CN106377259A - Blood state detection device and method of acquiring impedance change - Google Patents
Blood state detection device and method of acquiring impedance change Download PDFInfo
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- CN106377259A CN106377259A CN201610756447.0A CN201610756447A CN106377259A CN 106377259 A CN106377259 A CN 106377259A CN 201610756447 A CN201610756447 A CN 201610756447A CN 106377259 A CN106377259 A CN 106377259A
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Abstract
The invention provides a blood state detection device and a method of acquiring an impedance change. The blood state detection device comprises a clock signal device, a control part, an alternating power supply, a detection electrode pair and a detection part, wherein the clock signal device sends a triggering signal to the control part; the control part controls the alternating power supply to provide alternating currents with a first set time length to the detection electrode pair according to the triggering signal, and provides alternating currents with a second set time length to the detection electrode pair according to a main control signal; the detection electrode pair is stuck to skin of a to-be-detected part; the detection part detects a first impedance change value of the detection electrode pair in the first set time length; when an absolute value of the first impedance change value is larger than a set standard threshold value, a main control signal is sent to the control part; the detection part detects a second impedance change value of the detection electrode pair in the second set time length; and a blood state of the to-be-detected area can be determined according to the first and second impedance change values. The technical scheme provided requires low electricity loss.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly to a kind of blood status detection means and acquisition impedance variation
The method of value.
Background technology
During wound healing, wound is probably due to the coagulation function of patient itself is poor or other factorses lead to it
There is leakage blood or thrombosis occur in the blood of region, in order to anti-leak-stopping blood and thrombotic phenomena excessively seriously threaten patient's
Life security, it usually needs the blood status of wound region are detected.
In a kind of known blood status detection means, detecting electrode is adhered to by the skin surface in tested region
Right, to detecting electrode to alternating current is provided so that detecting electrode between can form the current loop of closure, corresponding examine
Survey device then can by real-time monitoring detecting electrode between load voltage changing value, with according to this load voltage changing value Lai
Determine the blood status of tested region.
It can be seen that, in technique scheme, need to continue to detecting electrode to providing alternating current, power consumption is higher.
Content of the invention
Embodiments provide a kind of blood status detection means and the method obtaining impedance variation value, power consumption
Relatively low.
In a first aspect, embodiments providing a kind of blood status detection means, including：
Clock signal device, control unit, alternating source, least one set detecting electrode to and test section；Wherein,
Described clock signal device, sends triggering letter to described control unit respectively for the time point at least two settings
Number；
Described control unit, for after receiving the trigger that described clock signal device sends, controlling described alternation electricity
Source is to described least one set detecting electrode to the alternating current providing the first setting duration；And send out receiving described test section
After the master signal sending, control described alternating source to described least one set detecting electrode to the alternation providing the second setting duration
Electric current；
Described least one set detecting electrode pair, can be adhered to the skin surface of tested region, receive described alternating source
The alternating current providing；
Described test section, for detecting described least one set detecting electrode to the first resistance setting described first in duration
Anti- changing value, when the absolute value of described first impedance variation value is more than level threshold value set in advance, sends out to described control unit
Send master signal；And, detect described least one set detecting electrode to the second impedance variation setting described second in duration
Value, determines the blood status of described tested region according to described first impedance variation value and described second impedance variation value.
Preferably,
Described test section, including：Signal gathering unit, the first computing unit, the second computing unit and the first judging unit；
Wherein,
Described signal gathering unit, for gathering described least one set detecting electrode according to the time delay interval periodicity setting
To at least one first load voltage values setting described first in duration；
Described first computing unit, for according between at least one first load voltage values described, the time delay of described setting
Every and described first setting duration pass through equation below calculate described least one set detecting electrode to current first setting when
Average impedance values in length：
Rij=(Vnj1+…Vnjm)*t0/(T1*I0)
Wherein, RijJ-th detecting electrode characterizing described first computing unit calculating is to when described in i-th first sets
Average impedance values in length；(Vnj1+…Vnjm) characterize the collection in the first setting duration described in i-th of described signal gathering unit
M the first load voltage values sum；t0Characterize time delay interval；T1Characterize the first setting duration；I0Characterize described alternating source to
Described least one set detecting electrode is to the alternating current providing；
Described second computing unit, for calculating described least one set detecting electrode to current first by equation below
Set the first impedance variation value in duration：
Cij=Rij-R1j
Wherein, CijJ-th detecting electrode characterizing described second computing unit calculating is to when described in i-th first sets
The first impedance variation value in length；R1jCharacterize j-th detecting electrode that described first computing unit calculates at the 1st described the
One sets the average impedance values in duration；
Whether described first judging unit, for judging the absolute value of described first impedance variation value more than set in advance
Level threshold value, when judged result is to be, sends master signal to described control unit.
Preferably,
Described signal gathering unit, is further used for gathering described least one set inspection according to the time delay interval periodicity setting
Survey electrode pair and set at least one second load voltage values in duration described second；
Described test section, further includes：3rd computing unit, the 4th computing unit and the second judging unit；Wherein,
Described 3rd computing unit, for according between at least one second load voltage values described, the time delay of described setting
Every and described second setting duration pass through equation below calculate described least one set detecting electrode to described second setting when
Average impedance values in length：
Rj=(Vj1+…Vjp)*t0/(T2*I0)
Wherein, RjJ-th detecting electrode characterizing described 3rd computing unit calculating sets in duration to described second
Average impedance values；(Vj1+…Vjp) characterize described signal gathering unit in described second j-th inspection setting collection in duration
Survey the sum of p the second load voltage values of electrode pair；t0Characterize time delay interval；T2Characterize the second setting duration；
4th computing unit, for calculating described least one set detecting electrode in the described second setting by equation below
The second impedance variation value in duration：
Cj=Rj-R1j
Wherein, CjJ-th detecting electrode characterizing described 4th computing unit calculating sets in duration to described second
The second impedance variation value；
Described second judging unit, for working as CijAnd CjIt is all higher than 0, and CijLess than or equal to CjWhen, determine described tested
There are thrombosis in region；Work as CijAnd CjIt is respectively less than 0, and CijMore than or equal to CjWhen, determine that described tested region occurs leakage blood.
