KR20230092753A - Smart watch for detecting biometric information based on sensing permittivity - Google Patents

Abstract

Disclosed are a smartwatch type biometric information detecting device for detecting biometric information based on dielectric constant sensing, and a biometric information detecting method using a smartwatch type device. According to one embodiment of the present invention, the smartwatch type biometric information detecting device, comprises: at least one processor; a dielectric constant sensor for measuring a signal reflected from an analyzed object existing in a body of a to-be-analyzed subject by radiating electromagnetic waves into the body of the to-be-analyzed subject in which a smartwatch is arranged, in accordance with control of the processor; a display for displaying the concentration of the analyzed object on the basis of the signal measured by the dielectric constant sensor in accordance with the control of the processor; and a communication unit for transmitting the concentration of the analyzed object to an external terminal in accordance with the control of the processor.

Description

Smart watch detecting biometric information based on dielectric constant sensing {SMART WATCH FOR DETECTING BIOMETRIC INFORMATION BASED ON SENSING PERMITTIVITY}

The following description relates to a smart watch type biometric information detection device that detects biometric information based on permittivity sensing and a biometric information detection method using the smart watch type device.

Cases of adult diseases such as diabetes, hyperlipidemia and thrombosis are continuously increasing. It is important to continuously monitor and manage these diseases, so they should be measured periodically using various biosensors. A common type of biosensor is a method in which blood taken from a finger is injected into a test strip and then the output signal is quantified using an electrochemical method or a photometric method. This approach causes a lot of pain to the user as blood draws are required every time.

For example, in order to manage diabetes, which hundreds of millions of people have worldwide, measuring blood sugar is the most basic. Therefore, a blood glucose measuring device is an indispensable and important diagnostic device for diabetic patients. Recently, various blood glucose measurement devices have been developed, but the most used method is a method of collecting blood by pricking a finger and directly measuring the concentration of glucose in the blood. In the case of using an invasive method, there is a method of measuring blood sugar by penetrating an invasive sensor into the skin, measuring it for a certain period of time, and then recognizing it in an external reader.

The information described above is for illustrative purposes only and may include material that does not form part of the prior art, and may not include what the prior art may suggest to those skilled in the art.

[Prior art document number]

Korean Registered Patent No. 10-2185556

A biometric information detection device in the form of a smart watch that detects biometric information based on permittivity sensing and a method for detecting biometric information using the device in the form of a smart watch are provided.

An apparatus for detecting biometric information in the form of a smart watch, comprising: at least one processor; a permittivity sensor for radiating electromagnetic waves into the body of an analysis target in which the smart watch is placed under the control of the at least one processor and measuring a signal reflected from an analyte present in the body of the analysis target; a display displaying the concentration of the analyte based on the measured signal under the control of the at least one processor; and a communication unit transmitting the concentration of the analyte to an external terminal under the control of the at least one processor.

According to one aspect, the concentration of the analyte may be calculated by the at least one processor based on a signal measured by the permittivity sensor.

According to another aspect, the biometric information detection device further includes at least one sensor of an optical sensor, a temperature sensor, an environment sensor, and a humidity sensor for measuring the concentration of the analyte, and by the at least one processor, the at least one It may be characterized in that the calculated concentration value of the analyte is calibrated based on an output from one sensor.

According to another aspect, the biometric information detection device includes a watch strap of the smart watch; and a leaky wave antenna formed on the watch strap, wherein the leaky wave antenna uses electromagnetic waves input from the permittivity sensor into the main body of the leaky wave antenna to obtain an analyte present in the body of the analysis target. It may be characterized by sensing information about.

According to another aspect, the direction of the electromagnetic wave emitted from the leaky wave antenna into the body of the analysis target is different according to the frequency of the electromagnetic wave input from the permittivity sensor into the main body of the leaky wave antenna. can be done with

According to another aspect, the path of the electromagnetic wave radiated from the leaky wave antenna into the body of the analysis target may be changed according to the permittivity of the body of the analysis target.

