JP2004145688A - Paper money identification machine and method of checking use of counterfeit bill - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper money identification machine and a counterfeit bill use checking method for accurately checking the insertion of a counterfeit bill without reducing the operation rate. <P>SOLUTION: An identification unit 1 is loaded in an automatic vending machine, a money changer or the like and is provided with a CPU 70, an identification accuracy setting switch 71, and a check setting switch 72 in order to discriminate the denominations and authenticity of a received paper money M1. A timer counter 8 for counting the time elapsed from preceding discrimination, a standard identification discrimination table 9 constituting standard discrimination reference at the time of discriminating the authenticity of the paper money M1, a high identification discrimination table 10 constituting discrimination reference higher than the standard discrimination reference, and a check counting counter 11 are connected to the CPU 70. When the check setting switch 72 is kept ON, a mode is automatically transited to either one of a counterfeit bill check mode and a non-check mode in accordance with the authenticity discrimination result of the inserted paper money M1 and the discrimination accuracy can be switched. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bill discriminating machine for checking an inserted bill for discriminating elements and discriminating the authenticity thereof, and a method for suppressing counterfeit bills. Related to identification machines.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a bill validator is mounted on a vending machine, a money changer, or the like, and is used to determine a denomination and authenticity of a accepted bill.
[0003]
FIG. 3 is a block diagram showing an example of a conventional bill validator.
The identification unit 1 includes an insertion slot 2 for receiving the bill M1, a transport roller 4 disposed at a plurality of locations in the transport path 3, an identification sensor 5 for checking each identification element from the bill M1, and temporarily receiving the received bill M2. It is provided with a bill storage unit 6 for storing. The bill M <b> 1 inserted into the insertion slot 2 is carried into the inside by the transport roller 4 provided in the transport path 3, and is held in the bill storage unit 6 if it is determined that the bill is genuine when passing through the identification sensor 5.
[0004]
Further, the identification unit 1 has a central processing unit (CPU) 70 and an identification accuracy setting switch 71 for performing the denomination determination and the authenticity determination while the banknote M1 passes through the transport path 3. A board 7 is built in, and the control board 7 controls the bill identification control.
[0005]
The CPU 70 of the identification unit 1 includes a plurality of identification determination tables 9 and 10 having different thresholds according to the identification accuracy. For example, one of the standard identification determination and the high identification determination is selected to determine whether the identification is true or false. Done. This is because, as described in Patent Document 1 described below, it is necessary to set the identification accuracy to be different depending on the purpose of processing the bill in the bill processing apparatus.
[0006]
In a vending machine or the like provided with such an identification unit 1, when the bill M1 passes through the transport path 3, the bill is recognized by an identification sensor 5 such as a transmissive or reflective optical sensor or a magnetic sensor disposed therein. The identification data (authentication data) such as magnetic data, denomination data, number data, and color data of M1 is read, and the authenticity of the bill M1 is determined based on the data. That is, first, the central processing unit (CPU) 70 determines the insertion direction and the denomination of the inserted bill M1, and its authenticity. Then, the authenticity determination data from the bill M1 is compared with the data in the identification determination table 9 or 10 selected according to the determined insertion direction and denomination, and the authenticity is determined, and the authenticity is determined. Only when it is determined that the product is sold, the sale of the product is executed. A method of comparing the authenticity determination data with all the identification determination tables 9 and 10 and determining a genuine bill when the data matches any one of the tables, and further determining the denomination and the insertion direction. There is also.
[0007]
By the way, recently, devices for high-precision color printing and color copying have become widespread, so that fake bills intended for fraudulent products and change from vending machines are easily created. Therefore, according to another patent document 2, an attempt is made to reduce the damage to the vending machine itself by providing a control means for changing the currency identification level or the currency acceptance level and performing illegal input / output by fake money or the like. Was also made.
[0008]
[Patent Document 1]
JP-A-1-196690 [Patent Document 2]
JP-A-2002-74476 (paragraph number [0044], FIG. 5)
[0009]
[Problems to be solved by the invention]
As described above, the conventional bill validator performs switching of the recognition accuracy in accordance with a change in the bill processing purpose, or the recognition accuracy based on an artificial change factor such as a detection result of unauthorized input / output. In this case, the identification accuracy is switched by any one of the switching methods.
