JP2003256902A - Coin discrimination device for batch charging type coin processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coin discrimination device built in a batch charging type coin processor and capable of suppressing discrimination errors to be generated by the charge of illegal false coins and preventing the reduction of a passage rate in normal operation. <P>SOLUTION: The coin discrimination device built in the batch charging type coin processor and having a discrimination means for discriminating the sort of each coin by judging whether each of sensor signals outputted when coins collectively received from a slit and successively delivered one by one to pass is included in a prescribed coin sort judging range (judging frame) or not is provided with a control means for narrowing the prescribed coin sort judging range corresponding to the coin of which sort is to be discriminated under conditions that the number of sorts of coins discriminated up to now in a transaction concerned is a prescribed number or less, a rejected coin is included in discrimination results for the prescribed number of coins discriminated lately, the passage rate of coins discriminated up to now is a prescribed value or less, and dispersion calculated from the featured values of coins discriminated out of the coins collectively charged is a prescribed value or less. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coin discriminating apparatus for a batch-insertion type coin processing machine capable of depositing a large amount of coins in a single transaction, and in particular, a judgment frame used for discriminating coins can be changed during a transaction. The present invention relates to a coin identifying device having a function of

[0002]

2. Description of the Related Art Generally, in a coin discriminating apparatus mounted on a coin processing machine such as a depositing machine or a counting machine, the diameter and the material of the coin are determined by the sensor output of magnetic or optical or both or the read image of the coin. Features such as holes, knurls, colors, thicknesses, patterns, and unevenness are detected as identification elements, and the coins are identified by determining the denomination and authenticity based on the detection information. Then, the authenticity of the coin is determined by, for example, whether or not the sensor output is within the preset normal coin determination frame. In such a coin identifying device,
If the ability to exclude similar foreign coins or counterfeit coins is raised too much, normal coins may be mistakenly discriminated from counterfeit coins and rejected. The judgment frame is set wider. That is, the flow state of coins and the surrounding environment (temperature / humidity fluctuation),
In order to avoid misidentification caused by temperature rise of coins, wear, deformation, dirt of coins, etc., the acceptance of normal coins is given priority, and the judgment frame is set to a state where the rejection performance of counterfeit coins is slightly low. There is.

However, if the judgment frame used for the judgment elements such as authenticity is widened, when a large amount of counterfeit coins within the judgment frame are inserted and used, even a coin of a smaller amount than a bill is damaged. There is a problem that the amount becomes large and the effect of preventing and deterring crime becomes low. As a technique for dealing with this, for example, as disclosed in Japanese Patent Laid-Open No. 2000-348232, there is a technique in which a determination frame for determining whether or not a normal coin is variable is not fixed but variable.

According to the above-mentioned publication, when the counterfeit coins are accepted, the judgment frame for normal coins (normal coin judgment range) is automatically narrowed to reduce the passage rate of counterfeit coins inserted thereafter. I am trying to let you. And then
The above determination frame is automatically restored when a predetermined number of normal coins are continuously received. That is, alteration 50
When a counterfeit coin such as a 0 won coin is detected, the judgment frame is narrowed, and the ability to eliminate counterfeit coins that are subsequently inserted is increased to keep the damage low. Further, in this publication, for example, the judgment frame is narrowed stepwise according to the number of features of the counterfeit coin extracted based on the output of the unevenness sensor, or the judgment frame is automatically narrowed at night. It is described to do.

Further, the one disclosed in Japanese Patent Laid-Open No. 2001-175935 stores, for example, a normal coin stored after a counterfeit coin similar to a 500-yen coin is put into an automatic vending machine, and then the product purchase is stopped. The following technical matters are described as "problem" to prevent damages caused by non-sale input refunds such as fraudulent refunds while reducing the impact on general customers. For example, every time the coins that are not sold and returned as described above are refunded (non-sale refund), by gradually switching the maximum number of coins for 500 yen coins, you can change the fraud. Prevent damage caused by. Then, after the settlement other than the above-mentioned non-sale input refund is performed, it is possible to reduce the impact on general consumers by returning the maximum accepted number of each stage to the maximum accepted number of the initial stage. Have been described.

[0006]

[Problems to be solved by the invention] By the way, European banks have not advanced online, so the cash brought in by a customer is put into a lobby deposit machine to be counted and deposited, and the denomination, the number and the amount of money. Receive the receipt with the
I take it to the counter and ask Teller to deposit my money and keep a book. Therefore, since it is not possible to identify who has inserted which coin into the depositing machine, there is a situation in which even a counterfeiter of the coin cannot trace the coin. Also, since January 1, 2002, currencies of European countries have been integrated into the new currency Euro, but eight types of euro coins have one side common to all euro participating countries and the other side has a unique design for each country, The coins, though integrated, have a wide variety of designs. Therefore, it is unclear what kind of counterfeit coins will be brought into the new currency Euro in the future, and it is necessary for the euro coin processing machine to strengthen the circulation of mass counterfeit coins by counterfeit groups, deterrence of crimes, and strengthen crackdowns. is there.

