CN107884115B - Method and device for measuring air buoyancy change - Google Patents
Method and device for measuring air buoyancy change Download PDFInfo
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- CN107884115B CN107884115B CN201610875675.XA CN201610875675A CN107884115B CN 107884115 B CN107884115 B CN 107884115B CN 201610875675 A CN201610875675 A CN 201610875675A CN 107884115 B CN107884115 B CN 107884115B
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000008859 change Effects 0.000 title abstract description 18
- 230000005484 gravity Effects 0.000 claims abstract description 232
- 238000005303 weighing Methods 0.000 claims abstract description 190
- 230000001133 acceleration Effects 0.000 claims description 53
- 238000000691 measurement method Methods 0.000 claims description 17
- 238000005259 measurement Methods 0.000 abstract description 27
- 230000000007 visual effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000008569 process Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 4
- 229920001817 Agar Polymers 0.000 description 3
- 239000008272 agar Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- General Physics & Mathematics (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The invention discloses a method and a device for measuring air buoyancy change, and belongs to the technical field of measurement. The method comprises the following steps: acquiring a first temperature of the weighing tank in a first state and a first mass difference value of the weighing tank relative to a reference object, acquiring a second mass difference value of the substitute relative to the reference object, and acquiring a first gravity difference value of the weighing tank relative to the substitute according to the first mass difference value and the second mass difference value; acquiring a second temperature of the weighing tank in a second state and a third mass difference value of the weighing tank relative to the reference object, acquiring a fourth mass difference value of the substitute relative to the reference object, and acquiring a second gravity difference value of the weighing tank relative to the substitute according to the third mass difference value and the fourth mass difference value; acquiring a change value of the air buoyancy of the weighing tank from the first temperature to the second temperature according to the first gravity difference value and the second gravity difference value; the reference object and the substitute are stable objects. The change value of the air buoyancy of the weighing tank at different temperatures is measured through the substitute with stable quality, and the result is more real, visual and reliable.
Description
Technical field
The present invention relates to field of measuring technique, in particular to a kind of the measurement method and device of aerostatic buoyancy variation.
Background technique
In field of measuring technique, gaseous mass is often weighed using weighing pot.In practical applications, gas weighing pot
The variation of pot temperature can be brought during being inflated and deflating, and temperature change will cause the change for weighing tank volume
Change, to bring the change of its aerostatic buoyancy.Symmetrical measuring tank and its in gas carry out mass measurement when, aerostatic buoyancy can be straight
Connect influence measurement result.Therefore, it when measuring weighing pot and gaseous mass therein, needs to since weighing pot temperature changes band
The aerostatic buoyancy change come measures amendment.
In the related art, the measurement of aerostatic buoyancy variation is realized based on cubing.It is big by measuring
Atmospheric pressure and temperature conversion obtain atmospheric density, converse its sky according to the atmospheric density of measurement measured object volume and place space
Lift of gas variation.Wherein, existing volume measuring method includes drainage, the agar diffusion method that overflows, buries micromicrofarad and calculating method.Drainage for
The measured object that discord water reacts, is ready for the measuring flume of enough large volumes, first water will be poured into measuring flume, later by measured object
It is totally submerged in water, obtains being put into bring volume change due to measured object so that it is determined that measured object by measuring SEA LEVEL VARIATION
Volume.Similar with drainage, excessive agar diffusion method is also required to measuring flume, but measuring flume need to fill water, and measured object is completely submerged in water
In after, the volume of the water overflowed by measurement determines measured object volume.The water in drainage can be changed into fine sand by burying micromicrofarad, be adopted
The mode similar with draining side is taken to carry out cubing, since sand is thermally conductive slow with respect to water, while the model of sand bearing temperature
Enclosing will not extensively evaporate, and can solve the part drawback of drainage.Computing rule is according to the density, shape and survey of known measured object
The measured object temperature of amount calculates measured object volume.
In the implementation of the present invention, inventor has found that the prior art at least has following difference:
Measurement sump volume needed for drainage and excessive agar diffusion method need to be greater than measured object, thus cost is larger, and operability compared with
It is low；Again since measured object will be totally submerged in water, if there are temperature differences for water and measured object, measured object temperature can be changed quickly
Degree, directly affects measurement result；In addition, due to the freezing point and boiling spread of water, it is determined that the temperature range of measured object need to be in
Between 0-100 DEG C, going beyond the scope, which will be unable to, is measured, and water rapid evaporation can be made to bring error if temperature is excessively high, so practical
Temperature range can be smaller in operation.It is identical as drainage to bury micromicrofarad, at high cost and poor operability；Although sand heat-transfer rate ratio
Water is slow, but still there are problems that changing measured object temperature, influences measurement result.Computing rule is for irregularly shaped object, measurement
It is accurate not can guarantee, and there are large errors for calculating；And temperature distribution is non-uniform is unable to get measured object true temperature, influences to calculate
As a result；In addition, measured object material multiplicity, measurement difficulty are larger.
Summary of the invention
In order to solve the problems, such as the relevant technologies, the embodiment of the invention provides a kind of aerostatic buoyancy variation measurement method and
Device.The technical solution is as follows:
In a first aspect, providing a kind of measurement method of aerostatic buoyancy variation, which comprises
The first temperature of weighing pot in the first state and the first quality difference value with respect to object of reference are obtained, the title is obtained
Second quality difference value of the relatively described object of reference of the substitute of measuring tank, it is of poor quality according to first quality difference value and described second
Value obtains the first gravity difference of the relatively described substitute of weighing pot；
The third quality difference value for obtaining weighing pot second temperature in the second condition and the relatively described object of reference, is obtained
The 4th quality difference value for taking the relatively described object of reference of the substitute, it is of poor quality according to the third quality difference value and the described 4th
Value obtains the second gravity difference of the relatively described substitute of weighing pot；
According to the first gravity difference and the second gravity difference obtain the weighing pot by first temperature to
The changing value of the aerostatic buoyancy of the second temperature；
Wherein, the object of reference and the substitute are the stable object of quality.
