KR101056949B1 - Tape winding detection device using capacitive sensor and its operation method - Google Patents

Abstract

The present invention relates to a tape winding detection apparatus and a tape winding detection method using a capacitive sensor, and has a predetermined dielectric constant between a periodic wave transmitting conductor plate and a periodic wave receiving conductor plate, and provides a periodic wave signal between two conductor plates. A capacitive sensor for transmitting and receiving, a frequency generating unit for generating a periodic wave signal having a periodic signal, an amplifying unit for amplifying a signal received through the periodic wave receiving conductor plate, and receiving an amplified signal through the amplifying unit A periodic signal generated by the frequency generator through the periodic wave transmitting conductor plate when a bill is transferred between the signal processor and the periodic wave receiving conductor plate and the periodic wave receiving conductor plate Emits a signal, and the threshold value preset by the signal received through the periodic wave receiving conductor plate, the amplifier and the signal processor For out above, a control unit to determine bill currently being passed to a tape volume.

Automatic teller machine, banknote, securities, tape, capacitive sensor, square wave, dielectric constant

Description

Apparatus for detecting tape-paste banknote using capacitive sensor and method for operating the same}

The present invention relates to a tape winding detection device and a tape winding detection method using a capacitive sensor.

If the banknote is damaged, it is used to keep the original using tape to maintain the original. However, these taped bills (hereinafter referred to as 'tape notes') can cause errors in automated financial teller machines or prevent the machine from operating properly. Therefore, in financial institutions or where a large amount of cash is collected, devices for detecting tape tickets have been used to sort and discard such tape tickets.

However, most of the tape winding detection structures used in conventional financial offices are mechanical structures. However, such a mechanical structure has a problem that it is difficult to carry out high-accuracy detection in the automated teller machine that requires a high processing speed.

1 is a perspective view schematically showing a tape winding detection structure according to the prior art.

As shown in Fig. 1, the tape winding detection structure according to the prior art has a structure for detecting a mechanical change, and therefore, a detection method is also employed as a detection method by converting the mechanical change into an electrical signal. Specifically, the banknote passes through the fixed roller 11 and the flow roller 10 installed in a position facing each other is introduced along the bill transfer direction. Then, the flow roller 10 moves in the direction orthogonal to the banknote conveyance direction by the thickness of the banknote conveyed.

As the moving distance of the flow roller 10 in the direction orthogonal to the banknote conveying direction changes, the moving bar 12 moves about the hinge 13 and the sensing bar 14 rotates. The detection sensor 15 detects the moving distance of the flow roller 10 as the sensing bar 14 rotates.

In the above, the moving distance of the flow roller 10 is corresponded to the thickness of the banknote conveyed. Therefore, when the taped portion passes between the rollers, the moving distance of the flow roller 10 increases. That is, an increased moving distance is calculated on the basis of the detected moving distance when a normal banknote passes between the rollers, and time-dividing the signal thus calculated is used to detect the length of the taped portion.

As described above, as the tape winding detection method of the automatic teller machine, the detection method through the above-described mechanical structure has been most commonly used. However, in such a detection method, when the banknote is crumpled or the like, there is a fear that the moving distance of the roller is increased and the tape is detected even though the banknote is a normal banknote.

In addition, in the case of using in an environment where there is a lot of moisture and poor management of paper money, the longer the paper money is used, the thicker the paper money tends to be. There is concern.

Moreover, in banknotes issued recently, such as the euro currency, the anti-counterfeiting silver wire is often used over a large area. In such a case, since the thickness of the hidden line portion is thicker than the thickness of other portions, it is difficult to detect even if the tape is attached to a portion other than the hidden line. Even in the case of a normal banknote, since the hidden line portion may affect the movement distance of the flow roller, the detection may be erroneously detected by the tape winding. Therefore, the detection performance of the tape winding decreases.

In addition, in the case of the detection method of the tape winding using the ultrasonic wave (Domestic Publication No. 10-2008-0094426), it is difficult to commercialize the product due to the sensitivity of the ultrasonic sensor is sensitive and vulnerable to humidity.

An object of the present invention is to provide a tape winding detecting device and a detection method with higher accuracy by using a capacitance sensor based on the dielectric constant of a material existing between two conductor plates.

