JPS5853797B2 - Authenticity determination method for banknotes - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a method for determining the authenticity of banknotes, and in particular, for example, for determining banknotes whose length is extremely shorter than the proper length of a banknote inserted into a coin handling machine. Concerning the method for determining authenticity.

2. Description of the Related Art Conventionally, banks and the like have been equipped with money handling machines such as bill exchange machines and automatic deposit machines.

This currency handling machine is provided with a pill checker that determines whether or not the banknotes inserted into the banknote slot by the customer are proper banknotes, that is, the authenticity of the banknotes.

FIG. 1 is a schematic mechanical diagram of a pill checker for determining the authenticity of banknotes, which is the background of this invention and to which an embodiment of the present invention is applied, and FIG. 2 is a schematic diagram of a pill checker included in the pill checker of FIG. FIG.

The conventional authenticity determination method will be described below with reference to FIGS. 1 and 2.

When a customer inserts banknotes 11 from the banknote insertion slot 21 in the direction of arrow A, the banknotes 11 are conveyed by rollers 23a to 23b driven once by the motor 12 on the belt 22a.

22b and conveyed.

Then, the width of the banknote 110 is detected by the width detectors 24a and 24b, and the width of the banknote 110 is detected by the arrow A by the shutter roller 25.
transported in the direction.

The shutter roller 25 prevents foreign objects other than the banknotes 11 from being inserted into the insertion slot 21, and is driven by the motor 12.

The banknotes 11 that have passed through the shutter roller 25 are sent to the detector 26
It is detected whether the bill is a four-folded bill or not.

The banknote 11 that has passed the detector 26 is transported at a constant conveyance speed by the presser roller 27, and then passed through the length detectors 28a, 28.
The length of the banknote 11 is determined by the combination of b and 28c.

Furthermore, the pattern on the surface of the banknote 110 is detected by the pattern detector 2.
Detected by 9.

The pattern detector 29 includes transmission amount detectors 29a and 29b that detect the amount of light transmitted when the banknote 11 is irradiated with light, a color tone detector 29c that detects the color tone of the surface of the banknote 11, and a pattern detector 29c that detects the color tone of the surface of the banknote 11. A magnetic detector 29d detects the magnetic side contained in the paint.

Further, in order to generate a pulse signal synchronized with the transport speed of the banknote 11 in relation to the motor 12, a pulse signal generator 13 consisting of a disk 13a and a sensor 13b is provided.

Banknote i whose authenticity has been determined by the banknote discrimination unit 2
i+'b The banknotes are transferred to the temporary banknote storage section 14.

The bill temporary storage section 14 is provided with a drum 141 driven by a motor 15, and a bill sorting lever 142 is provided in relation to this drum 141.

When the banknote 11 inserted by customer Q is determined by the banknote discriminator 2 to be not a proper banknote, the banknote sorting lever 142 contacts the surface of the drum 141 and transfers the banknote 11 through the banknote transport unit 151. from return gate 18 to arrow B
Return it in the direction.

If the banknote 11 is a proper banknote, the banknote sorting lever 1
42 is separated from the surface of the drum 141, and the banknote 11 is temporarily stored inside the drum 141.

Then, when one customer finishes inserting the banknotes 11 in hand, the banknote sorting lever 142 comes into contact with the surface of the drum 141 and transfers the temporarily stored banknotes via the banknote transport section 151.

When the banknotes 11 transferred by the banknote transport section 151 reach the position of the cash box 16, the banknote storage rod 1
7 causes the banknotes to be collected in the cash box 16.

As described above, in the conventional banknote authenticity determination system, the banknote length detector 28 for detecting the length of the banknote is provided, and the banknote length detectors 28a, 28b.

The length of the banknote 11 is determined by a combination of the presence or absence of banknote detection 28c, and the pattern of the banknote 11 is always read by the pattern detector 29 even if the banknote is extremely short.

Then, the banknote 11 is returned through the return slot 18 via the banknote transport section 15.

