Electro-mecahnical locks used in a turnstile
Electro-mecahnical locks used in a turnstile
(OP)
I was looking to build a RFID operated turnstile similar to picture below. I will have RFID readers on both ends where the door would open from either end only if the RFID is authenticated on either end. I was wondering what are the type of locks used in these turnstiles which open the turnstiles when an RFID authenticated and then lock these turnstiles and prevent them from moving after a person enters through the turnstile after successful authentication. Are these special locks or some kind of electromagnetic locks ?





RE: Electro-mecahnical locks used in a turnstile
Mike Halloran
Pembroke Pines, FL, USA
RE: Electro-mecahnical locks used in a turnstile
RE: Electro-mecahnical locks used in a turnstile
Another method that is 'analog' instead of the rather 'digital' method just described is to use a standard electrical brake that is, again, spring applied and electrically released. The the turnstile shaft runs thru the center of the brake.
How will you deal with the RFID carrier standing next to the turn style and letting it run for 37 people?
Best would be the indexed method and only one cycle per minute or something like that.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Electro-mecahnical locks used in a turnstile
RE: Electro-mecahnical locks used in a turnstile
The logic to prevent multiple activations is pretty straightforward. Once someone goes through the gate, there's no plausible way for that person to be waiting to go through from the same side again, so that particular RFID can be disabled for at least a minute, unless an entrance reader detects the RIF re-entering a gate.
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers