JP2014042749A - Biometric measurement device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discriminate whether a user contacts a left hand electrode with the left hand or contacts a right hand electrode with the left hand.SOLUTION: A biometric measurement device is provided with: a current-carrying electrode 42 and a measurement electrode 41 for the left hand which are placed separately in a left hand grip part 40 which a user can grip; and a current-carrying electrode and a measurement electrode for the right hand which are placed separately in a right hand grip part which the user can grip. In the biometric measurement device for measuring the user's biological impedance, in the left hand grip part 40 and the right hand grip part respectively, sensor parts 43 for outputting signals in accordance with the user's grip state are placed and they have discrimination parts for discriminating which of the left and the right hand the user grips the left hand grip part 40 and the right hand grip part with, on the basis of the output signals from the sensor parts 43.

Description

  The present invention relates to a biometric apparatus capable of acquiring biometric information.

As a conventional 8-electrode body composition meter, for example, Patent Document 1 discloses a body composition meter. The 8-electrode body composition meter is generally provided on the assumption that the user is in contact with the left hand and the left hand energizing electrode and measurement electrode are in contact with the right hand. The right-handed energization electrode and measurement electrode, the left-foot energization electrode and measurement electrode provided assuming contact with the left foot, and the contact with the right foot were provided. It has two current-carrying electrodes and measurement electrodes for the right foot.
And as the user is supposed as described above, with the left and right feet in contact with the foot electrodes and the left and right hands in contact with the hand electrodes, for each part of the body and body, A bioimpedance measurement process is executed.

JP 2005-261488 A

  However, according to the conventional 8-electrode body composition meter, if the user does not properly touch the electrode with his / her hand or foot as expected, accurate measurement results can be obtained. Not happening. In particular, there are many cases where the hand electrodes are held in such a way that they are brought into contact with the left and right hands. Such a mishandling is caused by the fact that the left hand grip part is more in the left hand grip than the body composition meter in which both the left hand electrode and the right hand electrode are provided in one handle part connected to the main body as in the cited document 1. This is often seen in body composition analyzers in which a right electrode is provided in a right hand grip part separate from the left hand grip part.

  For example, in a body composition meter that holds the left hand grip part and the right hand grip part by the holding structure of the main body part, the left hand grip part and the right hand grip part may fall off during transportation. Incorrectly, the left-hand grip may be held in the right-hand grip holding structure, and the right-hand grip may be held in the left-hand grip holding structure. If the left hand grip and the right hand grip are held on the main body opposite to each other in this way, the user does not know that these grips are held upside down and the left hand grip Is gripped with the right hand and the grip portion for the right hand is gripped with the left hand, and as a result, the hand electrode may be contacted with the hand on the opposite side. In order to avoid such mishandling, the left and right grips are not held in the holding structure, such as the holding structure that can hold only the left hand grip part and the holding structure that can hold only the right hand grip part. In some cases, the structure has to be provided separately, which increases the manufacturing cost.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a biometric apparatus that can determine whether a user is in contact with the left hand electrode and the right hand electrode in contact with the left hand.

  In order to solve the above-described problems, the biometric device of the present invention is a left hand energization electrode and a measurement electrode that are spaced apart from a left hand grip that can be gripped by a user, and a user that can be gripped. In a biometric apparatus for measuring a bioimpedance of the whole body and each body part of the user, comprising a right-handed energizing electrode and a measuring electrode spaced apart from the right-hand grip, the left-hand grip and the A sensor unit that outputs a signal according to a gripping state by the user is disposed in each of the right-hand grip units, and the left-hand grip unit and the right-hand grip are based on the output signal of the sensor unit. It is characterized by having a discriminating unit for discriminating whether the user is holding the unit with the left or right hand.

  Further, in the biometric device according to the present invention, the determination unit determines whether the sensor unit is covered by a palm side or a finger side of the user, and the user uses the left hand grip unit and the right hand unit. Based on the output signal of the sensor unit when gripping the grip unit, the left hand grip unit and the right hand grip unit are moved by the user with either the left or right hand according to the determination result. It is characterized by discriminating whether it is grasped.

  In the biometric device according to the present invention, the sensor unit may be disposed between the current-carrying electrode and the measurement electrode among the peripheral surface of the left-hand grip unit and the peripheral surface of the right-hand grip unit. It is arranged.

  Further, in the biometric device of the present invention, the left-hand first function electrode is disposed at a position where the thumb side contacts when the user grips the peripheral surface of the left-hand grip portion, and the other finger A second-function electrode for the left hand is disposed at a position where the side contacts, and a first-function electrode for the right hand is positioned at a position where the thumb contacts when the user grips the peripheral surface of the right-hand grip. Is arranged, and the second functional electrode for the right hand is arranged at a position where the other finger side contacts, the first functional electrode functions as the measurement electrode, and the second functional electrode is used for the energization. It functions as an electrode, or the first functional electrode functions as the energization electrode and the second functional electrode functions as the measurement electrode, and the sensor unit is the left-hand grip unit. The user holds the left hand If the user grips with the right hand, the sensor part of the left hand grip part provided at the position covered with the palm of the left hand and the right hand grip part of the peripheral part of the right hand A sensor part of the grip part for the right hand provided at a position to be covered, and the discrimination part is the left hand when the user is gripping the grip part for the left hand and the grip part for the right hand. When both the output signal of the sensor unit of the grip part and the output signal of the sensor part of the right hand grip part are equal to or greater than a predetermined threshold, the left hand grip part is used with the left hand and the right hand grip part is used with the right hand. It is determined that the user is gripping, and if both are less than the predetermined threshold, it is determined that the left hand grip portion is gripped by the right hand and the right hand grip portion is gripped by the left hand. And butterflies.

  Further, in the biometric device of the present invention, the left-hand first function electrode is disposed at a position where the thumb side contacts when the user grips the peripheral surface of the left-hand grip portion, and the other finger A second-function electrode for the left hand is disposed at a position where the side contacts, and a first-function electrode for the right hand is positioned at a position where the thumb contacts when the user grips the peripheral surface of the right-hand grip. Is arranged, and the second functional electrode for the right hand is arranged at a position where the other finger side contacts, the first functional electrode functions as the measurement electrode, and the second functional electrode is used for the energization. It functions as an electrode, or the first functional electrode functions as the energization electrode and the second functional electrode functions as the measurement electrode, and the sensor unit is the left-hand grip unit. The user holds the left hand If the user grips with the right hand, the sensor part of the left hand grip part provided at the position covered with the palm of the left hand and the right hand grip part of the peripheral part of the right hand A sensor part of the grip part for the right hand provided in a covered position, and the sensor part of the grip part for the left hand and the sensor part of the grip part for the right hand are each composed of the same number and a plurality of sensors. And when the user is gripping the left hand grip part and the right hand grip part, the output signal of the sensor part of the left hand grip part exceeds a predetermined threshold output. The number of the plurality of sensors is a predetermined number or more, and the number of the plurality of sensors whose output signal exceeds a predetermined threshold output among the sensor units of the right hand grip unit is a predetermined number or more. In this case, it is determined that the left hand grip portion is gripped by the left hand and the right hand grip portion is gripped by the right hand, and the plurality of the output signals of the sensor portions of the left hand grip portion exceed a predetermined threshold output. If the number of sensors in the right hand grip portion is less than a predetermined number and the number of the plurality of sensors whose output signals exceed a predetermined threshold output is less than the predetermined number, the left hand It is determined that the grip part for the hand is gripped by the right hand and the grip part for the right hand is gripped by the left hand.

  Further, in the biometric device of the present invention, the left-hand first function electrode is disposed at a position where the thumb side contacts when the user grips the peripheral surface of the left-hand grip portion, and the other finger A second-function electrode for the left hand is disposed at a position where the side contacts, and a first-function electrode for the right hand is positioned at a position where the thumb contacts when the user grips the peripheral surface of the right-hand grip. Is arranged, and the second functional electrode for the right hand is arranged at a position where the other finger side contacts, the first functional electrode functions as the measurement electrode, and the second functional electrode is used for the energization. It functions as an electrode, or the first functional electrode functions as the energization electrode and the second functional electrode functions as the measurement electrode, and the sensor unit is the left-hand grip unit. The user holds the left hand If the user grips with the right hand among the sensor part of the left hand grip part provided at the position covered with the fingertip side of the left hand and the peripheral surface of the right hand grip part, the fingertip side of the right hand A sensor part of the grip part for the right hand provided at a position to be covered, and the discrimination part is the left hand when the user is gripping the grip part for the left hand and the grip part for the right hand. When both the output signal of the sensor part of the grip part for the use and the output signal of the sensor part of the grip part for the right hand are less than a predetermined threshold value, the left hand grip part is used with the left hand and the right hand grip part is used with the right hand. It is determined that the user is gripping, and when both are equal to or greater than a predetermined threshold, it is determined that the left hand grip is gripped by the right hand and the right hand grip is gripped by the left hand. And butterflies.

  Further, in the biometric device of the present invention, the left-hand first function electrode is disposed at a position where the thumb side contacts when the user grips the peripheral surface of the left-hand grip portion, and the other finger A second-function electrode for the left hand is disposed at a position where the side contacts, and a first-function electrode for the right hand is positioned at a position where the thumb contacts when the user grips the peripheral surface of the right-hand grip. Is arranged, and the second functional electrode for the right hand is arranged at a position where the other finger side contacts, the first functional electrode functions as the measurement electrode, and the second functional electrode is used for the energization. It functions as an electrode, or the first functional electrode functions as the energization electrode and the second functional electrode functions as the measurement electrode, and the sensor unit is the left-hand grip unit. The user holds the left hand If the user grips with the right hand among the sensor part of the left hand grip part provided at the position covered with the fingertip side of the left hand and the peripheral surface of the right hand grip part, the fingertip side of the right hand A sensor part of the grip part for the right hand provided in a covered position, and the sensor part of the grip part for the left hand and the sensor part of the grip part for the right hand are each composed of the same number and a plurality of sensors. And when the user is gripping the left hand grip part and the right hand grip part, the output signal of the sensor part of the left hand grip part exceeds a predetermined threshold output. The number of the plurality of sensors is less than a predetermined number, and the number of the plurality of sensors whose output signal exceeds a predetermined threshold output among the sensor units of the right-hand grip unit is less than the predetermined number. In this case, it is determined that the left hand grip portion is gripped by the left hand and the right hand grip portion is gripped by the right hand, and the plurality of the output signals of the sensor portions of the left hand grip portion exceed a predetermined threshold output. And the number of the plurality of sensors whose output signal exceeds a predetermined threshold output among the sensor units of the right hand grip unit is equal to or greater than a predetermined number. It is determined that the grip part for the hand is gripped by the right hand and the grip part for the right hand is gripped by the left hand.

  Further, in the biometric device of the present invention, the left-hand first function electrode is disposed at a position where the thumb side contacts when the user grips the peripheral surface of the left-hand grip portion, and the other finger A second-function electrode for the left hand is disposed at a position where the side contacts, and a first-function electrode for the right hand is positioned at a position where the thumb contacts when the user grips the peripheral surface of the right-hand grip. Is arranged, and the second functional electrode for the right hand is arranged at a position where the other finger side contacts, the first functional electrode functions as the measurement electrode, and the second functional electrode is used for the energization. It functions as an electrode, or the first functional electrode functions as the energization electrode and the second functional electrode functions as the measurement electrode, and the sensor unit is the left-hand grip unit. The user holds the left hand A first sensor part of the left hand grip part provided at a position covered by the palm of the left hand, a second sensor part of the left hand grip part provided at a position covered by the fingertip side of the left hand, and The right hand grip part is covered by the third sensor part of the right hand grip part and the right hand fingertip side provided at a position covered by the right hand palm side when the user holds the right hand grip part of the peripheral surface of the right hand grip part. The right hand grip portion of the fourth sensor portion provided at a position where the user is gripping the left hand grip portion and the right hand grip portion when the user holds the left hand grip portion. When the output signal of the first sensor unit is larger than the output signal of the second sensor unit and the output signal of the third sensor unit is larger than the output signal of the fourth sensor unit, the left hand grip That the right hand grip part is gripped by the right hand, the output signal of the first sensor part is smaller than the output signal of the second sensor part, and the output of the third sensor part When the signal is smaller than the output signal of the fourth sensor unit, it is determined that the left hand grip portion is gripped by the right hand and the right hand grip portion is gripped by the left hand.