[0010]
For this reason, in the former, if an attempt is made to deal with a fake bill with identification accuracy fixed according to the bill processing purpose, once the identification accuracy of the bill identification machine is known, intentionally precise accuracy is determined according to the identification machine. There has been a problem that it is possible to prepare a fake bill, and it is not possible to suppress the fake bill exercise (Patent Document 1).
[0011]
However, if the recognition accuracy of the bill validator is set to be uniformly high, even regular bills cannot be distinguished from dirty bills and the like, and the operating efficiency of vending machines and the like will be reduced. Therefore, as in the latter case, even if the acceptance accuracy of the bill validator can be reset based on the factors of artificial changes, the appropriate identification accuracy is selected and the fake bill is selected without lowering the operating efficiency. It was extremely difficult to suppress exercise (Patent Document 2).
[0012]
An object of the present invention is to provide a bill validator and a fake bill exercise suppression method that can accurately suppress falsification without lowering the operation rate.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, there is provided a bill validator for checking an identification element of an inserted bill and determining the authenticity thereof. This bill discriminating machine reads predetermined information from the bill, and counts the elapsed time from the previous discrimination time each time the bill information discriminating means discriminates between the bill and the bill by the bill information discriminating means. A mode for selecting one of a plurality of discrimination criteria based on the clocking content of the clocking unit and the result of the preceding authenticity discrimination and switching the discrimination accuracy when the billing information is discriminated by the bill information discriminating unit. Switching means.
[0014]
In this bill validator, the identification accuracy is automatically changed according to the identification result of the inserted bill, so that the identification accuracy of the bill validator can be set appropriately according to the situation.
[0015]
Further, according to the forgery bill exercise suppression method using the bill validator according to the first aspect of the present invention, when bills that are not determined to be genuine bills are inserted N times (N is a natural number) consecutively, the identification precision is increased. And a return to the standard accuracy again after a lapse of a predetermined time from the insertion of the fake bill.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of the bill validator according to the present invention.
[0017]
The identification unit 1 is mounted on a vending machine or a change machine, etc., and performs denomination judgment and authenticity judgment of the accepted banknote M1. As in the conventional apparatus shown in FIG. The insertion slot 2 for receiving, the transport rollers 4 arranged at a plurality of locations in the transport path 3, the identification sensor 5 for checking each identification element from the bill M1, the bill storage unit 6 for temporarily storing the received bill M2, and the like. Have. The bill M <b> 1 inserted into the insertion slot 2 is carried into the inside by the transport roller 4 provided in the transport path 3, and is held in the bill storage unit 6 if it is determined that the bill is genuine when passing through the identification sensor 5.
[0018]
In addition, the identification unit 1 includes a central processing unit (CPU) 70, an identification accuracy setting switch 71, and a central processing unit (CPU) 70 for performing the denomination determination and the authenticity determination of the banknote M1 while the banknote M1 passes through the transport path 3. A control panel 7 having a deterrence setting switch 72 is built in, and the control panel 7 controls bill identification control.
[0019]
Further, the control panel 7 includes a time counting timer counter 8 for counting the elapsed time from the previous discrimination every time the CPU 70 discriminates a fake bill, a standard discrimination judgment table 9 which constitutes a standard discrimination criterion when the bill M1 is authenticated. , A determination table 10 for high identification, which constitutes a higher criterion than the standard criterion, and a suppression counter 11 are provided. In addition, the control panel 7 and an external control device such as a vending machine or a money changing machine are connected by communication means (not shown) for notifying the result of the authenticity determination of the bill M1 and the like.
[0020]
The CPU 70 compares the authenticity determination data of the bill M1 with the data of the identification determination table corresponding to the determined insertion direction and denomination, and determines the authenticity. Here, when the identification accuracy setting switch 71 is turned on, the identification level is high (high identification determination), and when the identification accuracy setting switch 71 is turned off together with the suppression setting switch 72, the identification level is low (standard identification). Determination) is the same as the conventional one. However, even if the identification accuracy setting switch 71 is off, if the inhibition setting switch 72 is on, the forgery bill inhibition mode or the non-inhibition mode depends on the authenticity determination result of the banknote M1 inserted earlier. A feature of the bill validator of the present invention is that a mode switching means for switching the identification accuracy by automatically making a transition to either of the above is provided.
