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