KR20010009029A - Apparatus and Methods for distinguishing a counterfeit note - Google Patents

Abstract

PURPOSE: A paper money identifier is provided to identify the genuineness of paper money more correctly regardless of the kind of the paper money as counterfeit paper is circulating CONSTITUTION: A step motor is installed with a porter interrupt to generate and output encoder pulse. A driving sensor receives signals to operate the motor. Apart from the driving motor, a sensor counts the pulse of the encoder when a paper money is recognized. A magnetic sensor senses the part of the paper money printed with ink containing iron elements. And several infrared ray sensors located in parallel with the magnetic sensor beam infrared rays to identify the property of the paper money. The reflected rays are checked by a light phase sensor. Then, an amplifier measures the size of the paper money and the distance between parts of the paper money, according to the number of the pulse input from the step motor, and amplifies signals input from the sensor. Finally, a main producer unit determines the genuineness of the paper money.

Description

Apparatus and Methods for distinguishing a counterfeit note

The present invention relates to a banknote recognizing apparatus and a banknote recognizing method for detecting the authenticity of banknotes, and more particularly, to a banknote recognizing apparatus and a banknote recognizing method for discriminating counterfeit banknotes copied without permission using a copying machine or a scanner.

Currently, the currency used in Korea is 10 won, 50 won, 100 won, 1,000 won, 5,000 won and 10,000 won. Recently, with the development of the performance of color copiers and color printing presses, cases of forging banknotes using color copiers or color printing machines have frequently occurred, causing social controversy. Or by being counterfeit, not only ordinary users but also experts have had difficulty distinguishing between counterfeit and counterfeit bills.

Generally, various banknotes are provided with various patterns, negatives, or subscripts to prevent counterfeiting. For example, in the case of 10,000 books shown in FIG. 1, the portion 101 is a thin solid line connected in a single line. This circle is printed so as to distinguish whether or not it is clogged according to the interval between these solid lines and the resolution thereof, and the part 102 is used to determine whether or not the negative of the person appears on the back when the part 102 is lit. Therefore, it is to distinguish between pneumoconiosis.

The part 103 is a silver line printed with aluminum foil, and is used to distinguish between the cough and the lungs when the 10,000 won winding is reproduced by using color copying or color scanning. ) Is to distinguish between pneumoconiosis by making the “10000” positioned below look three-dimensional when viewed using holographic.

In addition, when the part 105 is transmitted through the laser beam in the state of stacking a plurality of bills using a printing ink containing an iron (Fe) component, when there is a bill printed with a forgery in the bills, As the laser beam is blocked, the portion 105 does not appear normally, and it is for discriminating whether pneumoconiosis is present, and the portion 106 is a position where the dragon pattern is the same on the front and back sides of the banknote, for example, in the case of 10,000 won bill. Are symmetrically printed in the same direction, to distinguish pneumonia according to whether the pattern is misaligned when illuminated by light, and part 107 is for the visually impaired to distinguish the swelling by using the senses. It is printed so as to be extruded finely, and each volume, that is, 1,000 won bill has one subscript, 5,000 won bill has two subscripts, and 10,000 won bill has a subscript from the drawing. Three subscripts are arranged at intervals as can.

On the other hand, parts (1,3) are provided only for 10,000 won, it is not currently available for 1,000 won and 5,000 won.

In addition to these, a variety of means are provided in the banknotes to prevent the forgery of the banknotes, by which means it is distinguished.

Various apparatuses have been proposed in the past to distinguish between pneumococcal using means as described above, one of which is Utility Model Registration Application No. 97-7209 filed under the name of counterfeit money recognition device.

