KR20110020100A - Calibration method of portable detector which is used to detect near-infrared phosphor and portable detector which is used to detect near-infrared phosphor for forgery discrimination - Google Patents

Abstract

PURPOSE: A near-infrared light emitting body recognizing device for distinguishing whether paper money is faked and a measuring method thereof are provided to increase result reproducibility and increase measurement sensitivity of a probe unit. CONSTITUTION: A probe controller(11) compares information of a sample inputted from the outside with existing information and transmits the comparison result to an external device. A light source(12) is connected to a probe controller. The light source emits light of a specific wavelength and irradiates the light on a sample on a printed material(30). A light source stabilizer(14) is connected to the light source and the probe controller to regularly control output of the light source. A filter unit(40) passes only light of a fixed range of wavelength emitted from the sample.

Description

Near-infrared phosphor recognition device for counterfeit discrimination and measuring method using same {{Calibration method of portable detector which is used to detect near-infrared phosphor and portable detector which is used to detect near-infrared phosphor for forgery discrimination}

The present invention relates to a near-infrared light emitting body recognition device for discrimination and a measuring method using the same. Specifically, the light source unit, the light source stabilizer, the filter unit, the detection unit, the amplifier, the A / D converter, the operation button unit, the sensor unit, the first connection unit, A main unit comprising a probe unit comprising a probe control unit, and a main unit unit including a second connection unit, a main control unit, an information display unit, a power supply unit, and a communication unit to detect a special spectrum emitted from a sample on a printed matter measured by the probe unit. And comparing and displaying the measured value and the reference value through the unit, and measuring the special wavelength spectrum emitted from the sample on the printed matter by using the configuration of the probe unit and the main unit unit. It is about the measuring method using this.

The excitation and luminescence properties of these special materials can be classified by wavelength according to the characteristics of the light emitters, and then ultraviolet excitation-ultraviolet light emission, ultraviolet excitation-visible light emission, ultraviolet excitation-near infrared light emission, visible light excitation-visible light emission, visible light excitation-near infrared light emission. And anti-stokes series of near-infrared excitation-visible luminescence causing upward transition, and the characteristic spectrum showing excitation and luminescence properties of these special luminaries can be accurately measured through an analytical device called a fluorophotometer.

More specifically, the fluorescence photometer is a device for measuring the spectral characteristics by using a xenon lamp as a light source, a photomultiplier tube in the visible region and an indium / gallium / arsenic photodiode in the near infrared region. It is necessary to control the probe control unit.

Various special light emitters mentioned above are widely used in the fields of display, lighting, anti-counterfeiting, etc. Among them, ultraviolet excitation-visible light emission, visible light excitation-near infrared light emission, near infrared excitation-visible light emitting material are used to check authenticity in the field of anti-counterfeiting. It is widely used. Of the light emitters to be produced and confirmed in the present invention is a light emitter exhibiting visible light excitation-near infrared light emission characteristics.

The range of near-infrared rays in general optics ranges from 750 nm to 1400 nm, but the range may vary among disciplines. On the other hand, the exact luminous characteristics of the near-infrared is measured by a fluorescence photometer as mentioned above, and the problem is that it is not easy to measure the characteristics at the production stage and consumption stage of a product to which a special luminescent body is applied due to its large scale. Therefore, there is a need for a small device capable of easily identifying the invisible special light emitting body.

Conventionally, the exact luminous characteristics of the near infrared are measured by a fluorescence photometer as mentioned above, and the problem is that the measurement of the characteristics is not easy at the production stage and the consumption stage of a product to which a special luminous body is applied due to its large scale.

In general, the material that emits visible light can be visually judged if only an excitation light source of ultraviolet light or near infrared light is used, which means that the portable confirmation device is simple. However, the identification of near-infrared light emitters requires a design based on accurate spectral information, that is, an accurate design through light source, sensor and effective infrared noise blocking based on accurate excitation and emission spectra.

