on Integrated Multimodal Interaction
by Ana Patrícia Rocha, Maksym Ketsmur, Nuno Almeida and António Teixeira
Sensors 2021, 21(16), 5464; https://0-doi-org.brum.beds.ac.uk/10.3390/s21165464 - 13 Aug 2021
Cited by 3 | Viewed by 3782
Abstract
Our homes are becoming increasingly sensorized and smarter. However, they are also becoming increasingly complex, making accessing them and their advantages difficult. Assistants have the potential for improving the accessibility of smart homes, by providing everyone with an integrated, natural, and multimodal way [...] Read more.
Our homes are becoming increasingly sensorized and smarter. However, they are also becoming increasingly complex, making accessing them and their advantages difficult. Assistants have the potential for improving the accessibility of smart homes, by providing everyone with an integrated, natural, and multimodal way of interacting with the home’s ecosystem. To demonstrate this potential and contribute to more environmentally friendly homes, in the scope of the project Smart Green Homes, a home assistant highly integrated with an ICT (Information and communications technology) home infrastructure was developed, deployed in a demonstrator, and evaluated by seventy users. The users’ global impression of our home assistant is in general positive, with 61% of the participants rating it as good or excellent overall and 51% being likely or very likely to recommend it to others. Moreover, most think that the assistant enhances interaction with the smart home’s multiple devices and is easy to use by everyone. These results show that a home assistant providing an integrated view of a smart home, through natural, multimodal, and adaptive interaction, is a suitable solution for enhancing the accessibility of smart homes and thus contributing to a better living ambient for all of their inhabitants. Full article
(This article belongs to the Special Issue Simplified Sensing for Ambient Assisted Living in Smart Homes)
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20 pages, 5261 KiB  
Article
Development of an Anomaly Alert System Triggered by Unusual Behaviors at Home
by Roxana Rodriguez-Goncalves, Angel Garcia-Crespo, Carlos Matheus-Chacin and Adrian Ruiz-Arroyo
Sensors 2021, 21(16), 5454; https://0-doi-org.brum.beds.ac.uk/10.3390/s21165454 - 12 Aug 2021
Cited by 3 | Viewed by 1717
Abstract
In many countries, the number of elderly people has grown due to the increase in the life expectancy of the population, many of whom currently live alone and are prone to having accidents that they cannot report, especially if they are immobilized. For [...] Read more.
In many countries, the number of elderly people has grown due to the increase in the life expectancy of the population, many of whom currently live alone and are prone to having accidents that they cannot report, especially if they are immobilized. For this reason, we have developed a non-intrusive IoT device, which, through multiple integrated sensors, collects information on habitual user behavior patterns and uses it to generate unusual behavior rules. These rules are used by our SecurHome system to send alert messages to the dependent person’s family members or caregivers if their behavior changes abruptly over the course of their daily life. This document describes in detail the design and development of the SecurHome system. Full article
(This article belongs to the Special Issue Simplified Sensing for Ambient Assisted Living in Smart Homes)
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22 pages, 8334 KiB  
Article
UWB Radio-Based Motion Detection System for Assisted Living
by Klemen Bregar, Andrej Hrovat and Mihael Mohorčič
Sensors 2021, 21(11), 3631; https://0-doi-org.brum.beds.ac.uk/10.3390/s21113631 - 23 May 2021
Cited by 6 | Viewed by 2982
Abstract
Because of the ageing population, the demand for assisted living solutions that can help prolonging independent living of elderly at their homes with reduced interaction with caregivers is rapidly increasing. One of the most important indicators of the users’ well-being is their motion [...] Read more.
Because of the ageing population, the demand for assisted living solutions that can help prolonging independent living of elderly at their homes with reduced interaction with caregivers is rapidly increasing. One of the most important indicators of the users’ well-being is their motion and mobility inside their homes, used either on its own or as contextual information for other more complex activities such as cooking, housekeeping or maintaining personal hygiene. In monitoring users’ mobility, radio frequency (RF) communication technologies have an advantage over optical motion detectors because of their penetrability through the obstacles, thus covering greater areas with fewer devices. However, as we show in this paper, RF links exhibit large variations depending on channel conditions in operating environment as well as the level and intensity of motion, limiting the performance of the fixed motion detection threshold determined on offline or batch measurement data. Thus, we propose a new algorithm with an online adaptive motion detection threshold that makes use of channel impulse response (CIR) information of the IEEE 802.15.4 ultra-wideband (UWB) radio, which comprises an easy-to-install robust motion detection system. The online adaptive motion detection (OAMD) algorithm uses a sliding window on the last 100 derivatives of power delay profile (PDP) differences and their statistics to set the threshold for motion detection. It takes into account the empirically confirmed observation that motion manifests itself in long-tail samples or outliers of PDP differences’ probability density function. The algorithm determines the online threshold by calculating the statistics on the derivatives of the 100 most recent PDP differences in a sliding window and scales them up in the suitable range for PDP differences with multiplication factors defined by a data-driven process using measurements from representative operating environments. The OAMD algorithm demonstrates great adaptability to various environmental conditions and exceptional performance compared to the offline batch algorithm. A motion detection solution incorporating the proposed highly reliable algorithm can complement and enhance various assisted living technologies to assess user’s well-being over long periods of time, detect critical events and issue warnings or alarms to caregivers. Full article
(This article belongs to the Special Issue Simplified Sensing for Ambient Assisted Living in Smart Homes)
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Review

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29 pages, 1725 KiB  
Review
Review of Technology-Supported Multimodal Solutions for People with Dementia
by Majid Zamiri, Joao Sarraipa, Fernando Luis-Ferreira, Gary Mc Manus, Philip O’Brien, Luis M. Camarinha-Matos and Ricardo Jardim-Goncalves
Sensors 2021, 21(14), 4806; https://0-doi-org.brum.beds.ac.uk/10.3390/s21144806 - 14 Jul 2021
Cited by 5 | Viewed by 2404
Abstract
The number of people living with dementia in the world is rising at an unprecedented rate, and no country will be spared. Furthermore, neither decisive treatment nor effective medicines have yet become effective. One potential alternative to this emerging challenge is utilizing supportive [...] Read more.
