CN110220567A - Real time inventory volume measurement method for irregular container - Google Patents
Real time inventory volume measurement method for irregular container Download PDFInfo
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- CN110220567A CN110220567A CN201910629925.5A CN201910629925A CN110220567A CN 110220567 A CN110220567 A CN 110220567A CN 201910629925 A CN201910629925 A CN 201910629925A CN 110220567 A CN110220567 A CN 110220567A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
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Abstract
The present invention relates to intelligent measurement fields, disclose a kind of real time inventory volume measurement method for irregular container, under the premise of guaranteeing safety, to realize the monitoring of the accurate real-time storage capacity of irregular terrine.The present invention by carrying out fluid injection experiment to target container, obtains volumetric values corresponding to target container difference level value and each level value first；The level value and volumetric values for being then based on acquisition carry out Function Fitting, and then obtain volume-level curve corresponding to function；When finally carrying out real time volume detection to target container, the liquid level of liquid is injected in real-time detection container, while the liquid level data that will test is converted into volume by volume-level curve.The present invention is suitable for irregular terrine and carries out real time inventory volume measurement.
Description
Technical field
The present invention relates to intelligent measurement fields, in particular to are used for the real time inventory volume measurement method of irregular container.
Background technique
Intelligent volume measurement can realize that such as water filling, 3-D scanning are built there are many method now with the development of technology
Mould, the calculating of physical size segmented etc..But in view of the difference of application environment, the method that is applicable in can difference.This method master
It will need to storage wine in the pure irregular terrine made by hand differentiated to volumes various in wine cellar based on certain large-scale Liquor-making Enterprises &
Volume is monitored in real time and is proposed.Since the Conservation environment of finished wine there are strict requirements to fire-proof and explosion-proof, and store food
It is also not allow for any pollution that spot scan is labeled such as three-dimensional with the terrine of grade wine product itself, so this application scene wouldn't
Consider the method for 3-D scanning modeling；Further, since this technology background is to need the real-time storage of stored wine in accurate monitoring terrine
Amount, the loss etc. of analysis wine volatilization is carried out with this data, therefore has very high requirement to the accuracy of result.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of real time inventory volume measurement side for irregular container
Method, under the premise of guaranteeing safety, to realize the monitoring of the accurate real-time storage capacity of irregular terrine.
To solve the above problems, the technical solution adopted by the present invention is that: the real time inventory volume for irregular container is examined
Survey method, comprising the following steps:
A. it by carrying out fluid injection experiment to target container, obtains corresponding to target container difference level value and each level value
Volumetric values；
B. Function Fitting is carried out based on the step A level value obtained and volumetric values, and then obtains volume-corresponding to function
Level curve；
When C. carrying out real time volume detection to target container, the liquid level of liquid is injected in real-time detection container, while will inspection
The liquid level data of survey is converted into volume by volume-level curve.
Further, it is contemplated that loss and other safety factor are counted using water as subject in the present invention
According to extraction and verifying, i.e., fluid injection described in step A experiment be flood-pot experiment.
Specifically, the fit approach of step B is including but not limited to spline interpolation, Gauss interpolation, linear interpolation etc., other are inserted
Value mode, the selection of specific interpolation method need to be analyzed selected as the case may be.In the present invention, step B can pass through cubic spline
Interpolation method carries out Function Fitting；When cubic spline interpolation Function Fitting, if the level value data point of section [a, b] is { x1, x2,
x3..., xn, corresponding volumetric values { y1, y2, y3..., yn, wherein a=min (x), b=max (x)；Then fitting function is in [xj,
xj+1], on the section (j=1,2 ..., n-1), expression formula S (x) is a cubic polynomial, it is set as:
S (x)=ajx3+bjx2+cjx+dj, (j=1,2 ..., n)
S (x) meets following boundary condition:
1)、S(xj)=yj
2) other points, at non-endpoint are continuous
S(xj- 0)=S (xj+ 0), (j=2,3 ..., n-1)
3) first derivative is continuous
S′(xj- 0)=S ' (xj+ 0), (j=2,3 ..., n-1)
4) second dervative is continuous
S″(xj- 0)=S " (xj+ 0), (j=2,3 ..., n-1)
It substitutes into upper boundary conditions, finally acquires the expression formula of the S (x) on each section are as follows:
Wherein Metzler matrix meets following relationship:
In formula,
Further, step A, level sensing mode can be supersonic liquid level detection or radar wave level sensing in C.This
In invention, step A, the ultrasonic liquid leveller that C can be used that precision is 0.1mm obtains the liquid level of injection liquid.
