JP3087463U - Body fat measuring device with weight scale - Google Patents

Abstract

(57) [Problem] To provide an apparatus for measuring body fat with a weight scale which can avoid the influence of humidity and roughness of skin and can accurately measure body fat. According to the present invention, two pairs of electrodes (2, 3) form a current path and have a function of a measuring electrode. The capacitance C value is fixed by the RC chattering principle, and the measured chattering frequency is measured. While calculating the impedance value between each electrode circuit respectively, while adding the impedance value from the left foot rear end through the body to the right foot front end to the impedance value from the left foot front end through the body to the right foot rear end of these circuits The impedance value from the front end of the left foot to the rear end of the left foot is subtracted, the impedance value from the front end of the right foot to the rear end of the right foot is subtracted, and the obtained impedance value is divided by 2, thereby obtaining the impedance value at each contact electrode site. , The accurate body impedance value can be obtained, and the effects of skin humidity, roughness, contact area, etc. can be avoided. Body fat level is required.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a body fat measuring device with a weight scale, which can accurately calculate body fat without being affected by humidity and roughness of a body surface, a contact area, and the like, and automatically adjusts body weight based on a user's weight. The present invention relates to a body fat measuring device with a weighing scale capable of retrieving user-related data stored in a memory and performing extremely convenient and very accurate measurement.

[0002]

[Prior art]

 Obese people have various health problems as their weight increases, such as cardiovascular and physical weakness. Although the emphasis is increasingly on obesity, obesity cannot be simply judged by the external physique.For example, a person's inborn skeleton is strong, or a person's muscles are strong, so those people weigh less Because they are heavier than people, it is often wrong to judge by appearance.

[0003] For that reason, vendors have developed various types of body fat measurement devices, and the operation principle of the devices is generally that as shown in FIG. (51) By pressing against (52), the current path forming electrode (511) of one electrode pair (51) and the current path forming electrode (521) of another electrode pair (52) are pressed. Each of them forms one circuit with the body, and uses the measuring electrode (512) of one electrode pair (51) and the measuring electrode (522) of the other electrode pair (52). The voltage can be measured by using the fact that the current attenuates with time in the circuit described above, and the change in voltage can be measured, and thus the impedance can be obtained. When the impedance value is transmitted to the CPU and calculated, the fat value of the body is calculated as Obtainable.

However, in this measurement method, in actual use, it is necessary for the CPU to separately input data necessary for calculating body fat, for example, height and weight. The use of this measurement method is extremely inconvenient and cumbersome, as it is a variable item and requires the user to separately weigh before measuring body fat.

[0005] Then, for example, a weight scale is connected to a body fat measuring device, and while the two feet are standing on the device and the soles of the feet are pressed against the two electrode pairs, the weight is measured, and the height and age are measured. The body fat value can be obtained by calculating the CPU by combining the data separately input by the user and the CPU, and a body fat measuring device with a weight scale that can easily determine whether the user is obese or not is known. Have been.

[0006]

[Problems to be solved by the invention]

 However, the prior art described above has the following disadvantages. <B> In addition to weight, data required during CPU calculation, such as height and age, must be entered before each use. <B> Aside from whether or not the body fat measurement device can measure body weight, the voltage is measured by the two current path forming electrodes and the measurement electrode, and the voltage is attenuated with time. Can be measured by measuring the change in body fat, but the impedance can be obtained.However, the measured body fat value is larger than the actual body fat value of the body due to the effects of the humidity, roughness, and contact area of the skin in contact with the electrodes. There was a discrepancy.

According to the present invention, two pairs of electrodes are provided mainly on the soles of the soles, and all two contact points of the two pairs of electrodes are both current path forming electrodes and measurement electrodes. In addition, four circuits are formed, and by the calculation of the CPU, various types of impedance on the skin can be eliminated to prevent the impedance value of the body from being affected by the humidity, roughness, contact area, etc. of the skin. An object of the present invention is to provide a body fat measuring device with a weight scale that can accurately calculate a body fat value by obtaining an accurate impedance value of the body.

