KR102025912B1 - Code and detector to recognize code and detecting method using the same - Google Patents

Abstract

The present invention relates to a code, a detector for recognizing the same and a recognition method thereof and, more specifically, to a code, a detector for recognizing the same and a recognition method thereof which use a code made of two or more special materials to be regularly arranged and a plurality of light sources for emitting lights of different wavelength ranges to determine whether a target with a special material is genuine by afterglow showing a special material causing a Raman shift. The present invention alternately turns on two or more types of light sources to emit the light sources to a code, analyzes afterglow excited and released from the code to identify the type to determine genuineness, and recognizes a code on which multiple special materials are sequentially arranged in a prescribed rule to simultaneously recognize two types of information. The present invention uses a plurality of light emitting modules, detects numerous codes different from each other after applying the codes, and thus provides strong counterfeit suppression capability. The present invention can deliver a sufficient amount of information without an inconvenient process of scanning a QR code by a dedicated terminal with a camera embedded therein or a camera of a smartphone. Since a dedicated terminal is inexpensive, a manufacturer, a distribution network staff, and a consumer can purchase the dedicated terminal to acknowledge the genuineness of a product.

Description

Code and detector that recognizes it and how to recognize it {CODE AND DETECTOR TO RECOGNIZE CODE AND DETECTING METHOD USING THE SAME}

The present invention relates to a code, a detector for recognizing the same, and a method for recognizing the same, and particularly, a Raman variation using a code formed of two or more special materials and regularly arranged, and a plurality of light sources emitting light of different wavelength bands. The present invention relates to a code for determining the authenticity of an object on which a special material is formed as an afterglow of a special material causing Raman Shift, a detector for recognizing the same, and a recognition method thereof.

Generally, objects that contain securities are subject to forgery by applying special techniques. However, with the development of counterfeit technology, it is difficult to accurately determine the authenticity of the object. Therefore, in order to solve this problem, a technique of applying a special material causing Raman mutation to an object and recognizing it through a light source has been applied. However, at present, since such a technology uses only one light source, it is possible to recognize only a special substance causing Raman mutation, and thus a technology for more accurately determining the authenticity of an object is required.

Republic of Korea Patent Publication No. 10-2016-0119672 (Published October 14, 2016)

It is an object of the present invention to provide a code that can more reliably determine the authenticity of an object, a detector for recognizing the same, and a recognition method thereof.

In order to achieve the above object, the present invention includes a plurality of special material lines formed of a special material causing afterglow of the Raman mutation and regularly arranged, and a space formed between the plurality of special material lines, Special material lines provide codes formed of two or more different special materials.

The apparatus may further include a visible scan direction leader formed on the plurality of special material lines and spaces. In this case, the scan direction leader may be formed of an ink that emits light of a specific wavelength by the irradiated light, and the ink may include an ultraviolet ink or the like.

The plurality of special material lines may be arranged a plurality of bar-shaped special material lines, or a plurality of special material lines having a ring shape different in diameter from each other may be arranged in a concentric circle shape.

In addition, the present invention is a detector for recognizing codes according to claims 1 to 4, the light emitting unit including a plurality of light source modules for emitting light of different wavelength bands, and the light emitted from the light emitting unit is a special material A light receiving unit including at least one light receiving module that receives light emitted by being excited from a code formed by the code, and the authenticity of the object on which the code is formed based on a signal received by the light receiving unit including the at least one light receiving module It provides a detector comprising a control unit.

The control unit includes a light emitting unit control module which sequentially turns on the plurality of light source modules, and applies pulse power to blink when each of the plurality of light source modules is turned on.

A plurality of light source modules and the light receiving module are paired, and the control unit simultaneously lights up the plurality of light source modules, and interference of light emitted from another light source module in proximity between the plurality of pairs including the light source module and the light receiving module. Interference prevention structure to prevent the may be provided.

The control unit normalizes the afterglow included in the light received by the light-receiving unit, and then calculates the afterglow pattern different for each prestored special material and the dispersion of the normalized afterglow. And a sensing module that determines that the material is a special material that emits afterglow included in the light received by the light receiving unit, and the afterglow is emitted from the special material even after the light is turned off after any one of the plurality of light source modules is turned on. It is light.

The light receiving unit may further include an optical filter for blocking light other than the light of the wavelength band to be received.

The apparatus may further include a scan direction determining module configured to detect light emitted from the scan direction leader to determine whether the detector is out of the code during the scan, and may further include a gyro sensor that detects the scan direction of the detector.

