CN107242871A - Automatic discrimination four, the method for eight electrodes in a kind of human body impedance measuring - Google Patents
Automatic discrimination four, the method for eight electrodes in a kind of human body impedance measuring Download PDFInfo
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- CN107242871A CN107242871A CN201710504216.5A CN201710504216A CN107242871A CN 107242871 A CN107242871 A CN 107242871A CN 201710504216 A CN201710504216 A CN 201710504216A CN 107242871 A CN107242871 A CN 107242871A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/053—Measuring electrical impedance or conductance of a portion of the body
- A61B5/0537—Measuring body composition by impedance, e.g. tissue hydration or fat content
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7271—Specific aspects of physiological measurement analysis
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Abstract
The invention discloses a kind of method of automatic discrimination four, eight electrodes in human body impedance measuring, this method by measuring the bio-electrical impedance between two hands, bipod respectively, so as to whether making accurate judgement using eight electrode measurements or four-probe measurement, it is possible to be switched in corresponding pattern.The present invention is by using cross-drive multi-electrode measuring method, and quick judgement measurement is carried out to testee to multistage position direct measurement mode, judge that testee carried out at present is eight electrode measurements or four-probe measurement, and is switched in corresponding measurement pattern.Thus, it is possible to make an eight electrode body fat instrument can also compatible four-probe measurement, and automated intelligent judges, is brought convenience to measured, while bringing more products to select to manufacturing enterprise.
Description
Technical field
The invention belongs to human biological electricity impedance measurement technique field, in more particularly to a kind of human body balance human body impedance measuring
The method of discrimination of four electrodes and eight electrodes.
Background technology
With the popularization and application of BIA (bio-electrical impedance) technology, obtain human body composition parameter to detect human body by BIA
The product of health status is also more and more and more and more perfect, gather impedance information mode also by 2 electrodes evolve to 4 electrodes and
8 electrodes, exciting current also increases to multifrequency piecewise analysis from single-frequency, and the parameter of detection is also increasingly enriched, can not only examined
Impedance value is measured, and then calculates the various human body compositions of acquisition and provides more accurate more useful reference to healthy living, it is strong to human body
Health monitoring provides more one layer of support and guarantee.Mainly four electrodes, eight electrodes, two kinds of measurement sides are used in current technology
Formula.Wherein four-probe measurement is convenient, succinctly, but because collection position is limited, the data of measurement are less.Eight electrode measurements are relatively multiple
It is miscellaneous, but accurate data can carry out precise information measurement to each section of human body.
All it is four single electrode body fat instrument in existing technology, in human body balance.Such as need accurately to measure section body number
According to must buy eight electrode body fat instrument, but eight electrode body fat instrument can not all be tested by four electrode body fat instrument.In actual measurement
In the case of, testee is more desirable to can have a body fat instrument that be able to can be measured with four, eight electrodes, and can be according to testee institute
The electrode automatic discrimination of contact is distinguished and is switched in corresponding four, eight electrode measurement modes.Former technology can be greatly improved and used
Cost, is also used highly inconvenient.
Such as patent application 201610597869.8 discloses a kind of body impedance measurement devices and its bioelectrical impedance analysis instrument,
It is related to human body component detection technique field, body impedance measurement devices therein include：Detecting electrode unit, measuring circuit list
Member, analog switch unit and signal gathering unit；Detecting electrode unit is connected with measuring circuit unit, and measuring circuit unit passes through
Analog switch unit is connected with signal gathering unit：Detecting electrode unit and human contact, for exporting detection electric current, measurement electricity
Operational amplifier is provided with the unit of road, for being amplified processing to detection electric current.The body impedance measurement devices of the present invention
And its bioelectrical impedance analysis instrument, processing can be amplified to detection electric current using operational amplifier, useful signal can be amplified,
Operational amplifier possesses high input impedance and low output impedance, and on can overcoming when carrying out the impedance detection of trunk
The influence of limb and lower limb so that measurement result is more accurate, can obtain more accurate biological component data.However, should
Mode is still using four single electrodes or eight electrode body fat instrument, it is impossible to realize switching between the body fat instrument of many structure types, no
Beneficial to the use of people.
In a word, due to the bio-electrical impedance weak output signal of measurement human body, the interference signal such as polarizing voltage on electrode slice
Influence all can the data that arrive of interference acquisition, existing body fat instrument is all to be fixed as four-probe measurement pattern or eight electrode measurement moulds
Formula, some people carry out the measurement of four electrodes of simplicity when probably understanding body composition using eight electrodes, and some people then think
The measurement of accurate eight electrode is carried out when understanding body composition in detail using eight electrodes, is measured according to current measurement pattern
Testee has limited to the use regulation of testee, it is impossible to distinguishes the occupation mode of people, is made troubles to testee.
