Hi Everybody,
I need to measure the rotation speed of a rotating shaft, but with a wireless sensor.
This is a similar application:
I'm interested in the speed of the plastic dispensers. The most basic solution would be to use an inductive sensor + a phonic wheel. BUT, since the unit is mounted on a rotating arm, I can't power the sensor (rotary joint is not an option).
I searched on google but I was not able to find anything. Do you know if there's any kind of wireless inductive sensors without battery? or at least with a battery that lasts months. The sensor would transmit about 8 hours per day, so it's not low duty cycle. The rpm of the shaft is nothing special, about 30 rpm, so the sensor does not need a high frequency input.
very important: I need an off-the-shelf product, not something DIY style.
In my mind I was thinking about a sensor which could be powered magnetically with the shaft rotation itself. So a kind of passive sensor which transmits to a receiver positioned in the static part of the machine. But since it sounds very fancy, also a battery one could be taken into consideration.
Any idea of a suitable sensor for this application?
thanks
I need to measure the rotation speed of a rotating shaft, but with a wireless sensor.
This is a similar application:
I'm interested in the speed of the plastic dispensers. The most basic solution would be to use an inductive sensor + a phonic wheel. BUT, since the unit is mounted on a rotating arm, I can't power the sensor (rotary joint is not an option).
I searched on google but I was not able to find anything. Do you know if there's any kind of wireless inductive sensors without battery? or at least with a battery that lasts months. The sensor would transmit about 8 hours per day, so it's not low duty cycle. The rpm of the shaft is nothing special, about 30 rpm, so the sensor does not need a high frequency input.
very important: I need an off-the-shelf product, not something DIY style.
In my mind I was thinking about a sensor which could be powered magnetically with the shaft rotation itself. So a kind of passive sensor which transmits to a receiver positioned in the static part of the machine. But since it sounds very fancy, also a battery one could be taken into consideration.
Any idea of a suitable sensor for this application?
thanks