JPH079675B2 - Double feed detecting device in bill counting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention is designed to detect the presence or absence of mixed foreign bills by reading an optical pattern on the surface of a bill, and to perform counting while detecting double feed. The present invention relates to a bill counting machine.

“Prior Art” Conventionally, the applicant of the present invention has proposed a banknote counting machine of this type as Shokai 60.
-Discrimination device in banknote counting machine shown in Japanese Patent Publication No. 104979
And the "double feed detection device for banknote counting machine" shown in Japanese Patent Application No. 54-77131.

The "discrimination device in a bill counting machine" shown in Japanese Utility Model Laid-Open No. 60-104979 uses a vacuum pressure in a suction shaft that rotates while revolving, and sucks and counts bills loaded in a holder one by one. At the same time as this counting, by optically reading the surface pattern of the banknote and comparing this surface pattern with reference data, whether the banknote is a denomination different from the counting banknote (different type banknote). It is supposed to check.

Further, the "double feed detection device of the bill counting machine" shown in Japanese Patent Application No. 54-77131 is similar to the "discriminating device in the bill counting machine" shown in Japanese Utility Model Laid-Open No. 60-104979, and it uses a suction shaft to bill It is for counting while flipping, irradiating light to the substantially central position of the bill in the middle of flipping, detecting the amount of transmitted light in the bill, and comparing the detected value with the reference level, It is designed to determine whether or not double adsorption is performed.

"Problems to be Solved by the Invention" By the way, the former bill counting machine does not have a function for detecting double feeding, so double feeding of bills may be overlooked. In the bill counting machine of No. 2, it is possible to check the double feeding of bills by the double feeding detecting device, and the trouble as shown in the former does not occur.

However, in the latter bill counting machine, while it is possible to detect double feeding of bills being turned over by the suction shaft, there are the following problems.

In other words, the amount of transmitted light of the banknote differs depending on the denomination,
Since the double feed detection position is different between the front and back of the bill and the amount of transmitted light of the bill is different, it is difficult to set what value is the reference level. For example, in the case of a banknote of a specific denomination, the reference level is also constant, but if the denomination is not specified, the reference level is naturally not set, and therefore accurate double feed determination can be performed. There is a problem that you can not do it.

The present invention has been made in view of the above circumstances, and it is possible to perform highly accurate double detection by sequentially changing the reference value to be compared according to the denomination and the front and back of the bill to be flipped. It is an object of the present invention to obtain a double feed detecting device of a bill counting machine having a different type bill discriminating function.

[Means for Solving Problems] In order to achieve this object, the present invention makes a suction shaft adsorb a bill loaded in a holder and counts the bills while flipping the bills one by one. In the double feed detection device in the banknote counter configured to determine the denomination and the front and back, a light emitting element that irradiates light from a direction intersecting the banknote that has been flipped by the suction shaft, and the banknote is irradiated. A pair of light receiving elements for detecting the amount of transmitted light are provided, and a plurality of types of transmitted light detected by the light receiving element are stored in the storage means in advance so as to correspond to denominations and front and back sides, and serve as a reference. A comparing means for comparing with one of the double comparison levels and a double feeding judging means for detecting whether or not the bill has been double-fed based on the comparison result are further provided, and further it is turned off by the suction shaft. Based on the denomination data and the front and back data determined by this determination means, a plurality of types of denominations stored according to the denomination and the front and back A selection means for selecting one of the comparison levels is provided.

[Operation] According to the present invention, one of a plurality of reference data (double comparison level) to be compared with the detection data (amount of transmitted light) is selected based on the denomination and the front and back sides. New tickets in circulation)
Can be effectively detected depending on the denomination or the situation in which bills such as front and back are arranged.

Further, the double suction can be detected in consideration of the front and back of the banknote as well as the denomination, so (i) it is sufficient to provide one detection element for detecting the double suction. (In this case, naturally, it is limited to the case of detecting a new ticket having the same size), (ii) and the detection position of the light receiving element is set to an arbitrary position in the width direction or the length direction of the bill. be able to.

[Example] The present invention will be described below based on an example shown in Figs. 1 to 10.

First, the structure of the banknote counter mechanism will be described with reference to FIG. 1 to FIG. 3. In this counter mechanism, the banknote S is placed on the holder 1 and the holder 1 is horizontally swung about the axis 2 1 is moved to the counting position shown by the solid line or the standby position shown by the chain line in FIG. 1, and when the holder 1 is at the counting position, the rotary cylinder 3 is rotated counterclockwise in FIG. Meanwhile, the suction shaft 5 on the rotary cylinder 3 is rotated clockwise about the shaft 6 and a vacuum pressure is applied to the suction shaft 5 to count the banknotes S on the holder 1 one by one while counting. At the same time, it has a basic configuration in which the reflected light of a light beam applied to the surface of the banknote S from a light projector to be described later is read by a light receiver to identify the banknote.

The holder 1 is provided with a base plate 1a that supports the banknote S from the back side (the side opposite to the suction shaft 5), and the surface 1b of the base plate 1a.
Are formed in black so that the reflected light level becomes low.

