KR20160113878A - Recognition apparatus for face value of bill and detection apparatus for counterfiet bill - Google Patents

Abstract

The present invention relates to an apparatus to recognize a bill type and to detect a counterfeit bill. The apparatus comprises: an LED having different wavelengths and emitting light to a bill; a light collecting board to collect light which passes through the bill; a light reception sensor located on a position to collect the light; a control unit to determine whether the bill is the counterfeit bill based on a signal received by the light reception sensor; and a memory unit to store reference data to enable the control unit to determine the counterfeit bill and to store an execution algorithm of the control unit. The apparatus further comprises a light guide to equally emit the light of the LED. The light of the LED to emit the light having different wavelengths around the bill is diffused via the light guide. The light passing through the bill is collected by the light collecting board. The purpose of the present invention is to provide the apparatus capable of effectively recognizing and discriminating the counterfeit bill by locating the light reception sensor on a position in which the light is collected by the light collecting board, by extracting the data of the bill for each area and the whole area by using a color, an infrared sensor, and an ultraviolet sensor, and by comparing the data of the bill with reference data.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a counterfeit bill detection apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a currency discrimination and counterfeit currency detection apparatus, and more particularly, to an apparatus and method for detecting currency denomination and counterfeit currency bills. More specifically, light emitted through a LED, an infrared LED, The light emitted from the light source is made to be collected through the light collecting plate and an infrared sensor, an ultraviolet sensor and a color sensor are positioned in the region where the light is gathered so that reaction values for all the parts of the paper money can be extracted, And a counterfeit recognition and counterfeit banknote detection device for discriminating whether or not the denomination discrimination and forgery are possible.

In general, counterfeiting imitates real bills and makes false bills like real ones, such as photographs, printing, or hand-drawing. There are two types of printing forgery: photographic plate and engraving plate. Usually, photographic plates are used when manufacturing large quantities of counterfeit bills. And, the modulation is a method of modifying the value of the bill by processing the real bill by separating the right side from the front side and the back side.

Many of these counterfeit bills are mainly made up of international counterfeiters, and their organizations are divided into groups such as funding, technology, and events, making investigation difficult. In recent years, counterfeiting of sovereignty and traveler's checks has been increasing in addition to currency.

In other words, counterfeiting of bills, checks, gift certificates, securities, etc. has recently increased worldwide. As a result, there is an increasing need to discriminate not only denomination types but also whether or not counterfeiters are used in the bill recognizer, the bill counter, and the refillable cash dispenser.

A common method of discriminating between counterfeits is a method of detecting a fluorescent substance printed on a banknote or a lipid of a bill using a UV LED (or lamp) as a light source.

Of course, Korean Patent No. 10-0873965 discloses " An identification sensor unit including a plurality of sensors arranged on the lower body and the upper body; A bill type selection unit for determining whether the bill inserted in the bill transfer is a cash or a check; And a display unit arranged on the upper body; A comparator for comparing a received signal value with a reference value of the storage unit, a selection unit for selecting a sensor type of the identification sensor unit according to a designation of the bill type selection unit, And displaying the bill information on the display unit according to the bill information; A counterfeit compound identification device comprising a "

In addition, Korean Patent No. 10-0874171 discloses that "above the normal banknote counterpart portion, there is provided a fixing protrusion for fixing the denominated banknote to the floor surface in order to discriminate the counterfeit which is accumulated in the normal banknote counterpart portion when discriminating the counterfeit from the counterfeit detecting sensor, A counterfeit picking part that forms a counterfeit bill; An infrared camera is formed on an upper side of the counterfeit receiver for photographing banknotes picked up by the counterfeit picking up unit, image data on a normal banknote by the ticket type is input to the central processing unit, And an auxiliary central processing unit operable to compare and analyze the image of the input normal denominated banknotes and to display the normal banknotes and the counterfeit central banknotes on the status display window when discriminating counterfeit money. Counter. &Quot;

However, the above-described patent technology does not provide a counterfeit detection function that allows an image processor or the like to be used when distinguishing a denomination,

Therefore, even though a predetermined number of sensors are used, it is inevitable to develop a technique for detecting counterfeit money, which can extract the reaction value for all parts of the paper money and realize a low price without using a separate image processor.

Prior Art 1: Korean Patent No. 10-0873965, Date of Registration (December 08, 2008) Prior Art 2: Korean Patent No. 10-0874171, Date of Registration (December 09, 2008)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus and method for detecting denominations and counterfeit bills which enable to extract reaction values for all parts of bills even when a predetermined number of sensors are used, .

