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Home > Business > IT Solutions > Traffic System |
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1) Overview and conceptual diagram
Facility to monitor the situations of the railway platform regarding the ins and outs of the train by providing the visual signal of the destination platform to the monitor inside the approaching train by means of wireless transmission to secure the safe operation of the train |
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2) Properties
* It satisfies tunnel environment and high-speed mobility.
Using OFDM and DS(Direct Sequence modulation), and space/frequency/time diversity technologies, it overcomes the multi path fading and non-LOS(Line Of Sight) environment.
In OFDM, for the same transmission capacity, a high number of sun-carriers has an advantage due to the low ISI(Inter Symbol Interference) in the mobile environment. OFDM and spatial diversity reception technique minimize the short multi path effect due to train’s movement and tunnel wall, so, it provides the best solution to subway’s mobile environment.
* Dualization of power supply equipment
The subway system, which runs on high-voltage electricity, is always exposed to various problems such as the poor power supply environment and short-circuits of the power lines of electrical equipment.
Through monitoring of AC and DC power sources, it has the following functions as an automatic exchange to redundancy system; automatic insulation and noise reduction; over voltage and over current protection; sensory function against a short-circuit. |
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