JPS636902B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a paper sheet counter with an abnormality determination function. A paper sheet counting machine with an abnormality detection function is a paper sheet counting machine that detects the occurrence of an abnormality such as mixing of different types of bills or double feeding, and performs predetermined processing such as extracting the identified different types of bills. It is something to do. In connection with this paper sheet counting machine with an abnormality discrimination function, the applicant has proposed a "device for discriminating different types of paper sheets for a paper sheet counting machine".
(Patent Application No. 53-157076), "Double Feed Detection Device for Paper Sheet Counting Machine with Different Types of Bill Discrimination Function" (Patent Application No. 1983-22126)
A patent application has been filed for the following. The paper sheet counting machine, for example, the banknote counting machine according to the invention of the former (Japanese Patent Application No. 157076/1983) irradiates the upper and lower ends of banknotes, which are turned up one by one by a suction head, with light. By receiving light with a photoelectric conversion element installed in each ticket type,
If banknotes of different denominations of different sizes (different types of notes) are mixed in the banknote bundle to be counted, the different types of notes can be automatically distinguished during counting. Therefore, it is possible to reliably distinguish between different types of notes in a banknote bundle, which was impossible to distinguish using conventional banknote counting machines, and it is therefore possible to perform desired actions on different types of notes, such as invalidating the identified different types of notes. Accurate counting results can be obtained for normal tickets, etc.
It has various features. In addition, paper sheet counting machines, such as banknote counting machines, according to the latter invention (Japanese Patent Application No. 54-22126) have been found to suffer from damage such as pinholes in banknotes, defects such as bending, wrinkles, malfunction of the suction head, etc. Equipped with a double feed detection device that can reliably detect double feeding of paper sheets that occurs, and as a result, when double feeding occurs, this double feeding can be detected immediately and an alarm etc. can be issued. Therefore, counting errors due to double feeding can be prevented, which is extremely convenient in practice. By the way, to explain the operation procedure for detecting different types of bills (including double feeding detection) in a conventional different type of bill discriminating device, a banknote is attracted by the suction head 1 and turned over, and at a predetermined timing during turning over, the lower end position of the banknote is determined. The peak point of the detection signal at the upper end of the banknote is then memorized and retained. Then the next bill is turned over in the same way,
At the predetermined timing, it is determined whether the previous bill is a different type of bill or not, and the lower end position of the bill that is currently being turned is detected and stored. As mentioned above, the reason why the timing of detecting different types of bills or double feeding is delayed until just before the next bill is turned over is that the suction head 1 is not equipped with a member to hold the upper end of the bill in an upright state, Since the upper end is in a free state, the turning state is influenced by the stiffness of the banknote. In other words, if the circulation rate is high, the banknotes tend to bend or become weak, and the top edge of the banknote is not turned over in an upright position, and often falls over.Since only the top edge of the banknote reaches the detection position later, the timing at which the detection signal appears may also be affected. It just becomes more irregular. Therefore, the detection timing is delayed as much as possible to ensure that the peak point is memorized and retained. Therefore, it was possible to electrically stop the input signal to the counter that counts the number of tickets by detecting different types of tickets or double feeding, but it is possible to turn over different types of tickets by activating the batch device (a device for taking out arbitrary number of tickets). The timing is too late to separate the banknotes from the uncounted banknotes via a separator and interrupt the counting operation, and in reality, after turning over the different types of banknotes, one more
It was interrupted with a banknote turned over, which was not a desirable design. (In addition, although it is clearly stated in Japanese Patent Application No. 103284/1988 that counting is interrupted electrically, it is not specifically stated that counting is interrupted by a batch device.) This invention was developed in consideration of the above circumstances. The purpose of this was to stop leaf turning immediately after an abnormality occurred, and to remove the sheets that had been turned up before the abnormality from those that had not yet been peeled off. To provide a paper sheet counter with an abnormality discrimination function that can be separated. An embodiment in which the present invention is applied to a banknote counting machine will be described below. First, the mechanical configuration and circuit configuration of this banknote counting machine will be explained, and then the operation will be explained. FIG. 1 shows the main mechanical structure of this banknote counting machine, and FIG. 2 shows the optical system of this main structure in detail. In Figures 1 and 2, a plurality of coins (in this example, five
On one side of the rotary cylinder 2, which rotatably supports a suction head 1, there is a banknote bundle holder 3 whose rear end is rotatably supported, and a substantially central portion on the inner surface of the holder 3. A banknote bundle holding rod 4 is provided adjacent to the banknote bundle holding rod 4. A mounting plate 1a and a rod-shaped holder 1b are fixedly attached to the upper end of the suction head 1. This holding body 1b
As will be described later, the purpose of this is to prevent bills that are turned over from being bent, thereby ensuring the detection of different types of bills and the like. In addition, the holder 3
An arcuate banknote stopper 5 is vertically disposed above the free end of the banknote. On the other hand, a conventionally known non-contact switch 7 is installed close to the side wall surface of the rotary cylinder 2, and the same number of suction heads 1 as the suction heads 1, that is, five in this example, are installed at equal intervals on the side peripheral wall surface of the rotary cylinder 2. A piece of magnetic material 8 such as a piece of iron is attached. Therefore, when the rotary cylinder 2 rotates as will be described later, the non-contact switch 7 detects a piece of magnetic material 8 passing in front of it and outputs a signal as shown in FIG. 10a. Further, a batch device 90 is provided around the rotary tube 2 and close to the banknote bundle 6 at the counting position. This batch device 90 is configured to stop counting and flipping the banknotes when a preset number of banknotes have been turned over and counted, so that the set number of banknotes can be taken out. In this embodiment, the batching device 90 is used to stop counting and turning up even when it is determined whether there is a different type of ticket or abnormal feeding. This point will be explained in detail later. This batch device 90 includes a solenoid 91, a plunger 92, a return spring 93, and a separator arm 9.
