JP6438220B2 - Biological information measuring device - Google Patents

Description

  The present invention relates to a biological information measuring device that measures biological information such as body weight and body composition, and more particularly to a technique for identifying a measurer.

Conventionally, body weight is measured for the purpose of self-health and physical condition management. In recent years, there is a biological information measuring device that measures bioelectrical impedance in addition to body weight and calculates various body compositions such as body fat percentage and basal metabolism from the measured values. In such a biological information measuring device, since basic information such as the height and gender of the measurer is required to calculate various body compositions, for example, assuming a case where multiple people in the home measure, Basic information can be registered in advance for each user.
In the case of a biometric information measuring apparatus that can be registered by a user, it is necessary to specify a measurement user. In Patent Document 1, a measurement person is specified using bioimpedance as a determination condition. It is used as a determination condition, and a measurer is specified from a user registrant who applies to a certain range of bioimpedance and a certain range of weight with respect to the measurement result.

However, when a user whose bioimpedance or weight is close to the measured value is specified as a measurer among registered users, there is a problem that the measurer cannot be specified accurately among registered users whose bioimpedance or weight is close.
In particular, when a biological information measuring device is used between families, there is a case where a measurement person is mistakenly specified because there are cases where a parent and a child or a sibling have a similar body shape.
The measurement result is stored in the biological information measuring device or externally output (including transmission), so that it can be used for the periodic and long-term physical condition management of the measurer. In particular, the operator's specific error is particularly problematic.

JP 2001-204705 A JP 2002-345774 A

  An object of the present invention is to specify a measurer more accurately from registered users.

(1) In the first aspect of the invention, the weight measuring means for measuring the weight of the measurer, the bioimpedance measuring means for measuring the bioimpedance of the measurer, and the measurement time for detecting the measurement time measured by the measurer Detection means, user registration means for registering the user of the measurer, measurement history storage means for storing at least one of the measured body weight and bioimpedance, and the detected measurement time as a measurement history for each user, The user is determined by at least one of the difference between the weight measured this time and the weight of the measurement history, the difference between the bioimpedance measured this time and the bioimpedance of the measurement history, and the time difference between the current measurement time and the measurement time of the measurement history. There is provided a biological information measuring apparatus characterized by comprising a user recognition means for recognizing.
(2) In the invention described in claim 2, the user registration means stores gender, age specifying information, and height as basic information for each user, and measures the measured weight and bioimpedance and the recognized user. Further comprising: body composition calculation means for calculating the body composition of the user from the corresponding stored basic information; and output means for outputting the measured body weight and the calculated body composition or bioimpedance. A biological information measuring device according to claim 1 is provided.
(3) In the invention described in claim 3, wherein the user identification means, at least one of the difference between the difference and the bioimpedance This time bioimpedance and the measurement history of the measurement of the weight of currently measured body weight and the measured history of the Is given within the predetermined range, and an evaluation point is assigned to the measurement history in which the time difference between the current measurement time and the measurement time of the measurement history is within the predetermined range, and the total of the evaluation points for the measurement history for each user The biological information measuring device according to claim 1 or 2, wherein a user having the highest value or average value is recognized as a measurer.
(4) In the invention according to claim 4, the biological information measuring device according to claim 3, wherein the user recognition means gives a higher evaluation score as the time difference is smaller.
(5) In the invention according to claim 5, when there are a plurality of users having the highest total value or average value of the evaluation points, the user recognition unit satisfies the weight tolerance range among the users. 5. The biological information measuring device according to claim 3, wherein a user who has the largest number of measurement histories satisfying the allowable range of the bioelectrical impedance is identified as a measurer. To do.
(6) In the invention according to claim 6, when there are a plurality of users having the highest total value or average value of the evaluation points, the user recognition unit satisfies the weight tolerance range among the users. Although there is no bioimpedance, the total score of the evaluation points when the evaluation point by the measurement time is attached to the measurement history satisfying the allowable range, or the registered user with the highest average score is recognized as the measurer. The biological information measuring device according to claim 3 or claim 4 is provided.
(7) In the invention according to claim 7, when there are a plurality of users having the highest total value or the average value of the evaluation points, the user recognition unit determines an average value of bioimpedances of the measurement history for the user. The biometric information measuring device according to claim 3 or 4, wherein a user having the smallest absolute value of the difference between the bioimpedance measured this time is recognized as a measurer.

  According to the invention, the user is recognized using not only the measured weight and / or bioimpedance but also the measurement time by the measurer, so that the measurer can be identified more accurately among the registered users. .

It is an external appearance block diagram of a biological information measuring device. It is a functional block diagram of a biological information measuring device. It is explanatory drawing which represented the content of the memory | storage data of a user information storage part and measurement result historical data notionally. It is explanatory drawing showing the detail of the display screen of a display part. It is a flowchart showing the whole measurement processing operation. It is explanatory drawing showing essential conditions and determination conditions corresponding to each history data of each registered user. It is a flowchart showing the detail of the measurer identification process. It is explanatory drawing showing the preservation | save content of the measurement result log | history in a modification.

Hereinafter, a preferred embodiment of the biological information measuring device of the present invention will be described in detail with reference to FIGS.
(1) Outline of Embodiment In the biological information measuring apparatus of the present embodiment, a measurer is specified using not only the measurement result of the target measurement object but also the measurement time.
In this embodiment, for example, when measuring in the morning, when measuring before going to bed, when measuring before taking a bath, when measuring in the daytime, etc., each registered user often measures in approximately the same time zone. It takes into account each person's lifestyle.