  Further, in the biometric device of the present invention, the left-hand first function electrode is disposed at a position where the thumb side contacts when the user grips the peripheral surface of the left-hand grip portion, and the other finger A second-function electrode for the left hand is disposed at a position where the side contacts, and a first-function electrode for the right hand is positioned at a position where the thumb contacts when the user grips the peripheral surface of the right-hand grip. Is arranged, and the second functional electrode for the right hand is arranged at a position where the other finger side contacts, the first functional electrode functions as the measurement electrode, and the second functional electrode is used for the energization. It functions as an electrode, or the first functional electrode functions as the energization electrode and the second functional electrode functions as the measurement electrode, and the sensor unit is the left-hand grip unit. The user holds the left hand A first sensor part of the left hand grip part provided at a position covered by the palm of the left hand, a second sensor part of the left hand grip part provided at a position covered by the fingertip side of the left hand, and The right hand grip part is covered by the third sensor part of the right hand grip part and the right hand fingertip side provided at a position covered by the right hand palm side when the user holds the right hand grip part of the peripheral surface of the right hand grip part. A fourth sensor part of the grip part for the right hand provided at a position where the first sensor part, the second sensor part, the third sensor part, and the fourth sensor part have the same number. And a plurality of sensors, and the determination unit outputs an output signal out of the sensor units of the left-hand grip unit when the user is gripping the left-hand grip unit and the right-hand grip unit. When the number of the plurality of sensors that exceeds a predetermined threshold output is greater in the first sensor unit than in the second sensor unit and more in the third sensor unit than in the fourth sensor unit It is determined that the left hand grip portion is gripped by the left hand and the right hand grip portion is gripped by the right hand, the first sensor portion is less than the second sensor portion, and the fourth When the third sensor unit is smaller than the sensor unit, it is determined that the left hand grip unit is gripped by the right hand and the right hand grip unit is gripped by the left hand.

  Further, the biometric device of the present invention is configured such that when the user determines that the user is holding the left hand grip by the right hand and the right hand grip by the left hand, the determination unit determines that the left hand is energized. Electrode for causing the right electrode and the measurement electrode to function as the right-hand energization electrode and the measurement electrode, and for the right hand energization electrode and the measurement electrode to function as the left-hand energization electrode and the measurement electrode It has a switching part.

  The biometric device of the present invention performs alert processing when the determination unit determines that the user is holding the left-hand grip unit with a right hand and the right-hand grip unit with a left hand. It is characterized by doing.

  According to the biometric device of the present invention, since the user can determine whether the left hand electrode is in contact with the left hand and the right hand electrode is in contact with the left hand, the user can determine whether the left hand grip portion and the right hand grip portion are Even if the hand is gripped with the left and right hands, it can be determined that the hand is gripped with the opposite hand, and thereby a correct measurement result can be obtained.

It is a perspective view which shows the structure of the body composition meter which concerns on 1st Embodiment. It is a block diagram which shows the structure of the body composition meter which concerns on 1st Embodiment. It is a block diagram which shows the structure of the bioimpedance measurement part in 1st Embodiment. It is a perspective view which shows the structure of the grip part for right hands of 1st Embodiment, and a holding | maintenance part. It is a figure which shows the structure of the grip part for left hands of 1st Embodiment, Comprising: (a) is a left view, (b) is a front view, (c) is a right view. It is a figure which shows the structure of the grip part for right hands of 1st Embodiment, Comprising: (a) is a left view, (b) is a front view, (c) is a right view. It is sectional drawing of the grip part for left hands of 1st Embodiment, Comprising: It is sectional drawing in the VII-VII 'line | wire of FIG.5 (c). It is a left view for demonstrating arrangement | positioning of the sensor part of the grip part for left hands of 1st Embodiment. It is a flowchart which shows the flow of the process of the measurement by the body composition meter which concerns on 1st Embodiment. (A) is a side view showing a state in which a user correctly holds the left hand grip portion of the first embodiment with the left hand, (b) is a front view corresponding to (a), and (c) is a right hand grip portion. It is a side view which shows the state hold | gripped by the left hand accidentally. It is a figure which shows the structure of the grip part for left hands in the 1st modification of 1st Embodiment, Comprising: (a) is a left view, (b) is a right view. It is a figure which shows the structure of the grip part for right hands in the 1st modification of 1st Embodiment, Comprising: (a) is a left view, (b) is a right view. It is a figure which shows the structure of the grip part for left hands in the 2nd modification of 1st Embodiment, Comprising: (a) is a left view, (b) is a right view. It is a figure which shows the structure of the grip part for right hands in the 2nd modification of 1st Embodiment, Comprising: (a) is a left view, (b) is a right view. It is a block diagram which shows the connection from the sensor part in the 2nd modification of 1st Embodiment to a control part. (A) is a left view which shows the structure of the grip part for left hands of 2nd Embodiment, (b) is a right view which shows the structure of the grip part for right hands. It is a block diagram which shows the connection from the sensor part in 2nd Embodiment to a control part. It is a figure which shows the structure of the grip part for left hands in the 1st modification of 2nd Embodiment, Comprising: (a) is a left view, (b) is a right view. It is a figure which shows the structure of the grip part for right hands in the 1st modification of 2nd Embodiment, (a) is a left view, (b) is a right view. It is a block diagram which shows the connection from the sensor part in the 1st modification of 2nd Embodiment to a control part.

<First Embodiment>
Hereinafter, a biometric apparatus according to a first embodiment of the present invention will be described in detail with reference to the drawings. 1st Embodiment demonstrates the example which applied this invention to the body composition meter which can measure a body composition. FIG. 1 is a perspective view of a body composition meter 10 (biological measurement device) according to the first embodiment of the present invention, FIG. 2 is a block diagram of the body composition meter 10 of FIG. 1, and FIG. FIG. 4 is a perspective view showing the configuration of the right-hand grip part 50 and the holding part 15 of the first embodiment. 1 shows a state in which the pair of grip portions 40 and 50 are respectively attached to the holding portions 14 and 15, and FIG. 4 shows a state in which the right-hand grip portion 50 is removed from the holding portion 15. The holding part 14 and the holding part 15, and the left hand grip part 40 and the right hand grip part 50 are substantially symmetrical, and the left hand grip part 40 is similar to the right hand grip part 50 shown in FIG. 4. 14 can be removed.

  As shown in FIG. 1 to FIG. 3, a body composition meter 10 as a biometric measurement apparatus includes a main body part 11, a support shaft 12, a display / operation unit 13, a pair of grip parts 40 and 50, and a measurement electrode. 31b, 32b, 41, 51, energization electrodes 31a, 32a, 42, 52, cables 49, 59, holding units 14, 15, display unit 21, operation unit 22, calculation unit 24, storage Unit 25, determination unit 26, load cell 27, control unit 29, bioimpedance measurement unit 60 (including power supply unit 61, voltage measurement unit 62, and electrode switching unit 63), and sensor units 43 and 53. , Fixed resistors 44R1, 44R2, 44R3, 54R1, 54R2, and 54R3, amplifiers 45 and 55, A / D converters 46 and 56, and a power source (not shown) for supplying power.

  As shown in FIG. 1, the main body portion 11 includes a placement portion 11 a that allows a user to stand and ride. The display / operation unit 13 is supported by a support shaft 12 fixed on the main body 11. The display / operation unit 13 includes a display unit 21, an operation unit 22, and holding units 14 and 15 provided on the left and right sides, respectively. A pair of grip units 40 and 50 can be attached to and detached from the holding units 14 and 15. Each is held (see FIG. 4). Note that the left-hand grip 40 and the right-hand grip 50 are held so that the measurement electrodes 41 and 51 are held on the front side with respect to the user who rides on the placement unit 11a. It is preferable to have the shape of the grip part 50 for use and / or the holding parts 14 and 15. The left hand grip portion 40 is electrically connected to the display / operation unit 13 via a cable 49 and the right hand grip portion 50 is electrically connected to the display / operation unit 13 via a cable 59. Further, the display / operation unit 13 is electrically connected to the main body 11 by a cable (not shown) inserted through the support shaft 12. Note that the left-hand grip 40 and the right-hand grip 50 are not particularly limited as long as they can be gripped by the user.

2 or 3, the calculation unit 24, the storage unit 25, the determination unit 26, the load cell 27, the control unit 29, the power supply unit 61, the voltage measurement unit 62, and the electrode switching unit disposed inside the main body unit 11. 63 are shown, but these are internal mechanisms in FIG. 1 and are not shown.
Below, the detailed structure of each member is demonstrated.

  In the present invention, the biometric information includes (1) biometric information (mainly body weight and bioimpedance, etc.) obtained by directly measuring the user with a biometric device, and (2) the user operating the operation unit 22. Biological information acquired by inputting (mainly age, sex, height, etc.), (3) biological information acquired by applying these biological information to a predetermined regression equation (mainly whole body and body part) Per fat percentage, fat mass, lean mass, muscle mass, visceral fat mass, visceral fat level, visceral fat area, subcutaneous fat mass, basal metabolic rate, bone mass, body water content, BMI (Body Mass Index), cells Internal fluid volume, extracellular fluid volume, etc.).

  The display unit 21 as a display unit displays biological information measured by the load cell 27 and the biological impedance measuring unit 60, and biological information and other information input by operating the operation unit 22 by the user. The display unit 21 employs, for example, a liquid crystal display such as a full dot LCD (Liquid Crystal Display). In the present embodiment, the display unit 21 is provided in the display / operation unit 13 supported by the support shaft 12 fixed on the main body unit 11.

  The operation unit 22 is an input unit for inputting biological information such as height, sex, and age, and setting items tailored to an individual. The input personal biometric information and setting items are stored in the storage unit 25 and displayed on the display unit 21. For example, a button type, a touch sensor type, a dial type, or the like can be used as the operation unit 22. The operation unit 22 also functions as a biological information acquisition unit. In the present embodiment, the operation unit 22 is provided in the display / operation unit 13 supported by the support shaft 12 fixed on the main body unit 11.

Under the control of the control unit 29, for example, the calculation unit 24 as a calculation unit performs predetermined regression on biological information such as the height, age, and sex input by the user, and the measured weight and bioimpedance of the user. Various arithmetic processes such as calculating biological information such as fat percentage are performed by applying to the formula. The calculation result is stored in the storage unit 25. Moreover, the calculating part 24 functions also as a biometric information acquisition means.
Note that the above-described function of the calculation unit 24 may be provided to the control unit 29.

  The storage unit 25 serving as a storage unit is a storage unit including a ROM (non-volatile memory (Read Only Memory)), a RAM (volatile memory (Random Access Memory)), and the like, and stores various data.

  The load cell 27 serving as a biological information acquisition unit includes a strain member made of a metal member that deforms in response to a load, and a strain gauge attached to the strain body. When the user gets on the body composition meter 10, the strain body of the load cell 27 is bent by the load of the user and the strain gauge expands and contracts, and the resistance value (output value) of the strain gauge changes according to the expansion and contraction. The control unit 29 causes the calculation unit 24 to calculate the weight based on the difference between the output value (zero point) of the load cell 27 when no load is applied and the output value when the load is applied. It is to be measured. The configuration related to the measurement of body weight using the load cell 27 may be the same as that of a general scale.

  The bioelectrical impedance measurement unit 60 as biometric information acquisition means includes (1) current-carrying electrodes 31a and 32a and measurement electrodes 31b and 32b that can be in contact with the user's foot, and (2) contact with the user's hand. Power supply for supplying a weak high-frequency constant current connected to the current-carrying electrodes 42 and 52 and the measurement electrodes 41 and 51 and (3) the current-carrying electrodes 31a and 32a and the current-carrying electrodes 42 and 52 Unit 61, (4) voltage measuring unit 62 connected to measurement electrodes 31b and 32b and measurement electrodes 41 and 51 for measuring a potential difference of a living body, and (5) electrode switching unit 63. Have.

  The electrode switching unit 63 is configured to detect the left hand energization electrode and the measurement when the determination unit 26 determines that the user is holding the left hand grip 40 with the right hand and the right hand grip 50 with the left hand. Switching means for causing the electrode to function as a right-handed energizing electrode and a measuring electrode and causing the right-handed energizing electrode and the measuring electrode to function as a left-handed energizing electrode and a measuring electrode. The electrode switching unit 63 includes an energization electrode switching unit 63a and a measurement electrode switching unit 63b. The energization electrodes 31a, 32a, 42, and 52 are connected to the energization electrode switching unit 63a. The power supply unit 61 generates a high-frequency current having a frequency instructed by the control unit 29, and the energization electrode switching unit 63a converts the measurement current received from the power supply unit 61 into the energization electrodes 31a, 32a, 42, The voltage is selectively applied between two energization electrodes designated by the control unit 29 of 52. The measurement electrodes 31b, 32b, 41, and 51 are connected to the measurement electrode switching unit 63b. The measurement electrode switching unit 63b selectively connects the two measurement electrodes designated by the control unit 29 among the measurement electrodes 31b, 32b, 41, and 51 to the voltage measurement unit 62, and the voltage measurement unit 62 Measures the potential difference between the two selected measurement electrodes, that is, the potential difference caused by the bioimpedance between the selected body parts (the bioimpedance of each body part), and outputs the measured value to the control unit 29. . The output value of the voltage measuring unit 62 is converted from an analog measurement value to a digital measurement value via an A / D converter (not shown) and output.

  The body composition meter 10 includes a left foot energization electrode 31a and a measurement electrode 31b, and a right foot energization electrode 32a and a measurement electrode 32b, which are spaced apart from each other on the upper surface of the placement portion 11a. That is, as shown in FIG. 1, the energization electrodes 31 a and 32 a and the measurement electrodes 31 b and 32 b are arranged apart from each other on the upper surface of the mounting portion 11 a of the main body portion 11 of the body composition meter 10. When a person gets on the body composition meter 10, it is configured as an electrode for a foot that can contact the left and right soles. In the present embodiment, the energization electrodes 31a and 32a and the measurement electrodes 31b and 32b have been described as being separated from each other on the upper surface of the placement portion 11a as electrodes for legs. It is not limited to a simple configuration. For example, a clip portion capable of sandwiching the user's ankle or the like is provided instead of being spaced apart from the upper surface of the placement portion 11a, and the energization electrode and the measurement electrode may be provided in the clip portion. In addition, the electrode may not be an electrode for the foot, but may be an electrode that can be brought into contact with a portion other than the user's both feet (calf, thigh, abdomen, etc.).