This invention is designed to recognize counterfeit bills for 10,000 won bills. Especially, when copying bills using a color copier or color scanner, the counterfeit bill is determined by determining the relative resolution of the copier or scanner rather than the resolution of the original bill. To this end, the present invention aims to capture an image of a detected part and an image information position detector that detects the corresponding information by designating a pattern, pattern, or letter printed on a part of a bill. Compares a signal obtained by comparing a photographing device, an enlarger for enlarging an image photographed by the photographing device at a predetermined magnification, a database part in which various information related to printed bills is embedded, and data input from the enlarger and the database part, respectively, A comparator for outputting, a silver foil position detector for detecting the position of the silver foil printed on the bill, and silver A silver foil detection means for detecting the presence and authenticity of foil, a low pass filter for passing only the low-pass components of the signal detected by the silver foil detection means with an attenuation, an amplifier for amplifying the signal filtered by the low pass filter to a predetermined magnitude; A first AND gate for receiving the signal compared by the comparator and the amplified signal from the amplifier and performing a logical multiplication to output the calculated signal, and another kind of counterfeit detection unit for detecting the authenticity of the counterfeit money; Comparing the second AND gate to output the calculated signal by performing a logical product operation on the signal input from the first AND gate and the other type of counterfeit detection unit, and comparing the logic signal input from the output terminal of the second AND gate; Microcomputer that calculates and outputs control signal, and receives and saves microcom's control signal or outputs stored data And a memory unit to and display the authenticity of the counterfeit bank notes of the read control signal to the microcomputer, and a read error indicator.

Such a design checks the resolution by enlarging the photographed image after photographing banknotes, and distinguishes whether or not pneumoconiosis is detected according to whether a 10,000 won winding silver line is detected.

However, the conventional banknote recognizing apparatus as described above is only for confirming whether the 10,000 won bills are abolished, and there is a problem in that it is not accurate to check whether the 1,000 won bills or the 5,000 won bills are abolished.

Accordingly, an object of the present invention is to solve the conventional problems as described above, while providing a banknote recognition device that can recognize whether the banknotes coughing more accurately, while recognizing the coughing regardless of the paper type. There is.

1 is a front view of a 10,000 won bill.

Figure 2 is a side cross-sectional view schematically showing a bill recognition apparatus according to the present invention.

3 is a view schematically showing an upper portion of the banknote recognizing apparatus shown in FIG.

4 is a view schematically showing a lower part of the banknote recognizing apparatus shown in FIG.

5 is a block diagram of a bill recognition device according to the present invention.

Figure 6 is a flow chart for determining the authenticity of the bill by measuring the length of the bill in the bill recognition apparatus according to the present invention.

FIG. 7 is a flow chart for determining a paper type classification of a banknote using a magnetic sensor installed in the banknote recognizing apparatus illustrated in FIG. 1.

8 is a flow chart for determining the authenticity of banknotes by detecting the negatives printed on the banknotes.

9 is a flowchart for determining the authenticity of banknotes by an ultraviolet sensor.

10 is a flowchart for determining the authenticity of banknotes by an infrared sensor.

11 is a flowchart for determining the authenticity of banknotes by the optical phase difference sensor.

FIG. 12 is a view schematically showing a state in which light is reflected from pneumococcal and counterfeit bills upon irradiation of light by the optical phase difference sensor in the flowchart shown in FIG. 11;

FIG. 13 is a diagram for explaining respective states in which bills can be inserted into a bill recognition device. FIG.

14 is a flow chart of a subroutine according to the response of the magnetic sensor of FIG.

15 is a flow chart of the subscript processing routine

16 is a flow chart of the Bank of Korea processing routine.

17 is a flowchart of a barcode processing routine.

<Explanation of symbols for main parts of drawing>

1: bill recognition device 2: upper portion

3: lower part 4: UV lamp

5: idle roller 6: step motor

7: helical gear 9: gear

10: driving pulley 11: timing belt

12; Banknote Insert 13: Banknote Exit

14a, 14b: motor drive sensor 15: amplifier

16: main processor unit 17: display

18: porter interrupter 19a, 19b: bill detection sensor

20: optical phase difference sensor 21: infrared sensor

22: acoustic sensor

An object as described above includes: a step motor which generates an encoder pulse according to rotation and is provided with a porter interrupt for outputting the encoder pulse; A motor driving sensor for inputting a signal for driving the motor; A sensor located at a distance from the motor drive sensor and provided to count the number of encoder pulses since a bill is detected; A plurality of magnetic sensors arranged in a direction orthogonal to the conveying direction of the bills to detect the bill portion printed with the ink containing the iron component, and arranged side by side with the magnetic sensor, to check the geology of the bills A plurality of infrared sensors for irradiating infrared rays to the light; An optical phase difference sensor for detecting a phase difference of light reflected from the banknote by irradiating light with the banknote; It has an amplifier for measuring the distance to each part of the bill and the size of the bill according to the number of pulses input from the step motor, and amplifies the signal input from the sensor, and the value and reference value detected by the sensors In comparison, it can be achieved by the banknote recognizing apparatus according to an aspect of the present invention, comprising a main processor unit for determining the authenticity of the banknote, and a display for displaying the inspection status.

