JP4562079B2 - Biometric device - Google Patents

Description

  The present invention relates to a biometric apparatus that measures the state of each part of a living body.

2. Description of the Related Art Conventionally, there is known a biometric apparatus that measures each part of a living body by sequentially switching and displaying a measurement result for each part. In this display device, after the measurement of each part is completed, a hand is released from each hand electrode to be brought into contact with both hands and the subject is informed to place the hand electrode in a predetermined position. The measurement result for each part is displayed. At this time, for example, the subject can switch to a desired display while directly operating the operation buttons and touch panel at hand with a finger (see, for example, Patent Document 1).
JP 2001-178696 A

  However, in the biometric device, the measurement result is displayed on the display device while the subject holds the hand electrode, such as when the subject does not notice the notification for releasing the hand electrode from the hand when the measurement is completed. Is done. At this time, in order to switch to the desired display as described above, the subject may operate the operation button or the touch panel with his / her finger while holding the hand electrode. The touch panel may be hit and damaged, and the hand electrode itself may be damaged, causing measurement errors. Moreover, the impression was given to the subject as if it was a device that was difficult to operate because the hand electrode was in the way.

  The present invention solves the above-mentioned problems of the prior art and displays the measurement result on the display device and enables the display operation by the subject after it is detected that the hand electrode is released from the hand. A device is provided.

  According to the present invention, a plurality of electrodes including hand electrodes that are brought into contact with a living body by being grasped with a right hand or a left hand, a current supply device for passing a current through the electrodes, and a voltage measuring device for measuring a voltage of the electrodes Determining whether or not at least one of the right hand or the left hand is in contact with the hand electrode in a biometric device including a display device for displaying a measurement result and an input device for performing an input operation by hand The biometric device is provided that displays the measurement result when it is determined that the contact is not touched by the contact determination unit.

  The contact determination means determines contact based on conduction between electrodes in contact with at least one of the right hand or the left hand and another living body part.

  The contact determination means includes a dominant arm determination means for determining a dominant arm, and the contact determination means determines whether or not the hand determined to be the dominant arm is in contact with the hand electrode.

  The dominant arm determination means determines the dominant arm based on the muscle mass of the left and right hands.

  Furthermore, the input device is a touch panel.

  The biometric apparatus of the present invention includes a plurality of electrodes including a hand electrode that is brought into contact with a living body by being grasped with a right hand or a left hand, a current supply device that supplies a current to the electrode, and a voltage measurement that measures a voltage of the electrode. In a biometric device comprising a device, a display device for displaying a measurement result, and an input device for performing an input operation by hand, whether or not at least one of the right hand or the left hand is in contact with the hand electrode Contact determination means for determining whether or not the display device displays the measurement result when it is determined that the contact determination means is not in contact. Since the result is not displayed, the subject forgets to release the hand electrode, the display device is not operated by the input device such as switching the display, and the hand electrode and the input device may collide with each other. Damage, that the input device and the electrodes being damaged can be prevented.

  In addition, when the input device is a touch panel, the touch panel is relatively expensive because many touch panels are vulnerable to scratches and impacts. Can be obtained more significantly in terms of cost.

  Further, the contact determination means is automatically determined by determining contact from conduction between electrodes that contact at least one of the right hand or the left hand and another living body part. Simple measurement can be performed as before without requiring a simple operation.

  Further, the contact determination means includes a dominant arm determination means for determining a dominant arm, the contact determination means determines whether or not the hand determined to be the dominant arm and the hand electrode are in contact with each other, and the dominant arm is determined. Since the determination means is for determining the dominant arm based on the muscle mass of the left and right hands, it is generally considered that the higher-established hand operated by the input device is the dominant arm. The result is displayed as soon as there is free space, and smooth operation is possible at an earlier timing.

  The embodiment will be described with reference to the drawings. FIG. 1 is a perspective view of the measuring apparatus. The measuring apparatus 1 has an approximately L shape, and a scale 2 is provided at the bottom. This weight scale 2 is a well-known one, and is provided with electrode portions 3 and 4 in contact with the bottom surfaces of the left and right feet on a mounting surface 2a that is placed for measuring the weight of the subject. The electrode parts 3 and 4 are composed of electrodes 3a and 4a for passing a current and electrodes 3b and 4b for measuring a voltage. A power switch 5 and a printing device 6 are provided on the front surface of the measuring device 1. Further, a display / input device 7 formed of a touch panel type liquid crystal display device is provided on the upper portion of the measuring device 1, and left and right hand electrode portions 8 and 9 are provided on the upper left and right side surfaces. The hand electrode portions 8 and 9 are composed of electrodes 8a and 9a for passing a current and electrodes 8b and 9b for measuring a voltage. The hand electrodes are already known in a hand-type body fat scale. Therefore, explanation is omitted.

