CN105288759B - The electric breast pump of pressure feedback control is carried out based on pliable pressure sensor - Google Patents
The electric breast pump of pressure feedback control is carried out based on pliable pressure sensor Download PDFInfo
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- CN105288759B CN105288759B CN201510672651.XA CN201510672651A CN105288759B CN 105288759 B CN105288759 B CN 105288759B CN 201510672651 A CN201510672651 A CN 201510672651A CN 105288759 B CN105288759 B CN 105288759B
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- pressure
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- microcontroller
- piezoelectric film
- vavuum pump
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/06—Milking pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1007—Breast; mammary
Abstract
The present invention relates to a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor, including breastshield, main body, air intake duct, vavuum pump and control main frame, breastshield is connected with main body, main body is connected by air intake duct with vavuum pump, vavuum pump is arranged in control main frame, main body lower end is used to connect reception container, it is additionally provided with piezoelectric film sensor and feedback unit, piezoelectric film sensor is arranged on the inner side of breastshield, feedback unit is arranged on inside control main frame, piezoelectric film sensor is connected with feedback unit, the negative pressure that piezoelectric film sensor detection mammary surface tissue is born, and pass to feedback unit, feedback unit controls the suction size of vavuum pump according to feedback information.Compared with prior art, the pressure that electric breast pump of the present invention can be born with the breast of monitor in real time humalactor user, dynamic regulation humalactor pull of vacuum, it is to avoid injury of breast caused by pull of vacuum is excessive, protect user's udder health.
Description
Technical field
The present invention relates to a kind of electric breast pump, pressure feedback is carried out based on pliable pressure sensor more particularly, to one kind
The electric breast pump of control.
Background technology
Breast-feeding is a kind of internationally recognized healthy lactation mode, and pregnant women is typically all working women, lactation
Limited time, just needs to extrude breast milk by professional equipment and store after breast-feeding is determined.Current internationally recognizable suction
There are virtue pleasure, Philip etc. in Ru Qi manufacturers, and the humalactor that they are produced is divided into power type and type hand.For electric breast pump,
Opened loop control is used, is stimulating lactation stage, using microprocessor control high-frequency PWM ripples so that the negative pressure of vavuum pump becomes
Change frequency is high, and amplitude is small；The newborn stage is being inhaled, low frequency PWM ripples is being controlled using controller so that the negative pressure variation frequency of vavuum pump
Low, amplitude is big.
But the open defect of electric breast pump open-loop design is in voltage jump, electrical fault or maloperation button
In the case of cause to inhale the pressure that the suddenly change of newborn vacuum dynamics is born beyond user's breast tissue, cause user's mammary gland and breast
Tissue comes to harm；In addition certain customers are due to insensitive to the pain sensation, because when using humalactor, longer-term uses inappropriate
Newborn pressure is inhaled, also causes the mammary gland of breast or breast tissue injured.
The A of Chinese patent CN 103182103 disclose a kind of electric breast pump with negative pressure regulating mechanism, and it includes machine
Body, hood, negative pressure generating mechanism, negative pressure regulating mechanism and pressure display organ, and by flexible pipe and negative pressure generating mechanism phase
Xi Rujiru mechanisms even.Negative pressure generating mechanism includes stepper motor and cylinder.Negative pressure regulating mechanism includes that negative pressure adjusts rubber
Circle, instruction device and receiver, negative pressure regulation elastic tape movable set can radial rotating, the outer end fixed cover of instruction device on cylinder
Negative pressure can be driven to adjust elastic tape on negative pressure regulation elastic tape to rotate, receiver is nested in the interior and cylinder between of instruction device
And be fixedly connected with cylinder.By selecting stepper motor, negative pressure regulating mechanism is set, stabilization negative pressure can be generated, by stepping
Motor control piston frequency, more presses close to baby and sucks frequency, improves comfort level when inhaling breast；Pressure display organ can allow to be made
User more intuitively adjusts the size of negative pressure, but above-mentioned feedback device adjusts cylinder suction size using stepping cylinder,
Cause to react not sensitive enough, accuracy is poor, additionally, the patent electric breast pump sets complex.
The content of the invention
The purpose of the present invention is exactly to provide a kind of based on pliable pressure for the defect for overcoming above-mentioned prior art to exist
Sensor carries out the electric breast pump of pressure feedback control.