In order to solve the above problems, the present invention includes a light source unit, a light source stabilizer, a filter unit, a detection unit, an amplifier, an A / D converter, an operation button unit, a sensor unit, a first connection unit, and a probe unit including a probe control unit, and The main unit consists of a connection part, a main control part, an information display part, a power supply part, and a communication part, and detects a special spectrum emitted from a sample on the printed material measured by the probe part, and compares and displays the measured value and the reference value through the main device part. In order to improve the reproducibility and to improve the measurement sensitivity of the probe part, the near-infrared light emitter recognition for detecting the special wavelength spectrum of the sample with high sensitivity using a plurality of light sources is integrated by integrating the hole where the light source of the light source part is installed to the lower center side. Its purpose is to provide an apparatus and a measuring method using the same.

In order to solve the above problems, the present invention relates to a near-infrared light emitting body recognition device for counterfeit discrimination and a measuring method using the same, and includes a light source unit, a light source stabilizer, a filter unit, a detector, an amplifier, an A / D converter, an operation button unit, a sensor unit, The probe unit includes a first connection unit and a probe control unit, and a main unit unit consisting of a second connection unit, a main control unit, an information display unit, a power supply unit, and a communication unit to display a special spectrum emitted from a sample on a printed matter measured by the probe unit. By detecting and comparing the measured value and the reference value through the main device unit, and using the configuration of the probe unit and the main unit unit to measure a special wavelength spectrum emitted from the sample on the printed matter.

The present invention comprises a probe part and a main device part, and detects the spectrum of the special wavelength emitted from the sample of the printed matter by irradiating light on the surface of the printed material with the probe by the probe part. It is possible to measure the spectrum of the sample with high sensitivity by increasing the sensitivity by intensively irradiating light to the central side of the light source part, and it is possible to detect a small amount of sample because of high sensitivity.

In addition, the filter and the light emitting unit and the detection unit of the probe unit is configured to be easy to replace, if the failure and breakage occurs, there is an effect that is easy to replace.

In addition, the combination of individual light source control and filter replacement may indirectly confirm the characteristics of the emission wavelength, that is, information on the wavelength range.

As shown in FIGS. 1 to 2, the present invention provides a wavelength detection apparatus for detecting a wavelength transmitted by sending a special wavelength to a printed material containing a sample that emits light at a special wavelength. And a probe control unit 11 for transmitting information to an external device by comparing and analyzing the existing information, and a light source unit 12 connected to the probe control unit to emit light of a special wavelength and irradiating light onto a sample on the printed matter 30. ), A light source stabilizer 14 connected to the light source unit 12 and the probe control unit 11 to constantly adjust the output of the light source unit 12, and when the light emitted from the light source unit 12 is irradiated, the printed matter ( Filter unit 40 for filtering the light of the special wavelength emitted from the sample of 30 to pass only a predetermined wavelength range, and receives the light of the wavelength filtered by the filter unit 40 to amplify the signal A detector 13 for transmitting to the amplifier 19, an amplifier 19 for amplifying the signal transmitted from the detector 13 and transmitting the analog signal to an A / D converter 18 for converting an analog signal into a digital signal; An A / D converter 18 for converting an amplified analog signal connected to the amplifier 19 into a digital signal and transmitting the converted analog signal to the probe controller 11, and connected to the probe controller 11 to allow a user to manipulate the environment. An external device connected to the operation button unit 16, the sensor control unit 17 connected to the probe control unit 11 to measure the proximity of the printed matter 30 printed with the sample, and the probe control unit 11 A probe unit 10 including a first connection unit 15 transmitting information of the probe control unit 11 to the probe unit 10; A second connector 23 which is connected to the first connector 15 of the probe unit 10, and a main that is connected to the second connector 23 to process information transmitted from the probe unit 10. A control unit 21, an information display unit 22 connected to the main control unit 21 to display information of the probe unit 10, and a power supply unit 24 connected to the main control unit 21 to supply power. And a communication unit 25 which is connected to the main control unit 21, transmits an information signal of the main control unit 21 to an external computer, and transmits a signal transmitted from an external computer to the main control unit 21. It is configured to include; the main device unit 20 is configured to include.