The beneficial effects of the present invention are: the present invention is obtained by monitoring in real time to the volume and liquid level that inject liquid
Then one-to-one data carry out data processing to the data of extraction, it is bent to obtain unique volume corresponding to the container-liquid level
Line can finally obtain the corresponding liquid capacity of different liquid levels, so that the data analysis for the later period provides data according to this curve
Support.This method realizes the volume measurement of low error rate under the premise of having taken into account safety, ease for operation.It is especially suitable
In requiring environment, precision etc. relatively high detection scene, in such as large-scale wine cellar, the detection etc. of wine tank reserves volume.
Detailed description of the invention
Fig. 1 is the flow chart for the real time inventory volume measurement method for irregular terrine that embodiment proposes.
Specific embodiment
The invention proposes a kind of real-time storage capacity volume monitoring method for irregular container, this method implements operation
It is simple and safe, and accuracy is high.Be particularly suitable for surrounding enviroment to detection mode degree of safety require it is relatively high, such as store up wine or other
The application in the fluid storages such as explosive, volatile field.The principle of the monitoring method is to pass through the volume and liquid level to injection liquid
It is monitored in real time, obtains one-to-one data, data processing then is carried out to the data of extraction, obtain corresponding to the container
Unique volume-level curve the corresponding liquid capacity of different liquid levels can finally be obtained, to be the later period according to this curve
Data analysis provide data supporting.
The present invention specifically may include following steps:
A. it by carrying out fluid injection experiment to target container, obtains corresponding to target container difference level value and each level value
Volumetric values.In view of loss and other safety factors, the extraction of data is carried out in the present invention as subject using water
With verifying, i.e. the experiment of fluid injection described in step A is flood-pot experiment.
B. Function Fitting is carried out based on the step A level value obtained and volumetric values, and then obtains volume-corresponding to function
Level curve.
The fit approach of step B including but not limited to other interpolation methods such as spline interpolation, Gauss interpolation, linear interpolation,
The selection of specific interpolation method need to be analyzed selected as the case may be.
When C. carrying out real time volume detection to target container, the liquid level of liquid is injected in real-time detection container, while will inspection
The liquid level data of survey is converted into volume by volume-level curve.
Step A, level sensing mode can be supersonic liquid level detection or radar wave level sensing in C.In the present invention, step
The liquid level that the ultrasonic liquid leveller that precision is 0.1mm obtains injection liquid can be used in rapid A, C.
Below by embodiment, the present invention will be further described.
Embodiment proposes a kind of real time inventory volume measurement method for irregular terrine, and this method is taking into account peace
Under the premise of Quan Xing, ease for operation, the volume measurement of low error rate is realized.It is particularly suitable for requiring ratio to environment, precision etc.
Higher detection scene, in large-scale wine cellar, the detection etc. of wine tank reserves volume.As shown in Figure 1, embodiment mainly includes note
Water, data acquisition, data processing, generation volume curve, the detection of real-time liquid level and the acquisition of real time inventory volume and etc..Institute
The flood-pot experiment stated, it is main to choose based on the high aqueous medium of safety coefficient.The data acquisition, wherein volume measurement include
But the detection modes such as the containers such as measuring cup, intellectual water meter are not limited to, level detection is including but not limited to detections sides such as ultrasonic wave, radars
Formula.The data processing mainly carries out corresponding curve distribution fitting to the volume of acquisition and fluid level data, to seek to most
It is suitble to liquid level-volume curve of current detection object, so that the real time inventory volume measurement link for the later period provides science
Data supporting.
