KR102197789B1 - Active control apparatus for bill interval of bill sorter and method thereof - Google Patents

Abstract

The present invention relates to a device and a method for actively adjusting the amount of money, including a motor that generates a driving force for input or transfer of bills, a bill detector that detects the input or transfer of the bill, and the current bill transfer state through the bill detector. It detects data, predicts the distance between the current banknote and the next banknote to be inserted based on the detected transfer state data of the current banknote, and actively controls the speed of the motor in response to the predicted interval. It includes a control unit that adjusts the transfer interval between bills to be input.

Description

BACKGROUND OF THE INVENTION [0002] TECHNICAL FIELD [ACTIVE CONTROL APPARATUS FOR BILL INTERVAL OF BILL SORTER AND METHOD THEREOF}

The present invention relates to an apparatus and method for actively adjusting the spanning of a bill counter, and more particularly, to actively control the feed rate for the next bill to be fed based on the data obtained by measuring the current state of bill transfer. The present invention relates to a device and a method for actively adjusting the span of a bill making machine to allow the gap to be adjusted.

In general, the bill machine counts the bills as well as discriminates whether the accepted bills are legitimate or suitable for bill circulation. For example, differentiating bills (ie, new bills / old bills / damaged bills) or whether they are counterfeit bills.

For reference, the paper money machine described in an embodiment according to the present invention recognizes the types of bills (for example, 1,000 won, 5,000 won, 10,000 won, dollar, renminbi, euro, yen, etc.), discriminates counterfeit/counterfeit bills, and counts bills. B. It is used as a concept that includes all of the various bill handling devices equipped with a function of paper money reprinting (for example, to identify a state that can or cannot be distributed to the extent of damage such as graffiti, contamination, tear, etc.).

However, in the present embodiment, the billing machine is not limited to only bills, and documents, papers, banknotes, checks, bills, securities, certificates, medium, paper, gift certificates, coupons, tickets, trademark attachments, and Please note that it can also be applied to ID cards.

On the other hand, these paper money spinning machines are not limited to any one region or country, but are exported to various regions or countries around the world, installed and operated.In order to increase the processing speed of bills, at least maintain the input performance or the interval between the bills (i.e., keep the interval). Basic performance such as should be secured.

Accordingly, the paper money machine is the rotational speed of the motor (e.g., input motor, transfer motor) in order to maintain the paper money input speed (i.e., the speed at which paper money is transferred along the transfer path from the paper money input unit to the discrimination unit) at a preset target input speed. Should be maintained at a preset target rotation speed (e.g. 1000 rpm), but in reality, errors due to slipping, skewed, or delay of the inserted bills (e.g., the spacing (or span) of the inserted bills) are constant. Because chain errors occur due to failure to maintain), chain errors are generated through feedback control (i.e., control that breaks the motor by measuring the actual time or interval between the previously inserted and existing bills and the currently inserted bills). Decreased.

However, in the feedback control, since the speed of the bill does not immediately decrease during the braking operation of the motor, the length of the bill transfer path from the bill input section to the bill discrimination section is sufficiently long to be effective.

Therefore, in order to reduce the size of the banknote spinning machine, the length of the banknote transfer path must be reduced. However, when the length of the banknote transfer path is reduced as described above, there is a problem that the conventional feedback control cannot be applied to the span control.

The background technology of the present invention is disclosed in Korean Patent Registration No. 10-0812254 (2008.03.04. registration, bill discrimination device).

According to an aspect of the present invention, the present invention was created to solve the above problems, and based on the data of measuring the current state of the paper money, etc., by actively controlling the input speed of the next bill, etc. An object of the present invention is to provide a device and a method for controlling an active span to adjust the spacing of bills.

An active span adjustment device according to an aspect of the present invention includes a motor for generating a driving force for inputting or transferring bills; A bill detector for detecting the input or transfer of the bill; And detecting data on the current state of the bill through the bill detection unit, predicting a distance between the current bill and the next bill to be inserted based on the detected data on the current bill, and the motor in response to the predicted interval. It characterized in that it comprises a; and a control unit for actively controlling the speed of the current bill and to adjust the interval between the next bill to be inserted.

An active span adjustment method according to another aspect of the present invention includes the steps of: detecting, by a control unit, data on a current transfer state of a bill through a bill detector; Predicting, by the control unit, a distance between the current banknote and the next banknote to be inserted based on the detected data on the current banknote transfer state; And adjusting, by the control unit, an interval between the current bill and the next bill to be input by actively controlling the speed of the motor in response to the predicted interval.

