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Signaling
ááDigital Axle Counters

Digital Axle Counter is a Micro - controller based Track Monitoring System used for signaling in Railways for Fail Safe Operation of Railway Traffic. The System Monitors Presence & absence of trains in Track Sections, Platforms, yard Area, Point Zones etc.



  • Modular Design for easy maintenance
  • Fail Safe Operation
  • Duplication of Computation paths for 2 out of 2 decision
  • Eliminates the need of wooden sleepers
  • Monitors section lengths of up to 30 Kms
  • Green / Red LED indication for track clear/ occupied status
  • Works on centrally powered 24 Vdc or 110Vac
  • Opto - isolated Relay Drive for noise immunity
  • Single Tail Clamp with fixed Stagger between transducers

Data Loggers for Track Signaling link to top
  • Simple, modular and rugged design
  • High performance 32 bit Motorola Power PC Micro controller MPC 555 used for better performance and software management.
  • Expandable from 512 digital and 32 analog inputs to 4096 digital and 256 analog inputs
  • System can work in stand - alone mode and in distributed architecture mode along with the scanner
  • CMOS/FET active components to ensure low power consumption and batter reliability.
  • Hi - rel components, relays and connectors used to ensure high MTBF
  • All input - output connections are optically and/or galvanically isolated to eliminate ground noise and earth faults
  • Built - in testability to ensure correctness of acquisition of data
  • Rugged communication protocol for transmission of error - free data
  • Dual power supply in hot standby mode increases system availability
  • User - friendly man - machine interface
  • Environment specification meets QM333 category B2
Copyrightę2008 Stesalit. All rights reserved