WO2010073682A1 - 重量測定装置 - Google Patents
重量測定装置 Download PDFInfo
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- WO2010073682A1 WO2010073682A1 PCT/JP2009/007220 JP2009007220W WO2010073682A1 WO 2010073682 A1 WO2010073682 A1 WO 2010073682A1 JP 2009007220 W JP2009007220 W JP 2009007220W WO 2010073682 A1 WO2010073682 A1 WO 2010073682A1
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- 238000005259 measurement Methods 0.000 claims abstract description 125
- 230000001133 acceleration Effects 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 16
- 230000005484 gravity Effects 0.000 claims 1
- 238000000691 measurement method Methods 0.000 claims 1
- 238000004904 shortening Methods 0.000 abstract description 2
- 230000037396 body weight Effects 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 210000000577 adipose tissue Anatomy 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 206010003694 Atrophy Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/44—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing persons
- G01G19/50—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing persons having additional measuring devices, e.g. for height
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/14—Devices for determining tare weight or for cancelling out the tare by zeroising, e.g. mechanically operated
- G01G23/16—Devices for determining tare weight or for cancelling out the tare by zeroising, e.g. mechanically operated electrically or magnetically operated
Definitions
- the present invention relates to a weight measuring device that measures, for example, the weight of a living body, and in particular, a weight measuring device that can eliminate a 0 kg measurement (measurement in an initial state in which a user is not on) using multiple measurements. About.
- the 0 kg state that is the reference value varies depending on the installation location and inclination of the weight measuring device. Since the above-described automatic weight measuring system for pets obtains a reference value in advance by calibration, an error due to an installation environment after factory shipment occurs.
- an object of the present invention is to correctly recognize the state of 0 kg and reduce the time required for weight measurement.
- the present invention is a weight measuring device or a weight measuring method provided with a weight measuring means for measuring weight, an initial value measuring means for measuring an output value of the weight measuring means in an initial state in which the measurement object is not on, and Storage means for storing a plurality of measured initial values, initial reference value creating means for creating an initial reference value when variations of the plurality of initial values are within a predetermined range, and weight measurement of a measurement object by the weight measuring means It is possible to provide a weight measuring apparatus or a weight measuring method provided with an initial reference value applying means for performing measurement using the initial reference value.
- the initial value can be an output value of the initial weight measuring means. Thereby, accurate weight measurement can be realized in a short time.
- the initial reference value creation means is configured to store the created initial reference value in the storage means, and the initial reference value application means has the initial reference value stored in the storage means. If the initial reference value is stored in the storage means, the initial value measured by the initial value measuring means when the initial reference value is not stored in the storage means is used.
- a measurement initial value applying means for measuring the weight of the measurement object can be provided.
- the initial value is measured each time, and accurate weight measurement using the initial value can be performed. After the initial reference value is created, the initial reference value is used. Weighing can be performed accurately in a short time.
- an update necessity determination unit that determines whether or not the initial reference value needs to be updated is provided, and when the update necessity determination unit determines that the update is necessary, the initial reference value stored in the storage unit It is possible to provide a means for disabling the initial reference value.
- the initial reference value disabling means is a means for deleting the initial reference value stored in the storage means, or a means for changing the operation so as to perform processing without using the initial reference value stored in the storage means. It can be configured by appropriate means.
- This mode makes it possible to reliably update the initial reference value when it is necessary.
- the storage means stores the output value of the weight measurement means after each weight measurement as a post-measurement value
- the update necessity determination means has an initial value before the start of weight measurement. The initial value is compared with the latest post-measurement value read from the storage means, and if there is a predetermined change, it is determined that updating is necessary, and otherwise, it is determined that updating is unnecessary. Can do.
- the predetermined change can be determined as an appropriate change, such as a change in strain value of a certain amount or more. According to this aspect, it is possible to update the initial reference value if the state of the weight measuring unit has changed from the previous measurement. Therefore, it is possible to prevent the old initial reference value from being continuously used even if the situation changes.
- the present invention includes a time measuring unit that measures the passage of time, and the update necessity determining unit determines that the update is necessary if a predetermined time has passed since the creation of the initial reference value by the initial reference value creating unit. Otherwise, it can be configured to determine that updating is unnecessary.
