CN102920454A

CN102920454A - Human impedance measuring method, device and equipment

Info

Publication number: CN102920454A
Application number: CN2012102151740A
Authority: CN
Inventors: 王萍; 李利明
Original assignee: BEIJING SHHC TECHNOLOGY Co Ltd
Current assignee: BEIJING SHHC TECHNOLOGY Co Ltd
Priority date: 2012-06-26
Filing date: 2012-06-26
Publication date: 2013-02-13
Anticipated expiration: 2032-06-26
Also published as: CN102920454B

Abstract

The invention provides a human impedance measuring method, a human impedance measuring device and human impedance measuring equipment. The method comprises the following steps of: obtaining a first measuring current value and a first measuring voltage value on a first measuring position of a trunk of a human body and a second measuring current value and a second measuring voltage value on a second measuring position of the trunk by a first non-fixed electrode pair; obtaining a third measuring current value and a third measuring voltage value on a third measuring position of the trunk and a fourth measuring current value and a fourth measuring voltage value on a fourth measuring position of the trunk by a second non-fixed electrode pair, wherein the first, second, third and fourth measuring current values are all equal to a current valve; and according to the first, second, third and fourth measuring current values and voltage values, obtaining a first impedance value between the first and second measuring positions, a second impedance value between the first and third measuring positions, a third impedance value between the second and fourth measuring positions and a fourth impedance value between the third and fourth measuring positions. The scheme of the invention can improve the measurement accuracy of human impedances.

Description

A kind of technique of segmental bioelectrical impedance, device and equipment

Technical field

Biological impedance technical field of the present invention refers to a kind of technique of segmental bioelectrical impedance, device and equipment especially.

Background technology

Bio-electrical impedance bioelectrical impedance analysis (Bioelectrical Impedance Analysis, BIA) being a measuring body composition technology that grows up nearly decades, is a kind of electrical characteristics of utilizing biological tissue's organ and Changing Pattern extraction thereof and the detection technique of Human Physiology, biomedical information that pathological condition is relevant.It is according to human fatty tissue (FM) and the different electrical impedance characteristics of non-fat tissue (FFM), send into a small AC measurment electric current by means of the electrode that is placed on body surface to tested human body, extract human body impedance information from detecting electrode, carry out the mensuration of tissue ingredient of human body tissue ingredient.BIA whole body measurement method the earliest is approximately one section cylinder with human body and measures, because the contribution of extremity part is very large in the BIA whole body method measurement result, covered the torso portion useful information, and in measuring body composition, the composition information of torso portion is often even more important, have more clinical value, so on the basis of whole body measurement method, develop, formed segment impedance measuring method (SBIA).SBIA is divided into five sections with human body, i.e. left upper extremity, left lower extremity, right upper extremity, right lower extremity and trunk are so be also referred to as five sections methods.Five sections methods have considered that the upper and lower limb of human body, trunk are because volume is different with shape, difference on the impedance measurements impact, can measure preferably the trunk composition, solve to a certain extent that whole body impedance method model is coarse, data are disperseed, ignored the defectives such as material impact of torso portion impedance to human body component.

BIA compares with the whole body method, existing BIA method of fractionation has been considered the different impacts on impedance measurements of human limb and trunk volume and shape, has solved to a certain extent that whole body electrical impedance measuring body composition method model is coarse, the impedance of ignoring torso portion is to defectives such as the material impact of human body component and data dispersions.But still there are the following problems:

Existing BIA method of fractionation is considered as a volume conductor with the torso portion of human body, thinks that the interior Fat Distribution of whole trunk is uniform.But clinically, abdominal obesity divides subcutaneous fat accumulation type (being called for short subcutaneous obese type) and interior fat accumulation type (being called for short the internal organs obese type) two large classes.Subcutaneous fat accumulation type characteristics are that main the concentrating of fat is distributed in abdominal part, buttocks and the huckle subcutaneous tissue; The internal organs obese type then is the main peritoneum (comprising omentum majus, omentum minus, mesentery) of concentrating in the distribution abdominal cavity of fat.Internal organs obese type overweight people blood cholesterol obviously raises, and after taking glucose, the speed that blood glucose descends is slower than the normal person significantly.This type overweight people more easily suffers from hypertension, arteriosclerosis and diabetes.Therefore, measure overweight people's Fat Distribution situation, more can reflect fat harm.Usually male's fattiness concentrates on abdominal part, and the women then focuses mostly on subcutaneous.Ratio such as stomach fat is large, then easily suffers from and states disease.So no matter be that subcutaneous fat accumulation type or interior fat accumulation type are fat, its a large amount of athero all is lower torso (being abdominal part, buttocks and thigh).Therefore, in the bioelectrical impedance analysis, the importance that can distinguish the fat content of breast, abdominal part is apparent.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of technique of segmental bioelectrical impedance, device and equipment, can obtain the impedance of trunk segmentation part, improves the accuracy to the testing result of human body impedance.

For solving the problems of the technologies described above, embodiments of the invention provide a kind of technique of segmental bioelectrical impedance, comprising:

Obtain the first measurement current value and the first measuring voltage value that the first on-fixed electrode pair obtains in the first measuring point of the trunk of human body, and the second measurement current value and the second measuring voltage value that obtains in the second measuring point of described trunk;

Obtain the 3rd measurement current value and the 3rd measuring voltage value that the second on-fixed electrode pair obtains in the 3rd measuring point of described trunk, and the 4th measurement current value and the 4th measuring voltage value that obtains in the 4th measuring point of described trunk; Wherein, described the first measurement current value, described second is measured current value, described the 3rd measurement current value and the described the 4th is measured current value and is equal to a current value;

According to described the first measuring voltage value, described the second measuring voltage value, described the 3rd measuring voltage value, described the 4th measuring voltage value and described current value, obtain the 3rd resistance value between the second resistance value between the first resistance value between described the first measuring point and described the second measuring point, described the first measuring point and described the 3rd measuring point, described the second measuring point and described the 4th measuring point and the 4th resistance value between described the 3rd measuring point and described the 4th measuring point.

Embodiments of the invention also provide a kind of body impedance measurement devices, comprising: the impedance of the trunk of human body obtains module, and wherein, the impedance of described trunk obtains module and comprises:

First obtains the unit, is used for obtaining the first measurement current value and the first measuring voltage value that the first on-fixed electrode pair obtains in the first measuring point of the trunk of human body;

Second obtains the unit, is used for obtaining the second measurement current value and the second measuring voltage value that described the first on-fixed electrode pair obtains in the second measuring point of described trunk;

The 3rd obtains the unit, is used for obtaining the 3rd measurement current value and the 3rd measuring voltage value that the second on-fixed electrode pair obtains in the 3rd measuring point of described trunk;

The 4th obtains the unit, is used for obtaining the 4th measurement current value and the 4th measuring voltage value that described the second on-fixed electrode pair obtains in the 4th measuring point of described trunk; Wherein, described the first measurement current value, described second is measured current value, described the 3rd measurement current value and the described the 4th is measured current value and is equal to a current value;

The 5th obtains the unit, be used for according to described the first measuring voltage value, described the second measuring voltage value, described the 3rd measuring voltage value, described the 4th measuring voltage value and described current value, obtain the 3rd resistance value between the second resistance value between the first resistance value between described the first measuring point and described the second measuring point, described the first measuring point and described the 3rd measuring point, described the second measuring point and described the 4th measuring point and the 4th resistance value between described the 3rd measuring point and described the 4th measuring point.

Embodiments of the invention also provide a kind of human body impedance measuring equipment, comprising:

Processor, at least two on-fixed electrode pairs that are connected with described processor, the first fixed electrode to, the second fixed electrode to, the 3rd fixed electrode to and the 4th fixed electrode pair; Wherein, described processor comprises aforesaid body impedance measurement devices.

The beneficial effect of technique scheme of the present invention is as follows:

In the such scheme, record current value and the magnitude of voltage of the corresponding measuring point of trunk by the on-fixed electrode, and according to these current values and magnitude of voltage, obtain the impedance between the corresponding measuring point, thereby realized to obtain the impedance of trunk segmentation part, improved the accuracy to the testing result of human body impedance.