Therefore, the biological information measuring device detects the measurement time (measurement date) in addition to the measurement of weight and bioimpedance (Bioelectrical Impedance) and stores the measurement time (measurement date) as history data of the measurement result for each registered user. Keep it.
Then, the measurement result is compared with the past measurement result history, and the history of biometric impedance and weight difference, which is a conventional identification condition, is scored according to the difference in measurement time, and the average of the scores A registration number with a large number of points or total points (when the number of history of each user is the same) is recognized as a measurer. That is, on the condition that the time difference between the current measurement time and the history measurement time is within t3, the score is increased as the measurement history is closer to the current measurement time (the smaller the difference between the current measurement time and the history measurement time). For example, 4 points if within 15 minutes, 2 points if within 30 minutes (excluding within 15 minutes), and 1 point if within 1 hour (excluding within 30 minutes).

If the highest average score (total score) is the same, the user whose bioimpedance history is closest to the current measurement value is recognized as the measurer.
In this case, when the difference between the average value of each history and the current measurement value is the smallest, or when the number of histories satisfying the identification condition (difference is within a predetermined range) is the largest, etc. Judge.

(2) Details of Embodiment FIG. 1 shows an external configuration of a biological information measuring apparatus to which the present embodiment is applied. (A) is a plan view, (b) is a front view, and (c) is a rear view. It is.
As shown in FIG. 1 (a), the biological information measuring apparatus 1 of the present embodiment includes an apparatus main body 10. On the upper surface of the apparatus main body 10, there are a display unit 11 and left and right and up and down according to the arrangement of legs. Measurement electrodes 12 and an operation unit 13 are arranged at four positions.
On the back side of the apparatus main body 10, weight sensors 15Lf, 15Lb, 15Rf, and 15Rb are arranged at four corners as shown by dotted lines in FIG. 1 (a) and as shown in FIGS. 1 (b) and 1 (c). Further, push switches 16L and 16R are arranged at both front corners of the apparatus main body 10.
As shown in FIG. 1B, a power switch 14 is disposed on the rear side surface of the apparatus main body 10.

The apparatus main body 10 is a casing with a flat surface on which a measurement subject rides.
An electronic circuit, a power source, a power source holding unit, and the like (not shown) are provided inside the apparatus body 10.

The display unit 11 is composed of a liquid crystal display.
The display unit 11 of the present embodiment employs a segment system, but a dot matrix liquid crystal display can also be employed.
The display unit 11 displays input information input at the time of user registration, measurement results such as weight and body fat percentage, and the like.
Each display item and display area of the display unit 11 will be described later.

The measurement electrodes 12Lf, 12Lb, 12Rf, and 12Rb are for measuring the bioimpedance of the measurement subject on the apparatus body 10, and a total of four electrodes are arranged on the front, rear, left, and right.
The measurement electrode 12Lf, 12Lb, 12Rf, 12Rb measures the resistance value between the electrodes, thereby calculating the bioimpedance of the measurer.
Actually, a weak constant current of high frequency is applied from one electrode, a voltage drop is measured at the other one electrode, and a resistance value between both electrodes is measured from this voltage drop.

The measurement electrodes 12Lf, 12Lb, 12Rf, and 12Rb are distinguished and displayed by L and R with respect to the left and right, and subscripts f and b with respect to the front and rear depending on the arrangement location.
In measurement, the measurer places the toe side and the heel side of the left and right feet on the measurement electrodes 12Lf, 12Lb, 12Rf, and 12Rb with the arch interposed therebetween.
In the following description, as a symbol for designating the measurement electrode, 12L or 12R is designated when specifying either left or right regardless of front and rear, and either front or rear is specified regardless of left or right. In this case, they are expressed as 12f and 12b, and when any one or all of the measurement electrodes are specified regardless of whether they are front, rear, left or right, they are expressed as 12.
The notation of this subscript is the same for the weight sensors 15Lf, 15Lb, 15Rf, 15Rb, and the push switches 16L, R.

The operation unit 13 includes an upper key 13a, a lower key 13b, a clear key 13c, and a setting key 13d.
The up and down keys 13a and 13b are keys for making a transition to another screen on a display screen having no setting items and changing the contents (numerical values and items) of the setting items on the display screen having the setting items.
The clear key 13c is a key for clearing each item and value being displayed and returning to the previous screen.
The setting key 13d is a key for confirming an item set on a display screen with a setting item and shifting to the next setting item and the next display screen.
Various selections such as input of basic information (height, sex, date of birth) for each user (measurement person), selection of a user, and selection of various modes are performed by operating each key of the operation unit 13.

  The biological information measuring apparatus 1 is configured such that, after the measurement is completed, when a non-operation state of the operation unit 13 has elapsed for a predetermined time (for example, 1 minute), the biological information measurement device 1 shifts to a power saving state and the liquid crystal display of the display unit 11 is turned off. ing. In this power saving state, when any key of the operation unit 13 is pressed, the power saving state is canceled and calibration is started.

  The power switch 14 is a switch that cuts off all power supply from the power source to each unit such as the display device 11 and a control unit described later.

The weight sensors 15Lf, 15Lb, 15Rf, and 15Rb are sensors for measuring the weight of the measurer on the biological information measuring device 1, and are configured by four load cells in the present embodiment.
Each weight sensor 15 outputs a physical quantity corresponding to the weight value of the measurer, and the weight of the measurer is calculated based on each output value.
The body weight of the measurer calculated from each detection value of the weight sensor 15 is used to calculate the body composition BMI (Body Mass Index) and basal metabolism together with the basic information registered for the measurer. The body weight of the measurer includes the body impedance calculated from the detection value of the measurement electrode 12 and basic information, and the body fat percentage, the built-in fat level (rate), the body age, the bone level, and the skeletal muscle. Level and moisture content are calculated.

Each weight sensor 15 measures a load applied during measurement in units of 10 g.
In the present embodiment, the weight calculated in units of 10 g is used for storage in a measurement result history, which will be described later, and calculation of biological information such as body fat percentage, and the display device 11 is rounded to the nearest 100 g. Are all displayed in units of 10 g, or all units of 100 g can be used.
However, for simplification in the following description, a case where the unit is 100 g in storage, calculation, and display will be described.

