Safety-Critical Embedded Solutions for Railways

System Description

  • Micro controller based Smart Controller system to monitor and control the AC sub system in the Indian Railways AC coaches
  • Designed and developed as per the RDSO specification
  • Approved by RDSO and installed in Indian Railways AC coaches
  • System consists of a Control Unit and a 7-inch TFT display Unit
  • Control unit monitors and controls the AC sub system by sensing the temperature and humidity
  • Faults and Events are stored in the non-volatile memory
  • All system parameters and faults are displayed in 7-inch TFT display. User buttons available for modifying the system configuration
  • Faults and Events are send through GPRS to server for Remote Monitoring
  • Modbus interface for external interface

Railways Capabilities

  • Expertise in CBTC Systems
  • Safe and Reliable Hardware/Software solutions
  • Interlocking and In-vehicle solutions
  • Technology Retro for legacy systems
  • Technology Solutions for Test and Maintenance

Intelligent Input/Output Cards

  • Intelligent input/output cards to process real time high voltage signals
  • Optical isolation for high voltage signals
  • Each card to interface 5 high voltage signals and transport it as RS485 packets
  • EMC/EMI Tested, Elevated Temperature Tested at +55 Degree Centigrade
  • Input/Output CardsTest Setup (Actual cards mounted in Racks)
  • 50+ cards daisy chained
  • 250+ signals multiplexed
  • Multiplexed signals carried over RS485 to gateway

Intelligent Data Logger System

  • System designed for preventive maintenance of trackside devices
  • Monitors the trackside device Axle Counter health
  • Data Logger hardware connected to each trackside device
  • Data Loggers networked via RS485 or Ethernet to form a private network
  • Axle Counter health data is periodically collected by each Data logger
  • 7 days of health data locally stored
  • USB interface to collect the data locally
  • Gateway collects Data Logger data periodically and uploads it to the Cloud

Wireless Train Control Simulator

  • Emulate Train Control Signals
  • Targeted for maintenance purpose in the absence of trains
  • Handheld Battery Operated
  • Binary FSK communication system
  • HDLC Protocol on top of the physical RF channels
  • Antenna for low frequency RF Transmission
  • Atmega328P-AU, SPI, UART, HDLC, EEPROM , RF Transmitter and RF Demodulator ICs

Conversion to IP Network

  • System to replace legacy network to IP network
  • Proprietary Railways Protocol to IP Protocol
  • Geographically distributed nodes built on Intel processors
  • Data and Error Logging Mechanism for Nodes
  • Remote monitoring and configuration of nodes

AC Coach Controller

  • Double Decker AC Coach Controller
  • 110V digital inputs – 22 numbers, Relay outputs - 20
  • Controls 4 Compressors, 4 Condensers, 4 Blowers and 2 heaters
  • 6 Temperature sensors for Source Air, Return Air and Fresh Air
  • Humidity and Pressure Sensors
  • Modbus Interface
  • Faults and Events logged in internal EEPROM
  • GPS/GPRS interface for remote monitoring
  • 7 inch TFT display