KR20090038647A - High blood sugar level alrarm device - Google Patents

Abstract

A high blood sugar level alarm device is provided to alarm a high blood sugar condition of a patient by using the electrical characteristic change of the blood by the glucose density. A high blood sugar level alarm device includes a blood sugar sensor unit(200), an oscillator(120), a power supply unit(110), an alarm unit(10), and a matching circuit. The impedance of the blood sugar sensor unit is changed according to the blood sugar state of a user. When the impedance of the blood sensor unit is changed to a predetermined range, the oscillator transmits the alarm electric wave of a specific frequency band to the outside through an antenna. The power supply unit supplies the driving power to the oscillator. The alarm unit receives the alarm electric wave and alarms the high blood sugar level of the user by at least one of the light, the sound, the vibration and the electric wave. The matching circuit matches the impedance of the blood sugar sensor unit with the alarm electric wave oscillation impedance of the oscillator.

Description

High blood sugar alarm device {HIGH BLOOD SUGAR LEVEL ALRARM DEVICE}

The present invention relates to a hyperglycemic alarm device, and more particularly, by using a change in the electrical properties of the blood due to the glucose concentration to enable the alarm of the patient's hyperglycemia in a simple configuration, it can be implemented at a low price and easy to use It relates to an easy hyperglycemic alarm device.

In general, a diabetic patient is shocked if the blood sugar in the blood increases above a certain level, it is very important to maintain the blood sugar level within a stable range. Therefore, the diabetic patient should visit the hospital every certain period in order to measure their blood sugar and measure the blood sugar directly, or check the blood sugar directly through a portable blood glucose meter.

The conventional portable blood glucose meter is to check the blood glucose level through a chemical reaction by taking the blood of the patient. By the way, the conventional method is not only cumbersome, but also has to collect blood every time the blood sugar is measured, there is a problem that if the wrong contaminated with germs cause side effects.

Therefore, recently, a technology for detecting blood glucose levels through a sensor attached to a human body without blood collection has been developed. This technology uses a change in the electrical characteristics of the human body according to the blood glucose change, transmits a radio wave to the patient's human body and detects the reflected wave reflected by the sensor, measures the reflection coefficient which is the ratio of the reflected wave, and uses the measured reflection coefficient The blood glucose level is detected by calculating the permittivity or conductivity of the blood.

However, a blood glucose measurement technique using radio waves has a complicated configuration such as a signal generator for measuring a reflected wave or dielectric constant value, a circuit analyzer, and a signal processing and control device for processing measured data. As the components increase as described above, there is a problem that the production cost increases and the implementation of a small portable measuring device is not easy.

Accordingly, the technical problem to be solved by the present invention is to provide a high blood sugar alarm device that can be implemented at a low price and easy to use by enabling a high blood sugar state of a patient to be alarmed with a simple configuration.

In order to solve the above problems, the present invention provides a blood sugar sensor unit having an impedance variable according to a blood sugar state of a user when the user contacts the human body; An oscillator for transmitting an alarm signal of a specific frequency band to the outside through an antenna when the impedance of the blood sugar sensor is adjusted to a predetermined range; It provides a high blood sugar alarm device comprising a power supply for supplying driving power to the oscillation unit.

Here, it is possible to further include an alarm unit for receiving the alarm wave to alert the high blood sugar state of the user using at least one of light, sound, vibration, radio waves.

The blood sugar sensor unit includes a plate-like dielectric; At least one surface of the dielectric shields the dielectric so as to be open, and a metal shield formed with an exposed portion to allow a user's body contact with a predetermined region of the shielded area; It is possible to include a strip line provided on the open side of the dielectric and connected to the oscillation portion.

Alternatively, the blood sugar sensor unit, a plate-like dielectric; At least one surface of the dielectric shields the dielectric so as to be open, and a metal shield formed with an exposed portion to allow a user's body contact with a predetermined region of the shielded area; A strip line provided on an open surface of the dielectric and connected to the oscillation part; It is possible to include via holes penetrating the exposed portion and the strip line.