  FIG. 2 is an electrical block diagram of the measuring apparatus 1, and eight electrodes 3 a, 3 b, 4 a, 4 b, 8 a, 8 b, 9 a, and 9 b that are in contact with the left and right limbs are connected to the electrode switching device 10. The electrode switching device 10 is connected to a control device 13 via a current supply device 11 and a voltage measurement device 12. The control device 13 includes a microcomputer and is connected to a storage device 14 that stores various data. Further, the display and input device 7 shown in FIG. 1 includes an input device 15 and a display device 16 inside in terms of electrical circuit, and is connected to the control device 13 via an input / output control device 17 for controlling them. is doing. A power supply device 18 supplies power to the control device 13 and other devices. Furthermore, the microcomputer provided in the control device 13 also serves as a contact determination unit that is a contact determination unit that determines by conduction whether or not the hand electrode portions 8 and 9 are in contact with both hands.

  Next, the operation of the measurement apparatus 1 will be described with reference to the flowcharts of FIGS. 3, 4, and 5 and the display screens of FIGS. 6, 7, 8, 9, and 10. First, when the power switch 5 of the measuring device 1 is turned on, all electric devices are initially set in step S1, and the process proceeds to the clothing amount input mode shown in FIG. 6a in step S2. In this mode, a message display for inputting the weight of clothes and an input keyboard for inputting the amount of clothes are displayed on the display device 16. When the subject's clothing amount, for example, 1.5 kg, is input from the surface of the display unit with a finger using the numerical keys of the input keyboard, the display is as shown in FIG. 6B. When the forward key is pressed, step S3 Proceed to If the value entered at this time is incorrect, all the numbers are erased with the erase key, or the last entered numeric value is erased one by one with the Back key and re-entered.

  Step S3 is a mode for measuring body weight. As shown in FIG. 6C, the subject is encouraged to place his / her bare feet on the mounting surface 2a of the weight scale 2, and the clothing amount input in step S2 is subtracted in advance. As shown, it is shown as a minus sign. When the test subject is placed on the mounting surface 2a, the weight is measured by the scale 2, and the numerical value of the weight is displayed as shown in FIG. 6D, and a message is also displayed so as to proceed to step S4. If “Proceed” is pressed here, the physique and gender can be input as shown in FIG. 6E. For example, “Standard / Male” is pressed, and if “Proceed” is pressed, the process proceeds to Step S5. Step S5 is for inputting the age. As shown in FIG. 6 (f), the age of the subject is input using the numerical keys, and when the advance button is pressed, the process proceeds to step S6. In step S6, the height is input. As shown in FIG. 7A, the height of the subject is input using the numerical keys, and the forward button is pressed. Thereby, it progresses to step S7 and the message for data confirmation is displayed on the display apparatus 16 with the test subject's data measured and input by step S6 from step S3 (FIG.7 (b)). If the return or stop key is pressed in step S8, the process returns to step S2 and input and measurement are repeated from the beginning. When the start key is pressed, the process proceeds to step S9 to start measurement of each part of the subject. Although not shown here, the hand electrode portions 8 and 9 are held with the left hand and the right hand, respectively, and enter the measurement posture. Thus, the instruction is displayed on the display / input device 7 and the process proceeds to the measurement and display steps of each part from the following step S10 to step S18.

  In step S10, an alternating current is supplied from the current supply device 11 between the electrodes 3a and 4a by switching the electrode switching device 10 in accordance with an instruction from the control device 13, and the voltage is measured by the voltage measuring device 12 at the electrodes 3b and 4b. Measured. As shown in FIG. 7C, the measurement voltage is calculated by the control device 13, and the display device 16 is supplied with the figure of the whole body model of the subject and the measurement site, in this case, the current from the current supply unit 11. In addition to displaying black circles on both feet that are parts, white circles are displayed on both legs that are voltage measurement parts, and white circles between both legs that are voltage measurement parts are indicated by dotted lines, and electrical impedance is also displayed. By displaying the current supply site and the measurement site in this way, it is possible to give a sense of security to the subject and to prevent the user from being aware of the passage of time. When this measurement ends, the process proceeds to step S11. Similarly, in step S11, between both hands is measured, a current is passed between the electrodes 8a and 9a, and a voltage is measured between the electrodes 8b and 9b. As a result, a black circle for current supply, a white circle for voltage measurement, and a dotted line indicating the measurement site are displayed between both hands in FIG. In step S12, the distance between the right hand and the right foot is measured. A current is passed between the electrodes 4a and 9a, and a voltage is measured between the electrodes 4b and 9b. The result is shown in FIG. In step S13, the distance between the left hand and the left foot is measured. A current is passed between the electrodes 8a and 3a, and a voltage is measured between the electrodes 8b and 3b. The result is shown in FIG.

