KR20020092122A - The method for measuring body fat and device the same - Google Patents

Abstract

PURPOSE: A method and an apparatus for measuring body fat are provided to measure and manage continuously a user's body fat by storing and managing user's private information. CONSTITUTION: A user turns on a body fat meter(10) and inputs or outputs his private information according to a menu indicated on a display panel(42) of the body fat meter(10). The user performs a weight input process by observing a weight input image of the display panel and operating each button to input his weight. The user performs a height input process by observing a height input image of the display panel and operating each button to input his height. The user performs an age input process by observing an age input image of the display panel and operating each button to input his age. The user performs a sex input process by observing a sex input image of the display panel and operating each button to input his sex. The user performs a weight input process by observing a weight input image of the display panel and operating each button to input his weight. A process for measuring body fat is performed. The user's private information is stored.

Description

Body fat measurement method and apparatus thereof {THE METHOD FOR MEASURING BODY FAT AND DEVICE THE SAME}

The present invention relates to a measurement of body fat, and more particularly, to a method and apparatus for measuring body fat, which facilitates carrying and manipulation as well as facilitating continuous management of body fat by recording and storing user's personal information.

In general, the human body contains about 17% of fat, which acts as energy accumulation and body temperature maintenance and gut protection.

Here, when the fat content distributed in the human body is more or less than about 17% (15% to 20%), it will not only adversely affect the human body, but also included in the human body in a diet that is currently popular for obesity and health. The amount of fat ingested is used as an important measure of obesity.

The measurement of body fat contained in the human body may be performed by calculating a body fat percentage by comparing a body weight previously measured in water with a body weight measured in the air, or calculating a body fat percentage by measuring an amount of potassium contained in the human body, Inserted into the body to measure the volume of the body to calculate the body fat percentage, and the like.

Here, according to the conventional body fat measurement method, a procedure for the entire body of the user is performed, thereby causing inconvenience to the user's body, such as moving to the user's body and adding a reagent, as well as space and user time for body fat measurement. Body fat was difficult to measure because of the limitations.

In addition, the body fat measurement method is to measure the amount of fat contained in the human body using the electrical conductivity in the human body, which is the electrical conductivity of the fat contained in the human body, the tissue of the tissue except the fat containing water and electrolyte Using a different electrical conductivity is a method of energizing the human body to determine the body fat percentage contained in the human body according to the degree of energization.

In the method of measuring body fat percentage according to the electrical conductivity, it is conventionally achieved by providing an electrode capable of passing an electric current at a plurality of points of the human body, and conducting an electric current through the electrode to measure the impedance conducted through the human body. .

Therefore, the measurement of the body fat percentage contained in the human body of the user moves to a place where the user can measure the body fat is installed, a plurality of electrodes connected to the body fat measuring device is attached to the user's body, and the attached electrode The body fat of the user has been measured by measuring the impedance that is energized through.

However, the conventional measuring method as described above has a problem that the measurement can be made only at the place where the body fat measuring device is installed, which is not only limited by space, but also complicated by the measuring process such as installation of each electrode.

In addition, since there is no means for continuously comparing and observing a record of measuring the body fat of the user, there is a problem that it is difficult to obtain data related to health and obesity such as the body fat change rate of the user.

The present invention has been invented to solve the above-mentioned conventional problems, and to provide a body fat measuring method and apparatus for allowing a user to easily carry, manage and operate.

Another object of the present invention is to provide a method for measuring body fat and a device for continuously recording and managing a body fat percentage of a user.

Still another object of the present invention is to facilitate a grip and electrode contact of the user's body fat measuring device, as well as to induce a stable electrode contact of a portion of the user's body to achieve a more accurate body fat measurement method and its In providing a device.

1 to 4 is a block diagram of a method for measuring body fat according to an embodiment of the present invention.

5 is a flow chart of a method for measuring body fat according to the present invention.

6 is a perspective view of a body fat measuring device according to the present invention.

Figure 7 is a perspective view of the separation and binding of the body fat measuring apparatus according to the present invention.

8 is a circuit block diagram of a body fat measuring apparatus according to the present invention.

9 is a partial cross-sectional view of an electrode portion according to the present invention.

