Browsing by Author "Kehelella, P"

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    PublicationOpen Access
    IOT Based Smart Microgreen Sprouter
    (Springer, Cham, 2022-01) Rankothge, V; Kehelella, P; Perera, D; Kanchana, B. C; Peiris, R; Madushan, K
    This research paper focuses on enhancing indoor farming technologies with an emerging technology: Internet of Things (IoT). The proposed approach creates a microgreen sprouter unit that automates the process of monitoring and providing optimum growing conditions with the minimum human supervision. This model can be used to achieve healthy growth of microgreen by providing ideal ventilation, moisture, humidity, light, and temperature levels, which prevents sprouts from ultraviolet radiation and pest attacks. Users can track the growth rate of sprouts and change the moisture, humidity, light and temperature levels. Our prototype implementation has been tested for mung-beans sprouts and validated for its accuracy and efficiency
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    PublicationEmbargo
    Modeling Vision Utility for Side-by-Side Navigation of Robot-Human Pairs
    (IEEE, 2019-10-17) Jayawardena, C; Kehelella, P; De Silva, R
    Side-by-side robot navigation has significant direct benefits; especially when robotic wheelchairs are used. In addition to navigation issues faced by any mobile robot, side-by-side navigation has some other challenges as well. Maintaining side-by-side formation, avoiding collisions with minimal disturbance to the side-by-side formation, and maintaining the optimal social relationship are some of those challenges. This paper presents a novel decision making model for human-robot side by side navigation. The development of the model was based on observations of real-world human behaviour and data collections done through a user study. The developed model was calibrated and tested using a simulator as-well-as a laboratory experiment.
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    PublicationEmbargo
    SmartOne: IoT-based Smart Platform to Manage Personal Water Usage
    (IEEE, 2019-11-21) Vithanage, J; de Silva, R; Karunaratne, K; Silva, M. D; Bogoda, P; Kankanamge, R; Kehelella, P; Jayakody, K. D; Wijekoon, J
    The origin of life is water, and consistent water consumption is essential for the proper functioning of human organs. Thus, regular hydration is vital for human beings because improper hydration leads to diseases such as cholera, diarrhea, bladder stones, and kidney issues. However, maintaining a sufficient and regulated water intake is challenging for many personal as the livelihood, i.e., busy life schedule, is getting complicated, and sometimes due to limited access to clean water. To this end, the SmartOne water bottle was introduced to enable effective management of daily water requirements and to ensure users drink good quality water. The initial prototype of the water bottle was implemented as a combination of hardware and mobile application, and it was evaluated in terms of measuring water goal, quality, drink and sift event detection.