- the initial reference value can be updated every predetermined period, and the initial reference value can always be updated. Therefore, even if the initial state of the weight measuring means changes due to secular change or the like, it can be updated to the initial reference value corresponding to the change.
- the update necessity determination unit determines that the update is necessary when there is a change in the output value of the weight measurement unit when the weight measurement of the measurement target is not performed, otherwise It can be set as the structure determined as the update unnecessary.
- the apparatus includes an acceleration detection unit that detects a change in acceleration due to movement or vibration, and the update necessity determination unit determines that the update is necessary when the acceleration detection unit detects a change in acceleration. Otherwise, it can be configured to determine that updating is unnecessary.
- display means for displaying whether the weight is measured using the initial value measured by the initial value measuring means or whether the weight is measured using the initial reference value stored in the storage means Can be provided. Thereby, it can be confirmed whether the initial value measured immediately before the weight measurement is used or whether the initial reference value stored in the storage means is used.
- This invention can correctly recognize the state of 0 kg and reduce the time required for weight measurement.
- the perspective view which shows the external appearance of a body composition meter The block diagram which shows the structure of a body composition meter and a server.
- FIG. 1 is a perspective view showing an appearance of a body composition meter 100 having a function of a scale
- FIG. 2 is a block diagram showing a configuration of the body composition meter 100 and a server 150 that can communicate with the body composition meter 100. It is.
- one body composition meter 100 is connected to the server 150, but a plurality of different body composition meters 100 and biological information acquisition devices such as pedometers and activity meters are connected to the server 150. May be.
- the body composition meter 100 includes a display operation unit 110 (BFA unit: body fat analyzer unit) which is a first casing that a user holds by hand, and a second casing on which the user rides. It is mainly composed of a certain weight measuring unit 130 (SCALE unit).
- BFA unit body fat analyzer unit
- SCALE unit weight measuring unit
- the display operation unit 110 includes a communication unit 111, a storage unit 112, a timing unit 113, an operation unit 114, a display unit 115, a constant current circuit unit 116, a power supply unit 117, a control unit 118, a double integral AD.
- a unit 119, an impedance detection unit 120, and an electrode unit 121 are provided.
- the communication unit 111 is connected to the control unit 118 and communicates with the server 150 in accordance with a control signal from the control unit 118.
- the communication unit 111 is not limited to the server 150, and communicates with other biological information acquisition devices such as a pedometer, or communicates with a personal computer or a portable information terminal (such as a PDA or a cellular phone). You may make it the structure which communicates with.
- the storage unit 112 is configured by a device capable of storing information such as a non-volatile memory and a hard disk, and reads and writes information according to a control signal from the connected control unit 118.
- This storage unit 112 stores past 0 kg state measurement values and also stores 0 kg reference values.
- the time measuring unit 113 (time measuring means) is a device for measuring time such as the current date and time, and sends the time to the control unit 118 as necessary.
- the operation unit 114 includes a plurality of buttons that are pressed (see FIG. 1), and sends input information that is pressed by the user, such as input of user information such as weight and height, to the control unit 118.
- the display unit 115 is configured by a display device such as a liquid crystal screen (see FIG. 1), and displays images such as characters and figures in accordance with image signals sent from the control unit 118. Based on the control of the control unit 118, the constant current circuit unit 116 causes a high-frequency (alternating current) current supplied from the power supply unit 117 to flow in one direction through the electrode portion 121 for current application.
- a display device such as a liquid crystal screen (see FIG. 1)
- the power supply unit 117 supplies operating power to each unit including the control unit 118.
- the control unit 118 includes a CPU, a ROM, a RAM, or a microcomputer (microcomputer), and executes control operations and arithmetic operations of each unit according to a program stored in the ROM or the like.
- the double integration AD unit 119 is a double integration type AD (analog / digital) conversion unit that converts an analog signal supplied from the impedance detection unit 120 into a digital signal.
- AD analog / digital
- the impedance detection unit 120 detects impedance based on a potential difference between the electrode unit 136 provided in the body weight measurement unit 130 and the electrode unit 121 provided in the display operation unit 110.