The rotary cylinder 3 and the shafts 4 and 6 of the suction shaft 5 are formed in a hollow shape as shown in FIG. 3, and are connected to a suction port 9 of a vacuum pump 8 via a suction pipe line 7, By the vacuum pressure of the vacuum pump 8 acting on the banknote S through the opening 10 provided in a part of the outer circumference of the suction shaft 5,
The bill S is attracted to the suction shaft 5. A pressure sensor 11 is provided in the middle of the suction pipe line 7. The pressure sensor 11 detects whether or not the vacuum pressure in the suction pipe line 7 has risen to such an extent that a bill can be sucked. It has become so.

On the other hand, the exhaust port 12 of the vacuum pump 8 has an exhaust pipe line.
An exhaust nozzle 14 is provided at the tip of the exhaust pipe line 13 for blowing exhaust gas to the side surface of the banknote S to facilitate separation of the banknotes S from each other. A solenoid valve 16 is provided in the middle of 13 to prevent exhaust noise from being generated from the exhaust nozzle 14 by switching exhaust gas to the discharge port 15 when bills are not being counted.

A pair of position regulating pieces 5a is fixed to each of the suction shafts 5 as shown in FIGS. 1 to 3. The position restricting piece 5a is provided so as to project from the side surface of the suction shaft 5 and sandwich the opening 10 of the suction shaft 5 therebetween, and the outside air is sucked from the opening 10 to the suction shaft 5. When a bill is adsorbed, the bill is supported from the side to prevent the bill from collapsing or bending.
Then, the position regulating piece 5a thus holds the bill in which the suction shaft 5 has been suction-separated to maintain a standing state, thereby detecting whether or not the paper is double-fed (the bill is suction-separated in FIG. 1). The banknote is positioned at the position Sa).

Further, an operating piece made of a magnetic material is provided on the outer circumference of the rotary cylinder 3.
A plurality of 17 are attached, and depending on whether or not these operating pieces 17 operate the magnetic sensor 18, each suction shaft 5 is in a standby position (the opening 10 faces the bill and the inside of the suction shaft 5 is the vacuum pump 8). It is detected whether it is in a communicating position) or a starting position (a position immediately before the opening 10 faces the bill and the inside of the suction shaft 5 is shut off from the vacuum pump 8). It is like this.

In FIG. 3, reference numeral 19 is a counting motor for driving the rotary cylinder 3 via the belt 20, reference numeral 21 is a pump motor for driving the vacuum pump 8 via the belt 22, and reference numeral 23 is a holder for rotating the holder 1. Motor, code 24A and 24B
Is a holder position detection switch for detecting whether the holder 1 is in the closed position (position approaching the suction shaft 5) or in the open position (position approaching the suction shaft 5).

Further, a separator 25 is provided in the vicinity of the rotary cylinder 3, and the separator 25 is supported by a shaft 26 so as to be horizontally rotatable and is biased by a spring 27 in the counterclockwise direction in FIG. The batch solenoid 28 is operated so that it can be rotated clockwise in FIG. And
As will be described later, the separator 25 has a function of being inserted between a bill that has already been flipped and a bill that has not been flipped when a bill of a different denomination is detected, and separating the two.

Next, a stamping mechanism for stamping a confirmation stamp on a banded bundle of banknotes will be described with reference to FIG.

The reference numeral 30 in FIG. 1 denotes a seal stamp holding member provided in the holder 1, and the seal stamp holding member 30 supports the seal stamp 31 so as to be movable in the arrow (a)-(b) directions. Further, it is movably supported so as to approach and separate from the banknote S. Further, a dial 32 is provided at the base end of the holder 1, and by rotating the dial 32, the seal 31 is indicated by an arrow (a)-.
By moving in the (b) direction, the stamped portion 31a of the stamp 31 is aligned with the band B.

Further, on the base that supports the holder 1, a striking arm 34 that rotates about a shaft 33 in a horizontal plane, and a striking arm 34.
A solenoid 35 for rotating the striking arm 34 is provided. By rotating the striking arm 34 by the operation of the solenoid 35, the tip end portion of the striking arm 34 is moved to the rear end portion 31b of the seal.
Is pressed from the rear side to bring the imprinting portion 31a of the stamp 31 close to the band seal, whereby the imprint is performed on the band seal.

Next, a double feed detection mechanism for bills that are picked up by the suction shaft 5 will be described with reference to FIG.

Reference numerals 37 and 38 in FIG. 1 respectively indicate a double feed detecting lamp (light receiving element) and a light receiving element (the double feed detecting sensor is constituted by these elements), and a reference numeral 39 indicates It is a condenser lens that collects light on a light receiving element.

The double feed detecting lamp 37 and the light receiving element 38 are both provided toward the rotary cylinder 3 side, and the light beam emitted from the double feed detecting lamp 37 is a flipped banknote Sa. Is irradiated from the direction intersecting with and the bill
It is designed to irradiate the center of the Sa turning part.

Then, in the banknote Sa irradiated with light in this way, the amount of light transmitted through the banknote Sa, that is, the amount of transmitted light is the light receiving element 38.
The double feed is determined based on the amount of transmitted light detected by the light receiving element 38. That is, if the amount of transmitted light is equal to or greater than a predetermined value (reference level), it is determined as normal feeding (single sheet feeding), and if the amount of transmitted light is less than or equal to the predetermined value, double feeding is determined.