5 and a pin 94. Normally,
The plunger 92 is caused to protrude by the return force of the return spring 93, and as a result, the separator arm 95 is positioned as shown by the broken line. On the other hand, the solenoid 91 is
When is excited, the plunger 92 is retracted,
As a result, the separator arm 95 is positioned as shown by the solid line. Note that, although the holding body 1b moves as the rotary cylinder 4 rotates, it does not come into contact with the separator arm 95. In addition, this separator arm 95
The holder 1b is arranged so as not to obstruct a banknote upper end monitoring area (indicated by diagonal lines in FIG. 3), which will be described later, as shown in FIG. The optical system of the banknote counting machine includes a light projector 9 for detecting the bottom edge of a banknote, a light projector 16 for detecting the top edge of a banknote, a light receiver 15 for detecting the bottom edge of a banknote, and a light receiver 22 for detecting the top edge of a banknote. These light projectors 9, 16 and light receivers 15, 22 are arranged around the rotary cylinder 2 in the order of the light receivers 22, 15 and the light projectors 9, 16 in a clockwise direction. The projector 9 consists of a lamp 10 and a convex lens 11, and the projector 16 similarly consists of a lamp 17 and a convex lens 18. The light receiver 15 consists of photoelectric conversion elements 15A to 15D and a convex lens 14. The photoelectric conversion elements 15A to 15D are formed at different positions in the vertical direction (the front and back directions of the paper in FIG. 1), and are capable of detecting the lower end of a banknote, as described later (see FIG. 6). . The light receiver 22 is made up of similar photoelectric conversion elements 22A to 22D and a convex lens 21. Note that the photoelectric conversion elements 22A to 22D
detects the upper end of the banknote (see Figure 4). Next, the circuit configuration of this embodiment will be explained with reference to FIGS. 7 to 9. FIG. 7 schematically shows the entire circuit configuration, FIG. 8 shows a detailed embodiment of the bill type discrimination circuit 37, and FIG. A detailed embodiment of the ticket discrimination circuit 39, the timing signal control circuit 40, and the batch device driving circuit 44 is shown. In FIGS. 7 to 9, each output signal from the photoelectric conversion elements 15A to 15D is appropriately amplified by phase-corresponding amplifiers 28A to 28D, and then applied to comparison circuits 29A to 29D, Each comparison circuit 29A to 29D compares it with a predetermined reference level. These comparison circuits 29A to 29
Each comparison result signal from D is applied to a latch circuit 30, to which a timing pulse TP1, which will be described later, is applied as a read drive signal. Therefore, the latch circuit 30 repeats the operation of reading and storing a new comparison result signal every time the timing pulse TP1 is applied. Furthermore, the signal stored in this latch circuit 30 is applied as 4-bit data to a lower end position determination circuit 31, and by configuring this circuit 31 in the same manner as the bill type determination circuit 37 shown in FIG. 8, which will be described later, for example, A detection block correction signal DB based on the detection of the lower end of the banknote is outputted from one of the four output terminals of the circuit 31. In this case, for ordinary banknotes, one of the comparison circuits 29A
Only the output from ~29D is output as a "1" signal, but in rare cases where the detection part of the bill is in a state where it is easily reflected by a foreign object etc., a "1" signal is output from two or more comparison circuits 29A-29D. Since there is a possibility that the lower end position determination circuit 31 outputs the output (“1” signal) of one of the comparator circuits 29A to 29D that is operating normally,
Only the following items are selected. and comparison circuit 29
When A operates normally and outputs a “1” signal,
The detection block correction signal DB is output only from the output terminal A of the lower end position determination circuit 31, and is applied to the control input terminal SC of the analog switch 33A. Similarly, comparison circuits 29B, 29
When either C or 29D operates normally and outputs a "1" signal, the detection block correction signal DB is output from the output terminals B, C, and D of the lower end position determination circuit 31, respectively. They are applied to control input terminals SC of corresponding analog switches 33B, 33C, and 33D, respectively. On the other hand, each output signal from the photoelectric conversion elements 22A to 22D passes through corresponding amplifiers 32A to 32D to analog switches 33A to 33A, one of which is activated by the detection block correction signal DB.
