TWI574227B - Identification Method of Counterfeit and Its Device - Google Patents

Description

Counterfeit currency identification method and device thereof

The invention relates to a method and device for identifying a counterfeit coin, in particular to an identification method and a device for judging the number of times of coin reflection as the basis for authenticity judgment.

As the ability of unscrupulous people to make counterfeit coins increases, each country's coinage unit is improved for the anti-counterfeiting ability of the coin, as disclosed in the Republic of China New Bulletin No. M443241, which discloses a continuous The coins that change the anti-counterfeiting structure, through the coins, exhibit different anti-counterfeiting patterns and different reflective changes from different perspectives to increase the anti-counterfeiting ability of the coins. However, the above-mentioned anti-counterfeiting structure is still imitated by unscrupulous people and made into counterfeit coins that are difficult for the general public to distinguish.

In this regard, the manufacturer has proposed a device or method for coin identification, as disclosed in the Patent No. 432341 of the Republic of China, which is the surface of the coin that is captured through the image capture of the surface of the coin. The image is image-recognized, but this type of inspection cannot be applied to the above-mentioned coin with a continuously changing anti-counterfeiting structure. The reason is that the patent only captures the coin from a single perspective, but the coin anti-counterfeiting structure needs The use of the anti-counterfeiting structure is only obtained from different perspectives, so that the anti-counterfeiting structure loses its use, and the authenticity of the coin cannot be reliably recognized.

Furthermore, in addition to the above technical solutions, it is also disclosed in the Patent Case No. 409489 of the Republic of China, which treats the coins to project light, to test the multiple marks around the coins, and to use different nicks. Produce different characteristics of light and dark, collect each nick The reflected light determines whether the number of nicks around the coin and the width of each nick are consistent with the real currency, and the coin is recognized as a real coin or a counterfeit coin. However, due to the skill of today's machining and coinage technology, the engraving around the coin is an easy-to-replicate structure, which makes the above technical solution unable to effectively distinguish the authenticity, and the patent case cannot identify the anti-counterfeiting structure of the coin, and also the anti-counterfeiting structure. Lose its use.

The main object of the present invention is to solve the problem that the conventional counterfeit currency identification method cannot perform authenticity identification for coins having a continuously changing anti-counterfeiting structure.

To achieve the above objective, the present invention provides a method for identifying a counterfeit coin for identifying a coin having an anti-counterfeiting structure, the anti-counterfeiting structure generating a continuous reflective change during the rotation of the coin, the method comprising the following steps: Step 1: Placing the coin on a turntable, causing the turntable to rotate to cause the coin to rotate; Step 2: using a brightness sensing component to collect each reflective brightness during the rotation of the coin; Step 3: using a recognition module to a real coin The reflective brightness comparison reference compares each of the reflected brightness levels, and counts the number of times the reflected brightness is higher than the true brightness reflection brightness comparison reference; and step 4: using the identification module to determine the true currency reflection time comparison range Whether the number of matches is true, if it is recognized as genuine currency, otherwise it is a counterfeit currency.

In an embodiment, the step one or the second step further comprises a sub-step of projecting light onto the coin by using a light projecting component.

In one embodiment, the step of rotating the turntable is a circle.

In an embodiment, the step 1 further includes a sub-step of using the brightness sensing component to capture surrounding ambient light to generate a reference light brightness and calibrating the true currency reflective brightness comparison reference with the reference light brightness before the coin is detected.

In an embodiment, the step 1 further includes a sub-step of determining whether the coin is placed on the turntable by using an object detecting component, and if there is continuous recognition, if the identification is not stopped.

In addition to the above methods, the present invention also provides an identification device including a rotary driving member, a turntable, a brightness sensing member and an identification module. The turntable is connected to the rotary driving member and is placed for the coin. The brightness sensing member is disposed corresponding to the turntable, and each reflective brightness of the coin is captured during the rotation of the turntable, and the identification module information is connected to the brightness sensing component. Obtaining the reflective brightness and authenticating the coin with a comparison range of a true currency reflective brightness preset by the identification module and a comparison range of the number of true currency reflections.

In an embodiment, the brightness sensing member is disposed at an oblique angle to the turntable.

In an embodiment, the identification device further includes a pair of light projecting elements disposed on the turntable.

In an embodiment, the light projecting element is disposed at the tilt angle corresponding to the turntable.

In one embodiment, the brightness sensing component includes a photosensitive element and a conversion circuit electrically connected to the photosensitive element to transmit each reflective brightness to the identification module in a voltage mode. Further, the photosensitive element is a blue light sensing element, and the light projecting element is a warm white light emitting diode.

In an embodiment, the identification device further has an object detecting component that connects the identification module and detects the rotating disk after starting.