- the electrode unit 121 is provided on the surface of the grip portion (see FIG. 1) of the display operation unit 110 held by a user's hand, and a high frequency supplied from the power source unit 117 to the palm of the user holding the grip portion. (AC) current is applied.
- the body weight measurement unit 130 includes an operation unit 131, a battery 132, a load detection unit 133, and an electrode unit 136.
- the operation unit 131 functions as an input switch for switching the power ON / OFF, and sends the input signal that has been input to the control unit 118.
- the battery 132 supplies power to each unit with the power source unit 117 at the center.
- the load detection unit 133 has a built-in load cell 134 and measures the weight of the user who rides on the upper surface cover unit 135 (see FIG. 1) that also serves as the upper surface cover of the housing. The weight measured at this time is sent to the double integration AD unit 119.
- the load cell 134 employs a strain gauge type detection method, in which a strain gauge is attached to an elastic body called a strain generating body, and the strain value of the strain gauge is output. The weight can be measured using the proportional relationship between the strain value and the stress (force due to weight).
- the electrode unit 136 is provided on the surface of the upper surface portion (see FIG. 1) of the weight measurement unit 130 on which the user rides, and is an electrode for current measurement that receives current flowing from the sole of the user. .
- This electrode part 136 is configured by four electrodes on the user's left toe side, left toe side, right toe side, and right toe side.
- the server 150 includes a communication unit 151, a control unit 152, an operation unit 153, a display unit 154, and a storage unit 155.
- the communication unit 151 transmits and receives data to and from the body composition meter 100 according to the control of the control unit 152.
- the control unit 152 includes a CPU, a ROM, and a RAM, and executes a control operation and a calculation operation of each unit in accordance with a program stored in the ROM or the like.
- the operation unit 153 includes an operation input device such as a keyboard and a mouse, and sends an input signal input by the operation to the control unit 152.
- the display unit 154 includes a display device such as a liquid crystal display or a CRT display, and performs display according to a control signal from the control unit 152.
- the storage unit 155 is configured by a storage device such as a hard disk, and includes body composition data (body fat data and weight data) measured by the body composition meter 100, step count data measured by a pedometer (not shown), and an activity meter (not shown).
- body composition data body fat data and weight data measured by the body composition meter 100
- step count data measured by a pedometer not shown
- an activity meter not shown
- Various data relating to the living body such as the activity amount data measured in step 1 and personal information such as the name and address of the user, are stored.
- the biological information acquisition system 101 is configured by the body composition meter 100 and the server 150 configured as described above, and other biological information acquisition devices such as a pedometer and an activity meter (not shown). Note that other biological information acquisition devices such as a pedometer and an activity meter (not shown) perform data communication with the server 150 through the communication unit 151, and appropriate data such as the number of steps, a walking waveform, and an activity amount are stored in the storage unit 155 of the server 150.
- a pedometer and an activity meter perform data communication with the server 150 through the communication unit 151, and appropriate data such as the number of steps, a walking waveform, and an activity amount are stored in the storage unit 155 of the server 150.
- appropriate data such as the number of steps, a walking waveform, and an activity amount are stored in the storage unit 155 of the server 150.
- FIG. 3 is a flowchart showing an operation in which the control unit 118 of the body composition meter 100 measures body weight using the 0 kg reference value.
- the control unit 118 determines whether or not the 0 kg reference value is stored in the storage unit 112 (step S201), and if stored (step S201: No), the 0 kg reference value is used as the weight measuring 0 kg value. (Step S203), the process proceeds to Step S208. At this time, the time required to set the 0 kg reference value to be used is very short, for example, less than 0.1 seconds.
- step S201: Yes the control unit 118 executes the 0 kg state measurement process by the load detection unit 133 to acquire the 0 kg state measurement value (step S202). .
- the 0 kg state measurement process it takes some time, for example, 3 to 10 seconds to complete the measurement.
- control unit 118 When the 0 kg state measurement is completed and the 0 kg state measurement value is acquired, the control unit 118 performs the 0 kg state measurement for a predetermined number of times (for example, 10 times) or more together with the 0 kg state measurement value accumulated in the storage unit 112 in the past. It is determined whether or not there is (step S204).
