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System Architecture Directions for Networked Sensors

System Architecture Directions for Networked Sensors. Jason Hill, Rober Szewczyk, Alec Woo, Seth hollar, David Culler & Kristofer Pister Presented by Israel Martínez-Arredondo. Outline. Networked Sensor Characteristics Hardware Organization Tiny Microthreading Operating System (TinyOS)

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System Architecture Directions for Networked Sensors

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  1. System Architecture Directions for Networked Sensors Jason Hill, Rober Szewczyk, Alec Woo, Seth hollar, David Culler & Kristofer Pister Presented by Israel Martínez-Arredondo

  2. Outline • Networked Sensor Characteristics • Hardware Organization • Tiny Microthreading Operating System (TinyOS) • TinyOS Design • Components • Evaluation

  3. Networked Sensor Characteristics • Small Physical size and low power consumption • Concurrency-intensive Operation • Limited Physical Parallelism and Controller Hierarchy • Diversity in Desing and Usage • Robust Operation

  4. Hardware Organization • Three sleep modes (idle, power down & power save) • Three LEDs to represent outputs • Photo-sensor • Radio • Temperature Sensor • Serial Port

  5. Tiny Microthreading OS (TinyOS) • Requirements (small physical size, modest active power load & tiny inactive load) • Two-level scheduling structure • High levels of concurrency

  6. Tiny OS Design • Tiny Scheduler • Components • Frame • Tasks • Event Handlers • Command Handlers

  7. Component Types • Hardware Abstractions • Synthetic Hardware • High Level Software Components 

  8. High Level Software Components

  9. Putting it All Together

  10. Evaluation • Small Physical Size • Concurrency-Intensive Operations • Efficient Modularity • Limited Physical Parallelism and Controller Hierarchy • Diversity in Usage and Robust Operation

  11. Small Physical Size

  12. Concurrency-Intensive Operations

  13. Efficient Modularity

  14. Evaluation (Cont’d) • Limited Physical Parallelism and Controller Hierarchy • Diversity in Usage and Robust Operation

  15. Discussion • What are potential avenues for further work and improvements? • RFIDs • Characteristics • Usage • Downside

  16. References • Loren P. Clare, Esther H. Jennings, Jay L. Gao, “Performance Evaluation Modeling of Networked Sensors”, Ca, USA • Adrian Perrig, Robert Szewczk, Victor Wen, David Culler, “Security Protocols for Sensor Networks” University of California • RFID • http://www.aimglobal.org/technologies/rfid/ • http://news.com.com/2010-1069-980325.html • http://www.rfidsociety.org/

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