The System "knows" is there is any train in the section and if another train gets too close to the section. Then the train control system can force stop the second train if the section is already occupied. Also, automatic railway crossing use axle counters too. How the system knows that the train is already passed the road crossing and the blocks can be opened? - Axle counters
This is honestly the best video on Axle Counters I have ever watched! Clear and concise explanations and you included extra details such as science behind electromagnets which really added to my understanding. Thank you so much! Subscribed!
i knew axle counters existed to check no coupling had broken. This took my knowledge further for sure. for me in britain the history of this goes back to adding flashing red light on the back. this way the signaller can see the back of the train is still attached. no flashing red light. no clearing that section as vacant again. for ROC you defo need axle counters. no signallers to visually look at the back of trains.
Great Explanations, I like the video the way you explained about traditional axle counter functions and magnetic field, you could intrude yourself in the beginning of your presentation, great work.
Very good👍 information though we have seen them while travelling but we don't know or ignored to explore, now you revealed explicitly with good animation, thank you so much❤😊🙏
Did you ever post part2 of this fascinating subject? Many thanks for this one - really good! I came away with some questions: For example, if there is a power or system failure that affects a set of counters, how are all the trains kept safe and how is such a failure detected anyway? Given there are no lineside signals to fall back on, I am assuming that all trains receive some kind of "systems failure in block y. If you're in block x,y or z bring your train to a stop immediately" type of a directive? I woudl guess it's possible to make the countar values persist by use of flash memory or battery backups in the lineside cabinets but re-sycnching things must be a chore!
Thanks Alan. Great question, which i'll definitely look into. But based on what I know so far, the counter can fail in two way - It leaves a count eventhough the train has cleared the block, OR it clears the counts while train is still inside. In short, one is false occupancy and one is false vacancy. False occupancy is a safeside failure, and False vacancy is an unsafe failure. By definition, Axle counters are SIL4 i.e. probability of an unsafe failure is something like once per million years. There is a whole lot about failure rates of individual components, resulting in failure rate of Axle counter as a whole, which i might get into. Another thing is that interlocking checks, sequential occupancy/vacancy of the blocks. So if suddenly an occupancy is lost and everything goes vacant, I assume the interlocking will stop all trains. I just dont know, if the area affected will be local of global. But thank you for the though provoking question.
@@gauravkaushik04 Hmm yes, as you touched on in your video in the overall system axle counters talk to higher levels of the overall system so maybe there is some kind of heartbeat message from the counters to the higher level which, if missed, make the executive system failsafe the section concerned. Also if an exec function is supervising a number of axle counters it perhaps makes sure that when the outcount of one section is decremented, the incount of the next section is incremented within a couple of seconds - and (since axles should not just vanish from the railway!) if it is not then again a fault is declared. Has to be something like that - but oh my that could get complex with certain track formations.
Using same concept ,for engine/battery supply ,safe within/between wheels, eliminating overheads,.....will reduce much of caternary metals around... What's ur views???
Nice informative video, but a sincere request is to leave the accent aside as it makes understanding a few of your pronounciations of some words extremely difficult.
Had not fully understood the reason for the need for axle counters to register block occupancy. Many thanks for this video!
The System "knows" is there is any train in the section and if another train gets too close to the section. Then the train control system can force stop the second train if the section is already occupied.
Also, automatic railway crossing use axle counters too. How the system knows that the train is already passed the road crossing and the blocks can be opened? - Axle counters
This is honestly the best video on Axle Counters I have ever watched! Clear and concise explanations and you included extra details such as science behind electromagnets which really added to my understanding. Thank you so much! Subscribed!
Glad you enjoyed it!
Part 2??
Thanks for providing a helpful video
Kindly upload part 2
Keep it up baba ....good work
Great video, when are you planning to release the advanced video?
Very informative.
i knew axle counters existed to check no coupling had broken. This took my knowledge further for sure. for me in britain the history of this goes back to adding flashing red light on the back. this way the signaller can see the back of the train is still attached. no flashing red light. no clearing that section as vacant again. for ROC you defo need axle counters. no signallers to visually look at the back of trains.
amazing, thnks for the complete explanation
Excellent explanation.
Great Explanations, I like the video the way you explained about traditional axle counter functions and magnetic field, you could intrude yourself in the beginning of your presentation, great work.
Well explained
Very good👍 information though we have seen them while travelling but we don't know or ignored to explore, now you revealed explicitly with good animation, thank you so much❤😊🙏
Beautifully explained.. Keep it up for other topics too..
I will try my best
Thanks❤❤❤❤
Very good explained! Thank you very much!
Glad you liked
Is it possible to get the slides you made for this video?
Excelente video !!👏👏para cuando la 2a parte ?!muchas gracias!!
Working on it
Hey Will you explain gradient, tpws, and oss?
Hi Gaurav when are we getting part 2?
Did you ever post part2 of this fascinating subject? Many thanks for this one - really good!
I came away with some questions: For example, if there is a power or system failure that affects a set of counters, how are all the trains kept safe and how is such a failure detected anyway? Given there are no lineside signals to fall back on, I am assuming that all trains receive some kind of "systems failure in block y. If you're in block x,y or z bring your train to a stop immediately" type of a directive? I woudl guess it's possible to make the countar values persist by use of flash memory or battery backups in the lineside cabinets but re-sycnching things must be a chore!
Thanks Alan. Great question, which i'll definitely look into. But based on what I know so far, the counter can fail in two way - It leaves a count eventhough the train has cleared the block, OR it clears the counts while train is still inside. In short, one is false occupancy and one is false vacancy. False occupancy is a safeside failure, and False vacancy is an unsafe failure. By definition, Axle counters are SIL4 i.e. probability of an unsafe failure is something like once per million years. There is a whole lot about failure rates of individual components, resulting in failure rate of Axle counter as a whole, which i might get into.
Another thing is that interlocking checks, sequential occupancy/vacancy of the blocks. So if suddenly an occupancy is lost and everything goes vacant, I assume the interlocking will stop all trains. I just dont know, if the area affected will be local of global.
But thank you for the though provoking question.
@@gauravkaushik04 Hmm yes, as you touched on in your video in the overall system axle counters talk to higher levels of the overall system so maybe there is some kind of heartbeat message from the counters to the higher level which, if missed, make the executive system failsafe the section concerned. Also if an exec function is supervising a number of axle counters it perhaps makes sure that when the outcount of one section is decremented, the incount of the next section is incremented within a couple of seconds - and (since axles should not just vanish from the railway!) if it is not then again a fault is declared. Has to be something like that - but oh my that could get complex with certain track formations.
Using same concept ,for engine/battery supply ,safe within/between wheels, eliminating overheads,.....will reduce much of caternary metals around...
What's ur views???
Saludo!
next video?
There are no “electronics” inside a cautor type 69 electro mechanical treadle as shown in the first 2 minutes of this video only make/ break contacts.
Sir hindi me video bnaiyega
Theek Hai, future mein yehi socha Hai ki video English and hindi dono mein banaunga. Thank you for feedback.
Nice informative video, but a sincere request is to leave the accent aside as it makes understanding a few of your pronounciations of some words extremely difficult.
I will try my best
@@RailAcademy really appreciate you taking the feedback in a positive manner. Keep the videos coming BTW.
As a none native English speaker, I understood well your explanations.