In addition, the present invention provides a code detection method using the above-described detector, the light emitting unit emits light of different wavelength bands, and the light emitted by the light emitted from the light emitting unit is excited from a code formed of a special material And a control unit determining whether or not the authenticity of the object having the code is formed based on the light receiving step and the signal received by the light receiving unit.

When the number of light source modules included in the light emitting unit and the number of light receiving modules included in the light receiving unit are different from each other, the step of emitting the light of different wavelength bands from the light emitting unit may sequentially light the plurality of light source modules, And applying, by the controller, pulse power so that each of the plurality of light source modules is turned on to blink.

When the number of light source modules included in the light emitting unit and the number of light receiving modules included in the light receiving unit are the same, the step of emitting light of different wavelength bands from the light emitting unit may include simultaneously lighting the plurality of light source modules. Include.

The determining of the authenticity of the object on which the special material is formed based on the signal received by the light receiving unit may include: after normalizing afterglow included in the light received by the light receiving unit, after Calculating a dispersion of the normalized afterglow to determine, by the sensing module, that the prestored special material corresponding to the afterglow pattern having a minimum dispersion value is a special material that emits the afterglow included in the light received by the light receiving unit; The afterglow is light emitted from the special material even after one of the plurality of light source modules is turned off and then turned off.

The present invention lights two or more light sources at the intersection and irradiates the code, and analyzes the afterglow emitted by the code to determine the authenticity of the code to determine the authenticity of the code. By recognizing, two pieces of information can be recognized simultaneously.

Since the present invention uses a plurality of light emitting modules, it can detect the same after applying many different codes (O), thereby exhibiting a strong anti-counterfeiting force.

The present invention can deliver a sufficient amount of information without the cumbersome process of scanning a QR code with a camera or a dedicated terminal of the camera built-in camera, the dedicated terminal is cheap, so not only the product manufacturer and the person in charge of the distribution network but also the consumer directly The authenticity of the product can be acknowledged by purchasing.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic plan view of a code using Raman variable afterglow according to a first embodiment of the present invention.
2 is a schematic plan view of a code using Raman-transformed afterglow in accordance with a second embodiment of the present invention.
3 is a conceptual diagram of a detector according to the present invention;
4 is a code emission spectrum and an optical filter transmission spectrum according to whether the detector according to the first embodiment of the present invention is applied.
5 is a spectrum for explaining afterglow in a detector according to a first embodiment of the present invention;
6 to 8 are graphs for explaining a method of determining the authenticity of a code in a detector according to a first embodiment of the present invention.
9 is a flowchart of a detection method using a detector according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention, and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you. Like reference numerals in the drawings refer to like elements.

1 is a schematic plan view of a code using a Raman mutant afterglow according to a first embodiment of the present invention.

As shown in FIG. 1, the code using the Raman-varied afterglow according to the first embodiment of the present invention includes a bar-shaped special material line and a space formed between the special material lines.

The special material line is a line formed of a material that emits afterglow by Raman variation. In this embodiment, the first special material line (M # 1), the second special material line (M # 2), and the third is a special material line. Special material line M # 3, fourth special material line M # 4, and fifth special material line M # 5 are illustrated. Of course, this embodiment exemplified five special material lines, but the present invention is not limited thereto, and the special material line according to the present invention may be less than five or more than five. In addition, the special material line is defined by the special material length and the special material width, the special material length is not limited. However, the width of special material should be more than a certain size because the user needs to scan by moving the detector directly. This embodiment calculates the case where a person scans at the maximum speed and illustrates that the width of the special material is 10 mm or more. The first to fifth special material lines M # 1 to M # 5 may be special materials different from each other. That is, all of the first to fifth special material lines M # 1 to M # 5 may be different special materials, or at least one or more may be different. Of course, they may all be the same special material. Since the present invention determines the type of special material applied to the special material line by using afterglow emitted from a plurality of special material lines, the code that can be expressed increases exponentially as the number of special material lines increases.

The space is an area in which no special material is formed between the special material lines, and is formed between each of the first to fifth special material lines. Of course, even if there are less than five or more than five special material lines, a space is formed between each special material line. This space can also be defined as the space length and space width D, the space length being the same as the special material line length described above. However, the space width D, which is the distance between the special materials, may be the same as or different from the special material line width W. In this embodiment, the detector may operate stably without malfunction even in a section where the special material lines are overlapped. It illustrates that the space width (D) is 7mm or more so that.

On the other hand, the code using the Raman shift afterglow according to the present embodiment may further include a scan direction indicator line.

