RU158936U1 - DEVICE FOR AUTOMATIC CHECK OF AVAILABILITY ON BANKNOTES OF PROTECTIVE ANTI-STOX TAGS (SPECIAL ELEMENT AND) - Google Patents

Abstract

An automatic banknote authentication device comprising a banknote supply slot, a banknote dispensing slot, a central processor main board and a banknote conveyance path, characterized in that it further comprises infrared anti-stoke security detection sensors located on the lower panel of the banknote conveyance path and on the upper panels of the banknote transportation path; moreover, the infrared detection sensors include emitting infrared sensors and receiving infrared sensors; wherein the radiation wavelength of the emitting infrared sensors is 940 nm; moreover, the signals characterizing the measurement information of the receiving IR sensors are transmitted to the main board of the central processor for processing, which registers the presence or absence of protective anti-Stokes marks on the banknote.

Description

Technical field

The invention relates to devices for automatically checking the authenticity of banknotes, in particular, to devices for automatically checking the authenticity of banknotes by the presence of a protective anti-Stokes label by registering invisible infrared (IR) anti-Stokes radiation under the influence of exciting IR radiation, and can be used in automatic authenticity detectors banknotes of any class and complexity.

State of the art

Labels with anti-Stokes luminescence are based on the use of special paints containing anti-Stokes phosphors. Anti-Stokes phosphors are powder materials activated by compounds based on oxides, fluorides, oxysulfides and oxychlorides of yttrium and some other elements and are designed to convert long-wave infrared radiation (1.5-1.6 μm) into short-wave (0.8-1, 02 μm) and an IR range of 0.9-1.07 μm into visible light of various colors. These phosphors can be effectively used for marking microobjects.

Typically, IR cameras or IR visualizers and an appropriate illuminator are used to detect IR anti-Stokes luminescence. In this case, the detection is made by visual observation of luminescence radiation on the screen (RU 2379194 C1, RU 2010142292 A, RU 21453 U1, RU 55140 U1). These anti-Stokes radiation detection solutions require operator involvement, which does not allow the use of these solutions in automatic banknote verification devices.

The principle of operation of automatic currency detectors is as follows: the bill is placed in the receiving device, then it moves into the path of the automatic detector, where it passes through a series of special sensors that analyze its response to a specific physical effect. The response is generated by specific security elements of the banknote - embedded structures (threads, fibers, strips), drawings and inscriptions, applied with paints that are sensitive to a certain type of radiation (ultraviolet and infrared) and magnetic effects. In addition, automatic detectors use sensors that determine the quality of paper, as well as spectral analyzers that allow you to determine the composition of the ink. The main sensors that are equipped with automatic detectors are infrared sensors; ultraviolet sensors; magnetic sensors; spectrum analyzers; anti-stokes luminescence sensors.

There are solutions designed to detect anti-Stokes radiation. In such solutions, a laser is used to irradiate the protective marks, and an additional focusing lens is used to amplify and focus the reflected radiation on IR sensors. The use of a focusing lens in such devices results in a low degree of authenticity of banknote authentication in the case of using such solutions in automatic banknote authentication devices (or banknote counters) in which the banknote transport speed is approximately 1000 banknotes / min. In addition, such solutions are very expensive to manufacture, and also have a low service life.

The prior art device for sorting documents disclosed in patent RU 2344063 C2, selected as a prototype. This device is intended for sorting, counting and checking banknotes. The known device comprises a housing, a control panel with a display, a slot for dispensing banknotes, a slot for dispensing banknotes, counting emitting and receiving infrared sensors, a main board of the central processor and a banknote conveyance path including a start sensor, lower and upper panels of the banknote conveyance path, a flicker mechanism with the possibility of separating banknotes, accelerator shaft rollers. The known device also includes a banknote authentication module. However, this device does not allow checking banknotes for the presence of a protective anti-Stokes tag, and therefore has a low level of reliability of checking the authenticity of banknotes.

The utility model is intended to address these shortcomings. This problem is solved through the use of IR sensors for detecting anti-Stokes security tags in a banknote counter using the laserless method of exciting anti-Stokes security tags.