Body surface organization according to human body can be by Hooke's law approximate representation it is assumed that setting institute by the deformation change that external force is produced
(S is the surface area of detected body surface organization's part in compression, h to the deformation quantity X=S*h that the body surface organization of detection produces when being pressurized
It is that body surface organization is pressurized the deformational displacement for producing) relation between produced deformation pressure P can be approximated to be P=K*X, its
Middle K is the deformation coefficient of body surface organization, if K0It is the deformation coefficient value of breast tissue, the value can be measured by experiment.Therefore,
In the h of corresponding deformational displacement interval, federation one deformation pressure P of correspondence, because the volume and deformational displacement h of breast tissue are
Limited, when the pressure P that humalactor applies is excessive so that K=P/ (S*h) is increased above the deformation coefficient value K of breast tissue0
When be just possible to damage mammary gland.
For the mammary gland injury for overcoming existing electric breast pump open-loop design to be likely to result in, passed present invention introduces pliable pressure
Sensor, the negative pressure born to mammary surface tissue by the pliable pressure sensor carries out real-time detection feedback, and to inhaling breast
The negative pressure of device carries out closed-loop control in real time, prevent opened loop control exist because plant failure or voltage pulsation build-up of pressure are out of control
And then to the problem that mammary gland is damaged, the maximum vacuum pressure of humalactor is controlled in the scope of safety, it is ensured that user's breast
The safety of gland.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor, including breastshield, main body,
Air intake duct, vavuum pump and control main frame, described breastshield are connected with main body, and described main body passes through air intake duct and vavuum pump
Connection, described vavuum pump is arranged in control main frame, and described main body lower end is used to connect reception container, is additionally provided with piezoelectricity
Thin film sensor and feedback unit, described piezoelectric film sensor are arranged on the inner side of breastshield, described feedback unit
It is arranged on inside control main frame, described piezoelectric film sensor is connected with feedback unit, described piezoelectric film sensor inspection
The negative pressure that mammary surface tissue is born is surveyed, and passes to feedback unit, feedback unit controls vavuum pump according to feedback information
Suction size.
Described feedback unit includes charge amplifier, low pass filter, proportional amplifier and microcontroller, described pressure
Two electrodes of conductive film sensor by wire successively with charge amplifier, low pass filter, proportional amplifier and microcontroller
Connection, described microcontroller is also connected with vavuum pump, and described vavuum pump produces negative pressure, piezoelectric film sensor detection breast
The negative pressure that body surface organization is born, and voltage output is produced, electric signal sequence is transferred to charge amplifier, low pass filter, ratio
Example amplifier and microcontroller, charge amplifier are amplified to signal, due to inhaling the frequency of breast operation close to 1Hz, therefore adopt
LPF is carried out to signal with low pass filter, then proportional amplifier signal is carried out it is scaling after, be conveyed to micro-control
Device processed, after microcontroller carries out nonlinear calibration correction to signal, the negative pressure that vavuum pump is produced is defeated with piezoelectric film sensor
The voltage proportional relation of correspondence for going out, the voltage exported according to piezoelectric film sensor is that can determine whether that the negative pressure that vavuum pump is produced is
It is no more than threshold value, dynamic regulation output voltage dutycycle accordingly, so as to automatically adjust the vacuum magnitude of vavuum pump generation.Inhaling breast
During, the pressure change between microcontroller monitor in real time breast and breastshield, when pressure is excessive, microcontroller reduction
Dutycycle, dynamic reduces the pull of vacuum of vavuum pump, the max-thresholds for making it that pressure is born not over breast.
Wherein wire binds together with air intake duct.
1) breast bears the on-line identification of Pressure Dynamic Model：
Described microcontroller changes dynamic mathematical models, i.e. P (u) (k)=Σ a built with corresponding breast compressioniP
(u)(k-i)+ΣbjU (k-j),
The control voltage signal that wherein u is given for microcontroller, dimension is volt, and k is the sampling time, and unit is millisecond, P
It is the pressure that breast bears, dimension is Pascal, and P can in real time be measured by pliable pressure sensor, and Σ represents summation operation, aiWith
bjIt is weight coefficient, i and j is respectively weight coefficient aiAnd bjSequence number index.
