CN109827703A - Air pressure detection method, device and washing machine - Google Patents
Air pressure detection method, device and washing machine Download PDFInfo
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- CN109827703A CN109827703A CN201910240683.0A CN201910240683A CN109827703A CN 109827703 A CN109827703 A CN 109827703A CN 201910240683 A CN201910240683 A CN 201910240683A CN 109827703 A CN109827703 A CN 109827703A
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Abstract
The invention discloses a kind of pressure test device, the pressure test device includes: shell, is equipped with the first opening；Absolute pressure sensor is disposed in the housing；Fixing piece, is disposed in the housing and offers cavity, and the fixing piece is equipped with the second opening and third opening for being connected to the cavity, the third opening and first open communication；Differential pressure pickup is set to second opening, to detect the pressure difference between in the cavity and in the shell.Invention additionally discloses a kind of air pressure detection method and washing machines.Pressure-detecting device of the present invention can accurately measure the air pressure in external environment.
Description
Technical field
The present invention relates to air pressure detection technique field more particularly to a kind of air pressure detection methods, device and washing machine.
Background technique
Baroceptor is the instrument for measuring the absolute pressure of gas, is primarily adapted for use in object relevant to gas pressure intensity
Reason experiment, such as gas law, can also measurement drying, non-corrosive gas pressure intensity in biological and chemical experiment.
When pressure in baroceptor detection environment, since personnel walk about in environment, alternatively, conditioner
Air pressure fluctuation in environment caused by (conditioner is fan or air conditioner), so that baroceptor shows to generate
Air pressure noise, so as to cause the air pressure inaccuracy of baroceptor detection.
Summary of the invention
The main purpose of the present invention is to provide a kind of air pressure detection method, device and washing machines, it is intended to solve air pressure transmission
The problem of the air pressure inaccuracy of sensor detection.
To achieve the above object, a kind of pressure test device provided by the invention, the pressure test device include:
Shell is equipped with the first opening；
Absolute pressure sensor is disposed in the housing；
Fixing piece is disposed in the housing and offers cavity, and the fixing piece, which is equipped with, is connected to the second of the cavity
Opening and third opening, the third opening and first open communication；
Differential pressure pickup is set to second opening, to detect the pressure between in the cavity and in the shell
Difference.
In one embodiment, the shell be equipped with the 4th opening, the shell be equipped with the 4th opening so that outside air into
Enter in the shell.
In one embodiment, the pressure test device further includes processor, memory and is stored on the memory
And the air-pressure detecting program that can be run on the processor, it is realized such as when the air-pressure detecting program is executed by the processor
Lower step:
Obtain the second electricity of resistance in the first voltage value of resistance in the absolute pressure sensor and the differential pressure pickup
Pressure value；
The first air pressure of the external environment is determined according to the first voltage value, and is determined according to the second voltage value
The first draught head between in the shell and in the cavity；
The second air pressure in the cavity is determined according to first draught head and first air pressure, wherein described
Second air pressure is the target air pressure of the external environment.
To achieve the above object, the present invention also provides a kind of washing machine, the washing machine includes as described in claim
Pressure test device.
In one embodiment, the pressure test device is set to the cylinder bottom of the washing machine, and the cylinder bottom is opened
Opening equipped with connection outside air.
To achieve the above object, the present invention also provides a kind of air pressure detection methods, and the air pressure detection method includes following
Step:
Obtain the first voltage value of resistance and the second voltage value of resistance in differential pressure pickup in absolute pressure sensor；
The first air pressure of the external environment is determined according to the first voltage value, and is determined according to the second voltage value
The first draught head between in the shell and in the cavity；
The second air pressure in the cavity is determined according to first draught head and first air pressure, wherein described
Second air pressure is the target air pressure of the external environment.
In one embodiment, determined according to first draught head and first air pressure in the cavity
The step of two air pressures includes:
Determine the period where each first air pressure and each first draught head；
Determine the first gas pressure curve according to the period and each first air pressure, and according to the period with
And each first draught head determines the first differential pressure curve；
Reverse phase processing is carried out to first differential pressure curve, to obtain second differential pressure curve；
Processing is overlapped to second differential pressure curve and first gas pressure curve, it is corresponding to obtain the cavity
The second gas pressure curve；
The cavity corresponding second air pressure during the period of time is determined according to second gas pressure curve.
