JPH11299752A - Body fat meter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make measurable a body fat rate easily and daily by equipping a pair of electrodes for potential measurement for measuring the potential between two points in a current pass formed by a pair of electrode for current and an operation switch for inputting body data of a subject and constituting them mountable on the wrist. SOLUTION: This body fat meter 1 is constituted by integrating a body fat meter with a wrist watch and equipped with a fitting belt 2 and a body fat meter main body 10. A display part 11 and an operation part 20 are equipped in front of the body fat meter main body 10. The display part 11 is equipped with a first display part 12 to display the body fat rate and capable of switch- displaying time and date, and a second display part 13 to display body data. The body fat meter main body 10 is equipped with a second electrode 28 for current in the left side face and a second electrode 29 for potential on the right side face, and a first electrode 26 for current and a first electrode 27 for potential measurement are equipped on the back side of the main body 18. The body fat rate can be measured by those electrodes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a body fat meter, and more particularly, to provide a body fat meter that can easily measure a body fat percentage on a daily basis.

[0002]

2. Description of the Related Art Conventionally, attention has been paid to the fat percentage in the body from the viewpoint of maintaining health. An increase in the body fat percentage causes an adult disease or the like. Therefore, by measuring the body fat percentage, adult disease can be prevented. As a body fat meter for measuring the body fat percentage, there is a body fat scale incorporated in a weight scale so that the body fat percentage can be measured. That is, the current electrode forming the current path necessary for measuring the body fat percentage and the voltage electrode for measuring the potential difference generated between two points of the current path are connected to the feet of the base of the weight scale. A device provided at a mounting position is known.

[0003] In such a body fat percentage meter, the body fat percentage is determined from the weight data measured by the weight scale, the current measured by the current electrode, and the voltage measured by the voltage electrode. become.

[0004] In addition to a body fat scale incorporated in a weight scale, there is also a body fat scale of a type in which a handle is grasped.

[0005]

The body fat scale incorporated in the weight scale is suitable for installation in a bathroom or the like, but it is necessary to measure at least by taking off socks or the like. Cannot be easily measured.

[0006] Further, with respect to the body fat scale of the type that grips the handle, it is possible to measure the body fat percentage without having to take off socks such as a body fat scale built into a weight scale. However, they are not portable enough to be able to carry the body fat percentage on a daily basis regardless of the location.

Accordingly, an object of the present invention is to provide a body fat meter capable of measuring the body fat percentage more easily on a daily basis.

[0008]

Means for Solving the Problems To solve the above problems, a body fat meter according to the present invention comprises a pair of current electrodes for conducting a constant current to the body of a subject to form a current path. And a pair of voltage measurement electrodes for measuring a potential difference between two points in the current path, and an operation switch for inputting physical data of a subject, and one of the current electrodes and the voltage One of the measurement electrodes is provided on the back surface of the body of the body fat meter, and is formed so that the back surface can be attached to the wrist by contacting the back surface, and the other one of the current electrodes and the other one of the voltage electrodes are provided. One and the operation switch are provided on a front surface or a side surface (claim 1).

The body fat meter of the present invention is formed so that it can be worn on a wrist to measure a body fat percentage. This allows
It can be carried on a daily basis, and the body fat percentage can be easily measured simply by wearing it on the wrist like a wristwatch.

When the body fat meter of the present invention is mounted on the wrist of one arm of the subject, one of the current electrodes and one of the voltage electrodes provided on the back of the body of the body fat meter are provided. Is in contact with the surface of the subject's wrist. And
When the subject brings any two fingers of the other hand into contact with the other one of the current electrodes and the other one of the voltage measurement electrodes, the wrist of the wrist contacting the one current electrode The current path is formed between the part and the finger of the other hand that contacts the other current electrode. Then, in such a current path, a potential difference between two points of a part of the wrist that contacts the one voltage measuring electrode and a finger of the other hand that contacts the other one voltage measuring electrode is determined. Then, a bioimpedance between two points of the body is obtained based on the electric potential difference and the current.

Then, the body fat percentage is obtained based on the bioelectrical impedance and the body data input by the operation switch.

As described above, according to the present invention, the body fat meter can be configured to be portable so that it can be worn on the wrist, so that the body fat percentage can be easily measured.

A part or all of the operation switch may be connected to another one of the current electrodes or the other one of the voltage electrodes, or the other one of the current electrodes and the other of the voltage electrodes. When used together with one (claim 2), the number of members constituting the body fat meter can be reduced, and the product cost can be reduced.

When the body fat meter is used also as a wristwatch (claim 3), the body fat meter can be carried by wearing a wristwatch, and the body fat percentage can be easily measured on a daily basis. .

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a body fat meter according to the present invention will be described with reference to FIGS.

FIG. 1 is a view showing a body fat scale 1 according to one embodiment of the present invention.

FIG. 1A is a plan view of the body fat scale 1,
FIG. 1B is a rear view of the body fat meter 1.

