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Smoke detection communications options

Data communications and other challenges for smoke detection systems Dave Schroeder FERIC – Wildland Fire Operations Research Group. Smoke detection communications options. In the beginning (March 2003 – pre workshop 1):

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Smoke detection communications options

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  1. Data communications and other challenges for smoke detection systemsDave SchroederFERIC – Wildland Fire Operations Research Group

  2. Smoke detection communications options • In the beginning (March 2003 – pre workshop 1): • Communications not a big issue. Interest was in the potential for existing systems. • After the beginning (April 2003 – post workshop 1): • Data communications – lots of options. • Land line (copper or fibre optic) • Satellite • Microwave radio • 2004 operational test: • Western Canada = big areas to cover. • Cost effective data communications became an issue.

  3. 2004 data communications: Live video • Microwave ($), land line ($), or satellite ($$$$) • Detection algorithms run at remote or central office • Maximum bandwidth 2004 Configuration • Satellite communications ($$) • Detection algorithms run at central office • Significant bandwidth needed (100Kb/s) • Semi live-video Future option • Satellite communications ($) • Detection algorithms run at remote tower • Minimal bandwidth – possibility of using low cost satellite provider

  4. Satellite system: • Infosat Connect service • Shared bandwidth • Up to 256 Kbps bandwidth • No receiver dish (used Infosat hub) and high speed internet to save $$$ • High speed not fast enough for more than 3 or 4 cameras – need multiple lines • Base price in 2005 = $2,000.00/month/ tower • Great for down loading but cap on up loading – potential to double cost per month (Up loading is main requirement for camera based system). • Very stable in 2004 and 2005 operation

  5. 2005 data communications: Satellite hub (Calgary) High speed internet Obed 32 km Hinton Edson 5 km FERIC office (Hinton Training Centre)

  6. 2006 planned data communications: Edson – supernet node Hinton – supernet node Carrot Creek 45 km Obed 32 km Hinton Edson 5 km FERIC office (Hinton Training Centre)

  7. 2006 Data communications: Carrot Creek 45 km Edson 50 km Vulnerable if failure occurs at Hinton end Obed 32 km Hinton 5 km FERIC office (Hinton Training Centre)

  8. Microwave system Trango digital radios: • 5.8 GHz unlicensed band • 10 Mbps and 45 Mpbs sustained throughput • Antennas sized to fit each hop • Works through Ethernet protocol – radios act like network links. • Very stable in 2005 and 2006 operation

  9. What is the best system? A: Depends on the tower location. E.g., Satellite is only option for some towers in remote, northern sites. ? How many towers within economical range to connect microwave to land line. ? Any towers with land lines ? How much to build a tower (not all areas have suitable towers, or any towers) ? Are any of the above towers suitable for operational detection (e.g. Obed – poor visibility, versus Edson and Carrot Creek – excellent visibiltiy) ? What is the future of satellite comm’s (bandwidth vs. cost).

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