A mass flow correction method, device and equipment for a series flow meter group

Abstract

The embodiment of the present disclosure provides a flow coefficient correction method of a parallel flowmeter group. The method comprises: taking a series flowmeter group as an experimental piece of a to-be-corrected flowmeter and setting a reference flowmeter of the experimental piece; determining a first mass flow corresponding to the reference flowmeter and a second mass flow corresponding to the to-be-corrected flowmeter; determining a mass flow correction coefficient according to the first mass flow and the second mass flow; determining the number of flowmeters in the series flowmeter group, and determining a sub-mass flow correction coefficient corresponding to each flowmeter according to the number of flowmeters and the mass flow correction coefficient; and correcting the mass flow of each flowmeter through the sub-mass flow correction coefficient to realize mass flow correction of the series flowmeter group. The correction accuracy is ensured, the sub-flow correction coefficient of each flowmeter is determined, the smooth transition of the series flowmeter group in measuring the mass flow is realized, and the problem of discontinuity of the measured minimum mass flow in the switching measurement process of each flowmeter in the series laminar flowmeter group is solved.

Description

Technical Field

[0001] This invention relates to the field of flow measurement, and in particular to a method, apparatus and equipment for mass flow correction of a series flow meter group. Background Technology

[0002] In experiments, high-precision mass flow rate measurement is crucial for ensuring the accuracy of experimental results. The instrument used to measure flow rate is called a flow meter, and a combination of multiple flow meters is called a flow meter group. Flow meters with different ranges and types usually have different accuracy levels. In experiments, it is inevitable to encounter problems where the working fluid flow rate varies greatly, and a single flow meter cannot meet the measurement requirements of all working fluid flow rates. Usually, multiple flow meters with different ranges or different models can be combined in parallel or series for switching measurements. The measurement systems of two adjacent flow meters have overlapping flow measurement ranges, thereby meeting the measurement requirements of different mass flow rate ranges in experiments.

[0003] To address the issue of varying accuracy levels among different flowmeters and types used in series flowmeter arrays for measuring mass flow rate, existing technologies calibrate each flowmeter individually before use to ensure the accuracy and range of the working fluid mass flow rate measurement in experiments, thereby improving the measurement accuracy of each flowmeter.

[0004] Existing technologies cause discontinuities in mass flow measurement when switching flow meters, making it impossible to ensure a smooth transition in mass flow measurement during flow meter switching, which in turn leads to poor mass flow measurement accuracy. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems of discontinuous mass flow rate and poor mass flow rate measurement accuracy during the switching measurement process of each flow meter in a series flow meter group in the prior art. It provides a method, device and equipment for mass flow rate correction of a series flow meter group, which can correct the series flow meter group by mass flow rate coefficient to ensure that the mass flow rate measurement can be smoothly transitioned when switching flow meters.

[0006] In a first aspect, embodiments of this disclosure provide a method for correcting the mass flow rate of a series flow meter group, the method comprising:

[0007] S1: Use the series flow meter group as the flow meter to be corrected in the test piece and set the reference flow meter for the test piece;

[0008] S2: Determine the first mass flow rate corresponding to the reference flow meter and the second mass flow rate corresponding to the flow meter to be corrected;

[0009] S3: Determine the mass flow correction factor based on the first mass flow rate and the second mass flow rate;

[0010] S4: Determine the number of flow meters in the series flow meter group, and determine the sub-mass flow correction coefficient for each flow meter based on the number of flow meters and the mass flow correction coefficient;

[0011] S5: Mass flow correction is performed on each flow meter using the sub-mass flow correction coefficient to achieve mass flow correction for the series flow meter group.

[0012] Optionally, step S1 specifically includes:

[0013] S11: Determine the measurement accuracy of the series flow meter group;

[0014] S12: Set the reference flow meter according to the measurement accuracy.

[0015] Optionally, step S3 specifically includes:

[0016] S31: Determine the total number of experimental operating conditions for the series flowmeter group;

[0017] S32: Determine the ratio of the first mass flow rate and the second mass flow rate under each experimental condition;

[0018] S33: Determine the mass flow correction factor based on each ratio and the total number.

