CN112669268A - Method, system and terminal for evaluating distribution uniformity of multiphase mixed concentration field - Google Patents
Method, system and terminal for evaluating distribution uniformity of multiphase mixed concentration field Download PDFInfo
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Abstract
The application discloses a method, a system and a terminal for evaluating the distribution uniformity of a multiphase mixed concentration field, wherein the method comprises the following steps of S1, receiving the distribution information of the concentration field and acquiring a pixel matrix; s2, processing the pixel matrix by using mathematical analogy of a local deviation function, and calculating and giving a local concentration difference function of a local rectangular region in an actual concentration field from the pixel matrix; s3, calculating single uneven coefficient of the density field distribution based on the obtained density local difference function, obtaining the overall uneven coefficient of the density field in a single picture, and judging the distribution unevenness of the density field based on the overall uneven coefficient. The technical method provided by the invention can evaluate the distribution uniformity of the multiphase mixed concentration field in the hydrometallurgy process, is simple, convenient and reliable, and can also be suitable for evaluating the uniformity of the temperature field.
Description
Technical Field
The application relates to the technical field of hydrometallurgy, in particular to a method, a system and a terminal for evaluating distribution uniformity of a multiphase mixed concentration field.
Background
Agitation mixing refers to the operation of agitating a liquid or solid to cause some form of circular flow, thereby homogenizing the material or accelerating physical or chemical processes.
In the hydrometallurgical process, stirring is in order to accelerate the efficiency of mixing, improves the homogeneity of concentration field.
The existing method for evaluating the distribution uniformity of the multiphase mixed concentration field mainly comprises the following steps: the method comprises a local deviation function method, a variation coefficient method and the like, but the methods have the technical defects of low accuracy, low evaluation range and insufficient reliability.
Disclosure of Invention
The application mainly aims to provide a method, a system and a terminal for evaluating the distribution uniformity of a multiphase mixed concentration field in a hydrometallurgy process, in particular to a stirring and mixing process of hydrometallurgy, so as to solve the current problems.
In order to achieve the above object, the present application provides the following techniques:
the invention provides a method for evaluating the distribution uniformity of a multiphase mixed concentration field, which comprises the following steps,
s1, receiving the concentration field distribution information to obtain a pixel matrix;
s2, processing the pixel matrix by using mathematical analogy of a local deviation function, and calculating and giving a local concentration difference function of a local rectangular region in an actual concentration field from the pixel matrix;
s3, calculating single uneven coefficient of the density field distribution based on the obtained density local difference function, obtaining the overall uneven coefficient of the density field in a single picture, and judging the distribution unevenness of the density field based on the overall uneven coefficient.
Preferably, in step S1, the acquiring concentration field distribution information acquires a pixel matrix, specifically:
carrying out gray level processing on the concentration field distribution information to obtain a concentration field gray level image;
and acquiring a corresponding pixel matrix according to the density field gray-scale map.
Preferably, the acquiring of the corresponding pixel matrix according to the density field gray-scale map includes:
setting a preset gray value;
dispersing the density field gray scale map into an element matrix based on the preset gray scale value;
and acquiring a pixel matrix corresponding to the density field gray level image according to the element matrix integration.
Preferably, the local difference function of concentration is:
wherein:
Tijrepresenting the gray value (i, j) epsilon {1, P }, theta at different positions1∈{1,P}，θ2E to {1, Q }; p and Q are the number of rows and columns of the gray matrix or the density matrix respectively; i, j denote the number of rows and columns, θ, respectively, at a point in the overall temperature field1、θ2The total number of rows and the total number of columns of the numerical points in the local rectangular area of the temperature field are respectively represented.
Preferably, in step S3, the calculating a single uneven coefficient of the density field distribution based on the obtained local density difference function, acquiring an overall uneven coefficient of the density field in a single picture, and determining the distribution unevenness of the density field based on the overall uneven coefficient includes:
dividing the concentration field according to a first distribution preset rule to obtain a unit concentration field area;
calculating a single nonuniform coefficient for the cell concentration field area based on the concentration local difference function;
a first unevenness representative value is acquired based on a single unevenness coefficient, and distribution unevenness of the density field is judged from the first unevenness representative value.