Description of drawings

Fig. 1 is technique of segmental bioelectrical impedance schematic flow sheet of the present invention;

Human body impedance schematic equivalent circuit when Fig. 2 is human body impedance measuring of the present invention;

Fig. 3 is the structural frames schematic diagram of human body impedance measuring equipment of the present invention;

Fig. 4 is a specific embodiment structure chart of human body impedance measuring equipment of the present invention;

Fig. 5 is a specific embodiment structure chart of human body impedance measuring equipment of the present invention;

Fig. 6 is the specific implementation structure chart of human body impedance measuring equipment of the present invention when a certain section human body impedance of concrete acquisition;

Fig. 7 is human body impedance measuring equipment of the present invention another specific implementation structure chart when a certain section human body impedance of concrete acquisition;

Fig. 8 is the Multi-path electricity flow control switch of human body impedance measuring equipment of the present invention or the structural representation of plurality of voltages gauge tap.

The specific embodiment

For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.

As shown in Figure 1, a kind of technique of segmental bioelectrical impedance comprises:

Step S1 obtains the first measurement current value and the first measuring voltage value that the first on-fixed electrode pair obtains in the first measuring point of the trunk of human body, and the second measurement current value and the second measuring voltage value that obtains in the second measuring point of described trunk;

Step S2 obtains the 3rd measurement current value and the 3rd measuring voltage value that the second on-fixed electrode pair obtains in the 3rd measuring point of described trunk, and the 4th measurement current value and the 4th measuring voltage value that obtains in the 4th measuring point of described trunk; Wherein, described the first measurement current value, described second is measured current value, described the 3rd measurement current value and the described the 4th is measured current value and is equal to a current value;

Step S3, according to described the first measuring voltage value, described the second measuring voltage value, described the 3rd measuring voltage value, described the 4th measuring voltage value and described current value, obtain the 3rd resistance value between the second resistance value between the first resistance value between described the first measuring point and described the second measuring point, described the first measuring point and described the 3rd measuring point, described the second measuring point and described the 4th measuring point and the 4th resistance value between described the 3rd measuring point and described the 4th measuring point.

Technique of segmental bioelectrical impedance of the present invention records current value and the magnitude of voltage of the corresponding measuring point of trunk by the on-fixed electrode, and according to these current values and magnitude of voltage, obtain the impedance between the corresponding measuring point, thereby realized to obtain the impedance of trunk segmentation part, improved the accuracy to the testing result of human body impedance.

In another embodiment of the present invention, above-mentioned steps S3 can specifically comprise:

S31 according to described the first measuring voltage value and described the second measuring voltage value, obtains the first magnitude of voltage between described the first measuring point and described the second measuring point;

S32 according to described the first measuring voltage value and described the 3rd measuring voltage value, obtains the second voltage value between described the first measuring point and described the 3rd measuring point;

S33 according to described the first measuring voltage value and described the 4th measuring voltage value, obtains the tertiary voltage value between described the first measuring point and described the 4th measuring point;

S34 according to described the second measuring voltage value and described the 3rd measuring voltage value, obtains the 4th magnitude of voltage between described the second measuring point and described the 3rd measuring point;

S35 according to described the second measuring voltage value and described the 4th measuring voltage value, obtains the 5th magnitude of voltage between described the second measuring point and described the 4th measuring point;

S36 according to described the 3rd measuring voltage value and described the 4th measuring voltage value, obtains the 6th magnitude of voltage between described the 3rd measuring point and described the 4th measuring point;

S37, according to described the first magnitude of voltage, described second voltage value, described tertiary voltage value, described the 4th magnitude of voltage, described the 5th magnitude of voltage, described the 6th magnitude of voltage and described current value, obtain described the first resistance value, described the second resistance value, described the 3rd resistance value and described the 4th resistance value.

The measuring voltage of a certain measuring point of the trunk that this embodiment records by the on-fixed electrode, thereby obtain the voltage between certain two measuring point of trunk, and according to the voltage between this measuring point, obtain the impedance between this measuring point of human body, be a certain section impedance of trunk, thereby further improve the accuracy to the testing result of human body impedance.

In another embodiment of the present invention, comprise above-mentioned steps S1-S3(S31-S37) the basis on, any two measuring points in described the first measuring point, described the second measuring point, described the 3rd measuring point and described the 4th measuring point form a tetragon loop by described trunk;

Described the first magnitude of voltage is the poor of described the first measuring voltage value and described the second measuring voltage value;

Described second voltage value is the poor of described the first measuring voltage value and described the 3rd measuring voltage value;

Described tertiary voltage value is the poor of described the first measuring voltage value and described the 4th measuring voltage value;

Described the 4th magnitude of voltage is the poor of described the second measuring voltage value and described the 3rd measuring voltage value;

Described the 5th magnitude of voltage is the poor of described the second measuring voltage value and described the 4th measuring voltage value;

Described the 6th magnitude of voltage is the poor of described the 3rd measuring voltage value and described the 4th measuring voltage value.

Correspondingly, above-mentioned steps S37 comprises:

According to formula:

\{\begin{matrix} \frac{R_{2} \times (R_{4} + R_{5} + R_{6})}{R_{2} + (R_{4} + R_{5} + R_{6})} = U_{EF} / I \\ \frac{R_{4} \times (R_{2} + R_{5} + R_{6})}{R_{4} + (R_{2} + R_{5} + R_{6})} = U_{EG} / I \\ \frac{(R_{4} + R_{6}) \times (R_{2} + R_{5})}{(R_{4} + R_{6}) + (R_{2} + R_{5})} = U_{EH} / I \\ \frac{(R_{2} + R_{4}) \times (R_{5} + R_{6})}{(R_{2} + R_{4}) + (R_{5} + R_{6})} = U_{FG} / I \\ \frac{R_{5} \times (R_{2} + R_{4} + R_{6})}{R_{5} + (R_{2} + R_{4} + R_{6})} = U_{FH} / I \\ \frac{R_{6} \times (R_{4} + R_{2} + R_{5})}{R_{6} + (R_{4} + R_{2} + R_{5})} = U_{GH} / I \end{matrix}

Formula 1

Obtain described the first resistance value, described the second resistance value, described the 3rd resistance value and described the 4th resistance value; Wherein, U _EFBe described the first magnitude of voltage, U _EGBe described second voltage value, U _EHBe described tertiary voltage value, U _FGBe described the 4th magnitude of voltage, U _FHBe described the 5th magnitude of voltage, U _GHBe described the 6th magnitude of voltage, I is described current value, R ₂Be described the first resistance value, R ₄Be described the second resistance value, R ₅Be described the 3rd resistance value, R ₆Be described the 4th resistance value.

Equivalent circuit diagram below in conjunction with concrete trunk part describes in the said method, how to obtain the detailed process of the impedance of trunk part:

As shown in Figure 2, trunk impedance Segmentation Model is divided into eight sections with human body, wherein R ₁, R ₃Be left and right upper limb impedance, R ₂Be trunk epimere (breast), R ₄, R ₅Be the arranged on left and right sides impedance of trunk, R ₆Be trunk hypomere (fat of trunk abdominal part, moisture and degrease tissue content) impedance, R ₇, R ₈Be respectively left and right lower limb impedance.

If the on-fixed electrode pair is added in four-pole network E (e), F (f), G (g), the H (h) (optional place, two measuring points) of trunk Segmentation Model, as the first on-fixed electrode pair E (e) is added in this tetrapolar E place, the second on-fixed electrode pair F (f) is added in this tetrapolar F place; Perhaps the first on-fixed electrode pair E (e) is added in this tetrapolar E place, and the second on-fixed electrode pair F (f) is added in this tetrapolar G place, can certainly be the H place; Analogize to comply with; Wherein, E represents the voltage sample electrode in the on-fixed electrode pair of upper left shoulder, and e represents the current excitation electrode in the on-fixed electrode pair of upper left shoulder; F represents the voltage sample electrode in the on-fixed electrode pair of upper right shoulder, and f represents the current excitation electrode in the on-fixed electrode pair of upper right shoulder; G represents the voltage sample electrode in the on-fixed electrode pair of left lower abdomen, and g represents the current excitation electrode in the on-fixed electrode pair of left lower abdomen; H represents the voltage sample electrode in the on-fixed electrode pair of right lower abdomen, and h represents the current excitation electrode in the on-fixed electrode pair of right lower abdomen.