33D are applied to input terminals I _A to _ID , respectively. Analog signals A, output from each output terminal A, B, C, D of analog switches 33A to 33D,
B, C, and D are peak point holding circuits 34A and 34A, respectively.
The signals are input to 34B, 34C, and 34D and stored. Note that these analog signals A, B, C, and D correspond to a 500 yen note, a 1000 yen note, a 5000 yen note, and a 10,000 yen note, and this point will be described later. A timing signal TP2 from a timing signal generation circuit 25 is applied as a control signal to these peak point holding circuits 34A to 34D. Therefore, each peak point holding circuit 34A to 34D uses a timing signal
Each time TP2 is output, its contents are updated. Further, the output of each peak point holding circuit 34A-34D is sent to the first comparison input terminal of the corresponding comparison circuit 36A-36D. A predetermined reference level signal output from the level conversion switch 35 is input to the second comparison input terminals of the comparison circuits 36A to 36D. Therefore, each comparison circuit 36A to 36
In D, peak point holding circuits 34A to 34D
The input signal from the reference level signal is compared with the reference level signal. Note that this reference level signal is usually set for general circulation notes and new notes, but when discriminating and counting a heavily soiled banknote bundle, the output level of the top edge detection photoelectric conversion elements 22A to 22D decreases, and therefore the peak point holding circuits 34A to 34
Since the level of the peak point stored in D also decreases, there is a risk that the comparison circuits 36A to 36D may malfunction. Therefore, in such a case, the reference level is lowered in advance by the level conversion switch 35, thereby making it possible to carry out the comparison and discrimination operation. Each comparison result signal from the comparison circuits 36A to 36D is applied to a bill type discrimination circuit 37. The bill type discrimination circuit 37 is comprised of inverters 371-378, NAND circuits 379-385, AND circuits 386-389, and an OR circuit 390, as shown in detail in FIG. This ticket type discrimination circuit 37 includes comparison circuits 36A to 36D.
Based on the output of the comparator circuit 36Z, the card type discrimination signals KA to KD or the abnormal sending signal KZ are output. These signals KA~KD are
Different type of note discrimination circuit 39 and normal note signal control circuit 38
It is also sent to the arithmetic circuit 26 via the gate 80. The non-contact switch 7 detects each time the rotating cylinder 2 rotates and the magnetic piece 8 passes in front of it.
A synchronization pulse as shown in FIG. 10a is sent to the timing signal generation circuit 25. By the way, in a conventional banknote counting machine with a function of discriminating different types of banknotes, two non-contact switches are provided to form two types of synchronizing pulses. These old synchronization pulses are shown in Figure 10j, k.
Shown below. and one of these (Figure 10j)
was used to form timing pulses for ticket type discrimination, and the other (Fig. 10k) was used for counting (for details, see Japanese Patent Application No. 54-2216). In this embodiment, only one non-contact switch 7 is provided, and its synchronizing pulse (FIG. 10a) is used both for forming timing pulses and for counting. Specifically, the synchronization pulse of this embodiment is
As shown in a, the timing pulses TP1 and TP1 are caused to rise at the falling edge of one of the old synchronizing pulses (Fig. 10j), and in response to this rising edge, the timing pulses TP1,
TP2 is formed, and furthermore, it is made to fall at the rising edge of the other old synchronizing pulse (Fig. 10k), and a count is performed every time this falling edge, and a non-contact switch is set so as to form timing pulse TP3. 7 and the magnetic piece 8 are adjusted. The timing signal generation circuit 25 forms and outputs timing pulses TP1, TP2, and TP3 shown in FIGS. 10b, e, and f, respectively, from the aforementioned synchronization pulses. This timing pulse
TP1 is input to the latch circuit 30 as a read signal, and is generated at a timing delayed by time t1 from the rising edge of the synchronization pulse. This time t1 is set so that the timing pulse TP1 coincides with the peak of the outputs of the amplifiers 28A to 28D (FIG. 10c). Further, the timing pulse TP2 is input as a reset signal to the peak point holding circuits 34A to 34D, and is also sent to the timing signal control circuit 40. The timing signal control circuit 40 sends a timing signal P2 to a different type of ticket discrimination circuit based on this timing pulse TP2. This timing pulse TP2 is, as shown in FIG.