The object as described above also includes the steps of sensing the bill and counting and storing the number of encoder pulses generated from this time point; Investigating the geology of banknotes by irradiating the infrared rays with infrared rays, determining whether they respond to the magnetic response according to each position on the banknote, and determining whether the detected position is located at a set distance when reacting. Determining whether or not pneumoconiosis; Irradiating ultraviolet rays to the banknote, comparing the amount of ultraviolet rays reflected by the banknote with a reference value to determine the lipid of the banknote; A method of recognizing a bill according to still another aspect of the present invention, comprising the step of determining the surface state of the bill by comparing the phase difference of the light with a reference value by irradiating light to the bill and receiving the reflected light. Can be achieved.

In the above, the step of determining whether the winding and the pneumoconiosis comprises the steps of detecting the subscripts printed on the bill, and determining the number of subscripts, the distance between the subscripts and the position of the subscripts by comparing with a reference value; Detecting the barcode printed on the bill, and determining the distance between the barcode bars and the position of the barcode with a reference value; Sensing a plurality of characters printed at the center of the bill, and comparing the distance between the characters and the position of the characters with a reference value to determine the characters; In the step, when one of the subscripts, characters and barcodes is not detected, determining that the counterfeit bill.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a side cross-sectional view schematically showing a banknote recognition device according to the present invention, Figure 3 is a view schematically showing the upper portion of the bill recognition device shown in Figure 2, Figure 4 is a bill shown in Figure 2 The lower part of the recognition device is shown schematically.

As shown in Figs. 2 to 4, the banknote recognizing apparatus 1 according to the present invention comprises an upper part 2 and a lower part 3, the upper part 2 for conveying the examined banknotes. A plurality of idle rollers 5, an ultraviolet lamp 4 (see FIG. 2) for irradiating ultraviolet rays to the lower portion 3 and a plurality of light receiving sensors are provided. The lower portion 3 is provided with a step motor 6 for transporting the supplied banknotes, and is also located at a position corresponding to the plurality of light receiving sensors provided on the upper portion 2 and emitting a number of light toward the light receiving sensor. Luminescent sensors are provided.

As shown in FIG. 1, the step motor 6 is provided with a helical gear 7 in the shaft portion, and the helical gear 7 is a gear installed in the shaft 8 orthogonal to the axis of the step motor 6. Meshes with (9). The gear 9 conveys the timing belt 11 provided in the drive pulley 10 by the rotation of the step motor 6 in the conveyance direction of a banknote. The plurality of idle rollers 5 provided in the upper part 2 are respectively in contact with the timing belt 11, and are rotated by the timing belt 11 while the timing belt 11 is being conveyed.

On the other hand, one side of the banknote recognition device 1 is provided with a banknote inlet 12, a banknote outlet 13 is provided on the opposite side of the banknote inlet 12 is discharged banknotes completed. Therefore, while the paper money inserted into the paper money inlet 12 is transferred from the paper money inlet 12 to the paper money outlet 13 by the timing belt 11 and the idle roller 5 which are transferred by the drive of the step motor 6. Whether the pneumoconiosis is checked by a plurality of sensors, and when the inspection is completed, it is discharged to the outside through the banknote discharge port (13).

When a banknote is inserted into the banknote recognizing apparatus 1 through the banknote inlet 12, the banknote is paired by the user in the upper part 2 and the lower part 3, respectively, a pair of motor drive sensors 14a and 14b. The input of bills is sensed by). The banknote position detecting sensor 14a provided in the upper part 2 emits light from the sensor 14b provided in the lower part 3, and the sensor 14b receives the light emitted from the sensor 14a. When the light emitted from the sensor 14a is blocked by the inserted bill, it is sensed that the bill is inserted into the bill recognition device 1. Since the signal sensed by the sensors 14a and 14b has a small amplitude, it is supplied to the amplifier 15 as shown in FIG. 5, amplified by the amplifier 15, and input to the main processor unit 16 (MPU).

