JPH11128196A - Scale equipped with adipometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To selectively make the single measurement of body weight or body fat or body fat measurement linked without body weight measurement. SOLUTION: This scale has a flat shape scale main body 1 having a built-in body weight measuring part for measuring body weight value and an adipometer 2 removably attached to the main body 1. The adipometer 2 has a casing structure wherein a display part and various setting switches 11 are arranged in the center, the casing structure having a handle part 14 with pairs of electrodes 16-19 arranged on both sides. Inside a casing 9, a measurement means for measuring in-body impedance calculated when a subject holes the handle part 14 in both hands, a data input part connected the data output part 7 of the main body 1 via input and output terminals 6a, 13 while being installed in the main body 1 to incorporate the body weight measured value measured with the main body 1, and a CPU for computing the body fat value of the subject according to the in-body impedance and the body weight value incorporated and for displaying the body fat value obtained on the display part are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scale with a body fat scale.

[0002]

2. Description of the Related Art In the case of a flat-type household weighing scale in which a display unit is provided in a part of a weighing platform, a subject, particularly an obese subject, tries to read the measured value on the weighing scale. In this case, the body is disturbed, and the display becomes difficult to see on its own. Also, a person with myopia is difficult to see because the display is also distant similarly.

[0003] On the other hand, in a large scale, the display section is arranged on a post standing on the top of the table, so that the subject can easily see it regardless of the body shape or visual acuity. But,
This type of weighing scale is large and suitable for public baths and medical insurance institutions, but is too large for general households and requires a large storage space.

[0004] Further, in the case of measurement in a public place, particularly, a woman or the like sometimes wants to keep her weight etc. from shame, but it is easy for another person to peep easily.

[0005] As a body weighing device related to body weight, a body fat meter using a weak current is known. This body fat meter measures the body impedance due to the weak current flowing between both hands or both feet of the subject, and attempts to measure body fat by the change in the body impedance according to the moisture and fat content of the subject. Is what you do.

When measuring body fat by a weak current,
By giving various coefficients to the body impedance, it is possible to convert to an accurate body fat value. The coefficients include weight, height, age, gender, limb length, and the like. Of the various coefficients, especially in the case of adults, body weight is the largest factor of variation, and is significantly involved in the increase and decrease in body fat.

[0007] Weight and body fat are related as described above, but they are not necessarily inseparable, and there are two types, one in conjunction with a weight scale and one used alone.

[0008] As the former body fat scale attached to a weight scale, for example, as disclosed in Japanese Patent Publication No. 5-49050, a body fat is measured between both feet,
As disclosed in Japanese Patent Publication No. 35, there has been proposed a device for measuring body fat between both hands and both feet.

The latter body fat meter is disclosed, for example, in JP-A-7-5
As shown in Japanese Patent Application Publication No. 1242, this is a portable type, in which electrode pairs are arranged on grip portions provided on both sides of a display portion, and a body weight is input based on a measured value obtained by numerical input. Some are converted to fat and displayed.

However, such a conventional body fat meter has the following technical problems.

[0011]

First, according to the technique disclosed in Japanese Patent Publication No. 5-49050, although the display is of a flat type and compact, it is hard to see the display like the flat type weighing scale described above. . In addition, the measurement site is a foot, it is difficult to measure unless the foot is placed on an accurate position, and further, it can be measured only in a barefoot state.

The technique disclosed in Japanese Patent Application Laid-Open No. 7-12635 is not suitable for a household scale because it has a display section on a post and is large and has complicated functions. In addition, especially when the grip is held, the weight is applied to the grip, so that the weighing is incomplete, and the measurement of the weight and the measurement of body fat between both hands must be performed separately.

In the technique disclosed in Japanese Patent Application Laid-Open No. Hei 7-51242, since the body fat scale is used alone, the input operation of the weight value is troublesome. Is not always correct,
It is difficult to get accurate weight values.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to be used as a normal compact flat-type body fat meter for household use, which can be used for measuring body weight and body fat independently. Another object of the present invention is to provide a body scale with a body fat meter that can selectively measure body fat linked to body weight measurement.