Preferably,
Also include：The alarm device being connected with described second judging unit；Wherein,
Described second judging unit, for determining described tested region generation thrombosis, or, determine that described tested region is sent out
After raw leakage blood, send warning signal to described alarm device；
Described alarm device, is same as carrying out the alarm of setting means after receiving described warning signal.
Preferably,
Two detecting electrodes of detecting electrode centering described in each group, respectively described tested region skin surface viscous
Line between attached position passes through tested wound.
Preferably,
Described first sets duration is less than described second setting duration.
Second aspect, embodiments provide a kind of using described blood status inspection arbitrary in above-mentioned first aspect
Survey the method that device obtains impedance variation value, including：
By least one set detecting electrode to the skin surface sticking to tested region；
Send trigger using clock signal device in the time point of at least two settings to control unit respectively；
Received after described trigger using control unit, control alternating source to least one set detecting electrode to offer first
Set the alternating current of duration；
Detect least one set detecting electrode using test section to the first impedance variation value setting first in duration, the
When the absolute value of one impedance variation value is more than level threshold value set in advance, send master signal to control unit；
Receive described master signal using control unit, control alternating source to least one set detecting electrode, offer second to be set
The long alternating current of timing；
Obtain least one set detecting electrode using test section to the second impedance variation value setting described second in duration.
Preferably,
Described utilization test section detects least one set detecting electrode to the first impedance variation value setting first in duration,
When the absolute value of the first impedance variation value is more than level threshold value set in advance, send master signal to control unit, including：
Using signal gathering unit, least one set detecting electrode is periodically gathered to described according to the time delay interval setting
First sets at least one first load voltage values in duration；
Using the first computing unit according at least one first load voltage values described, the time delay interval of described setting and
Described first sets duration calculates least one set detecting electrode to average in the current first setting duration by equation below
Resistance value：
Rij=(Vnj1+…Vnjm)*t0/(T1*I0)
Wherein, RijJ-th detecting electrode characterizing the first computing unit calculating is to putting down of setting in durations at i-th first
All resistance values；(Vnj1+…Vnjm) characterize the m first load electricity that signal gathering unit sets collection in duration at i-th first
The sum of pressure value；t0Characterize time delay interval；T1Characterize the first setting duration；I0Characterize alternating source to least one set detecting electrode pair
The alternating current providing；
Using the second computing unit, described least one set detecting electrode is calculated in the current first setting by equation below
The first impedance variation value in duration：
Cij=Rij-R1j
Wherein, CijCharacterize j-th detecting electrode that the second computing unit calculates to the setting in durations at i-th first
One impedance variation value；R1jJ-th detecting electrode characterizing the first computing unit calculating is to putting down of setting in duration at the 1st first
All resistance values；
Whether it is more than standard set in advance using the absolute value that the first judging unit judges described first impedance variation value
Threshold value, when judged result is to be, sends master signal to control unit.
Preferably,
Described utilization test section detects that least one set detecting electrode becomes in the described second the second impedance setting in duration
Change value, including：
Using signal gathering unit according to set time delay interval periodicity gather described least one set detecting electrode to
Described second sets at least one second load voltage values in duration；
Using the 3rd computing unit according at least one second load voltage values described, the time delay interval of described setting and
Described second setting duration calculates described least one set detecting electrode by equation below and sets in duration to described second
Average impedance values：
Rj=(Vj1+…Vjp)*t0/(T2*I0)
Wherein, RjJ-th detecting electrode characterizing the 3rd computing unit calculating is to the average resistance setting second in duration
Anti- value；(Vj1+…Vjp) characterize signal gathering unit in the second set j-th detecting electrode pair of collection in duration p second
The sum of load voltage values；t0Characterize time delay interval；T2Characterize the second setting duration；
Using the 4th computing unit, least one set detecting electrode is calculated by equation below and set duration to described second
The second interior impedance variation value：
Cj=Rj-R1j
Wherein, CjJ-th detecting electrode characterizing the 4th computing unit calculating is to the second resistance setting second in duration
Anti- changing value.
Preferably,
It is not less than the first impedance variation value in the second impedance variation value, and when the first impedance variation value is more than 0, or first
Impedance variation value is less than the second impedance variation value, and when the first impedance variation value is not more than the second impedance variation value, also includes：
Send warning signal using the second judging unit to alarm device；
Using alarm device after receiving described warning signal, carry out the alarm of setting means.