  In step S14, the right foot is measured, a current is passed between the electrodes 9a and 4a, and a voltage is measured between the electrodes 3b and 4b. The result is shown in FIG. In this case, the current flows between both feet as shown by the black circle, and the voltage at the right foot can be measured by measuring the voltage between the right hand and the foot as shown by the white circle and dotted line, so the voltage at the right foot is divided by the current. Can calculate the impedance. In step S15, the left foot is measured, a current is passed between the electrodes 8a and 3a, and a voltage is measured between the electrodes 3b and 4b. The result is shown in FIG. In this case, the current flows between both feet as shown by the black circle, and the voltage at the left foot can be measured by measuring the voltage between the left limb and the white circle and the dotted line, so the voltage at the left foot is divided by the current. Can calculate the impedance. In step S16, the right hand is measured, a current is passed between the electrodes 9a and 4a, and a voltage is measured between the electrodes 8b and 9b. The result is shown in FIG. In this case, the current flows between both hands as shown by the black circle, and the voltage at the right hand portion can be measured by measuring the voltage between the right hand and the foot as shown by the white circle and dotted line, so the right hand portion voltage is divided by the current. Can calculate the impedance. In step S17, the left hand is measured, a current is passed between the electrodes 8a and 3a, and a voltage is measured between the electrodes 8b and 9b. The result is shown in FIG. In this case, the current flows between both hands as shown by the black circle, and the voltage at the left hand portion can be measured by measuring the voltage between the left limbs as shown by the white circle and dotted line, so the voltage at the left hand portion is divided by the current. Can calculate the impedance. In step S18, between the trunks is measured, a current is passed between the electrodes 9a and 4a, and a voltage is measured between the electrodes 8b and 3b. The result is shown in FIG. In this case, the current flows between the left limb as shown by the black circle, and the voltage of the trunk can be measured by measuring the voltage between the right limb as shown by the white circle and the dotted line. The impedance can be calculated by dividing by.

  When the measurement of each part is thus completed, in step S19, as shown in FIG. 8 (f), a display indicating the end of measurement and the hand electrode portions 8 and 9 are released from both hands and returned to their original positions. The display / input device 7 displays a display for instructing. At this time, the end of measurement and the instruction may be notified by voice. In addition to the above instructions, it is also possible to provide a light emitting body such as an LCD at a position where the hand electrodes 8 and 9 of the measuring apparatus 1 are returned and to make the subject easily noticeable by blinking the LCD.

  Along with the display, a current is applied between the electrodes 8a and 9a and a voltage is measured between the electrodes 8b and 9b in the same manner as the two-hand measurement in the step S11 between the hand electrode portions 8 and 9. In subsequent step S20, the continuity between both hands is determined. That is, whether or not the measured voltage value is stably measured within a voltage range that is set in advance and is considered to measure the living body, is determined in the contact determination unit in the control device 13. It is determined in the microcomputer that also serves as

  If the voltage value is stably detected within the range, it is determined that the hand electrode portions 8 and 9 are still held, and the process proceeds to YES to repeat the display and voltage measurement shown in step S19. Further, when it is determined that the voltage value is outside the range of the voltage considered to be measuring the living body and the continuity is lost, the hand electrode portions 8 and 9 are in accordance with the instructions displayed on the display and input device 7. Is returned to the original position and determined to be separated from both hands, and the process proceeds to NO. In step S21, the display device 16 is controlled by the control device 13 via the input / output control device 17 and measured by the display and input device 7. Display the results.

  The display of the measurement result will be described later with reference to FIG. 4. As described above, the display / input device 7 is a touch panel type liquid crystal display device, and the display content is switched by directly touching the display panel with a finger. It is something that can be done. At this time, since it is confirmed that the hand electrodes 8 and 9 are not grasped by both hands by the contact determination unit in the control device 13, the measurement result is displayed. Occasionally, the hand electrodes 8 and 9 do not get in the way, and the display / input device 7 and the hand electrodes 8 and 9 do not collide with each other.

  Further, in the determination of the continuity between the two hands, the continuity is lost even when the electrode is separated from only one hand, but in this case, it is common sense that the touch panel is operated with the hand with the electrode separated. There is no problem even if it is used within a certain range.

  When the measurement result is displayed, it is determined in step S22 whether or not a later-described print key has been pressed. If not, the process returns to step S2, and if pressed, printing is performed by the printing device 6 in step S23, and step S2 Return to.