In e, f, g, h, appoint and get the current excitation electrode load energizing current signal I at two places, the exciting current that is carried in body also is I, (capitalization representative end) sample voltage value at corresponding voltage sample electrode place, such as load energizing current on the electrode of e and f, at E and its voltage of F place sampling, the like, thereby can obtain the voltage at E place and the voltage at F place, further obtain the voltage between E and the F, namely according to the measuring voltage of upper left shoulder and the measuring voltage of upper right shoulder, obtain the voltage between upper left shoulder and the upper right shoulder, i.e. U _EFAdopt and acquisition U _EFIdentical method can obtain U _EG, U _EH, U _FG, U _FH, and U _GH

As can be seen from Figure 2, E, F, G, among the H at least two consist of a loop by trunk, therefore through after repeatedly measuring, have:

\{\begin{matrix} R_{2} / / (R_{4} + R_{5} + R_{6}) = U_{EF} / I \\ R_{4} / / (R_{2} + R_{5} + R_{6}) = U_{EG} / I \\ (R_{4} + R_{6}) / / (R_{2} + R_{5}) = U_{EH} / I \\ (R_{2} + R_{4}) / / (R_{5} + R_{6}) = U_{FG} / I \\ R_{5} / / (R_{2} + R_{4} + R_{6}) = U_{FH} / I \\ R_{6} / / (R_{4} + R_{2} + R_{5}) = U_{GH} / I \end{matrix}

Formula 1 '

Wherein, in the equation 1 ' in the formula 1 ': R ₂// (R ₄+ R ₅+ R ₆) expression: R ₂With (R ₄+ R ₅+ R ₆) parallel connection; (R ₄+ R ₅+ R ₆) expression: R ₄, R ₅And R ₆Series connection,

Thereby the equation 1 in the formula 1 is arranged: Accordingly,

Other separate equation in the formula 1 ' is all corresponding with corresponding equation in the formula 1.

In this formula 1, obtaining U _EF, U _EG, U _EH, U _FG, U _FHAnd U _GHAfter, because I is known, therefore, can obtain R by 6 equations ₂, R ₄, R ₅And R ₆Be a certain section impedance of trunk, thereby improved the degree of accuracy of human body impedance measuring; After a certain section the impedance that obtains trunk, further can obtain according to these impedances the Fat Distribution situation at this position, thereby the people helps judge according to the Fat Distribution situation health status of human body.

Further, in another embodiment of the present invention, comprise on the basis of above-mentioned steps S1-S3, and on the basis of the realization means described in the various embodiments described above, technique of segmental bioelectrical impedance of the present invention can also comprise:

S4 obtains the 5th measurement current value and the 5th measuring voltage value that the first fixed electrode obtains the left upper extremity at described human body;

S5 obtains the second fixed electrode current value and the 6th measuring voltage value is measured in the 6th of the 6th measuring point that obtains at the right upper extremity of described human body;

S6 obtains the 3rd fixed electrode current value and the 7th measuring voltage value is measured in the 7th of the 7th measuring point that obtains at the left lower extremity of described human body;

S7 obtains the 4th fixed electrode current value and the 8th measuring voltage value is measured in the 8th of the 8th measuring point that obtains at the right lower extremity of described human body; Wherein, described the 5th measurement current value, the described the 6th is measured current value, described the 7th measurement current value and the described the 8th is measured current value and is equal to described current value.

Behind the current value of the measuring voltage at the extremity place that obtains human body and loading, in the process of the impedance of the extremity that obtain human body, wherein a kind of method is:

S8, according to described the 5th measuring voltage value, described the 6th measuring voltage value, described the 7th measuring voltage value, described the 8th measuring voltage value and described current value, obtain the 7th resistance value of the 6th resistance value of the 5th resistance value of described left upper extremity, described right upper extremity, described left lower extremity and the 8th resistance value of described right lower extremity.

Further, above-mentioned S8 can comprise:

S81, according to described the 5th measuring voltage value and described the 6th measuring voltage value, described the second fixed electrode that obtains described first fixed electrode pair at described left upper extremity place and described right upper extremity place between the 7th magnitude of voltage;

S82, according to described the 5th measuring voltage value and described the 7th measuring voltage value, described the 3rd fixed electrode that obtains described first fixed electrode pair at described left upper extremity place and described left lower extremity place between the 8th magnitude of voltage;

S83, according to described the 5th measuring voltage value and described the 8th measuring voltage value, described the 4th fixed electrode that obtains described first fixed electrode pair at described left upper extremity place and described right lower extremity place between the 9th magnitude of voltage;

S84, according to described the 6th measuring voltage value and described the 7th measuring voltage value, described the 3rd fixed electrode that obtains described second fixed electrode pair at described right upper extremity place and described left lower extremity place between the tenth magnitude of voltage;

S85, according to described the 6th measuring voltage value and described the 8th measuring voltage value, described the 4th fixed electrode that obtains described second fixed electrode pair at described right upper extremity place and described right lower extremity place between the 11 magnitude of voltage;

S86, according to described the 7th measuring voltage value and described the 8th measuring voltage value, described the 4th fixed electrode that obtains described the 3rd fixed electrode pair at described left lower extremity place and described right lower extremity place between the 12 magnitude of voltage;

S87, according to described the 7th magnitude of voltage, described the 8th magnitude of voltage, described the 9th magnitude of voltage, described the tenth magnitude of voltage, described the 11 magnitude of voltage, described the 12 magnitude of voltage and described current value, obtain described the 5th resistance value, described the 6th resistance value, described the 7th resistance value and described the 8th resistance value.

Further, above-mentioned steps S87 can comprise:

According to formula:

\{\begin{matrix} R_{1} + \frac{R_{2} \times (R_{4} + R_{5} + R_{6})}{R_{2} + (R_{4} + R_{5} + R_{6})} {+ R}_{3} = U_{AB} / I \\ R_{1} + \frac{R_{4} \times (R_{2} + R_{5} + R_{6})}{R_{4} + (R_{2} + R_{5} + R_{6})} + R_{7} = U_{AC} / I \\ R_{1} + \frac{(R_{4} + R_{6}) \times (R_{2} + R_{5})}{(R_{4} + R_{6}) + (R_{2} + R_{5})} + R_{8} = U_{AD} / I \\ R_{3} + \frac{(R_{2} + R_{4}) \times (R_{5} + R_{6})}{(R_{2} + R_{4}) + (R_{5} + R_{6})} + R_{7} = U_{BC} / I \\ R_{3} + \frac{R_{5} \times (R_{2} + R_{4} + R_{6})}{R_{5} + (R_{2} + R_{4} + R_{6})} + R_{8} = U_{BD} / I \\ R_{7} + \frac{R_{6} \times (R_{4} + R_{2} + R_{5})}{R_{6} + (R_{4} + R_{2} + R_{5})} + R_{8} = U_{GD} / I \end{matrix}

Formula 2

Obtain described the 5th resistance value, described the 6th resistance value, described the 7th resistance value and described the 8th resistance value; Wherein, U _ABBe the 7th magnitude of voltage, U _ACBe the 8th magnitude of voltage, U _ADBe the 9th magnitude of voltage, U _BCBe the tenth magnitude of voltage, U _BDBe the 11 magnitude of voltage, U _CDBe the 12 magnitude of voltage, I is described current value, R ₁Be described the 5th resistance value of described left upper extremity, R ₃Be described the 6th resistance value of described right upper extremity, R ₇Be described the 7th resistance value of described left lower extremity, R ₈Described the 8th resistance value for described right lower extremity;

Described the 7th magnitude of voltage is the poor of described the 5th measuring voltage value and described the 6th measuring voltage value;

Described the 8th magnitude of voltage is the poor of described the 5th measuring voltage value and described the 7th measuring voltage value;

Described the 9th magnitude of voltage is the poor of described the 5th measuring voltage value and described the 8th measuring voltage value;

Described the tenth magnitude of voltage is the poor of described the 6th measuring voltage value and described the 7th measuring voltage value;

Described the 11 magnitude of voltage is the poor of described the 6th measuring voltage value and described the 8th measuring voltage value;

Described the 12 magnitude of voltage is the poor of described the 7th measuring voltage value and described the 8th measuring voltage value.

