KR20220170216A - Smart glasses for preventing drowsiness and enhancing concentration - Google Patents

Abstract

The present invention relates to smart glasses. According to one aspect of the present invention, provided are the smart glasses implemented in glasses consisting of a frame of glasses fixing a lens and a pair of legs of glasses hinged to the frame of glasses. The smart glasses comprises: a first macro camera disposed on the left side of the frame of glasses and generating a left eye iris image; a second macro camera disposed on the right side of the frame of glasses and generating a right eye iris image; a power source disposed on either or both of the pair of legs of glasses; a stimulation module disposed on one of the pair of legs of glasses and applying stimulation to a user according to a stimulation application signal; a processor calculating iris luminance by using one or both of the left eye iris image and the right eye iris image; and a detachment detection sensor detecting wearing by the user and controlling the power source to supply driving power. The smart glasses according to an embodiment of the present invention can maintain the concentration of the user by measuring the state of the user and providing appropriate feedback according to the measured state.

Description

Smart glasses for preventing drowsiness and enhancing concentration}

The present invention relates to smart glasses.

Recently, reasonably priced smart glasses are being released to the market. Smart glasses are personal displays that support augmented reality as well as virtual reality. Smart glasses with a function of tracking the user's gaze while worn were also released. These smart glasses are not only expensive, but their applications are still limited.

Korean Patent Publication No. 10-2009-0092642

An object of the present invention is to provide smart glasses capable of maintaining the user's concentration by measuring the user's state and providing appropriate feedback according to the measured state.

According to one aspect of the present invention, there are provided smart glasses embodied in glasses composed of a spectacle frame fixing lenses and a pair of spectacle legs hinged to the spectacle frame frame. The smart glasses may be any one of a first macro camera disposed on the left side of the spectacle frame to generate an iris image for the left eye, a second macro camera disposed on the right side of the spectacle frame to generate an iris image for the right eye, and the pair of temples. A power source disposed on one or both, a stimulation module disposed on any one of the pair of temples and applying a stimulus to the user according to a stimulus application signal, and any one or both of the left eye iris image and the right eye iris image It may include a processor that calculates the luminance of the iris using the iris luminance and a detachable detection sensor that detects wearing by the user and controls the power source to supply driving power.

As an embodiment, a short-range communication module for transmitting the iris luminance to an external electronic device through short-range communication and receiving the stimulus-applying signal from the external electronic device, wherein the stimulus-applying signal corresponds to the iris luminance It may be generated when the amount is less than or equal to the reference luminance amount.

In one embodiment, the left eye iris image and the right eye iris image include a first iris image and a second iris image having different resolutions, wherein the first iris image has a relatively higher resolution than the second iris image , is transmitted to the external electronic device as it is, and the second iris image can be used to calculate the amount of iris luminance.

In an embodiment, the processor may compare the iris luminance with a reference luminance and generate the stimulus application signal when the iris luminance is less than or equal to the reference luminance.

In an embodiment, the processor may provide a driving clock in which a clock idle state is repeated to the first close-up camera and the second close-up camera.

In one embodiment, the first close-up camera and the second close-up camera may be rotatably coupled to the eyeglass frame.

In one embodiment, the stimulation module and the detachable detection sensor may be respectively disposed on the earring part of the pair of temples.

In one embodiment, the iris luminance may be the number of horizontal lines in which the number of pixels having luminance values representing the iris is greater than or equal to a reference value and continues in a horizontal direction.

According to another aspect of the present invention, there are provided smart glasses detachable to glasses composed of an eyeglass frame for fixing lenses and a pair of eyeglass legs hinged to the eyeglass frame. The smart glasses are detachably fixed to the left temple of the pair of temples, generate a left eye iris image with a rotatable first macro camera, and calculate a left eye iris luminance using the left eye iris image, A right eye iris image is generated with a first smart module that transmits the calculated left eye iris luminance to an external electronic device and a second close-up camera detachably fixed to the right temple of the pair of temples and rotatable, A second smart module for calculating right eye iris luminance using the right eye iris image and transmitting the calculated right eye iris luminance to an external electronic device, wherein the left eye iris luminance and the right eye iris luminance Any one or both of the luminance amounts are compared with the reference luminance amount, and if the luminance amount is less than or equal to the reference luminance amount, a stimulus applying signal is transmitted to the first smart module, and upon receiving the stimulus applying signal, the first smart module provides the user with a stimulus. can be authorized.

Smart glasses according to an embodiment of the present invention can maintain the user's concentration by measuring the user's state and providing appropriate feedback according to the measured state.

