JPS63271684A - Double-feed detector in banknote counter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention reads the optical pattern on the surface of banknotes to detect the presence or absence of mixture of different types of banknotes, and performs counting while detecting double feeding. This relates to a banknote counting machine.

"Prior art" Conventionally, as this type of banknote counting machine, the present applicant has developed a
We provided a "discrimination device for a banknote counting machine" disclosed in Japanese Patent Application No. 0-104979 and a "double feed detection device for a banknote counting machine" disclosed in Japanese Patent Application No. 77131/1983.

The "discrimination device in a banknote counting machine" disclosed in Japanese Utility Model Application Publication No. 60-104979 uses vacuum pressure in a suction shaft that rotates on its own axis to attract and count banknotes loaded in a holder one by one while flipping them over. At the same time as this counting, the banknotes optically read the surface pattern of the banknotes and further compare this surface pattern with reference data to determine whether the banknotes are of a different denomination (different kind) from the banknotes being counted. is to be checked.

In addition, the [double feed detection device for a banknote counting machine] shown in Japanese Patent Application No. 5,1-77131 is similar to the ``discrimination device in a banknote counting machine'' shown in Japanese Utility Model Application Publication No. 60-104979.
It counts bills while turning them over using a suction shaft,
By irradiating light onto the approximate center of a banknote that is being turned over, detecting the amount of light transmitted through the banknote, and comparing this detected value with a reference level, it is determined whether or not the banknote being turned over is double-adsorbed. It is supposed to be done.

``Problems to be Solved by the Invention'' By the way, the former banknote counting machine is not equipped with a function to detect double feeding, so double feeding of banknotes may be overlooked. In this banknote counting machine, double feeding of banknotes can be checked by the double feeding detection device, and the problem shown in the former case does not occur.

However, in the latter banknote counting machine, although it is possible to detect double feeding of banknotes in the middle of turning them over using the suction shaft, there are problems as shown below.

In other words, the amount of light transmitted through banknotes differs depending on the denomination, and
Since the double feed detection positions are different between the front and back sides of the banknote, and the amount of light transmitted through the banknote is different, it is difficult to set what value should be used as the reference level. For example, in the case of banknotes of a specific denomination, the reference level is constant, but if the denomination is not specified, the reference level is naturally undefined, and therefore it is difficult to accurately determine double feed. There is a problem that it cannot be done.

This invention was 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 depending on the denomination and front and back sides of the banknote to be flipped. It is an object of the present invention to obtain a double feed detection device for a banknote counting machine having a different type world discrimination function.

"Means for Solving the Problem" In order to achieve this object, the present invention has a method of counting bills loaded in a holder by adsorbing them to a suction shaft and flipping them off one by one, and counting the bills loaded in a holder. A double feed detection device in a banknote counting machine that determines the denomination and the front and back sides of the banknote includes a light emitting element that irradiates light from a direction crossing the banknote turned over by the suction shaft; a light-receiving element that detects the transmitted light m; a comparison means that compares the amount of transmitted light detected by the light-receiving element with reference levels for each denomination and front and back sides stored in the front storage means; a double feed determination means for detecting whether or not a banknote has been double fed; A selection means is provided for selecting one of the reference levels for each denomination and front and back stored in the storage means, based on banknote information such as the denomination and front and back.

"Function" According to the present invention, there is a determining means for determining the denomination and front and back sides of the banknote turned over by the suction shaft, and based on the banknote information such as the denomination and the front and back sides determined by the determining means, Since the denomination stored in the means and the selection means for selecting one of the reference levels for each front and back are provided, the optimum one can be selected from among the plurality of reference comparison levels.

"Example" The present invention will be described below based on an example shown in FIGS. 1 to 1O.

First, the structure of the banknote counting mechanism will be explained in accordance with FIGS. Move it to the counting position shown by the solid line in Fig. 1 or the standby position shown by the chain line in Fig. 1, and when the holder l is in the counting position, rotate the rotary cylinder 3 counterclockwise in Fig. 1 about the shaft 4. At the same time, the suction shaft 5 on the rotary cylinder 3 is rotated clockwise around the shaft 6, and vacuum pressure is applied to the inside of the suction shaft 5 to turn over the banknotes S on the holder l one by one while counting. In addition, the basic configuration is such that the banknotes are identified by reading the reflected light of the light rays irradiated onto the surface of the banknotes S from a light projector, which will be described later, with a light receiver.

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

The rotary cylinder 3 and the shaft 4.6 of the suction shaft 5 are formed in a hollow shape as shown in FIG. 3, and are connected to the suction port 9 of the vacuum pump 8 via the suction pipe 7. The vacuum pressure of the vacuum pump 8 acts on the banknote S through an opening lO provided in a part of the outer periphery of the suction shaft 5, so that the banknote S is attracted to the suction shaft 5. .

Further, a pressure sensor 11 is provided in the middle of the suction pipe 7, and this pressure sensor 11 allows the suction pipe 7 to
It is detected whether the vacuum pressure inside has risen to a level that can attract banknotes.

