CN105288759A - Electric breast pump for pressure feedback control based on flexible pressure sensor - Google Patents
Electric breast pump for pressure feedback control based on flexible pressure sensor Download PDFInfo
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- CN105288759A CN105288759A CN201510672651.XA CN201510672651A CN105288759A CN 105288759 A CN105288759 A CN 105288759A CN 201510672651 A CN201510672651 A CN 201510672651A CN 105288759 A CN105288759 A CN 105288759A
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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
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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
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1007—Breast; mammary
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Abstract
The invention relates to an electric breast pump for pressure feedback control based on a flexible pressure sensor. The electric breast pump comprises a breast pump shield, a main body, an air suction tube, a vacuum pump and a control host, and further comprises a piezoelectric film sensor and a feedback unit, wherein the breast pump shield is connected to the main body; the main body is connected to the vacuum pump by virtue of the air suction tube; the vacuum pump is arranged inside the control host; a receiving container is connected to the lower end of the main body; the piezoelectric film sensor is arranged on the inner side of the breast pump shield; the feedback unit is arranged inside the control host; the piezoelectric film sensor is connected to the feedback unit; the piezoelectric film sensor is used for detecting negative pressure born by surface tissues of breasts and for transmitting the negative pressure to the feedback unit; and the feedback unit is used for controlling suction force of the vacuum pump according to feedback information. Compared with the prior art, the electric breast pump disclosed by the invention can monitor pressure on the breasts of a breast pump user in real time and can dynamically regulate the vacuum suction force of the breast pump, so as to avoid breast injury caused by the excessive vacuum suction force and to protect the healthy breasts of the user.
Description
Technical field
The present invention relates to a kind of electric breast pump, especially relate to a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor.
Background technology
Breast feeding is a kind of internationally recognized healthy suckling mode, and pregnant women is all generally working woman, and time of nursing is limited, just needs extrude breast milk by professional equipment and store after decision breast feeding.There are virtue pleasure, Philip etc. in current internationally recognizable humalactor manufacturer, and the humalactor that they are produced is divided into power type and type hand.For electric breast pump, all use opened loop control, at stimulation lactation stage, utilize microprocessor controls altofrequency PWM ripple, make the negative pressure variation frequency of vacuum pump high, amplitude is little; In the suction breast stage, utilize controller to control low frequency PWM ripple, make the negative pressure variation frequency of vacuum pump low, amplitude is large.
But the open defect of electric breast pump open-loop design is the pressure causing the unexpected change of inhaling newborn vacuum dynamics to exceed user's breast tissue bearing when voltage jump, electrical fault or maloperation button, causes user's mammary gland and breast tissue to come to harm; In addition certain customers are due to insensitive to the pain sensation, because of use humalactor time, longer-term uses the newborn pressure of inappropriate suction, also cause the mammary gland of breast or breast tissue injured.
Chinese patent CN103182103A discloses a kind of electric breast pump with negative pressure regulating mechanism, it comprises body, hood, negative pressure generating mechanism, negative pressure regulating mechanism and pressure display organ, and by Xi Rujiru mechanism that flexible pipe is connected with negative pressure generating mechanism.Negative pressure generating mechanism comprises motor and cylinder.Negative pressure regulating mechanism comprises negative pressure and regulates elastic tape, instruction device and receptor, negative pressure regulates elastic tape movable set can radial rotating on cylinder, the outer end of instruction device is fixedly set in negative pressure and regulates on elastic tape negative pressure can be driven to regulate elastic tape to rotate, and receptor is nested in the interior of instruction device and is fixedly connected with cylinder with between cylinder.By selecting motor, negative pressure regulating mechanism being set, stable negative pressure can be generated, by step motor control piston frequency, more press close to baby and suck frequency, improve comfort level when inhaling breast; Pressure display organ can allow user regulate the size of negative pressure more intuitively, but above-mentioned feedback device adopts stepping cylinder to carry out adjusting cylinders suction size, cause reaction sensitive not, accuracy is poor, in addition, this patent electric breast pump arranges comparatively complicated.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor is provided.
