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RT-Link 2005
1. RT-Link Real-Time Sensor Network Platform Rahul Mangharam, Anthony Rowe & Prof. Raj Rajkumar {rahulm, agr, raj}@ece.cmu.edu Carnegie Mellon University February 2006
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3. FireFly Sensor Board Features Data rate: 250Kbps operating in 2.4GHz unlicensed spectrum Software: Full-featured system with self-forming and self-healing network Sensors: Detects sound, light, motion, humans, temperature Communication Range: 100m indoor and 150m outdoor Storage: 1MB on-board flash memory to store images or additional programs
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5. FireFly Time Synchronization Boards AM/FM Receiver for Indoors Atomic Clock for Outdoors All nodes are time synchronized to a global clock Time Synchronization provides: 1. Minimal Energy Consumption: We maximize the sleep time 2. High Network Throughput: Nodes coordinate sending and receiving 3. Reliable and timely delivery of images and audio streams
6. RT-Link: Time Slot Allocation 10 second Time-sync Cycle Frame Time Sync Pulse Supports Fixed, Mobile and Gateway Nodes 24 slots 8 slots Contention Slots Scheduled Slots
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