According to another aspect, the main body of the leaky wave antenna includes a plurality of transmission-side slots and a plurality of receiving-side slots formed on a surface surrounding at least a part of the body part of the analysis target, and the inside of the leaky wave antenna body The electromagnetic wave input to is radiated into the body of the analysis target through at least one of the plurality of transmission-side slots, and the frequency of the electromagnetic wave input through the body of the analysis target through at least one of the plurality of reception-side slots Based on this, it may be characterized in that information on the analyte present in the body of the analysis target is sensed.

According to another aspect, the dielectric constant of the body of the analysis target may be measured through the frequency of electromagnetic waves forming the strongest channel between a slot from which electromagnetic waves are emitted from the leaky wave antenna and a slot to which the electromagnetic waves are input. there is.

According to another aspect, the plurality of transmission-side slots and the plurality of reception-side slots are formed on the body of the leaky wave antenna in a direction perpendicular to a direction in which the body of the leaky wave antenna surrounds the body part. can

A biometric information detection method performed by a smart watch type biometric information detection device, wherein the biometric information detection device includes at least one processor, a permittivity sensor, a display, and a communication unit, and the biometric information detection method comprises: under the control of a processor of the dielectric constant sensor to radiate electromagnetic waves into the body of an analysis target in which the smart watch is disposed, and measuring a signal reflected from an analyte present in the body of the analysis target; calculating, by the at least one processor, the concentration of the analyte based on the signal measured by the permittivity sensor; displaying the calculated concentration of the analyte on the display according to the control of the at least one processor; and transmitting, by the communication unit, the calculated concentration of the analyte to an external terminal under the control of the at least one processor.

It is possible to provide a smart watch-type biometric information detection device that detects biometric information based on permittivity sensing and a biometric information detection method using the smart watch-type device.

1 is a graph showing an example of a relationship between a resonant frequency and blood sugar over time.
2 to 4 are diagrams illustrating an example of a smart watch-based device according to an embodiment of the present invention.
5 is a flowchart illustrating an example of a biometric information detection method according to an embodiment of the present invention.
6 is a diagram showing an example of a leaky wave antenna according to an embodiment of the present invention.
7 is a diagram illustrating an example in which a path of an electromagnetic wave is changed according to a permittivity according to an embodiment of the present invention.
8 is a diagram illustrating an example of the concept of a leaky wave antenna capable of adjusting a beam direction according to an embodiment of the present invention.
9 is a diagram illustrating an implementation example of a leaky wave antenna according to an embodiment of the present invention.
10 to 13 are graphs showing experimental results of a leaky wave antenna implemented according to an embodiment of the present invention.
14 is a diagram illustrating another implementation example of a leaky wave antenna according to an embodiment of the present invention.
15 is a diagram illustrating another implementation example of a leaky wave antenna according to an embodiment of the present invention.
16 is a diagram illustrating an example of a leaky wave antenna surrounding a body tissue according to an embodiment of the present invention.
17 is a graph showing changes in scattering parameters as permittivity of body tissue changes in one embodiment of the present invention.
18 and 19 are diagrams illustrating the structure and concept of a leaky wave antenna according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, various changes can be made to the embodiments, so the claims of the patent application are not limited or limited by these embodiments. It should be understood that all changes, equivalents, or alternatives to the embodiments are included in the scope of the claims.

Terms used in the examples are used only for descriptive purposes and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. don't

In addition, in the description with reference to the accompanying drawings, the same reference numerals are given to the same components regardless of reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element may be directly connected or connected to the other element, but there may be another element between the elements. It should be understood that may be "connected", "coupled" or "connected".

Components included in one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, descriptions described in one embodiment may be applied to other embodiments, and detailed descriptions will be omitted to the extent of overlap.

Embodiments of the present invention may provide a device based on a smart watch having a built-in permittivity sensor capable of measuring biometric information such as blood sugar level. Devices based on these smartwatches can integrate multiple sensors together for improved accuracy. As an example, smart watches are now part of daily life, and several functions for real-time health parameter measurement and analysis are integrated with smart watches. A permittivity-based sensor integrated into a smart watch can be used to measure and provide biometric information such as blood sugar level.

