EP4300002A1 - Procédé et appareil de détermination de position et système de climatisation et support d'enregistrement lisible - Google Patents

Procédé et appareil de détermination de position et système de climatisation et support d'enregistrement lisible Download PDF

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Publication number
EP4300002A1
EP4300002A1 EP21946778.4A EP21946778A EP4300002A1 EP 4300002 A1 EP4300002 A1 EP 4300002A1 EP 21946778 A EP21946778 A EP 21946778A EP 4300002 A1 EP4300002 A1 EP 4300002A1
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EP
European Patent Office
Prior art keywords
indoor units
correlation coefficient
return air
indoor
air temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21946778.4A
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German (de)
English (en)
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EP4300002A4 (fr
Inventor
Bin Li
Ruixian YANG
Chunyuan ZHENG
Yunxiao Ding
Xiaoqiang ZHAI
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Shanghai Jiaotong University
GD Midea Heating and Ventilating Equipment Co Ltd
Original Assignee
Shanghai Jiaotong University
GD Midea Heating and Ventilating Equipment Co Ltd
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Application filed by Shanghai Jiaotong University, GD Midea Heating and Ventilating Equipment Co Ltd filed Critical Shanghai Jiaotong University
Publication of EP4300002A1 publication Critical patent/EP4300002A1/fr
Publication of EP4300002A4 publication Critical patent/EP4300002A4/fr
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F24F2120/12—Position of occupants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/32—Details or features not otherwise provided for preventing human errors during the installation, use or maintenance, e.g. goofy proof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/54—Heating and cooling, simultaneously or alternatively

Definitions

  • the present invention relates to the field of control, and in particular to a method and device for position determination, an air conditioning system, and a readable storage medium.
  • a plurality of indoor units are under linkage control when being mounted indoors. Relative positions of the indoor units must be acquired before linkage control.
  • the present invention is intended to at least solve one problem in the prior art or the related art.
  • a device for position determination is provided in a second aspect of the present invention.
  • An air conditioning system is provided in a third aspect of the present invention.
  • a readable storage medium is provided in a fourth aspect of the present invention.
  • the present invention provides a method for position determination.
  • the method comprises: acquiring a return air temperature information of each indoor unit; determining a first correlation coefficient between every two indoor units based on the return air temperature information; classifying a plurality of indoor units based on the first correlation coefficient to obtain a set number of classified groups; and generating a relative position information in each classified group and using any one of the air conditioning indoor units as a locating point based on the first correlation coefficient.
  • a method for position determination is provided according to the embodiment of the present invention.
  • this method for position determination By running this method for position determination, relative positions of the plurality of indoor units can be measured. In this process, maintenance personnel are not required to manually maintain a relative position relation of the plurality of indoor units. Therefore, the maintenance difficulty of the relative position relation of the plurality of indoor units is reduced, and a time cost and a labor cost required for maintenance are reduced accordingly.
  • the relative position information determined through the above method for position determination of the present invention is acquired based on a measurement result, and is therefore more reliable.
  • the embodiment of the present invention is implemented based on the principles as follows: different indoor units are mounted at different positions, and a distance is formed between different indoor units and varies with different mounting positions. In the presence of the distance, the influence between different indoor units is inconsistent. In some embodiment, when one indoor unit is positioned in a first sealed environment and another indoor unit is positioned in a second sealed environment, no heat is transferred between the first sealed environment and the second sealed environment, and therefore no influence is generated between the indoor units in different sealed environments. However, when there are a plurality of indoor units in a sealed environment, influence is generated between different indoor units.
  • the influence is collected, and the relative position information of different indoor units is estimated exactly through the collected influence and a correlation between the influence and the distance between different indoor units.
  • the indoor unit is an apparatus configured to adjust a temperature in a sealed environment and the indoor units influencing each other share a sealed environment
  • the above influence can be extracted by collecting the return air temperature information of the indoor unit.
  • return air temperature information of the plurality of indoor units is acquired through traversing. The closer the two indoor units are, the greater the influence between these two indoor units, and the greater the correlation coefficient between every two of the plurality of indoor units determined based on the acquired return air temperature information. Therefore, the distance between different indoor units can be represented through the correlation coefficient.