Embodiments provide a kind of blood status detection means and the method obtaining impedance variation value, in this device
In, least one set detecting electrode to the skin surface that can be adhered to tested region, because human body is conductor so that alternation is electric
Source to detecting electrode to providing alternating current when, each group of detecting electrode between can be returned by tested region formation electric current
Road；When there are abnormal (such as leakage blood or thrombosis) within the extremely short time due to the blood status in human body, can't be to human body
Cause to endanger accordingly, therefore, triggering letter can be sent in the time point of at least two settings to control unit by clock signal device
Number so that control unit control after receiving trigger alternating source to least one set detecting electrode to provide first set when
Long alternating current, and then detecting electrode is directed to respectively in the corresponding first electric current setting formation in duration by test section
The first impedance variation value in loop is detected；Simultaneously as human body itself electrolyte may lead to it when occurring uneven
The resistance value of itself is undergone mutation, and by arranging corresponding level threshold value, the exhausted of the first impedance variation value is detected in test section
During to value more than level threshold value, then the blood status of explanation tested region are likely to occur exception；Further, due to blood status
When occurring abnormal, the recovery capability itself possessing is minimum, the change in the instantaneous impedance that is, blood status of tested region lead to extremely
There is seriality, the blood status of tested region is detected it may happen that when abnormal, then master can be sent to control unit in test section
Control signal, so that control unit controls alternating source to each group of detecting electrode to the alternating current providing the second setting duration, enters
And pass through test section and detect each group of detecting electrode to corresponding second impedance variation value in the second setting duration respectively again；
Accordingly, test section can judge the continuous of tested region change in the instantaneous impedance according to the first impedance variation value and the second impedance variation value
Property is to determine the blood status of tested region；As fully visible, device provided in an embodiment of the present invention can realize detection blood shape
While state, the alternating source in device sets to each group of detecting electrode corresponding to offer first only under the control of control unit
Duration and second sets the alternating current of duration, and that is, alternating source need not continue to each group of detecting electrode to offer alternation electricity
Stream, power consumption is relatively low.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of structure chart of blood status detection means that one embodiment of the invention provides；
Fig. 2 is the structure chart of another kind of blood status detection means that one embodiment of the invention provides；
Fig. 3 is the structure chart of another blood status detection means that one embodiment of the invention provides；
Fig. 4 is the method that a kind of utilization blood status detection means that one embodiment of the invention provides obtains impedance variation value
Flow chart.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described it is clear that described embodiment is
The a part of embodiment of the present invention, rather than whole embodiments, based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment being obtained on the premise of not making creative work, broadly falls into the scope of protection of the invention.
As shown in figure 1, embodiments providing a kind of blood status detection means, including：
Clock signal device 101, control unit 102, alternating source 103, least one set detecting electrode are to 104 and test section
105；Wherein,
Described clock signal device 101, sends to described control unit 102 respectively for the time point at least two settings and touches
Signal；
Described control unit 102, described for, after receiving the trigger that described clock signal device 101 sends, controlling
Alternating source 103 provides the alternating current of the first setting duration to described least one set detecting electrode to 104；And receiving
After the master signal that described test section 105 sends, control described alternating source 103 to described least one set detecting electrode to 104
The alternating current of the second setting duration is provided；
Described least one set detecting electrode, to 104, can be adhered to the skin surface of tested region, receives described alternation electricity
The alternating current that source provides；
Described test section 105, for detect described least one set detecting electrode to 104 described first set duration in
First impedance variation value, when the absolute value of described first impedance variation value is more than level threshold value set in advance, to described control
Portion 102 processed sends master signal；And, detect that described least one set detecting electrode sets in duration described second to 104
Second impedance variation value, determines the blood of described tested region according to described first impedance variation value and described second impedance variation value
Liquid status.
In the above embodiment of the present invention, least one set detecting electrode to the skin surface that can be adhered to tested region,
Due to human body be conductor so that alternating source to detecting electrode to providing alternating current when, each group of detecting electrode between energy
Enough current loop is formed by tested region；Because the blood status in human body occur abnormal (such as leakage within the extremely short time
Blood or thrombosis) when, can't human body be caused endanger accordingly, therefore, can be by clock signal device at least two settings
Time point sends trigger so that control unit controls alternating source to least one set after receiving trigger to control unit
Detecting electrode is to the alternating current providing the first setting duration, and then is directed to detecting electrode to respectively corresponding by test section
The first impedance variation value in the current loop being formed in first setting duration is detected；Simultaneously as human body itself electrolysis
Matter may lead to the resistance value of its own to be undergone mutation when occurring uneven, by arranging corresponding level threshold value, in test section
When the absolute value the first impedance variation value is detected is more than level threshold value, then illustrate that the blood status of tested region are likely to occur different
Often；When further, due to blood status generation exception, the recovery capability itself possessing is minimum, i.e. the blood of tested region
Abnormal state and the change in the instantaneous impedance that leads to has seriality, the blood status of tested region is detected in test section it may happen that different
Chang Shi, then can send master signal to control unit so that control unit controls alternating source to each group of detecting electrode to providing the
The alternating current of two setting durations, and then detect each group of detecting electrode to respectively in the second setting duration again by test section
Interior corresponding second impedance variation value；Accordingly, test section can be sentenced according to the first impedance variation value and the second impedance variation value
The blood status to determine tested region for the seriality of disconnected tested region change in the instantaneous impedance；As fully visible, the embodiment of the present invention provides
Device can realize detection blood status while, the alternating source in device only under the control of control unit to each group examine
Surveying electrode pair provides the corresponding first alternating current setting duration and the second setting duration, and that is, alternating source need not continue to each
, to providing alternating current, power consumption is relatively low for group detecting electrode.、
In the above embodiment of the present invention, two detecting electrodes of one group of detecting electrode centering can pass through corresponding adhesion respectively
Mechanism's (such as silica gel paster) sticks to the skin surface of tested region, and two detecting electrodes can in the adhesion locations of skin surface
Rationally arrange in conjunction with practical business demand, such as, when detecting the blood status of wound region, can respectively one group be detected
Two detecting electrodes in electrode pair stick to the both sides of wound respectively, for the ease of wrapping up to wound, detecting electrode away from
It can be controlled between 0 to 5cm with a distance from wound edge；Meanwhile, two detecting electrodes of detecting electrode centering described in each group,
Line between the adhesion locations of skin surface passes through tested wound respectively；Examine for two that make same group of detecting electrode centering
The alternating current surveying circulation between electrode may pass through tested wound, realizes the blood status of tested wound place tested region are entered
Row detection.
