JP3263112B2 - Bill discrimination device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bill discriminating apparatus for detecting the degree of dirt on a banknote and classifying the banknote into a genuine banknote and a damaged banknote in a banknote sorter or the like.

[0002]

2. Description of the Related Art For example, in a bill sorting machine used in a financial institution, a bill discriminating apparatus for detecting the degree of dirt on a bill and classifying the bill into a genuine note and an unfit note is disclosed.
By irradiating the surface of the bill to be conveyed with light and converting the reflected light (or transmitted light) from the bill surface into an electric signal with a line sensor or the like, the data corresponding to the degree of dirt on the bill surface is captured, The received data is collated with the damage determination data set in advance to determine whether the bill is valid or not.

Conventionally, the method for setting the damage determination data in such a damage determination apparatus uses a bill (cash) that mixes a clean bill and a dirty bill within a range to be set. The fitness data is set by detecting the corresponding data with a line sensor or the like.

[0004]

However, in the method of setting the damage discrimination data using a bill (cash) in which a clean bill and a dirty bill within a desired range are mixed,
Depending on the degree of soiling of the banknote detected by the line sensor at the time of setting, the set fitness determination data is affected,
There has been a problem that it is not possible to always set stable and accurate fitness determination data.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bill validity discriminating apparatus which can always set the discrimination data at a stable level accurately and easily.

[0006]

According to the present invention, there is provided a bill validity discriminating apparatus for illuminating a bill to be conveyed with light, receiving light from the bill by the light irradiation of the light source, and converting the bill into an electric signal. photoelectric conversion means for converting, when the fitness determination data set, the
Conveyance of the simulated banknote having the first optical characteristic and the simulated banknote having the second optical characteristic to form fitness discrimination data by means of output signals obtained from the photoelectric conversion means; Storage means for storing the fitness determination data created by the determination data creation means, and fitness slice creation means for creating a fitness slice based on the fitness determination data stored in the storage means; By transporting the banknote for determining the damage, comprising a discriminating means for performing a discrimination between the output signal obtained from the photoelectric conversion means and the damage slice created by the damage slice creation means. I have. In addition, the bill of the present invention for damages
Another device is a light source that illuminates the bills being transported with light,
Receives light from the banknote by irradiating light from the light source, and
Photoelectric conversion means to convert the banknotes into multiple numbers
A fitness level setting means that can be set in stages and a fitness determination data
At the time of data setting, the simulated banknote of the first optical characteristic and the second optical
By transporting a simulated banknote with characteristics, the photoelectric conversion
Creates fitness judgment data based on output signals obtained from the stages.
Means for creating damage discrimination data, and
Storage means for storing the fitness judgment data created by the means
The fitness determination data stored in the storage means and the fitness
The damage slice is determined based on the settings of the loss level setting means.
Damage slice creation means to be created and damage judgment
By transporting bills for separation, the photoelectric conversion
Output signal obtained from the means and the damaged slice creating means
To judge the damage by the damage slice created by
And another means.

[0007]

[Function] By creating and setting fitness discrimination data by using a plurality of types of simulated bills having different optical characteristics (light reflectance or light transmittance), left and right are determined by the degree of contamination of the bill (cash) as in the conventional case. Since it is not performed, it is possible to always set the fitness determination data accurately and easily at a stable level.

[0008]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows a bill validity determining apparatus according to this embodiment. In the figure, the banknote P1 to be judged for damage or the simulated banknote P for setting the damage judgment data is shown.
2 is conveyed in a direction indicated by an arrow in the figure by a conveying belt (not shown). A rod-shaped light source 1 for irradiating light to the surface of the transported bill P1 or P2 is provided, and photoelectric conversion means for receiving reflected light from the surface of the bill P1 or P2 and converting the reflected light into an electric signal. A line sensor 2 is provided. Here, the light source 1 and the line sensor 2 are disposed in a direction orthogonal to the bill conveying direction.

The output signal of the line sensor 2 is supplied to a processing circuit 3
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 performs a masking process for extracting only necessary portions. The output signal of the processing circuit 3 is supplied to a fitness determination data creation unit 4. The fitness determination data creation unit 4 creates fitness determination data based on the output signal of the processing circuit 3 and stores it in the storage unit 5. Here, a non-volatile memory such as an electrically erasable / rewritable read-only memory (EEPROM) is used as the storage unit 5, for example.