In the above-mentioned Japanese Unexamined Patent Publication No. 2000-348232, the judgment frame used for the judgment element such as authenticity is set relatively wide, and when the counterfeit coin is accepted, it is narrowed or not sold. Every time there is a refund, the maximum number of accepted coins is gradually reduced to minimize the damage caused by counterfeit coins. However, in the one described in this publication, the operating condition for changing the judgment frame is that the counteracting counterfeit coin is regarded as rejected coin and the rejected coin is detected. Even when (normal coins rejected due to abrasion or dirt of coins) are thrown in, the judgment frame is unconditionally narrowed, and misidentification of normal coins as counterfeit coins increases. In other words, even for people who used normal coins that are misidentified or who used them without knowing that they were counterfeit coins, the processing would be the same as for criminals who maliciously used counterfeit coins, unnecessarily sacrificing the passing rate. There is a possibility that it will end up.
Further, even in the one disclosed in Japanese Patent Laid-Open No. 2001-175935, there is an effect that damage can be suppressed when a fraud occurred in a vending machine, but the maximum number of coins accepted is unnecessarily increased. You may limit it. Further, in any of the official gazettes, a coin having a device designed not only to prevent damage by counterfeit coins but also to strengthen criminal enforcement such as identification of a criminal, tracking of a forgery group, and arrest. It is desirable that a processor be realized.

The present invention has been made under the circumstances as described above, and an object of the present invention is to prevent misidentification caused by the insertion of malicious counterfeit coins.
(EN) It is intended to provide a coin discriminating device for a batch-insertion type coin processing machine capable of preventing a reduction in the passing rate in normal operation. Another object of the present invention is to provide a coin discriminating device for a batch-insertion type coin processing machine capable of strengthening criminal enforcement such as arresting a current criminal offense.

[0009]

[MEANS FOR SOLVING THE PROBLEMS] The present invention is
A coin type is received in a batch at the slot, and when the coins sequentially separated and fed out one by one pass, the sensor signal output is within the predetermined denomination judgment range provided for each denomination The present invention relates to a coin identifying device of a batch-insertion type coin processing machine that has an identifying means for identifying or counting the number of coins for each denomination, and the above object of the present invention is for each coin identified in the transaction. Identification result log means for storing the identification result of, the denomination number storage means for updating and storing the denomination number of coins identified in the transaction each time a new denomination is identified, and the identification result. A passing rate calculating means for calculating a passing rate of coins based on the identification result stored in the log means, a characteristic amount of coins identified in the batch-inserted coins, and a variation for calculating the degree of variation of these. Degree calculation means The latest identification result temporary log means for storing the latest identification result of whether the predetermined number of coins is the rejected coin or the normal coin, and the denomination number storage means stores the result. The number of denominations of coins present is less than or equal to a predetermined number, a predetermined number of latest identification results stored in the latest identification result temporary log means include rejected coins, and the passing rate is less than or equal to a predetermined value, and This is achieved by including control means for narrowing the predetermined denomination determination range corresponding to the corresponding identification denomination coin, provided that the variation degree calculated by the variation degree calculating means is equal to or less than a predetermined value.

Further, even if the control means once narrows the denomination determination range, the identification processing is continued, and the number of denominations of coins stored in the denomination number storage means is below a predetermined number. A predetermined number of latest identification results stored in the latest identification result temporary log means include at least one reject coin, the passing rate is equal to or less than a predetermined value, and the variation degree calculation means calculates the reject rate. Further narrowing the predetermined denomination determination range corresponding to the corresponding identification denomination coin, provided that the degree of variation is less than or equal to a predetermined value; even if the control means once narrows the denomination determination range. While continuing the identification process, the number of denominations of coins stored in the denomination number storage means exceeds a predetermined number, or a predetermined number of latest identification results stored in the latest identification result temporary log means. But Is a normal coin, or the passing rate exceeds a predetermined value, or the variation degree calculated by the variation degree calculating means exceeds a predetermined value. Each is more effectively achieved by returning the range to the original range;

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In the case of counterfeit coins, one coin has a lower amount of money than a large amount of banknotes, and a small amount of money does not make a profit. Therefore, it is considered that a forger makes a large amount of counterfeit coins for use. Further, as forged coins, it is assumed that a large number of high quality and uniform coins are forged. Therefore, in the coin discriminating apparatus according to the present invention, in addition to the logic for determining the authenticity of coins, the below-described logic for determining whether or not a malicious counterfeit coin has been inserted is incorporated into a coin in one transaction. Each time each coin inserted is identified one by one, the above determination is performed, the determination result is recorded, and the determination frame used for identifying the denomination of the coin according to the determination result (denomination determination range or money). (Also called seed judgment frame) is automatically narrowed,
Control to increase the ability to remove counterfeit coins of the same denomination that are inserted in large quantities. On the other hand, in a normal reject or the like, it is not considered as a malicious insertion of counterfeit coins, and a normal denomination judgment frame is used for judgment to prevent a reduction in the passing rate.