The object of the present invention can be achieved by an image forming apparatus including an LED having different wavelengths for irradiating light on a bill, a light collecting plate for collecting light passing through the bill, a light receiving sensor positioned at a position where light is collected, And a light guide for uniformly emitting light of the LED in a counterfeit detector having a control part and a memory part storing a reference data judged by the control part and an execution algorithm of the control part, The light emitted from the light emitting LED is diffused through the light guide to be transmitted to the banknote, the light transmitted through the banknote is collected through the light collecting plate, and the light receiving sensor is positioned at the position where the light is collected through the light collecting plate Do.

The light guide may include a light guide cover that reflects light or cuts off light on an outer surface except for a surface on which light is emitted from the light guide or performs white printing on the outer surface of the light guide, And compares it with the reference data stored in the memory unit.

In addition, a light collecting plate is provided in each of the regions separated by at least two regions, and each data is extracted for each region, and the sum data of the respective regions is compared with the reference data.

The LEDs having different wavelengths are a white LED, an infrared LED, and an ultraviolet LED. The light receiving unit is an ultraviolet sensor for detecting ultraviolet rays, a color sensor for detecting a white LED, and an infrared sensor for detecting infrared rays.

In addition, as a method of another embodiment, an LED having different wavelengths for irradiating light on a banknote, a light collecting plate for collecting light passing through the banknote, a light receiving sensor located at a position where light is collected, In a counterfeit detector having a control unit for determining whether or not counterfeit money is present and a memory unit for storing reference data to be determined by the control unit and an execution algorithm of the control unit, the bill is moved between the LEDs having different wavelengths and the light receiving sensor, The length of the banknote is larger than the length of the banknote, and the total length of the light guide arranged in a direction perpendicular to the direction in which the banknote is moved and the light guide arranged in the direction perpendicular to the direction in which the banknote moves is also larger than the length of the banknote.

According to the present invention, it is possible to collect the light of the white LED, the ultraviolet ray and the infrared ray, which have passed through the banknote, into three regions, and to collect the bills of each region and the entire region through the CLOOR, And comparing the data with the reference data, so that discrimination of denomination and counterfeiting can be performed very effectively.

1 and 2 are views showing the principle of a conventional apparatus.
3 is a view showing an embodiment showing the principle of the bill detection sensor of the present invention.
Figs. 4 to 7 are views showing embodiments of a bill detection apparatus according to the present invention.
Figures 8 and 9 are views of embodiments of the present invention showing block diagrams and methods of operation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description.

Further, a detailed description of the known technology may be omitted.

The present invention relates to an apparatus and method for recognizing denominations and forgery using a predetermined number of light receiving sensors. More particularly, the present invention uses a light collecting device (light collecting plate) for extracting images for image recognition of counterfeiting, So that the transmitted image can be extracted.

Particularly, in the present invention, in order to irradiate light to the entire area of a banknote, a light emitting unit for irradiating light on one side with respect to a banknote as a reference; A light guide, and a light guide cover, wherein the light emitting LED BOZARD is composed of an ultraviolet LED, a white LED, and an infrared LED and is attached to the left and right of the light guide to irradiate light, And a light guide cover which reflects the light to enhance the light efficiency.

And a light receiving unit for receiving light transmitted through the banknote on the other side of the banknote; A light receiving sensor BOARD, a light collecting device (light collecting plate), and a light collecting cover, and the light receiving sensor BOARD is equipped with an ultraviolet sensor, a color sensor, and an infrared sensor.

The light-collecting device (light-collecting plate) includes a means for extracting the values of the respective sensors, a discriminating means for comparing the extracted data with the reference data to judge whether the banknotes are forged or not, Collects the light to the place where the light receiving sensor is located, and the light collecting cover increases the light efficiency of the transmitted light collecting plate.

Therefore, a feature of the present invention is that a single set of light receiving sensors is used to extract all the reaction values of the banknote horizontal portion, and the vertical portion is obtained by extracting the reaction value of the horizontal portion of the banknote by continuously conveying the banknote by the motor, Since the data is extracted, it is possible to judge whether or not it is an excellent model and counterfeit.

1 and 2 are views showing the principle of a conventional apparatus.

The conventional apparatus generally includes a main frame 11 for supporting the entire components of the apparatus, a bill input port 1 for inputting the bill 13, a motor 4 for conveying bill, A white LED 5, a light receiving color sensor 8, an ultraviolet LED 6, and an infrared ray sensor 6. The IDLE rollers 2 press the banknotes when the banknotes are fed through the main power rollers 3, An ultraviolet LED 9, an ultraviolet LED 7, an ultraviolet sensor 10, and the like.

Then, when the bill is conveyed by driving the motor, each sensor detects the data transmitted through the bill to detect whether or not the card is falsified.

At this time, the detection region is limited to only the sensing paths 14, 15, 16 of the sensors 5, 6, 7 where the sensors 5, 6, 7 are located. That is, since the banknote 13 moves in the direction of the arrow S shown in the drawing, the sensor sensing paths 14, 15, 16 are formed only in the portion where the sensors 5, 6, It is difficult to extract data in the banknote 13 area other than the sensing paths 14, 15, and 16.

