KR20140044240A - Method and apparatus for detecting counterfeit money using terahertz electromagnetic wave - Google Patents

Abstract

The present invention relates to an apparatus for detecting counterfeit money using a terahertz electromagnetic wave which comprises: a terahertz irradiating unit which irradiates money with a terahertz wave; a reflective wave detecting unit which detects a reflective wave which is reflected from the money; a reflective wave energy measuring unit which measures the energy of the reflective wave based on a detection signal detected by the reflective wave detecting unit; and a control unit which generates a reflective image about the money based on the detection signal detected by the reflective wave detecting unit and determines whether the money is counterfeit money based on the reflective image and the energy of the reflective wave. [Reference numerals] (10) Terahertz irradiating unit; (21) Reflective wave detecting unit; (23) Transmitted wave detecting unit; (30) Reflective wave energy measuring unit; (40) Control unit; (50) Memory unit; (60) Output unit

Description

Gastric lung detection device and detection method using terahertz electromagnetic wave {METHOD AND APPARATUS FOR DETECTING COUNTERFEIT MONEY USING TERAHERTZ ELECTROMAGNETIC WAVE}

The present invention relates to a gastric pulmonary detection device and detection method using terahertz electromagnetic waves, and more particularly, to detect the gastric pulmonary lung using terahertz electromagnetic waves and to detect whether or not to counterfeit money. It is about a method.

In general, the bill counter is a device for counting the bills, but the conventional bill counter has only a function for counting bills, but in recent years, a bill counter that can determine whether the banknote counterfeit and paper types.

For example, a method of recognizing a piece of paper by detecting fragmentary features such as the size or color of a paper money, and scanning the image of the paper money and comparing it with a basic paper money image to use the similarity between two images or an infrared (IR) sensor. A method of determining whether gastric obstruction is proposed using a magnetic (MG) sensor, an ultraviolet (UV) sensor, a fluorescent (FL) sensor, or the like has been proposed.

However, in the related art, when determining whether the counterfeit is made using the front image of the banknote, there is a problem that the accuracy of the counterfeit or the pneumoconiosis is poor.

On the other hand, terahertz (THz) electromagnetic waves in the range of 100 [GHz] to 10 [THz] can transmit non-metals and nonpolar materials, and have a transmittance higher than IR (infrared rays), which is used to check the authenticity of bills and documents. Higher images can be obtained, and even if the image is reduced, there is no image distortion due to pixel change. Terahertz (THz) electromagnetic waves are expected to provide a new concept of analytical technology in a wide variety of fields, including medical, agricultural, food, environmental measurement, bio, safety, and advanced materials evaluation, because the resonant frequencies of a wide variety of molecules are distributed in this region. It is expected.

In addition, signals in the terahertz (THz) band are emerging as an essential core technology for realizing a human-centered ubiquitous society because they have little effect on the human body due to very low energy of several [meV] levels.

Background art of the present invention is disclosed in Korean Unexamined Patent Publication No. 2001-0076926 (August 17, 2001).

Accordingly, the technical problem to be achieved by the present invention, the detection and forgery detection device using a terahertz electromagnetic waves to easily and accurately determine whether the counterfeit money using the reflected or transmitted waves generated by the irradiation of terahertz electromagnetic waves To provide a way.

According to one aspect of the invention, the present invention comprises the steps of irradiating a terahertz wave to money by operating a terahertz irradiator; Detecting, by a reflected wave detector, a reflected wave reflected from the money; Generating, by the controller, a reflection image of the money based on the detection signal detected by the reflection wave detector; And determining, by the controller, whether the money is counterfeit using the reflected image. The method for detecting forgery using terahertz electromagnetic waves is provided.

According to another aspect of the invention, the present invention is a terahertz irradiation unit for irradiating the terahertz wave to money; A reflected wave detector for detecting reflected waves reflected from the money; And a controller configured to generate a reflected image of the money based on the detection signal detected by the reflected wave detector, and determine whether the money is counterfeit using the reflected image. It provides a gastric lung detection device.

