VSF: An Energy-Efficient Sensing Framework using Virtual Sensors

Chayan Sarkar, Vijay S. Rao, R. Venkatesha Prasad, Sankar Narayan Das, Sudip Misra, and Athanasios Vasilakos, "VSF: An Energy-Efficient Sensing Framework using Virtual Sensors", Sensors Journal, IEEE, 2016.

Abstract

In this article, we describe Virtual Sensing Framework (VSF), which reduces sensing and data transmission activities of nodes in a sensor network without compromising on the sensing interval and the data quality. VSF creates virtual sensors at the sink to exploit the temporal and spatial correlations amongst sensed data. Using an adaptive model at every sensing iteration, the virtual sensors can predict multiple consecutive sensed data for all the nodes with the help of sensed data from a few active nodes. We show that even when the sensed data represents different physical parameters (e.g., temperature and humidity), our proposed technique still works making it independent of physical parameter sensed. Applying our technique can substantially reduce data communication among the nodes leading to reduced energy consumption per node yet maintaining high accuracy of the sensed data. In particular, using VSF on the temperature data from IntelLab and GreenOrb dataset, we have reduced the total data traffic within the network up to 98% and 79%, respectively. Corresponding average root mean squared error of the predicted data per node is as low as 0.36°C and 0.71°C, respectively. This work is expected to support deployment of many sensors as part of Internet of Things in large scales.

BibTex entry

@article{sarkar2016vsf,
    title={VSF: An Energy-Efficient Sensing Framework Using Virtual Sensors},
    author={Sarkar, Chayan and Rao, Vijay S and Prasad, R Venkatesha and Das, Sankar Narayan and Misra, Sudip and Vasilakos, Athanasios},
    journal={IEEE Sensors Journal},
    volume={16},
    number={12},
    pages={5046--5059},
    year={2016},
    publisher={IEEE}
}