Optionally, described according to first quality difference value institute opposite with second quality difference value acquisition weighing pot
State the first gravity difference of substitute, comprising:
It obtains the first mass fiducial value between first quality difference value and second quality difference value, obtains described the
Product between one mass fiducial value and acceleration of gravity, using obtained result as the relatively described substitute of the weighing pot
First gravity difference；
It is described that the opposite substitution of the weighing pot is obtained according to the third quality difference value and the 4th quality difference value
Second gravity difference of object, comprising:
It obtains the second mass fiducial value between the third quality difference value and the 4th quality difference value, obtains described the
Product between two mass fiducial values and acceleration of gravity, using obtained result as the relatively described substitute of the weighing pot
Second gravity difference.
Optionally, described according to first quality difference value institute opposite with second quality difference value acquisition weighing pot
State the first gravity difference of substitute, comprising:
The product between first quality difference value and acceleration of gravity is obtained, the first gravity reference value is obtained；Obtain institute
The product between the second quality difference value and the acceleration of gravity is stated, the second gravity reference value is obtained；Obtain first gravity
Difference between reference value and the second gravity reference value, using obtained result as the relatively described substitute of the weighing pot
The first gravity difference；
It is described that the opposite substitution of the weighing pot is obtained according to the third quality difference value and the 4th quality difference value
Second gravity difference of object, comprising:
The product between the third quality difference value and acceleration of gravity is obtained, third gravity reference value is obtained；Obtain institute
The product between the 4th quality difference value and the acceleration of gravity is stated, the 4th gravity reference value is obtained；Obtain the third gravity
Difference between reference value and the 4th gravity reference value, using obtained result as the relatively described substitute of the weighing pot
The second gravity difference.
Optionally, described that the weighing pot is obtained by described according to the first gravity difference and the second gravity difference
First temperature to the second temperature aerostatic buoyancy changing value, comprising:
The difference between the first gravity difference and the second gravity difference is obtained, using obtained result as described in
The changing value of aerostatic buoyancy of the weighing pot by first temperature to the second temperature.
Optionally, the first state is the weighing pot by sky to the state after high speed gassy；Second shape
State is the weighing pot gassy and stands the state after the first preset time period.
Optionally, the first state is the weighing pot by the state after gassy to high speed emptying gas；It is described
Second state is the weighing pot emptying gas and stands the state after the second preset time period.
On the other hand, a kind of measuring device of aerostatic buoyancy variation is provided, described device includes:
First obtains module, for obtaining the first matter of weighing pot the first temperature in the first state and opposite object of reference
Difference is measured, the second quality difference value of the relatively described object of reference of substitute of the weighing pot is obtained；
Second obtains module, for obtaining the weighing pot according to first quality difference value and second quality difference value
First gravity difference of the relatively described substitute；
Third obtains module, for obtaining weighing pot second temperature in the second condition and the relatively described object of reference
Third quality difference value, obtain the 4th quality difference value of the relatively described object of reference of the substitute；
4th obtains module, for obtaining the weighing pot according to the third quality difference value and the 4th quality difference value
Second gravity difference of the relatively described substitute；
5th obtains module, for obtaining the weighing pot according to the first gravity difference and the second gravity difference
The changing value of aerostatic buoyancy by first temperature to the second temperature；
Wherein, the object of reference and the substitute are the stable object of quality.
Optionally, described second obtain module, for obtain first quality difference value and second quality difference value it
Between the first mass fiducial value, obtain the product between the first mass fiducial value and acceleration of gravity, the result that will be obtained
The first gravity difference as the relatively described substitute of the weighing pot；
Described 4th obtains module, for obtaining second between the third quality difference value and the 4th quality difference value
Quality fiducial value obtains the product between the second mass fiducial value and acceleration of gravity, using obtained result as described in
Second gravity difference of the relatively described substitute of weighing pot.
Optionally, described second module is obtained, for obtaining multiplying between first quality difference value and acceleration of gravity
Product, obtains the first gravity reference value；The product between second quality difference value and the acceleration of gravity is obtained, obtains second
Gravity reference value；Obtain the difference between the first gravity reference value and the second gravity reference value, the result that will be obtained
The first gravity difference as the relatively described substitute of the weighing pot；
The 4th acquisition module is obtained for obtaining the product between the third quality difference value and acceleration of gravity
Third gravity reference value；The product between the 4th quality difference value and the acceleration of gravity is obtained, the 4th gravity ginseng is obtained
Examine value；The difference between the third gravity reference value and the 4th gravity reference value is obtained, using obtained result as institute
State the second gravity difference of the relatively described substitute of weighing pot.
Optionally, the described 5th obtain module, for obtain the first gravity difference and the second gravity difference it
Between difference, the change of the aerostatic buoyancy using obtained result as the weighing pot by first temperature to the second temperature
Change value.