Again as shown in Figure 2, the first fixed electrode is to being positioned over the place, left upper extremity measuring point of human body, the second fixed electrode is to being positioned over the place, right upper extremity measuring point of human body, the 3rd fixed electrode is to being positioned over the place, left lower extremity measuring point of human body, and the 4th fixed electrode is to being positioned over the place, right lower extremity measuring point of human body; Wherein, the galvanic electrode of four fixed electrode centerings is as the exciting current signal input part, and four voltage sample electrodes obtain the voltage signal of exciting current signal loading behind human body, take the exciting current that is carried in human body as I, appoint two places of getting among a, b, c, the d, the load energizing current signal, and obtain A, B, C, D electrode place obtains corresponding measuring voltage, further according to the measuring voltage value, obtains the magnitude of voltage between any two measuring points;

Thereby have:

\{\begin{matrix} R_{1} + R_{2} / / (R_{4} + R_{5} + R_{6}) + R_{3} = U_{AB} / I \\ R_{1} + R_{4} / / (R_{2} + R_{5} + R_{6}) + R_{7} = U_{AC} / I \\ R_{1} + (R_{4} + R_{6}) / / (R_{2} + R_{5}) + R_{8} = U_{AD} / I \\ R_{3} + (R_{2} + R_{4}) / / (R_{5} + R_{6}) + R_{7} = U_{BC} / I \\ R_{3} + R_{5} / / (R_{2} + R_{4} + R_{6}) + R_{8} = U_{BD} / I \\ R_{7} + R_{6} / / (R_{4} + R_{2} + R_{5}) + R_{8} = U_{CD} / I \end{matrix}

Formula 2 '

Wherein, in the equation 1 ' in the formula 2 ': R ₁+ R ₂// (R ₄+ R ₅+ R ₆)+R ₃=U _ABExpression: R ₂With (R ₄+ R ₅+ R ₆) rear and R in parallel ₁, R ₃Series connection,

Thereby the equation 1 in the formula 2 is arranged:

R_{1} + \frac{R_{2} \times (R_{4} + R_{5} + R_{6})}{R_{2} + (R_{4} + R_{5} + R_{6})} + R_{3} = U_{AB} / I;

Accordingly,

Other separate equation in the formula 2 ' is all corresponding with corresponding equation in the formula 2.

In this formula 2, obtaining R ₂, R ₄, R ₅And R ₆And U _EF, U _EG, U _EH, U _FG, U _FHAnd U _GHAfter, because I is known, therefore, can obtain R by 6 equations ₁, R ₃, R ₇And R ₈Be the impedance of human upper limb, thereby can obtain the impedance of extremity and the trunk of human body, improved the degree of accuracy of human body impedance measuring; After a certain section the impedance that obtains human body, further can obtain according to these impedances the Fat Distribution situation at this position, thereby the people helps judge according to the Fat Distribution situation health status of human body.

Behind the current value of the measuring voltage at the extremity place that obtains human body and loading, in the process of the impedance of the extremity that obtain human body, another kind of method is:

Behind above-mentioned steps S7, can further include:

S9 according to described the 5th measuring voltage value and described the first measuring voltage value, obtains the 13 magnitude of voltage;

S10 according to described the 6th measuring voltage value and described the second measuring voltage value, obtains the 14 magnitude of voltage;

S11 according to described the 7th measuring voltage value and described the 3rd measuring voltage value, obtains the 15 magnitude of voltage;

S12 according to described the 8th measuring voltage value and described the 4th measuring voltage value, obtains the 16 magnitude of voltage;

S13 according to described the 13 magnitude of voltage and described current value, directly obtains described the 5th resistance value of described left upper extremity;

S14 according to described the 14 magnitude of voltage and described current value, directly obtains described the 6th resistance value of described right upper extremity;

S15 according to described the 15 magnitude of voltage and described current value, directly obtains described the 7th resistance value of described left lower extremity;

S16 according to described the 16 magnitude of voltage and described current value, directly obtains described the 8th resistance value of described right lower extremity.

Among this embodiment, by the on-fixed electrode that is positioned over the fixed electrode of extremity and is positioned over trunk of the present invention, can directly obtain the impedance of extremity; As the first fixed electrode that can be by being positioned over left upper extremity to the first or second on-fixed electrode pair that is positioned over upper left shoulder, can obtain the magnitude of voltage between two measuring points of left upper extremity, according to the exciting current signal of this magnitude of voltage and loading, can directly obtain the impedance of left upper extremity according to Ohm's law again; Accordingly, the second fixed electrode that the impedance of right upper extremity can be by being positioned over right upper extremity is to directly measuring acquisition with the first or second on-fixed electrode pair that is positioned over right upper shoulder; The impedance of corresponding left lower extremity also can be by the 3rd fixed electrode to directly measuring acquisition with the first or second on-fixed electrode pair, and the impedance of right lower extremity also can be by the 4th fixed electrode to directly measuring acquisition with the first or second on-fixed electrode pair; Under certain application scenario, simple and easy to use like this.

In said method embodiment, the magnitude of voltage between any two measuring points that obtain human body (is above-mentioned U _EF, U _EG, U _EH, U _FG, U _FH, U _GH, U _AB, U _AC, U _AD, U _BC, U _BD, U _CD) time, specifically can be by obtaining such as Fig. 6 or method shown in Figure 7, with U _EGBe example, when loading low-frequency excitation current signal I, as shown in Figure 6, at G, the g electrode pair connects a measuring resistance, and the other end ground connection of this measuring resistance is like this for avoiding the human body short circuit, at first the voltage sample on-fixed electrode by the E place obtains voltage U i, and the voltage sample on-fixed electrode by the G place obtains voltage U s again; Ui-Us is obtained Uz, i.e. U _EGR4 is the bio-impedance of the left side trunk of trunk part among this figure, and is consistent with the R4 among Fig. 2.

When loading the high frequency pumping electric current, as shown in Figure 7, be with the difference of Fig. 6, the bio-impedance R4 of left side trunk expresses with the loop that the resistance R i of mutually series connection and Re and capacitor C m consist of.

Human tissue cell comprises intracellular fluid, extracellular fluid and cell membrane, when the high frequency pumping current signal is inputted, can adopt resistance and electric capacity three element bio-impedance model to represent biological tissue of human body.Cell membrane equivalent capacity Cm is with in parallel with extracellular fluid equivalent resistance Re again after intracellular fluid equivalent resistance Ri connects.The high frequency pumping electric current is passed into measurement model, detect Z _X, R _S(Z _X+ R _S) both end voltage, be U by the voltage after amplifying in proportion _Z, U _SAnd U _iBy circuit theory U as can be known _Z, U _SAnd U _iBetween relation satisfy parallelogram law, establish and pass through Z _XAnd R _SElectric current I, then:

In the formula | U _Z|, | U _S| be respectively U _ZAnd U _SAmplitude or virtual value, θ is U _ZAnd U _RBetween phase contrast.

Z then _XThe amplitude of impedance is:

| Z_{X} | = \frac{| U_{Z} |}{| U_{S} |} \cdot R_{S} = \frac{| U_{i} - U_{S} |}{| U_{S} |} \cdot R_{S}

Certainly, in the embodiments of the invention, if do not produce in the situation of short circuit, also can not need measuring resistance, obtain magnitude of voltage between certain two measuring point according to above-mentioned without the method described in the embodiment of measuring resistance.

The above embodiment of the present invention is by adopting fixed electrode and on-fixed electrode in conjunction with detection, and the information of finishing detects and the analysis and calculation of data, can obtain 6 parts such as upper limb, lower limb, chest (trunk epimere), abdominal part (trunk hypomere), left side of trunk and right side of trunk and whole impedance data, it is more accurate to measure.

With said method embodiment correspondingly, embodiments of the invention also provide a kind of body impedance measurement devices, comprising: the impedance of the trunk of human body obtains module, wherein, the impedance of described trunk obtains module and comprises:

Body impedance measurement devices of the present invention records current value and the magnitude of voltage of the corresponding measuring point of trunk equally by the on-fixed electrode, and according to these current values and magnitude of voltage, obtain the impedance between the corresponding measuring point, thereby realized to obtain the impedance of trunk part, improved the accuracy to the testing result of human body impedance.