In one embodiment, described to determine that the cavity is corresponding during the period of time according to second gas pressure curve
The step of second air pressure includes:
Calculate the second draught head on second gas pressure curve between corresponding second air pressure of adjacent time point；
The second draught head that will be greater than preset difference value is poor as target air pressure, and determines the corresponding mesh of the target air pressure difference
Mark the second air pressure；
Each the second air pressure of the target is rejected on second gas pressure curve, it is bent to obtain revised second air pressure
Line；
The cavity corresponding second air pressure during the period of time is determined according to the second gas pressure curve described after amendment.
In one embodiment, described that reverse phase processing is carried out to first differential pressure curve, it is bent to obtain second pressure difference
The step of line includes:
By the time shaft in the coordinate system where first differential pressure curve, as object axis；
Using the object axis as symmetry axis, symmetrical treatment is carried out to first differential pressure curve, to obtain and described the
Symmetrical second differential pressure curve of one differential pressure curve.
It is in one embodiment, described that processing is overlapped to second differential pressure curve and first gas pressure curve,
To include: the step of obtaining the cavity corresponding second gas pressure curve
Determine each third draught head in second differential pressure curve, and determining and each in first gas pressure curve
Corresponding first air pressure of a third draught head, wherein the third draught head corresponding time point and the third air pressure
The time point of corresponding first air pressure of difference is identical；
Third draught head each in second differential pressure curve is superimposed to corresponding first gas of each third pressure difference
Pressure, to obtain corresponding second gas pressure curve of the cavity.
A kind of pressure test device, method and washing machine provided by the invention, pressure test device include being equipped with first to open
The shell of mouth, absolute pressure sensor, fixing piece and the differential pressure pickup being set in the housing, fixing piece offer cavity, and fixed
Part is equipped with the second opening and third opening of connection cavity, and third opening and the first open communication, differential pressure pickup are set to
Second opening with detect in cavity with the intracorporal draught head of shell, and absolute pressure sensor detect the intracorporal air pressure of shell, air pressure detection dress
Set the air pressure by the way that the air pressure in cavity can be obtained in the intracorporal air pressure of shell and cavity with the intracorporal draught head of shell, in cavity
Target air pressure as in external environment；Fluctuation is generated since the air in cavity not will receive the influence of external factor, is made
The air pressure in external environment can accurately be measured by obtaining pressure-detecting device.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of pressure test device of the present invention；
Fig. 2 is the structural schematic diagram of another embodiment of pressure test device of the present invention；
Fig. 3 is the flow diagram of an embodiment of pressure test device of the present invention；
Fig. 4 is the flow diagram of another embodiment of pressure test device of the present invention；
Fig. 5 is the schematic diagram of the first gas pressure curve in the present invention, the first differential pressure curve and the second differential pressure curve.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 10 | Shell | 11 | First opening |
| 12 | 4th opening | 13 | Clamshell |
| 14 | Pedestal | 20 | Absolute pressure detector |
| 30 | Fixing piece | 31 | Cavity |
| 32 | Third opening | 40 | Absolute pressure sensor |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
For example, " fixation " may be a fixed connection, it may be a detachable connection, or integral；It can be mechanical connection, be also possible to
Electrical connection；It can be directly connected, the connection inside two elements or two can also be can be indirectly connected through an intermediary
The interaction relationship of a element, unless otherwise restricted clearly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as
Its relative importance of indication or suggestion or the quantity for implicitly indicating indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not the present invention claims guarantor
Within the scope of shield.
The present invention provides a kind of pressure test device.
