KR20170096876A

KR20170096876A - Portable body fat measurement device using wireless communication

Info

Publication number: KR20170096876A
Application number: KR1020160018690A
Authority: KR
Inventors: 이원호; 김상묵
Original assignee: 금오공과대학교 산학협력단; 이원호; 김상묵
Priority date: 2016-02-17
Filing date: 2016-02-17
Publication date: 2017-08-25

Abstract

The portable body fat measurement device includes a human body impedance measuring unit connected to an electrode contacting a human body and measuring a human body impedance using an alternating current; A main controller for receiving the body impedance measured by the body impedance measuring unit and calculating the body fat percentage of the human body in consideration of the body weight information and the key information; And a portable terminal that provides weight information and key information of a human body to be measured to the main control unit through a wireless communication method and receives and displays the body fat percentage calculated by the main control unit through a wireless communication method.

Description

[0001] The present invention relates to a portable body fat measurement device using wireless communication,

The present invention relates to a body fat measurement device, and more particularly, to a portable body fat measurement device using wireless communication.

The constituents of the human body can be largely divided into water, protein, bone (mineral) and fat. Quantitative analysis of these components is called body composition analysis.

Body composition analysis is the most basic and essential information for examining the health status of the subjects. It is most effective in identifying diseases and symptoms such as obesity, osteoporosis, malnutrition, edema and the like.

Especially in modern people, obesity - related diseases such as adult diseases are becoming popular due to busy daily life and western eating habits. Body composition analysis is used for accurate diagnosis of obesity by suggesting the proportion of body fat in body weight.

Among the human body components, the fat free mass (FFM) is the component excluding the body fat, and the muscle occupies a large proportion. Therefore, it is possible to diagnose the muscle development level of the subject, the nutritional status of the cancer patient or consumable patient, the progress of the disease, and the therapeutic effect through the fat amount. Various methods such as the body density method, fatigue method, and near-infrared method are used for the analysis of body composition.

In the conventional body fat measurement device, a method of attaching a plurality of electrodes to the chest, back and sole, applying current and voltage through the plurality of electrodes, and then measuring the body fat.

Such a conventional body fat measurement device has a disadvantage in that the size of the device is very large because electrodes need to be attached to a plurality of parts of the human body in order to improve measurement accuracy. Therefore, the subject had to visit the place where the body fat measurement device was installed and measure it.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned technical problems, and it is an object of the present invention to provide a portable body fat measurement device capable of transmitting weight information and key information of a human body to be measured in a wireless manner and displaying the calculated body fat percentage on a portable terminal do.

According to an embodiment of the present invention, a human body impedance measuring unit connected to an electrode contacting a human body and measuring a human body impedance using an alternating current; A main controller for receiving the body impedance measured by the body impedance measuring unit and calculating the body fat percentage of the human body in consideration of the body weight information and the key information; And a portable terminal for providing weight information and key information of a human body to be measured to the main control unit through a wireless communication method and receiving and displaying the body fat percentage calculated by the main control unit by a wireless communication method, / RTI >

The human body impedance measuring unit may further include: an alternating current generating unit that supplies an alternating current to the electrode; A voltage detector for detecting a human body voltage when the AC current is supplied; And a living body impedance calculator for calculating the human body impedance using the human body voltage.

The main control unit calculates the body density using the body weight information, the key information and the human body impedance of the human body to be measured, and finally calculates the body fat percentage using the body density.

The main control unit calculates the body density using Equation (1).

&Quot; (1) "

Wt: Weight information (kg)

Ht: key information (cm)

Z: Human Impedance (Ohms)

Further, the main control unit calculates the body fat percentage using Equation (2).

&Quot; (2) "

The portable body fat measurement device according to an embodiment of the present invention transmits body weight information and key information of a human body to be measured using a portable terminal in a wireless manner and transmits the calculated body fat percentage to a portable terminal in a wireless manner for display have.

Therefore, it is possible to miniaturize the product and diversify the utilization by interlocking with various applications installed in the portable terminal.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the principle of a bioelectrical impedance method. Fig.
2 is a configuration diagram of a portable body fat measurement device according to an embodiment of the present invention;
Fig. 3 is a diagram of a prototype of the portable body fat measurement device of Fig. 2; Fig.
4 and 5 are application screens displayed on a portable terminal of a portable body fat measurement device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing the principle of a bioelectrical impedance method. FIG.

1, bioelectrical impedance analysis (BIA) measures the impedance or electrical conductivity of a human body by flowing a weak alternating current into the human body, calculates the impedance or electrical conductivity of the human body together with the measured body weight and height, (Water content), moisture balance inside and outside the cell, body fat mass, body fat mass, and the like.

The bioelectrical impedance method is based on the fact that current flows through the body in the body. Body fat contains about 73% moisture and is electrically conductive. Assuming that the volume V of the conductor through which the current passes is constant, the length L of the conductor and the impedance Z have a constant relationship.

That is, the bioelectrical impedance analysis (BIA) is a method in which the human body is made of water with good electricity, and the fact that the electric power passes through the water varies depending on the amount of moisture, It is a method to measure the body water by obtaining the impedance generated by flowing.

FIG. 2 is a configuration diagram of a portable body fat measurement device according to an embodiment of the present invention, and FIG. 3 is a diagram of a prototype of the portable body fat measurement device of FIG.

The portable body fat measurement device according to the present embodiment includes only a simple configuration for clearly explaining the technical idea to be proposed.