The blood glucose sensor unit may include a plate-like dielectric; At least one surface of the dielectric shields the dielectric so as to be open, and a metal shield formed with an exposed portion to allow a user's body contact with a predetermined region of the shielded area; A strip line provided on an open surface of the dielectric and connected to the oscillation part; A coplanar waveguide (CPW) formed in the dielectric region exposed through the exposed portion; It is possible to include a metal via hole through the CPW and the strip line.

The oscillator may include a transistor configured to oscillate a specific frequency signal when the impedance connected to the gate is adjusted to a predetermined range.

On the other hand, the task, the blood sugar sensor unit that impedance varies according to the user's blood sugar state when in contact with the user's body; An alarm unit for generating a high blood sugar alarm when the impedance of the blood glucose sensor unit is adjusted to a predetermined range; It can also be solved by the hyperglycemic alarm device comprising a matching circuit for matching the impedance of the blood glucose sensor unit changed by the human body contact with the high blood sugar alarm generation impedance of the alarm unit.

Here, the alarm unit may further include an alarm unit that alerts a high blood sugar state of the user using at least one of light, sound, vibration, and radio waves.

According to the present invention, by using a change in the electrical properties of the blood due to the glucose concentration it is possible to alert the high blood sugar state of the patient in a simple configuration, it can be implemented at a low price and can be easily used by the user.

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

However, embodiments of the present invention illustrated below may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. Embodiments of the invention are provided to more fully illustrate the invention to those skilled in the art.

1 is a control block diagram of a hyperglycemic alarm apparatus according to an embodiment of the present invention. As shown in FIG. 1, the hyperglycemic alarm device of the present invention includes a portable blood sugar detecting unit 100 which is provided to be portable and detects a change in the blood glucose level of a user and transmits an alarm signal when the blood sugar level is higher than a reference concentration; It includes an alarm unit 10 for receiving an alarm radio wave from the portable blood sugar detection unit 100 to warn of a high blood sugar state.

The alarm unit 10 includes a receiver 12 for receiving alarm radio waves from the portable blood sugar detecting unit 100 and an alarm unit 14 for hyperglycemic state alarm.

The receiver 12 wirelessly receives an alarm radio wave of a specific frequency transmitted by the portable blood sugar detecting unit 100.

The alarm unit 14 may alarm a high blood sugar state of the user by using various means such as light, sound, vibration, and radio wave, such as lighting an alarm light or transmitting an alarm message when an alarm radio wave is received. The alarm unit 10 may be a medical system provided in a hospital or a home. In addition, the alarm unit 10 may be provided in a portable form so that the user can easily check the blood sugar detection result.

The portable blood sugar detecting unit 100 includes a power supply unit 110 for supplying driving power to the oscillation unit, a blood sugar sensor unit 200 having an impedance variable according to a user's blood sugar state when the user contacts the human body, and a blood sugar sensor unit. When the impedance of 200 is adjusted to a predetermined range, the oscillator 120 generates an alarm wave of a predetermined frequency band and transmits the signal through an antenna.

The blood glucose sensor unit 200 varies in impedance according to electrical characteristics of a material located on a contact surface. Thus, when the user's human body is in contact with each other, the impedance of the blood sugar sensor 200 has different values according to the user's blood sugar level. Here, the blood of the human body has different dielectric constants and conductivity due to the change in electrical characteristics according to the blood sugar level. Thus, when the human body is in contact with the blood sugar sensor unit 200 has different dielectric characteristics according to the blood sugar level of the human body, the impedance of the blood sugar sensor unit 200 is changed.