The present invention has a predetermined dielectric constant between a periodic wave transmitting conductor plate and a periodic wave receiving conductor plate and generates a periodic wave signal having a periodic sensor and a capacitive sensor for transmitting and receiving a periodic wave signal between two conductor plates. A frequency generating unit, an amplifying unit for amplifying a signal received through the periodic wave receiving conductor plate, a signal processing unit for arranging the signals amplified through the amplifying unit in order of receiving and converting the A / D, and transmitting the periodic wave When the banknote is transferred between the conductor plate and the periodic wave receiving conductor plate, the periodic wave signal generated by the frequency generating unit is radiated through the periodic wave transmitting conductor plate, wherein the periodic wave receiving conductor plate and the amplifying unit and the signal are emitted. If the signal received via the processing unit is out of the preset threshold range, and includes a control unit for determining the current bill passing through the tape winding do.

If the received signal is within the threshold range, the control unit judges the bill passing through the two conductor plates of the capacitive sensor as a normal bill and transfers it to the stacking pocket, while the received signal is at the threshold value. If it is out of range, the bill passing through the two conductor plates of the capacitive sensor is judged as a tape winding and transferred to the reject pocket.

According to the present invention, a bill transfer is made in a sheet form along a bill transfer path, and the bill is determined whether the bill is authentic or not, and when the bill is determined, the bill is transferred between the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate of the capacitive sensor. And a process in which the periodic wave receiving conductor plate receives a signal radiated through the periodic wave transmitting conductor plate, and when the received signal is out of a preset threshold range, the banknote currently being passed through the tape roll. The process of determining.

According to the present invention, by detecting a tape winding using a capacitive sensor, it is possible to accurately and efficiently detect whether or not a tape is attached to a bill in the form of a security in a financial teller machine.

Hereinafter, a detailed description of embodiments of the present invention will be described with reference to the accompanying drawings. In the following description of the reference numerals to the components of the drawings it should be noted that the same reference numerals as possible even if displayed on different drawings.

2 is a block diagram of a tape winding detection apparatus using a capacitive sensor according to an embodiment of the present invention.

In the following description, the term “banknote” refers to a securities in the form of a banknote having a value of money, and includes a concept of all securities such as cash, check, and bill.

Hereinafter, the periodic wave refers to a frequency signal having a constant period, and refers to a waveform having a periodic signal such as a square wave, a triangle wave, a pulse wave, or the like. Hereinafter, although a square wave will be described as an example of a periodic wave, in addition to the square wave described below, all frequency waveforms having periodic signals such as triangular waves and pulse waves may be applied.

The banknote conveying path is a banknote conveying path through which the inserted banknotes are conveyed, and passes through the banknote conveying path when a sheet of bills is continuously fed at a high speed.

The capacitive sensor 30 is present at a predetermined point of the bill transfer path, and transmits and receives a square wave signal between two conductor plates. That is, the periodic wave transmitting conductor plate 31 and the periodic wave receiving conductor plate 32 are positioned at the upper and lower portions of the bill transfer path, and the capacitive sensor 30 having a dielectric constant due to a dielectric such as air is present in the middle thereof. It exists, and transmits and receives a square wave signal between the two conductor plates when the bill passes between the two conductor plates (31, 32).

In general, the capacitive sensor is a non-contact sensor that outputs a detection signal when the object to be detected is close to the detection surface (between two electrode plates), and the frequency oscillation type proximity sensor is caused by the electromagnetic induction and capacitance change caused by the detection object. Etc.

The present invention utilizes the property of changing the capacitance (capacitance value) formed between the two conductor plates 31 and 32 by the dielectric constant of the dielectric present between the two conductor plates of the capacitive sensor 30. The change is detected to detect a bad roll of tape.

That is, after the frequency signal is transmitted between the periodic wave transmitting conductor plate 31 and the periodic wave receiving conductor plate 32 through which the bill passes, the signal that is changed by the capacitance (capacitance value) is received and passed. Determines whether is a normal bill or tape.

In general, a capacitance sensor generates a capacitance C according to a dielectric constant ε between electrode plates having conductivity, and a frequency signal transmitted and received between two conductor plates changes according to the change of the capacitance C.

For reference, when C is the capacitance, ε is the dielectric constant, A is the area of the conductor plate, and d is the distance between the two conductor plates, and the capacitance between the two conductor plates is as follows.

