KR101062315B1 - Apparatus for checking counterfeit bill and method thereof - Google Patents

Abstract

The present invention relates to a device having a counterfeit discrimination function and a counterfeit discrimination method, the apparatus having a counterfeit discrimination function according to the present invention comprises a main body formed with a bill insertion hole on one side; A conveying system for conveying a banknote inserted through the banknote inlet; A sensor unit disposed in a transport path of the banknote in a range corresponding to a width of the banknote inserted through the banknote inserting hole; A two-dimensional image generation unit receiving data from the sensor unit and generating a two-dimensional image; And a counterfeit discrimination unit configured to analyze the two-dimensional image to determine whether there is a counterfeit. Thus, by organizing the sensing data in two dimensions, it is possible to increase the accuracy and reliability of the counterfeit determination.

Description

Apparatus for checking counterfeit bill and method

The present invention relates to an apparatus having a counterfeit discrimination function and a counterfeit discrimination method, and more particularly, to a counterfeit discrimination apparatus having a counterfeit discrimination function, a bill counter, a bill sorter, an ATM device, and a counterfeit discrimination method applicable thereto.

Recently, counterfeit discrimination functions are being applied to banknote counters, banknote sorters and ATM machines.

And, in order to determine such forgery, a magnetic sensor or an ultraviolet (UV) sensor is generally provided.

In the case of using an ultraviolet sensor, it detects the counterfeit by irradiating ultraviolet rays on one side of the bill to be transported. Cotton paper is usually used as cotton paper, which differs in the amount of ultraviolet light absorption from other forged paper money. Accordingly, it is possible to detect whether the banknote is counterfeit through the ultraviolet sensor.

In the case of using a magnetic sensor (magnetic sensor), which is a magnetic ink detection sensor, the magnetic ink contained in the banknote is sensed to detect whether the banknote is counterfeit. However, such a conventional magnetic sensor has a high possibility of error recognition due to vibration or static electricity.

In addition, the conventional forgery detection method was determined whether or not forgery based on one-dimensional data over time. 1 is a graph illustrating a one-dimensional magnetic component of a banknote using a conventional magnetic sensor.

In the related art, since it is determined whether the counterfeit is made using one-dimensional data, the possibility of error recognition is large, and the influence of vibration or static electricity is greater.

Accordingly, an object of the present invention is to increase the accuracy and reliability of counterfeit determination by constructing the sensing data in two dimensions. In addition, the sensor unit is composed of a plurality of sensor channels, and the possibility of error recognition due to vibration or static electricity is eliminated by comparing and correcting data between adjacent channels.

The above object is a device having a counterfeit discrimination function, the main body is provided with a bill insertion hole on one side; A conveying system for conveying a banknote inserted through the banknote inlet; A sensor unit disposed in a transport path of the banknote in a range corresponding to a width of the banknote inserted through the banknote inserting hole; A two-dimensional image generation unit receiving data from the sensor unit and generating a two-dimensional image; And by analyzing the image can be achieved by the device having a gastric obstructive discrimination, characterized in that it comprises a gastric obstruction discriminating unit for determining the presence or absence of gastric obstruction.

In addition, the sensor unit may be formed in a multi-channel by arranging a plurality of magnetic sensors or a plurality of UV sensors in a row.

The apparatus having the counterfeit discrimination function may further include a data compensator for correcting the data of the channel when the data of each channel is compared with the data of the adjacent channel by a predetermined value or more.

In addition, the counterfeit discrimination unit pre-stores the data table of the reference banknote, it is possible to determine whether the counterfeit by comparing the two-dimensional image and the data table of the reference banknote.

On the other hand, according to the present invention, in the counterfeit discrimination method, forming a plurality of sensor channels by placing a plurality of sensors in a range corresponding to the width of the bill passing; Generating a two-dimensional image by receiving data from the plurality of sensors when a banknote is inserted; And it can also be achieved by the gastric pulmonary discrimination method comprising the step of analyzing the image to determine the presence or absence of gastric pulmonary.

Here, the counterfeit discrimination method may further include correcting the data of the channel when the data of each channel is compared with the data of the adjacent channel and the difference is more than a predetermined value.

As described above, according to the present invention, the accuracy and reliability of the counterfeit determination can be improved by constructing the sensing data in two dimensions. In addition, the sensor unit may be configured of a plurality of sensor channels, and the possibility of error recognition due to vibration or static electricity may be eliminated by comparing and correcting data between adjacent channels.

1 is a graph illustrating a one-dimensional magnetic component of a banknote using a conventional magnetic sensor.
Figure 2 shows an example of the inside of the main body of the apparatus having a forgery discrimination function according to the first embodiment of the present invention, Figure 3 shows a control block diagram of the apparatus of FIG.
FIG. 4 schematically illustrates a side of the sensor unit 30 including the magnetic sensor 31a and the magnetic brush roller 31b.
FIG. 5 illustrates a two-dimensional image generated by the input bank and the two-dimensional image generator 40 when the sensor unit 30 includes a plurality of magnetic sensors.
FIG. 6 illustrates a hardware interface corresponding to the 2D image generation unit 40, the counterfeit discrimination unit 50, and the data compensator 60 that receive and process sensor data from the sensor unit 30.
7 is a flowchart illustrating a counterfeit discrimination method according to an embodiment of the present invention.
FIG. 8 illustrates a two-dimensional image generated by the input bank and the two-dimensional image generator 40 when the sensor unit 30 is composed of a plurality of UV sensors.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

Figure 2 shows an example of the inside of the main body of the device having a forgery discrimination function according to an embodiment of the present invention, Figure 3 shows a control block diagram of the device of FIG.