For example, when the blood glucose level changes, the permittivity of blood and interstitial fluid (ISF) also changes accordingly. This permittivity change can be detected using an electromagnetic sensor. Glucose information may be derived from one or more parameters (eg, reflection, transmission, magnitude and phase, delay, interruption, loss, etc.).

As a more specific example, a permittivity sensor that may be included in a smart watch-based device may measure biometric information associated with a target analyte. Hereinafter, a target analyte is a material related to a living body and may also be referred to as a biological material or an analyte. For reference, in the present specification, the target analyte is mainly described as blood glucose, but is not limited thereto. Biometric information is information related to a subject's biological components, and may include, for example, the concentration and level of an analyte. When the analyte is blood sugar, the biometric information may include a blood sugar level.

The permittivity sensor may measure biometric parameters (hereinafter referred to as 'parameters') related to the aforementioned biocomponents, and determine biometric information from the measured parameters. In this specification, the parameter may represent a circuit network parameter used to analyze the permittivity sensor, and below, for convenience of explanation, a scattering parameter will be mainly described as an example, but it is not limited thereto. As parameters, for example, admittance parameters, impedance parameters, hybrid parameters, transmission parameters, and the like may be used. For scattering parameters, transmission and reflection coefficients can be used. For reference, the resonant frequency calculated from the above-described scattering parameters may be related to the concentration of the target analyte, and the biosensor may predict blood glucose by detecting a change in a transmission coefficient and/or a reflection coefficient.

A permittivity sensor may include a resonator assembly (eg, an antenna). Hereinafter, an example in which the resonator assembly is an antenna will be mainly described. The resonant frequency of the antenna may be expressed as a capacitance component and an inductance component as shown in Equation 1 below.

[Equation 1]

에 비례할 수 있다.In Equation 1 described above, f may represent the resonant frequency of an antenna included in the permittivity sensor using electromagnetic waves, L may represent the inductance of the antenna, and C may represent the capacitance of the antenna. The capacitance C of the antenna is a relative dielectric constant as shown in Equation 2 below

can be proportional to

[Equation 2]

은 주변의 대상 피분석물의 농도에 의해 영향을 받을 수 있다. 예를 들어, 전자기파가 임의의 유전율을 가지는 물질을 통과하는 경우, 전파 반사 및 산란으로 인해 투과된 전자기파에서 진폭과 위상의 변화가 발생할 수 있다. 유전율 센서 주변에 존재하는 대상 피분석물의 농도에 따라 전자기파의 반사 정도 및/또는 산란 정도가 달라지므로, 상대 유전율

도 달라질 수 있다. 이는 안테나를 포함하는 유전율 센서에 의해 방사된 전자기파에 의한 주변 장(fringing field)로 인해, 유전율 센서와 대상 피분석물 간에 생체 커패시턴스가 형성되는 것으로 해석될 수 있다. 대상 피분석물의 농도 변화에 따라 안테나의 상대 유전율

이 변하므로, 안테나의 공진 주파수도 함께 변화한다. 다시 말해, 대상 피분석물의 농도는 공진 주파수에 대응할 수 있다.Relative Permittivity of the Antenna

may be influenced by the concentration of the analyte of interest in the surroundings. For example, when electromagnetic waves pass through a material having a certain permittivity, changes in amplitude and phase may occur in the transmitted electromagnetic waves due to reflection and scattering of radio waves. Since the degree of reflection and/or scattering of electromagnetic waves varies depending on the concentration of the target analyte present around the permittivity sensor, the relative permittivity

may also vary. This may be interpreted as a fact that a biocapacitance is formed between the dielectric constant sensor and the target analyte due to a fringing field caused by electromagnetic waves radiated by the dielectric constant sensor including the antenna. The relative permittivity of the antenna according to the change in the concentration of the target analyte

As this changes, the resonant frequency of the antenna also changes. In other words, the concentration of the analyte of interest may correspond to the resonant frequency.

According to an embodiment, the permittivity sensor may radiate electromagnetic waves while sweeping a frequency, and measure a scattering parameter according to the emitted electromagnetic waves. The permittivity sensor may determine a resonance frequency from the measured scattering parameters and estimate a blood glucose level corresponding to the determined resonance frequency. The permittivity sensor can be inserted into the subcutaneous layer and can predict blood glucose diffused from blood vessels into interstitial fluid.

