CN106153126A - A kind of measurement of fluid flow method and effusion meter - Google Patents
A kind of measurement of fluid flow method and effusion meter Download PDFInfo
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- CN106153126A CN106153126A CN201510196734.6A CN201510196734A CN106153126A CN 106153126 A CN106153126 A CN 106153126A CN 201510196734 A CN201510196734 A CN 201510196734A CN 106153126 A CN106153126 A CN 106153126A
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Abstract
The invention discloses a kind of measurement of fluid flow method and effusion meter, solve effusion meter in prior art cannot inclement condition (the flow measurement condition as on-the-spot is the most unfavorable) at the scene, serious interference and carry out the technical problem of normal discharge measurement in the case of causing meter readings saltus step；Described measurement of fluid flow method is applied in flow meters, described method include step: S1, described effusion meter start after, fluid flow measures, to obtain raw measurement data；S2, evaluate the resonable degree of described raw measurement data, it is thus achieved that evaluation result；S3, determine the valid data in described raw measurement data based on described evaluation result, and export final flow rate reading based on described valid data；Achieve under the conditions of severe situ flow measurement, export correct and effective flow reading, to reflect the technique effect of the flow truth of flow process.
Description
Technical field
The present invention relates to fluid flux measurement technology field, particularly relate to a kind of measurement of fluid flow method and stream
Gauge.
Background technology
Measurement of fluid flow is the most essential, if fluid flow is the weight in chemical process in many fields
Want one of parameter, carry out to control production process energy stationary state, be necessary for often understanding pressure, flow etc.
Operating condition, and regulated and control, and for example when carrying out scientific experiments, also tend to need Accurate Determining
Fluid flow.The instrument measuring flow is diversified.At present, multiple due to the operating mode of on-the-spot applicable cases
Miscellaneous, bad environments, effusion meter instrument must possess filter function at hardware aspect, additionally, effusion meter instrument
Also needing to be filtered in software aspects, software digital filter algorithm is predominantly from the various filtering of communications industry
Algorithm.By above-mentioned hardware aspect and the filtering of software aspects so that the accuracy of the reading of effusion meter instrument
Ensured to a certain extent.
But, existing effusion meter software filtering scheme is substantially and carries out according to general signal processing technology
Filtering, the feature of the flow industry seldom applied according to effusion meter instrument is filtered；Sometimes on-the-spot stream
Measurement condition is unfavorable for the carrying out measured very much, and such as scene occurs that fluid flow has pulsation, fluid to be situated between
Matter has reciprocal backflow, fluid to have overall upheaval or site space to have the complex working conditions such as electromagnetic interference so that stream
Gauge reading jump.
Cannot inclement condition (the flow survey such as scene at the scene it is to say, prior art exists effusion meter
Amount condition is the most unfavorable), serious interference and carry out normal discharge in the case of causing meter readings saltus step
The technical problem measured.
Summary of the invention
The present invention is directed to present in prior art, effusion meter cannot at the scene inclement condition (such as on-the-spot stream
Measurement condition is the most unfavorable), serious interference and carry out in the case of causing meter readings saltus step normal
The technical problem of flow measurement, it is provided that a kind of measurement of fluid flow method and effusion meter, it is achieved that severe
Correct and effective flow reading is exported, to reflect the flow truth of flow process under the conditions of situ flow measurement
Technique effect.
On the one hand, embodiments provide a kind of measurement of fluid flow method, be applied in flow meters,
Described measurement of fluid flow method includes step:
S1, described effusion meter start after, fluid flow measures, to obtain raw measurement data；
S2, evaluate the resonable degree of described raw measurement data, it is thus achieved that evaluation result；
S3, determine the valid data in described raw measurement data based on described evaluation result, and based on described
Valid data output final flow rate reading.
Optionally, described effusion meter includes that the first memory element, described raw measurement data include basis queue
Data and current measurement data, described step S1 includes following sub-step:
S11, described effusion meter start after, fluid flow measures, obtain described basis number of queues
According to, and described basis queuing data is stored in described first memory element；
S12, described basis queuing data preserve complete after, obtain described current measurement data.