Wherein, described the first acquisition unit comprises:

First obtains subelement, is used for according to described the first measuring voltage value and described the second measuring voltage value, obtains the first magnitude of voltage between described the first measuring point and described the second measuring point;

Second obtains subelement, is used for according to described the first measuring voltage value and described the 3rd measuring voltage value, obtains the second voltage value between described the first measuring point and described the 3rd measuring point;

The 3rd obtains subelement, is used for according to described the first measuring voltage value and described the 4th measuring voltage value, obtains the tertiary voltage value between described the first measuring point and described the 4th measuring point;

The 4th obtains subelement, is used for according to described the second measuring voltage value and described the 3rd measuring voltage value, obtains the 4th magnitude of voltage between described the second measuring point and described the 3rd measuring point;

The 5th obtains subelement, is used for according to described the second measuring voltage value and described the 4th measuring voltage value, obtains the 5th magnitude of voltage between described the second measuring point and described the 4th measuring point;

The 6th obtains subelement, is used for according to described the 3rd measuring voltage value and described the 4th measuring voltage value, obtains the 6th magnitude of voltage between described the 3rd measuring point and described the 4th measuring point;

The 7th obtains subelement, be used for according to described the first magnitude of voltage, described second voltage value, described tertiary voltage value, described the 4th magnitude of voltage, described the 5th magnitude of voltage, described the 6th magnitude of voltage and described current value, obtain described the first resistance value, described the second resistance value, described the 3rd resistance value and described the 4th resistance value.

Wherein, at least two measuring points in described the first measuring point, described the second measuring point, described the 3rd measuring point and described the 4th measuring point form a tetragon loop by described trunk; Such as the E(e among Fig. 2), F(f), G(g), at least two loops that form by trunk in H(h);

Wherein, described the 7th acquisition subelement specifically is used for according to formula:

\{\begin{matrix} \frac{R_{2} \times (R_{4} + R_{5} + R_{6})}{R_{2} + (R_{4} + R_{5} + R_{6})} = U_{EF} / I \\ \frac{R_{4} \times (R_{2} + R_{5} + R_{6})}{R_{4} + (R_{2} + R_{5} + R_{6})} = U_{EG} / I \\ \frac{(R_{4} + R_{6}) \times (R_{2} + R_{5})}{(R_{4} + R_{6}) + (R_{2} + R_{5})} = U_{EH} / I \\ \frac{(R_{2} + R_{4}) \times (R_{5} + R_{6})}{(R_{2} + R_{4}) + (R_{5} + R_{6})} = U_{FG} / I \\ \frac{R_{5} \times (R_{2} + R_{4} + R_{6})}{R_{5} + (R_{2} + R_{4} + R_{6})} = U_{FH} / I \\ \frac{R_{6} \times (R_{4} + R_{2} + R_{5})}{R_{6} + (R_{4} + R_{2} + R_{5})} = U_{GH} / I \end{matrix}

Wherein, said apparatus also comprises: the extremity impedance of described human body obtains module, and wherein, described extremity impedance obtains module and comprises:

The 6th obtains the unit, is used for obtaining the 5th measurement current value and the 5th measuring voltage value that the first fixed electrode obtains the left upper extremity at described human body;

The 7th obtains the unit, is used for obtaining the 6th of the 6th measuring point that the second fixed electrode obtains the right upper extremity at described human body and measures current value and the 6th measuring voltage value;

The 8th obtains the unit, is used for obtaining the 7th of the 7th measuring point that the 3rd fixed electrode obtains the left lower extremity at described human body and measures current value and the 7th measuring voltage value;

The 9th obtains the unit, is used for obtaining the 8th of the 8th measuring point that the 4th fixed electrode obtains the right lower extremity at described human body and measures current value and the 8th measuring voltage value; Wherein, described the 5th measurement current value, the described the 6th is measured current value, described the 7th measurement current value and the described the 8th is measured current value and is equal to described current value.

Wherein, described extremity impedance acquisition module also comprises:

The tenth obtains the unit, be used for according to described the 5th measuring voltage value, described the 6th measuring voltage value, described the 7th measuring voltage value, described the 8th measuring voltage value and described current value, obtain the 7th resistance value of the 6th resistance value of the 5th resistance value of described left upper extremity, described right upper extremity, described left lower extremity and the 8th resistance value of described right lower extremity.

Wherein, described the tenth acquisition unit comprises:

The 8th obtains subelement, is used for according to described the 5th measuring voltage value and described the 6th measuring voltage value, described the second fixed electrode that obtains described first fixed electrode pair at described left upper extremity place and described right upper extremity place between the 7th magnitude of voltage;

The 9th obtains subelement, is used for according to described the 5th measuring voltage value and described the 7th measuring voltage value, described the 3rd fixed electrode that obtains described first fixed electrode pair at described left upper extremity place and described left lower extremity place between the 8th magnitude of voltage;

The tenth obtains subelement, is used for according to described the 5th measuring voltage value and described the 8th measuring voltage value, described the 4th fixed electrode that obtains described first fixed electrode pair at described left upper extremity place and described right lower extremity place between the 9th magnitude of voltage;

The 11 obtains subelement, is used for according to described the 6th measuring voltage value and described the 7th measuring voltage value, described the 3rd fixed electrode that obtains described second fixed electrode pair at described right upper extremity place and described left lower extremity place between the tenth magnitude of voltage;

The 12 obtains subelement, is used for according to described the 6th measuring voltage value and described the 8th measuring voltage value, described the 4th fixed electrode that obtains described second fixed electrode pair at described right upper extremity place and described right lower extremity place between the 11 magnitude of voltage;

The 13 obtains subelement, is used for according to described the 7th measuring voltage value and described the 8th measuring voltage value, described the 4th fixed electrode that obtains described the 3rd fixed electrode pair at described left lower extremity place and described right lower extremity place between the 12 magnitude of voltage;

The 14 obtains subelement, be used for according to described the 7th magnitude of voltage, described the 8th magnitude of voltage, described the 9th magnitude of voltage, described the tenth magnitude of voltage, described the 11 magnitude of voltage, described the 12 magnitude of voltage and described current value, obtain described the 5th resistance value, described the 6th resistance value, described the 7th resistance value and described the 8th resistance value.

Wherein, the described the 14 obtains subelement specifically is used for, according to formula:

\{\begin{matrix} R_{1} + \frac{R_{2} \times (R_{4} + R_{5} + R_{6})}{R_{2} + (R_{4} + R_{5} + R_{6})} {+ R}_{3} = U_{AB} / I \\ R_{1} + \frac{R_{4} \times (R_{2} + R_{5} + R_{6})}{R_{4} + (R_{2} + R_{5} + R_{6})} + R_{7} = U_{AC} / I \\ R_{1} + \frac{(R_{4} + R_{6}) \times (R_{2} + R_{5})}{(R_{4} + R_{6}) + (R_{2} + R_{5})} + R_{8} = U_{AD} / I \\ R_{3} + \frac{(R_{2} + R_{4}) \times (R_{5} + R_{6})}{(R_{2} + R_{4}) + (R_{5} + R_{6})} + R_{7} = U_{BC} / I \\ R_{3} + \frac{R_{5} \times (R_{2} + R_{4} + R_{6})}{R_{5} + (R_{2} + R_{4} + R_{6})} + R_{8} = U_{BD} / I \\ R_{7} + \frac{R_{6} \times (R_{4} + R_{2} + R_{5})}{R_{6} + (R_{4} + R_{2} + R_{5})} + R_{8} = U_{GD} / I \end{matrix}

Wherein, said apparatus also comprises:

The 11 obtains the unit, is used for according to described the 5th measuring voltage value and described the first measuring voltage value, obtains the 13 magnitude of voltage;

The 12 obtains the unit, is used for according to described the 6th measuring voltage value and described the second measuring voltage value, obtains the 14 magnitude of voltage;

The 13 obtains the unit, is used for according to described the 7th measuring voltage value and described the 3rd measuring voltage value, obtains the 15 magnitude of voltage;

The 14 obtains the unit, is used for according to described the 8th measuring voltage value and described the 4th measuring voltage value, obtains the 16 magnitude of voltage;

The 15 obtains the unit, is used for according to described the 13 magnitude of voltage and described current value, directly obtains described the 5th resistance value of described left upper extremity;

The 16 obtains the unit, is used for according to described the 14 magnitude of voltage and described current value, directly obtains described the 6th resistance value of described right upper extremity;

The 17 obtains the unit, is used for according to described the 15 magnitude of voltage and described current value, directly obtains described the 7th resistance value of described left lower extremity;

The 18 obtains the unit, is used for according to described the 16 magnitude of voltage and described current value, directly obtains described the 8th resistance value of described right lower extremity.

As shown in Figure 3, embodiments of the invention also provide a kind of human body impedance measuring equipment, comprising:

Processor, at least two on-fixed electrode pairs that are connected with described processor, the first fixed electrode to, the second fixed electrode to, the 3rd fixed electrode to and the 4th fixed electrode pair; Wherein, described processor comprises the as above body impedance measurement devices described in the embodiment.