The permittivity sensor may estimate biometric information by determining a degree of frequency shift of a resonance frequency. 1 is a graph showing an example of a relationship between a resonant frequency and blood sugar over time.

These permittivity sensors can be easily integrated with other sensors (eg optical sensors) and can operate without interfering with the other sensors. In addition, electromagnetic-based permittivity sensors require little power to operate, which is not a problem when considering battery-powered smart watches. In addition, the low electromagnetic power meets the Specific Absorption Rate (SAR) limits for human applications. Electromagnetic-based permittivity sensors may utilize one or more frequency bands having different penetration depths and detection coefficients, and depending on embodiments, several permittivity sensors may work together to improve measurement accuracy.

2 to 4 are diagrams illustrating an example of a smart watch type device according to an embodiment of the present invention. 2 is a transmission port (TX, 210) and a reception port (RX, 220) included in an electromagnetic-based permittivity sensor inside a biometric information detection device 200 implemented in the form of a smart watch, and for detecting other health indices. As an example of another sensor, an example in which the optical sensor 230 is disposed is shown.

The biometric information detection device 200 radiates electromagnetic waves from outside the body of the subject, for example, from the skin of a wrist or arm of a human body to the body of the subject, and detects a signal reflected from an analyte present in the body of the subject. By measuring, the analyte concentration can be determined. For example, electromagnetic waves emitted through the transmission port 210 of the biometric information detection device 200 may be reflected by the analyte, and the reflected signal may be received through the reception port 220 . At this time, when measuring blood sugar, the biometric information detection device 200 may measure biometric information such as blood sugar by radiating electromagnetic waves of a specific frequency and measuring a signal reflected from an analyte such as glucose in the body of the target. there is. 3 shows an example of penetration depth of the electromagnetic field (EM-Field).

The biometric information detection device 200 may be attached to or worn outside the body of the subject to be analyzed, and as shown in FIG. 4, the processor 410, the communication unit 420, the display 430, the dielectric constant sensor 440 and Other sensors 450 may be included. The processor 410 may control operations of the communication unit 420 , the display 430 , the permittivity sensor 440 , and other sensors 450 . The display 430 may display display information generated by the processor 410 based on information measured by the permittivity sensor 440 and/or other sensors 450 . The communication unit 420 may transmit information measured by the permittivity sensor 430 and/or other sensors 440 to the paired or preset terminal 450 . For example, the terminal 460 may be a separate device such as a smart phone, and the terminal 460 transmits information measured by the permittivity sensor 440 and/or other sensors 450 and transmitted through the communication unit 420. It can be displayed to a user and/or communicated to server 470 .

As shown in FIG. 2 , the permittivity sensor 440 may be formed inside the main body of the biometric information detection device 200 . In another embodiment, the permittivity sensor 440 may be formed using a watch strap included in the biometric information detection device 200 . An embodiment using the watch strap will be described in more detail later.

The other sensor 450 may be the optical sensor 230 previously described with reference to FIG. 2 , but may include one or more of various sensors such as an environmental sensor, a temperature sensor, and a humidity sensor according to embodiments. In this case, the output of the other sensor 450 may be used to calibrate the analyte concentration value measured by the permittivity sensor 440 .

5 is a flowchart illustrating an example of a biometric information detection method according to an embodiment of the present invention. The biometric information detection method according to this embodiment may be performed by the biometric information detection device 200 described above. Hereinafter, an example in which steps 510 to 550 included in the biometric information detection method are performed by components included in the biometric information detection apparatus 200 will be described.

In step 510, the permittivity sensor 440 radiates electromagnetic waves into the body of the analysis target where the smart watch is placed under the control of the processor 410 to measure the signal reflected from the analyte present in the body of the analysis target. there is. Depending on the embodiment, the permittivity sensor 440 may measure the permittivity using a leaky wave antenna to be described later.

In step 520, the processor 410 may calculate the concentration of the analyte based on the signal measured by the permittivity sensor 440.

