WO2018048001A1 - Smart tag recognition system using infrared-sensitive code and recognition method using same - Google Patents

Abstract

An embodiment of the present invention provides: a smart tag recognition system which emits an infrared laser beam toward an infrared-sensitive tag, in which a code is made of a material that absorbs infrared radiation and then emits emission light, and uses the emission light generated thereby; and a recognition method using same. The smart tag recognition system using an infrared-sensitive code according to an embodiment of the present invention includes: an infrared-sensitive tag attached to an object to be recognized, and comprising a background and a code formed on the background; an infrared light source unit having a function of emitting an infrared light beam to a surface of the infrared-sensitive tag; and an imaging unit receiving and recognizing the emission light from the infrared-sensitive tag, wherein the code is made of a material that absorbs infrared radiation and then emits emission light.

Description

Smart Tag Recognition System Using Infrared Sensing Code and Recognition Method Using The Same

The present invention relates to a smart tag recognition system using an infrared sensitive code and a recognition method thereof, and more particularly, by irradiating an infrared light source to an infrared sensitive tag that is formed of a material that absorbs infrared rays and emits emitted light. The present invention relates to a smart tag recognition system using the emitted light and a recognition method thereby.

In general, a recognition system using barcodes that visually shape data is widely used for tracking products and identifying basic product information in the fields of distribution, etc. Recently, these codes are used in factories to supply necessary parts in place. To automate the process. When used for factory automation, a device for acquiring image data for a code displayed on a part and the like and a device for analyzing the same are installed in a one-to-one corresponding structure.

As a device for recognizing codes such as barcodes, CCD or CMOS is used. A CCD is a digital camera that converts an image into an electrical signal using a charge coupled device as a digital camera. CMOS is a solid-state image pickup device using a complementary metal oxide semiconductor, and uses a photodiode similarly to a CCD, but has a different manufacturing process and a method of reading a signal, and is cheaper than a CCD.

Recently, RFID, which is a device that stores product information on a small chip and transmits data wirelessly by attaching an antenna, is used, but it is not suitable for cost in order to use RFID in large quantities.

In a recognition system such as a barcode, the extension of the recognition distance range significantly improves the value of the recognition system. In order to enlarge the recognition distance range, a technique for enlarging the depth of field, which means the distance range of the measurement side which appears to be in focus, is required. The present invention is directed to a technique for enlarging the depth of field by specifically configuring a tag having a code. It is about.

Republic of Korea Patent No. 10-0784200 (name of the invention: a method and apparatus for reading codes incorporating code information according to an image, hereinafter referred to as prior art 1), through the imaging module and imaging module for imaging the code A code information reading module for recognizing a code in the captured image and reading code information of the code, wherein the code comprises at least one data image having a data value and the code information reading module comprises an area, a shape of each data image. A code reading device is disclosed which reads out the code information by analyzing at least one of colors.

Since the conventional technique 1 uses general local illumination when recognizing code information, the brightness ratio decreases at a recognition distance of a certain range or more, making it difficult to accurately recognize and read the first information, and use an expensive imaging device to solve the problem. I have a problem.

In addition, since the prior art 1 uses illumination in the visible light region, there is a second problem in that it cannot cope with a decrease in recognition rate due to interference of light that may occur when working in various environments.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. There will be.

The present invention has been made in order to achieve the above technical problem, the infrared sensitive tag consisting of a background attached to the recognition object and a code formed on the background, and having a function of irradiating infrared rays to the surface of the infrared sensitive tag. It comprises an infrared light source and an imaging unit for receiving the incident light received from the infrared sensitive tag, the code is a smart tag using an infrared sensitive code, characterized in that the code is formed of a material that absorbs the infrared light and then emits the emitted light Provide a recognition system. The smart tag recognition system having such a configuration irradiates an infrared laser to a tag on which a code is formed and causes the tag to emit emitted light, so that the brightness ratio for recognition is significantly increased, so that accurate recognition and reading can be performed at a considerable distance. This has the effect of being applicable to large recognition objects.

