JPH05217053A - Device for discriminating full/loss of paper money - Google Patents

Abstract

PURPOSE:To provide a paper money full/loss discriminating device capable of accurately and simply setting up full/loss discriminating data always at a stable level. CONSTITUTION:A light source 1 irradiates carried paper money with light and a line sensor 2 converts reflected light from the paper money into an electric signal. A full/loss discriminating data forming part 4 forms full/loss discriminating data based upon an output signal obtained from the sensor 2 by carrying plural kinds of artificial paper money P2 having respectively different light reflection factors at the time of setting up the full/loss discriminating data and stores the formed data in a storage part 5. A full/loss slice forming part 6 forms a full/loss slice based upon the full/loss discriminating data stored in the storage part 5 and the set contents of a full/loss level setting switch 7 capable of setting up the full/loss level of paper money to plural stages. A discriminating part 8 discriminates the full/loss of the paper money based upon an output signal obtained from the sensor 2 and the full/loss slice formed by the forming part 6 by carrying paper money Pi whose full/loss is to be discriminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a banknote integrity determination device for detecting the degree of soiling of banknotes and classifying the banknotes into genuine and unfit bills, for example, in a bill sorter.

[0002]

2. Description of the Related Art For example, in a banknote sorting machine used in a financial institution, there is a banknote fitness judgment device for detecting the degree of dirt of a banknote and classifying it into a genuine note and an unfit note.
By irradiating the surface of the banknote being conveyed with light and converting the reflected light (or transmitted light) from the surface of the banknote into an electric signal with a line sensor or the like, data corresponding to the degree of dirt on the surface of the banknote is taken in, By comparing the captured data with preset damage judgment data, it is possible to judge whether the bill is normal or not.

Conventionally, the method for setting the damage determination data in such a damage determination device uses a banknote (cash) in which clean banknotes and dirty banknotes within a range to be set are mixed, and the degree of contamination on the surface thereof. The damage determination data is set by detecting the corresponding data with a line sensor or the like.

[0004]

However, in the method of setting the fitness judgment data by using a bill (cash) in which a clean bill and a dirty bill within a range to be set are mixed,
Depending on how dirty the bill is detected by the line sensor at the time of setting, the accuracy judgment data to be set is influenced,
There was a problem that it was not always possible to set stable and accurate data on correctness judgment.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a banknote fitness determination device capable of accurately and easily setting the fitness determination data at a stable level.

[0006]

SUMMARY OF THE INVENTION A bill correctness determination device of the present invention receives a light source for irradiating a conveyed bill with light, and light from the bill due to the light irradiation of the source to generate an electrical signal. With photoelectric conversion means for converting and setting the damage determination data, by conveying a plurality of types of simulated banknotes having different optical characteristics,
A fitness discrimination data creating means for producing fitness discrimination data by an output signal obtained from the photoelectric conversion means, a storage means for storing the fitness discrimination data created by the fitness discrimination data creating means, and this storage means. An output signal obtained from the photoelectric conversion means by a fitness slice creating means for creating a fitness slice based on the fitness determination data stored in And a discriminating means for discriminating a fitness based on the fitness slice created by the fitness slice creating means.

[0007]

[Function] By creating and setting the damage judgment data using a plurality of types of simulated banknotes having different optical characteristics (light reflectance or light transmittance), left and right can be changed depending on how dirty the banknote (cash) is as in the conventional case. Since it is not performed, it is possible to always set the fitness judgment data accurately and easily at a stable level.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows a bill bankability determination device according to this embodiment. In the figure, a bill P1 to be judged whether it is right or wrong, or a simulated bill P for setting right or wrong discrimination data
2 is nipped and conveyed by a conveyor belt (not shown) in a direction indicated by an arrow. A rod-shaped light source 1 for irradiating the surface of the conveyed bill P1 or P2 with light is provided, and photoelectric conversion means for receiving the reflected light from the surface of the bill P1 or P2 and converting it into an electric signal. Line sensor 2 is provided. Here, the light source 1 and the line sensor 2 are arranged in a direction orthogonal to the banknote transport direction.

The output signal of the line sensor 2 is processed by the processing circuit 3
Is supplied to. The processing circuit 3 performs various correction processes such as AGC (automatic gain control) and shading correction on the output signal of the line sensor 2, and also performs masking process for extracting only a necessary portion. The output signal of the processing circuit 3 is supplied to the fitness determination data creation unit 4. The fitness determination data creation unit 4 creates the fitness determination data from the output signal of the processing circuit 3 and stores it in the storage unit 5. Here, as the storage unit 5, for example, a non-volatile memory such as an electrically erasable / rewritable read only memory (EEPROM) is used.

The storage unit 5 is connected to a fitness slice creation unit 6 and a fitness level setting switch 7 is connected to the fitness slice creation unit 6. The fitness level setting switch 7 is operated by an operator, and the fitness level can be set in a plurality of stages. The fitness slice creation unit 6 creates a fitness slice based on the fitness determination data stored in the storage unit 5 and the setting content of the fitness level setting switch 7, and sends it to the determination unit 8. The output signal of the processing circuit 3 is also supplied to the determination unit 8. The determination unit 8 is
The output signal of the processing circuit 3 and the fitness slice created by the fitness slice creation unit 6 determine whether the bill P1 is valid or not. Next, the operation in such a configuration will be described.

First, a method of setting the fitness judgment data will be described. In this case, the fitness judgment data is set using a plurality of types of simulated banknotes P2 having different light reflectances. That is, the simulated banknote P2 is, as in the case of the normal damage judgment,
It is conveyed by a conveyor belt (not shown). Light is emitted from the light source 1 to the surface of the conveyed simulated bill P2, and the reflected light is incident on the line sensor 2 and converted into an electric signal corresponding to the light reflectance of the simulated bill P2.

