4.5 Article

Measuring air quality in city areas by vehicular wireless sensor networks

期刊

JOURNAL OF SYSTEMS AND SOFTWARE
卷 84, 期 11, 页码 2005-2012

出版社

ELSEVIER SCIENCE INC
DOI: 10.1016/j.jss.2011.06.043

关键词

Micro-climate monitoring; Opportunistic communication; Pervasive computing; Vehicular sensor network; Wireless sensor network

资金

  1. MoE
  2. NSC [97-3114-E-009-001, 97-2221-E-009-142-MY3, 98-2219-E-009-019, 98-2219-E-009-005, 99-2218-E-009-005]
  3. ITRI, Taiwan
  4. III, Taiwan
  5. D-Link
  6. Intel

向作者/读者索取更多资源

This paper considers a micro-climate monitoring scenario, which usually requires deploying a large number of sensor nodes to capture environmental information. By exploiting vehicular sensor networks (VSNs), it is possible to equip fewer nodes on cars to achieve fine-grained monitoring. Specifically, when a car is moving, it could conduct measurements at different locations, thus collecting lots of sensing data. To achieve this goal, this paper proposes a VSN architecture to collect and measure air quality for microclimate monitoring in city areas, where nodes' mobility may be uncontrollable (such as taxis). In the proposed VSN architecture, we address two network-related issues: (1) how to adaptively adjust the reporting rates of mobile nodes to satisfy a target monitoring quality with less communication overhead and (2) how to exploit opportunistic communications to reduce message transmissions. We propose algorithms to solve these two issues and verify their performances by simulations. In addition, we also develop a ZigBee-based prototype to monitor the concentration of carbon dioxide (CO2) gas in city areas. (C) 2011 Elsevier Inc. All rights reserved.

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