[0019] Optionally, the mass flow rate correction factor in step S33 is expressed as:

[0020]

[0021] Where ζ represents the mass flow rate correction coefficient, i represents the i-th experimental condition, and n represents the total number of experimental conditions. This represents the first mass flow rate of the experimental specimen under the i-th experimental condition. This represents the second mass flow rate of the experimental specimen under the i-th experimental condition.

[0022] Optionally, step S4 specifically includes:

[0023] S41: Determine the sum of squares of deviations of the series flow meter group and the relationship of correction coefficients between two adjacent flow meters based on the number of flow meters; S42: Determine the correction coefficients for each sub-mass flow rate based on the sum of squares of deviations and the relationship of correction coefficients.

[0024] Optionally, the sum of squared deviations in step S41 is expressed as:

[0025]

[0026] Where M represents the sum of squared deviations, r represents the number of flow meters, j represents the j-th flow meter, and ζ j Let n represent the mass flow rate correction factor for the j-th flow meter, i represent the i-th experimental condition, and n represent the mass flow rate correction factor for the j-th flow meter.j This represents the total number of experimental operating conditions for the j-th flow meter. This represents the mass flow rate measured by the j-th flow meter under the i-th experimental condition.

[0027] Optionally, the relationship of the correction coefficients in step S41 is expressed as follows:

[0028]

[0029] Where j represents the j-th flow meter, ζ j+1 ζ represents the mass flow correction factor for the (j+1)th flow meter. j Let n represent the mass flow rate correction factor for the j-th flow meter, i represent the i-th experimental condition, and n represent the mass flow rate correction factor for the j-th flow meter. j This represents the total number of experimental operating conditions for the j-th flow meter. This represents the mass flow rate measured by the j-th flow meter under the i-th experimental condition. This represents the mass flow rate measured by the (j+1)th flow meter under the i-th experimental condition.

[0030] Secondly, embodiments of this disclosure also provide a mass flow correction device for a series flow meter group, the device comprising:

[0031] The flow meter setting module is used to use a series flow meter group as the flow meter to be corrected in the test piece and to set the reference flow meter in the test piece.

[0032] The mass flow rate determination module is used to determine the first mass flow rate corresponding to the reference flow meter and the second mass flow rate corresponding to the flow meter to be corrected.

[0033] The mass flow rate correction factor determination module is used to determine the mass flow rate correction factor based on the first mass flow rate and the second mass flow rate; the sub-mass flow rate correction factor determination module is used to determine the number of flow meters in the series flow meter group, and determine the sub-mass flow rate correction factor corresponding to each flow meter based on the number of flow meters and the mass flow rate correction factor.

[0034] The mass flow correction module is used to correct the mass flow of each flow meter by using a sub-mass flow correction coefficient, so as to realize the mass flow correction of the series flow meter group.

[0035] Thirdly, embodiments of this disclosure also provide an electronic device, the electronic device comprising:

[0036] At least one processor; and

[0037] A memory that is communicatively connected to at least one processor; wherein,

[0038] When a memory stores a computer program that can be executed by at least one processor, the computer program is executed by at least one processor to enable the at least one processor to perform a mass flow rate correction method for a series flow meter group as described in any embodiment of the present disclosure.

[0039] Fourthly, embodiments of this disclosure provide a computer-readable storage medium having a computer program stored thereon that, when executed by a processor, implements a mass flow rate correction method for a series flow meter group as described in any embodiment of this disclosure.

[0040] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description.

[0041] Therefore, the present invention has the following beneficial effects:

[0042] 1. The mass flow correction method, which uses mass flow rate as the correction benchmark, ensures the accuracy of the correction.

[0043] 2. Determining the sub-flow correction factor for each flow meter allows for a smooth transition when measuring mass flow rate in a series flow meter group.