[Equation 1]

As shown in [Equation 1], since the capacitance varies variably according to the change of the dielectric constant ε between two conductor plates, the frequency signal transmitted from the upper conductor plate and received by the lower conductor plate is affected by the capacitance. The signal waveform will change.

For example, the capacitance between the two conductor plates is an empty space, and the capacitance due to the dielectric constant (ε) when air is different, and the capacitance due to the dielectric constant when a tape or the like is placed between the two conductor plates is different. Will be different.

Therefore, the present invention utilizes this characteristic to allow the normal banknote to pass through when the normal banknote passes through the two conductor plates and the normal banknote to pass through due to the dielectric constant changed by the tape attached to the tape winding. Since the capacitances are different from each other, the tape winding is detected using this characteristic.

FIG. 3 is a diagram showing the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate, and FIG. 3 (a) shows the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate respectively formed by one electrode plate. 3 (b) is a diagram showing a transmitting conductor plate formed of one electrode plate and a periodic wave receiving conductor plate in an array form.

The periodic wave transmitting conductor plate 31 and the periodic wave receiving conductor plate 32 are placed at positions facing each other in the direction orthogonal to the conveying direction in the banknote conveying path.

The distance between the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate has a distance d through which the banknote 33 can pass, and preferably has a distance of 1.5 mm to 30 mm.

The periodic wave transmitting conductor plate 31 is composed of one electrode plate, and a predetermined frequency signal generated by the frequency generating unit is radiated toward the periodic wave receiving conductor plate 32 through the periodic wave transmitting conductor plate 31. . In order to transmit the frequency in the direction of the periodic wave receiving conductor plate, the shape and the directionality of the periodic wave transmitting conductor plate may be variously formed.

The frequency signal generated by the frequency generator has a square wave shape, and has a constant square wave frequency in a frequency band of 100 KHz to 500 KHz (preferably 280 KHz to 350 KHz).

The periodic wave receiving conductor plate 32 may be formed integrally with one electrode plate in the same form as the periodic wave transmitting conductor plate 31 as shown in FIG.

As another embodiment, as shown in FIG. 3B, in the periodic wave receiving conductor plate 32, a plurality of receiving conductor plate units 32a, 32b, and 32n may be formed in an array form. That is, the periodic wave receiving conductor plate is composed of a plurality of receiving conductor plate units 32a, 32b, and 32n, and each receiving conductor plate unit is spaced at a predetermined interval (preferably between the centers of the respective receiving conductor plate units Spaced 3 mm to 50 mm) on the circuit board 34 (PCB) in the form of an array.

Each receiving conductor plate unit is placed in the form of an array, and scans the horizontal axis (or vertical axis) of the banknote when the banknote passes, and receives the frequency signal transmitted from the periodic wave transmitting conductor plate.

Although the shape of each of the receiving conductor plate units 32a, 32b, and 32n is illustrated as a rectangle, the receiving conductor plate units 32a, 32b, and 32n may be designed in various forms such as square, triangle, parallelogram, etc. in addition to the rectangle. Preferably it has a parallelogram shape.

Meanwhile, the periodic wave transmitting conductor plate 31 and the periodic wave receiving conductor plate 32 of the capacitive sensor 30 are placed at positions facing each other in a direction orthogonal to the conveying direction in the bill transfer path. This banknote transfer state is shown.

4, the long side of the banknote 33 passes between the periodic wave transmitting conductor plate 31 and the periodic wave receiving conductor plate 32, and passes the banknote by the banknote receiving conductor plate formed of an array. The frequency can be received. On the other hand, in FIG. 4, although the conveyance direction of the banknote 33 became the horizontal transverse direction, it may be sufficient that the conveyance direction of a banknote becomes the longitudinal longitudinal direction.

Meanwhile, FIG. 5 is a graph showing a signal received when a banknote passes between the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate, and FIG. 5 (a) is transmitted through the periodic wave transmitting conductor plate 31. It is a graph which shows the frequency of a square wave form, and FIG. 5 (b) is a graph which shows the signal received by the periodic wave receiving conductor board 32. As shown in FIG. When the space between the two conductor plates is empty, it can be seen that the waveform of the signal received at the periodic wave receiving conductor plate is changed by the air dielectric constant between the two conductor plates.