The main processor unit 16 outputs a drive signal to the main processor unit 16 to drive the stepper motor 6 in accordance with the signals of the sensors 14a and 14b, and the stepper motor 6 is connected to the main processor unit 16. The bill is driven to transfer the bill to the bill recognition position. The banknotes put into the banknote recognizing apparatus 1 are conveyed by the step motor 6 by a predetermined distance at a time, for example, by 0.2 mm.

The banknotes are transferred to the positions of the sensors 19a and 19b by the driving of the step motor 6, and when the banknotes are detected by the sensors 19a and 19b, the banknotes begin to measure the length of the rear end portion of the banknotes from the leading end. do. The sensor 19a irradiates infrared rays with the light receiving sensor 19b provided in the lower part 3 to detect the tip of the banknote. The infrared rays irradiated from the sensor 19a to the sensor 19b are received by the sensor 19b in a state in which the radiation amount transmitted by the banknote is weakened, and a signal according to the difference in the transmission amount is transmitted through the main processor unit 15 through the amplifier 15. It is inputted by (16). In accordance with the signal input to the main processor unit 16, a check on the lipid of the bill is performed.

That is, since an image printed by a copying machine or a printer is printed by pressing or spraying toner or ink on copy paper, the image printed on the copy paper has an infrared ray transmissive amount for the entire bill than the image printed by the typesetting machine for typesetting waste paper. Since the thickness is printed thickly, the infrared transmission amount is smaller than the transmission amount passing through the dust cover than the image printed by the copier and the print, thereby determining the authenticity of the banknote.

On the other hand, at the rear of the sensor 19b, at least three magnetic sensors MR1, MR2, and MR3 are positioned in series so as to be orthogonal to the moving direction of the bill as shown in FIG. 3, and such magnetic sensors MR1, MR2, and MR3. ) Detects when a subscript 107 printed on a bill with iron ink containing iron components, a letter 108 and a barcode 105 printed on the central part of the bill pass, respectively, and passes through the main processor unit. 16 determines the authenticity of the bill according to whether a change in the magnetic field occurs when the portions 105, 107 and 108 pass through the magnetic sensors MR1, MR2 and MR3, while the number, size and distance of the detected subscripts are detected. It is judged that the paper type of a banknote is determined.

Behind the magnetic sensors MR1, MR2 and MR3, a plurality of infrared sensors 21a to 21e are arranged side by side with the magnetic sensors MR1, MR2 and MR3, and these infrared sensors 21a to 21e are used as a whole of the bill. While measuring the thickness, it is used to determine the authenticity of the negatives provided in the bill. In other words, the negatives provided to the bills are drawn using the difference in the thickness of the lipids. In case of pneumonia, each part has a slight difference in thickness, but in the case of the copied counterfeit money, such negative data is not generated. . At this time, if the measured value is about 70% of the reference value, it is determined that it is dust.

Banknotes passing through the infrared sensors 21a to 21e are arranged in parallel with the infrared sensors 21a to 21e, and the plurality of optical phase difference sensors 20, blue sensitive sensors 22, and ultraviolet lamps 4 are arranged side by side. Pass). The optical phase difference sensor 20 is used to determine the authenticity of the banknote by detecting the phase difference of the light reflected from the banknote by irradiating light to the banknote, as shown in Figure 12, the acoustic sensor 22 is an ultraviolet lamp Ultraviolet rays irradiated with the banknote from (4) are used to receive the ultraviolet rays reflected from the banknote and determine the amount of ultraviolet rays received to determine whether the banknote is abolished. That is, since copy paper used for printing or copying is bleached during manufacturing, it has a property of reflecting a greater amount of light, unlike lipids used in manufacturing pneumoconiosis.

When the banknote starts to be discharged from the banknote recognition device 1, the banknote is released from the motor drive sensors 14a and 14b, and the motor drive sensors 14a and 14b do not send a detection signal to the main processor unit 16, The step motor 6 stops driving.

An operation method for the banknote recognizing apparatus according to the present invention having the structure as described above will be described in more detail with reference to the drawings.

Figure 6 is a flow chart for determining the authenticity of the bill by measuring the length of the bill in the bill recognition apparatus according to the present invention.