The push switches 16L and 16R are arranged at two positions on the back side of the apparatus main body 10 and the front left and right, and are switches that detect that the measurer gets on the biological information measuring apparatus 1 (step-on).
When the biological information measuring device 1 is in a power saving state, when step-on is detected by the push switch 16, the measurement is started after returning from the power saving state.
In the biological information measuring apparatus 1 according to the present embodiment, the case where the two push switches 16L and 16R are arranged on the front left and right will be described. However, the push switches 16L and 16R may be arranged on the rear left and right. You may make it arrange | position to.

The weight sensor 15, the measurement electrode 12, and the push switch 16 can all function as part of a measurement time detection unit that detects the measurement time. In the present embodiment, all functions as part of the measurement time detection means.
That is, in the present embodiment, the weight sensor 15, the measurement electrode 12, and the push switch 16 detect that a foot is placed on the biological information measuring device 1 (measurement start), and the time at the time of detection is detected as the measurement time. .
Note that the measurement time may be the same standard, and in addition to the measurement start time, the time when the measurement of the body weight and the bioelectrical impedance is completed, the time when the measurement is taken off from the biometric information measurement device 1, and the like can be adopted.
The measurement time depends on the time output from the date / time information measurement unit 33 described later.

FIG. 2 shows functional blocks of the biological information measuring apparatus 1.
The biological information measuring apparatus 1 includes a control unit 20 that performs various controls on the entire apparatus such as calculation of biological information based on measurement results, display control thereof, storage in a measurement result history, and control corresponding to an input operation.
The control unit 20 includes a display unit 11, an operation unit 13, a push switch 16, A / D conversion units 31 and 32, a date and time information measurement unit 33, a communication unit 34, an audio output unit 35, and a nonvolatile memory that functions as a storage device 40 is connected.

The A / D conversion unit 31 converts the analog detection value input from each weight sensor 15 into a digital value and supplies the digital value to the control unit 20.
The A / D conversion unit 32 converts the analog detection value input from each measurement electrode 12 into a digital value and supplies the digital value to the control unit 20.

  The date / time information measuring unit 33 functions as part of a measurement time detection unit that measures the current date / time as the date / time information in units of year / month / day / hour / minute / second, and supplies the measured date / time information to the control unit 20. The date information may be supplied at every predetermined timing, or may be supplied in response to a request from the control unit 20.

The communication unit 34 functions as an output unit for outputting various measurement results obtained by the biological information measuring apparatus 1 to the outside.
The measurement result by the communication unit 34 is output wirelessly in this embodiment, but may be output by wire.
As an example in the case of wired, for example, output to various storage media such as a USB memory, and output to an external device such as a personal computer or a portable terminal via various cables are possible.
As a method of outputting measurement results by wireless communication by the communication unit 34, Bluetooth (Bluetooth (registered trademark)), infrared communication, NFC (registered trademark), ZigBee (registered trademark), WiMAX (Worldwide Interoperability Access (registered trademark)) Various short-range wireless communications such as Wi-Fi (Wireless Fidelity (registered trademark)) and various wireless communications such as 3G system and 4G system can be used.
The communication unit 34 according to the present embodiment is configured to be able to input and output data using one or a plurality of methods among these various wired and wireless communications.

The voice output unit 35 is an output device that outputs a guidance voice for operation guidance corresponding to each input operation screen during an input operation, and outputs a beep sound after the measurement is completed.
About the sound and sound by the audio | voice output part 35, although it is set to ON which outputs as a default setting, it can be changed to OFF setting by user operation. Note that the default setting may be reversed.

The nonvolatile memory 40 is configured by a storage medium that stores various data, and stores a user information storage unit 41, measurement result history data 42, and other data.
FIG. 3 conceptually shows the contents of the stored data of the user information storage unit 41 and the measurement result history data 42.
As shown in FIG. 3A, the user information storage unit 41 stores user number, gender, height, and age specifying information as basic information for each user (measurer). The age specifying information may be information that can calculate the age of the user at the time of measurement, and corresponds to the age of the user at the time of registration, the registration date, the date of birth, and the like.

The measurement result history data 42 stores a user 1 history 421, a user 2 history 422,... For each registered user number.
As shown in FIG. 3B, each user history of the measurement result history data 42 stores weight (kg), bioelectrical impedance (Ω), and measurement date / time (year / month / day / minute).
In the present embodiment, the case where the number of user registrations is four is described. However, any number of users can be registered as long as a plurality of measurers need to be recognized, such as five assuming a family of five. Yes, it can be unlimited.
In FIG. 3, bioelectrical impedance is represented by BI. The same applies to other drawings.

FIG. 4 shows details of the display screen of the display unit 11.
FIG. 4 is a display screen showing the weight and body fat percentage after the measurement.
The display unit 11 functions as an output unit that displays the measurement result.
As shown in FIG. 4, the display unit 11 includes six display areas from the first display unit 111 to the sixth display unit 116.
The first display unit 111 and the second display unit 112 are regions in which measurement results and input values in input operations are displayed.
When the measurement result is displayed, the weight is displayed on the first display unit 111, and the calculated body composition value is sequentially switched every predetermined time (for example, 2 seconds) on the second display unit 112. Is displayed. The second display unit 112 sequentially displays body fat percentage, BMI, basal metabolism, skeletal muscle level, bone level, visceral fat level, water content, body age, and body fat percentage. While these body compositions are sequentially switched and displayed on the second display unit 112, the weight is continuously displayed on the first display unit 111.

  On the other hand, when the input value is displayed in the input operation, the year is displayed on the first display unit 111 and the date is displayed on the second display unit 112 in the input operation for setting the date and time or the user's birth date. In the date and time setting, the input time (hours and minutes) is displayed on the first display unit 111 after inputting the date.

The first display unit 111 and the second display unit 112 display measured values and input values, and display units (kg, cm,%, Kcal) of displayed items and display items corresponding to each display content. The supplementary characters (year, month, day, hour, minute, age) for are displayed.
In FIG. 4, the body weight (61.3 kg) and the body fat percentage (15.5%) are displayed as the measurement results after the measurement.

