KR101518035B1 - banknote identifying machine and method of identifying banknote - Google Patents

Abstract

The present invention relates to a banknote identifying machine comprising: a first light source that is installed inside a slot in a main body and emits a light across a direction in which the slot extends to detect a banknote entering the slot; an insertion detection unit having a first optical receiver for detecting a light penetrating the banknote from the first light source; a banknote loading unit for transporting the banknote entering through the slot along a recognition path or returning the banknote; a second light source installed on the recognition path to emit a light onto the banknote being transported; a banknote identifying unit having a second optical receiver for detecting a light penetrating the banknote from the second light source; and a control unit. The control unit controls the banknote loading unit. If the control unit receives a signal corresponding to the insertion of a banknote from the first optical receiver, the control unit calculates a compensation value corresponding to the difference between the light intensity received from the first optical receiver and a reference signal, determines whether the banknote is normal by comparing a signal resulting from summing up the calculated compensation value and a signal received from the second optical receiver with reference banknote identification information, and displays the amount if the banknote is normal, or returns the banknote by controlling the banknote loading unit if the banknote is not normal. Accordingly, banknote identification errors can be suppressed by calculating a change in banknote penetration signal in a banknote insertion detection step and compensating for the change during a banknote identification process.

Description

TECHNICAL FIELD [0001] The present invention relates to a banknote identification apparatus and method for identifying a banknote,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper currency discrimination apparatus and a paper currency discrimination method, and more particularly, to a paper currency discrimination apparatus and a paper currency discrimination method which are capable of reducing a paper currency discrimination error due to a change in external environment.

The bill identifying apparatus is a device for identifying a bill which is installed in an automatic vending machine, a bus, or the like.

A conventional paper currency discriminating apparatus is configured such that when a user pushes a paper money into an input port, the paper money is introduced into the inside by a roller, and the introduced paper money is sensed by a sensor to recognize the type of paper money.

In addition, when the paper is damaged and can not be recognized or when a paper other than a paper currency is inserted, the roller rotates in the reverse direction to return the paper currency.

Such a paper currency discriminating apparatus is variously known as Registration Practical Utility Model No. 20-0415505.

[0003] In such a bill discriminating apparatus, a sensor for discriminating authenticity of a banknote illuminates the banknote, receives light transmitted through the banknote, and judges whether the banknote is true or false. The ambient temperature is low, Or if dust or the like is floated in the input port, a bill recognition error may occur even though the bill is a normal bill.

It is an object of the present invention to provide a bill discriminating apparatus and a bill discriminating method capable of suppressing a bill recognizing error by compensating a light transmission fluctuation amount of a bill due to an external environment change .

In order to achieve the above object, a bill discrimination apparatus according to the present invention comprises a first light source provided in a charging port of a main body and configured to irradiate a light across an extending direction of a charging port so as to detect whether a bill is entered or not, And a first light receiving unit for detecting the light having passed through the inserted banknote; A banknote loading unit adapted to transfer or return the banknotes inserted through the input port along the recognition path; A second light source provided on the recognition path and configured to emit light to the bill to be conveyed and a second light receiving section to detect light transmitted through the bill from the second light source; And controls the driving of the bill loading unit. When a signal corresponding to bill entry is received in the first light receiving unit, the amount of light received by the first light receiving unit is compared with a set reference signal, and a compensation value And a signal obtained by adding the calculated compensation value to the signal received by the second light receiving unit is compared with the bill identification reference information to determine whether there is a normal bill or not. If the bill is a normal bill, the amount is displayed on the display unit, And a control unit for controlling the bill loading unit to process the bill.

According to another aspect of the present invention, there is provided a bill identification method comprising: a first light source installed in a charging port of a main body, the first light source irradiating a light across an extending direction of a charging port, A banknote loading unit adapted to transfer or return the banknotes introduced through the banknote along the recognition path; and a banknote loading unit configured to transfer the banknote inputted through the banknote to the recognition path, And a second light receiving unit for detecting light transmitted through the bill from the second light source, and a control unit for controlling the driving of the bill loading unit, And a control unit for discriminating the presence or absence of normal banknotes using the signal received from the input detection unit and the signal received from the banknote identification unit, In the bank note identification method, a. When receiving a signal corresponding to banknote entry in the first light receiving unit, the control unit compares the amount of light received by the first light receiving unit with a predetermined reference signal to calculate a compensation value corresponding to the difference with the reference signal; I. Detecting the bill scan fluorescent light signal detected by the second light receiving unit of the bill identification unit while the control unit controls the bill loading unit such that the bill inserted through the input port is transferred to the recognition path; All. Adding the compensation value to the bank bill scan light signal; la. Detecting length information of the bill; hemp. If the bills are determined to be abnormal, the bills loading unit is checked to determine whether the bills are normal bills or not. If the bills are not normal, ; ≪ / RTI >

