Employing Internet of Things Technologies for Building Automation
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This document discusses employing Internet of Things technologies for building automation. It proposes using the Constrained Application Protocol (CoAP) as the main communication protocol between applications and smart devices. A gateway is used to bridge wireless sensor networks and the Internet. New devices can be automatically discovered and configured using CoAP. The system was implemented and tested with various sensor and networking hardware over a 4 month period. Future work includes adding more CoAP extensions and implementing DNS-like capabilities for gateways.
Employing Internet of Things Technologies for Building Automation
- 1. Employing Internet of Things Technologies for Building Automation Employing Internet of Things Technologies for Building Automation Challenges Design ETFA 2012 – SS04-1 Aspects CoAP Auto Config Gateway Amaxilatis Dimitrios, Georgitzikis Vasileios, Impl. Details Giannakopoulos Dimitrios, Chatzigiannakis Ioannis Evaluation Conclusions Computer Technology Institute and Publications, “Diophantus” Patras Greece September 20, 2012
- 2. Employing Internet of Things Technologies for Building 1 Challenges Automation 2 Design Aspects Challenges CoAP Design Aspects Auto Config CoAP Auto Config Gateway Gateway Impl. Details 3 Impl. Details Evaluation Conclusions 4 Evaluation 5 Conclusions
- 3. Main Challenge Employing Internet of Things Technologies for Building Automation How can we easily create Building Automation applications using the IoT concepts, and take advantage of end-to-end Challenges communication between applications and smart devices. Design Aspects CoAP Auto Config Gateway Impl. Details Evaluation Conclusions
- 4. Main Challenge Employing Internet of Things Technologies for Building Automation How can we easily create Building Automation applications using the IoT concepts, and take advantage of end-to-end Challenges communication between applications and smart devices. Design Aspects CoAP Auto Config Gateway Open Standards Impl. Details Easy to use Interface Evaluation Conclusions Simple Installation and Auto-Configuration Scalability and Expandability Support for heterogeneity
- 5. Targets of out system Employing Internet of Things Technologies for Building Automation Challenges Design Bridge smart devices and the Internet with Gateways. Aspects CoAP Single communication protocol for applications and smart Auto Config Gateway devices (CoAP). Impl. Details Simple method to add new smart objects. Evaluation Conclusions
- 6. Design Aspects Employing Internet of Things Technologies for Building Automation Challenges Design Aspects CoAP Auto Config Gateway Impl. Details Evaluation Conclusions
- 7. Open Standards - CoAP Employing Internet of Things Technologies for Building Automation The Constrained Application Protocol is a cut-down version of Challenges HTTP for use with constrained nodes and networks. Design Aspects CoAP Offers a well established communication model with GET, Auto Config Gateway POST, PUT and DELETE requests. Impl. Details Evaluation Over IPv6 CoAP servers can be accessed directly via web using Conclusions a single request (e.g., coap://address/temperature).
- 8. Why CoAP Employing Internet of Things Technologies for Building Automation Standardized Services Challenges “On Change” Notifications Design Fragmentation Aspects CoAP Auto-Discovery Auto Config Gateway Hides out Heterogeneities Impl. Details Facilitates M2M communication Evaluation Conclusions Can be enriched with other IoT technologies Semantics, RDF and SPARQL
- 9. Auto Discovery of new Devices Employing Internet of Things Technologies for Building Automation Challenges New devices should require minimal effort to be included to the Design Aspects actual system. CoAP Auto Config Gateway CoAP offers the discovery of services by sending out a single Impl. Details request. Evaluation Conclusions
- 10. Auto Configuration of new Devices Employing Internet of Things Technologies for Building Automation Challenges It is important to design a Design Aspects single software for all devices CoAP regardless of their actual Auto Config Gateway sensing capabilities. Impl. Details Evaluation Sensors and Actuators need to Conclusions be identifiable.