In an embodiment, the identification device further has a prompting component connected to the identification module.

Through the above technical solution of the present invention, the present invention has the following features: the present invention collects each reflective brightness generated during the rotation of the coin, and compares each of the reflective brightness based on the true currency reflective brightness comparison reference, and counts the The brightness of the reflection is higher than the number of times the comparison brightness of the genuine currency is reflected, and it is determined whether the number of times after the statistics falls within a comparison range of the number of reflections of the true currency, thereby achieving the authenticity test for the structure having the continuously changing security structure. purpose.

1‧‧‧ Identification device

11‧‧‧Rotary drive

12‧‧‧ Turntable

13‧‧‧Brightness sensing

131‧‧‧Reflective brightness

132‧‧‧Reference brightness

14‧‧‧ Identification Module

141‧‧‧Micro Control Unit

142‧‧‧Transition circuit

15‧‧‧Reminder components

16‧‧‧Lighting elements

17‧‧‧ Object detection parts

20, 21, 22, 23 ‧ ‧ steps

24, 25, 26‧ ‧ substeps

9‧‧‧ coins

FIG. 1 is a schematic view showing the appearance of a device according to an embodiment of the present invention.

FIG. 2 is a partially exploded perspective view of an apparatus according to an embodiment of the present invention.

3 is a partial top plan view of a device in accordance with an embodiment of the present invention.

Figure 4 is a schematic flow chart of the first embodiment of the method of the present invention.

Figure 5 is a flow chart showing the second embodiment of the method of the present invention.

Figure 6 is a flow chart showing the third embodiment of the method of the present invention.

The detailed description and the technical content of the present invention are as follows: Referring to FIG. 1 to FIG. 4, the method and device for identifying the counterfeit currency of the present invention are mainly used for identifying a coin 9 having an anti-counterfeiting structure. The anti-counterfeiting structure exhibits different visual effects when viewed from different viewing angles through optical design, and the anti-counterfeiting structure produces a continuous reflective change during the rotation of the coin 9. For example, the coin 9 can be a NT$50 coin of the Republic of China.

In order to specifically describe the technology of the present invention, the identification device 1 of the present invention is described first. The identification device 1 includes a rotary driving member 11, a turntable 12, a brightness sensing member 13, and an identification module 14. The rotary driving member 11 is preferably a stepping motor or an element that is set to rotate at a constant speed. The turntable 12 is assembled with the rotary drive member 11 and rotates synchronously as the rotary drive member 11 rotates. On the other hand, the turntable 12 allows the coin 9 to be placed thereon. Further, the brightness sensing member 13 is disposed corresponding to the turntable 12, and captures each of the reflected brightness 131 of the coin 9 during the rotation of the turntable 12. Further, in order to make the brightness sensing member 13 more positively feel the reflection change caused by the rotation of the coin 9, in an embodiment, the brightness sensing member 13 is disposed at an oblique angle to the turntable 12. Moreover, the identification module 14 of the present invention is designed and constructed by a plurality of electronic components, and the electronic components include at least one micro control unit 141, and the micro control unit 141 is written by means of programming or the like. a language, and a preset comparison range of a true currency reflective brightness comparison and a true currency reflection time comparison range, wherein the true currency reflective brightness comparison reference is used to compare the reflected brightness levels 131, and the true currency reflection times are compared The range is a range of values, and the number of times the reflection brightness 131 is greater than the comparison of the true brightness reflection brightness is used as a determination factor. Moreover, in an embodiment, the true currency reflective brightness comparison reference is set to a voltage level, and the identification module 14 has a conversion circuit 142 that converts each of the reflective brightness 131 into a voltage type, specifically The conversion circuit 142 is an analog/digital conversion circuit, and the conversion circuit 142 converts the result detected by the brightness sensing unit 13 at a sampling frequency, and the sampling frequency can be adjusted according to the implementation requirements. . In the embodiment, the identification device 1 further has a prompting component 15 connected to the identification module 14. The prompting component 15 can be a buzzer or a display, and the prompting component 15 accepts the identification module. The identification result of the group 14 is notified to the operator by the prompting means such as buzzer or display.

With reference to FIG. 1 to FIG. 5, the identification method comprises the following steps: a) Step one 20: placing the coin 9 on the turntable 12, causing the turntable 12 to rotate to rotate the coin 9; b) Step 2: Using the brightness sensing component 13 to collect each of the reflective brightness 131 during the rotation of the coin 9; c) Step 3: Using the identification module 14 to compare the brightness of each of the reflective brightness The comparison is performed to determine whether the number of times the reflection brightness 131 is higher than the comparison level of the true light reflection brightness comparison level; d) step 4: 23: using the identification module 14 to determine whether the number of times is consistent with the comparison range of the true currency reflection times, if Identify the real currency, otherwise it is a counterfeit currency.

