JPS62206435A - Sheet paper discriminator - Google Patents

Abstract

PURPOSE:To discriminate a net loss comprehensively based on the amount of transmission light, paper thickness and overall dimensions, by detecting them presented as physical nature with respect to fouling, shrinkage and the like of a paper money. CONSTITUTION:An output of an optical pattern sensor P composed of light emitting and receiving elements proportional to the amount of a transmission light through a paper money 2 is inputted into an MPX 21 as optical pattern data DP after amplified with an amplifier 20'. It is also inputted into an integrator 22' and the resulting integrated value SP thereof is inputted into the MPX 21. Outputs of magnetic sensors M0, M1 and M2 are inputted into the MPX 21 as magnetic pattern data DM0-DM2 after amplified with an amplifier 20''. Respective analog data inputted into these MPX 21s are divided in time division in terms of data type synchronizing a clock of an encoder and converted into digital signals sequentially with an A/D converter 23 according to a pulse from an OSC. Then, they are read into a CPU 19, which compares and collates the signals with reference data of a memory 24 to judge authenticity, money type and net loss and outputs a judgement signal (J).

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] 15 The present invention relates to a discriminating device built into an automatic processing device for paper sheets 1, for example, banknotes, and for determining the authenticity and fitness of a single banknote.

[Conventional technology]

In the conventional device, as described in Utility Model Publication No. 57-44429, a rotatable roller is first supported by one end of a detection/lever, and conveyed by contacting the roller.

The detection lever moves according to the paper thickness of the banknote, and the thickness is detected by a sensor installed at the other end.

After using the detection mechanism to check for stacked banknotes and modified 5th-grade tickets with cellophane tape attached, it was determined that the actual number was 1985-49272.

Due to the light and magnetic patterns from a single banknote, like the number.

After determining the authenticity and denomination, the amount of transmitted light is determined.

Check out the external dimensions of the dog to see if it has folded ears.

I was judging the loss notes. However, there are stains on unfit notes.

It wasn't that bad, but it broke due to fatigue during the distribution process.

There are many scratches and wrinkles, and there are some stains, but it is still a mark.

Since the banknotes were first printed, the paper was thin, so they were transparent.

There are many unfit notes whose light intensity does not decrease significantly. .

[Problems to be Solved by the Invention] 15. In the above-mentioned conventional technology, there was almost no function to detect unfit notes, so automatic machines were used to process the deposit.

Before setting the banknotes that have been processed and determined to be valid into an automatic machine as banknotes for withdrawal, the clerk must visually check the banknotes and remove the unfit banknotes, which takes 2 degrees of effort.

In view of the above-mentioned circumstances, it is an object of the present invention to prevent the above-mentioned unfit notes from being deposited, which may cause jams during the withdrawal process and during transportation, or may cause discomfort to the customer after being released.

At the time of processing, all bills are sorted and collected by an automatic machine, and only 5 suitable bills are placed in the safe as bills for withdrawal.

A high-performance, labor-saving machine that processes withdrawals by clicking on the button.

It is about providing motivation.

[Means for solving problems]

The above purpose is to detect the amount of light transmitted through a sheet of paper.

A sensor and a thickness detection sensor that detects the paper thickness.

Pre-configured for the signals from both sensors above.

a memory for storing standard data set forth above;

Output signals of both sensors and standards in memory above.

This is accomplished by a central processing unit that receives data, compares the relationship between each signal and the data, and (5) discriminates whether the paper sheet is unfit or damaged.

[Effect]

The discrimination device according to the present invention detects dirt on one banknote.

For wrinkles, shrinkage after washing, etc., it detects the amount of transmitted light that appears as physical properties.1 The paper thickness, external dimensions, and dimensions are detected, and based on these, the fitness is determined comprehensively. Banknotes that should be damaged are no longer mistakenly judged as genuine, improving the reliability of the judgment.

will improve. 5 [Example] An example of the present invention will be explained below with reference to FIG.

do. Figure 6 shows the setup of a recycling-type automatic banknote processing device.

A side view of the main body 1 is shown.

The recycle method is a method in which the deposited 1° banknote is used as is when withdrawing money.

In this embodiment, deposits can be made in 3 denominations of 10,000 yen, 5,000 yen, and 1,000 yen, but withdrawals can only be made in one denomination of 10,000 yen.

It is a place.

As for the structure of the main body 1 of the device, on the upper left side there are a customer 5 and a deposit slot 6 for receiving and passing banknotes 2. and a withdrawal port 4 are provided. A discrimination device 5 is located in the center of the upper part, and a thickness detection sensor To
, installed with built-in T1.