[0021]
Note that FIG. 1 illustrates the bill validator in a state where the identification accuracy setting switch 71 is turned on and the suppression setting switch 72 is turned off.
Next, the operation of the above-described bill validator will be described. FIG. 2 is a flowchart showing the operation of the bill validator of FIG.
[0022]
Now, when a bill is detected at the insertion slot 2a, the process proceeds from step S1 for detecting bill insertion to step S2. In step S2, the banknote transport operation of feeding the banknote into the transport path 3 and the banknote data are collected by the identification sensor 5, and the denomination of the banknote and the banknote insertion direction are determined. Then, the process proceeds to step S3.
[0023]
In the initial state, the mode is set to the non-inhibition mode. In step S3, it is determined to proceed to the next step S4 or step S5 according to the ON / OFF state of the identification accuracy setting switch 71.
[0024]
That is, since the identification accuracy setting switch 71 is now in the ON state, the process proceeds to step S4 to perform the high identification determination. However, if the identification accuracy setting switch 71 is off, the process proceeds from step S5 to step S6, where the standard identification determination is performed. Note that, even if the identification accuracy setting switch 71 is off, if the suppression setting switch 72 is on, the process proceeds from step S5 to step S4 if the transition to the counterfeit bill suppression mode is made in step S14 described below. Is used to make a high identification determination.
[0025]
When the process proceeds to step S6, the process proceeds to step S7 based on the result of the standard identification determination. In step S7, after the determination of the result of the identification is performed, the process proceeds to step S8 or S9.
[0026]
If it is determined in step S7 that the identification result is acceptable, the process proceeds to step S8. If the suppression setting switch 72 is on at that time, the process proceeds from step S8 to step S10 to cancel the counterfeit bill suppression mode, and the suppression counter 11 Is cleared, and the process proceeds to step S11. In this step S11, a payment or refund instruction is awaited, and based on an instruction from the communication means for notifying the external control device of the authenticity result, a collection operation or a refund operation according to the result of selling the product such as a vending machine is performed. Be executed.
[0027]
If the identification result is determined to be rejected in step S7, the process proceeds to step S9. If the inhibition setting switch 72 is ON at this time, the process proceeds from step S9 to step S12, where +1 is added to the contents of the inhibition counter 11, and the process proceeds to step S13. Here, if the count value of the inhibition counter 11 is 5 or more, the process proceeds from step S13 to step S14. In step S14, the mode is shifted to the counterfeit bill inhibition mode, and the timer operation of the timer counter 8 is started.
[0028]
As described above, when the identification accuracy setting switch 71 is off and the suppression setting switch 72 is set on, if the mode at that time is the forgery bill suppression mode, the high identification determination is performed in the non-suppression mode. If so, the standard identification determination is performed. However, when the identification accuracy setting switch 71 is set to ON, the high identification determination is performed in step S4 regardless of whether or not the mode has shifted to the counterfeit bill suppression mode.
[0029]
Based on the determination result in step S4, in step S15, a pass / fail determination of the identification result is performed, and the process proceeds to either step S8 or step S16. In step S16, the inserted bill is returned as a fake bill or an unidentifiable bill.
[0030]
Thereafter, when a new bill is inserted following the previous bill insertion, if the discrimination result is a pass bill, the operations from step S1 to step S11 are executed in the above-described procedure, and the discrimination is performed. If the result is a rejected banknote, the operation up to step S16 is executed. In addition, at the timing when there is no insertion of a bill, the operations shown in Step S1 to Step S17 to Step S19 are executed. That is, in step S14 after the authenticity determination of the banknote M1 inserted earlier, the banknote has transitioned to the counterfeit bill inhibition mode (step S17), and 30 minutes or more have elapsed since the transition (step S18). In step (19), the process proceeds to step S19, in which the counterfeit bill suppression mode is released, and the timer operation of the timer counter 8 is stopped.
[0031]
As described above, in the above-described bill validator, when the inserted bill is determined to be a genuine bill in the standard identification determination in step S6, the process proceeds from step S7 to S8, and if the inhibition setting switch 72 is on, Then, the counterfeit bill inhibition mode set in step S14 is released, and the contents of the inhibition counter 11 are also cleared (step S10). If the counterfeit bill is determined in step S6, the content of the inhibition counter 11 is incremented by +1 in step S12, so that when the counterfeit bill is inserted five times consecutively, the mode is switched to the counterfeit bill suppression mode. After that, a high identification determination is performed.