Body surface organization according to human body can by the hypothesis of Hooke's law approximate representation by the deformation change that external force produces, if (S is the surface area of detected body surface organization's part in compression to the deformation quantity X=S*h produced during the body surface organization's pressurized detected, h is the deformational displacement that body surface organization pressurized produces) and the deformation pressure P produced between relation can be approximated to be P=K*X, wherein K is the deformation coefficient of body surface organization, if K
0for the deformation coefficient value of breast tissue, this value can record by experiment.Therefore, in the interval h of the deformational displacement of correspondence, an always corresponding deformation pressure P, because the volume of breast tissue and deformational displacement h are limited, when humalactor applied pressure P is excessive, K=P/ (S*h) is increased to be greater than the deformation coefficient value K of breast tissue
0in time, just likely damages mammary gland.
In order to overcome the mammary gland injury that existing electric breast pump open-loop design may cause, the present invention introduces pliable pressure sensor, by this pliable pressure sensor, in real time feedback is detected to the negative pressure that mammary surface tissue bears, and in real time closed loop control is carried out to the negative pressure of humalactor, prevent opened loop control from existing due to plant failure or voltage pulsation build-up of pressure problem out of control and then that damage to mammary gland, the maximum vacuum pressure of humalactor is controlled, in the scope of safety, guarantee the safety of user's mammary gland.
Object of the present invention can be achieved through the following technical solutions:
A kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor, comprise breastshield, main body, suction nozzle, vacuum pump and main control system, described breastshield is connected with main body, described main body is connected with vacuum pump by suction nozzle, described vacuum pump is arranged in main control system, described main body lower end is for connecting receiving vessel, also be provided with piezoelectric film sensor and feedback unit, described piezoelectric film sensor is arranged on the inner side of breastshield, described feedback unit is arranged on main control system inside, described piezoelectric film sensor is connected with feedback unit, described piezoelectric film sensor detects the negative pressure that mammary surface tissue bears, and pass to feedback unit, feedback unit controls the suction size of vacuum pump according to feedback information.
Described feedback unit comprises charge amplifier, low pass filter, proportional amplifier and microcontroller, described piezoelectric film sensor two electrodes by wire successively with charge amplifier, low pass filter, proportional amplifier and microcontroller connect, described microcontroller is also connected with vacuum pump, described vacuum pump produces negative pressure, piezoelectric film sensor detects the negative pressure that mammary surface tissue bears, and produce voltage output, electric signal sequence is transferred to charge amplifier, low pass filter, proportional amplifier and microcontroller, charge amplifier amplifies signal, owing to inhaling the frequency of breast operation close to 1Hz, therefore low pass filter is adopted to carry out low-pass filtering to signal, then after proportional amplifier carries out scale amplifying to signal, flow to microcontroller, after microcontroller carries out nonlinear calibration correction to signal, by the negative pressure proportional relation corresponding to the voltage that piezoelectric film sensor exports that vacuum pump produces, can judge whether the negative pressure that vacuum pump produces exceedes threshold value according to the voltage that piezoelectric film sensor exports, dynamic adjustments output voltage dutycycle accordingly, thus automatically regulate the vacuum magnitude that vacuum pump produces.In the newborn process of suction, the pressure change between breast and breastshield monitored in real time by microcontroller, and when pressure is excessive, microcontroller reduces dutycycle, dynamically reduces the pull of vacuum of vacuum pump, make it exceed max-thresholds that breast bears pressure.
Wherein wire and suction nozzle bind together.
1) breast bears the on-line identification of Pressure Dynamic Model:
Described microcontroller is built with corresponding breast compression change tread mathematical model, i.e. P (u) (k)=Σ a
ip (u) (k-i)+Σ b
ju (k-j),
Wherein u is the control voltage signal that microcontroller provides, and dimension is volt, and k is the sampling time, and unit is millisecond, and P is the pressure that breast bears, and dimension is Pascal, and P can be recorded in real time by pliable pressure sensor, and Σ represents summation operation, a
iand b
jfor weight coefficient, i and j is weight coefficient a respectively
iand b
jsequence number index.