Preferably, in step S3, the calculating a single uneven coefficient of the density field distribution based on the obtained local density difference function, acquiring an overall uneven coefficient of the density field in a single picture, and determining the distribution unevenness of the density field based on the overall uneven coefficient, further includes:
dividing the concentration field according to a second distribution preset rule to obtain a unit concentration field area;
calculating a single nonuniform coefficient for the cell concentration field area based on the concentration local difference function;
a second unevenness representative value is acquired based on the single unevenness coefficient, and distribution unevenness of the density field is judged based on the second unevenness representative value.
Preferably, in step S3, the calculating a single uneven coefficient of the density field distribution based on the obtained local density difference function, acquiring an overall uneven coefficient of the density field in a single picture, and determining the distribution unevenness of the density field based on the overall uneven coefficient, further includes:
comparing the second unevenness representative value with the first unevenness representative value, and taking the largest as an unevenness representative judgment value; the distribution unevenness of the density field is judged based on the unevenness representative judgment value.
The second aspect of the present invention provides a multiphase mixed concentration field distribution uniformity evaluation system, which includes a storage and an actuator connected in communication, where the storage stores a program for implementing the multiphase mixed concentration field distribution uniformity evaluation method when the actuator executes the program.
A third aspect of the invention provides a terminal having the above-mentioned reservoir and actuator mounted thereon.
Compared with the prior art, this application can bring following technological effect:
1. the technical method provided by the invention can evaluate the distribution uniformity of the multiphase mixed concentration field in the hydrometallurgy process, is simple, convenient and reliable, and can also be suitable for evaluating the uniformity of a temperature field;
2. the method of the invention is non-contact, more intuitive, more reliable and strong in applicability, and relates to the fields of metallurgy, chemical industry, pharmacy and the like;
the method can be used for researching the concentration field cloud picture matrix and the gray level of a concentration field picture; the method can be used for researching the uniformity of the concentration field and evaluating the uniformity of the temperature field.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic flow diagram of the process of the present invention;
fig. 2 is a schematic diagram of the system of the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
The invention provides a novel method for evaluating the uniformity of a concentration field, which is simple, convenient and reliable and can be also suitable for evaluating the uniformity of a temperature field.
The invention utilizes mathematical analogy of local deviation function to process the pixel matrix of the density field gray scale image, and calculates and provides the density local difference function of the local rectangular area in the actual density field from the pixel matrix.
And dividing the concentration field into unit concentration field areas in different directions according to a first distribution preset rule by using a concentration local difference function, respectively comparing the unit concentration field areas to obtain the optimal non-uniform coefficient, and finally judging the distribution non-uniformity of the concentration field.
As shown in fig. 1, the first aspect of the present invention provides a method for evaluating the distribution uniformity of a multiphase mixed concentration field, comprising the following steps,
s1, receiving the concentration field distribution information to obtain a pixel matrix;
preferably, in step S1, the acquiring concentration field distribution information acquires a pixel matrix, specifically:
carrying out gray level processing on the concentration field distribution information to obtain a concentration field gray level image;
and acquiring a corresponding pixel matrix according to the density field gray-scale map.
Preferably, the acquiring of the corresponding pixel matrix according to the density field gray-scale map includes:
setting a preset gray value;
dispersing the density field gray scale map into an element matrix based on the preset gray scale value;
and acquiring a pixel matrix corresponding to the density field gray level image according to the element matrix integration.
And carrying out gray processing on the density field cloud picture or the photo, wherein the gray image is a matrix which expresses gray values by integer values between 0 and 255, each matrix element corresponds to one pixel on the image, and a pixel matrix is obtained.
The concentration field distribution information may be concentration field cloud or concentration field photographic data.
S2, processing the pixel matrix by using mathematical analogy of a local deviation function, and calculating and giving a local concentration difference function of a local rectangular region in an actual concentration field from the pixel matrix;
the pixel matrix is required to be combined, the pixel matrix is processed by utilizing mathematical analogy of a local deviation function, a concentration local difference function is given, later-stage concentration field calculation is facilitated, a non-uniformity coefficient can be calculated conveniently by utilizing a concentration local difference function formula, and non-uniformity of a picture area is judged conveniently according to the non-uniformity coefficient.
S3, calculating single uneven coefficient of the density field distribution based on the obtained density local difference function, obtaining the overall uneven coefficient of the density field in a single picture, and judging the distribution unevenness of the density field based on the overall uneven coefficient.
The technology adopts a concentration local difference function, decomposes a concentration field firstly, calculates single uneven coefficients of each decomposition area respectively, finds out the position of the most uneven in the concentration field according to the single uneven coefficients and judges uneven degree.
And acquiring the overall non-uniformity coefficient of the concentration field in a single picture, and judging the non-uniformity of the whole picture.