  The body composition meter 10 includes a left hand energizing electrode 42 and a measuring electrode 41 that are spaced apart from a left hand grip 40 that can be gripped by the user, and a right hand grip 50 that can be gripped by the user. Are provided with a right-handed energizing electrode 52 and a measuring electrode 51 which are spaced apart from each other. More specifically, the first function electrode for the left hand is disposed at a position (refer to reference numeral 41 in FIG. 1) where the thumb side comes into contact when the user grips the peripheral surface of the left hand grip portion 40. The left-hand second function electrode is disposed at a position where the finger side contacts (see reference numeral 42 in FIG. 1), and the thumb side contacts when the user grips the peripheral surface of the right-hand grip 50. A first functional electrode for the right hand is disposed at a position (see reference numeral 51 in FIG. 1), and a second functional electrode for the right hand is disposed at a position (see reference numeral 52 in FIG. 1) at which the other finger side contacts. ing. In the present embodiment, the first functional electrode functions as the measurement electrodes 41 and 51 and the second functional electrode functions as the energization electrodes 42 and 52 will be described. The functional electrode may function as an energization electrode, and the second functional electrode may function as a measurement electrode.

  The energization electrode 42 and the measurement electrode 41 are spaced apart from each other on the peripheral surface of the substantially cylindrical left-hand grip portion 40, and are disposed at equal angular intervals, for example, with respect to the central axis of the left-hand grip portion 40 (see FIG. 7). Similarly, the energization electrode 52 and the measurement electrode 51 are spaced apart from each other on the peripheral surface of the substantially cylindrical right-hand grip portion 50, for example, at equal angular intervals with respect to the central axis of the right-hand grip portion 50. Yes. The longitudinal lengths (vertical widths) of the energization electrodes 42 and 52 and the measurement electrodes 41 and 51 may be set based on the standard size of an adult hand, for example. Note that the arrangement method of the hand-carrying electrodes 42 and 52 and the measurement electrodes 51 and 52 on the grip portions 40 and 50 is not limited to the above-described configuration.

The bioelectrical impedance of the whole body and each body part of the user is measured by the electrode switching unit 63 (the current-carrying electrode switching unit 63a and the measurement electrode switching unit 63b) by the power supply unit 61, the voltage measurement unit 62, and each electrode (31a). , 31b, 32a, 32b, 41, 42, 51, 52), for example, in the following manner while appropriately switching the connection.
(1) Whole body bioimpedance is measured by supplying current using the energization electrode 42 and the energization electrode 31a and contacting the left hand in the current path flowing through the left hand, left arm, chest, abdomen, left leg, and left foot. The potential difference is measured between the measuring electrode 41 and the measuring electrode 31b in contact with the left foot.
(2) The measurement of the bioimpedance of the right lower limb is performed by supplying current using the energizing electrode 52 and the energizing electrode 32a, and in the current path flowing through the right hand, right arm, chest, abdomen, right leg, and right foot, A potential difference is measured between the measurement electrode 31b in contact with the measurement electrode 32b in contact with the right foot.
(3) The measurement of the bioimpedance of the left lower limb is performed by supplying current using the energizing electrode 42 and the energizing electrode 31a, and in the current path flowing through the left hand, left arm, chest, abdomen, left leg, and left foot. A potential difference is measured between the measurement electrode 31b in contact with the measurement electrode 32b in contact with the right foot.
(4) In the measurement of the bioimpedance of the upper right limb, current is supplied using the energizing electrode 52 and the energizing electrode 32a, and in the current path flowing through the right hand, right arm, chest, abdomen, right leg, and right foot, A potential difference is measured between the measurement electrode 41 in contact with the measurement electrode 51 in contact with the right hand.
(5) The measurement of the bioimpedance of the left upper limb is performed by supplying current using the energizing electrode 42 and the energizing electrode 31a, and in the current path flowing through the left hand, left arm, chest, abdomen, left leg, and left foot. A potential difference is measured between the measurement electrode 41 in contact with the measurement electrode 51 in contact with the right hand.

  In this way, the body composition meter 10 can measure a potential difference generated in the current path by causing a current to flow from each energizing electrode to a predetermined part of the user's body. That is, in the body composition meter 10, the user brings the left foot into contact with the left foot electrode (31a, 31b), the right foot with the right foot electrode (32a, 32b), and the left hand electrode (41, 42). The left hand is brought into contact with the right hand and the right hand is brought into contact with the right hand electrode (51, 52), and the bioimpedance of the whole body and each body part of the user is measured. Moreover, the control part 29 can make the calculating part 24 calculate a user's bioimpedance based on each value of such an electric current and an electrical potential difference. Further, the control unit 29 applies the biometric impedance calculated in this way and the biometric information such as weight, age, sex, and height to the calculation unit 24 to a predetermined regression equation, thereby obtaining the fat percentage, viscera, and the like. The fat level and the like can be calculated. The configuration related to the measurement of bioimpedance may be the same configuration as a general body fat meter or body composition meter.

  As shown in FIG. 2, the display unit 21, the operation unit 22, the calculation unit 24, the storage unit 25, the determination unit 26, the load cell 27, the bioimpedance measurement unit 60, the sensor unit 43, the amplifier 45, the A / D converter 46, The sensor unit 53, the amplifier 55, and the A / D converter 56 are electrically connected directly or indirectly to the control unit 29, and the control unit 29 controls these operations. Further, a power source (not shown) is connected to the control unit 29. As a power source, a battery or an external power source that supplies power for operating the body composition meter 10 can be used.

Next, the sensor unit will be described with reference to FIGS.
5A and 5B are diagrams showing the configuration of the left-hand grip portion 40, where FIG. 5A is a left side view, FIG. 5B is a front view, FIG. 6C is a right side view, and FIG. It is a figure which shows the structure of the work grip part 50, (a) is a left view, (b) is a front view, (c) is a right view, FIG. 7 is sectional drawing of the left hand grip part 40, FIG. FIG. 5C is a cross-sectional view taken along line VII-VII ′ in FIG. 5, and FIG. 8 is a left side view for explaining the arrangement of the sensor part of the left-hand grip part 40.

  The left hand grip portion 40 and the right hand grip portion 50 have substantially the same cylindrical shape, and as shown in FIG. 7, the orthogonal cross section in the longitudinal direction (Z direction) has an elliptical shape with a short axis a and a long axis b. It has become. Here, the size of the left hand grip portion 40 is, for example, when the direction P1 in FIG. 7 is the circumferential direction, for example, the outer circumferential length (circumferential length) shown in FIG. The length of the arc c connecting the energization electrode 42 (the width of the space between the energization electrode and the measurement electrode) is approximately 25 mm. The right hand grip 50 is also the same size as the left hand grip 40. In the present embodiment, the left-hand grip 40 and the right-hand grip 50 are described as having a substantially cylindrical shape with a long shape, but the shapes of the left-hand grip 40 and the right-hand grip 50 are the same. For example, a shape that can be gripped by the user, such as an annular shape, may be employed.

  Sensor units 43 and 53 for outputting a signal corresponding to the gripping state by the user are disposed in the left hand grip unit 40 and the right hand grip unit 50, respectively. In the present embodiment, the sensor units 43 and 53 are shown in an example in which the sensor units 43 and 53 are arranged in a space between the current-carrying electrodes 42 and 52 and the measurement electrodes 41 and 51 of the left-hand grip unit 40 and the right-hand grip unit 50. The present invention is not limited to such an arrangement. The sensor part in this embodiment is a left hand grip provided in the space on the left side when the left hand grip part 40 is viewed from the user side (Y direction in FIG. 1; see FIG. 5B). The right hand grip 50 provided in the space on the right side when the sensor unit 43 of the unit 40 and the right hand grip 50 are viewed from the user side (Y direction in FIG. 1; see FIG. 6B). Sensor portion 53.

  That is, the left-hand grip portion 40 and the right-hand grip portion 50 are energized electrodes 42 and 52 when the measurement electrodes 41 and 51 are held on the front side with respect to the user who rides on the placement portion 11a. Is positioned on the back side, and the sensor units 43 and 53 are arranged so as to be at predetermined positions on the outside. In addition, when the measurement electrodes 41 and 51 are arranged side by side on the front side, the sensor units 43 and 53 are arranged at positions symmetrical to the measurement electrodes 41 and 51, respectively. Here, the near side is the right side in FIGS. 5 (a) and 6 (a). In other words, as shown in FIG. 1, the left hand grip 40 and the right hand grip are provided on the holding portions 14 and 15. In the state in which the portions 50 are respectively held, the Y direction is the direction of the user standing on the mounting portion 11a of the main body portion 11. The back side is a surface opposite to the “near side” in the Y direction.

  The sensor unit according to the present invention is not limited to the above-described configuration, and the sensor unit 43 of the left-hand grip unit 40 is a case where the user grips the left-hand grip unit 40 with the left hand. The sensor portion 53 of the right hand grip 50 is covered with the right palm of the peripheral surface of the right hand grip 50 when the user grips it with the right hand. It suffices if it is provided at a position to be touched.

  The sensor part 43 of the left-hand grip part 40 and the sensor part 53 of the right-hand grip part 50 are each composed of the same number and a plurality of sensors. In the present embodiment, the sensor unit 43 includes five strain gauges 43a, 43b, 43c, 43d, and 43e that are arranged at equal intervals along the longitudinal direction of the left-hand grip unit 40 (Z direction in FIG. 5). Prepare. Similarly to the sensor unit 43, the sensor unit 53 includes five strain gauges 53a, 53b, 53c, 53d, which are arranged at equal intervals along the longitudinal direction of the right hand grip unit 50 (Z direction in FIG. 6). 53e.

  As shown in FIG. 2, the strain gauge 43a constitutes a bridge circuit 43Ba together with the fixed resistors 44R1, 44R2, and 44R3. A voltage is applied to the bridge circuit 43Ba from a power supply 44V, and an output from the bridge circuit 43Ba. Is amplified by the amplifier 45, converted into a digital signal by the A / D converter 46, and output to the control unit 29. Similarly, the strain gauges 43b to 43e constitute a bridge circuit 43Bb (not shown in FIG. 2) to a bridge circuit 43Be, and their outputs are sent to the control unit 29 via the amplifier 45 and the A / D converter 46. Is output. Similarly to the strain gauge 43a, the strain gauge 53a forms a bridge circuit 53Ba together with the fixed resistors 54R1, 54R2, and 54R3, and a voltage is applied to the bridge circuit 53Ba from the power supply 54V. Is amplified by an amplifier 55, converted into a digital signal by an A / D converter 56, and output to the control unit 29. Similarly, the strain gauge 53b to the strain gauge 53e constitute a bridge circuit 53Bb (not shown in FIG. 2) to the bridge circuit 53Be, and outputs from the respective circuits to the control unit 29 via the amplifier 55 and the A / D converter 56. Is output.

  Each of the strain gauges 43a, 43b, 43c, 43d, and 43e is deformed by pressure applied by the user's hand when the user grips the left hand grip 40. Since the electrical resistance value of the deformed strain gauge changes, an output different from the output from the bridge circuit of the strain gauge that is not deformed can be obtained from the bridge circuit. Accordingly, the determination unit 26 described later can determine which strain gauge is touched by the user's hand. The same applies to the strain gauges 53a, 53b, 53c, 53d, and 53e.

  Here, the arrangement of strain gauges on the left-hand grip 40 will be described with reference to FIG. At least three strain gauges are provided in order to determine which of the left and right hands of the user is in contact. Of the space between the measurement electrode 41 and the energization electrode 42, the upper end and the lower end of the measurement electrode 41 and the energization electrode 42 along the longitudinal direction of the left hand grip 40 (Z direction in FIG. 8). Are provided one by one (strain gauge 43a and strain gauge 43e), and the third and subsequent strain gauges (strain gauge 43b to strain gauge 43d) are provided between the two strain gauges 43a and 43e. What is necessary is just to arrange | position in the space 43s. As an example, the sensor units 43 and 53 are arranged such that five strain gauges are arranged at intervals of 25 mm so that the length from the strain gauges 43a and 53a at one end to the strain gauges 43e and 53e at the other end is 125 mm. Should be provided. In the example shown in FIGS. 5 and 6, five strain gauges are arranged in the longitudinal direction (Z direction in FIGS. 5 and 6) of the left hand grip portion 40 and the right hand grip portion 50. It is preferable that the number is 6 or more because more accurate discrimination can be performed. The arrangement of the strain gauges on the right-hand grip 50 is the same as that of the left-hand grip 40, and the same number is arranged in contrast to the position corresponding to the strain gauge of the left-hand grip 40.