On the other hand, an exhaust pipe line 13 is connected to the exhaust boat 12 of the vacuum pump 8, and the tip of this exhaust pipe line 13 blows exhaust gas onto the sides of the banknotes S to facilitate separation of the banknotes S from each other. On the other hand, an exhaust nozzle 14 is provided in the middle of the exhaust pipe line 13 to switch the exhaust to a discharge port 15 when banknotes are not being counted to prevent the generation of noise from the exhaust nozzle 14. A solenoid valve 16 is provided.

Furthermore, a pair of position regulating pieces 5a are fixed to each of the suction shafts 5, as shown in FIGS. 1 to 3.

This position regulating piece 5a protrudes from the side surface of the suction shaft 5 and is provided so as to sandwich an opening 10 of the suction shaft 5 between the position regulating pieces 5a, and the outside air is sucked from the opening 10 and Supports the banknote from the side when it is sucked,
This prevents the banknotes from falling or bending. In this way, the position regulating piece 5a allows the suction shaft 5 to maintain the upright state of the bills that have been sucked and separated, thereby detecting whether or not double feeding is being carried out (in FIG. 1, the bill is being sucked and separated). The banknote is positioned at the position Sa).

Further, a plurality of actuation pieces 17 made of magnetic material are attached to the outer circumference of the rotary cylinder 3, and each suction shaft 5 is moved to a standby position (opening) depending on whether or not these actuation pieces 17 actuate the magnetic sensor 18. The part 10 directly faces the banknote and is in communication with the suction shaft 5 or the vacuum pump 8), or the starting position (the position immediately before the opening IO directly faces the banknote),
In addition, it is detected whether the suction shaft 5 is inside the vacuum pump 8 (a device consisting of a vacuum pump 8).

In addition, in FIG. 3, reference numeral 19 connects the rotary cylinder 3 to the belt 2.
A counting motor 21 drives the vacuum pump 8 via a belt 22, and a pump motor 21 drives the vacuum pump 8 via a belt 22.
3 is a holder motor that rotates the holder l, code 24
A and 24B are holder position detection switches that detect whether the holder I is in the closed position (close to the suction shaft 5) or in the open position (separated from the suction shaft 5).

Further, a separator 25 is provided near the rotary cylinder 3, and this separator 25 is supported by a shaft 26 so as to be horizontally rotatable, and is biased counterclockwise in FIG. 1 by a spring 27. , is operated by a patch solenoid 28 to rotate it clockwise in FIG. As will be described later, the separator 25 has a function of being inserted between a banknote that has already been turned over and a banknote that has not yet been turned over and separating the two when a banknote of a different denomination is detected. There is.

Next, a stamping mechanism for stamping a confirmation stamp on a bundle of banknotes will be explained with reference to FIG. 1.

What is indicated by the reference numeral 30 in FIG. 1 is a seal holding member provided in the holder l, and this seal holding member 3
0, the seal stamp 31 is supported movably in the directions of arrows (a) and (b), and is movably supported so as to move toward and away from the bill S. Further, a dial 32 is provided at the base end of the holder l, and by rotating the dial 32, the mark and mark 31 move in the directions of arrows (a) and (b). Stamping part 31 of the seal 31
a is aligned with band seal B.

Further, on the base supporting the holder l, there are provided a striking arm 34 that rotates in a horizontal plane about a shaft 33, and a solenoid 35 that rotates the striking arm 34. is rotated by the operation of the solenoid 35, the tip of the striking arm 34 presses the rear end 31b of the seal from behind, bringing the stamping part 31a of the seal 31 close to the band, thereby sealing the band. A seal is placed on the top.

Next, a mechanism for detecting double feeding of banknotes turned over by the suction shaft 5 will be explained with reference to FIG. 1.

In FIG. 1, reference numerals 37 and 38 respectively indicate a double feed detection lamp (light emitting element) and a light receiving element (these elements constitute a double feed detection sensor). This is a condensing lens that condenses light onto a light receiving element.

Both the double feed detection lamp 37 and the light receiving element 38 are provided facing the rotary tube 3 side, and the light beam emitted from the double feed detection lamp 37 is directed toward the flipped bill Sa. The beam is irradiated from a direction crossing the banknote Sa, and is irradiated to approximately the center position of the peeled-off portion of the banknote Sa.

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

Note that the reference level with which the amount of transmitted light is compared will be referred to as a double comparison level in the following description. and,
As for this double comparison level, one of those stored in the ROM 64 is appropriately selected based on the denomination and forward/reverse front/back information, which will be described later (details will be described later).

Next, a discrimination mechanism for discriminating the denomination and front and back of banknotes will be explained with reference to FIGS. 1 and 2.

In the figure, the reference numeral 40 indicates a light projector that irradiates light onto the banknotes sb at the forefront of the stack, and the reference numeral 41 indicates a light receiver that receives the reflected light of the light irradiated onto the banknotes sb from the projector 40. The light beam emitted from the light projector 40 is designed to irradiate an area of the banknote sb including area E indicated by a two-dot chain line.

