CN209391932U - A kind of intelligence switching multichannel fetal electrocardiogram collection system - Google Patents
A kind of intelligence switching multichannel fetal electrocardiogram collection system Download PDFInfo
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- CN209391932U CN209391932U CN201821335941.0U CN201821335941U CN209391932U CN 209391932 U CN209391932 U CN 209391932U CN 201821335941 U CN201821335941 U CN 201821335941U CN 209391932 U CN209391932 U CN 209391932U
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- 230000001605 fetal effect Effects 0.000 title claims abstract description 36
- 230000003750 conditioning effect Effects 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 210000001015 abdomen Anatomy 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000005381 potential energy Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 210000003754 fetus Anatomy 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000003187 abdominal effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 210000004381 amniotic fluid Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 210000003679 cervix uteri Anatomy 0.000 description 1
- 230000007831 electrophysiology Effects 0.000 description 1
- 238000002001 electrophysiology Methods 0.000 description 1
- 210000002219 extraembryonic membrane Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 210000004379 membrane Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035935 pregnancy Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 210000004291 uterus Anatomy 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The utility model discloses a kind of intelligence switching multichannel fetal electrocardiogram collection systems, including multiple acquisition channels and conditioning channel, each acquisition channel includes connecting wire and electrode slice, each conditioning channel includes signal conditioning circuit, one end connection electrode piece of the connecting wire, other end connection switching unit, the switch unit is using every two connecting wire as one group, each group differential transfer to each conditioning channel, each conditioning channel is connected with AD conversion module；The utility model is easy for operation, endangers by the way of passive measurement, without potential energy.
Description
Technical field
The utility model relates to a kind of intelligence switching multichannel fetal electrocardiogram collection systems.
Background technique
The detection method for obtaining fetal electrocardiogram at present is generally divided into direct method and two kinds of indirect method.Direct method is exactly that will survey
It measures electrode Via vagina and is placed in uterus uterine cavity, directly contact the body of fetus.Due to being directly to measure, this method is not by the parent heart
The interference of electricity can get clearly Fetal ECG waveform.The disadvantage is that can only during labor, dilatation of cervix, fetal membrane oneself it is broken under conditions of
It can measure, and have the danger for causing infection, cannot function as the Fetal ECG monitoring method in entire pregnancy period, limitation is big.
Indirect method is the abdomen body-surface that detection electrode is placed in pregnant woman, and the cardiac electrophysiology activity of fetus reaches pregnant woman by amniotic fluid membrane cavity
External electrode.The method is simple to operate, does not all injure to pregnant woman and fetus, measurement can be repeated.
The Fetal ECG signal obtained by pregnant woman's external electrode includes Hz noise, myoelectricity interference, parent electrocardio letter
Number, Fetal ECG signal and other various interference signals, wherein the amplitude of effective Fetal ECG signal is very faint, only
The rank of 0.01mV~0.1mV, and parent electrocardio signal amplitude is generally in 0.1mV~5mV, other myoelectricity interferences and Hz noise
Amplitude generally also in the range of 0.01mV~0.5mV, it is difficult to obtain pure Fetal ECG signal from pregnant woman's body surface.
Although effective Fetal ECG signal can be extracted from mixed signal using the scheme of a variety of Digital Signal Processing,
But if the interference signal mixed in the signal that system is extracted is too many, the signal-to-noise ratio of signal is too poor, undoubtedly will affect rear issue
Word signal processing leads to not isolate effective Fetal ECG signal.
Current fetal electrocardiogram collection system and scheme are fixed acquisition channel or acquisition position mostly, because fetus is in mother
Intracorporal position is not fixed, and the position of heart of fetus and the activity vector direction of Fetal ECG signal are also not fixed, and use is this
The signal that mode obtains has biggish limitation, is easy by influence of noise.
Utility model content
The utility model to solve the above-mentioned problems, proposes a kind of intelligence switching multichannel fetal electrocardiogram collection system,
The utility model is fixed using external electrode position, and the mode for flexibly switching acquisition channel carries out the acquisition of Fetal ECG signal.
To achieve the goals above, the utility model adopts the following technical solution:
Intelligence switching multichannel fetal electrocardiogram collection system, including multiple acquisition channels and conditioning channel, each acquisition are logical
Road includes connecting wire and electrode slice, and each conditioning channel includes signal conditioning circuit, and one end of the connecting wire connects electricity
Pole piece, other end connection switching unit, the switch unit is using every two connecting wire as one group, and each group differential transfer is to each
A conditioning channel, each conditioning channel are connected with AD conversion module.
