JP2007094807A - Bill identification device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bill identification device capable of detecting opening/closing of a lid part, using bill detection parts without adding a sensor or the like. <P>SOLUTION: In this bill identification device, having a body part 2 and the lid part 3 openably/closably provided in the body part 2, the bill detection parts 10, 11 each having a light-receiving means and a light-emitting means are disposed in an open area of the lid part. A control part distinguishes the authenticity of a bill, on the basis of detection signals from the bill detection parts 10, 11, and decides the open/closed state of the lid part, on the basis of the detection signals from the bill detection parts 10, 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bill identifying device for identifying authenticity of a bill.

  Forgery of banknotes has become a social problem in the past, and in recent years, crimes due to sophisticated counterfeit banknotes have increased with the progress of copy technology. Therefore, advanced counterfeit measures have been taken on the bill itself, and an apparatus for identifying the authenticity of the bill based on such counterfeit measures has been developed. For example, it is possible to detect special ink such as magnetic ink or ink that emits light in response to ultraviolet light, or to detect the authenticity of a banknote by detecting an embossed banknote surface. In addition to these identification techniques, various improvements have been made to enhance the convenience of the apparatus.

For example, in Patent Document 1, in order to prevent an incomplete setting state of the bill storage unit with respect to the apparatus main body, when the banknote storage unit is closed, the latch of the bill storage unit and the latch receiving hole of the device main body are securely fitted. As long as it does not match, the point which made it rotate in the direction which opens a banknote storage part by an elastic means is described. Moreover, in patent document 2, it has the structure of a holder type, it can handle by the natural operation | movement which inserts a banknote in a folder, and the signal level obtained by the some reflected light detection sensor using ultraviolet LED and infrared LED is shown. It is described that the determination result is displayed by performing authenticity determination in comparison with the genuine level.
JP 2002-92689 A JP 2004-259108 A

  As in the above-mentioned patent document, improvement of convenience is achieved by various improvements in the banknote recognition device, but when adding parts such as sensors or changing the design to improve convenience, Cost increase of minutes is inevitable.

  For example, when a banknote is jammed or the like, the lid is opened to remove the banknote. However, if an open / close detection sensor or the like is used to prevent the lid from forgetting to close and start the operation, In addition to the addition of sensor components, work such as design changes for securing the sensor installation space and system development for detection signal processing is required, which increases costs.

  Then, an object of this invention is to provide the banknote identification device which can also perform opening / closing detection of a cover part using a banknote detection part, without adding a sensor etc.

  The banknote identification device according to the present invention includes a main body, a lid provided on the main body so as to be opened and closed, a light receiving means and a light emitting means, and a banknote detector disposed on the main body or the lid, and a banknote A control unit that identifies a banknote based on a detection signal from the detection unit, the banknote detection unit is disposed in an open area of the lid unit, and the control unit detects a detection signal from the banknote detection unit. And determining means for determining the open / closed state of the lid based on the above. Furthermore, the light receiving means of the banknote detector receives infrared rays and visible rays. Furthermore, the control unit includes a calculation unit that calculates a change ratio of the light reception amount of the light receiving unit when the light emission amount of the light emission unit of the banknote detection unit is changed, and the determination unit is a calculation unit. The opening / closing of the lid is determined based on the calculated change ratio.

  Since the present invention has the above-described configuration, the control unit determines the open / closed state of the lid based on the detection signal from the banknote detection unit arranged in the open area of the lid. The opening and closing of the lid can be determined by utilizing the fact that the light receiving state is different in the banknote detection unit between the opened state and the closed state, and the banknote detection unit is also used without adding a separate sensor. Can be done.

  In addition, if the banknote detection unit performs determination using two types of light, infrared rays and visible rays, used for banknote detection, the light outside the apparatus that enters the light receiving means when the lid is opened. The detection accuracy can be improved while suppressing the influence.

  Moreover, if the change ratio of the light reception amount of the light receiving means when the light emission amount of the light emission means of the banknote detection unit is changed and the lid portion is determined to be opened or closed based on the calculated change ratio, Accurate determination can be performed while suppressing the influence of light incident from the outside of the apparatus. For example, if the amount of light emitted by the light emitting means increases and the amount of received light changes accordingly, it is considered that the light emitted with the lid closed is incident on the light receiving means. If the amount of light received does not increase even if the amount of light increases, it is considered that the light emitted with the lid opened is not received. Therefore, the rate of change in the amount of received light is used as a criterion for determination. The lid opening / closing determination can be made.