  • the correlation coefficient between different indoor units can represent a distance condition between different indoor units
  • any one of the indoor units in the classified group obtained through division can be taken as the locating point to obtain a relative position relation of the other indoor units in this classified group.
  • a relative distribution condition of all the indoor units that is, the relative position information in the present invention, can be obtained.
  • the return air temperature information of the indoor unit can be a discrete temperature, that is, return air temperature information measured by the indoor unit at every fixed measurement time interval is expressed as a temperature sequence.
  • the return air temperature information is temperature information at a return air inlet of the indoor unit.
  • a temperature sensor can be arranged at the return air inlet of the indoor unit to acquire the temperature information at the return air inlet.
  • the method for position determination claimed by the present invention further has the following additional distinguishable features, and comprises:
  • the step of determining the first correlation coefficient between every two indoor units based on the return air temperature information comprises: determining a covariance of return air temperature information corresponding to every two indoor units; determining a variance of the return air temperature information corresponding to each indoor unit; and determining the first correlation coefficient based on the variance and the covariance.
  • a determination solution for the first correlation coefficient is defined.
  • the step of classifying the plurality of indoor units based on the first correlation coefficient to obtain a set number of classified groups comprises: dividing two indoor units with the largest first correlation coefficient into one class; taking the indoor units divided into one class as first indoor units, respectively determining second correlation coefficients between the first indoor units and remaining outdoor units of the plurality of indoor units other than the first indoor units, and dividing two indoor units with the largest second correlation coefficient into one class until the plurality of indoor units are divided into one class; setting a correlation coefficient threshold for the second correlation coefficient based on the set number of the classified groups; and dividing the plurality of indoor units based on the second correlation coefficient and the correlation coefficient threshold to obtain a set number of classified groups.
  • the distance between different indoor units can be represented through the first correlation coefficient. Therefore, after the first correlation coefficients between every two of the plurality of indoor units are determined, the first correlation coefficients obtained can be ranked, and then the two indoor units with the largest correlation coefficient are determined. It can be seen from the above that the first correlation coefficient can be configured to represent the distance between different indoor units. Therefore, the two indoor units corresponding to the largest first correlation coefficient are two indoor units closest to each other.
  • the set number is acquired. Since the set number is configured to represent the number of classified groups into which the plurality of indoor units are divided, the correlation coefficient threshold can be set based on the set number, and the indoor units in the classified group are divided based on the set correlation coefficient threshold, and finally a set number of classified groups are obtained.
  • the method further comprises: acquiring a space partition information for the installed plurality of indoor units; and determining the set number of the classified groups based on the space partition information.
  • the set number is determined based on the acquired space partition information, and therefore can be rationally set based on the space for mounting the indoor units.
  • the influence on selection of a preset threshold caused by irrational setting of the set number is reduced, the accuracy of the relative position information of the plurality of indoor units is ensured, and finally the maintenance difficulty of the relative position information for maintenance personnel is reduced, in some embodiment, a human resource operation cost and a time cost are reduced.
  • the space partition information can be determined based on information collected by mounting personnel in a process of mounting the plurality of indoor units.
  • the space partition information can be room division information or office area division information.
  • the step of generating relative position information and using any one of the air conditioning indoor units as a locating point based on the first correlation coefficient comprises: determining a quantitative value corresponding to the first correlation coefficient based on a preset quantitative relation; acquiring coordinate information of an indoor unit except for any one of the indoor units based on the quantitative value and the locating point; and generating the relative position information based on the locating point and the coordinate information.
  • a generation manner of the relative position information is defined. It can be seen from the above that the correlation coefficient is correlated with the distance between different indoor units. Therefore, a mapping relation between the correlation coefficient and the distance between different indoor units can be pre-constructed, and the distance between different indoor units can be determined based on the mapping relation after the correlation coefficient is acquired.
  • the preset quantitative relation is the mapping relation between the correlation coefficient and the distance between different indoor units. Therefore, coordinate information corresponding to the indoor unit corresponding to the quantitative value can be determined based on a locating point of any one of the indoor units in this classified group and the quantitative value after the quantitative value is determined. Accordingly, a relative position relation between any one of the indoor units and the other indoor units is obtained based on the locating point and the coordinate information.
