JPH1125313A - Device for discriminating sort of paper money - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discriminate the sort of paper money by irradiating paper money with light, receiving its reflected light, detecting a registration number indicating individual number of the paper money from the received data, and comparing the character form of the registration number with the master data of a character form of a previously stored registration number to discriminate the sort of the paper money. SOLUTION: A light source 17 in an upper surface detection mechanism 15 and a light source 21 in a lower surface detection mechanism 16 are arranged so as to irradiate paper money in carrying with light, and when the paper money reaches respective light irradiation positions, its reflected light is respectively detected by CCD cameras 19, 23. When respective reflected light detection data are temporarily stored in a RAM 26, a CPU 25 binarizes detection data in a prescribed time range in the carrying direction of the width direction of paper money out of the detection data detected by the cameras 19, 23 and the graphic data of a registration number indicating the individual number of the paper money by a registration number detection means 28. A money sort discrimination means 29 in the CPU 25 successively compares the detected graphic data of the registration number with master data stored in a ROM 27 to judge the sort of the paper money.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bill denomination discriminating apparatus for discriminating a denomination of a bill, and more particularly to a bill denomination discriminating apparatus for discriminating a denomination by optically detecting a bill.

[0002]

2. Description of the Related Art Conventionally, a banknote denomination discriminating apparatus is disclosed in, for example, Japanese Patent Application Laid-Open No. 1-281591. This bill denomination discriminating device irradiates light from a light source to a carried bill, collects reflected light from the bill with a lens, and receives the reflected light with an image line sensor. Then, the optical information received by the image line sensor is photoelectrically converted into image data, and the image data is binarized to detect a character representing a denomination printed on a banknote. The denomination is determined by comparing with the master data of the character stored in advance.

[0003]

At present, the denomination of banknotes is determined by the transmission or reflection of light and the size of the banknotes in addition to the above. Of course, there is a possibility that a denomination cannot be made with these, and there is a possibility that a device that can discriminate the denomination of a bill from another new viewpoint may be required. Therefore, an object of the present invention is to provide a banknote denomination discriminating apparatus capable of discriminating a banknote denomination from an unconventional viewpoint.

[0004]

In order to achieve the above object, a bill denomination discriminating apparatus according to the present invention comprises: a light irradiating means for irradiating light to a bill; A light receiving means for receiving the reflected light, a serial number detecting means for detecting a serial number indicating an individual number of the bill from the data received by the light receiving means, a font of the serial number detected by the serial number detecting means, And denomination determining means for determining a denomination by comparing the stored master data of the font of the serial number. Thus, when the serial number detecting means detects the serial number indicating the individual number of the bill from the data received by the light receiving means, the denomination determining means determines the font of the detected serial number and the serial number stored in advance. The denomination is determined by comparing it with the master data of the font. Thus, the denomination can be determined from the font of the serial number.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a bill denomination discriminating apparatus according to the present invention will be described below with reference to FIGS. In FIG. 1, reference numerals 11 and 12 denote transport means for horizontally transporting the banknotes 1 arranged in a straight line in a manner substantially perpendicular to the transport direction while sandwiching the bills 1 arranged horizontally by upper and lower transport belts. The banknote denomination discriminating device 13 is arranged so as to be able to discriminate the denomination of the banknote 1 when the banknote 1 is transferred between the transporting means 11 and 12. In FIG. 1, the bills 1 are delivered from the right side to the left side by the transport means 11 and 12.

As shown in FIGS. 1 and 2, the bill denomination discriminating device 13 includes an upper surface detecting mechanism 15 for detecting the upper surface of the bill 1 located between the conveying means 11 and 12 during the conveying.
And a lower surface detecting mechanism 16 for detecting the lower surface side of the banknote 1 located between the transporting units 11 and 12 during transporting.

The upper surface detecting mechanism 15 includes a light source (light irradiating means) 17 for irradiating light from above to the banknote 1 positioned between the transporting means 11 and 12 during transport, and a position between the transporting means 11 and 12 during transporting. (Light irradiating means) 18 which is arranged between the bill 1 to be irradiated and the light source 17 to limit the irradiation range of the light from the light source 17, and which is arranged above the light source 17 through the slit 18 And a CCD camera (light receiving means) 19 capable of detecting the reflected light from the banknote 1 located between the transporting means 11 and 12 during the transporting.