  Hereinafter, embodiments according to the present invention will be described in detail. The embodiments described below are preferable specific examples for carrying out the present invention, and thus various technical limitations are made. However, the present invention is particularly limited in the following description. Unless otherwise specified, the present invention is not limited to these forms.

  FIG. 1 is an external perspective view of an embodiment according to the present invention. The banknote identification device 1 has a lid 3 attached to an upper part of a main body 2 so as to be openable and closable. A bill carry-in path is formed between the bottom surface of the main body lid portion 3 and the main body portion 2, and the loaded bill is identified by the authenticity and conveyed by a conveyance mechanism (not shown) into the main body portion 2. It is designed to be stored. A display unit 4 is disposed on the front surface of the main body unit 2 and is used for displaying a message on a liquid crystal panel or performing alarm notification by lighting an LED.

FIG. 2 shows a state in which the lid portion 3 is rotated upward to be opened. A plurality of banknote detectors (light emitting side) 10 ′, 11 ′ and (light receiving side) 10, 11 are provided in the open area of the lid 3, and the banknote detector 10 ′ emits infrared rays to generate banknotes. Is detected at the light receiving side 10. In addition, the bill detector 11 ′ detects visible light emitted from ultraviolet light-emitting ink printed on the bill surface by emitting ultraviolet rays on the light receiving side 11.
Here, the open area of the lid 3 is an area inside the apparatus that appears outside when the lid is opened. In this example, the loading path of the main body 2 and the bottom surface of the lid 3 are open to the lid. The bill detectors (light receiving side) 10 and 11 are arranged in the carry-in path of the main body 2, and the bill detectors (light emitting side) 10 ′ and 11 ′ are placed on the lid 3. Located on the bottom. Arrangement | positioning of a banknote detection part will not be specifically limited if it is the open | release area | region of a cover part, What is necessary is just to determine in consideration of the relationship of a banknote detection position, mounting space, etc.

  The banknote detection unit includes LEDs 10 ′ and 11 ′ that are light emitting means on the light emitting side, and photodiodes 10 and 11 that are light receiving means on the light receiving side. , 11 ′, the light emitted through the banknote is transmitted by the photodiodes 10 and 11, and the authenticity of the banknote is determined from the received light quantity.

  FIG. 3 shows a block diagram relating to the present embodiment. The control unit 30 is configured to receive detection signals from the first detection unit 31 and the second detection unit 32 that are banknote detection units. The first detection unit 31 and the second detection unit 32 are configured to detect either infrared rays or visible rays, and these detection signals are input to the banknote identification unit 301 and the lid open / close determination unit 302, respectively. Is done.

  The banknote identification part 301 will output a drive control signal so that it may light-emit sequentially with the predetermined light emission amount with respect to the 1st detection part 31 and the 2nd detection part 32, if the banknote conveyed in is detected. Setting data regarding the light emission amount is read from the setting table 303. And the received light amount of the 1st detection part 31 and the 2nd detection part 32 corresponding to predetermined light emission amount is received as a detection signal, and authenticity of a banknote is identified based on the detection signal and the setting value read from the setting table 304 To do.

  For example, when the detection state of the detection unit that receives visible light has changed, the lid open / close determination unit 302 sequentially applies a predetermined light emission amount to the first detection unit 31 and the second detection unit 32. A drive control signal is output so as to emit light. The drive control signal at the time of lid opening / closing determination is output twice to each detection unit, and is set to emit light with a light emission amount smaller than the drive control signal at the time of banknote identification at the first time, and at the time of banknote identification at the second time. The light emission amount is set to be larger than the drive control signal. Setting data regarding each light emission amount is read from the setting table 303.

  When the first detection unit 31 and the second detection unit 32 emit light twice, and the corresponding received light amount is input to the lid open / close determination unit 302 as a detection signal, the lid open / close determination unit 302 receives the received light amount data. While sequentially storing, a change ratio that is a ratio of a change amount of the received light amount data to a change amount of the light emission amount data of each detection unit is calculated. Then, the open / closed state of the lid is determined based on the calculated change ratio and the setting value read from the setting table 304. As described above, the lid open / close determination unit 302 corresponds to the calculation unit and the determination unit of the present invention.