  Based on the output signals from the sensor unit 43 of the left hand grip unit 40 and the sensor unit 53 of the right hand grip unit 50, the determination unit 26 determines whether the left hand grip unit 40 and the right hand grip unit 50 are left or right. It is determined whether the hand is held. The function of the determination unit 26 may be provided to the control unit 29. In this embodiment, the determination unit 26 includes output signals from the bridge circuits 43Ba to 43Be including the strain gauges 43a to 43e as the sensor unit 43 and bridge circuits including the strain gauges 53a to 53e as the sensor unit 53, respectively. The determination is performed based on output signals from 53Ba to 53Be.

  As described above, the sensor units 43 and 53 in the present embodiment are arranged at predetermined positions on the outer side when the measurement electrodes 41 and 51 are arranged on the front side. When gripped with the right hand, the sensor unit 43 is covered with the palm side of the palm with a large contact area, whereas when touched with the right hand, the sensor unit 43 has a finger with a small contact area. Because it is covered on the side, there are few strain gauges in contact. As described above, the number of strain gauges to be deformed differs depending on whether the sensor units 43 and 53 are covered on the palm side or the finger side of the user. Therefore, the determination unit 26 determines whether the sensor units 43 and 53 are covered with the palm side or finger side of the user when the user holds the left hand grip unit 40 and the right hand grip unit 50. Based on the output signals of the sensor units 43 and 53, it is determined whether the user is holding the left hand grip unit 40 and the right hand grip unit 50 with the left or right hand according to the determination result. To do. More details will be described later.

  Next, with reference to FIG.9 and FIG.10, the flow of the biological measurement by the body composition meter 10 is demonstrated. FIG. 9 is a flowchart showing a flow of measurement processing by the body composition meter 10, and FIG. 10A is a side view showing a state in which the user correctly holds the left hand grip portion of the first embodiment with the left hand. ) Is a front view corresponding to (a), and (c) is a side view showing a state where the right hand grip portion is erroneously gripped by the left hand.

  When the measurement process starts, the control unit 29 performs a zero point update process for acquiring an output value when the load cell 27 is not loaded and setting it as a zero point (step S101). Then, the control part 29 performs a weight measurement process (step S102). More specifically, the control unit 29 displays predetermined guidance items for the user on the display unit 21 and instructs the user to get on the mounting unit 11 a of the body 11 of the body composition meter 10. And the output value of the load cell 27 when a user gets on the mounting part 11a is acquired, and the calculating part 24 is made to calculate a weight value. In addition, the control unit 29 stores the result of the weight measurement in the storage unit 25.

  Next, the control unit 29 acquires output signals from the sensor unit 43 of the left hand grip unit 40 and the sensor unit 53 of the right hand grip unit 50 (step S103). More specifically, each output signal from the bridge circuits 43Ba to 43e including the strain gauges 43a to 43e as the sensor unit 43 is amplified by the amplifier 45 and converted into a digital signal by the A / D converter 46, and Data obtained by amplifying the output signals from the bridge circuits 53Ba to 53Be including the strain gauges 53a to 53e as the sensor unit 53 by the amplifier 55 and converting the output signals into digital signals by the A / D converter 56 is obtained. The control unit 29 sends the read data to the determination unit 26.

  Next, the discriminating unit 26 discriminates based on the output signals of the sensor units 43 and 53 whether the user is holding the left hand grip unit 40 and the right hand grip unit 50 with the left or right hand (step). S104).

  An example of the determination is as follows. When the user is gripping the left hand grip 40 and the right hand grip 50, the output signal of the sensor 43 of the left hand grip 40 (for example, the total output of the bridge circuits 43Ba to 43Be) and the right hand grip When the output signal of the sensor unit 53 of the unit 50 (for example, the sum of the outputs of the bridge circuits 53Ba to 53Be) is equal to or greater than the predetermined threshold value (1), the left hand grip unit 40 is moved by the left hand and the right hand grip unit. 50 is determined to be gripped by the right hand. (2) If both are less than the predetermined threshold, it is determined that the left hand grip 40 is gripped by the right hand and the right hand grip 50 is gripped by the left hand. As another example of the determination, the following is performed.

  (1) When the user is gripping the left hand grip 40 and the right hand grip 50, (a) out of the strain gauge as the sensor 43 of the left hand grip 40, the output signal is a predetermined threshold output. Of strain gauges (a plurality of sensors) exceeding the predetermined number, and (b) strain gauges of which the output signal exceeds a predetermined threshold output among the strain gauges as the sensor part 53 of the right-hand grip part 50 ( If the number of sensors is equal to or greater than the predetermined number, it is determined that the left hand grip 40 is gripped by the left hand and the right hand grip 50 is gripped by the right hand.

  Since the sensor units 43 and 53 in the present embodiment are configured by five strain gauges, each indicated by 43a to 43e and 53a to 53e, as the same number and a plurality of sensors, for example, the predetermined number is three. Can be set as The predetermined threshold output is an output value (mv / V) determined for determining whether or not the hand is in contact with the strain gauge. Accordingly, (a) among the bridge circuits 43Ba to 43Be including the strain gauges 43a to 43e of the left hand grip section 40, the number of strain gauges related to the bridge circuit whose output signal exceeds a predetermined threshold output is three or more. (B) Among the bridge circuits 53Ba to 53Be including the strain gauges 53a to 53e of the right hand grip unit 50, respectively, when the number of strain gauges related to the bridge circuit whose output signal exceeds a predetermined threshold output is three or more. The discriminator 26 correctly grips the left and right grips 40, 50, that is, the user grips the left hand grip 40 with the left hand and the right hand grip 50 with the right hand. It is determined that it is gripped. As shown in FIGS. 10A and 10B, when the user correctly holds the left hand grip 40 with the left hand, the sensor unit 43 is covered with the palm side having a large contact area. In FIG. 10A, the palm of the left hand of the user contacts the three strain gauges 43a to 43c. At this time, the strain gauges 43a to 43c are deformed by the gripping pressure of the user to change their resistance values, but the strain gauges 43d and 43e that are not in contact have no gripping pressure. Hardly changes. Therefore, an output exceeding a predetermined threshold output can be detected from the bridge circuits 43Ba to 43Be including the strain gauges 43a to 43c, respectively, and the number of strain gauges whose output signals exceed the predetermined threshold output is equal to or greater than a predetermined number (three). The same applies to the case where the user correctly holds the right hand grip 50 with the right hand. As a result, the determination unit 26 determines that the user is correctly holding the left and right grip portions 40 and 50.

  (2) When the user is gripping the left hand grip 40 and the right hand grip 50, (a) out of the strain gauge as the sensor 43 of the left hand grip 40, the output signal is a predetermined threshold output. Of strain gauges (a plurality of sensors) exceeding the predetermined number, and (b) strain gauges of which the output signal exceeds a predetermined threshold output among the strain gauges as the sensor part 53 of the right-hand grip part 50 ( If the number of sensors is less than the predetermined number, it is determined that the left hand grip portion 40 is gripped by the right hand and the right hand grip portion 50 is gripped by the left hand.

  Since the sensor units 43 and 53 in the present embodiment are composed of five strain gauges indicated by 43a to 43e and 53a to 53e as the same number and a plurality of sensors, respectively, the predetermined number is the same as the above. (3 sheets) is set, and the output value (mv / V) similar to the above is set for the predetermined threshold output. Accordingly, (a) of the five strain gauges 43a, 43b, 43c, 43d, and 43e of the left hand grip 40, the number of strain gauges whose output signal exceeds the predetermined threshold output is less than 3, and (b ) Among the five strain gauges 53a, 53b, 53c, 53d, 53e of the right-hand grip unit 50, when the number of strain gauges whose output signal exceeds a predetermined threshold output is less than 3, the determination unit 26 It is determined that the user is gripping the left and right grip portions 40 and 50 by mistake, that is, the left and right grip portions 50 are gripped by the left hand and the left hand grip portion 40 is gripped by the right hand. To do. As shown in FIG. 10C, when the user erroneously grips the right hand grip 50 with the left hand, the sensor unit 53 is covered with the finger side having a small contact area, so that the strain gauge to be contacted In FIG. 10C, the thumb of the left hand of the user contacts only one of the strain gauges 53a. At this time, the strain gauge 53a is deformed by the gripping pressure of the user and changes its resistance value. However, since the strain gauges 43b to 43e that are not in contact have no gripping pressure, their resistance values are almost the same. It does not change. Therefore, an output exceeding the predetermined threshold output can be detected from the bridge circuit 53Ba including the strain gauge 53a, and the number of strain gauges whose output signal exceeds the predetermined threshold output is less than the predetermined number (three). The same applies to the case where the user erroneously grips the left hand grip 40 with the right hand. As a result, the determination unit 26 determines that the user is gripping the left and right grips 40 and 50 by mistake.

  The predetermined number, which is a threshold for the number of strain gauges (a plurality of sensors) whose output signal exceeds a predetermined threshold output, may be appropriately set according to the number and arrangement of strain gauges. In addition, since the size of the user's hand varies depending on the age in particular, for example, the predetermined number when the user's age is 12 years old or less is smaller than the predetermined number when the user's age is over 12 years old. Change it so that you can make a better decision.

  When the determination unit 26 determines that the user has mistakenly grasped the left and right grip units 40 and 50 (YES in step S105), the control unit 29 switches the left and right hand electrode functions (step S106). That is, the control unit 29 that has received the determination result by the determination unit 26 uses the left-hand energization electrode 42 and the measurement electrode 41 as the right-hand energization electrode 52 and the measurement electrode 51 with respect to the electrode switching unit 63. An instruction signal for switching the functioning electrode 52 and the measurement electrode 51 to function as the left-hand conduction electrode 42 and the measurement electrode 41 is output. More specifically, the electrode switching unit 63 is assumed to be in contact with the measurement electrode 41 and the energization electrode 42 and the user's right hand, which are assumed to be in contact with the user's left hand before switching. After switching the assumed measurement electrode 51 and energization electrode 52, the measurement electrode 41 and energization electrode 42 are in contact with the user's right hand, and the measurement electrode 51 and energization electrode 52 are the user's right hand. The electrode connected to the power supply unit 61 and the voltage measurement unit 62 is switched in order to perform current application and voltage measurement using each electrode as being in contact with the left hand.

That is, the electrodes are switched so that the following current supply and potential difference measurement can be executed.
(1) Whole body bioimpedance is measured by supplying current using the energization electrode 52 and the energization electrode 31a and touching the left hand in the current path flowing through the left hand, left arm, chest, abdomen, left leg, and left foot. A potential difference is measured between the measuring electrode 51 and the measuring electrode 31b in contact with the left foot.
(2) The measurement of the bioimpedance of the right lower limb is performed by supplying current using the energization electrode 42 and the energization electrode 32a, and in the current path flowing through the right hand, right arm, chest, abdomen, right leg, and right foot, A potential difference is measured between the measurement electrode 31b in contact with the measurement electrode 32b in contact with the right foot.
(3) The measurement of the bioimpedance of the left lower limb is performed by supplying current using the energization electrode 52 and the energization electrode 31a, and in the current path flowing through the left hand, left arm, chest, abdomen, left leg, and left foot. A potential difference is measured between the measurement electrode 31b in contact with the measurement electrode 32b in contact with the right foot.
(4) In the measurement of the bioimpedance of the upper right limb, current is supplied using the energizing electrode 42 and the energizing electrode 32a, and in the current path flowing through the right hand, right arm, chest, abdomen, right leg, and right foot, A potential difference is measured between the measuring electrode 51 in contact with the measuring electrode 41 in contact with the right hand.
(5) The measurement of the bioimpedance of the left upper limb is performed by supplying current using the energization electrode 52 and the energization electrode 31a, and in the current path flowing through the left hand, left arm, chest, abdomen, left leg, and left foot. A potential difference is measured between the measuring electrode 51 in contact with the measuring electrode 41 in contact with the right hand.

  After the process of step S106, or when the determination unit 26 determines that the user is correctly gripping the left and right grips 40, 50 (NO in step S105), the control unit 29 sets the energization electrodes 31a, 32a. , 42 and 52, a predetermined current is supplied to the user's body using a predetermined electrode (step S107). The control unit 29 measures a voltage (potential difference) in the user's whole body and each body part by using a predetermined electrode among the measurement electrodes 31b and 32b and the measurement electrodes 41 and 51, and uses the measured value as a measurement value. Based on this, the calculation unit 24 is made to calculate the bioimpedance of the user (step S108). Further, the control unit 29 causes the calculation unit 24 to calculate various biological information (such as fat percentage) using the body weight acquired in step S102, the bioelectrical impedance of the whole body and each body part calculated in step S108, and the like ( Step S109). The control unit 29 displays the measurement result of the biological information on the display unit 21 (step S110), and then ends the operation of the body composition meter 10.