According to another aspect of the present invention, the present invention comprises the steps of irradiating the terahertz wave to money by operating the terahertz irradiation unit; A transmission wave detection unit detecting the transmission wave passing through the money; Generating, by the control unit, a transmission image of the currency based on the detection signal detected by the transmission wave detection unit; And determining, by the controller, whether the money is counterfeit using the transmitted image. The method for detecting forgery using terahertz electromagnetic waves is provided.

According to another aspect of the invention, the present invention is a terahertz irradiation unit for irradiating the terahertz wave to money; Transmission wave detection unit for detecting the transmission wave transmitted through the money; And a control unit generating a transmission image of the money based on the detection signal detected by the transmission wave detection unit, and determining whether the currency is counterfeit using the transmission image. It provides a gastric pulmonary detection device using.

According to another aspect of the present invention, the present invention comprises the steps of irradiating the terahertz wave to money by operating the terahertz irradiation unit; Detecting, by a reflected wave detector, a reflected wave reflected from the money; Measuring, by the reflected wave energy measuring unit, the reflected wave energy of the reflected wave based on the detection signal detected by the reflected wave detector; And determining, by the controller, whether the money is counterfeit based on the measured reflected wave energy. The method for detecting the counterfeit using terahertz electromagnetic waves.

According to another aspect of the invention, the present invention is a terahertz irradiation unit for irradiating the terahertz wave to money; A reflected wave detector for detecting reflected waves reflected from the money; And a reflected wave energy measuring unit measuring the reflected wave energy of the reflected wave based on the detection signal detected by the reflected wave detecting unit. And a controller for determining whether the money is counterfeit based on the measured reflected wave energy. The apparatus for detecting the counterfeit using terahertz electromagnetic waves is provided.

According to another aspect of the invention, the present invention is a terahertz irradiation unit for irradiating the terahertz wave to money; A reflected wave detector for detecting reflected waves reflected from the money; Transmission wave detection unit for detecting the transmission wave transmitted through the money; And generate a reflection image of the money based on the detection signal detected by the reflection wave detection unit, and generate a transmission image of the money based on the detection signal detected by the transmission wave detection unit. It provides a forgery detection device using a terahertz electromagnetic wave, characterized in that it comprises a control unit for determining whether or not the counterfeit money using a transmission image. The present invention further includes a reflected wave energy measuring unit for measuring the reflected wave energy of the reflected wave based on the detection signal detected by the reflected wave detector, wherein the controller further determines whether the currency is counterfeit based on the measured reflected wave energy. It is desirable to.

According to another aspect of the invention, the present invention is a terahertz irradiation unit for irradiating the terahertz wave to money; A reflected wave detector for detecting reflected waves reflected from the money; A reflected wave energy measuring unit measuring the reflected wave energy of the reflected wave based on the detection signal detected by the reflected wave detecting unit; And a controller configured to generate a reflected image of the money based on the detection signal detected by the reflected wave detector, and determine whether the money is counterfeit based on the reflected image and the reflected wave energy. Provided is a gastric pulmonary detection device using terahertz electromagnetic waves.

Forgery detection device and detection method using the terahertz electromagnetic waves according to the present invention not only makes it easy and accurate to determine whether the money is counterfeit using the reflected or transmitted waves generated by the irradiation of the terahertz electromagnetic waves, the existing CIS It is also expected to simplify the structure and reduce the cost because it is possible to detect forgery without using image sensors such as CMOS, CMOS, and IR, MG, and UV sensors.

