C
colin
- Jan 1, 1970
- 0
Hi,
I have a device that is rotating fairly slowly (1-5rps) and I need to supply
power (atm 12v at 1amp, possibly needing 24v at 4 amps peak) and read a
couple of vlf signals,
At the moment I have tried to make some slip rings using (4) concentric
circular tracks on a pcb and some springy contact strip, I didnt expect it
to last forever but the experiment only has to run for a few minutes once an
hour for a few days.
However it now seems I now need to run the thing continuously for several
days, the slip rings make an awefull noise and the contacts wear out too
fast (theyr rather stiff) although the pcb seems to hold up fairly well wich
is the opposite of what I expected. contact lube/grease makes a big
difference but not for very long.
Im just wondering if anyone has sucesfully made any slip rings, Im going to
ramake them but this time I think I will have to make them axialy instead of
radialy, (the shaft is 15mm diameter on the end of an induction motor), Ive
taken apart some relays, I might try and use the contacts from them, and
make the rings out of the contact strip.
Im also considering other options like tramsiting the data via wireless,
just one ring for the power would be a lot easier,
Is there an easy setup to go from usb to pc via wireless? or a (cheap) data
logger that conects to a pc wirelessly ?
I also could do with monitoring a few more signals, I already have a USB
data logger wich has many inputs, would the USB signals actualy cope with
going through slip rings ?
Colin =^.^=
I have a device that is rotating fairly slowly (1-5rps) and I need to supply
power (atm 12v at 1amp, possibly needing 24v at 4 amps peak) and read a
couple of vlf signals,
At the moment I have tried to make some slip rings using (4) concentric
circular tracks on a pcb and some springy contact strip, I didnt expect it
to last forever but the experiment only has to run for a few minutes once an
hour for a few days.
However it now seems I now need to run the thing continuously for several
days, the slip rings make an awefull noise and the contacts wear out too
fast (theyr rather stiff) although the pcb seems to hold up fairly well wich
is the opposite of what I expected. contact lube/grease makes a big
difference but not for very long.
Im just wondering if anyone has sucesfully made any slip rings, Im going to
ramake them but this time I think I will have to make them axialy instead of
radialy, (the shaft is 15mm diameter on the end of an induction motor), Ive
taken apart some relays, I might try and use the contacts from them, and
make the rings out of the contact strip.
Im also considering other options like tramsiting the data via wireless,
just one ring for the power would be a lot easier,
Is there an easy setup to go from usb to pc via wireless? or a (cheap) data
logger that conects to a pc wirelessly ?
I also could do with monitoring a few more signals, I already have a USB
data logger wich has many inputs, would the USB signals actualy cope with
going through slip rings ?
Colin =^.^=