- step S204 the control unit 118 adopts the 0 kg state measurement value obtained in step S202 as it is for the weight measurement 0 kg value, and proceeds to step S208.
- step S205 This standard deviation measurement is a process for obtaining the variation of the accumulated 0 kg state measurement value including the 0 kg state measurement value acquired in step S202, and obtains the standard deviation of this variation. For example, about 0.5 seconds are required to calculate this variation.
- step S206 the control unit 118 adopts the 0 kg state measurement value obtained in step S202 as it is as the 0 kg value for weight measurement, and proceeds to step S208.
- step S206 If the variation is within the specified value (step S206: Yes), the control unit 118 calculates the average value of the 0 kg state measurement values accumulated including the 0 kg state measurement value acquired in step S202, and sets the average value to 0 kg.
- the reference value is stored in the storage unit 112 (step S207). This calculation and storage requires, for example, about 0.5 seconds.
- the control unit 118 sets either the 0 kg state measured value acquired in step S202 or the 0 kg reference value calculated in step S207 as the weight measuring 0 kg value. It may be set in advance which one is used as the weight measuring 0 kg value.
- the control unit 118 performs body weight measurement to acquire an output value output from the load detection unit 133 while the user is on the top cover unit 135 (step S208).
- control part 118 takes the difference with the 0 kg value for weight measurement about the output value acquired by step S208, outputs this difference as a body weight value (step S209), turns off the power (step S210), and complete
- This output can be executed by an appropriate method such as displaying on the display unit 115, storing in the storage unit 112, or transmitting to the server 150.
- FIG. 4 is a flowchart showing the detailed operation of the 0 kg state measurement process in step S202 described above.
- the control unit 118 acquires strain values of the four load cells 134 (see FIG. 2) provided in the load detection unit 133 (step S221). This strain value is obtained from the current strain value.
- the control unit 118 checks whether or not the number of strain value acquisitions is greater than or equal to the specified number (step S222). If it is less than the specified number of times (step S222: No), the process returns to step S221, and the strain value is acquired again.
- control unit 118 calculates a moving average (X times moving average) of the acquired values so far to obtain a moving average value (step S223).
- the control unit 118 checks the change of the moving average value, and if the change amount is large (step S224: large change amount), the process returns to step S221 to execute the acquisition of the strain value again.
- step S224 small change amount
- the control unit 118 determines that the moving average value is the degree of distortion in the current 0 kg state (step S225), and ends the process.
- the measurement of the body fat percentage by the body composition meter 100 is performed by executing a predetermined arithmetic expression based on the impedance measured by the impedance detector 120.
- the body composition meter 100 is measured with the initial value measuring means (the control unit 118 that executes Step S202) that measures the output value in the initial state (0 kg state) in which the user is not riding.
- a storage unit storage unit 112 for storing a plurality of initial values, and an initial reference value generating unit (step S207) for generating an initial reference value when variations in the plurality of initial values are within a predetermined range (within a specified value).
- the weight of 0 kg is always measured before starting the weight measurement, it takes about 3 to 10 seconds each time, and the measurement cannot be started immediately.
- about 10 times from the start of measurement 0 kg is measured each time, and the 0 kg state of the body composition meter is stored for each measurement, and if the variation is low, this average value is set as the 0 kg reference value, and thereafter 0 kg You can measure the weight by shortening the time required for measurement. As a result, the measurement time can be shortened by utilizing the fact that once the body composition meter 100 is placed at the measurement location, the 0 kg state of the body composition meter 100 remains substantially unchanged.
- the next 0 kg state measurement value can be predicted, and the time required for the measurement of the 0 kg state can be omitted.
- FIG. 5 is a block diagram showing the configuration of the body composition monitor 100A.
- an acceleration sensor 137 is provided in the weight measuring unit 130A.
- the acceleration sensor 137 detects a change in acceleration due to movement or vibration, and transmits the detected acceleration signal to the control unit 118.
- An appropriate acceleration sensor can be used, but a three-dimensional acceleration sensor is preferable for detecting movement or vibration in any direction.
- FIG. 6A and 6B are explanatory diagrams of data stored in the storage unit 112 of the body composition meter 100A.
- FIG. 6A shows the 0 kg reference value data 161
- FIG. 6B shows the 0 kg state measurement value data 162. Yes.