<Description of Symbols for Major Parts of Drawings>

10-Body fat measuring device 20-Front case

21-electrode 30-rear case

40-Circuit Board 41-Control Unit

42-display part 43-input part

44-Output 45-Rectifier

46-Electrode connector 50-Measuring part

51-Measuring part 52-Setting part

53-storage 60-first electrode

70-Second Electrode 80-Power

The present invention for achieving the technical problem to be achieved by the invention, the user checks the personal information, input the weight and height and gender in the personal information, the body part of the user in close contact with each electrode of the body fat measurement device And conducting a current through an electrode in close contact with the user's body, measuring the impedance supplied through the user's body, and presetting the impedance supplied through the user's body and the body information input by the user. Compared with and calculates and displays the body fat percentage of the user, characterized in that for storing the calculated body fat percentage in the user's personal information.

Another feature of the invention is characterized in that for storing a plurality of user body information input by the user.

Another feature of the present invention, the user checks the personal information to derive the user's body information, in the state of deriving the user's body information to measure the current supply current through the electrode of the body fat measurement device, Characterized in that the body fat of the user is measured through the user's body information and current supply information.

Another feature of the invention is characterized in that the user displays a plurality of body fat measurement rate previously measured in the personal information through the display means of the body fat measurement device, or output through other output means for use.

Another feature of the present invention is connected to the front case, a rear case formed to correspond to the front case, a circuit board inserted and fixed to the center of the front case and the rear case, and connected to the wire connected to the circuit board An electrode installed at upper edges of the front case and the rear case, a display unit connected to the front center of the front case, and a display unit connected to the circuit board and an input unit installed at the front of the front case to input an electrical signal to the circuit board; And a power source installed at a lower portion of the rear case.

Another feature of the invention is characterized in that the electrode provided in the front case is connected via a spring capable of energizing the current at the same time having a resilient force with the circuit board.

Another feature of the present invention is characterized in that the front case and the rear case are formed in the same rectangular plate shape as the circuit board, and a predetermined space for accommodating the circuit board is formed therein.

According to another aspect of the present invention, the circuit board includes an electrode connection unit, a measuring unit measuring an impedance conducted through the electrode, a setting unit recording various reference body fat percentages, and a body fat percentage by comparing the energized impedances with a preset impedance. A measurement unit, a storage unit for storing the measured body fat percentage, a control unit for processing information received from the measurement unit and the storage unit, an input unit for inputting information operated by a user, and a display unit for displaying information to the user; It is characterized by the configuration.

Another feature of the invention is characterized in that it further comprises a rectifier for rectifying the current flowing through the user body.

Another feature of the invention is characterized in that the storage unit further records the user's body information.

Still another feature of the present invention is characterized in that the control unit further comprises an output unit connected to the external device.

Next, the method of measuring body fat according to the present invention will be described.

According to the present invention, a user operates a power button of a body fat measuring device input unit to supply power to a circuit board and each electric component installed inside the body fat measuring device, and according to the application of the power to the display unit of the body fat measuring device. Displaying the set numerical values and symbols, selecting a preset personal information by pressing the selection button of the input unit, or selecting a storage area for inputting the personal information of the user; Inputting, inputting the height of the user, inputting the age of the user, inputting the gender of the user, and starting the start button of the body fat measurement apparatus according to the user's selective operation. In addition to clicking, the body part such as the user's finger is brought into contact with the four electrodes provided in the body fat measuring device. And measuring the impedance circulated in the user's body and comparing the preset information with the preset information to display the body fat percentage of the user through the display unit of the body fat measuring device. And storing the user's body fat percentage and the user's body information in a storage area selected by the user.

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

1 to 4 show a method for measuring body fat according to the present invention, FIG. 5 shows a configuration procedure of the method for measuring body fat according to the present invention, and FIGS. 6 to 9 show the configuration of the body fat measuring device according to the present invention. It is shown.

1 shows an embodiment according to the present invention, including a personal information selection step, a weight input step, a height input step, an age input step, a gender input step, a measurement step and a personal information storage step It is composed.

In the personal information selection step, the user who intends to measure the body fat for the first time operates the body fat measuring device, turns on the power supply 80, and derives the personal information of the user while observing the information displayed through the display unit 42 of the body fat measuring device. Or by selecting a storage area for storing the personal information, the first user presses the power 80 button to energize the power supply 80 to the circuit board 40 of the body fat measuring apparatus and the display unit 42 of the body fat measuring apparatus. A single storage area is selected from the storage areas M1, M2, M3, ..., displayed by means of the increase and decrease keys of the body fat measuring device.