Technical solution provided in an embodiment of the present invention has the benefit that
Due to the stable substitute of quality have save quality measurements ability, simultaneously because in measurement process with alternating temperature
Weighing pot be detached from, not will receive the influence of weighing pot temperature change, it is possible to accurately save its mass value.Pass through utilization
The mass value of the symmetrical measuring tank of the stable substitute of quality at different temperatures is compared method measurement and record, contains weighing pot
The variation for the aerostatic buoyancy that all correlative factors such as the deformation brought due to temperature change are generated, relative to introducing in the related technology
Method it is all more fully accurate, obtained result is more true, intuitive and reliable.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of flow chart of the measurement method of aerostatic buoyancy variation provided in an embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides a kind of aerostatic buoyancy variation measurement method flow chart；
Fig. 3 be another embodiment of the present invention provides a kind of aerostatic buoyancy variation measurement method flow chart；
Fig. 4 be another embodiment of the present invention provides a kind of aerostatic buoyancy variation measuring device structural schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to FIG. 1, it illustrates the processes of the measurement method of aerostatic buoyancy provided by one embodiment of the present invention variation
Figure.As shown in Figure 1, the measurement method of the aerostatic buoyancy may comprise steps of:
101: obtaining the first temperature of weighing pot in the first state and the first quality difference value with respect to object of reference, obtain and claim
The substitute of measuring tank obtains weighing pot according to the first quality difference value and the second quality difference value with respect to the second quality difference value of object of reference
First gravity difference of opposite substitute；
Wherein, object of reference and substitute are the stable object of quality.
As a kind of alternative embodiment, according to the first quality difference value substitute opposite with the second quality difference value acquisition weighing pot
The first gravity difference, comprising:
The first mass fiducial value between the first quality difference value and the second quality difference value is obtained, the first mass fiducial value is obtained
Product between acceleration of gravity, the first gravity difference using obtained result as weighing pot with respect to substitute.
As a kind of alternative embodiment, according to the first quality difference value substitute opposite with the second quality difference value acquisition weighing pot
The first gravity difference, comprising:
The product between the first quality difference value and acceleration of gravity is obtained, the first gravity reference value is obtained；Obtain the second matter
The product between difference and acceleration of gravity is measured, the second gravity reference value is obtained；Obtain the first gravity reference value and the second gravity
Difference between reference value, the first gravity difference using obtained result as weighing pot with respect to substitute.
102: obtaining the second temperature of weighing pot in the second condition and the third quality difference value with respect to object of reference, acquisition is replaced
The 4th quality difference value for object with respect to object of reference, according to third quality difference value substitution opposite with the 4th quality difference value acquisition weighing pot
Second gravity difference of object；
As a kind of alternative embodiment, according to third quality difference value substitute opposite with the 4th quality difference value acquisition weighing pot
The second gravity difference, comprising:
The second mass fiducial value between third quality difference value and the 4th quality difference value is obtained, the second mass fiducial value is obtained
Product between acceleration of gravity, the second gravity difference using obtained result as weighing pot with respect to substitute.
As a kind of alternative embodiment, according to third quality difference value substitute opposite with the 4th quality difference value acquisition weighing pot
The second gravity difference, comprising:
The product between third quality difference value and acceleration of gravity is obtained, third gravity reference value is obtained；Obtain the 4th matter
The product between difference and acceleration of gravity is measured, the 4th gravity reference value is obtained；Obtain third gravity reference value and the 4th gravity
Difference between reference value, the second gravity difference using obtained result as weighing pot with respect to substitute.
103: weighing pot is obtained by the sky of the first temperature to second temperature according to the first gravity difference and the second gravity difference
The changing value of lift of gas.
As a kind of alternative embodiment, weighing pot is obtained by the first temperature according to the first gravity difference and the second gravity difference
To the changing value of the aerostatic buoyancy of second temperature, comprising:
The difference between the first gravity difference and the second gravity difference is obtained, using obtained result as weighing pot by first
Temperature to second temperature aerostatic buoyancy changing value.
As a kind of alternative embodiment, above-mentioned first state is weighing pot by sky to the state after high speed gassy；The
Two-state is weighing pot gassy and stands the state after the first preset time period.
As a kind of alternative embodiment, above-mentioned first state is weighing pot by the shape after gassy to high speed emptying gas
State；Second state is weighing pot emptying gas and stands the state after the second preset time period.
In addition, in order to reduce the influence of external environment weighing tank temperature degree, so that the error of buoyancy measurement result is reduced, this
The method that embodiment and subsequent embodiment provide preferably is realized in the more stable scene of ambient temperature, so that weighing pot
In first state and the second state, ambient temperature is with respect to stable and consistent, to reduce ambient temperature weighing tank temperature
The influence of degree.
In conclusion the measurement method of aerostatic buoyancy variation provided in this embodiment, due to the substitute tool that quality is stable
There is the ability for saving quality measurements, simultaneously because being detached from measurement process with the weighing pot of alternating temperature, not will receive weighing pot temperature
Spend the influence of variation, it is possible to accurately save its mass value.By the stable symmetrical measuring tank of substitute of utilization quality not
Mass value under synthermal is compared method measurement and record, and it is all to contain deformation that weighing pot is brought due to temperature change etc.
The variation for the aerostatic buoyancy that correlative factor generates, it is all more fully accurate relative to the method introduced in the related technology, it is acquired
Result it is more true, intuitive and reliable.
