Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/75A47887-79B5-46FD-A44F-107B03227179 | ||
| Year | 2014 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | E. Kampianakis, J. Kimionis, K. Tountas, C. Konstantopoulos, E. Koutroulis and A. Bletsas, "Wireless Environmental Sensor Networking with Analog Scatter Radio & Timer Principles", IEEE Sensors Journal, vol. 14, no. 10, pp. 3365 – 3376, Oct. 2014. DOI: 10.1109/JSEN.2014.2331704 https://doi.org/10.1109/JSEN.2014.2331704 | ||
| Appears in Collections |
Environmental variables monitoring with wireless sensor networks (WSNs) is invaluable for precision agriculture applications. However, the effectiveness of existing low-power, conventional (e.g., ZigBee-type) radios in large-scale deployments is limited by power consumption, cost, and complexity constraints, while the existing WSN solutions employing nonconventional, scatter-radio principles have been restricted to communication ranges of up to a few meters. In this paper, the development of a novel analog scatter-radio WSN is presented, that employs semipassive sensor/tags in bistatic topology (i.e., carrier emitter placed in a different location from the reader), consuming <;1 mW of power, with communication range exceeding 100 m. The experimental results indicate that the multipoint surface fitting calibration, in conjunction with the employed two-phase filtering process, both provide a mean absolute error of 1.9% environmental relative humidity for a temperature range of 10 °C-50 °C. In addition, the energy consumption per measurement of the proposed environmental monitoring approach can be lower than that of conventional radio WSNs. Finally, the proposed approach operational characteristics are presented through a real-world network deployment in a tomato greenhouse.
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