According to the present invention, the infrared laser is irradiated to a tag having a code and the tag emits emitted light, so that the brightness ratio for recognition is significantly increased, so that accurate recognition and reading can be performed at a considerable distance, and thus a large recognition target can be applied. It has a first effect that it is also applicable.

The present invention has the second effect that the cost of equipment can be reduced because the depth of field can be increased by increasing the brightness ratio without using an expensive imaging device.

Since the present invention uses an infrared light source instead of the general local illumination, there is a third effect that the interference of light, which may occur when working in various environments, does not occur, and thus the recognition rate can be maintained constantly.

The present invention has the fourth effect that codes can be formed in tags in various colors and shapes, can be recognized and read by an imaging module composed of a plurality of imaging units, and can quickly process various information.

In addition, the present invention, unlike the prior art to continuously operate the local illumination, operate the infrared light source only when necessary has an excellent fifth effect in terms of energy efficiency.

The effects of the present invention are not limited to the above-described effects, but should be understood to include all the effects deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a schematic diagram of a smart tag recognition system using an infrared sensitive code according to an embodiment of the present invention.

2 is an exemplary view of an infrared ray sensitive tag of the present invention.

3 is a graph of the intensity of emitted light emitted by the code of the infrared sensitive tag when the infrared light source irradiates the infrared sensitive tag with a light ray according to an exemplary embodiment of the present invention.

4 is a schematic diagram of a smart tag recognition system using an infrared sensitive code that can process multicolor codes according to an embodiment of the present invention.

5 is a flowchart illustrating a smart tag recognition method using an infrared ray sensitive code according to an embodiment of the present invention.

In order to achieve the above technical problem, one embodiment of the present invention, the infrared sensitive tag consisting of a background and a code attached to the recognition object, and has a function of irradiating infrared rays to the surface of the infrared sensitive tag. Including an infrared light source unit and an imaging unit for receiving the incident light from the infrared sensitive tag to recognize, the code is smart using the infrared sensitive code, characterized in that formed of a material that absorbs the infrared light and then emits the emitted light Provide a tag recognition system.

In an embodiment of the present disclosure, the imaging unit may further include a color filter that filters the emitted light emitted by the infrared sensitive tag to improve the brightness ratio between the code and the background.

In an embodiment of the present invention, the color filter may pass only light having a wavelength band of emission light emitted by the infrared ray sensitive tag.

In an embodiment of the present disclosure, the imaging unit may further include an apparatus that enables the algorithm to recognize only light in a specific wavelength band by itself.

In an embodiment of the present invention, the wavelength of the emitted light emitted by the infrared sensitive tag may be a wavelength in the visible light region.

In an embodiment of the present invention, the wavelength of the infrared rays irradiated by the infrared light source unit may be 700 nanometers (nm) or more.

In an embodiment of the present invention, the wavelength of the infrared rays irradiated by the infrared light source may be 1400 or more and 1500 nanometers (nm) or less.

In an embodiment of the present invention, the infrared light source unit may have a function of adjusting the wavelength of the light to be irradiated.

In an embodiment of the present invention, the infrared sensitive tag, the form of the code formed may be a bar code (bar code) or a square code (QR code).

In an embodiment of the present invention, the background may be formed in a black color.

In an embodiment of the present invention, the background may be formed such that its color is the same as the color of the code in the infrared unilluminated state.

In an embodiment of the present invention, a smart tag recognition system using an infrared sensitive code, the position sensor for detecting the position or the movement state of the recognition target to which the infrared sensitive tag is attached to transmit a signal to drive the infrared light source unit. It may further include.