The reference level compared with the transmitted light amount will be referred to as a double comparison level in the following description. And
One of the double comparison levels stored in the ROM 64 is appropriately selected on the basis of the denomination and the forward / reverse information described later (details will be described later).

Next, a discriminating mechanism for discriminating the denomination of bills and the front and back thereof will be described with reference to FIGS. 1 and 2.

In the figure, reference numeral 40 indicates a light projector that irradiates the accumulated frontmost banknote Sb with light, and reference numeral 41 indicates a light receiver that receives the reflected light of the light emitted from the light projector 40 onto the banknote Sb. And the light beam emitted from the projector 40 is a banknote.
The area including the area E indicated by the chain double-dashed line of Sb is irradiated.

The light receiver 41 is composed of an area sensor 42 that generates an electric signal according to the pattern on the surface of the bill and a condenser lens 43 that condenses the reflected light of the bill Sb on the area sensor 42. The area sensor 42 is a two-dimensional sensor in which a large number of linear image sensors are arranged in a direction orthogonal to the line, and a discrimination control circuit 46 to be described later.
The area E is scanned by a trigger signal emitted from the area E, the amount of reflected light at a specific position (line or coordinate) of the area E is converted into an electric signal, and a signal having a waveform corresponding to the pattern on the bill surface is generated. Is output. That is, the area sensor 42
The horizontal direction corresponds to the X coordinate of the area E, and the vertical direction corresponds to the Y coordinate of the area E. By the correspondence between the vertical and horizontal coordinates of the area sensor and the XY coordinate of the area E, , The surface pattern (line data) in the area E can be read by designating a line such as Y = 1 and Y = 3, and further, the read area data can be read.
By comparing with the reference data stored in the ROM 64 (storage means) (described later), it is possible to determine the denomination and front / back determination of the banknote Sb (details will be described later).

On the other hand, based on the denomination discriminated by the discriminating mechanism, the front and back normal information and the count value detected by the counting mechanism,
One of a plurality of double comparison levels (reference level) stored in the ROM 64 is selected and applied as a criterion for determining double feeding of bills. In other words, the denomination and front and back of each banknote are discriminated by the discriminating means, and whether or not the bill is the final banknote (100th sheet) is determined by the counting mechanism (described later). Based on the above, for each denomination stored in the ROM64, one of the double comparison levels for each front and back normal and reverse is selected one by one for each counting bill, so that it is applied to the double feed discrimination criterion. Has become.

Explaining the double comparison level stored in the ROM 64 and serving as a discrimination reference, the double comparison level is
It is classified into two types, one for the final banknote (100th banknote) and one for normal banknotes other than the final banknote (1st to 99th banknotes), and the final of the two types of double comparison levels. The double comparison level applied for banknotes is set lower than the reference level for normal banknotes.

In other words, since the final banknote is not arranged behind this banknote, the reflected light of the light emitted from the detection lamp 37 does not come from the rear side (the side where the base plate 1a is located),
The amount of transmitted light detected in the final bill is lower than the amount of transmitted light of a normal bill. As a result, the double comparison level for the final bill is set to a value lower than the double comparison level for normal bills.

The double comparison level classified into the final bill and the normal bill is applied when the mode selection switch (described later) is set to the detection mode.

Further, the double comparison level is classified into two types, one for the final bill and one for the normal bill as described above, and also according to the denomination of the bill and the front / back face (direction of the bill).
In other words, the double comparison level is
There are three types of 10,000-yen bills, 5,000-yen bills, and 1,000-yen bills, and 12 types of forward and reverse sides. There are a total of two types of double comparison levels, one for the final bills and one for ordinary bills. It is classified into 24 types and stored in ROM64.

Then, the double comparison level classified in this way is appropriately selected based on the denomination and the front / back information which are discriminated by the discriminating means, and whether the bill is double-fed or not. It serves as a judgment criterion (explained in the flowchart shown in FIG. 7). For example, if it is determined that the denomination is 10,000 yen, the face is positive, and the count value is less than 100,
Based on the result of this discrimination, one of the 24 corresponding double comparison levels is selected.

In addition, it is only an example that the double comparison level is classified into 24 types depending on the denomination, the front and back, and whether or not it is the final bill of the 100th sheet. The banknotes may be classified alone or in an appropriate combination, or may be classified by adding judgment criteria such as the position at which double suction is detected (indicated by symbol K) and the arrangement angle of the banknotes. .

Next, referring to FIG. 4, a counting control circuit 45 and a discrimination control circuit 46 for operating the counting mechanism and the discrimination mechanism, respectively.
(Comparison means, double feed judgment means, judgment means, selection means)
Will be explained.

That is, the counting control circuit 45 is a ROM 47 that stores a counting control program (see FIGS. 5 and 6) described later.
And a RAM 48 for writing and reading various data according to a program stored in the ROM 47, and a CPU 49 for controlling these. Further, the CPU 49, via the input side I / O port 50 and the receiver 51, a start switch 52 for instructing the start of counting operation, a denomination and a detection mode switch 53 for determining double feed, and front / back discrimination. Front and back mode switch 54 for connecting, and holder position detection sensors 24A and 24B that detect whether holder 1 is in the closed position or the open position, rotary cylinder position sensor 18, pressure sensor 11, clear switch, etc. The other operation switches 55 are respectively connected. The start switch 52 is composed of a push button 60 (see FIG. 1) provided on the holder 1 in this embodiment,
For example, a sensor (not shown) that detects that the banknote S is loaded in the holder 1 may be used as the start switch 52.