  The third display unit 113 is a graph that displays how far each body composition displayed on the second display unit 112 is from the standard value. A total of nine levels are displayed, including the standard three levels, the lower three levels, and the higher three levels.

The fourth display unit 114 displays item names of items being displayed on the first display unit 111 and the second display unit 112. In FIG. 4, the item name “weight” for the display of the first display unit 111 is displayed, and the item name “body fat percentage” for the display of the second display unit 112 is displayed.
Although not displayed in FIG. 4, “during measurement” is displayed on the fourth display unit 114 during measurement.

The fifth display unit 115 displays the user number and gender.
As for the user number displayed on the fifth display unit 115, the specified user number is displayed when the user is specified before the start of measurement, and the user automatically recognized from the measurement result in the automatic recognition mode. The number is displayed.
The gender displayed in the fifth display unit 115 is the gender stored in the user information storage unit 41 corresponding to the designated or automatically recognized user number, as shown in FIG. , “Female”.

  The sixth display unit 116 is a display area in which various states of the biological information measuring device 1 are displayed, and displays a remaining battery level display, a radio wave reception state, and the like.

Returning to FIG. 2, the control unit 20 includes a CPU that performs various arithmetic processes according to a program, a ROM that stores the program, a RAM as a work area, and the like.
The control unit 20 performs various processes such as calculation, display, and storage of biological information according to a measurement processing program stored in various storage media, and performs a measurer identification process in the present embodiment. As a functional block for performing each of these processes according to a program, the control unit 20 includes a weight calculation unit 21, a bioelectrical impedance calculation unit 22, a boarding / alighting determination unit 23, a body composition calculation unit 24, a measurer identification unit 25, and a measurement result storage control unit. 26.

The weight calculation unit 21 calculates the weight of the measurer from each weight value detected by each weight sensor 15 and converted into a digital signal by the A / D conversion unit 31. Specifically, the weight of the measurer is calculated by summing up the respective weight values.
The weight calculation unit 21 supplies the calculated weight of the measurer to the body composition calculation unit 24.

The bioelectrical impedance calculation unit 22 detects the resistance value between the measurement electrode 12L and the measurement electrode 12R detected by each measurement electrode 12 and converted into a digital signal by the A / D conversion unit 32 (between the left foot-body-right foot). The bioelectrical impedance of the measurer is calculated from the resistance value. For the calculation of the bioelectrical impedance, a known calculation method is adopted, and other body compositions are also calculated based on known calculation formulas and statistical data.
The bioelectrical impedance calculating unit 22 supplies the calculated biometric impedance of the measurer to the body composition calculating unit 24.

  The boarding / alighting determination unit 23 determines the step-on of the measurer based on a signal (switch ON signal) supplied from the push switch 16. As described above, when step-on is detected in the power saving state, the power saving state is canceled and measurement is started.

The body composition calculation unit 24 corresponds to the weight supplied from the weight calculation unit 21, the bioimpedance supplied from the bioimpedance calculation unit 22, and the user number identified by the designated user number or the measurer identification unit 25. Then, each body composition of the measurer is calculated using the user information (gender, height, age calculated from the date of birth) recorded in the user information storage unit 41.
The measured body weight and each calculated body composition are displayed on the display unit 11.

The measurer identifying unit 25 identifies the measurer by comparing the weight, bioelectrical impedance, and measurement time obtained by the current measurement with the measurement history for each user stored in the measurement result history data 42. That is, the user number of the measurer is specified.
Specifically, the time difference between the current measurement time and the history measurement time is t1, t2, t3 (t1 <t2), provided that the difference between both the weight and bioimpedance measurement values and the history value are within a predetermined range. Points s1, s2, and s3 (s1>s2> s3) are added to each of the cases where <t3).
And the registration number with the largest average score (or total value in the case of the same history number) for each user history is recognized as a measurer.

  The measurement result storage control unit 26 is the user number of the measurer identified by the measurer identifying unit 25, or the user of the measurer specified before the measurement, with the current measurement result (weight, bioelectrical impedance) and measurement time. The user history 421 to 424 corresponding to the number is saved.

Next, the operation of the measurement process performed by the biological information measuring apparatus 1 configured as described above will be described.
FIG. 5 is a flowchart showing the entire measurement processing operation.
In response to the measurement person's operation, the control unit 20 switches the measurement mode (step 10). Measurement modes include an automatic recognition mode that automatically recognizes a measurer, a user-designated mode that performs measurement by designating a user, a guest mode that is measured by a measurer other than a registered user, a weight-only measurement mode that only measures body weight, etc. There are various measurement modes.
The measurement mode is selected by the measurer operating the operation unit 13, and the control unit 20 switches to the selected measurement mode.
Note that, when the measurement information is not selected by the measurer and gets on the biological information measuring apparatus 1, the control unit 20 selects the automatic recognition mode as the default mode.

The control unit 20 determines whether or not the switched measurement mode is the guest mode (step 11).
If it is the guest mode (step 11; Y), the control unit 20 acquires guest information (age, height, sex) input from the operation unit 13 by the measurer and stores it in the RAM (step 12).
In the guest information input operation by the measurer, the control unit 20 displays guidance of necessary input items on the display unit 11 and displays the input guest information.

  After the guest information is input or when the guest mode is not set (step 11; N), the control unit 20 performs weight measurement (step 13). That is, the control unit 20 calculates the weight of the measurer by summing the weight values supplied from the four weight sensors 15 via the A / D conversion unit 31.

And the control part 20 judges whether the weight measurement was completed (step 14).
When the measurement is not completed (step 14; N), the control unit 20 determines whether or not there is a measurement error (step 15). When it is a measurement error (step 15; Y), the control unit 20 displays an error in a predetermined area of the display unit 11 (step 16), and ends the process.
Here, as a case where the measurement error is determined, for example, there is a case where the measurer gets off after putting only one foot, and in this case, the control unit 20 is supplied with weight values from the four weight sensors 15. It is judged as a measurement error because the weight value has become zero before starting measurement.
On the other hand, if it is not a measurement error (step 15; N), the control unit 20 returns to step 13 and continues the measurement.