The body fat scale 1 shown in FIG. 1 is constructed by incorporating a body fat scale into a wristwatch, and can also be used as a wristwatch.

The body fat scale 1 includes a wearing belt 2 and a body fat scale main body 10.

The wearing belt 2 is used to fix and support the body fat scale 1 on the wrist of the subject by winding it around the wrist of a person.

The body fat scale main body 10 is provided with a display section 11 and an operation section 20 on the front thereof.

The display section 11 includes a first display section 12 for displaying a body fat percentage as a measurement result, and a second display section 13 for displaying body data described later.

The display section 11 is switchable between the display of time and date displayed when used as a wristwatch.

The operation unit 20 is provided with an operation switch 21 for inputting physical data of the subject. The physical data of the subject includes items such as weight, height, age, and gender. In this example, the input of the body data is performed by operating the switch 21 and the electrode 2 described later.
It is configured so that numerical data can be increased or decreased by operating 8, 29.

The operation unit 20 is provided with a start switch 22 for starting the measurement of the body fat percentage. The start switch 22 is configured to be capable of being turned on. As will be described later, by turning on the start switch 22, it becomes possible to measure the bioimpedance necessary for measuring the body fat percentage. ing.

A second current electrode 28 corresponding to another one of the pair of current electrodes is provided on the left side surface of the body fat meter main body 10, and another pair of voltage electrodes is provided on the right side surface of the main body 10. One second voltage electrode 29 is provided.

Then, on the back of the main body 10, FIG.
As shown in FIG. 2, a first current electrode 26, which is one of a pair of current electrodes, and a first voltage measurement electrode 27, which is one of a pair of voltage measurement electrodes, are provided.

The first electrode 26 for current, the second electrode 28 for current, the first electrode 27 for voltage measurement, and the second electrode 29 for voltage measurement determine the body fat percentage together with the body data of the subject. This is for obtaining the bioimpedance necessary for the calculation.

Regarding the principle of measuring the bioelectrical impedance,
A description will be given based on FIG.

FIG. 2 is an equivalent circuit diagram for measuring the bioelectrical impedance. That is, FIG. 2 shows the body part of the subject whose bioimpedance is measured, and the current electrode 2
It is a figure which shows the equivalent circuit showing the connection relationship with each member, such as 6 and 28.

The first current electrode 26 and the second current electrode 28 are respectively brought into contact with two parts 31 and 33 of the subject's body.

A constant current power supply 36 is connected between the first current electrode 26 and the second current electrode 28.

The constant current power supply 36 conducts a current I having a constant current value between the first current electrode 26 and the second current electrode 28. Thereby, in the body of the subject, a portion 31 with which the first current electrode is in contact,
A current path through which a constant current I is conducted is formed between the second current electrode and the portion 33 contacted.

The first voltage measuring electrode 27 and the second voltage measuring electrode 29 are connected to two portions 3 of the subject's body.
2, 34 are contacted with each other.

A voltmeter 37 for measuring a potential difference V between these two electrodes is connected between the first voltage measuring electrode 27 and the second voltage measuring electrode 29.

The voltmeter 37 measures a potential difference V caused by a current I flowing through the bioelectrical impedance 35 between the parts 32 and 34.

The bioelectrical impedance (= V / I) between the body parts 32 and 34 of the subject can be obtained from the current I and the potential difference V. When the bio-impedance is obtained, the body fat percentage is calculated from the impedance and the body data input by the operation switch 21 according to a well-known calculation formula.

In order to accurately measure the bioelectrical impedance, a portion 31 that contacts the first current measuring electrode 26 and a portion 32 that contacts the first voltage measuring electrode 27 are close to each other. It is necessary that the part 31 contacting the current electrode 28 and the part 34 contacting the second voltage measuring electrode 29 are close to each other.

The constant current power supply 36 and the voltmeter 37 shown in FIG.

The body fat meter 1 is provided with a start switch 2
2 to turn on the current I from the constant current power supply 36.
Is configured to be output. As a result, the constant current power supply 36 can be arbitrarily operated only when the body fat percentage is to be measured.
This is preferable from the viewpoint of preventing unnecessary power consumption of the battery for operating the battery 6.

The body fat meter 1 has a second current electrode 28 and a second voltage measurement electrode 29 connected to the main body 10.
As described above, the electrodes 28,
29 may be provided on the front of the main body 10.

In this example, the second current electrode 28
The second voltage measuring electrode 29 is also used as a key for increasing / decreasing numerical data of body data. That is, the electrode 2
The electrode 8 is used as a so-called increment key for increasing the numerical value, and the electrode 29 is used as a so-called decrement key for decreasing the numerical value.

As described above, when the electrodes 28 and 29 are also used as the operation switches 21, the number of members constituting the body fat meter can be reduced, and the product cost can be reduced.

The selection of whether to use the electrodes 28 and 29 as an increment key or a decrement key or as a bioimpedance measuring electrode can be set by the operation switch 21.