[0044] 3. The problem of discontinuous measurement of the minimum mass flow rate during the switching measurement process of each flow meter in a series laminar flow meter group has been solved. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a flowchart of a mass flow rate correction method for a series flow meter group according to Embodiment 1 of the present invention;

[0047] Figure 2 This is a flowchart of another mass flow rate correction method for a series flow meter group provided in Embodiment 1 of the present invention;

[0048] Figure 3 This is a flowchart of another mass flow rate correction method for a series flow meter group provided in Embodiment 1 of the present invention;

[0049] Figure 4 This is a flowchart of another mass flow rate correction method for a series flow meter group provided in Embodiment 1 of the present invention;

[0050] Figure 5 This is a schematic diagram of a flow measurement correction experimental system provided in Embodiment 2 of the present invention;

[0051] Figure 6 This is a schematic diagram of the mass flow characteristic curve of the switching measurement between two laminar flow meters according to Embodiment 2 of the present invention.

[0052] Figure 7 This is a schematic diagram of the mass flow characteristic curve for switching measurement between two laminar flow meters according to Embodiment 2 of the present invention;

[0053] Figure 8 This is a schematic diagram of a mass flow correction device for a series flow meter group according to Embodiment 3 of the present invention;

[0054] Figure 9 This is a schematic diagram of the structure of an electronic device provided according to Embodiment 4 of the present invention.

[0055] Among them, 1. Experimental bench inlet, 2. Flow meter 1#, 3. Flow meter 2#, 4. Experimental section, 5. Experimental bench outlet. Detailed Implementation

[0056] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0057] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0058] Example 1

[0059] Figure 1This document provides a flowchart of a mass flow rate correction method for a series flow meter array according to Embodiment 1 of the present invention. This embodiment is applicable to situations where a series flow meter array is used to measure experimental specimens. The method can be executed by the mass flow rate correction device for the series flow meter array provided in this disclosure. This device can be implemented in software and / or hardware and is generally integrated into a computer device. The method of this disclosure specifically includes:

[0060] S1: Use the series flow meter group as the flow meter to be corrected in the test piece and set the reference flow meter for the test piece.

[0061] In this context, a flow meter refers to an instrument that measures flow rate. Flow meters can be categorized into orifice plate flow meters, venturi flow meters, turbine flow meters, vortex flow meters, target flow meters, rotor flow meters, volumetric flow meters, ultrasonic flow meters, etc. A flow meter group refers to a combination of multiple flow meters. In this embodiment, it mainly refers to switching between flow meters with different ranges or models by connecting them in series. A reference flow meter is a flow meter used as a reference under the same experimental conditions as the series-connected flow meter group. This embodiment uses a laminar flow meter for illustration.

[0062] Figure 2 The flowchart of a mass flow rate correction method for a series flow meter group is provided in Embodiment 1 of the present invention. Step S1 mainly includes the following steps S11 to S12.

[0063] S11: Determine the measurement accuracy of the series flow meter group.

[0064] S12: Set the reference flow meter according to the measurement accuracy.

[0065] Specifically, the reference flow meter can be set by determining the measurement accuracy of the series flow meter group, so that the measurement accuracy level of the reference flow meter is higher. Measurement accuracy refers to the degree of consistency between the measurement result and the true value.

[0066] S2: Determine the first mass flow rate corresponding to the reference flow meter and the second mass flow rate corresponding to the flow meter to be corrected.

[0067] S3: Determine the mass flow correction factor based on the first mass flow rate and the second mass flow rate.

[0068] Figure 3 The flowchart of the mass flow rate correction method for a series flow meter group provided in Embodiment 1 of the present invention is shown. Step S3 mainly includes the following steps S31 to S33.

[0069] S31: Determine the total number of experimental operating conditions for the series flowmeter group.

[0070] S32: Determine the ratio of the first mass flow rate and the second mass flow rate under each experimental condition.

[0071] S33: Determine the mass flow correction factor based on each ratio and the total number.

[0072] Optionally, the mass flow rate correction factor in step S33 is expressed as:

[0073]

[0074] Where ζ represents the mass flow rate correction coefficient, i represents the i-th experimental condition, and n represents the total number of experimental conditions. This represents the first mass flow rate of the experimental specimen under the i-th experimental condition. This represents the second mass flow rate of the experimental specimen under the i-th experimental condition.

[0075] S4: Determine the number of flow meters in the series flow meter group, and determine the sub-mass flow correction coefficient for each flow meter based on the number of flow meters and the mass flow correction coefficient.