Moreover, the light receiver 4! The area sensor 42 generates an electric signal according to the pattern on the banknote surface, and the condenser lens 4 condenses the reflected light from the banknote sb onto the area sensor 42.
It is composed of 3.

The area sensor 42 includes a plurality of linear image sensors arranged in a direction perpendicular to the line.
A dimensional sensor is activated by a trigger signal emitted from a discrimination control circuit 46 (described later), scans the front 8 area E, and converts the amount of reflected light at a specific position (line or coordinate) in this area E into an electrical signal. do,
It outputs a waveform signal that corresponds to the pattern on the banknote surface. In other words, the area sensor 42 has its horizontal direction corresponding to the X coordinate of area E, and its vertical direction corresponding to the Y coordinate of area E. Due to the correspondence with the XY coordinates, the surface pattern (line data) in area E can be read out by specifying the line, for example, Y=I, Y-3, and furthermore, the read area data can be stored in the ROM.
64 (storage means) (described later), it is possible to determine the denomination and front and back of the banknote sb (details will be described later).

On the other hand, based on the denomination discriminated by the discriminating mechanism, front/reverse information, and the count value detected by the counting mechanism,
One of a plurality of double comparison levels (reference levels) stored in the ROM 64 is selected and applied as a criterion for determining double feeding of banknotes. In other words, when the discriminating means discriminates the denomination of each banknote and whether it is front or reverse, and the counting mechanism determines whether the banknote is the last banknote (100th sheet) or not (described later), the denomination and front and back information are determined. Based on the above, one of the double comparison levels stored in the ROM 64 for each denomination, front and reverse, is sequentially selected for each banknote to be counted, and applied to the double feed discrimination criteria. It has become.

To explain the double comparison level that is stored in the ROM 64 and serves as a discrimination standard, first, the double comparison level is for the final banknote (100th banknote) and for normal banknotes other than the final banknote (1 to 99 banknotes). Among these two types of double comparison levels, the double comparison level applied to the final banknote is set lower than the standard level for normal banknotes. ing.

In other words, the final banknote is the final banknote because no banknote is placed behind it, and the reflected light of the light emitted from the detection lamp 37 does not come from the rear (the side where the base plate 1a is located). The amount of transmitted light detected in a banknote is lower than the amount of transmitted light in a normal banknote. As a result, the double comparison level for the final banknote is set to a lower value than the same double comparison level for normal banknotes.

Note that the double comparison level classified into final banknotes and normal banknotes is applied when the mode selection switch (described later) is designated to the detection mode.

Further, the double comparison level is classified into two types, as described above, those for final banknotes and those for regular banknotes, and is also classified by the denomination of banknotes and front/reverse front/back (orientation of banknotes).

In other words, the double comparison level for Japanese banknotes is
- There are 3 types: 10,000 yen hole, 5,000 yen bill, and 1,000 yen bill, and 12 types that match the front and back sides. It is classified into 24 types and stored in 110M64.

Then, the double comparison level classified in this way is appropriately selected based on the denomination and front/reverse information determined by the discrimination means, and is used to determine whether or not the banknote has been double fed. This becomes a judgment criterion (explained using the flowchart shown in FIG. 7). For example, if it is determined that the denomination is 10,000 yen, the face is in the positive direction, and the count value is less than 100, then based on this determination result, the corresponding one of the 24 double comparison levels is One is selected.

The classification of the double comparison level into 24 types depending on the denomination, front and back, and whether or not it is the final 100th bill is just one example. Banknotes may be classified individually or in appropriate combinations.
Further, the classification may be performed by adding judgment criteria such as the position at which double suction is detected (indicated by the symbol) and the arrangement angle of the banknote.

Next, with reference to FIG. 4, a counting control circuit 45 and a discrimination control circuit 46 (comparison means, double feed judgment means, judgment means, and selection means) that operate the counting mechanism and discrimination mechanism, respectively, will be explained.

That is, the counting control circuit 45 is an RO that stores a counting control program (see FIGS. 5 and 6), which will be described later.
M47 and a RAM for writing and reading various data according to the program stored in this ROM47.
48, and a CPU 49 that controls them. Furthermore, the CPU 49 has an input side I10 port 50.
A start switch 52 for instructing the start of counting operation, a detection mode switch 53 for determining the denomination and double feed, and a front/back mode switch 54 for front/back discrimination are connected via the receiver 51. Holder position detection sensors 24A and 24B1 which detect whether holder position sensor 1 is in the closed position or open position
8, a pressure sensor 11 and other operation switches 55 such as a clear switch are connected respectively. In this embodiment, the start switch 52 is constituted by a push button 60 (see FIG. 1) provided on the holder l, but for example, a senna ( (path shown) may be used as the start switch 52.

