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| Type | Commercial Circular |
|---|---|
| Topic | reservation |
| Currency | Currency not verified |
systems of Loco Kavach unit • TCAS shall be able to display Signal Aspect in Loco pilot’s
Introduction to Kavach System Version 3.2/4.0 (Onboard and Stationary kavach) CLI-05 1. ONBOARD KAVACH ONBOARD KAVACH BLOCK DIAGRAM ONBOARD KAVACH 4 Onboard Equipment:- • Vital Computer • Full duplex Radio modems -2nos. • Pulse generators – 2nos • RFID Readers – 2nos • Driver Machine Interface (DMI) - 2nos. • UHF antennae – 4nos • GPS and GSM antenna – 2nos • Brake Interface Unit (BIU) Loco TCAS Schematic ONBOARD KAVACH – EQUIPMENT & LOCATIONS RFID Reader-1 RFID Reader-2 Pulse Generator-1 Pulse Generator - 2 BIU-1 DMI-1 Onboard Kavach Isolation box DMI-2 BIU-2 GNSS for time synchronization, GSM Radio Antennae-1 Radio Antennae- 2 GNSS for time synchronization, GSM ONBOARD KAVACH - VITAL COMPUTER The onboard Kavach vital computer shall have provisions for following:- • To interface with train interface unit and brake interface unit • Two direction sensing type speed sensor interface for direction determination, distance and speed measurement • To interface with RFID reader to read RFID tags fitted on track 6 Loco TCAS Unit ONBOARD KAVACH - VITAL COMPUTER ..contd The onboard Kavach vital computer shall have provisions for following:- • To interface with DMI consisting of display arrangement & buttons/switches for operation • Two commercial GSM/LTE interfaces for connectivity with centralized Network Monitoring System (NMS) and Key Management System (KMS) • USB interface for downloading of log and other data for diagnostic purpose (Clause 3.6.2 of SRS) 7 Loco TCAS Unit The power supply module converts the 72V/110V DC supply to the supplies required by the sub-systems of Loco Kavach unit. POWER SUPPLY ARRANGEMENT RFID TAG/RFID READER • RFID Reader • Shall be able to read the tag from a vertical distance of 700mm • Vertical fixing from top of rail level is 450+/-50mm • Permissible offset +/-100mm in horizontal plane • IP 65 protection • RFID Tag • Suitable upto 250 kmph • Frequency of operation 865-867 MHz • 128 bits(minimum) of information • IP 68 protection 9 RFID Tag RF ANTENNAS • RF Antennas • Suitable upto 250 kmph • Frequency of operation 425-430 Mhz • IP 67 protection and flame proof • MTBF (Mean time between failures) • Onboard Kavach : 40,000hrs • RFID Reader, Radio Modem, GPS/GSM modem: 1,00,000hrs 10 NAME OF THE EQUIPMENT ANTENNAS LOCATION ABOVE DRIVING CABs NUMBER OF UNITS 04–BLACK (02-RX, 02-TX) + 01-RED (GPS/GSM) ABOVE CAB-2 ABOVE CAB-1 • Electronic Module: • It consists of a Control Card having built-in air brake control logic. • Control Card interfaces with Analog Input Module, Digital Input Module & Digital Output Module to monitor and control air brake application/ release. • Pneumatic Panel: • It consists of different valves, pressure transducers and manual cocks - Interfaced with IRAB system & Electronic Module for brake control purpose. BRAKE INTERFACE UNIT (BIU) -IRAB Block diagram of Loco brake Interface 3-Phase Loco, E-70 BIU(IRU) ARRANGEMENT 13 NAME OF THE EQUIPMENT RFID READER UNIT LOCATION UNDER FRAME BEHIND CATTLE GUARD NUMBER OF UNITS 02 PER LOCO PG JUNCTION BOX PG & AXLE BOX RFID READER PULSE GENERATOR (PG) PULSE GENERATOR • Directional type PGs • Based on Wheel Diameter : Speed/Distance monitoring is performed 15 LOCO-PILOT OPERATING CUM INDICATION PANEL (LP-OCIP)/DMI LOCO-PILOT OPERATING CUM INDICATION PANEL (LP- OCIP)/DMI • LEDs • SYSTEM: Green/Red • EMERGENCY/SOS : Green/Red • Pushbuttons • Common/Ack(black) • Cancel (Blue) • SOS (Red) • Knob • Leading/Non Leading 17 HARDWARE CHANGES FROM VERSION 3.2 TO VERSION 4.0 Medha On-board: The requirement for pressure transducer was mentioned in the specification of BIU but not in Kavach Specification. The BIU spec. was applicable only for IRAB. Now in Version 4, the requirement of BC, BP & MR pressure transducers has been mandated in Kavach Specification itself. Kernex On-board: All 06 Main Intelligent Equipment (MIE) cards are upgraded with new Micro Controller (Processor) from LPC 2378 to STM 32 F series.. V
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