The oscillator 120 is designed based on the impedance of the blood sugar sensor 200, and is designed to oscillate high power only when the impedance of the blood sugar sensor 200 in contact with the human body has an impedance value in contact with the high blood sugar human body. The oscillator 120 can be simply configured using a transistor. When the oscillator 120 is configured using one transistor, the blood glucose sensor 200 is connected to a gate, and the output signal changes according to the impedance change of the blood glucose sensor 200. Therefore, the oscillator 120 is designed to match hardware characteristics based on a simulation result of a database of the blood glucose level and the impedance of the blood sugar sensor 200 through the measurement of the network analyzer and an output signal change thereof. Accordingly, the portable blood sugar detecting unit 100 may be simply configured without an active circuit and a central processing unit for blood glucose measurement.

By such a configuration, when the impedance value of the blood sugar sensor 200 in contact with the user's body has a value of high blood sugar, the oscillator 120 transmits an alarm radio wave through an antenna of an output terminal, such that the alarm unit is connected wirelessly. (10) may, for example, deliver a hyperglycemic alert to a medical system.

Meanwhile, in the above description, only the alarm device using the oscillator 120 is shown, but as an alarm method of the alarm device, light, sound, vibration, radio waves, etc. can be used in various ways. In addition, it is possible to mount the alarm device on the portable blood sugar detection unit 100 itself so that the high blood sugar alarm can be checked even without a separate alarm unit 10.

In the above description, the blood glucose sensor unit 200 is designed to have a structure in which the impedance changes according to the electrical characteristics of the material located on the contact surface, and therefore, the impedance changes according to the blood sugar level of the contacted user. 2 to 4 illustrate the structure of a blood glucose sensor according to an exemplary embodiment of the present invention.

2 is a structural diagram of a blood sugar sensor according to a first embodiment of the present invention.

As shown in FIG. 2, the blood sugar sensor 200 shields the dielectric 210 so that the plate-like dielectric 210 and at least one side of the dielectric 210 are opened and exposes a predetermined region of the shielded region. The metal shield 220 having the exposed portion 230 is formed, and the strip line 250 provided on the open surface of the dielectric 210.

The dielectric 210 is made of an insulating material such as a low loss ceramic in which electric charge does not flow and an electric charge is induced on a surface thereof, and may be provided in a planar shape to facilitate human contact.

The metal shield 220 shields the front and both sides of the dielectric 210, and an exposed portion 230 through which the dielectric 210 is exposed is formed in a predetermined region of the front surface. Thus, a user who wants to check blood sugar contacts the body part with the exposed part 230.

The strip line 250 is disposed in parallel with the exposed portion 230 in the region of the dielectric 210 that is not shielded by the metal shield 220.

By such a configuration, the blood sugar sensor 200 has a specific electrical characteristic, and the impedance changes when the user contacts the human body with the exposure unit 230. Here, the blood sugar sensor 200 has a different dielectric constant depending on the blood sugar level of the user in contact, and the impedance of the blood sugar sensor 200 has a different value according to the blood sugar level of the user due to the change in the dielectric constant. . Thus, the oscillator 120 connected to the blood sugar sensor 200 may alert the high blood sugar state by oscillating an alarm when the impedance is changed to the impedance of the high blood sugar state.

3 is a structural diagram of a blood glucose sensor 200 according to a second embodiment of the present invention, and suggests a structure that may be more sensitive to the blood glucose level of a contacted user than the blood sugar sensor 200 of FIG. 2. It is.

 As shown in FIG. 3, the blood sugar sensor 200 shields the dielectric 310 so that the plate-like dielectric 310 and at least one surface of the dielectric 310 are opened and exposes a predetermined region of the shielded region. The dielectric exposed through the metal shield 320 having the exposed portion 330, the strip line 350 provided on the open surface of the dielectric 310, and the exposed portion 330 of the metal shield 320. Metal via hole 340 penetrating region 310 and strip line 350.

The dielectric 310 is made of an insulating material such as a low loss ceramic in which electric charge does not flow and an electric charge is induced on a surface thereof, and may be provided in a planar shape to facilitate human body contact.

