CN205597918U - Human body component analyzer based on dual -frenquency bio -electrical impedance measures - Google Patents
Human body component analyzer based on dual -frenquency bio -electrical impedance measures Download PDFInfo
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- CN205597918U CN205597918U CN201620205549.9U CN201620205549U CN205597918U CN 205597918 U CN205597918 U CN 205597918U CN 201620205549 U CN201620205549 U CN 201620205549U CN 205597918 U CN205597918 U CN 205597918U
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Abstract
The utility model discloses a human body component analyzer based on dual -frenquency bio -electrical impedance measures, put the device including human carrying, still include main circuit board, measurement system and printer, main circuit board includes that main control singlechip system, dual -frenquency interchange constant current take place system, drive signal gating, measuring -signal gating, AD converter, data input, data display and voice broadcast, the dual -frenquency exchanges constant current emergence system and links to each other with the drive signal gating, measurement system's one end links to each other with the measuring -signal gating, and the other end links to each other with the AD converter, the dual -frenquency exchanges the constant current and takes place system, drive signal gating, measuring -signal gating, AD converter, data input, data display and voice broadcast and printer and all link to each other with the main control singlechip system, and main circuit board and printer are installed inside the device year is put to the human body. The problem of owing to cost an arm and a leg, operate inconvenient, shortcoming such as the influence is healthy, ordinary family is unable to be popularized is solved. This analysis appearance is with low costs, convenience, safety, no wound.
Description
Technical field
This utility model relates to measuring of human health field, particularly to a kind of bioelectrical impedance analysis instrument based on double frequency bio-electrical impedance measuring.
Background technology
In medical applications, human body component measures the measurement often paying close attention to body water content, in order to provide Operating Guideline for hemodialysis, edema therapeutic etc..Taking exercise with health care at human body, we often pay close attention to body muscle with the ratio of fat content to keep fit with well-balanced.
Human body component assay method currently mainly has the methods such as isotope-dilution analysis, Hydrostatic weighting method, Dual-energy X-ray, computed tomography, nuclear magnetic resonance, neutron activation analysis, but owing to there is expensive, operation inconvenience, affecting the shortcomings such as healthy, it is impossible to universal average family uses.
Utility model content
The purpose of this utility model is to provide a kind of timing single-chip microcomputer that uses, bifrequency and human body five sections impedance model, and employing bioelectrical impedance analysis is measured the analyser of human body component, both reduced cost, and improve certainty of measurement, convenient, safety, hurtless measure again.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of bioelectrical impedance analysis instrument based on double frequency bio-electrical impedance measuring, including human body mounting apparatus, also includes main circuit board, measurement system and printer;Described main circuit board includes that main control singlechip system, double frequency exchange constant current generation system, pumping signal gating, measurement signal gating, a/d converter, data input, data show and voice broadcast;Described double frequency exchange constant current generation system is connected with pumping signal gating;One end of described measurement system is connected with described measurement signal gating, and the other end is connected with described a/d converter;Described double frequency exchange constant current generation system, pumping signal gating, measurement signal gating, a/d converter, data input, data display voice broadcast are all connected with described main control singlechip system with printer;Described main circuit board and printer are installed in inside described human body mounting apparatus.
Further, described measurement system includes the first exciting electrode, the second exciting electrode, the 3rd exciting electrode, the 4th exciting electrode, and first measures electrode, the second measurement electrode, the 3rd measurement electrode, the 4th measurement electrode, height sensor and body weight sensor;Each exciting electrode described and a measurement electrode form one group of electrode, connect respectively at the left hand of human body, the right hand, left foot, right crus of diaphragm;Described exciting electrode is connected with described pumping signal gating;Described measurement electrode is connected with described measurement signal gating.
Further, described human body mounting apparatus includes base plate, described base plate is connected above support bar, described support bar is cuboid, described support bar is fixed with display device at 1m above described base plate, both sides are connected to first handle, second handle, described support bar side has print paper outlet, described support bar is connected above expansion link, described expansion link top is 2.2m to the ultimate range of described base plate, one support rail parallel with described base plate of described expansion link top linking.