In the above embodiment of the present invention, clock signal device can accordingly the time cycle in multiple different time points to control
Portion sends trigger；Control unit after receiving the master signal of test section, can by corresponding signal priority treatment principle,
Temporarily cease and receive the trigger that clock signal device sends, and examined to each group according to the master signal sky alternating source receiving
Survey the alternating current that electrode pair exports the second setting duration respectively；No matter test section be enough after second sets duration whether
Determine whether the blood status of tested region occur exception, through second set duration after, when control unit can continue to
The trigger that clock signal indicator sends.
As shown in Fig. 2 in a preferred embodiment of the invention, described test section 105, including：Signal gathering unit 1051,
First computing unit 1052, the second computing unit 1053 and the first judging unit 1054；Wherein,
Described signal gathering unit 1051, for gathering described least one set detection according to the time delay interval periodicity setting
Electrode pair 104 sets at least one first load voltage values in duration described first；
Described first computing unit 1052, for according at least one first load voltage values described, the prolonging of described setting
When interval and described first setting duration described least one set detecting electrode is calculated to 104 current the by equation below 1
One sets the average impedance values in duration：
Rij=(Vnj1+…Vnjm)*t0/(T1*I0) (1)
Wherein, RijJ-th detecting electrode characterizing described first computing unit 1052 calculating sets to described in i-th first
Average impedance values in timing is long；(Vnj1+…Vnjm) characterize described signal gathering unit 1051 when described in i-th first sets
The sum of m the first load voltage values of collection in long；t0Characterize time delay interval；T1Characterize the first setting duration；I0Characterize described friendship
Variable power source 103 alternating current to 104 offers to described least one set detecting electrode；
Described second computing unit 1053, for by equation below 2 calculate described least one set detecting electrode to 104
Current first sets the first impedance variation value in duration：
Cij=Rij-R1j
Wherein, CijCharacterize j-th detecting electrode that described second computing unit 1053 calculates to 104 described in i-th the
One sets the first impedance variation value in duration；R1jCharacterize j-th detecting electrode pair that described first computing unit 1052 calculates
104 set the average impedance values in duration at the 1st described first；
Described first judging unit 1054, whether the absolute value for judging described first impedance variation value is more than sets in advance
Fixed level threshold value, when judged result is to be, sends master signal to described control unit 102.
In the above embodiment of the present invention, time delay interval can be pre-set by signal gathering unit, in alternating source to inspection
When surveying the alternating current that electrode pair provides the first setting duration, signal gathering unit periodically can gather every according to this time delay interval
One detecting electrode is at least one first load voltage setting first in duration；For example, time delay interval is 0.3s,
First a length of 0.9s when setting, then, the alternating current of one group of detecting electrode a length of 0.9s when alternating source provides it with
When enabling current detection electrode pair to form current loop, signal gathering unit then can be worked as with 0.3 second for three collections of cycle
Front detecting electrode is to corresponding three the first load voltage values.
In the above embodiment of the present invention, may be led to its own due to when the electrolyte in human body itself occurs uneven
There is different degrees of mutation in different time points in resistance value, here, by arranging corresponding level threshold value, the first computing unit
Each detecting electrode can be calculated at one according to multiple first load voltage values that signal gathering unit gathers by formula 1
First sets the average impedance values in duration, and using first first average impedance values setting in duration as initial accordingly
Resistance value；Second computing unit can calculate same detecting electrode to the resistance setting at i-th first in duration by formula 2
Anti- changing value；First judging unit can set corresponding impedance in duration by comparing a detecting electrode to current first
Whether to be likely to occur blood status different to weigh tested region for magnitude relationship between changing value and the level threshold value pre-setting
Often；For example, signal gathering unit sets, at first, three first load electricity gathering a detecting electrode pair in duration
Pressure is worth for 0.4V, 0.5V and 0.6V, first a length of 0.9s when setting, and time delay interval is 0.3s, and alternating source is to current detection electricity
It is 0.25A extremely to the alternating current providing, the first computing unit then can calculate current detection electrode pair first by formula 1
The individual average impedance values setting in duration are as 2 ohm；Accordingly, examine when signal gathering unit sets in duration at i-th first
When three the first load voltages measuring current detection electrode pair are for 0.8V, 1.0V 1.2V, the first computing unit passes through formula 1
Calculate current detection electrode pair in the average impedance values setting in duration for i-th first as 4 ohm；So, second calculate list
First then current detection electrode pair can be calculated in the first impedance variation value setting in duration for i-th first as 2 Europe by formula 2
Nurse；If the first judging unit level threshold value set in advance is 1.5 ohm, then the first judging unit can determine whether out the first resistance
The absolute value of anti-changing value is more than the level threshold value pre-setting, and illustrates that the blood status of tested region are likely to occur exception；This
When, the first judging unit can send master signal to control unit so that control unit can control alternating source to each detection electricity
Extremely to the alternating current providing the second setting duration, facilitate test section that the blood status of tested region are detected in detail.