Further, in the CPU 49, a lamp including a solenoid (marking solenoid) 35, a double feed detection lamp 37 or a projector 40, a holder motor 23, a counting motor 19 via an output side I / O port 61 and a driver 62. , Pump mower 2
1, a solenoid valve 16, a batch solenoid 28, and an operation panel (not shown) of a bill counting machine, etc., which are connected to a display unit 63 for displaying the number of bills, presence / absence of abnormality, and the like.

On the other hand, the discrimination control circuit 46 stores a discrimination control program (see FIGS. 7 and 8) and the like in a ROM (storage means) 64, and writes various data in accordance with the program stored in the ROM 64. RAM65 for reading and
And a CPU 66 that controls them. Further, the CPU 66 has an output I / O port 70 and a drive circuit 71.
The area sensor 34 is connected via
The output of 34 is input to the CPU 66 via the amplifier 72, the A / D converter 73, and the input side I / O port 74.

The drive signal supplied from the drive circuit 71 to the area sensor 34 is composed of an X-axis drive signal and a Y-axis drive signal. The surface pattern (area data) at a specific position in the area E is read out. When extracting the surface pattern data in the area E, first, a Y-axis driving signal is output to determine the Y coordinate of the area E (see FIG. 2), and then the X-axis driving signal is output. A signal may be output to determine the X coordinate of area E. For example, Y is set to 1 to read the data in the area E as line data (X, 1), and Y is set to 3 to read the data in the area E as line data (X, 3). The output line data (X, 1), (X, 3), etc. may be compared with the reference data stored in the RAM 65 (note that the X and Y axes of the drive signal are It corresponds to the X axis and the Y axis of the area E shown in FIG.

On the other hand, similar to the area sensor 34, the A / D converter 73 is connected with the double feed detection sensors 37 and 38 via the amplifier 78. Between the amplifiers 72/78 and the A / D converter 73, analog switches 79/80 which operate by a switching signal from the output side I / O port 70 are respectively provided. Depending on 80, area sensor 34 or double feed detection sensor 37/38
One of the output signals is sent to the A / D converter 73.

Further, the CPU 49 of the counting control circuit 45 and the C of the discrimination control circuit 46
The PU 66 is connected to each other via the data transfer I / O ports 81 and 82, and is configured so that data can be mutually converted and interlocked operation can be performed.

Hereinafter, according to FIGS. 5 and 9, the counting control circuit 45 will be described.
The contents of the program stored in the ROM 47 will be described together with the operation of the bill counting machine.

Note that SN in FIG. 5 indicates step N in the following description, and Tn in FIG. 9 indicates timing Tn in the following description.

(A) ◇ Counting control operation 1 (see FIGS. 5 and 9) <Step 1> Power on <Step 2> Whether the holder 1 is in the open position according to the output signals of the holder position detection sensors 24A and 24B. If NO, drive the holder motor 23 to set the holder 1 to the open position (step 3), and if YES, proceed to the next step 4.

<Step 4> Depending on whether or not there is an output from the rotary cylinder position sensor 18, the suction shaft 5
Is in the standby position (that is, the position where the suction shaft 5 faces the bill), and if NO, the counting motor
19 is driven at a low speed to set the suction shaft 5 to the standby position (step 5), and if YES, the process proceeds to the next step 6.

<Step 6> Judge whether the mode setting operation has been performed, and YES
In the case of, the marking mode is stored by various mode setting operations, for example, the marking mode operation setting (step 50),
If NO, go to the next step 7.

<Step 7> It is determined whether or not the start signal (ST) is output from the start switch 52. If NO, the process returns to step 6; if YES, the process proceeds to the next step 8 (timing T ₁ ).

<Step 8> It is determined whether or not the detection mode switch 53 is ON, and if YES, the double feed detection lamp 37 and the projector 4
0 is turned on (step 9), and if NO, the process proceeds to the next step 10 to start the counting operation.

<Step 10> The holder 1 is detected by the outputs of the holder position sensors 24A and 24B.
Is in the closed position, and if NO, the holder motor drive signal (HMD) is output to drive the holder motor 23 to set the holder 1 in the closed position (step
11) If YES, go to the next step 12 (timing T ₂ ).

<Step 12> The pump drive signal (PMP) is output and the pump motor 21
Drive solenoid valve drive signal (SV)
Is output to switch the solenoid valve 16 to the exhaust nozzle 14 side.

<Step 13> It is determined whether or not the suction shaft 5 is at the start position, and if NO, the count motor drive signal (CMD) is output and the count motor 19 is driven at a low speed in the reverse direction to suck. The axis 5 is set to the start position (step 14), and if YES, the process proceeds to the next step (timing T ₃ ).

<Step 15> It is determined whether or not the pressure determination signal (VSW) is output, that is, it is determined whether or not the vacuum pressure in the suction pipeline 7 has risen to a predetermined value. If NO, then It is determined whether or not a predetermined time (time required to increase the vacuum pressure) has passed from the timing T ₃ (step 16). If this step 16 is NO, the process returns to step 15, and step 16 If YES, the process proceeds to the inhalation failure processing rule (shown by a chain line A in FIG. 5) described later.

