Business On-board Signalling System
atc Device
Automatic Train Control On-board Signaling is the device that displays continuously allowable speed of the vehicle and automatically stops or decelerates a train if it exceeds the permissible speed, by receiving the operating conditions on the wayside. On-board Signaling System consists of ATC Rack, MMI, ATC Antenna and Tachometer.
Major Products
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Aspect Display Unit(ADU)
The driving information such as current speed and the speed limit of the vehicle is displayed and notifies the driver of the audible warning according to the situation depending on the information transmitted from on-board ATC Rack installed in the driver’s compartment.- 10.4” TFT LCD, Touch Screen
- Automatic screen brightness control, Self Test function
- S/W upgrade using USB and download log information function
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ATC Rack
It consists of a redundancy system of 1 system (main operating system) and 2 system (auxiliary operating system) to control ATC funtion and interfaces to each other between vehicles and components. -
ATC Antenna
It is istalled at the front part of the front axle of the forward of EMU and receives speed code information from the ground signal systemt via the rail. -
Tachometer
It generates pulses according to the rotation of the wheels, and the On-board Signaling System calculates the speed of the train using the pulse signals of the tachometer.
Major Function
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01
Speed Control of ATC Operation
It provides speed control by the ATC operating mode. It performs the ATC function of wayside sequence speed code survey mode.
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02
Computation of Train Speed
It computes the speed with the signal from the Tachometer and the value of wheel diameter.
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03
Redundancy System design
It is possible to operate without any change since it is automatically switched to the standby system in case of operating system failure in operation.
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04
User
Interface
Aspect Display Unit displays the operation information such as the speed limit on a 10.4" Touch TFT-LCD and notifies the driver of the audible warning according to the situation. Emergency operation, 15km/h operation, and a pre-departure test can be operated.
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05
Speed Limitation Recognization
It recognizes the speed limit information by receiving the signals in the closed loop installed in the railway with a pair of ATC antennas installed under the train (TC car).
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06
Pre departure
Test
It provides test function for safe operation of the train through operating the ATC system in a virtual sequence of operations before the vehicle leaves the base and checking abnormality of signal and braking device in advance.
Application
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Domestic- Seoul Metro Line- 4 EMU
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Overseas- Egypt Cairo Line 1