Specifically, in the initial step of the implementation of the identification method of the present invention, the coin 9 is placed on the turntable 12 with the anti-counterfeiting structure, that is, the coin 9 has the security knot. The one side of the structure directly faces the brightness sensing member 13 , and then the rotating driving member 11 is activated to rotate according to the operation instruction given by the micro control unit 141 , and the rotating wheel 12 is rotated by the driving of the rotating driving member 11 . And go to step 221. In an embodiment, when the step 20 is performed, the micro control unit 141 rotates the rotary driving member 11 by a circumference to rotate the turntable 12 by a circumference. In the second step 21, the coin 9 on the turntable 12 is continuously reflected by the rotation. At this time, the coin 9 is collected by the brightness sensing member 13 corresponding to the turntable 12. Each of the reflective brightness 131 in the middle of the rotation, that is, the brightness sensing member 13 collects the reflected brightness 131 of the coin 9 during the rotation of the circumference, and proceeds to the step 3-22. During the execution of the step 3 22, the recognition module 14 receives the reflected brightness 131 transmitted by the brightness sensing component 13 and compares the true color reflective brightness presets in the identification module 14 for each A comparison of the reflected brightness 131 determines whether each of the reflected brightnesses 131 is higher than the true-light reflected brightness comparison reference, and counts the number of times the reflected brightness 131 is higher than the true-light reflected brightness comparison reference. More specifically, the identification module 14 compares each of the reflective brightnesses 131 one by one. When one of the reflective brightnesses 131 is higher than the true-light reflected brightness comparison reference, the identification module 14 records once, and then another When the reflective brightness 131 is higher than the brightness determination reference, the identification module 14 is accumulated once, and so on, until each of the reflected brightness 131 detected by the coin 9 in the identification process is compared, and thereafter The identification module 14 counts the number of times the reflected brightness 131 is higher than the true light reflection brightness comparison reference, and proceeds to the step 4-23. During the execution of the step 4 23, the identification module 14 determines whether the number of times matches the preset number of comparisons of the true currency reflection times, and if the number falls within the range of the comparison range of the true currency reflection times, that is, the identification It is a real coin, if it is a counterfeit currency. Furthermore, the setting range of the true coin reflection number comparison range may be based on the number of times the continuous reflection change exceeds the light determination criterion when the coin 9 is a genuine coin, and the confidence range is increased, and the true coin reflection number comparison range is more Average of the number of times that can be identified for a plurality of genuine coins value. For example, when the comparison range of the number of true currency reflections is four to five times when the number of rotations of the coin 9 is more than four times and five times, the number of times recognized by the coin 9 is four times. When it is judged to be a genuine coin, if the number of times recognized by the coin 9 is three times, it is judged as a counterfeit currency. Furthermore, the above identified method of the present invention can be further adjusted accordingly due to the difference in the material of the coin 9 or other factors.

2, 4, and 6, in an embodiment, the identification device 1 further includes a pair of light projecting elements 16 disposed on the turntable 12, and the light projecting element 16 is further subjected to the identification module 14 The included micro control unit 141 controls, and during the identification process of the coin 9, the turntable 12 is provided with light to illuminate the coin 9, making the reflection of the coin 9 more apparent. Thus, the identification method of the present invention further includes a sub-step 24 of projecting light onto the coin 9 by the light projecting component 16 in the step 20 or the second step 21. Furthermore, the light projecting element 16 of the present invention is further disposed at an oblique angle to the turntable 12, as shown in FIG. In addition, in an embodiment, the brightness sensing component 13 can be a blue light sensing component, and the light projecting component 16 is a warm white light emitting diode, thereby ensuring the brightness sensing component according to the difference in color temperature of the transmitted light. 13 can receive each of the reflective brightnesses 131 on the way of the coin 9 rotation.

Referring to FIG. 2 to FIG. 6 , in an embodiment, the identification device 1 further has an object detecting component 17 . The object detecting component 17 is connected to the identification module 14 and is activated by the identification module 14 . The turntable 12 is detected. Specifically, the object detecting member 17 is used to determine whether the coin 9 is placed in the turntable 12, and if so, can be detected. Furthermore, in an embodiment, the detection result of the object detecting component 17 can be used as a basis for starting recognition. Accordingly, the step 20 of the identification method of the present invention may further include a sub-step 25 of determining whether the coin 9 is placed on the turntable 12 by using the object detecting component 17, and if there is continuous recognition, if the identification is not stopped.