One embodiment of the invention provides a kind of measurement method of aerostatic buoyancy variation, relative to real shown in above-mentioned Fig. 1
Example is applied, is counterweight with the stable substitute of quality and object of reference for ease of description, substitute is A counterweight, object of reference B
Counterweight, and for measuring in conjunction with balance system, method provided in this embodiment is described in detail.Wherein, balance system
System includes left disk and right disk, and when having object on left disk and right disk, balance can show that a reading, the reading are left disk and the right side
The quality difference value between object on disk.When method provided in this embodiment is embodied, using the B counterweight placement as object of reference
In the right disk of balance, weighing pot or substitute are illustrated for being individually positioned in the left disk of balance.Referring to FIG. 2, the air
The measurement method of buoyancy variation may comprise steps of:
201: obtaining the first temperature of weighing pot in the first state and the first quality difference value with respect to object of reference, obtain and claim
Second quality difference value of the substitute of measuring tank with respect to object of reference；
The specific implementation of the step includes but is not limited to the following two kinds situation:
The first situation: first state is weighing pot by sky to the state after high speed gassy:
The first temperature of weighing pot in the first state and the first quality difference value with respect to object of reference are obtained, weighing pot is obtained
Substitute with respect to the second quality difference value of object of reference, including but not limited to empty weighing pot is inflated with pipeline joint.
When gas high speed is filled with, weighing pot temperature is increased, record weighing pot temperature T1 at this time, then by weighing pot open into balance system into
Row weighs.At this point, the left disk of balance system is placed with weighing pot, right disk is placed with B counterweight, and recording balance reads P1.Later again
Weighing pot is outputed, A counterweight is opened into balance system, at this point, the left disk of balance system is placed with A counterweight, right disk is placed with B weight
Code, recording balance read P2.
In the first of first state, T1 is the first temperature of weighing pot in the first state, and P1 is to claim
For measuring tank in the first state with respect to the first quality difference value of object of reference, P2 is second of substitute with respect to object of reference of weighing pot
Quality difference value.
Second situation: first state is weighing pot by the state after gassy to high speed emptying gas:
Wherein, the first temperature of weighing pot in the first state and the first quality difference value with respect to object of reference are obtained, is obtained
The substitute of weighing pot includes but is not limited to the weighing pot and pipeline pair that will be filled with gas with respect to the second quality difference value of object of reference
Tap into capable deflation.When gas high speed is released, weighing pot temperature is reduced, and records weighing pot temperature T1 ' at this time, then weighing pot is opened
Enter balance system to be weighed.At this point, the left disk of balance system is placed with weighing pot, right disk is placed with B counterweight, and recording balance is read
Number P1 '.Weighing pot to be outputed again later, A counterweight is opened into balance system, at this point, the left disk of balance system is placed with A counterweight, it is right
Disk is placed with B counterweight, and recording balance reads P2 '.
In the first of first state, T1 ' is the first temperature of weighing pot in the first state, and P1 ' is
For weighing pot in the first state with respect to the first quality difference value of object of reference, P2 ' is the substitute of weighing pot with respect to object of reference
Second quality difference value.
202: obtaining the first mass fiducial value between the first quality difference value and the second quality difference value, obtain the first mass ratio
The first gravity difference compared with the product between value and acceleration of gravity, using obtained result as weighing pot with respect to substitute；
Wherein, when obtaining the first mass fiducial value between the first quality difference value and the second quality difference value, including but it is unlimited
Subtract each other in by the first quality difference value and the second quality difference value, obtained result is the first mass fiducial value.
For example, being directed to the first situation of above-mentioned first state, obtain between the first quality difference value and the second quality difference value
The first mass fiducial value be P1-P2, obtaining the product between the first mass fiducial value and acceleration of gravity is (P1-
P2) * g, wherein g is acceleration of gravity, then weighing pot is (P1- with respect to the first gravity difference of substitute in the first temperature T1
P2)*g。
For example, being directed to the second situation of above-mentioned first state, obtain between the first quality difference value and the second quality difference value
The first mass fiducial value be P1 '-P2 ', obtaining the product between the first mass fiducial value and acceleration of gravity is (P1 '-
P2 ') * g, then weighing pot is (P1 '-P2 ') * g with respect to the first gravity difference of substitute in the first temperature T1.
It should be noted that above-mentioned steps 201 and step 202 correspond to step 101 shown in FIG. 1.
203: obtaining the second temperature of weighing pot in the second condition and the third quality difference value with respect to object of reference, acquisition is replaced
The 4th quality difference value for object with respect to object of reference；
For two kinds of situations of first state in above-mentioned steps 201, which also includes but is not limited to the following two kinds
Situation:
The first situation: for the first situation of first state in above-mentioned steps 201, the second state is full of for weighing pot
State after gas and the first preset time period of standing；
The second temperature of weighing pot in the second condition and the third quality difference value with respect to object of reference are obtained, substitute is obtained
4th quality difference value of opposite object of reference, including but not limited to stands the first preset time period for high temperature weighing pot, until temperature
It reduces, records weighing pot temperature T2 at this time, weighing pot is opened weighed into balance system again.At this point, a left side for balance system
Disk is placed with weighing pot, and right disk is placed with B counterweight, and recording balance reads P3.Weighing pot is outputed again later, A counterweight is opened into day
Flat system, at this point, the left disk of balance system is placed with A counterweight, right disk is placed with B counterweight, and recording balance reads P4.
In the first of the second state, T2 is the second temperature of weighing pot in the second condition, and P3 is to claim
For measuring tank in the second condition with respect to the third quality difference value of object of reference, it is the 4th of poor quality with respect to object of reference that P4 is substitute
Value.
