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    Wyświetlanie 1-4 z 4
    Tytuł:
    Efficient relay node management method for BLE MESH networks
    Autorzy:
    Bęben, Andrzej
    Bąk, Andrzej
    Sosnowski, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/226000.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Bluetooth Low Energy
    BLE MESH
    relay management
    optimisation
    IoT
    Opis:
    The Bluetooth Low Energy (BLE) MESH network technology gains popularity in low duty IoT systems. Its advantage is a low energy consumption that enables long lifetime of IoT systems. The paper proposes and evaluates new MRT management methods, i.e. exact and heuristic, that improves energy efficiency of BLEMESH network by minimizing the number of active relay nodes. The performed experiments confirm efficiency of the MRT methods resulting in significantly lower energy consumption of BLE MESH network.
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 1; 29-35
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Autonomous Wearable Sensor Node for Long-Term Healthcare Monitoring Powered by a Photovoltaic Energy Harvesting System
    Autorzy:
    Mohsen, Saeed
    Zekry, Abdelhalim
    Youssef, Khaled
    Abouelatta, Mohamed
    Powiązania:
    https://bibliotekanauki.pl/articles/227109.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    energy harvesting
    healthcare monitoring
    wearable sensor nodes
    photovoltaic
    Bluetooth low energy (BLE)
    Opis:
    In this paper, an autonomous wearable sensor node is developed for long-term continuous healthcare monitoring. This node is used to monitor the body temperature and heart rate of a human through a mobile application. Thus, it includes a temperature sensor, a heart pulse sensor, a low-power microcontroller, and a Bluetooth low energy (BLE) module. The power supply of the node is a lithium-ion rechargeable battery, but this battery has a limited lifetime. Therefore, a photovoltaic (PV) energy harvesting system is proposed to prolong the battery lifetime of the sensor node. The PV energy harvesting system consists of a flexible photovoltaic panel, and a charging controller. This PV energy harvesting system is practically tested outdoor under lighting intensity of 1000 W/m². Experimentally, the overall power consumption of the node is 4.97 mW and its lifetime about 246 hours in active-sleep mode. Finally, the experimental results demonstrate long-term and sustainable operation for the wearable sensor node.
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 2; 267-272
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Localization System Supporting People with Cognitive Impairment and Their Caregivers
    Autorzy:
    Kolakowski, Jerzy
    Djaja-Josko, Vitomir
    Kolakowski, Marcin
    Cichocki, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/225971.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    active and assisted living (AAL)
    Bluetooth Low Energy
    dementia
    internet of things
    localization
    UWB
    Opis:
    Localization systems are an important component of Active and Assisted Living (AAL) platforms supporting persons with cognitive impairments. The paper presents a positioning system being a part of the platform developed within the IONIS European project. The system’s main function is providing the platform with data on user mobility and localization, which would be used to analyze his/her behavior and detect dementia wandering symptoms. An additional function of the system is localization of items, which are frequently misplaced by dementia sufferers. The paper includes a brief description of system’sarchitecture, design of anchor nodes and tags and exchange of data between devices.both localization algorithms for user and item positioning are also presented. Exemplary results illustrating the system’s capabilities are also included.
    Źródło:
    International Journal of Electronics and Telecommunications; 2020, 66, 1; 125-131
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wireless Communication Solution for Distributed Structural Health Monitoring
    Autorzy:
    Andrzejczak, A.
    Łęczycki, P.
    Makowski, M.
    Pękosławski, B.
    Pietrzak, P.
    Napieralski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/226561.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    wireless sensor networks
    IEEE 802.15.4
    Bluetooth Low Energy
    DASH7
    IEEE 802.11n
    ZigBee
    weightless
    structural health monitoring
    Opis:
    This paper describes a design of wireless distributed SHM (Structure Health Monitoring) system with a particular emphasis on comparison of wireless communication standards. The presented solution is being deployed in the TULCOEMPA project. Several wireless communication standards are compared, with their benefits, disadvantages and typical areas of application. A choice of proper ISM (Industrial Scientific Medical) band and reasons for use of Wireless Sensor Networks are also discussed. The last part of this paper presents the proposed structure and designed prototype. The chosen architecture of the system and the program algorithm used for communication and measurements are described.
    Źródło:
    International Journal of Electronics and Telecommunications; 2013, 59, 2; 177-184
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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