Since only a part of the banknote 13 is detected as described above, the positions of the sensors must be different according to each denomination and the banknotes of each country, and the discrimination power of the denomination classification and forgery is deteriorated.

In order to compensate for this problem, increasing the number of sensors leads to a problem that the price is increased and the physical size of the sensor (Min 5 mm) is limited.

3 is a view showing an embodiment showing the principle of the bill detection sensor of the present invention.

As shown in the drawing, the white LED 21 and the infrared LED 22 mounted on both sides of the light guide 20 and the light guide 20 on the other side of the banknote (the banknote is positioned in the direction of the arrow IN in FIG. 3) A condenser 26 for condensing the light transmitted through the bill, an infrared sensor 27 for extracting the collected light data, an ultraviolet sensor 28, a color sensor 28, (29), and light receiving portions (30), (31), and (32), respectively.

That is, when light is emitted from the white LED 21, the infrared LED 22, and the ultraviolet LED 23 provided on the side surface of the light guide 20, the emitted light passes through the light guide 20 in the downward direction The light emitted from the light guide 20 is incident on the light receiving portions 30, 31 and 32. The light incident on the light receiving portions 30, 31 and 32 is incident on the light collecting plate 26, . The collected light through the condenser plate 26 is detected by the infrared sensor 27 and the COLOR sensor 29 (sensing the light emitted from the white LED).

Figs. 4 to 7 are views showing embodiments of a bill detection apparatus according to the present invention.

4 and 5 are views showing an embodiment showing a front view and a side view of the bill sensing apparatus of the present invention. As a result, as shown in FIG. 4, a white LED 21, an infrared LED 22, and an ultraviolet LED 23 mounted on both sides of the light guide 20 are provided and the LEDs 21, 22, The emitted light exits the light guide and enters the light receiving portions (30, 31, 32) of the condensing plate.

The light-collecting plate 26 may use the same principle as a convex lens that focuses light to a focal point.

FIG. 5 is a view showing an embodiment in which a bill is inserted and detected. The principle in which a bill is inserted and moved by a roller is the same as that in the embodiment of FIG. 1, The emitted light passes through the light guide 20 and passes through the banknote, the light passing through the banknote is collected by the collecting plate 26, and the collected light is sensed by the sensors 27, 28, 29 .

On the other hand, for the efficiency of light, the outer surface of the light guide 20 (indicated by A in the drawing and excluding the lower surface from which the light is emitted from the light guide) blocks light emission. Likewise, the outer surface of the light-collecting plate 26 (indicated by A in the drawing, excluding the surface on which the light is incident on the light-collecting plate and the light-collecting area) is also blocked.

In addition, the light guide 20 is made of a transparent plastic resin such as polycarbonate or PET, so that light can be easily transmitted. The outer surface of the light guide 20 is coated with a white paint, Thereby enhancing the efficiency of light. Further, the light guide has a function of diffusing, so that light incident on both sides of the light guide is uniformly emitted in a downward direction.

In addition, the light-collecting plate is made of transparent plastic resin such as glass or polycarbonate or PET so that light can be transmitted well, and the light collecting plate serves to focus light like a convex lens. In this case, in the present invention, So that the sensors 27, 28, and 29 are positioned.

6 and 7 are views showing the relationship between the light collecting plate 26 collecting the light transmitted through the banknote, the light guide 20 transmitting the light through the banknote, and the position of the banknote 13. FIG. 6, the length of the entire light collecting plate 26 is larger than the length of the paper currency 13, so that light from the entire paper currency can be detected. As shown in FIG. 7, the entire length of the light guide 20 The length of the banknote 13 is larger than the length of the banknote 13, so that light is emitted to the entire banknote 13.

6, when the banknotes are moved, the light-collecting plates 26 arranged in the direction perpendicular to the direction in which the banknote is moved are larger than the length of the banknote 13 as a whole, The light collected by the light condensing plate 26 becomes the light transmitted through the entire banknote 13.

7, when the banknote is moved, the light guide 20, which is arranged in a direction perpendicular to the direction in which the banknote is moved and the total length is greater than the length of the banknote 13, So that the light emitted from the light guide 20 can be transmitted through the entire banknote 13.

Figures 8 and 9 are views of embodiments of the present invention showing block diagrams and methods of operation.

8, the signals output from the infrared sensor 27 and the color sensor 29 are subjected to a stabilization process and an amplification process through the data processing unit 60. Then, The signal output from the magnetic sensor 18, which is measured using the property of reacting with the CrO3 component contained in the ink, is subjected to the stabilization process and the amplification process through the data processing unit 60,

In general, since the analog signal output through the sensor is an analog signal, the analog signal is converted into a digital signal that can be transmitted to the control unit through the data conversion unit (AD converter unit) 51.

