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| London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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#1
October 11th 16, 01:43 PM
posted to uk.transport.london
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Battersea extension
On Tue, 11 Oct 2016 14:13:00 +0100
Roland Perry wrote: In message , at 13:02:39 on Tue, 11 Oct 2016, d remarked: I don't think there will be PEDs. But why would the trains need extra kit if PEDs are fitted? I just assumed there needs to be some kit in the train to tell the door mechanism that its arrived and fully stopped. I can't see how you'd get the 2nd part of that accurate enough just by using some sort of passive sensor. If the teething troubles they had with the JLE were correctly reported, most of the PED-synching is down to the driver's skills, rather than technology. Its ATO. However there still needs to be something to tell the platform doors to open when the train doors open and I assume its some bit of NFC kit on the train. -- Spud |
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#2
October 11th 16, 01:56 PM
posted to uk.transport.london
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Battersea extension
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#3
October 11th 16, 02:13 PM
posted to uk.transport.london
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Battersea extension
Roland Perry wrote:
In message , at 13:43:15 on Tue, 11 Oct 2016, d remarked: If the teething troubles they had with the JLE were correctly reported, most of the PED-synching is down to the driver's skills, rather than technology. Its ATO. What is, JLE or the Battersea extension? Both now, but not the Jubilee when the JLE with its PEDs first opened. However there still needs to be something to tell the platform doors to open when the train doors open and I assume its some bit of NFC kit on the train. If ATO doesn't know where the train is, just as well as that sort of NFC device, I'm astonished. I think it's the signalling that operates the doors, and of course it knows exactly where the train is. But I'm not sure how it knows to close the PEDs. |
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#4
October 11th 16, 02:55 PM
posted to uk.transport.london
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Battersea extension
On Tue, 11 Oct 2016 14:13:49 -0000 (UTC)
Recliner wrote: Roland Perry wrote: In message , at 13:43:15 on Tue, 11 Oct 2016, d remarked: If the teething troubles they had with the JLE were correctly reported, most of the PED-synching is down to the driver's skills, rather than technology. Its ATO. What is, JLE or the Battersea extension? Both now, but not the Jubilee when the JLE with its PEDs first opened. However there still needs to be something to tell the platform doors to open when the train doors open and I assume its some bit of NFC kit on the train. If ATO doesn't know where the train is, just as well as that sort of NFC device, I'm astonished. I think it's the signalling that operates the doors, and of course it knows exactly where the train is. But I'm not sure how it knows to close the PEDs. Or open them given that its still down to the driver to press the open button AFAIK. I doubt a signal is sent all the way to the main signalling control system then all the way back to the doors to tell them to open because if the train is being driven in emergency manual mode because of an ATO failure then those platform doors won't be opening anytime soon. -- Spud |
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#5
October 11th 16, 03:33 PM
posted to uk.transport.london
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Battersea extension
wrote:
On Tue, 11 Oct 2016 14:13:49 -0000 (UTC) Recliner wrote: Roland Perry wrote: In message , at 13:43:15 on Tue, 11 Oct 2016, d remarked: If the teething troubles they had with the JLE were correctly reported, most of the PED-synching is down to the driver's skills, rather than technology. Its ATO. What is, JLE or the Battersea extension? Both now, but not the Jubilee when the JLE with its PEDs first opened. However there still needs to be something to tell the platform doors to open when the train doors open and I assume its some bit of NFC kit on the train. If ATO doesn't know where the train is, just as well as that sort of NFC device, I'm astonished. I think it's the signalling that operates the doors, and of course it knows exactly where the train is. But I'm not sure how it knows to close the PEDs. Or open them given that its still down to the driver to press the open button AFAIK. I doubt a signal is sent all the way to the main signalling control system then all the way back to the doors to tell them to open because if the train is being driven in emergency manual mode because of an ATO failure then those platform doors won't be opening anytime soon. Presumably the signalling system knows the train has stopped in the right place to open the doors. Perhaps the on-board ATO also tells the signalling system if the doors are open/closed, while the signalling controls whether the doors can open? There's presumably a manual override for emergencies. |
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#6
October 11th 16, 02:09 PM
posted to uk.transport.london
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Battersea extension
wrote:
On Tue, 11 Oct 2016 14:13:00 +0100 Roland Perry wrote: In message , at 13:02:39 on Tue, 11 Oct 2016, d remarked: I don't think there will be PEDs. But why would the trains need extra kit if PEDs are fitted? I just assumed there needs to be some kit in the train to tell the door mechanism that its arrived and fully stopped. I can't see how you'd get the 2nd part of that accurate enough just by using some sort of passive sensor. If the teething troubles they had with the JLE were correctly reported, most of the PED-synching is down to the driver's skills, rather than technology. Its ATO. However there still needs to be something to tell the platform doors to open when the train doors open and I assume its some bit of NFC kit on the train. The Jubilee is ATO now, but wasn't when the JLE opened. I think the PEDs are operated by the signalling system. |
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