In step 530, the processor 410 may calibrate the value of the concentration of the analyte calculated based on the output from the other sensor 450.

In step 540, the display 430 may display the concentration of the analyte calculated under the control of the processor 410. At this time, the concentration of the analyte displayed may include a value calibrated in step 530.

In step 550, the communication unit 420 may transmit the calculated concentration of the analyte to the external terminal 460 under the control of the processor 410. Depending on the embodiment, the processor 410 may transmit the signal measured by the permittivity sensor 440 to the external terminal 460 as it is. In this case, the concentration of the analyte may be calculated based on the signal measured by the permittivity sensor 440 in the terminal 460 .

6 is a diagram showing an example of a leaky wave antenna according to an embodiment of the present invention. The leaky-wave antenna 610 according to the embodiment of FIG. 6 can be implemented in the form of a watch strap included in the biometric information detection device 200, and is placed on the curved skin surface of the subject to be analyzed. A directional magnetic field can be radiated into the target's body.

In the permittivity sensor 440, a wave of electromagnetic waves may be input into the inside of the leaky wave antenna 610 formed by the first side 620 and the second side 630 of the leaky wave antenna 610 formed of a dielectric material. . In this case, the electromagnetic wave may pass through the inside of the leaky wave antenna 610 and be radiated to the outside of the leaky wave antenna 610 through a slot formed in the main body of the leaky wave antenna 610 . The body of the leaky wave antenna 610 includes a plurality of transmission-side slots (transmission-side (Tx) slots) and a plurality of reception-side slots (reception-side (Rx) slots) formed on the surface surrounding the body part of the analysis target. can include In this case, the direction in which the electromagnetic wave is radiated from the slot may vary according to the frequency of the electromagnetic wave. In the embodiment of FIG. 6 , four frequencies "f _c ", "f _c +Δf", "f _c +2Δf" and "f _c +3Δf" are selected through a specific slot 640 among a plurality of Tx slots. It shows an example in which electromagnetic waves are radiated in different directions for ".

In addition, the path of the electromagnetic wave may be changed according to the permittivity of the body. In this case, the same link may be formed between the transmission side (Tx) and the reception side (Rx) at the same permittivity. Here, the same link may mean that electromagnetic waves of the same frequency at the same permittivity always form the strongest channel between the transmitting side (Tx) and the receiving side (Rx). In this case, by designing the leaky wave antenna 610 so that the beam direction of the electromagnetic wave is different for each frequency, the permittivity can be measured through the frequency of the electromagnetic wave forming the strongest channel between the transmission side (Tx) and the reception side (Rx). there is. As described above, in the case of measuring the permittivity of the body, biometric information of the body can be obtained based on the measured permittivity.

7 is a diagram showing an example in which the path of an electromagnetic wave is changed according to the permittivity according to an embodiment of the present invention, and FIG. 8 is a leaky wave antenna capable of adjusting a beam direction according to an embodiment of the present invention. It is a drawing showing an example of the concept. FIG. 7 shows an example in which a beam of electromagnetic waves emitted in a specific direction through the biosensor 710 disposed on the skin is routed according to the permittivity and reaches the external receiving antenna 720 . At this time, since the resonance frequency is affected by the dielectric constant of the material, the external receiving antenna 720 may be used as a biochemical sensor. As an example, the external receiving antenna 720 of FIG. 7 may obtain a biosensor result through a scattering parameter S ₂₁ result. At this time, FIG. 8 shows that the angle of a beam steered into the body of the analysis target can be controlled using the leaky wave antenna 810 . At this time, since the leaky wave antenna 810 can adjust the beam direction according to the frequency with one port, cost can be saved.

9 is a diagram showing an implementation example of a leaky wave antenna according to an embodiment of the present invention, and FIGS. 10 to 13 are graphs showing test results of a leaky wave antenna implemented according to an embodiment of the present invention. . The graph of FIG. 10 shows the scattering parameter according to frequency, the graph of FIG. 11 shows the radiation efficiency according to frequency, the graph of FIG. 12 shows the realized gain (loss) according to theta wave, and FIG. 13 shows the beam per frequency. The directions in which these are formed are shown, respectively. 13 shows that a beam emitted according to a frequency may have directionality. The leaky wave antenna according to the present embodiment includes a transverse slot, and radiation efficiency of 0.9 or more at 10 GHz can be radiated to the outside of the leaky wave antenna through the slot.