Therefore, even when the length of the banknote 11 is not appropriate, it is always determined whether or not the pattern of the banknote 11 is appropriate, which poses a problem in that it takes a long time to perform the determination.

SUMMARY OF THE INVENTION Therefore, the present invention provides a bill authenticity determination method that has a simple configuration and allows the bill to be immediately returned from the bill insertion slot when a defective bill with an extremely short length is inserted. The purpose is to

In summary, when a banknote is inserted into a banknote insertion slot, the insertion of the banknote is detected by a first banknote detection means, When the first detection means no longer detects the presence of banknotes before the second Q banknote detection means detects the presence of banknotes, and the second banknote detection means detects the presence of banknotes. Later, when the second bill detecting means stops detecting the bill before the third bill detecting means provided ahead of the second bill detecting means detects the pattern of the bill, the second bill detecting means further detects the bill. Comparing the output of the counting means when the banknote detection means no longer detects the presence of banknotes with a predetermined value, and in response to the output of the counting means being less than or equal to the predetermined value, reversing the banknote conveying means; The banknotes are returned through the insertion slot.

The present invention will be described in more detail below along with embodiments shown in the drawings.

FIG. 3 is a block diagram of one embodiment of the present invention.

In the configuration, a detector 24a serves as a first detection means for detecting the width of the banknote 110.

Each output of 24b is connected to an amplifier 31a.

31b and is amplified, then the AND gate 32
The signal is applied to the control circuit 33, the shutter roller 25 and the motor 12 as an ON signal, and is also applied to one end of the AND gate 36.

The shutter roller 25 is given an off signal from the control circuit 33, and the motor 12 is given a stop signal and a reverse rotation signal from the control circuit 33.

The output of the detector 26 as a second detection means for detecting the four-folded banknote is sent to the AND gate 3 via an amplifier 34.
6 and the inverter 37
The signal is applied to the control circuit 33 via.

The output of the AND gate 36 is the control circuit 33 and the timer circuit 3.
8 and given.

The timer circuit 38 counts the maximum time required for the banknote 11 to pass through the banknote discrimination section 2, and when the counting output matches the maximum time, a time-up signal is sent to the control circuit 3.
Give to 3.

The output of the sensor 13b included in the pulse oscillator 13 is applied to one input terminal of an AND gate 40 via an amplifier 39.

The output of the AND gate 40 is given to a counter 41 and a quaternary counter 42.

The counter 41 counts pulse signals in order to detect the length of the banknote 11, and its counting output is sent to the control circuit 3.
3 and register 43.

Note that this count output is also used as address designation for storing read data in the memory 45.

This is from the quaternary counter 42. The X,'O register 43 stores the counted value of the counter 41 based on the output of the four-fold bill detector 26, and gives the stored output to the control circuit 33. .

The output of the quaternary counter 42 is also provided to a decoder 44 to identify each of the pattern detectors 29.

The timer circuit 38, counter 41 and quaternary counter 42
A reset signal is given at an appropriate timing.

The respective outputs of the transmission amount detectors 29 a and 29 b included in the pattern detector 29 as the third banknote detection means are provided to an AND gate 48 and a multiplexer 49 via amplifiers 46 and 47 .

The output of the AND gate 48 is applied to the other input terminal of the AND gate 40 and the control circuit 33 .

Furthermore, a color tone detector 29 included in the pattern detector 29
The outputs of the magnetic detector 29d and the amplifier 50
, 51 to the multiplexer 49.

The output of the quaternary counter 42 is decoded by the decoder 44 and applied to the multiplexer 49 .

The multiplexer 49 selects each of the pattern detectors 29a-29d based on the output of the decoder 44.
is specified and its output is given to the A-D converter 52.

The A/D converter 52 converts the output signal of the detector selected by the multiplexer 49 into a digital value and supplies it to the control circuit 33.

The memory 45 includes an area 451 for storing length data of a regular banknote, an area 452 for storing a model pattern of a regular banknote, and an area 453 for storing pattern data read from the banknote 11.

FIG. 4 is a flow diagram for explaining the operation of one embodiment of the present invention.