The light source unit 12 uses any one of a light emitting diode or a laser diode.

The detection unit 13 uses any one of an indium photodiode, a gallium photodiode, or an arsenic photodiode.

As shown in FIG. 3, a transparent viewing plate 50 is installed between the light source unit 12 and the detection unit 13 in the vertical direction from the upper end to the lower end so that the user can check the mounting position of the printed matter 30. Can be.

The filter unit 14 filters using any one of a long pass filter, a low pass filter, a band pass filter, or a preselector.

In addition, the detection unit 13 is provided with a thermoelectric cooler 17 for removing noise due to the heat of the detection sensor.

The light emitted from the light source unit 12 emits either visible light, infrared light, or ultraviolet light.

As shown in FIG. 4, the light source unit 12 is formed in a circular shape in a planar shape, and a plurality of holes a are formed in a diagonal direction toward the center of the lower surface such that the light source b is formed in each hole. It is provided in (a) in the lower side direction, and the light irradiated from the light source b is reflected by the printing unit and measured by the detection unit 13 installed at the center.

The hole a is formed by one of white anodizing or white coating to increase the degree of integration of the light source b.

As shown in FIG. 6, the method using the present invention is a method of measuring a sample using a near infrared illuminant recognition device for counterfeit discrimination. The probe unit 10 is placed close to the surface of the printed matter 30 on which the sample is printed. A sensing step (S10) of measuring the presence or absence of a sample on the printed matter 30 through the sensor unit 17, and operating the light source unit 12 and the detection unit 13 when the sample is detected; An irradiation step (S20) of irradiating light through the light source unit 12 on the sample detected through the detection step (S10); Detection step (S30) of detecting the special wavelength spectrum of the sample that is emitted from the sample due to the light irradiated through the irradiation step (S20) by filtering the signal of the special wavelength in the filter unit 40 (S30) Wow; A comparison analysis step (S40) of analyzing the special wavelength signal of the sample measured in the detection step (S30) with the wavelength of the reference sample stored in the main control unit 21 of the main device unit 20; And an information display step (S50) of displaying the information analyzed through the comparison and analysis step (S40) to the information display unit 22 of the main device unit 20.

(B1= 시료의 발광신호가 없는 기준값, S= 측정되어진 시료의 발광신호)(식 1)을 통해 기준이 되는 NS값을 계산하고, 광원부(12)에서 발광되어지는 빛의 강도가 변화되어지면

(B2'= 시료의 발광신호가 있는 변화값, B2= 시료의 발광신호가 있는 기준값)(식 2)로 보정값(C)을 구하고, 상기 보정값을 이용하여 B1값이 고정되고, B2값이 변동되어질때 NS1값(

(NS1= B1값이 고정되고, B2값이 변동되어질때) (식 3))을 구하고, B1값과 B2값이 변동되어질때에는 NS2값(

(NS2= B1값과 B2값이 변동되어질때)(식 4))을 구하게 된다.As shown in FIG. 7, the sensing step (S10) is stored in the probe control unit 11 of the probe unit 10 to correct the light emitted from the light source unit 12.

If the reference NS value is calculated using (B1 = reference value without the light emission signal of the sample, S = light emission signal of the measured sample) (Equation 1), and the intensity of light emitted from the light source unit 12 is changed,

The correction value C is obtained by (B2 '= change value with the light emission signal of the sample, B2 = reference value with the light emission signal of the sample) (Equation 2), and the B1 value is fixed using the correction value, and the B2 value is obtained. Is changed to NS1 value (

(When NS1 = B1 value is fixed and B2 value is changed) (Equation 3)), and when B1 value and B2 value are changed, NS2 value (

(When NS2 = B1 and B2 fluctuate) (Equation 4).

That is, the present invention will be described in more detail as follows.

As shown in FIG. 1 and FIG. 2, the present invention includes a printed matter 30, a probe part 10, and a main device part 20, and measures a sample in the probe part 10 to measure a main device part ( 20), and the information is displayed on the main device unit 20.