On the other hand, the remaining structural blocks of the tape winding detector other than the transmission frequency conductor plate and the reception frequency conductor plate will be described.

The frequency generator 40 generates a square wave frequency signal, and generates a constant square wave frequency in a frequency band of 100 KHz to 500 KHz (preferably 280 KHz to 350 KHz).

The amplifier 60 functions to amplify the received signal to smoothly detect the signal received through the periodic wave receiving conductor plate.

The signal processor 50 processes a plurality of amplified signals for each received time difference (aligns the received signals in order), and converts the processed signals into digital signals through an A / D converter.

The control unit 20 analyzes the signal coming through the signal processing unit 50, and when the signal has a signal value out of the preset threshold range, determines that the bill sent when the signal comes in as a tape winding.

That is, when the bill is transferred between the periodic wave transmitting conductor plate 31 and the periodic wave receiving conductor plate 32 of the capacitive sensor 30, the frequency generating unit generates the bills through the periodic wave transmitting conductor plate 31. Radiating a square wave signal, and when the signal received through the periodic wave receiving conductor plate 32 and the amplifying unit 60 and the signal processing unit 50 is outside the preset threshold range, A banknote is judged by a tape ticket.

When the tape winding passes between the periodic wave transmitting conductor plate 31 and the periodic wave receiving conductor plate 32 of the capacitive sensor 30, the dielectric constant between the two conductor plates is changed by the tape attached to the bill. This results in a change in the signal received when the tape passes as compared to when a normal banknote passes. The control unit 20 determines the tape winding when such a received signal is out of a preset threshold range.

For reference, a description will be given with reference to FIG. 6 in which a received signal is amplified, signal processed, and digitized. In Fig. 6, the signal 61 is a signal obtained by digitally converting and receiving the received signal obtained when the tape rolled tape passes, and the signal 62 is a digital signal of the received signal obtained when the normal banknote without tape is passed. Assume that the signal is converted and output. The weakly marked section with a strength of 50 or less is the section without bills.

When the bill passes, the dielectric constant between the two conductor plates changes due to the passage of the paper bill, so that a signal such as 62 is detected. If the tape roll passes between the two conductor plates, the result is that the tape exists between the two conductor plates in addition to the bills, and the dielectric constant changes as compared with the normal bills without the tape passing. The signal is detected.

When the signal received at the time of passing the tape has a waveform change as indicated by reference numeral 61 of FIG. 6 through the converting process by the signal processing unit, the controller 20 receives the corresponding banknote because the received signal is larger than the preset threshold range. We distinguish by tape winding.

Therefore, when the received signal is within the threshold range, the control unit 20 determines the bill passing through the two conductor plates of the capacitive sensor as a normal bill and transfers it to the stacking pocket 90, while receiving If the signal is out of the threshold range, the bill passing through the two conductor plates of the capacitive sensor is determined as a tape winding and transferred to the reject pocket 80.

For example, when a waveform of symbol 62 is detected, the banknote currently passed is determined as a normal banknote, and the banknote is transferred to the stacking pocket 90. On the other hand, when a waveform out of the threshold, such as the waveform of symbol 61, is detected, The banknote which is passed is determined by a tape roll, and the banknote is transferred to the reject pocket 80.

The stacking pocket 90 is an accumulation unit for temporarily storing normal banknotes by kind, and the reject pocket 80 is an accumulation unit for temporarily storing banknotes to be rejected without being processed normally.

When it is determined whether to transfer the banknote to the stacking pocket 90 or the reject pocket 80 according to the determination result, the control unit 20 drives the selector 70 to select a transfer path to determine the final transfer destination of the banknote. do.

Meanwhile, the threshold may be preset in various thresholds. The intensity for the signal, the pattern for the signal, and the like may be set in advance as a threshold.

For example, if the threshold is set to '530' as the strength for the signal, as shown in Fig. 6, the waveform of 62 is determined as a normal banknote as in the threshold, and the waveform of 61 is the strength of the threshold '530'. Because it exceeds, it is judged by tape winding.

Further, although not shown in the drawing, likewise, if the threshold is preset and registered as a pattern for the signal, that is, if the pattern of the normal signal and the acceptable pattern threshold when the normal banknote passes are registered and stored, the banknote is stored. If the signal received when passing out of the threshold of the registered pattern, the bill is judged as a tape winding.

