skyewright
Member
I've finally got my Inspeed vortex (anemometer) and e-Vane (direction indicator) up on the mast and wires run from the mast to the computers.
I don't have the 1-wire board at the mast end yet, but as well as running FTP through the pipe for the 1-wire system I also ran some 6 core alarm/phone wire so I've temprarily used that to make a direct connection between the vortex and e-Vane and a HB Anemometer Control Board (ACB). The wire run is a bit over 50m (~160'), and avoids proximity to power cables. The ACB is part of a 1-wire system being read using OWFS plus custom software on an ALIX-1D computer. The e-Vane is working fine, but the counter seems to be over reporting. When the anemometer is still (Not common here, but we have unusally calm weather at present) the reading is steady, but when rotating the count is increasing much more that one per rotation (around 20 times too much).
If I switch the vortex reed switch's pair to a different counter board the same over counting effect is observed.
If I attach a simple "bicycle computer" to the vortex reed switch's pair the computer reports exactly what I'd expect (there is an OS WMR928 anemometer on the same mast).
This arrangement isn't what I intend for the long run, and the combination worked fine on the bench so I expect all to be okay once I get a waterproof box fitted at the foot of the mast, but an inquiring mind would like to know if there is any obvious reason for what I'm seeing? Should it be okay to attach a counter board to a switch so far away?
David
Edit: I just tried attaching a LabJack U3 counter to the vortex reed switch's pair and that similarly over counted (I could see the anemometer rotating at just under than 1Hz, but the counter was increasing far faster than that).
I don't have the 1-wire board at the mast end yet, but as well as running FTP through the pipe for the 1-wire system I also ran some 6 core alarm/phone wire so I've temprarily used that to make a direct connection between the vortex and e-Vane and a HB Anemometer Control Board (ACB). The wire run is a bit over 50m (~160'), and avoids proximity to power cables. The ACB is part of a 1-wire system being read using OWFS plus custom software on an ALIX-1D computer. The e-Vane is working fine, but the counter seems to be over reporting. When the anemometer is still (Not common here, but we have unusally calm weather at present) the reading is steady, but when rotating the count is increasing much more that one per rotation (around 20 times too much).
If I switch the vortex reed switch's pair to a different counter board the same over counting effect is observed.
If I attach a simple "bicycle computer" to the vortex reed switch's pair the computer reports exactly what I'd expect (there is an OS WMR928 anemometer on the same mast).
This arrangement isn't what I intend for the long run, and the combination worked fine on the bench so I expect all to be okay once I get a waterproof box fitted at the foot of the mast, but an inquiring mind would like to know if there is any obvious reason for what I'm seeing? Should it be okay to attach a counter board to a switch so far away?
David
Edit: I just tried attaching a LabJack U3 counter to the vortex reed switch's pair and that similarly over counted (I could see the anemometer rotating at just under than 1Hz, but the counter was increasing far faster than that).