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C ITY OF L YNNWOOD Wireless Communication in the ITS network Dick Adams, PE, PTOE
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W IRELESS C OMMUNICATION F IBER N ETWORK
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W IRELESS C OMMUNICATION H OW W IRELESS F ITS I N Fiber network is 95% installed Needed Temporary connection Most critical equipment is IP based Need High Throughput Cost effective Ease of installation and configuration
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W IRELESS C OMMUNICATION T HE D ESIGN OF W IRELESS Researched 6 different manufacturers Wanted Point 2 Point Encryption Ethernet Bridge PTZ standard is NTSC, needed to covert to IP or purchase new PTZ
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W IRELESS C OMMUNICATION M AKING THE C HOICE Maxstream Xpress Ethernet Bridge Throughput : 15 Mbps Interference possible on the 900 Mhz $390 per pair of modems Needed in house Design for Antennas Yagi antennas - 40 miles Line of Sight Low Loss cable with 50 Ohm impedance Paul Coffelt, PE - ITS Engineer
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W IRELESS C OMMUNICATION M AXSTREAM
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W IRELESS C OMMUNICATION F IELD D EVICES
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W IRELESS C OMMUNICATION E NCODERS - D ECODERS Convert NTSC to MPEG Or Motion JPEG IP addressable Web based IP programming Single or 4 video signal versions Ethernet with Serial port for control Up to 30 fps possible With Wireless we use 3 fps per channel
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W IRELESS C OMMUNICATION A XIS S CREEN C APTURE
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W IRELESS C OMMUNICATION L OCATION OF B RIDGE 2600 ft
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W IRELESS C OMMUNICATION C ENTRAL IP N ETWORK Fiber Modem Servers Web Browser Managed Switch 3 X 48 ports AXIS Decoder Video Matrix Switch To the Field Monitors NTSC
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W IRELESS C OMMUNICATION F IELD L OCATIONS IP N ETWORK Fiber Modem Ethernet Switch AC/DC Maxstream Ethernet Switch AC/DC Maxstream AXIS Decoder PTZ Bridge To Central NTSC Controller Video Detection Power over Ethernet Power over Ethernet
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W IRELESS C OMMUNICATION Q UESTIONS ? Thank You Dick Adams, PE, PTOE dadams@ci.lynnwood.wa.us Paul Coffelt, PE pcoffelt@ci.lynnwood.wa.us
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