Referring to Fig.1, Fig. 1 is an example structure schematic diagram of pressure test device of the present invention, the pressure test device
It include: shell 10, shell 10 is equipped with the first opening 11；Absolute pressure sensor 20 is set in shell 10；Fixing piece 30 is set to shell
In 10 and cavity 31 is offered, fixing piece 10 is equipped with the second opening (not indicating) and third opening 32 of connection cavity 31, the
Three openings 32 are connected to the first opening 11；Differential pressure pickup 40 is set to the second opening, to detect in cavity 31 and shell 10
Pressure difference between interior.
Differential pressure pickup 40 can be covered on the second opening, so that the air in cavity may not flow into shell, namely make
Differential pressure pickup is able to detect in shell and the draught head in cavity.
Fixing piece 30 includes wall surface, and wall surface, which encloses, is set as a hollow structure, and hollow structure is cavity 31.In order to reduce outside
Factor causes air pressure in cavity 31 to fluctuate, and can set the lower part of cavity 31 to the cross of funnel-form namely third opening 32
Cross-sectional area of the area of section less than the second opening.
Further, referring to Fig. 2, shell 10 is equipped with the 4th opening 12, so that the air in external environment is opened by the 4th
Mouth flows into shell 10, so that absolute pressure sensor 20 is able to detect that the air pressure in external environment, if exhausted in certain time
The air pressure fluctuation that pressure sensor 20 detects is smaller, this air pressure can be external environment in this period corresponding target air pressure, if
It is that air pressure fluctuation is larger, then needs the draught head for detecting the air pressure combination differential pressure pickup 40 that absolute pressure sensor 20 detects, obtain
Air pressure in cavity, and using the air pressure in cavity as the target air pressure of external environment.
With continued reference to Fig. 2, shell 10 may include clamshell 13 and pedestal 14, and clamshell 13 is detachably connected with pedestal 14, for example,
It is connected by fastener or card slot, in order to the maintenance to absolute pressure sensor 20 and differential pressure pickup 30, clamshell 13 can be
Metal material, and pedestal 14 can be the lesser material of hardness, convenient for opening up the first opening 11 on pedestal 13.
Pressure test device is additionally provided with memory (not indicating), processor (not indicating) and is stored in memory and can be
The air-pressure detecting program run on processor.In the target air pressure for needing to detect external environment, processor is by obtaining absolute pressure
The voltage value of resistance in sensor, to determine the resistance change of resistance, and resistance change with air effect in shell exhausted
The absolute pressure of pressure membrane in pressure sensor is related, at this point, processor can be calculated absolutely according to increased resistance value
Pressure, absolute pressure are intracorporal first air pressure of shell；In addition, processor voltage value of resistance in obtaining absolute pressure sensor
Meanwhile the voltage value of resistance in differential pressure pickup can be obtained, the draught head in shell between cavity is obtained by the voltage value,
At this point, the first air pressure measured can be subtracted draught head obtains target air pressure, which is the target of external environment
Air pressure.Fluctuation is generated since the air in cavity not will receive the influence of external factor, enables pressure-detecting device quasi-
The true air pressure measured in external environment.
The present invention also provides a kind of washing machine, washing machine includes pressure test device, and pressure test device is placed in laundry
The cylinder bottom of machine, cylinder bottom are equipped with opening, and the air in external environment can flow into pressure test device by the opening
In shell, so that the target air pressure of pressure test device detection external environment.Cylinder bottom is equipped with for detecting rolling liquid within the cartridge
The absolute pressure sensor of pressure, the target air pressure and absolute pressure sensor of the external environment that washing machine is detected by pressure test device
Fluid pressure is detected to calculate the water level in roller.
The present invention also provides a kind of air pressure detection methods.
Referring to Fig. 3, Fig. 3 is an embodiment of air pressure detection method of the present invention, and the air pressure detection method includes following step
It is rapid:
Step S100 obtains the second electricity of the first voltage value of resistance and resistance in differential pressure pickup in absolute pressure sensor
Pressure value；
Step S200 determines the first air pressure of the external environment according to the first voltage value, and according to described second
Voltage value determines the first draught head between in the shell and in the cavity；
Step S300 determines the second air pressure in the cavity according to first draught head and first air pressure,
Wherein, second air pressure is the target air pressure of the external environment；
Referring to Fig.1, pressure test device includes: shell 10, and shell 10 is equipped with the first opening 11；Absolute pressure sensor 20, if
In in shell 10；Fixing piece 30 in shell 10 and offers cavity 31, and fixing piece 10 is equipped with the second of connection cavity 31
It is open (not indicating) and third opening 32, third opening 32 is connected to the first opening 11；Differential pressure pickup 40 is set to the second opening
Place, to detect the pressure difference between in cavity 31 and in shell 10.