Optionally, described step S2 includes following sub-step:
S21, based on described basis queuing data, calculate obtain reference data；
S22, calculate the described current measurement data rate of change relative to described reference data, and based on described
Rate of change evaluates described current measurement data and the resonable degree of described basis queuing data, it is thus achieved that described evaluation
Result.
Optionally, described sub-step S22 includes following sub-step:
S221, calculate the described current measurement data rate of change relative to described reference data, it is judged that described change
Whether rate is less than or equal to a preset value, it is thus achieved that the first judged result；
S222, when described first judged result is for being, it is thus achieved that show that described current measurement data is significant figure
According to evaluation result.
Optionally, described effusion meter also includes second memory element different from described first memory element, institute
State the abnormal data that raw measurement data also includes being stored in described second memory element, perform described time
After sub-step S221, described sub-step S22 also includes following sub-step:
S223, when described first judged result is no, determine that described current measurement data is abnormal data,
And described current measurement data is stored in described second memory element；
S224, described current measurement data preserve after, add up and judge in described second memory element
It is stored in the abnormal data of predetermined number the most continuously, it is thus achieved that the second judged result；
S225, when described second judged result is for being, it is thus achieved that show the exception in described second memory element
Data are the evaluation result of valid data, and when described second judged result is no, it is thus achieved that show described
Current measurement data be abnormal data and described basis queuing data be the evaluation result of valid data.
On the other hand, the embodiment of the present invention additionally provides a kind of effusion meter, including:
Raw measurement data acquiring unit, after starting at described effusion meter, fluid flow measures,
To obtain raw measurement data；
Resonable degree evaluation unit, for evaluating the resonable degree of described raw measurement data, it is thus achieved that evaluate knot
Really；
Flow reading output unit, for determining having in described raw measurement data based on described evaluation result
Effect data, and export final flow rate reading based on described valid data.
Optionally, described effusion meter includes that the first memory element, described raw measurement data include basis queue
Data and current measurement data, described raw measurement data acquiring unit includes:
First data acquisition subelement, after starting at described effusion meter, fluid flow measures,
Obtain described basis queuing data, and described basis queuing data is stored in described first memory element；
Second data acquisition subelement, for, after the queuing data preservation of described basis is complete, obtaining described
Current measurement data.
Optionally, described resonable degree evaluation unit includes:
Reference data computation subunit, for based on described basis queuing data, calculating and obtain reference data；
Rate of change Calculation Estimation subelement, is used for calculating described current measurement data relative to described reference data
Rate of change, and based on described rate of change evaluate described current measurement data and described basis queuing data conjunction
Reason degree, it is thus achieved that described evaluation result.
Optionally, described rate of change Calculation Estimation subelement includes:
First judge module, for calculating the change relative to described reference data of the described current measurement data
Rate, it is judged that whether described rate of change is less than or equal to a preset value, it is thus achieved that the first judged result；
First evaluation module, for when described first judged result is for being, it is thus achieved that work as pre-test described in showing
Data are the evaluation result of valid data.
Optionally, described effusion meter also includes second memory element different from described first memory element, institute
State the abnormal data that raw measurement data also includes being stored in described second memory element, described rate of change meter
Calculate evaluation subelement also to include:
Determine module, for obtaining described first judged result, and described first at described first judge module
When judged result is no, determine that described current measurement data is abnormal data, and by described current measurement data
It is stored in described second memory element；
Second judge module, after preserving at described current measurement data, adds up and judges described the
Two memory element are stored in the abnormal data of predetermined number the most continuously, it is thus achieved that the second judged result；
Second evaluation module, for when described second judged result is for being, it is thus achieved that show described second storage
Abnormal data in unit is the evaluation result of valid data, and when described second judged result is no,
Obtain show described current measurement data be abnormal data and described basis queuing data be commenting of valid data
Valency result.