The CPU 49 is also connected to a solenoid (printing solenoid) 35, a double feed detection lamp 37, or a floodlight 4 via an output side I10 boat 61 and a driver 62.
0 lamp, the holder motor 23, the counting motor 19, the pump motor 21, the solenoid valve 16, the patch solenoid 28, and the operation panel (illustrated path) of the banknote counting machine to display the number of banknotes, presence or absence of abnormality, etc. A display unit 63 for displaying is connected to each.

On the other hand, the discrimination control circuit 46 runs a discrimination control program (
A ROM (storage means) 64 that stores data such as those shown in FIG. 7 and FIG. It consists of Furthermore, the CPUG 6 has an output I1
Area sensor 3 via 0 boat 70 and drive circuit 71
4 is connected, and the output of this area sensor 34 is sent to the amplifier 7.
2. The signal is input to the CPU 66 via the A/D converter 73 and the input terminal I10 port 74.

Note that the drive circuit 7! The drive signal supplied to the area sensor from The surface pattern (area data) is read out. When extracting surface pattern data in area E, first output a Y-axis drive signal to determine the Y coordinate of area E (see Figure 2), and then output the Y-axis drive signal. The X coordinate of area E may be determined by outputting a signal. For example, set Y to 1 and convert data in area E to line data (X.

l), further set Y to 3 and read out area E.
The data in is read out as line data (X, 3), and these read out multiple line data (X, 1)
, (X, 3), etc. may be compared with reference data stored in the RAM 65 (note that the drive signal
The axes and Y axes correspond to the X and Y axes of area E shown in FIG. 2, respectively).

On the other hand, the A/D converter 73 includes an area sensor 3.
4, the double feed detection sensor 3 is connected via the amplifier 78.
7 and 38 are connected. In addition, these amplifiers 72.
78 and the A/D converter 73, there is an output side I10.
Analog switches 79 and 80 which are operated by switching signals from the boat 70 are provided respectively, and these analog switches 79 and 80 control the area sensor 34.
Alternatively, the output signal of either one of the double feed detection sensors 37 and 38 is sent to the A/D converter 73.

Further, the CPU 49 of the counting control circuit 45 and the CPU 66 of the discrimination control circuit 46 are connected to the I10 port 8 for data transfer.
(2) They are connected to each other via 82, and are configured so that they can mutually convert data and operate in conjunction.

Hereinafter, according to FIGS. 5 and 9, the counting control circuit 4
The contents of the program stored in the ROM 47 of No. 5 will be explained together with the operation of the banknote counting machine.

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

(a) Counting control operation l (see Figures 5 and 9) Step l> Power on <Step 2> Based on the output signals of the holder position detection sensors 24A and 24B, check whether the holder l is in the open position or not. If the answer is NO, the holder motor 23 is driven to set the holder 1 to the open position (step 3), and if the answer is YES, the process proceeds to the next step 4).

Step 4> Based on the presence or absence of an output from the rotary cylinder position sensor 18, it is determined whether the suction shaft 5 is in the standby position (that is, the position where the suction shaft 5 directly faces the banknote). The counting motor 19 is driven at 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> Determine whether the mode setting operation has been performed, and press YES.
In the case of S, the stamping mode is memorized by various mode setting operations, for example, stamping mode operation settings, step 50.
), and in the case of No, proceed to the next step 7.

Step 7> It is determined whether the start signal (ST) is output from the start switch 52, and if No, the step 6 is performed.
If the answer is YES, the process proceeds to the next step 8 (timing T).

(Step 8) Determine whether the detection mode switch 53 is ON. If YES, turn on the double feed detection lamp 37 and floodlight 40 (Step 9); if NO, proceed to the next step. The process advances to step 10 to start counting.

<Step 10> Based on the outputs of the holder position sensors 24A and 24B, it is determined whether the holder 1 is in the closed position or not. If No, the boulder motor drive signal (1-IMD) is output and the holder motor is activated. 23 to set the holder l in the closed position (step 11); if YES, the process proceeds to the next step 12 (timing 'r).

<Step 12> A pump drive signal (PMP) is output to drive the pump motor 2I, and a solenoid valve drive signal (
SV') is output, and the solenoid valve 16 is switched to the exhaust nozzle 14 side.

Step 13> It is determined whether or not the suction shaft 5 is at the starting position. If NO, a counting motor drive signal (CMD) is output and the counting motor 19 is driven in the reverse direction at low speed. Set the suction shaft 5 to the starting position (step 14), and if YES, proceed to the next step (timing T3).

Step 15> Determine whether or not the pressure determination signal (VSW) is output,
That is, it is determined whether or not the vacuum pressure within the suction pipe line 7 has increased to a predetermined value, and if No, a predetermined time (time required for the vacuum pressure to rise) from the above-mentioned timing T is determined.
Step 16) to determine whether the elapsed time has elapsed; if NO in step 16, return to step 15;
If step 16 is YES, the process proceeds to a suction failure processing rule (indicated by chain line A in FIG. 5), which will be described later.