And finally, summing the integral nonuniformity of the concentration field in the single picture, and judging the distribution nonuniformity of the concentration field based on the integral nonuniformity coefficient.
Preferably, the local difference function of concentration is:
wherein:
Tijrepresenting the gray value (i, j) epsilon {1, P }, theta at different positions1∈{1,P}，θ2E to {1, Q }; p and Q are the number of rows and columns of the gray matrix or the density matrix respectively; i, j denote the number of rows and columns, θ, respectively, at a point in the overall temperature field1、θ2The total number of rows and the total number of columns of the numerical points in the local rectangular area of the temperature field are respectively represented.
Preferably, in step S3, the calculating a single uneven coefficient of the density field distribution based on the obtained local density difference function, acquiring an overall uneven coefficient of the density field in a single picture, and determining the distribution unevenness of the density field based on the overall uneven coefficient includes:
dividing the concentration field according to a first distribution preset rule to obtain a unit concentration field area;
calculating a single nonuniform coefficient for the cell concentration field area based on the concentration local difference function;
a first unevenness representative value is acquired based on a single unevenness coefficient, and distribution unevenness of the density field is judged from the first unevenness representative value.
The first distribution preset rule is: the concentration field is divided into n areas of equal width from left to right according to the required precision!
The larger n is, the higher the precision is, but n can not be too large, and the method can be selected according to actual conditions.
Obtaining n in a single graph1，n2…nnThe N equal-size areas are equal, and the nonuniformity coefficients N of the areas are obtained, wherein NmaxRepresents the least uniform concentration field and may be based on NmaxThe position of the most uneven position in the density field is found, and the degree of unevenness is determined. N is a radical ofmaxThe larger the non-uniformity of the local area of the concentration field.
The method divides the concentration field into N areas with equal size for calculation, achieves controllable accuracy when solving the nonuniformity coefficient N, and solves the defects of the existing method for evaluating the uniformity of the concentration field;
to ensure that the resulting non-uniformity coefficients are representative, the present embodiment recalculates.
Preferably, in step S3, the calculating a single uneven coefficient of the density field distribution based on the obtained local density difference function, acquiring an overall uneven coefficient of the density field in a single picture, and determining the distribution unevenness of the density field based on the overall uneven coefficient, further includes:
dividing the concentration field according to a second distribution preset rule to obtain a unit concentration field area;
calculating a single nonuniform coefficient for the cell concentration field area based on the concentration local difference function;
a second unevenness representative value is acquired based on the single unevenness coefficient, and distribution unevenness of the density field is judged based on the second unevenness representative value.
The second distribution preset rule is as follows: the concentration field is divided from top to bottom.
Repeating the counting processing steps according to the first distribution preset rule to obtain Nmax’。
Preferably, in step S3, the calculating a single uneven coefficient of the density field distribution based on the obtained local density difference function, acquiring an overall uneven coefficient of the density field in a single picture, and determining the distribution unevenness of the density field based on the overall uneven coefficient, further includes:
comparing the second unevenness representative value with the first unevenness representative value, and taking the largest as an unevenness representative judgment value; the distribution unevenness of the density field is judged based on the unevenness representative judgment value.
When determining the distribution nonuniformity of the concentration field, N is setmax' and NmaxA comparison was made where the larger value represents the non-uniformity across the picture.
The method divides the concentration field into N regions with equal size, calculates, finds out the uneven position in single or multiple pictures of the concentration field, judges the degree of unevenness, obtains the total uneven coefficient Ntotal in the single or multiple pictures, and finally obtains the uniformity coefficient NUniformity＝1-(1/NGeneral assembly)。
Example 2
The second aspect of the present invention provides a multiphase mixed concentration field distribution uniformity evaluation system, which includes a storage and an actuator connected in communication, where the storage stores a program for implementing the multiphase mixed concentration field distribution uniformity evaluation method when the actuator executes the program.
As shown in FIG. 2, the evaluation system of the present invention has a memory and an actuator, which are connected by a communication line and can execute a program to realize the method!
The storage is stored with a program which can be used for realizing the method for evaluating the distribution uniformity of the multiphase mixed concentration field when the actuator executes the program.
Example 3
A third aspect of the present invention is to provide a terminal having the reservoir and actuator of embodiment 2 mounted thereon.
As an application of the present technology, the present technology provides a terminal on which the memory and the actuator described in embodiment 2 are mounted.