On the other hand, if this step 15 is YES, the next step 17
Proceed to (timing T ₄ ).

<Step 17> When the pressure discrimination signal (VSW) is output (Step 1
A counting motor drive signal (CMD) is output to 5) to start rotation of the rotary cylinder 3 and the suction shaft 5.

<Step 18> The suction shaft 5 performs counting while flipping the banknotes one by one, and each time the rotary cylinder position sensor 18 generates a signal (SNS), a trigger signal (TRG) for extracting the detection data of the area sensor 42. ) Is output. At this time, a counting signal (CNT) is output to count (or discriminate) banknotes.
(Timing T _{6 to} T _m ).

<Step 19> It is determined whether or not the pressure determination signal (VSW) is output, that is, whether or not there is no bill to be flipped and the vacuum pressure in the suction pipe line 7 cannot be increased (OFF). Then, if it is turned off (timing T _{m + 1} ), the process proceeds to the next step 20.

<Step 20> The counting motor 19 and the pump motor 21 are stopped.

<Step 21> In Step 20, in parallel with the stopping operation of the rotary cylinder 3, it is determined whether or not the open signal of the holder is output.
If YES, return to step 2 (timing T _n ), NO
If this is the case, this step 21 is awaited. Then, when returning to step 2 (timing T _n ), it is determined whether or not the holder 1 is opened, and the holder motor drive signal (HMD) is output until the holder 1 is opened.

Then, when the holder is opened (step 4; timing T _{n + 1} ), the motor drive signal (HMD) is turned off, and at the same time, the count motor drive signal (CMD) is output and the count motor 19
To drive. When the suction shaft 5 is moved to the standby position by driving the counting motor 19, the output of the rotary cylinder position sensor 18 is turned on, and at the same time, the counting motor 19 is turned on.
Are stopped (timing T _{n + 2} ).

When the suction shaft 5 is stopped at the standby position in this way, the next start signal (step 7) allows the counting to be started immediately, and the next preparation is completed.

Next, the suction / defective processing route A will be described.

That is, when the rotary cylinder 3 cannot be stopped at a predetermined position due to a malfunction of the brake of the counting motor 19 or the like, the inside of the suction pipe line 7 is not sealed from the outside, so that a certain period of time or more elapses. The vacuum pressure does not rise and therefore the pressure determination signal cannot be turned on (step 16).

In such a case, the counting motor 19 is reversely rotated at a constant speed to adjust the position of the rotary cylinder 3 (step 30), and steps 13 to 15 are repeated. If the vacuum pressure does not increase even after repeating this operation N times (step 31), the pump motor 21 is stopped (step 32), an alarm signal is output (step 33), and then the machine is stopped. (Step 34).

Next, the counting process flow in the CPU 49 will be described with reference to FIG. 6, and the determination process flow in the CPU 66 will be described with reference to FIGS. 7 and 8.

◇ Counting control operation 2 (see FIG. 6) <Step 100> Start <Step 101> It is determined whether or not the detection mode switch 53 is ON, that is, it is necessary to read the pattern on the bill surface. , YES, a discrimination ON signal and a front / back mode signal (however, the same applies only when the front / back mode switch 54 is ON) are output (switch 102), and these banknote discrimination ON
The signal and the front / back mode signal are supplied to the discrimination routine shown in FIG. 7 (indicated by an arrow).

Further, when the detection mode switch 53 is OFF, it is determined that only counting is performed, and the process proceeds to the next step 103.

<Step 103> When the rising of the rotary cylinder position sensor output signal (SNS) is detected and YES is determined, the process proceeds to the next step 104.

<Step 104> Trigger signal (T
This trigger signal (TR
The output of G) is supplied to the discrimination routine shown in FIG. 7 (indicated by an arrow).

<Step 105> The ON-OFF state of the rotary cylinder position sensor output signal (SNS) is detected, and if ON (YES), it is determined whether or not the pressure determination signal (VSW) is ON (step 106), if this step 106 is NO, a discrimination OFF signal is output (step
150), and driving of the counting motor 19, the pump motor 21, the double feed detection lamp 37, and the lighting of the projector 40 are stopped (step 151). If the pressure determination signal (VSW) is output in step 106 (YES), the process proceeds to step 107.

<Step 107> It is determined whether or not the detection mode switch 53 is ON. If YES, the process proceeds to step 108, and if NO, the process proceeds to step 109.

<Step 108> When different denominations are detected, when the front and back discrepancies are detected in the front and back discriminating mode, when it is judged that the discriminating abnormality does not match all the reference patterns, or double suction is detected. In this case, it is determined whether or not an error signal (indicated by an arrow) output from the determination processing flow is input. If YES, the batch solenoid 28 is operated to stop counting, and if NO, To go to step 109.

<Step 109> It is determined whether or not the batch mode is ON. If NO, the procedure returns to Step 105, and if YES, Step 110.
Go to.

<Step 110> When the number of banknotes is determined and it is determined that the count value of the banknotes is less than the predetermined number (NO), the process returns to step 105, and the count value of the banknotes reaches the predetermined number. If judged (YES), turn on the batch solenoid 28,
After separating counted bills from uncounted bills (step 111)
Then, the discrimination OFF signal is supplied to the discrimination processing flow as shown by the arrow), the driving of the counting motor 19, the pump motor 21, the double feed detection lamp 37, and the lighting of the projector 40 are stopped (step 113). Then, the process proceeds to next step 114.