In order to achieve the above technical problem, another embodiment of the present invention, the infrared sensitive tag is attached to the recognition object, the code is formed of a material that absorbs infrared radiation and emits emitted light, the infrared ray on the surface of the infrared sensitive tag An infrared light source unit having a function of irradiating light rays, an imaging unit that receives and recognizes emitted light from the infrared sensitive tag, and processes information of the infrared sensitive tag recognized by the imaging unit, and stores or utilizes the processed information It provides a smart tag recognition processing system using an infrared sensitive code, characterized in that comprises a server having a.

In order to achieve the above technical problem, another embodiment of the present invention, the infrared sensitive tag is attached to the recognition object, the code is formed of a material that absorbs infrared radiation and emits emitted light, the infrared ray on the surface of the infrared sensitive tag And an infrared light source unit having a function of irradiating light rays, an imaging module including a plurality of imaging units which receive and recognize emission light from the infrared sensitive tag, and a color filter for filtering the emitted light emitted by the infrared sensitive tag. In addition, the color filter installed in each of the imaging unit provides a smart tag recognition system using an infrared sensitive code that can process a multi-color code, characterized in that only passing light having a predetermined wavelength.

In an embodiment of the present invention, a smart tag recognition system using an infrared sensitive code that can process a multi-color code, so that the infrared light source unit is driven by detecting the position or the movement state of the recognition target to which the infrared sensitive tag is attached. It may further include a position sensor for transmitting a signal.

In an embodiment of the present invention, a smart tag recognition system using an infrared sensitive code that can process multicolor codes has a function of processing information of the infrared sensitive tag recognized by the imaging unit, and storing or utilizing the processed information. It may further include a server having a.

In order to achieve the above technical problem, another embodiment of the present invention, i) attaching an infrared sensitive tag having a code formed of a material that absorbs infrared rays and then emits emitted light to a recognition object, ii) the recognition object Detecting, by the position sensor, a position or movement state of the position sensor; iii) transmitting a signal from the position sensor to the infrared light source unit, irradiating the infrared light source to the infrared ray sensitive tag, and iv) irradiating the infrared light beam. It provides a smart tag recognition method using an infrared sensitive code, characterized in that the infrared sensitive tag comprises the step of emitting emitted light and recognized by the imaging unit.

In an embodiment of the present invention, step i) may be performed by printing the form of the code by an inkjet printer using an ink containing a material which absorbs infrared rays and emits emitted light.

In an embodiment of the present disclosure, after the step iv) is performed, the method may further include processing information of the infrared ray sensitive tag recognized by the imaging unit, and storing or utilizing the processed information.

In step iv), a color filter for improving the brightness ratio with respect to the code and the background is provided in the image pickup unit, and may be performed while filtering the emitted light emitted by the infrared ray sensitive tag.

Step iv) may be performed by an imaging module having a plurality of imaging units.

The step iv) may be performed while the color filters installed in each of the imaging units pass only light having a predetermined wavelength.

Hereinafter, with reference to the accompanying drawings will be described 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 the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, coupled)" with another part, it is not only "directly connected" but also "indirectly connected" with another member in between. "Includes the case. In addition, when a part is said to "include" a certain component, this means that it may further include other components, without excluding the other components unless otherwise stated.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

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

1 is a schematic diagram of a smart tag recognition system using an infrared sensitive code according to an embodiment of the present invention, Figure 2 is an exemplary view of an infrared sensitive tag 100 of the present invention.

As shown in FIG. 1, the smart tag recognition system using an infrared ray sensitive code includes an infrared ray sensitive tag 100 and an infrared ray ray sensitive tag 100 formed on a background 120 and a code 110 formed on a background 120. Including an infrared light source unit 200 having a function of irradiating infrared rays to the surface of the tag 100 and the imaging unit 310 to receive and recognize the emitted light from the infrared sensitive tag 100, the code ( 110 may be formed of a material that absorbs infrared rays and then emits emitted light.

As shown in FIG. 2, the infrared ray sensitive tag 100 is formed of a code 110 and a background 120. Here, the cord 110 may be formed of a material that absorbs infrared rays and emits emitted light, or conversely, a background 120 may be formed while leaving a portion of the cord 110. A description will be given based on the infrared ray sensitive tag 100 having the 110 formed thereon. Such criteria would be desirable when considering aspects such as cost.

