TH19767B - Devices for verifying the authenticity of silver, silver and other metal coins. - Google Patents

Abstract

A device for verifying the authenticity of a (M) silver coin or Other metal coins consisting of a coin acceptor (1) with a lower side wall (4) and a higher side wall (5), with the coin acceptor (M) moving along the coin receiving rail (1). ) On the lower side wall (4) in such a way that it touches Through the first and second (2, 3) pilot emitters, either of which are coils (2, 3) or A coil and a sheet metal (2, 6; 3, 7), with the first (2) coil fixed to the side wall. The lower side (4) and the second (3) coil are attached to the higher side wall (5), where the two (2, 3) windings are able to operate independently of the electrical circuit. Better yet, coils (2, 3) are electrically arranged in series resonance circuits (RLC) during coin passage (M). The induced impedance variation in Each coil (2, 3) is examined, determined and analyzed, and where the alloy composition and the d thickness of the M coin are determined from there.

Claims (9)

1. A device for verifying the authenticity of a coin (M), a silver or other metal coin, with a coin acceptor (1) with a lower wall (4) and a higher side wall (5) by The coin acceptor rail (1) is tilted at a predetermined angle to the vertical axis (V) and the coin (M), in the imaginary case it moves along the lower wall (4) in such a way that There are two inductive sensors arranged along the coin acceptor rail (1), an electronic circuit (14) and a control and processing unit (15), where the This will be a coil (9) attached to the lower side wall (4), where the second inductor is a coil (10) attached to the side wall. Higher (5) where paths (13, 14) were made for coils for the use of the two coils (9, 10) separately in the electrode circuit where the electrode circuit The operator (14) will be an instrument for time-varying measurements of the ohms resistance of R9 (t) and R10 (t) of both windings (9, 10) during the passage of the coin ( M) where the control and processing unit (15) determines the maximum resistance R9 (t) of the first winding (9) to the value K1, where the control and processing unit (15) is determined. Determine the local maximum value (M1, M2) of the resistance R10 (t) obtained from the second winding (10) and determine two or more values (V1, V2) of the two maximum (M1, M2) values by Given to K2 and where K1 and K2 or K1 and H2 = K1 + K2 are used in the cut. Consequently, the acceptance or rejection of the coin (M). 2. A device for verifying the authenticity of a coin (M), a silver or other metal coin, with a coin acceptor (I) with a lower side wall (4) and a higher side wall (5). Where the coin chute (1) is tilted at a predetermined angle to the vertical (V) and the coin (M). In the fictitious case of moving to the lower wall (4) in contact manner, there is a The two inductors are arranged along the coin acceptor track (1). The electronic circuit (14) will contain the control and processing unit (15) where the first inductive transmitter will Is a coil (9) attached to the lower side wall (4), wherein the second inductive transmitter is a coil (10) attached to the higher side wall (5) where Trails (13, 14) have been prepared for the coils. For the use of two windings (9, 10), which are electrically separated in there The electronic circuit (14) provides a time-varying measurement instrument of the ohms R9 (t) and R10 (t) ohms of both windings (9, 10) during Passing the coin (M) there, the control and processor (15) determine the maximum reserve resistance R9 (t) of the first winding (9), where it is the K1 value. Result (15) determines the local maximum (M1, M2) of the resistance R10 (t) obtained from the second winding (10) and determines more than two terms (V1, V2) of the maximum value (M1. , M2), where it is the value of K2. The regulator and processing (15) determine the internal resistance r1 of the first winding (9) and the internal resistance r2 of the second winding (10) directly before or after the passage of the coin (M) and at P1 = r1 / K1 and P2 = r2 / K2, or P1 and 12 = P1 + P2, which are used to determine the acceptance or rejection of the coin (M). 3. A device according to one of the claims 1 to 2, where the windings (9, 10) are provided for the impedance measurement of the series resonance circuit (RLC). 4. Equipment according to claim 3 wherein the electronic circuit (14) consists of a differential amplifier (18) and an amplifier circuit (22), where the output of the amplifier The differential (18) is reflected by a resistive resistor (21) to the input input (19) and through the amplifier circuit (22) to the non-inverted input (20). ) And amplifier circuit (22). First of all, it is an electronic commutation circuit (14) that introduces a series resonance circuit (RLC) into oscillation. And second, it is made possible to apply a suitable stable amplitude U3 (t) voltage used to excite a series resonance circuit (RLC). 5. Device according to claim 4, where in the amplifier circuit (22) there are two inverters (24, 25) connected in series or NAND or NOR assembly. 6. Equipment according to any of the claims 3 to 5, where there is a path The route was created in a sequence between the coin pass (M) to determine the contract that Change in resonance frequency (Wo (Ls)) in the first coil (9) and where this contract is used To determine the acceptance or rejection of a coin (M). 7.A device according to any of the claims 1 to 6, wherein a metal plate (11, 12) is fixed in each case on the side wall (5, 4), lying down opposite. With coils (9, 10) 8.A device according to any of the claims 1 to 7 wherein the lower side wall (4) is formed with the splined shaft (7) in the direction of the coin flow. And the radius of curvature (R) of the tooth axis (7) will be at least half the width (a) of the next axis (7). 9. Equipment according to claim 8, where there is The radius of curvature (R) of the tooth axis (7) is approximate to the area (a) of the next axis (7).