One or more technical schemes that the present invention provides, at least have the following technical effect that or advantage:
Due in the present invention, when carrying out flow measurement, by the resonable degree of raw measurement data is entered
Row is evaluated, it is thus achieved that evaluation result, and based on described evaluation result determine in described raw measurement data effective
Data, and export final flow rate reading based on described valid data；Efficiently solve flow in prior art
Meter cannot inclement condition (the flow measurement condition as on-the-spot is the most unfavorable) at the scene, serious interference and draw
The technical problem of normal discharge measurement is carried out, it is achieved that show severe in the case of playing meter readings saltus step
Under the conditions of field flow measurement (as fluid flow have pulsation, fluid media (medium) have backflow or upheaval, space have electricity
The complex working conditions such as magnetic disturbance), and under not reforming technology process condition, can exclusive PCR, output correct and
Effective flow reading, to reflect the technique effect of the flow truth of flow process.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only embodiments of the invention, for those of ordinary skill in the art, do not paying wound
On the premise of the property made work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
The first measurement of fluid flow method flow diagram that Fig. 1 provides for the embodiment of the present invention；
The second measurement of fluid flow method flow diagram that Fig. 2 provides for the embodiment of the present invention；
The third measurement of fluid flow method flow diagram that Fig. 3 provides for the embodiment of the present invention；
The first flowmeter structure block diagram that Fig. 4 provides for the embodiment of the present invention；
The second flowmeter structure block diagram that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
The embodiment of the present invention, by providing a kind of measurement of fluid flow method, solves present in prior art
Effusion meter cannot inclement condition (the flow measurement condition as on-the-spot is the most unfavorable), serious interference at the scene
And in the case of causing meter readings saltus step, carry out the technical problem of normal discharge measurement, it is achieved that badly
Situ flow measurement under the conditions of export correct and effective flow reading, to reflect the true feelings of the flow of flow process
The technique effect of condition.
The technical scheme of the embodiment of the present invention is for solving above-mentioned technical problem, and general thought is as follows:
Embodiments provide a kind of measurement of fluid flow method, be applied in flow meters, described stream
Body flow-measuring method include step: S1, described effusion meter start after, fluid flow measures,
To obtain raw measurement data；S2, evaluate the resonable degree of described raw measurement data, it is thus achieved that evaluation result；
S3, determine the valid data in described raw measurement data based on described evaluation result, and based on described effectively
Data output final flow rate reading.
Visible, in embodiments of the present invention, when carrying out flow measurement, by the conjunction to raw measurement data
Reason degree is evaluated, it is thus achieved that evaluation result, and determines described raw measurement data based on described evaluation result
In valid data, and based on described valid data export final flow rate reading；Efficiently solve existing skill
In art, effusion meter cannot inclement condition (the flow measurement condition as on-the-spot is the most unfavorable), interference at the scene
The technical problem of normal discharge measurement is carried out in the case of seriously causing meter readings saltus step, it is achieved that
Under the conditions of severe situ flow measurement (as fluid flow have pulsation, fluid media (medium) have backflow or upheaval,
There are the complex working conditions such as electromagnetic interference in space), and under not reforming technology process condition, energy exclusive PCR, defeated
Go out correct and effective flow reading, to reflect the technique effect of the flow truth of flow process.
In order to be better understood from technique scheme, below in conjunction with Figure of description and concrete embodiment party
Technique scheme is described in detail by formula, it should be understood that the tool in the embodiment of the present invention and embodiment
Body characteristics is to describe technical scheme in detail rather than restriction to technical scheme,
In the case of not conflicting, the technical characteristic in the embodiment of the present invention and embodiment can be mutually combined.
Embodiment one
Refer to Fig. 1, embodiments provide a kind of measurement of fluid flow method, be applied to a flow
In meter, described measurement of fluid flow method includes step:
S1, described effusion meter start after, fluid flow measures, to obtain raw measurement data；
S2, evaluate the resonable degree of described raw measurement data, it is thus achieved that evaluation result；
S3, determine the valid data in described raw measurement data based on described evaluation result, and based on described
Valid data output final flow rate reading.