  • the locating point can be interpreted as a coordinate origin.
  • the correlation coefficient is negatively correlated with the quantitative value.
  • the relative position information is a topological graph.
  • the expression form of the relative position information is defined.
  • the method before the acquiring return air temperature information of each indoor unit, the method further comprises: controlling the plurality of indoor units to run in a refrigeration mode, a heating mode, or a dehumidification mode; and alternatively, controlling one of the plurality of indoor units to run in a refrigeration mode, a heating mode, or a dehumidification mode, and controlling the others of the plurality of indoor units to run in an air supply mode.
  • the relative position information of different indoor units can be rapidly determined by defining running states of the plurality of indoor units.
  • the plurality of indoor units can be controlled to simultaneously run in the refrigeration mode, the heating mode, or the dehumidification mode, to simultaneously adjust a temperature of an environment in which the indoor units are positioned, and determine the relative position information of different indoor units while rapid refrigeration, heating, or dehumidification is realized.
  • the plurality of indoor units before the acquiring return air temperature information of each indoor unit, can further be controlled to run in a target running mode in sequence, and the other indoor units can be controlled to run in the air supply mode.
  • the target running mode can be any one of the heating mode, the refrigeration mode, and the dehumidification mode.
  • the method further comprises: acquiring absolute position information of any one of the indoor units, and determining actual position information based on the absolute position information and the relative position information.
  • a process of converting the relative position information into the actual position information after the relative position information of the plurality of indoor units is acquired is defined.
  • the absolute position information of any one of the indoor units is acquired, and the actual position information is determined based on the absolute position information.
  • the user can more intuitively determine positions of different indoor units and the distribution condition of different indoor units by converting the absolute position information, to control different indoor units based on the actual position information.
  • the method further comprises: acquiring a return air temperature difference sequence of each indoor unit; determining an evaluation index based on a mean and a variance of return air temperature difference sequences of every two indoor units; and determining a preset number of indoor units around each indoor unit based on the evaluation index.
  • the relative position information can be corrected based on the obtained position distribution condition of different indoor units. Therefore, the reliability of the obtained relative position information is improved, and the control accuracy of different indoor units based on the relative position information is improved accordingly.
  • the evaluation index is an absolute value of a product of the mean and the variance of the return air temperature difference sequences.
  • the present invention provides a device for position determination.
  • the device is configured for a plurality of indoor units and comprises: an acquisition device configured to acquire return air temperature information of each indoor unit; a determination device configured to determine a first correlation coefficient between every two indoor units based on the return air temperature information; a classification device configured to classify the plurality of indoor units based on the first correlation coefficient and a preset threshold to obtain a set number of classified groups; and a generation device configured to generate relative position information in each classified group and taking the first indoor units as a locating point based on the first correlation coefficient.
  • a device for position determination is provided according to the embodiment of the present invention.
  • the device for position determination By applying the device for position determination to the plurality of indoor units, relative positions of the plurality of indoor units can be measured.
  • maintenance personnel are not required to manually maintain a relative position relation of the plurality of indoor units. Therefore, the maintenance difficulty of the relative position relation of the plurality of indoor units is reduced, and a time cost and a labor cost required for maintenance are reduced accordingly.
  • the relative position information determined through the above method for position determination of the present invention is acquired based on a measurement result, and is therefore more reliable.
  • the embodiment of the present invention is implemented based on the principles as follows: different indoor units are mounted at different positions, and a distance is formed between different indoor units and varies with different mounting positions. In the presence of the distance, the influence between different indoor units is inconsistent. In some embodiment, when one indoor unit is positioned in a first sealed environment and another indoor unit is positioned in a second sealed environment, no heat is transferred between the first sealed environment and the second sealed environment, and therefore no influence is generated between the indoor units in different sealed environments. However, when there are a plurality of indoor units in a sealed environment, influence is generated between different indoor units.
  • the influence is collected, and the relative position information of different indoor units is estimated exactly through the collected influence and a correlation between the influence and the distance between different indoor units.