Next, the specific operation of one embodiment of the present invention will be described with reference to FIGS. 1 to 4.

When the power is turned on, the timer circuit 38, counters 41, 4
The advance counter 42 and the like are initially reset.

When the customer inserts the banknote 11 into the insertion slot 21 of the banknote discriminator 2, the width detectors 24a and 24b detect that the banknote 11 has been inserted, and send the outputs of the respective detectors to the amplifier 3.
1a.

31b to the AND gate 32.

The AND gate 32 provides the control circuit 33 with a pie level (hereinafter referred to as "H") signal that specifies that the bill 11 has been detected when the detectors 24a and 24b are turned on at the same time.

Further, the AND gate 32 operates a clutch (not shown) to drive the shutter roller 25 and causes the motor 12 to rotate in the normal direction.

Thereby, the banknote 11 is transferred into the banknote discrimination section 2.

Then, when the four-fold bill detector 26 detects the bill 11,
The rHJ signal is applied to an AND gate 36 via an amplifier 34, and is inverted by an inverter 37 and applied to a control circuit 33.

The AND gate 36 is the detector 24a. Based on the fact that 24 b and 26 detect the banknote 11 at the same time, the rHJ signal is given to the control circuit 33 and the timer circuit 38 is activated.

Thereby, the timer circuit 38 starts counting the maximum time required for the bill to pass.

If the banknote 11 inserted into the insertion slot 21 is a counterfeit banknote and its length is extremely shorter than a proper banknote, when the detector 26 detects the banknote 11, the detector 24 a
, 24b has already stopped detecting the banknote 11.

This means that the output of the AND gate 32 is at a low level (hereinafter referred to as "L") before the output of the inverter 37 is at a low level.
).

Note that when the detector 26 detects the banknote 11, the output of the inverter 37 becomes ILJ.

In response, control circuit 33 determines that the bill is extremely short and reverses motor 12.

Therefore, extremely short banknotes will be returned through the insertion slot 21.

At this time, when the detectors 24a and 24b detect that the banknotes to be returned have been returned from the input slot 21, the control circuit 33 stops the motor 12 and stops the shutter roller 2.
5 is stopped.

Then, the control circuit 33 ends the operation for identifying the banknote when the detectors 24a and 24b no longer detect the banknote 11, that is, when the banknote is removed.

If the banknote 11 inserted into the insertion slot 21 is not an extremely short banknote such as a four-fold banknote, the control circuit 33 determines whether the detector 26 detects the banknote 11 and inserts the banknote 11 into the slot. If not detected, the motor 12 is reversed.

Then, the control circuit 33 detects a jam in the middle of whether or not the timer circuit 38 has derived a time-up output, and if there is a time-up signal, reverses the motor 12, and if the time-up signal is not present, the pattern detector 29 detects a jam. It is determined whether the transmitted amount detectors 29a and 29b detected the banknote 11 or not.

Therefore, in this routine as well, the transmission amount detectors 29a, 2
Before the detector 9b detects a banknote, it is checked to see if the detector 26 no longer detects a banknote, and extremely short foreign objects are removed.

That is, from the detector 26 to the transmitted amount detectors 29a, 29
Even if the banknote is shorter than the length up to b, it will be returned through the insertion slot.

When the banknote 11 reaches the device of the pattern detector 29, the transmission amount detectors 29a and 29b detect the banknote 11 and provide their respective outputs to an AND gate 48 and a multiplexer 49 via amplifiers 46 and 47.

In response, the AND gate 48 sends the “H” signal to the control circuit 33.
and give it to ANDGATE 40.

The AND gate 40 has one input terminal supplied with the output of the sensor 13b that detects the rotation of the disk 13a linked to the motor 12 via the amplifier 39, so that a pulse signal is sent to the counter 41 and the quaternary counter 42. give.

A counter 41 and a quaternary counter 42 each count the nox signal.

The output of the quaternary counter 42 is decoded by a decoder 44 to select one of the pattern detectors 29a to 29d provided to a multiplexer 49.