When starting to inhale breast, sending one group by microprocessor controls vacuum pump and souning out control voltage at random, make breast bear the negative pressure pressure of change at random, its surge pressure P
m<P
0, P
0namely the breast that makes obtained through a large amount of statistical test produces the meansigma methods of the safe pressure of deformation, the pressure recorded according to this group and control voltage, and microcontroller employing least square method of recursion picks out the weight coefficient a in dynamic mathematical models
iand b
j.
2) breast inhales the automatic generation of newborn negative pressure given curve
Described microcontroller built with the waveform pattern of the newborn negative pressure variation of multiple suction, comprise sine wave, luffing be sinusoidal wave, frequency conversion is sinusoidal wave, frequency conversion and luffing sinusoidal wave, user is according to P
0the constraint of upper pressure limit, can select any one waveform pattern, P
0namely the breast that makes obtained through a large amount of statistical test produces the meansigma methods of the safe pressure of deformation, microcontroller generate according to the waveform pattern of customer selecting inhale newborn negative pressure variation given curve, and control vacuum pump according to suction newborn negative pressure variation given curve negative pressure is provided.
3) automatically inhale newborn negative pressure feedback to control
Described microcontroller bears pressure P according to the breast that piezoelectric film sensor measures in real time and inhales newborn negative pressure variation given curve not given negative pressure P in the same time
r, calculate output voltage values u (k) of microcontroller in real time by following formula, wherein α >0, α are the coefficient of regulable control degree of stability:
u(k)＝(P
r(k+1)-Σa
iP(u)(k-i+1)+Σ
j≠1b
ju(k-j+1))b
1/(b
1 2+α)
Wherein u is the control voltage signal that microcontroller provides, and dimension is volt, and k is the sampling time, and unit is millisecond, and P is the pressure that breast bears, and dimension is Pascal, and Σ represents summation operation, a
iand b
jfor weight coefficient, i and j is weight coefficient a respectively
iand b
jsequence number index.
4) special circumstances and fault process automatically
When inhaling breast, the pressure change between breast and breastshield monitored in real time by microcontroller, when pressure is excessive, i.e. and P>P
0or P=P
0time, microcontroller can reduce the dutycycle of PWM ripple, dynamically reduces pull of vacuum, make it exceed threshold value P that breast bears pressure
0; If pitched between breast and humalactor guard shield, now pressure can lower than the normal threshold value P inhaling breast
s, be in the newborn pattern of inefficient suction, microcontroller can retighten humalactor by alarm user.Negative pressure pressure is caused to exceed threshold value P when vacuum pump breaks down
0and the control of microcontroller invalid time, microcontroller will cut off vacuum-pump power supply automatically, preserve to protect the mammary gland of user.
Being close to outside described piezoelectric film sensor inside breastshield, inside described piezoelectric film sensor, being provided with the silica gel for contacting with mammary surface, by arranging silica gel to protect breast.
Described piezoelectric film sensor is PVDF piezoelectric film sensor, and it is a kind of sensor of flexibility, and the pressure can monitored in real time between breastshield and user breast changes.
Described main body is provided with counterflow-preventing assembly for connecting receiving vessel place, and effect prevents because error causes milk reverse back stream main frame, causes motor or microcontroller damage.
Described main control system is provided with the manual adjustments button for carrying out manual adjustments to vacuum pump suction.When automatic failure of adjustment or need emergency manual regulate make, manually regulating key regulates the suction size of vacuum pump.
Described main control system is also provided with alarm, the pressure detected when piezoelectric film sensor is less than setup pressure value, time namely lower than minimum threshold, pitches between breast and humalactor guard shield, now be in the newborn pattern of inefficient suction, alarm equipment alarm prompting user regulates.
Compared with prior art, the present invention has the following advantages and beneficial effect:
1, the present invention adopts pliable pressure sensor to be arranged on humalactor and breast is affixed part, the vacuum magnitude that the mammary gland of breast bears in the newborn process of suction is detected in real time, and according to the force value measured, real-time feedback control is carried out to the newborn pressure of suction, guarantee that pressure that mammary gland and breast tissue can bear is within the scope of secure threshold, if once occur causing pressure increase because of factors such as humalactor plant failure, voltage pulsations, reach secure threshold, just automatically carry out pressure discharge operations, guarantee that the mammary gland of user and breast tissue preserve from.
