The flooding time synchronization protocol
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Low-power clock synchronization using electromagnetic energy radiating from AC power lines
Proceedings of the 7th ACM Conference on Embedded Networked Sensor Systems
Exploiting FM radio data system for adaptive clock calibration in sensor networks
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
WizSync: Exploiting Wi-Fi Infrastructure for Clock Synchronization in Wireless Sensor Networks
RTSS '11 Proceedings of the 2011 IEEE 32nd Real-Time Systems Symposium
FLIGHT: clock calibration using fluorescent lighting
Proceedings of the 18th annual international conference on Mobile computing and networking
| Hi-index | 0.00 |
In this demo, we propose a novel clock calibration approach called FLIGHT, which leverages the fact that the fluorescent light intensity changes with a stable period that equals half of the alternating current's. By tuning to the light emitted from indoor fluorescent lamps, FLIGHT can intelligently extract the light period information and achieve network wide time calibration by referring to such a common time reference. We address a series of practical challenges and implement FLIGHT in TelosB motes. In this demonstration, we will show that by taking advantage of the stability of the AC frequency, the detected light intensity, even from different lamps, exhibits a consistent and stable period. FLIGHT can achieve tightly synchronized time with low energy consumption. In addition, since FLIGHT is independent to the network message exchange, time synchronization can be retained even when the network is temporarily disconnected. Such characteristics particularly suit various mobility-enabled scenarios.