Second situation: for the second situation of first state in above-mentioned steps 201, the second state is weighing pot emptying
State after gas and the second preset time period of standing；
The second temperature of weighing pot in the second condition and the third quality difference value with respect to object of reference are obtained, substitute is obtained
4th quality difference value of opposite object of reference, when the weighing pot standing second that emptying gas is including but not limited in low temperature is default
Between section, until temperature increases, record weighing pot temperature T2 ' at this time, then weighing pot is opened and is weighed into balance system.At this point,
The left disk of balance system is placed with weighing pot, and right disk is placed with B counterweight, and recording balance reads P3 '.Weighing pot is opened again later
Out, A counterweight is opened into balance system, at this point, the left disk of balance system is placed with A counterweight, right disk is placed with B counterweight, recording balance
Read P4 '.
Under the second situation of the second state, T2 ' is the second temperature of weighing pot in the second condition, and P3 ' is
For weighing pot in the second condition with respect to the third quality difference value of object of reference, P4 ' is fourth mass of the substitute with respect to object of reference
Difference.
It should be noted that the present embodiment is not to the specific time of above-mentioned first preset time period and the second preset time period
Length is defined, for example, 10 minutes, 20 minutes, 30 minutes etc..
204: obtaining the second mass fiducial value between third quality difference value and the 4th quality difference value, obtain the second mass ratio
The second gravity difference compared with the product between value and acceleration of gravity, using obtained result as weighing pot with respect to substitute；
Wherein, when obtaining the second mass fiducial value between third quality difference value and the 4th quality difference value, including but it is unlimited
Subtract each other in by third quality difference value and the 4th quality difference value, obtained result is the second mass fiducial value.
For example, being directed to the first situation of above-mentioned second state, obtain between third quality difference value and the 4th quality difference value
The second mass fiducial value be P3-P4, obtaining the product between the second mass fiducial value and acceleration of gravity is (P3-
P4) * g, then weighing pot is (P3-P4) * g with respect to the second gravity difference of substitute in second temperature T2.
For example, being directed to the second situation of above-mentioned second state, obtain between third quality difference value and the 4th quality difference value
The second mass fiducial value be P3 '-P4 ', obtain third quality difference value compared with the second mass between the 4th quality difference value
Value is (P3 '-P4 ') * g, then weighing pot is (P3 '-P4 ') * with respect to the second gravity difference of substitute in second temperature T2
g。
It should be noted that above-mentioned steps 203 and step 204 correspond to step 102 shown in FIG. 1.
205: weighing pot is obtained by the sky of the first temperature to second temperature according to the first gravity difference and the second gravity difference
The changing value of lift of gas.
Alternatively, according to the first gravity difference and the second gravity difference obtain weighing pot by the first temperature to
The changing value of the aerostatic buoyancy of second temperature, including but not limited to:
The difference between the first gravity difference and the second gravity difference is obtained, using obtained result as weighing pot by first
Temperature to second temperature aerostatic buoyancy changing value.
For example, obtaining the first gravity difference and the second weight for above-mentioned first state and the first situation of the second state
Difference between power difference is are as follows:
(P1-P2) * g- (P3-P4) * g=(P1-P2-P3+P4) * g；
(P1-P2-P3+P4) * g be weighing pot by the first temperature T1 to second temperature T2 aerostatic buoyancy changing value.
For example, obtaining the first gravity difference and the second weight for above-mentioned first state and the second situation of the second state
Difference between power difference is are as follows:
(P1 '-P2 ') * g- (P3 '-P4 ') * g=(P1 '-P2 '-P3 '+P4 ') * g；
(P1 '-P2 '-P3 '+P4 ') * g is weighing pot by the variation of the aerostatic buoyancy of the first temperature T1 to second temperature T2
Value.
It should be noted that above-mentioned steps 205 correspond to step 103 shown in FIG. 1.
In conclusion the measurement method of aerostatic buoyancy variation provided in this embodiment, due to the substitute tool that quality is stable
There is the ability for saving quality measurements, simultaneously because being detached from measurement process with the weighing pot of alternating temperature, not will receive weighing pot temperature
Spend the influence of variation, it is possible to accurately save its mass value.By the stable symmetrical measuring tank of substitute of utilization quality not
Mass value under synthermal is compared method measurement and record, and it is all to contain deformation that weighing pot is brought due to temperature change etc.
The variation for the aerostatic buoyancy that correlative factor generates, it is all more fully accurate relative to the method introduced in the related technology, it is acquired
Result it is more true, intuitive and reliable.
One embodiment of the invention provides a kind of measurement method of aerostatic buoyancy variation, relative to real shown in above-mentioned Fig. 1
Example is applied, is counterweight with the stable substitute of quality and object of reference for ease of description, substitute is A counterweight, object of reference B
Counterweight, and for measuring in conjunction with balance system, method provided in this embodiment is described in detail.Wherein, balance system
System includes left disk and right disk, and when having object on left disk and right disk, balance can show that a reading, the reading are left disk and the right side
The quality difference value between object on disk.When method provided in this embodiment is embodied, using the B counterweight placement as object of reference
In the right disk of balance, weighing pot or substitute are illustrated for being individually positioned in the left disk of balance.Referring to FIG. 3, the air
The measurement method of buoyancy variation may comprise steps of:
301: obtaining the first temperature of weighing pot in the first state and the first quality difference value with respect to object of reference, obtain and claim
Second quality difference value of the substitute of measuring tank with respect to object of reference；
The implementation of the step 301 is identical as the principle of above-mentioned steps 201, specifically refers to above-mentioned steps 201, herein
It repeats no more.