On the other hand, if this step I5 is YES, the process proceeds to the next step 17 (timing T).

<Step +7> When the pressure discrimination signal (VSW) is output (step 15), a counting motor drive signal (CM D ) is output, and rotation of the rotary cylinder 3 and the suction shaft 5 is started.

Step 18> The suction shaft 5 counts the bills while turning them over one by one, and every time the rotary cylinder position sensor 18 generates a signal (SNS), a trigger signal (TRG) is sent to retrieve the detection data of the area sensor 42. ) is output. Also, at this time, a counting signal (CNT) is output to count (or discriminate) the banknotes (timings T, -Tm).

<Step +9> Determine whether or not the pressure determination signal (VSW) is output, that is, whether or not there are no bills to be turned over and the vacuum pressure in the suction pipe 7 cannot rise (OFF). Then, on the condition that it is turned OFF (timing Tm++), the process proceeds to the next step 20.

Step 20> Counting motor 19 and pump motor 21 are stopped.

Step 21> In parallel with the stopping operation of the rotary cylinder 3 in step 20,
It is determined whether or not the holder open signal has been output, and if YES, the process returns to step 2 (timing Tn
), in the case of No, the process waits in step 21. Then, when returning to step 2 (timing T n)
, it is determined whether holder l is open or not, and the boulder motor drive signal (HM
D) is output.

Then, when the boulder opens (step 4; timing Tn, etc.), the motor drive signal (HMD) is turned off and at the same time a counting motor drive signal (CMD) is output to drive the counting motor 19. When the suction shaft 5 is moved to the standby position by the driving of 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 stopped (timing Tn+t).

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

Next, the suction and defect processing route A will be explained.

That is, if the rotary cylinder 3 cannot be stopped at a predetermined position due to a malfunction of the brake of the counting motor 19, etc., the inside of the suction pipe 7 will not be sealed from the outside, even after a certain period of time has elapsed. The vacuum pressure does not rise, and the pressure judgment signal cannot turn ON (
Step 16).

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

Next, we will discuss the counting process flow in the CPU 49 in the sixth section.
This will be explained with reference to the drawings, and further, the flow of the determination processing in the CPU 66 will be explained with reference to FIGS. 7 and 8.

◇Counting control operation 2 (see Fig. 6) Step 100> Start step +01> Determine whether the detection mode switch 53 is ON, that is, whether it is necessary to read the pattern on the banknote surface. , in the case of YES, the banknote discrimination ON signal and the front/back mode signal (however, only when the front/back mode switch 54 is ON, the same applies hereinafter) are outputted (step 102), and these banknote discrimination ON signal and front/back mode signal are output in the seventh step. The data is supplied to the determination routine shown in the figure (indicated by the arrow ■).

Also, if the detection mode switch 53 is OFF, it is determined that only counting is to be performed, and the next step 1 is performed.
Proceed to 03.

Step 103> The rising of the rotary tube position sensor output signal (S N S ) is detected, and if YES, the process proceeds to the next step 104 .

<Step 104> The trigger signal (TRG) is raised at the same timing as step 103, and the output of this trigger signal (TRG) is supplied to the determination routine shown in FIG. 7 (indicated by the arrow ■). .

<Step 105> Detect the 0N-OFF state of the rotary cylinder position sensor output signal (SNS), and if it is 0N (YES), determine whether the pressure judgment signal (VSW) is ON or not.Step 106 ), if this step 106 is NO, output the discrimination OFF signal (step 150 ), and stop driving the counting motor 19 and pump motor 2I, and stop lighting the double feed detection lamp 37 and the floodlight 40 ( Step 151). Further, in step 106, a pressure determination signal (VSW) is output (YES).
In this case, the process advances to the next step 107.

<Step 107> It is determined whether the detection mode switch 53 is turned on or not. If YES, proceed to step 108; if NO, proceed to step 109.

Step 108> If a different denomination is detected, if a discrepancy between the front and back sides is detected in the front/back discrimination mode, if the pattern does not match all standard patterns and is judged to be a discrimination abnormality, or if double adsorption is detected. In this case, determine whether there is an input of an error signal (indicated by an arrow ■) output from the discrimination processing flow, and select YES.
In the case of No, the patch solenoid 28 is operated to interrupt counting, and in the case of No, the process proceeds to step 109.

Step 109> Determine whether batch mode is ON or not, and select NO.
If YES, the process returns to step 105, and if YES, the process proceeds to step 110.

<Step +10> The number of banknotes is determined, and if it is determined that the banknote count is less than the predetermined number (NO), the process returns to step +05, and if the banknote count has reached the predetermined number. If it is determined (YES), the solenoid 2
8 is turned ON to separate counted banknotes from uncounted banknotes (step 1ll), a discrimination OFF signal is output (step 112X). This discrimination OFF signal is supplied to the discrimination processing flow as shown by the arrow ), counting motor 19, pump motor 21 drive and double feed detection lamp 37,
Lighting of the projector 40 is stopped (step 113). Then, the process proceeds to the next step 114.

