CN107131947A - Determine vibrating sensor zero point - Google Patents
Determine vibrating sensor zero point Download PDFInfo
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- CN107131947A CN107131947A CN201610106050.7A CN201610106050A CN107131947A CN 107131947 A CN107131947 A CN 107131947A CN 201610106050 A CN201610106050 A CN 201610106050A CN 107131947 A CN107131947 A CN 107131947A
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- gauge assembly
- zero point
- vibrating sensor
- meter electronics
- communication channel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
Determine vibrating sensor zero point.A kind of method for determining vibrating sensor zero point is provided.This method includes mark and is communicatively coupled to the first gauge assembly of Meter electronics and selects to correspond to the mechanical zero of the first identified gauge assembly.
Description
Technical field
The embodiments described below is related to vibrating sensor, and relates more specifically to determine vibrating sensor zero point.
Background technology
The vibrating sensor of such as vibration densitometer and coriolis flowmeter etc is commonly known, and by
For measuring quality stream and the other information relevant with the material flowed by the conduit in flowmeter.In United States Patent (USP) 4,109,
524th, United States Patent (USP) 4,491,025 and bibliography 31,450（Re. 31,450）In disclose exemplary Coriolis flow
Meter.These flowmeters have the conduit of one or more straight or curved configurations.Each leading in coriolis mass flowmeters
Pipe is configured for example with one group of eigentone, and it can have simple bending, torsion or coupling type.Each conduit can be with
It is driven into and vibrates in a preferred mode.
It is directed through from the material in the connecting pipeline inflow flowmeter on the entrance side of flowmeter（It is multiple）Conduit, and
And flowmeter is left by the outlet side of flowmeter.The eigentone of vibrational system is partly by leading the material of Bottomhole pressure
Limited with the combination quality of conduit.
When no flow is by flowmeter, it is applied to（It is multiple）The driving force of conduit promote along（It is multiple）The institute of conduit
A little with identical phase or with small " zero offset "（It is the time delay measured under zero delivery）Vibration.When material starts
When flowing through flowmeter, Coriolis force promote along（It is multiple）Each point of conduit has different phases.For example, in flowmeter
Phase at arrival end lags behind the phase at central actuator position, and the phase in exit is ahead of central actuator position
The phase at place.（It is multiple）Supravasal pickup device（pickoff）Produce expression（It is multiple）The sinusoidal signal of the motion of conduit.From
The signal of pickup device output is processed to determine the time delay between the pickup device.Two or more pickup devices
Between time delay with flowing through（It is multiple）The mass flow rate of the material of conduit is proportional.
It is connected to the drive signal of the Meter electronics generation function driver of driver and always according to first from pickup
The signal that part is received determines the mass flow rate and/or other properties of rapidoprint.Driver can include many known cloth
One in putting；However, magnet and relative driving coil have been obtained for immense success in flowmeter industry.By alternation electricity
Stream is delivered to driving coil to vibrate with desired conduit amplitude and frequency（It is multiple）Conduit.It is also known to the art that will pick up
Element is taken to be provided as arranging that very similar magnet and coil are arranged with driver.However, when driver receives paratonic movement
Electric current when, pickup device can use the motion provided by driver come induced voltage.
Many applications utilize two or more vibrating sensors due to various system restrictions.For example, institute's refuelling is
Liquefied natural gas（LNG）Vehicle the combustion that LNG vehicles are pumped into from LNG accumulator tanks can be measured using the first vibrating sensor
Material.Second vibrating sensor can be used to measure the fuel for returning to LNG tank.Returning to the fuel of LNG tank can have not
Cocurrent flow speed, temperature etc..Therefore, the first and second vibrating sensors can be different types of.That is, first and
Two vibrating sensors can have different resonant frequencies,（It is multiple）Pipe size and/or shape etc..Determine accordingly, there exist Dui
The need for vibrating sensor zero point.
The content of the invention
A kind of method for determining vibrating sensor zero point is provided.According to one embodiment, this method includes：Mark is logical
Letter is coupled to the first gauge assembly of Meter electronics；And selection is corresponding to the first machine of the first identified gauge assembly
Tool zero point.
A kind of Meter electronics for being used to determine vibrating sensor zero point are provided.According to one embodiment, metering electricity
Sub- device includes the processor being communicatively coupled with the first gauge assembly.The processor be configured to identify the first gauge assembly and
First mechanical zero of the selection corresponding to the first identified gauge assembly.
A kind of double vibrating sensor systems for being used to determine mechanical zero are provided.According to one embodiment, this pair vibration is passed
Sensor system includes：First gauge assembly, the second gauge assembly and communicated with first gauge assembly and the second gauge assembly
The Meter electronics of coupling.The Meter electronics are configured to identify the first gauge assembly, and selection corresponds to and marked
First mechanical zero of the first gauge assembly known.
Aspect。
It is a kind of to be used to determine that the method for vibrating sensor zero point includes according on one side：Mark is communicatively coupled to metering
First gauge assembly of electronic device；And selection is corresponding to the first mechanical zero of the first identified gauge assembly.
Preferably, this method also includes the second gauge assembly that mark is communicatively coupled to Meter electronics；And selection
Corresponding to the second mechanical zero of the second gauge assembly identified.
Preferably, at least one in the first gauge assembly and the second gauge assembly is logical via first communication channel and second
At least one in letter channel is communicatively coupled to Meter electronics, and wherein first communication channel is related to the first electric zero point
Connection, and the second communication channel is associated with the second electric zero point.
Preferably, this method also includes determining in the first vibrating sensor zero point and the second vibrating sensor zero point at least
One, wherein the first vibrating sensor zero point includes one in the following：
；And
；And
Second vibrating sensor zero point includes one in the following：
；And
；
Wherein described item is：
It is first mechanical zero corresponding with the first gauge assembly；
It is second mechanical zero corresponding with the second gauge assembly；
It is the electric zero point of first corresponding with first communication channel；
It is the electric zero point of second corresponding with the second communication channel；
It is the first vibrating sensor zero point, wherein the first gauge assembly is communicatively coupled to metering via first communication channel
Electronic device；
It is the first vibrating sensor zero point, wherein the second gauge assembly is communicatively coupled to metering via first communication channel
Electronic device；
It is the second vibrating sensor zero point, wherein the first gauge assembly is communicatively coupled to metering via the second communication channel
Electronic device；And
It is the second vibrating sensor zero point, wherein the second gauge assembly is communicatively coupled to metering via the second communication channel
Electronic device.