  Next, the measurement result display subroutine in step S21 will be described with reference to FIG. 4. In step S30, the display counter inside the control device 13 is set to “0”, and in step S31, a display switch key described later is pressed. However, it is initially determined No and the process proceeds to step S33. In step S33, since the display counter is set to “0” in step S30, it is determined Yes, and the process proceeds to step S34. As shown in FIG. 9A, the body weight, the whole body fat percentage, the lean body mass, and each part Impedance, partial body fat percentage, partial body fat mass, and partial muscle mass are displayed on the display device 16 in a table format. If the print key is pressed here, it is determined Yes in step S35, the process exits from this subroutine, proceeds to step S22 in FIG. 3, and printing is performed in step S23. If the print key is not pressed, the process proceeds to step S36 to determine the display end key. If the display end key is not pressed, the process returns to step S31, and if it is pressed, the subroutine is exited.

  If the display switching key is pressed during this numerical display, it is determined Yes in step S31, the display counter is incremented to "1" in step S32, No is determined in step S33, and the process proceeds to step S37. In step S37, since it is judged Yes, it progresses to step S38, and the figure of a test subject's whole body model and the electrical impedance for every measurement region are displayed on the display apparatus 16, as shown in FIG.9 (b). And it progresses to step S39, returns to step S35 through the step of the site | part data display mentioned later.

  If the display switching key is pressed during the electrical impedance display, the process proceeds from step S31 to steps S40 through steps S32, S33, and S37. At this time, it is judged as Yes in step S40, and it progresses to step S41, and displays the figure of a test subject's whole body model, and the body fat rate for every measurement part on the display apparatus 16, as shown in FIG.9 (c). And it progresses to step S42 similar to step S39, returns to step S35 through the step of the site | part data display mentioned later.

  If the display switching key is pressed during the body fat percentage display, the process proceeds from step S31 to steps S43 through steps S32, S33, S37, and S40. At this time, in step S43, it is determined Yes, and the process proceeds to step S44, where the display of the whole body model of the subject and the body fat amount for each measurement site is displayed on the display device 16 as shown in FIG. And it progresses to step S45 similar to step S39, returns to step S35 through the step of the site | part data display mentioned later. If the display switching key is pressed during the body fat amount display, the process proceeds from step S31 to steps S32, S33, S37, S40, and S43. At this time, it is judged as Yes in step S46, and it progresses to step S47, and displays the figure of a test subject's whole body model and the partial muscle mass for every measurement part on the display apparatus 16, as shown in FIG.9 (e). Then, the process proceeds to step S48, which is the same as step S39, and returns to step S35 through a part data display step described later.

  If the display switching key is pressed during the partial muscle mass display, the process proceeds from step S31 to steps S32, S33, S37, S40, S43, S46 to step S49, sets the display counter to “0”, and returns to step S35. At this time, since the display counter is “0”, the process proceeds from step S33 to step S34 to return to the numerical value display.

  Next, the part data display subroutine shown in FIG. 4 will be described with reference to FIG. The processing contents of steps S39, S42, S45, and S48 in FIG. 4 are common. In step S50, it is first determined whether or not the part counter in the control device 13 of FIG. 2 is “0”. Initially, the part counter is an initial value after power-on, that is, “0”, and “Yes” is determined. In step S51, it is determined whether or not the part changeover switch shown in FIG. 9 has been pressed. If not, the process directly returns to step S35 in FIG. If the part changeover switch has been pressed in step S51, it is determined Yes and the process proceeds to step S52, where the part counter is incremented by "1". In step S53, since the part counter is “1”, the process proceeds to step S54, and as shown in FIG. 10A, the whole body model diagram of the subject and all data of the measurement data of the right hand part are displayed on the display device 16. Then, in step S55, it is determined that the display end key has been pressed. Unless the process returns to step S35 in FIG. 4, the process returns to step S50 and the display is continued.

  If the part switching key is pressed during the right hand data display, it is determined Yes in step S58, the part counter is incremented in step S52, and the part counter is set to “2”. At this time, No is determined in step S53, Yes is determined in step S56, and the process proceeds to step S57. In step S57, as shown in FIG. 10B, a diagram of the whole body model of the subject and all data of the measurement data of the right foot part are displayed on the display device 16. Then, in step S55, it is determined that the display end key has been pressed, and unless the process returns to step S35 in FIG. 4, the process returns to step S50, proceeds from step S50 to steps S58, S53, and S56, and continues to display the right foot. . If the part changeover switch is pressed during the display of the right foot part, it is determined Yes in step S58, and the process proceeds to step S52 to increment the part counter by “1”. As a result, the process proceeds to steps S53, S56, and S59. In step S60, all the left-hand data is displayed as shown in FIG.