The content of the invention
Based on this, therefore the present invention primary mesh be to provide automatic discrimination four in a kind of human body impedance measuring, eight electrodes
Method, this method uses cross-drive multi-electrode measuring method, and multistage position direct measurement mode entered to testee
Row is quick to judge measurement, and judge that testee carried out at present is eight electrode measurements or four-probe measurement, and is switched to phase
In the measurement pattern answered.
It is to provide automatic discrimination four in a kind of human body impedance measuring, the method for eight electrodes another mesh of the present invention,
This method make an eight electrode body fat instrument can also compatible four-probe measurement, and automated intelligent judges, is brought convenience to measured,
And do not increase extra-pay, and simplicity is realized, it is with low cost.
It has been investigated that：Four electrode body fat instrument are to measure human body impedance simultaneously by measuring four electrodes between both feet mostly
Analysis general physical composition is calculated, eight electrode body fat instrument are come accurate segmentation measurement people by eight electrodes of both feet and both hands
Each section impedance of body simultaneously calculates analysis general physical composition.When testee merely desires to simply carry out four-probe measurement, it is only necessary to red
Feet station stands in four electrodes of both feet, and by automatic decision, it is four-probe measurement to body fat instrument, and is switched to respective measurement mode.When
When testee thinks accurately to carry out eight electrode measurements, both hands have been contacted to four electrodes of both hands, and stood barefoot the four of both feet
By automatic decision, it is eight electrode measurements to body fat instrument when on individual electrode, and is switched to respective measurement mode.
Therefore, to achieve the above object, the technical scheme is that：
Automatic discrimination four, the method for eight electrodes in a kind of human body impedance measuring, this method comprise the following steps：
101st, the bio-electrical impedance between measurement bipod；
Specifically, include：
1011st, excitation bio-electrical impedance BZ12 between left foot to right crus of diaphragm, measurement bipod；
1012nd, excitation bio-electrical impedance BZ21 between right crus of diaphragm to left foot, measurement bipod；
102nd, judge electrical impedance between bipod whether between normal human's both feet in impedance ranges；Judge double-legged stance just
Really, it is normal with electrode contact；
Further comprise：
1021st, judge two electrical impedance of BZ12 and BZ21 whether between normal human's both feet in impedance ranges.
1022nd, the absolute value of two electrical impedance differences of BZ12 and BZ21 is judged, if the absolute value of difference is in normality threshold W
It is interior, judge that double-legged stance is correct, it is normal with electrode contact.
103rd, the bio-electrical impedance between two hands of measurement；
Specifically, include：
1031st, excitation bio-electrical impedance BZ34 between left hand to the right hand, two hands of measurement；
1032nd, judge BZ34 impedances whether between normal human's both hands in impedance ranges；
1033rd, judge BZ33, BZ44 impedance whether between normal single leg impedance ranges.
104th, excitation measures bio-electrical impedance BZ33 between now bipod by left foot to left hand；
105th, judge BZ33 impedances whether between the single leg of normal human in impedance ranges.
106th, excitation measures bio-electrical impedance BZ44 between now bipod by right crus of diaphragm to the right hand；
107th, judge BZ44 impedances whether between the single leg of normal human in impedance ranges.
If the 108, conditions above is all met, it is determined as eight electrode mode measurements and switches over, otherwise it is assumed that is four electricity
Pole measurement pattern is simultaneously switched over.
Automatic discrimination four, the method for eight electrodes in the human body impedance measuring that the present invention is realized, by using cross-drive
Multi-electrode measuring method, and quick judgement measurement is carried out to testee to multistage position direct measurement mode, judge testee
What is carried out at present is eight electrode measurements or four-probe measurement, and is switched in corresponding measurement pattern.Thus, it is possible to make
One eight electrode body fat instrument can also compatible four-probe measurement, and automated intelligent judges.Brought convenience to measured.
This mode only needs eight electrode body fat instrument that two kinds of functions of four-probe measurement and eight electrode measurements can be achieved simultaneously, real
Existing simplicity, is also offered convenience to manufacturing enterprise, is easy to reduce cost of manufacture, and test pattern is artificially set without extra.
Brief description of the drawings
Fig. 1 is the schematic diagram that prior art realizes four-probe measurement.
Fig. 2 is the schematic diagram that prior art realizes eight electrode measurements.
Fig. 3 is the flow chart that the present invention implements human body impedance measuring.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to shown in accompanying drawing 1, being that prior art is also four-probe measurement pattern of the present invention.Referring to the institute of accompanying drawing 2
Show, be that prior art is also eight electrode mode measurement of the present invention.