With the configuration as described above, the following effects are achieved according to the first embodiment.
(1) Since the user can determine whether the left hand electrode is in contact with the left hand and the right hand electrode is in contact with the left hand, the user can turn the left hand grip portion and the right hand grip portion with his left and right hands. Even when it is gripped, it can be determined that the hand is gripped with the opposite hand, and thereby a correct measurement result, in particular, bioimpedance for each body part can be obtained.
(2) Especially when the user is gripping the left hand grip and right hand grip with left and right hands, the left and right hand electrode functions are switched. A correct measurement result can be obtained without forcing the operation.
(3) Further, since it is not necessary to separately provide a structure for preventing the left and right grip parts from being held in the holding structure, which has been provided in order to avoid a mistake in holding as in the prior art, the left hand grip part and the right hand The exterior parts of the grip part can be shared, which helps to reduce the manufacturing cost.

Below, the modification of 1st Embodiment is demonstrated.
<First Modification>
FIGS. 11A and 11B are diagrams showing the configuration of the left hand grip 140 in the first modification, where FIG. 11A is a left side view, FIG. 11B is a right side view, and FIG. It is a figure which shows the structure of the grip part 150, Comprising: (a) is a left view, (b) is a right view.

  The left-hand grip portion 40 and the right-hand grip portion 50 of the first embodiment described above have the strain gauges 43a to 43e and 53a to 53e arranged on the outside in a state where the measurement electrodes 41 and 51 are arranged on the front side. It was a thing. Each of the left-hand grip part 140 (see FIG. 11) and the right-hand grip part 150 (see FIG. 11) according to the first modification includes a sensor part that outputs a signal corresponding to the gripping state by the user. It is the same as that of the above-mentioned 1st Embodiment that it is arrange | positioned in the space between the electrodes 142 and 152 for electricity supply and the electrodes 141 and 151 for measurement along the longitudinal direction of the grip part 140 and the grip part 150 for right hands. However, it differs in the following points. The sensor unit in the first modification includes a sensor unit 143 of the left hand grip unit 140 provided in the space on the right side when the left hand grip unit 140 is viewed from the user side (Y direction in FIG. 1), and the right hand. And the sensor part 153 of the grip part 150 for the right hand provided in the space on the left side when the grip part 150 for use is viewed from the user side (Y direction in FIG. 1).

In other words, the left-hand grip portion 140 and the right-hand grip portion 150 are energized electrodes 142 and 152 when the measurement electrodes 141 and 151 are held on the front side with respect to the user riding on the placement portion 11a. Are arranged on the back side, and the sensor units 143 and 153 are arranged so as to be at predetermined positions inside.
The sensor part 143 of the left-hand grip part 140 and the sensor part 153 of the right-hand grip part 150 are each composed of the same number and a plurality of sensors. In the first modification, the sensor unit 143 has five pieces of distortion arranged at equal intervals along the longitudinal direction (Z direction in FIG. 11) of the left hand grip unit 140, as in the first embodiment. Gauges 143a, 143b, 143c, 143d, and 143e are provided. Similarly to the sensor unit 143, the sensor unit 153 includes five strain gauges 153a, 153b, 153c, 153d, which are arranged at equal intervals along the longitudinal direction of the right hand grip unit 150 (Z direction in FIG. 12). 153e.

  The sensor unit according to the present invention is not limited to the above configuration, and the sensor unit 143 of the left hand grip unit 140 is a case where the user grips the left hand grip unit 140 with the left hand. The sensor portion 153 of the right hand grip 150 is covered by the right hand fingertip when the user grips it with the right hand on the peripheral surface of the right hand grip 150. It suffices if it is provided at a position to be touched.

  The left-hand grip 140 and the right-hand grip 150 have the same shapes as the left-hand grip 40 and the right-hand grip 50 of the first embodiment, except for the strain gauge arrangement. In addition, since the configuration other than the left hand grip 140 and the right hand grip 150 is the same as that of the body composition meter 10 of the first embodiment, the description thereof is omitted.

  The flow of biometric measurement by the body composition meter according to the first modification is the same as the flow of processing in the first embodiment shown in FIG. 9 except for the following points.

  In the first modification, the strain gauges 143a to 143e and 153a to 153e are arranged on the inner side, and therefore, an example of the determination is performed as follows. The output signal of the sensor unit 143 of the left hand grip unit 140 when the user is gripping the left hand grip unit 140 and the right hand grip unit 150 (for example, the total output of the bridge circuits 143Ba to 143Be) and the right hand grip When the output signal of the sensor unit 153 of the unit 150 (for example, the total output of the bridge circuits 153Ba to 153Be) is less than the predetermined threshold value (1), the left hand grip unit 140 is moved by the left hand and the right hand grip unit. 150 is determined to be gripped by the right hand. (2) If both are equal to or greater than the predetermined threshold, it is determined that the left hand grip 140 is gripped by the right hand and the right hand grip 150 is gripped by the left hand. As another example of the determination, the following is performed.

(1) When the user is gripping the left-hand grip part 140 and the right-hand grip part 150, (a) the output signal of the strain gauge as the sensor part 143 of the left-hand grip part 140 is a predetermined threshold value output. Of strain gauges (a plurality of sensors) exceeding the predetermined number, and (b) strain gauges of which output signal exceeds a predetermined threshold output among the strain gauges as the sensor unit 153 of the right-hand grip unit 150 ( When the number of sensors is less than the predetermined number, it is determined that the left hand grip 140 is held by the left hand and the right hand grip 150 is held by the right hand. Accordingly, (a) among the bridge circuits 143Ba to 143Be including the strain gauges 143a to 143e of the left hand grip portion 140, the number of strain gauges related to the bridge circuit whose output signal exceeds a predetermined threshold output is less than three. (B) Of the bridge circuits 153Ba to 153Be including the strain gauges 153a to 153e of the right-hand grip 150, the number of strain gauges related to the bridge circuit whose output signal exceeds a predetermined threshold output is less than 3. The discriminator 26 correctly grasps the left and right grips 140 and 150 by the user. That is, the user grasps the left hand grip 140 with the left hand and makes the right hand grip 150 with the right hand. It is determined that it is gripped.

(2) When the user is gripping the left-hand grip part 140 and the right-hand grip part 150, (a) out of the strain gauge as the sensor part 143 of the left-hand grip part 140, the output signal is a predetermined threshold value output. Of strain gauges (a plurality of sensors) exceeding the predetermined number, and (b) strain gauges whose output signals exceed a predetermined threshold output among the strain gauges as the sensor part 153 of the right-hand grip part 150 ( If the number of sensors is equal to or greater than the predetermined number, it is determined that the left hand grip 140 is held by the right hand and the right hand grip 150 is held by the left hand. Accordingly, (a) of the bridge circuits 143Ba to 143Be including the strain gauges 143a to 143e of the left-hand grip 140, the number of strain gauges related to the bridge circuit whose output signal exceeds a predetermined threshold output is three or more. (B) Of the bridge circuits 153Ba to 153Be including the strain gauges 153a to 153e of the right-hand grip 150, the number of strain gauges related to the bridge circuit whose output signal exceeds a predetermined threshold output is three or more. The discriminating unit 26 has the user gripping the left and right grips 140 and 150 by mistake, that is, the user grips the right hand grip 150 by the left hand and the left hand grip 140 by the right hand. It is determined that it is gripped.

<Second Modification>
FIGS. 13A and 13B are diagrams showing the configuration of the left hand grip 240 in the second modification, where FIG. 13A is a left side view, FIG. 13B is a right side view, and FIG. 14 is a right hand use in the second modification. FIGS. 15A and 15B are diagrams illustrating a configuration of the grip unit 250, where FIG. 15A is a left side view, FIG. 15B is a right side view, and FIG. It is a block diagram which shows the connection until.

  Each of the left-hand grip part 240 (see FIG. 13) and the right-hand grip part 250 (see FIG. 14) according to the second modification includes a sensor part that outputs a signal corresponding to the gripping state by the user. It is the same as the first embodiment described above in that it is arranged in the space between the energizing electrodes 242, 252 and the measuring electrodes 241, 251 along the longitudinal direction of the grip part 240 and the right hand grip part 250. However, it differs in the following points. The sensor part in the second modified example includes a first sensor part 243 of the left hand grip part 240 provided in the left space when the left hand grip part 240 is viewed from the user side (Y direction in FIG. 1), and The second sensor portion 273 of the left hand grip portion 240 provided in the right space and the right hand grip portion 250 when viewed from the user side (Y direction in FIG. 1) are provided in the right space. A third sensor portion 253 of the right hand grip portion 250 and a fourth sensor portion 283 of the right hand grip portion 250 provided in the left space.

That is, the left-hand grip part 240 and the right-hand grip part 250 are energized electrodes 242 and 252 when the measurement electrodes 241 and 251 are held on the near side with respect to the user who rides on the placement part 11a. Are arranged on the back side, and the sensor units 243 and 253 are arranged so as to be at predetermined positions on the outer side and the inner side, respectively.
The first sensor unit 243 and the second sensor unit 273 of the left hand grip unit 240, and the third sensor unit 253 and the third sensor unit 283 of the right hand grip unit 250 are configured by the same number and a plurality of sensors, respectively. In the second modification, the first sensor parts 243 are arranged at equal intervals along the longitudinal direction of the left hand grip part 240 (the Z direction in FIG. 13), similarly to the sensor part 43 of the first embodiment described above. The second sensor unit 247 includes five strain gauges 243a, 243b, 243c, 243d, and 243e, and the second sensor unit 247 is similar to the sensor unit 143 of the first modification of the first embodiment described above. There are provided five strain gauges 273a, 273b, 273c, 273d, and 273e arranged at equal intervals along the longitudinal direction (Z direction in FIG. 13). Similarly to the sensor unit 53 of the first embodiment described above, the third sensor unit 253 has five distortions arranged at equal intervals along the longitudinal direction of the left-hand grip unit 250 (Z direction in FIG. 14). Gauges 253a, 253b, 253c, 253d, and 253e are provided, and the fourth sensor unit 283 is similar to the sensor unit 153 of the first modification of the first embodiment described above in the longitudinal direction of the left hand grip unit 250 (see FIG. 13). The five strain gauges 283a, 283b, 283c, 283d, and 283e are provided at equal intervals along the (Z direction).

  The sensor unit according to the present invention is not limited to the above configuration, and the first sensor unit 243 of the left-hand grip unit 240 is gripped by the user with the left hand of the peripheral surface of the left-hand grip unit 240. In this case, the second sensor part 273 is provided at a position covered with the left palm, and the second sensor part 273 is provided at a position covered with the fingertip side of the left hand, and the third sensor part 253 of the right hand grip part 250 is provided with a right hand grip. Of the peripheral surface of the portion 250, the fourth sensor portion 283 may be provided at a position covered by the palm of the right hand when the user holds it with the right hand, and at a position covered by the fingertip side of the right hand.

  The left-hand grip part 240 and the right-hand grip part 250 have the same shapes as the left-hand grip part 40 and the right-hand grip part 50 of the first embodiment except for the arrangement of strain gauges. In addition, since the configuration other than the left hand grip 240 and the right hand grip 250 is the same as that of the body composition meter 10 of the first embodiment, the description thereof is omitted.

  As shown in FIG. 15, the strain gauge 243a constitutes a bridge circuit 243Ba together with the fixed resistors 244R1, 244R2, and 244R3. A voltage is applied to the bridge circuit 243Ba from the power supply 244V, and the output from the bridge circuit 243Ba Is amplified by the amplifier 245, converted into a digital signal by the A / D converter 246, and output to the control unit 29. The strain gauge 273a forms a bridge circuit 273Ba together with the fixed resistors 274R1, 274R2, and 274R3. A voltage is applied to the bridge circuit 273Ba from the power supply 274V, and the output from the bridge circuit 273Ba is amplified by the amplifier 275. Then, it is converted into a digital signal by the A / D converter 276 and output to the control unit 29. The strain gauge 253a forms a bridge circuit 253Ba together with the fixed resistors 254R1, 254R2, and 254R3. A voltage is applied to the bridge circuit 253Ba from the power supply 254V, and an output from the bridge circuit 253Ba is amplified by the amplifier 255. Then, it is converted into a digital signal by the A / D converter 256 and output to the control unit 29. The strain gauge 283a forms a bridge circuit 283Ba together with the fixed resistors 284R1, 284R2, and 284R3. A voltage is applied to the bridge circuit 283Ba from the power supply 284V, and the output from the bridge circuit 283Ba is amplified by the amplifier 285. Then, it is converted into a digital signal by the A / D converter 286 and output to the control unit 29. The strain gauges 243b to 243e are the same as the strain gauge 243a, the strain gauges 273b to 273e are the same as the strain gauge 273a, and the strain gauges 253b to 253e are the same as the strain gauge 253a. Similarly to the strain gauge 283a, the gauge 283e constitutes bridge circuits 243Bb to 243Be, 273Bb to 273Be, 253Bb to 253Be, and 283Bb to 283Be, respectively, and each output is supplied to the control unit 29 via an amplifier and an A / D converter. Is output.

The flow of biological measurement by the body composition meter according to the second modification is the same as the flow of processing in the first embodiment shown in FIG. 9 except for the following points.
In the second modification, strain gauges are arranged on both sides of the measurement electrode and the energization electrode, and therefore the determination by the determination unit 26 is performed as follows, for example.