[0076] Figure 4 The flowchart of the mass flow rate correction method for a series flow meter group provided in Embodiment 1 of the present invention is shown. Step S3 mainly includes the following steps S41 to S42.

[0077] S41: Determine the sum of squares of deviations of the series flow meter group and the relationship of correction coefficients between two adjacent flow meters based on the number of flow meters.

[0078] Specifically, for flow measurement systems with two or more laminar flow meters connected in series, the least squares algorithm is used to perform linear regression to obtain the flow correction coefficient of each flow measurement system in the series system. This ensures both the measurement accuracy of each flow measurement system and a smooth transition when switching between them.

[0079] Optionally, the sum of squared deviations in step S41 is expressed as:

[0080]

[0081] Where M represents the sum of squared deviations, r represents the number of flow meters, j represents the j-th flow meter, and ζ j Let n represent the mass flow rate correction factor for the j-th flow meter, i represent the i-th experimental condition, and n represent the mass flow rate correction factor for the j-th flow meter. j This represents the total number of experimental operating conditions for the j-th flow meter. This represents the mass flow rate measured by the j-th flow meter under the i-th experimental condition.

[0082] Specifically, if there are r flow measurement systems connected in series in the experiment, and their flow measurement ranges are denoted as 1, 2, ..., r in ascending order, then the correction coefficient of the j-th flow measurement system is denoted as ζ.j The mass flow rate to be corrected is denoted as The corrected mass flow rate can then be denoted as:

[0083] Optionally, the relationship of the correction coefficients in step S41 is expressed as follows:

[0084]

[0085] Where j represents the j-th flow meter, ζ j+1 ζ represents the mass flow correction factor for the (j+1)th flow meter. j Let n represent the mass flow rate correction factor for the j-th flow meter, i represent the i-th experimental condition, and n represent the mass flow rate correction factor for the j-th flow meter. j This represents the total number of experimental operating conditions for the j-th flow meter. This represents the mass flow rate measured by the j-th flow meter under the i-th experimental condition. This represents the mass flow rate measured by the (j+1)th flow meter under the i-th experimental condition.

[0086] S42: Determine the correction coefficient for each sub-mass flow rate based on the sum of squared deviations and the relationship between the correction coefficients.

[0087] Specifically, j changes from 1 to r-1. At this point, M in equation (2) can be expressed as the correction coefficient ζ of the j-th laminar flow meter. j The quadratic function, i.e., M = M(ζ j The condition for minimizing the sum of squares of the deviations is:

[0088]

[0089] Where M represents the sum of squared deviations, j represents the j-th flow meter, and ζ j Let represent the mass flow correction coefficient of the j-th flow meter. Then, the mass flow correction coefficient of each flow meter can be obtained by combining formulas (2), (3) and (4).

[0090] S5: Mass flow correction is performed on each flow meter using the sub-mass flow correction coefficient to achieve mass flow correction for the series flow meter group.

[0091] Specifically, for a flowmeter group consisting of multiple laminar flowmeters connected in series, where the measurement ranges of two adjacent laminar flowmeters overlap, a mass flow correction method with mass flow rate as the correction benchmark is adopted. The correction coefficients of each laminar flowmeter are obtained through least squares linear regression. This enables a smooth transition in the flow rate measurement of each flowmeter when switching flow measurement systems in the experiment, improves the measurement accuracy of the mass flow rate of the flowing working medium within the measurement range of the switching measurement system, and solves the problem of discontinuous measurement of the minimum mass flow rate during the switching measurement process of each flowmeter in a series laminar flowmeter group.

[0092] The technical solution of this invention uses a series flowmeter group as the flowmeter to be corrected in the experiment and sets a reference flowmeter according to the measurement accuracy of the series flowmeter group; it determines the first mass flow rate corresponding to the reference flowmeter and the second mass flow rate corresponding to the flowmeter to be corrected, and uses the average value of the ratio of the first mass flow rate and the second mass flow rate under each experimental condition as the mass flow rate correction coefficient. It determines the sub-mass flow rate correction coefficient corresponding to each flowmeter according to the number of flowmeters and the mass flow rate correction coefficient; by correcting the mass flow rate of each flowmeter through the sub-mass flow rate correction coefficient, the mass flow rate measurement of the series flowmeter group can be smoothly transitioned when switching flowmeters, which improves the measurement accuracy of the mass flow rate of the flowing working medium within the measurement range of the switching measurement system and solves the problem of discontinuous measurement of the minimum mass flow rate during the switching measurement process of each flowmeter in the series laminar flowmeter group.