The measuring method flow chart that the present invention is realized is shown in Figure 3.First current excitation electrode is from " left foot electrode slice "
Output, from " right crus of diaphragm electrode slice " input, then measures the magnitude of voltage that " left foot " is arrived between " right crus of diaphragm ", calculates the resistance between two electrodes
Anti- value BZ12.Exchanging electric current is encouraged and voltage measurement electrodes again, and current excitation is exported from " right crus of diaphragm electrode slice ", from " left foot electrode
Piece " is inputted, and is then measured the magnitude of voltage that " left foot " is arrived between " right crus of diaphragm ", is calculated the impedance value BZ21 between two electrodes.Such as BZ12
It is absolute beyond normal range (NR) impedance value (200 ohm -1.5K ohm) or BZ12 and BZ21 difference with any impedance values of BZ21
Value is that can determine whether stance mistake or be not in contact with the electrode of lower limb four beyond threshold value BZY.Human body impedance survey can now be exited
Amount pattern and prompting user's lower limb four-probe measurement exception that reports an error.
If lower limb four-probe measurement is normal, it is possible to carry out eight electrode measurement differentiations.First current excitation electrode is from " left hand
Electrode slice " is exported, and from " right hand electrode slice " input, is then measured the magnitude of voltage that " left hand " is arrived between " right hand ", is calculated two electrodes
Between impedance value BZ34, judge BZ34 impedances whether between normal single leg impedance ranges, such as BZ34 impedance values exceed normal model
Enclose impedance value (250 ohm -1.5K ohm) and be believed that both hands electrode is not in contact with, and exits eight electrode mode measurements, return to four
Electrode mode measurement.
If BZ34 impedances are normal, it is possible to proceed the differentiation of the electrode measurement of next step eight.First current excitation electrode from
" left foot electrode slice " is exported, and from " left hand electrodes piece " input, is then measured the magnitude of voltage that " left foot " is arrived between " right crus of diaphragm ", is calculated two
Impedance value BZ33 between electrode, judge BZ33 impedances whether between normal single leg impedance ranges, such as BZ33 impedance values are beyond just
Normal scope impedance value (100 ohm -500K ohm) is it is believed that left hand electrodes are not in contact with, you can remind user to hold good hand's handle
Or eight electrode mode measurements are exited, return to four-probe measurement pattern.
If BZ33 impedances are normal, it is possible to proceed the differentiation of the electrode measurement of next step eight.First current excitation electrode from
" right crus of diaphragm electrode slice " is exported, and from " right hand electrode slice " input, is then measured the magnitude of voltage that " right crus of diaphragm " is arrived between " left foot ", is calculated two
Impedance value BZ44 between electrode, judge BZ44 impedances whether between normal single leg impedance ranges, such as BZ44 impedance values are beyond just
Normal scope impedance value (100 ohm -500 ohm) is it is believed that right hand electrode is not in contact with, you can remind user to hold good hand's handle
Or eight electrode mode measurements are exited, return to four-probe measurement pattern.
If above-mentioned condition all meets normal condition, both it is believed that testee's progress is eight electrode mode measurements.Respectively
Measurement data in the case of kind, its tables of data is referring to subordinate list 1.
In a word, automatic discrimination four, the method for eight electrodes in the human body impedance measuring that the present invention is realized, by using intersection
Drive multi-electrode measuring method, and multistage position direct measurement mode is carried out to testee it is quick judge to measure, judge by
What survey person was carried out at present is eight electrode measurements or four-probe measurement, and is switched in corresponding measurement pattern.Thus, may be used
So that eight electrode body fat instrument can also compatible four-probe measurement, and automated intelligent judges.Brought convenience to measured.
This mode only needs eight electrode body fat instrument that two kinds of functions of four-probe measurement and eight electrode measurements can be achieved simultaneously, real
Existing simplicity, is also offered convenience to manufacturing enterprise, is easy to reduce cost of manufacture, and test pattern is artificially set without extra.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. automatic discrimination four, the method for eight electrodes in a kind of human body impedance measuring, it is characterised in that this method comprises the following steps：
101st, the bio-electrical impedance between measurement bipod；
102nd, judge electrical impedance between bipod whether between normal human's both feet in impedance ranges；Judge that double-legged stance is correct,
It is normal with electrode contact；
103rd, the bio-electrical impedance between two hands of measurement；
104th, excitation measures bio-electrical impedance BZ33 between now bipod by left foot to left hand；
105th, judge BZ33 impedances whether between the single leg of normal human in impedance ranges；
106th, excitation measures bio-electrical impedance BZ44 between now bipod by right crus of diaphragm to the right hand；
107th, judge BZ44 impedances whether between the single leg of normal human in impedance ranges.；
If the 108, conditions above is all met, it is determined as eight electrode mode measurements and switches over, otherwise it is assumed that is that four electrodes are surveyed
Amount pattern is simultaneously switched over.