In specific implementation process, although the condition of the measure field of effusion meter due to multiple emergency case (as
Fluid flow has pulsation, fluid media (medium) to have backflow or upheaval, space to have the complex working conditions such as electromagnetic interference) and send out
Changing, but the objective of putting into practice of field of flow measurement is thought: in the ordinary course of things, the stream in technological process
Amount will not be undergone mutation, and i.e. requires that effusion meter can interpolate that the effectiveness of the measuring condition change of measure field,
And export can the flow reading of reflected measurement scene truth, specifically include: 1) determine when judging
When the time that measure field is undergone mutation is the shortest, reciprocal time is few, will not measure, when sudden change, the data obtained
Export as valid data, 2) when judge determine persistent period time that measure field is undergone mutation
Time longer, the most frequent, export measuring, when sudden change, the data obtained as valid data.For reality
Existing this purpose, the application gives the technical scheme as described by above-mentioned steps S1～S3, i.e. surveys at flow
During amount, effusion meter needs to gather multiple flow measuring data (the most described raw measurement data), logical
Cross the resonable degree evaluating these flow measuring datas, thus chosen from the plurality of flow measuring data
Effect data, and based on a determination that valid data output final flow rate reading；Concrete, generally take these effective
The meansigma methods of data exports as final flow rate reading.
Described raw measurement data and the dynamic process of output flow reading is obtained, to this below in conjunction with effusion meter
Scheme is specifically introduced:
Firstly, for above-mentioned steps S1: described effusion meter includes the first memory element, described original measurement number
According to including basis queuing data and current measurement data, refer to Fig. 2, described step S1 includes following sub-step
Rapid:
S11, described effusion meter start after, fluid flow measures, obtain described basis number of queues
According to, and described basis queuing data is stored in described first memory element；
S12, described basis queuing data preserve complete after, obtain described current measurement data.
Further, for above-mentioned steps S2: referring still to Fig. 2, described step S2 includes following sub-step:
S21, based on described basis queuing data, calculate obtain reference data；
S22, calculate the described current measurement data rate of change relative to described reference data, and based on described
Rate of change evaluates described current measurement data and the resonable degree of described basis queuing data, it is thus achieved that described evaluation
Result.
Concrete, starting at described effusion meter and measure week after date, first effusion meter is measured acquisition one group and is measured number
According to (the most described basis queuing data), and it is deposited into described first memory element, measures number for described one group
According to number identical with the degree of depth of described first memory element, as being 20.Measuring the starting stage, described
Basis queuing data is set as valid data, using the meansigma methods of described basis queuing data as the stream of effusion meter
Amount reading exports；During follow-up measurement, effusion meter continues measure flow and obtain described current survey
Amount data, are described reference data with the meansigma methods of described basis queuing data, calculate described when pre-test number
According to the rate of change relative to described reference data, and based on described rate of change evaluate described current measurement data and
The resonable degree of described basis queuing data.
In specific implementation process, by by described current measurement data relative to the change of described reference data
Rate and a preset value are compared to evaluate the reasonable of described current measurement data and described basis queuing data
Degree.Concrete, refer to Fig. 3, described sub-step S22 includes that time sub-step: S221, calculating are described
Current measurement data is relative to the rate of change of described reference data, it is judged that whether described rate of change is less than or equal to one
Preset value, it is thus achieved that the first judged result；S222, when described first judged result is for being, it is thus achieved that show institute
State the evaluation result that current measurement data is valid data.
Concrete, above-mentioned it is stated that, in flow industry generally, the flow in technological process will not
Undergo mutation, in practical operation, when the current measurement data of measured acquisition is relative to described reference data
Rate of change less than certain amplitude (not higher than 20% or be not less than 20% described reference data) time,
So can determine that described current measurement data is valid data；Further, perform step S3, will described the
One valid data of the storage of queuing data Central Plains, basis described in one memory element are deleted and (are usually stored list
First bit data of unit), and it is (generally described that described current measurement data is stored in described first memory element
Current measurement data fills into last position of memory element), queue based on the most described current measurement data one-tenth
Valid data in data, it is thus achieved that new basic queuing data, are simultaneously based on new basic queuing data
Average, and export as final flow rate reading using this meansigma methods.