  (1) When the user is gripping the left hand grip part 240 and the right hand grip part 250, (a) the output signal of the first sensor part 243 is larger than the output signal of the second sensor part 273, and (B) When the output signal of the third sensor unit 253 is larger than the output signal of the fourth sensor unit 283, the left hand grip unit 204 is gripped by the left hand and the right hand grip unit 250 is gripped by the right hand. Determine. Therefore, (a) the output from the first sensor unit 273 outside the left hand grip unit 240 (the total output of the bridge circuits 243Ba to 243Be) is the output from the second sensor unit 243 inside (the bridge circuits 273Ba to 273Be). And (b) the output from the third sensor unit 253 outside the right hand grip 250 (the total output from the bridge circuits 253Ba to 253Be) is the fourth sensor unit 283 on the inner side. Is larger than the output (the total output of the bridge circuits 283Ba to 283Be), the determination unit 26 correctly holds the left and right grips 240 and 250, that is, without making a mistake in the left and right. It is determined that the left hand grip portion 240 is gripped by the left hand and the right hand grip portion 250 is gripped by the right hand.

  (2) When the user is gripping the left hand grip part 240 and the right hand grip part 250, (a) the output signal of the first sensor part 243 is smaller than the output signal of the second sensor part 273, and (B) When the output signal of the third sensor unit 253 is smaller than the output signal of the fourth sensor unit 283, the left hand grip unit 204 is gripped by the right hand and the right hand grip unit 250 is gripped by the left hand. Determine. Therefore, (a) the output from the first sensor unit 273 outside the left hand grip unit 240 (the total output of the bridge circuits 243Ba to 243Be) is the output from the second sensor unit 243 inside (the bridge circuits 273Ba to 273Be). The output from the third sensor unit 253 on the outer side of the right hand grip unit 250 (the total output of the bridge circuits 253Ba to 253Be) is smaller than the output of the fourth sensor unit 283 on the inner side. Is smaller than the output (the total of the outputs of the bridge circuits 283Ba to 283Be), the determination unit 26 erroneously grips the left and right grips 240, 250. It is determined that the left hand grip 240 is held with the right hand and the right hand grip 250 is held with the left hand.

  When the output signal of the first sensor unit 243 and the output signal of the second sensor unit 273 are equal, and when the output signal of the third sensor unit 253 and the output signal of the fourth sensor unit 283 are equal, The display unit 21 terminates the measurement process without determining with which hand the user is holding the grips 240 and 250, or re-grips the grips 240 and 250 to the user. The guidance display may be performed.

Second Embodiment
Hereinafter, a second embodiment of the present invention will be described. The second embodiment is different from the first embodiment in that an optical sensor is used as a sensor unit instead of the strain gauge. Other configurations are the same as those in the first embodiment, and the same reference numerals are used for the same members, and detailed descriptions thereof are omitted.
FIG. 16A is a left side view showing the configuration of the left hand grip portion of the second embodiment, FIG. 16B is a left side view showing the configuration of the right hand grip portion, and FIG. 17 is a sensor in the second embodiment. It is a block diagram which shows the connection from a part to a control part.

  A signal corresponding to the gripping state by the user is output to each of the left-hand grip 340 (see FIG. 16A) and the right-hand grip 350 (see FIG. 16B) according to the second embodiment. An optical sensor as a sensor unit is disposed in a space between the energization electrodes 342 and 352 and the measurement electrodes 341 and 351 along the longitudinal direction of the left hand grip unit 340 and the right hand grip unit 350. Further, the sensor unit in the second embodiment includes a sensor unit 343 of the left hand grip unit 340 provided in the left space when the left hand grip unit 340 is viewed from the user side (Y direction in FIG. 1). And a sensor part 353 of the right-hand grip part 350 provided in the space on the right side when the right-hand grip part 350 is viewed from the user side (Y direction in FIG. 1).

That is, the left-hand grip 340 and the right-hand grip 350 are energized electrodes 342 and 352 when the measurement electrodes 341 and 351 are held on the front side with respect to the user who rides on the placement unit 11a. Are arranged on the back side, and the sensor units 343 and 353 are arranged so as to be at predetermined positions on the outside.
The sensor part 343 of the left-hand grip part 340 and the sensor part 353 of the right-hand grip part 350 are each configured by the same number and a plurality of sensors. In the second embodiment, the sensor unit 343 includes ten optical sensors 343a, 343b, 343c, which are arranged at equal intervals along the longitudinal direction of the left-hand grip unit 340 (Z direction in FIG. 16A). 343d, 343e, 343f, 343g, 343h, 343i, 343j. Similarly to the sensor unit 343, the sensor unit 353 includes ten optical sensors 353a, 353b, and 353c arranged at equal intervals along the longitudinal direction of the right-hand grip unit 350 (Z direction in FIG. 16B). 353d, 353e, 353f, 353g, 353h, 353i, 353j. The optical sensor used here is, for example, a sensor that can output in accordance with the intensity of incident light. In the present embodiment, whether or not the optical sensor is covered by the user's hand that holds the grip portions 340 and 350. Accordingly, the gripping state is determined using the fact that the output is different between the state in which the incidence of light to the optical sensor is blocked and the state in which the light sensor is not blocked. For example, the sensor units 343 and 353 are arranged such that 10 optical sensors are arranged at intervals of 10 mm so that the length from the optical sensors 343a and 353a at one end to the optical sensors 343j and 353j at the other end becomes 100 mm. Should be provided.

  The sensor unit according to the present invention is not limited to the above-described configuration, and the sensor unit 343 of the left hand grip unit 340 is a case where the user grips the left hand grip unit 340 with the left hand. The sensor portion 353 of the right hand grip portion 350 is covered with the right palm portion of the peripheral surface of the right hand grip portion 350 when the user grips it with the right hand. It suffices if it is provided at a position to be touched.

  The left hand grip portion 340 and the right hand grip portion 350 have the same shapes as the left hand grip portion 40 and the right hand grip portion 50 of the first embodiment except for the optical sensor. In addition, since the configuration other than the left hand grip 340 and the right hand grip 350 is the same as that of the body composition meter 10 of the first embodiment, the description thereof is omitted.

  As shown in FIG. 17, the optical sensor 343a and the fixed resistors 344R1 and 344R2 constitute a detection circuit 343Ca. A voltage is applied to the detection circuit 343Ca from a power supply 344V, and an output signal from the detection circuit 343Ca is It is output to the control unit 29. Like the optical sensor 343a, the optical sensors 343b to 343j constitute detection circuits 343Cb (not shown in FIG. 17) to 343Cj, and output signals thereof are output to the control unit 29. The optical sensor 353a forms a detection circuit 353Ca together with the fixed resistors 354R1 and 354R2. A voltage is applied from the power source 354V to the detection circuit 353Ca, and an output signal from the detection circuit 353Ca is output to the control unit 29. Is done. Like the optical sensor 353a, the optical sensors 353b to 353j constitute detection circuits 353Cb (not shown in FIG. 17) to 353Cj, and output signals thereof are output to the control unit 29.

The flow of the biological measurement by the body composition meter according to the second embodiment is the same as the flow of processing in the first embodiment shown in FIG. 9 except for the following points.
In the second embodiment, the determination unit 26 determines whether the user is holding the left hand grip 340 and the right hand grip 350 with the left or right hand based on the output signals of the sensor units 343 and 353. For example, the determination is made as follows.

  (1) When the user is gripping the left hand grip 340 and the right hand grip 350, (a) the output signal of the optical sensor as the sensor 343 of the left hand grip 340 is a predetermined threshold output. (B) Among the optical sensors as the sensor unit 353 of the right-hand grip unit 350, the number of the optical sensors (a plurality of sensors) exceeding the predetermined number is greater than the predetermined threshold output. If the number of sensors is equal to or greater than the predetermined number, it is determined that the left hand grip 340 is held by the left hand and the right hand grip 350 is held by the right hand.

  Since the sensor units 343 and 353 in the present embodiment are configured by ten optical sensors indicated by 343a to 343j and 353a to 353j as the same number and a plurality of sensors, for example, the predetermined number is seven. Can be set as Note that the predetermined threshold output depends on, for example, the intensity of the incident light on the optical sensor, which is suitable for determining that the optical sensor is blocked by the user's hand and that the incident light on the optical sensor is hindered. Set the output value. Accordingly, (a) among the detection circuits 343Ca to 343Cj including the optical sensors 343a to 343j of the left hand grip 340, the output signal exceeds a predetermined threshold output (in the present embodiment, the output is particularly performed until the predetermined threshold output is exceeded). The number of photosensors related to the detection circuit is 7 or more. (B) Among the detection circuits 353Ca to 353Cj including the photosensors 353a to 353j of the right hand grip unit 350, the output signal is predetermined. When the number of photosensors related to the detection circuit that exceeds the threshold output (in this embodiment, the output value has decreased particularly until the predetermined threshold output is exceeded) is 7 or more, the determination unit 26 allows the user to The grip part 340, 350 of the right hand, that is, the right hand Gripping the hand grip portion 350, and not. When the user correctly grips the left hand grip 340 with the left hand (see FIGS. 10A and 10B), the sensor unit 343 is covered with the palm side having a large contact area, so that many optical sensors are used. Cover. At this time, the intensity of the incident light is reduced in the optical sensor covered with the hand, but the intensity of the incident light hardly changes in the optical sensor not covered with the hand. Therefore, it is possible to detect an output that exceeds a predetermined threshold output (that is, the output value has decreased until it exceeds the predetermined threshold output) from the detection circuit including each of the photosensors covered with hands, and light whose output signal exceeds the predetermined threshold output. The number of sensors can be counted. The same applies to the case where the user correctly holds the right hand grip portion 350 with the right hand. As a result of the counting, when the number is equal to or greater than the predetermined number (seven), the determination unit 26 determines that the user is correctly holding the left and right grips 340 and 350.

  (2) When the user is gripping the left hand grip 340 and the right hand grip 350, (a) the output signal of the optical sensor as the sensor 343 of the left hand grip 340 is a predetermined threshold output (B) Among the optical sensors as the sensor unit 353 of the right-hand grip unit 350, the number of optical sensors (a plurality of sensors) exceeding the predetermined number is an optical sensor whose output signal exceeds a predetermined threshold output ( If the number of sensors is less than the predetermined number, it is determined that the left hand grip 340 is held by the right hand and the right hand grip 350 is held by the left hand.

  Since the sensor units 343 and 353 in the present embodiment are configured by ten optical sensors indicated by 343a to 343j and 353a to 353j as the same number and a plurality of sensors, the predetermined number is the same as the above. (7) is set, and the output value similar to the above is set for the predetermined threshold output. Accordingly, (a) among the detection circuits 343Ca to 343Cj including the optical sensors 343a to 343j of the left hand grip 340, the output signal exceeds a predetermined threshold output (in the present embodiment, the output is particularly performed until the predetermined threshold output is exceeded). The number of photosensors related to the detection circuit is less than 7 (b), and (b) out of the detection circuits 353Ca to 353Cj including the photosensors 353a to 353j of the right hand grip unit 350, the output signal is predetermined. When the number of photosensors related to the detection circuit that exceeds the threshold output (in this embodiment, the output value has decreased particularly until the predetermined threshold output is exceeded) is less than 7, the determination unit 26 allows the user to Grip part 340, 350 is erroneously gripped, that is, the left hand grip part 340 is gripped with the right hand and the right hand grip is gripped with the left hand. Tsu gripping the flop 350, and to determine. When the user accidentally grips the left hand grip 340 with the right hand (see FIG. 10C), the sensor 343 is covered with the finger side (especially the thumb) having a small contact area, so that the light to be covered is covered. There are few sensors. At this time, the intensity of the incident light is reduced in the optical sensor covered with the hand, but the intensity of the incident light hardly changes in the optical sensor not covered with the hand. Therefore, it is possible to detect an output that exceeds a predetermined threshold output (that is, the output value has decreased until it exceeds the predetermined threshold output) from the detection circuit including each of the photosensors covered with hands, and light whose output signal exceeds the predetermined threshold output. The number of sensors can be counted. The same applies to the case where the user correctly holds the right hand grip portion 350 with the right hand. If the count is less than the predetermined number (seven), the determination unit 26 determines that the user is gripping the left and right grips 340 and 350 by mistake.

Contrary to the above example, the predetermined threshold output is an optical sensor that is suitable for determining that the optical sensor is not covered by the user's hand and that the incidence of light on the optical sensor is not hindered. You may set the output value according to the intensity | strength of incident light. In this case, the following determination may be performed.
(1) (a) Out of the detection circuits 343Ca to 343Cj including the optical sensors 343a to 343j of the left-hand grip 340, the output signal exceeds a predetermined threshold output (the optical sensor is not covered by the user's hand). The number of photosensors related to the detection circuit is less than 4, and (b) among the detection circuits 353Ca to 353Cj including the photosensors 353a to 353j of the right hand grip unit 350, the output signal exceeds a predetermined threshold output ( When the number of photosensors related to the detection circuit is less than four (the photosensors are not covered by the user's hand), the discrimination unit 26 correctly grasps the left and right grips 340 and 350. That is, it is determined that the left hand grip 340 is gripped by the left hand and the right hand grip 350 is gripped by the right hand without making a mistake in the left and right. That.
(2) (a) Out of the detection circuits 343Ca to 343Cj including the optical sensors 343a to 343j of the left-hand grip 340, the output signal exceeds a predetermined threshold output (the optical sensor is not covered by the user's hand). The number of photosensors related to the detection circuit is four or more, and (b) among the detection circuits 353Ca to 353Cj including the photosensors 353a to 353j of the right hand grip unit 350, the output signal exceeds a predetermined threshold output ( When the number of photosensors related to the detection circuit is four or more (the photosensors are not covered by the user's hand), the determination unit 26 causes the user to erroneously grip the left and right grips 340 and 350. That is, it is determined that the left hand grip 340 is gripped with the right hand and the right hand grip 350 is gripped with the left hand.