Preferably, at least one in the first mechanical zero and the second mechanical zero includes previously determined mechanical zero,
The previously determined mechanical zero is by measuring when in the absence of flow one in the first gauge assembly and the second gauge assembly
Individual difference and obtain.
Preferably, at least one in the first gauge assembly of mark and the second gauge assembly includes：From the first gauge assembly
Parameter is obtained with least one in the second gauge assembly；And by the parameter obtained and be stored in Meter electronics
Value is compared, wherein the value being stored in Meter electronics be previously from the first gauge assembly and the second gauge assembly
What at least one was obtained.
According to one side, a kind of Meter electronics for being used to determine vibrating sensor zero point（100）Including：With first
Gauge assembly（10a）The processor of communicative couplings（110）, the processor（110）It is configured to identify the first gauge assembly（10a）
And selection corresponds to the first identified gauge assembly（10a）The first mechanical zero.
Preferably, the processor（110）It is further configured to mark and is communicatively coupled to Meter electronics（100）
Two gauge assemblies（10b）；And selection corresponds to the second gauge assembly（10b）The second mechanical zero.
Preferably, the first gauge assembly（10a）With the second gauge assembly（10b）In at least one via first communication believe
Road（112a）With the second communication channel（112b）In at least one be communicatively coupled to Meter electronics（100）, wherein first
Communication channel（112a）It is associated with the first electric zero point, and the second communication channel（112b）It is related to the second electric zero point
Connection.
Preferably, Meter electronics（100）Also include determining the first vibrating sensor zero point and the second vibrating sensor
At least one in zero point, wherein the first vibrating sensor zero point includes one in the following：
；And
；And
Second vibrating sensor zero point includes one in the following：
；And
Wherein described item is：
It is and the first gauge assembly（10a）The first corresponding mechanical zero；
It is and the second gauge assembly（10b）The second corresponding mechanical zero；
It is and first communication channel（112a）The first corresponding electric zero point；
It is and the second communication channel（112b）The second corresponding electric zero point；
It is the first vibrating sensor zero point, wherein the first gauge assembly（10a）Via first communication channel（112a）It is logical
Letter is coupled to Meter electronics（100）；
It is the first vibrating sensor zero point, wherein the second gauge assembly（10b）Via first communication channel（112a）Communication
It is coupled to Meter electronics（100）；
It is the second vibrating sensor zero point, wherein the first gauge assembly（10a）Via the second communication channel（112b）Communication
It is coupled to Meter electronics（100）；And
It is the second vibrating sensor zero point, wherein the second gauge assembly（10b）Via the second communication channel（112b）Communication
It is coupled to Meter electronics（100）.
Preferably, at least one in the first mechanical zero and the second mechanical zero includes previously determined mechanical zero,
The previously determined mechanical zero is by measuring the first gauge assembly when in the absence of flow（10a）With the second gauge assembly
（10b）In the difference of one and obtain.
Preferably, processor（110）It is configured to identify the first gauge assembly（10a）With the second gauge assembly（10b）In
At least one include：From the first gauge assembly（10a）With the second gauge assembly（10b）In at least one identified
Value, and by the ident value obtained and it is stored in Meter electronics（100）In value be compared, wherein being stored in metering
Value in electronic device is previously from the first gauge assembly（10a）With the second gauge assembly（10b）In at least one obtain.
According to one side, a kind of double vibrating sensor systems for being used to determine mechanical zero（5）Including：First metering group
Part（10a）, the second gauge assembly（10b）And with first gauge assembly（10a）With the second gauge assembly（10b）Communicate coupling
The Meter electronics of conjunction（100）.The Meter electronics（100）It is configured to identify the first gauge assembly（10a）, Yi Jixuan
Select corresponding to the first identified gauge assembly（10a）The first mechanical zero.
Preferably, the Meter electronics（100）It is further configured to mark and is communicatively coupled to Meter electronics
（100）The second gauge assembly（10b）；And selection corresponds to the second gauge assembly（10b）The second mechanical zero.
Preferably, the first gauge assembly（10a）With the second gauge assembly（10b）In at least one via first communication believe
Road（112a）With the second communication channel（112b）In at least one be communicatively coupled to Meter electronics（100）, wherein first
Communication channel（112a）It is associated with the first electric zero point, and the second communication channel（112b）It is related to the second electric zero point
Connection.
Brief description of the drawings
Identical reference numeral represents the similar elements on all accompanying drawings.It should be understood that accompanying drawing is not necessarily to scale.
Fig. 1 shows to include double vibrating sensor systems of the Meter electronics 100 for two or more gauge assemblies
System 5.
Fig. 2 shows to include double vibrating sensor systems of the Meter electronics 100 for two or more gauge assemblies
System 5.
Fig. 3 shows the block diagram of Meter electronics 100.
Fig. 4 shows to regard with the another of Meter electronics 100 that first and second gauge assembly 10a, 10b are communicatively coupled
Figure.
Fig. 5 shows the Meter electronics 100 being communicatively coupled with first and second gauge assembly 10a, 10b.
Fig. 6 shows the method 600 for determining vibrating sensor zero point.
Fig. 7 shows the other method 700 for determining vibrating sensor zero point.
Embodiment
Fig. 1-7 and following description depict how teaching those skilled in the art obtain and using determination vibrating sensing
The specific example of the optimal mode of the embodiment of device zero point.In order to instruct the purpose of inventive principle, some conventional aspects by
Simplify or omit.It would be recognized by those skilled in the art that the change from these examples in the range of falling into this description.This area
Technical staff will appreciate that combination features described below determines vibrating sensor zero point to be formed in a variety of ways
Multiple changes.Therefore, the embodiments described below is not limited to specific examples described below, but only by claim and its
Equivalent is limited.