According to the bill discriminating apparatus and the bill discriminating method according to the present invention, it is possible to calculate the variation amount of the bill signal light signal in the step of sensing the bill insertion, and to compensate the bill recognizing process to suppress the bill recognition error.

1 is a cross-sectional view schematically showing a bill discriminating apparatus according to the present invention,
FIG. 2 is a block diagram showing a control system of the bill identification apparatus of FIG. 1,
Fig. 3 is a flow chart showing the process when a bill is inserted into the bill identification apparatus of Fig. 1. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a bill identifying apparatus and a bill identifying method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view schematically showing a bill identification apparatus according to the present invention, and FIG. 2 is a block diagram showing a control system of the bill identification apparatus of FIG.

1 and 2, a bill discriminating apparatus 100 according to the present invention includes a main body 110, an input detection unit 130, a bill loading unit 150, a bill identification unit 160, a control unit 171, A storage unit 173 and a display unit 175. [

The main body 110 has a conventional structure in which the banknote 10 charged through the input port 112 can be conveyed through the recognition path 114.

The input detecting unit 130 is installed in the input port 112 of the main body 110 and irradiates light to cross the extending direction extending from the input port 112 to the recognition path 114 so as to detect whether the bill 10 is entered or not. And a first light receiving section 132 for detecting light having passed through the bill 10 irradiated by the first light source 131 and inputted.

Here, it is preferable that the first light source 131 is applied to irradiate light corresponding to the second light source 161, which will be described later.

That is, when the second light source 161 is constructed to emit blue light, the first light source 131 emits blue light. When the second light source 161 is constructed to emit ultraviolet light, the first light source 131 131 is used to emit ultraviolet light.

The first light receiving section 132 outputs a signal corresponding to the detected light quantity to the control section 171. [

The banknote loading unit 150 is installed on a banknote conveying path that extends from the input port 112 to the recognition path 114 on a position distant from the input detection unit 130 so that the banknote 10, 114 to the transfer or input port 112.

The banknote loading part 150 includes first and second rollers 151 and 152 which are installed so as to face each other and convey the banknotes that have passed through the input detecting part 130 to the recognition path 114, The third and fourth rollers 153 and 154 and the first to fourth rollers 151 to 154 provided at the rear of the first and second rollers 151 and 152, And has a belt 156.

The banknote loading unit 150 transfers the banknote 10 in the direction toward the third and fourth rollers 153 and 154 in the process of recognizing the banknote 10, The control unit 171 controls the drive motor (not shown) to rotate normally or reversely.

It is a matter of course that various structures known in the art may be applied to the structure of the paper currency loading section 150.

The bill identifying unit 160 includes a second light source 161 installed on the recognition path 114 between the first roller 131 and the third roller 153 and irradiating light to the bill 10 to be conveyed, And a second light receiving portion 161 for detecting the light transmitted through the banknote 10 from the second light source 161.

Here, the second light source 161 can emit light along a direction crossing the conveying direction of the banknote, and a plurality of light emitting chips arrayed along the direction crossing the conveying direction of the banknote 10 can be applied have.

The second light source 161 may be configured to emit ultraviolet light or blue light.

The second light receiving section 162 detects light transmitted through the banknote 10 and outputs the light to the control section 171. [

The second light receiving section 162 may be a CCD sensor.

The control unit 171 controls the bill loading unit 150 to move the bill along the recognition path 114 when a signal corresponding to bill entry is received in the first light receiving unit 132. [

In this process, the control unit 171 compares the light amount received from the first light receiving unit 132 with the set reference signal to calculate a compensation value corresponding to the difference with the reference signal, and outputs the calculated compensation value to the second light receiving unit 162 The banknote loading unit 150 controls the banknote loading unit 150 when it is determined that the banknote loading unit 150 is abnormal, To be returned.

In the storage unit 173, a reference signal and bill identification reference information are recorded.