Utility Model Essence

To solve this problem, an automatic banknote authentication device comprising a banknote supply slot, a banknote dispensing slot, a central processor main board, a banknote conveying path, according to a utility model, further comprises IR sensors for detecting anti-stokes security labels located on the bottom panel of the banknote conveying path and on the top panel of the banknote conveyance path. Moreover, the IR detection sensors include emitting IR sensors and receiving IR sensors. The radiation wavelength of the emitting infrared sensors is 940 Nm.

When the banknote passes through the transportation path, the glow of the anti-Stokes protective label, which occurs due to the irradiation of the anti-Stokes security label with an IR sensor, is detected by the receiving IR sensor. The receiving IR sensor transmits a signal to the main board of the central processor, which registers the presence or absence of protective anti-Stokes marks on the banknote.

The technical result is to increase the reliability level of banknote authentication in automatic banknote counting devices.

Brief Description of the Drawings

In FIG. 1 is a front view of an automatic banknote authentication device.

In FIG. 2 is a rear view of an automatic banknote authentication device.

In FIG. 3 shows an exemplary embodiment of a banknote transportation path according to a utility model.

In FIG. 4 shows a connection diagram of anti-Stokes security tags detection sensors.

In FIG. 5 illustrates a graph of the glow of anti-Stokes security labels during operation of the detection sensors.

In FIG. 6 shows a schematic arrangement of anti-Stokes security tags detection sensors on a banknote transport path according to a utility model.

Utility Model Implementation

Next, a utility model will be described in detail with reference to the accompanying drawings.

After feeding the banknote (6) into the banknote feed slot (1), the banknote enters the control zone of the start sensor (9), which detects the banknote (6) and sends a signal to the main board of the central processor (15). The main board of the central processor (15) includes an engine (7), which drives the first (10) and second (16) axes of the lower panel of the transport path (3) by kinematic communication using a drive belt (8). The rotation of the first (10) and second (16) axes of the lower panel of the transport path (3) sets in motion flat belts (11) for drawing banknotes. The banknote (6) begins to enter the path between the upper panel of the banknote conveying path (13) and the lower panel of the banknote conveying path (3) through flat belts (11) for drawing banknotes.

The device may further comprise a folding mechanism (not shown in the figures) for separating banknotes, including rollers of the folding mechanism and rollers of the accelerating shaft. The folding mechanism separates the banknotes from the bundle and delivers them individually to the transport path for transporting banknotes from the banknote feed slot to the banknote delivery slot.

In the transport path between the feed slot and the slot for dispensing banknotes, there are sensors for detecting protective anti-Stokes labels (12, 14).

In the lower panel of the banknote conveying path (3) there are IR sensors for detecting the protective anti-Stokes label of the lower panel (14). IR sensors for detecting the protective anti-Stokes label of the upper panel (12) are located on the upper panel of the banknote transportation path (13). Depending on the degree of complexity and the need to feed banknotes in any of 4 orientations, a utility model can have from one to four IR sensors for detecting a protective anti-Stokes label (12, 14).

If protective anti-Stokes marks are detected on the banknote (6), the central processor issues a YES command, and the banknote passes further into the banknote issuing slot (5). At the same time, a message is displayed on the control panel display (4) that the banknote has been accepted. Depending on the complexity of the utility model, information on the face value, amount and number of banknotes checked may also be displayed. To do this, infrared sensors can be located in the transport path between the feed slot and the banknote delivery slot, which count the banknotes, as well as check for authenticity by infrared security features (not shown in the figures).

If protective anti-Stokes marks are not detected on the banknote (6), the central processor issues a NO command, the engine reverse (7) is automatically turned on, an audible signal sounds and the banknote returns through the banknote feed slot (2). At the same time, an indicator lights up on the control panel, which signals that the banknote has not been accepted. In another implementation, the control panel displays information in the form of an error code signaling that the banknote has not been accepted for a specific symptom.

All modules that implement the detection of anti-Stokes security tags can be either integrated on the main board of the central processor or separately located depending on the design of the utility model.

