JP2005111265A - Body composition measuring apparatus and measuring method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a body composition measuring apparatus structured to prevent poor contact of an electrode to enhance accuracy in measuring human body impedance and to improve a sanitary state by constituting an electrode moving device on a placing base surface of the body composition measuring apparatus, and controlling an electrode to contact a foot sole center recessed part of a subject, and to provide a measuring method. <P>SOLUTION: This body composition measuring apparatus is provided with an impedance measuring part 20 and a control device 13 for processing information inputted from a scale 2 and information inputted from an input device 15. Particularly the impedance measuring part 20 has the electrode moving device 21 controlling electrodes 10c, 10d, 22c, 22d on both foot soles to freely movable upward/downward from the placing base surface 2a of the scale. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a body component measuring instrument that measures body components of each part of the human body, and in particular, an electrode on the sole configured on the mounting surface of the body component measuring instrument is measured after the weight of the subject is measured. The present invention relates to an electrode moving device that controls to be able to contact a central recess on the back side.

  In general, a body component measuring device is configured to pass a minute current through a human body and measure and analyze an impedance which varies depending on a human body part, and various types of measuring devices have been developed. An example of a conventional body component measuring device will be described with reference to FIGS.

  The body component measuring instrument 1 has an approximately L shape, and a weight scale 2 is provided at the bottom. The weight scale 2 includes a mounting surface 2a for measuring the weight of the subject, and the base surface 2a and the electrode handles 8a and 8b are provided with electrode portions 10 and 22 in contact with both feet and both hands. The electrode section is composed of sole electrodes 10c, 10d, 22c and 22d formed on the mounting surface 2a and palm electrodes 10a, 10b, 22a and 22b formed on the electrode handles 8a and 8b.

  The electrodes on the sole are made up of electrodes 10c and 10d for flowing current and electrodes 22c and 22d for measuring voltage, and the palm electrode is made up of electrodes 10a and 10b for flowing current and voltage measuring It consists of electrodes 22a and 22b. FIG. 2 is a block diagram of the body component measuring instrument 1, and the eight electrodes 10 a, 10 b, 10 c, 10 d, 22 a, 22 b, 22 c, and 22 d that are in contact with the left and right limbs are connected to the electrode exchange device 19. The electrode exchange device 19 is connected to the control device 13 through the current supply device 11 and the voltage measurement device 12. The control device 13 includes a microcomputer and has a storage device 14 for storing various data.

  Further, the display combined screen 7 shown in FIG. 1 includes an input device 15 and a display device 16 inside in terms of electric circuit, and is connected to the control device 13 via an input / output control device 17 for controlling them. . On the other hand, the weight measured by the weight scale 2 is configured to be sent to the input / output control device 17 and the control device 13.

  In the figure, 18 is a power supply for supplying power to the control device 13 and other devices. The body component measuring device configured as described above is in a mode in which the measuring device is initialized and the weight of the subject can be measured when the power source 18 of the measuring device is turned on. The subject can input his / her body weight using the input device 15, or the body weight can be directly measured by the scale 2 of the measuring device and stored in the storage device 14. When the weight is measured and input, the personal information of the subject, that is, sex, age, height, etc. is sequentially input by the input device 15 according to the guidance display of the display device 16 and the data is stored in the storage device 14 in the next step. To do.

  Next, the subject is guided through the display device 16 so as to come into contact with the electrodes, and the electrode exchange device 19 is driven in a mode in which the human body impedance of each part of the subject's body can be measured. The electrode exchange device 19 controls ON / OFF of the palm electrode and the sole electrode so as to measure the impedance of the body specific part of the subject. A test subject is placed on the measuring instrument of FIG. 1 and holds the electrode handles 8a and 8b with both hands so that the palm electrodes 10a, 22a, 10b and 22b come into contact with each other, and both feet come into contact with the electrodes 10c, 10d, 22c and 22d on the soles. Then, the human body impedance of the subject is measured.

  For example, when the circuit is controlled so that a current flows through the sole electrode 10c and the palm electrode 10a in FIG. 3 and the voltage is measured via the sole electrode 22c and the palm electrode 22a, the impedance to the body of the left part of the subject is measured. Can be measured. Conversely, when the circuit is controlled so that current flows through the sole electrode 10d and the palm electrode 10b, and the voltage is measured via the sole electrode 22d and the palm electrode 22b, the impedance of the right part of the subject is measured. can do.