First, when a bill enters the bill recognition device 1, the bill is detected by a pair of motor drive sensors 14a and 14b (S51), and the step motor 6 is operated by the operation of the sensors 14a and 14b. Is driven (S52). The step motor 6 is moved at a constant speed, and the banknote is moved to the sensors 19a and 19b by the driving of the step motor 6, and is detected by the sensors 19a and 19b (S53), and the bill is stepped. One pulse is generated every time the motor 6 moves by 0.2 mm, and the number of encoder pulses is input to the main processor unit 16 by the port interrupter 18 installed in the step motor 6, and the main processor It is stored in the memory in the unit 16. When bills are detected by the sensors 19a and 19b, the number of encoder pulses generated in the step motor 6 is counted so that the length of the bills can be measured. In step S53, if a bill is not detected for a suitable time, it is treated as an error.

The bills are detected by the sensors 19a and 19b, so that the length L of the bills is detected (S54), and the length L of these bills is determined by the distance between the sensors 14a and 14b and the sensors 19a and 19b. L1) is equal to 1 plus the number of encoder pulses counted for the banknote wear. That is, the length L of bills is measured by the number of encoder pulses generated by the operation of the step motor 6 which is operated in accordance with the detection of the bills by the sensors 14a and 14b at a preset distance L1.

When the bill is completely out of the positions of the sensors 19a and 19b, the sensors 19a and 19b are deactivated (S55), and when the length L of the measured bill is placed between 160 and 164 mm, 10,000 won bills If it is determined to be (S56), if it is not in the range of 153 to 157 mm, it is determined to be 5,000 won (S57), and if it is in the range of 149 to 152 mm, it is determined to be 1,000 won (S58). In the step, it is determined that the recognized bill is a counterfeit bill if it is not within the above range (S59).

This is because in the current domestic bills, the length of 10,000 won bills is approximately 162 mm, the length of 5,000 won bills is approximately 155 mm, and the length of 1,000 won bills is approximately 151 mm. In addition, it can recognize whether the bill is wrapped or closed.

FIG. 7 is a flow chart for determining a paper type classification of a banknote using a magnetic sensor installed in the banknote recognizing apparatus illustrated in FIG. 1.

As shown in FIG. 7, when the bill is detected by the sensors 19a and 19b by the step motor 6 (S61), the bill for the transfer distance of the bill is shown in FIG. 7, as shown in FIG. 7. Subscript 107, character 108, which is printed with iron-containing ink by three magnetic sensors MR1, MR2, and MR3 located at the rear of 19b) and disposed in a direction orthogonal to the conveying direction of banknotes And the bar code 105 is detected, it is detected whether the paper currency and puffing of the bill.

Meanwhile, as shown in FIG. 13, the banknote can be inserted into the banknote recognizing apparatus 1 in four directions, and the method of recognizing the banknote varies depending on the direction of inserting the banknote.

That is, when the banknote is inserted into the banknote recognition device 1 in the α2 direction, the bills passing through the sensors 19a and 19b are subscripted by the first magnetic sensor MR1 or the third magnetic sensor MR3. It is detected (S62). When the subscript 107 is detected by the first magnetic sensor MR1, in step S100, it is compared whether the detected value belongs to the reference value. At this time, if the detected value does not belong to the reference value, it is determined as a counterfeit bill. (S101) When the detected value belongs to the reference value, the main processor unit 16 executes a subscript processing routine of the banknote put in the? 2 direction (S63). If the subscript 107 is not detected by the first magnetic sensor MR1, the subscript 107 is detected by the third magnetic sensor MR3 (S64), and the detected value of step S100 shown in FIG. When the value detected by performing comparison of the reference values falls within the reference value, the subscript processing routine of the banknotes put in the α1 direction is executed (S65).

The subscript processing routine compares whether or not the diameter φ of the subscript 107 is larger than 3.5 mm as shown in FIG. 15 (S631). The subscript printed on banknotes currently used in Korea is approximately 3.25 to 3.5 mm, and the measurement of the diameter φ of the subscript 107 is based on the distance at which the bill is transported during the time when the magnetic sensor detects the subscript 107. It can be calculated by counting the number of encoder pulses for. In step S631, if the diameter? Of the subscript 107 is not larger than 3.5 mm, step S631 is continuously executed, and if small, the length counting after the subscript 107 measurement is cleared (S632).