Further, described first exciting electrode and first is measured electrode and is arranged on the top of described first handle, and described second exciting electrode and second is measured electrode and is arranged on the top of described second handle;Described 3rd exciting electrode and the 3rd measures electrode, and described 4th exciting electrode and the 4th is measured electrode and is arranged on described base plate;Described body weight sensor is installed in described base plate;Described height sensor is arranged on the end of described support rail and parallel with described base plate;Described main circuit board and printer are installed in inside described support bar.
Further, described display device includes a triangular prism and display screen, and described triangular prism is fixed on described support bar, and described display screen is installed on above described triangular prism.
Further, described double frequency exchange constant current generation system includes timing single-chip microcomputer, low pass filter and the constant current amplifier being connected in series;Described timing single-chip microcomputer is connected with described main control singlechip system, and described constant current amplifier is connected with described pumping signal gating;Described double frequency exchange constant current generation system produces the signal that frequency is 20KHz and 100KHz respectively.
In above-mentioned bioelectrical impedance analysis instrument, described data input, it is used for the id information of tested person, and age, sex etc. are manually entered in main control singlechip.Double frequency exchange constant current generation system includes timing single-chip microcomputer, low pass filter, constant current amplifier, and regularly single-chip microcomputer, low pass filter, constant current amplifier are connected in series;Regularly single-chip microcomputer is connected with main control singlechip system, constant current amplifier is connected with pumping signal gating, regularly single-chip microcomputer produces the square-wave signal being arranged frequency by main control singlechip, double frequency exchange constant current generation system, and produce that 2 frequencies are respectively 20KHz with 100KHz exchanges constant current small-signal.
In above-mentioned bioelectrical impedance analysis instrument, measurement system includes the first exciting electrode, the second exciting electrode, the 3rd exciting electrode, the 4th exciting electrode, the first measurement electrode, the second measurement electrode, the 3rd measurement electrode, the 4th measurement electrode, height sensor and body weight sensor;Each exciting electrode and another measurement electrode, as one group of electrode, are connected at the left hand of human body, the right hand, the left foot palm, the right crus of diaphragm palm;Exciting electrode is connected with pumping signal gating;Measure electrode and be connected with measuring signal gating.Measurement system calculates impedance value by measuring the ratio of the current value between interelectrode voltage difference and exciting electrode, measures the height of human body, body weight by height sensor, body weight sensor.Pumping signal gates by main control singlechip control, and 2 exciting electrodes of gating, transfer current to tested human body by the two electrode successively;Measurement signal gating is by main control singlechip control, and 2 exciting electrodes, height sensor, body weight sensor of gating, are transferred to a/d converter by measurement result successively;The data of input and the human impedance recorded are carried out calculating main human's component contents such as body-mass index BMI, human body water inventory TBW, waist-to-hipratio WHR, fat mass FM and non-fat amount FFM by main control singlechip, by output display with print bearing reaction to user.
The beneficial effects of the utility model:
This utility model passes through time-division method, and based on five sections human impedance models, the resistance value of each sections in the case of measurement 20KHz, 100KHz, compared to the accuracy using single-frequency measurement to substantially increase budget result;Producing the signal of certain frequency with single-chip microcomputer timing, compare use crystal oscillator and frequency dividing precision is high, than using, Direct Digital Synthesizer (DDS) cost is lower;The frequency of signal can be set flexibly, save the module such as crystal oscillator, frequency dividing, simple in construction;System reasonably takes the technology such as filtering, decoupling, constant current, improves the accuracy of surveyed impedance, makes prediction human body component more stable reliably.