  Thus, by calculating and determining the change ratio for each of the first detection unit 31 and the second detection unit 32, it is possible to make an accurate determination while minimizing the influence of light entering from the outside of the apparatus. . That is, the amount of light from the outside of the apparatus is likely to fluctuate and is not constant, so there is a possibility that a measurement error may occur in only one measurement, but if the change ratio is calculated from the difference between the two measurement results, Thus, the amount of change in the amount of received light with respect to the change in the amount of light emitted from each detector can be accurately calculated.

  An output signal based on the identification result and the determination result is transmitted from the bill recognition unit 301 and the lid open / close determination unit 302 to the display control unit 304, and the display control unit 304 displays an alarm display or an error display on the display unit 4 according to the output signal. I do.

FIG. 4 shows a flow relating to the lid open / close determination process. First, the lid open / close determining unit 302 reads data D1 to D4 related to the set light emission amount from the setting table 303 (S100), and performs light reception processing by causing the first detection unit 31 to emit light based on the data D1 (S101). Then, the received light amount data P1 from the first detector 31 is stored (S102). Next, the first detection unit 31 is caused to emit light based on the data D2 to perform light reception processing (S103), and the light reception amount data P2 from the first detection unit 31 is stored (S104). Thus, the change ratio K1 is calculated by the following equation from the two measurement results of the first detection unit 31 (S105).
K1 = (P2-P1) / (D2-D1)
Then, it is checked whether or not the change ratio K1 is out of the predetermined range (S106). If the change ratio K1 is out of the predetermined range, an alarm display process is performed on the display unit 4 assuming that the lid 3 is open. (S107). In this case, how to determine the predetermined range regarding the change ratio K1 may be determined by performing measurement in a state where the lid portion 3 is actually closed and calculating the range of the change ratio.

If the change ratio K1 is within the predetermined range in step S106, the second detection unit 32 emits light based on the data D3 to perform light reception processing (S108). Then, the received light amount data P3 from the second detector 32 is stored (S109). Next, the second detection unit 32 emits light based on the data D4 to perform light reception processing (S110), and the light reception amount data P4 from the second detection unit 32 is stored (S111). Thus, the change ratio K2 is calculated from the two measurement results of the second detection unit 32 by the following formula (S112).
K2 = (P4-P3) / (D4-D3)
Then, it is checked whether or not the change ratio K2 is out of the predetermined range (S113). If the change ratio K2 is out of the predetermined range, an alarm display process is performed on the display unit 4 assuming that the lid 3 is open. (S107). If the change ratio K2 is within the predetermined range, it is determined that the lid 3 is in a closed state, and the process ends without displaying an alarm.

As described above, since the change ratio is calculated for each using the first detection unit 31 and the second detection unit 32 and the lid opening / closing determination process is performed, the accuracy is higher than when determination is performed based on a single sensor. A high determination can be made. Moreover, since the detection part used for banknote detection is also used for opening / closing detection of the lid, it is not necessary to add a separate sensor, and the cost increase can be suppressed accordingly.
In addition, although the above embodiment demonstrated the banknote detection part as what used the transmission type sensor, even if it uses a reflection type sensor, it is possible to acquire the same effect.

It is an external appearance perspective view regarding embodiment which concerns on this invention. It is an external appearance perspective view which shows the state which the cover part opened in FIG. It is a schematic block diagram regarding this embodiment. It is a flow regarding lid open / close determination processing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Banknote identification apparatus, 2 ... Main-body part, 3 ... Cover part, 4 ... Display part, 10 ... Banknote detection part, 11 ... Banknote detection part.

Claims (3)

Based on a detection signal from a main body part, a lid part provided in the main body part so as to be openable and closable, a light receiving means and a light emitting means and disposed on the main body part or the lid part, and a detection signal from the banknote detection part A control unit for identifying bills,
The banknote detection unit is disposed in an open area of the lid, and the control unit includes a determination unit that determines an open / closed state of the lid based on a detection signal from the banknote detection unit. The banknote identification apparatus characterized by the above-mentioned.   The bill recognition device according to claim 1, wherein the light receiving means of the bill detection unit receives infrared rays and visible rays.   The control unit includes a calculation unit that calculates a change ratio of the light reception amount of the light receiving unit when the light emission amount of the light emission unit of the banknote detection unit is changed, and the determination unit is calculated by the calculation unit. The banknote identification device according to claim 1, wherein opening / closing of the lid is determined based on the change ratio.

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