In the weight input step, the user can select a storage area for storing personal information and display the screen for inputting the weight of the user in the controller 41 of the body fat measuring apparatus which has received the user's selection information. 42), while the user observes the weight input screen displayed on the display unit 42, the user inputs his / her own weight by operating the increase / decrease button.

At this time, the user's weight input is preferably set in kg unit, it is preferable to include the first digit below the decimal point.

In the height input step, the user inputs the height of the user while observing the height input screen displayed on the display unit 42.

In this case, the height input of the user is preferably set in units of cm, and the input screen such as weight and height is displayed while blinking according to the user's increase / decrease button manipulation, and continuously blinks until the user selects the button. It is desirable to induce the user's selection, and this is the same in the operation of all the buttons of the body fat measuring apparatus according to the present embodiment.

In addition, it is preferable to directly display the input screen of the next step to induce the input of the body information of the next step to the user who inputs the body information such as the weight and height.

In the age input step, the user inputs his or her own age while observing the age input screen displayed on the display unit 42.

In this case, the user's age input is preferably set to increase or decrease in units of one year.

In the gender input step, the user inputs his or her gender while observing the gender input screen displayed on the display unit 42.

At this time, the gender input of the user is preferably displayed as male / female or M / F to be changed according to the user's selection button.

In the measuring step, the user inputs body information such as weight, height, age, and gender, and transmits the body information input by the user from the controller 41 of the body fat measuring device to the measurement unit 50 or the user. Temporarily stores the selected user's personal information storage area, and the user presses the start button of the body fat measuring device while the body information of the user is recorded, and the body part of the user. The thumb and forefinger of the right finger are in contact with two pairs of electrodes of the body fat measuring device to measure the body fat percentage contained in the user's body.

Here, the measurement of body fat in the user's body is irradiated with a high frequency of 50 ~ 100MHz by the control unit 41 through a part of the body of the user in contact with the electrode of the body fat measurement politics, the irradiated high frequency is the body of the user One end of the contact area (in this embodiment, the thumb and forefinger of the user's left hand) and the other end (in this embodiment, the thumb and forefinger of the user's right hand) are blocked from fat in the body and energized by extracorporeal tissue in the body and the body fat The measuring unit 51 of the measuring device is energized, and the measuring unit 51 measures the amount of the high frequency energized by the measuring unit 51 and the amount of the high frequency passing through the body set in the setting unit 52 of the body fat measuring device and the measuring unit ( In step 50), the body fat percentage of the user is measured by comparison with each other, and the body fat percentage of the measured user is displayed on the display unit 42.

The personal information storing step records and stores the body information of the user input by the user and the body fat percentage of the user body measured by the user in the storage unit 53 storage area of the body fat measurement device first selected by the user.

In this case, the body information of the user may be recorded and stored in the storage area prior to the measurement of body fat, and of course, the information on the measurement date and time may be simultaneously recorded and stored at the same time as the body information and the body fat percentage information. .

Here, the personal information may include only body information input by the user and body fat information of the user corresponding to the body information, and only body information input by the user.

Figure 2 shows an embodiment of a method for measuring the body fat percentage in a state in which the user has already input the body information according to the present invention, the present invention is a personal information selection step, body fat percentage information reading step, measuring step, body fat percentage It comprises the information storage step, body fat percentage information output step and personal information storage step.

In the personal information selection step, the user turns on the power 80 of the body fat measuring device and selects a storage area storing the body information preset by the user or the body fat percentage information measured by the user by operating the increase / decrease button. .

The body fat percentage information viewing step displays the user's previously measured body fat percentage recorded in the storage area selected by the user through the display unit 42.

At this time, the body fat percentage of the user can be displayed by arranging only the value of the body fat percentage by the measurement time, and of course, it is also possible to display the measurement date and time of the body fat percentage at the same time.

In the measuring step, the user contacts a part of the body to an electrode of the body fat measuring device while the body information of the user recorded in the storage area selected by the user is transmitted from the control unit 41 to the measuring unit 50. By selecting the start button of the measuring device to measure the body fat percentage of the user's body by the current supplied through each electrode (60, 70) of the body fat measuring device.

The body fat percentage information storing step records the body fat percentage measured by the user's body in the storage area of the storage unit 53 first selected by the user.

At this time, the recording of the body fat percentage is preferably arranged in chronological order compared to the pre-recorded body fat percentage of the user and recorded in the storage unit 53.

