CN113237202A

CN113237202A - Position determination method and device, air conditioning system and readable storage medium

Info

Publication number: CN113237202A
Application number: CN202110690203.8A
Authority: CN
Inventors: 李斌; 杨睿贤; 郑春元; 丁云霄; 翟晓强
Original assignee: Shanghai Jiaotong University; GD Midea Heating and Ventilating Equipment Co Ltd
Current assignee: Shanghai Jiaotong University; GD Midea Heating and Ventilating Equipment Co Ltd; Guangdong Midea HVAC Equipment Co Ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-08-10
Also published as: EP4300002A1; WO2022267296A1

Abstract

The invention provides a position determination method, a position determination device, an air conditioning system and a readable storage medium, wherein the position determination method comprises the following steps: acquiring return air temperature information of each indoor unit; determining a first correlation coefficient between every two indoor units according to the return air temperature information; classifying the indoor units according to the first correlation coefficient to obtain a set number of classification groups; in each classification group, any indoor unit is used as a positioning point, relative position information is generated according to the first correlation coefficient, and maintenance personnel do not need to manually maintain the relative position relationship among the indoor units, so that the maintenance difficulty of the relative position relationship among the indoor units is reduced, and the time cost and the labor cost required by maintenance are favorably reduced.

Description

Position determination method and device, air conditioning system and readable storage medium

Technical Field

The invention relates to the technical field of control, in particular to a position determining method and device, an air conditioning system and a readable storage medium.

Background

As shown in fig. 1, in an indoor installation environment in which a plurality of indoor units are installed, the plurality of indoor units are subjected to coordinated control, and before the coordinated control, it is necessary to acquire the relative positions between the indoor units.

The technical personnel in the field find that in the existing scheme, the maintenance of the relative positions of the indoor units consumes more time and energy, the maintenance cost is higher, and the maintenance requirement at the present stage cannot be met.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the invention provides a position determination method.

In a second aspect of the invention, a position determining apparatus is provided.

A third aspect of the present invention is to provide an air conditioning system.

A fourth aspect of the present invention is to provide a readable storage medium.

In view of the above, according to a first aspect of the present invention, there is provided a position determination method including: acquiring return air temperature information of each indoor unit; determining a first correlation coefficient between every two indoor units according to the return air temperature information; classifying the indoor units according to the first correlation coefficient to obtain a set number of classification groups; in each classification group, any indoor unit is used as an anchor point, and relative position information is generated according to the first correlation coefficient.

The technical scheme of the application provides a position determining method, and the detection of the relative positions of a plurality of indoor units can be realized by operating the position determining method, and in the process, maintenance personnel do not need to manually maintain the relative position relationship of the indoor units, so that the maintenance difficulty of the relative position relationship of the indoor units is reduced, and the time cost and the labor cost required by maintenance are reduced.

The technical scheme of this application is realized based on following principle, specifically, the position that different indoor set installed is different, has the interval between the different indoor sets, and this interval can be different because of the difference of mounted position. Due to the existence of the space, the influence among different indoor units is inconsistent, for example, when one indoor unit is in a first sealed environment, the other indoor unit is in a second sealed environment, wherein, no heat transfer exists between the first sealed environment and the second sealed environment, and in this case, the influence among the indoor units in the different sealed environments is not consistent. When a plurality of indoor units exist in one sealed environment, different indoor units have influence.

The technical scheme of the application is just to realize the estimation of the relative position information between different indoor units by collecting the influences and utilizing the correlation between the influences and the distances between the different indoor units.

Considering that the indoor units are devices for adjusting the temperature in the sealed environment, one sealed environment is commonly used among the indoor units having an influence, and therefore, the influence can be extracted by collecting the return air temperature information of the indoor units, specifically, the return air temperature information of a plurality of indoor units is obtained by traversal. If the two indoor units are close to each other, the influence between the two indoor units is serious, and the correlation coefficient between every two indoor units in the indoor units is determined to be larger according to the obtained return air temperature information, so that the distance between different indoor units can be represented according to the correlation coefficient.

After the distances between every two indoor units are determined, whether the indoor units belong to the same classification group or not can be classified according to the distances.

The correlation coefficient between different indoor units can represent the distance between different indoor units, so that after the classification of the classification group is finished, any indoor unit in the classified group obtained by the classification can be used as a positioning point to obtain the relative position relation between other indoor units in the classification group, and after all the classification groups are traversed, the relative distribution condition of all the indoor units, namely the relative position information in the application, can be obtained.

In any of the above technical solutions, the return air temperature information of the indoor unit may be a discrete temperature value, that is, the return air temperature information detected by the indoor unit every fixed detection time has a representation form of a temperature sequence.

In one of the technical solutions, it can be understood that the return air temperature information is temperature information at the position of the return air inlet of the indoor unit.

In one technical scheme, a temperature sensor can be arranged at the air return opening of the indoor unit, and the temperature sensor is utilized to acquire temperature information at the position of the air return opening.