- the 0 kg reference value data 161 stores the set date acquired from the time measuring unit 113 at the time of setting and the 0 kg reference values A to D determined for each of the four load cells 134. .
- the 0 kg reference value data 161 is configured as one record data storing only one data for each item.
- the 0 kg state measurement value data 162 stores the measurement date acquired from the timekeeping unit 113 at the time of measurement and the 0 kg state measurement values A to D respectively measured for the four load cells 134. ing.
- This 0 kg state measurement value data 162 stores the strain values of the four load cells 134 measured in step S221 described in the first embodiment together with the measurement date, and is stored multiple times (in this embodiment, 10 times). It is configured so that it can be memorized. Data is stored in order from the first record, and when data is stored up to the last record, it returns to the first record and is overwritten. Thereby, a plurality of latest data can be stored.
- FIG. 7 is an explanatory diagram for explaining display contents displayed on the display unit 115 of the body composition monitor 100A.
- the display unit 115 includes a weight display unit 115a for displaying the measured weight, and a calibration indicating that the weight is obtained by measuring the 0 kg state immediately before and using the measured value of the 0 kg state. And an action display portion 115b.
- step S201 If there is no 0 kg reference value in step S201 of the first embodiment described above (step S201: Yes), “calibration” is displayed on the calibration display unit 115b as shown in FIG. When there is a 0 kg reference value in step S201 of the first embodiment described above (step S201: No), no display is performed on the calibration display unit 115b, and the weight display unit 115a is displayed as shown in FIG. 7B. Display weight.
- the display of the calibration display unit 115b is not limited to displaying “calibration” as shown in the figure, but may be other words such as “just before adjustment”, or displaying an appropriately defined figure. Can be displayed.
- FIG. 8 is a flowchart showing an operation in which the control unit 118 of the body composition meter 100A resets the 0 kg reference value as necessary and measures the body weight using the 0 kg reference value.
- the control unit 118 determines whether or not the 0 kg reference value needs to be reset (step S231). This determination is made based on whether or not a predetermined condition is met. Specifically, it is determined that resetting is necessary when the current date has passed a predetermined number of days from the set date stored in the 0 kg reference value data 161 of the storage unit 112, and resetting is performed otherwise. It may be determined that it is unnecessary.
- the 0 kg state measurement values of the four load cells 134 are measured, and the 0 kg state measurement values A to D of the latest latest load cell 134 from the 0 kg state measurement value data 162 of the storage unit 112 (in this case, the weight measurement is completed) It is preferable to obtain a 0 kg state measurement value measured later), and compare these to determine that a reset is necessary when there is a change of a predetermined amount or more.
- the storage unit 112 may be configured to store the acceleration change amount and the change date. Then, when the detection time of the acceleration change is newer than the latest measurement in the past, it may be determined that resetting is necessary because there is a change in acceleration due to movement or the like.
- a plurality of determination criteria such as the number of days, the 0 kg state, and the acceleration change as described above may be used as the predetermined criteria, and it may be determined that resetting is necessary if any one of the determination criteria is met.
- step S231: Yes the control unit 118 deletes the 0 kg reference value data 161 in the storage unit 112 (step S232), and executes the 0 kg reference value determination process (step S232). S233). At this time, the 0 kg state measurement value data 162 may be deleted.
- step S231: No the control unit 118 executes a 0 kg reference value determination process (step S233).
- This 0 kg reference value determination process is the same as steps S201 to S207 of the first embodiment described above, and detailed description thereof is omitted. Accordingly, if it is determined in step S231 that resetting is necessary, measurement of the 0 kg state in step S202 is executed, and if it is determined in step S231 that resetting is not necessary, the 0 kg reference value is used in step S203. become.
- the control unit 118 executes a weight measurement process (step S234).
- This weight measurement process is the same as the steps S208 to S209 of the first embodiment described above, and detailed description thereof is omitted.
- step S209 when displaying the measured body weight on the display unit 115, as shown in FIG. 7A, whether or not calibration (adjustment of the 0 kg reference value) was performed immediately before (calibration display unit 115b). ) Is also displayed at the same time.