  Further, when the circuit is controlled so that current flows through the sole electrode 10c and the sole electrode 10d and the voltage is measured via the sole electrode 22c and the sole electrode 22d, the impedance to the lower body of the subject can be obtained. Can be measured. Further, by controlling the circuit so that a current flows through the palm electrode 10a and the palm electrode 10b and measuring the voltage via the palm electrode 22a and the palm electrode 22b by the same method, the impedance to the upper body of the subject can be measured. .

  Moreover, the impedance with respect to the whole body can be measured by simultaneously connecting the palm electrodes and the electrodes on the soles of the feet in the same manner and measuring the voltage through the current over the whole body. Of course, it is also possible to measure the impedance of a human body diagonal line through one palm and one sole, and the other palm and the other sole electrode.

  As described above, the impedance value of each body part and the information of the subject already input to the storage device 14 are combined and calculated, and the body components (body fat, muscle mass, etc.) of the subject are measured. The body component measuring instrument configured as described above is fixed such that the sole electrodes 10c, 10d, 22c, and 22d configured on the plate-like mounting surface 2a of the scale are exposed and fixed on the surface of the mounting surface. The forefoot sole and the rear sole of the subject are in contact with the respective electrodes.

  In the structure in which the electrode is configured as described above, since the electrode contacts the stratum corneum of the sole, contact failure of the electrode may occur due to a thick stratum corneum and foreign substances such as athlete's foot bacteria. Therefore, the problem that the measurement result of the human body impedance becomes inaccurate may occur.

  The present invention has been devised to solve the above-described problems, and is configured such that the electrode on the sole is in contact with the concave portion of the sole without the stratum corneum, and the weight of the subject is input or measured. After the completion, the electrode on the sole protrudes upward from the lower part of the scale, and is configured to come into contact with the concave part of the sole of the subject. Control for the vertical movement of the sole electrode is performed by an electrode moving device controlled by a control device. Accordingly, an object of the present invention is to provide a structure of an electrode of a sole that can reduce measurement errors, and to provide a safer and more sanitary body component measuring instrument and measuring method thereof against bacterial infections such as athlete's foot bacteria. The task is to do.

  The present invention includes an impedance measurement unit 20 and a control device 13 for processing information input from the scale 2 and information input from the input device 15, and the impedance measurement unit 20 includes at least the electrodes 10c and 10d on the soles. , 22c, and 22d, the electrode on the sole is configured to be movable upward and downward on the platform surface 2a of the scale, and is connected to the control device. The moving device 21 is configured to control the vertical movement of the electrode.

  The impedance measuring unit 20 further includes palm electrodes 10a, 10b, 22a, and 22b, and is configured such that the palm electrodes are separately arranged on a pair of electrode handles 8a and 8b.

  Further, the sole electrode is configured to be positioned below the table before the weight measurement is finished, and to be located above the table until the impedance measurement is finished after the weight measurement is completed. .

  The impedance measuring unit 20 includes a control device 13 that processes information input from the weight scale 2 and information input from the input device 15. The impedance measuring unit 20 includes at least the electrodes 10c, 10d, and 22c on the soles. , 22d, the body component measuring method using the body component measuring device, the step of moving the electrode on the sole of the foot below the platform surface 2a of the scale and initializing the body component measuring device, The step of placing the weight on the platform surface of the scale and measuring the body weight; and after measuring the body weight of the subject, the electrode of the sole is selectively placed on the platform surface by the electrode moving device 21 controlled by the control device 13. A step of contacting the subject's foot by being moved to the upper side of the subject, and using the electrode in contact with the subject's foot, the subject's body impedancer Characterized in that it comprises a step of measuring the scan.

  The impedance measuring unit 20 is configured such that palm electrodes 10a, 10b, 22a, and 22b are divided and additionally arranged on a pair of electrode handles 8a and 8b, and the electrodes on the sole contact the sole of the subject. In this state, the subject grasps the electrode handles 8a and 8b to measure the body impedance.