The identification device 1 of the present invention further enables the brightness sensing component 13 to detect the ambient light source around the identification device 1 or the turntable 12 before performing the identification, or to detect a reference. The brightness brightness 132 is used to calibrate the true light reflection brightness comparison reference with the reference light brightness 132. According to the method, the step 20 of the identification method of the present invention further utilizes the brightness detecting component 13 to capture ambient ambient light to generate the reference. Light brightness 132 calibrates sub-step 26 of the true currency reflective brightness comparison reference. Therefore, during the execution of the step 20, the identification module 14 can pre-activate the brightness detecting component 13 to cause the brightness detecting component 13 to sense ambient ambient light to generate the reference light brightness 132, and The reference light brightness 132 is transmitted to the micro control unit 141 of the identification module 14 to cause the micro control unit 141 to calibrate the true currency reflective brightness comparison reference according to the written programming language, so that the genuine currency is reflected. The brightness comparison benchmark can be adjusted according to the current detection environment to increase the credibility of the currency. In summary, the method and device for identifying the counterfeit currency of the present invention are used to identify a coin having an anti-counterfeiting structure, and the anti-counterfeiting structure generates a continuous reflective change during the rotation of the coin. The invention collects each reflective brightness generated during the rotation of the coin, and compares each of the reflective brightnesses based on a true currency reflective brightness comparison reference, and counts the number of times the reflected brightness is higher than the true currency reflective brightness comparison reference Then, it is judged whether the number of times after the statistics falls within the comparison range of the number of reflections of the genuine coins, and if it is, it is recognized as genuine coins, otherwise it is a counterfeit currency. Therefore, it is impossible to solve the problem of authenticity detection for coins having a continuously changing anti-counterfeiting structure by solving the conventional identification method.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.

20, 21, 22, 23 ‧ ‧ steps

Claims (13)

A method for identifying a counterfeit coin for identifying a coin having an anti-counterfeiting structure, the anti-counterfeiting structure generating a continuous reflective change during the rotation of the coin, the method comprising the following steps: Step 1: placing the coin on a turntable, Rotating the turntable to rotate the coin; Step 2: using a brightness sensing component to collect each reflective brightness during the rotation of the coin; Step 3: using a recognition module to compare each of the true currency reflective brightness The brightness of the reflection is compared, and the number of times the reflection brightness is higher than the comparison level of the true brightness reflection brightness is counted; and the step 4: using the identification module to determine whether the number is consistent with a comparison range of the true currency reflection times, if the recognition is true Currency, otherwise it is a counterfeit currency. The method for identifying a counterfeit currency according to claim 1, wherein the step one or the second step further comprises a sub-step of projecting light into the coin by using a light projecting component. The method for identifying a counterfeit currency according to claim 1 or 2, wherein the step 1 rotates the turntable by a circumference. The method for identifying a counterfeit currency according to claim 1 or 2, wherein the step 1 comprises: using the brightness sensing component to capture surrounding ambient light to generate a reference light brightness and correcting the genuine light with the reference light brightness before the coin verification The sub-step of the contrast brightness comparison benchmark. The method for identifying a counterfeit currency according to claim 4, wherein the step 1 further comprises: using an object detecting component to determine whether the coin is placed on the turntable, and if there is continuous recognition, if the step of identifying is stopped. A counterfeit currency discriminating device for recognizing a coin having an anti-counterfeiting structure, the anti-counterfeiting structure generating a continuous reflective change during the rotation of the coin, the recognizing device comprising: a rotary driving member; a turntable, and the rotating The driving component is assembled and placed for the coin; a brightness sensing component is disposed corresponding to the turntable, and each reflective brightness of the coin is captured during the rotation of the turntable; an identification module is connected to the brightness sensing component to obtain the Reflecting the brightness and authenticating the coin with a comparison range of the true currency reflective brightness preset by the identification module and a comparison range of the number of true currency reflections. The discriminating device of the counterfeit currency according to claim 6, wherein the brightness sensing member is disposed at an oblique angle corresponding to the dial. The discriminating device for a counterfeit coin according to claim 6 or 7, wherein the recognizing device further comprises a pair of light projecting elements disposed on the turntable. The identification device of the counterfeit currency according to claim 8, wherein the light projecting element is disposed at the tilt angle corresponding to the turntable. The discriminating device of the counterfeit currency according to claim 8, wherein the real coin reflective brightness comparison reference is a voltage level, and the identification module has a conversion circuit that converts each reflective brightness into a voltage type. The identification device of the counterfeit currency according to claim 8, wherein the brightness sensing component is a blue light sensing component, and the light emitting component is a warm white light emitting diode. The identification device of the counterfeit currency according to claim 6 or 7, wherein the identification device further has an object detecting component that connects the identification module and detects the turntable after starting. The identification device of the counterfeit currency according to claim 6 or 7, wherein the identification device further has a prompting component connected to the identification module.