E-Flow: A communication system for user
notification in dynamic evacuation scenarios
Augusto Morales
Technical University ...
The Evacuation Problem
• The evacuation analysis is a long-studied
problem.
• There are Route modeling systems, decision
s...
Building and evacuation plan including
the user perspective
• Nowadays, there many solutions that
indeed permit WSN enviro...
How to improve the chances
of survival from the user
perpective?
To offer better information awareness!
Users

Safety staff

Emergency Response
Teams

Communication System for Dynamic
evacuation scenarios

Communication
Infrae...
Our solution is the Eflow
system
The BIG Picture of the E-Flow system
Proxy
MQTT
MQTT-to-Web Brokers

Faculty and
Students

XMPP
Servers

subscribe()
publi...
User Awareness

Messaging Capabilities
E-Flow Implementation
Integration of Sensor/Actuators
Design from scratch
- low-power OMAPL127 (DSP+ARM) of TI
- 802.15.4
- PSOC3 of Cypress Sem...
Web-based application

Mobile Application (Android)

- Nodejs. Websockets-MQTT
- Openfire. XMPP
- Mosquitto MQTT broker
- ...
E-Flow Deployment
First Deployment at the Telecommunication School (UPM)
Second Deployment at Hospital de San José (Carabanchel,
Madrid)
Second Deployment at Hospital de San Pastor (Carabanchel,
Madrid)
results
Does the E-flow system provides acceptable
user awareness levels?
End-to-End
MQTT-to-Web using Websockets

Pub/Sub Network...
summary
Proxy
MQTT
MQTT-to-Web Brokers

Faculty and
Students

XMPP
Servers

subscribe()
publish()

Local Network
Infraestructure

...
future work
Integrate decision
support system

stronger
experimentation

Better WSN
Integration
E-Flow: A communication system for user
notification in dynamic evacuation scenarios
Augusto Morales
Technical University ...
Upcoming SlideShare
Loading in …5
×

UCAMI 2013

288 views

Published on

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

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
288
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
3
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

UCAMI 2013

  1. 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. 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. 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. 4. How to improve the chances of survival from the user perpective?
  5. 5. To offer better information awareness!
  6. 6. Users Safety staff Emergency Response Teams Communication System for Dynamic evacuation scenarios Communication Infraestructure H2M Communication Capabilities M2M Sensors/Actuators/ Signalling
  7. 7. Our solution is the Eflow system
  8. 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. 9. User Awareness Messaging Capabilities
  10. 10. E-Flow Implementation
  11. 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. 12. Web-based application Mobile Application (Android) - Nodejs. Websockets-MQTT - Openfire. XMPP - Mosquitto MQTT broker - Android (asmack, Alljoyn)
  13. 13. E-Flow Deployment
  14. 14. First Deployment at the Telecommunication School (UPM)
  15. 15. Second Deployment at Hospital de San José (Carabanchel, Madrid)
  16. 16. Second Deployment at Hospital de San Pastor (Carabanchel, Madrid)
  17. 17. results
  18. 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. 19. summary
  20. 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. 21. future work
  22. 22. Integrate decision support system stronger experimentation Better WSN Integration
  23. 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

×