The material that absorbs the infrared rays that form the cord 110 of the infrared ray sensitive tag 100 and then emits the emitted light is a material that absorbs the infrared rays and emits light, and is reversibly irradiated by the infrared rays only at the position where the infrared light source is incident. It means a material emitting self. Specifically, infrared-sensitive materials include two-photon absorption materials, second harmonic generation materials, upconversion by excited state absorption, and sensitive energy transfer. And one or more of Upconversion by sensitised energy transfer, Upconversion by cooperative luminescence, and Upconversion by photon avalanche.

In the exemplary embodiment of the present invention, the infrared ray sensitive tag 100 is described as irradiating infrared rays. However, the present invention is not limited thereto, and a process including only a robot without human involvement does not consider eye protection. An ultraviolet ray or the like may be irradiated to a tag on which the cord 110 sensitive to ultraviolet rays or the like is formed.

The imaging unit 310 may further include a color filter 320 that filters the emitted light emitted by the infrared ray sensitive tag 100 to improve the brightness ratio between the code 110 and the background 120.

In addition to the emission light emitted by the code 110, the imaging unit 310 opened without the color filter 320 receives various reflected light reflected from the background 120 or the surface of the recognition object 10. These reflected light may interfere with the emitted light emitted by the code 110 to reduce the brightness ratio of the code 110 and the background 120.

Since the brightness ratio is improved by the color filter 320, recognition and reading may be possible even for a large recognition object 10 requiring a considerable range of recognition distances.

In the embodiment of the present invention, the color filter 320 is described as being fixed to the imaging unit 310, but is not necessarily limited thereto. The color filter 320 is made of a material whose properties vary according to the change of the current, and when the input current is adjusted, the color filter 320 can variably control the wavelength of light passing through. Alternatively, the plurality of color filters 320 may be combined into one color filter module to control the wavelength of light that is variably passed while the corresponding color filter module rotates.

The color filter 320 may pass only light having a wavelength band of emitted light emitted by the infrared ray sensitive tag 100.

The filtering to prevent the reduction of the brightness ratios for the code 110 and the background 120 is not limited to the visible light region for a particular color, but the infrared sensitive tag 100 can convey specific information by color, In order to select and recognize the information on the image pickup unit 310, a color filter 320 that passes only the emission light of a specific wavelength band may be used.

The color filter 320 may be manufactured by coating a material passing only light having a specific wavelength band on a plate formed of glass or transparent synthetic resin.

In the exemplary embodiment of the present invention, the color filter 320 is installed and filtered in the imaging unit 310, but the present invention is not limited thereto.

The imaging unit 310 may further include a device therein that enables to recognize only light in a specific wavelength band by itself by an algorithm. (Hereinafter referred to as the "internal device")

The internal device may perform the role of the color filter 320, and may have an algorithm that first passes through the light after analyzing the wavelength of the light and determining that the wavelength of the analyzed light is suitable. At this time, the passage and blocking of the light can be performed by the lens of the internal device in which the wavelength of light that can be transmitted by current or voltage is controlled.

In detail, when the red, green, and blue (RGB) are sequentially recognized using the CCD camera with a time difference, the imaging unit 310 configures an algorithm to pass only the color of a specific wavelength to perform color filtering. Can be.

The wavelength of the emitted light emitted by the infrared ray sensitive tag 100 may be a wavelength in the visible light region.

The wavelength of the visible light means that the emitted light emitted by the infrared ray sensitive tag 100 can be recognized as a color, and the specific information is given to the emitted light color, thereby depending on the color recognized by the imaging unit 310. The recognition object 10 may be controlled. In detail, the recognition object 10 may be moved to a sector corresponding to each color by dividing by color, or the robot may select the recognition object 10 having a specific color.

The wavelength of the infrared rays irradiated by the infrared light source unit 200 may be 700 nanometers (nm) or more.