[0008] The present invention also provides that the body fat measuring device with a weighing scale inputs basic data of different users before use and stores the data in a memory, and also stores the measured weight together. When the user stands on the body fat measuring device with the weighing scale next time, the device automatically searches for data in close proximity to the weight measured by the user, calculates body fat, and calculates the body fat every time. Another object of the present invention is to provide a body fat measuring device with a weight scale, which eliminates the need to input similar data to the body.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, claim 1 of the present invention is mainly provided with a setting selection button and an up / down adjustment button for inputting relevant data on the main body. It has a display to display, and the input data is stored in the memory via CPU, and two pairs of electrodes are provided in the main body, and these four electrodes respectively press the front and rear ends of the soles of the right and left feet. In a fat measuring device with a weight scale that provides a contact and transmits an impedance value obtained by these electrodes to a CPU for calculation, the two electrodes of the two-electrode pair are electrodes forming a current path. It also has the function of a measuring electrode, which fixes the capacitance C value by the principle of RC chattering and derives the impedance value between each electrode circuit by the measured chattering frequency. Calculate the impedance values from the front left end of the circuit to the rear end of the right foot through the body to the impedance values from the rear end of the left foot through the body to the front end of the right leg. By subtracting the impedance values from before and after subtracting the impedance values from the front end of the right foot to the rear end of the right foot, the impedance values obtained are divided by 2, thereby eliminating the impedance values at each contact electrode site. Body with accurate body impedance value, avoiding being affected by variables such as skin humidity and roughness and contact area, and thus obtaining an accurate body fat value. The gist is that it is a fat measuring device.

[0010] Further, according to the present invention, the memory can store personal data necessary for calculating a body fat value inputted before the user, and can store the personal data required for the next use. In addition, according to the weight measured by the weight measuring device, the CPU searches for the relevant data of the user within a predetermined tolerance, so that it is not necessary to input the data for each use, which is more convenient. 2. The body fat measuring device with a weight scale according to claim 1, wherein the device has practicality.

[0011]

[Embodiment of the invention]

 As disclosed in FIGS. 1 and 2, in the present invention, a display (11) is provided on the main body (1), and a power switch (12), a setting selection button (13), and an up / down adjustment button (14) (15) are respectively provided. ) Is provided on the main body (1), while two sets of electrode pairs (2) and (3) are provided at predetermined positions of the main body (1), and the electrode pairs (2) and (3) are provided with two electrodes (21) and (22), respectively. ), (31) and (32), and a CPU (4) connected to a display (11) inside the main body (1). The CPU (4) is provided with a power supply ( 41), a weight measuring device (42), and a memory (43), and a power switch (12), a setting selection button (13), and an up / down adjustment button (14) provided on the main body (1). ) (15) and the electrode pairs (2) and (3) are all input to the CPU (4). Rukoto can.

As shown in FIG. 3, the two electrodes (21), (22), (31), and (32) of the two-electrode pair (2) and (3) are current path forming electrodes, measurement electrodes, and are used. When a person presses the electrodes at the front and rear ends of the soles of the two feet, respectively, the electric capacity C value is fixed by the RC chattering principle, and the following impedance value can be obtained from the measured chattering frequency.

[0013] contact impedance of r _1, the impedance R ₁ connected in series impedance R _L before formed behind the front end of the left leg between the back of the front end and the electrode of the left foot (21). The contact impedance r ₂ between the back of the rear end and the electrode of the left foot (22), the impedance R ₂ and impedance R _L after formed by series connection on the back of the rear end of the left foot. Contact impedance r _3, the impedance R ₃ impedance formed by serially connecting R _R before the back of the front edge of the right foot between the back of the front end and the electrode of the right foot (31).

After the impedance R _R formed by connecting the contact impedance r ₄ between the rear end of the sole of the right foot and the electrode (32) to the impedance R _{4 at} the rear end of the sole of the right foot in series. Body impedance R _B. Here, one circuit is formed between the electrodes (21) and (22) through the front and rear ends of the sole of the left foot, and one circuit is formed between the electrodes (31) and (32) through the front and rear ends of the sole of the right foot. The front end of the sole of the left foot and the rear end of the body and the sole of the right foot also form another circuit between the electrodes (21) and (32). The rear end of the sole and the front end of the body and the sole of the right foot form another circuit, each of which is described below.

[0015] (A) R _L before + R _L after (B) R _R before + R _R after (C) R _L before + _{R B} + R R after (D) R _L after + _{R B} + R R before addition, following the previously described if mathematized as can be obtained R _B.