<Step 114> It is determined whether or not a clear operation for canceling the operation of the separator 25 that was operated during the batch processing or the error detection is performed, and if YES, the process proceeds to step 115.

<Step 115> An open signal (see step 21) is output to the holder 1, and this flow ends.

Next, step 120 to step 121 will be described.

<Step 120> In step 105, the ON-OFF state of the rotary cylinder position sensor output signal (SNS) is detected, and if it is ON, the routine of step 105 to step 109 (or step 110) is continued. , When the state becomes OFF, the process proceeds to step 120. Then, similarly to step 106, it is determined whether or not the pressure determination signal (VSW) is ON. If the determination is NO, the process proceeds to the next step 150 as in step 106, and the determination is made. The OFF signal is output (step 150), and at the same time, the driving of the counting motor 19, the pump motor 21, the double feed detection lamp 37, and the lighting of the projector 40 are stopped (step 151). If the output of the pressure determination signal (VSW) is YES, the process proceeds to step 121.

<Step 121> It is determined again whether the rotary cylinder position sensor output signal (SNS) is ON or not. If NO, the process returns to Step 120 and Y
In the case of ES, a trigger signal (TRG) is output (step 122) (this TRG is supplied to the discrimination processing flow as shown by the arrow), and after counting the counter (step 12)
3) Return to step 105.

Next, step 150 to step 165 will be described.

<Step 150> As described above, when the output of the pressure determination signal (VSW) is not detected in steps 106 and 120, for example, when the bills at the standby position are not adsorbed, or there is no bill to be counted, Judgment OFF signal is output, and
After stopping the lighting of the counting motor 19, the pump motor 21, the double feed detection lamp 37, and the projector 40 (step
151), and proceed to step 152.

<Step 152> It is determined whether or not the detection mode switch 53 is ON. If NO, the process proceeds to step 160, and if YES, the process proceeds to step 153.

<Step 153> When the end signal is not output (indicated by an arrow) from the determination routine for a certain period of time (step 154), for example, the bills to be counted are set, but the bills are set. Even if the suction is not performed, a flag indicating a residual error is set in a predetermined area of the storage unit (RAM 48 or CPU 49) (step 155) and then the process proceeds to the next step 114.

When the end signal is output from the determination processing flow of FIG. 7, the process proceeds to the next step 160.

<Step 160> It is determined whether or not the mode setting is the number-of-sheets check mode. If NO, the process proceeds to step 164, and if YES, the process proceeds to step 161.

<Step 161> It is determined whether or not the count value of the counted bills matches the number set in the number check mode. If NO, a flag indicating a mismatch error is displayed in a predetermined area of the storage unit. Stand (step 166) and proceed to step 114. When the set number of sheets and the count value match (YES)
To the next step 162.

<Step 162> It is judged whether or not the mode setting is set to the marking mode, and if YES, the marking solenoid 35 is operated,
The band is marked (step 163), and if NO, the process proceeds to the next step 164.

<Step 164> It is determined whether or not the addition mode is set, and if YES, the counting result of the previously counted banknotes is added, the addition result is stored in the storage unit, and NO in case of,
The process proceeds to step 115, and the counting process ends.

Next, FIG. 7 shows the discrimination processing flow in the CPU 66.
Description will be made with reference to the time charts of FIGS. 8 and 10.

<Step 200> Start <Step 201> It is determined whether or not a trigger signal (TRG) (indicated by an arrow) is output from the counting routine, and if YES, the process proceeds to the next step 202.

<Step 202> It is determined whether or not a discrimination ON signal (indicated by an arrow) is output from the counting routine. If NO, the process returns to step 201, and if YES, the analog switch 80 shown in FIG.
To select the output of the double feed detection sensors 37 and 38 as an amplifier.
78, after being fetched through the A / D converter 73 and stored in the RAM 65 (step 203), the process proceeds to step 204.

<Step 204> Based on the error codes set in Steps 214, 224, and 232, it is determined whether or not different denominations are mixed, front and back do not match, and there is a discrimination abnormality (mixture of abnormal banknotes). Detecting mixed denominations, inconsistency between front and back, and discrimination abnormality will be described in steps 213, 223, and 231), Y
In case of ES, an error signal and an error code are output, and the error content is displayed on the display unit 63 (step
205), and returns to step 201. The error signal output at step 205 is supplied to step 108 of the counting routine of FIG. 6 as indicated by the arrow.

Further, when there is no mixing of different denominations, inconsistency between front and back, and discrimination abnormality (NO), the process proceeds to the next step 206.

It should be noted that when the first trigger signal (TRG) is output, the steps 214, 224, and 232 have not been passed and no determination has been made, so the first step 204 is always NO and the process proceeds to step 206.

<Step 206> Based on the detection data fetched from the double feed detection sensors 37 and 38 in Step 203 and the double comparison level which is the discrimination reference set in Step 217 (described later), the double suction of the bill is determined. If YES, an error signal and an error code are output, the content of the error is displayed on the display unit 63 (step 207), and the process returns to step 201.

The error signal output at step 207 is supplied to step 108 of the counting routine of FIG. 6 as indicated by the arrow.