Since the infrared light having a wavelength of 700 nanometers (nm) or more is used in general electronic devices such as a TV remote control, the infrared light source unit 200 capable of irradiating the infrared light having a wavelength of 700 nanometers (nm) or more is easily supplied. Therefore, it is possible to reduce the process cost by selecting an inexpensive infrared light source unit 200 suitable for the use conditions.

The wavelength of the infrared rays irradiated by the infrared light source unit 200 may be 1400 or more and 1500 nanometers (nm) or less.

When the infrared ray is 1400 or more and 1500 nanometers (nm) or less, even if it is irradiated to the human eye, it does not cause eye damage. Therefore, in a work environment in which people move frequently, a safe work environment may be established when the light wavelength of the infrared light source unit 200 is maintained at 1400 or more and 1500 nanometers (nm) or less.

The infrared light source unit 200 may have a function of adjusting the wavelength of the light beam to be irradiated.

Since the sensitivity of the material forming the cord 110 may vary depending on the wavelength of the light beam, the material having the high sensitivity at a specific wavelength may be irradiated with light of the corresponding wavelength. In addition, it may include a system for storing information on the type of the infrared ray sensitive tag 100 in advance and automatically adjusting the wavelength of the light beam irradiated by the infrared light source unit 200 according to the information.

The infrared ray sensitive tag 100 may have a bar code or a square code in the form of the formed code 110.

In the embodiment of the present invention, the shape of the code 110 is described as a bar code or a square code, but the code 110 is not necessarily limited thereto. matrix) or maxicode.

Code 110 may be formed to be recognized as a color other than black or black in the infrared non-irradiated state.

The background 120 may be formed of white or a color other than white, and in particular, may be formed of a black color. In general, the tag is formed with a white color of the background 120 and a color of the code 110, but the white color of the background 120 is removed in order to remove interference caused by reflected light reflected from the surface of the white color 120. If the background is formed of a black color, the reflected light of the background portion is minimized, and the contrast with the code can be maximized.

Furthermore, if the color of the background is formed to be the same as the color of the code in the infrared unilluminated state (under normal visible light illumination), the information of the code can be concealed. That is, it is possible to secure the security of the code information, which is an effect that can be implemented in a separate dimension from the fact that the emission color of the code in the infrared irradiation state has an important meaning in the present invention. As an embodiment for determining the color of the background at this time, when the emission color of the code in the infrared irradiation state is first determined in the implementation of the present invention, the same color as the color in the non-infrared state of the code material having such emission color You can choose the color of the background.

 Smart tag recognition system using the infrared sensitive code, the position sensor 400a for detecting the position or moving state of the recognition target 10 to which the infrared sensitive tag 100 is attached to transmit the signal to drive the infrared light source unit 200, 400b) may be further included.

As the position sensors 400a and 400b, a magnetic proximity switch or an optical photoelectric switch may be used, but various sensors may be used without being limited thereto.

Since the recognition object 10 may be moved by the robot to move on the conveyor belt or to be fixed to the jig, when the recognition object 10 is moved and fixed to the designated position, the position sensors 400a and 400b sense and detect a signal accordingly. The infrared ray transmitted to the infrared light source unit 200 may be irradiated to the infrared ray sensitive tag 100.

Smart tag recognition processing system using the infrared sensitive code, the infrared sensitive tag 100, the infrared sensitive tag (100) is formed of a material 110 attached to the recognition target 10 and absorbs infrared rays and emits emitted light. Infrared light source unit 200 having a function of irradiating infrared rays to the surface of 100, an imaging unit 310 and an infrared sensing unit recognized by the imaging unit 310 to receive and recognize emission light from the infrared response tag 100. It may include a server 500 for processing the information of the tag 100, and having a function of storing or utilizing the processed information.

