CN206576865U - A kind of human body electric-physiology parameter determines device - Google Patents
A kind of human body electric-physiology parameter determines device Download PDFInfo
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- CN206576865U CN206576865U CN201621273632.6U CN201621273632U CN206576865U CN 206576865 U CN206576865 U CN 206576865U CN 201621273632 U CN201621273632 U CN 201621273632U CN 206576865 U CN206576865 U CN 206576865U
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The utility model is related to a kind of human body electric-physiology parameter and determines device, including four metal electrode boards and master controller, master controller includes MCU control cores (1), USB interface (2), power-switching circuit (3) and four path electrode observing and controlling loops (4), power-switching circuit (3) respectively with USB interface (2), MCU control cores (1) and electrode observing and controlling loop (4) connection, 5V Power converts for USB interface (2) to be provided are different size of burning voltage, electrode observing and controlling loop (4) connects one to one with metal electrode board, and be connected respectively with MCU control cores (1), for receiving MCU control cores (1) control, it is grounded after making metal electrode board connection setting voltage or connection resistance, and the voltage signal of metal electrode board is sent to MCU control cores (1), MCU control cores (1) are connected with USB interface (2).Compared with prior art, the utility model have the advantages that comprehensively, measurement result it is accurate.
Description
Technical field
The utility model is related to a kind of human parameters measurement apparatus, determines and fills more particularly, to a kind of human body electric-physiology parameter
Put.
Background technology
The analysis of human body electrophysiological model and parametric measurement can provide weight for the assessment even medical diagnosis on disease of health status
The information wanted.Human body electrophysiological model is uneven resistance and capacitance profile formula parameter model, current human body electric-physiology parameter
Measure almost all be that human body resistance or impedance are measured by additional various forms of electric signals, but assay method lack
, there is very big blindness, resistance or impedance measurements are by body capacitance in the weary research and analysis to human body electrophysiological model
Influence and it is not accurate enough.Also have extremely indivedual measure to body capacitance, simply determine in fact human body touch to circuit board certain
Cause the change of direct-to-ground capacitance during individual metallic region, be not the measure to real body capacitance.In a word, prior art is to people
The measure of body electrophysiological model parameter, it is on the one hand not comprehensive enough, the equivalent capacity of human body is have ignored, on the other hand in the survey of resistance
Ignore capacitive effect due to a lack of the understanding to electrophysiological model in amount and make it that measurement result is inaccurate.
Utility model content
The purpose of this utility model is exactly the defect in order to overcome above-mentioned prior art presence and provides a kind of high accuracy
Human body electric-physiology parameter determine device.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of human body electric-physiology parameter determines device, including four metal electrode boards and master controller, described main control
Device includes MCU control cores, USB interface, power-switching circuit and four path electrode observing and controlling loops, described power-switching circuit point
It is not connected with USB interface, MCU control cores and electrode observing and controlling loop, described electrode observing and controlling loop and metal electrode board are one by one
Correspondence connection, and be connected respectively with MCU control cores, described MCU control cores are connected with USB interface.
Described electrode observing and controlling loop includes ADC signal conditioning branch road, DAC drivers branch road, digital regulation resistance branch road, height
Metal electrode board is connected by resistance branch and ground connection branch road, described ADC signal conditioning branch road with MCU control cores, described
DAC drivers branch road, digital regulation resistance branch road, high resistance branch road and ground connection branch road are connected to metal electricity by variable connector respectively
Pole plate, is respectively used to make metal electrode board connection setting voltage, makes metal electrode board variable resistance ground connection, high resistance ground and directly connect
Ground.
The resistance of described high resistance branch road is more than 10M Ω.
Described ADC signal conditioning branch road includes signal condition chip and ADC chips, described signal condition chip difference
It is connected with the input of metal electrode board and ADC chips, the output end of described ADC chips is connected with MCU control cores.
Described DAC drivers branch road includes DAC chip and driver, and described driver is defeated with DAC chip respectively
Go out end and variable connector connection, the input of described DAC chip is connected with MCU control cores.
Compared with prior art, the utility model has advantages below：
(1) device is powered using USB interface and outwards transmits data, and inside carries power-switching circuit, for electrode
Observing and controlling loop and MCU control cores are powered, simple in construction, without the use of other power supplys；The voltage security that USB is provided is reliable.