In addition, an input unit 54 for inputting necessary information, a display unit 53 for displaying execution information of the counterfeit detector, and an alarm unit 52 for alarming the occurrence of a counterfeit detection may be further provided.

The control unit 50 not only controls each of the devices but also determines the authenticity of the bill by comparing and analyzing the data of the banknotes stored in advance in the signal received from the data conversion unit (AD converter unit) 51.

9, the light emitted from the light emitting unit is sensed by the sensor unit and is determined by the control unit. For example, when the bill is charged, the white LED is lit, the COLOR DATA transmitted through the bill is extracted, The ultraviolet LEDs are turned on and the ultraviolet rays DATA transmitted through the banknote are respectively extracted. After the ultraviolet LEDs are turned on, the infrared LEDs are turned on to extract the infrared data transmitted through the banknotes. If the above process is performed alternately, data of the entire banknote can be extracted. COLOR DATA, UV DATA and IR DATA of each region are extracted, and COLOR DATA of the entire banknote, DATA, and infrared data. The data extraction is performed by the control unit 50 according to a predetermined algorithm.

Then, the controller compares the extracted DATA with the reference data to determine whether the data is a denomination or a counterfeit. At this time, the reference data and the algorithm performed by the control unit are stored in the memory unit 55.

In addition, the steps of performing the banknote sensing are summarized as follows.

(1) White LED ON

     COLOR Color value detection (BLOCK1, BLOCK2, BLOCK3)

(2) Infrared LED ON

     Detection of reaction value of infrared sensor (BLOCK1, BLOCK2, BLOCK3)

(3) UV LED ON

     Response value detection of ultraviolet sensor (BLOCK1, BLOCK2, BLOCK3)

Repeat (1), (2), and (3) until the banknote is completely passed.

The maximum value, average value, minimum value, and change amount of the sensor value, including the maximum value, the average value, the minimum value, and the variation amount of BLOCK1,2,3 and BLOCK1,2,3 are calculated and compared with the pneumatic data, .

In the above-described embodiment, the area is divided into three areas. However, as the area is increased, it is possible to discriminate whether the denomination and the counterfeit are accurate or not. However, the present invention is not limited thereto. Can be used.

In addition, the present invention can be applied to banknote counters, banknote banknote counters, financial automatic machines (CD machines, ATM machines), and various banknote recognizers.

20: light guide 21: white LED
22: Infrared LED 23; Ultraviolet LED
26: condenser plate 27: infrared sensor
28: ultraviolet sensor 29: color sensor

Claims (6)

An LED having different wavelengths for irradiating light on a banknote, a light collecting plate for collecting light passing through the banknote, a light receiving sensor positioned at a position where light is collected, a control unit for judging whether or not the signal is received by the light receiving sensor, And a memory unit for storing the reference data and the execution algorithm of the control unit,
And a light guide for emitting the light of the LED uniformly is further provided so that the light of the light emitting LED which irradiates light of different wavelengths to one side of the banknote is diffused through the light guide to be transmitted to the banknote,
Wherein a light receiving sensor is positioned at a position where light is collected through the light collecting plate and light passing through the banknote is collected through a light collecting plate. The apparatus according to claim 1, further comprising a light guide cover for reflecting light or shielding light from an outer surface except the surface on which light is emitted from the light guide, or performing white printing on the outer surface, Counterfeit bill detection device The apparatus of claim 1, wherein the control unit extracts a data signal received from the light receiving sensor and compares the received data signal with reference data stored in a memory unit to recognize a denomination, recognize a denomination, and detect counterfeit notes. The apparatus of claim 1, further comprising: at least two or more regions, each having a light collecting plate in each of the regions, extracting data for each region, and comparing the data of all the regions with the reference data And a counterfeit recognition and counterfeit bill detection device. The LED according to claim 1, wherein the LEDs having different wavelengths are a white LED, an infrared LED, and an ultraviolet LED, wherein the light receiving unit is an ultraviolet sensor for detecting ultraviolet rays, a color sensor for detecting a white LED, Characterized in that it comprises: An LED having different wavelengths for irradiating light on a banknote, a light collecting plate for collecting light passing through the banknote, a light receiving sensor positioned at a position where light is collected, a control unit for judging whether or not the signal is received by the light receiving sensor, And a memory unit for storing the reference data and the execution algorithm of the control unit,
The banknote is moved between the LEDs having different wavelengths and the light receiving sensor. The light guide is arranged in a direction perpendicular to the direction in which the entire length is longer than the length of the banknote,
And the total length of the light collecting plates arranged in the direction perpendicular to the moving direction of the banknote is larger than the length of the banknote.

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