The smart tag recognition processing system using the infrared sensitive code may be applied as part of a Manufacturing Execution System Shop Floor (MES), and in this case, the information processed by the server 500 may be transferred to the device of the next process to perform the corresponding process. . Specifically, the smart tag recognition process is performed before the assembly process, the recognition object 10 is put into the line of a specific assembly process by the recognition process information, according to the information of the infrared ray sensitive tag 100 in the assembly process. The assembly order may be determined so that the assembly may be sequentially performed by the robot. Furthermore, the information may be used at the stage of classification and management after the assembly process.

3 is a graph showing the intensity of emitted light emitted by the cord 110 of the infrared sensitive tag 100 when the infrared light source unit 200 emits light to the infrared sensitive tag 100 according to an exemplary embodiment of the present invention. Figure 3 (a) is a graph of the infrared intensity according to the time when the infrared light source unit 200 is operated and stopped, Figure 3 (b) is an infrared light source unit corresponding to the graph of Figure 3 (a). It is a graph of the intensity of the emitted light emitted by the code 110 in accordance with the irradiation and interruption of the infrared ray by (200).

As shown in FIG. 3, when the infrared light source unit 200 irradiates the cord 110 with an infrared ray with a constant intensity, the intensity of the emitted light emitted by the cord 110 is initially measured to a maximum temporarily and thereafter. It may have a characteristic that the measured value gradually decreases. When the irradiation of the infrared ray is stopped, the corresponding measured value may decrease rapidly.

Due to such a characteristic, the cord 110 may emit the light enough to be recognized by the imaging unit 310 by using the infrared ray of the infrared light source unit 200 that is temporarily irradiated. Therefore, since the infrared light source unit 200 does not need to continuously irradiate infrared rays, it may be excellent in terms of energy efficiency.

4 is a schematic diagram of a smart tag recognition system using an infrared sensitive code that can process multicolor codes according to an embodiment of the present invention. (The imaging module 300 is a collection of a plurality of imaging units 310, and is indicated by a dashed line.)

As shown in FIG. 4, the smart tag recognition system using an infrared ray sensitive code capable of processing a multi-color code includes a material 110 that is attached to a recognition object 10 and absorbs infrared rays and then emits emitted light. The infrared ray sensitive tag 100, the infrared ray source unit 200 having a function of irradiating infrared rays to the surface of the infrared ray sensitive tag 100, and an imaging unit that receives and recognizes emitted light from the infrared ray sensitive tag 100 ( It comprises a color filter 320 for filtering the emitted light emitted by the imaging module 300 and the infrared sensitive tag 100 having a plurality of 310, the color filter installed in each of the imaging unit 310 ( 320 may pass only light having a predetermined wavelength.

The imaging module 300, which is provided with a plurality of imaging units 310 that pass light having different wavelength bands, may quickly recognize the plurality of recognition objects 10. Furthermore, even if a plurality of infrared ray sensitive tags 100 are attached to one recognition object 10 or a cord 110 is formed of a plurality of materials for emitting emission light of different wavelengths on the infrared ray sensitive tag 100, the image is captured. All may be recognized by the module 300.

The infrared light source unit 200 may change the irradiation angle to irradiate the infrared rays to the plurality of infrared ray sensitive tags 100, and may be provided in plural numbers according to working characteristics.

The imaging unit 310 of the imaging module 300 may be arranged in a line or rectangular shape to be applicable to various applications. The angle of each imaging unit 310 in a line or rectangular array may vary depending on the shape of the infrared ray sensitive tag 100. Specifically, when there is only one recognition object 10, the angle may be controlled such that the optical axes of the respective imaging units 310 intersect in the target code 110, and the recognition object 10 is multiple and separate. When it is necessary to recognize each infrared ray sensitive tag 100 at the position of, the angle may be controlled such that the optical axes of the respective imaging units 310 are parallel to each other.

The smart tag recognition system using the infrared sensitive code that can process the multi-color code, detects the position or the movement state of the recognition target 10 is attached to the infrared sensitive tag 100 so that the infrared light source unit 200 to drive a signal It may further include a position sensor 400a, 400b for transmitting.