- the control unit 118 determines whether or not the 0 kg reference value needs to be reset, determines the 0 kg reference value, performs weight measurement, turns off the power, and ends the process (step S235).
- strain values (strain gauge values) measured by the four load cells 134 are stored as the 0 kg state measured values A to D, the inclination of the bottom surface can be determined by comparing them. That is, when a person is not on the vehicle, only the weight of the body composition meter 100A is applied to the strain gauge, so that the inclination of the bottom surface can be determined by comparing this. Thereby, the error of the weight measurement by the inclination of a bottom face can be prevented.
- the weight scale body composition meter 100A
- the 0 kg reference value is erased (reset) and the 0 kg state is measured from the beginning.
- a 0 kg reference value can be set.
- the 0 kg reference value is adjusted to an optimum state at that location, so that the user does not need to perform complicated operations.
- the 0 kg reference value can be reset. Since it is executed, accurate weight measurement can be executed in an optimal state at all times.
- Example 1 since resetting of the 0 kg reference value is executed even when a predetermined time has elapsed, even if a change occurs in the 0 kg state due to secular change or the like, it can be readjusted and accurately measured. Moreover, the same effect as Example 1 can also be acquired.
- the measurement of 0 kg is performed before the weight measurement.
- the present invention is not limited to this, and may be configured to be performed after the weight measurement or may be configured to be performed before and after the weight measurement. .
- the measurement is performed before and after the body weight measurement, if there is a difference in the strain value of the 0 kg state measured before and after, the average value of the measured values of the 0 kg state measured before and after is used, or an error is displayed on the display unit 115 and remeasured The accuracy can be further increased.
- time stored in the 0 kg reference value data 161 and the 0 kg state measurement value data 162 is the year, month, day, the time is not limited to this, and can be an appropriate unit capable of determining the passage of time. .
- the weight measuring device of the present invention corresponds to the body composition meter 100, 100A of the embodiment, Similarly,
- the storage means corresponds to the storage unit 112
- the timing means corresponds to the timing unit 113
- the display means corresponds to the display unit 115
- the initial reference value applying means corresponds to the control unit 118 that executes step S203
- the measurement initial value applying means corresponds to the control unit 118 that executes Step S204: NO and Step S206: NO