2, apparatus of the present invention are provided with multiple waveforms pattern in the microcontroller, and user can select as required voluntarily.
3, main control system is provided with manual adjustments button, manually can regulate the suction size of vacuum pump by regulating key, the apparatus of the present invention that are set to of manual adjustments button provide dual safety guarantee.
4, the pressure that the breast that this electric breast pump can monitor humalactor user in real time bears, dynamic adjustments humalactor pull of vacuum, avoids the excessive injury of breast caused of pull of vacuum, protection user udder health.
5, apparatus of the present invention structure is simple, is easy to realize, and prevents the injury to user breast because the fault in humalactor use procedure causes.
Accompanying drawing explanation
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, 3 is breastshield, and 4 is main body, and 5 is receiving vessel, 6 is suction nozzle, and 7 is wire, and 8 is vacuum pump, 9 is main control system, and 10 is manual adjustments button, and 11 is counterflow-preventing assembly, 12 is charge amplifier, 13 is low pass filter, and 14 is proportional amplifier, and 15 is microcontroller.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor, comprise breastshield 3, main body 4, suction nozzle 6, vacuum pump 8 and main control system 9, breastshield 3 is connected with main body 4, main body 4 is connected with vacuum pump 8 by suction nozzle 6, vacuum pump 8 is arranged in main control system 9, main body 4 lower end is for connecting receiving vessel 5, also be provided with piezoelectric film sensor 1 and feedback unit, piezoelectric film sensor 1 is arranged on the inner side of breastshield 3, it is inner that feedback unit is arranged on main control system 9, piezoelectric film sensor 1 is connected with feedback unit, piezoelectric film sensor 1 detects the negative pressure that mammary surface tissue bears, and pass to feedback unit, feedback unit controls the suction size of vacuum pump 8 according to feedback information.
Being close to inside breastshield 3 outside piezoelectric film sensor 1, inside piezoelectric film sensor 1, being provided with the silica gel 2 for contacting with mammary surface, by arranging silica gel 2 to protect breast.
Piezoelectric film sensor 1 is PVDF piezoelectric film sensor, and it is a kind of sensor of flexibility, and the pressure can monitored in real time between breastshield and user breast changes.
Main body 4 is provided with counterflow-preventing assembly 11 for connecting receiving vessel 5 place, and effect prevents because error causes milk reverse back stream main frame, causes motor or microcontroller damage.
Main control system 9 is provided with the manual adjustments button 10 for carrying out manual adjustments to vacuum pump 8 suction.When automatic failure of adjustment or need emergency manual regulate make, manually regulating key 10 regulates the suction size of vacuum pump 8.
Main control system 9 is also provided with alarm, the pressure detected when piezoelectric film sensor 1 is less than setup pressure value, time namely lower than minimum threshold, pitches between breast and humalactor guard shield, now be in the newborn pattern of inefficient suction, alarm equipment alarm prompting user regulates.
With reference to figure 2, feedback unit comprises charge amplifier 12, low pass filter 13, proportional amplifier 14 and microcontroller 15, piezoelectric film sensor 1 two electrodes 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 vacuum pump 8, vacuum pump 8 produces negative pressure, piezoelectric film sensor 1 detects the negative pressure that mammary surface tissue bears, and produce voltage output, electric signal sequence is transferred to charge amplifier 12, low pass filter 13, proportional amplifier 14 and microcontroller 15, charge amplifier 12 pairs of signals amplify, owing to inhaling the frequency of breast operation close to 1Hz, therefore low pass filter 13 pairs of signals are adopted to carry out low-pass filtering, then after proportional amplifier 14 pairs of signals carry out scale amplifying, flow to microcontroller 15, after microcontroller 15 pairs of signals carry out nonlinear calibration correction, the negative pressure that vacuum pump 8 is produced proportional relation corresponding to the voltage that piezoelectric film sensor 1 exports, can judge whether the negative pressure that vacuum pump 8 produces exceedes threshold value according to the voltage that piezoelectric film sensor 1 exports, dynamic adjustments output voltage dutycycle accordingly, thus automatically regulate the vacuum magnitude that vacuum pump 8 produces.In the newborn process of suction, the pressure of microcontroller 15 in real time between monitoring breast and breastshield change, and when pressure is excessive, microcontroller reduces dutycycle, dynamically the pull of vacuum of reduction vacuum pump 8, make it exceed max-thresholds that breast bears pressure.
