JPS5886683A - Paper-like matter discriminator - 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 The present invention relates to a method for discriminating paper-like objects, such as the paper-like object, for determining whether the banknotes are genuine or not, in an automatic cash machine such as an automatic teller machine.

In recent years, automatic teller machines have been introduced to automate Iso bank transactions, and in response, self-deposit Iso banks have also been introduced.
Currently, the commonly used method involves inserting banknotes one by one in the longitudinal direction, which has the advantage of making it easy to control the direction when inserting banknotes. Furthermore, there is a demand for an improved automatic deposit box that can be loaded all at once as shown in Figure 1. That is, in FIG. 1, a deposit port (4) consisting of a rotatable cover (2) and a storage box (3) is provided on the front surface of the housing (1), and the customer can access the storage box (3). ) - Line tickets (heat)... are to be inserted in a bundle while standing.

Then, the nine-line tickets (e)...'... are thrown into the rear of the storage box (3) one by one, and the Guri (5)...
...and fIg4411-shaped belt (6)...
An intake rotor 8) is provided for intake into a conveying path (7) which is constructed according to the invention. That is, there is a true g! (not shown) on the outer peripheral surface of the intake rotor (8). A slow suction rod (8) is drilled in the source, and the rotor (8) rotates counterclockwise as indicated by the arrow, so that the above-mentioned - line ticket +1
)... are taken in by vacuum suction one by one starting from the earliest one.

In addition, 1. In the middle of the E period conveyance path (7), there is a light projection (9a).
Detection j! consisting of and light receiving element m (9b)! ! ! Isamu Okihikari is placed and performs the Yumashi judgment, the counting, and the truth/falsity judgment of -Takeyume ta) in the *feeding route (7).

Furthermore, the above-mentioned conveyance # (7) is divided into a main conveyance NI (1oa) and a IIIL conveyance path (xob), and at one point there is, for example, a rotatable dividing gate aυ with a rotary lenoid as the drive lIb#. provided, i.e.
The above detection device (signal from residence 1IIlj#IJ
If the banknote is a valid banknote, it will be guided to the Wangfu route (log), and if it is a fraudulent banknote, the banknote will be guided to the Bungeikama route (10b) via a section (not shown). ing.

Thus, the correct banknotes (II) fed into the first bank passage (XOa) are accumulated at the horizontal cliff in the nine banknotes MtI provided at the terminal end.

In addition, the back-up board of the upper FmμI cable on which the uiFi-gyo-sen (a) is placed is supported by the shaft weight ◆ on one side, and is controlled to move 4 points in sequence according to the amount of easy horizontal movement of the banknote-). has been done.

On the other hand, the fraudulent banknote (a) sent into the branch conveyance path (10b) is sent to the return port U-saki where the last four copies face the front of the case (1), and the fraudulent banknote (a) is sent to the It is now possible to return the product to the customer.

Devices for determining whether banknotes are correct or not have been proposed one after another, but most of them are based on optical methods.One example is the identification of a pattern printed on a banknote. , detect the reflectance, transmittance, color, etc. at that part and check whether the detected value matches the reference value or not, or if it is ``0'' or ``1# signal The method of determining whether or not the pattern obtained by changing the Kll matches the standard pattern is failing.

Therefore, in the t7j method, the Fi reference value or reference pattern is fixedly set in the device in advance, and this reference value and the detected value or pattern are compared.

However, in the conventional method, the reference values or the four quasi-patterns are fixed, so if you change the detection location and the patterns of the banknotes are round or the patterns of the banknotes are mixed together, you have to change these reference values or the reference patterns. In reality, there are many cases where it is difficult to change these things, and even if you can change them, 4 No. 11! II got tired and I found it troublesome.

Furthermore, dust and dirt accumulate on the detection device over time.
Since the luminous intensity of the light projector decreases over time, the detection device must be periodically cleaned and adjusted. Moreover, since the detection devices vary individually, their adjustment is extremely troublesome and small.The present invention was made based on the above circumstances, so a normal paper-like object is prepared in advance, and the paper-like #lJ object to be discriminated is detected. The detector for the above 1 lonely paper-like l1
Detect the ljl amount, store the detected gI number in the reference amount storage device, and use the above detector (
(By detecting the object of the paper-like object to be discriminated and comparing the detection signal of the object with the detection signal of the normal paper-like object stored in the above-mentioned 1st standard) The purpose is to provide a paper-like object discrimination method that accurately determines the type and authenticity of paper-like objects.

Hereinafter, nine embodiments of the present invention will be explained with reference to FIGS. 2 to 6. The device of the present invention includes a detection section and a signal processing section. In the figure % (21m), (21b) and (21'a
), (2x&) are conveyor belts (22a), (22b) and (22'a) arranged to face each other, respectively.

(224b) is a rotating roller for driving each belt, and a paper-like object, for example, a bank
It is held between i')s) and transported in the direction of the arrow.