  Although the following description is omitted, all the data of the left foot, head and trunk are also displayed as shown in FIGS. 10 (d) and 10 (e). If the part switching key is pressed while the head and trunk data is being displayed, it is determined No in step S63, the part counter is returned to “0” in step S65, and steps S55, S50, and S51 to FIG. Return to the numerical display state of the original display counter.

  In the above-described embodiment, the example of five measurement sites including the right hand, the right foot, the left hand, the left foot, the head, and the trunk has been described. However, the present invention is not limited thereto, and fewer measurement sites may be displayed. Measurement results other than electrical impedance, body fat percentage, body fat mass, and muscle mass may be displayed.

  Further, in step S19 of FIG. 3, whether or not at least one of the hand electrode portions 8 or 9 is separated from the hand is determined by the contact determination portion in the control portion 13 to determine the continuity between both hands. Or you may determine the conduction | electrical_connection between the electrodes which contact one side and another biological body part among left hands. For example, in order to check whether or not the right hand is away from the hand electrode portion 9, a current is passed between the electrodes 4a and 9a between the right hand and the right foot in the same manner as in step S11 of FIG. The continuity between the right hand and the right foot is determined by measuring the voltage between 9b. Further, in order to confirm whether or not the left hand is away from the hand electrode portion 8, a current is passed between the electrodes 8a and 3a between the left hand and the left foot in the same manner as in step S12 in FIG. The continuity between the left hand and the left foot is determined by measuring the voltage between 3b. Thereby, when it is determined that there is no conduction between at least one of the right hand and the right foot or between the left hand and the left foot, the result may be displayed as in step S20. The same can be said for determining whether at least one of the right hand and left foot or the left hand and right foot is connected.

  Further, when it is determined that there is no continuity between the two hands, between the right hand and the right foot, between the left hand and the left foot, between the right hand and the left foot, and between the left hand and the right foot, a result may be displayed.

  Further, before determining the continuity between the right hand and the right foot or the left hand and the left foot, the muscle mass of the right hand is compared with the muscle mass of the left hand, the one with the larger muscle mass is regarded as the dominant arm, and the contact determination unit in the control unit 13 It may be determined whether or not the hand electrode is separated from the hand determined to be the dominant arm. As a result, the dominant arm is considered to be a highly established hand that operates the touch panel, and thus it is not necessary to determine the continuity between the right hand and the right foot and between the left hand and the left hand as described above. Since the result is displayed as soon as the hand is free, smooth operation is possible at an earlier timing.

It is a perspective view of a measuring device. It is an electrical block diagram of a measuring device. It is a flowchart figure of a measuring device. It is a flowchart figure of a measuring device. It is a flowchart figure of a measuring device. It is a figure which shows the display screen of a display apparatus. It is a figure which shows the display screen of a display apparatus. It is a figure which shows the display screen of a display apparatus. It is a figure which shows the display screen of a display apparatus. It is a figure which shows the display screen of a display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Measuring apparatus 2 Scale 3, 4, 8, 9 Electrode part 3a, 3b, 4a, 4b, 8a, 8b, 9a, 9b Electrode 5 Power switch 6 Printing device 7 Display and input device 10 Electrode switching device 11 Current supply device 12 voltage measuring device 13 control device 14 storage device 15 input device 16 display device 17 input / output control device 18 power supply device

Claims (5)

A plurality of electrodes including a hand electrode that is brought into contact with a living body by being grasped with a right hand or a left hand, a current supply device for supplying a current to the electrode, a voltage measuring device for measuring the voltage of the electrode, and displaying a measurement result In a biometric apparatus provided with a display device and an input device for performing an input operation by hand,
Contact determining means for determining whether at least one of the right hand or the left hand is in contact with the hand electrode,
The said display apparatus displays the said measurement result, when it determines with the said contact determination means not contacting, The biometric apparatus characterized by the above-mentioned.   The biometric apparatus according to claim 1, wherein the contact determination unit determines contact based on conduction between electrodes in contact with at least one of the right hand or the left hand and another biological part.   The contact determination means includes a dominant arm determination means for determining a dominant arm, and the contact determination means determines whether or not a hand determined to be the dominant arm and a hand electrode are in contact with each other. The biometric apparatus according to 1.   The biometric apparatus according to claim 3, wherein the dominant arm determination unit determines a dominant arm based on a muscle mass of left and right hands. The biometric apparatus according to claim 1, wherein the input device is a touch panel.

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