According to an aspect of the present invention, according to the present invention, the interval between bills can be adjusted by actively controlling the input speed for the next bill to be input based on data obtained by measuring the transfer state of the current bill. In addition, the present invention can reduce the error rate while minimizing the reduction in processing speed by actively variably controlling the processing speed according to the conveying state of bills compared to the conventional method. In addition, according to the present invention, the length of the banknote transfer path between the banknote input unit and the banknote discrimination unit in the banknote spinning machine can be shortened, thereby miniaturizing the banknote spinning machine. In addition, according to the present invention, the same design is possible without a separate input port design according to various standards of each country, by actively adjusting the range according to the transfer state of the bill.

1 is an exemplary view showing a schematic configuration of an active span adjustment device according to an embodiment of the present invention.
FIG. 2 is an exemplary view for explaining a basic operation of a control unit when bills are input in FIG. 1.
FIG. 3 is an exemplary view for explaining a method of acquiring data on a current transfer state of a banknote when a banknote is input in FIG. 1.
FIG. 4 is an exemplary view for explaining another method of acquiring data on a current state of conveyance of a banknote when a banknote is input in FIG. 1.
5 is an exemplary view illustrating a situation in which a chain error may occur according to the width of a bill in FIG. 2.
6 is an exemplary view illustrating a situation in which a chain error may occur according to an input state of a bill in FIG. 2.
7 is an exemplary view for explaining the principle of predicting the occurrence of a chain error from a relationship between a bill interval and an input position in relation to an embodiment of the present invention.
8 is a flow chart for explaining an active span adjustment method according to an embodiment of the present invention.
9 is an exemplary view showing a test result processed by applying an active span adjustment method according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of an active span control apparatus and method according to the present invention.

In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention and may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

Hereinafter, the term "banknote" in this embodiment is not limited to only bills, and papers, banknotes, checks, drafts, securities, certificates, media, paper, documents, gift certificates, coupons, tickets, trademark attachments, And it can be used as a concept of a branch including an identification card.

1 is an exemplary view showing a schematic configuration of an active span adjustment device according to an embodiment of the present invention.

As shown in FIG. 1, the active span adjustment device according to the present embodiment includes a bill sensing unit 110, a control unit 120, a motor driving unit 130, and a motor 140.

The bill detection unit 110 is installed with one or at least two sensors on the bill transfer path between the bill input unit 10 and the bill discrimination unit 20 to transfer the bill, that is, start and finish input of the bill. , Whether the bill passes, the interval between bills, the length of the bill (ie, width), whether or not the bill has slipped and the degree of slip, and whether or not the bill has skew and the degree of skew are detected (see FIGS. 3 and 4).

When the bill detection unit 110 is composed of a plurality of sensors, it may be arranged in a line perpendicular to the bill transfer direction, and in some cases, in two rows at regular intervals. Can be placed. It is desirable to be.

Here, the bill detector 110 may use, for example, an optical sensor such as an infrared sensor, and not limited thereto, and may use a contact or non-contact motion detection sensor such as a sound wave method or a mechanical displacement measurement method. For convenience, in the present embodiment, it is assumed that an optical sensor is used.

The bill machine according to the present embodiment picks up bills one by one using a pickup roller (or kicker roller) 11 in the bill input section 10, and uses a transfer roller (or feed roller) 12 to specify the inside. It is transferred to the bill identification unit 20 through a path (ie, a bill transfer path).

The control unit 120 measures the current state of bill transfer (e.g., starting and completion of bills, whether bills have passed, space between bills, bill length (i.e., width), bill slip occurrence, and slip amount). , And the rotation speed of the motor 140 (e.g., input motor, transfer motor, and various types of motors for transferring bills) based on whether or not skew occurs and the amount of skew of the bill, By actively controlling the feed rate for bills, it is possible to maintain a constant gap (or span) between bills.

At this time, the rotation speed of the motor 140 to be controlled (or the input speed of the next bill) to be controlled in response to the measured data of the current state of the bill may be previously stored in an internal memory (not shown) in the form of a lookup table. .

That is, when the next bill is inserted by the current motor rotation speed from the data measuring the state of the current bill, the control unit 120 determines the distance between the current bill and the next bill (that is, the end point of the current bill (the next bill). The distance between the point closest to) and the starting point of the next bill) (or span) can be predicted.

For reference, if the current bill has a skew and the posture is misaligned, the gap (or span) between the current bill and the next bill is an imaginary bill corresponding to the direction of bill insertion at one point (edge) of the current bill closest to the next bill. When a vertical line (the first vertical line) is drawn, the first vertical line and the second vertical line when a virtual vertical line (the second vertical line) corresponding to the direction of bill input at a point (corner) of the next bill closest to the current bill is drawn. It can be referred to as the distance between (see Fig. 3).