Due to the fact that the protective anti-Stokes tag is located at the bottom of the banknote and on only one side (front), to check banknotes in all four orientations, it is necessary to install four pairs of IR sensors (303) in the path of the automatic banknote authentication device (one pair an emitting IR sensor (102) and one receiving IR sensor (101)) with the possibility of irradiating a protective anti-Stokes mark (element I) in any of the four possible orientations of the banknote supplied.

When a banknote (6) passes, when a protective anti-Stokes tag enters the irradiation zone with an IR-emitting sensor (102), phosphors of a protective anti-Stokes tag (103) are excited, which is accompanied by a glow with a wavelength of 940 Nm in the range +/- 50 Nm. The induced glow is detected by the receiving IR sensor (101). This is shown in the graph from point 201 to point 202. When the excitation (glow) of the anti-Stokes tag (103) reaches its maximum (point 202), the infrared emitting sensor (102) is turned off. After turning off the emitting IR sensor (102), the process of damping the glow (points 202-203) begins, which is detected by the receiving IR sensor (101) immediately after turning off the emitting IR sensor (102). During the damping of the glow (points 202-203), measurements are made with a receiving IR sensor (101). The received information (signal) is fed to the sensor board (105), which amplifies the signal to the desired amplitude and feeds it further to the main board of the central processor (15) for processing. The central processor processes the received signal and gives a final result on the presence or absence of a protective anti-Stokes tag (103). The central processor processes the received data according to a specific algorithm. The central processor operation algorithm is based on the principle of comparing the received signal delta (a parameter obtained from measurements taking into account the amplitude and attenuation time at each measurement point) with the reference signal value, which is stored in the non-volatile memory of the central processor.

All checked banknotes enter the slot for issuing banknotes (5) and, using the transport mechanism, are stacked on the user's desktop or in a separate tray (not shown in the figures).

The utility model is based on the laserless method of exciting protective anti-Stokes tags, which uses standard laserless infrared sensors with a wavelength of 940 Nm +/- 50 Nm. For the excitation of anti-Stokes labels, the wavelength is a critical factor. In this case, the radiation of IR sensors with a wavelength of 940 Nm +/- 50 Nm activates the glow of the anti-Stokes label.

The utility model uses pairs of detection sensors.

- Radiant IR sensor. The radiation wavelength in the range of 940 Nm +/- 50 Nm.

- Receiving IR sensor. The reception wavelength in the range of 870-950 Nm.

The use of such IR sensors eliminates the use of expensive and unreliable laser methods for exciting protective anti-Stokes tags.

This solution improves the reliability of banknote authentication, extends the life of an automatic banknote authentication device, and reduces the cost of the device, in contrast to the use of laser-emitting IR sensors.

The utility model does not have additional optics (lenses) on IR sensors to amplify and focus the reflected radiation.

List of reference numerals of the attached drawings

1. Auto Detector Housing

2. Banknote slot

3. The bottom panel of the banknote transport path

4. Control panel with display

5. Slot for issuing banknotes.

6. Banknote

7. Engine

8. Drive belt

9. Start sensor

10. The first axis of the path

11. Flat belts for broaching a banknote

12. IR sensors for detecting anti-stokes protective labels of the upper panel

13. The top panel of the banknote transport path

14. IR sensors for detecting anti-stokes protective labels of the bottom panel

15. The main board of the central processor

16. The second axis of the path

101. Receiving IR sensor 940 Nm

102. Radiant IR sensor 940 Nm

103. Element And

105. Sensor Board

201. The start point of the excitation (glow) of the protective element

202. The peak point of the excitation (glow) of the protective element

203. Point of total attenuation of the glow of the protective element

303. Pairs of IR sensors.

Claims (1)

An automatic banknote authentication device comprising a banknote supply slot, a banknote dispensing slot, a central processor main board and a banknote conveyance path, characterized in that it further comprises infrared anti-stoke security detection sensors located on the lower panel of the banknote conveyance path and on the upper panels of the banknote transportation path; moreover, the infrared detection sensors include emitting infrared sensors and receiving infrared sensors; wherein the radiation wavelength of the emitting infrared sensors is 940 nm; moreover, the signals characterizing the measurement information of the receiving IR sensors are transmitted to the main board of the central processor for processing, which registers the presence or absence of protective anti-Stokes marks on the banknote.

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