[0016] ((C) + (D) - (A) - (B)) / 2 = (R L before + _{R B} + R R After + R _L after + _{R B} + R R before -R _L before -R _L after -R use of _R before after _{-R R) / 2 = (2R} B) / 2 = R B this invention, as shown in FIG. 4, the power at the power switch (12) to the on power supply (41) If it is the first use since the start of supply, the display (11) enters the main screen by pressing any one button. At this time, there is no measurement function, and the setting is selected. After pressing the button (13), the display (11) enters the input mode. After inputting personal data such as height, age, and gender by the up / down adjustment buttons (14) (15), the user enters the main unit (1). ) Standing on it, the weight of the user is measured by the weight measuring device (42) of the main body (1). In addition, the measurement results are also displayed on the display (11) and stored in the memory (43), and at the same time, the CPU (4) uses the impedance R _B obtained from the electrode pairs (2) and (3) and uses The body fat is calculated by combining the data such as age, gender, height and weight which the user has input and memorized, and the calculated result is displayed on the display (11) to inform the user.

If the user is not in the first use, the CPU (4) stands directly on the main body (1) and measures the weight of the user after the weight measuring device (42) measures the weight of the user. It automatically searches and displays the personal data corresponding to the weight within a predetermined tolerance in the memory (43) and calculates and displays the body fat value. On the other hand, if the weight record in the memory (43) has more than one record close to the measured weight, the user's data can be called up by pressing the up / down adjustment buttons (14) (15). If the user's weight has increased or decreased to exceed the tolerance tolerance, or if no personal data has been entered, the CPU (4) will return to the display (11) if no relevant data is found in the memory (43). ) Displays only the weight data and informs the user to enter the relevant data again.

[0018]

[Effect of the invention]

 The present invention has the following effects. <A> This invention makes use of the fact that the two contacts of a two-electrode pair are both current path forming electrodes and measuring electrodes, and that four circuits are formed between each electrode and calculated by the CPU. In addition, an impedance that causes errors such as skin humidity, roughness, and contact area can be eliminated, and a very accurate body impedance value can be obtained. As a result, a user's body fat value can be accurately calculated. <B> In the present invention, the CPU can combine the memory to record the weight and the personal data input by the user, and search the stored related data based on the measurement result obtained by combining the weight measuring device. The recall eliminates the need for the user to enter personal data for each use or manually recall the personal data.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a block diagram of the present invention.

FIG. 3 is a schematic diagram of a circuit formed by each electrode of the present invention.

FIG. 4 is a flowchart of the present invention.

FIG. 5 is a schematic diagram of a conventional circuit formed by each electrode.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body 11 Display 12 Power switch 13 Setting selection button 14 Up adjustment button 15 Down adjustment button 2 Electrode pair 21 Electrode 22 Electrode 3 Electrode pair 31 Electrode 32 Electrode 4 CPU 41 Power supply 42 Weight measuring device 43 Memory 51 Electrode pair 511 Electrode 512 electrodes 52 electrode pairs 521 electrodes 522 electrodes

Claims (2)

[Utility model registration claims] 1. A main body is provided with a setting selection button for inputting related data and an up / down adjustment button, and has a display for displaying the input data and the measurement result. And two electrodes are provided in the main body, and these four electrodes provide pressure contact between the front and rear ends of the soles of the right and left soles, respectively, and the impedance values obtained by these electrodes are provided. Is transmitted to the CPU to perform the calculation, the two electrodes of the two-electrode pair are electrodes forming a current path and also have a function of a measuring electrode, which is electrically operated by the RC chattering principle. The capacitance C value is fixed, and the impedance value between each electrode circuit is calculated based on the measured chattering frequency. Add the impedance value from the rear end of the left foot to the front end of the right foot through the body to the impedance value from the rear end of the right foot to the rear end of the right foot, subtract the impedance value from the front end of the left foot to the rear end of the left foot, and The impedance value obtained after subtracting the impedance value up to the back end is divided by 2, thereby eliminating the impedance value at each contact electrode site, so that an accurate body impedance value is obtained, and the skin humidity and roughness A body fat measuring device with a weight scale, characterized in that it is possible to avoid being influenced by variables such as contact area and the like, and to thereby obtain an accurate body fat value. 2. The memory can store personal data necessary for calculating a body fat value inputted before the user, and when using the next time, the weight measured by the weight measuring device. This allows the CPU to search for relevant data of the user within a predetermined tolerance, thereby eliminating the need to enter data each time, thus making it more convenient and practical. The body fat measuring device with a weight scale according to claim 1, characterized in that: