Taipei, Taiwan, September 26th, 2011
Korenix High Power 802.3at ruggedized PoE switches have been embedded in a train-to-ground automation project in Europe for providing real time video surveillance and control of the subway system. Using the 802.3at high power PoE compliant M12 ports the switches provided reliable video surveillance resisting vibration and shock on moving platforms, while ensuring the uninterrupted communication of high speed video through the formed MSR rings of its gigabit ports. Additionally, JetWave 2450 wireless N access points completed the project requirements providing high performance and real-time wireless transmission and, therefore, guaranteeing the high quality remote surveillance of the carriages.
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To provide increased passenger security as well as to tackle competition from other means of transportation, subway operators are now installing video cameras and introducing multimedia services, such as real-time passenger information, on-board multimedia and Internet access as a differentiator. For enabling the efficient train-to-ground operation, modern subway network constructors are using enhanced communication technologies. However, some challenges need to be addressed such as the resistance to harsh environments, data transmission reliability and cost-effectiveness.
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A subway operator in Europe has chosen to use Korenix industrial networking solutions in its subway carriage monitoring project. The project aimed at developing an innovative and bandwidth efficient communication system to transmit large data rate communications from carriages to the control center. The installation consisted of over 700 JetNet 6710G-M12 PoE networking switches plus 100 JetWave 2450 wireless Access Points.
In each carriage of the train a single JetNet 6710G-M12 switch is installed to power up the cameras using the 30W power of its 48V PoE ports and simultaneously collect the captured images. To control power budget, the switches provide automatic budget and priority control function enhancing system maintenance and protecting cameras from shut down.
The information is then collected and sent through M12-rated Ethernet ports to be stored in the existing embedded computer, which in its turn also stores multimedia information. The JetNet 6710G-M12 switches are chosen to be used in the trains for their ruggedized fanless design and the M12 connectors, which provide a reliable solid connection, resisting to vibration, shock and dust on the moving wagons.
After collecting data from each carriage, the switches connect together via the RJ45 Gigabit ports, allowing users to transmit large megapixel video images from the carriages to the ground. By enabling the MSR protocol of the switches, users can form a ring within the switches, aiming to ensure the network reliability and non stop transmission without data loss or blocking.
To send the data from the train to the remote station, the JetWave 2450 is further installed in each train. Using the built-in Ethernet interface, the JetWave 2450 Wireless Access point collects the video images from the JetNet 6710G-M12 and through 802.11n Wireless N band connects and communicates the video data to another JetWave 2450 installed in the train station. Station administrators can greatly benefit from the 802.11n technology of the Korenix’s Wireless Access point to transfer up to 100M video and other data directly from the train during a short train stop at the station. The software changeable antenna design allows them to easily choose to use the omni antenna through the N type socket for extending video and multimedia data up to 5km by overlaying multiple radio signals.
Using Korenix’s ruggedized wired and wireless solutions, the train operator has designed a simple system to transfer live video images and other info captured from the carriages to the control center in a real-time basis and with no system loss or failure.
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More details on the application can be found here!
About Korenix: Korenix Technology, a Beijer Electronics Group Company, is devoted to designing and manufacturing high quality Industrial Networking & Computing Products to ensure high quality and reliability of industrial networks. Korenix solutions encompass the Industrial IEEE 802.3af PoE and IEEE 802.3at High power PoE Switches, Industrial L2 / L3 Rackmount / Rail Ethernet Switches and IP67/ 68 Waterproof Ethernet Switches, Long Distance Wireless Outdoor APs and Embedded Networking Routing Platforms, etc.
Korenix Technology
A Beijer Electronics Group Company
www.korenix.com; www.korenixsurveillance.com
+886-2-8911-1000
sales@korenix.com
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