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King Fahd University of Petroleum and Minerals EE- 400 Communication Networks Wireless Industrial Networks (Wireless HAR

King Fahd University of Petroleum and Minerals EE- 400 Communication Networks Wireless Industrial Networks (Wireless HART) Prepared For Dr. Samir Ghadhban Done By Khalil Al-Saedi ID # 233263 Ali Al-Ojaimi ID # 233535. OUTLINES. INTRODUCTION

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King Fahd University of Petroleum and Minerals EE- 400 Communication Networks Wireless Industrial Networks (Wireless HAR

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  1. King Fahd University of Petroleum and Minerals EE- 400 Communication Networks Wireless Industrial Networks (Wireless HART) Prepared For Dr. Samir Ghadhban Done By Khalil Al-Saedi ID # 233263 Ali Al-Ojaimi ID # 233535

  2. OUTLINES • INTRODUCTION • NETWORK ARCHITICTURE • LAYERS SPECIFICATIONS • Physical Layer • Data-Link Layer • Network Layer • Transport Layer • Application Layer • CONCLUSION

  3. INTRODUCTION • Wireless HART is a Wireless Mesh Network Communications Protocol. • designed to meet the needs for process automation applications.

  4. INTRODUCTION • Wireless HART is a key part of the HART Field Communications Protocol Revision 7 • Existing HART applications (e.g., control systems, PLC's, maintenance tools, and asset management applications)

  5. NETWORK ARCHITICTURE • Wireless HART Field Devices (WFD): • connected to the process or to plant equipment

  6. NETWORK ARCHITICTURE • Wireless HART Gateways: • enable communication between Host Applications and WFD • support one or more Access Points • A Gateway and its Access Points must included in every Wireless HART network

  7. NETWORK ARCHITICTURE • A Wireless HART Network Manager: • responsible for configuration of the network • scheduling communication between Wireless HART devices (e.g., configuring super frames) • management of the routing tables • monitoring and reporting the health of the Wireless HART Network

  8. NETWORK ARCHITICTURE

  9. LAYERS SPECIFICATIONS • Physical Layer: • Maximum data rate (250 kbps). • Operating Frequency (2.4 - 2.48 GHz). • O-QPSK modulation and Direct Sequence Spread Spectrum (DSSS). • transmit Power is 10dBm.

  10. LAYERS SPECIFICATIONS • Data-Link Layer: • Wireless HART DLPDU (Data Link Protocol Data Unit) specifies a byte which identifies Wireless HART packet types. • TDMA using timeslots organized into super frames as 100 timeslots per second depending on the bandwidth. • Link between devices specified by super frames, timeslots and channel offset.

  11. LAYERS SPECIFICATIONS • Network Layer: • Devices support routing and broudcast. • Request bandwidth. • Configure the shared slots and blocking transmission.

  12. LAYERS SPECIFICATIONS • Transport Layer: • provides end-end acknowledgement of communications. • Acknowledged transmissions include automatic retransmission to confirm successful data transfer. • Supports TCP-like reliable blocking for transmission of large data sets.

  13. LAYERS SPECIFICATIONS • Application Layer: • Device status for quality process. • Commands aggregation for multiple command.

  14. CONCLUSION • Wireless HART provides new capabilities and more secure process. • The HART technology becomes the leader of the wireless industrial networks.

  15. REFERENCES 1) http://www.pepperl-fuchs.com/selector/navi/productInfo/doct/tdoct1535__eng.pdf;jsessionid=C3FB6B5B6DCA2903B8DAB2FA5610A903 2) http://wireless.industrial-networking.com/articles/articledisplay.asp?id=14 3) http://www.globalspec.com/FeaturedProducts/Detail/Wireless_HART_Gateway/33442/0 4) http://www.cds.caltech.edu/~shiling/wirelesshart_datasheet.pdf 5) http://portal.etsi.org/Docbox/Workshop/2008/200812_WIRELESSFACTORY/HARTFOUNDATION_Griessmann.pdf

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