Accompanying drawing explanation
Fig. 1: a kind of embodiment system structural representation of the present utility model;
Fig. 2: a kind of embodiment bioelectrical impedance analysis instrument structure chart of the present utility model;
Fig. 3: a kind of embodiment double frequency exchange constant current generation system circuit diagram of the present utility model;
Fig. 4: a kind of embodiment human body impedance modular concept figure of the present utility model;
Fig. 5: a kind of embodiment human body impedance measuring schematic diagram of the present utility model;
nullIn figure,1-the first exciting electrode、2-first measures electrode、3-the second exciting electrode、4-second measures electrode、5-the 3rd exciting electrode、6-the 3rd measures electrode、7-the 4th exciting electrode、8-the 4th measures electrode、9-base plate、10-main circuit board、11-support bar、12-expansion link、13-body weight sensor、14-height sensor、15-print paper exports、16-display screen、17-first handle、18-second handle、19-support rail、20-main control singlechip system、21-data input、22-pumping signal gates、23-measures signal gating、24-AD transducer、U3-timing single-chip microcomputer、U5-low pass filter、U4-constant current amplifier、Zra-right finesse is to the impedance between right shoulder、Zla-left finesse is to the impedance between left shoulder、Zrl-right ankle is to the impedance between right hip joint、Zll-left ankle is to the impedance between left hip joint、The impedance of Zt-trunk.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, as shown in Figure 1, present embodiment adopts the following technical scheme that a kind of bioelectrical impedance analysis instrument based on double frequency bio-electrical impedance measuring, including human body mounting apparatus, also include main circuit board 10, measurement system and printer;Described main circuit board 10 includes that main control singlechip system 20, double frequency exchange constant current generation system, pumping signal gating 22, measurement signal gating 23, a/d converter 24, data input 21, data show and voice broadcast;Described double frequency exchange constant current generation system is connected with pumping signal gating 22;One end of described measurement system is connected with described measurement signal gating 23, and the other end is connected with described a/d converter 24;Described double frequency exchange constant current generation system, pumping signal gating 22, measurement signal gating 23, a/d converter 24, data input 21, data display voice broadcast are all connected with described main control singlechip system 20 with printer;Described main circuit board 10 and printer are installed in inside described human body mounting apparatus.
Described measurement system includes first exciting electrode the 1, second exciting electrode the 3, the 3rd exciting electrode the 5, the 4th exciting electrode 7, first measures electrode 2, second measures electrode the 4, the 3rd measurement electrode the 6, the 4th measurement electrode 8, height sensor 14 and body weight sensor 13;Each exciting electrode described and a measurement electrode form one group of electrode, connect respectively at the left hand of human body, the right hand, left foot, right crus of diaphragm;Described exciting electrode is connected with described pumping signal gating 22;Described measurement electrode is connected with described measurement signal gating 23.
Described human body mounting apparatus includes base plate 9, described base plate is connected above support bar 11, described support bar 11 is cuboid, described support bar 11 is fixed with display device at 1m above described base plate 9, both sides are connected to first handle 17, second handle 18, described support bar 11 side has print paper outlet 15, described support bar 11 is connected above expansion link 12, described expansion link 11 top is 2.2m to the ultimate range of described base plate 9, one support rail 19 parallel with described base plate of described expansion link 11 top linking.
Described first exciting electrode 1 and the first measurement electrode 2 are arranged on the top of described first handle 17, and described second exciting electrode 3 and the second measurement electrode 4 are arranged on the top of described second handle 18;Described 3rd exciting electrode 5 and the 3rd measures electrode 6, and described 4th exciting electrode 7 and the 4th measurement electrode 8 are arranged on described base plate 9;Described body weight sensor 13 is installed in described base plate 9;Described height sensor 14 is arranged on the end of described support rail 19 and parallel with described base plate 9;It is internal that described main circuit board 10 and printer are installed in described support bar 11.
Described display device includes a triangular prism and display screen 16, and described triangular prism is fixed on described support bar 11, and described display screen 16 is installed on above described triangular prism.
Described double frequency exchange constant current generation system includes timing single-chip microcomputer u3, low pass filter u5 and constant current amplifier u4 being connected in series;Described timing single-chip microcomputer u3 is connected with described main control singlechip system 20, and described constant current amplifier u4 is connected with described pumping signal gating 22;Described double frequency exchange constant current generation system produces the signal that frequency is 20KHz and 100KHz respectively.
The bioelectrical impedance analysis instrument of present embodiment is carried out isolated from power, control signal isolation, data isolation, it is ensured that instrument uses safety.