Hereinafter, the present invention will be described with reference to embodiments shown in the accompanying drawings. For ease of understanding, like reference numerals have been assigned to like elements throughout the accompanying drawings. The configurations shown in the accompanying drawings are only exemplary implementations to explain the present invention, and are not intended to limit the scope of the present invention thereto. In particular, in the accompanying drawings, in order to help understanding of the invention, some components are somewhat exaggerated. Since the drawings are means for understanding the invention, it should be understood that the width or thickness of components represented in the drawings may vary in actual implementation.
1 is a diagram exemplarily illustrating a principle of detecting a decrease in concentration of a user through iris recognition.
FIG. 2 exemplarily illustrates an embodiment of smart glasses for preventing drowsiness and enhancing concentration to which the principle illustrated in FIG. 1 is applied.
FIG. 3 is a view functionally illustrating the smart glasses for preventing drowsiness and enhancing concentration illustrated in FIG. 2 .
4 is a diagram illustrating an operation of smart glasses for preventing drowsiness and enhancing concentration by way of example.
5 is a diagram exemplarily illustrating another embodiment of smart glasses for preventing drowsiness and enhancing concentration to which the principle illustrated in FIG. 1 is applied.
6 is a view functionally illustrating the smart glasses for preventing drowsiness and enhancing concentration illustrated in FIG. 5 .

Since the present invention can have various changes and various embodiments, specific embodiments are illustrated in the drawings and will be described in detail through detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In particular, the functions, features, and embodiments described below with reference to the accompanying drawings may be implemented alone or in combination with other embodiments. Therefore, it should be noted that the scope of the present invention is not limited only to the forms shown in the accompanying drawings.

Meanwhile, among terms used in this specification, expressions such as “substantially”, “almost”, and “about” are expressions for considering margins applied in actual implementation or possible errors. For example, "substantially 90 degrees" should be interpreted as meaning including an angle at which the same effect as that of 90 degrees can be expected. As another example, “almost none” should be interpreted to include a negligible degree of negligible presence even if something is insignificant.

On the other hand, unless otherwise specified, "side" or "horizontal" refers to the left-right direction of the drawing, and "vertical" refers to the top-down direction of the drawing. In addition, unless otherwise specifically defined, angles, incident angles, etc. are based on a virtual straight line perpendicular to the horizontal plane shown in the drawings.

Like elements are referred to using like reference numbers throughout the drawings.

1 is a diagram exemplarily illustrating a principle of detecting a decrease in concentration of a user through iris recognition.

Users, especially students, spend a lot of time a day studying, such as classes or self-study. In order to increase the learning effect, it is desirable that a certain level of concentration or higher be maintained during the learning time. However, it is difficult to maintain concentration at a certain level or higher only through the user's efforts throughout the learning period. A similar situation occurs with drivers. If you get tired from driving for a long time, you may become drowsy driving without realizing it. Therefore, it is necessary to measure the user's concentration, evaluate it quantitatively, and give feedback to the user.

The user's concentration level may be determined by measuring the eyes in various ways.

First, the brightness of the light reflected by the iris (hereinafter referred to as iris luminance) varies according to the user's condition, so that it can be changed. When the concentration is above a certain level, the area of the iris may be maximized. On the other hand, when the user feels sleepy or tired, a portion of the iris starts to be covered by the eyelids, and as the degree increases, more areas are covered by the eyelids. It may be considered that concentration decreases as the user becomes sleepy or tired. Therefore, the iris luminance can be used as a criterion for measuring the user's concentration. For example, in the initial normal state (10a, 12a), the iris luminance generated by the user's iris is set to 100, and when the iris luminance is 30 to 60% of the normal state, the iris in the tired state (10b, 12b), iris If the luminance is 30% or less compared to normal, it can be classified as a drowsy state (10c, 12c).

Referring to FIG. 1 , iris luminance may be measured using, for example, a histogram method or a line count method. An image including an iris (hereinafter referred to as an iris image) may be generated by a camera. In the iris image, a pixel may be defined as a pixel component including a luminance (Y value), eg, YUV, or a pixel component convertible to a luminance value, eg, RGB. The iris image may be obtained by photographing any one or mode of the user's left eye and right eye. For example, when the luminance value is processed in 8 bits, a luminance value in the range of 256 to 200 can be set to the white of the eye, a luminance value in the range of 200 to 100 to the skin around the eye, and a luminance value below 100 to the iris. .