When starting to inhale breast, send one group by microprocessor control vavuum pump and sound out control voltage at random so that breast holds
By the negative pressure pressure of change at random, its surge pressure Pm<P0, P0The breast that makes for being obtained by a large amount of statistical tests produces deformation
Safe pressure average value, the pressure measured according to this group and control voltage, microcontroller distinguished using least square method of recursion
Know the weight coefficient a in dynamic mathematical modelsiAnd bj。
2) breast inhales automatically generating for newborn negative pressure given curve
Described microcontroller built with various waveform patterns for inhaling newborn negative pressure variations, including sine wave, luffing sine wave,
Become frequency sine-wave, frequency conversion and luffing sine wave, user is according to P0The constraint of upper pressure limit, may be selected any one waveform pattern, P0I.e.
The breast that makes obtained by a large amount of statistical tests produces the average value of the safe pressure of deformation, and microcontroller is according to customer selecting
Waveform pattern and generate the newborn negative pressure variation given curve of suction, and control vavuum pump to provide negative according to newborn negative pressure variation given curve is inhaled
Pressure.
3) it is automatic to inhale newborn negative pressure feedback control
The breast that described microcontroller is measured in real time according to piezoelectric film sensor bears pressure P and becomes with newborn negative pressure is inhaled
Change given curve given negative pressure P not in the same timer, calculate output voltage values u (k) of microcontroller, wherein α in real time as the following formula
>0, α is the coefficient of regulation control stability：
U (k)=(Pr(k+1)-ΣaiP(u)(k-i+1)+Σj≠1bju(k-j+1))b1/(b1 2+α)
The control voltage signal that wherein u is given for microcontroller, dimension is volt, and k is the sampling time, and unit is millisecond, P
It is the pressure that breast bears, dimension is Pascal, and Σ represents summation operation, aiAnd bjIt is weight coefficient, i and j is respectively weighting system
Number aiAnd bjSequence number index.
4) special circumstances and failure are automatically processed
When breast is inhaled, the pressure change between microcontroller monitor in real time breast and breastshield, when pressure is excessive, i.e.,
P>P0Or P=P0When, microcontroller can reduce the dutycycle of PWM ripples, and dynamic reduces pull of vacuum, it is held not over breast
The threshold value P being stressed0；If pitched between breast and humalactor shield, now pressure can be less than the normal threshold value P for inhaling breasts, place
Newborn pattern is inhaled in poor efficiency, microcontroller meeting alarm user retightens humalactor.Cause when vavuum pump breaks down
Negative pressure pressure exceedes threshold value P0And the control of microcontroller it is invalid when, microcontroller will automatically cut off vacuum-pump power supply, with protect
The mammary gland of user preserves from.
Described piezoelectric film sensor outside is close to breastshield inner side, and described piezoelectric film sensor inner side sets
There is the silica gel for being contacted with mammary surface, protected with to breast by setting silica gel.
Described piezoelectric film sensor is PVDF piezoelectric film sensors, and it is a kind of flexible sensor, Neng Goushi
When monitoring breastshield and user's breast between pressure change.
It is used to connect in described main body to receive and counterflow-preventing component is provided with container, effect is to prevent from causing breast due to error
Juice reverse back stream main frame, causes motor or microcontroller to be damaged.
Described control main frame is provided with the manual regulating key for carrying out manual regulation to vavuum pump suction.When automatic
Failure of adjustment needs emergency manual to adjust to make, and manually regulating key adjusts the suction size of vavuum pump.
Alarm is additionally provided with described control main frame, when the pressure of piezoelectric film sensor detection is less than setting pressure
Value, i.e., when less than minimum threshold, pitch between breast and humalactor shield, is now in the newborn pattern of inefficient suction, alarm report
Alert prompting user is adjusted.
Compared with prior art, the present invention has advantages below and beneficial effect：
1st, the present invention is arranged on humalactor using pliable pressure sensor and breast is affixed part, and the mammary gland to breast is being inhaled
The vacuum magnitude that newborn process is born carries out real-time detection, and according to the pressure value of measurement, Real-time Feedback is carried out to inhaling newborn pressure
Control, it is ensured that the pressure that mammary gland and breast tissue can bear is in the range of secure threshold, if once occurring being filled because of humalactor
Putting the factors such as failure, voltage pulsation causes pressure to increase, and reaches secure threshold, pressure discharge operations is just carried out automatically, it is ensured that user's
Mammary gland and breast tissue preserve from.