In the present embodiment, wire 7 and suction nozzle 6 bind together.
Humalactor in the present embodiment possesses following functions:
1, breast bears the on-line identification of Pressure Dynamic Model:
Microcontroller 15 is built with corresponding breast compression change tread mathematical model, i.e. P (u) (k)=Σ a
ip (u) (k-i)+Σ b
ju (k-j),
Wherein u is the control voltage signal that microcontroller provides, and dimension is volt, and k is the sampling time, and unit is millisecond, and P is the pressure that breast bears, and dimension is Pascal, and P can be recorded in real time by pliable pressure sensor, and Σ represents summation operation, a
iand b
jfor weight coefficient, i and j is weight coefficient a respectively
iand b
jsequence number index.
When starting to inhale breast, controlling vacuum pump 8 by microcontroller 15 and sending one group and sound out control voltage at random, making breast bear the negative pressure pressure of change at random, its surge pressure P
m<P
0, P
0namely the breast that makes obtained through a large amount of statistical test produces the meansigma methods of safe pressure of deformation, the pressure recorded according to this group and control voltage, and microcontroller 15 adopts least square method of recursion to pick out parameter a in dynamic mathematical models
iand b
j.
2, breast inhales the automatic generation of newborn negative pressure given curve
Microcontroller 15 built with the waveform pattern of the newborn negative pressure variation of multiple suction, comprise sine wave, luffing be sinusoidal wave, frequency conversion is sinusoidal wave, frequency conversion and luffing sinusoidal wave, user is according to P
0the constraint of upper pressure limit, can select any one waveform pattern, P
0namely the breast that makes obtained through a large amount of statistical test produces the meansigma methods of the safe pressure of deformation, microcontroller 15 generate according to the waveform pattern of customer selecting inhale newborn negative pressure variation given curve, and control vacuum pump 8 according to suction newborn negative pressure variation given curve negative pressure is provided.
3, automatically inhale newborn negative pressure feedback to control
Microcontroller 15 bears pressure P according to the breast that piezoelectric film sensor 1 measures in real time and inhales newborn negative pressure variation given curve not given negative pressure P in the same time
r, calculate output voltage values u (k) of microcontroller (15) in real time by following formula, wherein α >0, α are the coefficient of regulable control degree of stability:
u(k)＝(P
r(k+1)-Σa
iP(u)(k-i+1)+Σ
j≠1b
ju(k-j+1))b
1/(b
1 2+α)
Wherein u is the control voltage signal that microcontroller provides, and dimension is volt, and k is the sampling time, and unit is millisecond, and P is the pressure that breast bears, and dimension is Pascal, and Σ represents summation operation, a
iand b
jfor weight coefficient, i and j is weight coefficient a respectively
iand b
jsequence number index.
4, special circumstances and fault process automatically
When inhaling breast, the pressure of microcontroller 15 in real time between monitoring breast and breastshield changes, when pressure is excessive, i.e. and P>P
0or P=P
0time, microcontroller can reduce the dutycycle of PWM ripple, dynamically reduces pull of vacuum, make it exceed threshold value P that breast bears pressure
0; If pitched between breast and humalactor guard shield, now pressure can lower than the normal threshold value P inhaling breast
s, be in the newborn pattern of inefficient suction, microcontroller can retighten humalactor by alarm user.Negative pressure pressure is caused to exceed threshold value P when vacuum pump breaks down
0and the control of microcontroller invalid time, microcontroller will cut off vacuum-pump power supply automatically, preserve to protect the mammary gland of user.