The selected pattern output is then converted into a digital value by the A-D converter 52 and provided to the control circuit 33.

Note that the counter 42 is omitted and the lowest 2 of the counter 41
The same effect can be obtained even if the digit output is inputted to the decoder 44.

In the control circuit 33, the transmission amount detectors 29a and 29b are connected to the banknotes 11.
It is also determined whether the timer circuit 38 is deriving a time-up signal when the time-up signal is detected.

That is, a jam is detected at each processing step by determining time-up in each processing loop.

When there is no time-up signal, the detector 26 detects the banknote 11.
Determine whether or not it is detected.

Therefore, in these two steps, in a normal case where the banknotes 11 do not jam, etc., the banknotes 11 are conveyed and the detector 26 no longer detects the banknotes.
Ru.

Then, based on the count value of the counter 41 at this time, it is determined whether the banknote 11 is too short.

To explain this pattern according to FIG. 3, when the detector 26 no longer detects the bill 11, the output of the inverter 37 changes to
”, which causes the register 43 to change to the counter 4.
1 count value, that is, the length data of the banknote 11,
It is given to the control circuit 33.

The control circuit 33 compares the length data of the banknote 11 given from the register 43 with the model length data stored in the area 451 of the memory 45, and then determines whether the banknote 11 is too short.

This model length data is the transmission amount detector 29a.

29b is the count value that would be counted by the counter 41 while detecting the presence of a proper banknote, and therefore, the value of the register 43 is naturally smaller than the model length data.

That is, at the time the register 43 stores, the detection 26
This is because the counter 41 has not yet counted the portion of the paper surface corresponding to the length from the transmission amount detectors 29a and 29b.

Considering these circumstances, when comparing both length data, it is determined whether the length data of the banknote 11 stored in the register 43 is within an allowable range compared to the model length data. inspect.

This can be done, for example, by determining whether the difference between the model data and the value in the register 43 is less than a predetermined value, or whether the value obtained by dividing the value in the register 43 by the model length data is greater than or equal to a predetermined value. All you have to do is judge.

Alternatively, the minimum allowable length may be stored in the area 451 of the memory 45 separately from the model length data.

Note that the optimal count value and tolerance may be stored for the model length data, and the minimum and maximum count values when the appropriate banknote length is counted by the counter 41 may be stored. As described above, in this embodiment, the final judgment as to whether or not the banknote 11 has an appropriate length is made when the permeation amount detectors 29a and 29b no longer detect the banknote 11. This is done based on the count value of the counter 41 when the banknote 11 is detected, but before that, at each stage of processing, it is determined whether the banknote 11 is extremely short based on whether or not each detector detects the banknote 11. I have to.

At this time, if it is determined that the banknote 11 is extremely short, the motor 12 is reversed to transport the banknote 11 in the direction of the input slot 21, and when the banknote 11 passes the detector 26, the motor 12 The shutter roller 25 is stopped.

The determination that the detectors 24a and 24b are turned off is based on the detection of the removal of banknotes.

In the above-mentioned step of determining whether the banknote is extremely short, if it is determined that the banknote 11 is not extremely short,
It is again determined whether or not the jam detection, that is, the timer circuit 38 has derived a time-up signal.

If the time amplifier signal drops, the transmission amount detectors 29a, 2
It is determined whether or not the banknote 9b is detecting the banknote 11, that is, whether the output of the AND gate 48 is rLJ.

If the output of the AND gate 48 is not ITLJ, the above steps are looped and waited until the banknote 11 passes the positions of the detectors 29a and 29b, and when the passage is detected, the counter 41 stops counting. The counted value of the counter 41 and the length data 451 are compared, and it is determined whether the banknote 11 is within an appropriate range by comparing with the standard length data.

When the banknote 11 is thrown at an appropriate length, the banknote 11 is returned from the return port 18 via the banknote conveying section 151.