Determine vibrating sensor zero point can include mark be communicatively coupled to the first gauge assembly of Meter electronics with
And selection first mechanical zero corresponding with the first gauge assembly identified.Any appropriate method can be passed through（Such as
Be manually entered, identified automatically using ID resistor etc.）To identify the first gauge assembly.Vibrating sensor zero point can include
Mechanical zero and electric zero point.Mechanical zero can compensate machine error, such as leading in the gauge assembly under without flow
Difference between pipe.Electric zero point can compensate the electrical error associated with Meter electronics.
In double vibrating sensor systems, determine that vibrating sensor zero point can also be communicatively coupled to metering electricity including mark
Second gauge assembly of sub- device；And selection second mechanical zero corresponding with the second gauge assembly identified.Accordingly
Ground, what can be coupled to for example, by the mechanical zero to the first or second gauge assembly and the first or second gauge assembly is logical
The electric zero point of letter channel or Meter electronics sums to determine vibrating sensor zero for the first and/or second vibrating sensor
Point, as explained in more detail below.
Vibrating sensor system。
Fig. 1 shows to include being used to determine double vibrating sensor systems of the Meter electronics 100 of vibrating sensor zero point
5.As shown in fig. 1, double vibrating sensor systems 5 include the first vibrating sensor 5a and the second vibrating sensor 5b.First He
Second vibrating sensor 5a, 5b includes Meter electronics 100 and first and second gauge assembly 10a, 10b respectively.
Meter electronics 100 are communicatively coupled to the first and second meterings via first group and second group of wire 11a, 11b
Component 10a, 10b.This first group and second group of wire 11a, 11b are coupled（For example adhere to, paste etc.）To metering electronics device
First and second COM1 27a, 27b on part 100.This first group and second group of wire 11a, 11b are also via first and
First and second COM1 7a, 7b on two gauge assembly 10a, 10b are coupled to first and second gauge assembly 10a, 10b.
Meter electronics 100 are configured to passage path 26 and provide information to main frame.First and second gauge assembly 10a, 10b are shown
For with the housing for surrounding flowtube.Hereinafter with reference to Fig. 2 and 3 be more fully described Meter electronics 100 and first and
Second gauge assembly 10a, 10b.
Again referring to Fig. 1, first and second vibrating sensor 5a, 5b can be used to for example calculate supply line SL and the line of return
The difference of flow velocity rate and/or total flow between RL.More specifically, double vibrating sensor systems 5 can be used in cryogenic applications
In, wherein supplying the fluid in liquid from tank and tank is then returned in gaseous state.In an exemplary cryogenic applications
In, the first gauge assembly 10a can be by LNG be supplied to LNG distributors LD supply line SL a part and second metering
Component 10b can be a part of the line of return RL from LNG distributors LD.Can be from passing through the total of the first gauge assembly 10a
Flow subtracts by the second gauge assembly 10b total flow to determine to be fed to the LNG of LNG vehicles total amount.It is shown in broken lines
With supplying and putting back to line SL, RL this exemplary application to illustrate that double vibrating sensor systems 5 can be used in other application
In.Furthermore, it is possible to using other cryogens, such as hydrogen etc..As being also appreciated that, in described and other embodiments
In, the calculating can be performed by Meter electronics 100, this is hereinafter described in more detail.
Fig. 2 shows to include being used to determine double vibrating sensor systems of the Meter electronics 100 of vibrating sensor zero point
5.As shown in Figure 2, double vibrating sensor systems 5 are included above with reference to Fig. 1 the first vibrating sensor 5a described and the
Two vibrating sensor 5b.For the sake of clarity, be not shown the gauge assembly 10a of Meter electronics 100 and first and second,
Housing on 10b.First and second gauge assembly 10a, 10b are responded to the mass flow rate and density of rapidoprint.Meter
Amount electronic device 100 is connected to first and second gauge assembly 10a, 10b to lead to via first and second groups of wires 11a, 11b
Cross path 26 and density, mass flow rate and temperature information and other information are provided.Coriolis flow meter structure is described,
But the present invention may be implemented as vibrating conduit densitometer, tuning fork densitometer, viscosimeter etc. for a person skilled in the art
Etc. being obvious.
First and second gauge assembly 10a, 10b include parallel conduits to 13a, 13a ' and 13b, 13b ', first and second
Drive mechanism 18a, 18b, temperature sensor 190a, 190b, and left and right pickup sensor to 17al, 17ar and 17bl,
17br.Each during conduit is to 13a, 13a ' and 13b, 13b ' is along conduit 13a, 13a ' and 13b, 13b ' the two of length
Bent and substantially parallel over their entire lengths at individual symmetric position.Conduit 13a, 13a ' and 13b, 13b ' driven
Mechanism 18a, 18b drives in the opposite direction around their corresponding axis of bendings, and different in be referred to as flowmeter first
The pattern of phase beam mode.Drive mechanism 18a, 18b can include any one in many arrangements, such as be installed to conduit
13a ', 13b ' magnet and the opposed coil for being installed to conduit 13a, 13b, and alternating current by the opposed coil so as to
Make two conduits 13a, 13a ' and 13b, 13b ' vibration.Appropriate drive signal is applied to driving by Meter electronics 100
Mechanism 18a, 18b.
Can initially calibrate first and second vibrating sensor 5a, 5b, and can generate flow calibration factor FCF together with
Zero offset Δ T0.In use, flow calibration factor FCF can be multiplied by the time delay Δ T measured by pickup device and subtract zero
Shifted by delta T0To generate mass flow rate.Pass through equation（1）To describe to utilize flow calibration factor FCF and zero offset Δ T0
Mass flow rate equation example：
（1）
Wherein：=mass flow rate
FCF=flow calibration factor
ΔTmeasuredThe time delay of=measurement
ΔT0=initially zero offset.
Temperature sensor 19a, 19b are installed to conduit 13a ', 13b ' continuously to measure conduit 13a ', 13b ' temperature
Degree.Conduit 13a ', 13b ' temperature and the voltage therefore occurred for giving across temperature sensor 19a, 19b of electric current are led to
Cross conduit 13a ', the management of the temperature of 13b ' material.The temperature dependent voltage that across sensor 19a, 19b occur can be measured
Electronic device 100 is used for compensating caused by any change in conduit temperature conduit 13a ', 13b ' modulus of elasticity
Change.In an illustrated embodiment, temperature sensor 19a, 19b is resistance temperature detector（RTD）.Although reality described herein
Apply example and use RTD sensor, but other temperature sensors, such as thermistor, heat can be used in alternate embodiments
Galvanic couple etc..