2nd, apparatus of the present invention are provided with multiple waveforms pattern in the microcontroller, and user can voluntarily select as needed.
3rd, manual regulating key is provided with control main frame, manually the suction of vavuum pump can be adjusted by regulating key
Size, manual regulating key is set to apparatus of the present invention there is provided dual safety guarantee.
4th, the pressure that this electric breast pump can be born with the breast of monitor in real time humalactor user, dynamic regulation inhales breast
Device pull of vacuum, it is to avoid injury of breast caused by pull of vacuum is excessive, protects user's udder health.
5th, apparatus of the present invention simple structure, it is easy to accomplish, prevent due to right caused by the failure during humalactor use
The injury of user's breast.
Brief description of the drawings
Fig. 1 is electric breast pump schematic diagram of the present invention；
Fig. 2 is the structure principle chart of feedback unit.
In figure, 1 is piezoelectric film sensor, and 2 is silica gel, and 3 is breastshield, and 4 is main body, and 5 to receive container, and 6 is suction
Tracheae, 7 is wire, and 8 is vavuum pump, and 9 is control main frame, and 10 is manual regulating key, and 11 is counterflow-preventing component, and 12 put for electric charge
Big device, 13 is low pass filter, and 14 is proportional amplifier, and 15 is microcontroller.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in figure 1, a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor, including inhale breast
Shield 3, main body 4, air intake duct 6, vavuum pump 8 and control main frame 9, breastshield 3 are connected with main body 4, and main body 4 passes through air intake duct 6
It is connected with vavuum pump 8, vavuum pump 8 is arranged in control main frame 9, the lower end of main body 4 is used to connect reception container 5, is additionally provided with pressure
Conductive film sensor 1 and feedback unit, piezoelectric film sensor 1 are arranged on the inner side of breastshield 3, and feedback unit is arranged on control
Inside main frame processed 9, piezoelectric film sensor 1 is connected with feedback unit, and the detection mammary surface tissue of piezoelectric film sensor 1 is held
The negative pressure received, and feedback unit is passed to, feedback unit controls the suction size of vavuum pump 8 according to feedback information.
The outside of piezoelectric film sensor 1 is close to the inner side of breastshield 3, the inner side of piezoelectric film sensor 1 be provided with for
The silica gel 2 of mammary surface contact, is protected by setting silica gel 2 with to breast.
Piezoelectric film sensor 1 is PVDF piezoelectric film sensors, and it is a kind of flexible sensor, being capable of monitor in real time
Pressure change between breastshield and user's breast.
It is used to connect in main body 4 to receive and counterflow-preventing component 11 is provided with container 5, effect is to prevent from causing milk due to error
Reverse back stream main frame, causes motor or microcontroller to be damaged.
Control main frame 9 is provided with the manual regulating key 10 for carrying out manual regulation to the suction of vavuum pump 8.When automatic tune
Section failure needs emergency manual to adjust to make, and manually regulating key 10 adjusts the suction size of vavuum pump 8.
Alarm is additionally provided with control main frame 9, when the pressure of the detection of piezoelectric film sensor 1 is less than setup pressure value, i.e.,
During less than minimum threshold, pitched between breast and humalactor shield, be now in the newborn pattern of inefficient suction, alarm equipment alarm prompting
User is adjusted.
With reference to Fig. 2, feedback unit includes charge amplifier 12, low pass filter 13, proportional amplifier 14 and microcontroller
15,1 two electrodes of piezoelectric film sensor by wire 7 successively with charge amplifier 12, low pass filter 13, proportional amplifier
14 and microcontroller 15 connect, microcontroller 15 is also connected with vavuum pump 8, vavuum pump 8 produce negative pressure, piezoelectric film sensor 1
The negative pressure that detection mammary surface tissue is born, and voltage output is produced, electric signal sequence is transferred to charge amplifier 12, low pass
Wave filter 13, proportional amplifier 14 and microcontroller 15, charge amplifier 12 are amplified to signal, due to inhaling the frequency of breast operation
Rate carries out LPF using low pass filter 13 close to 1Hz to signal, and then proportional amplifier 14 compares signal
After example is amplified, microcontroller 15 is conveyed to, after microcontroller 15 carries out nonlinear calibration correction to signal, vavuum pump 8 is produced
Negative pressure proportional relation corresponding with the voltage that piezoelectric film sensor 1 is exported, according to piezoelectric film sensor 1 export voltage
Can determine whether whether the negative pressure that vavuum pump 8 is produced exceedes threshold value, accordingly dynamic regulation output voltage dutycycle, so as to automatically adjust
The vacuum magnitude that vavuum pump 8 is produced.During breast is inhaled, the pressure between the monitor in real time breast of microcontroller 15 and breastshield
Change, when pressure is excessive, microcontroller reduction dutycycle, dynamic reduces the pull of vacuum of vavuum pump 8, makes it not over breast
Bear the max-thresholds of pressure in room.