In addition, the location determining method claimed in the present application further has the following additional distinguishing technical features, specifically, including:

in the above technical solution, determining a first correlation coefficient between every two indoor units according to the return air temperature information specifically includes: determining the covariance of corresponding return air temperature information between every two indoor units; determining a variance value of return air temperature information corresponding to each indoor unit; a first correlation coefficient is determined based on the variance and the covariance.

In this technical solution, a determination scheme of the first correlation coefficient is specifically defined, and specifically, a calculation formula of the first correlation coefficient is as follows:

wherein, X is one indoor machine in every two indoor machines, Y is the other indoor machine in every two indoor machines, cov (X, Y) is the covariance of X and Y return air temperature information, VarX is the variance of X return air temperature information, and VarY is the variance of Y return air temperature information.

In any of the above technical solutions, classifying the plurality of indoor units according to the first correlation coefficient to obtain a set number of classification groups includes: dividing the two indoor units with the maximum first correlation coefficient into one type; the indoor units which are classified into one category are used as first indoor units, second correlation coefficients between the first indoor units and the rest outdoor units except the first indoor units in the indoor units are respectively determined, and the two indoor units with the largest second correlation number are classified into one category until the indoor units are classified into one category; setting a correlation coefficient threshold value for the second correlation number according to the set number of the classification groups; and dividing the indoor units according to the second correlation coefficient and the correlation coefficient threshold value to obtain a set number of classification groups.

In the technical scheme, the distance between different indoor units can be represented according to the first correlation coefficient, so that after the first correlation coefficient between every two indoor units in the indoor units is determined, the obtained first correlation coefficient can be arranged in size, and then the two indoor units with the maximum correlation coefficient are determined.

After determining two indoor units with the shortest distance, judging whether other indoor units are classified to be finished, if so, further judging whether a plurality of indoor units are classified into one classification group, namely whether the number of the classified classification groups is only one, and if so, arranging the indoor units according to the first correlation coefficient.

In the above case, the set number is obtained, and the set number is used to represent how many classification groups the multiple indoor opportunities are divided into, so that the correlation coefficient threshold value can be set according to the set number, so as to divide the indoor units in the classification groups according to the set correlation coefficient threshold value, and finally obtain the set number of classification groups.

In the process, by the scheme, the classified processing of the indoor units which are not classified is realized, the rationality of obtaining the classification groups by classifying the indoor units is improved, and the accuracy of the relative position information of the indoor units is ensured.

In any technical scheme, the method further comprises the following steps: acquiring space partition information for installing a plurality of indoor units; and determining the set number of the classification groups according to the space partition information.

In the technical scheme, the set number is determined according to the acquired space partition information, so that the set number can be reasonably set according to the space for installing the indoor units, in the process, the influence on the selection of the preset threshold value due to unreasonable setting of the set number is reduced, the accuracy of the relative position information of the indoor units is ensured, and finally the maintenance difficulty of maintenance personnel on the relative position information is reduced, such as the manpower operation cost and the time cost are reduced.

In any of the above technical solutions, the space partition information may be determined according to information collected by an installer when installing a plurality of indoor units.

In any of the above technical solutions, the spatial distribution information may be room division information or office area division.

In any of the above technical solutions, generating the relative position information according to the first correlation coefficient by using any indoor unit as an anchor point specifically includes: determining a quantization value corresponding to the first correlation coefficient according to a preset quantization relation; obtaining coordinate information of the indoor units except any indoor unit according to the quantized values and the positioning points; and generating relative position information according to the positioning point and the coordinate information.

In this technical solution, a generation manner of the relative position information is specifically defined, and specifically, based on the above, the size of the correlation coefficient has a correlation with the distance between different indoor units, so that a mapping relationship between the correlation coefficient and the distance value between different indoor units may be pre-constructed, so that after the correlation coefficient is obtained, the distance value between different indoor units may be determined according to the mapping relationship.

Specifically, in the present application, a quantization relationship, that is, a mapping relationship between a correlation coefficient and a distance value between different indoor units is preset, so that after the quantization value is determined, coordinate information corresponding to an indoor unit corresponding to the quantization value can be determined according to a positioning point and the quantization value of any indoor unit in the classification group, so as to know a relative position relationship between any indoor unit and other indoor units according to the positioning point and the coordinate information.

In one of the technical solutions, the positioning point can be understood as a coordinate origin.

In any of the above technical solutions, in the preset quantization relationship, the correlation coefficient and the quantization value are negatively correlated.

In any of the above technical solutions, the relative position information is a topological graph.

In the technical scheme, the expression form of the relative position information is specifically limited, and the relative position information is displayed in a topological graph form by limiting, so that a user can know the position distribution condition among different indoor units intuitively, and therefore, the different indoor units can be controlled more directly to ensure the control effect.

In any of the above technical solutions, before obtaining the return air temperature information of each indoor unit, the method further includes: controlling a plurality of indoor units to operate in a cooling mode, a heating mode or a dehumidifying mode; or controlling one of the indoor units to operate in a cooling mode, a heating mode or a dehumidifying mode, and controlling the other indoor units to operate in an air supply mode.