When applying the code according to this embodiment, the user needs to scan the code directly with the detector in hand. Here, the present embodiment illustrates that the special materials of the special material lines are different from each other, and thus, the scan from the first special material line M # 1 to the fifth special material line M # 5 and the fifth special material Scanning from the line M # 5 to the first special material line M # 1 is represented by different codes. In addition, because the special material is an invisible material, it is difficult for a user to manually scan it. Therefore, in this case, it is necessary to inform the user of the scan direction, which can be performed by the scan direction leader line indicated by the arrow. In addition, the scan direction leader is not limited to visually recognizing the scan direction to the user due to the arrow, and the scan direction leader is formed by ultraviolet rays (UV) ink or the like to detect the scan direction by the user. You can also be notified when you leave the leader line. Of course, for this purpose, the detector to be described later should also be able to detect ultraviolet ink. In addition, the present embodiment may implement the scan direction indicator in the form of a code to check whether the scan direction is correct and notify it. For example, the scan direction leader may be formed in the shape of an arrow, and the gap (corresponding to the space between the special material lines) may be formed between the ultraviolet ink lines, as described above. Here, the intervals applied to the scan direction indicator lines are different from each other, so that the scan direction can be recognized by the term in which the ultraviolet ink line is recognized. Of course, the scanning direction can be recognized by making the intervals the same and making the widths of the ultraviolet ink lines different from each other. Moreover, the scanning direction may be recognized by the lines of the different inks using not only the ultraviolet ink line but also other different ink lines. Of course, the scan direction leader may recognize the scan direction to the user and only perform a function of notifying the detector when the detector deviates from the scan direction leader, and the scan direction may be recognized by a gyro sensor which will be described later.

Meanwhile, if the front and rear ends of the special material type of the special material line are symmetrical, the scan direction leader may be omitted. That is, for example, the special materials of the first special material line M # 1 and the fifth special material line M # 5 are the same, and the second special material line M # 2 and the fourth special material are the same. When the special materials of the line M # 4 are the same, a scan is performed from the first special material line M # 1 to the fifth special material line M # 5 or the fifth special material line M # 5. Even if the scan in the direction of the first special material line (M # 1) is the same code is recognized because the scan direction is meaningless. Therefore, in this case, the scan direction leader may be omitted.

Next, a code using Raman-transformed afterglow according to the second embodiment of the present invention that can be scanned in all directions will be described with reference to the accompanying drawings. In the description of the code using the Raman variable afterglow according to the second embodiment of the present invention to be described below, the overlapping description of the code using the Raman variable afterglow according to the first embodiment of the present invention described above will be omitted or briefly described.

2 is a schematic plan view of a code using a Raman mutant afterglow according to a second exemplary embodiment of the present invention.

As shown in FIG. 2, the code using the Raman-varied afterglow according to the second exemplary embodiment of the present invention includes a concentric circular line of special material and a space formed between the line of the special material.

The special material line includes a first special material line, a second special material line, and a third special material line in concentric circles. Here, the second special material line is formed concentrically in the circular first special material line, and the third special material line is formed concentrically in the second special material. Accordingly, the diameter of the first special material line is larger than the second special material line, and the diameter of the second special material line is larger than the third special material line. Of course, this embodiment also, the number of special material lines may be less than three or more than three. In addition, the special materials of each special material line may be different from each other or at least one or more, and may be the same in special cases. Here, it is preferable that the special material line width W is 10 mm or more.

The space is a gap formed between the special material lines so that the special material lines formed of different special materials can be recognized, and the space of this embodiment takes the form of concentric circles according to the shape of the special material lines. In addition, unlike other spaces, a circular space is formed inside the cord, and each space including the inner circle preferably has a space width D of 7 mm or more. Here, each space is preferably the same, but the inner circular space may be more than the width and the other space. By the above-described structure, the code according to the present embodiment can be scanned in all directions up, down, left, and right.

Meanwhile, the present invention can use the code according to the first embodiment and the code according to the present embodiment together.

Next, a detector according to the present invention will be described with reference to the drawings. Descriptions overlapping descriptions of the above-described code will be omitted or briefly described.

3 is a conceptual diagram of a detector according to the present invention.

As shown in FIG. 3, the detector according to the first embodiment of the present invention includes a light emitting part 100 emitting light of different wavelength bands and a code O emitted from the light emitting part 100 and made of a special material. The light receiving unit 200 for receiving a signal emitted from the light, the light receiving unit 200 includes a control unit 300 for determining the authenticity of the detection object based on the signal received.