  Other configurations, operations, and effects are the same as those in the first embodiment.

Below, the modification of 2nd Embodiment is demonstrated.
<First Modification>
18A and 18B are diagrams showing the configuration of the left-hand grip 440 in the first modification of the second embodiment, wherein FIG. 18A is a left side view, FIG. 18B is a right side view, and FIG. It is a figure which shows the structure of the grip part 450 for right hands in the 1st modification of embodiment, (a) is a left view, (b) is a right view, FIG. 20 is the 1st modification of 2nd Embodiment. It is a block diagram which shows the connection from the sensor part in an example to a control part.

  Each of the left-hand grip 440 (see FIG. 18) and the right-hand grip 450 (see FIG. 19) according to the first modification includes a sensor unit that outputs a signal corresponding to the gripping state by the user. It is the same as the first embodiment described above in that it is disposed in the space between the energization electrodes 442 and 452 and the measurement electrodes 441 and 451 along the longitudinal direction of the grip portion 440 and the right hand grip portion 450. However, it differs in the following points. The sensor unit in the first modified example includes a first sensor unit 443 of the left hand grip unit 440 provided in the left space when the left hand grip unit 440 is viewed from the user side (Y direction in FIG. 1), and The second sensor portion 473 of the left hand grip portion 440 provided in the right space and the right hand grip portion 450 provided in the right space when viewed from the user side (Y direction in FIG. 1). A third sensor portion 453 of the right hand grip portion 450 and a fourth sensor portion 483 of the right hand grip portion 450 provided in the space on the left side.

That is, the left-hand grip 440 and the right-hand grip 450 are energized electrodes 442 and 452 when the measurement electrodes 441 and 451 are held on the front side with respect to the user who rides on the mounting portion 11a. Are arranged on the back side, and the sensor portions 443 and 453 are arranged so as to be at predetermined positions on the outer side and the inner side, respectively.
The first sensor unit 443 and the second sensor unit 473 of the left-hand grip unit 440 and the third sensor unit 453 and the third sensor unit 483 of the right-hand grip unit 450 are configured by the same number and a plurality of sensors, respectively. In the first modification, the first sensor parts 443 are arranged at equal intervals along the longitudinal direction of the left-hand grip part 440 (Z direction in FIG. 18), similarly to the sensor part 343 of the second embodiment described above. In addition, five optical sensors 443a, 443b, 443c, 443d, and 443e are provided, and the second sensor unit 473 is similar to the sensor unit 143 of the first modification of the first embodiment described above. There are five optical sensors 473a, 473b, 473c, 473d, and 473e arranged at equal intervals along the longitudinal direction (Z direction in FIG. 18). Similarly to the sensor unit 353 of the second embodiment described above, the third sensor unit 453 includes five light beams arranged at equal intervals along the longitudinal direction of the left-hand grip unit 450 (Z direction in FIG. 19). Sensors 453a, 453b, 453c, 453d, and 453e are provided. The fourth sensor unit 483 is similar to the sensor unit 153 of the first modification of the first embodiment described above in the longitudinal direction of the left hand grip unit 450 (see FIG. 19). 5 optical sensors 483a, 483b, 483c, 483d, and 483e arranged at equal intervals along the (Z direction). As an example, the sensor units 443 and 453 are arranged such that five optical sensors are arranged at intervals of 25 mm so that the length from the optical sensors 443a and 453a at one end to the optical sensors 443e and 453e at the other end becomes 125 mm. Should be provided.

  The sensor unit according to the present invention is not limited to the above configuration, and the first sensor unit 443 of the left-hand grip unit 440 is gripped by the user with the left hand on the peripheral surface of the left-hand grip unit 440. The second sensor part 473 is provided at a position covered with the left hand fingertip side, and the third sensor part 453 of the right hand grip part 450 is provided with a right hand grip. Of the peripheral surface of the portion 450, the fourth sensor portion 483 only needs to be provided at a position covered with the palm of the right hand when the user holds it with the right hand, and at a position covered with the fingertip side of the right hand.

  The left-hand grip 440 and the right-hand grip 450 have the same shapes as the left-hand grip 340 and the right-hand grip 350 in the second embodiment except for the arrangement of the optical sensor.

  As shown in FIG. 20, the optical sensor 443a constitutes a detection circuit 443Ca together with fixed resistors 444R1 and 444R2, and a voltage is applied to the detection circuit 443Ca from a power supply 444V, and an output signal from the detection circuit 343Ca is It is output to the control unit 29. The optical sensor 473a constitutes a detection circuit 473Ca together with the fixed resistors 474R1 and 474R2. A voltage is applied from the power supply 474V to the detection circuit 473Ca, and an output signal from the detection circuit 473Ca is output to the control unit 29. Is done. The optical sensor 453a constitutes a detection circuit 453Ca together with the fixed resistors 454R1 and 454R2, and a voltage is applied from the power source 454V to the detection circuit 453Ca, and an output signal from the detection circuit 453Ca is output to the control unit 29. Is done. The optical sensor 483a constitutes a detection circuit 483Ca together with the fixed resistors 484R1 and 484R2. A voltage is applied to the detection circuit 483Ca from the power supply 484V, and an output signal from the detection circuit 483Ca is output to the control unit 29. Is done. The optical sensors 443b to 443e are similar to the optical sensor 443a, the optical sensors 473b to 473e are similar to the optical sensor 473a, and the optical sensors 453b to 453e are similar to the optical sensor 453a. Similarly to the optical sensor 483a, the sensor 483e constitutes detection circuits 443Cb to 443Ce, 473Cb to 473Ce, 453Cb to 453Ce, and 483Cb to 483Ce, and the respective outputs are output to the control unit 29.

The flow of biometric measurement by the body composition meter according to the first modification is the same as the flow of processing in the first embodiment shown in FIG. 9 except for the following points.
In the first modified example, since the optical sensors are arranged on both sides of the measurement electrode and the energization electrode, the determination by the determination unit 26 is performed as follows, for example.

  (1) When the user is gripping the left hand grip 440 and the right hand grip 450, the output signal of the sensor parts 443, 453, 473, 483 of the left hand grip 440 outputs a predetermined threshold value. The number of optical sensors (a plurality of sensors) exceeding (a) the first sensor unit 453 is larger than the second sensor unit 473, and (b) the third sensor unit 453 is larger than the fourth sensor unit 483. If there are more, it is determined that the left hand grip 440 is held by the left hand and the right hand grip 450 is held by the right hand.

  (2) When the user is holding the left hand grip 440 and the right hand grip 450, the output signal of the sensor units 443, 453, 473, 483 of the left hand grip 440 outputs a predetermined threshold value. The number of optical sensors (a plurality of sensors) exceeds (a) the first sensor unit 453 is smaller than the second sensor unit 473, and (b) the third sensor unit 453 has a larger number than the fourth sensor unit 483. If there are fewer, it is determined that the left hand grip 440 is held by the right hand and the right hand grip 450 is held by the left hand.

  In addition, when the number of optical sensors whose output signals exceed the predetermined threshold output is equal in the first sensor unit 443 and the second sensor unit 473, and in the case where the third sensor unit 453 and the fourth sensor unit 483 are equal. Indicates that the user does not determine with which hand the grips 440 and 450 are held, and the measurement process is terminated, or the user is prompted to hold the grips 440 and 450 again. What is necessary is just to perform a guidance display on the part 21.

<Second Modification>
The left-hand grip 340 and the right-hand grip 350 according to the second embodiment described above are arranged such that the optical sensors 343a to 343j and 353a to 353j are arranged outside in a state where the measurement electrodes 341 and 351 are arranged on the front side. Met. Instead of this, the optical sensor may be arranged on the inner side in accordance with the first modification of the first embodiment (see FIG. 11).
In this case, the determination unit 26 determines whether the user is holding the left hand grip unit 340 and the right hand grip unit 350 by the left or right hand based on the output signal of the sensor unit, for example, as follows. Determine.

(1) When the user is gripping the left hand grip 340 and the right hand grip 350, (a) the output signal of the optical sensor as the sensor 343 of the left hand grip 340 is a predetermined threshold output. (B) Among the optical sensors as the sensor unit 353 of the right-hand grip unit 350, the number of optical sensors (a plurality of sensors) exceeding the predetermined number is an optical sensor whose output signal exceeds a predetermined threshold output ( If the number of sensors is less than the predetermined number, it is determined that the left hand grip 340 is held by the left hand and the right hand grip 350 is held by the right hand.
(2) When the user is gripping the left hand grip 340 and the right hand grip 350, (a) the output signal of the optical sensor as the sensor 343 of the left hand grip 340 is a predetermined threshold output (B) Among the optical sensors as the sensor unit 353 of the right-hand grip unit 350, the number of the optical sensors (a plurality of sensors) exceeding the predetermined number is greater than the predetermined threshold output. If the number of sensors is equal to or greater than the predetermined number, it is determined that the left hand grip 340 is held by the right hand and the right hand grip 350 is held by the left hand.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. When the determination unit 26 determines that the user has mistakenly held the left and right grip units 40 and 50 (YES in step S105 in FIG. 9), the control unit 29 is described in the first and second embodiments described above. Instead of switching the left and right hand electrode functions as described above (step S105 in FIG. 9), an alert process may be executed. Therefore, in the body composition meter according to the third embodiment, it is not necessary to include the electrode switching unit 63, and other configurations may be the same as those in the first embodiment and the second embodiment.

  The alert process is instructed by the control unit 29 according to the determination result by the determination unit 26. As the alert processing, for example, a predetermined guidance display is displayed on the display unit 21 or an alert sound is emitted from a speaker (not shown in the figure). What is necessary is just to notify that there is. If the program for executing the alert process is prepared in this manner, the user can have the grip unit correctly picked up, and a correct measurement result can be obtained. Other configurations, operations, and effects are the same as those in the first embodiment.

  In the body composition meter according to the first to third embodiments described above, the example in which the strain sensor or the optical sensor is used as the sensor unit has been described, but the present invention is not limited thereto, and the piezoelectric sensor, Other sensors such as an infrared sensor may be used. In the sensor area where the sensor unit is provided, the distribution in which the user's hand is in contact may be determined from the output distribution of the sensor.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or changed within the scope of the purpose of the improvement or the idea of the present invention.

  As described above, the biometric apparatus according to the present invention is useful for a body composition meter including four hand electrodes and four foot electrodes.

10 Body composition analyzer (biological measuring device)
DESCRIPTION OF SYMBOLS 11 Main body part 12 Support shaft 13 Display / operation unit 14,15 Holding part 21 Display part 22 Operation part 24 Calculation part 25 Memory | storage part 26 Discriminating part 27 Load cell 29 Control part 31a Current supply electrode 31b Measurement electrode 32a Current supply electrode 32b Measurement Electrode 40 Left-hand grip 41 Measurement electrode 42 Current-carrying electrode 43 Sensor 43B Bridge circuit 43a-43e Strain gauge 43s Space 44R1-44R3 Fixed resistance 44V Power supply 45 Amplifier 46 A / D converter 49 Cable 50 Right-hand grip 51 Electrode for Measurement 52 Electrode for Energization 53 Sensor Unit 53B Bridge Circuit 53a-53e Strain Gauge 54R1-54R3 Fixed Resistance 54V Power Supply 55 Amplifier 56 A / D Converter 59 Cable 60 Bioimpedance Measurement Unit 61 Power Supply Unit 62 Electricity Measuring unit 63 Electrode switching unit 63a Conducting electrode switching unit 63b Measuring electrode switching unit 140 Left hand grip unit 141 Measuring electrode 142 Conducting electrode 143 Sensor unit 143a to 143e Strain gauge 150 Right hand grip unit 151 Measuring electrode 152 Energizing Electrode 153 Sensor part 153a to 153e Strain gauge 240 Left hand grip part 241 Measurement electrode 242 Conductive electrode 243 First sensor part 243a to 243e Strain gauge 244R1 to 244R3 Fixed resistance 244V Power supply 245 Amplifier 246 A / D converter 250 Right hand Grip part 251 Measuring electrode 252 Conducting electrode 253 Third sensor part 253a to 253e Strain gauge 254R1 to 254R3 Fixed resistance 254V Power supply 255 Amplifier 256 A / D converter 273 Second sensor Part 273a to 273e Strain gauge 274R1 to 274R3 Fixed resistance 274V Power supply 275 Amplifier 276 A / D converter 283 Fourth sensor part 283a to 283e Strain gauge 284R1 to 284R3 Fixed resistance 284V Power supply 285 Amplifier 286 A / D converter 340 Left hand Grip part 341 Measuring electrode 342 Conducting electrode 343B Detection circuit 343 Sensor part 343a to 343j Optical sensor 344R1, 344R2 Fixed resistance 344V Power supply 350 Right hand grip part 351 Measuring electrode 352 Conducting electrode 353 Sensor part 353B Detection circuit 353a to 353j Optical sensor 354R1, 354R2 Fixed resistance 354V Power supply 440 Left hand grip 441 Measurement electrode 442 Conducting electrode 443 First sensor 443a-4 3e optical sensor 444R1, 444R2 fixed resistance 444V power supply 450 right hand grip 451 measurement electrode 452 energization electrode 453 third sensor part 453a to 453e optical sensor 454R1, 454R2 fixed resistance 454V power supply 473 third sensor part 473a to 473e optical sensor 474R2, 474R2 fixed resistance 474V power supply 483 4th sensor part 483a-483e optical sensor 484R2, 484R2 fixed resistance 484V power supply