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

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

The output signal of the line sensor 2 is supplied to a processing circuit 3
After performing various processes such as correction and masking, the data is sent to the fitness determining data creating unit 4. In this case, the simulated banknotes P2 having different light reflectivities may have the light reflectivity specified before being conveyed, or if the difference in the light reflectivity is large, convey the mixed banknotes and create the damage discrimination data. The simulated banknotes P2 conveyed in the unit 4 based on the light reflectance may be automatically classified.

The fitness discriminating data creating section 4 creates the fitness discriminating data using the data on the surface reflected light of the simulated banknote P2 collected as described above. here,
As an example, a case where two types of simulated banknotes P2 with light reflectance are used will be described. Assuming that the collected data of the simulated banknote P2 is, for example, as shown in FIG. 2, the data of the simulated banknote P2 having a large light reflectance (bright) is 8a, and the data of the small (dark) light reflectance is 8b. Based on the two data 8a and 8b and the difference A between the two data 8a and 8b, the slice 9a of the banknote in the brightest case is
To create the darkest slice 9b of the bill.

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

Next, normal damage determination will be described.
The banknote P1 to be judged to be defective is transported by a transport belt (not shown), and the reflected light from the banknote 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 contamination of the banknote P1) is
After performing various processes such as correction and masking, it is sent to the determination unit 8.

On the other hand, the damage slice creation unit 6 stores the damage level set by the damage level setting switch 7 and the storage unit 5.
Then, a fitness slice corresponding to the fitness level set by the fitness level setting switch 7 is created from the fitness determination data stored in the storage unit 7 and sent to the determination unit 8. That is, for example, assuming that the storage unit 5 stores damage determination data obtained by dividing the slices 9a and 9b at equal intervals as shown in FIG. The 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. The discriminator 8 compares the output signal of the processing circuit 3 (the data on the surface of the bill P1) with the damaged slice from the damaged slice creator 6 to determine whether the bill P1 is damaged.
The result of the determination is output.

As described above, by using a plurality of types of simulated banknotes having different light reflectivities, the reflected light is converted into an electric signal by a line sensor, so that data corresponding to the light reflectance of the simulated banknotes is obtained. In the loss determination data creation unit 4,
Create fitness judgment data based on the output of the line sensor,
By storing it in the storage unit, it is not affected by the degree of dirt of the banknote as compared with the conventional one using the banknote (cash) itself, so that it is always at a stable level, accurately and easily. It is possible to set the fitness determination 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 can be similarly applied to the case where the transmitted light of a banknote is used.

In the above-described embodiment, a case where a plurality of types of simulated banknotes having different light reflectivities are used is described. However, the present invention is not limited to this, and a plurality of types of simulated banknotes having different light transmittances are similarly used. Applicable.

[0020]

As described above in detail, according to the present invention, it is possible to provide a bill validity discriminating apparatus capable of setting the validity discrimination data accurately and easily at a stable level at all times.

[Brief description of the drawings]

FIG. 1 is a block diagram schematically showing a configuration of a bill validity determining apparatus according to one embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between data of a simulated banknote and data of discriminating damage;

[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 Part, 7 ...
Positive / loss level setting switch, 8,...

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G07D 7/00 G07D 7/12

Claims (2)

(57) [Claims] And 1. A light source for irradiating light to the bill to be conveyed, receives light from the bill by light irradiation of the light source, a photoelectric conversion means for converting into an electric signal, when the fitness determination data set, the Simulated banknotes with optical characteristics of No. 1 and
And a simulated banknote having the second optical property , by which the discrimination data is prepared by the output signal obtained from the photoelectric conversion means, Storage means for storing the damage discrimination data, and a damage slice creation means for forming a damage slice based on the damage determination data stored in the storage means; By conveying the output signal obtained from the photoelectric conversion means and the damaged slice created by the damaged slice creating means, and a discriminating means for performing discrimination of the bill, characterized by comprising: Damage determination device. 2. A light source for irradiating light to a conveyed bill, photoelectric conversion means for receiving light from the bill by irradiating light from the light source and converting the light into an electric signal; A fitness level setting means that can be set for the first time;
And a simulated banknote having the second optical property , by which the discrimination data is prepared by the output signal obtained from the photoelectric conversion means, Storage means for storing the fitness determination data, and a fitness slice creation means for creating a fitness slice based on the fitness determination data stored in the storage means and the settings of the fitness level setting means. At the time of loss determination, by transporting a bill for damage determination, determination means for performing damage determination by the output signal obtained from the photoelectric conversion means and the damage slice created by the damage slice creation means, , fitness determination device of the banknote, characterized by comprising a.