  • the indoor unit is an apparatus configured to adjust a temperature in a sealed environment and the indoor units influencing each other share a sealed environment
  • the above influence can be extracted by collecting the return air temperature information of the indoor unit.
  • return air temperature information of the plurality of indoor units is acquired through traversing. The closer the two indoor units are, the greater the influence between these two indoor units, and the greater the correlation coefficient between every two of the plurality of indoor units determined based on the acquired return air temperature information. Therefore, the distance between different indoor units can be represented through the correlation coefficient.
  • the correlation coefficient between different indoor units can represent a distance condition between different indoor units
  • any one of the indoor units in the classified group obtained through division can be taken as the locating point to obtain a relative position relation of the other indoor units in this classified group.
  • a relative distribution condition of all the indoor units that is, the relative position information in the present invention, can be obtained.
  • the return air temperature information of the indoor unit can be a discrete temperature, that is, return air temperature information measured by the indoor unit at every fixed measurement time interval is expressed as a temperature sequence.
  • the return air temperature information is temperature information at a return air inlet of the indoor unit.
  • a temperature sensor can be arranged at the return air inlet of the indoor unit to acquire the temperature information at the return air inlet.
  • the determination device is configured to determine a covariance of return air temperature information corresponding to every two indoor units, determine a variance of the return air temperature information corresponding to each indoor unit, and determine the first correlation coefficient based on the variance and the covariance.
  • the classification device is configured to divide two indoor units with the largest first correlation coefficient into one class; take the indoor units divided into one class as first indoor units, determine second correlation coefficients between the first indoor units and remaining indoor units, except for the first indoor units, of the plurality of outdoor units respectively, and divide two indoor units with the largest second correlation coefficient into one class until the plurality of indoor units are divided into one class; set a correlation coefficient threshold for the second correlation coefficient based on the set number of the classified groups; and divide the plurality of indoor units based on the second correlation coefficient and the correlation coefficient threshold to obtain a set number of classified groups.
  • the classification device is further configured to acquire space partition information for the plurality of indoor units; and determine the set number of the classified groups based on the space partition information.
  • the generation device is further configured to determine a quantitative value corresponding to the first correlation coefficient based on a preset quantitative relation; acquire coordinate information of an indoor unit except for any one of the indoor units based on the quantitative value and the locating point; and generate the relative position information based on the locating point and the coordinate information.
  • the correlation coefficient is negatively correlated with the quantitative value.
  • the relative position information is a topological graph.
  • the acquisition device is further configured to control the plurality of indoor units to run in a refrigeration mode, a heating mode, or a dehumidification mode; and alternatively, control one of the plurality of indoor units to run in a refrigeration mode, a heating mode, or a dehumidification mode, and control the others of the plurality of indoor units to run in an air supply mode.
  • the generation device is further configured to acquire absolute position information of any one of the indoor units, and determine actual position information based on the absolute position information and the relative position information.
  • the generation device is further configured to acquire a return air temperature difference sequence of each indoor unit; determine an evaluation index based on a mean and a variance of return air temperature difference sequences of every two indoor units; and determine a preset number of indoor units around each indoor unit based on the evaluation index.
  • the evaluation index is an absolute value of a product of the mean and the variance of the return air temperature difference sequences.
  • an air conditioning system comprises: a plurality of indoor units; and a control device, where the control device communicates with the plurality of the indoor units and is configured to execute steps of any one of the methods for position determination in the first aspect.
  • An air conditioning system provided according to the embodiment of the present invention comprises the control device and the plurality of indoor units.
  • the control device executes the steps of any one of the methods for position determination in the first aspect. Therefore, the air conditioning system has all the beneficial effects of any one of the methods for position determination, which will not be repeated herein.
  • the air conditioning system further comprises: an outdoor unit, where the outdoor unit is connected to the indoor unit.
  • the present invention provides a readable storage medium.
  • the readable storage medium stores a program or an instruction, where the program or the instruction implements steps of any one of the methods for position determination in the first aspect.
  • the present invention provides a method for position determination.