Accordingly, as shown in Fig. 2 in a preferred embodiment of the invention, described signal gathering unit 1051, use further
Set in duration described second to 104 in described least one set detecting electrode is gathered according to the time delay interval periodicity setting
At least one second load voltage values；
Described test section 105, further includes：3rd computing unit 1055, the 4th computing unit 1056 and the second judgement
Unit 1057；Wherein,
Described 3rd computing unit 1055, for according at least one second load voltage values described, the prolonging of described setting
When interval and described second setting duration described least one set detecting electrode is calculated to 104 described the by equation below 3
Two set the average impedance values in duration：
Rj=(Vj1+…Vjp)*t0/(T2*I0) (3)
Wherein, RjJ-th detecting electrode characterizing described 3rd computing unit 1055 calculating sets described second to 104
Average impedance values in duration；(Vj1+…Vjp) characterize the collection in the described second setting duration of described signal gathering unit 1051
J-th detecting electrode to 104 p the second load voltage values sum；t0Characterize time delay interval；T2Characterize the second setting duration；
4th computing unit 1056, for calculating described least one set detecting electrode to 104 described by equation below 4
Second sets the second impedance variation value in duration：
Cj=Rj-R1j(4)
Wherein, CjJ-th detecting electrode characterizing described 4th computing unit 1056 calculating sets described second to 104
The second impedance variation value in duration；
Described second judging unit 1057, for working as CijAnd CjIt is all higher than 0, and CijLess than or equal to CjWhen, determine described
There are thrombosis in tested region；Work as CijAnd CjIt is respectively less than 0, and CijMore than or equal to CjWhen, determine that described tested region occurs leakage blood.
In the above embodiment of the present invention, test section detect tested region blood status be likely to occur exception after, pass through
To control unit send master signal so that control unit control alternating source to each detecting electrode to provide second set when
Long alternating current, so, test section can occur after exception according to the blood status of tested region, its corresponding impedance variation
Value has successional feature, accurately determines the blood status of tested region.
For example, a length of 1.8s during the second setting, time delay interval is 0.3s, and signal gathering unit then can be with 0.3s as week
One detecting electrode of 6 collections of phase is to 6 the second load voltage values setting second in duration；Accordingly, such as, six
Two load voltage values are respectively 1.25V, 1.2V, 1.3V, 1.2V, 1.3V, 1.25V, when alternating current is 0.25A, the 3rd calculating
Unit can calculate current detection electrode pair by formula 3 and set average impedance values in duration as 5 ohm second；When first
The current detection electrode pair that computing unit calculates in first first average impedance values setting in duration as 2 ohm, and second
, when first sets impedance variation value in duration as 2 ohm, the 4th calculating is singly for the current detection electrode pair that computing unit calculates
Unit can calculate current detection electrode pair by formula 4 and set impedance variation value in duration as 3 ohm second；It can be seen that, when
Second impedance variation value of front detecting electrode pair and the first impedance variation value are respectively 3 ohm and 2 ohm, the first impedance variation value
It is all higher than zero with the second impedance variation value, and the second impedance variation value is more than the first impedance variation value, and the resistance of tested region is described
Anti- changing value has seriality, and that is, the blood of tested region leads to the resistance value of tested region persistently to increase because there is thrombotic phenomena
Greatly, now, the second judging unit can accurately determine that the blood of tested region occurs thrombosis；In the same manner, when same detecting electrode
To the first impedance variation value and the second impedance variation value be respectively less than 0, the opposite number of the first impedance variation value is more than and pre-sets
Level threshold value, and the first impedance variation value be more than or equal to the second impedance variation value when, then explanation tested region have occurred and that
Leakage blood, leads to the resistance value of tested region continuously to reduce, and the second judging unit then can accurately determine that tested region occurs leakage blood.
In one embodiment of the invention, in order to reduce power consumption further, first sets duration can be relatively small；Meanwhile,
When blood in order to realize tested region is detected in test section is likely to occur abnormality, test section can be to the blood of tested region
Liquid status carry out multiple load voltage signal collection, improve the accuracy of testing result, second sets duration can be relatively large；I.e.
Described first sets duration is less than described second setting duration；For example, the first setting duration could be arranged to no more than 1s,
Second setting duration could be arranged to not less than 10s.
Further, there is abnormal (such as bleeding or thrombosis) in the blood status in order to realize tested region is detected
When, realize informing that user or the blood status of doctor's tested region have occurred and that exception by corresponding alarm mode, as Fig. 3 institute
Show, in a preferred embodiment of the invention, also include：The alarm device 301 being connected with described second judging unit 1057；Its
In,
Described second judging unit 1057, for determining described tested region generation thrombosis, or, determine described tested area
After domain occurs leakage blood, send warning signal to described alarm device 301；
Described alarm device 301, is same as carrying out the alarm of setting means after receiving described warning signal.
In the above embodiment of the present invention, alarm device can carry out the alarm of setting means in conjunction with practical business scene, such as,
The display lamp of display particular color light, and push corresponding warning information etc. to specific subscriber terminal equipment.
As shown in figure 4, embodiments providing one kind using described blood status detection arbitrary in above-described embodiment
The method that device obtains impedance variation value, the method may include steps of：
Step 401, by least one set detecting electrode to the skin surface sticking to tested region；
Step 402, sends trigger to control unit using clock signal device respectively in the time point of at least two settings；
Step 403, is received after described trigger using control unit, controls alternating source to least one set detecting electrode pair
The alternating current of the first setting duration is provided；
Using test section, step 404, detects that least one set detecting electrode becomes in the first the first impedance setting in duration
Change value, when the absolute value of the first impedance variation value is more than level threshold value set in advance, sends master signal to control unit；
Step 405, receives described master signal using control unit, controls alternating source to least one set detecting electrode to carrying
Alternating current for the second setting duration；
Step 406, obtains least one set detecting electrode to the second resistance setting described second in duration using test section
Anti- changing value.