In addition, even if slip occurs in the current bill, the distance (or span) with the next bill cannot be kept constant (see FIG. 4).

As described above, when a skew or slip occurs in the current bill, the gap (or span) between the current bill and the next bill becomes short, so that a sufficient time interval for performing subsequent operations (discrimination, loading, etc.) cannot be secured.

Therefore, the control unit 120 predicts the distance (or span) between the current banknote and the next banknote from the measured data of the transfer state of the current banknote, and the motor ( 140) (e.g., input motors, transfer motors, and various types of motors for paper money transfer) are controlled to be slower than the standard speed to slow the input rate for the next bill to ) To widen. Conversely, as a result of predicting the gap (or span) between the current banknote and the next banknote from the measured data of the current banknote, if the gap (or span) becomes longer than the reference interval, the rotation speed of the motor 140 By controlling the speed faster than the reference speed, the input speed for the next bill to be inserted is increased to narrow the gap between bills (i.e., the span).

As described above, the control unit 120 according to the present embodiment predicts the distance (or span) between the current banknote and the next banknote based on the measured data of the current banknote transfer state, and the motor 140 according to the prediction result By actively controlling the rotation speed of the banknotes to be slow (when the gap between the banknotes is narrow) or fast (when the gap between the banknotes is wide), the gap between the banknotes (or between the banknotes) is kept constant.

The operation of the control unit 120 will be described with reference to FIGS. 2 to 8.

2 is an exemplary view for explaining the basic operation of the control unit when bills are input in FIG. 1, wherein the interval between bills (i.e., inter-bank) is the starting point of the current bill 1 and the start of the next bill 2 It means the section (A) between the time points, and in a device that normally counts 1000 sheets per minute (i.e., bill counter), it is an interval of about 60 msec in time and an interval of about 138 mm in distance (about 44 pie feed roller).

In addition, in Fig. 2, the section (B) between the end point of the current bill (1) and the start point of the next bill (2) is a bill discrimination and processing section, and the distance of this section (B) is different for each bill ( 5), the control unit 120 transfers the bill to the pocket by physically operating a solenoid (not shown) and sorting the bill type, counterfeit recognition, orthodox recognition, serial number recognition, and physically for bills in this section (B). And load it.

For example, since the control unit 120 has to physically operate the solenoid, when the section B is narrowed below a preset criterion, it does not perform the bill recognition operation, and determines that a chain error has occurred immediately, and the corresponding bill ( Example: The next bill) is transferred to the reject pocket. For example, if the distance of section B is within 15mm or within 8msec in time, the control unit 120 determines that a chain error has occurred.

FIG. 3 is an exemplary view for explaining a method of acquiring data on a current state of bill transfer when a bill is input in FIG. 1, wherein the bill detector is configured with a plurality of bill detection sensors (eg, jam detection sensors). 110), the current paper money transfer status data (e.g., paper money input start and completion, paper money passing, space between paper money, paper money length (i.e. width), paper money slip occurrence and slip amount, and paper money Acquires whether or not skew has occurred and the amount of skew).

From the acquired current transfer state data, the control unit 120 can know the degree of distortion (for example, the degree of skew or slip) compared to the case where the current paper money is normally inserted (in a case where the current paper money is inserted in a row perpendicular to the direction of paper money transfer). From this, it is possible to predict how short the interval (or span) between the next bills will be compared to the standard.

FIG. 4 is an exemplary view for explaining another method of acquiring current state data of a banknote when a banknote is input in FIG. 1, and is composed of a plurality of banknote detection sensors (eg, kicker roller position sensor, input encoder, etc.). Current bill transfer status data measured by the bill detector 110 (e.g., starting and completion of bills, whether bills have passed, space between bills, bill length (i.e., width), bill slip occurrence and slip amount) , And whether or not skew occurs and the amount of skew of the bill) are acquired.

From the obtained state data of the current bill, the control unit 120 can know the degree of slipping (eg, the degree of slip) compared to the case where the current bill is normally inserted (in a case where the current bill is inserted at regular intervals), from which the interval between the next bills ( Or, it is possible to predict how short the period) will be compared to the standard.

For example, in Figure 4, the input encoder signal outputs a total of 34 pulses per rotation, and if the banknote is normally inserted without slipping, the banknote input is always detected at a certain point (e.g., 29 pulses), but the banknote slips. In this case, the bill input is detected at a later point (eg, after 29 pulses). Therefore, it is possible to predict the interval (or distance) between the next banknote and the next banknote by calculating the point at which the current banknote input is detected.