Further, the input signal in the conditioning channel is that the electrode slice of two connecting wires connection of setting acquires
Body surface signal.
Further, the output signal in the conditioning channel is transmitted to the AD conversion module in a differential manner.
Further, the acquisition channel includes at least four, and the conditioning channel includes at least three.
Further, the electrode slice includes at least multiple acquisition electrode pieces and a feedback electrode piece, the acquisition electricity
It is connected two-by-two between pole piece.
Further, the acquisition electrode piece includes at least four, with the cross abdomen that person under test is arranged in, each adopts
Current collection pole piece is located at cross endpoint.
Further, right lower quadrant of the feedback electrode piece in the abdomen that person under test is arranged in.
Further, input signal is fed back to feedback electrode piece by the AD conversion module.
Further, the switch unit is connect with controller, passes through control switch unit switched conductive various combination
Connecting wire acquires the electric signal of different directions and channel.
Compared with prior art, the utility model has the following beneficial effects:
1, the utility model operates with simply, only need to be in the abdomen adhesive electrode piece of pregnant woman, and fixed electrode film is in pregnant woman
The paste position of abdomen does not need to re-paste electrode slice, and the switching of physical channel can be realized, and acquires different directions and channel
Electric signal；
2, the utility model is easy for operation, endangers by the way of passive measurement, without potential energy.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the structural schematic diagram of multichannel collecting system；
Fig. 2 is a kind of electrode slice set-up mode schematic diagram of embodiment；
Fig. 3 is that a kind of electrode slice of embodiment connects the schematic diagram to form multichannel；
Fig. 4 is the structural schematic diagram of the multichannel collecting system of the embodiment of Fig. 3；
Fig. 5 is that the electrode slice of another embodiment connects the schematic diagram to form multichannel；
Fig. 6 is the structural schematic diagram of the multichannel collecting system of the embodiment of Fig. 5；
Specific embodiment:
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In the present invention, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as " side ", "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate chatting
The relative for stating each component of the utility model or component structure relationship and determination, not refer in particular in the utility model either component or
Element should not be understood as limiting the present invention.
In the utility model, term such as " affixed ", " connected ", " connection " be shall be understood in a broad sense, and expression can be fixation
Connection, is also possible to be integrally connected or be detachably connected；It can be directly connected, the indirect phase of intermediary can also be passed through
Even.Related scientific research or technical staff for this field can determine as the case may be above-mentioned term in the present invention
Concrete meaning, should not be understood as limiting the present invention.
As described in the background art, current fetal electrocardiogram collection system and scheme be mostly fixed acquisition channel or
Acquisition position, because fetus is not fixed in the intracorporal position of mother, the position of heart of fetus and the activity vector of Fetal ECG signal
Direction is also not fixed, and the signal obtained in this way has biggish limitation, is easy by influence of noise.
The utility model is fixed using pregnant woman's external electrode position, and the mode for flexibly switching acquisition channel carries out Fetal ECG
The acquisition of signal.Her abdominal body surface adhesive electrode piece, system start to carry out the threeway of Y direction, 45 ° of directions and 135 ° of directions
The Fetal ECG signal acquisition in road, and be sent into digital information processing system and carry out the separation of mother/Fetal ECG signal and fetus
The analysis of electrocardiosignal；If signal quality is bad, controls acquisition system and switch over as X-direction, Y direction and 135 ° of sides
To triple channel acquisition, to adapt to different fetus position and heart of fetus position.Parent abdomen feedback electricity is added in simultaneity factor
The signal synthesis in each channel is fed back to mother's body surface by pole, is improved system common-mode and is inhibited ratio.Operator can also be according to each of display
Channel signal, flexible manual switching acquisition mode, selects preferable signal sampling channel.
Fetal ECG signal acquisition and control system block diagram are as shown in Figure 1.Mother's abdomen posts 5 electrode slices, and via
Conducting wire is connected to signal acquiring system, wherein 4 conducting wires (conducting wire A/B/C/D) are used as signal acquisition lead, 1 lead
Line (conducting wire N) feeds back lead as signal.Digital Logic control unit is using high-performance embedded MCU or dsp chip etc., hair
Out control signal control lead switch unit respectively by 4 signal acquisition leads obtain using two as one group, with difference
Form is sent into 3 signal condition channels, and 3 channel signals are sent into high-precision AD converting unit and are AD converted after difference, and lead to
It crosses digital interface and digital signal is transmitted to digital logic unit.