2 and 3, the portable body fat measurement device includes an electrode 100, a human body impedance measuring unit 200, a main control unit 300, and a portable terminal 400.

The detailed configuration and main operation of the portable body fat measurement device constructed as above will be described as follows.

The electrode 100 may be formed of a metal having good conductivity, such as zinc, brass, or copper. At this time, the surface may be coated with a material such as silver or gold to improve the conductivity.

The electrode 100 may be configured to be attached to two parts of the human body. In this embodiment, the electrode 100 may be attached to the palm or hand, or may be configured to be held by the user with both hands.

The human body impedance measuring unit 200 is connected to the electrode 100 that is in contact with the human body and measures the human body impedance using an alternating current.

The human body impedance measuring unit 200 supplies the alternating current to the electrode 100 and detects the human body voltage when the alternating current is supplied. When the human body voltage is detected, the human body impedance can be calculated by the relationship between the voltage-current-resistance.

The human body impedance measuring unit 200 includes an alternating current generating unit 210, a voltage detecting unit 220, and a bioimpedance calculating unit 230.

The alternating current generating unit 210 is preferably configured to supply an alternating current to the electrode while supplying an amount of current to 500 A or less while supplying an alternating current in the form of a sine wave. The voltage detector 220 detects the human body voltage when the AC current is supplied, and the bioimpedance calculator 230 is configured to calculate the human body impedance using the human body voltage.

Meanwhile, the main control unit 300 receives the human body impedance measured by the human body impedance measuring unit 200, and calculates the body fat percentage of the human body in consideration of the body weight information and the key information.

That is, the main control unit 300 calculates the body density using the body weight information, the key information, and the human body impedance of the human body to be measured, and finally calculates the body fat percentage using the body density .

For example, the main control unit 300 can calculate the body density using Equation (1).

&Quot; (1) "

Wt: Weight information (kg)

Ht: key information (cm)

Z: Human Impedance (Ohms)

Body Density can be calculated according to different formulas for men and women, and the body fat percentage can be calculated using Body Density calculated in Equation (1).

That is, the main control unit 300 can calculate the body fat percentage using Equation (2).

&Quot; (2) "

For reference, in the above-described example, the main controller 300 calculates the body density using Equation (1), but may calculate the body density using Equation (3) according to the embodiment.

&Quot; (3) "

Wt: Weight information (kg)

Ht: key information (cm)

Z: Human Impedance (Ohms)

Referring to Equation (3), different formulas are used for men and women, and it is preferable that the age of men and women to which this formula is applied is limited to 20 to 40 years.

Meanwhile, the portable terminal 400 is configured to provide weight information and key information of a human body to be measured to the main control unit 300 in a wireless communication manner.

The portable terminal 400 collectively refers to a portable device such as a mobile phone, a smart phone, a smart pad, etc., which the user can carry while using the portable terminal 400. In this embodiment, the portable terminal 400 is assumed to be a portable terminal configured as a smart phone.

4 and 5 are application screens displayed on the portable terminal 400 of the portable body fat measurement device according to the embodiment of the present invention.

Referring to FIGS. 4 and 5, when an application of the portable terminal 400 is executed, a screen for inputting personal information such as name, sex, age, key, and weight is displayed. To the main control unit 300.

In this case, the wireless communication method can be applied to the WIFI or the NFC method. The NFC is an abbreviation of Near Field Communication in the short-range wireless communication, has a bandwidth of 13.56 MHz, and can exchange data within a maximum distance of 10 cm.

If the wireless transmission range is too wide, an additional authentication technique must be applied to enhance security. Therefore, it is desirable to use an NFC communication method capable of exchanging data within about 10 cm.

The portable terminal 400 is configured to receive and display the body fat percentage calculated by the main control unit 300 using a wireless communication method. In this case, when the NFC communication method is applied between the main control unit 300 and the portable terminal 400, data can be exchanged within about 10 cm, so that leakage of personal information such as the body fat percentage can be prevented.

Particularly, after the body fat percentage is calculated and transmitted to the portable terminal 400, the main control unit 300 automatically deletes the personal information such as the body fat percentage, the name, the sex, the height, and the weight, .

Thus, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: electrode
200: human body impedance measuring unit
210: AC current generating unit
220: Voltage detector
230: bioimpedance computing unit
300:
400: portable terminal

Claims

A human body impedance measuring unit connected to an electrode brought into contact with a human body and measuring a human body impedance using an alternating current;
A main controller for receiving the body impedance measured by the body impedance measuring unit and calculating the body fat percentage of the human body in consideration of the body weight information and the key information; And
A portable terminal that provides weight information and key information of a human body to be measured to the main control unit through a wireless communication method and receives and displays a body fat percentage calculated by the main control unit through a wireless communication method;
And a portable body fat measurement device.

The method according to claim 1,
Wherein the human-
An alternating current generator for supplying an alternating current to the electrode;
A voltage detector for detecting a human body voltage when the AC current is supplied; And
And a living body impedance calculator for calculating the human body impedance using the human body voltage.

The method according to claim 1,
The main control unit,
Wherein the body fat percentage is calculated using the body weight information of the human body to be measured, the key information, and the body impedance using the body impedance, and finally calculating the body fat percentage using the body density.

The method of claim 3,
The main control unit,
Wherein the body fat density is calculated using Equation (1).
&Quot; (1) "

Wt: Weight information (kg)
Ht: key information (cm)
Z: Human Impedance (Ohms)

5. The method of claim 4,
The main control unit,
And the body fat percentage is calculated using Equation (2).

&Quot; (2) "