  Next, the control unit 20 determines whether or not the mode switched in step 10 is the weight only measurement mode (step 17). If the mode is the weight only measurement mode (step 17; Y), the control unit 20 performs the measurement. The weight is displayed on the display unit 11 (step 18), and the process is terminated.

In the case of only the body weight measurement mode (step; Y), the measured weight is stored as the measurement history for the designated or automatically recognized measurer (user) by displaying the measurement result and then moving to step 22. You may make it do.
When the measurement person is automatically recognized in the weight only measurement mode, the biometric impedance is removed from the determination target. For this reason, there is a possibility that the accuracy of automatic recognition is lowered. Therefore, whether or not the automatically recognized user is correct is always determined based on the confirmation display on the display unit 11 and the confirmation operation of the measurer. You may make it preserve | save as.

On the other hand, if the measurement mode is not the body weight only mode (Step 17; N), the control unit 20 measures the bioelectrical impedance (BI) (Step 19).
That is, the control unit 20 calculates the biometric impedance of the measurer from each resistance value supplied from the measurement electrode 12 via the A / D conversion unit 32.

And the control part 20 judges whether the measurement of bioelectrical impedance was completed (step 20).
When the measurement is not completed (step 20; N), the control unit 20 determines whether or not there is a measurement error (step 21). When it is a measurement error (step 21; Y), the control unit 20 proceeds to step 16 to display an error in a predetermined area of the display unit 11 and ends the process. The case where a measurement error is determined is the same as in the case of weight measurement.
On the other hand, if it is not a measurement error (step 21; N), the control unit 20 returns to step 19 and continues the measurement.

Next, the control unit 20 determines whether or not the mode switched in step 10 is the automatic recognition mode (step 22).
If it is not the automatic recognition mode (step 22; N), that is, if it is the user designation mode and the guest mode, the control unit 20 proceeds to step 26 because there is no need for automatic recognition.
On the other hand, when the automatic recognition mode is set (step 22; Y), the control unit 20 performs a measurer identification process for automatically identifying the measurer using the measured weight, bioelectrical impedance, and measurement date and time (measurement time). Perform (step 23). Details of the measurer identification process will be described later.

After the identification of the measurer is completed, the control unit 20 performs a measurer confirmation process (step 24).
That is, the control unit 20 displays the user number corresponding to the automatically recognized measurer on the fifth display unit 115 (see FIG. 4) of the display unit 11. For the measurer confirmation, the displayed user number is confirmed, and if it is correct, the setting key 13d is pressed, and if it is wrong, the user number displayed by the upper key 13a or the lower key 13b is changed. The measurer is confirmed by pressing the setting key 13d later.
The control unit 20 determines the measurer from the user number displayed on the fifth display unit 115 when the measurer presses the setting key 13d.
Note that the control unit 20 displays the automatically identified measurer (user number) on the fifth display unit 115, and when the operation unit 13 is not operated within a predetermined time, and when the measurer performs the biological information measurement apparatus 1. When getting off, it is confirmed to the measurer of the displayed user number.

The control unit 20 determines whether the measurer is confirmed (step 25).
When the measurer is not fixed (step 25; N), that is, when the clear key 13c is pressed, the control unit 20 ends the process.
On the other hand, when the measurer is determined (step 25; Y) and in the user designation mode (step 22; N), the control unit 20 stores the current measurement result (step 26). That is, the control unit 20 stores the weight, bioelectrical impedance, and measurement date / time in the measurement result history data 42 corresponding to the determined user number of the measurer.

Further, in parallel with the storage of the measurement result, the control unit 20 displays the measurement result on the display unit 11 (step 27) and ends the process.
In the display of the measurement result, as illustrated in FIG. 4, the control unit 20 displays the measured body weight value on the first display unit 111, and the body fat percentage value calculated from the body weight, the bioimpedance, and the user information. The display unit 112 displays a level display of the body fat percentage on the third display unit 113.
The fourth display unit 114 displays the item names of items being displayed on the first display unit 111 and the second display unit 112, and the fifth display unit 115 displays the user number and gender of the confirmed measurer. Is displayed.
The second display unit 112 first displays the value of the body fat percentage, and thereafter, every predetermined time (2 seconds in the present embodiment), the body fat percentage, BMI, basal metabolism, skeletal muscle level, bone level, Visceral fat level, water content, body age, body fat percentage are displayed in order. As the second display unit 112 is switched, the level display of the third display unit 113 and the item name of the fourth display unit 114 are also switched and displayed.
The body composition such as the body fat percentage displayed on the second display unit 112 is calculated from the body weight, bioelectrical impedance, and basic information, and the level display of the third display unit 113 is obtained from the statistics of the display item. Calculated based on standard values.

Next, details of the measurer identification process (step 23) will be described.
In the measurer identification process of this embodiment, each element (weight, BI, measurement time) of the measurement result is compared with each history information of each registered user, and the degree of coincidence with each measurement history data is scored. The user who has the highest average score for each user is recognized by the measurer.
That is, the essential condition is that the difference between the measured weight and the weight of the history data is within a predetermined range, and that the difference between the measured BI and the BI of the history data is within a predetermined range (conventional condition), Further, each history data is subjected to a point evaluation using the degree of difference between the current measurement time and the measurement time of the history data as a determination condition. And the score sm (m = 1-3 in this embodiment) is attached | subjected with respect to the historical information which satisfy | fills both essential conditions and satisfy | fills determination conditions.
Then, the total score and the average score for all the history data for each user are obtained, and the user with the highest average score is recognized as the current measurer.

