130 likes | 281 Views
City of Lynnwood. Wireless Communication in the ITS network Dick Adams, PE, PTOE. Wireless Communication Fiber Network. Wireless Communication How Wireless Fits In. Fiber network is 95% installed Needed Temporary connection Most critical equipment is IP based Need High Throughput
E N D
City of Lynnwood Wireless Communication in the ITS network Dick Adams, PE, PTOE
Wireless Communication How Wireless Fits In • Fiber network is 95% installed • Needed Temporary connection • Most critical equipment is IP based • Need High Throughput • Cost effective • Ease of installation and configuration
Wireless Communication The Design of Wireless • Researched 6 different manufacturers • Wanted Point 2 Point • Encryption Ethernet Bridge • PTZ standard is NTSC, needed to covert to IP or purchase new PTZ
Wireless Communication Making the Choice • 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
Wireless Communication Encoders - Decoders • 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
Wireless Communication Central IP Network Servers Fiber Modem To the Field Managed Switch 3 X 48 ports Web Browser AXIS Decoder NTSC Video Matrix Switch NTSC Monitors
Wireless Communication Field Locations IP Network To Central PTZ NTSC AXIS Decoder Fiber Modem Controller Ethernet Switch Ethernet Switch Video Detection Maxstream Maxstream Bridge Power over Ethernet Power over Ethernet AC/DC AC/DC
Wireless Communication Questions? Thank You Dick Adams, PE, PTOE dadams@ci.lynnwood.wa.us Paul Coffelt, PE pcoffelt@ci.lynnwood.wa.us