Simulation-preventing turnstile
AssigneeItaldis S.p.A.
InventorMario Libardi
Life of this patent
Estimating the term…
Abstract
A turnstile provided with an electronic control unit having a photoelectric cell (8, 9) connected therewith, located downstream from the turnstile revolving member (3), in the user walking-through direction, in order to check if the user has actually walked through. Therefore, the turnstile has the ability to detect and issue a signal for, a simulated walking-through attempt performed by a user who actuates turnstile revolving member (3) without actually walking-through said turnstile, and it proves particularly effective for checking the arrival and the presence of personnel at the working posts.
Claims3
A simulation-preventing turnstile having an upstream and a downstream side and comprising:
- a housing;
- a revolving member extending from the housing between the upstream and downstream sides;
- a first optical sensor located at the upstream side of the housing;
- a second optical sensor located at the downstream side of the housing;
- a third optical sensor located above the revolving member;
- and
- a fourth optical sensor located below the revolving member, each of the first through fourth optical sensors providing a triggering signal to an electronic control unit, the optical sensors being triggered in a predetermined manner when a person correctly passes through the turnstile from the upstream side to the downstream side, the electronic control unit activating an alarm when a deviation from the predetermined manner is detected.
Dependencies are inferred from the claim text.