The light emitting unit 100 is to emit light of different wavelength bands to an object for determining authenticity, and the present invention may include a plurality of light emitting modules, for example, two or more light emitting modules. This embodiment illustrates that the light emitting unit 100 includes three light emitting modules, that is, the first light emitting module 110, the second light emitting module 120, and the third light emitting module 130.

The first light emitting module 110 generates light of the first wavelength band and outputs the light to the code O. FIG. Here, the present exemplary embodiment exemplifies light of the first wavelength band generated by the first light emitting module 110 as ultraviolet rays. In addition, accordingly, the first light emitting module 110 includes an ultraviolet ray light emitting diode (UV LED). However, the present invention is not limited thereto, and a light source other than the LED may be used as the first light emitting module 110 if it can generate and emit light in the ultraviolet wavelength band.

The second light emitting module 120 generates light of the second wavelength band and outputs the light to the code O. According to the present exemplary embodiment, the visible light wavelength band is generated according to the second wavelength generated by the second light emitting module 120. Accordingly, the second light emitting module 120 generates visible light LEDs that generate light and emit light in the visible light wavelength band. It may include. Here, the second light emitting module 120 may also use another light source for generating light in the visible wavelength band instead of the visible LED.

The third light emitting module 130 generates light of the third wavelength band and outputs the light to the code O. FIG. The embodiment exemplifies that the third light emitting module 130 emits infrared rays, and accordingly, the third light emitting module 130 emits light by generating light in the infrared wavelength range. It includes an example). Of course, the third light emitting module 130 may also use any light source as long as it can generate light in the infrared wavelength band.

Meanwhile, in the above-described embodiment, the light emitting unit 100 includes the first light emitting module 110, the second light emitting module 120, and the third light emitting module 130, but the present invention is not limited thereto. no. That is, in the present invention, the light emitting unit 100 may include two light source modules emitting light of different wavelength bands, or may include four or more light source modules emitting light of different wavelength bands.

The light receiving unit 200 receives the light emitted by the code O from the light emitting unit 100. To this end, the light receiving unit 200 is emitted from the first light emitting module 110, the second light emitting module 120, and the third light emitting module 130 to the light receiving unit 200. And a first light receiving module 210 for receiving the emitted light, and a photodiode is illustrated as the first light receiving module 210. In addition, the light receiver 200 generates an electrical signal corresponding to the received light and transmits the electrical signal to the controller 300. Here, the embodiment illustrated the light receiving unit 200 including one first light receiving module 210, but the present invention is not limited thereto. That is, the light receiving unit 200 may include a first light receiving module 210 corresponding to the number of light source modules. In this case, the light source module and the first light receiving module 210 are paired. In addition, the light emitted from the light source module included in each pair is received by the first light receiving module 210 included in the pair. In this case, an interference prevention structure such as a shielding film is provided between the pairs so that optical interference, that is, light emitted from the light source module does not cause interference to the first light receiving module 210 included in the other pair. desirable.

Meanwhile, the present embodiment may include a second light receiving module 220 that recognizes a scan direction indicator line when the code is formed.

The second light receiving module 220 is for recognizing a scan direction leader line formed of ultraviolet ink, and receives the ultraviolet light emitted from the scan direction leader line by the light source. In addition, the ultraviolet light receiving signal generated by the second light receiving module 220 by the ultraviolet light receiving is transmitted to the controller 300 to be described later, the control unit 300 is the ultraviolet light receiving signal from the second light receiving module 220 during the code scan If it is not received, it is determined that the scan direction leader has deviated and the user is notified by sound or vibration.

4 is a code emission spectrum and an optical filter transmission spectrum according to whether the detector according to the first embodiment of the present invention is applied.

On the other hand, the present invention may further include an optical filter (F) for filtering unnecessary light from the light received by the light receiving unit 200. The optical filter F is provided at the front end of the light receiving unit 200, that is, at the position where the light is introduced to filter unnecessary light from the light flowing into the light receiving unit 200. Referring to FIG. 4, when light is emitted from the light emitter 100 and emitted from the code O, the spectrum as shown in FIG. 4A is shown through the light receiver 200, but the optical filter F is provided. 4, the spectrum as shown in FIG. 4A is changed as shown in FIG. 4B. The optical filter 210 passes only light in a specific wavelength range, and in this embodiment, it is effective for the optical filter 210 to pass only light in a wavelength band required by the light receiving unit 200.