Pressure test device passes through the voltage value for obtaining resistance in absolute pressure sensor, to determine the resistance change of resistance,
And the absolute pressure of pressure membrane of the resistance change with air effect in shell in absolute pressure sensor is related, at this point, processor
Absolute pressure can be calculated according to increased resistance value, absolute pressure is intracorporal first air pressure of shell；In addition, processor
In obtaining absolute pressure sensor while the voltage value of resistance, the voltage value of resistance in differential pressure pickup can be obtained, by the voltage
Value obtains the draught head in shell between cavity, at this point, the first air pressure measured can be subtracted draught head obtains target
Air pressure, the target air pressure are the target air pressure of external environment.
Specifically, absolute pressure sensor, which measures intracorporal first air pressure of shell, is defined as P1, target air pressure is defined as P0, and pressure difference passes
The first draught head that sensor measures is △ P, △ P=P1-P0, it is known that, P1- △ P=P0, therefore can be according to known P1 and △
P0 is calculated in P.It should be noted that the corresponding detection time point of P1 detection time point corresponding with △ P is identical.
In another embodiment, shell 10 is equipped with the 4th opening 12, so that the air in external environment passes through the 4th opening
It flows into shell 10, so that absolute pressure sensor 20 is able to detect that the air pressure in external environment, if in certain time
The air pressure fluctuation that absolute pressure sensor 20 detects is smaller, this air pressure can be external environment in this period corresponding target air pressure,
If air pressure fluctuation is larger, then the draught head for detecting the air pressure combination differential pressure pickup 40 that absolute pressure sensor 20 detects is needed, is obtained
Air pressure in cavity, and using the air pressure in cavity as the target air pressure of external environment.In technical side provided in this embodiment
In case, pressure test device is by obtaining the shell that absolute pressure sensor measures intracorporal first air pressure of shell and differential pressure pickup measures
The first draught head between cavity in vivo, come the second air pressure being calculated in cavity, to obtain the target of external environment
Air pressure generates fluctuation since the air in cavity not will receive the influence of external factor, enables pressure-detecting device quasi-
The true air pressure measured in environment to be measured.
It is another embodiment of pressure test device of the present invention referring to Fig. 4, Fig. 4, is based on the above embodiments, the step
S300 includes:
Step S310 determines the period where each first air pressure and each first draught head；
Step S320 determines the first gas pressure curve according to the period and each first air pressure, and according to institute
It states the period and each first draught head determines the first differential pressure curve；
Step S330 carries out reverse phase processing to first differential pressure curve, to obtain second differential pressure curve；
Step S340 is overlapped processing to second differential pressure curve and first gas pressure curve, to obtain
State corresponding second gas pressure curve of cavity；
Step 350, the cavity corresponding second air pressure during the period of time is determined according to second gas pressure curve.
In one embodiment, shell offers the 4th opening, and absolute pressure sensor passes through the 4th opening detection external environment
Air pressure, because the air in external environment can flow into shell, so that the intracorporal air pressure of shell has fluctuation, therefore pressure test device is only
It calculates cavity and is sometime putting corresponding air pressure, be inaccurate.In this regard, in the present embodiment, pressure test device obtains empty
Air pressure of the chamber in the period accurately to obtain the target air pressure of external environment.