[0015]

In order to achieve the above object, the present invention provides a flat weighing scale main body having a built-in weight measuring unit for measuring a weight value, and a detachably mounted main body of the weighing scale main body. A body fat scale with a body fat meter, wherein the body fat meter has a display portion and various setting switches arranged in the center, and a grip portion in which a pair of electrodes are arranged on both sides. A casing structure, inside the casing, measuring means for measuring an in-vivo impedance required when the subject grips the grip portion with both hands; and A data input unit connected to a data output unit of the weighing scale main body, the data inputting unit taking in the weight measured value measured by the weighing scale main body; Calculating a body fat values of the subject, the obtained body fat value is provided and a calculation means for displaying on the display unit. According to the weight scale with a body fat meter configured in this manner, it can be usually used as a flat-shaped weight scale, and the measured weight value is taken into the body fat scale via data input means, and the weight is displayed on the display unit. The value can be displayed. Thereafter, if the subject disconnects the body fat scale from the body of the weight scale, the weight value can be seen up close. Furthermore, by holding the grips on both sides of the casing with both hands in the separated state, impedance in the body can be measured, converted into body fat value based on the weight value already taken in the body fat meter as data, and displayed on the display unit be able to. When the body fat meter is separated from the body of the weight scale and used alone, the body fat can be measured by inputting a weight value and performing a gripping operation. Further, in the present invention, the weight scale main body may be provided with a display unit for displaying only the weight. According to this configuration,
When the body fat scale is removed and carried to one, it can be used alone as a weight scale.

[0016]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 and 2 show an embodiment of a weight scale with a body fat meter according to the present invention. FIG. 1 shows an external appearance, and FIG. 2 shows an internal circuit thereof.

The weighing scale shown in these figures is composed of a flat type weighing scale main body 1 and a body fat scale 2 detachably mounted on the main body 1.

The weight scale main body 1 includes a housing 3 serving as a weight mounting surface formed in a thin rectangular shape, and a body fat scale 2 is detachably mounted on an installation portion 1a formed one step lower at the front side. Is done.

At the center of the installation part 1a, a connection step 6 slightly higher than other parts is projected, and a plurality of output terminals 6a for external connection are exposed on the upper surface of the step 6.

As shown in FIG. 2, the internal circuit of the weighing scale main body 1 is composed of a normal load cell type weight measuring section 4 connected to the upper surface of the flat housing 3 as a weighing table and a weight measuring section 4. A CPU 5 for taking in the measured values and calculating a weight value, and a data output unit 7 arranged at the center of the installation unit 1a and outputting the measured weight value to the body fat meter 2 through the output terminal 6a. , A power switch 8 provided at the rear end of the housing 3 and the like.

The power source of the weighing scale main body 1 may include a battery, may be connected to a commercial power source, or may be a rechargeable battery type. In the example shown in FIG. 2, there is no power supply on the scale
In the figure, two terminals are used for data communication (input / output), and the other two terminals are terminals for supplying power from the body fat meter side. In addition, it is desirable to add an auto power-off function for automatically turning off the power when there is no change in the input of the weight value or a fixed time.

The body fat scale 2 has a width and a thickness that can be grasped by hand, and has an elongated casing 9 having the same length as the width of the body 1 of the weight scale, and a display opened at the center of the casing 9. A window 10 and a plurality of various setting switches 11 and a power switch 12 arranged in a row below the display window 10 are provided.

On both sides of the casing 9 are gripping portions 14 which can be gripped by the measurer with left and right hands, and the gripping portions 14 are provided with belt-like electrodes 16, 17, 18, and 19 in pairs in a circling state. It has an external shape.

Each setting switch 11 is used to interactively set an initial set value, in accordance with a menu displayed on the display window 10.
For example, the date, the code number, the height, the age, the gender-specific data, the weight value, etc. of the subject are input.

The electrodes 16 to 19 are made of a metal such as copper, aluminum or stainless steel, a conductive paint, a conductive plastic mixed with carbon or metal powder, or the like.

Further, a notch 13 is formed at the center of the lower surface of the casing 9 so as to be fitted to the step 6 on the main body 1 side.
An input terminal, which will be described later, which is connected to the terminal a is arranged to face each other, and both terminals conduct when installed on the main body 1, so that a weight value can be taken in the installed state.

In order to maintain a good connection between the terminals, a magnet (not shown) is embedded in the lower portion on both sides of the casing 9 (a position corresponding to the broken line of the installation portion 1a in FIG. 1A). , Secure connection between the terminals is possible.