1 illustrates a configuration of a gastric pulmonary detection apparatus using terahertz electromagnetic waves according to an embodiment of the present invention.
FIG. 2 is an exemplary view schematically showing the configuration of the terahertz irradiator, the reflected wave detector, and the transmitted wave detector in the counterfeit detection apparatus using the terahertz electromagnetic waves according to the present embodiment.
3 is an exemplary view showing in detail the configuration of the terahertz irradiator, the reflected wave detector, the transmission wave detector in the forgery detection device using the terahertz electromagnetic waves according to the present embodiment.
FIG. 4 is a flowchart illustrating a gastric pulmonary detection method using a reflected image of money by terahertz electromagnetic waves in the present embodiment.
FIG. 5 is a flowchart illustrating a gastric pulmonary detection method using a transmission image of money by terahertz electromagnetic waves in the present embodiment.
FIG. 6 is a flowchart for describing a false forgery detection method using reflected wave energy of reflected waves caused by terahertz electromagnetic waves in the present embodiment.
FIG. 7 is an exemplary view for explaining a gastric pulmonary detection method using a reflection image or a transmission image of money by terahertz electromagnetic waves in the present embodiment.
FIG. 8 shows the counterfeiting and exhaustion of the reflectance of the reflected wave energy with respect to the energy of the terahertz wave irradiated with money in the present embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Figure 1 shows the configuration of the gastric pulmonary detection device using the terahertz electromagnetic waves according to an embodiment of the present invention, Figure 2 is a terahertz irradiation unit, reflected wave detection unit in the gastric pulmonary detection device using the terahertz electromagnetic waves according to the present embodiment 3 is an exemplary view schematically illustrating a configuration of a transmission wave detection unit, and FIG. 3 illustrates an example of a configuration of a terahertz irradiation unit, a reflection wave detection unit, and a transmission wave detection unit in the forgery detection apparatus using the terahertz electromagnetic wave according to the present embodiment. Referring to the drawings, the present invention will be described below.

As shown in Figures 1 to 3, the forgery detection device using the terahertz electromagnetic waves according to the present embodiment, the terahertz irradiation unit 10 for irradiating the terahertz wave to the money 100; A reflected wave detector (21) for detecting reflected waves reflected from the money; Transmission wave detection unit 23 for detecting the transmission wave transmitted through the money; A reflected wave energy measuring unit 30 measuring the reflected wave energy of the reflected wave based on the detection signal detected by the reflected wave detector 21; And generate a reflected image of the money based on the detection signal detected by the reflected wave detector 21, and generate a transmitted image of the money based on the detected signal detected by the transmitted wave detector 23. And a controller 40 for determining whether the money is counterfeit using at least one of the reflected image, the transmitted image, and the reflected wave energy.

In determining whether the counterfeit is detected, the controller 40 compares an average value of luminance values of each pixel within a preset first ROI of the reflective image with a predetermined reference luminance value, and preset second second of the transmitted image. Whether the money is counterfeit can be determined by at least one of detecting the presence of a silver image in the ROI.

In addition, the controller 40 may further determine whether the money is counterfeit based on the measured reflected wave energy. In particular, the controller 40 may determine the currency as counterfeit if the reflectance of the reflected wave energy with respect to the energy of the terahertz wave irradiated to the currency is greater than a predetermined reference reflectance.

The counterfeit detection apparatus using terahertz electromagnetic waves according to the present embodiment focuses the terahertz waves irradiated from the terahertz irradiator 10 and irradiates them with money 100 to mirror the first mirror 61 and money 100. The second mirror 62 may further include a second mirror 62 for focusing the terahertz electromagnetic waves passing through the input wave to the transmitted wave detector 23. That is, the terahertz wave irradiated from the terahertz irradiator 10 is irradiated to the money 100 by the first mirror 61, and the terahertz electromagnetic wave transmitted through the money 100 is transmitted by the second mirror 62. It may be input to the wave detector 23.

The operation and operation of this embodiment configured as described above will be described in detail with reference to FIGS. 1 to 8.

The counterfeit detection device using the terahertz electromagnetic wave according to the present embodiment irradiates the terahertz wave to money, from the reflected image of money generated from the reflected wave reflected from the money, from the transmitted image and money generated from the transmitted wave transmitted money. Whether the money is counterfeit can be determined using at least one of the reflected wave energy of the reflected reflected wave. That is, the counterfeit detection apparatus using the terahertz electromagnetic wave according to the present embodiment may determine whether the counterfeit is detected using only one of the reflected image of the money, the transmitted image of the money, and the reflected wave energy of the reflected wave. You can also determine. Hereinafter, a method of detecting counterfeit of money according to each of the three methods will be described.