302: obtaining the product between the first quality difference value and acceleration of gravity, obtain the first gravity reference value；Obtain the
Product between two quality difference values and acceleration of gravity obtains the second gravity reference value；Obtain the first gravity reference value and second
Difference between gravity reference value, the first gravity difference using obtained result as weighing pot with respect to substitute；
For example, being directed to the first situation of above-mentioned first state, obtain between the first quality difference value and acceleration of gravity
Product, obtaining the first gravity reference value is P1*g；The product between the second quality difference value and acceleration of gravity is obtained, obtains
Two gravity reference values are P2*g；The difference obtained between the first gravity reference value and the second gravity reference value is P1*g-P2*
G, P1*g-P2*g are weighing pot in first gravity difference of first temperature with respect to substitute.
For example, being directed to the second situation of above-mentioned first state, obtain between the first quality difference value and acceleration of gravity
Product, obtaining the first gravity reference value is P1 ' * g；The product between the second quality difference value and acceleration of gravity is obtained, is obtained
First gravity reference value is P2 ' * g；Obtaining the difference between the first gravity reference value and the second gravity reference value is P1 ' *
G-P2 ' * g, P1 ' * g-P2 ' * g is weighing pot in first gravity difference of first temperature with respect to substitute.
It should be noted that above-mentioned steps 301 and step 302 correspond to step 101 shown in FIG. 1.
303: obtaining the second temperature of weighing pot in the second condition and the third quality difference value with respect to object of reference, acquisition is replaced
The 4th quality difference value for object with respect to object of reference；
The implementation of the step 303 is identical as the principle of above-mentioned steps 203, specifically refers to above-mentioned steps 201, herein
It repeats no more.
304: obtaining the product between third quality difference value and acceleration of gravity, obtain third gravity reference value；Obtain the
Product between four quality difference values and acceleration of gravity obtains the 4th gravity reference value；Obtain third gravity reference value and the 4th
Difference between gravity reference value, the second gravity difference using obtained result as weighing pot with respect to substitute；
For example, being directed to the first situation of above-mentioned second state, obtain between third quality difference value and acceleration of gravity
Product, obtaining third gravity reference value is P3*g；The product between the 4th quality difference value and acceleration of gravity is obtained, obtains
Four gravity reference values are P4*g；The difference obtained between third gravity reference value and the 4th gravity reference value is P3*g-P4*
G, P3*g-P4*g are weighing pot in second gravity difference of the second temperature with respect to substitute.
For example, being directed to the second situation of above-mentioned second state, obtain between third quality difference value and acceleration of gravity
Product, obtaining third gravity reference value is P3 ' * g；The product between the 4th quality difference value and acceleration of gravity is obtained, is obtained
4th gravity reference value is P4 ' * g；The difference obtained between third gravity reference value and the 4th gravity reference value is P3 ' *
G-P4 ' * g, P3 ' * g-P4 ' * g is weighing pot in second gravity difference of the second temperature with respect to substitute.
It should be noted that above-mentioned steps 303 and step 404 correspond to step 102 shown in FIG. 1.
305: weighing pot is obtained by the sky of the first temperature to second temperature according to the first gravity difference and the second gravity difference
The changing value of lift of gas.
Alternatively, according to the first gravity difference and the second gravity difference obtain weighing pot by the first temperature to
The changing value of the aerostatic buoyancy of second temperature, including but not limited to:
The difference between the first gravity difference and the second gravity difference is obtained, using obtained result as weighing pot by first
Temperature to second temperature aerostatic buoyancy changing value.
For example, obtaining the first gravity difference and the second weight for above-mentioned first state and the first situation of the second state
Difference between power difference is are as follows:
P1*g-P2*g- (P3*g-P4*g)=(P1-P2-P3+P4) * g；
(P1-P2-P3+P4) * g be weighing pot by the first temperature T1 to second temperature T2 aerostatic buoyancy changing value.
For example, obtaining the first gravity difference and the second weight for above-mentioned first state and the second situation of the second state
Difference between power difference is are as follows:
P1 ' * g-P2 ' * g- (P3 ' * g-P4 ' * g)=(P1 '-P2 '-P3 '+P4 ') * g；
(P1 '-P2 '-P3 '+P4 ') * g is weighing pot by the variation of the aerostatic buoyancy of the first temperature T1 to second temperature T2
Value.
It should be noted that above-mentioned steps 305 correspond to step 103 shown in FIG. 1.
In conclusion the measurement method of aerostatic buoyancy variation provided in this embodiment, due to the substitute tool that quality is stable
There is the ability for saving quality measurements, simultaneously because being detached from measurement process with the weighing pot of alternating temperature, not will receive weighing pot temperature
Spend the influence of variation, it is possible to accurately save its mass value.By the stable symmetrical measuring tank of substitute of utilization quality not
Mass value under synthermal is compared method measurement and record, and it is all to contain deformation that weighing pot is brought due to temperature change etc.
The variation for the aerostatic buoyancy that correlative factor generates, it is all more fully accurate relative to the method introduced in the related technology, it is acquired
Result it is more true, intuitive and reliable.
Referring to FIG. 4, it illustrates the structures of the measuring device of aerostatic buoyancy provided by one embodiment of the present invention variation
Schematic diagram.As shown in figure 4, the measuring device of aerostatic buoyancy variation includes: that the first acquisition module 401, second obtains module
402, third obtains module the 403, the 4th and obtains module 404 and the 5th acquisition module 405.
Wherein, first module 401 is obtained, for obtaining weighing pot the first temperature in the first state and opposite object of reference
The first quality difference value, obtain second quality difference value of the substitute with respect to object of reference of weighing pot；
Second obtains module 402, and for being obtained according to the first quality difference value with the second quality difference value, weighing pot is opposite to be substituted
First gravity difference of object；
Third obtains module 403, for obtaining the of weighing pot second temperature in the second condition and opposite object of reference
Three quality difference values obtain fourth quality difference value of the substitute with respect to object of reference；
4th obtains module 404, and for being obtained according to third quality difference value with the 4th quality difference value, weighing pot is opposite to be substituted
Second gravity difference of object；
5th obtains module 405, for obtaining weighing pot by the first temperature according to the first gravity difference and the second gravity difference
Spend the changing value of the aerostatic buoyancy of second temperature；
Wherein, object of reference and substitute are the stable object of quality.