The controller 300 controls the light emission of the light emitter 100 and determines and displays the authenticity of the special material based on the light received from the light receiver 200. To this end, the control unit 300 includes a control module 310 for controlling the light emitting unit 100, and a sensing module 320 for determining the authenticity of the special material by determining the light emitted from the code (O). .

The control module 310 includes a light emission control module 311 that controls the light emitting unit 100, and a detection result display module 312 that controls to display the detection result of the detection module 320.

The light emission control module 311 sequentially emits a plurality of light emitting modules included in the light emitting unit 100 when receiving an operation input from a user to determine the authenticity of the object. Here, in the present exemplary embodiment, three light emitting modules, that is, the first light emitting module 110, the second light emitting module 120, and the third light emitting module 130 are illustrated as the light emitting unit 100. 311 sequentially emits the first light emitting module 110, the second light emitting module 120, and the third light emitting module 130. Accordingly, when the first light emitting module 110 is turned on, the second light emitting module 120 and the third light emitting module 130 are turned off. When the second light emitting module 120 is turned on, the first light emitting module 110 and the first light emitting module 110 are turned off. The third light emitting module 130 is turned off. In addition, when the third light emitting module 130 is turned on, the first light emitting module 110 and the second light emitting module 120 are turned off. As described above, the first to third light emitting modules 110, 120, and 130 are sequentially turned on to emit light of different wavelength bands, and the emitted light is emitted from the cord O and received by the light receiving unit 200. do. Meanwhile, the present invention allows the first to third light emitting modules 110, 120, and 130 to be sequentially turned on a predetermined number of times, for example, about five times, and determines whether the first to third light emitting modules 110 are turned on sequentially.

5 is a spectrum for explaining afterglow in a detector according to a first exemplary embodiment of the present invention.

The light emission control module 311 may include the first to third light emitting modules 110 and 120 in a pulse width modulation (PWM) manner such that the first to third light emitting modules 110, 120, and 130 flash and emit light. 130, it is preferable to supply power. Accordingly, as shown in FIG. 5, the light generated by the first to third light emitting modules 110, 120, and 130 shows the same spectrum as A, B, and C, but the light emitted by the code O is afterglow. As the phenomenon appears, afterglow spectra such as A ', B' and C 'appear. That is, when the light emitting unit 100 is turned on for a time from t1 to t2 and turned off for a time from t2 to t3, the light detected by the light receiving unit 200 is detected from t1 to t2 where the light emitting unit 100 is turned on. It maintains a certain level of light intensity during the time of. In addition, the light emission intensity gradually decreases during the time from t2 to t3 when the light emitting unit 100 is turned off, and then disappears after a predetermined time. As described above, according to the present invention, the light emitting life characteristic inherent to the code O can be confirmed by measuring a signal while continuously turning the light emitting part 100 on / off.

The detection result display module 312 displays the detection result of detecting the code O in the detection module 320 to be described later. To this end, the present invention may further include a vibration module for displaying the detection result by vibration or a light source module for displaying the detection result by the color or blinking state of light. Here, the vibration module may display the detection result by shortly vibrating, for example, about 1 second when the result of the detection is genuine, and by vibrating relatively long when, for example, about 3 seconds. In addition, the light source module can basically display the fake and the genuine by red and green, respectively, in the case of one color, for example, if it is lit for a certain time, for example, 5 seconds, if it is flashing fast for about 0.5 seconds, It may also be indicated. In addition, a speaker may be additionally provided to display genuine and fake products through sound. Of course, the present invention may further include a vibration module, a light source module, and a speaker, and display the detection result using the light emitting unit 100 described above. In this case, the second light emitting module 120 that emits visible light, which is a wavelength band visible to the user, may be used, and when the second light emitting module 120 is lit for about 5 seconds, the light blinks quickly in about 0.5 seconds. If so, it may be marked as false.

The sensing module 320 determines the authenticity of the object provided with the code O by determining the code O based on the light received by the light receiving unit 200. To this end, the sensing module 320 includes an afterglow determination module 321 for determining whether the light received by the first light receiving module 210 is light emitted from the code O, and an afterglow determined by the afterglow determination module 231. A special material determination module 323 for calculating a specific material by calculating a dispersion value of a different afterglow pattern for each of the normalized afterglow and the pre-stored code O through the normalization module 322 for normalizing Include.

6 to 8 are graphs for explaining a method of determining the authenticity of the code in the detector according to the first embodiment of the present invention.