A smart tag recognition system using an infrared sensitive code that can process multicolor codes has a function of processing information of the infrared sensitive tag 100 recognized by the imaging unit 310 and storing or utilizing the processed information. The server 500 may further include.

5 is a flowchart illustrating a smart tag recognition method using an infrared ray sensitive code according to an embodiment of the present invention.

A smart tag recognition method using an infrared ray sensitive code as shown in FIG. 5 will be described.

First, an infrared ray sensitive tag 100 having a cord 110 formed of a material that absorbs infrared rays and emits emitted light may be attached to the recognition target 10.

Here, the first step S10 may be performed by printing the shape of the code 110 by an inkjet printer using an ink containing a material that absorbs infrared rays and emits emitted light.

Since the code 110 is formed by the inkjet printer, the infrared ray sensitive tag 100 can be manufactured at low cost. In addition, since the inkjet printer uses a method of ejecting ink, the material may be uniformly printed on the infrared ray sensitive tag 100.

Second, the position sensors 400a and 400b may detect the position or the movement state of the recognition object 10. (S20)

Third, a signal is transmitted from the position sensors 400a and 400b to the infrared light source unit 200, so that the infrared light source unit 200 may irradiate the infrared ray sensitive tag 100 with the infrared light source (S30).

Fourth, the infrared ray sensitive tag 100 irradiated with the infrared rays may emit light emitted and may be recognized by the imaging unit 310. (S40)

In this case, after the fourth step S40 is performed, the method may further include processing information of the infrared ray sensitive tag 100 recognized by the imaging unit 310 and storing or utilizing the processed information.

Fourth step (S40), the color filter 320 to improve the brightness ratio with respect to the code 110 and the background 120 is provided in the imaging unit 310, to filter the emitted light emitted by the infrared ray sensitive tag 100 Can be performed.

The fourth step S40 may be performed by the imaging module 300 including a plurality of imaging units 310.

In addition, the fourth step S40 may be performed while the color filter 320 installed in each of the imaging units 310 passes only light having a predetermined wavelength.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is represented by the following claims, and it should be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalents are included in the scope of the present invention.

[Description of the code]

10: target 100: infrared ray sensitive tag

110: code 120: background

200: infrared light source 300: imaging module

310: imaging unit 320: color filter

400a, 400b: Position sensor 500: Server

Claims (22)

