{"id":1159,"date":"2023-01-18T12:12:52","date_gmt":"2023-01-18T11:12:52","guid":{"rendered":"https:\/\/www.uni.lu\/snt-fr\/events\/phd-defense-signal-processing-contributions-to-contactless-monitoring-of-vital-signs-using-radar\/"},"modified":"2023-01-18T12:12:52","modified_gmt":"2023-01-18T11:12:52","slug":"phd-defense-signal-processing-contributions-to-contactless-monitoring-of-vital-signs-using-radar","status":"publish","type":"events","link":"https:\/\/www.uni.lu\/snt-fr\/events\/phd-defense-signal-processing-contributions-to-contactless-monitoring-of-vital-signs-using-radar\/","title":{"rendered":"PhD defense: Signal Processing Contributions to Contactless Monitoring of Vital Signs Using Radar"},"content":{"rendered":"<section class=\"wp-block-unilux-blocks-free-section section\"><div class=\"container xl:max-w-screen-xl\"><p>You are all cordially invited to attend the <strong>PhD defense of\u00a0Gabriel \u00a0on<\/strong><strong>Belatro<\/strong> <strong>Monday 20 February\u00a02023\u00a0at\u00a002:30 pm,\u00a0in seminar room E004\/E005 (JFK Building)<\/strong>.\u00a0<\/p><p><strong>Title:<\/strong>\u00a0Signal Processing Contributions to Contactless Monitoring of Vital Signs Using Radars<\/p><p><strong>\u00a0<\/strong><\/p><p><strong>Members of the defense committee<\/strong>:<\/p><p>Prof. Dr.\u00a0Bj\u00f6rn Ottersten, University of Luxembourg, Chairman<\/p><p>Prof. Dr. Udo Schroeder, University of Luxembourg, Vice-chairman<\/p><p>Prof. Dr. Bhavani Shankar, University of Luxembourg, Supervisor<\/p><p>Prof. Dr. Mohammed Jahangir, Birmingham University, Member\u00a0<\/p><p>Dr. Avik Santra, Infenion US, Member<\/p><p>\u00a0<\/p><p><strong>Abstract<\/strong>:<\/p><p>Vital signs are a group of biological indicators that show the status of the body\u2019s life-sustaining functions. They provide an objective measurement of the essential physiological\u00a0functions of a living organism, and their assessment is the critical first step for any clinical\u00a0evaluation. Monitoring vital sign information provides valuable insight into the patient\u2019s\u00a0condition, including how they are responding to medical treatment and, more importantly,\u00a0whether the patient is deteriorating. However, conventional contact-based devices are\u00a0inappropriate for long-term continuous monitoring. Besides mobility restrictions and\u00a0stress, they can cause discomfort, and epidermal damage, and even lead to pressure\u00a0necrosis. On the other hand, the contactless monitoring of vital signs using radar devices\u00a0has several advantages. Radar signals can penetrate through different materials and are\u00a0not affected by skin pigmentation or external light conditions. Additionally, these devices\u00a0preserve privacy, can be low-cost, and transmit no more power than a mobile phone.\u00a0Despite recent advances, accurate contactless vital sign monitoring is still challenging in\u00a0practical scenarios. The challenge stems from the fact that when we breathe, or when the\u00a0heart beats, the tiny induced motion of the chest wall surface can be smaller than one\u00a0millimeter. This means that the vital sign information can be easily lost in the background\u00a0noise, or even masked by additional body movements from the monitored subject. This\u00a0thesis aims to propose innovative signal-processing solutions to enable the contactless\u00a0monitoring of vital signs in practical scenarios. Its main contributions are threefold:\u00a0a new algorithm for recovering the chest wall movements from radar signals; a novel\u00a0random body movement and interference mitigation technique; and a simple, yet robust\u00a0and accurate, heart rate estimation framework. These contributions were tested under\u00a0different operational conditions and scenarios, spanning ideal simulation settings, real\u00a0data collected while imitating common working conditions in an office environment, and\u00a0a complete validation with premature babies in a critical care environment. The proposed\u00a0algorithms were able to precisely recover the chest wall motion, effectively reducing\u00a0the interfering effects of random body movements, and allowing clear identification of\u00a0different breathing patterns. This capability is the first step toward frequency estimation\u00a0and early non-invasive diagnosis of cardiorespiratory problems. In addition, most of the\u00a0time, the adaptive estimation framework provided breathing and heart rate estimates\u00a0within the predefined error intervals, being capable of tracking the reference values\u00a0under different scenarios. Our findings shed light on the strengths and limitations of\u00a0this technology and lay the foundation for future studies toward a complete contactless\u00a0solution for vital signs monitoring.<\/p><\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":0,"featured_media":1160,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"featured_image_focal_point":[],"show_featured_caption":false,"ulux_newsletter_groups":"","uluxPostTitle":"","uluxPrePostTitle":"","_trash_the_other_posts":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"event_start_date":"2023-02-20 14:30:00","event_end_date":"2023-02-20 16:30:00","event_speaker_name":"Gabriel Belatro","event_speaker_link":"","event_is_online":false,"event_location":"Campus Kirchberg, JFK, room E004\/005 ","event_street":"","event_location_link":"","event_zip_code":"","event_city":"","event_country":"LU"},"events-topic":[],"events-type":[],"organisation":[183],"authorship":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v22.3) - 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