As in figure 2 it is shown, the human body mounting apparatus of present embodiment includes base plate 9, connecting pin is measured electrode the 6, the 4th exciting electrode the 7, the 4th with the 3rd exciting electrode the 5, the 3rd of, sole and is measured electrode 8 and be arranged on base plate 9, and base plate 9 is internal is equipped with body weight sensor 13;Base plate is connected above being shaped as the support bar 11 of cuboid, the internally installed main circuit board of support bar 11 10, printer, and main circuit board 10 is internally integrated the module such as main control singlechip and a/d converter 24;Support bar 11 upper end, above base plate at 1m, fixes the device of a triangular prism-shaped, and its that face upwards is man-machine interactive display 16, can be used to input data and display result.Near man-machine interaction display screen 16,2 sides of support bar 11 are connected to first handle 17, second handle 18, and the top of handle is to connect thumb, the electrode of palm, holds handle, stretch out thumb during measurement;Having print paper outlet 15 in the side of support bar 11, be connected above expansion link 12 at support bar 11, for ensureing to be applicable to vast majority of people, the ultimate range on expansion link 12 top to base plate 9 is 2.2 meters.One support rail 19 parallel with base plate 9 of expansion link 12 top linking, at the fixing height sensor 14 parallel with base plate 9 of support rail 19 other end, height sensor 14 is used for measuring Human Height, to when measuring height, height sensor 14 first measure above itself and base plate 9 between distance, measure again its to number of people apex distance from, subtract each other the height of i.e. tested person.
As it is shown on figure 3, double frequency exchange constant current generation system includes timing single-chip microcomputer u3, low pass filter u5, constant current amplifier u4.
2 control signals are exported while regularly single-chip microcomputer u3 produces simple signal, control 1 multidiameter option switch, by this multidiameter option switch, select to connect by low pass filter independent with two for the output waveform of timing single-chip microcomputer u3, selecting the output of two low pass filter u5 with constant-current source to connect as input, what constant-current source exported is exactly the constant current ac small signal of setpoint frequency again.
As shown in Figure 4, human body impedance is regarded as the impedance of 5 sections, right finesse represents to the impedance device Zra between right shoulder, left finesse represents to the impedance Zla between left shoulder, right ankle represents to the impedance Zrl between right hip joint, left ankle represents to the impedance Zll between left hip joint, and the impedance Zt of trunk represents.First exciting electrode the 1, second exciting electrode the 3, the 3rd exciting electrode the 5, the 4th exciting electrode 7 is connected at palm, sole, and first measures electrode the 2, second measurement electrode the 4, the 3rd measurement electrode the 6, the 4th measurement electrode 8 is connected at thumb, toe.Being passed through exciting current between the first exciting electrode the 1, the 3rd exciting electrode 5, first measures electrode 2, second measures the voltage between electrode 4, and the ratio of voltage x current is impedance, in like manner can record the value of each impedance.
As shown in Figure 5, excitation gating signal controls to be divided into the first exciting electrode the 1, the 4th exciting electrode 7 at gating, two groups of exciting electrodes of the second exciting electrode the 3, the 3rd exciting electrode 5 respectively select a pairing gating, sends faint AC signal, and human body different segment resistance forms path;Measure gating signal can control to measure at 4 electrode arbitrarily to select 2 measure electrode pair gating, measure that interelectrode AC signal is rectified, magnitude of voltage can be recorded after filtering, be exactly impedance with the ratio of electric current for 2.When measuring gating signal gating height or body weight sensor, directly institute's measured value is sent to main control singlechip system 20 after a/d converter 24;When measuring gating signal gating and measuring electrode, encourage, measure the various combination of electrode can record human body different segment or the resistance value combined between them.Excitation gating signal, measurement gating signal are controlled by main control singlechip, are measured by time-multiplexed mode and send the result to main control singlechip.
Although describing detailed description of the invention of the present utility model above in association with accompanying drawing, but those of ordinary skill in the art are to be understood that, these are merely illustrative of, and these embodiments can be made various deformation or amendment, without departing from principle of the present utility model and essence.Scope of the present utility model is only limited by the claims that follow.
Claims (6)
1. a bioelectrical impedance analysis instrument based on double frequency bio-electrical impedance measuring, including human body mounting apparatus, it is characterised in that: also include main circuit board, measurement system and printer;Described main circuit board includes that main control singlechip system, double frequency exchange constant current generation system, pumping signal gating, measurement signal gating, a/d converter, data input, data show and voice broadcast;Described double frequency exchange constant current generation system is connected with pumping signal gating;One end of described measurement system is connected with described measurement signal gating, and the other end is connected with described a/d converter;Described double frequency exchange constant current generation system, pumping signal gating, measurement signal gating, a/d converter, data input, data display voice broadcast are all connected with described main control singlechip system with printer;Described main circuit board and printer are installed in inside described human body mounting apparatus.