Wherein, for another example shown in Fig. 3 and 4, in this human body impedance measuring equipment, the first on-fixed electrode pair 11 in described at least two on-fixed electrode pairs comprises: the first voltage sample on-fixed electrode (such as the electrode E among Fig. 2) and the first exciting current on-fixed electrode (such as electrode e);

The second on-fixed electrode pair 12 in described at least two on-fixed electrode pairs comprises: second voltage sampling on-fixed electrode (such as the electrode F among Fig. 2) and the second exciting current on-fixed electrode (such as electrode f); Certainly, the first voltage sample on-fixed electrode also can be electrode G or H, and the first exciting current on-fixed electrode also can be g or h;

Described the first fixed electrode comprises 15: the first voltage sample fixed electrode (such as electrode A) and the first exciting current fixed electrode are (such as electrode a);

Described the second fixed electrode comprises 16: second voltage sampling fixed electrode (such as electrode B) and the second exciting current fixed electrode (such as electrode b);

Described the 3rd fixed electrode comprises 17: tertiary voltage sampling fixed electrode (such as electrode C) and the 3rd exciting current fixed electrode (such as electrode c);

Described the 4th fixed electrode comprises 18: the 4th voltage sample fixed electrode (such as electrode D) and the 4th exciting current fixed electrode (such as electrode d);

Described the first voltage sample on-fixed electrode, described second voltage sampling on-fixed electrode, described the first voltage sample fixed electrode, described second voltage sampling fixed electrode, described tertiary voltage sampling fixed electrode and the 4th voltage sample fixed electrode of being connected all are connected with a plurality of voltages gauge tap 19, described plurality of voltages gauge tap 19 is connected with a voltage signal converter section 20 and is connected with described processor 10, and described voltage signal converter section 20 is connected with described processor 10;

Described the first exciting current on-fixed electrode, described the second exciting current on-fixed electrode, described the first exciting current fixed electrode, described the second exciting current fixed electrode, described the 3rd exciting current fixed electrode and the 4th exciting current fixed electrode of being connected all are connected with a Multi-path electricity flow control switch 22, described Multi-path electricity flow control switch 22 is connected with a current signal converter section 21 and is connected with described processor 10, and described current signal converter section 21 is connected with described processor 10.

Microprocessor 10 control current signal converter sections 21 produce certain exciting current signal (can be the exciting current signal of high frequency, also can be the exciting current signal of low frequency) frequently; Certain exciting current signal frequently passes through Multi-path electricity flow control switch 22 selected inputs to exciting current electrode a, b, c, d, e, f, g, any among the h or a plurality of, thus form corresponding loop by human body, with electrode a, b, c, d, e, f, g, the corresponding voltage sample electrode A of h, B, C, D, E, F, G, the H place obtains corresponding measuring voltage value, and this measuring voltage value inputs to voltage signal converter section 20 by the control of plurality of voltages gauge tap 19, by this voltage signal converter section measuring voltage is carried out corresponding conversion process, input to microprocessor 10, in microprocessor 10, process by body impedance measurement devices, thereby obtain the impedance of trunk and/or the impedance of extremity.

In the embodiments of the invention, be when measuring for the first time, the first measuring point is E(e) the residing position of electrode pair, the second measuring point is F(f) the residing position of electrode pair; The 3rd measuring point is G(g when measuring for the second time) the residing position of electrode pair, the 4th measuring point is H(h) the residing position of electrode pair, here, G(g) electrode pair and E(e) electrode pair is an on-fixed electrode pair, H(h) electrode pair and F(f at entity) electrode pair may be an on-fixed electrode pair on entity; That is to say, among this embodiment, be with two on-fixed electrode pairs, and when this was measured, optional first, second and third measured with two measuring points in four, and select two other measuring point to measure when measuring next time again; Certainly, in the embodiments of the invention, being not limited to is two on-fixed electrode pairs, also can be three on-fixed electrode pairs, wherein, an on-fixed electrode pair be on-fixed electrode pair for subsequent use, if when two other on-fixed electrode pair damage or fault, can enable this on-fixed electrode pair for subsequent use; Certainly in the embodiments of the invention, also can be designed to four on-fixed electrode pairs, during use, can choose wherein two on-fixed electrode pairs wantonly measures, certainly, also can adopt simultaneously four on-fixed electrode pairs to measure, also can obtain and adopt two effects that the on-fixed electrode pair is identical;

Wherein, as shown in Figure 5, described voltage signal converter section 20 comprises: the voltage signal conditioner 201 that is connected with described plurality of voltages gauge tap 19, and the voltage signal A/D converter 202 that is connected with described voltage signal conditioner 201, described voltage signal A/D converter 202 is connected with described processor 10; Wherein, this voltage signal conditioner 201 specifically can comprise: voltage amplifier be connected the voltage filter that voltage amplifier connects; The filtered measuring voltage value of 202 pairs of voltage filters of voltage signal A/D converter is changed, and obtains being fit to the digital voltage signal that processor is processed, thereby obtain corresponding human body impedance in processor.

Wherein, described current signal converter section 21 comprises: the current signal regulator 211 that is connected with described Multi-path electricity flow control switch 22, and the current signal generator 212 that is connected with described current signal regulator 211, described current signal generator 212 is connected with described processor 10.

Described current signal generator 212 is under the control of microprocessor 10, produce the exciting current signal, this exciting current signal may have unsettled situation, after 211 stabilized treatment of current signal regulator, inputs to corresponding exciting current electrode by Multi-path electricity flow control switch 22;

Wherein, above-mentioned plurality of voltages gauge tap 19 is the measurement voltage signal that obtain corresponding voltage sample electrode under the control of processor 10; Multi-path electricity flow control switch 22 also is the exciting current signal to be inputed to corresponding exciting current electrode under the control of processor 10.

Further, among the above-mentioned embodiment shown in Figure 5, described the first on-fixed electrode pair 11, described the second on-fixed electrode pair 12, described the first fixed electrode to 15, described the second fixed electrode to 16, described the 3rd fixed electrode to 17 and described the 4th fixed electrode to wantonly 1 end that also connects a measuring resistance 23 in 18, the other end ground connection of described measuring resistance 23.

The effect of this measuring resistance 23 is, avoids not producing in the situation of short circuit, and the magnitude of voltage that obtains between any two measuring points of human body (is above-mentioned U _EF, U _EG, U _EH, U _FG, U _FH, U _GH, U _AB, U _AC, U _AD, U _BC, U _BD, U _CD) time, specifically can be by obtaining such as Fig. 6 or method shown in Figure 7, with U _EGBe example, as shown in Figure 6, when loading low-frequency excitation current signal I, at G, the g electrode pair connects a measuring resistance, and the other end ground connection of this measuring resistance is like this for avoiding the human body short circuit, at first the voltage sample on-fixed electrode by the E place obtains voltage U i, and the voltage sample on-fixed electrode by the G place obtains voltage U s again; Ui-Us is obtained Uz, i.e. U _EGR4 is the bio-impedance of the left side trunk of trunk part among this figure, and is consistent with the R4 among Fig. 2.

As shown in Figure 7, when loading the high frequency pumping electric current, be with the difference of Fig. 6, the bio-impedance R4 of left side trunk expresses with the loop that the resistance R i of mutually series connection and Re and capacitor C m consist of;

Z then _XThe amplitude of impedance is:

| Z_{X} | = \frac{| U_{Z} |}{| U_{S} |} \cdot R_{S} = \frac{| U_{i} - U_{S} |}{| U_{S} |} \cdot R_{S}

Certainly, in the solution of the present invention, if do not produce in the situation of short circuit, also can not need measuring resistance, above-mentionedly obtain magnitude of voltage between certain two measuring point without the method described in the embodiment of measuring resistance according to of the present invention.

Shown in Figure 8 is the structure chart of above-mentioned plurality of voltages gauge tap 19 or Multi-path electricity flow control switch 22, this switch comprises that a control end 53 is connected with processor 10, one input 51 and an outfan 52, input 51 is used for input current or voltage, and outfan 52 is used for output current or voltage.

Certainly, in this apparatus embodiments of the present invention, also include power supply, be used to whole power devices; In this apparatus embodiments, can also further be connected with host computer PC (computer) 25, specifically can be connected with host computer 25 by 232 level signal change-over circuits 24, the measurement result of the human body impedance of acquisition be sent to host computer, thereby can carry out next step analysis.