The metal shield 320 shields the front and both side surfaces of the dielectric 310 and an exposed portion 330 through which the dielectric 310 is exposed is formed in a predetermined region of the front surface. Thus, the user who wants to check the blood sugar contacts the body part to the exposed part 330.

The strip line 350 is disposed in parallel with the exposed portion 330 in the region of the dielectric 310 which is not shielded by the metal shield 320.

The metal via hole 340 is formed to penetrate the exposed portion 330 provided on the front surface and the strip line 350 provided on the rear surface. The impedance of the blood sugar sensor 200 by the metal via hole 340 prepared as described above may be more sensitively reacted according to the permittivity of the human body in contact with the exposed part 330, thereby sensitively detecting the high blood sugar state of the human body.

By such a configuration, the impedance of the blood sugar sensor 200 is changed according to the blood glucose level of the human body in contact with the exposed portion 330, so that the whole of the oscillation unit 120 connected to the blood sugar sensor 200 and the blood sugar sensor 200 is changed. The impedance changes, and the oscillator 120 may oscillate the alarm when the impedance is changed to the impedance of the high blood sugar state.

4 is a structural diagram of a blood glucose sensor 200 according to a third embodiment of the present invention, and illustrates a structure capable of sensitively responding to a user's blood sugar level.

As shown in FIG. 4, the blood sugar sensor 200 shields the dielectric 410 such that the plate-like dielectric 410 and at least one side of the dielectric 410 are opened, and exposes a predetermined region of the shielded region. The dielectric exposed through the metal shield 420 having the exposed portion 430, the strip line 450 provided on the open surface of the dielectric 410, and the exposed portion 430 of the metal shield 420. A coplanar waveguide (CPW) 460 provided in the region 410 and a metal via hole 440 penetrating through the CPW 460 and the strip line 450 are included.

The dielectric 410 is made of an insulating material such as a low loss ceramic in which electric charge does not flow and an electric charge is induced on a surface thereof, and may be provided in a planar shape to facilitate human contact.

The metal shield 420 shields the front and both sides of the dielectric 410, and an exposed portion 430 is formed in a predetermined region of the front surface to expose the dielectric 410. Thus, a user who wants to check blood sugar contacts the body part with the exposed part 430.

The strip line 450 is disposed in parallel with the exposed portion 430 in the region of the dielectric 410 that is not shielded by the metal shield 420.

The CPW 460 is a type of transmission line used in a mode indicated by electromagnetic waves transmitted through a free space or a two-wire coaxial line. Therefore, the transmission characteristics are better than that of the microstrip, and the effective dielectric constant is stabilized.

By such a configuration, the impedance is sensitively and stably changed according to the blood glucose level of the human body in contact with the exposed portion 430, thereby enabling a more precise high blood sugar state check.

Meanwhile, in the above description, the blood glucose sensor unit 200 having the cut coaxial line in a flat shape is illustrated, but of course, the blood glucose sensor unit 200 having another structure whose impedance changes according to the blood sugar level of the user is also applied. It is possible.

5 is a Smith chart showing the impedance of a blood glucose sensor according to an embodiment of the present invention.

The impedance change indicated by the dotted line in the Smith chart of FIG. 5 is when the saline solution having a glucose concentration of 0% is contacted, and the impedance change indicated by the solid line shows the case where the saline solution having a glucose concentration of 20% is contacted. As can be seen from the simulation result of FIG. 5, when the glucose concentration is 20%, that is, when the blood glucose concentration is in the hyperglycemic state, the impedance enters the operation section of the oscillator 120. Therefore, even if the blood sugar is not high even if the human body oscillation unit 120 does not transmit the alarm radio waves, only when the human body in a high blood sugar state to transmit the alarm radio waves.

Figure 6 is a graph of the output simulation results according to the blood glucose concentration of the high blood sugar alarm device of the present invention.

