Traffic Light Control
Beijing is China’s second largest city, after Shanghai.
It is a major transportation center, with dozens of railways, roads and motorways passing through the city. The city will host the 2008 Summer Olympics, to improve the heavy traffic during rush hour; public
transportation and intelligent traffic system are often introduced in nearly all metropolitans. For intelligent traffic system, it requires Ethernet redundant mechanism, RS-232/422 to Ethernet converter to
remote control traffic light and other traffic sign/display.
Fiber converters becomes a must since the remote control traffic
light maybe located tens of kilometers apart. In the diagram below, each
circle
represents 4 sets of traffic light from 4 intersections, and the
traffic information is collected and transmitted back to the traffic
control center instantly through the JetCon2301’s Fiber connection.
JetPort/JetCon Series is the best combination for the traffic control
application operating under harsh environment. Connecting the JetPort
5601 to the traffic light controller and link to the JetNet 4508f
through Ethernet then report those signals to the control center. By
using this network architecture demonstrated in the picture, it provides
Ethernet Ring redundant solution assuring a non-stop data transmitting
to the traffic control system. Fiber module in single mode of the JetNet
4508f extends the network connectivity.
Main Products
Why Korenix
Reliable
JetNet 4508f provides Super Ring
technology-back up system recovery time is less than 20ms, Dual Homing and Couple Ring.
Easy Maintenance
JetCon 2301 features remote Link Loss Forwarding (LLF)
technology which provides remote link down signal forwarding and
acknowledging link events.
3-in-1 Serial Configuration
JetPort 5601 serial port supports RS-232/422, 2/4 wire RS485
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2010 Rugsėjo 28 d.
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2010 Rugsėjo 28 d.
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