This occurs at a timing delayed by 2. This time t2 is the peak point holding circuit 34A to 34D.
The timing pulse TP2 is determined to occur immediately before the input of (FIG. 10g) reaches its peak. Furthermore, the timing pulse TP3 is applied to the gate 80.
and is sent to the timing signal control circuit 40. The timing signal control circuit 40 sends timing pulses P1 and TP3' to the different type of bill discriminating circuit 39 and the normal bill signal control circuit 38, respectively, based on the timing pulse TP3. This timing pulse TP3 occurs at the falling edge of the synchronizing pulse described above (at a time delayed by the pulse width t3 of the synchronizing pulse from the rising edge). By setting this pulse width t3 to a predetermined value, comparison outputs are generated from the comparison circuits 36A to 36B, and based on the comparison outputs, the ticket type discrimination signals 37A to 37D of the ticket type discrimination circuit 37 are generated. , a timing pulse TP3 is generated. Therefore, timing pulses TP3, P1
At this timing, the bill type discrimination signals 37A to 37D are compared with the normal bill signal CRD to ensure that different types of bills can be discriminated. Note that the reason why the discrimination process was made possible at a relatively early stage is that the holder 1b is provided to prevent the upper end from breaking when the bill is turned over, and as a result, the photoelectric conversion elements 22A to 22D are This is because there is no variation in the time when the peak point (correspondingly, the inputs of the peak point holding circuits 34A to 34D) reach a peak. Furthermore, since the timing pulse TP2 is generated just before the input signal starts to reach its peak, the peak point holding circuits 34A to 3
It is now possible to prevent 4D from accidentally retaining noise. The timing signal control circuit 40 includes an RS flip-flop 41, as shown in detail in FIG.
0D flip-flops 411, 412 and
It is composed of AND circuits 413 to 415.
This timing signal control circuit 40 receives timing pulses TP2 from the timing signal generation circuit 25,
Based on TP3, the timing to set a normal bill signal for detecting a different type of bill, and the timing to enable detection of a different type of bill and abnormal feeding are determined. Furthermore, this circuit 40 is a circuit that is effective from the timing pulse generated after the start of the counting operation, and is also a circuit that prevents an unnecessary different type of bill detection operation after the completion of the counting operation. Yumusuichi's
A counting completion signal CO, which is output at the time of OFF, is input to the timing signal control circuit 40. The genuine bill signal control circuit 38, as shown in detail in FIG. 9, consists of a latch 361, an inverter 362, and an AND circuit 363. This valid note signal control circuit 38 includes note type discrimination signals KA to KD,
KZ and the timing pulse TP3 from the timing signal control circuit 40 are input, and as a result, the valid note signal control circuit 38 receives the timing 1 controlled by the timing signal control circuit 40, that is, 1 in this embodiment. Any one of the signals output from the bill type discrimination circuit 37 for the first bill when timing pulse TP3 (the first timing pulse TP3 after the start) is generated after the first bill is turned over and discriminated. Ticket type discrimination signal KA~
KD is stored as a valid note signal CRD for a different type of note, and this stored first note type discrimination signal (true note signal CRD) is sent to a different type of note discrimination circuit 39 (described later), and this circuit 39 determines whether the second A comparison operation is performed for subsequent banknotes with the banknote type discrimination signals KA to KD to discriminate between different types of banknotes. In addition, if there are different types of tickets on both sides of the paper stack, the operator shall remove these different types of tickets before starting the counting operation. Furthermore, if the first banknote is abnormally fed, this is treated as an error occurrence. The different ticket discrimination circuit 39, as shown in detail in FIG. 9, includes exclusive OR circuits 391 to 3
94, OR circuit 395-398, inverter 39
9, AND circuits 400 to 403 and RS flip-flops 404 and 405. The different type of note discrimination circuit 39 receives the normal note signal.
In addition to the CRD, ticket type discrimination signals KA to KD, KZ, and timing pulses P1, P2, and P3 output from the timing signal control circuit 40 are input. As a result, this circuit 39 outputs the genuine bill signal.