The number of people living with dementia in the world is rising at an unprecedented rate, and no country will be spared. Furthermore, neither decisive treatment nor effective medicines have yet become effective. One potential alternative to this emerging challenge is utilizing supportive technologies and services that not only assist people with dementia to do their daily activities safely and independently, but also reduce the overwhelming pressure on their caregivers. Thus, for this study, a systematic literature review is conducted in an attempt to gain an overview of the latest findings in this field of study and to address some commercially available supportive technologies and services that have potential application for people living with dementia. To this end, 30 potential supportive technologies and 15 active supportive services are identified from the literature and related websites. The technologies and services are classified into different classes and subclasses (according to their functionalities, capabilities, and features) aiming to facilitate their understanding and evaluation. The results of this work are aimed as a base for designing, integrating, developing, adapting, and customizing potential multimodal solutions for the specific needs of vulnerable people of our societies, such as those who suffer from different degrees of dementia. Full article
(This article belongs to the Special Issue Simplified Sensing for Ambient Assisted Living in Smart Homes)
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23 pages, 822 KiB  
Review
Unobtrusive Health Monitoring in Private Spaces: The Smart Home
by Ju Wang, Nicolai Spicher, Joana M. Warnecke, Mostafa Haghi, Jonas Schwartze and Thomas M. Deserno
Sensors 2021, 21(3), 864; https://0-doi-org.brum.beds.ac.uk/10.3390/s21030864 - 28 Jan 2021
Cited by 58 | Viewed by 7425
Abstract
With the advances in sensor technology, big data, and artificial intelligence, unobtrusive in-home health monitoring has been a research focus for decades. Following up our research on smart vehicles, within the framework of unobtrusive health monitoring in private spaces, this work attempts to [...] Read more.
With the advances in sensor technology, big data, and artificial intelligence, unobtrusive in-home health monitoring has been a research focus for decades. Following up our research on smart vehicles, within the framework of unobtrusive health monitoring in private spaces, this work attempts to provide a guide to current sensor technology for unobtrusive in-home monitoring by a literature review of the state of the art and to answer, in particular, the questions: (1) What types of sensors can be used for unobtrusive in-home health data acquisition? (2) Where should the sensors be placed? (3) What data can be monitored in a smart home? (4) How can the obtained data support the monitoring functions? We conducted a retrospective literature review and summarized the state-of-the-art research on leveraging sensor technology for unobtrusive in-home health monitoring. For structured analysis, we developed a four-category terminology (location, unobtrusive sensor, data, and monitoring functions). We acquired 912 unique articles from four relevant databases (ACM Digital Lib, IEEE Xplore, PubMed, and Scopus) and screened them for relevance, resulting in n=55 papers analyzed in a structured manner using the terminology. The results delivered 25 types of sensors (motion sensor, contact sensor, pressure sensor, electrical current sensor, etc.) that can be deployed within rooms, static facilities, or electric appliances in an ambient way. While behavioral data (e.g., presence (n=38), time spent on activities (n=18)) can be acquired effortlessly, physiological parameters (e.g., heart rate, respiratory rate) are measurable on a limited scale (n=5). Behavioral data contribute to functional monitoring. Emergency monitoring can be built up on behavioral and environmental data. Acquired physiological parameters allow reasonable monitoring of physiological functions to a limited extent. Environmental data and behavioral data also detect safety and security abnormalities. Social interaction monitoring relies mainly on direct monitoring of tools of communication (smartphone; computer). In summary, convincing proof of a clear effect of these monitoring functions on clinical outcome with a large sample size and long-term monitoring is still lacking. Full article
(This article belongs to the Special Issue Simplified Sensing for Ambient Assisted Living in Smart Homes)
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Other

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10 pages, 935 KiB  
Brief Report
Caregivers’ Profiles Based on the Canadian Occupational Performance Measure for the Adoption of Assistive Technologies
by Francesco Della Gatta, Elisa Fabrizi, Franco Giubilei, María Dolores Grau and Carmen Moret-Tatay
Sensors 2022, 22(19), 7500; https://0-doi-org.brum.beds.ac.uk/10.3390/s22197500 - 03 Oct 2022
Viewed by 1099
Abstract
The COPM (Canadian Occupational Performance Measure) is a tool that is based on the identification of self-perceived performance and satisfaction problems in the performance of occupations, allowing the creation of a hierarchy in the order of the interventions to be carried out, and [...] Read more.
The COPM (Canadian Occupational Performance Measure) is a tool that is based on the identification of self-perceived performance and satisfaction problems in the performance of occupations, allowing the creation of a hierarchy in the order of the interventions to be carried out, and speeding up the identification of the necessary AT (Assistive Technologies). Given the importance of the caregiver’s perception about their own performance in the design of AT, this research examines the caregiver’s profile through the COPM. A sample of 40 caregivers volunteered to participate in the study. A cluster analysis was carried out on the COPM scores. Two caregiver profiles were found in relation to the COPM measure, one with low scores on performance and satisfaction and another with high scores on both of these two variables. The main predictor was found to be the self-perception of performance. The structure was replicated through a hierarchical cluster analysis, where the role of caregivers was of interest. These results are relevant on both a theoretical and practical level. Full article
(This article belongs to the Special Issue Simplified Sensing for Ambient Assisted Living in Smart Homes)
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