The body fat percentage information outputting step transmits the body fat percentage information of the user recorded in the storage unit 53 to an external device such as a computer or a printer through the output unit 44 of the body fat measurement apparatus according to the user's selective manipulation. .

The personal information storage step stores the body fat percentage measured by the user in a storage area selected by the user in addition to the body fat percentage previously measured.

Next, another embodiment according to the present invention configured as described above will be described.

3 illustrates an embodiment of a method for deriving body information in personal information preset by a user and measuring a body fat percentage according to the present invention.

The present invention comprises a body information selection step, a measurement step, and a personal information storage step.

In the body information selection step, the user selects the power 80 button of the body fat measuring device to apply a current to the body fat measuring device, and according to the application of the power 80 of the body fat measuring device, the display unit 42 of the body fat measuring device. The symbols of the storage area storing the user's body information are displayed, and the user selects his / her body information by operating the increase / decrease button among the symbols of the body information storage area.

In the measuring step, the user's body information preset in the selected storage area is transmitted to the control unit 41 of the body fat measuring device and is also transmitted to the measurement unit 50, and the body information is transmitted to the measurement unit 50. In this state, the user selects the start button in a state in which the user contacts the electrode of the body fat measuring device to measure the impedance that is energized into the user's body in the measuring unit 51, and the measured information is measured. The body fat percentage of the user's body is measured by measuring at 50, and the measured body fat percentage is displayed to the user through the display unit 42.

The personal information storage step stores the measured body fat percentage in addition to the storage area first selected by the user.

In this case, when there is a change in the body information selected by the user, the weight, height, age, gender, etc. corresponding to the user's body information may be selectively modified according to the selective manipulation of the user's selection button. Of course.

Next, another embodiment according to the present invention configured as described above will be described.

The present invention comprises a personal information selection step, a measurement step, and a personal information storage step.

In the personal information selection step, the user selects one storage area among the personal information storage areas displayed on the display unit 42 of the body fat measurement device, and the user's body information recorded in the storage area selected by the user and measured by the user One body fat percentage is transmitted from the storage unit 53 to the measurement unit 50 under the control of the control unit 41.

The measuring step measures the user's body fat percentage by comparing the body information of the user transmitted to the measuring unit 50 with the body fat percentage measured beforehand and the amount of current supplied by the user through the body fat measuring device.

The personal information storage step stores the body fat percentage measured through the user's body in a storage area selected by the user.

In this case, it is preferable that the pre-measured body fat percentage and the newly measured body fat percentage are stored in a chronological order.

Therefore, the present invention, as shown in Figure 5, the user who wants to measure the first body fat operates the body fat measuring device, and stores the personal information in the display unit 42 of the body fat measuring device according to the operation of the body fat measuring device A selection screen for a storage area is output. On the output storage area selection screen, the user selects a storage area by selecting an increase / decrease button, and a user who does not have body fat percentage and body information previously measured in the storage area is selected by the user. By inputting body information such as weight, height, age, sex, etc. and storing it with individual or body fat percentage, the user who has the preset information in the storage area checks the preset body information and body fat percentage through the body fat measuring device. The current body fat is measured, and the body information and body fat percentage of the user who completed the measurement are stored in the storage area selected by the user. It is stored.

Next, the body fat measuring apparatus according to the present invention configured as described above will be described.

6 to 7, the front case 20 and the rear case 30, the circuit board 40, the first electrode 60, the second electrode 70 and the power supply It comprises 80.

The front case 20 forms a rectangular plate shape and is formed by forming a rectangular groove to accommodate the circuit board 40 therein.

The rear case 30 is formed to form a shape corresponding to the front case 20 and is configured to receive a volume corresponding to half of the circuit board 40.

The circuit board 40 is formed in a rectangular plate shape, and a plurality of electronic components are accommodated in the front and rear surfaces thereof.

Here, the front case 20 and the rear case 30 is preferably formed in a rectangular box shape to accommodate the circuit board 40, and the size of the front case 20 and the rear case 30 to be gripped by a user's hand. Do.

The first electrode 60 is attached to form an elliptical plate shape at an upper edge portion of one side of the outer surface of the front case 20 and the rear case 30, and electrode connection parts such as the circuit board 40 and wires. Connected via 46.

In addition, the first electrode 60 is formed in a substantially elliptical plate shape and is composed of a conductor so that a part of the user's body is in contact with the power supply.