  • the method comprises:
  • a method for position determination is provided according to the embodiment of the present invention.
  • this method for position determination By running this method for position determination, relative positions of the plurality of indoor units can be measured. In this process, maintenance personnel are not required to manually maintain a relative position relation of the plurality of indoor units. Therefore, the maintenance difficulty of the relative position relation of the plurality of indoor units is reduced, and a time cost and a labor cost required for maintenance are reduced accordingly.
  • the relative position information determined through the above method for position determination of the present invention is acquired based on a measurement result, and is therefore more reliable.
  • the embodiment of the present invention is implemented based on the principles as follows: different indoor units are mounted at different positions, and a distance is formed between different indoor units and varies with different mounting positions. In the presence of the distance, the influence between different indoor units is inconsistent. In some embodiment, when one indoor unit is positioned in a first sealed environment and another indoor unit is positioned in a second sealed environment, no heat is transferred between the first sealed environment and the second sealed environment, and therefore no influence is generated between the indoor units in different sealed environments. However, when there are a plurality of indoor units in a sealed environment, influence is generated between different indoor units.
  • the influence is collected, and the relative position information of different indoor units is estimated exactly through the collected influence and a correlation between the influence and the distance between different indoor units.
  • the indoor unit is an apparatus configured to adjust a temperature in a sealed environment and the indoor units influencing each other share a sealed environment
  • the above influence can be extracted by collecting the return air temperature information of the indoor unit.
  • return air temperature information of the plurality of indoor units is acquired through traversing. The closer the two indoor units are, the greater the influence between these two indoor units, and the greater the correlation coefficient between every two of the plurality of indoor units determined based on the acquired return air temperature information. Therefore, the distance between different indoor units can be represented through the correlation coefficient.
  • the correlation coefficient between different indoor units can represent a distance condition between different indoor units
  • any one of the indoor units in the classified group obtained through division can be taken as the locating point to obtain a relative position relation of the other indoor units in this classified group.
  • a relative distribution condition of all the indoor units that is, the relative position information in the present invention, can be obtained.
  • the return air temperature information of the indoor unit can be a discrete temperature, that is, return air temperature information measured by the indoor unit at every fixed measurement time interval is expressed as a temperature sequence.
  • the return air temperature information is temperature information at a return air inlet of the indoor unit.
  • a temperature sensor can be arranged at the return air inlet of the indoor unit to acquire the temperature information at the return air inlet.
  • a determination solution for a first correlation coefficient is defined.
  • the determination solution comprises:
  • the determination solution for the first correlation coefficient is defined.
  • X denotes one of every two indoor units
  • Y denotes the other of every two indoor units
  • cov ( X, Y ) denotes a covariance of return air temperature information of X and Y
  • Var [X] denotes a variance of the return air temperature information of X
  • Var [ Y ] denotes a variance of the return air temperature information of Y.
  • a determination process of a set number of classified groups is defined.
  • the determination process comprises:
  • a distance between different indoor units can be represented through the first correlation coefficient. Therefore, after the first correlation coefficients between every two of the plurality of indoor units are determined, the first correlation coefficients obtained can be ranked, and then the two indoor units with the largest correlation coefficient are determined. It can be seen from the above that the first correlation coefficient can be configured to represent the distance between different indoor units. Therefore, the two indoor units corresponding to the largest first correlation coefficient are two indoor units closest to each other.
  • the set number is acquired. Since the set number is configured to represent the number of classified groups into which the plurality of indoor units are divided, the correlation coefficient threshold can be set based on the set number, and the indoor units in the classified group are divided based on the set correlation coefficient threshold, and finally a set number of classified groups are obtained.
  • the indoor units that have been divided into one class are taken as a whole, that is, the first indoor units in the present invention, and the second correlation coefficients between the first indoor unit and the indoor units that are unclassified are determined. Therefore, the plurality of indoor unit can be aggregated through the second correlation coefficients, and can finally be aggregated into one class.
  • Fig. 5 there are 9 indoor units, which can be divided into 4 areas: an office area, conference area 1, conference area 2, and a corridor area on the basis of building planar partition.