[0093] Example 2

[0094] This embodiment is a method for correcting the mass flow rate of a series flow meter group. Based on the above embodiment one, this embodiment adds an application scenario to specifically explain the mass flow rate correction process of the flow meter.

[0095] Figure 5 This embodiment provides a schematic diagram of the structure of a flow measurement correction experimental system. Figure 5 In the diagram, 1 represents the inlet of the experimental platform, 2 represents flow meter #1, 3 represents flow meter #2, 4 represents the experimental section, and 5 represents the outlet of the experimental platform. In this embodiment, the flow meters requiring correction are flow meter #1 and flow meter #2. Both of these flow meters are laminar flow meters, connected in series to form a series flow meter group, with the measured flow rates increasing sequentially. The flow measurement correction experimental system consists of these two laminar flow meters, the experimental platform itself, and related pipes and valves. Each laminar flow meter is connected to a rectifier section of corresponding length before and after it. The inlet is connected to the laboratory gas supply system via a gas source processor, and the outlet is connected to the experimental platform via the inlet section of the experimental platform.

[0096] Furthermore, the measurement conditions need to be determined. Since the flow measurement correction experiment is based on two flow measurement systems with overlapping ranges, the experimental conditions should be set within this range. In this embodiment, for the correction experiment of laminar flow meter 1# and laminar flow meter 2#, the experimental conditions are selected as 150mg / s, 200mg / s, 250mg / s, 300mg / s, 350mg / s, 400mg / s, and 450mg / s.

[0097] Specifically, measurements are performed according to the measurement conditions to obtain quality characteristic curves. Figure 6 This embodiment provides a schematic diagram of the corrected mass flow characteristic curve measured between two laminar flow meters during switching. Figure 6 In the diagram, the vertical axis represents the flow meter value, the horizontal axis represents the set flow rate, the black square represents the mass flow characteristic line before correction for flow meter 1#, and the black triangle represents the mass flow characteristic line before correction for flow meter 2#. It can be seen that under the same operating conditions, the flow coefficient measured by flow meter 1# is greater than that measured by flow meter 2#, with a maximum absolute deviation of 16.9 mg / s and a maximum relative deviation of 7.9%.

[0098] Furthermore, the sub-flow correction coefficients of the two laminar flow meters can be obtained according to equation (1) in Example 1. Figure 7 This embodiment provides a schematic diagram of the mass flow characteristic curve for switching between two laminar flow meters after modification. Figure 7 In the graph, the vertical axis represents the flow meter value, and the horizontal axis represents the set flow rate. The black square represents the corrected mass flow characteristic line corresponding to flow meter 1#, and the black triangle represents the corrected mass flow characteristic line corresponding to flow meter 2#. The correction coefficients for the laminar flow meter 1# and laminar flow meter 2# measurement systems, calculated using the least squares method, are 0.998 and 0.952, respectively. Comparing the mass flow rate changes before and after correction, it can be seen that the maximum deviation between the mass flow rates measured by laminar flow meter 1# and laminar flow meter 2# has been reduced to 0.2% after correction. Compared to before correction, the transition of the measured flow rates between the flow meters is smoother.

[0099] The technical solution of this invention uses a series flowmeter group as the flowmeter to be corrected in the experiment and sets a reference flowmeter according to the measurement accuracy of the series flowmeter group; it determines the first mass flow rate corresponding to the reference flowmeter and the second mass flow rate corresponding to the flowmeter to be corrected, and uses the average value of the ratio of the first mass flow rate and the second mass flow rate under each experimental condition as the mass flow rate correction coefficient. It determines the sub-mass flow rate correction coefficient corresponding to each flowmeter according to the number of flowmeters and the mass flow rate correction coefficient; by correcting the mass flow rate of each flowmeter through the sub-mass flow rate correction coefficient, the mass flow rate measurement of the series flowmeter group can be smoothly transitioned when switching flowmeters, which improves the measurement accuracy of the mass flow rate of the flowing working medium within the measurement range of the switching measurement system and solves the problem of discontinuous measurement of the minimum mass flow rate during the switching measurement process of each flowmeter in the series laminar flowmeter group.