2. automatic discrimination four, the method for eight electrodes in human body impedance measuring as claimed in claim 1, it is characterised in that the step
During rapid 101 is total, include：
1011st, excitation bio-electrical impedance BZ12 between left foot to right crus of diaphragm, measurement bipod；
1012nd, excitation bio-electrical impedance BZ21 between right crus of diaphragm to left foot, measurement bipod.
3. automatic discrimination four, the method for eight electrodes in human body impedance measuring as claimed in claim 2, it is characterised in that the step
In rapid 102, further comprise：
1021st, judge two electrical impedance of BZ12 and BZ21 whether between normal human's both feet in impedance ranges.
1022nd, the absolute value of two electrical impedance differences of BZ12 and BZ21 is judged, if the absolute value of difference is sentenced in normality threshold W
Disconnected both feet stance is correct, normal with electrode contact.
4. automatic discrimination four, the method for eight electrodes in human body impedance measuring as claimed in claim 3, it is characterised in that the step
In rapid 103, include：
1031st, excitation bio-electrical impedance BZ34 between left hand to the right hand, two hands of measurement；
1032nd, judge BZ34 impedances whether between normal human's both hands in impedance ranges.
1033rd, judge BZ33, BZ44 impedance whether between normal single leg impedance ranges.
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Cited By (7)
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| CN108652622A (en) * | 2018-03-13 | 2018-10-16 | 广东乐心医疗电子股份有限公司 | Method and system for automatically detecting human body components |
| CN109350056A (en) * | 2018-12-04 | 2019-02-19 | 芯海科技（深圳）股份有限公司 | Mobile terminal for bodily fat measurement and the body fat measuring method based on the terminal |
| CN110974224A (en) * | 2019-11-21 | 2020-04-10 | 芯海科技（深圳）股份有限公司 | Human body composition parameter measuring method and device, electronic equipment and storage medium |
| CN113456050A (en) * | 2021-07-23 | 2021-10-01 | 芯海科技（深圳）股份有限公司 | Human body impedance measuring device and human body impedance measuring method |
| CN113679370A (en) * | 2020-05-19 | 2021-11-23 | 华为技术有限公司 | Body composition detection method, body composition detection equipment and computer-readable storage medium |
| CN113796848A (en) * | 2020-05-29 | 2021-12-17 | 芯海科技（深圳）股份有限公司 | Human body impedance measuring method, device and computer readable storage medium |
| RU2807533C1 (en) * | 2020-05-19 | 2023-11-16 | Хуавэй Текнолоджиз Ко., Лтд. | Method and device for determining body composition and computer readable data medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109350056A (en) * | 2018-12-04 | 2019-02-19 | 芯海科技（深圳）股份有限公司 | Mobile terminal for bodily fat measurement and the body fat measuring method based on the terminal |
| CN110974224A (en) * | 2019-11-21 | 2020-04-10 | 芯海科技（深圳）股份有限公司 | Human body composition parameter measuring method and device, electronic equipment and storage medium |
| CN113679370A (en) * | 2020-05-19 | 2021-11-23 | 华为技术有限公司 | Body composition detection method, body composition detection equipment and computer-readable storage medium |
| WO2021233011A1 (en) * | 2020-05-19 | 2021-11-25 | 华为技术有限公司 | Body composition test method and device, and computer readable storage medium |
| RU2807533C1 (en) * | 2020-05-19 | 2023-11-16 | Хуавэй Текнолоджиз Ко., Лтд. | Method and device for determining body composition and computer readable data medium |
| CN113679370B (en) * | 2020-05-19 | 2024-05-17 | 华为技术有限公司 | Method, device and computer readable storage medium for detecting body composition |
| CN113796848A (en) * | 2020-05-29 | 2021-12-17 | 芯海科技（深圳）股份有限公司 | Human body impedance measuring method, device and computer readable storage medium |
| CN113796848B (en) * | 2020-05-29 | 2024-02-06 | 芯海科技（深圳）股份有限公司 | Human body impedance measurement method, device and computer readable storage medium |
| CN113456050A (en) * | 2021-07-23 | 2021-10-01 | 芯海科技（深圳）股份有限公司 | Human body impedance measuring device and human body impedance measuring method |
| CN113456050B (en) * | 2021-07-23 | 2023-12-19 | 芯海科技（深圳）股份有限公司 | Human body impedance measuring device and human body impedance measuring method |
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