Original #1° condensing lens for illumination 1241. The illumination unit constituted by the transparent guide (c) which acts as a slit uniformly illuminates a predetermined area in the width direction of the banknote (a) to be fed. For the above-mentioned illumination unit (to), the light receiving unit @ includes a diffusion plate and guide plate (to), and a plurality of light receivers (2), (to)/, d, which adjust the amount of light received electrically.
. . . , and the light transmitted through the biasing (a) passes through the multi-ridged light receiver −21′, (to) “, . . .
Each receiver 7f receives light uniformly by...
The lacrimal volume sensitivity of each instrument is different, and the transmitted light is
FIG. 3 shows an example of the wavelength sensitivity of each photodetector when the number of photodetectors receiving light in the band is, for example, three. In fig.

Curve AFi indicates the spectral sensitivity of the first receiver, - line B,
C indicates the spectral sensitivity of the second and third photoreceivers (to)' and d, respectively. A photoreceiver having these spectral sensitivities can be realized by combining a silicon photodiode with a suitable colored glass filter, for example.

4 to 6 are diagrams showing the relationship between the illumination, the light receiving area, and the walking position of the banknote. In this figure, (a) is the banknote, (to) is the illumination and light receiving area, that is, Fig. 2 (
The regions of the transparent guide (to) and the diffuser plate (to) in a) are shown. In this figure, the banknote (a) is conveyed in the direction of the arrow across the illumination and light-receiving area, but the banknote (1) is transported in the direction of the arrow (
The width (e) of the area (to) must be set as wide as 41-minutes so that the area (to) does not protrude from the area (to) and become attached. By doing this, the transfer position of the bank note (Jl) is shifted. The influence of skew can be removed0. Also, by making the length of the region 6) sufficiently yellow as shown in Figure 5, the integration time described in * can be made a temporal value close to zero. You can also do that.

In this way, - ticket (1) passes through area (to) 1-
When transmitted light is received by the plurality of light receivers, it is sent to the light receiver output Fi signal processing section. Therefore, the signal processing section will be explained with reference to FIG. 2(b).

The good electrical signals obtained from the reception ft, the equipment a: Gl request, etc. are respectively preamplified by C11), c+a: amN
...The voltage signal is then amplified to an appropriate level, and becomes a signal. These signals are then seen in the integrals a @, @', @“....In addition, the company uses a photo switch to detect the tip of the bank* (a) being conveyed and generates the tip signal ( This signal (to) is sent to the timing circuit (to), which receives this signal (to) and generates a timing signal that controls the integration timing of the 8 integrators. The time is the time from the point in time when the banknote (a) reaches the illumination and light receiving area (to) until it passes completely through.

In this way, each integrator integrates for a predetermined period of time, and the good signals are Vl, Vx, V''...signal V+.

Vl, Vl Hara i' to 7)0)l! G(?)K71
111 Era tL,〃n Jll d mHashin%Vl,V
z, VstlMti Lte t1 Yt - 1tl output 0 Then, the divider (to) obtains the m @vtt - divided signal vt with the signal Y, and the divider (to)' obtains the signal v2 with the signal Y
, and the signal V! When the signals yt, vg... are obtained in this way, these signals vl, vt..., Y are then stored as electrical quantities and compared with the reference signal. A discrimination circuit for discriminating type 1, that is, a comparator (39-A), (39
'-A).

(39#-A)...and (39-B), (
39-B), (39''-■......, this comparator (39-A), (39'-A).

(39-A) ......, a storage device for storing the reference electricity quantity set in advance for each type of normal bank note, for example, the reference voltage setting time W & (4
G-A), (40'-A), (4d'-A)...l
! (40-H).

<<o'-H>, (40'-B) . Mu people).

(40-A) -------$P Yobi (40-13)
, (40i-8), (4d'-kl)... Each reference voltage set to normal one line + 1 - is passed through the system of the present invention in advance and divided by *@, m and adder (b). Each of the output signals is stored in an erasable manner.

Therefore, the comparator (39-A)... and the reference voltage setting circuit (40-A)... are used, for example, in the case of A banknotes, and the comparator (39-A)... -8)...
...and reference voltage setting circuit (40-B)... is B
As in the case of Dan's banknotes, the type of banknote can be determined by installing the II number thread system. (Figure 2(b)
) As mentioned above, the reason for using multi-band * and taking the ratio of each band's output is to account for the effects of local soiling on banknotes and changes in the overall soiling % conveyance layer. This is to remove it. In other words, during the distribution process of securities, etc., partial damage, stains, etc., may occur, which can be quite serious.
Considering unused banknotes as a standard, those that have been used for a long period of time will have a light transmittance of 70-6511s degrees throughout the banknotes. However, this problem can be solved by making a determination using the relative value of the multiband output (1) as described above.

Furthermore, since the signals Vl and Va are completely unrelated to the input speed, the comparator (39A) and (
39-13) It is possible to minimize the number of devices with specific softness limits.