After inputting and storing the CRD, the second and subsequent ticket type discrimination signals KA~KD, KZ are inputted to perform a comparison operation between these signals KA~KD and the genuine note signal CRD.
This is executed every time the second and subsequent timing pulses TP3 occur after the start of the counting operation.
If a mismatch is detected during execution of this comparison operation, a dissimilar bill detection signal DIF is output from the output terminal 43.
is output, and the OR circuit 4 of the batch device drive circuit 44
The signal is sent to one input end of 44. Further, this different type of bill discriminating circuit 39 inputs the abnormal feeding signal KZ and starts the abnormal feeding control operation from the time of performing the bill type discrimination operation for the first bill, and when abnormal feeding occurs, the output terminal 42 An abnormal feed detection signal ET is outputted from the output terminal 444, and sent to the other input terminal of the above-mentioned OR circuit 444. The different type of bill discriminating circuit 39, together with the aforementioned comparison circuit 36N, bill type discriminating circuit 37, normal bill control circuit 38, etc.
A dissimilar bill/abnormal feeding detection section indicated by reference numeral A in the figure is configured. As shown in detail in FIG. 9, the batch device drive circuit 44 includes a solenoid 441, a protection diode 442, a drive transistor 443, and an OR circuit 4.
44, a capacitor 445, a resistor 446, a rectifier circuit 447, and the like. Then, a different type of ticket detection signal DIF from the aforementioned different type of ticket discrimination circuit 39
Alternatively, when the abnormal feed detection signal ET is input to the OR circuit 444, the transistor 443 is turned on, and as a result, the solenoid 441 is driven. In this embodiment, a gate 80, an arithmetic circuit 26, a display circuit 27, and a printing circuit 41 are provided, so that discrimination counting, number of sheets, amount display, etc. can be performed. Next, the operation of this embodiment will be explained using an example in which 10,000 yen bills are counted. First, we will discuss the case of counting a banknote bundle of 10,000 yen notes that does not include different types of notes (500 yen notes, 1,000 yen notes, and 5,000 yen notes) without abnormal feeding. Next, we will discuss how to determine the banknote type and how to detect abnormal feeding. We will touch on the details of the detection and further explain the operation when a different type of ticket is turned over or abnormal feeding occurs. In FIG. 1 and FIG. 7, first, in a steady state in which banknote counting operation is not performed, the banknote bundle holder 3
are stably held at the positions farthest from the rotary cylinder 2, as shown by imaginary lines in FIG. On the other hand, when performing a counting operation, first the banknote bundle 6 to be counted is placed on the holder 3 in a predetermined state, and when this holder 3 is rotated clockwise by a predetermined angle, the banknote bundle 6 is held by the presser rod. 4 and the first
It is set at the position closest to the rotary cylinder 2 as shown by the solid line in the figure. Next, in this state, the frontmost bill is attracted and a vacuum switch (not shown) is turned on (see FIG. 10l), causing the rotary barrel to
is rotated in a predetermined direction (counterclockwise in this example) at a predetermined speed. At this time, in synchronization with the rotation of the rotary cylinder 2, each suction head 1 is moved to a position closest to the inner side surface of the banknote bundle 6, which is located above the presser rod 4.
The suction surfaces of the banknotes are opposed to each other, and the innermost banknote is turned over and adsorbed from the banknote bundle 6, and then the suction force is released and the turned-over banknote is conveyed further backward. It is rotated at a predetermined speed in the opposite direction to the rotating cylinder 2, that is, in this example, clockwise. In this way, each banknote in the banknote bundle 6, which is held in a predetermined state between the banknote bundle holder 3 and the presser rod 4, is sequentially moved one by one by the suction head 1 starting from the innermost banknote. After being turned over, the banknotes are further conveyed to the rear, and the non-contact switch 7 is closed once each time each banknote is turned over. Therefore, one counting pulse is generated each time the non-contact switch 7 is closed. It is well known to those skilled in the art that by counting these counting pulses, the number of banknotes in the banknote bundle 6 can be easily counted. In addition, as described above, each 10,000 yen note is turned up and counted by the suction head 1, but during this turning up, the lower end of each 10,000 yen note is exposed to the light projecting section 15 and the light receiving section 16. It is detected by
Further, its upper end portion is detected by a light emitter 17 and a light receiver 18. The details will be described later, but based on the detection of the upper and lower edges, a ticket type discrimination signal (10,000 yen bill discrimination signal) is generated.
KD is output from the bill type discrimination circuit 37. When the first 10,000 yen note is counted, a timing pulse TP3' is sent from the timing signal 40 to the valid note signal control circuit 38, and as a result, the 10,000 yen note is discriminated according to the first 10,000 yen note. Signal KD latches 3
61 (see FIG. 9). Then, the output from the ticket type discrimination circuit 37 is a 10,000 yen bill discrimination signal.