  In the present invention, after the weight measurement, the electrodes 10c, 10d, 22c, and 22d on the soles located below the platform surface of the scale are automatically projected so as to come into contact with the concave portion in the center of the subject's sole. Therefore, contact failure of electrodes due to foreign substances can be prevented, measurement accuracy of human body impedance can be increased, and an effect of improving hygiene can be obtained.

  Hereinafter, the technical configuration and measurement method of the body component measuring instrument of the present invention will be described in detail with reference to FIGS. The body component measuring instrument of the present invention includes a weight scale 2 having a mounting surface 2a, an impedance measuring unit 20, a control device 13, a storage device 14, an input / output control device 17, an input device 15, a display device 16, and the like. Is done.

  The impedance measurement unit 20 includes an electrode exchange device 19, a current supply device 11, a voltage measurement device 12, and electrodes 10c, 22c, 10d, and 22d on the soles where the feet of the subject are in contact with the platform surface 2a of the scale. A pair of palm electrodes 10a, 22a, 10b, and 22b that come into contact with both hands of the subject are provided, and the palm electrodes of the both hands are arranged in pairs on electrode handles 8a and 8b that can be held by the hands. On the other hand, two pairs of sole electrodes 10c, 22c, 10d, and 22d formed on the platform surface of the weight scale are moved up and down the platform surface 2a by an electrode moving device 21 configured by a solenoid, for example. It is controlled to move freely.

  As shown in FIG. 6a, two sets of sole electrodes 10c, 22c, 10d, and 22d whose vertical movement is controlled by the electrode moving device 21 can be used even if the subject is placed on the platform surface 2a of the scale. Until the measurement is completed, it is located below the mounting surface. When the weight measurement is completed, the electrode on the sole moves upward and protrudes so as to come into contact with the recess on the sole of the subject.

  The impedance measuring unit 20 of the present invention configured as described above can measure the impedance between the electrodes by controlling the electrode exchange device 19, the current supply device 11, and the voltage measurement device 12 by the control device 13. . The impedance measurement method between the electrodes can use the mechanism shown in FIG. 3 referred to in the prior art and need not be described again.

  The body component measuring method of the present invention will be specifically described mainly with reference to FIGS. When the power supply 18 is turned on (ON), the body component measuring instrument of the present invention is set to the weight measurement mode, which is the initial state, and the weight is measured when the subject stands on the display section on the platform surface 2a of the scale. (S1).

  The control device 13 senses the fine movement on the surface of the scale and the detachment of the subject to determine whether normal weight measurement can be performed (S2). If it is determined that normal weight measurement is possible, the measured weight is determined. Data is stored in the storage device 14 and output via the display device 16 (S3). If the control device 13 determines that normal weight measurement cannot be performed, the control device 13 again moves to the weight measurement mode, which is the initial stage of the system.

  When the weight measurement is completed, the subject is guided through the display device 16 such as a speaker or a screen so as to input the subject's personal information, and the subject inputs the personal information such as gender, age and height in accordance with the guidance. (S4). When the personal information is input, the control device 13 determines whether the personal information is input correctly (S5), and determines whether the change in the subject's weight is within the error range in the process of inputting the personal information. Simultaneous determination is made (S6).

  When it is determined that the personal information is accurately input and the change in the weight of the subject is within the error range, the control device 13 controls the electrode moving device 21 to be driven (S7). When the electrode moving device 21 is driven, the electrode on the sole located below the mounting surface 2a protrudes upward and contacts the concave portion in the center of the subject's sole.

  Subsequently, if the subject's weight is within the error range in the personal information input process and there is an error in the input of the personal information, the control device 13 moves to step (S4) to correct and input the personal information. If the change in the subject's weight deviates from the error range, it is determined that the subject has left the mounting surface of the scale 2, and the process moves to step (S1). To control.

  On the other hand, when the electrode moving device 21 is driven in the step (S7), the subject is guided through the display device 16 so that the body of the subject can accurately contact the position of the electrode on the sole and the palm electrode (S8). When the electrode handles 8a and 8b are gripped, the control device 13 determines whether or not each electrode has poor contact with the body of the subject (S9). If there is no contact failure between the electrodes, the measured impedance is measured (S10).

