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prabhakar_deosthali
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Pilot engines
prabhakar_deosthali   8/20/2014 1:44:25 AM
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In India , a practice is followed , whereby for the high speed passenger trains, a pilot engine runs ahead of the train to ensure that there is no track fault or any other obstruction ( natural landslides or man made obstructions ) on the track for the following train.

If such pilots ( autonomus - like those drones) are run ahead of every train a majority of possibile accedents can be avoided.

dt_hayden
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Re: can this scanning be done on line?
dt_hayden   8/19/2014 9:50:04 AM
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The stopping distances are so long, given the speeds and momemntum of the trains, that the scan would have to be made way in advance of the advancing train.    However, scanning the track as it passes, to ensure safety for the next train certainly seems worthwhile.   http://www.minnesotasafetycouncil.org/facts/factsheet.cfm?qs=858251BECECF1976F908D7D68B570E85

A couple years ago I saw a panel van transiting a local highway with cameras pointed every which way.  Curious about what was being done, I caught up to the van and it was some sort of camera based highway maintenance scanner, that would look for potholes and other issues.  No idea if it was a service some agency had contracted, or just an outfit out trying to generate business.

dt_hayden
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simialr to the Lidar services
dt_hayden   8/19/2014 9:44:00 AM
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This is simialr to the Lidar services that companies like mine use, to document the physical environment and ensure adequate transmission line clearances to vegetation, terrain, and buildings.  From what I understand it is very expensive per mile of line, and the datasets are enormous.  The level of detail is quite good, although I don't have any resolusiton or accuracy specs.

This is a company that offers such services, found through a web search.  No endorsement of any kind is implied.  http://www.grwinc.com/geospatial-LiDAR.html

sw guy
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Re: can this scanning be done on line?
sw guy   8/19/2014 7:42:26 AM
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Not necessarily mounted on all trains, but on a number of ones.

Once you can be sure each day each section is inspected by at least one train, you can get rid of specialized engines (gain on engine cost, scheduling, ...)

OleAlexander
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Re: can this scanning be done on line?
OleAlexander   8/19/2014 6:29:21 AM
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Also, if every train had this device, there would be frequent samples and therefore the ability to detect trends - a certain parameter that deteriorates over time could be detected before it was actually outside of boundaries.

 

ChristophZ
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Re: can this scanning be done on line?
ChristophZ   8/19/2014 4:57:55 AM
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Good idea, but it will only help the next train that follows. Check the distance a fully loaded train needs to break (With 50 km/h for example).

But yes, this small size system will help to avoid accidents because more vehicels are used to measure the tracks more often.

prabhakar_deosthali
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can this scanning be done on line?
prabhakar_deosthali   8/19/2014 3:59:16 AM
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I was just wondering if such scanning system be fitted on all railway engines and enables the drivers to forsee any fault in the track system before the train passes over the track.

Such system will need suitable modifications to have a lase system beaming ahead in an inclined angle to be able to see the track ahead of the train and generate alert if it finds some problem with the rails, the sleepers or the track base.

Such system will be very useful in avoiding accidents due to  sudden track  failures

prabhakar_deosthali
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Re: LED Testers ATTN : EDITOR
prabhakar_deosthali   8/19/2014 3:54:12 AM
The comment with the caption LED Testers is an AD and not a comment related to the topic of this blog.

 

Editor - Pl remove this comment.

 

Moderator

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