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PRISM: Platform for Remote Sensing using Smartphones

PRISM: Platform for Remote Sensing using Smartphones. Tathagata Das , Prashanth Mohan, Venkata N. Padmanabhan , Ramachandran Ramjee , Asankhaya Sharma. Motivation. Simplify the development of opportunistic and participatory sensing using mobile smartphones. Solution. Make a Platform

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PRISM: Platform for Remote Sensing using Smartphones

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  1. PRISM: Platform for Remote Sensing using Smartphones TathagataDas, PrashanthMohan, VenkataN. Padmanabhan, Ramachandran Ramjee, AsankhayaSharma

  2. Motivation • Simplify the development of opportunistic and participatory sensing using mobile smartphones.

  3. Solution • Make a Platform • Generality • Security • Scalability

  4. PRISM DESIGN

  5. Prism Design • Registration • soft-state and automatically expire • APIs • Two-level predicate • Deployment mode • Update optimization • Adaptive updates: p = min(1, ρ ∗ n/N) • Prediction-based Suppression: • 1) constant predictor • 2) affine predictor: newValue = α∗time+previousValue.

  6. SOFTWARE SANDBOX • Mitigating Privacy Risks • Regulating Access to Sensors • Sensor Access Control • Sensor Taint Tracking • Resource Metering • Energy Metering: CPU frequency estimation • Bandwidth Metering • Forced Amnesia

  7. Implementation

  8. EVALUATION: MICRO-BENCHMARK • Energy Metering • Windows Mobile • Windows API

  9. EVALUATION: APPLICATIONS • Citizen Journalist

  10. Evaluation: applications • Road Bump

  11. EVALUATION AT SCALE USING SIMULATION

  12. EVALUATION AT SCALE USING SIMULATION

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