LC Gate Warning System
LC Gate Warning System
for Manned Interlocked Gate
The system gives audio visual warning to the gate man about an approaching train. This warning ensures that the gate is not closed too early inconveniencing the road users or too late detaining the train by not closing the Gate when a train approaches gate signal. This warning is prescribed for interlocked gates.
Approaching Train can be detected using occupancy of a nominated track circuit. To provide optimum time for gate man to close the gate, a track circuit, which is already available at about 3 km, is selected. However, if there is no track circuit at 3 km, nearest existing track circuit is considered. This is to avoid maintenance of a track circuit exclusively for the purpose of approach warning. In practical situations, the track circuit immediately after the last stop signal of the station is used as approach track for all the LC gates in the block section. Sometimes if the distance between the first LC gate and the track circuit is too less, approach warning is given as soon as the last stop signal is cleared. In both the cases, it is a digital signal (track occupied and signal yellow or green lamp lit) whose state of change generates approach warning.
Advantages:
- The system gives audio visual warning to the gate man about an approaching train. This warning ensures that the gate is not closed too early inconveniencing the road users or too late detaining the train by not closing the Gate when a train approaches gate signal. This warning is prescribed for interlocked gates..
- The system provides visual warning to Station Master about the status of LC gate.
- Gate Man discipline compliance and characteristic can be analyzed with logged data.
- Necessary reports can be generated to improve the safety and performance.
Specifications:
- The system shall monitor and log all the field parameters like signal and gate controlling relays, Analog Voltages
- LC gate information is transmitted to central place and depicted in the NMDL
- The system shall be capable of working in an ambient temperature range of -10 to 70
- The system shall be networked using leased line modems
- The system shall have health monitoring, to monitor power supply and communication to indicate system failure.
- The system shall run in case of Power Failure
Technical Specification for LC gate Equipment:
- Digital Inputs - 32 ( Optically isolated)
- Analog Inputs - 8
- Voice Modem Ports - 2
- Data Retrieval through PC
- User interface is provided with buttons and Seven Segments
- Audio and Visual Indication with acknowledgement
- Power Supply : 24 V DC
- Temperatures: -10 to 70 degree centigrade
Technical Specification (for station unit):
- Data Logger Interface to transfer Data to central place
- Modem Communication ports (2wire or 4 Wire): 2
- Power Supply : 24 V DC
- Temperatures: -10 to 70 degree centigrade