Railway Signal Business
High-voltage impulse track circuit device
The impulse track circuit device detects the presence or absence of train points in the 25,000 [v], consisting of voltage stabilizer, transmitter, receiver, track relay, and impedance bond (transmission / reception). This device can be used not only for AC trains but also for non-trains.
Expected effect : Possible to establish a safe signal system by detecting the presence or absence of hot spot in the train section and achieve the safe operation of the train
Signal Power Supply
In order to supply stable power to the signal equipment, the power supply circuit for each signal device is configured to supply the main power and the spare power while removing the unnecessary abnormal voltage and to protect the equipment, supply more stable power than the track circuit device, the signal device and the automatic block control device (Introduction – Photo)
Expected effect : Provide stable power supply for each signal device to establish safer signal system and achieve safe operation of train
Non-Isolated Audible Frequency (AF) Track Circuit Device
It is a non-insulated track circuit device designed for AC or DC train sections where there is a high level of electromagnetic interference (mainly generated from the high frequency of the electric line power supply). It can detect the presence of trains through the equipment and can be used in both the station area and the block area. And is a track circuit device that does not carry a speed code.
Expected effect : The train detection function and the distance from the front trains, the indicated speed of the train, and the vehicle operation information are transmitted to the locomotive and directly connected to the braking device to automatically control the entering train ignoring the signal.
Automatic Block System (ABS)
The train running between stations should be operated at a constant interval so that no collision would happen. For this purpose, a block section exists so that only one train can be operated in a closed section.
Accordingly, a block system is currently installed and operated between the station and the station to control the train operation. Therefore, this is a block section of the railway with signal security device, so that more trains can operated (Automatic Block System) in which a plurality of block alarms are installed.
Expected effect : It is linked with the block signal, track circuit device and ATS device, and automatically controls the signal display according to the progress of the train, so as to connect with the interlocking device in the station and to maximize the safe operation and transportation efficiency of trains
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