For embodiment specifically using the terrine that capacity is 7L or so as object of experiment object, water fill volume detection uses precision for 1ml
Intellectual water meter, level sensing uses precision for the ultrasonic liquid leveller of 0.1mm.Object is infused based on the experiment porch
Water experiment, as follows embodiment to be described in further detail:
1, flood-pot experiment.Mainly using pure water as medium, rank is carried out to experiment terrine using the water pipe for being connected to intellectual water meter
Section property water filling, and every time in order to guarantee that liquid level rapidly enters static condition, auxiliary water filling is carried out using hose funnel.Note every time
Water finishes, and records the reading v of respective meter.After ultrasonic liquid leveller is fixed and returned to zero, in slack tank, detection tank bottom is arrived
The distance H of ultrasonic probe is detected under current water fill volume, corresponding ultrasound after liquid surface static using ultrasonic liquid leveller
The height h that wave is popped one's head in apart from liquid level；
2, data acquisition.I.e. by the method in a step, by the measurement of multiple data, we can obtain one group of appearance
This group of data record is entered data.xls by the data of product (v)-liquid level (H-h), the i.e. one-to-one numerical value of v- (H-h)
In file, processing is transferred so as to subsequent step；
3, data processing.Mainly the data in data.xls file are extracted and handled, wherein high with real-time liquid level
Degree is independent variable x according to (H-h), and v is dependent variable y, carries out corresponding functional relation fitting.For the sample object, pass through knot
Fruit comparative analysis, final choice cubic spline interpolation obtain the function corresponding relationship closest to sample value.Wherein section
The level value data point of [a, b] is { x1, x2, x3..., xn, corresponding volumetric values { y1, y2, y3..., yn, wherein a=min (x), b
=max (x), level value data point are { x1, x2, x3..., xnIntermediate compartment is away from being 0.1；Then fitting function is in [xj,
xj+1], on the section (j=1,2 ..., n-1), expression formula S (x) is a cubic polynomial, it is set as:
S (x)=ajx3+bjx2+cjx+dj, (j=1,2 ..., n)
S (x) meets following boundary condition:
1)、S(xj)=yj
2) other points, at non-endpoint are continuous
S(xj- 0)=S (xj+ 0), (j=2,3 ..., n-1)
3) first derivative is continuous
S′(xj- 0)=S ' (xj+ 0), (j=2,3 ..., n-1)
4) second dervative is continuous
S″(xj- 0)=S " (xj+ 0), (j=2,3 ..., n-1)
It substitutes into upper boundary conditions, finally acquires the expression formula of the S (x) on each section are as follows:
Wherein Metzler matrix meets following relationship:
In formula,
4, volume curve is generated.The respective function relationship of volume and liquid level in step c is carried out curve fitting, is generated
The volume curve of one closest object actual conditions, is intuitively shown by curve, and is used for subsequent data
It reads；
5, real-time liquid level detection.I.e. by ultrasonic liquid leveller, detect that current reserves liquid level is visited apart from ultrasonic wave
The distance of head, and by calculating, it obtains under current reserves, the liquid level of liquid in terrine；
6, the acquisition of real time inventory volume.I.e. by the data in step e, the x coordinate value in d in volume curve is obtained,
By corresponding functional relation, final y value, i.e., the value of current reserves volume can finally be calculated.Finally by above place
Reason process is shown by the visual interface of a summary.
Claims (4)
1. being used for the real time inventory volume measurement method of irregular container, which comprises the steps of:
A. by carrying out fluid injection experiment to target container, appearance corresponding to target container difference level value and each level value is obtained
Product value；
B. Function Fitting is carried out based on the step A level value obtained and volumetric values, and then obtains volume-liquid level corresponding to function
Curve；
When C. carrying out real time volume detection to target container, the liquid level of liquid is injected in real-time detection container, while will test
Liquid level data is converted into volume by volume-level curve.
2. being used for the real time inventory volume measurement method of irregular container as described in claim 1, which is characterized in that in step A
The fluid injection experiment is flood-pot experiment.
3. being used for the real time inventory volume measurement method of irregular container as described in claim 1, which is characterized in that step B is logical
It crosses cubic spline interpolation and carries out Function Fitting；When cubic spline interpolation Function Fitting, if the liquid level Value Data of section [a, b]
Point is { x1, x2, x3..., xn, corresponding volumetric values { y1, y2, y3..., yn, wherein a=min (x), b=max (x)；Then it is fitted letter
Number is in [xj, xj+1], on the section (j=1,2 ..., n-1), expression formula S (x) is a cubic polynomial, it is set as:
S (x)=ajx3+bjx2+cjx+dj, (j=1,2 ..., n)
S (x) meets following boundary condition:
1)、S(xj)=yj
2) other points, at non-endpoint are continuous
S(xj- 0)=S (xj+ 0), (j=2,3 ..., n-1)
3) first derivative is continuous
S′(xj- 0)=S ' (xj+ 0), (j=2,3 ..., n-1)
4) second dervative is continuous
S″(xj- 0)=S " (xj+ 0), (j=2,3 ..., n-1)
It substitutes into upper boundary conditions, finally acquires the expression formula of the S (x) on each section are as follows:
Wherein Metzler matrix meets following relationship:
In formula,
4. being used for the real time inventory volume measurement method of irregular container as described in claim 1, which is characterized in that step A or C
The liquid level of injection liquid is obtained by ultrasonic liquid leveller.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040875A1 (en) * | 2021-09-17 | 2023-03-23 | 海尔智家股份有限公司 | Refrigeration appliance and method for measuring container contents |
| CN116499544A (en) * | 2023-06-30 | 2023-07-28 | 广东润宇传感器股份有限公司 | Storage tank volume calibration method, system, electronic equipment and storage medium |
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Application publication date: 20190910 |