Event region detection refers to the process of detecting regions with distinguishable characteristics in an environment, and it can find a broad range of applications from environmental monitoring to system health management. The problem of online dynamic event region detection is studied here. The spatiotemporal relationship of the evolving event regions is assumed and modeled by dynamic Markov random fields. Observations are collected from a network of sensors distributed in the field. To provide detection results at each time step, a distributed event region tracking algorithm is proposed. The system dynamics and information collected from neighbors are used to predict the underlying hypothesis at each sensor node and its local observation is used for update. Mean field approximation is adopted in the algorithm for tractability. The performance of the proposed algorithm is analyzed both theoretically and through simulations. By comparing with static event region detection algorithms and a centralized algorithm (with certain approximation), we demonstrate the effectiveness and efficiency of the proposed algorithm, especially its robustness in low signal-to-noise ratio (SNR) situations.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Online Dynamic Event Region Detection Using Distributed Sensor Networks


    Beteiligte:
    Tao Wu (Autor:in) / Qi Cheng (Autor:in)


    Erscheinungsdatum :

    01.01.2014


    Format / Umfang :

    909426 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    A Space-Time Fusion Scheme for Dynamic-Event Region Detection in Sensor Networks

    Wang, Tsang-Yi / Yang, Ming-Hsun / Wu, Jwo-Yuh | IEEE | 2016


    Self-* Distributed Query Region Covering in Sensor Networks

    Ajoy Datta / Maria Gradinariu / Preethi Linga et al. | AIAA | 2006


    Adaptive Nonassisted Distributed Detection in Sensor Networks

    Medina Sotomayor, Cesar Augusto / Pereira David, Rodrigo / Sampaio-Neto, Raimundo | IEEE | 2017


    Valve Event Detection Using Knock Sensor Signals

    Pakkala, J. E. / Scheuerell, M. J. | SAE Technical Papers | 2007