Further, in the case of NO, that is, when it is determined that the double adsorption is not present, the process proceeds to the next step 208.

As with step 204, the first trigger signal (TRG)
At the time of output, the banknote Sa for which double suction is to be discriminated does not exist in the position shown in FIG. 1, and since the reference double comparison level is not set, this step 206 is always NO and proceeds to step 208. .

<Step 208> The analog switch 79 shown in FIG. 4 is selected and the output of the area sensor 34 is transferred to the RAM 65 via the amplifier 72 and the A / D converter 73.
Area data (data on the N line) in the area E is fetched by storing in the area.
The area data is taken in based on the flow shown in FIG.

That is, when a capture signal is output (step 30
After setting Y to 0 and X to 0 in (0) (step 310),
Proceed to next step 302. Then, in this step 302, it is judged whether or not the output of the necessary N lines of data (line data) is completed, and if YES, a discrimination start signal is output (step 303), and FIG. Return to the main routine of. If NO in step 302, steps 304 to 311 are looped until the data of the designated N line is output in step 312, and when the output of the data is performed, the steps are performed as described above. Proceed to 303.

Then, when the line-by-line acquisition of the area data is completed in this way, the process proceeds to the next step 209 shown in FIG.

<Step 209> It is determined whether or not the data captured in step 208 is of a level having no pattern (that is, whether or not it is a black pattern on the front surface 1b of the holder 1 in the previous period) and YES (no data) After outputting the end signal (step 210), the process returns to step 201. Note that the above step 210
The end signal output at is supplied to step 153 of the counting routine of FIG. 6 as indicated by the arrow.

Further, when the taken-in area data is of a level having a pattern (NO), the process proceeds to the next step 211.

<Step 211> It is determined whether or not the bill sucked by the suction shaft 5 is the first bill, and if YES, the process proceeds to step 212 and NO.
If yes, then go to step 230.

<Step 212> For the area data of the first bill taken in step 208, a total of 12 patterns (4 × L patterns) of the current three denominations (L denominations) stored in the ROM 64 are used as a reference. Data (for one denomination, there are 4 patterns of front and back)
And are compared, and the process proceeds to the next step 213.

<Step 213> As a result of comparing the area data of the first bill and the reference data of 12 patterns, it is determined whether or not there is a matched pattern. If NO, it is impossible to discriminate the abnormal bill. Then, a flag indicating a discrimination abnormality is set in a predetermined area of the storage unit (RAM 65) (step 214), and the process returns to step 201.

If there is a matching pattern (YES), a flag indicating that the banknote identified in the predetermined area of the storage unit (RAM65) is one of the three denominations is set (step 215). ), After setting a flag indicating the front and back of the bill (step 216), the process proceeds to the next step 217.

<Step 217> It is determined whether or not the banknote sucked by the suction shaft 5 is the 100th banknote (final banknote), and if NO (the 1st to 99th banknotes), the process proceeds to step 218. , YES (10
If it is the 0th banknote), the process proceeds to step 219.

<Step 218> R based on the denomination and the front / back information determined in Step 213.
After setting the double comparison level, which is the double adsorption determination reference stored in the OM64, in the storage unit (RAM65), the process proceeds to the next step 220.

<Step 219> R based on the denomination and front / back information determined in Step 213.
After setting the double comparison level, which is the double adsorption determination reference stored in the OM64, in the storage unit (RAM65), the process proceeds to the next step 220.

The double comparison level set in this step 219 is for the 100th banknote, so the level is generally higher than the double comparison level for the 1st to 99th banknotes set in step 218. It is set low.

<Step 230> On the other hand, if it is determined in step 211 that the bill sucked by the suction shaft 5 is not the first bill, the area data of the bill taken in step 208 and the ROM 64 are stored. Only the reference data of the front and back four normal and reverse patterns for the specified denomination (the denomination set in step 215) are compared and the process proceeds to the next step 231.

<Step 231> As a result of comparing the area data of the banknote with the reference data of four patterns, it is determined whether or not there is a matching pattern. If NO, this banknote is a different denomination banknote (strictly speaking, It is also possible that there is a discriminated banknote, and a flag indicating a different denomination is set in a predetermined area of the storage unit (step 23
2) Return to step 201.

If there is a matching pattern (YES), as described above, a flag indicating the front and back of the banknote is set in a predetermined area of the storage unit (step 216), and further, in step 217, this banknote is the 100th banknote. After determining whether or not, in step 218 or step 219, the double comparison level is set in a predetermined area of the storage unit, and the next step 22
Proceed to 0 (steps 216 to 219 have already been described).

<Step 220> It is determined whether the front / back mode switch 54 is ON. If NO, the process proceeds to step 201, and if YES, the process proceeds to the next step 221.

<Step 221> It is determined whether or not this bill is the first bill. If NO, the process proceeds to step 223, and if YES, the process proceeds to the next step 222.

<Step 222> The front and back codes of the first bill set in step 216 are set in the storage unit RAM65 as front and back reference data, and the bill front and back determination is performed based on the front and back reference data (step 223).