Step 114> Determine whether or not a clear operation has been performed to deactivate the separator 25 that was activated during batch processing or when an error was detected, and if YES4), proceed to Step 115.
Proceed to.

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

Next, steps 120 and 121 will be explained.

Step 120> In step 105, the ON-OFF state of the rotary cylinder position sensor output signal (SNS) is detected and turned ON.
If the state is, steps 105 to 109 are performed.
(or step 110), and OF
When the F state is reached, the process moves to step 120. Then, similarly to step 106, it is determined whether or not the pressure determination signal (VSW) is ON, and if this determination is NO, the process proceeds to the next step 150, similar to step 106, and the determination is made. Outputs an OFF signal (
At the same time as step 150), driving of the counting motor 19 and pump motor 21 and lighting of the double feed detection lamp 37 and the floodlight 40 are stopped (step 151).

Further, if the output of the pressure determination signal (VSW) is YES, the process proceeds to step 121.

<Step +21> Determine again whether the rotating part position sensor output signal (SNS) is ON, and if NO, proceed to step 120.
Return to , and if YES, trigger signal (T RG
) (Step! 220 This TRG is supplied to the discrimination processing flow as shown by the arrow ■), and after counting the counter by 1 (Step 123), the process returns to Step 105.

Next, step 150 ~ STEP! 65 will be explained.

<Step 150> As described above, in steps 106 and 120, if the output of the pressure determination signal (VSW) is not detected, for example, if the banknotes in the standby position are not picked up or if there are no banknotes to be counted, After the determination OFF signal is output and the driving of the counting motor 19 and pump motor 21 and the lighting of the double feed detection lamp 37 and light projector 40 are stopped (step 151), the process proceeds to step 152.

<Step 152> It is determined whether or not the detection mode switch 53 is turned on. If NO, proceed to step 160; if YES, proceed to step 15'3.

Step 153> If the end signal (indicated by the arrow ■) is not output from the discrimination routine for a certain period of time (step +54), for example, even though banknotes to be counted are set, If the bill is not adsorbed, a flag indicating a residual error is set in a predetermined area of the storage unit (RAM 48 or CPU 49) (step 155).
), proceed to the next step 114.

Further, if an end signal is output from the determination processing flow shown in FIG. 7, the process proceeds to the next step +60.

<Step 160> Determine whether the mode setting is set to the number of sheets check mode, and if NO, proceed to Step 164 and select YES.
In this case, the process advances to step 161.

Step 161> Determine whether or not the counted value of banknotes matches the number set in the number check mode, and select NO.
In this case, a flag indicating a mismatch error is set in a predetermined area of the storage section (step 166), and the process proceeds to step 114. Further, if the set number of sheets and the count value match (YES), the process advances to the next step +62.

(Step 162) It is determined whether the mode setting is set to the stamping mode. If YES, the stamping solenoid 35 is operated to stamp the seal. (Step 163)
In this case, proceed to the next step +64.

Step 164> Determine whether the addition mode is set and select YES.
In the case of , add the counting results of the banknotes counted earlier,
The addition result is stored in the storage section, and in the case of No, the process proceeds to step 115 and the counting process ends.

Next, the seventh section regarding the determination processing flow in the CPU 66 will be explained.
This will be explained with reference to the time charts shown in FIGS. 8 and 10.

Step 200> Start Step 201> From the counting routine, trigger signal (TRG) (arrow ■
) is output, and if YES, the process proceeds to the next step 202.

Step 202> It is determined whether or not a determination ON signal (indicated by an arrow ■) is output from the counting routine, and if No, step 201 is performed.
If the answer is YES, select the analog switch 80 shown in FIG. Step 203), proceed to step 204.

<Step 204> Based on the error codes set in Steps 214, 224, and 232, it is determined whether or not there is a mixture of different denominations, there is a mismatch between the front and back sides, and there is a discrimination error (contamination of abnormal banknotes). Seed contamination, front and back mismatch,
For detection of discrimination abnormality, step 213.223.2
31), if YES, an error signal and an error code are output, and the error details are displayed on the display section 63.
After displaying (step 205), the process returns to step 201. Incidentally, the error signal outputted in step 205 is supplied to step +08 of the counting routine in FIG. 6, as indicated by the arrow ■.

If there is no mix-up of different denominations, no discrepancy between the front and back sides, or a discrimination error (NO), the process proceeds to the next step 206.

Note that when the first trigger signal (TRG) is output,
Since steps 214, 224, and 232 have not been passed and no determination has been made, the first step 204 is always N.
The process proceeds to step 206 with o.

Step 206> Based on the detection data taken in from the double feed detection sensors 37 and 38 in step 203 and the double comparison level serving as the discrimination standard set in step 217 (described later), it is determined whether the banknote is double adsorbed. If it is YES, it outputs an error signal and an error code, and displays the error details on the display unit 63 (step 207).
, return to step 201.