2. bioelectrical impedance analysis instrument based on double frequency bio-electrical impedance measuring as claimed in claim 1, it is characterized in that: described measurement system includes the first exciting electrode, the second exciting electrode, the 3rd exciting electrode, the 4th exciting electrode, first measures electrode, the second measurement electrode, the 3rd measurement electrode, the 4th measurement electrode, height sensor and body weight sensor;Each exciting electrode described and a measurement electrode form one group of electrode, connect respectively at the left hand of human body, the right hand, left foot, right crus of diaphragm;Described exciting electrode is connected with described pumping signal gating;Described measurement electrode is connected with described measurement signal gating.
3. bioelectrical impedance analysis instrument based on double frequency bio-electrical impedance measuring as claimed in claim 2, it is characterized in that: described human body mounting apparatus includes base plate, described base plate is connected above support bar, described support bar is cuboid, described support bar is fixed with display device at 1m above described base plate, both sides are connected to first handle, second handle, described support bar side has print paper outlet, described support bar is connected above expansion link, described expansion link top is 2.2m to the ultimate range of described base plate, one support rail parallel with described base plate of described expansion link top linking.
4. bioelectrical impedance analysis instrument based on double frequency bio-electrical impedance measuring as claimed in claim 3, it is characterized in that: described first exciting electrode and first is measured electrode and is arranged on the top of described first handle, described second exciting electrode and second is measured electrode and is arranged on the top of described second handle;Described 3rd exciting electrode and the 3rd measures electrode, and described 4th exciting electrode and the 4th is measured electrode and is arranged on described base plate;Described body weight sensor is installed in described base plate;Described height sensor is arranged on the end of described support rail and parallel with described base plate;Described main circuit board and printer are installed in inside described support bar.
5. bioelectrical impedance analysis instrument based on double frequency bio-electrical impedance measuring as claimed in claim 3, it is characterized in that: described display device includes a triangular prism and display screen, described triangular prism is fixed on described support bar, and described display screen is installed on above described triangular prism.
6. bioelectrical impedance analysis instrument based on double frequency bio-electrical impedance measuring as claimed in claim 1, it is characterised in that: described double frequency exchange constant current generation system includes timing single-chip microcomputer, low pass filter and the constant current amplifier being connected in series;Described timing single-chip microcomputer is connected with described main control singlechip system, and described constant current amplifier is connected with described pumping signal gating;Described double frequency exchange constant current generation system produces the signal that frequency is 20KHz and 100KHz respectively.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109497967A (en) * | 2019-01-04 | 2019-03-22 | 济南汇医融工科技有限公司 | A kind of human body component, stress and artery sclerosis sync detection device |
WO2022204833A1 (en) * | 2021-03-27 | 2022-10-06 | Huawei Technologies Co., Ltd. | Weighing scale for monitoring biometric data of user |
WO2022237377A1 (en) * | 2021-05-14 | 2022-11-17 | 华为技术有限公司 | Method and system for measuring physiological parameters, and electronic device |
WO2023134383A1 (en) * | 2022-01-12 | 2023-07-20 | 华为技术有限公司 | System for detecting artery disease of lower extremity, and terminal device |
-
2016
- 2016-03-17 CN CN201620205549.9U patent/CN205597918U/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109497967A (en) * | 2019-01-04 | 2019-03-22 | 济南汇医融工科技有限公司 | A kind of human body component, stress and artery sclerosis sync detection device |
WO2022204833A1 (en) * | 2021-03-27 | 2022-10-06 | Huawei Technologies Co., Ltd. | Weighing scale for monitoring biometric data of user |
WO2022237377A1 (en) * | 2021-05-14 | 2022-11-17 | 华为技术有限公司 | Method and system for measuring physiological parameters, and electronic device |
WO2023134383A1 (en) * | 2022-01-12 | 2023-07-20 | 华为技术有限公司 | System for detecting artery disease of lower extremity, and terminal device |
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