In the present embodiment, wire 7 binds together with air intake duct 6.
Humalactor in the present embodiment possesses following functions：
1st, breast bears the on-line identification of Pressure Dynamic Model：
Microcontroller 15 changes dynamic mathematical models, i.e. P (u) (k)=Σ a built with corresponding breast compressioniP(u)(k-
i)+ΣbjU (k-j),
The control voltage signal that wherein u is given for microcontroller, dimension is volt, and k is the sampling time, and unit is millisecond, P
It is the pressure that breast bears, dimension is Pascal, and P can in real time be measured by pliable pressure sensor, and Σ represents summation operation, aiWith
bjIt is weight coefficient, i and j is respectively weight coefficient aiAnd bjSequence number index.
When starting to inhale breast, control vavuum pump 8 to send one group by microcontroller 15 and sound out control voltage at random so that breast
Bear the negative pressure pressure of change at random, its surge pressure Pm<P0, P0The breast that makes for being obtained by a large amount of statistical tests produces shape
The average value of the safe pressure of change, the pressure measured according to this group and control voltage, microcontroller 15 use recursive least-squares
Method picks out the parameter a in dynamic mathematical modelsiAnd bj。
2nd, breast inhales automatically generating for newborn negative pressure given curve
Microcontroller 15 is built with various waveform patterns for inhaling newborn negative pressure variation, including sine wave, luffing sine wave, frequency conversion
Sine wave, frequency conversion and luffing sine wave, user is according to P0The constraint of upper pressure limit, may be selected any one waveform pattern, P0Pass through
What a large amount of statistical tests were obtained makes breast produce the average value of the safe pressure of deformation, ripple of the microcontroller 15 according to customer selecting
Shape pattern and generate the newborn negative pressure variation given curve of suction, and control vavuum pump 8 to provide negative according to newborn negative pressure variation given curve is inhaled
Pressure.
3rd, it is automatic to inhale newborn negative pressure feedback control
Microcontroller 15 bears pressure P and inhales newborn negative pressure variation according to the breast that piezoelectric film sensor 1 is measured in real time
Given curve given negative pressure P not in the same timer, calculate output voltage values u (k) of microcontroller (15) in real time as the following formula, its
Middle α>0, α is the coefficient of regulation control stability：
U (k)=(Pr(k+1)-ΣaiP(u)(k-i+1)+Σj≠1bju(k-j+1))b1/(b1 2+α)
The control voltage signal that wherein u is given for microcontroller, dimension is volt, and k is the sampling time, and unit is millisecond, P
It is the pressure that breast bears, dimension is Pascal, and Σ represents summation operation, aiAnd bjIt is weight coefficient, i and j is respectively weighting system
Number aiAnd bjSequence number index.
4th, special circumstances and failure are automatically processed
When breast is inhaled, the pressure change between the monitor in real time breast of microcontroller 15 and breastshield, when pressure is excessive,
That is P>P0Or P=P0When, microcontroller can reduce the dutycycle of PWM ripples, and dynamic reduces pull of vacuum, makes it not over breast
Bear the threshold value P of pressure0；If pitched between breast and humalactor shield, now pressure can be less than the normal threshold value P for inhaling breasts,
Newborn pattern is inhaled in poor efficiency, microcontroller meeting alarm user retightens humalactor.Led when vavuum pump breaks down
Negative pressure pressure is caused to exceed threshold value P0And the control of microcontroller it is invalid when, microcontroller will automatically cut off vacuum-pump power supply, with protect
The mammary gland for protecting user preserves from.
