Gestalt
Newbie level 5
I need to setup a switching device that gets its input from a high speed 3000 - 5000rpm rotating disc. Rotor disc is about 1.5 feet in diameter. Readings are to be made on the outer perimeter.
My fear is mechanical commutator style switch is to slow, and not robust enough, there may be issues with vibration on the rotor.
The rotor has large permanent magnets on it for a generator, so hall effect sensing is out of the question, for there would be major magnetic interference.
So the next thing I thought was opotocoupling...having a light beam directed at the rotor and putting some reflective strips on the rotor disc to trigger switching. Ideally I would want the signal to travel optically for a foot, out of the high magnetic area where the generator action is taking place for fear of interference.
I have been looking at optocouplers online, but having some difficulty making heads or tails out of whats available given what I want to do. Is what I want perhaps, more like a laser detector or optical scanning?
My fear is mechanical commutator style switch is to slow, and not robust enough, there may be issues with vibration on the rotor.
The rotor has large permanent magnets on it for a generator, so hall effect sensing is out of the question, for there would be major magnetic interference.
So the next thing I thought was opotocoupling...having a light beam directed at the rotor and putting some reflective strips on the rotor disc to trigger switching. Ideally I would want the signal to travel optically for a foot, out of the high magnetic area where the generator action is taking place for fear of interference.
I have been looking at optocouplers online, but having some difficulty making heads or tails out of whats available given what I want to do. Is what I want perhaps, more like a laser detector or optical scanning?