Specifically, pressure test device is after obtaining multiple first air pressures and multiple first draught heads, it is each to determine
Period where first air pressure and each first draught head；
Because pressure test device detects the first air pressure and the first draught head simultaneously, therefore the period at the place of the two is identical,
Thus, it is possible to generate the first gas pressure curve according to each first air pressure and period, and according to each first draught head with
And the period generates the first differential pressure curve, due to the influence of external factor, the first air pressure can be made to be fluctuated namely the first gas
Line of buckling is curve, and cavity is semi-closed structure, and the air in cavity, which is not easily susceptible to external factor, to be influenced and generate barometric wave
It is dynamic, it is to be understood that the gas pressure curve that each air pressure of the air in the period in cavity is formed is straight line, the curve
It is parallel with time shaft；And the first differential pressure curve is that the first gas pressure curve subtracts the parallel lines and obtains actually, the first differential pressure curve
Waveform it is consistent with the waveform of the first gas pressure curve；
After obtaining the first gas pressure curve and the first differential pressure curve, the first draught head is carried out reverse phase by pressure test device
Processing, reverse phase processing is that the first differential pressure curve is carried out symmetrical treatment, specifically, the first differential pressure curve and the first gas pressure curve
Positioned at the same coordinate system, pressure test device is then symmetrical with target axis using the time shaft in coordinate system as object axis
Axis carries out symmetrical treatment to the first differential pressure curve, to obtain the second differential pressure curve；
After obtaining the second differential pressure curve, processing is overlapped to the second differential pressure curve and the first gas pressure curve, with
To corresponding second gas pressure curve of cavity, specifically, each third pressure difference in the second differential pressure curve is on first pressure curve
The time point of time point first pressure corresponding with third pressure difference time point with corresponding first pressure namely third pressure difference
It is identical, the numerical value of third pressure difference is added with the numerical value of first pressure, obtains each second air pressure as a result, each second
Air pressure constitutes the second gas pressure curve, and the second gas pressure curve is cavity in period corresponding each second air pressure；First pressure
Curve, the first differential pressure curve and the second differential pressure curve can refer to Fig. 5；
When air pressure is affected in cavity, the difference that the second gas pressure curve will appear a certain air pressure and other air pressures is larger
The case where, at this point, the air pressure can be rejected, therefore calculate in the second gas pressure curve between corresponding second air pressure of adjacent time point
Second draught head, the second draught head that then will be greater than preset difference value is poor as target air pressure, and target air pressure difference is corresponding with two
Second air pressure, since target air pressure difference is adjacent two-by-two, corresponding second air pressure of target of two adjacent target air pressure differences, such as
There are 40 target air pressures poor, then there should be the second air pressure of target of 20 the second gas pressure curves of offset；Each second is rejected again
After target air pressure, revised second gas pressure curve can be obtained, thus can obtain sky according to revised second gas pressure curve
Chamber corresponding second air pressure within the period, for example, the corresponding numerical value of point each in revised second gas pressure curve can be passed through
Average value, which is cavity corresponding second air pressure within the period.
In technical solution provided in this embodiment, pressure test device determines each first air pressure and each first gas
Period where pressure difference thus generates corresponding first pressure curve and the first differential pressure curve, further according to first pressure song
Line and the first differential pressure curve obtain the second gas pressure curve of cavity, and then can determine external rings by the second gas pressure curve
Border further improves the detection accuracy of pressure test device in period corresponding target air pressure.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of pressure test device, which is characterized in that the pressure test device includes:
Shell is equipped with the first opening；
Absolute pressure sensor is disposed in the housing；
Fixing piece, is disposed in the housing and offers cavity, and the fixing piece is equipped with the second opening for being connected to the cavity
It is open with third, the third opening and first open communication；
Differential pressure pickup is set to second opening, to detect the pressure difference between in the cavity and in the shell.
2. the pressure test device as described in claim 1, which is characterized in that the shell is equipped with the 4th opening, so that outside
Portion's air enters in the shell.
3. pressure test device as claimed in claim 1 or 2, which is characterized in that the pressure test device further includes processing
Device, memory and it is stored in the air-pressure detecting program that can be run on the memory and on the processor, the air pressure inspection
Ranging sequence realizes following steps when being executed by the processor:
Obtain the second voltage value of resistance in the first voltage value of resistance in the absolute pressure sensor and the differential pressure pickup；
The first air pressure of the external environment is determined according to the first voltage value, and according to second voltage value determination
The first draught head between in shell and in the cavity；
The second air pressure in the cavity is determined according to first draught head and first air pressure, wherein described second
Air pressure is the target air pressure of the external environment.