5 is an exemplary view illustrating a situation in which a chain error may occur according to the width of a bill in FIG. 2.

Figure 5 (a) is an exemplary diagram showing an ideal banknote input state, that is, a banknote width of about 70mm and an exemplary diagram showing a state in which equal spacing is maintained with a span of 138mm.In such an ideal banknote input state, a chain error occurs. The incidence rate is low.

However, if the width of the inserted bill is wide as shown in (b) of FIG. 5 (for example, the width of the bill is about 90 mm), the width of the bill may be narrowed even if the same distance is maintained, or as shown in (c) of FIG. If these different banknotes (e.g., the width of each country's banknotes are different, or the width of each type of banknotes is different depending on the country) are mixed irregularly, the area is not uniform, and the occurrence rate of chain errors is high.

6 is an exemplary diagram illustrating a situation in which a chain error may occur according to an input state of a bill in FIG. 2.

As shown in (a) of FIG. 6, the width of the inserted bill is not wide and constant, but slip or skew occurs (e.g., in underdeveloped countries, bills are old due to a long collection period of bills, and vinyl materials such as polymer bills Bills are slippery and have a high probability of slipping or skew), or if a slip or skew occurs in a state in which a number of bills of different widths are mixed irregularly as shown in Fig. 6(b), Since the span is not constant, the occurrence rate of chain errors is high.

7 is an exemplary diagram for explaining the principle of predicting the occurrence of a chain error from a relationship between a bill interval and an input position in relation to an embodiment of the present invention.

Among the plurality of signals shown in FIG. 7, an upper signal (red signal) indicates a bill space, and a lower signal (blue signal) indicates an input position.

First, referring to the bill interval signal (red signal), when bills are normally inserted, the bill interval maintains a data value of about 800 within an error range. Next, referring to the input position signal (blue signal), when the kicker roller 11 operates normally, a data value of about 8 is maintained within an error range.

However, if a slip occurs in the kicker roller 11 during bill input, a data value of 10 or more appears. In addition, when the slip occurs as described above, a data value of about 700 for the bill interval signal (red signal) for the next bill appears. That is, if slip or skew occurs in the kicker roller 11 for the current bill, the gap between the current bill and the next bill (i.e., the next bill) is narrowed and it is predictable that a chain error will occur in the next bill. will be.

8 is a flowchart illustrating an active span adjustment method according to an embodiment of the present invention.

As shown in FIG. 8, the control unit 120 detects the transfer state data of the currently input banknote (ie, the current banknote) through the banknote detection unit 110 (S101).

For example, the data on the current transfer status of the banknote includes the start and completion of the banknote input, the passage of the banknote, the interval between the banknotes, the length of the banknote (i.e., the width), whether the banknote slip occurred and the amount of slip, and whether the banknote skew occurred. It includes at least one or more of the skew amount.

The control unit 120 predicts an interval (or span) between the current bill and the next bill based on the detected state data (S102).

For example, when a skew occurs in the current bill, the control unit 120 predicts (or calculates) a gap (or span) between the current bill and the next bill according to the degree of skew (eg, a twisted angle). In addition, when a slip occurs in the current bill, the control unit 120 predicts (or calculates) a distance (or span) between the current bill and the next bill according to the slip degree (eg, slipped distance).

The controller 120 controls the speed of the motor 140 to adjust the bill interval (or span) above a reference in response to the predicted (or calculated) spacing (or span) between the current bill and the next bill ( S103).

For example, when a skew or slip occurs in the current bill, the interval (or span) between the current bill and the next bill is usually shortened, so in response to the shortened interval (or span) between the shortened bills, the controller 120 is a motor driving unit. Through 130, the rotational speed of the motor 140 is reduced compared to the reference speed.

For example, the greater the degree of skew or slip of the current bill, the more the rotational speed of the motor 140 is reduced, and the smaller the degree of skew or slip of the current bill, the less the rotational speed of the motor 140 is reduced.

At this time, the rotation speed of the motor 140 to be controlled (or the input speed of the next bill) to be controlled in response to the measured data of the current state of the bill may be previously stored in an internal memory (not shown) in the form of a lookup table. , The motor 140 includes an input motor, a transfer motor, and at least one motor for transferring bills.

The control unit 120 actively controls the rotation speed of the motor 140 in response to the interval (or span) between the current bill and the next bill predicted (or calculated) as described above, so that the interval between the current bill and the next bill ( Or the span) is constantly adjusted (S104).