Optionally, second module 402 is obtained, for obtaining the first matter between the first quality difference value and the second quality difference value
Fiducial value is measured, the product between the first mass fiducial value and acceleration of gravity is obtained, obtained result is opposite as weighing pot
First gravity difference of substitute；
4th obtains module 404, compared with obtaining the second mass between third quality difference value and the 4th quality difference value
Value obtains the product between the second mass fiducial value and acceleration of gravity, using obtained result as weighing pot with respect to substitute
The second gravity difference.
Optionally, the second acquisition module 402 is obtained for obtaining the product between the first quality difference value and acceleration of gravity
To the first gravity reference value；The product between the second quality difference value and acceleration of gravity is obtained, the second gravity reference value is obtained；It obtains
The difference between the first gravity reference value and the second gravity reference value is taken, using obtained result as weighing pot with respect to substitute
The first gravity difference；
4th acquisition module 404 obtains third weight for obtaining the product between third quality difference value and acceleration of gravity
Power reference value；The product between the 4th quality difference value and acceleration of gravity is obtained, the 4th gravity reference value is obtained；Obtain third weight
Difference between power reference value and the 4th gravity reference value, the second gravity using obtained result as weighing pot with respect to substitute
Difference.
Optionally, the 5th module 405 is obtained, for obtaining the difference between the first gravity difference and the second gravity difference,
Using obtained result as weighing pot by the first temperature to second temperature aerostatic buoyancy changing value.
In conclusion the measuring device of aerostatic buoyancy variation provided in this embodiment, due to the substitute tool that quality is stable
There is the ability for saving quality measurements, simultaneously because being detached from measurement process with the weighing pot of alternating temperature, not will receive weighing pot temperature
Spend the influence of variation, it is possible to accurately save its mass value.By the stable symmetrical measuring tank of substitute of utilization quality not
Mass value under synthermal is compared method measurement and record, and it is all to contain deformation that weighing pot is brought due to temperature change etc.
The variation for the aerostatic buoyancy that correlative factor generates, it is all more fully accurate relative to the method introduced in the related technology, it is acquired
Result it is more true, intuitive and reliable.
It should be noted that the step serial number in above method embodiment does not represent the sequencing of step execution, it is real
In the application of border, above-mentioned steps can be executed with random order.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
Specific work process, can be with reference to the corresponding process in embodiment of the method, details are not described herein.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of measurement method of aerostatic buoyancy variation, which is characterized in that the described method includes:
The first temperature of weighing pot in the first state and the first quality difference value with respect to object of reference are obtained, the weighing pot is obtained
The relatively described object of reference of substitute the second quality difference value, obtained according to first quality difference value and second quality difference value
Take the first gravity difference of the relatively described substitute of the weighing pot；
The third quality difference value of weighing pot second temperature in the second condition and the relatively described object of reference is obtained, institute is obtained
The 4th quality difference value for stating the relatively described object of reference of substitute is obtained according to the third quality difference value and the 4th quality difference value
Take the second gravity difference of the relatively described substitute of the weighing pot；
It is obtained described in the weighing pot arrives by first temperature according to the first gravity difference and the second gravity difference
The changing value of the aerostatic buoyancy of second temperature；
Wherein, the object of reference and the substitute are the stable object of quality.
2. the method according to claim 1, wherein described according to first quality difference value and second matter
Amount difference obtains the first gravity difference of the relatively described substitute of the weighing pot, comprising:
The first mass fiducial value between first quality difference value and second quality difference value is obtained, first matter is obtained
The product between fiducial value and acceleration of gravity is measured, using obtained result as the first of the relatively described substitute of the weighing pot
Gravity difference；
It is described that the opposite substitute of the weighing pot is obtained according to the third quality difference value and the 4th quality difference value
Second gravity difference, comprising:
The second mass fiducial value between the third quality difference value and the 4th quality difference value is obtained, second matter is obtained
The product between fiducial value and acceleration of gravity is measured, using obtained result as the second of the relatively described substitute of the weighing pot
Gravity difference.
3. the method according to claim 1, wherein described according to first quality difference value and second matter
Amount difference obtains the first gravity difference of the relatively described substitute of the weighing pot, comprising:
The product between first quality difference value and acceleration of gravity is obtained, the first gravity reference value is obtained；Obtain described
Product between two quality difference values and the acceleration of gravity obtains the second gravity reference value；Obtain first gravity reference
Be worth the difference between the second gravity reference value, using obtained result as the of the relatively described substitute of the weighing pot
One gravity difference；
It is described that the opposite substitute of the weighing pot is obtained according to the third quality difference value and the 4th quality difference value
Second gravity difference, comprising:
The product between the third quality difference value and acceleration of gravity is obtained, third gravity reference value is obtained；Obtain described
Product between four quality difference values and the acceleration of gravity obtains the 4th gravity reference value；Obtain the third gravity reference
Be worth the difference between the 4th gravity reference value, using obtained result as the of the relatively described substitute of the weighing pot
Two gravity differences.