Electrode slice is as shown in Figure 2 in the bonding method of her abdominal.Electrode A/the B/C/D for being used as signal acquisition pastes respectively
In the upper and lower, left and right position of her abdominal, the right lower quadrant of her abdominal is pasted onto as the electrode N of feedback.
When being acquired, first acquisition Y direction (between A electrode and D electrode), 45 ° of directions (C electrode and D electrode it
Between) and 135 ° of directions (between B electrode and D electrode) triple channel Fetal ECG signal.The letter of body surface sense and inside
Number connection is as shown in Figure 3.Form acquisition system shown in Fig. 4.
Signal quality such as the above interchannel is undesirable, then carries out lead by digital logic unit control lead switching module
The switching of line obtains Y direction (between A electrode and D electrode), X-direction (between B electrode and C electrode) and 45 ° of direction (A electricity
Between pole and C electrode) triple channel Fetal ECG signal.The connection of the signal of body surface sense and inside is as shown in Figure 5.Shape
At acquisition system shown in fig. 6.
Certainly, in other embodiments, the switching of the above acquisition channel can also be realized by hand.
To sum up, fixed electrode film does not need to re-paste electrode slice, physics can be realized in the paste position of her abdominal
The switching in channel acquires the electric signal of different directions and channel.To the fetus of any position, consider its electric signal vector ring not
Projection on equidirectional, above several acquisition directions, substantially covers comprehensive projection, can adopt good quality Fetal ECG
Signal.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but it is not practical new to this
The limitation of type protection scope, those skilled in the art should understand that, based on the technical solution of the present invention, ability
Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (9)
1. intelligence switching multichannel fetal electrocardiogram collection system, it is characterized in that: including multiple acquisition channels and conditioning channel, each
Acquisition channel includes connecting wire and electrode slice, and each conditioning channel includes signal conditioning circuit, one end of the connecting wire
Connection electrode piece, other end connection switching unit, using every two connecting wire as one group, each group difference passes the switch unit
Each conditioning channel is transported to, each conditioning channel is connected with AD conversion module.
2. intelligence switching multichannel fetal electrocardiogram collection system as described in claim 1, it is characterized in that: the conditioning channel
Input signal is the body surface signal of the electrode slice acquisition of two connecting wires connection of setting.
3. intelligence switching multichannel fetal electrocardiogram collection system as described in claim 1, it is characterized in that: the conditioning channel
Output signal is transmitted to the AD conversion module in a differential manner.
4. intelligence switching multichannel fetal electrocardiogram collection system as described in claim 1, it is characterized in that: the acquisition channel packet
At least four are included, the conditioning channel includes at least three.
5. intelligence switching multichannel fetal electrocardiogram collection system as described in claim 1, it is characterized in that: the electrode slice includes
At least multiple acquisition electrode pieces and a feedback electrode piece are connected two-by-two between the acquisition electrode piece.
6. intelligence switching multichannel fetal electrocardiogram collection system as claimed in claim 5, it is characterized in that: the acquisition electrode piece
Including at least four, with the cross abdomen that person under test is arranged in, each acquisition electrode piece is located at cross endpoint.
7. intelligence switching multichannel fetal electrocardiogram collection system as claimed in claim 5, it is characterized in that: the feedback electrode piece
In the right lower quadrant for the abdomen that person under test is arranged in.
8. intelligence switching multichannel fetal electrocardiogram collection system as described in claim 1, it is characterized in that: the AD conversion module
Input signal is fed back into feedback electrode piece.
9. intelligence switching multichannel fetal electrocardiogram collection system as described in claim 1, it is characterized in that: the switch unit with
Controller connection acquires the electricity of different directions and channel by controlling the connecting wire of switch unit switched conductive various combination
Signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821335941.0U CN209391932U (en) | 2018-08-17 | 2018-08-17 | A kind of intelligence switching multichannel fetal electrocardiogram collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821335941.0U CN209391932U (en) | 2018-08-17 | 2018-08-17 | A kind of intelligence switching multichannel fetal electrocardiogram collection system |
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| Publication Number | Publication Date |
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| CN209391932U true CN209391932U (en) | 2019-09-17 |
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|---|---|---|---|
| CN201821335941.0U Active CN209391932U (en) | 2018-08-17 | 2018-08-17 | A kind of intelligence switching multichannel fetal electrocardiogram collection system |
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2018
- 2018-08-17 CN CN201821335941.0U patent/CN209391932U/en active Active
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