The afterglow determination module 321 determines whether afterglow is included in the light received by the light receiving unit 200, and determines whether the light is excited and emitted from the code O. This may be determined by the afterglow determination module 321 measuring a different afterglow light emission time, that is, light emission life for each code (O). In addition, the afterglow determination module 321 may be used for a predetermined time, for example, while the light emitting unit 100 is blinking, that is, when the light emitting unit 100 is turned on to measure a constant light emission intensity and then turn off. If light whose intensity is reduced from nanoseconds (ns) to hundreds of milliseconds (ms) is measured, the afterglow determination module 321 determines that it is afterglow. In addition, when the afterglow determination module 321 includes afterglow in the light received by the light receiving unit 200, the light is determined to be light emitted by being excited by the code O. The afterglow determination module 321 may determine the afterglow after removing the noise from the light received by the light receiving unit 200.

패턴과

패턴을 매칭시켜

패턴에 가장 근접한

패턴을 판단하고, 해당

패턴을 미리 저장된 데이터베이스와 비교하여

패턴에 해당하는 코드(O)의 종류를 알 수 있다. 즉, 도 7에 도시된 바와 같이,

이 제1 발광 모듈(110),

가 제2 발광 모듈(120),

가 제3 발광 모듈(130)에서 출광되어 코드(O)에서 여기되어 발광된 광 중 잔광이라 할 때, 기존에 미리 저장된

패턴과

,

및

를 비교하여 코드(O)의 진위여부와 종류를 알 수 있다.The normalization module 322 normalizes the afterglow determined by the afterglow determination module 231 in order to compare the pattern of the signal received and generated by the light receiving unit 200 with the pattern of the database different for each pre-stored code O. The comparison of the patterns

Patterns and

By matching the pattern

Closest to the pattern

Judge the pattern,

By comparing the pattern to the pre-stored database

The type of code (O) corresponding to the pattern can be known. That is, as shown in FIG.

The first light emitting module 110,

The second light emitting module 120,

Is afterglow among the light emitted from the third light emitting module 130 and excited by the code O to emit light, the previously stored

Patterns and

,

And

You can see the authenticity and type of the code (O) by comparing with.

패턴(그래프)는 아래의 수학식 1로 표현할 수 있으며,

에 대해서 최소 제곱법을 이용하여 최적의

와

를 연산한다. 이후,

와

에 대해서도 최적의

와

를 연산한다.

와

에 대해서 연산하는 동안,

과

,

와

,

와

에 대해서 분산을 추정한다.here,

The pattern (graph) can be expressed by Equation 1 below.

Using the least square method for

Wow

Calculate after,

Wow

Even for

Wow

Calculate

Wow

While calculating for

and

,

Wow

,

Wow

Estimate the variance for.

는 코드(O)마다 상이한 잔광 패턴,

은 발광부(100)에서 수신하여 생성된 광의 잔광 패턴,

는 인수,

는 오프셋을 의미한다.In Equation 1,

Is the afterglow pattern different for each code (O),

Is an afterglow pattern of light generated by the light emitting unit 100,

Is an argument,

Means offset.

값과

값에서 최소값을 갖는 함수

를 아래의 수학식 2와 같이 표현했을 때, 최소값을 찾기 위해서 미분방정식을 적용한 함수의 유도값 연산은 아래의 수학식 3 내지 수학식 6과 같이 연산할 수 있다.Where specific

Value and

Function with minimum value in value

When expressed as shown in Equation 2 below, the derived value calculation of the function to which the differential equation is applied to find the minimum value can be calculated as shown in Equations 3 to 6 below.

에 대한 연산이며, 해법은 수학식 4와 같다.Where Equation 3 is an argument

Is an operation for, and the solution is as shown in Equation 4.

에 대한 연산이며, 해법은 수학식 6과 같다.Equation 5 is an offset

Is an operation for Equation 6.

)의 총합은

되며, n은 정수 55이다. 이를 표현하면 아래의 수학식 7 및 수학식 8과 같다.Also, the offset (

) Is

N is an integer of 55. This is expressed by Equations 7 and 8 below.

Here, Equation 8 is summarized as Equation 9 below.

와 오프셋

를 아래의 수학식 10 및 수학식 11과 같이 표현할 수 있다.Also acquired using Cramer's rule

And offset

May be expressed as in Equations 10 and 11 below.

The special material determination module 323 calculates a dispersion value of the normalized afterglow and the different afterglow patterns for each prestored code O through the normalization module 322 to determine the pattern having the minimum dispersion value as the special material. Referring to FIG. 8, mathematical variances of X and Y1, X and Y2, and X and Y3 may be calculated for three graphs. In addition, minimum dispersion means the closest signal.