The above-mentioned description to embodiment is to be understood that and use invention for ease of those skilled in the art.
Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel announcement of the invention, does not depart from improvement that scope made and modification all should be of the invention
Within protection domain.
Claims (8)
1. a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor, including breastshield (3), main body
(4), air intake duct (6), vavuum pump (8) and control main frame (9), described breastshield (3) are connected with main body (4), described master
Body (4) is connected by air intake duct (6) with vavuum pump (8), and described vavuum pump (8) is arranged in control main frame (9), described master
Body (4) lower end is used to connect reception container (5), it is characterised in that be additionally provided with piezoelectric film sensor (1) and feedback unit,
Described piezoelectric film sensor (1) is arranged on the inner side of breastshield (3), and described feedback unit is arranged on control main frame
(9) internal, described piezoelectric film sensor (1) is connected with feedback unit, described piezoelectric film sensor (1) detection breast
The negative pressure that body surface organization is born, and feedback unit is passed to, feedback unit controls the suction of vavuum pump (8) according to feedback information
Size；
Described feedback unit includes charge amplifier (12), low pass filter (13), proportional amplifier (14) and microcontroller
(15), described (1) two electrode of piezoelectric film sensor by wire (7) successively with charge amplifier (12), LPF
Device (13), proportional amplifier (14) and microcontroller (15) connection, described microcontroller (15) are also connected with vavuum pump (8),
Described vavuum pump (8) produces negative pressure, and piezoelectric film sensor (1) detects the negative pressure that mammary surface tissue is born, and
Produce electric signal output, electric signal sequence be transferred to charge amplifier (12), low pass filter (13), proportional amplifier (14) and
Microcontroller (15), the voltage pair that the negative pressure that microcontroller (15) produces vavuum pump (8) is exported with piezoelectric film sensor (1)
Answer proportional relation, and the size of vavuum pump (8) suction is adjusted according to the voltage that piezoelectric film sensor (1) is exported；
Described microcontroller (15) changes dynamic mathematical models, i.e. P (u) (k)=Σ a built with corresponding breast compressioniP(u)
(k-i)+ΣbjU (k-j),
The control voltage signal that wherein u is given for microcontroller, dimension is volt, and k is the sampling time, and unit is millisecond, and P is breast
The pressure that room bears, dimension is Pascal, and Σ represents summation operation, aiAnd bjIt is weight coefficient, i and j is respectively weight coefficient ai
And bjSequence number index,
When starting to inhale breast, control vavuum pump (8) to send one group by microcontroller (15) and sound out control voltage at random so that breast
Bear the negative pressure pressure of change at random, its surge pressure Pm<P0, P0The breast that makes for being obtained by a large amount of statistical tests produces shape
The average value of the safe pressure of change, the pressure measured according to this group and control voltage, microcontroller (15) use a recursion most young waiter in a wineshop or an inn
Multiplication picks out the parameter a in dynamic mathematical modelsiAnd bj。
2. a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor according to claim 1,
Characterized in that, described microcontroller (15) is built with various waveform patterns for inhaling newborn negative pressure variation, including sine wave, luffing
Sine wave, change frequency sine-wave, frequency conversion and luffing sine wave, user is according to P0The constraint of upper pressure limit, may be selected any one waveform
Pattern, P0The breast that makes for being obtained by a large amount of statistical tests produces the average value of the safe pressure of deformation, microcontroller (15)
The newborn negative pressure variation given curve of suction is generated according to the waveform pattern of customer selecting, and controls vavuum pump (8) according to the newborn negative pressure of suction
Change given curve provides negative pressure.
3. a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor according to claim 2,
Characterized in that, described microcontroller (15) according to the breast that piezoelectric film sensor (1) is measured in real time bear pressure P with
Inhale newborn negative pressure variation given curve given negative pressure P not in the same timer, calculate the output electricity of microcontroller (15) in real time as the following formula
Pressure value u (k), wherein α>0, α is the coefficient of regulation control stability：
U (k)=(Pr(k+1)-ΣaiP(u)(k-i+1)+Σj≠1bju(k-j+1))b1/(b1 2+α)
The control voltage signal that wherein u is given for microcontroller, dimension is volt, and k is the sampling time, and unit is millisecond, and P is breast
The pressure that room bears, dimension is Pascal, and Σ represents summation operation, aiAnd bjIt is weight coefficient, i and j is respectively weight coefficient ai
And bjSequence number index.
