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Page#    3 Blog Entries  
Rail Fanning
51919 views
12

★★
Apr 27 2023 (17:39)   12340/Coalfield Express | KQU/Kamarkundu (5 PFs) | HWH/WAP-7/37400
SAPTARSHI^~
SAPTARSHI^~   26452 blog posts
Entry# 5706687            Tags   Past Edits
1 compliments
Great
#Kavach fitted HWH WAP7 powering Coalfield Express. Observation of roof mounted equipment: 2 GPS antenna & 4 UHF antenna are visible . RTIS device also present.
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Rail Fanning
114167 views
11

Apr 02 2023 (01:57)   12301/Howrah - New Delhi Rajdhani Express (Via Gaya) | KQU/Kamarkundu (5 PFs)
SAPTARSHI^~
SAPTARSHI^~   26452 blog posts
Entry# 5682456            Tags   Past Edits
2 compliments
_/\_ Great
General observations on #Kavach/TCAS
• Kavach is the name given to the state-of-the-art train collision avoidance system (TCAS) developed by RDSO. It appears to be a complex communication system.
• Kavach costs ₹50 lakh/km & is claimed to be the cheapest TCAS
• Kavach is being installed in Rajdhani route main line, relief line & all passenger fit loop lines.
...
more...
SIL-4 certification (communication between Stationary TCAS & Loco TCAS is SIL-4 certified, other communication are not failsafe) **please read official data for exact information & clarification on SIL-4 certification

Key components of TCAS:
• On-track Radio Frequency Identification tags (RFID tags) & Track Identification numbers (TIN)
• Stationary TCAS (StTCAS) present at block stations (with a radio tower & TCAS interfaced with station interlocking) , LC gates, IBP, etc
• Loco TCAS which has RFID readers, Driver Machine Interface (DMI), radio unit, brake interface unit (BMI) & a vital computer

RFID tags are always duplicated with identical information at most cases (photo provided). RFID tags are fitted on track in station section, point zones, near Signals & track in block section for giving Trackside information to Loco TCAS unit. RFID tag has IP 67 protection with 5 Ton impact
resistance tested.

RFID tags are categorised as:
• Normal tag : is placed anywhere (photo attached)
• Signal foot tag : placed at foot of signal (photo)
• Signal approach tag : placed 150-250m before signal
• TIN discrimination tag : placed on turnouts
• LC gate tag : placed at both ends of LC (photo)
• Kavach exit tag : placed at Kavach territory exit point
• Adjacent line tag
• Adjustment/junction tag

Major features of TCAS:
• Prevention of collision between Locos (?) with functional Kavach
• Prevention of SPAD by auto braking
• Display of approaching signal with aspect (cab signalling)
• Automatically reducing speed on turnouts (at 30kmph)
• Auto-whistle at LC gates
• Prediction & maintaining TSR/PSR, etc.

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2 Public Posts - Sun Apr 02, 2023
General Travel
92956 views
15

★★
Feb 22 2022 (17:21)   22158/Chennai Egmore - Mumbai CSMT SF Mail (PT) | GTL/Guntakal Junction (7 PFs) | BZA/WAP-4/25032
VinodArvind~
VinodArvind~   3428 blog posts
Entry# 5225461            Tags   Past Edits
22158 Super Fast Mail from Chennai Egmore to Mumbai CSMT Lead By Vijaywada WAP4 as 🔥 #KAVACH 🔥 (TCAS train collision avoidance system)
Ready to Departed at Guntakal Jn.
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2 Public Posts - Tue Feb 22, 2022

1 Public Posts - Fri Mar 25, 2022
Page#    3 Blog Entries  

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  • Entry# 5648027
    Mar 01 2023 (12:44AM)


    In response to past confusions with Train/Station updates and resulting fights and controversies, the following clear and objective guidelines are being issued, with no room for any arguments or debates about validity. Also, included, some other changes with respect to Ratings. 1. All Red Ratings will require further explanation. Red Ratings won't...
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    Jun 24 2022 (08:45AM)


    As announced previously, there are a few changes coming to IRI user accounts, based on past practices. 1. As before, you will be able to quickly DELETE your IRI User account at ANY time. However, the menu option for this was hidden in the profile page, and could not easily be located....
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    Nov 29 2021 (06:40AM)


    A new feature will be released soon, whereby you can follow blogs tagged with specific Trains & Stations. If you have already posted blogs tagged with some Train/Station, then you will be set to automatically follow that Train/Station. Thereafter, any future news/blogs tagged with those Trains/Stations will be marked to your...
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    Oct 13 2021 (07:04AM)


    These days, every other day, we are getting requests from members to allow email login to their FB-based IRI account. 10 years ago, we had given the option for users to login through FaceBook - in retrospect, this was a mistake. These days, apparently, users are quitting FaceBook in droves because...
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    Mar 14 2021 (01:12AM)


    Followup to: Fmt Changes The new version of FmT 2.0 will soon be here - in about 2 weeks. As detailed in the previous announcement, many of the old FmT features like Train TT, Speedometer, Geo Location, etc. will be REMOVED. It will be a bare-bones simple app, focused on trip blogging. It...
  • Entry# 4898771
    Mar 06 2021 (10:33PM)


    There are some changes coming to FMT. Many of the features of FMT, like station arrival, TT, speed, geo, passing times, station time, etc. are ALREADY available in OTHER railway apps. So all of these features will be REMOVED. We'll have ONLY BLOGGING - quick upload of pics/videos/audio, etc. You may attach...
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