The authenticity and fitness of the banknotes 2 fed into the conveyance path 7 from the deposit port 3 are sequentially determined. 2゜・6・As a result of the determination, the banknotes 2 to be rejected are rotated to the upper conveyance path 7' by the gate 8, and the banknotes 2 determined to be genuine notes are rotated to the lower conveyance path 7. It will be.

A safe 9. 5 collection boxes 1 on the left side
0 is placed and is being conveyed through the conveyance path 7''.

The 10,000 yen notes that can be returned are placed in a safe at Gate 8'.

9. Lost notes of 10,000 yen, 5,000 yen, and 1,000 yen that cannot be returned are a game.

8'' and are stored in the collection box 10.

Withdrawals will be processed in accordance with customer requirements, with the required number of 10,000 coins.

The yen is sequentially delivered from the safe 9 to the conveyance path 7'' for identification.

After checking again in device 5, it is released via the conveyance path.

The money will be withdrawn to exit 4.

FIG. 4 shows the sensor arrangement of the discrimination device 5 and shows the percentage (α).

(h) shows a front view, and (h) shows a plan view. Se of identification device 5, 5
From the front, there are five sensors: passage detection sensor S, thickness detection sensor To, T+, optical pattern sensor 2% width detection sensor An, A1. The magnetic sensors Mo, M+, and M2 are arranged in this order. The banknote 2 is rotated by rollers 12, 12', 12 to which rotational force is applied by a drive belt 11.
.

・　4　・ The objects are conveyed sequentially between the center and the center.

Although not shown in this figure, an encoder is directly connected to the roller 12, which generates a crookedness proportional to the conveyance speed of the banknote 2.

The arrangement of the thickness detection sensors To and T1 is 5 banknotes 2-45
Left and right symmetry avoiding the fold line (in Figure 4, the top and bottom pair).

The spring 16 keeps the roller 12 in the correct position.

It is composed of a magnetic sensor 14 that is in pressure contact with each other. Low 2°12
The material is small (the surface can be made of magnetic material).

A magnetic circuit is formed with the opposing magnetic sensor 14.

is forming. The banknote 2 has a magnetic sensor 14 and a roller.

One banknote 2 is conveyed while being held between the two banknotes 12 and 12.

The magnetic sensor 14 moves up and down in accordance with the paper thickness.

This makes the magnetic resistance of the magnetic circuit proportional to the paper thickness.

and increase. Therefore, the detected increase amount becomes a value corresponding to the paper thickness of 15 and 20 banknotes.

FIG. 1 is a block diagram showing the circuit configuration of the identification device 50. Note that there are multiple identical sensors.

If the signal processing is also the same, one circuit is partially omitted from the illustration. . .

The passage detection sensor S composed of a light receiving and emitting element detects the entry into the discrimination device 5 by a comparator 16, inputs the passage information to the control circuit 17, and also operates a counter while the banknote 2 is passing. At step 18, the number of clocks from the encoder 26 is counted, and the short dimension 5XL is output to the CPU 19. CPU 1q is in the center.

A computational processing device processes the signals from each sensor.

do.

On the other hand, the single width detection sensors Ao and Ay+ are arranged in an array.

photodiode and the light □ that illuminates it.

It consists of a source (none of which is shown) and is passing through.

Calculate the number of photodiodes blocked by banknote 2.

Detected by comparator 16 and counted by counter 18 to 0%
Output the longitudinal dimension XL to CPU'19.

The output of the thickness detection sensor To, T+ is increased by the amplifier 20, the width is increased by 5, and 1 paper thickness data 1) To, DT+ as M.
While it is input to the PX (multi-bleph sensor) 21, it is also input to the integrator 22, and it is integrated from the start to the end of the passage of the banknote 20, and the integral values 5TI) and 15TI are also input to the MPX 21.
is input.

Damaged notes have the property of becoming thicker than new notes due to folds, wrinkles, etc. that occur during the circulation process, which causes the paper to swell and become thicker than new notes. In general thickness detection, subtle differences in paper thickness cannot be detected due to roller eccentricity or play in the detection lever.Also, due to the inertial force between the roller and the detection lever The detection lever can faithfully follow changes in paper thickness as it is transported at high speed.

It disappears. In the above embodiment, through the detection lever.

The detector can directly measure paper thickness accurately.

Ru. Optical pattern sensor P composed of 1° light receiving and emitting elements.

The output proportional to the amount of light transmitted through one banknote 2 is also amplified by the amplifier 20' as in 6 above, and then converted into optical pattern data.

It is input to the MPX 21 as DP. Also an integrator.

22, and this integral value SP is also input to MPX21, 5
Man-powered.

The outputs of the magnetic sensors MO, Ml, and M2 are also output by the amplifier 20.
After amplification, the data is input to the MPX 21 as magnetic pattern data DM O-DM2.