Whether or not a malicious counterfeit coin has been inserted is determined based on a predetermined condition determined based on the identification result of coins processed up to the present time. For example,
The number of types of coins (number of denominations) that were deposited by the depositor,
Malicious counterfeit coins are inserted when the conditions that are determined based on the occurrence status of rejected coins, the passing rate of coins, and the standard deviation of the average value of features that is a measure of the variation of inserted coins are satisfied. If it is considered that the denomination judgment frame is narrowed and processing is continued, and if it is recognized that malicious malicious counterfeit coins have been continuously inserted, the denomination judgment frame is further narrowed and priority is given to the ability to eliminate counterfeit coins. Control.

A preferred embodiment of the present invention will be described in detail below with reference to the drawings. In the embodiments described below, a large amount of coins can be collectively received in one transaction, and a batch-insertion type coin processor having a function of counting the number of coins of each denomination or depositing the coins. As an example, the case where the present invention is applied to the batch-insertion type coin processing machine will be described as an example.

FIG. 1 is a block diagram showing an example of the structure of the main part of the coin discriminating apparatus according to the present invention. The coin identification device 10 is a device applied to a batch-insertion type coin processing machine that collectively receives coins at an input port and counts or deposits money for each denomination during a transaction. By inputting a sensor signal output when coins separated and fed out one by one sequentially, the sensor signal is input to a predetermined denomination determination range (hereinafter, referred to as a "determination frame" for each denomination). ) Has a coin discriminating means 11 for discriminating the denomination depending on whether or not it falls within the range. In the present invention, it is determined whether or not a malicious counterfeit coin has been inserted (hereinafter, referred to as “malicious counterfeit coin insertion” for convenience), and for performing variable control of the determination frame according to the determination result. The following means are provided as means.

In FIG. 1, the identification result log means 12 is
It is a means for storing identification data and identification result for each coin identified in the transaction, and as the identification data, output data of a sensor or the like (data including a read image of a coin in a device having an image reading means) is stored. . Further, the identification result is the result of identification by the coin identifying means 11, and in addition to the identification result of the denomination, the identification result of rejected coins or normal coins and the like are stored. The denomination number storage unit 13 updates and stores the denomination number of coins identified in the transaction each time a new denomination is identified by the coin identification unit 11.
3, and in this example, information indicating how many types of coins have been identified so far is stored as the number of denominations. The passing rate calculation means 14 is a means for calculating the passing rate of coins based on the identification result stored in the identification result log means 12, and in this example, it is normal for the total number of coins identified up to this time in the transaction. The rate of coins passed as coins is calculated as the passing rate.

The variation degree calculating means 15 is a means for storing the characteristic amount of the coins identified in the coins inserted in a lump and calculating the variation degree. In this example, the money of the coins identified this time. The standard deviation of the coins with respect to the average value of the characteristic amounts of the coins identified so far corresponding to the seed is calculated. Alternatively, the variance may be calculated. The latest identification result temporary log means 16 is a means for storing the identification result of whether the coins of the predetermined number and the number of the latest identified coins are reject coins or normal coins. The "rejected coins" referred to here are coins other than coins that are accepted as normal coins (coins determined to be outside the range of the denomination determination frame, coins determined to be false in the authenticity determination, etc.,
Rejected coins). The judgment frame level storage means 17 is a means for storing a plurality of judgment frames for different denominations having different ranges, the level indicating the narrow rank or the wide rank. In this example, the current judgment frame level is It is stored by denomination. The determination frame storage unit 18 is a unit that stores the determination frame of each denomination corresponding to each level, and stores the determination frame of each level set for all the denominations to be handled.

The determination frame setting control means 19 determines whether or not the coin is due to the insertion of malicious counterfeit coins every time the coin is identified, and sets the level of the determination frame of the denomination according to the determination result. However, it is a means for changing the judgment frame used for the coin identifying means 11 to the judgment frame of the level. In the present embodiment, the determination frame setting control means 19 determines the number of types of coins stored in the denomination number storage means 13, the latest identification result for the predetermined number of coins stored in the latest identification result temporary log means 1, The level of the determination frame stored in the determination frame level storage unit 17 is changed based on the information of the transmission rate calculated by the transmission rate calculation unit 14 and the variation degree calculated by the variation degree calculation unit 15. .

