Wireless Sensor and Actuator Networks for Lighting Energy ...

Chapter 10 Conclusion and Future Research
10.1 Conclusion
This section provides the overall conclusions and findings of the research
covered in this dissertation. This dissertation research has been devoted to the
development of technologies for energy-efficient intelligent lighting systems harnessing
wireless sensor and actuator network technologies. Prototypes of wireless-enabled
photosensors and ballast actuating interfaces were developed as a proof of concept for
wirelessly connected and individually addressable lighting components.
Starting with sensing technologies for massive-deployed, energy-constrained
and disturbance-prone small photosensors, the mote-FVF sensor validation and fusion
algorithm presents an efficient method extracting pertinent lighting information while
isolating faulty or disturbed sensor readings. The adaptive sensing strategy dynamically
adapts the sensing rates of the photosensors to changes in daylight, and hence optimizes
the timing for energy-hungry wireless communication for real-time feedback lighting
control. Moving from passively sensing to actively affecting the environment, the
optimal lighting actuation algorithm delivers a lighting condition that simultaneously
minimizes energy usage and satisfies occupants’ lighting preferences by leveraging the
individual addressability of the wirelessly networked ballast actuation modules.
The human subject test provides valuable insight and recommendations for
future implementation of the research system. The final integrated wireless-enabled
intelligent lighting system implementation demonstrates the feasibility and superiority
of the research system in terms of energy savings and user satisfaction. The encouraging
188