Get detecting electrode to second set duration in the second impedance variation value after, can be in conjunction with practical business
Demand is processed again accordingly, such as, according to the second impedance variation value and the other specification (temperature of such as tested region
Running parameter) determine whether the blood status of tested region are normal；And for example, tested region is being determined according to the second impedance variation value
Blood there are thrombosis after, can be combined with the sample analyses of respective numbers to determine blood coagulation degree and temperature and the impedance of blood
Between respectively corresponding impact coefficient, and then calculate the blood coagulation degree of the blood that thrombosis occur.
In a preferred embodiment of the invention, described utilization test section detection least one set detecting electrode is in the first setting
The first impedance variation value in duration, when the absolute value of the first impedance variation value is more than level threshold value set in advance, to control
Portion processed sends master signal, including：
A1：Using signal gathering unit, least one set detecting electrode is periodically gathered in institute according to the time delay interval setting
State at least one first load voltage values in the first setting duration；
A2：Using the first computing unit according to the time delay interval of at least one first load voltage values described, described setting
And described first set duration by equation below 1 calculate least one set detecting electrode to current first set duration in
Average impedance values：
Rij=(Vnj1+…Vnjm)*t0/(T1*I0) (1)
Wherein, RijJ-th detecting electrode characterizing the first computing unit calculating is to putting down of setting in durations at i-th first
All resistance values；(Vnj1+…Vnjm) characterize the m first load electricity that signal gathering unit sets collection in duration at i-th first
The sum of pressure value；t0Characterize time delay interval；T1Characterize the first setting duration；I0Characterize alternating source to least one set detecting electrode pair
The alternating current providing；
A3：Using the second computing unit, described least one set detecting electrode is calculated to current first by equation below 2
Set the first impedance variation value in duration：
Cij=Rij-R1j(2)
Wherein, CijCharacterize j-th detecting electrode that the second computing unit calculates to the setting in durations at i-th first
One impedance variation value；R1jJ-th detecting electrode characterizing the first computing unit calculating is to putting down of setting in duration at the 1st first
All resistance values；
A4：Whether it is more than mark set in advance using the absolute value that the first judging unit judges described first impedance variation value
Quasi- threshold value, when judged result is to be, sends master signal to control unit.
In a preferred embodiment of the invention, described utilization test section detection least one set detecting electrode is to described second
The the second impedance variation value setting in duration includes：
B1：Using signal gathering unit, described least one set detecting electrode pair is gathered according to the time delay interval periodicity setting
Set at least one second load voltage values in duration described second；
B2：Using the 3rd computing unit according to the time delay interval of at least one second load voltage values described, described setting
And described second setting duration pass through equation below calculate described least one set detecting electrode to described second setting duration
Interior average impedance values：
Rj=(Vj1+…Vjp)*t0/(T2*I0)
Wherein, RjJ-th detecting electrode characterizing the 3rd computing unit calculating is to the average resistance setting second in duration
Anti- value；(Vj1+…Vjp) characterize signal gathering unit in the second set j-th detecting electrode pair of collection in duration p second
The sum of load voltage values；t0Characterize time delay interval；T2Characterize the second setting duration；
B3：Using the 4th computing unit, least one set detecting electrode is calculated to when described second sets by equation below
The second impedance variation value in length：
Cj=Rj-R1j
Wherein, CjJ-th detecting electrode characterizing the 4th computing unit calculating is to the second resistance setting second in duration
Anti- changing value.
In a preferred embodiment of the invention, it is not less than the first impedance variation value in the second impedance variation value, and the first resistance
When anti-changing value is more than 0, or the first impedance variation value is less than the second impedance variation value, and the first impedance variation value is not more than the
During two impedance variation values, also include：
C1：Send warning signal using the second judging unit to alarm device；
C2：Using alarm device after receiving described warning signal, carry out the alarm of setting means.
In sum, each embodiment of the present invention at least has the advantages that：
1st, in the blood status detection means that one embodiment of the invention provides, least one set detecting electrode is to can be attached
To the skin surface of tested region, due to human body be conductor so that alternating source to detecting electrode to providing alternating current when, often
One group of detecting electrode between current loop can be formed by tested region；Because the blood status in human body are when extremely short
During interior generation abnormal (such as leakage blood or thrombosis), can't human body be caused endanger accordingly, therefore, clock signal can be passed through
Device sends trigger so that control unit controls after receiving trigger in the time point of at least two settings to control unit
Alternating source alternating current to offer the first setting duration to least one set detecting electrode, and then detection is directed to by test section
The first impedance variation value in the current loop that electrode pair is formed respectively in the corresponding first setting duration is detected；With
When, the resistance value of its own may be led to undergo mutation due to when human body itself electrolyte occurs uneven, corresponding by setting
Level threshold value, test section detect the first impedance variation value absolute value be more than level threshold value when, then illustrate tested region
Blood status be likely to occur exception；When further, due to blood status generation exception, the recovery capability pole itself possessing
Little, the change in the instantaneous impedance that is, blood status of tested region lead to extremely has seriality, tested region is detected in test section
Blood status it may happen that when abnormal, then can send master signal to control unit so that control unit controls alternating source to every
One group of detecting electrode is to the alternating current providing the second setting duration, and then detects each group of detecting electrode again by test section
To corresponding second impedance variation value in the second setting duration respectively；Accordingly, test section can be according to the first impedance variation
Value and the second impedance variation value judge the seriality of the tested region change in the instantaneous impedance blood status to determine tested region；To sum up may be used
See, device provided in an embodiment of the present invention can be while realizing detection blood status, and the alternating source in device is only controlling
To each group of detecting electrode to providing the corresponding first alternating current setting duration and the second setting duration under the control in portion, that is, hand over
Variable power source need not continue to each group of detecting electrode to providing alternating current, and power consumption is relatively low.
