gca186-en
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
gca186-en [2018/12/24 16:35] – [Why hallsensors?] phg | gca186-en [2018/12/24 22:18] (current) – [The prototype board] smitt48 | ||
---|---|---|---|
Line 46: | Line 46: | ||
The flashing lights are only shut off after the barriers are completely up again.\\ | The flashing lights are only shut off after the barriers are completely up again.\\ | ||
If you swap A with D and B with C in this text, you have the explanation for the opposite way.\\ | If you swap A with D and B with C in this text, you have the explanation for the opposite way.\\ | ||
- | For a one way traffic, different firmware will be available, also for double track, different frimware is available | + | For a one way traffic, different firmware will be available, also for double track.\\ |
This board cannot service more than doubletrack, | This board cannot service more than doubletrack, | ||
That would need many more sensors , which there is no input for.\\ | That would need many more sensors , which there is no input for.\\ | ||
Line 53: | Line 53: | ||
===== Why hallsensors? | ===== Why hallsensors? | ||
It is obvious that sensing the length of a train can only be done if sensors count correctly.\\ | It is obvious that sensing the length of a train can only be done if sensors count correctly.\\ | ||
- | Current detection is also possible, but in this case very inaccurate, and also the last waggon should consume any current from the rails\\ | + | Current detection is almost impossible and very inaccurate, and also the last waggon should consume any current from the rails\\ |
Reed switches are not suitable because one action could generate multiple pulses.\\ | Reed switches are not suitable because one action could generate multiple pulses.\\ | ||
In fact, current detection (or ground loop detection with Märklin) shows the same problem.\\ | In fact, current detection (or ground loop detection with Märklin) shows the same problem.\\ | ||
- | IR gates also will n ot work, unless you will be 200% sure that only one pulse is generated for each loc/ | + | IR gates also will not work, unless you will be 200% sure that only one pulse is generated for each loc/ |
Hall-sensors are ideal for it.\\ | Hall-sensors are ideal for it.\\ | ||
The large hysteris guarantees one pulse from each passing magnet.\\ | The large hysteris guarantees one pulse from each passing magnet.\\ | ||
Line 65: | Line 65: | ||
===== The prototype board ===== | ===== The prototype board ===== | ||
- | The usual item, to proove | + | The usual item, to prove that it works.\\ |
| {{: | | {{: | ||
\\ | \\ |
gca186-en.txt · Last modified: 2018/12/24 22:18 by smitt48