Relative, during reality is measured, described current measurement data is relative to the change of described reference data
There is excessive situation in rate, then it is assumed that described current measurement data is invalid data, and gets rid of this data,
But there is certain risk in this operation, such as, in actual applications because needing especially, to process duct
Road carries out the operation such as high pressure rinse or washing scale removal sterilization, or abnormal conditions occurs in production, process pipe
Middle fluid flow can be undergone mutation, and makes flow instantaneous value generation acute variation, at this moment needs the effusion meter can be anti-
This acute variation should be gone out, to reflect the truth of fluid flow in process pipe.To this, in order to
When obtaining sudden change flow measuring data and exceeding certain time and repeat degree, determine that operating mode flow really occurs
Acute variation, and export the effective discharge reading for this operating mode, and reflect the flow truth of flow process.
To this, in still another embodiment herein, described effusion meter also includes with described first memory element not
With the second memory element, it is different that described raw measurement data also includes being stored in described second memory element
Regular data, referring still to Fig. 3, after performing described sub-step S221, described sub-step S22 is also
Including following sub-step:
S223, when described first judged result is no, determine that described current measurement data is abnormal data,
And described current measurement data is stored in described second memory element；
S224, described current measurement data preserve after, add up and judge in described second memory element
It is stored in the abnormal data of predetermined number the most continuously, it is thus achieved that the second judged result；
S225, when described second judged result is for being, it is thus achieved that show the exception in described second memory element
Data are the evaluation result of valid data, and when described second judged result is no, it is thus achieved that show described
Current measurement data be abnormal data and described basis queuing data be the evaluation result of valid data.
Specifically, exceed relative to the rate of change of described reference data when the current measurement data measuring acquisition
During certain amplitude (reference data as described in higher than 20% or less than 20%), by described when pre-test number
According to being stored in described second memory element, then add up and judge described second memory element is stored in the most continuously
The abnormal data of predetermined number；On the one hand, predetermined number it is stored in continuously when determining in described second memory element
During the abnormal data of (such as 15,20 etc.), determine the abnormal number of predetermined number in described second memory element
According to for valid data, now when performing step S3, choose the part in described second memory element or complete
Portion's data replace the measurement data of the same number in described first memory element, then to described first storage
Measurement data in unit is averaged, and exports using this meansigma methods as final flow rate reading；Another
Aspect, when determining the abnormal data being stored in predetermined number in described second memory element the most continuously, determines institute
State current measurement data and be abnormal data and described basis queuing data is valid data, and with described basis
The meansigma methods of queuing data exports as final flow rate reading.In specific implementation process, described flow
Meter constantly obtains new current measurement data, and carries out resonable degree evaluation as above operation, and then defeated
Go out final flow rate reading.
Sum it up, by implementing the application scheme, when carrying out flow measurement, by original measurement number
According to resonable degree be evaluated, it is thus achieved that evaluation result, and determine described original survey based on described evaluation result
Valid data in amount data, and export final flow rate reading based on described valid data；Efficiently solve
In prior art effusion meter cannot inclement condition (the flow measurement condition as on-the-spot is the most unfavorable) at the scene,
Serious interference and carry out the technical problem of normal discharge measurement in the case of causing meter readings saltus step, it is achieved
(as fluid flow has pulsation, fluid media (medium) to have backflow or dynamic under the conditions of the severe situ flow measurement
Swing, there are the complex working conditions such as electromagnetic interference in space), energy exclusive PCR, export correct and effective flow reading,
Technique effect with the flow truth of reflection flow process.It addition, use the application scheme to need not by increasing
Add functional part, change pipeline and constitute, reduce the mode such as electromagnetic interference in space to ensure that flowmeter survey is read
The accuracy of book, and then flow process will not be caused excessively complicated negative effect, it is not required that pay relatively
High equipment and construction cost.
Embodiment two
Based on same inventive concept, refer to Fig. 4, the embodiment of the present invention additionally provides a kind of effusion meter, bag
Include:
Raw measurement data acquiring unit 41, after starting at described effusion meter, fluid flow is surveyed
Amount, to obtain raw measurement data；
Resonable degree evaluation unit 42, for evaluating the resonable degree of described raw measurement data, it is thus achieved that evaluate
Result；
Flow reading output unit 43, for determining in described raw measurement data based on described evaluation result
Valid data, and export final flow rate reading based on described valid data.