Then, as shown in FIG. 1 (b), when the body fat scale 2 is attached to the installation section 1a, it has the same function as a normal home-use flat scale.

Further, as shown in FIG. 1 (a), the body fat scale 2 is detached from the installation section 1a, and the subject is gripped by the grip sections 1 on both sides.
By measuring 4 while simultaneously holding it with the left and right hands, it becomes possible to use it as a body fat meter in addition to displaying the weight value.

When measuring only body fat without standing on the body 1 of the scale, enter the code number of the subject or, for the first measurement, first enter various data. By holding the grips 14 on both sides, body fat is displayed.

The body fat scale 2 is powered by a battery or a pair of output terminals 6a of the weight scale body 1 as power supply terminals while the body fat scale 2 is mounted on the body scale body 1. It is possible to adopt a rechargeable battery system which is connected to a total of 2 and receives power from the battery.

As shown in FIG. 2, the internal circuit of the body fat meter 2 includes an electrode unit 20 having the electrodes 16 to 19,
An impedance measuring circuit 21, a CPU 22 for giving an instruction signal to the impedance measuring circuit 21, calculating a body fat value by taking a measured value, and a display unit 23 such as a liquid crystal for displaying the calculation result on the display window 10. An input unit including the various setting switches 11; a storage unit 24 for storing personal data; a calibration value of weight and body fat for each personal data; a date and time; and a series of related data; A data input unit 25 connected to the data output unit 7.

When the input terminal 13a provided at the input end of the data input unit 25 is connected to the output terminal 6a of the main unit 1, the weight value measured by the main unit 1 is fetched and temporarily stored. The value is displayed on the display unit 23.

The impedance measuring circuit 21 includes a CPU 2
2 is applied to the left and right outer electrodes 16 and 19 of the electrode section 20 through the sine wave generation circuit 26 and the constant current circuit 27 in response to the control signal from the control section 2. Pour between both hands of the subject.

The weak current flowing to the person to be measured is detected from the inner electrodes 17, 18, and the operation amplifier 28 of the impedance measuring circuit 21, the band-pass filter 29,
The measurement data is supplied to the CPU 22 via the detection circuit 30 and the A / D converter 31.

The CPU 22 receives the measurement data, calculates a body fat value based on an arithmetic expression based on a built-in program, displays the result on the display unit 23, and stores the corresponding personal data in the storage unit 24. The value is stored in the address together with the date data as an updated value.

Here, the calculation formula of body fat includes the following formula based on a well-known report by Lukasky et al.

Bone + muscle mass = 0.4936 × height ² / resistance (internal impedance) + 0.3332 × body weight + 6.4
93 fat (%) = (1− (bone + muscle mass) / body weight) · 10
0 Further, as an expression to be obtained from the body density, there is the following expression based on a report by Brosek et al.

Body density = 1.154−0.0841 × body weight × resistance / height ² fat (%) = (4.95 / body density−4.5) · 100 There are various methods, such as introducing a correction coefficient depending on the length of the limb. However, all of the methods are well-known, and some of them rely on coefficients unique to each company.

Furthermore, in addition to the above, if the body impedance can be measured, the body fat, lean mass, water content, basal metabolism, etc. can be converted in addition to the body fat percentage. Of course, these values can be calculated.

Further, according to the software used, a comparison value between the previous data and the current data of the subject can be displayed, and the rate of increase or decrease in fat and body weight can be displayed.

Then, the CPU 22 calculates the body fat percentage from the temporarily stored weight value by substituting it into the above-mentioned equation together with the body impedance. When not linked, the body fat percentage is calculated by inputting the weight value or using the previously measured data.

Next, a description will be given of a measurement procedure and a use form in the above configuration.

[0044] First, the power switches 8 and 12 of the body scale 1 and the body fat scale 2 are both turned on.

[0045] In this state, as shown in FIG. 3A, when the subject gets on the scale 1, the weight value is displayed on the display unit 23. In this case, it can be used exclusively as a normal flat type scale.

[0046] After the weight measurement, the weight value is displayed on the display unit 23. At the same time, this weight value is taken into the body fat meter 2 and temporarily stored. After this state, FIG.
As shown in FIG. 7, the body fat scale 2 can be separated from the main body 1 and can be viewed at hand. The power of the main body 1 is automatically turned off.