It is determined whether or not the first magnetic sensor MR1, the third magnetic sensor MR3 in the case of the subscript processing routine according to the steps S65, is reacted by the subscript 107 (S633), and the first or third magnetic sensor If (MR1 or MR3) does not react, the banknote is determined to be 1,000 won. However, when the first or third magnetic sensor MR1 or MR3 is reacted, it is determined that the distance l1 to which the banknotes are transferred during the reaction again is applied to 1 to 2 mm (S634), and the distance l1 is determined. In the case of falling in the above-described range, the bill is judged as 10,000 won. However, when the distance L1 is in the range of 4 to 5 mm, the recognized bill is determined as 5,000 won, otherwise it is determined as 1,000 won. If the rolled paper using the subscript 107 is determined, the process proceeds to step S67, which will be described later, as shown in FIG.

For reference, the diameter and distance of subscripts for 1,000 won, 5,000 won, and 10,000 won bills currently used in Korea are as follows. In the case of a 1,000-won note, there is one subscript, the position of which is located approximately 95 mm from one side of the bill, and its diameter is approximately 3.5 mm. Also, in the case of the 5,000-won note, there are two subscripts, the position of which is approximately 8.5 mm from one side of the banknote, the diameter thereof is 3.3 mm, and the distance between the subscripts is 4.5 mm. Finally, for the 10,000 won note, the number of subscripts is three, the diameter is 3.5 mm, and the distance between the subscripts is 1.9 mm.

Referring back to FIG. 7, when the third magnetic sensor MR3 does not react in step S64, it is determined whether the moving distance l2 of the banknote is larger or smaller than the reference value R1 (S66), and the distance l2. If is smaller than the reference value R1, the subscript 107 is regarded as not moved to the magnetic sensors MR1, MR2, and MR3, and the process returns to step S62. R1 is the distance between the sensors 14a and 14b and the sensors 19a and 19b and the minimum distance between the edge of the banknote and the subscript 107 when it is introduced in the α direction (ie the direction in which the subscript 107 is located) (the As can be seen from the case of 5,000 won right is the smallest).

When the distance l2 is larger than the reference value R1, it is compared whether the distance l3 continuously moved is larger or smaller than the second reference value R2 (S67), and the distance l3 is larger than the second reference value R2. It is continuously compared until it is large, and when the distance l3 is larger than the second reference value R2, the process proceeds to step S68. Here, the distance l2 is the minimum distance that the character 108 can be sensed by the second magnetic sensor MR2 when it is put in the α direction.

In operation S68, it is determined whether the character 108 is detected by the second magnetic sensor MR2. At this time, when the character 108 is detected, the detected value of the operation S100 is compared with the reference value. If the value belongs to the reference value, the flow advances to step S69 to execute the BOK processing routine when it is injected in the? 1, 2 direction.

The BOK processing routine is shown in FIG. 16, and as shown in FIG. 16, when the character 108 is detected by the second magnetic sensor MR2 in step S69, the moving distance L2 of the banknote is determined by the reference value ( The banknotes are transferred until larger than H) (S691). Here, the distance L2 is a moving distance of the bill from when the letter 108 is detected by the second magnetic sensor MR2, and the reference value H is a size of one letter plus the distance between letters. Value. For example, the size of a letter and the distance between letters is approximately 7 mm.

In step S691, after the banknote is transferred by a predetermined value, it is determined whether the next character 108 is detected by the second magnetic sensor MR2 (S692). In step S692, when the second magnetic sensor MR2 reacts, the process proceeds to step S693 to store a value obtained by adding 1 to the number of times detected, and when the reaction does not respond, the moving distance L3 of the banknote is greater than the reference value H1. It is determined whether it is large (S694). In step S693, adding 1 to the number of detection takes into account the number of reactions in step S68 of FIG. In step S694, the bill is sensed and the letters 108 are continuously moved and moved until the moving distance L3 is greater than the reference value H1, and the above steps are performed. Here, the reference value H1 is the distance between the first letter, ie, "one" or "row", and the last letter, ie, "row" or "one", and the distance is approximately 30 mm. In step S694, when the overall detection of the character 108 is finished, proceeds to step S75 to be described later.