  • the indoor units comprise indoor unit 1, indoor unit 2, indoor unit 3, indoor unit 4, indoor unit 5, indoor unit 6, indoor unit 7, indoor unit 8, and indoor unit 9.
  • Indoor unit 1 is denoted by 1#
  • indoor unit 2 is denoted by 2#
  • indoor unit 3 is denoted by 3#
  • indoor unit 4 is denoted by 4#
  • indoor unit 5 is denoted by 5#
  • indoor unit 6 is denoted by 6#
  • indoor unit 7 is denoted by 7#
  • indoor unit 8 is denoted by 8#
  • indoor unit 9 is denoted by 9#.
  • the second correlation coefficient can be a mean of the first correlation coefficients between the indoor units divided into one class and the first indoor unit.
  • the correlation coefficient threshold is further a set correlation coefficient. As can be seen from the above table, the correlation coefficient threshold is selected from 0.8314 to 0.9016.
  • the correlation coefficient threshold is set for the second correlation coefficient based on the set number of the classified groups. It can be understood that the correlation coefficient threshold is rationally selected based on the set number, and the plurality of indoor units are divided into a set number of classified groups.
  • the process further comprises: space partition information for the plurality of indoor units is acquired; and the set number is determined based on the space partition information.
  • the set number is determined based on the acquired space partition information, and therefore can be rationally set based on the space for mounting the indoor units.
  • the influence on selection of a preset threshold caused by irrational setting of the set number is reduced, the accuracy of the relative position information of the plurality of indoor units is ensured, and finally the maintenance difficulty of the relative position information for maintenance personnel is reduced, in some embodiment, a human resource operation cost and a time cost are reduced.
  • the space partition information can be determined based on information collected by mounting personnel in a process of mounting the plurality of indoor units.
  • the space partition information can be room division information or office area division condition.
  • a specific generation process of relative position information is defined. As shown in Fig. 7 , the process comprises:
  • a generation manner of the relative position information is defined.
  • the correlation coefficient is correlated with a distance between different indoor units. Therefore, a mapping relation between the correlation coefficient and the distance between different indoor units can be pre-constructed, and the distance between different indoor units can be determined based on the mapping relation after the correlation coefficient is acquired.
  • the preset quantitative relation is the mapping relation between the correlation coefficient and the distance between different indoor units. Therefore, coordinate information corresponding to the indoor unit corresponding to the quantitative value can be determined based on a locating point of any one of the indoor units in this classified group and the quantitative value after the quantitative value is determined. Accordingly, a relative position relation between any one of the indoor units and the other indoor units is obtained based on the locating point and the coordinate information.
  • the locating point can be interpreted as a coordinate origin.
  • the correlation coefficient is negatively correlated with the quantitative value.
  • a correspondence relation between thecorrelation coefficient and the quantitative value is shown in Table 7.
  • Correlation coefficient 0.9356 0 0.9305 0.9511 0.8722 0.8966 0.7134 0.4081 0.8497 Quantitative distance 0.5796 0 0.6255 0.4401 1.1502 0.9306 2.5794 5.3271 1.3527 33# Correlation coefficient 0.9192 0.9305 0 0.9728 0.9617 0.9522 0.7519 0.4081 0.8497 Quantitative distance 0.7272 0.6255 0 0.2448 0.3447 0.4302 2.2329 5.3271 1.3527 44# Correlation coefficient 0.9025 0.9511 0.9728 0 0.9344 0.9693 0.80
  • Fig. 8 is a schematic diagram of a quantitative relative distance between different indoor units.
  • the relative position information can be expressed in the form of Table 8.
  • Table 8 x y 1# 0 0 2# 0 0.5796 3# 0.601637 0.408476 4# 0.388183 0.786969 5# 1.077311 0.176661 6# 0.853836 0.949709 7# 1.592272 2.608879 8# 4.980227 2.470463 9# 0.961043 1.531543
  • x and y denote coordinates on coordinate axes perpendicular to each other respectively.
  • the relative position information of the plurality of indoor units can be obtained based on Table 8.
  • Fig. 10 is one schematic form diagram of the relative position information.
  • the relative position information is a topological graph.
  • the expression form of the relative position information is defined.
