Dynamic and Distributed Intelligence over Smart Devices, Internet of Things Edges, and Cloud Computing for Human Activity Recognition Using Wearable Sensors
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Published:2024-01-02
Issue:1
Volume:13
Page:5
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ISSN:2224-2708
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Container-title:Journal of Sensor and Actuator Networks
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language:en
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Short-container-title:JSAN
Author:
Wazwaz Ayman1ORCID, Amin Khalid2, Semary Noura2, Ghanem Tamer2
Affiliation:
1. Computer Engineering Department, College of Information Technology and Computer Engineering, Palestine Polytechnic University, Hebron P.O. Box 198, Palestine 2. Department of Information Technology, Faculty of Computers and Information, Menoufia University, Gamal Abdel Nasser Street, Shebin El Kom P.O. Box 32511, Egypt
Abstract
A wide range of applications, including sports and healthcare, use human activity recognition (HAR). The Internet of Things (IoT), using cloud systems, offers enormous resources but produces high delays and huge amounts of traffic. This study proposes a distributed intelligence and dynamic HAR architecture using smart IoT devices, edge devices, and cloud computing. These systems were used to train models, store results, and process real-time predictions. Wearable sensors and smartphones were deployed on the human body to detect activities from three positions; accelerometer and gyroscope parameters were utilized to recognize activities. A dynamic selection of models was used, depending on the availability of the data and the mobility of the users. The results showed that this system could handle different scenarios dynamically according to the available features; its prediction accuracy was 99.23% using the LightGBM algorithm during the training stage, when 18 features were used. The prediction time was around 6.4 milliseconds per prediction on the smart end device and 1.6 milliseconds on the Raspberry Pi edge, which can serve more than 30 end devices simultaneously and reduce the need for the cloud. The cloud was used for storing users’ profiles and can be used for real-time prediction in 391 milliseconds per request.
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