4. a kind of washing machine, which is characterized in that the washing machine includes air pressure detection dress as described in any one of claims 1-3
It sets.
5. washing machine as claimed in claim 4, which is characterized in that the pressure test device is set to the roller of the washing machine
Bottom, the cylinder bottom offer the opening of connection outside air.
6. a kind of air pressure detection method, which is characterized in that detection method includes the following steps for the air pressure:
Obtain the first voltage value of resistance and the second voltage value of resistance in differential pressure pickup in absolute pressure sensor；
The first air pressure of the external environment is determined according to the first voltage value, and according to second voltage value determination
The first draught head between in shell and in the cavity；
The second air pressure in the cavity is determined according to first draught head and first air pressure, wherein described second
Air pressure is the target air pressure of the external environment.
7. air pressure detection method as claimed in claim 6, which is characterized in that described according to first draught head and described
First air pressure determines that the step of the second air pressure in the cavity includes:
Determine the period where each first air pressure and each first draught head；
The first gas pressure curve is determined according to the period and each first air pressure, and according to the period and respectively
A first draught head determines the first differential pressure curve；
Reverse phase processing is carried out to first differential pressure curve, to obtain second differential pressure curve；
Processing is overlapped to second differential pressure curve and first gas pressure curve, to obtain the cavity corresponding
Two gas pressure curves；
The cavity corresponding second air pressure during the period of time is determined according to second gas pressure curve.
8. air pressure detection method as claimed in claim 7, which is characterized in that described to determine institute according to second gas pressure curve
State cavity during the period of time corresponding second air pressure the step of include:
Calculate the second draught head on second gas pressure curve between corresponding second air pressure of adjacent time point；
The second draught head that will be greater than preset difference value is poor as target air pressure, and determines the corresponding target of target air pressure difference the
Two air pressures；
Each the second air pressure of the target is rejected, on second gas pressure curve to obtain revised second gas pressure curve；
The cavity corresponding second air pressure during the period of time is determined according to the second gas pressure curve described after amendment.
9. air pressure detection method as claimed in claim 7, which is characterized in that described to carry out reverse phase to first differential pressure curve
Processing, to obtain second differential pressure curve the step of include:
By the time shaft in the coordinate system where first differential pressure curve, as object axis；
Using the object axis as symmetry axis, symmetrical treatment is carried out to first differential pressure curve, to obtain and first pressure
Second differential pressure curve of poor curve symmetric.
10. air pressure detection method as claimed in claim 7, which is characterized in that described to second differential pressure curve and institute
It states the first gas pressure curve and is overlapped processing, to include: the step of obtaining the cavity corresponding second gas pressure curve
Determine each third draught head in second differential pressure curve, and determining and each institute in first gas pressure curve
State corresponding first air pressure of third draught head, wherein the third draught head corresponding time point and the third draught head pair
The time point for the first air pressure answered is identical；
Third draught head each in second differential pressure curve is superimposed to corresponding first air pressure of each third pressure difference, with
Obtain corresponding second gas pressure curve of the cavity.
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| CN201910240683.0A CN109827703B (en) | 2019-03-27 | 2019-03-27 | Air pressure detection method and device and washing machine |
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| CN201910240683.0A CN109827703B (en) | 2019-03-27 | 2019-03-27 | Air pressure detection method and device and washing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082027A (en) * | 2019-04-09 | 2019-08-02 | 苏州敏芯微电子技术股份有限公司 | Differential pressure pick-up encapsulating structure and electronic equipment |
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| CN110082027A (en) * | 2019-04-09 | 2019-08-02 | 苏州敏芯微电子技术股份有限公司 | Differential pressure pick-up encapsulating structure and electronic equipment |
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| US12092540B2 (en) | 2019-04-09 | 2024-09-17 | Memsensing Microsystems (Suzhou, China) Co. Ltd. | Package structure for differential pressure sensor, and electronic device |
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