In the technical scheme, the operation states of the indoor units are limited, so that the relative position information between different indoor units can be rapidly determined.

Specifically, the plurality of indoor units may be controlled to operate in a cooling mode, a heating mode, and a wet mode at the same time, so that the plurality of indoor units simultaneously adjust the temperature of the environment where the indoor units are located, and the determination of the relative position information between the different indoor units is realized under the condition of realizing rapid cooling, heating, or dehumidification.

In one of the technical solutions, before the return air temperature information of each indoor unit is obtained, each indoor unit of the plurality of indoor units may be further controlled to sequentially operate according to a target operation mode, and the other indoor units operate in an air supply mode, where the target operation mode may be any one of a heating mode, a cooling mode, and a dehumidification mode.

In any of the above technical solutions, the method further includes: and acquiring absolute position information of any indoor unit, and determining actual position information according to the absolute position information and the relative position information.

In the technical scheme, a process of converting relative position information into actual position information after obtaining the relative position information of a plurality of indoor units is specifically limited, specifically, the actual position information can be determined according to the absolute position information by obtaining the absolute position information of any one indoor unit, and in the process, the actual position information is converted so that a user can more intuitively determine the positions of different indoor units and the distribution conditions among the different indoor units, and the actual position information is used for controlling the different indoor units according to the actual position information.

In any of the above technical solutions, the method further includes: acquiring a return air temperature difference sequence of each indoor unit; determining an evaluation index according to the average value and the variance of the return air temperature difference sequence between every two indoor units; and determining the preset number of indoor units around each indoor unit according to the evaluation indexes.

In one technical scheme, based on the obtained position distribution situation among different indoor units, the relative position information can be corrected, so that the reliability of obtaining the relative position information is improved, and the accuracy of controlling among different indoor units according to the relative position information is improved.

In any of the above technical solutions, the evaluation index is an absolute value of a product of an average value and a variance of the return air temperature difference sequence.

According to a second aspect of the present invention, there is provided a position determining apparatus for a plurality of indoor units, comprising: the acquisition module is used for acquiring return air temperature information of each indoor unit; the determining module is used for determining a first correlation coefficient between every two indoor units according to the return air temperature information; the classification module is used for classifying the indoor units according to the first correlation coefficient and a preset threshold value to obtain a set number of classification groups; and the generating module is used for generating relative position information in each classification group by taking the first indoor unit as a positioning point according to the first correlation coefficient.

The technical scheme of the application provides a position determination device, a plurality of indoor units using the position determination device can realize detection of relative positions among the indoor units, and in the process, maintenance personnel do not need to manually maintain the relative position relationships among the indoor units, so that the maintenance difficulty of the relative position relationships among the indoor units is reduced, and reduction of time cost and labor cost required by maintenance is facilitated.

In one technical scheme, the determining module is specifically configured to determine a covariance of return air temperature information corresponding to every two indoor units; determining a variance value of return air temperature information corresponding to each indoor unit; a first correlation coefficient is determined based on the variance and the covariance.

In one technical scheme, the classification module is specifically configured to classify two indoor units with the largest first correlation coefficient into one class; the indoor units which are classified into one category are used as first indoor units, second correlation coefficients between the first indoor units and the rest outdoor units except the first indoor units in the indoor units are respectively determined, and the two indoor units with the largest second correlation number are classified into one category until the indoor units are classified into one category; setting a correlation coefficient threshold value for the second correlation number according to the set number of the classification groups; and dividing the indoor units according to the second correlation coefficient and the correlation coefficient threshold value to obtain a set number of classification groups.

In one technical scheme, the classification module is further used for acquiring space partition information for installing a plurality of indoor units; and determining the set number of the classification groups according to the space partition information.

In one technical scheme, the generating module is configured to determine a quantization value corresponding to the first correlation coefficient according to a preset quantization relationship; obtaining coordinate information of the indoor units except any indoor unit according to the quantized values and the positioning points; and generating relative position information according to the positioning point and the coordinate information.

In one embodiment, in the predetermined quantization relationship, the correlation coefficient and the quantization value are negatively correlated.

In one technical solution, the relative position information is a topological graph.

In one technical scheme, the obtaining module is further used for controlling the plurality of indoor units to operate in a cooling mode, a heating mode or a dehumidifying mode; or controlling one of the indoor units to operate in a cooling mode, a heating mode or a dehumidifying mode, and controlling the other indoor units to operate in an air supply mode.

In one technical solution, the generating module is further configured to obtain absolute position information of any indoor unit, and determine actual position information according to the absolute position information and the relative position information.

In one technical scheme, the generating module is further configured to obtain a return air temperature difference sequence of each indoor unit; determining an evaluation index according to the average value and the variance of the return air temperature difference sequence between every two indoor units; and determining the preset number of indoor units around each indoor unit according to the evaluation indexes.

In one technical scheme, the evaluation index is the absolute value of the product of the average value and the variance of the return air temperature difference sequence.