Meter electronics 100 pick up sensor 17al, 17ar via first and second groups of wires 11a, 11b from left and right
Left and right sensor signal is received with 17bl, 17br and receives temperature signal from temperature sensor 19a, 19b.Measure electronics device
Part 100 provides drive signal to drive mechanism 18a, 18b and makes first and second couples of conduits 13a, 13a ' and 13b, 13b ' shake
It is dynamic.Meter electronics 100 handle left and right sensor signal and temperature signal to calculate by the first and/or second meter
Measure the mass flow rate and density of component 10a, 10b material.This information is together with the measured conduct of electronic device 100 of other information
Signal passage path 26 applies.
As can be appreciated, although the double vibrating sensor systems 5 shown in Fig. 1 and 2 only include two meterings
Component 10a, 10b, but double vibrating sensor systems 5 can be used in the system including more than two gauge assembly.For example,
Meter electronics may be configured to communicate with three or more gauge assemblies.In such an arrangement, double vibrating sensings
Device system 5 can be the part of two in Meter electronics and three or more gauge assemblies.
Meter electronics。
Fig. 3 shows the block diagram of Meter electronics 100.As shown in Figure 3, Meter electronics 100 are communicatively coupled to
One and second gauge assembly 10a, 10b.As hereinbefore described in reference diagram 1, first and second gauge assembly 10a, 10b include a left side
With right pickup sensor 17al, 17ar and 17bl, 17br, drive mechanism 18a, 18b and temperature sensor 19a, 19b, it is passed through
Pass through the first and second communication channels 112a, 112b and the first and second I/O ends by first and second groups of wires 11a, 11b
Mouth 160a, 160b are communicatively coupled to Meter electronics 100.As shown in Figure 3, first and second gauge assembly 10a, 10b are also
Including the first and second identity devices 15a, 15b being communicatively coupled with Meter electronics 100.
Meter electronics 100 provide first and second drive signal 14a, 14b via wire 11a, 11b.More specifically,
Meter electronics 100 the first drive mechanism 18a into the first gauge assembly 10a provide the first drive signal 14a.Metering electricity
The second drive mechanism 18b that sub- device 100 is further configured into the second gauge assembly 10b provides the second drive signal 14b.This
Outside, the first and second sensor signals 12a, 12b are provided by first and second gauge assembly 10a, 10b respectively.More specifically,
In an illustrated embodiment, first sensor signal 12a picks up sensor by first pair of left and right in the first gauge assembly 10a
17al, 17ar are provided.Second sensor signal 12b picks up sensor by second pair of left and right in the second gauge assembly 10b
17bl, 17br are provided.As it can be appreciated that, respectively by the first and second communication channels 112a, 112b to metering electronics device
Part 100 provides the first and second sensor signals 12a, 12b.
Meter electronics 100 include being communicatively coupled to one or more signal processors 120 and one or more storages
The processor 110 of device 130.Processor 110 is also communicatively coupled to user interface 30.Processor 110 passes through via COM1 140
Path 26 is coupled with main-machine communication, and receives electrical power via power port 150.Processor 110 can be microprocessor, so
And any appropriate processor can be used.It is such as polycaryon processor, serial for example, processor 110 can include sub-processor
COM1, peripheral interface（Such as SPI）, on-chip memory, I/O ports, etc..In these and other implementation
In example, processor 110 is configured to signal receive and treated（Such as by digitized signal）Perform behaviour
Make.
Processor 110 can be received from one or more signal processors 120 passes through digitized sensor signal.Processing
Device 110 is further configured to provide property of fluid in information, such as difference, first or second gauge assembly 10a, 10b etc..
Processor 110 can by COM1 140 to main frame provide information.Processor 110 can be configured to and one or many
Individual memory 130 communicates with receiving and/or storage information.For example, processor 110 can be from one or more memories 130
Receive calibration factor and/or gauge assembly zero point（Difference for example when there is zero delivery）.Calibration factor and/or gauge assembly
In zero point each can respectively with first and second vibrating sensor 5a, 5b and/or the first and second gauge assembly 10a,
10b is associated.Processor 110 can use calibration factor come to the process received from one or more signal processors 120
Digitized sensor signal is handled.
One or more signal processors 120 are shown as including the first and second encoder/decoders（Coding decoder）
122nd, 124 and AD converter（ADC）126.One or more signal processors 120 can adjust simulation letter
Number, analog signal of the digitlization through overregulating, and/or provide and pass through digitized signal.First and second coding decoders
122nd, 124 it is configured to receive left and right sensor signal from left and right pickup sensor 17al, 17ar and 17bl, 17br.The
One and second coding decoder 122,124 be further configured to drive mechanism 18a, 18b provide the first and second drive signals
14a、14b.In alternative embodiments, more or less signal processors can be used.For example, single encoded decoder can be with
It is used for the first and second sensor signals 12a, 12b and first and second drive signal 14a, 14b.
In an illustrated embodiment, one or more memories 130 include read-only storage（ROM）132nd, arbitrary access is deposited
Reservoir（RAM）134 and ferroelectric RAM（FRAM）136.However, in alternative embodiments, this is one or more
Memory 130 can include more or less memories.Additionally or alternatively, one or more memories 130 can be wrapped
Include different types of memory（Such as volatibility, non-volatile etc.）.For example, different types of nonvolatile memory（It is all
Such as such as Erasable Programmable Read Only Memory EPROM（EPROM）Etc.）FRAM 136 can be replaced to use.
Correspondingly, Meter electronics 100 may be configured to first and second gauge assembly 10a, 10b of mark and will
First and second sensor signals 12a, 12b are converted into data signal from analog signal.Meter electronics 100 can be using the
One and second identity device 15a, 15b identify first and second gauge assembly 10a, 10b.Meter electronics 100 can be with
Processing is configured to pass through digitized sensor signal to determine the fluid in first and second gauge assembly 10a, 10b
Property.For example, in one embodiment, Meter electronics 100 can determine first and second gauge assembly 10a, 10b respectively
In left and right pickup sensor 17al, 17ar and 17bl, 17br between the first and second differences.
