Warning/safety lights

[Mike-Greg]

Hi (Its me again )

 

I have a fiddle yard on a lower level

althou I have made access to it for maintanence / derailments

It is difficult to see it during operation

 

it is 3 roads, but they are quite short

I neeed to beable to see that when there is something in one it is clear of anything

entering or exiting the other 2

 

see diag:

 

 

What I was thinking about is using 6 bi-coulor LED,s

1 each end of each road

the first on entry to show when the unit is far enough in to clear the other 2 roads

the 2nd to show the the exit ends are clear

green = clear red = danger

 

I have heard about some form of optic detector that would fitt between the sleepers and detect if there

was something over it or not

so if not the led would be green if covered it would show red

 

thing is i hve just spent 3 hours using the serch here to find something to no avail ( maby using the wrong serch word ??°

 

thing is would this work,, and if so what do i need to buy and how would i wire it up

 

thanks in advance

Mike

[corax67]

Hi Mike,

 

there is a host of general information about train detection on this site:

 

http://homepages.paradise.net.nz/~rdmurg/clinic/detectit.htm

 

 

and a ready made solution here (proximity detectors):

 

http://www.azatrax.com/ir-model-train-detector.html

 

 

and:

 

http://www.heathcote-electronics.co.uk/IRDetec.htm

 

 

 

plus an absolute shed load of circuits on here:

 

http://home.cogeco.ca/~rpaisley4/CircuitIndex.html

 

if you can wield a soldering iron.

[Mike-Greg]

Hi Karl

 

Thanks for the links

I think the heatcote ones are just what i need

 

rgds

Mike

[corax67]

Excellent - glad to be of help