[0100] Example 3

[0101] Figure 8 This is a schematic diagram of a mass flow rate correction device for a series flow meter group provided in Embodiment 3 of the present invention. This device can be implemented using software and / or hardware, and is generally integrated into the electronic device performing the method. For example... Figure 8 As shown, the device includes: a flow meter setting module 310, used to set the series flow meter group as the flow meter to be corrected in the test piece and to set the reference flow meter of the test piece; and a mass flow rate determination module 320, used to determine the first mass flow rate corresponding to the reference flow meter and the second mass flow rate corresponding to the flow meter to be corrected.

[0102] The mass flow rate correction coefficient determination module 330 is used to determine the mass flow rate correction coefficient based on the first mass flow rate and the second mass flow rate; the sub-mass flow rate correction coefficient determination module 340 is used to determine the number of flow meters in the series flow meter group, and determine the sub-mass flow rate correction coefficient corresponding to each flow meter based on the number of flow meters and the mass flow rate correction coefficient; the mass flow rate correction module 350 is used to perform mass flow rate correction on each flow meter through the sub-mass flow rate correction coefficient, so as to realize the mass flow rate correction of the series flow meter group.

[0103] Optionally, the flow meter setting module 310 is specifically used to: determine the measurement accuracy of the series flow meter group; and set a reference flow meter based on the measurement accuracy.

[0104] Optionally, the mass flow rate correction coefficient determination module 330 is specifically used to: determine the total number of experimental operating conditions for the series flow meter group; determine the ratio of the first mass flow rate and the second mass flow rate under each experimental operating condition; and determine the mass flow rate correction coefficient based on each ratio and the total number.

[0105] Optionally, the mass flow rate correction factor in the mass flow rate correction factor determination module 330 is expressed as follows:

[0106]

[0107] Where ζ represents the mass flow rate correction coefficient, i represents the i-th experimental condition, and n represents the total number of experimental conditions. This represents the first mass flow rate of the experimental specimen under the i-th experimental condition. This represents the second mass flow rate of the experimental specimen under the i-th experimental condition.

[0108] Optionally, the sub-mass flow rate correction coefficient determination module 340 is specifically used to: determine the sum of squares of the deviations of the series flow meter group and the relationship of the correction coefficients between two adjacent flow meters based on the number of flow meters; and determine the correction coefficients of each sub-mass flow rate based on the sum of squares of the deviations and the relationship of the correction coefficients.

[0109] Optionally, the sum of squared deviations in the mass flow rate correction factor determination module 340 is expressed as:

[0110]

[0111] Where M represents the sum of squared deviations, r represents the number of flow meters, j represents the j-th flow meter, and ζ j Let n represent the mass flow rate correction factor for the j-th flow meter, i represent the i-th experimental condition, and n represent the mass flow rate correction factor for the j-th flow meter. j This represents the total number of experimental operating conditions for the j-th flow meter. This represents the mass flow rate measured by the j-th flow meter under the i-th experimental condition.

[0112] Optionally, the relationship of the correction coefficients in the mass flow rate correction coefficient determination module 340 is expressed as follows:

[0113]

[0114] Where j represents the j-th flow meter, ζ j+1 ζ represents the mass flow correction factor for the (j+1)th flow meter. j Let n represent the mass flow rate correction factor for the j-th flow meter, i represent the i-th experimental condition, and n represent the mass flow rate correction factor for the j-th flow meter. j This represents the total number of experimental operating conditions for the j-th flow meter. This represents the mass flow rate measured by the j-th flow meter under the i-th experimental condition. This represents the mass flow rate measured by the (j+1)th flow meter under the i-th experimental condition.