In step S68, when there is no reaction of the second magnetic sensor MR2, the banknote is put in the β direction shown in Fig. 13, the barcode 105 is the first magnetic sensor (MR1) or the first magnetic sensor (MR1) Is detected by the first magnetic sensor MR1 or the first magnetic sensor MR1 at S70 or S72, and at S70 or S72, the barcode 105 (that is, the bar 105a shown in FIG. 1) is detected. In operation S100, when the detected value is compared with the reference value, and the detected value belongs to the reference value, the bar code processing routine is executed in step S69 or S71.

The bar code processing routine is shown in FIG. 17, and stores the number of times the bar is detected (S701), and compares whether the distance L4 the bill is moved by more than the reference value B (S702), and the reference value (B). After the banknote is moved to detect the rod 105b, the process proceeds to step S75 which will be described later.

On the other hand, when the magnetic sensors MR1 and MR3 do not react in step S69 or S71, it is determined whether the moving distance l4 of the banknote has been moved by the reference value R3 or more (S74). R3 is the distance from the edge of the banknote to the barcode 105 when the banknote is put in the β direction, and the maximum distance thereof is approximately 60 mm. After the moving distance L4 of the banknote is moved by the reference value R3 or more, it is determined whether the second magnetic sensor MR2 reacts (S75), and when the second magnetic sensor MR2 reacts, steps S100 and S101 After the process of, the banknote is a case of pulverization, the bank of Korea banking routine of the banknotes put in the β1,2 direction is executed, and the bank of Korea banking routine is executed in the process of Figure 15 as described above (S76).

In the case where the second magnetic sensor MR2 does not react in step S75, this is a case where the banknote is put in the α direction, and the banknote continuously moves, and the moving distance l5 and the reference value R4 are compared (S77). If the movement distance l5 is less than or equal to the reference value R4, the process returns to step S75. If the movement distance l5 is less than or equal to the reference value R4, the barcode 105 is detected by the first or third magnetic sensor MR1 or MR3 (S78 or S80). In S78 or S80, when the barcode 105 (bar 105b of FIG. 1) is detected by the first or third magnetic sensor MR1 or MR3, after performing the process of steps S100 and S101, the banknote is When it is determined that it is occupied, in step S79 or S81, it ends after the barcode processing routine in the α1 or α2 direction is executed, and this barcode routine is the same as the barcode processing routine described above.

When the magnetic sensors MR1 and MR3 do not react in S78 and S80, the flow proceeds to step S82 to determine whether the moving distance ℓ6 of the bill has been moved by the reference value B1 or more, and this reference value B1 indicates that the bill is α. When inserted in the direction, the distance from the banknote edge on the side of the subscript 107 to the barcode 105 is set to about 97 mm. If it is determined in this step that the distance L6 has been moved by the reference value B1 or more, it is returned to step S78. Otherwise, in step S83, the moving distance L7 of the banknote is compared with the reference value B2, and the reference value B2. ) Is the distance from the banknote edge on the barcode 105 side to the subscript 107 when the banknote is put in the β direction and is approximately 137 mm. This comparison is continued until the moving distance ℓ7 of the banknote is moved beyond the reference value B2, and in steps S83 and S86, the subscript when the banknote is put in the β direction as the magnetic sensor MR1 or MR3 reacts. 107 is detected and ends after the subscript routine in the β1,2 direction is executed through the above-described process.

When the magnetic sensor MR1 or MR3 does not react in steps S83 and S86, it is compared whether the distance? 8 in which the bill is moved in step S87 is moved by more than the reference value B3, and the distance? 8 is compared with the reference value ( If the distance is smaller than B3), the process returns to step S83 and ends if the reference value B3 or more is moved. The reference value B3 is set to the size of the bill, that is, the length of the largest 10,000 won bill among the banknotes in use, and the size thereof is approximately 163 mm.

8 is a flow chart for determining the authenticity of banknotes by detecting the negatives printed on the banknotes. As described above, the negative portion 102 is irradiated with infrared rays from the plurality of infrared sensors 21a to 21e, and transmission and reflection values according to the irradiation of the infrared rays are stored (S81). The stored value is compared with the reference value (S82), and when the stored value is within the error range, it is determined to be a waste, and when it is out of the error range, it is determined to be a counterfeit money. At this time, the error range is about 70% of the reference value as described above.

