Energy profiling in practical sensor networks: Identifying hidden consumers

James Brusey, John Kemp, Elena Gaura, Ross Wilkins, M. Allen

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Reducing energy consumption of wireless sensor nodes extends battery life and / or enables the use of energy harvesting and thus makes feasible many applications that might otherwise be impossible, too costly or require constant maintenance. However, theoretical approaches proposed to date that minimise WSN energy needs generally lead to less than expected savings in practice. We examine experiences of tuning the energy profile for two near-production wireless sensor systems and demonstrate the need for (a) microbenchmark-based energy consumption profiling, (b) examining start-up costs, and (c) monitoring the nodes during long-term deployments. The tuning exercise resulted in reductions in energy consumption of a) 93% for a multihop Telos-based system (average power 0.029 mW) b) 94.7% for a single hop Ti- 8051-based system during startup, and c) 39% for a Ti- 8051 system post start-up. The work reported shows that reducing the energy consumption of a node requires a whole system view, not just measurement of a “typical” sensing cycle. We give both generic lessons and specific application examples that provide guidance for practical WSN design and deployment.
LanguageEnglish
Pages6072-6080
JournalIEEE Sensors Journal
Volume16
Issue number15
DOIs
Publication statusPublished - 18 May 2016

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energy consumption
Sensor networks
Energy utilization
sensors
Tuning
tuning
energy
Energy harvesting
physical exercise
Sensor nodes
maintenance
electric batteries
costs
cycles
Monitoring
Sensors
profiles
Costs

Bibliographical note

The full text is also available from: http://dx.doi.org/10.1109/JSEN.2016.2570420

This article is currently in press. Full citation details will be uploaded when available.
© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keywords

  • Current measurement
  • Engines
  • Monitoring
  • Temperature sensors
  • Wireless communication
  • Wireless sensor networks

Cite this

Energy profiling in practical sensor networks: Identifying hidden consumers. / Brusey, James; Kemp, John; Gaura, Elena; Wilkins, Ross; Allen, M.

In: IEEE Sensors Journal, Vol. 16, No. 15, 18.05.2016, p. 6072-6080.

Research output: Contribution to journalArticle

Brusey, James ; Kemp, John ; Gaura, Elena ; Wilkins, Ross ; Allen, M. / Energy profiling in practical sensor networks: Identifying hidden consumers. In: IEEE Sensors Journal. 2016 ; Vol. 16, No. 15. pp. 6072-6080.
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