[0115] The technical solution of this invention uses a series flowmeter group as the flowmeter to be corrected in the experiment and sets a reference flowmeter according to the measurement accuracy of the series flowmeter group; it determines the first mass flow rate corresponding to the reference flowmeter and the second mass flow rate corresponding to the flowmeter to be corrected, and uses the average value of the ratio of the first mass flow rate and the second mass flow rate under each experimental condition as the mass flow rate correction coefficient. It determines the sub-mass flow rate correction coefficient corresponding to each flowmeter according to the number of flowmeters and the mass flow rate correction coefficient; by correcting the mass flow rate of each flowmeter through the sub-mass flow rate correction coefficient, the mass flow rate measurement of the series flowmeter group can be smoothly transitioned when switching flowmeters, which improves the measurement accuracy of the mass flow rate of the flowing working medium within the measurement range of the switching measurement system and solves the problem of discontinuous measurement of the minimum mass flow rate during the switching measurement process of each flowmeter in the series laminar flowmeter group.

[0116] The mass flow correction device for a series flow meter group provided in the embodiments of the present invention can execute the mass flow correction method for a series flow meter group provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the method.

[0117] Example 4

[0118] Figure 9 This is a schematic diagram of the structure of an electronic device 400 provided in Embodiment 4 of the present invention. The electronic device in this embodiment can be a device corresponding to the backend service platform of an application, or a mobile terminal device with an application client installed. Specifically, the electronic device can include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), and in-vehicle terminals (e.g., in-vehicle navigation terminals), as well as fixed terminals such as digital TVs and desktop computers. Figure 9 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments disclosed herein.

[0119] like Figure 8 As shown, electronic device 400 may include a processing device (e.g., a central processing unit, a graphics processor, etc.) 401, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 402 or a program loaded from storage device 408 into random access memory (RAM) 403. RAM 403 also stores various programs and data required for the operation of electronic device 400. Processing device 401, ROM 402, and RAM 403 are interconnected via bus 404. Input / output (I / O) interface 405 is also connected to bus 404.

[0120] Typically, the following devices can be connected to I / O interface 405: input devices 406 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 407 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 408 including, for example, magnetic tapes, hard disks, etc.; and communication devices 409. Communication device 409 allows electronic device 400 to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 3 An electronic device 400 with various devices is shown; however, it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed alternatively.

[0121] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication device 409, or installed from storage device 408, or installed from ROM 402. When the computer program is executed by processing device 401, it performs the functions defined in the methods of embodiments of this disclosure.

[0122] It should be noted that the computer-readable medium described in this disclosure can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this disclosure, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this disclosure, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0123] In some implementations, clients and servers can communicate using any currently known or future-developed network protocol such as HTTP (Hypertext Transfer Protocol) and can interconnect with digital data communication (e.g., communication networks) of any form or medium. Examples of communication networks include local area networks (“LANs”), wide area networks (“WANs”), the Internet (e.g., the Internet of Things), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future-developed networks.

[0124] The aforementioned computer-readable medium may be included in the aforementioned electronic device; or it may exist independently and not assembled into the electronic device.

[0125] The aforementioned computer-readable medium carries one or more programs that, when executed by the electronic device, cause internal processes of the electronic device to perform the following: using a series flowmeter group as the flowmeter to be corrected in an experiment and setting a reference flowmeter for the experiment; determining a first mass flow rate corresponding to the reference flowmeter and a second mass flow rate corresponding to the flowmeter to be corrected; determining a mass flow rate correction coefficient based on the first mass flow rate and the second mass flow rate; determining the number of flowmeters in the series flowmeter group, and determining a sub-mass flow rate correction coefficient corresponding to each flowmeter based on the number of flowmeters and the mass flow rate correction coefficient; and performing mass flow rate correction on each flowmeter using the sub-mass flow rate correction coefficient to achieve mass flow rate correction of the series flowmeter group.

[0126] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including but not limited to object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0127] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0128] The units described in the embodiments of this disclosure can be implemented in software or in hardware. The names of the units are not, in some cases, intended to limit the specific unit.

[0129] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0130] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0131] The above description is merely a preferred embodiment of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features disclosed in this disclosure that have similar functions.