The pattern of the signal may be a variety of patterns such as the width of the received signal, the number of inflection points, inflection point shape.

7 is an exemplary diagram of an internal mechanism of the automatic teller machine when the tape winding detecting apparatus is implemented in the automated teller machine according to an embodiment of the present invention.

And a selector 70 for discharging the banknote slot and rollers for transferring the banknotes and dividing the banknote into the stacking pocket 90 and the reject pocket 80, and the periodic wave transmitting conductor wave 31 between the rollers. And periodic wave receiving conductor wave 32 are positioned.

When the bill is placed on the bill slot (1), the driving unit is operated to transfer the bill into a single form inside the automatic teller machine, and various sensors located between the rollers are operated to determine whether the bill is in the process of transferring the bill. And it determines the authenticity.

The banknotes recognized as banknotes through the authenticity of the banknotes are continuously conveyed along the conveying path and conveyed to the point where the capacitance sensor 30 is located.

When the banknote passes between the periodic wave transmitting conductor plate 31 and the periodic wave receiving conductor plate 32 of the capacitive sensor 30, it is determined whether or not the tape is wound using the detected signal.

The controller determines whether to discharge the bill into the stacking pocket 90 or the reject pocket 80 according to a method previously selected by the manager for the type of bill, authenticity, and discrimination of the tape. The controller drives the selector 70 to discharge the banknote in the selected direction.

8 is a flowchart illustrating a process of detecting a tape winding using a capacitive sensor according to an embodiment of the present invention.

When the bill is placed in the bill slot, the bill is sent (S81) through the roller into the device.

As the bills are transferred in a sheet form along the bill transfer path, whether the bill is recognized and whether the counterfeit money is true or not is determined, the bill authenticity processing (S82) is performed. That is, various sensors located between the rollers are operated in the course of transferring the paper money to determine whether the paper money is authentic and whether the money is counterfeit or not.

Banknotes which have undergone banknote authenticity continue to move along the banknote conveying path, and when the banknote passes between the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate of the capacitive sensor, the periodic wave receiving conductor plate is removed from the periodic wave transmitting conductor plate. A signal is detected by receiving the radiated frequency (S83).

Thereafter, it is determined whether the received signal is out of the threshold range (S84), and it is determined whether or not the tape is wound.

As shown in Fig. 6, when the normal banknote without the tape passes, the dielectric constant between the two conductive plates changes due to the passage of the banknote, thereby detecting a signal as indicated by reference numeral 62. On the other hand, if the tape roll passes between the two conductor plates, the result is that the tape is present between the two conductor plates in addition to the bills, and changes to a permittivity different from the permittivity when the normal bill passes. Is detected.

Therefore, when the signal received when the banknote passes through the waveform change as shown by the sign 61 of FIG. The banknote is discriminated by a tape ticket.

The controller determines whether the waveform of the received signal is outside the threshold range as described above (S84), and when the banknote passing through the capacitance sensor is determined to be a normal banknote, transfers the banknote to the stacking pocket (S86), and the tape winding When it is determined that the bill is transferred to the reject pocket (S86).

The above processes (S82, S83, S84, S85, S86) are repeated until the transfer of all the inserted banknotes is completed (S87), and if the transfer of all the banknotes is completed, the count of the banknotes transferred to the stacking pocket and The result of counting the banknote conveyed to the reject pocket is displayed (S87).

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Accordingly, the scope of the patent of the present invention is not limited by the above-described embodiments, and it will be obvious that the patent scope covers not only the claims but also the equivalents.

1 is a perspective view schematically showing a tape winding detection structure according to the prior art.

2 is a block diagram of a tape winding detection apparatus using a capacitive sensor according to an embodiment of the present invention.

3 is a diagram illustrating the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate according to an embodiment of the present invention.

4 is a view showing a bill is transferred in a direction orthogonal to the transfer direction of the bill transfer path between the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate of the capacitive sensor according to an embodiment of the present invention.

5 is a graph illustrating a signal received when a banknote passes between a periodic wave transmitting conductor plate and a periodic wave receiving conductor plate according to an embodiment of the present invention.

