This document outlines a proposed online platform for collecting, visualizing, and sharing real-time sensor data. The system would allow users to define policies to trigger actions based on sensor readings. Example use cases described include a smart mail box that sends notifications when mail arrives, monitoring temperature in a refrigerator, and tracking variables in wine fermentation. The proposed architecture uses XMPP and SOX standards to integrate diverse sensors and enable data sharing. Future work could enhance integration with social networks and make the rules and actions more flexible.

1. An Online Platform for Real-Time Sensor Data Collection, Visualization, and Sharing University of Madeira – Master Thesis Salvador Faria 2010 1

2. Outline Motivation Proposed Solution System Architecture Use Cases Tests Future Work 2

3. Introduction Methods for retrieving sensor data Continous Event-oriented Query-oriented Hybrid Existing solutions DIY Proprietary Limited policies or none 3

4. Motivation Uniform solution for managing sensors Alow users to define Policies Integrate with common services Sharing devices with others 4

5. Proposed Solution Proposed system Support for any type of sensors Record sensor data Data visualization Sensor and data sharing Actuation based on policies 5

6. System Architecture 6

7. Sensor Middleware XMPP Realtime XMPP protocol Asynchronous comunication Data transport with Security / Authentication Built to be Extensible PubSub extension Decentralized 7

8. Sensors Over XML SOX Transducer schema Allows devices to talk the same language Support for sensing and actuation 8

9. Platform Web application Network & Sensor management Data visualization & exporting Share devices Policies Platform administration Services Actionchecker Datarecorder Scheduler Tools sox_tools 9

10. Use Cases Mail Box Refrigerator Wine Monitoring 10

12. Device uploads sensor data

13. User receives an SMS notification

14. System check for polices

15. If policy matches, the system executes the actionFast Flexible (disable, enable, modify) Use different notifications 11

16. Refrigerator Objectives Monitoring and statistical analysis 12

17. Refrigerator Average data Raw data 13

18. Refrigerator Interesting statistics 14

19. Wine Monitoring Objectives Use sensors to study various parameters of the vinification processof Madeira wine Use actuators to control the environment Processes Selecting sensors Building probe Results & Lessons 15

20. Wine Monitoring Selecting sensors Easy interfacing - the sensor should be easy to interconnect with microcontrollers, and not require external circuits. No maintenance - the sensor should operate for long time without maintenance. Affordable- the price of sensor should be relatively affordable, considering the possibility of extending to multiple wine tanks. 16

21. Wine Monitoring Building Probe Attempt 1 Attempt 2 Attempt 3 Attempt 4 Improvement 17

22. Wine Monitoring Results Collected sensor data Interest from wine and beer community Lessons More and better sensors Better and custom materials Design probe from scratch 18

23. Tests Publish Sensor Data Policies 19

24. Future Work Integration with social networks More flexible rules More action plugins Fix security issues 20