[0132] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0133] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

Claims

1. A method for correcting the mass flow rate of a series flow meter group, characterized in that, Includes the following steps: S1: Use the series flow meter group as the flow meter to be corrected in the test piece and set the reference flow meter of the test piece; S2: Determine the first mass flow rate corresponding to the reference flow meter and the second mass flow rate corresponding to the flow meter to be corrected; S3: Determine the mass flow rate correction factor based on the first mass flow rate and the second mass flow rate; S4: Determine the number of flow meters in the series flow meter group, and determine the sub-mass flow correction coefficient corresponding to each flow meter based on the number of flow meters and the mass flow correction coefficient; S5: Mass flow correction is performed on each of the flow meters using the sub-mass flow correction coefficient to achieve mass flow correction of the series flow meter group.

2. The mass flow rate correction method for a series flow meter group according to claim 1, characterized in that, Step S1 specifically includes: S11: Determine the measurement accuracy of the series flow meter group; S12: Set the reference flow meter according to the measurement accuracy.

3. The mass flow rate correction method for a series flow meter group according to claim 1, characterized in that, Step S3 specifically includes: S31: Determine the total number of experimental operating conditions for the series flowmeter group; S32: Determine the ratio of the first mass flow rate to the second mass flow rate under each of the experimental conditions; S33: Determine the mass flow correction coefficient based on each of the ratios and the total number.

4. The mass flow rate correction method for a series flow meter group according to claim 3, characterized in that, The mass flow rate correction factor in step S33 is expressed as follows: Where ζ represents the mass flow rate correction coefficient, i represents the i-th experimental condition, and n represents the total number of experimental conditions. This represents the first mass flow rate of the experimental specimen under the i-th experimental condition. This represents the second mass flow rate of the experimental specimen under the i-th experimental condition.

5. The method for correcting the mass flow rate of a series flow meter group according to claim 1, characterized in that, Step S4 specifically includes: S41: Determine the sum of squares of the deviations of the series flow meter group and the relationship of the correction coefficients between two adjacent flow meters based on the number of flow meters; S42: Determine the correction coefficient for each of the sub-mass flow rates based on the sum of squared deviations and the relationship between the correction coefficients.

6. The mass flow rate correction method for a series flow meter group according to claim 5, characterized in that, The sum of squared deviations in step S41 is expressed as follows: Where M represents the sum of squared deviations, r represents the number of flow meters, j represents the j-th flow meter, and ζ j Let n represent the mass flow rate correction factor for the j-th flow meter, i represent the i-th experimental condition, and n represent the mass flow rate correction factor for the j-th flow meter. j This represents the total number of experimental operating conditions for the j-th flow meter. This represents the mass flow rate measured by the j-th flow meter under the i-th experimental condition.

7. The mass flow rate correction method for a series flow meter group according to claim 5, characterized in that, The relationship of the correction coefficients in step S41 is expressed as follows: Where j represents the j-th flow meter, ζ j+1 ζ represents the mass flow correction factor for the (j+1)th flow meter. j Let n represent the mass flow rate correction factor for the j-th flow meter, i represent the i-th experimental condition, and n represent the mass flow rate correction factor for the j-th flow meter. j This represents the total number of experimental operating conditions for the j-th flow meter. This represents the mass flow rate measured by the j-th flow meter under the i-th experimental condition. This represents the mass flow rate measured by the (j+1)th flow meter under the i-th experimental condition.

8. A mass flow correction device for a series flow meter group, characterized in that, include: The flow meter setting module is used to use the series flow meter group as the flow meter to be corrected in the test piece and to set the reference flow meter of the test piece; A mass flow rate determination module is used to determine the first mass flow rate corresponding to the reference flow meter and the second mass flow rate corresponding to the flow meter to be corrected. A mass flow rate correction factor determination module is used to determine a mass flow rate correction factor based on the first mass flow rate and the second mass flow rate; The sub-mass flow rate correction coefficient determination module is used to determine the number of flow meters in the series flow meter group, and to determine the sub-mass flow rate correction coefficient corresponding to each flow meter based on the number of flow meters and the mass flow rate correction coefficient; The mass flow correction module is used to correct the mass flow of each flow meter by means of the sub-mass flow correction coefficient, so as to realize the mass flow correction of the series flow meter group.

9. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-7.

10. A computer storage medium, characterized in that, The computer storage medium stores computer instructions. The computer instructions are used to cause the processor to execute the method of any one of claims 1-7.

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