Further, an independent increment key and decrement key may be provided on the operation unit 20.

In this embodiment, the body fat scale 1 is also used as a wristwatch. However, the whole body fat scale 1 is not used as a wristwatch, and the whole body fat scale 1 is an independent body fat scale. It may be.

The body fat meter 1 having the above configuration is used as follows.

First, as shown in FIG. 3, the body fat scale 1 is worn on the left wrist of the subject.

As a result, the first current electrode 26 and the first voltage measurement electrode 27 are brought into contact with two adjacent parts of the subject's left wrist. The portion that contacts the current electrode 26 corresponds to the portion 31, and the portion that contacts the voltage measurement electrode 27 corresponds to the portion 32.

Next, when the start switch 22 is turned on as shown in FIG. 4, a constant current can be output from the constant current power supply 36.

Next, as shown in FIG. 5, when the operation switch 21 is operated by the right hand, the input of the body data is started. Then, as shown in FIG. 6A, the increment of the numerical data is performed by the electrode 28.
In addition, the numerical data is decremented by the electrode 29 as shown in FIG. Thus, the physical data is input.

By operating the operation switch 21,
The electrodes 28 and 29 are brought into a state where the bioimpedance can be measured.

Next, as shown in FIG. 7, the index finger of the right hand is brought into contact with the second current electrode 28, and the right thumb is brought into contact with the second voltage measurement electrode 29. The index finger of the right hand contacting the current electrode 28 hits the part 33,
The right thumb in contact with the voltage measurement electrode 29 corresponds to the part 34.

The middle finger of the right hand is brought into contact with the second current electrode 28 instead of the right forefinger, and the right index finger is brought into contact with the second voltage measurement electrode 29 instead of the right thumb. The contact may be made with any two fingers of the right hand that can make contact with the electrode 28 and the electrode 29. As a result, the second current electrode 28 and the second voltage measurement electrode 29 come into contact with two adjacent parts of the subject's right hand.

Then, the current output from the constant current power supply 36 incorporated in the body fat meter 1 contacts the part 33 through the body of the subject from the part 31 contacting the first current electrode 26. Conduction to the second current electrode 28 will be achieved.

Then, in the body fat meter 1, the bioimpedance between the portion 32 contacting the first voltage measuring electrode 27 and the portion 34 contacting the second voltage measuring electrode 29 is determined. The body fat percentage is calculated based on the bioelectrical impedance and the body data.

The obtained body fat percentage is displayed on the first display section 12.

As described above, the body fat meter of the present invention is formed so as to be worn on the wrist so that the body fat percentage can be measured. By doing so, the body fat percentage can be easily measured.

[0059]

As described above, the body fat meter according to the first aspect has an effect that the body fat percentage can be easily measured on a daily basis regardless of the place.

According to the second aspect of the present invention, the number of members constituting the body fat meter can be reduced, and the cost of the product can be reduced.

The invention according to claim 3 has an effect that the body fat meter can be carried by wearing a wrist watch, and the body fat percentage can be easily measured on a daily basis.

[Brief description of the drawings]

FIG. 1 is a diagram showing a body fat scale.

FIG. 2 is a diagram illustrating an equivalent circuit of a body fat meter.

FIG. 3 is a diagram showing a state in which a body fat meter is mounted on a wrist of a left hand of a subject.

FIG. 4 is a diagram showing a state in which the body fat scale is operated by a right hand.

FIG. 5 is a diagram showing a state in which the body fat scale is operated by a right hand.

FIG. 6 is a diagram showing a state of an operation for measuring a body fat percentage.

FIG. 7 is a diagram showing a state of an operation for measuring a body fat percentage.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body fat meter 2 Wearing belt 10 Body fat meter main body 11 Display part 12 First display part 13 Second display part 20 Operation part 21 Operation switch 22 Start switch 26 First current electrode 27 First voltage electrode 28 Second current electrode 29 Second voltage electrode 31 Body part in contact with first current electrode 32 Body part in contact with first voltage electrode 33 Body part in contact with second current electrode Part 34 Body part in contact with the second voltage electrode 35 Bioimpedance 36 Constant current power supply 37 Voltmeter

Claims (3)

[Claims] 1. A pair of current electrodes for forming a current path by conducting a constant current through the body of a subject, and a pair of voltage measurement for measuring a potential difference between two points in the current path. Electrode, and an operation switch for inputting the body data of the subject, wherein one of the electrodes for current and one of the electrodes for voltage measurement are on the back of the body of the body fat meter. The data input switch is provided on the front side or the side, and the other side of the current electrode, the other side of the voltage electrode and the data input switch are provided on the front side or the side. A body fat scale, characterized in that: 2. A part or all of the operation switch may be connected to another one of the current electrodes or another one of the voltage electrodes, or the other one of the current electrodes and the other of the voltage electrodes. 2. The body fat meter according to claim 1, wherein the body fat meter is shared with one. 3. The body fat meter according to claim 1, wherein the body fat meter is also used as a wristwatch.