(2) by MCU control cores and four electrode observing and controlling loops realize independent control to four metal electrode boards and
Measurement, to the measure of human body electric-physiology parameter more fully.
(3) electrode observing and controlling loop includes five branch roads, wherein four branch roads pass through multidiameter option switch and MCU control cores
Connection, makes metal electrode board have four kinds of different circuit connection states, played in four capacitor resistor unit parametric measurements
Not same-action；Another branch road is remained up, and MCU control cores is persistently obtained the voltage of battery lead plate.
(4) digital regulation resistance branch road enables metal electrode board variable resistance to be grounded, in order to adjusted in each continuous mode
The whole voltage for being added in human body, makes it keep a value relatively fixed, i.e., each capacitor resistor unit parametric measurement is maintained at equal
Under the conditions of, improve the reliability of overall measurement result.
Brief description of the drawings
Fig. 1 be human body electrophysiological model and its with the present embodiment metal electrode board annexation schematic diagram；
Fig. 2 is the structural representation that the present embodiment determines device；
Fig. 3 is the structural representation of the present embodiment master controller；
Reference：
1 is MCU control cores；2 be USB interface；3 be power-switching circuit；4 be electrode observing and controlling loop；41 be ADC signal
Nurse one's health branch road；42 be DAC driver branch roads；43 be digital regulation resistance branch road；44 be high resistance branch road；45 be ground connection branch road；46
For variable connector；51st, 52,53,54 be respectively metal electrode board.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the utility model
Implemented premised on technical scheme, give detailed embodiment and specific operating process, but guarantor of the present utility model
Shield scope is not limited to following embodiments.
Embodiment 1
The present embodiment determines the equivalent resistance and electricity under ultralow safe dc voltage in human body electrophysiological model by four limbs
Hold.When being determined by four limbs, human body electrophysiological model is equivalent to five capacitor resistor units as shown in Figure 1, wherein Rs1And Rs2For etc.
Imitate series resistance, RpFor equivalent parallel resistance, C is equivalent capacity.Four capacitor resistor units corresponding with four limbs are by corresponding connection gold
Belong to battery lead plate 51,52,53,54.
The human body electric-physiology parameter of the present embodiment determines device, by four pieces of metal electrode boards 51,52,53,54 and main control
Device is constituted.As shown in figure 3, the electrode observing and controlling loop 4 that metal electrode board is accessed in master controller by wire.
As shown in Fig. 2 master controller is by USB interface 2, power-switching circuit 3, four electrode observing and controlling loops 4 and MCU
Control core 1 is constituted, as shown in Figure 2.MCU control cores 1 in master controller are connected with USB interface 2.
Four pieces of metal electrode boards 4, wherein two pieces are torch pole, the measurand both hands palm of the hand is kept flat towards battery lead plate during detection
In electrode surface and close contact；Other two pieces are pin battery lead plate, and measurand is stood on battery lead plate barefoot.To prevent length
Contact sweat in phase test process repeatedly and be corroded, battery lead plate is generally made of stainless steel material.
Stabilization of the 5V Power converts that power-switching circuit 3 provides USB interface 2 for needed for master controller other each several parts
Voltage, the 3.3V as needed for MCU control cores 1,5V and ± 9V needed for electrode observing and controlling loop 4 etc..
Four electrode observing and controlling loops 4 have identical structure, exemplified by one of them, its internal composition and with
The annexation of MCU control cores 1 is as shown in Figure 3.Electrode observing and controlling loop 4 is main to nurse one's health branch road 41, DAC drivings by ADC signal
Device branch road 42, digital regulation resistance branch road 43, high resistance branch road 44, ground connection branch road 45 and variable connector 46 are constituted, and its function is logical
Cross MUX and realize electrode condition switching and measuring electrode voltage signal.Multidiameter option switch causes electrode can with 4
Choosing connection：DAC and driver, digital regulation resistance, high resistance ground, it is directly grounded, corresponding to four kinds of states of electrode：Voltage output
State, variable resistance ground state, high resistance ground state, is directly grounded state.No matter electrode is in which kind of state, electrode observing and controlling loop
4 voltage measurement function is in effective status all the time.