2nd, in one embodiment of the invention, two detecting electrodes of detecting electrode centering described in each group, respectively in skin table
Line between the adhesion locations in face passes through tested wound；Make stream between two detecting electrodes of same group of detecting electrode centering
Logical alternating current may pass through tested wound, realizes the blood status of tested wound place tested region are detected.
3rd, in one embodiment of the invention, first sets duration can be relatively small, is such as set to no more than 1s, realizes into one
Step reduces the power consumption of blood status detection means；Second sets duration can be relatively large, is such as set to the 10s that do not rain,
When blood tested region is detected in test section is likely to occur abnormality, facilitate the blood status to tested region for the test section
Carry out multiple load voltage signal collection, the accuracy of testing result can be improved.
4th, in one embodiment of the invention, by arranging corresponding alarm device, determine that tested region occurs in test section
After leakage blood or generation thrombosis, send warning signal so that alarm device carries out the alarm of setting means to alarm device, can be real
Now the alarm mode by setting informs that exception in user or the blood status of doctor's tested region in time, facilitates user
Or doctor processes blood dyscrasia phenomenon in time by corresponding medical procedure in time, prevent blood status abnormal phenomena from continuing to dislike
Change.
It should be noted that herein, such as first and second etc relational terms are used merely to an entity
Or operation is made a distinction with another entity or operation, and not necessarily requires or imply exist between these entities or operation
Any this actual relation or order.And, term " inclusion ", "comprising" or its any other variant are intended to non-
The comprising of exclusiveness, so that including a series of process of key elements, method, article or equipment not only include those key elements,
But also include other key elements being not expressly set out, or also include being consolidated by this process, method, article or equipment
Some key elements.In the absence of more restrictions, the key element being limited by sentence " including ", does not arrange
Remove and also there is other same factor in the process including described key element, method, article or equipment.
One of ordinary skill in the art will appreciate that：The all or part of step realizing said method embodiment can be passed through
Completing, aforesaid program can be stored in the storage medium of embodied on computer readable the related hardware of programmed instruction, this program
Upon execution, execute the step including said method embodiment；And aforesaid storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
Last it should be noted that：The foregoing is only presently preferred embodiments of the present invention, be merely to illustrate the skill of the present invention
Art scheme, is not intended to limit protection scope of the present invention.All any modifications made within the spirit and principles in the present invention,
Equivalent, improvement etc., are all contained in protection scope of the present invention.
Claims (10)
1. a kind of blood status detection means is it is characterised in that include：Clock signal device, control unit, alternating source, at least one
Group detecting electrode to and test section；Wherein,
Described clock signal device, sends trigger to described control unit respectively for the time point at least two settings；
Described control unit, for after receiving the trigger that described clock signal device sends, control described alternating source to
Described least one set detecting electrode is to the alternating current providing the first setting duration；And receiving what described test section sent
After master signal, control described alternating source to described least one set detecting electrode to the alternation electricity providing the second setting duration
Stream；
Described least one set detecting electrode pair, can be adhered to the skin surface of tested region, and receiving described alternating source provides
Alternating current；
Described test section, for detecting described least one set detecting electrode to the first impedance change setting described first in duration
Change value, when the absolute value of described first impedance variation value is more than level threshold value set in advance, sends master to described control unit
Control signal；And, detect described least one set detecting electrode to the second impedance variation value setting described second in duration, root
Determine the blood status of described tested region according to described first impedance variation value and described second impedance variation value.
2. blood status detection means according to claim 1 it is characterised in that
Described test section, including：Signal gathering unit, the first computing unit, the second computing unit and the first judging unit；Its
In,
Described signal gathering unit, for according to set time delay interval periodicity gather described least one set detecting electrode to
Described first sets at least one first load voltage values in duration；
Described first computing unit, for according at least one first load voltage values described, described setting time delay interval with
And described first setting duration pass through equation below calculate described least one set detecting electrode to current first setting duration in
Average impedance values：
Rij=(Vnj1+…Vnjm)*t0/(T1*I0)
Wherein, RijJ-th detecting electrode characterizing described first computing unit calculating sets in duration to described in i-th first
Average impedance values；(Vnj1+…Vnjm) characterize described signal gathering unit in the described in i-th first m setting collection in duration
The sum of individual first load voltage values；t0Characterize time delay interval；T1Characterize the first setting duration；I0Characterize described alternating source to institute
State least one set detecting electrode to the alternating current providing；
Described second computing unit, for calculating described least one set detecting electrode in the current first setting by equation below
The first impedance variation value in duration：
Cij=Rij-R1j
Wherein, CijJ-th detecting electrode characterizing described second computing unit calculating sets in duration to described in i-th first
The first impedance variation value；R1jJ-th detecting electrode characterizing described first computing unit calculating sets at the 1st described first
Average impedance values in timing is long；
Described first judging unit, whether the absolute value for judging described first impedance variation value is more than standard set in advance
Threshold value, when judged result is to be, sends master signal to described control unit.
