National Physical Laboratory

Wireless Sensor Networks

Wireless sensor

Wireless sensor networks (WSN) are a significant enabling growing technology in many areas of measurement, security, structural health and environmental monitoring. 'Wireless' includes broadcast communications between sensors and sensors and a central server, but also communication by other methods (e.g. optical, acoustical). Multiple drivers are behind this including cost, the ability to easily upgrade, the removal or circumventing of failure modes that exist in wired networks and the ability to create a distributed self-validating intelligent network.

NPL is active in this emerging area to address several challenging aspects of calibration for these systems. Whereas 'traditional' metrology often concentrates on the calibration of single instruments or parameters, WSNs represent new types of distributed measurement systems that require new metrology solutions to characterise.

The areas NPL is focusing on include:

  • Integrity of data passed through the system
  • Improved/quantified synchronisation
  • Robustness to real environments/interference
  • False positive/negative quantification for a given higher-level decision
  • Uncertainty analysis of the distributed measurement system
  • Optimisation of system when subjected to real environments
  • Data fusion for high-level decision making

Many of our projects are collaborative and we welcome potential future partners. Please contact Tian Hong Loh for more details.

Last Updated: 26 Jul 2012
Created: 4 May 2010


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