4. a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor according to claim 1,
Characterized in that, described piezoelectric film sensor (1) outside is close to breastshield (3) inner side, described piezoelectric membrane is passed
Sensor (1) inner side is provided with the silica gel (2) for being contacted with mammary surface.
5. a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor according to claim 1,
Characterized in that, described piezoelectric film sensor (1) is PVDF piezoelectric film sensors.
6. a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor according to claim 1,
Counterflow-preventing component (11) is provided with characterized in that, being used for connection in described main body (4) and receiving container (5) place.
7. a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor according to claim 1,
Characterized in that, described control main frame (9) be provided with for vavuum pump (8) suction is carried out the manual regulation of manual regulation by
Key (10).
8. a kind of electric breast pump that pressure feedback control is carried out based on pliable pressure sensor according to claim 1,
Characterized in that, alarm is additionally provided with described control main frame (9), when the pressure of piezoelectric film sensor (1) detection is less than
During setup pressure value, alarm equipment alarm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672651.XA CN105288759B (en) | 2015-10-16 | 2015-10-16 | The electric breast pump of pressure feedback control is carried out based on pliable pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510672651.XA CN105288759B (en) | 2015-10-16 | 2015-10-16 | The electric breast pump of pressure feedback control is carried out based on pliable pressure sensor |
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| CN105288759B true CN105288759B (en) | 2017-06-23 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2016421331B2 (en) * | 2016-09-02 | 2023-02-23 | Medela Holding Ag | Breast shield |
| DE202018006806U1 (en) | 2017-06-15 | 2023-01-30 | Chiaro Technology Limited | breast pump system |
| CN108387369B (en) * | 2018-02-07 | 2020-02-21 | 东莞市简爱母婴用品有限公司 | Breast pump testing device and method |
| CN108355182B (en) * | 2018-04-12 | 2020-11-17 | 马丽 | Breast pump and breast pump set |
| EP3622977A1 (en) * | 2018-09-12 | 2020-03-18 | Koninklijke Philips N.V. | Breast pump device |
| CA3132811A1 (en) * | 2019-03-08 | 2020-09-17 | Willow Innovations, Inc. | Fluid and air volume measurement system for a breast pump assembly |
| GB202004395D0 (en) | 2020-03-26 | 2020-05-13 | Chiaro Technology Ltd | Lima |
| CN112697417A (en) * | 2020-12-28 | 2021-04-23 | 全鼎电子(苏州)有限公司 | Suction and frequency test system of breast pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6383163B1 (en) * | 1998-05-04 | 2002-05-07 | Patricia Ann Kelly | Electric breast pump designed to simulate infant suckling |
| CN201350243Y (en) * | 2007-12-21 | 2009-11-25 | 皇家飞利浦电子股份有限公司 | Breast pump for milking from breast |
| CN102100558A (en) * | 2011-02-23 | 2011-06-22 | 北京大学深圳研究生院 | Wireless respiration monitoring device |
| CN102370496A (en) * | 2011-09-09 | 2012-03-14 | 北京大学深圳研究生院 | Fetal heart sound monitoring instrument based on piezoelectric thin-film sensor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2462932Y (en) * | 2001-01-12 | 2001-12-05 | 中国人民解放军南京军区南京总医院 | Full-automatic milking pump |
| KR20100103152A (en) * | 2009-03-13 | 2010-09-27 | 김연준 | Breast milker |
-
2015
- 2015-10-16 CN CN201510672651.XA patent/CN105288759B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6383163B1 (en) * | 1998-05-04 | 2002-05-07 | Patricia Ann Kelly | Electric breast pump designed to simulate infant suckling |
| CN201350243Y (en) * | 2007-12-21 | 2009-11-25 | 皇家飞利浦电子股份有限公司 | Breast pump for milking from breast |
| CN102100558A (en) * | 2011-02-23 | 2011-06-22 | 北京大学深圳研究生院 | Wireless respiration monitoring device |
| CN102370496A (en) * | 2011-09-09 | 2012-03-14 | 北京大学深圳研究生院 | Fetal heart sound monitoring instrument based on piezoelectric thin-film sensor |
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