14 is a diagram illustrating another implementation example of a leaky wave antenna according to an embodiment of the present invention. To achieve high gain and narrower beam width, L ₀ can be set larger. In addition, by applying a taper slot and a substrate integrated waveguide (SIW) at both ends, the bandwidth can be improved through excellent return loss S ₁₁ .

15 is a diagram illustrating another implementation example of a leaky wave antenna according to an embodiment of the present invention. The leaky wave antenna 1500 according to the present embodiment may include an antenna body 1510 formed to surround at least a part of the body part of the analysis target. At this time, the antenna body 1510 may include a plurality of transmission-side slots and a plurality of reception-side slots formed on a surface surrounding the body part. The first dotted line box 1520 may indicate a plurality of transmission-side slots, and the second dotted-line box 1530 may indicate a plurality of reception-side slots. In the plurality of transmission-side slots or the plurality of reception-side slots, the lengths of a (a is a natural number) number of slots in the middle are the same, and the lengths of b (b is a natural number) number of slots on the left side are relatively longer. and the lengths of c (c is a natural number) number of slots on the right side may be formed to be relatively smaller as they are located on the right side. In this case, the number of the plurality of transmission-side slots or the plurality of reception-side slots may be determined as a + b + c. Meanwhile, the leaky wave antenna 1500 according to the present embodiment can radiate most of the power to the outside of the leaky wave antenna 1500 when the scattering parameters S ₁₁ and S ₂₁ are less than -10 dB.

16 is a diagram showing an example of a leaky wave antenna surrounding a body tissue according to an embodiment of the present invention, and FIG. 17 illustrates a change in scattering parameters as the permittivity of body tissue changes according to an embodiment of the present invention. is the graph shown.

18 and 19 are diagrams illustrating the structure and concept of a leaky wave antenna according to an embodiment of the present invention. A leaky wave antenna based on the traveling wave concept has a simple structure and can perform beam steering capability according to frequency with high directivity. When slots are arranged along the waveguide structure, waves can be radiated through the slots in a fast wave mode (leakwave mode).

As such, the leaky wave antenna described with reference to FIGS. 6 to 19 can be implemented in the form of a watch strap included in the biometric information detection device 200, and the permittivity sensor 440 transmits electromagnetic waves into the leaky wave antenna formed of a dielectric material. A wave of can enter. In this case, the permittivity can be measured through the frequency of the electromagnetic wave forming the strongest channel between the transmission side (Tx) and the reception side (Rx) of the leaky wave antenna, and biometric information within the body can be obtained based on the measured permittivity. there is.

As such, according to embodiments of the present invention, a smart watch-type biometric information detection device that detects biometric information based on permittivity sensing and a biometric information detection method using the smart watch-type device can be provided.

The system or device described above may be implemented as a hardware component or a combination of hardware components and software components. For example, devices and components described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA) , a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions. The processing device may run an operating system (OS) and one or more software applications running on the operating system. A processing device may also access, store, manipulate, process, and generate data in response to execution of software. For convenience of understanding, there are cases in which one processing device is used, but those skilled in the art will understand that the processing device includes a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that it can include. For example, a processing device may include a plurality of processors or a processor and a controller. Other processing configurations are also possible, such as parallel processors.

Software may include a computer program, code, instructions, or a combination of one or more of the foregoing, which configures a processing device to operate as desired or processes independently or collectively. You can command the device. Software and/or data may be any tangible machine, component, physical device, virtual equipment, computer storage medium or device, intended to be interpreted by or provide instructions or data to a processing device. can be embodied in The software may be distributed on networked computer systems and stored or executed in a distributed manner. Software and data may be stored on one or more computer readable media.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The medium may continuously store programs executable by a computer or temporarily store them for execution or download. In addition, the medium may be various recording means or storage means in the form of a single or combined hardware, but is not limited to a medium directly connected to a certain computer system, and may be distributed on a network. Examples of the medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical recording media such as CD-ROM and DVD, magneto-optical media such as floptical disks, and ROM, RAM, flash memory, etc. configured to store program instructions. In addition, examples of other media include recording media or storage media managed by an app store that distributes applications, a site that supplies or distributes various other software, and a server. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler.