According to a third aspect of the present invention, the present application provides an air conditioning system, comprising: a plurality of indoor units; control means, in communication with the plurality of indoor units, for performing the steps of the position determining method according to any one of the first aspect.

The technical solution of the present application proposes an air conditioning system comprising a control device and a plurality of indoor units, wherein the control device performs the steps of the position determining method according to any one of the first aspect,

therefore, the air conditioning system has all the beneficial technical effects of the position determining method of any one of the above,

here, the description is omitted.

In any of the above technical solutions, the method further includes: and the outdoor unit is connected with the indoor unit.

According to a fourth aspect of the present invention, a readable storage medium is proposed, on which a program or instructions are stored, which program or instructions, when executed by a processor, carry out the steps of the position determination method according to any one of the first aspect.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 illustrates a distribution of a plurality of indoor units in an indoor installation environment in a related art;

FIG. 2 shows a schematic flow diagram of a position determination method according to an embodiment of the invention;

FIG. 3 shows a flow diagram of a first correlation coefficient determination scheme according to one embodiment of the invention;

FIG. 4 is a flow diagram illustrating a process for determining a set number of classification groups according to one embodiment of the invention;

FIG. 5 is a schematic diagram illustrating an actual usage scenario in one embodiment of the present invention;

FIG. 6 is a diagram illustrating a correlation coefficient threshold in one embodiment of the present invention;

FIG. 7 shows a schematic flow diagram for generating relative position information according to one embodiment of the invention;

fig. 8 is a diagram illustrating quantized values of relative distances between different indoor units according to an embodiment of the present invention;

fig. 9 is a view illustrating relative position information between indoor units according to an embodiment of the present invention;

FIG. 10 is a schematic diagram showing the form of relative position information in one embodiment of the present invention;

FIG. 11 illustrates one of the forms of a topology graph in accordance with an embodiment of the present invention;

FIG. 12 is a diagram illustrating representations of pre-set quantitative relationships in accordance with one embodiment of the present invention;

FIG. 13 shows a schematic block diagram of position determination in accordance with one embodiment of the present invention.

Detailed Description

So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Example one

As shown in fig. 2, according to an embodiment of the present invention, the present invention provides a position determination method, including:

step 102, collecting temperature information of an air return port of each indoor unit to obtain air return temperature information;

104, calculating first correlation coefficients of every two indoor units according to the collected return air temperature information;

step 106, classifying the indoor units by taking the first correlation coefficient as a reference to obtain a classification group with the group number as a set number;

and 108, in each classification group, selecting any indoor unit as an anchor point, and generating relative position information by taking the calculated first correlation coefficient as a reference.

The embodiment of the application provides a position determining method, and the method can be operated to detect the relative positions of a plurality of indoor units, and in the process, maintenance personnel do not need to manually maintain the relative position relationships of the indoor units, so that the maintenance difficulty of the relative position relationships of the indoor units is reduced, and the time cost and the labor cost required by maintenance are reduced.

The embodiment of the application is realized based on the following principle, specifically, the installation positions of different indoor units are different, and the different indoor units have a spacing therebetween, and the spacing may be different due to the different installation positions. Due to the existence of the space, the influence among different indoor units is inconsistent, for example, when one indoor unit is in a first sealed environment, the other indoor unit is in a second sealed environment, wherein, no heat transfer exists between the first sealed environment and the second sealed environment, and in this case, the influence among the indoor units in the different sealed environments is not consistent. When a plurality of indoor units exist in one sealed environment, different indoor units have influence.

The embodiment of the application just collects the influences, and utilizes the correlation between the influences and the distances between different indoor units to realize the estimation of the relative position information between the different indoor units.

In any of the above embodiments, the return air temperature information of the indoor unit may be discrete temperature values, that is, the return air temperature information detected by the indoor unit every fixed detection time is represented in the form of a temperature sequence.

In one embodiment, it can be understood that the return air temperature information is the temperature information at the position of the return air inlet of the indoor unit.

In one embodiment, a temperature sensor can be arranged at the return air inlet of the indoor unit, and the temperature sensor is used for acquiring temperature information at the position of the return air inlet.

Example two

In this embodiment, a determination scheme of the first correlation coefficient is specifically defined, specifically, as shown in fig. 3, including:

step 202, selecting any two indoor units from the plurality of indoor units, and calculating the covariance of return air temperature information corresponding to the selected indoor unit;

step 204, determining the variance value of the return air temperature information corresponding to the selected indoor unit;

and step 206, calculating the variance and the covariance to obtain a first correlation coefficient between the selected indoor units.