The probe unit 10 includes a light source unit 12, a light source stabilizer 14, a filter unit 40, a detector unit 13, an amplifier 19, an A / D converter 18, and an operation button unit 16. And a sensor unit 17, a first connection unit 15, and a probe control unit 11.

The probe controller 11 compares the information of the sample input from the outside with the existing information and transmits the information to the external device.

As shown in FIG. 4, the light source unit 12 is configured to emit light of a special wavelength to irradiate light onto a sample on the printed matter 30, and is formed in a circular shape on a plane, and has a lower side center. A plurality of holes (a) are formed in a diagonal direction toward the light source (b) is provided in each hole (a) in the downward direction, the light source (b) using any one of a light emitting diode or a laser diode, The surface of the hole (a) is subjected to any one of white anodizing or white coating,

The light source stabilizer 14 is connected to the light source unit 12 and the probe control unit 11 to constantly adjust the output of the light source unit 12.

When the light emitted from the light source unit 12 is irradiated, the filter unit 40 filters the light of the special wavelength emitted from the sample of the printed matter to pass only a certain wavelength range, and a long pass filter or a low pass filter or a band pass. The filtering is done using either a filter or a preselector.

The detection unit receives the light of the wavelength filtered by the filter unit 40 and transmits it to the amplifier 19 to amplify the signal, using any one of indium photodiode, gallium photodiode or arsenic photodiode as a detection sensor, The thermoelectric cooler 17 is installed in the detection unit 13 to remove noise due to the heat of the detection sensor.

The amplifier amplifies the signal transmitted from the detector 13 and transmits the analog signal to the A / D converter 18 which converts the analog signal into a digital signal.

The A / D converter is connected to the amplifier 19 to convert the amplified analog signal into a digital signal and transmit it to the probe controller 11.

The operation button unit 16 is connected to the probe control unit 11 so that the user manipulates the use environment.

The sensor unit 17 is connected to the probe controller 11 to measure the proximity of the printed matter 30 on which the sample is printed.

The first connector 15 is connected to the probe controller 11 to transmit information of the probe controller 11 to an external device.

In addition, the main device unit 20 includes a second connection unit 23, a main control unit 21, an information display unit 22, a power supply unit 24, and a communication unit 25.

The second connector 23 is connected to the first connector 15 of the probe unit 10 to receive information, and the main controller is connected to the second connector to be transmitted from the probe unit 10. Process the information.

The information display unit 22 is connected to the main control unit 21 to display information of the probe unit 10 transmitted from the main control unit 21.

The power supply unit 24 is connected to the main control unit 21 to supply power.

The communication unit 25 is connected to the main control unit 21, and transmits an information signal of the main control unit 21 to an external computer, and transmits a signal transmitted from an external computer to the main control unit 21. .

As shown in FIGS. 6 to 7, a method of measuring a sample by using the above-described present invention for detecting a near-infrared light emitter is a surface of a printed matter 30 on which a sample is printed through a sensing step (S10). Proximity to the probe unit 10 to measure the presence or absence of the sample on the printed matter 30 through the sensor unit 17, and when the sample is detected to operate the light source unit 12 and the detection unit 13, the irradiation step (S20 Irradiate light through the light source unit 12 on the sample detected in the detection step (S10) through), and is emitted from the sample due to the light irradiated through the irradiation step (S20) through the detection step (S30) The special wavelength signal of the losing is filtered by the filter unit 40 to detect the special wavelength signal of the sample through the detector 13, and the special sample of the sample measured in the detection step S30 through the comparative analysis step S40. The wavelength signal of the main unit 20 The information is analyzed by comparing with the wavelength of the reference sample stored in the control unit 21, and the information analyzed in the comparative analysis step (S40) through the information display step (S50). Will be displayed as).

In this case, in the sensing step S10, a correction equation is embedded in the probe controller 11 to compensate for a phenomenon in which the brightness of the light source decreases as the light source b of the light source unit 12 is operated.