Those skilled in the art will appreciate that the modules or steps of the invention described above can be implemented in a general purpose computing device, centralized on a single computing device or distributed across a network of computing devices, and optionally implemented in program code that is executable by a computing device, such that the modules or steps are stored in a memory device and executed by a computing device, fabricated separately into integrated circuit modules, or fabricated as a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A method for evaluating the distribution uniformity of a multiphase mixed concentration field is characterized by comprising the following steps,
s1, receiving the concentration field distribution information to obtain a pixel matrix;
s2, processing the pixel matrix by using mathematical analogy of a local deviation function, and calculating and giving a local concentration difference function of a local rectangular region in an actual concentration field from the pixel matrix;
s3, calculating single uneven coefficient of the density field distribution based on the obtained density local difference function, obtaining the overall uneven coefficient of the density field in a single picture, and judging the distribution unevenness of the density field based on the overall uneven coefficient.
2. The method for evaluating the uniformity of the distribution of the multiphase hybrid concentration field according to claim 1, wherein in step S1, the obtaining of the distribution information of the concentration field and the obtaining of the pixel matrix specifically comprise:
carrying out gray level processing on the concentration field distribution information to obtain a concentration field gray level image;
and acquiring a corresponding pixel matrix according to the density field gray-scale map.
3. The method for evaluating the distribution uniformity of the multiphase mixed concentration field according to claim 2, wherein the corresponding pixel matrix is obtained according to the concentration field gray scale map, and the specific positions are as follows:
setting a preset gray value;
dispersing the density field gray scale map into an element matrix based on the preset gray scale value;
and acquiring a pixel matrix corresponding to the density field gray level image according to the element matrix integration.
4. The method according to claim 1, wherein the local concentration difference function is:
wherein:
Tijrepresenting the gray value (i, j) epsilon 1, P +, theta at different positions1∈*1,P+，θ2E 1, Q +; p and Q are the number of rows and columns of the gray matrix or the density matrix respectively; i, j denote the number of rows and columns, θ, respectively, at a point in the overall temperature field1、θ2The total number of rows and the total number of columns of the numerical points in the local rectangular area of the temperature field are respectively represented.
5. The method for evaluating the distribution uniformity of the multi-phase hybrid concentration field according to claim 4, wherein in step S3, the calculating a single nonuniformity coefficient of the concentration field distribution based on the obtained local concentration difference function, obtaining an overall nonuniformity coefficient of the concentration field in a single picture, and determining the distribution nonuniformity of the concentration field based on the overall nonuniformity coefficient includes:
dividing the concentration field according to a first distribution preset rule to obtain a unit concentration field area;
calculating a single nonuniform coefficient for the cell concentration field area based on the concentration local difference function;
a first unevenness representative value is acquired based on a single unevenness coefficient, and distribution unevenness of the density field is judged from the first unevenness representative value.
6. The method for evaluating the distribution uniformity of the multi-phase hybrid concentration field according to claim 5, wherein in step S3, the calculating a single nonuniform coefficient of the concentration field distribution based on the obtained local density difference function, obtaining a global nonuniform coefficient of the concentration field in a single picture, and judging the distribution nonuniformity of the concentration field based on the global nonuniform coefficient, further comprises:
dividing the concentration field according to a second distribution preset rule to obtain a unit concentration field area;
calculating a single nonuniform coefficient for the cell concentration field area based on the concentration local difference function;
a second unevenness representative value is acquired based on the single unevenness coefficient, and distribution unevenness of the density field is judged based on the second unevenness representative value.
7. The method for evaluating the distribution uniformity of the multi-phase hybrid concentration field according to claim 6, wherein in step S3, the calculating a single nonuniform coefficient of the concentration field distribution based on the obtained local density difference function, obtaining a global nonuniform coefficient of the concentration field in a single picture, and judging the distribution nonuniformity of the concentration field based on the global nonuniform coefficient, further comprises:
comparing the second unevenness representative value with the first unevenness representative value, and taking the largest as an unevenness representative judgment value; the distribution unevenness of the density field is judged based on the unevenness representative judgment value.
8. A multiphase mixed concentration field distribution uniformity evaluation system, comprising a storage and an actuator which are connected in communication, wherein the storage stores a program which can be used by the actuator to implement a multiphase mixed concentration field distribution uniformity evaluation method as claimed in any one of claims 1 to 7 when the program is executed by the actuator.
9. A terminal, characterized in that the holder and actuator of claim 8 are mounted on the terminal.
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