In this embodiment, a determination scheme of the first correlation coefficient is specifically defined, and specifically, a calculation formula of the first correlation coefficient is as follows:

EXAMPLE III

In this embodiment, a determination process of a set number of classification groups is specifically defined, specifically, as shown in fig. 4, including:

step 302, sorting the first correlation coefficients, selecting two indoor units corresponding to the maximum first correlation coefficients, and dividing the indoor units into a class;

step 304, based on that the indoor units are not classified into one type, taking the indoor units classified into one type as first indoor units, respectively determining second correlation coefficients between the first indoor units and the rest outdoor units except the first indoor units in the indoor units, sorting the second correlation numbers, selecting two indoor units corresponding to the largest second correlation numbers, and classifying the two indoor units into one type until all the indoor units are classified into one type;

step 306, acquiring the set number of the classification groups, and selecting a correlation coefficient threshold value for the second correlation coefficient according to the set number;

and 308, classifying and dividing the indoor units according to the second correlation coefficient and the correlation coefficient threshold value to obtain a set number of classification groups.

In this embodiment, the distances between the different indoor units may be represented according to the first correlation coefficient, so after the first correlation coefficient between every two indoor units in the multiple indoor units is determined, the obtained first correlation coefficients may be arranged in size, and then the two indoor units with the largest correlation coefficients are determined.

Considering that the number of the indoor units is more than two, and may be three or more, that is, after the two indoor units corresponding to the largest arranged first correlation coefficients are classified into one class, there still exist some indoor units that are not classified, in this case, the indoor units that have been classified into one class are taken as a whole, that is, the first indoor unit in the present application, and the second correlation coefficient between the first indoor unit and the indoor units that are not classified is determined, so that the second correlation coefficient is used to aggregate the plurality of indoor units, and finally the plurality of indoor units are aggregated into one class.

Specifically, as shown in fig. 5, for example, there are 9 indoor units, which can be divided into 4 zones from the viewpoint of the building plane partition: office area, meeting area 1, meeting area 2, corridor area.

The indoor units comprise a first indoor unit, a second indoor unit, a third indoor unit, a fourth indoor unit, a fifth indoor unit, a sixth indoor unit, a seventh indoor unit, an eighth indoor unit and a ninth indoor unit, wherein the first indoor unit is represented by 1#, the second indoor unit is represented by 2#, the third indoor unit is represented by 3#, the fourth indoor unit is represented by 4#, the fifth indoor unit is represented by 5#, the sixth indoor unit is represented by 6#, the seventh indoor unit is represented by 7#, the eighth indoor unit is represented by 8#, and the ninth indoor unit is represented by 9#, and then the calculation results of the first correlation coefficients between every two indoor units are shown in table 1.

TABLE 1

As can be seen from table 1, the two indoor units corresponding to the largest correlation coefficient among the first correlation coefficients are 3# and 4#, so that the 3# and 4# are classified into one group, and the second correlation coefficient is calculated with the other indoor units by using the 3# and 4# as one indoor unit, thereby obtaining table 2.

TABLE 2

As can be seen from table 2, the number of second correlations between 3# and 6# is the largest, and in this case, 3# and 6# are considered as one type, and the above procedure was repeated to obtain table 3.

TABLE 3

		1#	2#	Type	1	5#	7#	8#	9￥
										1#	Correlation coefficient		0	0.9356	0.884475	0.8787	0.6604	0.3823	0.7991
2#	Correlation coefficient	0.9356	0	0.9187	0.8722	0.7134	0.4081	0.8497
									Type 1	Correlation coefficient	0.884475	0.9187	0	0.942675	0.816175	0.4023	0.863025
5#	Correlation coefficient	0.8787	0.8722	0.942675	0	0.7431	0.3517	0.814
									7#	Correlation coefficient	0.6604	0.7134	0.816175	0.7431	0	0.4667	0.7488
8#	Correlation coefficient	0.3823	0.4081	0.4023	0.3517	0.4667	0	0.4821
									9#	Correlation coefficient	0.7991	0.8497	0.863025	0.814	0.7488	0.4821	0

As can be seen from table 3, the correlation coefficients of

types

1 and 5# are the largest, so the

types

1 and 5# are divided into one group, and the above steps are repeated to obtain table 4.

TABLE 4

		1#	2#	Type	1	7#	8#	9#
											Correlation coefficient	Correlation coefficient	Correlation coefficient	Correlation coefficient	Correlation coefficient	Correlation coefficient
1#	Correlation coefficient		0	0.9356	0.8815875	0.6604	0.3823	0.7991
									2#	Correlation coefficient	0.9356	0	0.89545	0.7134	0.4081	0.8497
Type 1	Correlation coefficient	0.884475	0.9187	0	0.816175	0.4023	0.863025
								7#	Correlation coefficient	0.6604	0.7134	0.7796375	0	0.4667	0.7488
8#	Correlation coefficient	0.3823	0.4081	0.377	0.4667	0	0.4821
								9#	Correlation coefficient	0.7991	0.8497	0.8385125	0.7488	0.4821	0
	Maximum value	0.9356	0.9356	0.89545	0.816175	0.4821	0.863025

As can be seen from table 4, since the correlation coefficients of # 1 and # 2 are the largest, the above steps are repeated by dividing # 1 and # 2 into one class, and table 5 is obtained.

TABLE 5

The above procedure was repeated to obtain table 6.