2 and 3, the device having a counterfeit discrimination function according to the present embodiment is a banknote input 10, the transfer system 20, the sensor unit 30, the two-dimensional image generation unit 40 and the counterfeit discrimination The part 50 is provided.

When the bill is inserted into the bill input port 10, the transport system 20 senses the bill to be inserted and transports the bill to be discharged to the outlet along the transport path. The bill input slot side is composed of a lower drive roller and an upper idle roller for feeding bills, the lower drive roller is connected to the main motor and controlled by an encoder. When the bill is inserted, the insert sensor receives a signal and the sensor unit 30 operates.

The sensor unit 30 is disposed in the transfer path of the banknote in a range corresponding to the width of the banknote inserted through the banknote inserting hole.

The sensor unit 30 is formed in a multi-channel by arranging a plurality of magnetic sensors or a plurality of UV (ultraviolet) sensors in a row. In the present embodiment will be described as an example that the sensor unit 30 is composed of a plurality of magnetic sensors.

FIG. 4 schematically illustrates a side of the sensor unit 30 including the magnetic sensor 31a and the magnetic brush roller 31b. Although only one magnetic sensor 31a is shown in FIG. 4 because it is a side view, a plurality of magnetic sensors 31a are formed in a row so as to sense the whole bill width in the passage direction of the bill.

The 2D image generating unit 40 receives the sensor data obtained while passing the banknote from the sensor unit 30 and generates a 2D image according to time and position.

5 illustrates a two-dimensional image generated by the input bank and the two-dimensional image generating unit 40 when the sensor unit 30 is composed of a plurality of magnetic sensors 31. Referring to FIG. 5, the magnetic component over time and the position of the magnetic sensor are represented by two-dimensional data.

The gastric obstruction unit 50 analyzes the 2D image generated by the 2D image generating unit 40 to determine the presence or absence of gastric obstruction.

First, since the start and end of the banknote inserted through the insert sensor can be known, the counterfeit discrimination unit 50 can find the vertical position of the banknote in the two-dimensional image. In addition, the presence or absence of magnetic components at the corresponding position is determined to determine the gastric and pneumoconiosis. In more detail, by using a pre-stored magnetic data table for each kind of notes based on the vertical position information of the bill in the two-dimensional image to determine the winding type that is the best match, and determine the counterfeit. Of course, it is possible to generate and store the magnetic data table for each kind in two dimensions rather than in one dimension, in which case it is possible to more easily determine whether the kind and the counterfeit.

Referring to FIG. 1, the apparatus having the counterfeit discrimination function according to the present embodiment may further include a CMOS image sensor (CIS) 70.

In this case, since the paper type and position of the paper money can be known first through the CIS 70, the paper money position (the known magnetic field) in the magnetic two-dimensional image using the recognition information (paper money location and paper material information) found in the CIS image. The mechanical position of the channel and the CIS 70 and the sampling rate). In addition, by using a pre-stored magnetic data table for each kind of class, the presence or absence of the corresponding value is determined at the position where the magnetic component is present to discriminate counterfeit and pneumoconiosis.

Conventionally, one-dimensional data is used as shown in FIG. 1, but the present invention can improve sensory performance of pneumonia and atrophy by generating sensor data in two dimensions using magnetic data and position information of a magnetic sensor according to time of FIG. 5. have. In addition, since the 2D image is used, the user can easily determine the presence or absence of the magnetic component even with the naked eye.

On the other hand, the device having a counterfeit discrimination function according to the present embodiment may further include a data correction unit 60, as shown in FIG. The data compensator 60 is to remove an error of data of a multi-channel composed of a plurality of sensors. The data compensator 60 compares data of adjacent channels and removes a determination error that may be caused by vibration or static electricity.

For example, in consideration of the fact that the magnetic component is also detected in the adjacent channel, if the magnetic component is detected only in one of two consecutive channels compared to the data of the adjacent channels, the data of the corresponding channel is treated as an error.

For example, when the sensor unit includes a total of five channels, a magnetic component is detected in the third channel, but when it is detected that there is no magnetic component in the adjacent second and fourth channels, the data of the third channel is treated as an error. Correct that there is no.

As another example, if the magnetic component is detected in the third channel and the magnetic component is detected in the adjacent second channel, the data of the third and second channels are effectively processed regardless of the data of the fourth channel. That is, when a magnetic component is detected in a corresponding channel, if only one of the adjacent channels is detected in the same manner, the magnetic component is processed as valid data.

However, if the magnetic component is not detected in the channel, it is processed as valid data regardless of the data with the adjacent channel. That is, only when a magnetic component is detected in the corresponding channel, the data with the adjacent channel is compared to determine an error.

