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ISEL - Eng. Elect. Tel. Comp. - Comunicações

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http://hdl.handle.net/10400.21/230

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Browsing ISEL - Eng. Elect. Tel. Comp. - Comunicações by Field of Science and Technology (FOS) "Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática"

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  • Design of a Cardiopulmonary antenna for vital signs monitoring robust to different subjects
    Publication . Cardoso, João; Pinho, Pedro; Gouveia, Carolina; Albuquerque, Daniel
    With the advancement of wireless diagnosis and treatment technologies, antennas deployed close to the human body are now widely used. The use of on-body antennas, along with other technologies, presents itself as an innovative method for detecting and monitoring vital signs. These antennas can be attached directly on the body or on clothes, making it comfortable to use and less invasive when compared to conventional methods, allowing at-home monitoring of elderly patients or high risk workers with a single antenna. In this paper, a robust high bandwidth patch antenna was developed to operate in the dedicated Industrial, Scientific and Medical frequency band, namely at 2.45 GHz, capable of monitoring vital signs in any subject. This work presents the design and results of a robust cardiopulmonary antenna, to be further used to monitor the respiratory rate of five different subjects, each one with different physiognomy.
    2023-05-31Conference paper Open access Show more
  • Real-time GPS indoor for USV tracking using lookup table
    Publication . Vieira, Fábio; Teodoro, Pedro; Jorge, Pedro Mendes
    This study introduces an approach that utilizes Lookup Tables (LUT) to enable real-time tracking of an Unmanned Surface Vehicle (USV) in an indoor setting, using a fish-eye camera. The proposed method streamlines image processing and achieves O(1) complexity, significantly reducing application run time. The paper also outlines the process of calibrating the fish-eye camera to correct image distortion, computing the homography matrix for re-projection, and obtaining a virtual top view of the camera’s field of view. The paper provides a detailed explanation of the replacement of the undistortion and re-projection steps with the new LUT method. Experimental results demonstrate a significant enhancement in the process’s run time, making it feasible for real-time tracking, regardless of the image size.
    2023-05-25Conference paper Open access Show more