As described above, although the embodiments have been described with limited examples and drawings, those skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in an order different from the method described, and/or components of the described system, structure, device, circuit, etc. may be combined or combined in a different form than the method described, or other components may be used. Or even if it is replaced or substituted by equivalents, appropriate results can be achieved.

Therefore, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

Claims (10)

In the biometric information detection device in the form of a smart watch,
at least one processor;
a permittivity sensor for radiating electromagnetic waves into the body of an analysis target in which the smart watch is placed under the control of the at least one processor and measuring a signal reflected from an analyte present in the body of the analysis target;
a display displaying the concentration of the analyte based on the measured signal under the control of the at least one processor; and
A communication unit for transmitting the concentration of the analyte to an external terminal under the control of the at least one processor.
Biometric information detection device comprising a. According to claim 1,
by the at least one processor,
Calculating the concentration of the analyte based on the signal measured by the permittivity sensor
Biometric information detection device characterized in that. According to claim 2,
At least one sensor of an optical sensor, a temperature sensor, an environmental sensor, and a humidity sensor for measuring the concentration of the analyte
Including more,
by the at least one processor,
Calibrating the value of the calculated analyte concentration based on the output from the at least one sensor.
Biometric information detection device characterized in that. According to claim 1,
a watch strap of the smart watch; and
A leaky wave antenna formed on the watch strap
Including more,
The leaky wave antenna,
Sensing information on an analyte present in the body of the analysis target using electromagnetic waves input from the permittivity sensor into the body of the leaky wave antenna
Biometric information detection device characterized in that. According to claim 4,
The electromagnetic wave radiated from the leaky wave antenna into the body of the analysis target has a different direction of the radiated beam according to the frequency of the electromagnetic wave input from the permittivity sensor into the body of the leaky wave antenna.
Biometric information detection device characterized in that. According to claim 4,
The electromagnetic wave radiated from the leaky wave antenna into the body of the analysis target is changed in path according to the permittivity of the body of the analysis target
Biometric information detection device characterized in that. According to claim 4,
The main body of the leaky wave antenna includes a plurality of transmission-side slots and a plurality of reception-side slots formed on a surface surrounding at least a part of the body part of the analysis target,
Electromagnetic waves input into the body of the leaky wave antenna are radiated into the body of the analysis target through at least one of the plurality of transmission-side slots,
Sensing information about an analyte present in the body of the analysis target based on a frequency of an electromagnetic wave input through at least one of the plurality of receiving slots through the body of the analysis target
Biometric information detection device characterized in that. According to claim 7,
Measuring the dielectric constant of the body of the analysis target through the frequency of the electromagnetic wave forming the strongest channel between the slot from which the electromagnetic wave is radiated from the leaky wave antenna and the slot into which the electromagnetic wave is input
Biometric information detection device characterized in that. According to claim 7,
The plurality of transmission-side slots and the plurality of reception-side slots are formed on the body of the leaky wave antenna in a direction perpendicular to a direction in which the body of the leaky wave antenna surrounds the body part.
Biometric information detection device characterized in that. In the biometric information detection method performed by a smart watch type biometric information detection device,
The biometric information detection device includes at least one processor, a permittivity sensor, a display, and a communication unit,
The biometric information detection method,
Under the control of the at least one processor, the permittivity sensor radiates electromagnetic waves into the body of an analysis target in which the smart watch is disposed, and measures a signal reflected from an analyte present in the body of the analysis target;
calculating, by the at least one processor, the concentration of the analyte based on the signal measured by the permittivity sensor;
displaying the calculated concentration of the analyte on the display according to the control of the at least one processor; and
Transmitting, by the communication unit, the calculated concentration of the analyte to an external terminal under the control of the at least one processor.
Biometric information detection method comprising a.

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