The above embodiment of the present invention is equally by adopting fixed electrode and on-fixed electrode in conjunction with detection, and the information of finishing detects and the analysis and calculation of data, can obtain 6 parts such as upper limb, lower limb, chest (trunk epimere), abdominal part (trunk hypomere), left side of trunk and right side of trunk and whole impedance data, it is more accurate to measure.

To sum up, method of the present invention, device and equipment are for the problem of present whole body impedance measurement method and the existence of segment impedance measurement method, adopt secure bond on-fixed test point pattern to add the network analytical method torso section of human body is carried out the distribution of impedance decomposition, tentatively set up trunk segmentation multistage bioelectrical impedance analysis model, can distinguish torso section upper and lower resistance value, by the externally measured node data that obtains more refinement, obtain trunk chest and abdominal part impedance data thereby analyze, improved the accuracy of human body impedance measuring, utilization has been arranged further according to the Fat Distribution situation at the impedance analysis trunk position at trunk position.

The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. a technique of segmental bioelectrical impedance is characterized in that, comprising:

2. technique of segmental bioelectrical impedance according to claim 1, it is characterized in that, according to described the first measuring voltage value, described the second measuring voltage value, described the 3rd measuring voltage value, described the 4th measuring voltage value and described current value obtain the first resistance value between described the first measuring point and described the second measuring point, the second resistance value between described the first measuring point and described the 3rd measuring point, the step of the 4th resistance value between the 3rd resistance value between described the second measuring point and described the 4th measuring point and described the 3rd measuring point and described the 4th measuring point comprises:

According to described the first measuring voltage value and described the second measuring voltage value, obtain the first magnitude of voltage between described the first measuring point and described the second measuring point;

According to described the first measuring voltage value and described the 3rd measuring voltage value, obtain the second voltage value between described the first measuring point and described the 3rd measuring point;

According to described the first measuring voltage value and described the 4th measuring voltage value, obtain the tertiary voltage value between described the first measuring point and described the 4th measuring point;

According to described the second measuring voltage value and described the 3rd measuring voltage value, obtain the 4th magnitude of voltage between described the second measuring point and described the 3rd measuring point;

According to described the second measuring voltage value and described the 4th measuring voltage value, obtain the 5th magnitude of voltage between described the second measuring point and described the 4th measuring point;

According to described the 3rd measuring voltage value and described the 4th measuring voltage value, obtain the 6th magnitude of voltage between described the 3rd measuring point and described the 4th measuring point;

According to described the first magnitude of voltage, described second voltage value, described tertiary voltage value, described the 4th magnitude of voltage, described the 5th magnitude of voltage, described the 6th magnitude of voltage and described current value, obtain described the first resistance value, described the second resistance value, described the 3rd resistance value and described the 4th resistance value.

3. technique of segmental bioelectrical impedance according to claim 2, it is characterized in that, at least two measuring points in described the first measuring point, described the second measuring point, described the 3rd measuring point and described the 4th measuring point form a tetragon loop by described trunk;

4. technique of segmental bioelectrical impedance according to claim 3, it is characterized in that, according to described the first magnitude of voltage, described second voltage value, described tertiary voltage value, described the 4th magnitude of voltage, described the 5th magnitude of voltage, described the 6th magnitude of voltage and described current value, the step that obtains described the first resistance value, described the second resistance value, described the 3rd resistance value and described the 4th resistance value comprises:

According to formula:

\{\begin{matrix} \frac{R_{2} \times (R_{4} + R_{5} + R_{6})}{R_{2} + (R_{4} + R_{5} + R_{6})} = U_{EF} / I \\ \frac{R_{4} \times (R_{2} + R_{5} + R_{6})}{R_{4} + (R_{2} + R_{5} + R_{6})} = U_{EG} / I \\ \frac{(R_{4} + R_{6}) \times (R_{2} + R_{5})}{(R_{4} + R_{6}) + (R_{2} + R_{5})} = U_{EH} / I \\ \frac{(R_{2} + R_{4}) \times (R_{5} + R_{6})}{(R_{2} + R_{4}) + (R_{5} + R_{6})} = U_{FG} / I \\ \frac{R_{5} \times (R_{2} + R_{4} + R_{6})}{R_{5} + (R_{2} + R_{4} + R_{6})} = U_{FH} / I \\ \frac{R_{6} \times (R_{4} + R_{2} + R_{5})}{R_{6} + (R_{4} + R_{2} + R_{5})} = U_{GH} / I \end{matrix}

5. technique of segmental bioelectrical impedance according to claim 4 is characterized in that, also comprises:

Obtain the 5th measurement current value and the 5th measuring voltage value that the first fixed electrode obtains the left upper extremity at described human body;

Obtain the second fixed electrode current value and the 6th measuring voltage value are measured in the 6th of the 6th measuring point that obtains at the right upper extremity of described human body;

Obtain the 3rd fixed electrode current value and the 7th measuring voltage value are measured in the 7th of the 7th measuring point that obtains at the left lower extremity of described human body;

Obtain the 4th fixed electrode current value and the 8th measuring voltage value are measured in the 8th of the 8th measuring point that obtains at the right lower extremity of described human body; Wherein, described the 5th measurement current value, the described the 6th is measured current value, described the 7th measurement current value and the described the 8th is measured current value and is equal to described current value.

6. technique of segmental bioelectrical impedance according to claim 5 is characterized in that, also comprises:

According to described the 5th measuring voltage value, described the 6th measuring voltage value, described the 7th measuring voltage value, described the 8th measuring voltage value and described current value, obtain the 7th resistance value of the 6th resistance value of the 5th resistance value of described left upper extremity, described right upper extremity, described left lower extremity and the 8th resistance value of described right lower extremity.

7. technique of segmental bioelectrical impedance according to claim 6, it is characterized in that, according to described the 5th measuring voltage value, described the 6th measuring voltage value, described the 7th measuring voltage value, described the 8th measuring voltage value and described current value, the step that obtains the 8th resistance value of the 7th resistance value of the 6th resistance value of the 5th resistance value of described left upper extremity, described right upper extremity, described left lower extremity and described right lower extremity comprises:

According to described the 5th measuring voltage value and described the 6th measuring voltage value, described the second fixed electrode that obtains described first fixed electrode pair at described left upper extremity place and described right upper extremity place between the 7th magnitude of voltage;

According to described the 5th measuring voltage value and described the 7th measuring voltage value, described the 3rd fixed electrode that obtains described first fixed electrode pair at described left upper extremity place and described left lower extremity place between the 8th magnitude of voltage;

According to described the 5th measuring voltage value and described the 8th measuring voltage value, described the 4th fixed electrode that obtains described first fixed electrode pair at described left upper extremity place and described right lower extremity place between the 9th magnitude of voltage;

According to described the 6th measuring voltage value and described the 7th measuring voltage value, described the 3rd fixed electrode that obtains described second fixed electrode pair at described right upper extremity place and described left lower extremity place between the tenth magnitude of voltage;

According to described the 6th measuring voltage value and described the 8th measuring voltage value, described the 4th fixed electrode that obtains described second fixed electrode pair at described right upper extremity place and described right lower extremity place between the 11 magnitude of voltage;

According to described the 7th measuring voltage value and described the 8th measuring voltage value, described the 4th fixed electrode that obtains described the 3rd fixed electrode pair at described left lower extremity place and described right lower extremity place between the 12 magnitude of voltage;

According to described the 7th magnitude of voltage, described the 8th magnitude of voltage, described the 9th magnitude of voltage, described the tenth magnitude of voltage, described the 11 magnitude of voltage, described the 12 magnitude of voltage and described current value, obtain described the 5th resistance value, described the 6th resistance value, described the 7th resistance value and described the 8th resistance value.