Each aS compares the input signal and the reference signal and outputs a signal "1" if the difference in reflection is within a predetermined range, and outputs a signal "10" if it is outside the range. Then, each of these outputs is then judged by the Hgl path, for example, if the AND condition is satisfied, the output Vo is determined to be ``V'', and the 9 Australian inspection fIA bamboo ticket is determined to be normal; The test ticket is determined to be abnormal.

In addition, one embodiment of the invention is to set and store an integral value as a reference voltage as a standard electricity quantity in a banknote of 6 yen. The waveform may be set as a pattern waveform and compared. Let the volatility of each band of banknotes be kt, respectively.2.
Y = Ks Vt +Na Vz +Na Vays
Even if the transmittance changes due to overall contamination, spectral deviation is hardly noticeable except in the case of zero, where xK+'Sh/YVaWK2Vz/Y. That is, in the case of cousins, the division K I + is 1-01. Therefore, the above container becomes as follows.

Ys K (Vt + Vz + Vi) = KY.

vs “q KVt /KY@xvotv2 = K
V2/KY@awv02 Yu, val, and VO2 are values related to the standard bank note. Therefore, Ma1. Since v2 is a summary that removes the fluctuation factors that occur in distribution and 4 oaks, the variation in detected values is small, and a narrow allowable mwA can be set. The output Vl, Va was obtained by dividing the output of Itsuna by the three outputs Vl, Va, and Va, so we removed J! Overflow of the container (when the denominator becomes larger than the denominator) is completely prevented. S remover) Overflow and other hard problems 1] If there is no contract, v't=V
A similar effect can be obtained by determining the output ratio using 1/Va, v;2=Vz/Vs, etc., and performing the discrimination using v'l, v'z, and Va as well.

As explained above, the present invention prepares a normal paper-like object in advance, detects the W embedding of the normal paper-like object using the ninth detector that detects the paper-like hard object to be discriminated, and The detection signal is stored in the reference quantity record 1 [IK notation; when a paper-like object to be discriminated is to be discriminated, the temporary discrimination paper-like object is detected by the above-mentioned detector, and this detection signal and the above-mentioned reference quantity memory #, The type and authenticity of a paper-like object can be determined by comparing the detection signal of a normal paper-like object.

Therefore, if dust or dirt adheres to the detector, or if the luminous intensity of the light emitting part decreases [7], when the detection output drops, the output 1 is again stored in the reference 1i storage device using a paper-like object as a stop layer. All you have to do is memorize the standard amount of time, and cleaning is 11M! This is a method that eliminates the need for a pot. Even if the detection 116b'JTt is changed or the pattern of the paper-like object changes, the reference jt can be obtained simply by passing a normal paper-like object through the thread. It simulates the special effect that gl[ is anxious because it makes you feel anxious.

In the following embodiment, a case will be described in which the d4-wavelength light of a bank note is used as light. However, the present invention is not limited to this, and the reflected light may be photoelectrically converted. Furthermore, in the example shown in Stripe 2, the ratio between the signal Y and the signal v1 is taken to obtain the signal Vl, and the ratio between the signal Y and the signal v2 is taken to obtain the signal v2.
T-Samurai, these signals vs, vz, and Y were each led to a comparator, and the output signals from each comparator were ANDed, and it was used as a fence-wise result, but as a result of the trial, the signal Y was ,
It became clear that the difference between the reference value for the banknote pattern and the standard value for the banknote pattern was not that large compared to Va, so I decided to use the output signals of the comparators (3(J”-A) and (39#-8)). It is possible to perform a high level of discrimination of tree deformation without adding it to the AND circuit I, and furthermore, the signal vlO for the signal Y)
The ratio, that is, the result obtained only from the signal VT, can be used to produce a pseudo-transition of 11 identical haters/with V-C and no Kang-Ao.

[Brief explanation of drawings]

#I1 is a vertical cross-sectional view of an automatic singing instrument according to an embodiment of the present invention, and FIGS. Perspective view of part, (b
) is a block diagram of the signal processing unit, Figure 3 is a diagram showing the distance of multiple light receivers used in the discrimination device, and Figures 4 to 6 are diagrams showing the identification of paper-like objects in the same device. It is a rounded diagram illustrating the poor condition and the irradiated area. a-・1 paper-like body (- nature), 21m, 21b, 21
'a. 21t...Transport belt, ■...Lighting unit, η・
...Light receiving unit, 29.29? 29"...Receiver. Proxy Bentoshi Nori Kinjutsu Yu (Haka 1) No. 3
Figure ↑ Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] In the method of detecting the amount of cutting from a paper-like object and identifying the paper-like object, the physical quantity of the paper-like object prepared in advance is detected (aK) and the detection signal is stored in the reference quantity storage device. At the time of discrimination, the quantity from the paper-like typeface to be discriminated is detected by the above-mentioned detector, and the detection signal and the normal quantity successively output from the above-mentioned reference quantity storage device are used. A paper-like tatami body discrimination method characterized by comparing the detection signal of a paper-like object and thereby distinguishing between 4I & f1j paper-like objects.