  • Fig. 11 is one form of a topological graph.
  • Fig. 12 is a schematic diagram of an expression form of a preset quantitative relation.
  • the process further comprises: a return air temperature difference sequence of each indoor unit is acquired; an evaluation index is determined based on a mean and a variance of return air temperature difference sequences between every two indoor units; and a preset number of indoor units around each indoor unit are determined based on the evaluation index.
  • a return air temperature curve of the apparatus may be similar with that of any indoor unit in the same running state.
  • a mean of the return air temperature difference obtained in this case is very small and cannot be used for determination.
  • the return air temperature difference sequence will fluctuate greatly. Therefore, the variance of the return air temperature difference sequences is calculated additionally, and a large variance of the return air temperature sequence will be obtained in this case.
  • a mean and a variance of return air temperature differences between the indoor units are calculated based on collected data, and data shown in Table 9 are obtained as the evaluation index. Based on the data in Table 9, x indoor units having the most similar evaluation indexes with each indoor unit are searched for to obtain an adjacent indoor unit group having x indoor units of each indoor unit.
  • 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
  • Table 10 can be obtained.
  • Table 10 Indoor unit No. Adjacent indoor unit No. 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 condition of the plurality of indoor units can be obtained.
  • the position distribution condition of different indoor units can be obtained based on the above distribution condition.
  • the relative position information can be corrected based on the position distribution condition of different indoor units obtained based on Table 10. Therefore, the reliability of the obtained relative position information can be improved, and the control accuracy of different indoor units based on the relative position information can be improved accordingly.
  • the evaluation index is the absolute value of a product of the mean and the variance of the return air temperature difference sequences.
  • the process before the step that return air temperature information of each indoor unit is acquired, the process further comprises: the plurality of indoor units are controlled to run in a refrigeration mode, a heating mode, or a dehumidification mode; and alternatively, one of the plurality of indoor units is controlled to run in a refrigeration mode, a heating mode, or a dehumidification mode, and the others of the plurality of indoor units are controlled to run in an air supply mode.
  • the relative position information of different indoor units can be rapidly determined by defining running states of the plurality of indoor units.
  • the plurality of indoor units can be controlled to simultaneously run in the refrigeration mode, the heating mode, or the dehumidification mode, to simultaneously adjust a temperature of an environment in which the indoor units are positioned, and determine the relative position information of different indoor units while rapid refrigeration, heating, or dehumidification is realized.
  • the plurality of indoor units before the step that return air temperature information of each indoor unit is acquired, can further be controlled to run in a target running mode in sequence, and the other indoor units can be controlled to run in the air supply mode.
  • the target running mode can be any one of the heating mode, the refrigeration mode, and the dehumidification mode.
  • the method further comprises: absolute position information of any one of the indoor units is acquired, and actual position information is determined based on the absolute position information and the relative position information.
  • a process of converting the relative position information into the actual position information after the relative position information of the plurality of indoor units is acquired is defined.
  • the absolute position information of any one of the indoor units is acquired, and the actual position information is determined based on the absolute position information.
  • the user can more intuitively determine positions of different indoor units and the distribution condition of different indoor units by converting the absolute position information, to control different indoor units based on the actual position information.
  • the present invention provides a device 600 for position determination.
  • the device is configured for a plurality of indoor units and comprises: an acquisition device 602 configured to acquire return air temperature information of each indoor unit; a determination device 604 configured to determine a first correlation coefficient between every two indoor units based on the return air temperature information; a classification device 606 configured to classify the plurality of indoor units based on the first correlation coefficient and a preset threshold to obtain a set number of classified groups; and a generation device 608 configured to generate relative position information in each classified group based on the first correlation coefficient by takingthe first indoor units as a locating point.
  • a device 600 for position determination is provided based on the embodiment of the present invention.
  • the device 600 for position determination By applying the device 600 for position determination to the plurality of indoor units, relative positions of the plurality of indoor units can be measured. In this process, maintenance personnel are not required to manually maintain a relative position relation of the plurality of indoor units. Therefore, the maintenance difficulty of the relative position relation of the plurality of indoor units is reduced, and a time cost and a labor cost required for maintenance are reduced accordingly.