TABLE 6

		Type 1	7#	8#	9#
								Correlation coefficient	Correlation coefficient	Correlation coefficient	Correlation coefficient
Type
	1	Correlation coefficient	0	0.73326875	0.3861	0.83145625
7#							Correlation coefficient	0.733269	0	0.4667	0.7488
	8#	Correlation coefficient	0.3861	0.4667	0	0.4821
9#							Correlation coefficient	0.831456	0.7488	0.4821	0
		Maximum value	0.831456	0.7488	0.4821	0.83145625

In one embodiment, the second correlation number may be an average value of the first correlation coefficient between the indoor units classified into one class and the first indoor unit.

Specifically, as shown in fig. 6, the correlation coefficient threshold, i.e., the set value of the correlation coefficient, is selected from 0.8314 to 0.9016 based on the above table.

In one embodiment, a correlation coefficient threshold is set for the second correlation coefficient according to the set number of the classification groups, and it can be understood that the correlation coefficient threshold is reasonably selected according to the set number, so as to divide the plurality of indoor units into the classification groups of the set number.

In one embodiment, the method further comprises the following steps: acquiring space partition information provided with a plurality of indoor units; and determining the set number according to the space partition information.

In the embodiment, the set number is determined according to the acquired space partition information, so that the set number can be reasonably set according to the space for installing the indoor units, in the process, the influence on the selection of the preset threshold value due to unreasonable setting of the set number is reduced, the accuracy of the relative position information of the indoor units is ensured, and finally the maintenance difficulty of the relative position information by maintenance personnel is reduced, such as the manpower operation cost and the time cost are reduced.

In any of the above embodiments, the space partition information may be determined according to information collected by an installer when installing the plurality of indoor units.

In any of the above embodiments, the spatial distribution information may be room division information or office area division.

Example four

In this embodiment, a specific process of generating the relative position information is specifically defined, and as shown in fig. 7, the specific process specifically includes:

step 502, obtaining a preset quantization relationship so as to determine a quantization value corresponding to the first correlation coefficient according to the preset quantization relationship;

step 504, obtaining coordinate information of the indoor units except any selected indoor unit in the classification group according to the quantized values and the positioning points;

and step 506, generating relative position information according to the positioning point and the coordinate information.

In this embodiment, a generation manner of the relative position information is specifically defined, and specifically, based on the above, the size of the correlation coefficient has a correlation with the distance between the different indoor units, and therefore, a mapping relationship between the correlation coefficient and the distance value between the different indoor units may be previously constructed, so that after the correlation coefficient is obtained, the distance value between the different indoor units may be determined according to the mapping relationship.

In one of the embodiments, the anchor point may be understood as the origin of coordinates.

In one embodiment, the correlation coefficient and the quantization value are negatively correlated in the preset quantization relationship.

In one embodiment, the correspondence between the correlation coefficient and the quantization value is shown in table 7.

TABLE 7

In one embodiment, as shown in fig. 8, a diagram of quantized values of relative distances between different indoor units is shown.

In one embodiment, the relative position information may be represented in the form of table 8.

TABLE 8

Where x and y represent coordinates on coordinate axes perpendicular to each other.

As shown in fig. 9, the relative position information between the indoor units can be obtained based on table 8.

In one embodiment, fig. 10 shows one of the schematic forms of the relative position information.

In one embodiment, the relative position information is a topological map.

In this embodiment, the expression form of the relative position information is specifically defined, and the relative position information is displayed in the form of a topological graph by defining, so that a user can intuitively perceive the position distribution situation among different indoor units, and therefore, the control of different indoor units can be performed more directly to ensure the control effect.

In one embodiment, FIG. 11 shows one of the forms of a topological graph.

In one embodiment, fig. 12 shows a schematic diagram of a representation of a preset quantitative relationship.

In one embodiment, the method further comprises the following steps: acquiring a return air temperature difference sequence of each indoor unit; determining an evaluation index according to the average value and the variance of the return air temperature difference sequence between every two indoor units; and determining the preset number of indoor units around each indoor unit according to the evaluation indexes.

Specifically, for the indoor environment, the closer the distance between two indoor units with the same operation condition is, the more obvious the influence degree of the return air state is, the overall fluctuation of the return air temperature tends to the same curve, and the smaller the average value of the return air temperature difference sequence is. However, considering that there may be operating equipment in an independent space, the curve of the return air temperature may be similar to any indoor unit in the same operating state, and the mean value of the return air temperature difference obtained in this case is very small and is not meaningful for judgment. But in this case the return air temperature difference sequence will fluctuate more because they are less correlated in nature and less consistent in temperature trend, thus increasing the variance calculation of the return air temperature difference sequence, which in this case will have a larger variance.

The method comprises the steps of calculating the average mean and the variance square _ d of the return air temperature difference sequence of each internal machine, constructing an evaluation index ms (mean multiplied by square _ d) based on the reason, measuring the real distance between devices by using the index, and obtaining more accurate position distribution between the internal machines on the basis of a classification result.