A lower surface detecting mechanism 16 is provided between a light source (light irradiating means) 21 for irradiating light from below to the banknote 1 located between the conveying means 11 and 12 during conveyance, and between the conveying means 11 and 12 during conveyance. A slit (light irradiating means) 22 disposed between the banknote 1 and the light source 21 to limit the irradiation range of the light from the light source 21; And a CCD camera (light receiving means) 23 capable of detecting reflected light from the banknote 1 located between the transporting means 11 and 12 during the transport of the light radiated through the camera.

[0009] Here, in the case of a paper currency circulating in Japan, the area of the bill 1 on the left side from the center in the longitudinal direction and the upper third in the transverse direction (Fig. 3).
The serial numbers are respectively described in two places: a range X indicated by hatching in a horizontal direction and a range of a lower right side of a center in a longitudinal direction and a lower third in a short direction (a range Y indicated by hatching in FIG. 3). I have.

In this embodiment, the upper surface detecting mechanism 15 and the lower surface detecting mechanism 16 are provided on the upper and lower sides as described above so that the denomination can be determined even if the banknote 1 is not conveyed in a state in which the front and back sides are sorted. Is arranged.
Further, the upper surface detection mechanism 15 and the lower surface detection mechanism 16
The slits 18 of the respective light sources 17, 21 so that the influence of the light of each light source 17, 21 does not affect the other.
The light irradiation range on the banknote 1 limited by 22 is shifted left and right with respect to the transport direction of the banknote 1. Specifically, banknote 1
The light irradiation range of the upper surface detection mechanism 15 is on the left side in plan view with the downstream side in the transport direction as the upper side, and the lower surface detection mechanism 16 is on the right side in plan view.
Are arranged such that the light irradiation ranges do not overlap each other. The upper surface detection mechanism 15 and the lower surface detection mechanism 1
No. 6 matches the light irradiation ranges from the light sources 17 and 21 in the bill transport direction.

The CCD camera 19 of the upper surface detecting mechanism 15 and the CCD camera 23 of the lower surface detecting mechanism 16
The CPU 25 has a RAM 26 for storing data detected by the CCD cameras 19 and 23.
And a ROM 27 in which master data for denomination determination by the CPU 25 is stored. Where C
The PU 25 includes a serial number detecting unit 28 that detects only fonts as graphic data of serial numbers indicating individual numbers of the banknote 1 from data detected by the CCD cameras 19 and 23, and a serial number detected by the serial number detecting unit 28. Font and ROM2
And a denomination discriminating means 29 for discriminating the denomination by comparing with the master data of the font of the serial number stored in advance in 7.

The ROM 27 stores numbers and alphabets of 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 used as serial numbers for each banknote 1 of all denominations to be handled. The master data of the font of the character except for I and O is stored. That is, for example, FIG.
For example, if 0, 3, and 6 are illustrated and described, the font of the ten thousand notes shown in the upper part, the font of the five thousand notes shown in the middle part, and the font of the thousand notes shown in the lower part have the same number. The fonts are different for each number, and the master data of the fonts of all the serial numbers different depending on the denomination are binarized and stored. Also, depending on the direction of conveyance of the banknote 1, the characters may face either up or down along the conveyance direction. Therefore, the master data includes both the top and bottom of the font of all the characters used as the serial number. Has data.

Next, the banknote denomination discriminating device 13 having the above-described configuration is described.
The operation of will be described. During the denomination discriminating operation, the light source 17 of the upper surface detecting mechanism 15 and the light source 21 of the lower surface detecting mechanism 16 are always in a light emitting state.
When the banknote 1 being conveyed reaches the light irradiation position by 2, the reflected light is detected by the respective CCD cameras 19 and 23. When the reflected light is detected by the two CCD cameras 19 and 23 and the respective data is temporarily stored in the RAM 26, the CPU 25 executes one of the CCD cameras 19 and 23, for example, the CCD camera of the upper surface detecting mechanism 15. 19, only the detection data in a predetermined range of the detection time t in the transport direction of the banknote 1 in the short direction, specifically, the detection data of the first t / 3 of the detection is used. The data is binarized by cutting the data, for example, at an appropriate threshold value, so that the serial number detecting means 28 detects the graphic data of the serial number indicating the individual number of the bill.