A specific example will be described. As a result of measurement for the measurer, it is assumed that the body weight is 58.6 kg, the bioelectrical impedance (BI) is 525Ω, and the measurement time is 20:35.
The essential conditions are that the weight difference is within ± 2 kg and the BI difference is within ± 100Ω.
The determination condition is that the time difference between the current measurement time and the history measurement time is within t3. If it is within t1, it is s1 point. If it is within t2 (except within t1), it is within s2 point and t3 ( If it is not within t2, the point is s3. Here, t1 = 15 minutes, t2 = 30 minutes, t3 = 1 hour, s1 = 4 points, s2 = 2 points, and s3 = 1 point.

Therefore, the measurement history in which the body weight is in the range of 56.6 kg to 60.6 kg and the bioelectrical impedance is in the range of 425 Ω to 625 Ω satisfies the essential conditions.
Also, 4 points if the measurement time in the measurement history is within 20: 20-20: 50, 2 points if within 20: 5-21: 05 (except 20: 20-20: 50), If it is within 19: 35-21: 35 (excluding 20: 5-21: 5), it will be 1 point.

FIG. 6 illustrates essential conditions and determination conditions corresponding to each history data of each registered user 1 to 4 in the second embodiment.
FIGS. 6A to 6D correspond to the users 1 to 4 and are based on history data including measurement date and time (measurement time) and measurement time (measurement date and time) for each past measurement (history data). Indicates the determination contents.
In FIG. 6, the case where the essential condition (weight, BI) is satisfied is indicated by ◯, and the case where the essential condition is not satisfied is indicated by ×, and the score for the determination condition is indicated.

Indispensable conditions and determination conditions in this embodiment are defined as follows.
That is, the essential condition is that the weight difference is within ± 2 kg and the BI difference is within ± 100Ω.
As a judgment condition, when the time difference of measurement time is within t1 = 0.25 hour (± 0.25 hour range), +4 points, and the time difference is within t2 = 0.5 hour (± 0.5 hour range). In the case (excluding the time difference within 0.25 hours), +2 points, and in the case where the time difference is within t3 = 1 hour (± 1 hour range) (excluding the time difference within 0.25 hours), +1 point is specified.
As for the time difference between the measurement times, other points may be defined in accordance with the time difference between the current measurement time and the measurement time of the measurement history so that the point becomes larger as the time difference is smaller. As the time difference in this case, for example, other time differences such as t1 = 1 hour, t2 = 2 hours, t3 = 3 hours, etc. can be set.

Under this determination condition, in FIG. 6, as a result of measurement for the measurer, the weight was 58.6 kg, the bioimpedance (BI) was 525Ω, and the measurement time was 20:35 on March 09, 2014. As an example, the required condition, the determination result for the determination condition, and the score are displayed.
Therefore, in the example of FIG. 6, the measurement history in which the weight is in the range of 56.6 kg to 60.6 kg and the bioelectrical impedance is in the range of 425 Ω to 625 Ω satisfies the essential conditions.
As for the determination conditions, the measurement history with the measurement time from 20:20 to 20:50 is 4 points, and the measurement time is from 20:05 to 21:05 (excluding 20:20 to 20:50) ) Is 2 points, and the measurement history is from 19:35 to 21:35 (excluding 20:05 to 21:05). In addition, in FIG. 6, although the score according to determination conditions is described irrespective of whether both essential conditions are satisfy | filled, only the score of the measurement log | history which satisfy | fills both essential conditions is described in a measurement person's identification process. Are subject to addition.

When the total score (average score) of all the history data satisfying the two essential conditions is obtained for each user, the user 1 has a total score of 16 points, the average score is 3.2 points, and the user 2 has a total score and an average score. Both points are 0, and the total points of users 3 and 4 are 3 and the average is 0.6. The average score here is an average score for the total history number data of the user. That is, the value excluding the total score is not the number of cases satisfying both essential conditions but the total number of history data.
From the above results, the user 1 (the total score of 16 points and the average score of 3.2 points) having the highest total score (or average score) of all the history data satisfying the essential conditions is identified as the current measurer. .

As shown in FIG. 6, when recognizing the measurer only with the conventional essential condition, the number of histories satisfying the essential condition is the same for both user 1, user 3, and user 4, and the measurer is specified as one user. Can not do it.
On the other hand, according to the present embodiment, the measurement person (user 1) can be more accurately identified by using not only the indispensable condition but also the difference in measurement habits for each user as the determination condition. It becomes possible.

FIG. 7 is a flowchart showing details of the measurer identification process in the second embodiment.
The meaning of each character used in the flowchart of FIG. 7 is as follows.
X: number of registered users N: number of measurement history of user X W: current measurement result (weight)
WH: Measurement history body weight by user X WR: Weight discrimination allowable weight I: Current measurement result (bioimpedance)
IH: Measurement history impedance of user X IR: Bioimpedance identification tolerance T: Current measurement result (measurement time)
TH: Measurement history time of user X

The control unit 20 first obtains an identification allowable range and a score (step 30).
That is, the control unit 20 acquires ± 2 g of the weight identification allowable weight (WR) and ± 100Ω of the bioelectrical impedance identification allowable value (IR) as the allowable ranges for the essential conditions, and the allowable time and score for the determination conditions As follows: ± 0.25 hours of allowable time t1, 4 points, ± 0.5 hours of allowable time t2, 2 points, 1 hour of allowable time t3, 1 point, and save them in the work area.

Then, the control unit 20 repeats the first loop of steps 31 to 31-2 for the number of registered users (X). In the first loop, the control unit 20 repeats the evaluation score conversion process (steps 32-32-2) by the second loop by the number of measurement histories (N) of the registered user X as a target.
First, the control unit 20 determines whether or not the current measurement result (body weight) W is within the range of WH ± WR (kg) (step 33). That is, the control unit 20 reads the Nth measurement history of the user X from the measurement result history data 42 and subtracts the value obtained by adding the weight identification allowable weight WR to the measurement history body weight WH (WH ± WR (kg)). ) Is determined, and it is determined whether or not the current measurement result (body weight) W is within the range of both values obtained (within the allowable body weight range).