A different type of ticket discriminating circuit 39 determines whether the ticket is a KD or not. In this case, since all of the banknotes in the banknote bundle are 10,000 yen notes, the different type of banknote detection signal DIF is not generated, and as a result, counting of the banknote bundle continues without interruption. Next, the bill type discrimination and the abnormal feeding discrimination will be explained. The outline of this bill type discrimination and abnormal feeding discrimination is as follows. In other words, the width of banknotes currently in circulation in Japan differs depending on the denomination. Therefore, the upper and lower ends of the banknote are irradiated with light, and this light is received by the upper end photoelectric conversion element and the lower end photoelectric conversion element provided for each denomination, and based on this light reception output, the banknote type is determined. It is making a judgment. In addition, in the case of double feeding, abnormal feeding is determined by detecting a change in the light reception output caused by the double feeding. Since both the upper and lower ends of the banknote are detected, the type of banknote can be determined without error even if different types of banknotes are floating. The bill type discrimination and abnormal feed discrimination will be described in detail below. In FIGS. 1 and 7, the banknote bundle holder 3
While the banknotes in the bundle of banknotes 6 held in the banknotes are being conveyed so as to be turned over one by one by the action of each suction head 1 on the rotary tube 2, for example, the banknotes are rotated momentarily when they are attracted to the suction head 1. First, the lower end of each banknote is irradiated with the projection light 12 from the lamp 10 through the projection lens 11 according to a synchronization signal with the cylinder 2, and the reflected light 1 obtained as a result of this is
3 through the condenser lens 14 into the photoelectric conversion elements 15 (15A to 15
D) to detect the position of the lower end of each banknote, and after a slight delay, the upper end of each banknote is projected from the lamp 17 via the light projection lens 18. The light 19 is irradiated, and the transmitted light 20 obtained as a result is transmitted through a condensing lens 21.
The light is received by photoelectric conversion elements 22 (22A to 22D) provided in the light receiver 22 for each denomination through the light receiver 22,
This detects the position of the upper end of each banknote. Monitoring area 24 of photoelectric conversion elements 15A to 15D
A to 24D are shown in FIG. 6, and photoelectric conversion elements 22A to 22D are shown in FIG. How each banknote is discriminated under the detection of such an optical system will be explained below.
First, assuming that the banknote is a 10,000 yen bill that has been turned over by the suction head 1 and is irradiated by the projection lights 12 and 19 from the lamps 10 and 17, the largest amount of received light is input to the photoelectric conversion elements 15D and 22A. is obtained, and as a result, the peak point holding circuit 3 is output via the output terminal D of the analog switch 33D.
Only 4D operates and its peak point is memorized and held, thus setting comparator circuit 36D to operate. At this time, the remaining photoelectric conversion elements 22B to 22D, 15A
Although some light reception input can be obtained at ~15C, in the case of a regular 10,000 yen note, the peak point holding circuit 34A~
Comparing circuits 36A to 36C are not set to operate at the peak point level held by signal 34C. However, the comparison circuits 36A to 36C may be set to operate only in the case of a 10,000 yen note that is partially worn out. However, since the bill type discrimination circuit 37 is configured as shown in FIG. is given priority, and as shown in Table 1, in the case of a 10,000 yen note, a "1" level bill type discrimination signal (10,000 yen note discrimination signal) is sent only from the output terminal 37D.
Output KD.

[Table] Projection lights 12 and 19 from the other lamps 10 and 17
If the banknote being irradiated by is a 5,000 yen note, the combination with the largest amount of light receiving input is photoelectric conversion elements 15D to 22B or 15C to 2.
2A, the peak point is stored and held in the peak point holding circuit 34C via the output terminal C of either the analog switch 33D or 33C, and only the comparison circuit 36C is set to operate. At this time, there can be no output from the combination of the photoelectric conversion elements 15D to 22A, and the comparison circuit 36D is not set to operate. In addition, some light reception input can be obtained to the remaining photoelectric conversion elements 15A, 15B, 22C, and 22D, but in the case of a regular 5,000 yen note, the peak point is held by the peak point holding circuits 34A, 34B. At the level of , the comparator circuit 36A,
36B is never configured for operation. However, only in the case of a partially worn 5,000 yen note, the comparison circuit 36
A and 36B may be set to operate, but if the double feed detection signal is not output, the bill type discrimination circuit 37 outputs a "1" level bill type discrimination signal only from the output terminal 37C as shown in Table 1. (5,000 yen note discrimination signal) Outputs KC. In addition, if the banknote being irradiated is a thousand yen note, the combination with the largest amount of light reception input is photoelectric conversion elements 15D to 22C, 15C to 22B, 15D to
22A, the peak point is stored and held in the peak point holding circuit 34B via the output terminal B of any one of the analog switches 33D, 33C, and 33B, and the peak point is stored and held in the peak point holding circuit 34B.