In addition, in the present embodiment, the first electrode 60 is formed to have the same shape as the shape of the finger tip pressed so that the user's finger tip contacts, and the user's palm or a part of the palm touches. Is formed.

The second electrode 70 is attached to form a substantially oval plate shape at the upper edges of the outer sides of the front case 20 and the rear case 30, and an electrode connection part such as the circuit board 40 and an electric wire. Connected via 46.

The second electrode 70 is formed in the same shape as the first electrode 60 and is installed at the other ends of the front case 20 and the rear case 30 in which the first electrode 60 is installed.

Here, the first electrode 60 and the second electrode 70 are all formed in pairs so that an extreme part is formed at an inner portion of the part of the user's body that is in contact with the electrode by contacting a pair of electrodes. It is desirable to.

The power supply 80 is installed at the lower end of the rear case 30, and in the present invention, a space for accommodating a universal battery and a power supply 80 formed from the battery, each component of the circuit board 40 It is configured to be energized by.

The circuit board 40 further includes a control unit 41, a display unit 42, an input unit 43, an output unit 44, a rectifier unit 45, a measurement unit 50, and a measurement unit 51. ), A setting unit 52, and a storage unit 53.

The controller 41 includes a central processing unit configured to drive arithmetic and predetermined matters in response to the reception of an electrical signal.

The display unit 42 includes a liquid crystal display and a protective window covering the entire surface of the liquid crystal display so as to display a display that a user can observe under the control of the control unit 41.

In addition, the liquid crystal display of the display unit 42 is installed in the center of the circuit board 40 is configured to display to the outside through a protective window provided in the center of the front case.

The input unit 43 is installed at a plurality of front surfaces of the front case and configured to press an electrode button formed on the circuit board 40 by an external pressing force, and a power button for applying a power 80 to the body fat measuring device. And a selection button for confirming and selecting a user's operation, and a start button for energizing the electrode to start measurement of body fat in a state where the electrode is in contact with the body of the user.

The output unit 44 is configured by forming an output terminal or the like so that a conductive wire or the like capable of distributing information is connected so as to transmit information recorded in the storage unit 53 of the body fat measuring device to an external device such as a computer and a printer. do.

The rectifier 45 is a bandpass filter for rectifying a frequency having a width higher than a width (50-100 MHz) of a prescribed frequency among the high frequencies through which the control unit 41 energizes the first electrode 60. And a band pass filter.

The electrode connector 46 connects the current rectified by the rectifier 45 to the first electrode 60, or transmits a current circulated through the second electrode 70 to the circuit board 40. It is formed of wires connected to be distributed.

Here, the electrode connecting portion 46 is connected to reach the electrode from the circuit board 40, and composed of a spring or the like formed by rolling a wire to enable the electricity between the electrode plate and the circuit board 40 in a circle Of course you can,

In addition, as shown in FIG. 9, the electrode connecting portion 46 has the same outer shape as the outer shape of the electrode at the electrode attaching position of the front case 20, and forms a stepped jaw to support the outer circumference of the electrode. In addition, the electrode connecting portion 46 having a predetermined elasticity is formed in a spring shape at the center of the rear surface of the first electrode 60 or the second electrode 70 which is inserted into the electrode sphere 21 and supported by the jaw. It is a matter of course that the other end of the electrode connecting portion 46 may be bonded to the circuit board 40.

Accordingly, the spring-shaped electrode connector 46 elastically supports the first electrode 60 and the second electrode 70 to support a force that the user contacts and presses a part of the body of the user. The pressure and the area in contact with the electrode are kept the same.

The measuring unit 50 is configured to compare the body information of the user and the impedance energized by the user's body with the preset body information and the impedance, and the measuring unit 51 and the setting unit 52 and storage which will be described later. Interconnected with section 53.

The measuring unit 51 is configured to receive a current supplied from the first electrode 60 of the body fat measuring device to the second electrode 70 through the user's body and measure a corresponding impedance.

The setting unit 52 is configured to record the body information of the universal users, the impedance passed through the universal body, and to derive at the request of the controller 41 and the measurement unit 50.

The storage unit 53 is configured to record the body information of the user transmitted from the control unit 41 and the measurement unit 50, and the body fat percentage measured by the user's body.

The body information and body fat percentage information of the user may be separately stored, and the body information and body fat percentage information of the user may be stored together in the storage area selected by the user.

The power source 80 is installed at the lower end of the rear case 30, and is composed of a universal battery and a battery in this embodiment.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims may be various. It is to be understood that such changes may be made, and such changes will fall within the scope of the claims.