In this case, the banknotes to be returned from the return slot 18 are banknotes 1
1 has passed through the permeation amount detectors 29a and 29b, all the detectors 29 have already almost finished reading the banknote pattern, and from the point of view of protecting the detectors 29 from foreign objects, reverse conveyance is not necessary. There is no point in returning the banknotes from the input slot, and if the banknotes are conveyed in reverse, the presser roller 2
This is because there is a strong possibility that a jam will occur at point 7.

If the length of the banknote 11 is appropriate, the read data stored in the area 453 of the memory 45 is compared with the model pattern previously stored in the area 452 to determine whether the banknote pattern is appropriate.

If the banknote pattern is appropriate, the banknote 11 is returned from the return port 19 via the banknote transport section 15, the motor 12 is stopped, and the drive of the clutch is stopped to stop the rotation of the shutter roller 25.

If the pattern of the banknote 11 is normal, the banknote 11 is temporarily stored in the banknote temporary storage section 14.

Then, in the same manner as described above, the length and pattern of the banknotes 11 inserted from the slot 21 are detected, and appropriate banknotes are stored in the temporary banknote storage section 14.

When all banknotes 11 have been inserted, the banknote temporary storage section 14
transfer the banknotes temporarily stored in the banknote transport section 15,
The banknote storage rod 17 is energized to collect banknotes into the cash box 16.

As described above, according to the present invention, when it is detected that an extremely short banknote has been inserted, the banknote is immediately returned from the insertion slot without having its pattern read any further. Not only can the determination time be shortened, but also the detector 29 can be protected from malfunctions caused by being assigned to read defective banknotes such as counterfeit banknotes and altered banknotes.

In addition, the length of the banknote can be determined by counting the pulse signals from the pulse generator only during the period when the banknote passes the position, without installing a special detector to detect the length of the banknote. Therefore, the configuration can be simplified.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a banknote authenticity half-turn q machine which forms the background of the present invention and to which an embodiment of the present invention is applied. FIG. 2 is a schematic plan view of a bill discriminating section included in the bill authenticity discriminating machine of FIG. 1. FIG. 3 is a block diagram of one embodiment of the present invention. FIG. 4 is a flow diagram for explaining the operation of one embodiment of the present invention. In the figure, 11 is a banknote, 12 is a motor, 13 is a pulse oscillator, 21 is an inlet, 22 is a banknote discriminator, 24a, 2
4b, 26, 29a, 29b. 29c, 29d are detectors, 25 is a shutter roller, 2
7 is a presser roller, 38 is a timer circuit, 41 is a counter,
42 is a quaternary counter, 43 is a register, 44 is a decoder, 45 is a memory, 49 is a multiplexer, 52 is A-D
Converter, 33 indicates a control circuit.

Claims (1)

[Scope of Claims] 1. A banknote authenticity determination system for determining whether a banknote inserted into a banknote insertion slot is a proper banknote, the system being provided in relation to the banknote insertion slot, a first banknote detection means for detecting that a banknote has been inserted into the banknote insertion slot; a banknote conveying means for transporting the banknote in response to the output of the first banknote detection means; Provided at the front in the conveyance direction,
a second banknote detection means for detecting the presence of inserted banknotes, provided ahead of the second banknote detection means in the transport direction;
a third banknote detection means for reading a pattern of the banknote; a pulse signal generation means for generating a pulse synchronized with the transport speed of the banknote; and a third banknote detection means detecting the presence of the banknote. a counting means for counting the output of the pulse signal generating means in accordance with the above, and after the first banknote detection means detects the presence of the banknote, the second banknote detection means detects the presence of the banknote. before the first banknote detection means detects the presence of the banknote, and after the second banknote detection means detects the presence of the banknote, the third banknote detection means detects the presence of the banknote. The second banknote detection means stops detecting the presence of the banknote before detecting the presence of the banknote, and the counting is performed when the second Q banknote detection means no longer detects the presence of the banknote. The banknote truer is configured to compare the output of the counting means with a predetermined numerical value and, in response to the output of the counting means being less than or equal to the predetermined numerical value, reverse the banknote conveyance means and return the banknote from the insertion slot. False discrimination method.