As previously discussed in the, first and second difference can be use for the first and second vibrating sensor 5a,
5b vibrating sensor zero point and calculate.Because first and second vibrating sensor 5a, 5b include the first and second meters respectively
Component 10a, 10b and Meter electronics 100 are measured, so the first and second vibrating sensor zero points are respectively with first and second
Gauge assembly 10a, 10b are corresponding.First and second vibrating sensor zero points include the first and second mechanical zeroes and electricity respectively
Gas zero point.First and second mechanical zeroes can be corresponding with first and second gauge assembly 10a, 10b, and first and second
Electric zero point can be corresponding with the first and second communication channels 112a, 112b, will be explained in greater detail in following article.
Mechanically and electrically zero point。
Fig. 4 shows to regard with the another of Meter electronics 100 that first and second gauge assembly 10a, 10b are communicatively coupled
Figure.Meter electronics 100 are communicatively coupled via first communication channel 112a and the first gauge assembly 10a, and via second
Communication channel 112b and the second gauge assembly 10b is communicatively coupled.Also figure 4 illustrates be the first vibrating sensor zero point Rz11
With the second vibrating sensor zero point Rz22.As indicated, the first vibrating sensor zero point Rz11Including the first mechanical zero Rmz1With
One electric zero point Rez1.Second vibrating sensor zero point Rz22Including the second mechanical zero Rmz2With the second electric zero point Rez2.
In one embodiment, the first and second vibrating sensor zero point Rz11、Rz22Can be the first and second mechanical zero Rmz respectively1、
Rmz2And the first and second electric zero point Rez1、Rez2Sum, such as in following equation（1）With（2）In show：
；And（1）
（2）.
First and second mechanical zero Rmz1、Rmz2Correspond respectively to first and second gauge assembly 10a, 10b.For example, the
The one and second mechanical zero Rmz1、Rmz2Mechanical tolerance may be attributed to（Such as not parallel flow tube）, different quality and/or wall
Thick, etc..First and second mechanical zero Rmz1、Rmz2There can be identical or different value, they can be with the time（Δt）
Or difference（Δφ）For unit.The first and second mechanical zero Rmz can be determined during calibrating1、Rmz2。
For example, during calibrating, first and second gauge assembly 10a, 10b can have immobilising fluid.Metering electricity
Sub- device 100 can be vibrated the first gauge assembly 10a with such as resonant frequency and measure difference Δ φ.Because differing Δ φ
Determined when the first gauge assembly 10a vibrates, so difference Δ φ can be the first electric zero point Rez1With the first machinery
Zero point Rmz1Sum.In other words, the difference Δ φ determined when gauge assembly 10a vibrates is the first vibrating sensor zero point
Rz11.The second vibrating sensor zero point Rz can be determined in a similar way22。
First electric zero can be determined by measuring the difference Δ φ when the first gauge assembly 10a is not for example in vibration
Point Rez1.That is, difference Δ φ is attributed to electric drift in first communication channel 112a, change etc..For example, the first coding solution
The output of code device 122 can change with temperature.Therefore, close in the Meter electronics of the first coding decoder 122
Temperature sensor can be used to calculate the first electric zero point Rez1.The second electric zero point can be determined in a similar way
Rez2。
Can be by from the first vibrating sensor zero point Rz1Subtract the first electric zero point Rez1To determine the first mechanical zero
Rmz1, such as following equation（3）It is shown：
。
Following equation can be utilized（4）To determine the second mechanical zero Rmz in a similar manner2：
。
As can be appreciated, the first and second vibrating sensor zero point Rz1、Rz2Can be when the first He during calibrating
Second gauge assembly 10a, 10b is respectively coupled to what is determined during the first and second communication channels 112a, 112b.
First and second mechanical zero Rmz1、Rmz2, the first and second electric zero point Rez1、Rez2, and/or first and
Two vibrating sensor zero point Rz1、Rz2It is also stored in Meter electronics 100.For example, one described in above or
Multiple memories 130 can store the first and second mechanical zero Rmz1、Rmz2, the first and second electric zero point Rez1、Rez2、
And/or the first and second vibrating sensor zero point Rz1、Rz2。
In addition, Meter electronics 100 can be determined respectively from the first and second identity devices 15a, 15b with first and the
The first and second associated two gauge assembly 10a, 10b marks（ID）Value.For example, Meter electronics 100 can determine
The resistance of the first ID resistors in one gauge assembly 10a.The first and second gauge assemblies can be identified using other measures,
The electric parameter of such as temperature sensor, such as hereinbefore with reference to the temperature sensor 19a of the descriptions of Fig. 2 and 3,19b, first and the
The characteristic of two gauge assemblies（Such as resonant frequency）Etc..
In the embodiment with ID resistors, resistance can be stored in the memory 130 of Meter electronics 100
In, to cause resistance and the first mechanical zero Rmz1It is associated.For example, in one embodiment, one or more memories
130 can have the tables of data with row and column, wherein row and electric zero point Rezx, mechanical zero Rmzx, vibrating sensor zero point
RzxAnd ID values are corresponding.Correspondingly, single row can be for example including the first electric zero point Rez1, mechanical zero Rmz1, vibration
Sensor zero point Rz1And the first ID value.
However, after the calibration, first and second gauge assembly 10a, 10b can be decoupled from Meter electronics 100, with
Just for example it is packaged for transporting.After the position of such as client is transported to, first and second gauge assembly 10a, 10b can be with
Re-assemblied with Meter electronics 100.As can be appreciated, first and second gauge assembly 10a, 10b can not distinguish
It is coupled to the first and second communication channels 112a, 112b.For example, the second gauge assembly 10b can be via first communication channel
112a is communicatively coupled with Meter electronics 100, and the first gauge assembly 10a can be via the second communication channel 112b and meter
Electronic device is measured to be communicatively coupled.Such configuration is discussed below with reference to Fig. 5.