Gastric lung detection using reflection image

First, the gastric pulmonary detection method using the reflection image will be described with reference to FIG. 4.

As shown in FIG. 4, the controller 40 operates the terahertz irradiator 10 to irradiate the terahertz wave to the money 100 (S401). In addition, the reflected wave detector 21 detects the reflected wave reflected from the money 100 and provides an electric signal thereto to the controller 40 (S402).

Subsequently, the controller 40 generates a reflection image of the money based on an electrical signal input from the reflected wave detector 21, that is, a detected signal detected by the reflected wave detector 21 (S403).

Next, the controller 40 determines whether the money is counterfeit using the reflected image. In detail, the controller 40 calculates a luminance value of each pixel within a preset ROI of the reflected image and calculates an average value of the luminance values (S404). Here, the region of interest refers to a region in the reflection image corresponding to the region where the hologram or the hidden line is located in the currency, and as shown in FIG. It refers to a specific area within the reflected image. The luminance value has a larger value as the luminance is higher and a lower value as the luminance is lower. For example, the lightest color (white) is 255 and the darkest color (black) is 0. You can also set it differently.

Subsequently, the controller 40 determines whether the currency is counterfeit by comparing an average value of luminance values of each pixel in the ROI with a predetermined reference luminance value (S405). As described above, since the region of interest is a region in the reflection image corresponding to the region where the hologram or the hidden line is located in the currency, the reflectance is higher than other regions in the case of pulsation, so that the luminance of the pixel in the region as shown in FIG. Values are high compared to other areas. Therefore, if the average value of the luminance values of each pixel in the region of interest is higher than the predetermined reference luminance value, this currency may be determined to be pulsating. On the contrary, if the average value is less than the reference luminance value, the currency may be determined to be counterfeit. In this way, if it is determined whether the currency is pneumatic or counterfeit, the controller 40 may output it through the output unit 60 of FIG. 1.

Meanwhile, in the above embodiment, the average value of the luminance values of the pixels in the ROI is used, but the present invention is not limited thereto, and the intermediate values of the luminance values may be used, and only some specific luminance values may be used. In addition, in some other way, the counterfeit may be determined using the luminance value.

According to the present exemplary embodiment, the luminance value may be calculated only for the ROI, and according to the result, the counterfeit may be determined, thereby reducing the time required for calculation and increasing the accuracy of the counterfeit discrimination.

Gastric lung detection using transmission image

Next, the gastric pulmonary detection method using the transmission image will be described with reference to FIG. 5.

As shown in FIG. 5, the controller 40 operates the terahertz irradiator 10 to irradiate the terahertz wave to the money 100 (S501). In addition, the transmission wave detection unit 23 detects the transmission wave transmitted through the money 100 and provides an electric signal corresponding thereto to the control unit 40 (S502).

Subsequently, the controller 40 generates a transmission image for the currency based on an electrical signal input from the transmission wave detector 23, that is, a detection signal detected by the transmission wave detector 23 (S503).

Next, the controller 40 determines whether the money is counterfeit using the transmitted image. In detail, the controller 40 detects the presence or absence of a silver image in the preset ROI of the transmission image (S504). Here, the region of interest refers to a region in the transparent image corresponding to the region where the silver coin is located in the coin, and as shown in FIG. Refers to a specific area within an image.

In detecting the presence or absence of a silver image, the controller 40 may compare the luminance value of each pixel in the ROI with a preset reference value or compare the ROI with a preset master pattern. The presence or absence can be detected. That is, the controller 40 may compare the average value, the median value, or the luminance value of a specific pixel of each pixel in the ROI with a preset reference value and detect that there is a silver when it is lower than this. As long as the luminance value of each pixel in the ROI is used, any other method may be applied.

In addition, the controller 40 may detect the presence of the silver image by comparing the ROI with a pre-stored master pattern, and the controller 40 transmits the ROI of the transmitted image to the memory 50. By comparing with the stored master pattern, it is possible to detect that silver is present when the region of interest matches the master pattern as a result of the comparison.