Thus, noise due to vibration or static electricity can be removed.

FIG. 6 illustrates a hardware interface corresponding to the 2D image generation unit 40, the counterfeit discrimination unit 50, and the data compensator 60 that receive and process sensor data from the sensor unit 30.

The 2D image generating unit 40, the counterfeit discrimination unit 50, and the data compensating unit 60 may be implemented by a software program and a processor and a memory in which the program is executed, and are included in the processor A ′ in FIG. 6. It can be understood that.

The data output from the sensor unit 30 is converted into a digital signal by the ADC 83 by the control of an analog / digital converter (ADC) controller 85 and output to the processor A '.

The processor A 'generates two-dimensional data by processing the multi-channel sensor data input from the ADC 83 and compares the magnetic data table pre-stored in the memory 81 to determine counterfeit. In addition, correction may be performed by comparing with data of an adjacent channel.

7 is a flowchart illustrating a counterfeit discrimination method according to an embodiment of the present invention.

First, a plurality of sensors are arranged in a line in the movement path of the bill to form a multi-channel (S10). When the banknote is inserted (S11), the sensor unit 30 is activated to output data from the sensor unit 30 as the banknote passes, and the two-dimensional image generating unit 40 accumulates the data to generate a two-dimensional image. (S13).

The data compensator 60 compares the data of the corresponding channel with the data of the adjacent channels and performs correction (S15).

The counterfeit discrimination unit 50 compares the previously stored data table, for example, each kind of magnetic data table, and determines whether the counterfeit or counterfeit is present (S17).

In the present embodiment, the accuracy of the magnetic field is determined in two dimensions rather than in the one dimension.

Hereinafter, as another embodiment of the present invention, an example in which the sensor unit 30 of the device having a forgery discrimination function is composed of a plurality of UV sensors will be described.

8 illustrates a two-dimensional image generated by the input bank and the two-dimensional image generating unit 40 when the sensor unit 30 is composed of a plurality of UV sensors 33.

Referring to FIG. 8, the UV reflection value and the transmission value are expressed in two dimensions by using the UV component and the position information of the UV sensor over time.

The counterfeit discrimination unit 50 finds the vertical position of the banknote by using the edge component in the 2D UV image. Then, judging the presence or absence of UV at the location to determine the counterfeit or by examining the amount of UV present to determine the loss of banknotes. As shown in FIG. 1, when the device having the counterfeit discrimination function includes the CIS 70 or the magnetic sensor together, the horizontal position of the banknote can be found through the CIS 70 or the magnetic sensor, and the previously stored volume type. Compare with the UV pattern to determine whether or not.

 According to this embodiment, the accuracy is high because it determines the presence of UV in two dimensions rather than determining the presence of UV in one dimension.

Although several embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various modifications may be made without departing from the principles and spirit of the invention . It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

10: Banknote input 20: Transfer system
30: sensor unit 40: 2D image generating unit
50: Counterfeit Division 60: Data Compensation
70: CMOS image sensor

Claims (6)

In the device having a gastric obstruction discrimination function,
A main body in which bill inserts are formed on one side;
A conveying system for conveying a banknote inserted through the banknote inlet;
A sensor unit disposed in a transport path of the banknote in a range corresponding to a width of the banknote inserted through the banknote inserting hole;
A two-dimensional image generation unit receiving sensor data from the sensor unit and generating the two-dimensional image according to time and position by using the position information of the sensor unit according to time; And
Apparatus having a gastric pulmonary discrimination function comprising a gastric pulmonary discrimination unit for analyzing the two-dimensional image to determine the presence of gastric pulmonary.
The method of claim 1,
The sensor unit has a forgery discrimination function, characterized in that a plurality of magnetic sensors or a plurality of UV sensors arranged in a row to form a multi-channel.
The method of claim 1,
The sensor unit is formed in a multi-channel by arranging a plurality of magnetic sensors,
The apparatus having the counterfeit discrimination function detects an error of data of a channel in which a magnetic component is detected and performs correction. When the magnetic component is not detected in all adjacent channels of the corresponding channel in which the magnetic component is detected, And a data compensator for processing data of the channel as an error.
The method according to claim 2 or 3,
The counterfeit discrimination unit pre-stores the data table of the reference banknote, and comparing the two-dimensional image and the data table of the reference banknote device having a counterfeit discrimination, characterized in that for determining the presence of counterfeit.
In the forgery discrimination method,
Arranging a plurality of sensors in a range corresponding to the banknote passage width to form a multi-channel;
Receiving a bill data into the sensor data from the plurality of sensors, and generating the two-dimensional image according to time and position by using the sensor position information of the sensor data according to time; And
And analyzing the two-dimensional image to determine whether or not gastric obstruction is detected.
The method of claim 5,
The plurality of sensors includes a plurality of magnetic sensors,
The counterfeit discrimination method may be performed by detecting whether or not an error of data of a channel where a magnetic component is detected is performed. When the magnetic component is not detected in all adjacent channels of the corresponding channel where the magnetic component is detected, the corresponding channel is detected. The forgery discrimination method further comprises the step of processing the data of the error.

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