03-01-2017, 11:39 PM
(03-01-2017, 10:10 PM)Canard Wrote: 1/2 - Sunday, February 26, 2017
If they can make these signs illuminate when a train is approaching, why can't they figure out how to do the same with the ION logos on the Anchor Walls?
These signs operate in more of a binary fashion for trains. Either on or off. When it comes down to the dimmable/pulsing sign it's more complex. There are multiple ways to programmably dim an LED each one has it's own disadvantages. The most appropriate method (Digital Addressable Lighting Interface) is quite expensive and requires some pretty sophisticated programming to achieve what we would be looking for. There's also an accuracy question. The No Turn TRAIN signs activate when the train is within a set distance from the controlled area (and usually through some sort of track ciruit, induction loop sensor or other sensor method). How accurate would we want the dimmable/pulsing sign? Would we want the sign to pulse faster the closer the train is? Or would the sign simply get brighter the closer the train is? How accurately can we track the train? What happens if there are gaps in train location data? These are all