If the current measurement result (body weight) W is outside the weight tolerance range (step 33; N), the control unit 20 does not satisfy the essential condition, so that it is not subject to point addition and performs point determination for the next measurement history. .
On the other hand, if the weight is within the allowable range (step 33; Y), the control unit 20 determines whether or not the current measurement result (bioimpedance) I is within the range of IH ± IR (Ω) with respect to the measurement history. Is determined (step 34). That is, the control unit 20 subtracts the value obtained by adding the bioelectrical impedance identification allowable value IR to the measurement history impedance IH of the measurement history (Nth measurement history of the user X) in the loop target (IH ± IR (Ω )) Is determined, and it is determined whether or not the current measurement result (bioimpedance) I is within the range of both values obtained (within the allowable bioimpedance range).

In the present embodiment, the case where it is determined whether or not the current measurement result (body weight) W is within the range of WH ± WR (step 33) has been described. It may be determined whether or not the measurement result (body weight) W is within a range of both values (W ± WR) obtained by adding or subtracting the weight identification allowable weight WR.
Further, the difference between the current measurement result (body weight) W and the measurement history body weight WH by the user X may be calculated, and the determination may be made based on whether or not the absolute value of the difference is equal to or less than the weight identification allowable weight WR. .
Also, instead of storing the current measurement values W and I as measurement results in the measurement result history 42 as they are, the W ± WR values are stored, and the measurement values W are stored in the measurer recognition process on and after the next time. It may be determined whether or not it is within the range of the finished W ± WR.
The above determination can be similarly modified for the determination (step 34) as to whether or not the current measurement result (bioimpedance) I is within the range of I ± IR.

If the current measurement result (bioimpedance) I is outside the allowable range of bioimpedance (step 34; N), the control unit 20 does not satisfy the essential condition, and is determined not to be added, and is added for the next measurement history. I do.
On the other hand, when the bioelectrical impedance is within the allowable range (step 34; Y), since the measurement history satisfies both the essential conditions, the control unit 20 measures the current measurement result (measurement time) T and the user X. A difference ΔT with respect to the history time TH is obtained, and the degree of the difference is determined (step 35).
The controller 20 adds 4 points if the calculated difference ΔT is within ± 15 minutes (step 36), adds 2 points if it is within ± 30 minutes (step 37), and within ± 1 hour. One point is added (step 38).

  After the evaluation score scoring process in steps 33 to 38 is repeated by the number of measurement histories (N) for the user X, the control unit 20 calculates the average score of the user X (step 39).

  Similarly, the control unit 20 calculates evaluation points (average points) for all users (steps 31 to 31-2), and whether there is a user who may be a measurer from the evaluation points of all users. Is determined (step 40). That is, when the average score of all users is 0, the control unit 20 determines that there is no registered user that may be a measurer (no corresponding user). In addition, you may make it judge that there is no applicable user, when the average score of all the users is below a predetermined reference point.

When there is no corresponding user (step 40; N), the control unit 20 determines that the current measurer is not a registered user but a guest (step 41), and returns to the main routine.
On the other hand, when there is a corresponding user (step 40; Y), the control unit 20 determines the user having the highest evaluation score (total score, average score) as the current measurer (step 42), and returns to the main routine. To do.

In step 42, there may be a plurality of registered users who have the highest evaluation score (total score, average score> 0 points).
For example, in FIG. 6, assuming that the user 1 is not registered, the evaluation score of the user 3 and the user 4 is a total of 3 points, and the average score is 0.6 points, and the same score is obtained.
In such a case, a user whose evaluation on the measurement history of bioelectrical impedance is closest to the current measurement value is recognized as a measurer. Specifically, the measurer is authorized by any one of the following methods (a) to (c).
As described above, when the measurer cannot be identified only by the highest score, the measurer is certified using the bioimpedance instead of the body weight among the essential conditions for the following reason. That is, while the weight varies greatly in the short-term depending on conditions such as the timing of measurement before and after meals and the presence or absence of overdrinking, the bioimpedance is a value that hardly changes depending on such conditions. .

(A) Among essential conditions, a registered user who has the largest number of measurement histories that does not satisfy the allowable range of weight but satisfies the allowable range of bioelectrical impedance is certified as a measurer.
(B) Among the essential conditions, the weight (acceptable range) is not satisfied, but the biometric impedance has the highest evaluation score (total score, average score) when a measurement history satisfying the acceptable range is added to the determination condition. Authorize registered users as measurers.
(C) The registered user having the smallest difference (absolute value) between the biometric impedance of the measurement history and the bioimpedance measured this time for each user is certified as a measurer.

In the example of FIG. 6 (excluding user 1), when the above (a) is applied, the number of measurement histories satisfying the allowable range of bioimpedance for both user 3 and user 4 is equal to 5, The measurer cannot be identified.
On the other hand, when (b) is applied, the total value of the user 3 increases from 3 points and the average score of 0.6 to 4 points and the average score of 0.8 points, whereas the user 4 increases the total score of 3 points. Since the average score is 0.6, the measurer can be recognized as the user 3.
When (c) is applied, the average value of the bioelectrical impedance of the measurement history is 525.4Ω for the user 3 and 516.8Ω for the user 4. Therefore, the user 3 having the smallest difference (absolute value) from the bioimpedance 525Ω measured this time can be recognized as the measurer.
In addition, about the recognition by (c), you may make it perform when it cannot authenticate by (a) and (b).

  As described above, according to the present embodiment, not only the measurement history of body weight and bioelectrical impedance, but also the measurement person's recognition including the measurement time, which is a feature when the user measures, is performed. It becomes possible to recognize the measurer accurately.