4. according to claim 1 to method described in any claim in 3, which is characterized in that described according to first weight
Power difference and the second gravity difference obtain the weighing pot by the aerostatic buoyancy of first temperature to the second temperature
Changing value, comprising:
The difference between the first gravity difference and the second gravity difference is obtained, using obtained result as the weighing
The changing value of aerostatic buoyancy of the tank by first temperature to the second temperature.
5. the method according to claim 1, wherein the first state is that the weighing pot is filled by empty to high speed
State after full gas；Second state is the weighing pot gassy and stands the state after the first preset time period.
6. the method according to claim 1, wherein the first state be the weighing pot by gassy to
State after high speed emptying gas；After second state is the weighing pot emptying gas and stands the second preset time period
State.
7. a kind of measuring device of aerostatic buoyancy variation, which is characterized in that described device includes:
First obtains module, and first for obtaining weighing pot the first temperature in the first state and opposite object of reference is of poor quality
Value, obtains the second quality difference value of the relatively described object of reference of substitute of the weighing pot；
Second obtains module, opposite for obtaining the weighing pot with second quality difference value according to first quality difference value
First gravity difference of the substitute；
Third obtains module, for obtaining the of weighing pot second temperature in the second condition and the relatively described object of reference
Three quality difference values obtain the 4th quality difference value of the relatively described object of reference of the substitute；
4th obtains module, opposite for obtaining the weighing pot with the 4th quality difference value according to the third quality difference value
Second gravity difference of the substitute；
5th obtains module, for obtaining the weighing pot by institute according to the first gravity difference and the second gravity difference
State the first temperature to the second temperature aerostatic buoyancy changing value；
Wherein, the object of reference and the substitute are the stable object of quality.
8. device according to claim 7, which is characterized in that described second obtains module, for obtaining first matter
The first mass fiducial value between difference and second quality difference value is measured, the first mass fiducial value is obtained and gravity accelerates
Product between degree, using obtained result as the first gravity difference of the relatively described substitute of the weighing pot；
Described 4th obtains module, for obtaining the second mass between the third quality difference value and the 4th quality difference value
Fiducial value obtains the product between the second mass fiducial value and acceleration of gravity, using obtained result as the weighing
Second gravity difference of the relatively described substitute of tank.
9. device according to claim 7, which is characterized in that described second obtains module, for obtaining first matter
The product between difference and acceleration of gravity is measured, the first gravity reference value is obtained；Obtain second quality difference value with it is described heavy
Product between power acceleration obtains the second gravity reference value；It obtains the first gravity reference value and second gravity is joined
The difference between value is examined, using obtained result as the first gravity difference of the relatively described substitute of the weighing pot；
The 4th acquisition module obtains third for obtaining the product between the third quality difference value and acceleration of gravity
Gravity reference value；The product between the 4th quality difference value and the acceleration of gravity is obtained, the 4th gravity reference value is obtained；
The difference between the third gravity reference value and the 4th gravity reference value is obtained, using obtained result as the weighing
Second gravity difference of the relatively described substitute of tank.
10. the device according to any claim in claim 7 to 9, which is characterized in that the described 5th obtains module,
For obtaining the difference between the first gravity difference and the second gravity difference, using obtained result as the weighing
The changing value of aerostatic buoyancy of the tank by first temperature to the second temperature.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598498A (en) * | 2004-07-23 | 2005-03-23 | 孔令宇 | Float weighing sensor and PID deviation control method for dynamic coeighing |
| CN1877324A (en) * | 2006-07-12 | 2006-12-13 | 哈尔滨工业大学 | Automatic measuring device for volume change of concrete |
| CN101526343A (en) * | 2009-04-17 | 2009-09-09 | 中国航空工业第一集团公司北京航空制造工程研究所 | Correction method for weighing result of deformation amount of gas cylinder in hydrostatic test |
| CN102645257A (en) * | 2011-02-22 | 2012-08-22 | 昆山市创新科技检测仪器有限公司 | Weight measuring device implemented by using buoyancy method |
| CN103697977A (en) * | 2013-12-20 | 2014-04-02 | 中国计量科学研究院 | Device and method for measuring adsorption mass of surface of weight |
| CN105705917A (en) * | 2013-11-08 | 2016-06-22 | 赛多利斯实验室仪器有限责任两合公司 | Precision scale or mass comparator with module for detecting a measurement uncertainty |
-
2016
- 2016-09-30 CN CN201610875675.XA patent/CN107884115B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598498A (en) * | 2004-07-23 | 2005-03-23 | 孔令宇 | Float weighing sensor and PID deviation control method for dynamic coeighing |
| CN1877324A (en) * | 2006-07-12 | 2006-12-13 | 哈尔滨工业大学 | Automatic measuring device for volume change of concrete |
| CN101526343A (en) * | 2009-04-17 | 2009-09-09 | 中国航空工业第一集团公司北京航空制造工程研究所 | Correction method for weighing result of deformation amount of gas cylinder in hydrostatic test |
| CN102645257A (en) * | 2011-02-22 | 2012-08-22 | 昆山市创新科技检测仪器有限公司 | Weight measuring device implemented by using buoyancy method |
| CN105705917A (en) * | 2013-11-08 | 2016-06-22 | 赛多利斯实验室仪器有限责任两合公司 | Precision scale or mass comparator with module for detecting a measurement uncertainty |
| CN103697977A (en) * | 2013-12-20 | 2014-04-02 | 中国计量科学研究院 | Device and method for measuring adsorption mass of surface of weight |
Non-Patent Citations (1)
| Title |
|---|
| 海拔、气压、温湿度等环境因素对参考实验室称量不确定度的影响;张卫威等;《临床检验杂志》;20141231;第32卷(第12期);944-947 * |
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