Subsequently, the controller 40 determines whether the money is counterfeit based on the presence or absence of the silver image (S505). As described above, since the ROI corresponds to a region where a silver coin, which is a hidden picture in the coin, is located, it will be detected that silver exists in this region as shown in FIG. Therefore, if there is a silver coin in the region of interest, it can be determined that it is puffiness. In this way, if it is determined whether the currency is pneumatic or counterfeit, the controller 40 may output it through the output unit 60 of FIG. 1.

As described above, according to the present embodiment, the terahertz wave having a high permeability can be irradiated to the money to generate a transparent image of the silver part of the money relatively clearly, so that the counterfeit of the money can be easily and accurately determined. In addition, when the pattern of the region of interest is extracted and compared with the master pattern, there is an advantage in that it is possible to reduce the calculation time required to determine whether the counterfeit is detected.

Counterfeit detection method using reflected wave energy of reflected wave

Referring to FIG. 6 and FIG. 8, the forgery detection method using the reflected wave energy of the reflected wave is as follows.

As shown in FIG. 6, the controller 40 operates the terahertz irradiator 10 to irradiate the terahertz wave to the money 100 (S601). Then, the reflected wave detector 21 detects the reflected wave reflected from the money 100 (S602).

Subsequently, the reflected wave energy measuring unit 30 measures the reflected wave energy of the reflected wave based on the electrical signal input from the reflected wave detector 21, that is, the detected signal detected by the reflected wave detector 21 (S603). Here, the reflected wave energy refers to the energy of the reflected wave reflected from the money when the terahertz wave of a specific output is irradiated on the money.

Next, the controller 40 determines whether the money is counterfeit based on the reflected wave energy measured by the reflected wave energy measuring unit 30 (S604). Paper of bills plays an absolute role in preventing the quality, forgery, and alteration of bills. Unlike real paper, some papers, such as cotton, are used in some countries, such as the United States, the United Kingdom, and France. do. Therefore, in the case of real banknotes, the characteristics of the reflected waves reflected from the banknotes when terahertz waves are irradiated are also different from those of ordinary papers. Has characteristics.

Therefore, in the present embodiment, when determining whether or not counterfeit, the control unit 40 determines whether the counterfeit is based on the reflectance (reflected wave / irradiated terahertz wave) of the reflected wave energy with respect to the energy of the terahertz wave irradiated to the money. In particular, the control unit 40 determines that the currency is counterfeit if the reflectance is greater than a predetermined reference reflectance (for example, 0.5), and determines that the currency is depletion. In this way, if it is determined whether the currency is pneumatic or counterfeit, the controller 40 may output it through the output unit 60 of FIG. 1.

According to the present embodiment, by measuring only the energy of the terahertz wave irradiated to the money and the energy of the reflected wave reflected from the money, it is possible to determine whether the currency is counterfeit relatively simply and accurately.

As described above, the counterfeit detection device using the terahertz electromagnetic wave according to the present embodiment irradiates the terahertz wave to money, i) the reflected image of the money generated from the reflected wave reflected from the money, ii) transmitted wave transmitted through the money Whether the currency is counterfeit can be determined by using at least one of the transmitted image generated from and the reflected wave energy of the reflected wave reflected from the money. That is, the counterfeit detection apparatus using the terahertz electromagnetic wave according to the present embodiment may determine whether the counterfeit is detected using only one of the reflected image of the money, the transmitted image of the money, and the reflected wave energy of the reflected wave. You can also determine.

Therefore, the counterfeit detection apparatus using the terahertz electromagnetic wave according to the present embodiment can not only determine whether the counterfeit is detected by using the reflected image of the money and the transmitted image of the money, but also by using the reflected image of the money and the reflected wave energy of the reflected wave. Whether or not counterfeit may be determined, and whether or not counterfeit may be determined using all of the reflected image of the money, the transmitted image of the money, and the reflected wave energy of the reflected wave. However, in the case of determining whether the counterfeit is made using two or more of i) reflected image of money, ii) transmitted image, and iii) reflected wave energy of reflected wave, the determination result according to each method may be different. Weighted or prioritized results for each method may be used to make a final determination of counterfeiting. For example, when all three methods are used, priority is given in the order of i) (judgment result using reflected image of money)-(judgment result using reflected wave energy of reflected wave)-(judgment result using transmitted image). The final decision may be made by making a final decision, or ii) making a final decision based on two or more decision results having the same result among three methods, or iii) giving a weight in the order of the most reliable method among the three methods.