가

패턴과 가장 근접한 것을 알 수 있으며, 이를 인지하는 순간 감지가 완료된다. 이때, 본 발명은 도 8을 참조하면, 잔광 패턴의 최소값과 최대값의 차이(D)가 250이상일 때 정상값으로 판단하며, 그 이하일 경우, 잔광 패턴이 정상적이지 않은 것으로 판단한다.Referring to FIG. 8,

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It can be seen that it is closest to the pattern, and the detection is completed as soon as it is recognized. In this case, referring to FIG. 8, when the difference D between the minimum value and the maximum value of the afterglow pattern is 250 or more, it is determined as a normal value, and when it is less than or equal to, the afterglow pattern is not normal.

On the other hand, the detector according to the present invention may further include a scan direction determination module 324 for confirming whether the user scan direction is correct. Here, the scan direction determination module 324 may include a gyro sensor that detects a moving direction of the detector when scanning.

In addition, the detector according to the present invention may further include a communication module for transmitting the recognition result. In this case, the communication module may connect a detector, such as a personal computer or a smartphone, with a Bluetooth, Wi-Fi, and the like, and display the recognition result. Of course, the detector may also exchange data with a dedicated server through a communication module.

As described above, the present invention lights two or more light sources at the intersection and irradiates the code, analyzes the afterglow that is excited and emitted from the code, determines the authenticity thereof, and determines the authenticity of the various special material lines according to a predetermined rule. By also recognizing codes arranged as, two kinds of information can be recognized at the same time. That is, when the present invention is applied to banknotes, a plurality of light emitting modules can accurately classify the type of the code O causing the Raman mutation including the stoke and the antistoke movement, so that not only the authenticity of the banknote but also the paper type can be distinguished. In addition, since the present invention uses a plurality of light emitting modules, it is possible to detect this after applying many different codes (O), thereby exhibiting a strong anti-counterfeiting force. Furthermore, the present invention can deliver a sufficient amount of information without the cumbersome process of scanning a QR code with a built-in camera or a smartphone camera, the dedicated terminal is inexpensive, so not only the product manufacturer and the person in charge of the distribution network but also the consumer directly By purchasing a terminal, the authenticity of the product can be acknowledged.

Next, a detection method using a detector according to the present invention will be described with reference to the drawings. Descriptions overlapping descriptions of the detector according to the present invention described above will be omitted or briefly described.

9 is a flowchart of a detection method using a detector according to the present invention.

As illustrated in FIG. 9, the detection method using the detector according to the present invention includes a step of emitting light (S1), a step of receiving light (S3), and a step of determining authenticity (S3).

In the step S1 of emitting light, the light emitting modules of different wavelength bands are sequentially turned on to the cord O provided in the object to emit light of different wavelength bands. Here, in the present exemplary embodiment, the first light emitting module 110, the second light emitting module 120, and the third light emitting module 130 are sequentially turned on. Accordingly, the light emitting step is to emit light. The light emitting unit 110 may emit light, the second light emitting module 120 may emit light, and the third light emitting module 130 may emit light. Here, each light emitting module is sequentially turned on one by one.

In the step S2 of receiving light, the light receiving unit 200 receives the light emitted in step S1 of being emitted and excited by the code O. Here, the light receiving step S2 is preferably performed only when the light emitting step S1 is performed, that is, when light is emitted from the light emitting unit 100.

In step S3, the authenticity of the cord O is determined based on the light received through the light receiver 200 in the step S2 of receiving light, thereby determining the authenticity of the object having the code O. do. To this end, the step of determining authenticity (S3) includes the step of determining afterglow (S3-1), normalizing (S3-2), and determining a special substance (S3-3).

In the step S3-1 of determining the afterglow, the afterglow determination module 321 determines whether the afterglow is included in the light received in the step S2 of receiving light. This may be determined by the afterglow determination module 321 measuring a different afterglow light emission time, that is, light emission life for each code (O).

In the normalizing operation S3-2, the afterglow determination module 231 determines that the normalization module compares the pattern of the signal received and generated by the light receiving unit 200 with the pattern of the database that is different for each prestored code O. Normalize the afterglow signal.

In the determining of the special material (S3-3), the special material determination module calculates a dispersion value of different afterglow patterns for each prestored code O by using the normalized afterglow signal in the normalizing step (S3-2). The minimum pattern is determined to be a special substance.

Although described above with reference to the drawings and embodiments, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit of the invention described in the claims below. I can understand.