As shown in FIG. 6, the oscillator 120 does not oscillate when contacting the saline solution having a glucose concentration of 0%, and when the glucose concentration is 20%, that is, when the blood glucose level is in a high blood sugar state. It becomes a rash. In the above, as shown in the Smith chart of Figure 5, when the hyperglycemic state, the impedance of the blood sugar sensor 200 enters the oscillation unit 120 operation section, the oscillation unit 120 is oscillated and the alarm wave through the antenna Will radiate to the outside.

On the other hand, according to the RF structure of the blood glucose sensor 200, the impedance change according to the blood glucose amount may not be large enough. In this case, it is possible to add an impedance matching circuit to increase the change in impedance.

7 is a control block diagram of a hyperglycemic alarm apparatus according to another embodiment of the present invention. As shown in FIG. 7, the hyperglycemic alarm device includes a power supply unit 510 for supplying driving power, a blood sugar sensor unit 520 having an impedance varying according to a blood sugar state of a user when the user contacts a human body, and a blood sugar An oscillator 540 for generating an alarm wave of a specific frequency band in which the impedance of the sensor unit 520 is adjusted to an impedance range of a high blood sugar state and transmitting it through an antenna, and a connection line between the blood glucose sensor unit 520 and the oscillator 540. An impedance matching circuit 530 interposed therebetween to match the alarm wave transmission impedance of the oscillator 540 is included.

The blood glucose sensor unit 520 varies in impedance depending on the electrical properties of the material located on the contact surface. In addition, the electrical characteristics of the user's human body, for example, the dielectric constant changes according to the blood glucose level. Thus, when the user's human body contacts the blood sugar sensor unit 520, the impedance of the blood sugar sensor unit 520 may have different values according to the blood sugar level of the user.

The oscillator 540 is designed based on the impedance of the blood sugar sensor 520 and is designed to oscillate high power only when the impedance of the blood sugar sensor 520 in contact with the human body has a high blood sugar value.

The impedance matching circuit 530 matches the impedance of the blood sugar sensor unit 520 changed by the high blood sugar human body contact with the alarm propagation oscillation impedance of the oscillator 540. When the impedance matching circuit 530 is added, the subtle impedance change of the blood glucose sensor 520 may be amplified by the impedance matching circuit 530 so that the oscillator 540 reacts precisely. The impedance matching circuit 530 may be configured such that hardware characteristics are matched based on pre-simulated result values when designing the blood glucose sensor unit 520 and the oscillator 540. The impedance matching circuit 530 may be configured in the form of a strip line in order to minimize the influence of the user's body contact.

8 is an output simulation result graph of the hyperglycemic alarm device of the present invention, and shows an output change according to the addition of the impedance matching circuit 530.

As shown in FIG. 8, before the impedance matching circuit 530 is added, when the glucose concentration is 0% and at 20%, the impedance change according to the concentration is not large on the Smith chart. In addition, when the impedance matching circuit 530 is added, the impedance change is significantly increased at the glucose concentration of 0% and at 20%, and at 20% of the glucose in the hyperglycemic state, the impedance is sufficiently sufficient in the driving section of the oscillator 540. Increases enough to enter.

As such, when the impedance matching circuit 530 is added, the impedance change according to the change in the blood sugar value may be increased, thereby increasing the reliability of the high blood sugar alarm.

As described above, the present invention determines the operation of the oscillation unit of the blood glucose sensor unit, which is a passive circuit without a separate blood glucose measurement circuit and control device, it is possible to implement an alarm with a simpler structure than the prior art. Thus, not only facilitate the implementation of the portable blood glucose alarm, but also reduce the manufacturing cost.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the technical configuration of the present invention described above may be modified in other specific forms by those skilled in the art to which the present invention pertains without changing its technical spirit or essential features. It will be appreciated that it may be practiced. Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all aspects. In addition, the scope of the present invention is shown by the claims below, rather than the above detailed description. Also, it is to be construed that all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention.

