UCAMI 2013
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The paper that was presented in the UCAMI 2013 conference, Costa Rica

The paper that was presented in the UCAMI 2013 conference, Costa Rica

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UCAMI 2013 Presentation Transcript

  • 1. E-Flow: A communication system for user notification in dynamic evacuation scenarios Augusto Morales Technical University of Madrid UCAmI 2013 Picture by David Gordillo Costa Rica · December 2-6
  • 2. The Evacuation Problem • The evacuation analysis is a long-studied problem. • There are Route modeling systems, decision support systems, middlewares, WSN and so on. • There are several gaps of current evacuation plans regarding the way users perceive the information and are aware of the situation 2
  • 3. Building and evacuation plan including the user perspective • Nowadays, there many solutions that indeed permit WSN environments to provide information in evacuation situations. • Nevertheless, there are other challenges , more related to the human factor, such as: – reducing the reaction time of personnel, – reducing the interpretation time, – providing easy interaction mechanisms and – Providing dynamic signaling. 3
  • 4. How to improve the chances of survival from the user perpective?
  • 5. To offer better information awareness!
  • 6. Users Safety staff Emergency Response Teams Communication System for Dynamic evacuation scenarios Communication Infraestructure H2M Communication Capabilities M2M Sensors/Actuators/ Signalling
  • 7. Our solution is the Eflow system
  • 8. The BIG Picture of the E-Flow system Proxy MQTT MQTT-to-Web Brokers Faculty and Students XMPP Servers subscribe() publish() Local Network Infraestructure subscribe() publish() Wi-fi Remote Networks Mobile Safety Staff WSN Wi-fi Mobile Broker Pub/Sub Client Emergency Response Teams MQTT Client Concentrators 802.15 Sensors
  • 9. User Awareness Messaging Capabilities
  • 10. E-Flow Implementation
  • 11. Integration of Sensor/Actuators Design from scratch - low-power OMAPL127 (DSP+ARM) of TI - 802.15.4 - PSOC3 of Cypress Semiconductor - USB battery re-chargable - Connected with Linux (Montavista) - Sensors: presence, humidity, Temperature, luminance Actuator Evacuation signal Concentrator MQTT Client Temperature Usb Sensors Node 4 Humidity Node 2 Node 1 (Central Node) Evacuation signal Actuator Temperature Node 3 Node 5 Sensors Humidity Wireless Sensor Network (WSN)
  • 12. Web-based application Mobile Application (Android) - Nodejs. Websockets-MQTT - Openfire. XMPP - Mosquitto MQTT broker - Android (asmack, Alljoyn)
  • 13. E-Flow Deployment
  • 14. First Deployment at the Telecommunication School (UPM)
  • 15. Second Deployment at Hospital de San José (Carabanchel, Madrid)
  • 16. Second Deployment at Hospital de San Pastor (Carabanchel, Madrid)
  • 17. results
  • 18. Does the E-flow system provides acceptable user awareness levels? End-to-End MQTT-to-Web using Websockets Pub/Sub Network MQTT only Mean Median SD Mean Median SD a) Fixed devices 30,977 29,770 1,056 4,740 4,515 0,904 b) Mobile devices c) Proxy Delay 246,983 250,989 11,893 65,904 66,938 4,111 4.402 4.520 0.830 - - - We have checked the normality of the three samples with the Shapiro-Wilk normality test [23] and conclude that the three samples came from a Normal distribution (p-value <= 0.05). User experience and awareness are still acceptable for mobile cases. This affirmation is based on the work of Jacob et al., which states that delays less than 1.0 seconds need no special feedback.
  • 19. summary
  • 20. Proxy MQTT MQTT-to-Web Brokers Faculty and Students XMPP Servers subscribe() publish() Local Network Infraestructure subscribe() publish() Wi-fi Remote Networks Mobile Safety Staff MQTT Client WSN Wi-fi Mobile Broker Concentrators 802.15 Sensors Pub/Sub Client Emergency Response Teams E-flow system provides user awareness
  • 21. future work
  • 22. Integrate decision support system stronger experimentation Better WSN Integration
  • 23. E-Flow: A communication system for user notification in dynamic evacuation scenarios Augusto Morales Technical University of Madrid UCAmI 2013 Picture by David Gordillo Costa Rica · December 2-6