As described above, according to the present invention, it is possible to easily and accurately determine whether money is counterfeit using reflected waves or transmitted waves generated by irradiation of terahertz electromagnetic waves.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (25)

Controlling the terahertz wave by operating the terahertz irradiator;
Detecting, by a reflected wave detector, a reflected wave reflected from the money;
Generating, by the controller, a reflection image of the money based on the detection signal detected by the reflection wave detector; And
And determining, by the controller, whether the money is counterfeit using the reflected image. The method for detecting forgery using terahertz electromagnetic waves.
The method according to claim 1,
Determining whether or not the counterfeit,
Calculating, by the controller, a luminance value of each pixel within a preset ROI of the reflection image; And
And determining, by the controller, whether the money is counterfeit based on the calculated luminance value. The method for detecting forgery using terahertz electromagnetic waves.
3. The method of claim 2,
And the control unit determines whether the currency is counterfeit by comparing the average value of the luminance values of the respective pixels in the ROI with a predetermined reference luminance value, wherein the counterfeit detection method using terahertz electromagnetic waves. .
A terahertz irradiation unit for irradiating terahertz waves to money;
A reflected wave detector for detecting reflected waves reflected from the money; And
And a control unit for generating a reflection image of the money based on the detection signal detected by the reflection wave detection unit, and determining whether the money is counterfeit using the reflection image. Gastric lung detection device.
5. The method of claim 4,
In determining whether the counterfeit is determined, the controller calculates a luminance value of each pixel within a preset ROI of the reflected image, and determines whether the currency is counterfeit based on the calculated luminance value. Gastric lung detection device using terahertz electromagnetic waves.
6. The method of claim 5,
And the control unit determines whether the money is counterfeit by comparing the average value of the luminance values of each pixel in the ROI with a predetermined reference brightness value, wherein the counterfeit detection device using terahertz electromagnetic waves.
6. The method according to claim 2 or 5,
The region of interest includes a region in the reflected image corresponding to the region where the hologram or the hidden line in the currency is located, the gastric lung detection method or gastric lung detection apparatus using terahertz electromagnetic waves.
Controlling the terahertz wave by operating the terahertz irradiator;
A transmission wave detection unit detecting the transmission wave passing through the money;
Generating, by the control unit, a transmission image of the currency based on the detection signal detected by the transmission wave detection unit; And
And determining, by the controller, whether the money is counterfeit using the transmitted image. The method for detecting forgery using terahertz electromagnetic waves.
9. The method of claim 8,
Determining whether or not the counterfeit,
Detecting, by the controller, whether a silver image is present in a preset ROI of the transmitted image; And
And determining, by the controller, whether or not the money is counterfeit based on the presence of the silver image. The method for detecting forgery using terahertz electromagnetic waves.
10. The method of claim 9,
The controller may detect whether the silver image is present by comparing a luminance value of each pixel in the ROI with a preset reference value or by comparing the ROI with a preset master pattern. Gastric lung detection method using Hertz electromagnetic waves.
A terahertz irradiation unit for irradiating terahertz waves to money;
Transmission wave detection unit for detecting the transmission wave transmitted through the money; And
And a control unit for generating a transmission image of the money based on the detection signal detected by the transmission wave detection unit, and determining whether the currency is counterfeit using the transmission image. Gastric lung detection device using.
12. The method of claim 11,
When determining whether the counterfeit is present, the controller detects whether a silver coin image exists in a preset ROI of the transmitted image and determines whether the coin is counterfeit based on the presence of the silver coin image. Gastric lung detection device using hertz electromagnetic waves.
13. The method of claim 12,
The controller may detect whether the silver image is present by comparing a luminance value of each pixel in the ROI with a preset reference value or by comparing the ROI with a preset master pattern. Gastric lung detection device using hertz electromagnetic waves.
Controlling the terahertz wave by operating the terahertz irradiator;