Above-mentioned is can understand and use invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1. one kind is carried out the electric breast pump of pressure feedback control based on pliable pressure sensor, comprise breastshield (3), main body (4), suction nozzle (6), vacuum pump (8) and main control system (9), described breastshield (3) is connected with main body (4), described main body (4) is connected with vacuum pump (8) by suction nozzle (6), described vacuum pump (8) is arranged in main control system (9), described main body (4) lower end is for connecting receiving vessel (5), it is characterized in that, also be provided with piezoelectric film sensor (1) and feedback unit, described piezoelectric film sensor (1) is arranged on the inner side of breastshield (3), it is inner that described feedback unit is arranged on main control system (9), described piezoelectric film sensor (1) is connected with feedback unit, described piezoelectric film sensor (1) detects the negative pressure that mammary surface tissue bears, and pass to feedback unit, feedback unit controls the suction size of vacuum pump (8) according to feedback information.
2. a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor according to claim 1, it is characterized in that, described feedback unit comprises charge amplifier (12), low pass filter (13), proportional amplifier (14) and microcontroller (15), described piezoelectric film sensor (1) two electrode by wire (7) successively with charge amplifier (12), low pass filter (13), proportional amplifier (14) and microcontroller (15) connect, described microcontroller (15) is also connected with vacuum pump (8),
Described vacuum pump (8) produces negative pressure, piezoelectric film sensor (1) detects the negative pressure that mammary surface tissue bears, and produce voltage output, electric signal sequence is transferred to charge amplifier (12), low pass filter (13), proportional amplifier (14) and microcontroller (15), the negative pressure that vacuum pump (8) produces by microcontroller (15) proportional relation corresponding to the voltage that piezoelectric film sensor (1) exports, and the size of vacuum pump (8) suction is regulated according to the voltage that piezoelectric film sensor (1) exports.
3. a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor according to claim 2, it is characterized in that, described microcontroller (15) is built with corresponding breast compression change tread mathematical model, i.e. P (u) (k)=Σ a
ip (u) (k-i)+Σ b
ju (k-j),
Wherein u is the control voltage signal that microcontroller provides, and dimension is volt, and k is the sampling time, and unit is millisecond, and P is the pressure that breast bears, and dimension is Pascal, and Σ represents summation operation, a
iand b
jfor weight coefficient, i and j is weight coefficient a respectively
iand b
jsequence number index,
When starting to inhale breast, sending one group by microcontroller (15) control vacuum pump (8) and souning out control voltage at random, making breast bear the negative pressure pressure of change at random, its surge pressure P
m<P
0, P
0namely the breast that makes obtained through a large amount of statistical test produces the meansigma methods of the safe pressure of deformation, the pressure recorded according to this group and control voltage, and microcontroller (15) employing least square method of recursion picks out the parameter a in dynamic mathematical models
iand b
j.
4. a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor according to claim 2, it is characterized in that, described microcontroller (15) is built with the waveform pattern of the newborn negative pressure variation of multiple suction, comprise sine wave, luffing be sinusoidal wave, frequency conversion is sinusoidal wave, frequency conversion and luffing sinusoidal wave, user is according to P
0the constraint of upper pressure limit, can select any one waveform pattern, P
0namely the breast that makes obtained through a large amount of statistical test produces the meansigma methods of the safe pressure of deformation, microcontroller (15) generate according to the waveform pattern of customer selecting inhale newborn negative pressure variation given curve, and control vacuum pump (8) according to suction newborn negative pressure variation given curve negative pressure is provided.
5. a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor according to claim 4, it is characterized in that, described microcontroller (15) bears pressure P according to the breast that piezoelectric film sensor (1) measures in real time and inhales newborn negative pressure variation given curve not given negative pressure P in the same time
r, calculate output voltage values u (k) of microcontroller (15) in real time by following formula, wherein α >0, α are the coefficient of regulable control degree of stability:
u(k)＝(P
r(k+1)-Σa
iP(u)(k-i+1)+Σ
j≠1b
ju(k-j+1))b
1/(b
1 2+α)
Wherein u is the control voltage signal that microcontroller provides, and dimension is volt, and k is the sampling time, and unit is millisecond, and P is the pressure that breast bears, and dimension is Pascal, and Σ represents summation operation, a
iand b
jfor weight coefficient, i and j is weight coefficient a respectively
iand b
jsequence number index.