In one embodiment, the average value and variance of the difference between the indoor unit return air temperatures are calculated based on the collected data, and the data shown in table 9 is obtained as an evaluation index. On the basis of the data in the table 9, x sets with the most similar evaluation indexes of each internal machine are searched, and the adjacent internal machine groups with the number of x of each internal machine are obtained.

TABLE 9

reflect	Ms×100	reflect	ms×100
				5#_4#	0.0598	8#_3#	1.7914
9#_6#	0.0607	3#_1#	1.9423
				4#_3#	0.0855	7#_4#	2.1904
3#_2#	0.1162	7#_5#	2.6424
				6#_4#	0.1462	4#_1#	2.7475
5#_3#	0.1857	7#_3#	3.6615
				4#_2#	0.2374	5#_1#	3.8646
6#_5#	0.2740	8#_4#	4.0014
				6#_3#	0.3702	6#_1#	4.6805
9#_4#	0.6215	7#_2#	4.8638
				7#_6#	0.7590	8#_2#	4.8690
5#_2#	0.7971	8#_5#	5.8419
				9#_5#	0.8551	9#_1#	6.0566
6#_2#	0.9902	9#_8#	12.2646
				9#_7#	1.0892	8#_6#	12.5563
9#_3#	1.1470	7#_1#	15.5748
				9#_2#	1.3748	8#_7#	18.5582
2#_1#	1.4805	8#_1#	48.3287

For example, if x is 3, table 10 can be obtained.

Watch 10

Indoor machine numbering	Near toIndoor machine numbering
		1#	[2#,3#,4#]
2#	[3#,4#,5#]
		3#	[4#,2#,5#]
4#	[5#,3#,6#]
		5#	[4#,3#,6#]
6#	[9#,4#,5#]
		7#	[6#,9#,4#]
8#	[3#,4#,2#]
		9#	[6#,4#,5#]

The distribution of the indoor units can be obtained based on the table 10, and the position distribution of the indoor units can be obtained based on the distribution.

In one embodiment, based on the position distribution among different indoor units obtained from table 10, the relative position information may be corrected, so as to improve the reliability of obtaining the relative position information, and further improve the accuracy of controlling among different indoor units according to the relative position information.

In any of the above embodiments, the evaluation index is the absolute value of the product of the mean and variance of the return air temperature difference sequence.

In one embodiment, before obtaining the return air temperature information of each indoor unit, the method further includes: controlling a plurality of indoor units to operate in a cooling mode, a heating mode or a dehumidifying mode; or controlling one of the indoor units to operate in a cooling mode, a heating mode or a dehumidifying mode, and controlling the other indoor units to operate in an air supply mode.

In this embodiment, by defining the operation states of the plurality of indoor units, it is possible to quickly determine the relative position information between the different indoor units.

In one embodiment, before the return air temperature information of each indoor unit is obtained, each indoor unit in the multiple indoor units may be further controlled to sequentially operate according to a target operation mode, and the other indoor units operate in an air supply mode, where the target operation mode may be any one of a heating mode, a cooling mode, and a dehumidification mode.

EXAMPLE five

In one embodiment, the method further comprises the following steps: and acquiring absolute position information of any indoor unit, and determining actual position information according to the absolute position information and the relative position information.

In this embodiment, a process of converting the relative position information into actual position information after obtaining the relative position information of the plurality of indoor units is specifically defined, specifically, the absolute position information of any one indoor unit is obtained, so that the actual position information can be determined according to the absolute position information, and in this process, the absolute position information is converted, so that a user can more intuitively determine the positions of different indoor units and the distribution conditions among the different indoor units, so as to control the different indoor units according to the actual position information.

EXAMPLE six

In an embodiment of the present invention, as shown in fig. 13, the present invention provides a position determining apparatus 600 for a plurality of indoor units, including: an obtaining module 602, configured to obtain return air temperature information of each indoor unit; a determining module 604, configured to determine a first correlation coefficient between every two indoor units according to the return air temperature information; the classification module 606 is configured to classify the multiple indoor units according to the first correlation coefficient and a preset threshold, so as to obtain a set number of classification groups; the generating module 608 is configured to generate the relative position information according to the first correlation coefficient by using the first indoor unit as an anchor point in each classification group.

The embodiment of the application provides a position determining device 600, and a plurality of indoor units applying the position determining device 600 can detect relative positions among the indoor units, and in the process, maintenance personnel do not need to manually maintain the relative position relationships among the indoor units, so that the maintenance difficulty of the relative position relationships among the indoor units is reduced, and time cost and labor cost required by maintenance are reduced.

EXAMPLE seven

In one embodiment, an embodiment of the present application provides an air conditioning system, including: a plurality of indoor units; and a control device, in communication with the plurality of indoor units, for performing the steps of the position determining method as described in any one of the above.

In this embodiment, an embodiment of the present application proposes an air conditioning system including a control device and a plurality of indoor units, wherein the control device performs the steps of the position determining method according to any one of the above-mentioned embodiments, and therefore, the air conditioning system has all the advantageous technical effects of the position determining method according to any one of the above-mentioned embodiments.