Fig. 5 shows the Meter electronics 100 being communicatively coupled with first and second gauge assembly 10a, 10b.It can such as see
Arrive, the first gauge assembly 10a is communicatively coupled via the second communication channel 112b with Meter electronics 100, and the second meter
Amount component 10b is communicatively coupled via first communication channel 112a with Meter electronics 100.Therefore, the first vibrating sensor zero
Point Rz12Including the first electric zero point Rez1With the second mechanical zero Rmz2.Second vibrating sensor zero point Rz21It is electric including second
Zero point Rez2With the first mechanical zero Rmz1。
First and second electric zero point Rez1、Rez2Can be with the electrical error in compensation measurement electronic device 100.For example, all
Such as adjusting analog signal can be for given defeated for the analog circuit of the operational amplifier of AD converter etc
Enter and export different values.Meter electronics 100 with reference to described in above, the first and second communication channels 112a, 112b
The first and second coding decoders 122,124, I/O ports 160a, 160b and wire 11a, 11b can be included respectively, it
Can promote the first and second sensor signals 12a, 12b for given voltage input and export different value.First and second
Electric zero point Rez1、Rez2The different value associated with the first and second communication channels 112a, 112b can be compensated.
First and second mechanical zero Rmz1、Rmz2The machine in first and second gauge assembly 10a, 10b can be compensated respectively
Tool error.For example, conduit 13a, 13a in first and second gauge assembly 10a, 10b, the dimension of ' and 13b, 13b ' can have
Wall thickness different slightly, this causes different initial zero shifted by delta T during zero flow condition0.First and second machineries zero
Point Rmz1、Rmz2Different initial zero shifted by delta T can be compensated0。
Therefore, the first vibrating sensor zero point Rz shown in Fig. 512With the first vibrating sensor zero point shown in Fig. 4
Rz11It is different.Therefore, the first vibrating sensor zero point Rz is utilized11The configuration that the mass flow rate of calculating is shown in using Fig. 5
In the case of may be inaccurate.However, it is possible to using the first vibrating sensor zero point Rz shown in Fig. 512To calculate exactly
Mass flow rate.
More specifically, can be according to following equation（5）To determine the first vibrating sensor zero point Rz12：
Similarly, can be according to following equation（6）To determine the second vibrating sensor zero point Rz21：
。
Can be by using following equation（7）Come determine to be coupled to the second communication channel 112b by the first metering group
Part 10a mass flow rate：
。
As can be appreciated,In subscript ' 2 ' indicate the second vibrating sensor 5b（It includes the second communication channel
112b and the first gauge assembly 10a）It is used to measurement stream speed.Similarly, can be by using following equation（8）To determine
It is coupled to the first communication channel 112a mass flow rate by the second gauge assembly 10b：
。
As can be appreciated,In subscript ' 1 ' indicate the first vibrating sensor 5a（It includes first communication channel
112a and the second gauge assembly 10b）It is used to measurement stream speed.
Illustrated as discussed previously, Meter electronics 100 can be identified for that such as the first gauge assembly 10a is communication
It is coupled to first communication channel 112a and is still communicatively coupled to the second communication channel 112b.Correspondingly, Meter electronics 100 can
To select the first mechanical zero Rmz corresponding to the first identified gauge assembly 10a1.Meter electronics 100 can be with similar
Ground selects the second mechanical zero Rmz2.By using the selected first or second mechanical zero Rmz1、Rmz2, Meter electronics
100 can determine the first and second vibrating sensor zero point Rz1、Rz2, such as the discussion below with reference to the method shown in Fig. 6 and 7
Illustrated.
Method。
Fig. 6 shows the method 600 for determining vibrating sensor zero point.In step 610, the mark of method 600 communication coupling
Close the first gauge assembly of Meter electronics.First gauge assembly can be the first gauge assembly 10a and measure electricity
Sub- device can be Meter electronics 100 hereinbefore with reference to described in Fig. 1-5.In step 620, the selection pair of this method 600
Should be in the first mechanical zero of the first gauge assembly identified.First mechanical zero can be determined previously during calibrating
And it is stored in Meter electronics.The other mark of optional step 630 and 640 is communicatively coupled to Meter electronics
（It can be the identical Meter electronics in step 610）The second gauge assembly and select can also adopted the
Two mechanical zeroes.
In step 610, various devices can be used to identify the first gauge assembly 10a.It is for instance possible to use mark
（ID）Resistor identifies gauge assembly.More specifically, for example, the resistance of the ID resistors in the first gauge assembly can be with
The resistance of the 2nd ID resistors in two gauge assemblies is different.With reference to hereinbefore with reference to Fig. 1-5 describe embodiment, if first
Gauge assembly 10a is communicatively coupled to first communication channel 112a, then Meter electronics 100 can measure the first gauge assembly
The resistance of ID resistors in 10a.Meter electronics 100 can be by the resistance with being stored in Meter electronics 100
Resistance value is compared.Resistance value in Meter electronics 100 can be with the first mechanical zero Rmz1It is corresponding, first machine
Tool zero point Rmz1It is corresponding with the first gauge assembly 10a.
In step 620, this method 600 can select first mechanical zero corresponding with the first gauge assembly.For example,
Embodiment with reference to described in above, the first mechanical zero can correspond to the first gauge assembly 10a the first mechanical zero
Rmz1.As described in above, the first mechanical zero Rmz1Previously determined during calibrating and be stored in metering
In one or more memories 130 of electronic device 100.Meter electronics 100 can also be determined and stored during calibrating
First ID values, to cause the first ID values and the first mechanical zero Rmz1It is corresponding.Correspondingly, Meter electronics 100 can be by
The first ID values stored are carried out with the first ID values obtained from the first gauge assembly 10a for being coupled to Meter electronics 100
Compare.First mechanical zero Rmz1It can be used to calculate the first or second vibrating sensor zero point Rz1、Rz2, will in following article
In greater detail.
As hereinbefore discussed with reference to Figure 4 and 5, the first gauge assembly 10a is may be coupled on Meter electronics 100
The first or second communication channel 112a, 112b.As explanation, if the first gauge assembly 10a is communicatively coupled to the second communication
Channel 112b（As shown in Figure 5）, then Meter electronics 100 can pass through the second communication channel 112b obtain the first ID values.
