Jesus, Cassandra Sofia dos SantosRosa, Ana RafaelaDionísio, Rogério Pais2023-03-092023-03-092023JESUS, C.S. dos Santos ; ROSA, A.R. ; DIONÍSIO, R.P. (2023) - Nyon: a ubiquitous fall detection device for elders. In BEN AHMED [et al.] (eds) - Innovations in smart cities applications : Proceedings of the International Conference on Smart Cities Applications, 7, SCA, 2022. Springer Cham. Vol 6, p. 175-184. (Lecture Notes in Networks and Systems ; vol. 629). DOI https://doi.org/10.1007/978-3-031-26852-6_16http://hdl.handle.net/10400.11/8399Falls are one of the main causes of mortality and morbidity in the elderly worldwide. This had let to the research and development of electronic fall-detection systems. We propose a complete fall-detection system, that combines a wearable device (called Nyon) and a message microservice (for email and SMS) to alert caregiver every time a fall occurs. The wearable uses a simple threshold method and has the capability of search and switch between Wi-Fi and Bluetooth, using the available communication technology when a fall occurs. The results have shown that the wearable autonomy is adequate for a daily use and the server microservices are reliable and deliver a message to the caregiver every time a fall alert occurs. Several improvements are planned to increase the autonomy and range of the wearable device.engWi-FiBluetoothMQTTFall detection algorithmROCThreshold detectionconference object10.1007/978-3-031-26852-6_16