6. a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor according to claim 1, it is characterized in that, described piezoelectric film sensor (1) outside is close to breastshield (3) inner side, and described piezoelectric film sensor (1) inner side is provided with the silica gel (2) for contacting with mammary surface.
7. a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor according to claim 1, is characterized in that, described piezoelectric film sensor (1) is PVDF piezoelectric film sensor.
8. a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor according to claim 1, it is characterized in that, described main body (4) is provided with counterflow-preventing assembly (11) for connecting receiving vessel (5) place.
9. a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor according to claim 1, it is characterized in that, described main control system (9) is provided with the manual adjustments button (10) for carrying out manual adjustments to vacuum pump (8) suction.
10. a kind of electric breast pump carrying out pressure feedback control based on pliable pressure sensor according to claim 1, it is characterized in that, described main control system (9) is also provided with alarm, when the pressure that piezoelectric film sensor (1) detects is less than setup pressure value, alarm equipment alarm.
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| 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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|---|---|---|---|
| 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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108355182A (en) * | 2018-04-12 | 2018-08-03 | 牛香如 | Breast pump and breast pump suit |
| CN108387369A (en) * | 2018-02-07 | 2018-08-10 | 东莞市简爱母婴用品有限公司 | A kind of breast pump test device and method |
| WO2020185600A1 (en) * | 2019-03-08 | 2020-09-17 | Exploramed Nc7, Inc. | Fluid and air volume measurement system for a breast pump assembly |
| US10881766B2 (en) | 2017-06-15 | 2021-01-05 | Chiaro Technology Limited | Breast pump system |
| CN112689519A (en) * | 2018-09-12 | 2021-04-20 | 皇家飞利浦有限公司 | Breast pump device |
| 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 |
| TWI741019B (en) * | 2016-09-02 | 2021-10-01 | 瑞士商米黛拉控股公司 | Breast shield, breastpump unit, and breast shield unit |
| US11806454B2 (en) | 2020-03-26 | 2023-11-07 | Chiaro Technology Limited | Wearable breast pump system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000066195A1 (en) * | 1999-05-04 | 2000-11-09 | Patricia Ann Kelly | Electric breast pump designed to simulate infant suckling |
| CN2462932Y (en) * | 2001-01-12 | 2001-12-05 | 中国人民解放军***南京总医院 | Full-automatic milking pump |
| 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 |
| KR20100103152A (en) * | 2009-03-13 | 2010-09-27 | 김연준 | Breast milker |
| 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 |
-
2015
- 2015-10-16 CN CN201510672651.XA patent/CN105288759B/en active Active
Patent Citations (7)
| 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 |
| WO2000066195A1 (en) * | 1999-05-04 | 2000-11-09 | Patricia Ann Kelly | Electric breast pump designed to simulate infant suckling |
| CN2462932Y (en) * | 2001-01-12 | 2001-12-05 | 中国人民解放军***南京总医院 | Full-automatic milking pump |
| 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 |
| KR20100103152A (en) * | 2009-03-13 | 2010-09-27 | 김연준 | Breast milker |
| 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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| US11357893B2 (en) | 2017-06-15 | 2022-06-14 | Chiaro Technology Limited | Breast pump system |
| US11357894B2 (en) | 2017-06-15 | 2022-06-14 | Chiaro Technology Limited | Breast pump system |
| US11376352B2 (en) | 2017-06-15 | 2022-07-05 | Chiaro Technology Limited | Breast pump system |
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| CN108387369A (en) * | 2018-02-07 | 2018-08-10 | 东莞市简爱母婴用品有限公司 | A kind of breast pump test device and method |
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| CN112689519A (en) * | 2018-09-12 | 2021-04-20 | 皇家飞利浦有限公司 | Breast pump device |
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