[0032]
That is, when the discrimination accuracy setting switch 71 is off and the suppression setting switch 72 is on, the acceptance accuracy of the bill is automatically switched to the inhibition mode according to the discrimination situation of the preceding bill. Continuous use of counterfeit bills in anticipation of identification accuracy can be reliably prevented. Therefore, by determining the identification accuracy by the standard identification determination, dirty bills and the like can be accepted as long as they are genuine bills, so that the insertion of fake bills can be accurately suppressed without lowering the operating rate of vending machines and the like. . Further, by turning on the identification accuracy setting switch 71, the identification accuracy of the banknote can be set uniformly high.
[0033]
In addition, here, two types of determination criteria used for the true / false determination in the CPU 70 are the standard identification determination table 9 and the high identification determination table 10, but it is also possible to use two or more types of determination criteria. . In the above description, the limit number of times for exercising the fake bill is set to five times, but the number can be arbitrarily changed to less than five times or more than five times. Further, it is needless to say that the limitation of the elapsed time until returning to the standard accuracy is not limited to the above-mentioned 30 minutes.
[0034]
In the above-described embodiment, the inhibition mode is canceled when one genuine bill is accepted (step S10). However, in this step S10, the contents of the inhibition counter 11 are only cleared. According to the number of accepted genuine bills thereafter, for example, when five genuine bills are continuously inserted, the inhibition mode can be released.
[0035]
【The invention's effect】
As described above, according to the bill validator according to the present invention, when the bill validator is mounted on a vending machine or a money changing machine and used to perform a denomination determination and a true / false determination of a received bill, the bill is authentic. Since the determination accuracy is automatically changed, the insertion of fake bills can be appropriately suppressed without lowering the operation rate of a vending machine or a currency exchange machine.
[0036]
Further, according to the counterfeit bill exercise suppression method using the banknote discriminator of the present invention, when banknotes that are not determined to be genuine bills are inserted N times (N is a natural number) consecutively, the identification accuracy is switched to high accuracy and the counterfeit bills are changed. Since the standard accuracy is restored again after a lapse of a predetermined time from insertion, even if the acceptance accuracy of the bill validator is set based on artificial factors, for example, by using the identification accuracy setting switch, etc. By selecting an appropriate identification accuracy, it is possible to suppress counterfeit bill exercise.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a bill validator according to the present invention.
FIG. 2 is a flowchart showing the operation of the bill validator of FIG. 1;
FIG. 3 is a block diagram showing an example of a conventional bill validator.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 identification unit 2 insertion slot 3 transport path 4 transport roller 5 identification sensor 6 bill storage unit 7 control panel 8 clock timer counter 9 standard identification determination table 10 high identification determination table 11 inhibition count counter 70 central processing unit (CPU)
71 Identification accuracy setting switch 72 Suppression setting switch

Claims (4)

In the bill validator to check the identification element of the inserted bill and determine its authenticity,
Reading predetermined information from the bill, bill information discriminating means for discriminating the authenticity,
Each time the bill information discriminating means discriminates a fake bill, a timer means for counting the elapsed time from the previous discrimination time,
At the time of authenticity judgment by the bill information discriminating means, a mode switching means for selecting any one of a plurality of discrimination criteria based on the result of the preceding authenticity discrimination and the clocking content of the clocking means and switching its identification accuracy,
A bill validator characterized by comprising: 2. The mode switching device according to claim 1, wherein the mode switching unit includes a suppression setting switch for setting a transition to a counterfeit bill suppression mode and a non-inhibition mode in accordance with a result of authenticity determination of the inserted bill. Banknote recognition machine. 2. The bill validator according to claim 1, further comprising communication means for notifying an external control device of the authenticity result determined by said bill information determining means. In the method for suppressing counterfeit bills using the bill validator according to claim 1,
When bills that are not determined to be genuine bills are inserted N times (N is a natural number) consecutively, the identification accuracy is switched to high accuracy, and is returned to the standard accuracy again after a lapse of a predetermined time from the insertion of the fake bill. How to suppress counterfeit bill exercise.

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