Correspondingly, Meter electronics 100 can determine that the first gauge assembly 10a is communicatively coupled to meter via the second communication channel 112b
Measure electronic device 100.As will be hereinafter described in more detail, Meter electronics 100 can be selected and using appropriate first
Or the second mechanical zero Rmz1、Rmz2To determine the first and second vibrating sensor zero point Rz1、Rz2。
Fig. 7 shows the addition method 700 for determining vibrating sensor zero point.As shown, method 700 by identify and in terms of
The step 710 of the first gauge assembly that amount electronic device is communicatively coupled starts, its can with hereinbefore step described in reference diagram 6
Rapid 610 same or analogous mode is performed.In step 720, this method 700 determines whether the first gauge assembly 10a passes through
Meter electronics are communicatively coupled to by first communication channel.For example, the embodiment with reference to described in hereinbefore referring to Fig. 1-5, meter
Amount electronic device 100 from the first gauge assembly 10a can obtain ID values via the first or second communication channel 112a, 112b.Can
Alternatively, ID values can be manually entered by user.ID values can be employed to the first gauge assembly 10a of mark and be coupled to first
With which in the second communication channel 112a, 112b.
If the first gauge assembly 10a is coupled to first communication channel 112a, this method 700 proceeds to step 730.Such as
Really the first gauge assembly 10a is not coupled to first communication channel 112a, then this method 700 proceeds to step 740.In step
In 730 and 740, the first mechanical zero（The the first mechanical zero Rmz such as hereinbefore discussed1）It is used to calculate the first vibration biography
Sensor zero point Rz1.In step 750, the first vibrating sensor zero point Rz is used1To calculate mass flow rate.
In step 710 and 720, this method 700 can use various devices to identify and determine that the first gauge assembly is
It is no to be communicatively coupled to Meter electronics via first communication channel.For example, processor（Such as above described in processor
110）The resistance of the ID resistors in the first or second gauge assembly can be measured via first communication channel.Can will be measured
Resistance be compared with the resistance that is stored in the memory in Meter electronics, to determine the first or second gauge assembly
Whether first communication channel is coupled to.
If the first gauge assembly is coupled to Meter electronics via first communication channel, method 700 can be used
Following equation calculates the first and second vibrating sensor zero point Rz in step 7301、Rz2：
；And（9）
。
As can be appreciated, because the first gauge assembly is communicatively coupled to metering electronics device via first communication channel
Part, so the first vibrating sensor zero point Rz1With the first vibrating sensor zero point Rz11Identical, this includes indicating the first machinery zero
Point Rmz1It is used to calculate the first vibrating sensor zero point Rz1Secondary annotation（secondary notation）.Similarly,
Two vibrating sensor zero point Rz2With vibrating sensor zero point Rz22Identical, this includes indicating the second mechanical zero Rmz2It is used for meter
Calculate the second vibrating sensor zero point Rz2Secondary annotation.
If the first gauge assembly is communicatively coupled in Meter electronics, step 740 via the second communication channel
Method can use following equation（11）With（12）To calculate the first and second vibrating sensor zero point Rz1、Rz2：
；And（11）
。
As can be appreciated, because the first gauge assembly is communicatively coupled to metering electronics device via first communication channel
Part, so the first vibrating sensor zero point Rz1With the first vibrating sensor zero point Rz12Identical, this includes indicating the second machinery zero
Point Rmz2It is used to calculate the first vibrating sensor zero point Rz1Secondary annotation.Similarly, the second vibrating sensor zero point Rz2With
Second vibrating sensor zero point Rz22Identical, this includes indicating the first mechanical zero Rmz1It is used to calculate the second vibrating sensor
Zero point Rz2Secondary annotation.
Correspondingly, can be that the fluid for flowing through the first and second gauge assemblies calculates mass flow rate exactly, i.e.,
The first and second gauge assemblies are made to be coupled to Meter electronics via the first or second communication channel.It is, for example, possible to use under
The equation in face（13）With（14）To calculate the corresponding mass flow rate for the fluid for flowing through the first and second gauge assemblies：
。
Above-described embodiment determines vibrating sensor zero point.As hereinbefore explained, Meter electronics 100 and method
600th, 700 can use identity device 15a, 15b identify be communicatively coupled to Meter electronics 100 first or second metering
Component 10a, 10b.By using identity device 15a, 15b, Meter electronics 100 select and use the first and second machineries zero
Point Rmz1、Rmz2In appropriate one determine the first and second vibrating sensor zero point Rz1、Rz2.Therefore, first and second
Vibrating sensor zero point Rz1、Rz2Can be accurate, even if first and second gauge assembly 10a, 10b are coupled to first and
Any one in two communication channels 112a, 112b.
For example, in cryogenic applications（Such as LNG fuel systems）In, Meter electronics 100 can be arranged to place
Both the first gauge assembly 10a in LNG supply lines SL and the second gauge assembly 10b in LNG lines of return RL.First
Gauge assembly 10a can be 1 inch of vibrating sensor type, and the second gauge assembly 10b can be 1/4 inch of vibrating sensor
Type.Therefore Meter electronics 100 can identify first and second gauge assembly 10a, 10b and corresponding first and second
Mechanical zero Rmz1、Rmz2, to accurately measure flow velocity rates of the LNG in both supply line SL and line of return RL.
The detailed description of above-described embodiment is not all embodiments within the scope of this description desired by inventor
Detailed description.In fact, it would be recognized by those skilled in the art that some elements of above-described embodiment can be combined differently
Or eliminate to create further embodiment, and such further embodiment is fallen within scope and the teaching of this description.It is right
It will also be evident that for those of ordinary skill in the art, above-described embodiment can in whole or in part be combined and originally retouched with creating
Further embodiment within the scope stated and teaching.
Therefore, it is each within the scope of this description although specific embodiment is described herein for illustrative purposes
It is possible to plant equivalent modifications, as the technical staff in association area will be recognized that.Teaching provided herein can be by
The other Meter electronics and method for determining vibrating sensor zero point are applied to, and not only arrives and is described above and accompanying drawing
In the embodiment that shows.Therefore, the scope of embodiment described above should be determined by following claim.
Claims (15)
1. a kind of method for determining vibrating sensor zero point, this method includes：
Mark is communicatively coupled to the first gauge assembly of Meter electronics；And
First mechanical zero of the selection corresponding to the first identified gauge assembly.
2. according to the method described in claim 1, in addition to：
Mark is communicatively coupled to the second gauge assembly of Meter electronics；And
Second mechanical zero of the selection corresponding to the second identified gauge assembly.