9 is an exemplary view showing a test result processed by applying an active span adjustment method according to an embodiment of the present invention, in which each country (eg, US, China, Mexico, Iran, Indonesia) banknotes are fixed at a fixed speed (1000 rpm). , And 750rpm), and the error generated when processing by the active span adjustment method through span prediction according to the present embodiment were compared.

Referring to FIG. 9, in most countries, when bills are processed at a fixed speed at a high speed (for example, 1000 rpm), at least four errors occurred, resulting in a total of 43 errors, and a fixed speed at a low speed (for example, 750 rpm). Even when handling banknotes, at least one error occurred per country, resulting in a total of 5 errors. However, when bills are processed by the active span adjustment method through the span prediction according to the present embodiment, a total of 3 cases generate fewer errors, but a higher speed than when bills are processed at a fixed speed of low speed (e.g. 750 rpm). Could be handled.

As described above, when bills are processed by applying the active span adjustment method through the span prediction according to the present embodiment, the error occurrence rate is improved and the processing speed is dramatically improved compared to the low-speed fixed rate. In addition, the present embodiment is not affected by processing even if the length of the bill transfer path between the bill input unit and the bill discrimination unit in the bill machine is short, so that the bill transfer path can be shortened, thereby reducing the size of the bill counter. have. In addition, the present embodiment has an effect of enabling the same design without a separate slot design according to various standards of each country by performing an active span adjustment in software according to the state of the bill.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but these are only exemplary, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand the point. Therefore, the technical protection scope of the present invention should be determined by the following claims.

10: bill input section
20: bill identification unit
110: bill detection unit
120: control unit
130: motor drive unit
140: motor

Claims (10)

A motor generating a driving force for inputting or transferring bills;
A bill detector for detecting the input or transfer of the bill; And
The bill detection unit detects the current bill transfer state data, predicts the distance between the current bill and the next bill to be inserted based on the detected current bill transfer state data, and the motor in response to the predicted interval. Including; a control unit for actively controlling the speed to adjust the interval between the current bill and the next bill to be input,
The bills may include a plurality of types of bills, and the bill detection unit is provided in the bill input section or between the bill input section and the bill discrimination section.
The method of claim 1, wherein the distance between the current bill and the next bill to be input is,
A first virtual vertical line corresponding to a banknote input direction at a point of the current banknote closest to the next banknote to be inserted, and a banknote input direction at a point of the next banknote closest to the current banknote An active span adjustment device of a banknote spinning machine, characterized in that it is a distance between virtual second vertical lines.
The method of claim 1, wherein the current paper money transfer state data,
It characterized in that it comprises at least one or more of the start and completion of bills, whether or not the bills pass, the interval between bills, the length (width) of bills, whether or not the bills slip, and whether or not the bills are skew. The active spanning device of the paper money machine.
The method of claim 1, wherein the control unit,
An active span adjustment device for a bill counter, characterized in that as the predicted interval between bills is shorter than the reference, the rotation speed of the motor is reduced, and as the predicted interval between bills is longer than the reference, the rotational speed of the motor is accelerated. .
The method of claim 4, wherein the criterion is
An active span adjustment device for a bill machine, characterized in that the minimum bill gap between the current bill and the next bill set so as not to cause a chain error.
The method of claim 1, wherein the control unit,
An active span adjustment device for a bill counter, characterized in that the speed of the motor to be controlled corresponding to the predicted interval is controlled by referring to data stored in advance.
Detecting, by the control unit, data on the current state of transfer of the bill through the bill detector;
Predicting, by the control unit, a distance between the current banknote and the next banknote to be inserted based on the detected data on the current banknote transfer state; And
Including, the control unit actively controlling the speed of the motor in response to the predicted interval to adjust the interval between the current bill and the next bill to be input; and
The bill may include a plurality of types of bills, and the bill detection unit is provided in the bill input unit or between the bill input unit and the bill discrimination unit.
The method of claim 7, wherein the current transfer state data of the banknote,
It characterized in that it comprises at least one or more of the start and completion of bills, whether or not the bills pass, the interval between bills, the length (width) of bills, whether or not the bills slip, and whether or not the bills are skew. How to actively adjust the span of the bill straightener.
The method of claim 7, wherein in the step of actively controlling the speed of the motor,
The control unit,
An active span adjustment method of a bill counter, characterized in that as the predicted interval between bills is shorter than the reference, the rotation speed of the motor is reduced, and as the predicted interval between bills is longer than the reference, the rotational speed of the motor is accelerated. .
The method of claim 7, wherein in the step of actively controlling the speed of the motor,
The control unit,
And controlling the speed of the motor with reference to pre-stored data corresponding to the predicted interval between bills.

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