In specific implementation process, refer to Fig. 5, described effusion meter includes the first memory element 44, described
Raw measurement data includes basis queuing data and current measurement data, raw measurement data acquiring unit 41
Including:
First data acquisition subelement 411, after starting at described effusion meter, fluid flow is surveyed
Amount, obtains described basis queuing data, and described basis queuing data is stored in the first memory element 44；
Second data acquisition subelement 412, for, after the queuing data preservation of described basis is complete, obtaining
Described current measurement data.
Further, referring still to Fig. 5, resonable degree evaluation unit 42 includes:
Reference data computation subunit 421, for based on described basis queuing data, calculating and obtain reference number
According to；
Rate of change Calculation Estimation subelement 422, is used for calculating described current measurement data relative to described reference
The rate of change of data, and evaluate described current measurement data and described basis queuing data based on described rate of change
Resonable degree, it is thus achieved that described evaluation result.
Further, please continue to refer to Fig. 5, rate of change Calculation Estimation subelement 422 includes:
First judge module 4221, for calculating the change relative to described reference data of the described current measurement data
Rate, it is judged that whether described rate of change is less than or equal to a preset value, it is thus achieved that the first judged result；
First evaluation module 4222, for when described first judged result is for being, it is thus achieved that show described currently
Measurement data is the evaluation result of valid data.
It addition, referring still to Fig. 5, described effusion meter also includes that second different from the first memory element 44 is deposited
Storage unit 45, described raw measurement data also includes the abnormal data being stored in the second memory element 45,
Rate of change Calculation Estimation subelement 422 also includes:
Determine module 4223, for obtaining described first judged result, and institute at the first judge module 4221
State the first judged result when being no, determine that described current measurement data is abnormal data, and by described current survey
Amount data are stored in the second memory element 45；
Second judge module 4224, after preserving at described current measurement data, adds up and judges the
Two memory element 45 are stored in the abnormal data of predetermined number the most continuously, it is thus achieved that the second judged result；
Second evaluation module 4225, for when described second judged result is for being, it is thus achieved that show the second storage
Abnormal data in unit 45 is the evaluation result of valid data, and when described second judged result is no
Time, it is thus achieved that show described current measurement data be abnormal data and described basis queuing data be valid data
Evaluation result.
As described above, above-mentioned effusion meter is used for realizing above-mentioned measurement of fluid flow method, so, should
The work process of effusion meter is consistent with one or more embodiments of said method, repeats the most one by one at this
?.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot
The form of the embodiment in terms of conjunction software and hardware.And, the present invention can use and wherein wrap one or more
Computer-usable storage medium containing computer usable program code (include but not limited to disk memory,
CD-ROM, optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding
The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a measurement of fluid flow method, is applied in flow meters, it is characterised in that described fluid
Flow-measuring method includes step:
S1, described effusion meter start after, fluid flow measures, to obtain raw measurement data；
S2, evaluate the resonable degree of described raw measurement data, it is thus achieved that evaluation result；
S3, determine the valid data in described raw measurement data based on described evaluation result, and based on described
Valid data output final flow rate reading.
2. measurement of fluid flow method as claimed in claim 1, it is characterised in that described effusion meter bag
Including the first memory element, described raw measurement data includes basis queuing data and current measurement data, described
Step S1 includes following sub-step:
S11, described effusion meter start after, fluid flow measures, obtain described basis number of queues
According to, and described basis queuing data is stored in described first memory element；
S12, described basis queuing data preserve complete after, obtain described current measurement data.
3. measurement of fluid flow method as claimed in claim 2, it is characterised in that described step S2 bag
Include following sub-step:
S21, based on described basis queuing data, calculate obtain reference data；
S22, calculate the described current measurement data rate of change relative to described reference data, and based on described
Rate of change evaluates described current measurement data and the resonable degree of described basis queuing data, it is thus achieved that described evaluation
Result.