3. the method described in one in claim 1 or claim 2, wherein first gauge assembly and the second meter
At least one in amount component is communicatively coupled to metering electricity via at least one in first communication channel and the second communication channel
Sub- device, wherein first communication channel are associated with the first electric zero point, and the second communication channel and the second electric zero point phase
Association.
4. method according to claim 3, in addition to determine the first vibrating sensor zero point and the second vibrating sensor zero
Point at least one, wherein：
First vibrating sensor zero point includes one in the following：
；And
；And
Second vibrating sensor zero point includes one in the following：
；And
；
Wherein described item is：
It is first mechanical zero corresponding with the first gauge assembly；
It is second mechanical zero corresponding with the second gauge assembly；
It is the electric zero point of first corresponding with first communication channel；
It is the electric zero point of second corresponding with the second communication channel；
It is the first vibrating sensor zero point, wherein the first gauge assembly is communicatively coupled to metering electricity via first communication channel
Sub- device；
It is the first vibrating sensor zero point, wherein the second gauge assembly is communicatively coupled to metering electricity via first communication channel
Sub- device；
It is the second vibrating sensor zero point, wherein the first gauge assembly is communicatively coupled to metering electricity via the second communication channel
Sub- device；And
It is the second vibrating sensor zero point, wherein the second gauge assembly is communicatively coupled to metering electricity via the second communication channel
Sub- device.
5. the method described in one in any claim in preceding claims 1 to 4, wherein first machinery
At least one in zero point and the second mechanical zero includes previously determined mechanical zero, and the previously determined mechanical zero is logical
Cross the difference of one measured when in the absence of flow in the first gauge assembly and the second gauge assembly and obtain.
6. the method described in one in any claim in preceding claims 1 to 5, wherein mark first is measured
At least one in component and the second gauge assembly includes：
Parameter is obtained from least one in the first gauge assembly and the second gauge assembly；And
The parameter obtained and the value that is stored in Meter electronics are compared；
The value being wherein stored in Meter electronics is previously from least one in the first gauge assembly and the second gauge assembly
Individual acquisition.
7. a kind of Meter electronics for being used to determine vibrating sensor zero point（100）, the system（100）Including：
With the first gauge assembly（10a）The processor of communicative couplings（110）,
The processor（110）It is configured to：
Identify the first gauge assembly（10a）；And
Selection corresponds to the first identified gauge assembly（10a）The first mechanical zero.
8. Meter electronics according to claim 7（100）, wherein the processor（110）It is further configured to：
Mark is communicatively coupled to Meter electronics（100）The second gauge assembly（10b）；And
Selection corresponds to the second gauge assembly（10b）The second mechanical zero.
9. the Meter electronics described in one in claim 7 or claim 8（100）, wherein first meter
Measure component（10a）With the second gauge assembly（10b）In at least one via first communication channel（112a）With the second communication letter
Road（112b）In at least one be communicatively coupled to Meter electronics（100）, wherein first communication channel（112a）With first
Electric zero point is associated, and the second communication channel（112b）It is associated with the second electric zero point.
10. Meter electronics according to claim 9（100）, in addition to determine the first vibrating sensor zero point and the
At least one in two vibrating sensor zero points, wherein：
First vibrating sensor zero point includes one in the following：
；And
；And
Second vibrating sensor zero point includes one in the following：
；And
；
Wherein described item is：
It is and the first gauge assembly（10a）The first corresponding mechanical zero；
It is and the second gauge assembly（10b）The second corresponding mechanical zero；
It is and first communication channel（112a）The first corresponding electric zero point；
It is and the second communication channel（112b）The second corresponding electric zero point；
It is the first vibrating sensor zero point, wherein the first gauge assembly（10a）Via first communication channel（112a）Communication
It is coupled to Meter electronics（100）；
It is the first vibrating sensor zero point, wherein the second gauge assembly（10b）Via first communication channel（112a）Communication
It is coupled to Meter electronics（100）；
It is the second vibrating sensor zero point, wherein the first gauge assembly（10a）Via the second communication channel（112b）Communication
It is coupled to Meter electronics（100）；And
It is the second vibrating sensor zero point, wherein the second gauge assembly（10b）Via the second communication channel（112b）Communication
It is coupled to Meter electronics（100）.
11. the Meter electronics described in one in any claim in preceding claims 7 to 10（100）,
At least one in wherein described first mechanical zero and the second mechanical zero includes previously determined mechanical zero, described previous
The mechanical zero of determination is by measuring the first gauge assembly when in the absence of flow（10a）With the second gauge assembly（10b）In
The difference of one and obtain.
12. the Meter electronics described in one in any claim in preceding claims 7 to 11（100）,
Wherein processor（110）It is configured to identify the first gauge assembly（10a）With the second gauge assembly（10b）In at least one bag
Include：
From the first gauge assembly（10a）With the second gauge assembly（10b）In at least one obtain ident value；And
By the ident value obtained with being stored in Meter electronics（100）In value be compared；
The value being wherein stored in Meter electronics is previously from the first gauge assembly（10a）With the second gauge assembly（10b）
In at least one obtain.
13. a kind of double vibrating sensor systems for being used to determine mechanical zero（5）, this pair of vibrating sensor system（5）Including：
First gauge assembly（10a）；
Second gauge assembly（10b）；And
With first gauge assembly（10a）With the second gauge assembly（10b）The Meter electronics of communicative couplings（100）, should
Meter electronics（100）It is configured to：
Identify the first gauge assembly（10a）；And
Selection corresponds to the first identified gauge assembly（10a）The first mechanical zero.
14. according to claim 13 pair of vibrating sensor system（5）, the wherein Meter electronics（100）Entered one
Step is configured to：
Mark is communicatively coupled to Meter electronics（100）The second gauge assembly（10b）；And
Selection corresponds to the second gauge assembly（10b）The second mechanical zero.
15. double vibrating sensor systems described in one in claim 13 and claim 14（5）, wherein the first meter
Measure component（10a）With the second gauge assembly（10b）In at least one via first communication channel（112a）With the second communication letter
Road（112b）In at least one be communicatively coupled to Meter electronics（100）, wherein first communication channel（112a）With first
Electric zero point is associated, and the second communication channel（112b）It is associated with the second electric zero point.
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