<Step 223> The front and back codes set in step 216 and the front and back reference data set in step 222 are compared to determine whether or not the second and subsequent bills match the front and back of the first bill. Judge, and if they match (YES), return to step 201,
If they do not match (NO), the process proceeds to the next step 224, and in this step 224, a flag indicating that the two sides are mismatched is set in a predetermined area of the storage unit (step 22).
4), return to step 201 and repeat step 20 above.
Repeat steps 1 to 232.

The timings for fetching the trigger signal (TRG) and the double data described above are stored in the timing chart of FIG. These trigger signals (TRG),
Corresponding to the timing of fetching double data and the step number of FIG. 7, the discrimination trigger signal is step 20.
Corresponding to 1, the dual data acquisition timing is step 2
Corresponding to 03, the error check timing corresponds to step 204, the double check timing corresponds to step 206, the area data acquisition timing corresponds to step 208, the end check timing corresponds to step 209, and the discrimination processing timing corresponds to Corresponding to Steps 211 to 213 and Steps 230 and 231. Furthermore, the denomination, front and back, double comparison level, and error set timing are Steps 215 to 2
19, corresponding to steps 214, 224, and 232, respectively.

In the double feed detection device of the bill counting machine configured as described above, the transmitted light amount of the bill detected by the double feed detection sensor (step 203) and the double comparison level stored in the ROM 64 By comparing with, the suction shaft 5
It is determined whether or not the bills adsorbed on the paper have been double-fed (step 206).

Then, at the time of this determination, among the plurality of types of double comparison levels stored in the ROM 64, depending on the denomination and the front and back of the banknote, and the count value of the banknote is a specified value 100, or other ( 1 to 99), the optimum double comparison level is selected as appropriate (steps 215 to 21).
9) It is possible to compare the amount of transmitted light of the bill detected by the double feed detection sensor with the optimum double comparison level, and accurately determine whether the bill is double sucked (step 206). There is an effect that can be performed.

In the double feed detection device in the above-mentioned bill counting machine, depending on the denomination and front and back of the bill, the count value of the bill is 100 which is the specified value, and other (1 to 99) Although the comparison levels are selected, the present invention is not limited to this, and the double comparison levels may be selected based on the position at which the forward / reverse of the banknote or the double suction is detected.

Further, when changing the program for discriminating Japanese currency bills to the program for discriminating US dollar bills, the ROM 64 or the like is replaced.

Further, although the discrimination control circuit 46 fetches the line data along the X axis, it is not limited to this and may be fetched along the Y axis.

Further, as a sensor for reading the surface pattern in the area E, in place of the area sensor 34, a one-dimensional image sensor is arranged in a plurality of rows at intervals with respect to the Y axis or the X axis shown in FIG. The detection data may be specified in a column and read out.

Further, in this bill counting machine, the arrangement of the stamping mechanism for stamping the band seal and the double feed detecting mechanism for detecting the double feed is arbitrary.

[Effect of the Invention] According to the present invention, one of a plurality of reference data (double comparison level) to be compared with the detection data (amount of transmitted light) is selected based on the denomination and the front and back sides. (New tickets currently in circulation)
The double adsorption can be effectively detected according to the denomination or the situation in which bills such as front and back are arranged, and the effect that the detection work can be efficiently performed is obtained.

Further, the double suction can be detected in consideration of the front and back of the banknote as well as the denomination, so (i) it is sufficient to provide one detection element for detecting the double suction. (In this case, naturally, it is limited to the case of detecting a new ticket having the same size), (ii) and the detection position of the light receiving element is set to an arbitrary position in the width direction or the length direction of the bill. As a result, the effect that the light emitting element and the light receiving element can be installed with a high degree of freedom is obtained.

[Brief description of drawings]

1 to 10 show an embodiment of the present invention.
FIG. 2 is a plan view, FIG. 2 is a view taken along the line II-II in FIG.
FIG. 3 is a sectional view of the suction shaft and the suction pipe system, FIG. 4 is a block diagram of a counting control circuit and a discrimination control circuit, FIG. 5 is a flow chart of counting control operation, and FIG. 6 is a CPU operation of the counting control circuit. FIG. 7, FIG. 7 and FIG. 8 are diagrams showing the CPU operation of the discrimination control circuit, and FIGS. 9 and 10 are flow charts of the counting control operation and the discrimination control operation. 1 ... Holder 5 ... Suction shaft 37 ... Double feed detection lamp (light emitting element) 38 ... Light receiving element 46 ... Judgment control circuit (comparison means, double feed judgment means, judgment means, selection means) 64 ...... ROM (storage means)

Claims (1)

[Claims] 1. A double counter in a bill counting machine, wherein bills loaded in a holder are attracted to a suction shaft to count while flipping one by one, and the denomination and front / back of the flipped bills are determined. In the feeding detection device, a pair of a light emitting element that emits light from a direction intersecting with the bill that has been turned off by the suction shaft and a light receiving element that detects the amount of light transmitted through the bill is provided, A comparison means for comparing the amount of transmitted light detected by the element with one of the reference double comparison levels stored in advance in the storage means so as to correspond to the denomination and the front and back, and the comparison result. Provided with a double-feed determining means for detecting whether or not the bill has been double-fed based on the determining means, and a determining means for determining the denomination and front and back of the bill that has been flipped by the suction shaft, and this determining means. Selection means for selecting one of a plurality of double comparison levels stored in the storage means based on the determined denomination data and front and back data. Double feed detection device in bill counting machine.