  In the impedance measurement, a current is supplied to the palm electrodes 10a, 10b, 22a, 22b and the sole electrodes 10c, 10d, 22c, 22d selected by the electrode exchange device 19 via the current supply device 11, and the electrode section This is done by measuring and calculating the voltage with the voltage measuring device 12.

  In the process of measuring the impedance, the control device 13 determines whether an electrode contact failure or separation occurs (S11). When there is no electrode detachment or poor contact, the control device 13 calculates the combination of the measured impedance data and the personal information of the subject input to the storage device, so that the subject's body water content, body fat mass, body fat The rate, obesity, body mass index, basal metabolic rate, etc. are calculated, and the results are stored in the storage device 14 and output via the display device 16 (S12).

  If separation of electrodes or contact failure occurs in step (S11), the process moves to step (S7) and the impedance is measured again. Subsequently, after the impedance measurement is completed, when the subject descends from the platform surface of the weight scale, the electrode moving device 21 is turned off and the electrode on the sole of the foot descends below the platform surface of the scale. The measuring instrument returns to the initial state.

  It is possible to prevent poor contact of electrodes due to foreign substances, increase the measurement accuracy of human body impedance, and obtain an effect of improving hygiene.

It is a three-dimensional view showing the structure of a general body component measuring instrument. It is a block diagram for demonstrating the technical structure of a general body component measuring device. It is explanatory drawing of the measurement mechanism of the body impedance using a general body component measuring device. It is a side structure figure of the body component measuring device of this invention. It is a plane structure figure of the body component measuring device of this invention. It is a figure which shows the state before the electrode part of the sole comprised on the mounting surface of the body component measuring device of this invention act | operates. It is a figure which shows the state which the electrode part of the sole comprised on the mounting surface of the body component measuring device of this invention act | operates. It is a block diagram for demonstrating the technical structure of the body component measuring device of this invention. It is a flowchart for demonstrating the drive process of the body component measuring device of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body component measuring device 2 Weight scale 2a Mounting surface 7 Display combined use screen 10a, 10b, 22a, 22b Palm electrode 10c, 10d, 22c, 22d Foot electrode 8a, 8b Electrode handle 10, 22 Electrode part 11 Current supply apparatus 12 Voltage measuring device 13 Control device 14 Storage device 15 Input device 16 Display device 17 Input / output control device 18 Power source 19 Electrode exchange device 20 Impedance measuring unit 21 Electrode moving device

Claims (5)

  The impedance measuring unit 20 includes a control device 13 that processes information input from the weight scale 2 and information input from the input device 15, and the impedance measuring unit 20 includes at least the electrodes 10c, 10d, 22c, and 22d on the sole. In the body component measuring instrument including and comprising, the electrode of the sole is configured to be freely movable upward and downward on the platform surface 2a of the scale, and an electrode moving device 21 connected to the control device. The body component measuring instrument is configured to control the vertical movement of the electrode.   2. The impedance measuring unit 20 further includes palm electrodes 10a, 10b, 22a, and 22b, and is configured such that the palm electrodes are separately arranged on a pair of electrode handles 8a and 8b, respectively. Body component measuring instrument.   The sole electrode is configured to be positioned below the table surface before the weight measurement is completed, and to be positioned above the table surface until the impedance measurement is completed after the weight measurement is completed. The body component measuring device according to claim 1.   The impedance measuring unit 20 includes a control device 13 that processes information input from the weight scale 2 and information input from the input device 15, and the impedance measuring unit 20 includes at least the electrodes 10c, 10d, 22c, and 22d on the sole. In the body component measuring method using the body component measuring instrument including and comprising, the step of initializing the body component measuring instrument by moving the foot electrode below the platform surface 2a of the scale, The step of measuring the weight by going up on the platform surface of the scale, and the electrode moving device 21 controlled by the control device 13 after the subject's weight has been measured selectively A step of contacting the subject's sole by moving the upper side of the table above, and using the electrode in contact with the subject's sole, Body composition measuring method which comprises a step of measuring a-impedance. The impedance measuring unit 20 is configured such that palm electrodes 10a, 10b, 22a, and 22b are divided and additionally arranged on a set of electrode handles 8a and 8b, and the electrode on the sole is in contact with the sole of the subject. 5. The body component measuring method according to claim 4, wherein the subject measures the body impedance by grasping the electrode handles 8a and 8b.

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