The histogram method uses the area of the dark region in the partial regions 10a, 10b, and 10c including the iris by using the luminance values of the pixels constituting the iris image. The histograms 11a, 11b, and 11c may be generated with luminance values of pixels of the entire iris image or the partial regions 10a, 10b, and 10c including the iris. In the histograms 11a, 11b, and 11c, the iris area is calculated using the number of pixels having a relatively dark luminance value. The calculated area of the iris may be proportional to the luminance of the iris.

The line count method uses the number of horizontal lines representing the iris. An iris line is a horizontal line in which a plurality of pixels having luminance values representing the iris are consecutive in a horizontal direction and the number of consecutive pixels is greater than or equal to a reference value. Here, the reference value may vary depending on the resolution of the iris image and the size of the iris displayed on the image. For example, in an iris image having a resolution of 640x480, an iris line may be defined as 10 or more horizontally continuous pixels. The first to third count values C ₁ , C ₂ , and C ₃ are the number of iris lines counted in the vertical direction, and may be proportional to the luminance of the iris.

Additionally, the user's concentration may be measured using iris movement in a specific situation. For example, in a situation of reading a book or writing, a user's gaze continuously changes. The change of gaze inevitably accompanies the movement of the iris. The movement of the iris can be detected from a positional change of the boundary between the iris and the white of the eye. For example, if a position at which a pixel having a luminance value representing the iris is first detected changes beyond a reference range, it may be determined that the iris has moved. When no movement of the iris is detected for a certain period of time, it may be determined that the concentration level is below a certain level.

FIG. 2 exemplarily illustrates an embodiment of smart glasses for preventing drowsiness and enhancing concentration to which the principle illustrated in FIG. 1 is applied.

Referring to FIG. 2 , smart glasses 100 include a spectacle frame 110 and temples 111 and 112 . A lens for correcting the user's eyesight is fixed to the spectacle frame 110 . The temples 111 and 112 are hinged to the left and right sides of the eyeglass frame frame 110, and support the eyeglass frame frame 110 together with a nose pad (not shown) in a state over the ears, so that the lens is positioned in front of the user's eyes Let it be.

Components for preventing drowsiness and enhancing concentration of the smart glasses 100 are distributed in the spectacle frame 110 and the temples 111 and 112. A close-up camera that captures the user's iris may be disposed on the spectacle frame 110 . Considering the distance between the eyeglass frame 110 and the eye when wearing glasses, the focal length of the macro camera may be about 0.5 cm to about 2 cm. In order to photograph the left and right eyes, respectively, the first macro camera 120 may be disposed around the left eye lens and the second macro camera 125 may be disposed around the right eye lens. In order not to obstruct the user's field of view, the first macro camera 120 is disposed close to the joint between the spectacle frame 110 and the left temple 111, and the second macro camera 125 is attached to the spectacle frame 110 It may be disposed close to the coupling portion between the and the right temple (112).

The close-up camera may be rotatably coupled to the spectacle frame 110 . The partially enlarged first close-up camera 120 is coupled to the first angle adjusting member 121, and the angle adjusting member 121 includes a groove or a through hole 130 formed on the left side of the spectacle frame 110; hereinafter referred to as a through hole. ) is at least partially accommodated. The first angle adjusting member 121 is rotatable in the horizontal direction inside the through hole 130 so that the user can adjust the field of view (FOV) of the first macro camera 120 .

Power required for the operation of the close-up cameras 120 and 125 and other components is supplied from the power sources 140 and 145 disposed on the temples 111 and 112 . Power sources 140 and 145 are rechargeable batteries and can be charged by cable or wirelessly.

The stimulation module 150 and the detachable sensor 155 may also be disposed on the temples 111 and 112 . Stimuli that can be generated by the stimulation module 150 may be any one of vibration, sound, light, and electricity. In order to effectively deliver the generated stimulation to the user, the stimulation module 150 may be disposed in an earring portion having a relatively larger contact area with the user's skin than other portions of the temple. Meanwhile, the detachable sensor 155 may detect whether the smart glasses are worn using pressure, light, or electricity. Similar to the stimulation module 150, it can be placed in the earring portion.

FIG. 3 is a view functionally illustrating the smart glasses for preventing drowsiness and enhancing concentration illustrated in FIG. 2 . Redundant description with FIG. 2 will be omitted.

Referring to FIG. 3 , the smart glasses 100 include a first close-up camera 120, a second close-up camera 125, power sources 140 and 145, a stimulation module 150, a detachable sensor 155, and short-range communication. It may include a module 160 and a processor 170 .

The first macro camera 120 and the second macro camera 125 generate a left eye iris image and a right eye iris image, respectively. The first close-up camera 120 and the second close-up camera 125 are disposed under a close-up lens having a focal length of about 0.5 to about 2.0 cm and below the close-up lens, and generate an iris image by receiving light in the visible light band. It may include a CMOS image sensor. The first close-up camera 120 and the second close-up camera 125 output an iris image composed of pixels represented by a plurality of pixel components, and the plurality of pixel components include luminance or can be converted into luminance.

Meanwhile, the first close-up camera 120 and the second close-up camera 125 generate 1 to 5 iris images (or frames) per second. Conventional image sensors can generate 25 to 30 frames per second, but this inevitably increases power consumption. In addition, the iris luminance does not change abruptly to the extent that it needs to be measured in units of several to several tens of ms, and this can be equally applied to iris motion detection. To this end, driving clocks provided to the CMOS image sensors of the first close-up camera 120 and the second close-up camera 125 may be supplied from the processor 170 . Assuming that the CMOS image sensor can output 25 frames per second, it takes about 40 ms per frame. Therefore, after the driving clock is supplied for 40 ms (clock activated state), the clock is in a dormant state until the next iris image is generated. During the clock sleep state, the driving clock is not output.

Also, the first close-up camera 120 and the second close-up camera 125 may generate a first iris image and a second iris image having two or more different resolutions. The resolution of the first iris image may be higher than that of the second iris image. The first iris image is generated once or twice immediately after wearing the smart glasses, and the second iris image may be generated throughout the wearing period.

The power sources 140 and 145 provide power necessary for driving the close-up cameras 120 and 125, the stimulation module 150, the detachable sensor 155, the short-range communication module 160, and the processor 170. Since it has a relatively large volume compared to other components, the power sources 140 and 145 can be distributedly disposed on the left and right temples 111 and 112.

The power sources 140 and 145 have many limitations compared to other components. In order not to cause discomfort when worn, the weight and size of the power sources 140 and 145 should be limited. However, it must be able to supply sufficient power during the time of use. On the other hand, power consumption should be kept to a minimum when not worn. In order to solve this limitation, the power sources 140 and 145 may independently supply power to the detachable detection sensor 155 and the rest of the components. The power supply wires of the power sources 140 and 145 include a first power line and a second power line. While the first power line constantly supplies power to the detachable detection sensor 155, the second power line includes a switch that is connected or opened according to the output of the detachable detection sensor 155. Therefore, the switch of the second power line is connected only while the attachment/detachment detection sensor 155 detects wearing and outputs a detection signal, so that power can be supplied to the rest of the components.

In response to the stimulus application signal, the stimulus module 150 applies the stimulus to the user. The stimulation module 150 may be variously selected according to the type of stimulation. In one embodiment, the stimulation module 150 may be a vibration generator that generates vibration to be applied to the user. In another embodiment, the stimulation module 150 may be a speaker that generates sound. In another embodiment, the stimulation module 150 may be an electrode that applies fine electricity to the user.

The attachment/detachment sensor 155 detects wearing and detachment of the smart glasses 100 and controls power supply necessary for driving the smart glasses 100. The detachable sensor 155 is, for example, a pressure sensor for detecting pressure applied when worn, an optical sensor for detecting light, a current sensor for detecting microcurrent generated from the human body, and a resistance sensor for measuring resistance of the human body. It can be any one. The attachment/detachment detection sensor 155 detects wearing and detachment by using a sensing value change due to contact with the user's skin. Therefore, the attachment/detachment detection sensor 155 may be disposed on a part of the earring that is easily in contact with the user's skin. The detection signal output by the detachable detection sensor 155 connects the switch of the second power line that supplies power to the close-up cameras 120 and 125, the stimulation module 150, the short-range communication module 160 and the processor 170. .

The short-range communication module 160 performs communication between the smart glasses 100 and an external electronic device, for example, a smart phone. The short-range communication module 160 may transmit detection data to an app installed in a user's smart phone using a communication method such as Bluetooth or ZigBee. The detection data may include any one or all of the iris luminance calculated using the first iris image, the second iris image, and the second iris image. The reason for transmitting the calculated iris luminance is to minimize power consumption. Meanwhile, the short-distance communication module 160 may receive control data from an app. The control data may include any one or both of a reference luminance amount for driving the stimulation module 150 and a stimulation application signal.

The processor 170 provides the macro cameras 120 and 125 with a driving clock in which the clock sleep state is repeated so that the first macro camera 120 can generate a first left eye iris image and a second left eye iris image, and a second macro camera ( 125) to generate a first right eye iris image and a second right eye iris image. To this end, the processor 170 may include an asynchronous clock generator. The processor 170 calculates the iris luminance using the second left eye and right eye iris images in the manner described with reference to FIG. 1 . For example, the processor 170 selects one of the second left eye iris image and the second right eye iris image to calculate the iris luminance, or calculates the iris luminance for both and then calculates an average thereof. can Additionally, the processor 170 may detect iris motion from the second iris image. Further, the processor 170 may compare the iris luminance of the second iris image with the reference luminance, and output a stimulus application signal for driving the stimulation module 150 when the iris luminance is equal to or less than the reference luminance. Meanwhile, the processor 170 may transmit detection data to an external electronic device through the short-range communication module 160 .

4 is a diagram illustrating an operation of smart glasses for preventing drowsiness and enhancing concentration by way of example. An embodiment in which the processor 170 drives the stimulation module 150 is first described with reference to FIG. 4 , and then an embodiment in which an external electronic device drives the stimulation module 150 will be described.

In S10, the detachable detection sensor 155 detects wearing of the smart glasses 100. Based on the output detection signal, power is supplied to the remaining components to drive the smart glasses 100 .

In S20 , the processor 170 provides the driving clock in which the clock activation state is maintained to the close-up cameras 120 and 125 to generate a first iris image. The processor 170 transmits the first iris image to an external electronic device through the short range communication module 160 . An app running on an external electronic device may analyze the first iris image to check the user's eye health. Eye health that the app can check may include eye congestion, glaucoma, cataract, and the like. Meanwhile, the app may check health conditions synchronized with eye health, such as heart rate, blood pressure, body temperature, etc., in conjunction with a wearable device such as a smart watch or smart band.

In S30 , the processor 170 provides a driving clock in which the clock idle state is repeated to the close-up cameras 120 and 125 to generate m (1≤m≤5) second iris images per second.

In S40 , the processor 170 calculates the iris luminance from the second iris image in the manner described with reference to FIG. 1 .

In S50, the processor 170 compares the calculated iris luminance with a reference luminance.

In S60, if the iris luminance amount is equal to or less than the reference luminance amount as a result of the comparison, the processor 170 generates a stimulus application signal and causes the stimulation module 150 to apply the stimulus to the user.

Meanwhile, the luminance comparison process may be performed in an external electronic device. In S40 , the processor 170 may calculate the iris luminance from the second iris image and transmit the calculated iris luminance to an external electronic device through the short range communication module 160 . In S50, the app compares the received iris luminance with the reference luminance. In S60, if the iris luminance amount is equal to or less than the reference luminance amount as a result of the comparison, the app transmits a stimulus application signal through the short range communication module 160 so that the stimulus module 150 applies the stimulus to the user.

5 is a diagram exemplarily illustrating another embodiment of smart glasses for preventing drowsiness and enhancing concentration to which the principle illustrated in FIG. 1 is applied. The same descriptions as the structures and functions described with reference to FIGS. 1 to 4 will be omitted, and differences will be mainly described.

Referring to FIG. 5 , smart glasses may be implemented in a detachable form to known glasses. The smart glasses 200 may include first and second smart modules 210 and 220 . The first smart module 210 is attached to the temple of the left eye and captures the iris of the left eye, and the second smart module 220 is attached to the temple of the right eye and captures the iris of the right eye. The first and second smart modules 210 and 220 may have symmetrical shapes and functions, and in particular, since only one smart module can measure a user's state and provide appropriate feedback according to the measured state, the first smart module will be described below. The smart module 210 will be mainly described.

The first smart module 210 may include a first module housing 211 and a first close-up camera 212 disposed on an upper portion of one side of the housing. Here, one side of the housing may be disposed close to the lenses of the glasses. The first close-up camera 212 may be coupled to the first angle adjusting member 213 rotatably coupled to the first module housing 210 .

Additionally, the first module housing 211 may further include a fixing member detachably fixed to the temples. The fixing member illustrated in FIG. 5 extends in the horizontal direction from the first module housing 211 and can also be applied to various types of fixing members such as hooks 214 and 215 bent downward, Velcro ties, clips, tongs, and the like. can

6 is a view functionally illustrating the smart glasses for preventing drowsiness and enhancing concentration illustrated in FIG. 5 .

The first smart module 210 may include a first close-up camera 212, a first processor 216, a first short-range communication module 217, a first stimulation module 218 and a first power supply 219. And, the second smart module 220 includes a second close-up camera 222, a second processor 226, a second short-range communication module 227, a second stimulation module 228, and a second power source 229. can do. Here, the second stimulation module 228 may be omitted.

The first processor 216 processes the iris image of the left eye captured by the first macro camera 212 to calculate the luminance of the iris of the left eye, and the second processor 226 calculates the luminance of the iris of the left eye, and the second processor 226 processes the iris image of the left eye captured by the second macro camera 222. The right eye iris luminance can be calculated by processing the iris image of . When the smart glasses 200 determine the stimulus application, either or both of the first processor 216 and the second processor 226 may apply the stimulus to the user. When an app running in the external electronic device 300 determines to apply the stimulus, the left eye iris luminance is externally transmitted through the first short range communication module 217 and the right eye iris luminance is externally transmitted through the second short range communication module 227. It may be transmitted to the electronic device 300.

Referring to the app running in the external electronic device 300 as an example, the user's concentration is displayed as a graph proportional to the iris luminance and displayed along a horizontal time axis. When an iris luminance amount 320 that is smaller than the reference luminance amount proportional to the reference concentration 310 is detected, the app sends a stimulus application signal to either or both of the first smart module 210 and the second smart module 220. can transmit

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. In particular, the features of the present invention described with reference to the drawings are not limited to the structures shown in the specific drawings, and may be implemented independently or in combination with other features.

The scope of the present invention is indicated by the following claims rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts thereof should be construed as being included in the scope of the present invention. .

Claims (9)

In smart glasses implemented in glasses composed of a spectacle frame for fixing lenses and a pair of temples hinged to the spectacle frame,
a first macro camera disposed on the left side of the spectacle frame to generate an iris image of the left eye;
a second macro camera disposed on the right side of the spectacle frame to generate an iris image of the right eye;
a power source disposed on one or both of the pair of temples;
a stimulation module disposed on one of the pair of temples and applying a stimulation to the user according to a stimulation application signal;
a processor calculating an iris luminance using either or both of the left eye iris image and the right eye iris image; and
Smart glasses including a detachable detection sensor that detects wearing by the user and controls the power source to supply driving power. The method according to claim 1, further comprising a short-range communication module for transmitting the iris luminance to an external electronic device through short-range communication and receiving the stimulus application signal from the external electronic device,
The stimulus application signal is generated when the iris luminance amount is less than or equal to the reference luminance amount, smart glasses. The method according to claim 2, wherein the left eye iris image and the right eye iris image include a first iris image and a second iris image having different resolutions,
The first iris image has a relatively higher resolution than the second iris image and is transmitted to the external electronic device as it is;
The second iris image is used to calculate the iris luminance amount, smart glasses. The smart glasses of claim 1 , wherein the processor compares the iris luminance with a reference luminance and generates the stimulus application signal when the iris luminance is less than or equal to the reference luminance. The smart glasses of claim 1 , wherein the processor provides a driving clock in which a clock sleep state is repeated to the first close-up camera and the second close-up camera. The smart glasses according to claim 1, wherein the first close-up camera and the second close-up camera are rotatably coupled to the spectacle frame. The smart glasses according to claim 1, wherein the stimulation module and the attachment/detachment detection sensor are respectively disposed on earring portions of the pair of temples. The smart glasses according to claim 1, wherein the iris luminance is the number of horizontal lines in which the number of pixels having luminance representing the iris is greater than or equal to a reference value and continues in a horizontal direction. In smart glasses detachable to glasses composed of a spectacle frame for fixing lenses and a pair of temples hinged to the spectacle frame,
A left eye iris image is generated by a first macro camera that is detachably fixed to the left temple of the pair of temples and is rotatable, and a left eye iris luminance is calculated using the left eye iris image, and the calculated left eye iris A first smart module that transmits the amount of luminance to an external electronic device; and
A right eye iris image is generated by a second close-up camera that is detachably fixed to the right temple of the pair of temples and is rotatable, right eye iris luminance is calculated using the right eye iris image, and the calculated right eye iris Including a second smart module for transmitting the amount of luminance to an external electronic device,
The external electronic device compares any one or both of the left eye iris luminance and the right eye iris luminance with a reference luminance, and transmits a stimulus application signal to the first smart module when the luminance is less than or equal to the reference luminance,
Upon receiving the stimulus application signal, the first smart module applies a stimulus to the user.

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