Each analog data input to these MPX21 7
・The data is synchronized with the encoder clock, divided into time divisions for each data type and type, and A is processed according to pulses from O20.
After being sequentially converted into digital signals by the /D converter 23, the signals are read into the CPU 19. - In the C-U19, the read data is compared and verified with the standard data stored in the memory 24, and the result is true.

It determines whether it is a fake, the denomination, and whether it is good or bad and issues a 1-discrimination signal J.

live.

FIG. 5 shows the payment processing operation of the discrimination device 50.

It is a flowchart. From deposit port 3 to conveyance path 7I.

The banknotes 2 are sequentially fed out (step 101).

First, the paper thickness is checked by the thickness detection sensor TOIT1.

(step 102). Strange thing about cellophane pasting.

In step 106, the modified ticket or the overlappingly conveyed banknote is determined to be a non-standard 1° banknote based on the paper thickness data DTo, DTl, and is conveyed to the discharge port 4 to be returned to the customer. On the other hand, the short dimension XL was read.

From the longitudinal dimension YL, the external dimensions of the banknotes 2 are checked in step IQ4.105, and banknotes conveyed in series and banknotes with folded edges at the four corners are rejected in the same way as described above.

Next, optical pattern data DP and magnetic pattern data D
According to MO to DM2, the authenticity and denomination are determined by the steering knobs 106 and 107, and the 5,000 yen and 1,000 yen are collected and stored in the box 10. Also, five bills with too low transmitted light are considered to overlap and are rejected.

Ru. Furthermore, the bill 2 determined to be worth 10,000 yen is transmitted light.

The integral value of quantity SP and the integral value of paper thickness 8To, STt.

From this, the fitness is determined.

Fig. 2 shows the criteria for determining fitness, and the horizontal axis.

is the integral value of paper thickness STo+ST1. The vertical axis is the amount of transmitted light.

is the integral value SP. There are four permissible ranges for genuine notes.

This is the central part of the graph separated by limit lines. first.

The integral value of paper thickness STo+ST1 is the lower limit value TL or the upper limit.

If it is more than the limit value TH, it is rejected as 1 paper thickness abnormality and 5 is given. The loss is the integral value SP of the amount of transmitted light and the integral value STo of paper thickness.
The determination is made using the following determination formula showing the relationship with +ST1.

(1) A・(8TO+8T1)+BH<SP□Rigift (too bright) (2) A・(STo+5T1)+Bp<SP≦A
-(STO+5T130BH□Good note ・(3)A・(STO+ST1)+Bt, < S P
≦A・(STO+S'I'1)・10BP □Unfit note
・ (4) SP≦A(8To +ST1) 10Br,
5□ Reject (too dark).

Here, the slope A is the integral value SP of the same amount of transmitted light.

Also, thinner banknotes are judged to be damaged than thicker ones.

This is a correction coefficient to make it easier.

Note that the 5 discrimination signal J is for each mechanical part (not shown). #l↓0 is sent to the control section and controls each mechanical section via this control section.

By driving the banknotes based on the results of 1 discrimination.

Necessary parts (e.g. safe, collection box, outlet).

Transport to.

[Effects of the invention] 15 As detailed above, the present invention has the following effects.

(1) Since the device itself reliably determines unfit notes, there is no need for visual checks, speeding up processing and saving labor.

(2) Wrinkled banknotes and weak unfit notes are reliably stored in the collection box, eliminating jams in the temporary stacking section and the dispensing/dispensing section, improving the reliability of the device. improves.

4. Brief explanation of drawings 5.1
The figure is a block diagram of the circuit configuration, and Figure 2 is the correct one.

The loss determination standard diagram, FIG. 3, is an example of an embodiment of the present invention.

A configuration diagram of an automatic banknote processing device incorporating a separate device.

Fig. 4 is a front view and a plan view of the sensor arrangement, and Fig. 5 is a plan view.

is a flowchart of deposit processing operation. 1゜2・
...Banknote, 5...Identification device, To, T+...
Thickness detection.

Sensor, P... Optical sensor, 19... Central processing unit.

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Claims (1)

[Claims] A paper identification device built into an automatic paper processing device that determines the authenticity, integrity, etc. of paper sheets includes an optical sensor that detects the amount of light transmitted through the paper sheets and a sensor that detects the paper thickness. A thickness detection sensor, a memory that stores preset standard data for signals from both of the sensors, and a device that receives the output signals of both of the sensors and the standard data in the memory and compares the relationship between each signal and the data. Paper leaf identification device consisting of a central processing unit that distinguishes damaged paper sheets from paper sheets.