(식 1)을 통해 계산하여

이라는 결과식에 의해 190이라는 결과값을 얻게된다.As illustrated in FIG. 7, the correction method is described by way of example. The B1 value (the reference value without the light emission signal of the sample) is 210, the B2 value (the reference value with the light emission signal of the sample) is 500 and measured by the probe unit. If the measured value of the printed sample is 400, if the B2 value is normally 500

Calculation through (Equation 1)

You can get 190 result by the result of.

However, when the light emitted from the light source b of the light source unit 12 attenuates, the B1 value or B2 value detected by the detection unit 13 is changed. In this case, the B1 value and B2 value are higher than the reference value. Will be lowered.

(식 2)를 이용하여 변화되어지는 B2값을 B2'값으로 설정하고, 계산하면,

(식 2)라는 보정 값을 얻게된다.This results in a different result, in which case the correction

If you set B2 value to be changed to B2 'value using (Equation 2) and calculate

The correction value (Equation 2) is obtained.

Through this correction value, the B1 value is fixed and the NS1 value when the B2 value is changed and the NS2 value when the B1 value and the B2 value are changed can be calculated.

(식 3)을 이용하여 계산하게되며, 이 는,

으로 계산결과가 나타나게 된다.These NS1 values are

It is calculated using (Equation 3), which is

The calculation result is displayed.

(식 4)를 이용하여 계산하게 되며, 이는

이라는 결과가 나타나게된다.The NS2 value is

Is calculated using (Equation 4).

Results in

As such, the phenomenon in which the light of the light source b is attenuated is corrected through the correction value C so that the output result is displayed in the same manner as the result before the attenuation.

1 is a configuration diagram of the probe unit of the forgery discrimination near-infrared illuminant recognition apparatus according to the present invention,

2 is a block diagram of the main device of the forgery discrimination near-infrared illuminant recognition apparatus according to the present invention,

3 is a perspective view showing a probe unit of the forgery discrimination near-infrared illuminant recognition device according to the present invention;

Figure 4 is a cutaway perspective view showing the configuration of the light source of the light source unit of the forgery discrimination near infrared light emitting body recognition device according to the present invention,

5 is a perspective view showing the configuration of the main unit of the forgery discrimination near-infrared illuminant recognition apparatus according to the present invention;

6 is a flow chart of a measurement method using the forgery discrimination near infrared light emitter recognition apparatus according to the present invention,

7 is a view showing a method for correcting the tube of the measurement method using the forgery discrimination near-infrared illuminant recognition apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: probe part 20: main device part

30: printed matter 40: filter part

50: observation board

Claims (11)