100: light emitting unit 110: first light emitting module
120: second light emitting module 130: third light emitting module
200: light receiving unit 210: first light receiving module
220: second light receiving module 210: optical filter
300: control unit 310: control module
311: light emission control module 312: detection result display module
313: afterglow intensity control module 320: detection module
321: afterglow determination module 322: normalization module
323: special material identification module 324: scan direction recognition module
O: code

Claims (15)

A plurality of special material lines regularly arranged and formed of special materials causing afterglow of Raman mutation,
A space formed between the plurality of special material lines,
A scan direction leader line formed in the plurality of special material lines and overlapping the plurality of special material lines and the space;
The plurality of special material lines are formed of two or more different special materials,
And the scan direction indicator lines are arranged so as to be spaced apart from each other in the scan direction and formed of ink lines emitting light of a specific wavelength by the irradiated light. delete delete The method of claim 1,
The plurality of special material lines are arranged in a plurality of bar-shaped special material lines, or a plurality of special material lines having a ring shape different in diameter from each other arranged in a concentric circle form. A detector for recognizing a code according to claim 1,
A light emitting unit including a plurality of light source modules emitting light of different wavelength bands;
A light receiving unit including at least one light receiving module that receives the light emitted by the light emitted from the light emitting unit is excited from a cord formed of a special material, and
It includes a control unit for determining the authenticity of the object is formed the code based on the signal received from the light receiving unit including the at least one light receiving module,
A plurality of light source modules and the light receiving module are paired, and the control unit simultaneously lights up the plurality of light source modules, and interference of light emitted from another light source module in proximity between the plurality of pairs including the light source module and the light receiving module. Equipped with an interference prevention structure to prevent,
The control unit normalizes the afterglow included in the light received by the light-receiving unit, and then calculates the afterglow pattern different for each prestored special material and the dispersion of the normalized afterglow. And a sensing module that determines that the material is a special material that emits afterglow included in the light received by the light receiving unit, and the afterglow is emitted from the special material even after the light is turned off after any one of the plurality of light source modules is turned on. Detector being light. The method of claim 5,
The control unit,
And a light emitting unit control module which sequentially turns on the plurality of light source modules, and applies pulse power to blink when each of the plurality of light source modules is turned on. delete delete The method of claim 5,
And an optical filter to block light other than the light in the wavelength band to be received by the light receiving unit. The method of claim 9,
And a scan direction determination module configured to detect light emitted from the scan direction leader and determine whether the detector is out of code during a scan. The method of claim 10,
A detector comprising a gyro sensor for sensing the scan direction of the detector. 12. A code detection method using a detector according to any one of claims 5, 6, and 9-11.
Emitting light from different wavelength bands;
Receiving the light emitted from the light emitting unit by excitation from a cord formed of a special material and receiving light from the light receiving unit, and
And determining, by the controller, the authenticity of the object on which the code is formed based on the signal received by the light receiver,
When the number of light source modules included in the light emitting unit and the number of light receiving modules included in the light receiving unit are different from each other, the step of emitting the light of different wavelength bands from the light emitting unit may sequentially light the plurality of light source modules, And applying, by the controller, pulse power to blink when each of the plurality of light source modules is turned on.
The determining of the authenticity of the object on which the special material is formed based on the signal received by the light receiving unit may include: after normalizing afterglow included in the light received by the light receiving unit, after Calculating a dispersion of the normalized afterglow to determine, by the sensing module, that the prestored special material corresponding to the afterglow pattern having a minimum dispersion value is a special material that emits the afterglow included in the light received by the light receiving unit; ,
And the afterglow is light emitted from the special material even after one of the plurality of light source modules is turned off. 12. A code detection method using a detector according to any one of claims 5, 6, and 9-11.
Emitting light from different wavelength bands;
Receiving the light emitted from the light emitting unit by excitation from a cord formed of a special material and receiving light from the light receiving unit, and
And determining, by the controller, the authenticity of the object on which the code is formed based on the signal received by the light receiver,
When the number of light source modules included in the light emitting unit and the number of light receiving modules included in the light receiving unit are the same, the step of emitting light of different wavelength bands from the light emitting unit may include simultaneously lighting the plurality of light source modules. Including,
The determining of the authenticity of the object on which the special material is formed based on the signal received by the light receiving unit may include: after normalizing afterglow included in the light received by the light receiving unit, after Calculating a dispersion of the normalized afterglow to determine, by the sensing module, that the prestored special material corresponding to the afterglow pattern having a minimum dispersion value is a special material that emits the afterglow included in the light received by the light receiving unit; ,
And the afterglow is light emitted from the special material even after one of the plurality of light source modules is turned off. delete delete

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