1 is a control block diagram of a hyperglycemic alarm apparatus according to an embodiment of the present invention.

2 is a structural diagram of a blood sugar sensor according to a first embodiment of the present invention.

3 is a structural diagram of a blood glucose sensor according to a second embodiment of the present invention.

4 is a structural diagram of a blood sugar sensor according to a third embodiment of the present invention.

5 is a Smith chart of the hyperglycemic alarm device according to an embodiment of the present invention.

Figure 6 is a graph of the output simulation results according to the blood glucose concentration of the high blood sugar alarm device of the present invention.

7 is a control block diagram of a hyperglycemic alarm apparatus according to another embodiment of the present invention.

8 is a graph of output simulation results according to impedance matching of the hyperglycemic alarm device of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10: alarm unit 12: receiver

14: alarm unit 100, 500: portable blood sugar detection unit

110, 510: power supply unit 120, 540: oscillation unit

200, 520: blood sugar sensor 210, 310, 410: dielectric

220, 320, 420: metal shield 230, 330, 430: exposed part

340, 440: via hole 250, 350, 450: strip line

460: CPW 530: impedance matching circuit

Claims (10)

A blood sugar sensor unit having an impedance varying according to a blood sugar state of the user when contacted with a human body of the user; An oscillator for transmitting an alarm signal of a specific frequency band to the outside through an antenna when the impedance of the blood sugar sensor is adjusted to a predetermined range; And a power supply unit for supplying driving power to the oscillation unit. The method of claim 1, And a warning unit configured to receive the alarm signal and to alarm a high blood sugar state of the user by using at least one of light, sound, vibration, and radio waves. The method of claim 1, And a matching circuit for matching the impedance of the blood glucose sensor part changed by the human body contact with the alarm propagation impedance of the oscillation part. The method of claim 3, wherein The matching circuit is characterized in that the hyperglycemic alarm device characterized in that it is formed of a strip line interposed in the connection line of the blood sugar sensor unit and the oscillation unit. The method of claim 1, The blood sugar sensor unit, A plate-like dielectric; At least one surface of the dielectric shields the dielectric so as to be open, and a metal shield formed with an exposed portion to allow a user's body contact with a predetermined region of the shielded area; And a strip line provided on an open side of the dielectric and connected to the oscillation unit. The method of claim 1, The blood sugar sensor unit, A plate-like dielectric; At least one surface of the dielectric shields the dielectric so as to be open, and a metal shield formed with an exposed portion to allow a user's body contact with a predetermined region of the shielded area; A strip line provided on an open surface of the dielectric and connected to the oscillation part; And a via hole penetrating the exposed portion and the strip line. The method of claim 1, The blood sugar sensor unit, A plate-like dielectric; At least one surface of the dielectric shields the dielectric so as to be open, and a metal shield formed with an exposed portion to allow a user's body contact with a predetermined region of the shielded area; A strip line provided on an open surface of the dielectric and connected to the oscillation part; A coplanar waveguide (CPW) formed in the dielectric region exposed through the exposed portion; And a metal via hole passing through the CPW and the strip line. The method of claim 1, The oscillation unit, And a transistor for oscillating a specific frequency signal when the impedance connected to the gate is adjusted to a predetermined range. A blood sugar sensor unit having an impedance varying according to a blood sugar state of the user when contacted with a human body of the user; An alarm unit for generating a high blood sugar alarm when the impedance of the blood glucose sensor unit is adjusted to a predetermined range; And a matching circuit for matching the impedance of the blood sugar sensor part changed by the human body contact with the high blood sugar alarm generating impedance of the alarm part. The method of claim 9, The alarm unit, A high blood sugar alarm device further comprising an alarm unit for alerting a user of a high blood sugar state using at least one of light, sound, vibration, and radio waves.

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