FIG. 2 shows an example of a batch-insertion type coin processor to which the coin discriminating apparatus having the above-mentioned means is applied, in which euro coins and old coins (old coins which are symmetrical to switch to euro coins) are processed. The example of the external appearance structure of the deposit machine 1 is shown. In FIG. 2, on the front surface of the housing of the depositing machine 1, there are a touch panel type operation display unit 1a, a receipt outlet 1b from which a receipt of deposit details is discharged, a coin slot 1c for depositing coins to be deposited, and a reject coin. Rejected coin return slot 1d, return box 1e for returning all input coins temporarily held to the depositor when the deposit process is canceled after the coins have been inserted, and the identified coins are classified by denomination A coin storage unit 1f for storing is provided.

In a depositing machine installed in a financial institution in Japan or the United States, a card of the financial institution is used to automatically transfer money to one's own account, but a depositing machine installed in a country where online is not progressing. As shown in the example of the depositing machine 1 of FIG. 2, there is no card insertion opening for inserting an ID card such as a bank card, and the depositing machine 1 mainly operates as a counting machine, and a direct deposit is made. The receipt on which the payment details for performing the above is printed is discharged from the receipt outlet 1b. That is, as described in the related art, the depositor first inserts a coin from the coin insertion slot 1c to make a deposit count, and then outputs a receipt of the deposit statement in which the number of denominations and the total amount are printed. Take it from 1b and take the receipt to the counter. At this point, the deposit process to your own account has not been performed, and the depositor completes the deposit by giving the receipt to the teller at the counter and having the deposit made to your account based on the amount of the receipt It is in the form.

By the way, the coins of the "Euro", which is a single European currency that has been in circulation in the countries of the European Union (EU) since January 1, 2002, are currently 1, 2, 5, 10 There are 8 kinds of coins totaling 20 euros, 50 euros and 1 euro and 2 euros. One side of each coin is a common design of the euro participating countries,
On the other side, each country has its own unique design. These euro coins have different materials and colors depending on their face value. For example, coins of 1, 2, 5 cents are copper, iron,
Copper clad coins are used, and coins of 10, 20 and 50 cents are made of Nortic gold. Also 1, 2
Euro coins use a so-called "bicolor coin" structure, in which different metals are used for the core part of the central part and the ring part of the peripheral part.

The coin discriminating apparatus according to the present embodiment is a coin discriminating sensor such as a "bicolor coin" such as 1, 2 euro or a "clad coin" in which two or more kinds of metals are laminated in a sandwich form. At least a metal piece detection sensor capable of surely identifying a coin having a composite material structure is provided.

The metal piece detection sensor is not limited to the entire surface and cross section of a metal piece such as a coin due to the difference in frequency.
A signal corresponding to the internal material can be obtained.
A reflection detection type magnetic sensor disposed on the sliding surface side of the coin transport path, and two symmetrical transmission detection sensors disposed so as to sandwich one end and the other end of the transport path. It is composed of a magnetic sensor. In the coin discriminating apparatus, excitation signals of a plurality of frequencies (for example, composite excitation signals of low frequency, medium frequency and high frequency) are supplied to the primary side coils of the reflection detection type sensor and the two transmission detection type sensors. The coins passing through the transport path are identified based on the output of the secondary coil of each sensor.

As an example, in the case of a bi-color coin such as a 1-euro coin or a 2-euro coin, the electrical interruption at the joint portion between the core portion and the ring portion is recognized as a surface current increase / decrease signal and is preliminarily classified by denomination. Identify by comparing with the set judgment frame. In addition, in the case of clad coins, in addition to the excitation frequency at which the characteristic signal of the entire coin and the surface material of the coin are obtained, the frequency of the characteristic signal of the material on the surface of the coin or near the center is used, and the characteristic amount such as the attenuation rate at each frequency Is compared with a predetermined judgment frame so as to be identified.

As described above, in the coin discriminating means 11, a signal output from each coin discriminating sensor including the above-mentioned metal piece detecting sensor when the coin passes is provided in advance for each coin denomination. The denomination of the coin is identified, and the authenticity of the coin is identified based on whether or not the coin falls within the determination frame. The term "judgment frame" used here refers to the denomination judgment range, which is the criterion for denomination of coins, and each characteristic amount of the reference coin of each denomination (for example, the material and material thickness that appear in the waveform of the output signal of each sensor). , Features such as diameter, holes, serrations, irregularities,
It is set according to any of the feature quantities such as patterns and colors obtained from the read image, or the feature quantity of the combination thereof. For example, the sensor output when a coin passes is the relevant denomination (or true or false). The denomination is identified by whether or not the denomination is within the range of the determination frame (one or more determination frames) of (including denomination). In the form in which the final authenticity determination is performed after the denomination determination, it is a “true” (normal coin) coin by the authenticity discrimination processing according to the type of the coin after determining the denomination. Or "false" (rejected coin) coins are determined.

