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AssigneeCashcode Company Inc.
InventorsLeon Saltsov, Volodymyr Barchuk, Sergiy Androsyuk, Dmitro Baydin, Vitaliy Grzhibovskyy, Yevgeniy Yavorskyy, Gennadiy Gaponyuk
Estimating the term…
A planar induction sensor for sensing of security features of documents having changing magnetic and (or) conducting properties is of a multilayer printed circuit board design. The sensor comprises a planar current transformer with a spiral-type primary coils and one or several turns of secondary coil in an adjacent layer of the printed circuit board. The secondary coil of the current transformer is connected to an operating coil, which is situated at a sensing edge of the sensor. The operating coil can be formed by external wires or can be incorporated in the circuit board of the current transformer. When a security element, made from the magnetic or conductive material moves past the sensing edge of the sensor, a change in inductance of the induction sensor occurs. In a preferred embodiment, two induction sensors with individual associated electronic circuits were located on opposite sides of validator channel. Analysis of both signals from the sensors allows correction of the signal to reduce variation caused by changing distance of the security document from each sensor.
A banknote validator comprising a banknote evaluation channel, a transport arrangement for moving a banknote through said evaluation channel, at least one induction sensor placed in one side of said evaluation channel for sensing changes of the magnetic and inductive properties of a banknote as it is moved past said at least one induction sensor;
A banknote validator comprising a banknote evaluation channel, a transport arrangement for moving a banknote through said evaluation channel, at least one induction sensor placed in one side of said evaluation channel for sensing changes of the magnetic and inductive properties of a banknote as it is moved past said at least one induction sensor wherein said induction sensor comprises a multilayered printed circuit having a current transformer and an operating coil, said current transformer comprising a planar spiral-type primary coil provided on one layer of said printed circuit with an associated secondary coil in an adjacent layer of the printed circuit board, said primary coil cooperating with said secondary coil to induce a responsive intensive current in said secondary coil, said secondary coil being connected to the operating coil, said operating coil forming a testing magnetic field responsive to changes in magnetic and conductive properties of a banknote when moved past said operating coil.
In a banknote validator, a planar induction sensor for sensing magnetic and conductive security structures as processed by the banknote validator, said planar induction sensor comprising planar current transformers manufactured by multilayer printed circuit board technology and operating coils, said current transformers comprising planar spiral-type primary coils associated with a planar secondary coils in the nearest layers of the printed circuit board, said primary coils induce a responsive intensive current in said secondary coils, said secondary coils being connected to the operating coils, said operating coils forming a testing magnetic field on the magnetic and conductive security structures.
Dependencies are inferred from the claim text.