Set the operation of only 6B. At this time, photoelectric conversion elements 15D to 22B, 15C to 22A, 15D to 2
There is no possibility of a combined output of 2A, and the comparator circuits 36C and 36D are never set to operate.
In addition, the remaining photoelectric conversion elements 15A, 15B, 22
Although some light reception input can be obtained at D, in the case of a regular thousand yen note, the comparison circuit 36A is not set to operate at the peak point level held by the peak point holding circuit 34A. However, the comparator circuit 36A may be set to operate only in the case of a partially worn 1,000 yen note, but if the double feed detection signal is not output, the note type discrimination circuit 37 will perform the following operation as shown in Table 1. A "1" level bill type discrimination signal (thousand yen bill discrimination signal) KB is output only from the output terminal 37B. Furthermore, if the banknote being irradiated is a 500 yen note,
The combination with the largest amount of light receiving input is photoelectric conversion elements 15D to 22D, 15C to 22C, and 15B.
~22B, 15A~22A, which causes the analog switch 33D,
The peak point is stored and held in the peak point holding circuit 34A via the output terminal A of any one of 33C, 33B, and 33A, and only the comparison circuit 36A is set to operate. At this time, there cannot be an output from a combination of other photoelectric conversion elements, and the comparison circuits 36B, 36
C and 36D are never set to operate. Therefore, if the double feed detection signal is not output, the output terminal 37 of the bill type discriminating circuit 37 as shown in Table 1.
A "1" level ticket type discrimination signal (5 million bill discrimination signal) KA is output only from A. On the other hand, the projected light 12,1 from the lamps 10,17
If two or more of the banknotes irradiated by 9 are turned over at the same time due to a malfunction of the suction head 1, regardless of the type of banknote, or due to defects such as damage, bending, or wrinkles, the banknotes may be turned over at the same time, or they may become severely soiled. In the case of abnormal banknotes, each photoelectric conversion element 1
Whether the amount of light received by 5A to 15D and 22A to 22D is significantly reduced compared to the case of regular tickets as described above,
Alternatively, when there is substantially no light receiving input, and at the level of the peak point held in each peak point holding circuit 34A to 34D, the comparison circuits 36A to 36D are not set to operate and are held in an inactive rotation state,
In addition, only the comparison circuit 36Z is set to operate and outputs a double feed detection signal. As a result, the output terminals 37A to 37 corresponding to the ticket type of the ticket type discrimination circuit 37
There is no output from D, and as shown in Table 1, only the output terminal 37Z corresponding to abnormal feed outputs an abnormal feed signal KZ of "1" level. As described above, the bill type is determined for each bill to be turned over, and the bill type discrimination signals KA to KD are output. Abnormal feeding is also determined, and the abnormal feeding signal KZ is output. Next, a case will be described in which different types of bills, for example, 500 yen bills and 10,000 yen bills are mixed in a banknote bundle. It is assumed that this 500 yen note is turned over the nth time. In this case, from the first to the (n-
1) Since the first bill to be turned over is a 10,000 yen bill, counting up to (n-1) bills is performed in the same way as in the case where the above-mentioned bills of different types are not included and there is no abnormal feeding. Also, the latch 38 of the valid bill signal control circuit 38
The 10,000 yen note discrimination signal KD is loaded in 1. After counting (n-1) bills, when the nth bill, that is, the 500 yen bill is turned over, the bill type discrimination circuit 37 discriminates this and sends a 500 yen bill discrimination signal KA. is sent to the different type ticket discrimination circuit 39. This different type of bill discriminating circuit 39 receives this 500 yen bill discriminating signal from the latch 381 of the normal bill signal control circuit 38.
It is determined that the difference is different from the 10,000 yen note discrimination signal KD read in, and a different type of note discrimination signal DIF is sent to one input terminal of the OR circuit 444 of the batch device drive circuit 44. Then, the base potential of the transistor 443 becomes high, and the base potential of the transistor 443 becomes high.