The judgment frame is provided stepwise so that it can be changed in a plurality of steps such that the width thereof is gradually narrowed or widened. In the judgment frame setting control means 19,
The level of the determination frame of the denomination set by the logic described later is changed. The “level of the determination frame (also referred to as the determination frame level)” in the present embodiment refers to a level of narrowness with respect to the standard denomination determination range. And
The standard level of this case frame is called "normal level",
At the time of product shipment, a standard level judgment frame is preset for each denomination, and when a coin processing machine is introduced, the setting can be easily changed according to the environment of the installation site and the request of the operating company. Then, in the judgment frame level storage means 17,
The normal level is stored as the level of the current judgment frame.

An example of the operation relating to the level change control of the judgment frame in the present invention having the above-mentioned structure will be described with reference to the flowchart of FIG. It should be noted that the figure shows an operation example relating to change control of the judgment frame in one transaction of the depositor.

First, the coins inserted from the coin insertion slot 1c of the depositing machine are temporarily stored in the storage section, and then separated and fed out in a single line in the coin passage, and the coin identification sensors are provided. The sheets are sequentially conveyed one by one to the provided identification section (step S1). In the coin identifying means 11, the judgment frame (denomination judgment range) of the level (the initial level is the standard level)
Is read from the storage unit of the judgment frame level storage unit 17, and the coin denomination of the coin is determined depending on whether or not the signal of the coin identification sensor output when the coin passes is within the judgment frame provided for the coin type. The identification data (the output data of the sensor, etc.) of the coins and the identification result (the identification result of the rejected coin, the normal coin, the denomination, etc.) are stored in the identification result log means 12, and the coins collectively inserted are Each time the sheets are identified one by one, the following processes (1) to (3) are carried out based on the following idea, and the information as the element of the condition for changing the level of the judgment frame is obtained and stored (step S2).

In the case of malicious insertion of counterfeit coins, it is considered that among the coins that have been inserted in a batch, normal coins are not inserted at all or the amount thereof is small, and it is often the case that a large amount of coins of the same type are inserted. To be Also, in the case of normal reject coins, that is, when normal coins become reject coins due to wear, deformation, dirt, etc. of coins, the amount is small and the overall passing rate is considered to be high. In the case of the introduction of counterfeit coins, the passing rate is considered to be lower than that of rejected coins as described above. Furthermore, in the case of counterfeit coins, it is assumed that high quality and uniform coins will be produced in large quantities by forging, and it is considered that there is little or no variation in the characteristic amount of coins (counterfeit coins of uniform material etc.). . In the present invention, the following processes (1) to (4) are performed in real time for each coin based on such an idea, and information as a factor of the condition for changing the level of the judgment frame is obtained and stored.

It is determined whether or not the denomination of the coin is different from the denomination of the coin identified so far, and if different, the denomination number indicating how many types of coins are identified so far is set. It is updated and stored in the denomination number storage means 13. In the judgment frame setting control means 19, the first condition for narrowing the judgment frame is that the number of coins inserted in a batch is small, for example, that the number of denominations is a predetermined number (a set value of an integer of 1 or more) or less. And The latest identification result indicating whether each of the predetermined number of predetermined coins and the latest identified coins (n coins in the past including the current coin identified this time) is rejected or normal The result is temporarily stored in the log means 16.
The determination frame setting control means 19 reads the latest identification result stored in the latest identification result temporary log means 16 and confirms that there is at least one reject coin in the most recently identified predetermined number of identification results. This is the second condition for narrowing. By the passage rate calculating means 14, the identification result log means 12
Based on the identification result stored in, the passing rate of the coins identified so far (the ratio of coins passed as normal coins to the total number of identified coins) is calculated. In the judgment frame setting control means 18, for example, the passage rate is a predetermined value (for example, 80%).
%) Or less is the third condition for narrowing the judgment frame. The variation degree calculating means 14 stores the feature amount of the coins identified in the batch-inserted coins, and calculates the standard deviation of the coins with respect to the average feature amount value of the coins of the denomination so far. In the judgment frame setting control means 19, for example, the standard deviation being equal to or less than a predetermined value is a fourth condition for narrowing the judgment frame.