[0047] Next, the user sets the setting switch 11
Operate to input the set value. When the initial setting of the subject is made in advance, the user inputs only the code number of the subject, then switches to the body fat measurement mode, and holds the electrodes 16 to 19 with both hands of the subject. For example, the body impedance is measured, and the body fat is calculated based on this value and the temporarily stored weight value, and the value is displayed on the display unit 23.

[0048] After use, the body fat scale 2 is fixed to the installation section 1a again, and then each power switch is turned off. When the auto power-off function is added, each power supply is automatically turned off when there is no input or data change for a certain period of time, or after a certain period of time has elapsed after the weight value becomes zero.

[0049] If there is no signal from the main unit 1,
For example, when the power is turned off, or as shown in FIG.
When the body fat meter 2 is used independently, the mode is switched to the body fat measurement mode, and only the body fat can be measured by inputting the weight value.

FIGS. 4 and 5 show another embodiment of the present invention. In the drawings, the same portions as those in the above-described embodiment are denoted by the same reference numerals, and the description will be made using the new reference numerals only for the newly added portions.

The function of the body fat meter 2 in the figure is the same as described above. On the other hand, a display window 30 is formed on the upper surface of the casing 3 of the weighing scale main body 1 in front of the footrest position, and the CPU 5 displays the measured weight value on the display unit 31 facing the display window 30. At the same time, the same weight value is output to the body fat meter 2 through the data output unit 7 and the output terminal 6a connected thereto.

In this embodiment, the body fat scale 2 and the body scale 1 have the same weight display function, but the body fat scale 2 is portable and can be removed. It can be used as a weighing scale alone as an auxiliary function when it is taken away, so that it is suitable for preventing practical problems.

[0053]

According to the weight scale with a body fat scale according to the present invention, it can be usually used as a weight scale in the form of a compact flat type. The body fat can be measured by separating and holding the grips on both sides of the casing with both hands.

At this time, the weight value temporarily stored in the body fat meter can be used as data for converting into body fat.
An accurate body fat value is obtained.

After the weight measurement, the data can be viewed at hand, so that the weight and body fat can be easily confirmed and the confidentiality can be improved irrespective of the body shape and the visual acuity.

Further, since the body fat meter can be used alone as a portable device, the usability according to the purpose and purpose is increased.

[Brief description of the drawings]

1 (a) and 1 (b) are perspective views showing one embodiment of a body fat scale with a body fat meter according to the present invention, showing a detached and attached state of the body fat meter.

FIG. 2 is a block diagram showing an internal circuit of the body scale with a body fat meter;

FIGS. 3 (a) and 3 (b) are explanatory views showing a usage pattern of a body scale with a body fat meter.

FIG. 4 is a perspective view showing another embodiment of the present invention.

FIG. 5 is a circuit block diagram of the main body of the weight scale.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Weight scale main body 1a Installation part 2 Body fat meter 4 Weight measurement part 7 Data output part 25 Data input part 6a Output terminal 13a Input terminal 9 Casing 10, 23 Display part 11 Setting switch 14 Handle part 16-19 Electrode pair 21 Measurement Means (in vivo impedance measurement circuit) 22 Calculation means (CPU) 30, 31 Display unit

Claims (2)

[Claims] 1. A weight scale with a body fat scale, comprising: a flat-shaped weight scale main body having a built-in weight measurement unit for measuring a weight value; and a body fat scale detachably attached to the weight scale main body. The body fat meter has a casing structure in which a display unit and various setting switches are arranged at the center, and a grip unit having a pair of electrodes arranged on both sides is provided. Measuring means for measuring the impedance in the body which is obtained by gripping the grip portion with both hands, and connected to a data output portion of the weight scale main body while being installed in the weight scale main body, and measuring with the weight scale main body Data input means for taking the obtained weight measurement value, the body impedance value, the body fat value of the subject is calculated based on the weight value taken in by the data input means, and the obtained body fat value Body fat meter with body weight meter, characterized in that a calculation means to be displayed on the display unit. 2. The weight scale with a body fat meter according to claim 1, wherein the weight scale main body is provided with a display unit for displaying only a weight value.