For example: the method can realize the detection of the relative positions among the indoor units, and in the process, the relative position relation among the indoor units is not required to be maintained manually by maintenance personnel, so the maintenance difficulty of the relative position relation among the indoor units is reduced, the time cost and the labor cost required by maintenance are reduced, and meanwhile, the relative position information determined by adopting the position determining method is obtained based on the detection result, so the obtained relative position information has better reliability, and other technical effects are not repeated.

In one embodiment, the air conditioning system further comprises: and the outdoor unit is connected with the indoor unit.

In this embodiment, refrigerant interaction is performed between the outdoor unit and the indoor unit, thereby achieving heat exchange.

Example eight

In one embodiment, a readable storage medium is proposed, on which a program or instructions are stored, which when executed by a processor implement the steps of the position determination method as defined in any one of the above.

When executed, the program or the instructions stored on the readable storage medium provided by the present invention can implement the steps of any one of the above location determining methods, and therefore, the readable storage medium has all the beneficial technical effects of any one of the above location determining methods, and details are not described herein again.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A position determining method for a plurality of indoor units, comprising:

acquiring return air temperature information of each indoor unit;

determining a first correlation coefficient between every two indoor units according to the return air temperature information;

classifying the indoor units according to the first correlation coefficient to obtain a set number of classification groups;

and in each classification group, generating relative position information by taking any indoor unit as an anchor point according to the first correlation coefficient.

2. The method according to claim 1, wherein the determining a first correlation coefficient between every two indoor units according to the return air temperature information specifically includes:

determining the covariance of corresponding return air temperature information between every two indoor units;

determining a variance value of return air temperature information corresponding to each indoor unit;

determining the first correlation coefficient according to the variance and the covariance.

3. The method of claim 1, wherein the classifying the indoor units according to the first correlation coefficient to obtain a set number of classification groups comprises:

dividing the two indoor units with the maximum first correlation coefficient into one type;

the indoor units which are classified into one category are used as first indoor units, second correlation coefficients between the first indoor units and the rest outdoor units except the first indoor units in the indoor units are respectively determined, and the two indoor units with the largest second correlation coefficient are classified into one category until the indoor units are classified into one category;

setting a correlation coefficient threshold value for the second correlation coefficient according to the set number of the classification groups;

and dividing the indoor units according to the second correlation coefficient and the correlation coefficient threshold value to obtain a set number of classification groups.

4. The position determination method according to claim 3, characterized by further comprising:

acquiring space partition information for installing a plurality of indoor units;

and determining the set number of the classification groups according to the space partition information.

5. The method according to any one of claims 1 to 4, wherein generating relative position information according to the first correlation coefficient with any indoor unit as an anchor point specifically includes:

determining a quantization value corresponding to the first correlation coefficient according to a preset quantization relation;

obtaining coordinate information of the indoor units except any one indoor unit according to the quantized values and the positioning points;

and generating relative position information according to the positioning point and the coordinate information.

6. The position determination method according to claim 5, wherein the correlation coefficient is negatively correlated with the quantized value in the preset quantization relationship.

7. The position determination method according to any one of claims 1 to 4, characterized in that the relative position information is a topological graph.

8. The position determining method according to any one of claims 1 to 4, wherein before acquiring the return air temperature information of each indoor unit, the method further comprises:

controlling a plurality of indoor units to operate in a cooling mode, a heating mode or a dehumidifying mode; or

And controlling one of the indoor units to operate in a cooling mode, a heating mode or a dehumidifying mode, and controlling other indoor units in the indoor units to operate in an air supply mode.

9. The position determination method according to any one of claims 1 to 4, characterized by further comprising:

and acquiring absolute position information of any indoor unit, and determining actual position information according to the absolute position information and the relative position information.

10. The position determination method according to any one of claims 1 to 4, characterized by further comprising:

acquiring a return air temperature difference sequence of each indoor unit;

determining an evaluation index according to the average value and the variance of the return air temperature difference sequence between every two indoor units;

and determining a preset number of indoor units around each indoor unit according to the evaluation indexes.

11. The position determination method according to claim 10,

and the evaluation index is the absolute value of the product of the average value and the variance of the return air temperature difference value sequence.

12. A position determining apparatus for a plurality of indoor units, comprising:

the acquisition module is used for acquiring return air temperature information of each indoor unit;

the determining module is used for determining a first correlation coefficient between every two indoor units according to the return air temperature information;

the classification module is used for classifying the indoor units according to the first correlation coefficient and a preset threshold value to obtain a set number of classification groups;

and the generating module is used for generating relative position information in each classification group by taking a first indoor unit as a positioning point according to the first correlation coefficient.

13. An air conditioning system, comprising:

a plurality of indoor units;

control means, in communication with a plurality of said indoor units, for carrying out the steps of the position determination method according to any one of claims 1 to 11.

14. The air conditioning system of claim 13, further comprising:

and the outdoor unit is connected with the indoor unit.

15. A readable storage medium on which a program or instructions are stored, which program or instructions, when executed by a processor, carry out the steps of the position determination method according to any one of claims 1 to 11.