Then, in the judgment frame setting control means 19, the predetermined condition (in this example, the first
~ All of the fourth conditions) are determined (step S3), and if the conditions are satisfied, it is recognized as a malicious forgery coin insertion, and further malicious forgery is performed after changing the level of the determination frame. A counter i indicating how many coins (in this example, consecutive coins) has been inserted is incremented by 1 (step S4). Subsequently, it is determined whether or not the level of the current judgment frame is the normal level (step S5). If the level is the normal level, the judgment frame level is increased by 1 and the judgment frame used in the identification processing of the above step S2 is the normal level. It is set so as to be narrowed by one step (step S7), and the counter i is cleared (step S7).
8) Then, the process proceeds to the step S2, and the processing of the next coins inserted in a batch is continued. If the current level of the judgment frame is not the normal level in step S5, that is, if the judgment frame is already narrowed, it is judged whether or not the value of the counter i has reached a predetermined number (step S6). When the predetermined number is reached, the determination frame used in the identification processing in step S2 is set to be narrowed by one step from the current level (step S7), the counter i is cleared (step S8), and the step S2 is performed. And the processing of the next coin that has been batch-inserted is continued. In this way, when it is determined that malicious malicious counterfeit coins have been inserted, the judgment conditions for the denominations are made stricter, and when the determination of malicious malicious counterfeit coins is continuously made under stricter judgment conditions, the judgment conditions are made more severe. Control.

On the other hand, in step S3, when the predetermined condition is not satisfied (in this example, when any one of the first to fourth conditions is not satisfied), the narrowed judgment frame is judged as the normal level. The setting is made to return to the frame (the initial denomination determination range) (step S9), the counter i is cleared (step S10), the process proceeds to the step S2, and the processing of the next coin inserted in batch is continued. .

Next, a specific operation example when coins including counterfeit coins are collectively inserted and the transition of processing for each coin will be described with reference to the flowchart of FIG. In addition,
In the flow of FIG. 4, as the conditions for narrowing the judgment frame, the above-mentioned first to fourth conditions are used, the set value of the number of denominations in the first condition = 1, and the number of the latest identified number in the second condition. Setting value (the setting value of the number of sheets identified in the past) = 5, and the setting value of the passing rate under the third condition = 80%. Further, the identification result to be logged in step S103 in FIG. 4 includes the identification result log unit 12 and the denomination number storage unit 1 described above.
3, all of the data stored by the variation degree calculation means 15 and the latest identification result temporary log means 16 respectively.

First, as the first concrete example,
A case will be described in which eight coins of the same denomination that satisfy all of the fourth conditions and that are determined to be false coins (reject coins) enter the identification unit in succession.

In the coin discriminating means 11 of the coin discriminating apparatus, the discriminating frame level (initial level is the normal level) stored in the discriminating frame level storing means 17 (stored data 2) is read (step S101), and the coin passes through. Based on the information of the sensor signal output at this time, the first coin is identified according to the normal level determination frame (step S102),
The identification result is logged as the storage data 3 (step S103). The judgment frame setting control means 19 reads the identification result log, and the number of types of coins (the number of denominations) of coins identified so far is one or less (step S104), and the past five coins (identified in step S102). There is at least one reject coin among the 5 most recently identified coins including this coin (step S105), and the past coin passing rate is 80% or less (step S106), and the variation degree is calculated. Standard deviation calculated by means 15 (variation degree)
Is below a predetermined value (step S107). In this example, since the condition is satisfied, it is determined that a malicious counterfeit coin has been inserted, and a counter i indicating how many consecutive counterfeit coins have entered (hereinafter referred to as a counterfeit coin continuous insertion counter i). ) Is incremented by 1 and logged as storage data 3 (step S108). Then, it is determined whether or not the current determination frame level is the normal level (steps S109 and S110), and in this example, the first level is the normal level. Therefore, the process proceeds to step S114, and this identification denomination is obtained. The judgment frame level corresponding to the coin is increased by 1, the counterfeit coin continuous insertion counter i is cleared, the judgment frame level is stored as the storage data 2, and the discrimination process of the next coin is continued.

The second counterfeit coin is discriminated in the judgment frame corresponding to the identification denomination coin with the judgment frame level increased by 1, and in the judgment of step S110 after the processing of steps S101 to S109. Since the judgment frame level has already been increased by 1 level from the normal level, the determination result is Yes, and the process proceeds to step S111. Then, after changing the level of the determination frame, it is further determined whether or not five malicious counterfeit coins have been continuously inserted (whether or not the counterfeit coin continuous insertion counter i has reached 5) (steps S111 and S112). .
In this example, since the number of counterfeit coins determined to be malicious is still two in succession, No is obtained in step S112, and the identification process of the next coin is continued.