8. according to right 7 described technique of segmental bioelectrical impedances, it is characterized in that, according to described the 7th magnitude of voltage, described the 8th magnitude of voltage, described the 9th magnitude of voltage, described the tenth magnitude of voltage, described the 11 magnitude of voltage, described the 12 magnitude of voltage and described current value, the step that obtains described the 5th resistance value, described the 6th resistance value, described the 7th resistance value and described the 8th resistance value comprises:

According to formula:

\{\begin{matrix} R_{1} + \frac{R_{2} \times (R_{4} + R_{5} + R_{6})}{R_{2} + (R_{4} + R_{5} + R_{6})} {+ R}_{3} = U_{AB} / I \\ R_{1} + \frac{R_{4} \times (R_{2} + R_{5} + R_{6})}{R_{4} + (R_{2} + R_{5} + R_{6})} + R_{7} = U_{AC} / I \\ R_{1} + \frac{(R_{4} + R_{6}) \times (R_{2} + R_{5})}{(R_{4} + R_{6}) + (R_{2} + R_{5})} + R_{8} = U_{AD} / I \\ R_{3} + \frac{(R_{2} + R_{4}) \times (R_{5} + R_{6})}{(R_{2} + R_{4}) + (R_{5} + R_{6})} + R_{7} = U_{BC} / I \\ R_{3} + \frac{R_{5} \times (R_{2} + R_{4} + R_{6})}{R_{5} + (R_{2} + R_{4} + R_{6})} + R_{8} = U_{BD} / I \\ R_{7} + \frac{R_{6} \times (R_{4} + R_{2} + R_{5})}{R_{6} + (R_{4} + R_{2} + R_{5})} + R_{8} = U_{GD} / I \end{matrix}

9. technique of segmental bioelectrical impedance according to claim 5 is characterized in that, also comprises:

According to described the 5th measuring voltage value and described the first measuring voltage value, obtain the 13 magnitude of voltage;

According to described the 6th measuring voltage value and described the second measuring voltage value, obtain the 14 magnitude of voltage;

According to described the 7th measuring voltage value and described the 3rd measuring voltage value, obtain the 15 magnitude of voltage;

According to described the 8th measuring voltage value and described the 4th measuring voltage value, obtain the 16 magnitude of voltage;

According to described the 13 magnitude of voltage and described current value, directly obtain described the 5th resistance value of described left upper extremity;

According to described the 14 magnitude of voltage and described current value, directly obtain described the 6th resistance value of described right upper extremity;

According to described the 15 magnitude of voltage and described current value, directly obtain described the 7th resistance value of described left lower extremity;

According to described the 16 magnitude of voltage and described current value, directly obtain described the 8th resistance value of described right lower extremity.

10. a body impedance measurement devices is characterized in that, comprising: the impedance of the trunk of human body obtains module, and wherein, the impedance of described trunk obtains module and comprises:

11. body impedance measurement devices according to claim 10 is characterized in that, described first obtains the unit comprises:

12. body impedance measurement devices according to claim 11, it is characterized in that, between at least two measuring points in described the first measuring point, described the second measuring point, described the 3rd measuring point and described the 4th measuring point, form a tetragon loop by described trunk;

13. technique of segmental bioelectrical impedance according to claim 12 is characterized in that, the described the 7th obtains subelement specifically is used for according to formula:

\{\begin{matrix} \frac{R_{2} \times (R_{4} + R_{5} + R_{6})}{R_{2} + (R_{4} + R_{5} + R_{6})} = U_{EF} / I \\ \frac{R_{4} \times (R_{2} + R_{5} + R_{6})}{R_{4} + (R_{2} + R_{5} + R_{6})} = U_{EG} / I \\ \frac{(R_{4} + R_{6}) \times (R_{2} + R_{5})}{(R_{4} + R_{6}) + (R_{2} + R_{5})} = U_{EH} / I \\ \frac{(R_{2} + R_{4}) \times (R_{5} + R_{6})}{(R_{2} + R_{4}) + (R_{5} + R_{6})} = U_{FG} / I \\ \frac{R_{5} \times (R_{2} + R_{4} + R_{6})}{R_{5} + (R_{2} + R_{4} + R_{6})} = U_{FH} / I \\ \frac{R_{6} \times (R_{4} + R_{2} + R_{5})}{R_{6} + (R_{4} + R_{2} + R_{5})} = U_{GH} / I \end{matrix}

14. body impedance measurement devices according to claim 13 is characterized in that, also comprises: the extremity impedance of described human body obtains module, and wherein, described extremity impedance obtains module and comprises:

15. body impedance measurement devices according to claim 14 is characterized in that, described extremity impedance obtains module and also comprises:

16. body impedance measurement devices according to claim 15 is characterized in that, the described the tenth obtains the unit comprises:

17. body impedance measurement devices according to claim 16 is characterized in that, the described the 14 obtains subelement specifically is used for, according to formula:

\{\begin{matrix} R_{1} + \frac{R_{2} \times (R_{4} + R_{5} + R_{6})}{R_{2} + (R_{4} + R_{5} + R_{6})} {+ R}_{3} = U_{AB} / I \\ R_{1} + \frac{R_{4} \times (R_{2} + R_{5} + R_{6})}{R_{4} + (R_{2} + R_{5} + R_{6})} + R_{7} = U_{AC} / I \\ R_{1} + \frac{(R_{4} + R_{6}) \times (R_{2} + R_{5})}{(R_{4} + R_{6}) + (R_{2} + R_{5})} + R_{8} = U_{AD} / I \\ R_{3} + \frac{(R_{2} + R_{4}) \times (R_{5} + R_{6})}{(R_{2} + R_{4}) + (R_{5} + R_{6})} + R_{7} = U_{BC} / I \\ R_{3} + \frac{R_{5} \times (R_{2} + R_{4} + R_{6})}{R_{5} + (R_{2} + R_{4} + R_{6})} + R_{8} = U_{BD} / I \\ R_{7} + \frac{R_{6} \times (R_{4} + R_{2} + R_{5})}{R_{6} + (R_{4} + R_{2} + R_{5})} + R_{8} = U_{GD} / I \end{matrix}

18. body impedance measurement devices according to claim 14 is characterized in that, also comprises:

19. a human body impedance measuring equipment is characterized in that, comprising:

Processor, at least two on-fixed electrode pairs that are connected with described processor, the first fixed electrode to, the second fixed electrode to, the 3rd fixed electrode to and the 4th fixed electrode pair; Wherein, described processor comprises each described body impedance measurement devices such as claim 9-16.

20. human body impedance measuring equipment according to claim 19 is characterized in that,

The first on-fixed electrode pair in described at least two on-fixed electrode pairs comprises: the first voltage sample on-fixed electrode and the first exciting current on-fixed electrode;

The second on-fixed electrode pair in described at least two on-fixed electrode pairs comprises: second voltage sampling on-fixed electrode and the second exciting current on-fixed electrode;

Described the first fixed electrode is to comprising: the first voltage sample fixed electrode and the first exciting current fixed electrode;

Described the second fixed electrode is to comprising: second voltage sampling fixed electrode and the second exciting current fixed electrode;

Described the 3rd fixed electrode is to comprising: tertiary voltage sampling fixed electrode and the 3rd exciting current fixed electrode;

Described the 4th fixed electrode is to comprising: the 4th voltage sample fixed electrode and the 4th exciting current fixed electrode;

Described the first voltage sample on-fixed electrode, described second voltage sampling on-fixed electrode, described the first voltage sample fixed electrode, described second voltage sampling fixed electrode, described tertiary voltage sampling fixed electrode and the 4th voltage sample fixed electrode of being connected all are connected with a plurality of voltages gauge tap, described plurality of voltages gauge tap is connected with a voltage signal converter section and is connected with described processor, and described voltage signal converter section is connected with described processor;

Described the first exciting current on-fixed electrode, described the second exciting current on-fixed electrode, described the first exciting current fixed electrode, described the second exciting current fixed electrode, described the 3rd exciting current fixed electrode and the 4th exciting current fixed electrode of being connected all are connected with a Multi-path electricity flow control switch, described Multi-path electricity flow control switch is connected with a current signal converter section and is connected with described processor, and described current signal converter section is connected with described processor.

21. human body impedance measuring equipment according to claim 20, it is characterized in that, described voltage signal converter section comprises: the voltage signal conditioner that is connected with described plurality of voltages gauge tap, and the voltage signal A/D converter that is connected with described voltage signal conditioner, described voltage signal A/D converter is connected with described processor;

Described current signal converter section comprises: the current signal regulator that is connected with described Multi-path electricity flow control switch, and the current signal generator that is connected with described current signal regulator, described current signal generator is connected with described processor.

22. human body impedance measuring equipment according to claim 20, it is characterized in that, described the first on-fixed electrode pair, described the second on-fixed electrode pair, described the first fixed electrode to, described the second fixed electrode to, described the 3rd fixed electrode to and wantonly 1 end that also connects a measuring resistance of described the 4th fixed electrode centering, the other end ground connection of described measuring resistance.