As described above, according to the present invention, there is an effect of storing the user's body information and using the information again when measuring the body fat of the user.

Another effect of the present invention, by recording the body fat percentage of the user has the effect of recognizing the change in the body fat percentage of the user.

Another effect of the present invention is to output the user's body information and body fat percentage to other devices and the like to improve the usability of the information.

Another effect of the present invention is to utilize the user's body information and body fat percentage information to facilitate the operation of the user's body fat measurement device for measuring body fat.

Another effect of the present invention, as well as to facilitate the user's grip and operation of the body fat measuring device, and to maintain a stable ground state for the electrode has an effect that can be measured more accurate body fat percentage.

Claims (13)

A personal information selection step of confirming personal information by a user operating an input unit of the body fat measuring device; Inputting body information by the user by operating an input unit of the body fat measuring device; The user is in close contact with a part of the body to each electrode of the body fat measuring device to energize the current supplied by the body fat measuring device through the body, by measuring the impedance passed through the body to measure the body fat percentage of the user body and In addition, the measuring step of displaying through the display unit of the body fat measurement device; And And a personal information storage step of storing the measured body fat percentage of the user together in the personal information checked by the user. The method of claim 1, The step of inputting the user's body information comprises the user's weight input step, height input step, age input step and gender input step comprising a body fat measurement method. The method of claim 1, The personal information selection step includes any one of selecting a user's body information preset in the storage area, and simultaneously selecting the body information and a body fat percentage measured and stored by the user at the same time. How to measure body fat. The method of claim 1, The personal information selection step includes a body fat percentage information reading step of displaying the body fat percentage previously measured by the user through the display unit. The method of claim 1, The personal information storage step includes a body fat percentage information storage step of storing the body fat percentage information measured through the user's body in the storage area selected by the user. The method of claim 1, The personal information storage step further comprises a body fat percentage information output step of outputting the body information and body fat percentage information stored in the user's storage area to an external device through an output unit provided in the body fat measurement device. A personal information selection step of the user selecting personal information recorded in the storage area of the body fat measuring apparatus; A measuring step of measuring, by the user, a body fat percentage by contacting a part of the user's body with an electrode of the body fat measuring device; And And a personal information storage step of recording the measured body fat percentage information together in a storage area selected by the user. The method of claim 7, wherein The personal information selection step is a body fat measurement method, characterized in that to select and derive the user's body information previously set in the storage area. Rectangular front plate case; A rear case formed to correspond to the front case; A control unit comprising a central processing unit which is inserted and fixed between the front case and the rear case and drives calculation and preset matters according to the reception of an electrical signal, and the current generated by the control unit is defined through a band filter. A rectifying unit that conducts electricity through a bay, a measuring unit for measuring a corresponding impedance by receiving a current supplied from the one electrode to the other electrode through the user's body, and recording the general body information and the impedance distributed through the universal body And a setting unit configured to derive the corresponding information at the request of the measuring unit, a measuring unit comparing the body information of the user and the impedance supplied to the user's body measured by the measuring unit with the preset information. The body information of the user transmitted from the control unit and the measurement unit and the side of the user's body A circuit board comprising a storage section for recording the percent body fat; An electrode formed of a plate-shaped conductor so as to be connected to an electrode connection part of the circuit board and installed on the outer surfaces of the front case and the rear case and to contact a part of the user's body to enable current flow; A display unit installed at the front center of the front case and connected to the circuit board; An input unit installed at a front surface of the front case to input an electrical signal to the circuit board; And Body fat measuring device, characterized in that made of a power source installed in the lower portion of the rear case. The method of claim 9, The electrode is a body fat measuring device, characterized in that formed in pairs on each of the front end and the front end of the rear case in pairs. The method of claim 9, The electrode is formed in an elliptical plate shape so that the user's fingers or the user's palms are in contact with the user, and the upper and lower edges of the front case and the rear case are provided so that the user grips the body fat measuring device from both sides. Body fat measuring device, characterized in that installed. The method of claim 9, The electrode connecting portion of the circuit board is in contact with the back surface of the circuit board and the electrode to achieve a current, and body fat measuring device, characterized in that made of a spring shape having a resilient force. The method of claim 9, And an output unit having an output terminal connected to the control unit to output the body information and the body fat percentage information of the user stored in the storage unit to another device under the control of the control unit.