Detecting, by a reflected wave detector, a reflected wave reflected from the money;
Measuring, by the reflected wave energy measuring unit, the reflected wave energy of the reflected wave based on the detection signal detected by the reflected wave detector; And
And determining, by the controller, whether the money is counterfeit based on the measured reflected wave energy. The method for detecting forgery using terahertz electromagnetic waves.
15. The method of claim 14,
In determining whether the forgery,
And the control unit determines whether the money is counterfeit based on the reflectance of the reflected wave energy with respect to the energy of the terahertz wave irradiated to the money, the counterfeit detection method using terahertz electromagnetic waves.
16. The method of claim 15,
And the control unit determines that the currency is counterfeit if the reflectance is greater than a predetermined reference reflectance. The method for detecting forgery using terahertz electromagnetic waves.
A terahertz irradiation unit for irradiating terahertz waves to money;
A reflected wave detector for detecting reflected waves reflected from the money; And
A reflected wave energy measuring unit measuring the reflected wave energy of the reflected wave based on the detection signal detected by the reflected wave detecting unit; And
And a control unit for determining whether money is counterfeit based on the measured reflected wave energy. The apparatus for detecting forgery using terahertz electromagnetic waves.
18. The method of claim 17,
In determining whether the counterfeit is detected, the controller determines whether the money is counterfeit based on the reflectance of the reflected wave energy with respect to the energy of the terahertz wave irradiated to the money, the counterfeit detection device using terahertz electromagnetic waves. .
19. The method of claim 18,
And the control unit determines that the currency is counterfeit if the reflectance is greater than a predetermined reference reflectance, forgery detection device using terahertz electromagnetic waves.
A terahertz irradiation unit for irradiating terahertz waves to money;
A reflected wave detector for detecting reflected waves reflected from the money;
Transmission wave detection unit for detecting the transmission wave transmitted through the money; And
Generate a reflected image of the money based on the detection signal detected by the reflected wave detector, generate a transmitted image of the money based on the detected signal detected by the transmitted wave detector, and transmit the reflected image and the transmitted image And a control unit for determining whether the money is counterfeit using an image. The apparatus for detecting forgery using terahertz electromagnetic waves.
21. The method of claim 20,
When determining whether the counterfeit, the control unit
Comparing an average value of luminance values of each pixel in the first preset ROI of the reflection image with a predetermined reference luminance value, and detecting whether a silver image is present in the second preset ROI of the transmitted image; Determination of whether or not the counterfeit money by the, characterized in that for detecting the stomach using terahertz electromagnetic waves.
21. The method of claim 20,
Further comprising a reflected wave energy measuring unit for measuring the reflected wave energy of the reflected wave based on the detection signal detected by the reflected wave detector,
The control unit further determines whether the money is counterfeit based on the measured reflected wave energy, the counterfeit detection device using terahertz electromagnetic waves.
23. The method of claim 22,
And the control unit discriminates the money as counterfeit if the reflectance of the reflected wave energy with respect to the energy of the terahertz wave irradiated to the currency is greater than a predetermined reference reflectance.
A terahertz irradiation unit for irradiating terahertz waves to money;
A reflected wave detector for detecting reflected waves reflected from the money;
A reflected wave energy measuring unit measuring the reflected wave energy of the reflected wave based on the detection signal detected by the reflected wave detecting unit; And
And a controller configured to generate a reflected image of the money based on the detection signal detected by the reflected wave detector, and determine whether the money is counterfeit based on the reflected image and the reflected wave energy. Gastric lung detection device using hertz electromagnetic waves.
25. The method of claim 24,
The control unit
Comparing an average value of luminance values of each pixel in the preset first ROI of the reflected image with a predetermined reference luminance value, and reflectance of the reflected wave energy with respect to the energy of the terahertz wave irradiated to the money in advance The forgery detection device using a terahertz electromagnetic wave, characterized in that for determining whether the forgery by comparing with a set reference reflectance.

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