The embodiments of the present invention have been described above. However, the present invention is not limited to the described embodiments and the described modifications, and various modifications can be made within the scope described in each claim. .
For example, in the embodiment and modification described above, the measurement result history 42 stores the weight, bioimpedance (BI), and measurement date and time as measurement results, as shown in FIG. It is determined whether or not the essential condition is satisfied depending on whether or not the other value is included in the value obtained by adding the allowable value to any one of the above or whether the absolute value of the difference is equal to or smaller than the allowable value. Explained when to do.
As described above, the embodiment describes the case where the measurement value has a predetermined width. However, the history value is saved with a width (for example, 425Ω to 625Ω), and the measurement value is included in the history data. It may be determined whether or not there is.

FIG. 8 shows the stored contents of the measurement result history 42 in the modified example.
In this modified example, as shown in FIG. 8, values obtained by adding allowable values ± WR and ± IR to the current measured values W and I are stored, and allowable time ± t1 hours (= 0.25 hours), ± t2 hours (= 0.5 hours), and ± t3 hours (= 1 hour).
As described above, the processing can be facilitated by storing the values obtained by adding or subtracting the allowable value and the allowable time in advance as the measurement history, instead of storing the value of the measurement value itself.
In addition, when a measured value is required later, it can be easily known by obtaining a median value (average value) of both values obtained by addition and subtraction.

In the measurer identification process described with reference to FIG. 7, the case has been described in which the average value of points for each measurement history for each user is calculated (step 37), and the user with the largest average value is recognized as the measurer.
On the other hand, when the number of measurement history data for each user is the same, the user having the largest total score may be recognized as the measurer.

Further, in the measurer identification processing of both embodiments described above, the case where the measurer is recognized for all measurement history data for each user has been described.
On the other hand, the measurement history data measured within a predetermined period from the current measurement date (or measurement date) may be targeted. That is, an old history (for example, history data measured before m months from the current measurement) may be excluded.
By excluding old history data, recognition accuracy can be further improved.
In this case, since there is a high possibility that the number of histories measured within m months from the current measurement is different for each user, the user having the highest average score is recognized as the measurer, not the total score.
In the embodiment and each modification described above, the measurement time is used as the determination condition. Therefore, the current detection and the measurement history data to be stored can be targeted only for the measurement time. In this case, it is necessary to detect and store not only the measurement time but also the measurement date and time (year / month / day / time).

  Further, among the measurement history data of each user, the measurer may be recognized with respect to one history data measured (stored) last.

  Further, in both of the described embodiments and modifications, the difference between the measured weight and the weight of the history data is within a predetermined range, and the difference between the measured BI and the history data BI is within the predetermined range. Although both of these are the essential conditions, only one of them may be the essential condition for comparison.

In the described embodiment, the determination condition is that the time difference between the current measurement time and the history measurement time is within t3, and the degree of difference from the current measurement time is within t1 and within t2 (within t1). ), And the case where it is divided into three stages within t3 (excluding within t2).
On the other hand, the time difference t3 may be defined not in three steps but in two steps or four steps or more. Even in this case, a higher score is assigned to the measurement history closer to the current measurement time.
Further, it may be one stage when the time difference is within t3.

DESCRIPTION OF SYMBOLS 1 Biological information measuring device 10 Apparatus main body 11 Display part 12 Measuring electrode 13 Operation part 13a Up key 13b Down key 13c Clear key 13d Setting key 14 Power switch 15 Weight sensor 16 Push switch 31, 32 A / D conversion part 33 Date / time information Measuring unit 34 Communication unit 35 Audio output unit 40 Non-volatile memory

Claims (7)

A weight measuring means for measuring the weight of the measurer;
Bioimpedance measuring means for measuring the bioimpedance of the measurer;
Measurement time detection means for detecting the measurement time measured by the measurer;
User registration means for registering the user of the measurer;
Measurement history storage means for storing at least one of the measured body weight and bioelectrical impedance, and the detected measurement time as a measurement history for each user;
The user is determined by at least one of the difference between the weight measured this time and the weight of the measurement history, the difference between the bioimpedance measured this time and the bioimpedance of the measurement history, and the time difference between the current measurement time and the measurement time of the measurement history. User recognition means for recognizing;
A biological information measuring device comprising: The user registration means stores gender, age identification information, height as basic information for each user,
Body composition calculating means for calculating the body composition of the user from the measured weight and bioelectrical impedance and the stored basic information corresponding to the recognized user;
Output means for outputting the measured body weight and the calculated body composition or bioelectrical impedance;
The biological information measuring device according to claim 1, further comprising: It said user recognition means, at least one of a difference between the difference and the bioimpedance This time bioimpedance and the measurement history of the measurement of the weight of currently measured body weight and measurement histories is within a predetermined range, and, this time measurement time An evaluation score is assigned to the measurement history in which the time difference between the measurement history and the measurement time is within a predetermined range, and the total value of the evaluation scores for each user or the user with the highest average value is measured. Recognize as a person,
The living body information measuring device according to claim 1 or 2 characterized by things. The user recognition means attaches a higher evaluation score as the time difference is smaller.
The living body information measuring device according to claim 3 characterized by things. When there are a plurality of users having the highest total value or average value of the evaluation points, the user recognition means does not satisfy the allowable range of the body weight among the users, but satisfies the allowable range of the bioelectrical impedance. Authorize the user with the largest number of measurement histories as a measurer,
The biological information measuring device according to claim 3, wherein the biological information measuring device is a biological information measuring device. When there are a plurality of users having the highest total value or average value of the evaluation points, the user recognition unit does not satisfy the allowable range of the body weight among the users, but the bioelectrical impedance satisfies the allowable range. A total of the evaluation points when the evaluation points are given to the measurement history, or a registered user with the highest average score is recognized as a measurer,
The biological information measuring device according to claim 3, wherein the biological information measuring device is a biological information measuring device. When there are a plurality of users having the highest total value or the average value of the evaluation points, the user recognition means calculates the absolute difference between the average value of the bioimpedance in the measurement history and the bioimpedance measured this time for the user. Certify the user with the lowest value as the measurer,
The biological information measuring device according to claim 3, wherein the biological information measuring device is a biological information measuring device.

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