- the initial reference value creating means corresponds to the control unit 118 that executes step S207
- the initial value measuring means corresponds to the control unit 118 that executes Step S221
- the update necessity determination unit corresponds to the control unit 118 that executes Step S231
- the initial reference value disabling means corresponds to the control unit 118 that executes step S232
- the weight measuring means corresponds to the load cell 134
- the acceleration detection means corresponds to the acceleration sensor 137
- the initial reference value corresponds to the 0 kg reference values A to D
- the present invention is used for an apparatus for measuring the weight of a living body, such as a weight scale for measuring a human body weight or an animal weight scale for measuring the weight of an animal, or for an apparatus for measuring the weight of an article. It can be used in various fields where measurement is performed.
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Measurement Of Distances Traversed On The Ground (AREA)
- Medical Treatment And Welfare Office Work (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
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Abstract
Description
前記初期値は、初期の重量測定手段の出力値とすることができる。
これにより、短時間で精度の良い重量測定を実現することができる。
この態様により、前回の測定時と重量測定手段の状態が変化していれば初期基準値を更新することが可能になる。従って、状況が変わっても古い初期基準値を使用し続けることを防止できる。
これにより、重量測定直前に測定された初期値を用いたのか、それとも記憶手段に記憶された初期基準値を用いたのかを確認することができる。
操作部114は、押下操作される複数のボタン(図1参照)により構成されており、体重や身長といった利用者情報の入力など、利用者に押下操作された入力情報を制御部118へ送る。
定電流回路部116は、制御部118の制御に基づいて、電源部117から供給される高周波(交流)電流を電流印加用の電極部121に一方向に流す。
制御部118は、CPUとROMとRAMあるいはマイコン(マイクロコンピュータ)により構成されており、ROM等に記憶されているプログラムに従って各部の制御動作や演算動作を実行する。
操作部131は、電源のON/OFFを切り替えるための入力スイッチとして機能し、入力された入力信号を制御部118へ送る。
荷重検知部133は、ロードセル134を内蔵しており、筐体の上面カバーを兼ね備える上面カバー部135(図1参照)の上に乗った利用者の体重を測定する。このとき測定した体重は、二重積分AD部119へ送られる。なお、ロードセル134は、ひずみゲージ式の検出方法を採用しており、起歪体と呼ばれる弾性体にひずみゲージが貼り付けられ、このひずみゲージのひずみ値を出力するものである。このひずみ値と応力(重量による力)との比例関係を利用して重量を測定することができる。
通信部151は、制御部152の制御に従って体組成計100とデータの送受信を行う。
操作部153は、キーボードやマウスといった操作入力装置で構成されており、操作入力された入力信号を制御部152へ送る。
記憶部155は、ハードディスクなどの記憶装置により構成され、体組成計100で測定した体組成データ(体脂肪データや体重データ)、図示省略する歩数計で測定した歩数データ、図示省略する活動量計で測定した活動量データ、および利用者の氏名や住所といった個人情報など、生体に関する種々のデータが記憶されている。
制御部118は、記憶部112に0kg基準値が記憶されているか否か判定し(ステップS201)、記憶されていれば(ステップS201:No)、その0kg基準値を体重測定用0kg値として使用し(ステップS203)、ステップS208へ処理を進める。このとき、使用する0kg基準値を設定するまでに要する時間は、例えば0.1秒未満と非常に短い時間になる。
制御部118は、荷重検知部133に設けられた4つのロードセル134(図2参照)のひずみ値を取得する(ステップS221)。このひずみ値は、現在のひずみ値が取得値となる。
体組成計100による体脂肪率の測定は、インピーダンス検知部120により測定したインピーダンスをもとに所定の演算式を実行することで行う。
図5は、体組成計100Aの構成を示すブロック図である。この体組成計100Aには、体重測定部130Aに加速度センサ137が設けられている。加速度センサ137は、移動や振動による加速度の変化を検出し、検出した加速度信号を制御部118に伝達する。なお、加速度センサには、適宜のものを用いることができるが、どのような方向への移動や振動でも検出するためには3次元の加速度センサが好ましい。
制御部118は、電源がONされると、0kg基準値の再設定が必要か否か判定する(ステップS231)。この判定は、所定条件に該当するか否かによって行う。具体的には、記憶部112の0kg基準値データ161に記憶されている設定年月日から現在日が所定日数以上経過している場合に再設定が必要と判定し、そうでなければ再設定不要と判定するとよい。