43 is turned on, and as a result, the capacitor is instantaneously discharged, and the solenoid is operated by this discharge current. That is, the separator arm 95, which was in the position shown by the broken line in FIG. are separated. Since this operation is performed by discharging in this way, it is instantaneous, and therefore counting can be reliably stopped before the next bill is turned over. After this discharge, the rectifier circuit 447 (9th
A holding current is supplied from the converter (FIG.) to keep the batch device 90 in operation. To release the batch device 90, a clear signal (not shown) may be outputted, thereby resetting the detection signals DIF and ET. Then, the solenoid 91 stops operating, and the separator arm 95 returns to the initial state shown by the broken line in FIG. As is clear from FIGS. 10a, f, and k, the timings of the counting operation (one operation of the counter, not shown) and the different types of bills and abnormal feeding in this embodiment are different from those of the previous counting operation (not shown). The timing is the same as that of one operation of the counter. Therefore, in this embodiment as well, it is clear that counting and flipping stops after the set number of sheets have been flipped in the batch mode, as in the prior art. It is also clear that after abnormal feeding or turning up a different type of bill, the counting and turning up can be stopped without turning up the next bill. In the above embodiment, the present invention was applied to a paper sheet counting machine that detects different types of bills by irradiating light onto the upper and lower ends of paper sheets, but this invention was applied to a paper sheet counting machine that detects different types of bills by irradiating light on the upper and lower ends of paper sheets. Paper sheet counting machine using other methods (i.e., a method that detects different types of bills by irradiating light only on one end of the paper sheet)
143628), this invention can also be applied to. As explained above, according to the present invention, the leaf turning process is stopped immediately after the occurrence of an abnormality, and the paper sheets that have been turned over before the abnormality occurrence are still unflipped. I try to keep it separate from the Therefore, it is possible to deal with the abnormality immediately after it occurs, such as by removing different types of tickets.

[Brief explanation of the drawing]

The drawings all show one embodiment of the present invention, and FIG. 1 is a plan view showing the main parts of the mechanism, FIG. 2 is a perspective view showing the optical system, and FIG. 3 is a holder 1b and a separator arm 95. FIG. 4 is a side view showing the arrangement of the photoelectric conversion elements 22A to 22D, FIG. 5 is a view showing the monitoring area of the photoelectric conversion elements 22A to 22D, and FIG.
7 is a block diagram showing the outline of the circuit configuration, FIG. 8 is a block diagram showing details of the bill type discrimination circuit 37, and FIG. 9 is a normal bill signal control circuit 38, a different type Ticket discrimination circuit 39, timing signal control circuit 40, and batch device drive circuit 44
FIG. 10 is a time chart showing signal waveforms at each point in FIG. 7. DESCRIPTION OF SYMBOLS 1... Suction head (suction head), 1a... Mounting plate, 1b... Holder, 2... Rotating tube, 3... Banknote bundle holder, 8... Banknote bundle, 9... Batch device, 10, 17...
Lamp, 15A to 15D... Photoelectric conversion element for lower end detection, 22A to 22D... Photoelectric conversion element for upper end detection, 34A to 34D, 34Z... Peak point holding circuit, 35... Level conversion switch, 36A to 36
D, 36Z, 36Z'... Comparison circuit, 37... Bill type discrimination circuit, 38... Genuine bill signal control circuit, 39... Different type bill discrimination circuit, 40... Timing signal control circuit, 44...
Batch device drive circuit, A...Different ticket/abnormal feed detection section.

Claims (1)

[Claims] 1. A rotating cylinder that rotates around an axis, and a rotating cylinder that is provided parallel to the axis at a position radially away from the axis, rotates while revolving around this axis, and is held in a holder by internal vacuum pressure. A suction head that counts bundles of paper sheets by suctioning and separating them one by one, and a suction head that is attached to the suction head and rotates as a unit, with the surface of the suction head that sucks paper sheets pointing in the direction of the paper surface of the paper sheets. a holder that protrudes in the rotational direction of the rotary tube when the rotating tube is oriented; a photoelectric conversion element that detects optical data about paper sheets to be turned up by the suction head; and an optical Based on the data, the bill type of the paper sheet turned over by the suction head is determined, and the signals indicating the bill types are sequentially compared to detect the mixture of different types of bills, and if different types of bills are mixed, , a different type of bill abnormal feeding determination section that outputs a different type of bill detection signal or an abnormal feeding detection signal, respectively, when abnormal feeding of paper sheets is detected from the optical data; A batch device drive circuit that drives a solenoid when a detection signal or an abnormal feed detection signal is supplied, and a batch device drive circuit that operates the solenoid that is activated by the batch device drive circuit to remove the paper sheets turned up by the suction head. A paper sheet counting machine with an abnormality determination function, comprising a separator arm inserted between the paper sheet and the paper sheet that has not yet been turned over.