Claims (11)

Left-hand energization electrode and measurement electrode spaced apart in the left-hand grip portion that can be gripped by the user, and right-hand energization electrode spaced apart in the right-hand grip portion that can be gripped by the user and In a biometric device comprising a measurement electrode, and measuring the bioimpedance of the user,
Each of the left hand grip part and the right hand grip part is provided with a sensor part that outputs a signal according to a gripping state by the user,
A biometric measurement device comprising: a determination unit configured to determine whether the user is holding the left hand grip unit and the right hand grip unit by the left or right hand based on an output signal of the sensor unit. apparatus.   The determination unit determines whether the sensor unit is covered by the palm side or finger side of the user when the user is holding the left hand grip unit and the right hand grip unit. It is determined based on the output signal of the sensor unit, and according to the determination result, it is determined whether the user is holding the left hand grip unit and the right hand grip unit by the left or right hand. The biometric apparatus according to claim 1, wherein the biometric apparatus is characterized.   The sensor unit is disposed between the energization electrode and the measurement electrode, of the peripheral surface of the left-hand grip unit and the peripheral surface of the right-hand grip unit. The biometric apparatus according to claim 1 or 2. When the user grips the peripheral surface of the left-hand grip portion, the left-hand first function electrode is disposed at a position where the thumb side contacts, and the second-hand second hand electrode is positioned at a position where the other finger side contacts. Functional electrodes are arranged,
When the user grips the peripheral surface of the right-hand grip portion, the right-hand first function electrode is disposed at a position where the thumb side comes into contact, and the second hand-use second electrode is placed at a position where the other finger side comes into contact. Functional electrodes are arranged,
The first function electrode functions as the measurement electrode and the second function electrode functions as the energization electrode, or the first function electrode functions as the energization electrode and for the second function An electrode is configured to function as the measurement electrode,
The sensor unit includes a sensor unit of the left hand grip unit provided at a position covered with a palm side of the left hand when a user grips with the left hand, of the peripheral surface of the left hand grip unit, and the right hand A sensor part of the grip part for the right hand provided at a position covered with the palm of the right hand when the user grips with the right hand, of the peripheral surface of the grip part,
The determination unit includes an output signal of a sensor unit of the left hand grip unit and an output signal of a sensor unit of the right hand grip unit when the user is holding the left hand grip unit and the right hand grip unit. However, if both are greater than or equal to a predetermined threshold, it is determined that the left hand grip is gripped by the left hand and the right hand grip is gripped by the right hand, and if both are less than the predetermined threshold, the left hand grip The biometric apparatus according to any one of claims 1 to 3, wherein the grip portion is determined to be gripped by a right hand and the right hand grip portion is gripped by a left hand. When the user grips the peripheral surface of the left-hand grip portion, the left-hand first function electrode is disposed at a position where the thumb side contacts, and the second-hand second hand electrode is positioned at a position where the other finger side contacts. Functional electrodes are arranged,
When the user grips the peripheral surface of the right-hand grip portion, the right-hand first function electrode is disposed at a position where the thumb side comes into contact, and the second hand-use second electrode is placed at a position where the other finger side comes into contact. Functional electrodes are arranged,
The first function electrode functions as the measurement electrode and the second function electrode functions as the energization electrode, or the first function electrode functions as the energization electrode and for the second function An electrode is configured to function as the measurement electrode,
The sensor unit includes a sensor unit of the left hand grip unit provided at a position covered with a palm side of the left hand when a user grips with the left hand, of the peripheral surface of the left hand grip unit, and the right hand A sensor part of the grip part for the right hand provided at a position covered with the palm of the right hand when the user grips with the right hand, of the peripheral surface of the grip part,
The sensor part of the grip part for the left hand and the sensor part of the grip part for the right hand are each composed of the same number and a plurality of sensors.
When the user is holding the left-hand grip and the right-hand grip,
Among the sensor units of the left-hand grip unit, the number of the plurality of sensors whose output signals exceed a predetermined threshold output is a predetermined number or more, and among the sensor units of the right-hand grip unit, the output signal is a predetermined threshold value. When the number of the plurality of sensors exceeding the output is a predetermined number or more, it is determined that the left hand grip portion is gripped by the left hand and the right hand grip portion is gripped by the right hand,
Among the sensor parts of the left hand grip part, the number of the plurality of sensors whose output signals exceed a predetermined threshold output is less than a predetermined number, and among the sensor parts of the right hand grip part, the output signal is a predetermined threshold value. When the number of the plurality of sensors exceeding the output is less than a predetermined number, it is determined that the left hand grip portion is gripped by a right hand and the right hand grip portion is gripped by a left hand. The biometric apparatus according to any one of claims 1 to 4. When the user grips the peripheral surface of the left-hand grip portion, the left-hand first function electrode is disposed at a position where the thumb side contacts, and the second-hand second hand electrode is positioned at a position where the other finger side contacts. Functional electrodes are arranged,
When the user grips the peripheral surface of the right-hand grip portion, the right-hand first function electrode is disposed at a position where the thumb side comes into contact, and the second hand-use second electrode is placed at a position where the other finger side comes into contact. Functional electrodes are arranged,
The first function electrode functions as the measurement electrode and the second function electrode functions as the energization electrode, or the first function electrode functions as the energization electrode and for the second function An electrode is configured to function as the measurement electrode,
The sensor unit includes a sensor unit of the left hand grip unit provided at a position covered with a fingertip side of the left hand when a user grips with the left hand, of the peripheral surface of the left hand grip unit, and the right hand A sensor part of the grip part for the right hand provided at a position covered by the fingertip side of the right hand when the user grips the grip part with the right hand,
The determination unit includes an output signal of a sensor unit of the left hand grip unit and an output signal of a sensor unit of the right hand grip unit when the user is holding the left hand grip unit and the right hand grip unit. However, if both are less than the predetermined threshold, it is determined that the left hand grip is gripped by the left hand and the right hand grip is gripped by the right hand. The biometric apparatus according to any one of claims 1 to 5, wherein it is determined that the grip portion is gripped by a right hand and the right hand grip portion is gripped by a left hand. When the user grips the peripheral surface of the left-hand grip portion, the left-hand first function electrode is disposed at a position where the thumb side contacts, and the second-hand second hand electrode is positioned at a position where the other finger side contacts. Functional electrodes are arranged,
When the user grips the peripheral surface of the right-hand grip portion, the right-hand first function electrode is disposed at a position where the thumb side comes into contact, and the second hand-use second electrode is placed at a position where the other finger side comes into contact. Functional electrodes are arranged,
The first function electrode functions as the measurement electrode and the second function electrode functions as the energization electrode, or the first function electrode functions as the energization electrode and for the second function An electrode is configured to function as the measurement electrode,
The sensor unit includes a sensor unit of the left hand grip unit provided at a position covered with a fingertip side of the left hand when a user grips with the left hand, of the peripheral surface of the left hand grip unit, and the right hand A sensor part of the grip part for the right hand provided at a position covered by the fingertip side of the right hand when the user grips the grip part with the right hand,
The sensor part of the grip part for the left hand and the sensor part of the grip part for the right hand are each composed of the same number and a plurality of sensors.
When the user is holding the left-hand grip and the right-hand grip,
Among the sensor parts of the left hand grip part, the number of the plurality of sensors whose output signals exceed a predetermined threshold output is less than a predetermined number, and among the sensor parts of the right hand grip part, the output signal is a predetermined threshold value. When the number of the plurality of sensors exceeding the output is less than a predetermined number, it is determined that the left hand grip portion is gripped by the left hand and the right hand grip portion is gripped by the right hand,
Among the sensor units of the left-hand grip unit, the number of the plurality of sensors whose output signals exceed a predetermined threshold output is a predetermined number or more, and among the sensor units of the right-hand grip unit, the output signal is a predetermined threshold value. When the number of the plurality of sensors exceeding the output is a predetermined number or more, it is determined that the left hand grip portion is gripped by a right hand and the right hand grip portion is gripped by a left hand. The biometric apparatus according to any one of claims 1 to 6. When the user grips the peripheral surface of the left-hand grip portion, the left-hand first function electrode is disposed at a position where the thumb side contacts, and the second-hand second hand electrode is positioned at a position where the other finger side contacts. Functional electrodes are arranged,
When the user grips the peripheral surface of the right-hand grip portion, the right-hand first function electrode is disposed at a position where the thumb side comes into contact, and the second hand-use second electrode is placed at a position where the other finger side comes into contact. Functional electrodes are arranged,
The first function electrode functions as the measurement electrode and the second function electrode functions as the energization electrode, or the first function electrode functions as the energization electrode and for the second function An electrode is configured to function as the measurement electrode,
The sensor unit includes a first sensor unit of the left hand grip unit provided in a position covered by a palm side of the left hand when a user grips with the left hand on a peripheral surface of the left hand grip unit and the left hand Of the peripheral surface of the left hand grip portion provided at the position covered by the fingertip side and the right hand grip portion, when the user grips with the right hand, the right hand palm side is covered. A third sensor part of the right hand grip part provided at a position and a fourth sensor part of the right hand grip part provided at a position covered by the fingertip side of the right hand,
When the user is holding the left-hand grip and the right-hand grip,
When the output signal of the first sensor unit is larger than the output signal of the second sensor unit and the output signal of the third sensor unit is larger than the output signal of the fourth sensor unit, the left hand It is determined that the grip part is gripped by the left hand and the right hand grip part is gripped by the right hand,
When the output signal of the first sensor unit is smaller than the output signal of the second sensor unit and the output signal of the third sensor unit is smaller than the output signal of the fourth sensor unit, the left hand The biometric apparatus according to any one of claims 1 to 7, wherein it is determined that the grip portion is gripped by a right hand and the right hand grip portion is gripped by a left hand. When the user grips the peripheral surface of the left-hand grip portion, the left-hand first function electrode is disposed at a position where the thumb side contacts, and the second-hand second hand electrode is positioned at a position where the other finger side contacts. Functional electrodes are arranged,
When the user grips the peripheral surface of the right-hand grip portion, the right-hand first function electrode is disposed at a position where the thumb side comes into contact, and the second hand-use second electrode is placed at a position where the other finger side comes into contact. Functional electrodes are arranged,
The first function electrode functions as the measurement electrode and the second function electrode functions as the energization electrode, or the first function electrode functions as the energization electrode and for the second function An electrode is configured to function as the measurement electrode,
The sensor unit includes a first sensor unit of the left hand grip unit provided in a position covered by a palm side of the left hand when a user grips with the left hand on a peripheral surface of the left hand grip unit and the left hand Of the peripheral surface of the left hand grip portion provided at the position covered by the fingertip side and the right hand grip portion, when the user grips with the right hand, the right hand palm side is covered. A third sensor part of the right hand grip part provided at a position and a fourth sensor part of the right hand grip part provided at a position covered by the fingertip side of the right hand,
The first sensor unit, the second sensor unit, the third sensor unit, and the fourth sensor unit are each composed of the same number and a plurality of sensors,
When the user is gripping the left-hand grip part and the right-hand grip part, among the sensor parts of the left-hand grip part, the determination unit includes the plurality of output signals that exceed a predetermined threshold output. The number of sensors
When there are more first sensor parts than the second sensor part and more third sensor parts than the fourth sensor part, the left hand grip part is placed on the right hand by the left hand. It is determined that the grip part is gripped by the right hand,
When the first sensor unit is less than the second sensor unit and the third sensor unit is less than the fourth sensor unit, the left hand grip unit is moved by the right hand and the right hand It is discriminate | determined that the grip part for grips is hold | gripped with the left hand.   The biometric apparatus has a left-hand energization electrode and a measurement when the determination unit determines that the user is holding the left-hand grip by the right hand and the right-hand grip by the left hand. An electrode switching unit for causing the right electrode to function as an energization electrode and a measurement electrode for the right hand, and to allow the right electrode and the measurement electrode to function as an energization electrode for the left hand and a measurement electrode The biometric apparatus according to any one of claims 1 to 9, wherein the biometric apparatus is any one of claims 1 to 9.   The biometric apparatus performs alert processing when the determination unit determines that the user is holding the left hand grip unit with a right hand and the right hand grip unit with a left hand. The biometric apparatus according to any one of claims 1 to 10.

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