The third to fifth sheets are similar to the above-described second sheet processing (No route in steps S101 to S111 and S112), and the sixth sheet is steps S101 to S1.
In the determination of step S112 after the processing of step 11, since there are five consecutive coins (counterfeit coin continuous insertion counter i = 5), the determination is Yes, and the process proceeds to step S113. In step S113, it is determined whether or not the level of the determination frame has been changed in the past five sheets. In this example, since the level of the determination frame has not been changed in the past five sheets from the second sheet to the sixth sheet, the determination in step S113 is No, and the determination frame level is further increased by 1 (the determination frame is further narrowed). To). Then, the counterfeit coin continuous insertion counter i is cleared, the judgment frame level is stored as the storage data 2, and the process of identifying the next coin is continued. Then, the 7th and 8th counterfeit coins (1st to 4th coins)
For coins that do not satisfy the condition (1), the identification process is performed in the determination frame that is raised by two levels, and the process of identifying the next coin is continued after the processes of steps S101 to S112.

Although the upper limit of the level is not specified, in actual operation, the judgment frame level to be narrowed is set to about 3 levels, and it is necessary to avoid excluding normal coins by narrowing the level above a predetermined level. It is preferable to set. As described above, in the coin identifying device according to the present invention, it is determined whether or not a malicious counterfeit coin has been inserted under the above conditions, and if it is determined that the coin has been inserted, the coins are continuously inserted. The judgment frame is gradually narrowed according to the number of sheets. In this example, first, the judgment frame is narrowed by the first sheet and the identification process is continued, and thereafter, after changing the level, every time five sheets are continuously thrown in, the determination is made until the upper limit is reached. Although the frame is narrowed by one level, the judgment frame is not limited to this example, and the judgment frame may be changed to the judgment frame of the level according to the input rate of malicious counterfeit coins.

Next, as a second specific example, in the case where two normal coins of different types (coins that do not satisfy any one of the above first to fourth conditions) are entered, the same as in FIG. This will be described with reference to the flowchart.

If one normalization is entered, step S
After the processing of 101 to S103, since there is only one denomination in the determination of step S104, Yes, step S1
In the judgment of 05, since there are no rejected coins out of the past five coins including the current coin, the judgment is No, the process moves to step S115, and the judgment frame level is returned to the normal level (in this example, the normal level remains unchanged). At the same time, the counterfeit coin continuous insertion counter i is cleared, and the process of identifying the next coin is continued. Then, when a different type of coin comes in on the second sheet, after the processing of steps S101 to S103, the determination in step S104 results in No because there are two types of denominations, and the process proceeds to step S115 to determine the determination frame level. Is returned to the normal level, the counterfeit coin continuous insertion counter i is cleared, and the process of identifying the next coin is continued. In this way, when it is determined that a coin that does not satisfy any of the conditions, that is, a malicious counterfeit coin is not inserted, the determination frame level is returned to the normal level and the identification process of the next coin is continued.

Finally, as a third specific example, all coins of the same type, the first coin is a normal coin, and the second coin is the above-mentioned first to first coins.
Coins that meet all of the fourth conditions and reject coins 3 to
The flow chart of FIG. 4 is similarly applied to the case where the fifth coin is a reject coin but satisfies all of the above first to fourth conditions, and the sixth to eighth coins are not reject coins. It will be described with reference to FIG.

For the first coin, steps S101 to S1
After 05 and S115, the next coin identification process is performed. The second coin, steps S101-S110, S
After the processing of 114, the determination frame level is raised by 1 and the next coin identification processing is performed. The third, fourth, and fifth coins are subjected to identification processing in the judgment frame in which the level is raised by 1, and step S10
After the processes of 1 to S112 (No in S112), the next coin identification process is performed. The sixth coin is step S10.
After the processes of 1 to S105, in the determination of step S106, since 5 out of 6 sheets have passed, the passing ratio exceeds 80%, so the result is No, the process moves to step S115 to return the determination frame to the normal level, and It becomes the identification processing of the coin. 7
The steps S101 to S104 are performed on the first and eighth sheets, respectively.
In the determination of step S105, the past 5
Since there is no rejected coin among the coins, the result is No, the process moves to step S115, the judgment frame is returned to the normal level, and the next coin is identified. In this way, even if the judgment frame is narrowed once, the discrimination is continued and whether the number of denominations exceeds the predetermined number, or the discrimination results of the predetermined number of coins in the past are all normal coins, or they pass. When either the rate exceeds a predetermined value or the standard deviation value exceeds a predetermined value, the narrowed judgment frame is returned to the initial judgment frame.

In the above-described embodiment, the case where the euro coin is applied to the depositing machine for processing is described as a specific example, but the coin to be processed is not limited, and the coin processing machine is also applicable. It is not limited to deposit machines. That is, the present invention can be suitably applied to all money handling machines that handle money (banknotes, coins), and to all devices that receive a small amount of money or a relatively small amount of money.