In the smart tag recognition system using the infrared sensitive code, An infrared sensitive tag attached to a recognition object and composed of a background and a code formed on the background; An infrared light source unit having a function of irradiating infrared rays onto a surface of the infrared sensitive tag; And An imaging unit which receives incident light from the infrared sensitive tag and recognizes the emitted light; It is made, including The code is a smart tag recognition system using an infrared sensitive code, characterized in that the absorbing infrared light is formed of a material that emits emitted light. The method according to claim 1, The imaging unit further comprises a color filter for filtering the emitted light emitted by the infrared sensitive tag to improve the brightness ratio between the code and the background, smart tag recognition system using an infrared sensitive code. The method according to claim 2, The color filter, smart tag recognition system using an infrared sensitive code, characterized in that only passing the light having a wavelength band of the emitted light emitted by the infrared sensitive tag. The method according to claim 1, The image pickup unit is a smart tag recognition system using an infrared ray sensitive code, characterized in that it further comprises a device that allows to recognize only the light in a specific wavelength band by itself by an algorithm. The method according to claim 1, The emission tag wavelength emitted by the infrared sensitive tag is a smart tag recognition system using an infrared sensitive code, characterized in that the wavelength of the visible light region. The method according to claim 1, The wavelength of the infrared rays irradiated by the infrared light source unit is smart tag recognition system using an infrared sensitive code, characterized in that more than 700 nanometers (nm). The method according to claim 6, The wavelength of the infrared rays irradiated by the infrared light source unit is smart tag recognition system using an infrared sensitive code, characterized in that 1400 to 1500 nanometers (nm). The method according to claim 1, The infrared light source unit, smart tag recognition system using an infrared sensitive code, characterized in that it has a function to adjust the wavelength of the light to be irradiated. The method according to claim 1, The infrared sensitive tag is a smart tag recognition system using an infrared sensitive code, characterized in that the form of the code formed is a bar code or a square code (QR code). The method according to claim 1, The background is a smart tag recognition system using an infrared sensitive code, characterized in that formed in a black color. The method according to claim 1, The background is smart tag recognition system, characterized in that the color is formed to be the same as the color of the code in the infrared unilluminated state. The method according to claim 1, And a position sensor for detecting a position or moving state of the recognition object to which the infrared ray sensitive tag is attached and transmitting a signal to drive the infrared light source unit. In the smart tag recognition processing system using the infrared sensitive code, An infrared sensitive tag attached to a recognition object and having a code formed of a material which absorbs infrared rays and emits emitted light; An infrared light source unit having a function of irradiating infrared rays onto a surface of the infrared sensitive tag; An imaging unit which receives incident light from the infrared sensitive tag and recognizes the emitted light; And A server having a function of processing information of the infrared sensitive tag recognized by the imaging unit, and storing or utilizing the processed information; Smart tag recognition processing system using an infrared sensitive code, characterized in that comprises a. In a smart tag recognition system using an infrared sensitive code that can process a multi-color code, An infrared sensitive tag attached to a recognition object and having a code formed of a material which absorbs infrared rays and emits emitted light; An infrared light source unit having a function of irradiating infrared rays onto a surface of the infrared sensitive tag; An imaging module including a plurality of imaging units configured to recognize incident light emitted from the infrared sensitive tag; And A color filter filtering the emitted light emitted by the infrared sensitive tag; It is made, including The color filter installed in each of the image pickup unit is a smart tag recognition system using an infrared sensitive code capable of processing a multi-color code, characterized in that only passing light having a predetermined wavelength. The method according to claim 14, And a position sensor for detecting a position or a movement state of the recognition object to which the infrared ray sensitive tag is attached and transmitting a signal to drive the infrared light source unit. Smart tag recognition system. The method according to claim 14, The smart tag using the infrared sensitive code processable to the multi-color code, characterized in that it further comprises a server for processing the information of the infrared sensitive tag recognized by the image pickup unit, and storing or utilizing the processed information. Recognition system. In the smart tag recognition method using an infrared sensitive code, i) attaching an infrared sensitive tag having a code formed of a material which absorbs infrared rays and emits emitted light to a recognition object; ii) detecting, by a position sensor, the position or movement state of the recognition object; iii) a signal is transmitted from the position sensor to the infrared light source unit, and the infrared light source unit irradiates an infrared ray sensitive tag to the infrared ray sensitive tag; And iv) the infrared sensitive tag irradiated with infrared rays emits emitted light and is recognized by the imaging unit; Smart tag recognition method using an infrared sensitive code, characterized in that comprises a. The method according to claim 17, Step i) is a smart tag recognition method using an infrared sensitive code, characterized in that the form of the code is printed by an inkjet printer using an ink containing a material that absorbs infrared rays and then emits emitted light. . The method according to claim 17, After the step iv), the method further comprises the step of processing the information of the infrared sensitive tag recognized by the image pickup unit, and storing or utilizing the processed information further smart tag recognition method using the infrared sensitive code. . The method according to claim 17, In the step iv), a color filter for improving the brightness ratio with respect to the code and the background is provided in the image pickup unit, and is performed while filtering the emitted light emitted by the infrared sensitive tag. Tag recognition method. The method according to claim 17, The step iv), smart tag recognition method using an infrared sensitive code, characterized in that performed by the imaging module having a plurality of the imaging unit. The method according to claim 21, In the step iv), the color filter installed in each of the image pickup units is performed while passing only light having a predetermined wavelength.

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