Note that the error signal output in step 207 is sent to step 10 of the counting routine in FIG. 6, as indicated by the arrow ■.
8.

Further, in the case of No, that is, when it is determined that there is no double adsorption, the process proceeds to the next step 208.

Note that, similarly to step 204, the first trigger signal (T
I'l) At the time of output, the banknote Sa for which double suction should be determined does not exist in the position shown in FIG. 1, and the standard double comparison level has not been set, so this step 206 is always NO. Proceed to step 208.

Step 208> By selecting the analog switch 79 shown in FIG. ) is imported. Note that this area data is taken in based on the flow shown in FIG.

In other words, when the capture signal is output (step 30
0), Y is set to 0, and X is set to 0 (step 301
), proceed to the next step 302. Then, this step 302 determines whether or not the output of the necessary N lines of data (line data) has been completed, and if YES, a determination start signal is output (step 303), and the seventh
Return to the main routine shown in the figure. Further, in the case of No in step 302, steps 304 to 31 are performed until the data of the designated N line is outputted in step 312.
1 in a loop, and when the data is output, the process proceeds to step 303 as described above.

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

Step 209> Whether or not the data imported in step 208 is at a level that does not have a pattern (i.e., the previous period boulder l
The surface of! b), and then select YES (
(no data), after outputting the end signal (
Step 21O), return to step 201. The end signal output in step 210 is supplied to step 153 of the counting routine in FIG. 6, as indicated by the arrow ■.

Furthermore, if the captured area data is of a level having a pattern (No), the next step 211 is performed.
Proceed to.

Step 2+1> It is determined whether or not the banknote sucked by the suction shaft 5 is the first one. If YES, the process proceeds to step 212; if NO, the process proceeds to step 230.

<Step 212> Standard data for a total of 12 patterns (4 x L patterns) of the current three denominations (LPi denominations) stored in the ROM 64 is applied to the area data of the first banknote imported in step 208. (For denomination I, there are four patterns of front and back, forward and reverse), and the process proceeds to the next step 213.

<Step 213> As a result of comparing the area data of the first banknote with the standard data of 12 patterns, it is determined whether there is a matching pattern, and if NO, it is determined that the banknote is an abnormal banknote that cannot be identified. As such, 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.

In addition, if there is a matching pattern (YES), a flag indicating that the identified banknote is one of the three denominations is set in a predetermined area of the storage unit (RAM 65) ( Step 215), furthermore, after setting a flag indicating the front and back sides of the banknote (step 216), the next step 2
Proceed to step 17.

<Step 217> It is determined whether or not the banknote sucked by the suction shaft 5 is the 100th banknote (last banknote). If NO (the banknote is the 1st to 99th banknote), the process proceeds to step 218. , YES
(it is the 100th bill), step 2
Proceed to step 19.

<Step 218> Based on the denomination and front/back information determined in step 213, the double comparison level, which is the discrimination criterion for double adsorption, is stored in the ROM 64 and is set in the storage unit (RAM 65), and then the following Proceed to step 220.

Step 219> Based on the denomination and front/back information determined in step 213, the double comparison level, which is a criterion for determining double adsorption, is stored in the ROM 64 and stored in the storage unit (RAM 65). , proceed to the next step 220.

Note that the double comparison level set in step 219 is for the 100th bill, so step 218
Compared to the double comparison level for the 1st to 99th banknotes set in , the level is set lower overall.

Step 230> On the other hand, in step 211 described above, the suction shaft 5
If it is determined that the sucked banknote is not the first one, the area data of the banknote imported in step 20B and the specific gold N stored in the ROM 64 (the denomination set in step 215) are Compare only the standard data of 4 patterns of front, back, forward and reverse for
Go to 1.

<Step 231> As a result of comparing the area data of the banknote and the reference data of 4 Bakun, it is determined whether there is a matching pattern, and in the case of N or O, this banknote is a banknote of a different denomination (strictly Therefore, a flag indicating a different denomination is set in a predetermined area of the storage unit (step 23).
2) Return to step 201 above.

Well, if there is a matching pattern (YES),
As described above, a flag indicating the front and back sides of the banknote is set in a predetermined area of the storage unit (step 216), and further, after determining whether or not this banknote is the 100th banknote in step 217, step 218 or step 219 is performed. At this point, a double comparison level is set in a predetermined area of the storage section, and the process proceeds to the next step, block 220 (steps 216 to 219 have already been described).

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

Step 221> Determine whether this banknote is the I-th bill or not.

In the case of YES, the process advances to step 223, and in the case of YES, the process advances to the next step 222.

<Step 222> The front and back codes of the first banknote set in step 216 are set in the memory RAM 65 as front and back reference data, and the front and back of the banknote is subsequently determined based on this front and back reference data (step 223).