4. measurement of fluid flow method as claimed in claim 3, it is characterised in that described sub-step S22
Including following sub-step:
S221, calculate the described current measurement data rate of change relative to described reference data, it is judged that described change
Whether rate is less than or equal to a preset value, it is thus achieved that the first judged result；
S222, when described first judged result is for being, it is thus achieved that show that described current measurement data is significant figure
According to evaluation result.
5. measurement of fluid flow method as claimed in claim 4, it is characterised in that described effusion meter is also
Including second memory element different from described first memory element, described raw measurement data also includes storage
Abnormal data in described second memory element, after performing described sub-step S221, described son
Step S22 also includes following sub-step:
S223, when described first judged result is no, determine that described current measurement data is abnormal data,
And described current measurement data is stored in described second memory element；
S224, described current measurement data preserve after, add up and judge in described second memory element
It is stored in the abnormal data of predetermined number the most continuously, it is thus achieved that the second judged result；
S225, when described second judged result is for being, it is thus achieved that show the exception in described second memory element
Data are the evaluation result of valid data, and when described second judged result is no, it is thus achieved that show described
Current measurement data be abnormal data and described basis queuing data be the evaluation result of valid data.
6. an effusion meter, it is characterised in that described fluid meter includes:
Raw measurement data acquiring unit, after starting at described effusion meter, fluid flow measures,
To obtain raw measurement data；
Resonable degree evaluation unit, for evaluating the resonable degree of described raw measurement data, it is thus achieved that evaluate knot
Really；
Flow reading output unit, for determining having in described raw measurement data based on described evaluation result
Effect data, and export final flow rate reading based on described valid data.
7. fluid meter as claimed in claim 6, it is characterised in that described effusion meter includes the first storage
Unit, described raw measurement data includes basis queuing data and current measurement data, described original measurement number
Include according to acquiring unit:
First data acquisition subelement, after starting at described effusion meter, fluid flow measures,
Obtain described basis queuing data, and described basis queuing data is stored in described first memory element；
Second data acquisition subelement, for, after the queuing data preservation of described basis is complete, obtaining described
Current measurement data.
8. fluid meter as claimed in claim 7, it is characterised in that described resonable degree evaluation unit bag
Include:
Reference data computation subunit, for based on described basis queuing data, calculating and obtain reference data；
Rate of change Calculation Estimation subelement, is used for calculating described current measurement data relative to described reference data
Rate of change, and based on described rate of change evaluate described current measurement data and described basis queuing data conjunction
Reason degree, it is thus achieved that described evaluation result.
9. fluid meter as claimed in claim 8, it is characterised in that described rate of change Calculation Estimation list
Unit includes:
First judge module, for calculating the change relative to described reference data of the described current measurement data
Rate, it is judged that whether described rate of change is less than or equal to a preset value, it is thus achieved that the first judged result；
First evaluation module, for when described first judged result is for being, it is thus achieved that work as pre-test described in showing
Data are the evaluation result of valid data.
10. fluid meter as claimed in claim 9, it is characterised in that described effusion meter also includes with described
The second memory element that first memory element is different, described raw measurement data also includes being stored in described second
Abnormal data in memory element, described rate of change Calculation Estimation subelement also includes:
Determine module, for obtaining described first judged result, and described first at described first judge module
When judged result is no, determine that described current measurement data is abnormal data, and by described current measurement data
It is stored in described second memory element；
Second judge module, after preserving at described current measurement data, adds up and judges described the
Two memory element are stored in the abnormal data of predetermined number the most continuously, it is thus achieved that the second judged result；
Second evaluation module, for when described second judged result is for being, it is thus achieved that show described second storage
Abnormal data in unit is the evaluation result of valid data, and when described second judged result is no,
Obtain show described current measurement data be abnormal data and described basis queuing data be commenting of valid data
Valency result.
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| CN201510196734.6A CN106153126A (en) | 2015-04-23 | 2015-04-23 | A kind of measurement of fluid flow method and effusion meter |
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| CN201510196734.6A CN106153126A (en) | 2015-04-23 | 2015-04-23 | A kind of measurement of fluid flow method and effusion meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114906902A (en) * | 2022-05-17 | 2022-08-16 | 中联环股份有限公司 | Distributed CMF membrane system process |
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