[0043]

As described above, according to the present invention, based on the predetermined condition (condition according to claim 1) specified according to the identification result of the coins identified so far in the transaction. Therefore, it is determined whether malicious counterfeit coins have been inserted, and if it is considered to be malicious, the denomination judgment range is narrowed. Misclassification can be suppressed, and at the same time, it is possible to prevent a reduction in the pass rate in normal operation. Further, even with a coin processing machine that does not use a card, it is possible to infer a criminal activity during the transaction, so that it is possible to strengthen criminal enforcement such as arresting a criminal's current crime.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a configuration of a main part of a coin identifying device according to the present invention.

FIG. 2 is a perspective view showing an example of an external configuration of a batch-insertion type coin processing machine according to the present invention.

FIG. 3 is a flowchart for explaining an operation example related to change control of a determination frame in the present invention.

FIG. 4 is a flowchart for explaining a specific operation example related to change control of the determination frame in the present invention and a transition of processing for each coin.

[Explanation of symbols]

1 Batch type coin handling machine (depositing machine) 1a Operation display section 1b Receipt exit 1c coin slot 1d reject coin return slot 1e Return box 1f coin storage 10 coin identification device 11 Coin identification means 12 Identification result log means 13 Money number storage means 14 Passage rate calculation means 15 Variation degree calculation means 16 Latest identification result temporary log means 17 Judgment Frame Level Storage Means 18 Judgment Frame Storage Means 19 Judgment frame setting control means

Continued front page    (72) Inventor Toshiyuki Hokita             Gross 1-3-1, Shitemeno, Himeji City, Hyogo Prefecture             Lee Industry Co., Ltd. (72) Inventor Yumiko Sugitani             Gross 1-3-1, Shitemeno, Himeji City, Hyogo Prefecture             Lee Industry Co., Ltd. (72) Inventor Naoki Oka             Gross 1-3-1, Shitemeno, Himeji City, Hyogo Prefecture             Lee Industry Co., Ltd. F-term (reference) 3E002 CA03 CA04 DA02 EA05

Claims (3)

[Claims] 1. A sensor signal output when a coin is batch-received into a slot at the time of a transaction and the coins sequentially separated and fed out one by one are within a predetermined denomination determination range provided for each denomination. In the coin identification device of the batch-insertion type coin processing machine, which has an identification means for identifying the denomination depending on whether or not to enter, and performs the counting processing or the deposit processing for each denomination, the identification for each coin identified in the transaction Identification result log means for storing the result, denomination number storage means for updating and storing the denomination number of coins identified in the transaction each time a new denomination is identified, and the identification result log means. The passage rate calculation means for calculating the passage rate of coins based on the identification result stored in the above, and the variation degree calculation for storing the characteristic amount of the coins identified in the batch-inserted coins and for calculating the variation degree thereof Means and The latest identification result temporary log means for storing the latest identification result of whether the rejected coins or normal coins are the predetermined number of coins defined for each, and the newly identified number of coins,
The number of denominations of coins stored in the denomination number storage means is equal to or less than a predetermined number, and a predetermined number of latest identification results stored in the latest identification result temporary log means include rejected coins, and Control means for narrowing the predetermined denomination determination range corresponding to the corresponding identification denomination coin, provided that the passing rate is less than or equal to a predetermined value and the variation degree calculated by the variation degree calculating means is less than or equal to a predetermined value. A coin discriminating device for a batch-insertion type coin processing machine, comprising: 2. The control means continues the identification processing even when the denomination determination range is once narrowed, and the coin denomination number stored in the denomination number storage means is equal to or less than a predetermined number. A predetermined number of latest identification results stored in the latest identification result temporary log means include at least one reject coin, the passing rate is equal to or less than a predetermined value, and the variation degree calculation means calculates the reject rate. The coin of the batch-insertion type coin processing machine according to claim 1, wherein the predetermined denomination determination range corresponding to the corresponding identification denomination coin is further narrowed on condition that the variation degree is equal to or less than a predetermined value. Identification device. 3. The control means continues the identification process even when the denomination determination range is once narrowed, and the denomination number of coins stored in the denomination number storage means exceeds a predetermined number. Alternatively, whether all the predetermined number of latest identification results stored in the latest identification result temporary log means are normal coins, or the passing rate exceeds a predetermined value, or calculated by the variation degree calculation means. The coin-operated coin processing machine according to claim 1 or 2, wherein the narrowed denomination determination range is returned to the initial range when a condition that the degree of variation exceeds a predetermined value is satisfied. Coin identification device.