6 is a diagram illustrating a signal obtained by amplifying a received signal, signal processing, and digitization according to an exemplary embodiment of the present invention.

7 is an exemplary diagram of an internal mechanism of the automatic teller machine when the tape winding detecting apparatus is implemented in the automated teller machine according to an embodiment of the present invention.

8 is a flowchart illustrating a process of detecting a tape winding using a capacitive sensor according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

20: control unit 30: capacitive sensor

31: periodic wave transmitting conductor plate 32: periodic wave receiving conductor plate

40: frequency generator 50: signal processor

60: amplifier 70: selector

80: reject pocket 90: stacking pocket

Claims (15)

A plurality of receiving conductor plate units are placed on the circuit board in an array form at regular intervals, and one electrode plate facing each other in a direction orthogonal to the period receiving conductor plate and the banknote transfer path. A capacitive sensor having a periodic wave transmitting conductor plate; A frequency generator for generating a periodic wave signal and applying the periodic wave signal to the periodic wave transmission conductor plate; A medium width part amplifying a signal received through the periodic wave receiving conductor plate; A signal processor for A / D converting the signals amplified by the amplifier in the order of reception; When the bill is transferred between the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate, the periodic wave signal generated by the frequency generator is radiated through the periodic wave transmitting conductor plate, wherein the periodic wave receiving conductor plate and When the signal received through the amplifier and the signal processing unit is out of the preset threshold range, the control unit for judging the banknotes currently passing through the tape winding Tape winding detection device using a capacitive sensor comprising a. The tape winding detection apparatus of claim 1, wherein the periodic wave has a frequency band between 100 KHz and 500 KHz. The tape winding detection device according to claim 1, wherein the periodic wave is any one of a square wave, a triangle wave, and a pulse wave. delete The apparatus of claim 1, wherein the distance between the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate has a distance of 1.5 mm to 30 mm. delete delete The tape winding detection device using a capacitive sensor according to claim 1, wherein the distance between the centers of the receiving conductor plate units is placed in an array form with a spacing of 3 mm to 50 mm. The tape winding detection device using a capacitive sensor according to claim 1, wherein the receiving conductor plate unit has a parallelogram shape. According to claim 1, The control unit, if the received signal is within the threshold range, the banknote passing between the two conductor plates of the capacitive sensor is determined as a normal banknote and transferred to the stacking pocket, while, If the received signal is out of the threshold range, the tape winding detection device using a capacitive sensor to determine the bill passing through the two conductor plates of the capacitive sensor as a tape winding and to transfer to the reject pocket. The tape winding detection device according to claim 1 or 10, wherein the threshold is a strength threshold of a preset signal. The tape winding detection device according to claim 1 or 10, wherein the threshold value is a pattern threshold value of a preset signal. A first step of performing a bill transfer in a sheet form along a bill transfer path and determining whether or not the bill is authentic; When it is determined as a bill, a plurality of receiving conductor plate units face each other in a direction orthogonal to the periodic wave receiving conductor plate and the periodic wave receiving conductor plate and the bill transfer path, which are placed on the circuit board in an array form at a predetermined interval. A second step in which bill transfer is carried out between the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate of the capacitive sensor having a periodic wave transmitting conductor plate formed of one electrode plate positioned; A third step of radiating a periodic wave signal through the periodic wave transmitting conductor plate and receiving the signal through the periodic wave receiving conductor plate while a bill is transferred between the periodic wave transmitting conductor plate and the periodic wave receiving conductor plate; A fourth step of discriminating the banknote currently being passed through the tape when the received signal is out of a preset threshold range Tape winding detection method using a capacitive sensor comprising a. 14. The method of claim 13, wherein the fourth process determines that the bill passing through the two conductor plates of the capacitive sensor is a normal bill and transfers it to the stacking pocket if the received signal is within the threshold range. When the received signal is out of the threshold range, the tape winding detection method using the capacitive sensor for determining the bill passing through the two conductor plates of the capacitive sensor as a tape winding and transported to the reject pocket. 15. The method of claim 14, wherein when the banknote transfer of the inserted banknotes is completed through the first, second, third, and fourth processes, the count of the banknotes transferred to the stacking pocket and the reject pocket are transferred. A tape winding detection method using a capacitive sensor that displays the result of counting banknotes.

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