Essays about: "Wi-Fi Sensorer"

Showing result 1 - 5 of 7 essays containing the words Wi-Fi Sensorer.

  1. 1. A study of methods to synchronize different sensors between two smartphones

    University essay from KTH/Hälsoinformatik och logistik

    Author : John Abdulnoor; Ramy Gawriyeh; [2021]
    Keywords : Sensors; android; smartphones; synchronization; internal clocks; Cristian’s algorithm; Marzullo’s algorithm; round-trip time; Wi-Fi Direct; Sensorer; android; smartphones; synkronisering; interna klockor; Cristians algoritm; Marzullos algoritm; round-trip time; Wi-Fi Direct;

    Abstract : Obtaining data simultaneously from different sensors located on different mobile devices can be useful for applications such as sports and medicine. In order for the data from the different sensors to be combined for analysis, the mobile devices need to be time synchronized first. READ MORE

  3. 2. Smartphone Based Indoor Positioning Using Wi-Fi Round Trip Time and IMU Sensors

    University essay from Linköpings universitet/Institutionen för datavetenskap

    Author : Gustav Aaro; [2020]
    Keywords : Wi-Fi RTT; Indoor positioning; FTM; Android; Smartphone; Sensor fusion; IPS;

    Abstract : While GPS long has been an industry standard for localization of an entity or person anywhere in the world, it loses much of its accuracy and value when used indoors. To enable services such as indoor navigation, other methods must be used. A new standard of the Wi-Fi protocol, IEEE 802. READ MORE

  4. 3. Classification of Wi-Fi Sensor Data for a Smarter City : Probabilistic Classification using Bayesian Statistics

    University essay from Umeå universitet/Institutionen för matematik och matematisk statistik

    Author : Elin Tyni; Johanna Wikberg; [2019]
    Keywords : ;

    Abstract : As cities are growing with an increasing number of residents, problems with the traffic such as congestion and larger emission arise. The city planners have challenges with making it as easy as possible for the residents to commute and in as large scale as possible to avoid vehicles. READ MORE

  5. 4. A Multi-Target Graph-Constrained HMM Localisation Approach using Sparse Wi-Fi Sensor Data

    University essay from KTH/Optimeringslära och systemteori

    Author : Simon Danielsson; Jakob Flygare; [2018]
    Keywords : Hidden Markov Model; Localisation; Wi-Fi Sensors; Forward-Backward Algorithm; Baum-Welch Algorithm; Machine Learning; Time Series Analysis.; Hidden Markov Model; Lokalisering; Wi-Fi Sensorer; Forward-Backward Algoritm; Baum-Welch Algoritm; Maskinlärning; Tidsserieanalys.;

    Abstract : This thesis explored the possibilities of using a Hidden Markov Model approach for multi-target localisation in an urban environment, with observations generated from Wi-Fi sensors. The area is modelled as a network of nodes and arcs, where the arcs represent sidewalks in the area and constitutes the hidden states in the model. READ MORE

  6. 5. Passive gesture recognition on unmodified smartphones using Wi-Fi RSSI

    University essay from KTH/Robotik, perception och lärande, RPL

    Author : Mohamed Abdulaziz Ali Haseeb; [2017]
    Keywords : Wi-Fi; RSSI; gesture recognition; RNN; LSTM; neural network; deep learning;

    Abstract : The smartphone is becoming a common device carried by hundreds of millions of individual humans worldwide, and is used to accomplish a multitude of different tasks like basic communication, internet browsing, online shopping and fitness tracking. Limited by its small size and tight energy storage, the human-smartphone interface is largely bound to the smartphones small screens and simple keypads. READ MORE