3. blood status detection means according to claim 2 it is characterised in that
Described signal gathering unit, is further used for gathering described least one set detection electricity according to the time delay interval periodicity setting
Extremely at least one second load voltage values setting described second in duration；
Described test section, further includes：3rd computing unit, the 4th computing unit and the second judging unit；Wherein,
Described 3rd computing unit, for according at least one second load voltage values described, described setting time delay interval with
And described second setting duration pass through equation below calculate described least one set detecting electrode to described second setting duration in
Average impedance values：
Rj=(Vj1+…Vjp)*t0/(T2*I0)
Wherein, RjJ-th detecting electrode characterizing described 3rd computing unit calculating is average in duration to setting described second
Resistance value；(Vj1+…Vjp) characterize described signal gathering unit in described second j-th detecting electrode setting collection in duration
To p the second load voltage values sum；t0Characterize time delay interval；T2Characterize the second setting duration；
4th computing unit, sets duration for calculating described least one set detecting electrode by equation below to described second
The second interior impedance variation value：
Cj=Rj-R1j
Wherein, CjJ-th detecting electrode characterizing described 4th computing unit calculating is to second in the described second setting duration
Impedance variation value；
Described second judging unit, for working as CijAnd CjIt is all higher than 0, and CijLess than or equal to CjWhen, determine described tested region
There are thrombosis；Work as CijAnd CjIt is respectively less than 0, and CijMore than or equal to CjWhen, determine that described tested region occurs leakage blood.
4. blood status detection means according to claim 3 it is characterised in that
Also include：The alarm device being connected with described second judging unit；Wherein,
Described second judging unit, for determining described tested region generation thrombosis, or, determine that described tested region is leaked
After blood, send warning signal to described alarm device；
Described alarm device, is same as carrying out the alarm of setting means after receiving described warning signal.
5. according to described blood status detection means arbitrary in Claims 1-4 it is characterised in that
Two detecting electrodes of detecting electrode centering described in each group, respectively in the adhesion position of the skin surface of described tested region
Line between putting passes through tested wound.
6. according to described blood status detection means arbitrary in Claims 1-4 it is characterised in that
Described first sets duration is less than described second setting duration.
7. a kind of method that in utilization claim 1 to 6, arbitrary described blood status detection means obtains impedance variation value, its
It is characterised by, including：
By least one set detecting electrode to the skin surface sticking to tested region；
Send trigger using clock signal device in the time point of at least two settings to control unit respectively；
Received after described trigger using control unit, control alternating source to least one set detecting electrode to offer first setting
The alternating current of duration；
Detect least one set detecting electrode using test section to the first impedance variation value setting first in duration, in the first resistance
When the absolute value of anti-changing value is more than level threshold value set in advance, send master signal to control unit；
Using control unit receive described master signal, control alternating source to least one set detecting electrode to provide second set when
Long alternating current；
Obtain least one set detecting electrode using test section to the second impedance variation value setting described second in duration.
8. method according to claim 7 it is characterised in that
Described utilization test section detects least one set detecting electrode to the first impedance variation value setting first in duration, the
When the absolute value of one impedance variation value is more than level threshold value set in advance, send master signal to control unit, including：
Using signal gathering unit, least one set detecting electrode is periodically gathered to described first according to the time delay interval setting
Set at least one first load voltage values in duration；
Using the first computing unit according at least one first load voltage values described, the time delay interval of described setting and described
First sets duration calculates least one set detecting electrode to the average impedance setting current first in duration by equation below
Value：
Rij=(Vnj1+…Vnjm)*t0/(T1*I0)
Wherein, RijJ-th detecting electrode characterizing the first computing unit calculating is to the average resistance setting at i-th first in durations
Anti- value；(Vnj1+…Vnjm) characterize m the first load voltage values that signal gathering unit sets collection in duration at i-th first
Sum；t0Characterize time delay interval；T1Characterize the first setting duration；I0Characterize alternating source to least one set detecting electrode to offer
Alternating current；
Using the second computing unit, described least one set detecting electrode is calculated by equation below and set duration to current first
The first interior impedance variation value：
Cij=Rij-R1j
Wherein, CijJ-th detecting electrode characterizing the second computing unit calculating is to the first resistance setting in durations at i-th first
Anti- changing value；R1jJ-th detecting electrode characterizing the first computing unit calculating is to the average resistance setting at the 1st first in duration
Anti- value；
Whether it is more than level threshold value set in advance using the absolute value that the first judging unit judges described first impedance variation value,
When judged result is to be, send master signal to control unit.
9. method according to claim 8 it is characterised in that
Described utilization test section detects least one set detecting electrode to the second impedance variation value setting described second in duration,
Including：
Using signal gathering unit, described least one set detecting electrode is gathered to described according to the time delay interval periodicity setting
Second sets at least one second load voltage values in duration；
Using the 3rd computing unit according at least one second load voltage values described, the time delay interval of described setting and described
It is average in duration to setting described second that second setting duration calculates described least one set detecting electrode by equation below
Resistance value：
Rj=(Vj1+…Vjp)*t0/(T2*I0)
Wherein, RjJ-th detecting electrode characterizing the 3rd computing unit calculating is to the average impedance values setting second in duration；
(Vj1+…Vjp) characterize signal gathering unit in the second p second load setting j-th detecting electrode pair of collection in duration
The sum of magnitude of voltage；t0Characterize time delay interval；T2Characterize the second setting duration；
Calculate least one set detecting electrode using the 4th computing unit by equation below to set in duration to described second
Second impedance variation value：
Cj=Rj-R1j
Wherein, CjJ-th detecting electrode characterizing the 4th computing unit calculating is to the second impedance variation setting second in duration
Value.
10. method according to claim 9 it is characterised in that
It is not less than the first impedance variation value in the second impedance variation value, and when the first impedance variation value is more than 0, or the first impedance
Changing value is less than the second impedance variation value, and when the first impedance variation value is not more than the second impedance variation value, also includes：
Send warning signal using the second judging unit to alarm device；
Using alarm device after receiving described warning signal, carry out the alarm of setting means.
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| WO2020232706A1 (en) * | 2019-05-23 | 2020-11-26 | 麦层移动健康管理有限公司 | Method and device for measuring body fluid and its changes and for measuring blood flow changes |
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