What about the railway GPS for model railroads (I think there¡¯s a beta test of that now) using a sonic transmitter in the locomotive and several receivers around the room. You can calculate the position in 3-space from the transmission time to each receiver.
?
And add in JMRI OpsPro ¡ª if JMRI is building the trains you know the cars in each train and the length of each car. From that you should be able to deduce the position of each coupler. ?That should cover all the information you need. What I don¡¯t think has been done yet is to connect them all together to operate (as in run an OpsPro operating session automatically), running one on more trains completely under computer control.
?
Scott Walton?