また、再設定不要と判定した場合(ステップS231:No)、制御部118は、0kg基準値決定処理を実行する(ステップS233)。
また、実施例1と同一の効果も得ることができる。
この発明の重量測定装置は、実施形態の体組成計100,100Aに対応し、
以下同様に、
記憶手段は、記憶部112に対応し、
計時手段は、計時部113に対応し、
表示手段は、表示部115に対応し、
初期基準値適用手段は、ステップS203を実行する制御部118に対応し、
測定初期値適用手段は、ステップS204:NOおよびステップS206:NOを実行する制御部118に対応し、
初期基準値作成手段は、ステップS207を実行する制御部118に対応し、
初期値測定手段は、ステップS221を実行する制御部118に対応し、
更新要否判定手段は、ステップS231を実行する制御部118に対応し、
初期基準値不使用化手段は、ステップS232を実行する制御部118に対応し、
重量測定手段は、ロードセル134に対応し、
加速度検出手段は、加速度センサ137に対応し、
初期基準値は、0kg基準値データ161の0kg基準値A~Dに対応し、
初期値は、0kg状態測定値に対応し、
所定時間は、所定日数に対応し、
重量測定手段の出力値は、ひずみ値に対応し、
測定対象は、利用者に対応し、
所定の変化は、所定量以上の変化に対応し、
所定範囲は、規定値に対応し、
初期状態は、利用者が乗っていない状態に対応するが、
この発明は、上述の実施形態の構成のみに限定されるものではなく、多くの実施の形態を得ることができる。
Claims (12)
- 重量を測定する重量測定手段を備えた重量測定装置であって、
測定対象が乗っていない初期状態の重量測定手段の出力値の測定を行う初期値測定手段と、
測定した初期値を複数記憶する記憶手段と、
該複数の初期値のばらつきが所定範囲内にある場合に初期基準値を作成する初期基準値作成手段と、
前記重量測定手段により測定対象の重量測定を行う際に前記初期基準値を用いて測定する初期基準値適用手段とを備えた
重量測定装置。 - 前記初期基準値作成手段は、作成した初期基準値を前記記憶手段に記憶する構成であり、
前記初期基準値適用手段は、前記記憶手段に前記初期基準値が記憶されていれば該初期基準値を使用して測定対象の重量測定をする構成であり、
前記記憶手段に前記初期基準値が記憶されていない場合に前記初期値測定手段で測定した初期値を使用して測定対象の重量測定をする測定初期値適用手段を備えた
請求項1記載の重量測定装置。 - 前記初期基準値の更新の要否を判定する更新要否判定手段を備え、
該更新要否判定手段で更新必要と判定した場合、前記記憶手段に記憶した初期基準値を不使用にする初期基準値不使用化手段を備えた
請求項2記載の重量測定装置。 - 前記記憶手段は、毎回の重量測定後の前記重量測定手段の出力値を測定後値として記憶する構成とし、
前記更新要否判定手段は、重量測定開始前の初期値を測定し、該初期値と前記記憶手段から読み出した最新の前記測定後値とを比較して所定の変化があれば更新必要と判定し、そうでなければ更新不要と判定する構成である
請求項3記載の重量測定装置。 - 時間の経過を測定する計時手段を備え、
前記更新要否判定手段は、前記初期基準値作成手段による初期基準値の作成から所定時間が経過していれば更新必要と判定し、そうでなければ更新不要と判定する構成である
請求項3記載の重量測定装置。 - 前記更新要否判定手段は、測定対象の重量測定が行われていないときに前記重量測定手段の出力値に変動がある場合に更新必要と判定し、そうでなければ更新不要と判定する構成である
請求項3記載の重量測定装置。 - 移動や振動による加速度の変化を検出する加速度検出手段を備え、
前記更新要否判定手段は、前記加速度検出手段により加速度の変化を検出した場合に更新必要と判定し、そうでなければ更新不要と判定する構成である
請求項3記載の重量測定装置。 - 前記初期値測定手段で測定した初期値を使用して重量測定したか、前記記憶手段に記憶されている初期基準値を使用して重量測定したかを表示する表示手段を備えた
請求項2記載の重量測定装置。 - 重量測定手段を備えた重量測定装置により重力を測定する重量測定方法であって、
測定対象が乗っていない初期値の重量測定手段の測定を初期値測定手段により行い、
測定した初期値を記憶手段に複数記憶し、
該複数の初期値のばらつきが所定範囲内にある場合に初期基準値作成手段により初期基準値を作成し、
前記重量測定手段により重量測定を行う際に初期基準値適用手段により前記初期基準値を用いて測定する
重量測定方法。 - 前記初期基準値作成手段により、作成した初期基準値を前記記憶手段に記憶し、
前記初期基準値適用手段により、前記記憶手段に前記初期基準値が記憶されていれば該初期基準値を使用して重量測定をし、
前記記憶手段に前記初期基準値が記憶されていない場合に測定初期値適用手段により前記初期値測定手段で測定した初期値を使用して重量測定をする
請求項9記載の重量測定方法。 - 前記初期基準値の更新の要否を更新要否判定手段により判定し、
該更新要否判定手段で更新必要と判定した場合、初期基準値不使用化手段により前記記憶手段に記憶した初期基準値を不使用にする
請求項10記載の重量測定方法。 - 前記初期値測定手段で測定した初期値を使用して重量測定したか、前記記憶手段に記憶されている初期基準値を使用して重量測定したかを表示手段に表示する
請求項10記載の重量測定方法。
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- 2011-06-24 US US13/168,218 patent/US20110257538A1/en not_active Abandoned
- 2011-06-24 US US13/168,364 patent/US9377344B2/en active Active
- 2011-06-27 US US13/169,181 patent/US20110251501A1/en not_active Abandoned
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CN105243260A (zh) * | 2015-09-08 | 2016-01-13 | 深圳市双平泰科技有限公司 | 一种体征数据校正方法及其装置 |
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