The output signal of the line sensor 2 is processed by the processing circuit 3
After being subjected to various corrections, masking, and other processes, the data is sent to the fitness determination data creation unit 4. In this case, the simulated bills P2 having different light reflectances may be designated for light reflectance before being conveyed. If the difference in light reflectance is large, the bills may be mixed and conveyed to create the damage determination data. The simulated bills P2 conveyed by the light reflectance in the section 4 may be automatically classified.

The fitness judgment data creation unit 4 creates the fitness judgment data by using the data by the surface reflected light of the simulated bill P2 collected as described above. here,
As an example, a case of using two types of simulated bills P2 having light reflectance will be described. Assuming that the collected data of the simulated bill P2 is, for example, as shown in FIG. 2, the data of the simulated bill P2 having a large light reflectance (bright) is 8a and the data having a small light reflectance (dark) is 8b. , The two data 8a, 8b and the difference A between the two data 8a, 8b, the slice 9a in the case of the brightest bill in the present fitness determination device.
And the slice 9b for the darkest bill is created.

As for the intermediate level slices, the slices 9a and 9b may be divided at equal intervals as shown in FIG. 2, or may be divided according to a certain function. Further, the intermediate level may be created by the data of the simulated bill having the intermediate light reflectance. The fitness determination data thus created is stored in the storage unit 5.

Next, a normal fitness judgment will be described.
The bill P1 that is judged to be right or wrong is conveyed by a conveyor belt (not shown), and the reflected light from the bill P1 is converted into an electric signal by the line sensor 2. The output signal of the line sensor 2 (a signal corresponding to the degree of dirt of the bill P1) is used as the processing circuit 3
After being subjected to various kinds of correction and masking processing, the data is sent to the discrimination unit 8.

On the other hand, in the fitness slice creation unit 6, the fitness level set by the fitness level setting switch 7 and the storage unit 5 are set.
A fitness slice corresponding to the fitness level set by the fitness level setting switch 7 is created based on the fitness determination data stored in (4) and is sent to the determination unit 8. That is, for example, assuming that the storage unit 5 stores the damage determination data in which the slices 9a and 9b are divided at equal intervals as shown in FIG. A slice corresponding to the fitness level set by the setting switch 7 is selected, and the slice is output to the determination unit 8 as a fitness slice. In the discrimination unit 8, the output signal of the processing circuit 3 (data on the surface of the banknote P1) is compared with the fitness slice from the fitness slice creation unit 6 to perform the fitness determination of the banknote P1,
The determination result is output.

As described above, a plurality of types of simulated banknotes having different light reflectances are used, and the reflected light is converted into an electric signal by the line sensor to obtain data corresponding to the light reflectance of the simulated banknotes. In the loss determination data creation unit 4,
Create the damage judgment data from the output of the line sensor,
By storing it in the storage unit, it does not depend on how dirty the bills are, as compared to the conventional one that uses bills (cash) itself, so it is always a stable level, accurate, and easy. It is possible to set the fitness judgment data. In addition, in the said Example, although the case where the reflected light of a banknote was used was demonstrated, it is not limited to this and is similarly applicable also when using the transmitted light of a banknote.

In the above embodiment, the case where a plurality of types of simulated bills having different light reflectances are used has been described. However, the present invention is not limited to this, and the same applies to the case where a plurality of types of simulated bills having different light transmittances are used. Applicable.

[0020]

As described in detail above, according to the present invention, it is possible to provide a bill damage determination device capable of always setting the damage determination data accurately and easily at a stable level.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing the configuration of a bill damage determination device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between data of a simulated bill and damage determination data.

[Explanation of symbols]

P ... Banknote, 1 ... Light source, 2 ... Line sensor (photoelectric conversion means), 3 ... Processing circuit, 4 ... Damage determination data creation unit, 5 ... Storage unit, 6 ... Damage slice creation Department, 7 ...
Damage level setting switch, 8 ... Judgment section.

Claims (2)

[Claims] 1. A light source for irradiating a banknote to be conveyed with light, a photoelectric conversion means for receiving light from the banknote by the light irradiation of the light source, and converting the light into an electric signal; By conveying a plurality of types of simulated banknotes having different characteristics, a damage determination data creating means for creating damage determination data by an output signal obtained from the photoelectric conversion means, and a damage determination data creating means A storage unit for storing the fitness judgment data, a fitness slice creation unit for creating a fitness slice based on the fitness determination data stored in the storage unit, and a bill for determining the fitness when the fitness determination is made. It is characterized in that it is provided with a discriminating means for discriminating a fitness by an output signal obtained from the photoelectric conversion means and a fitness slice created by the fitness slice creating means by carrying. That bill fitness discriminating apparatus. 2. A light source for irradiating a conveyed banknote with light, a photoelectric conversion means for receiving light from the banknote by the light irradiation of the light source, and converting the light into an electric signal, and a plurality of levels of damage level of the banknote. And the damage determination level setting means, and when the damage determination data is set, by conveying a plurality of types of simulated banknotes having different optical characteristics, the damage determination data is created by the output signal obtained from the photoelectric conversion means. Normality discrimination data creating means, storage means for storing the normality discrimination data created by the regularity discrimination data creating means, normality discrimination data stored in the storage means, and setting of the regularity level setting means A fitness slice creating means for creating a fitness slice based on the content, and a bill for determining the fitness during the fitness determination, by conveying the output signal obtained from the photoelectric conversion means and the fitness An apparatus for determining whether a banknote is normal or bad, comprising: a determining unit that determines whether the banknote is a loss or a loss, which is created by the slice creating unit.