FIG. 9 is a flow chart for determining the authenticity of banknotes by the ultraviolet sensor, and the value entered into the auditory sensor 22 when the ultraviolet rays irradiated from the ultraviolet lamp 4 are reflected from the banknote and enter the auditory sensor 22. Is read (S91). The read value is compared with the reference value (S92). At this time, it is determined that the reading value is closed when the reading value is smaller than the reference value, and when the reading value is larger, the counterfeit money.

10 is a flowchart for determining the authenticity of banknotes by the infrared sensor. As can be seen from Fig. 10, when the infrared transmission amount is larger than the reference transmission amount, it is determined that the lipid is thick, and it is determined as a counterfeit bill.

It is a flowchart which determines the authenticity of a banknote by an optical phase difference sensor. As shown in Fig. 11, when light is received by irradiating light from the surface of a banknote, when the measured phase difference of the light does not match the phase difference of the pneumoconiosis stored in the memory, it is determined that the position is different as shown in Fig. 12A. It is a counterfeit bill, and it is determined to be puffiness by matching the position as shown in Fig. 12B.

The test results as described above are displayed on the display 17 via the main processor unit 16.

In the above, the portion not indicated in FIG. 3 represents a light receiving or light emitting sensor corresponding to FIG. 4.

As described above, according to the banknote recognizing apparatus according to the present invention, it is possible to more accurately recognize whether the banknotes are bleeding through various types of inspection, and can recognize whether the banknotes are bleeding regardless of the winding type. In addition, according to the data generated during the inspection of bills, the paper type is accurately identified and displayed on the display.

Claims (5)

A stepper motor generating an encoder pulse according to rotation and having a porter interrupt for outputting the encoder pulse; A motor driving sensor for inputting a signal for driving the motor; A sensor located at a distance from the motor drive sensor and provided to count the number of encoder pulses since a bill is detected; A plurality of magnetic sensors arranged in a direction orthogonal to the conveying direction of the paper money, for detecting a portion of the paper money printed with an ink containing iron, A plurality of infrared sensors arranged side by side with the magnetic sensor and irradiating infrared rays to the paper money to inspect the geology of the paper money; An optical phase difference sensor for detecting a phase difference of light reflected from the banknote by irradiating light with the banknote; It has an amplifier for measuring the distance to each part of the bill and the size of the bill according to the number of pulses input from the step motor, and amplifies the signal input from the sensor, and the value and reference value detected by the sensors In comparison, the main processor unit for determining the authenticity of the bill; Banknote recognition apparatus comprising a display for displaying the inspection status. According to claim 1, In order to sense the state of the negative provided on the bill, an ultraviolet lamp for irradiating the ultraviolet light on the bill, and the amount of the ultraviolet light emitted from the ultraviolet lamp is reflected by the bill to receive the main processor Banknote recognition device further comprises an acoustic sensor for input to the unit. The bill recognition apparatus of claim 1, wherein the magnetic sensors are positioned at a position through which a subscript, a barcode, and a character printed at the center pass through the bills. Sensing the bill and counting and storing the number of encoder pulses generated from this time point; Irradiating the infrared rays to examine the lipids of the banknote according to the transmittance of the infrared rays, Determining whether to respond to the magnetic response according to each position on the banknote, and determining whether the sensed position is located at a set distance when reacting to determine whether the banknote is wrapped or closed; Irradiating ultraviolet rays to the banknote, comparing the amount of ultraviolet rays reflected by the banknote with a reference value to determine the lipid of the banknote; And a step of judging the surface state of the banknote by comparing the phase difference of the light with a reference value by irradiating the banknote with the light and receiving the reflected light. The method of claim 4, wherein the step of determining the swelling and pneumoconiosis, Detecting the subscript printed on the bill, and determining the number of subscripts, the distance between the subscripts, and the position of the subscripts by comparing them with a reference value; Detecting the barcode printed on the bill, and determining the distance between the barcode bars and the position of the barcode with a reference value; Sensing a plurality of characters printed at the center of the bill, and comparing the distance between the characters and the position of the characters with a reference value to determine the characters; In the step, the banknote recognition method comprising the step of determining that the counterfeit money when one of the subscripts, characters and barcodes is not detected.