MCU control cores 1 are the control cores of master controller, control and realize whole measurement process.With left hand electrodes
Exemplified by continuous mode, master controller controls left hand electrodes to be voltage output state, output one by electrode observing and controlling loop 4 during measure
Individual safe dc voltage, human body left hand is added to by left hand electrodes, and now left hand electrodes are referred to as anode.And the right hand is used as antithesis electricity
Pole is referred to as negative electrode, is controlled as variable resistance ground state；Left foot electrode is referred to as near-end Passive electrode, and it is passive that right crus of diaphragm electrode is referred to as distal end
Electrode, is controlled as high resistance ground state.
Negative electrode be set to the purpose of variable resistance ground state be in order to which adjustment is added in the voltage of human body in each continuous mode,
It is set to keep a value relatively fixed.
Now human body forms an electrical network with outer meeting resistance, and MCU control cores 1 simultaneously continuously gather four electrodes
On waveform voltage signal.The current signal of each electrode can be obtained by the grounding resistance of waveform voltage signal data and electrode
Waveform.
Due to capacity effect, the electric current that test starts rear each electrode is gradually reduced and relatively stable in a level, so
Three below electric-physiology parameter is parsed according to circuital law afterwards：Rs、Rp, C, wherein Rs=Rs1+Rs2。
Embodiment 2
A kind of human body electric-physiology parameter determines device, in addition to host computer, and USB interface 2 is connected with host computer, therefore USB
Interface 2 is both the interface that host computer provides power supply for master controller, is also the data communication passage of master controller and host computer, because
This whole device need not be reconfigured at other external power sources, easy to use.
Remaining is same as Example 1.
Claims (5)
1. a kind of human body electric-physiology parameter determines device, it is characterised in that described including four metal electrode boards and master controller
Master controller include MCU control cores (1), USB interface (2), power-switching circuit (3) and four path electrode observing and controlling loops (4),
Described power-switching circuit (3) is connected with USB interface (2), MCU control cores (1) and electrode observing and controlling loop (4) respectively, institute
The electrode observing and controlling loop (4) stated connects one to one with metal electrode board, and is connected respectively with MCU control cores (1), described
MCU control cores (1) are connected with USB interface (2).
2. a kind of human body electric-physiology parameter according to claim 1 determines device, it is characterised in that described electrode observing and controlling
Loop (4) includes ADC signal conditioning branch road (41), DAC drivers branch road (42), digital regulation resistance branch road (43), high resistance branch
Road (44) and ground connection branch road (45), described ADC signal conditioning branch road (41) connect metal electrode board and MCU control cores (1)
Connect, described DAC drivers branch road (42), digital regulation resistance branch road (43), high resistance branch road (44) and ground connection branch road (45) point
Metal electrode board is not connected to by variable connector (46), is respectively used to make metal electrode board connection setting voltage, makes metal electricity
Pole plate variable resistance ground connection, high resistance ground and it is directly grounded.
3. a kind of human body electric-physiology parameter according to claim 2 determines device, it is characterised in that described high resistance branch
The resistance on road (44) is more than 10M Ω.
4. a kind of human body electric-physiology parameter according to claim 2 determines device, it is characterised in that described ADC signal
Nursing one's health branch road (41) includes signal condition chip (411) and ADC chips (412), described signal condition chip (411) respectively with
The input connection of metal electrode board and ADC chips (412), output end and the MCU control cores of described ADC chips (412)
(1) connect.
5. a kind of human body electric-physiology parameter according to claim 2 determines device, it is characterised in that described DAC drivings
Device branch road (42) includes DAC chip (421) and driver (422), described driver (422) respectively with DAC chip (421)
Output end and variable connector (46) connection, the input of described DAC chip (421) are connected with MCU control cores (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621273632.6U CN206576865U (en) | 2016-11-25 | 2016-11-25 | A kind of human body electric-physiology parameter determines device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621273632.6U CN206576865U (en) | 2016-11-25 | 2016-11-25 | A kind of human body electric-physiology parameter determines device |
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| Publication Number | Publication Date |
|---|---|
| CN206576865U true CN206576865U (en) | 2017-10-24 |
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|---|---|---|---|
| CN201621273632.6U Active CN206576865U (en) | 2016-11-25 | 2016-11-25 | A kind of human body electric-physiology parameter determines device |
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| Country | Link |
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| CN (1) | CN206576865U (en) |
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2016
- 2016-11-25 CN CN201621273632.6U patent/CN206576865U/en active Active
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