<Step 223> Front and back codes set in step 216 and step 2
It is determined whether the second and subsequent banknotes match the front and back sides of the first banknote by comparing the front and back reference data set in step 22, and if they match (YES), step 2
Return to step 01, and if there is a mismatch (No), proceed to the next step 224, and in this step 224, set a flag indicating that the front and back sides do not match in a predetermined area of the storage section (step 224), and return to step 201. , repeat steps 201 to 232 described above.

Note that the above-mentioned trigger signal (T RG ), timing for capturing double data, etc. are described in the timing chart of FIG. 10. These trigger signals (
TRG), timing of importing double data, etc.
Corresponding to the step numbers in the figure, the discrimination trigger signal corresponds to step 20+, the double data capture timing corresponds to step 203, and hereinafter, the error check timing corresponds to step 204, the double check timing corresponds to step 206, Area data import timing corresponds to step 208, end check timing corresponds to step 209, and determination processing timing corresponds to steps 211 to 213 and steps 230 and 23.
1, and the denomination, front and back, double comparison level, and error set timing correspond to steps 215 to 219 and steps 214, 224, and 232, respectively.

In the double feed detection device of the banknote counting machine configured as described above, the amount of transmitted light of the banknote detected by the double feed detection sensor (step 203) and the double comparison level stored in 110M64 By comparing these, it is determined whether or not the banknotes attracted to the suction shaft 5 have been fed twice (step 206).

In this determination, among the multiple types of double comparison levels stored in the ROM 64, depending on the denomination and front and back of the banknote, whether the count value of the banknote is the specified value +00 or other ( 1 to 9), the optimal double comparison level is selected accordingly (Step 2).
15 to 219), the amount of transmitted light of the banknote detected by the double feed detection sensor can be compared with the optimal double comparison level, and it is determined whether the banknote is double-adsorbed (step 206). This has the effect that it can be performed accurately.

Note that the double feed detection device in the banknote counting machine described above detects double feed depending on the denomination and front and back sides of the banknote, and whether the count value of the banknote is the specified value +00 or other values (1 to 99). Although the comparison level is selected, the present invention is not necessarily limited to this, and the double comparison level may be selected based on the position where forward/reverse banknotes or double suction is detected.

Furthermore, when changing the program for discriminating Japanese banknotes to a program for discriminating US dollar bills, this is done by replacing the ROM 64 and the like.

In addition, the above-mentioned discrimination control circuit 46 inputs the line data to
Although it is taken out along the axis, it is not limited to this, and it may be taken out along the Y axis.

Furthermore, as a sensor for reading the surface pattern in the area E, in place of the area sensor 34, a plurality of one-dimensional image sensors are arranged at intervals with respect to the Y axis or the X axis shown in FIG. 2, and further, The detection data of these sensors may be read out by specifying a column.

Furthermore, in this banknote counting machine, the arrangement of the stamping mechanism for stamping the band and the double-feed detection mechanism for detecting double-feed is arbitrary.

"Effects of the Invention" As explained in detail above, according to the present invention, there is provided a determination means for determining the denomination and front and back sides of a banknote turned over by a suction shaft, and a denomination and front and back sides determined by the determination means. Based on banknote information such as banknotes, etc., selecting means is provided for selecting one of the reference levels for each denomination and front and back sides stored in the storage means, so that the optimum one is selected from among the plurality of reference levels. This has the effect that it is possible to accurately determine whether or not banknotes are being fed twice.

[Brief explanation of the drawing]

Fig. 1 to Fig. 1O show one embodiment of the present invention, Fig. 1 is a plan view, Fig. 2 is a view taken along the line ■-■ in Fig. 1, and Fig. 3 is a suction axis. and a cross-sectional view of the suction pipe system, Figure 4 is a block diagram of the counting control circuit and discrimination control circuit, Figure 5 is a flowchart of counting control operation, and Figure 6 is the CPU of the counting control circuit.
The diagrams illustrating the operation, Figures 7 and 8 are CI of the discrimination control circuit.
) Figures 9 and 10 showing the U operation are flowcharts of the counting control operation and the discrimination control operation. 1... Holder 5... Suction shaft 37... Double feed detection lamp (light emitting element) 3
8... Light receiving element 46... Discrimination control circuit (comparison means, double feed judgment means, judgment means, selection means)

Claims (1)

[Scope of Claims] Two bill counting machines in which bills loaded in a holder are attracted to a suction shaft and counted while being turned over one by one, and the denomination and front and back of the flipped bills are determined. In the double feed detection device, a light emitting element that irradiates light from a direction crossing the bill turned over by the suction shaft, a light receiving element that detects the amount of transmitted light irradiated to the bill, and this light receiving element. Comparison means for comparing the detected amount of transmitted light with reference levels for each denomination and front and back sides stored in the front storage means, and a double feed judgment for detecting whether or not a banknote has been fed double based on the comparison result. a determining means for determining the denomination and the front and back sides of the banknote turned over by the suction shaft; and storing in the storage means based on the banknote information such as the denomination and the front and back determined by the determining means. 1. A double feed detection device for a banknote counting machine, comprising a selection means for selecting one of standard levels for each denomination and front and back sides.