In the light-emitting body recognition device for detecting the forgery by sending a special wavelength to the printed material containing a sample that is emitted at a special wavelength to recognize the conveyed wavelength, Probe control unit 11 for transmitting information to an external device by analyzing the information of the sample input from the outside and the existing information, A light source unit 12 connected to the probe controller to emit light of a special wavelength to irradiate light onto the sample on the printed matter 30; A light source stabilizer 14 connected to the light source unit 12 and the probe control unit 11 to constantly adjust the output of the light source unit 12; When the light emitted from the light source unit 12 is irradiated, the filter unit 40 for filtering the light of the special wavelength emitted from the sample of the printed matter 30 to pass only a certain wavelength range, and A detector 13 receiving the light of the wavelength filtered by the filter unit 40 and transmitting the received signal to an amplifier 19 for amplifying a signal; An amplifier 19 for amplifying the signal transmitted from the detector 13 and transmitting the analog signal to an A / D converter 18 for converting an analog signal into a digital signal; An A / D converter 18 connected to the amplifier 19 and converting the amplified analog signal into a digital signal and transmitting the digital signal to the probe controller 11; An operation button unit 16 connected to the probe control unit 11 for operating a user environment; A sensor unit 17 connected to the probe controller 11 to measure proximity of the printed matter 30 on which a sample is printed; A probe unit 10 connected to the probe control unit 11 and including a first connection unit 15 transmitting information of the probe control unit 11 to an external device; A second connection part 23 connected to the first connection part 15 of the probe part 10, A main controller 21 connected to the second connection unit 23 and processing information transmitted from the probe unit 10; An information display unit 22 connected to the main control unit 21 to display information of the probe unit 10; A power supply unit 24 connected to the main control unit 21 to supply power; The communication unit 25 is connected to the main control unit 21 and transmits an information signal of the main control unit 21 to an external computer, and transmits a signal transmitted from an external computer to the main control unit 21. Near-infrared light emitting recognition device for discrimination, characterized in that comprises a; main device portion 20 is configured. The method of claim 1, The light source unit 12 is a near-infrared light emitting body recognition device for discrimination, characterized in that using any one of a light emitting diode or a laser diode. The method of claim 1, The detecting unit (13) is a near-infrared light emitting body recognition device for discrimination, characterized in that any one of the indium photodiode, gallium photodiode or arsenic photodiode as a detection sensor. The method of claim 1, Forgery discrimination, characterized in that between the light source 12 and the detection unit 13, the observation plate 50 of the transparent material is installed in the vertical direction from the upper end to the lower end so that the user can check the mounting position of the printed matter (30). Near-infrared illuminant recognition device. The method of claim 1, The filter unit (14) is characterized in that for filtering by using any one of a long pass filter, a low pass filter, a band pass filter or a pre-selector for detecting the infrared IR emitter. The method of claim 1, The detection unit (13) is a near-infrared light emitting body recognition device for discrimination, characterized in that the thermoelectric cooler (17) for removing noise due to the heat of the detection sensor is installed. The method of claim 1, The light emitted from the light source unit 12 is a near-infrared light emitting body recognition device for discrimination, characterized in that any one of visible light, infrared light or ultraviolet light is emitted. The method of claim 1, The light source unit 12 is formed in a circular shape in a plane, a plurality of holes (a) are formed in a diagonal direction toward the center of the lower side, the light source is installed in each hole (a) in the lower side direction, The forgery discrimination near-infrared illuminant recognition device, characterized in that the light emitted from the light source is reflected by the printing unit and measured by the detection unit installed in the center. The method of claim 8, The hole (a) is a near-infrared light emitting recognition device for discrimination, characterized in that formed by any one of white anodizing or white coating to increase the degree of integration of the light source. In the method for measuring a sample using a near-infrared illuminant recognition device for counterfeit discrimination, The probe unit 10 is placed close to the surface of the printed matter 30 on which the sample is printed, and the presence or absence of the sample on the printed matter 30 is measured through the sensor unit 17. When the sample is detected, the light source unit 12 and the detection unit ( A sensing step S10 of operating 13); An irradiation step (S20) of irradiating light through the light source unit 12 on the sample detected through the detection step (S10); Detection step (S30) of detecting the special wavelength spectrum of the sample that is emitted from the sample due to the light irradiated through the irradiation step (S20) by filtering the signal of the special wavelength in the filter unit 40 (S30) Wow; A comparison analysis step (S40) of analyzing the special wavelength signal of the sample measured in the detection step (S30) with the wavelength of the reference sample stored in the main control unit 21 of the main device unit 20; Recognizing near-infrared light emitter for discriminating forgery, characterized in that it comprises a; information display step (S50) for displaying the information analyzed by the comparison analysis step (S40) to the information display unit 22 of the main device unit 20 Measurement method using the device. The method of claim 10, In the sensing step (S10) is stored in the probe control unit 11 of the probe unit 10 to correct the light emitted from the light source unit 12

If the reference NS value is calculated using (B1 = reference value without the light emission signal of the sample, S = light emission signal of the measured sample) (Equation 1), and the intensity of light emitted from the light source unit 12 is changed,

The correction value C is obtained by (B2 '= change value with the light emission signal of the sample, B2 = reference value with the light emission signal of the sample) (Equation 2), and the B1 value is fixed using the correction value, and the B2 value is obtained. Is changed to NS1 value (

(When NS1 = B1 value is fixed and B2 value is changed) (Equation 3)), and when B1 value and B2 value are changed, NS2 value (

(NS2 = when the B1 and B2 values fluctuate) (Equation 4)).

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