Next, all of the detected serial numbers or a predetermined number of graphic data are stored one by one in the CPU 2.
No. 5 denomination discriminating means 29 sequentially compares the serial numbers with the master data stored in the ROM 27, and all the compared serial numbers (or a predetermined ratio or more) match those of one denomination (that is, the degree of coincidence). Is greater than or equal to a predetermined ratio) and the characters have the same vertical orientation.
It is determined that the bill is the one denomination.

Here, when the serial number of any denomination is not detected in the binarized data of the detection data by the one CCD camera 19, the serial number is not described on the upper surface. In the detection data of the lower surface detection mechanism 16 opposite to the above,
Only the detection data of a predetermined range of the detection time t in the transport direction of the banknote 1 in the lateral direction, specifically, the detection data of the first t / 3 time is used, and this detection data is set to an appropriate threshold , And the digitized figure data is detected by the serial number detecting means 28.

Next, all of the detected serial numbers or a predetermined number of graphic data are stored one by one in the ROM 2.
7 are sequentially compared with the master data stored therein, and all the compared serial numbers (or more than a predetermined ratio) match those of one denomination (that is, the degree of coincidence is a predetermined ratio or more) ), And when the characters have the same vertical direction, it is determined that the banknote is the one denomination.

Here, the detection data at the time of the first T / 3 is used regardless of the up-down direction and the front-back direction of the banknote 1 regardless of the upper-side detection mechanism 15 and the lower-side detection mechanism. This is because the serial number is included in the detection data at the time of the first T / 3 of any one of No. 16.

According to the bill denomination discriminating apparatus described above,
The serial number detecting means 28 of the CPU 25
When the serial numbers indicating the individual numbers of the banknotes are detected from the data received by the modules 9 and 23, the denomination determining means 2 of the CPU 25
9 determines the denomination by comparing the detected serial number font with the master data of the serial number font stored in advance. In this way, the denomination can be determined from the font of the serial number. Therefore, if used in addition to the conventional denomination determination, the accuracy of the denomination determination can be further improved.

In the above, the case where the banknote 1 is conveyed without being sorted is described as an example.
When the bill 1 is conveyed in a state where the front and back are assorted,
It is sufficient to provide the above-described detection mechanism only on the side having the serial number of the bill 1 to be conveyed.

[0020]

As described in detail above, according to the present invention,
When the serial number detecting means detects the serial number indicating the individual number of the bill from the data received by the light receiving means, the denomination discriminating means determines the font of the detected serial number and the font of the serial number stored in advance. The denomination is determined by comparing with the master data. Thus, the denomination can be determined from the font of the serial number.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing one embodiment of a bill denomination discriminating apparatus of the present invention.

FIG. 2 is a block diagram of a control system of one embodiment of a bill denomination discriminating apparatus of the present invention.

FIG. 3 is a plan view showing an existing range of serial numbers of bills detected in one embodiment of the bill denomination discriminating apparatus of the present invention.

FIG. 4 is a chart showing an example of serial numbers detected in an embodiment of the banknote denomination discriminating apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Banknote 13 Sheet discriminating apparatus 17, 21 Light source (light irradiation means) 18, 22 Slit (light irradiation means) 19, 23 CCD camera (light receiving means) 25 CPU 28 Serial number detection means 29 Denomination discrimination means

Claims (1)

[Claims] 1. A light irradiating means for irradiating light to a bill, a light receiving means for receiving reflected light of the light irradiated by the light irradiating means from the bill, and individual data of the bill based on data received by the light receiving means. Serial number detecting means for detecting a serial number indicating a number, and comparing the font of the serial number detected by the serial number detecting means with the master data of the font of the serial number stored in advance to determine the denomination. And a denomination determining means.