Here, the reference signal may be constructed to apply, as an example, a signal detected by the first light receiving unit 132 when the banknote 10 is supplied at a humidity of 60% at 20 캜.

The storage unit 173 stores the light reception information and the length information detected by the second light receiving unit 162 when the normal bill is scanned as the bill identification reference information for each type of bill.

Hereinafter, the control process of the controller 171 will be described in detail with reference to FIG.

First, the control unit 171 detects whether the banknote 10 is inserted into the input port 112 (step 210).

That is, when the signal corresponding to banknote entry is received in the first light receiving unit 132, the control unit 171 determines that the banknote 10 is inserted, and drives the banknote loading unit 150 to move the banknote 10 to the recognition path To be transported.

Also, in this process, the control unit 171 compares the light-emitting signal level, which is the amount of light received by the first light-receiving unit 132, with the set reference signal (step 220).

Thereafter, the compensation value according to the comparison result of step 220 is calculated (step 230). That is, the difference between the amount of light received by the first light receiving unit 132 and the reference signal is calculated as a compensation value.

In addition, the control unit 171 detects a banknote scan light-emitting signal detected by the second light-receiving unit 162 of the bill identification unit 160 in the process of being transported to the recognition path (step 240).

Then, the control unit 171 adds the compensation value to the bill scanned light projection signal to determine the final bill identification information.

The control unit 260 detects the paper currency length from the light receiving signal holding time and the conveyance speed information of the paper currency 10 at the second light receiving unit 162 (step 260).

Thereafter, the control unit 171 compares the finally calculated bill identification information and the bill length information with the bill identification reference information recorded in the storage unit 173 to determine whether there is a normal bill or not, and if it is a normal bill, On the display unit 175. If it is determined to be abnormal, the bill loading unit 150 is controlled to process the bill 10 to be returned.

According to the bill discriminating apparatus 100 and the discriminating method described above, it is possible to reduce the bill recognition error by compensating for the scan information of the bill 10 by judging the variation of the bill transfer amount according to the change of the external environment at the beginning of bill insertion to provide.

110: main body 130:
150: banknote loading part 160: banknote identification part
171: Control section 173:
175:

Claims (2)

A first light source provided in a charging port of the main body and configured to irradiate light so as to intersect the extending direction of the charging port so as to detect whether the banknotes enter the banknote and a first light receiving part for detecting light having passed through the banknote illuminated by the first light source, An input detector having an input detector;
A banknote loading unit adapted to transfer or return the banknotes inserted through the input port along the recognition path;
A second light source provided on the recognition path and configured to emit light to the bill to be conveyed and a second light receiving section to detect light transmitted through the bill from the second light source;
And controls the driving of the bill loading unit. When a signal corresponding to bill entry is received in the first light receiving unit, the amount of light received by the first light receiving unit is compared with a set reference signal, and a compensation value And a signal obtained by adding the calculated compensation value to the signal received by the second light receiving unit is compared with the bill identification reference information to determine whether there is a normal bill or not. If the bill is a normal bill, the amount is displayed on the display unit, And a control unit for controlling the bill loading unit to process the bill. A first light source provided in a charging port of the main body and configured to irradiate light so as to intersect the extending direction of the charging port so as to detect whether the banknotes enter the banknote and a first light receiving part for detecting light having passed through the banknote illuminated by the first light source, And a second light source provided on the recognition path and configured to emit light to the paper currency to be conveyed; and a second light source, which is provided on the recognition path, And a second light receiving unit for detecting light transmitted through the bill from the second light source, and a control unit for controlling the driving of the bill loading unit, using a signal received from the input detecting unit and a signal received from the bill identifying unit And a controller for determining whether or not there is a normal banknote, the method comprising:
end. When receiving a signal corresponding to banknote entry in the first light receiving unit, the control unit compares the amount of light received by the first light receiving unit with a predetermined reference signal to calculate a compensation value corresponding to the difference with the reference signal;
I. Detecting the bill scan fluorescent light signal detected by the second light receiving unit of the bill identification unit while the control unit controls the bill loading unit such that the bill inserted through the input port is transferred to the recognition path;
All. Adding the compensation value to the bank bill scan light signal;
la. Detecting length information of the bill;
hemp. If the bills are determined to be abnormal, the bills can be returned to the banknote loading unit to be returned to the banknote loading unit. The method comprising the steps of: (a) inserting the banknote into the banknote identification device;

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