  • the relative position information determined through the above method for position determination of the present invention is acquired based on a measurement result, and is therefore more reliable.
  • the embodiment of the present invention is implemented based on the principles as follows: different indoor units are mounted at different positions, and a distance is formed between different indoor units and varies with different mounting positions. In the presence of the distance, the influence between different indoor units is inconsistent. In some embodiment, when one indoor unit is positioned in a first sealed environment and another indoor unit is positioned in a second sealed environment, no heat is transferred between the first sealed environment and the second sealed environment, and therefore no influence is generated between the indoor units in different sealed environments. However, when there are a plurality of indoor units in a sealed environment, influence is generated between different indoor units.
  • the influence is collected, and the relative position information of different indoor units is estimated exactly through the collected influence and a correlation between the influence and the distance between different indoor units.
  • the indoor unit is an apparatus configured to adjust a temperature in a sealed environment and the indoor units influencing each other share a sealed environment
  • the above influence can be extracted by collecting the return air temperature information of the indoor unit.
  • return air temperature information of the plurality of indoor units is acquired through traversing. The closer the two indoor units are, the greater the influence between these two indoor units, and the greater the correlation coefficient between every two of the plurality of indoor units determined based on the acquired return air temperature information. Therefore, the distance between different indoor units can be represented through the correlation coefficient.
  • the correlation coefficient between different indoor units can represent a distance condition between different indoor units
  • any one of the indoor units in the classified group obtained through division can be taken as the locating point to obtain a relative position relation of the other indoor units in this classified group.
  • a relative distribution condition of all the indoor units that is, the relative position information in the present invention, can be obtained.
  • the return air temperature information of the indoor unit can be a discrete temperature, that is, return air temperature information measured by the indoor unit at every fixed measurement time interval is expressed as a temperature sequence.
  • the return air temperature information is temperature information at a return air inlet of the indoor unit.
  • a temperature sensor can be arranged at the return air inlet of the indoor unit to acquire the temperature information at the return air inlet.
  • the present invention provides an air conditioning system.
  • the air conditioning system comprises: a plurality of indoor units; and a control device, where the control device communicates with the plurality of the indoor units and is configured to execute steps of any method for position determination.
  • the air conditioning system comprises the control device and the plurality of indoor units.
  • the control device executes the steps of any one of the above methods for position determination. Therefore, the air conditioning system has all the beneficial effects of any one of the above methods for position determination.
  • relative positions of the plurality of indoor units can be measured.
  • maintenance personnel are not required to manually maintain a relative position relation of the plurality of indoor units. Therefore, the maintenance difficulty of the relative position relation of the plurality of indoor units is reduced, and a time cost and a labor cost required for maintenance are reduced accordingly.
  • the relative position information determined through the above method for position determination of the present invention is acquired based on a measurement result, and is therefore more reliable. Other effects will not be repeated herein.
  • the air conditioning system further comprises: an outdoor unit, where the outdoor unit is connected to the indoor unit.
  • a refrigerant interaction is performed between the outdoor unit and the indoor unit to exchange heat.
  • a readable storage medium stores a program or an instruction, where the program or the instruction implements steps of any one of the above methods for position determination when executed by a processor.
  • the program or the instruction stored on the readable storage medium provided by the present invention can implement the steps of any one of the above methods for position determination when executed. Therefore, the readable storage medium has all the beneficial effects of any one of the above methods for position determination, which will not be repeated herein.
  • a plurality of means two or more; unless expressly defined otherwise, the orientation or position relations indicated by the terms “upper”, “lower”, etc. are based on the orientation or position relations shown in the accompanying drawings, merely for facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be interpreted as limiting the present invention; and the terms “connection”, “mounting”, “fixed”, etc. should be understood in a broad sense.
  • a “connection” can be a fixed connection, a detachable connection, an integrated connection, a direct connection, or an indirect connection via an intermediate medium.

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EP21946778.4A 2021-06-22 2021-11-05 Procédé et appareil de détermination de position et système de climatisation et support d'enregistrement lisible Pending EP4300002A4 (fr)

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