- 11. Gateway Employing Internet of Things Technologies for Building Automation Java Application running on a Linux box that: Challenges Bridges 802.15.4 WSNs and the Internet. Design Aspects Uses an XBee module to communicate with sensors and CoAP Auto Config offers a CoAP endpoint for Internet clients (for IPv4 Gateway networks). Impl. Details Evaluation Includes the sensors available in its own description. Conclusions
- 12. Gateway Employing Internet of Things Technologies for Building Automation Java Application running on a Linux box that: Challenges Bridges 802.15.4 WSNs and the Internet. Design Aspects Uses an XBee module to communicate with sensors and CoAP Auto Config offers a CoAP endpoint for Internet clients (for IPv4 Gateway networks). Impl. Details Evaluation Includes the sensors available in its own description. Conclusions Even the Gateway is a CoAP server!
- 13. Heterogeneous Network Employing Internet of Things Technologies for Building Selection Criteria: Automation 1 Programming API Challenges 2 Expandability Design Aspects 3 Robustness CoAP Auto Config 4 Supported devices Gateway Impl. Details 5 Hardware Restrictions Evaluation 6 Cost Conclusions
- 14. Heterogeneous Network Employing Internet of Things Technologies for Building Selection Criteria: Automation 1 Programming API Challenges 2 Expandability Design Aspects 3 Robustness CoAP Auto Config 4 Supported devices Gateway Impl. Details 5 Hardware Restrictions Evaluation 6 Cost Conclusions Selected Xbee, Arduino and iSense devices.
- 15. CoAP Implementation Employing Internet of Things Technologies Based on the draft version 8 of CoAP for Building Automation Observe and Block-wise Transfers Extensions CoRE Link Format Extension for Resource Discovery Challenges Design Arduino Aspects CoAP Tested on different Arduino boards like Uno, Pro Mini and Fio. Auto Config Gateway Impl. Details iSense Evaluation Tested on iSense Core 1 and 2. Conclusions Each device in the final setup is equipped with up to 11 sensor and actuator capabilities while currently Internet to WSN communications is done via the Gateway.
- 16. Auto Configuration Employing Internet of Things Technologies for Building Automation iSense Offers calls to the OS that detect connected sensor modules. Challenges Design Arduino Aspects CoAP Using a Voltage Divider Circuit we can detect the type and Auto Config Gateway number of sensor connected to the Arduino. Impl. Details Evaluation XBee Conclusions No logic can be implemented, so information is forwarded and auto configuration is performed on other devices.
- 17. Evaluation Employing Internet of Things Technologies for Building Automation Experimental Setup: Challenges Design 65 iSense and 15 Crossbow TelosB Aspects CoAP 20 Arduino and 5 XBee Auto Config Gateway 45 Sun SPOT Impl. Details Evaluation The system is running for the past 4 months in the CTI Conclusions Building with the above setup.
- 18. Experiences and Future Targets Employing Internet of Things Technologies for Building Automation Experiences Gained: Trade-off between Cost and Design Freedom. Challenges Non IPv6 networks limit the system’s performance. Design Aspects CoAP offers a level of abstraction from actual WSN CoAP Auto Config hardware. Gateway Impl. Details Evaluation Conclusions
- 19. Experiences and Future Targets Employing Internet of Things Technologies for Building Automation Experiences Gained: Trade-off between Cost and Design Freedom. Challenges Non IPv6 networks limit the system’s performance. Design Aspects CoAP offers a level of abstraction from actual WSN CoAP Auto Config hardware. Gateway Impl. Details Evaluation Future Targets: Conclusions Include more extensions to CoAP (e.g, proxy, security). Implement DNS-like capabilities for Gateways. Implementation for other platforms.
- 20. Employing Internet of Things Technologies for Building Automation Semantic Web interaction with Real Objects http://spitfire-project.eu/ Challenges Design Aspects CoAP Thank you! Auto Config Gateway Impl. Details Q&A Evaluation Conclusions Computer Technology Institute and Press “Diophantus” http://www.cti.gr/en/