CN115111825B

CN115111825B - Method and device for determining operation frequency of compressor

Info

Publication number: CN115111825B
Application number: CN202210698914.4A
Authority: CN
Inventors: 王瑞佳; 高岭; 沙建鹤; 林文涛; 任兆亭
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2023-10-31
Anticipated expiration: 2042-06-20
Also published as: CN115111825A

Abstract

The embodiment of the application provides a method and a device for determining the operating frequency of a compressor, which relate to the technical field of air conditioners and are used for improving the efficiency of determining the operating frequency of the compressor. The method is applied to the terminal equipment with the near field communication module, and comprises the following steps: acquiring operation data of a multi-split air conditioning system through a near field communication module, wherein the multi-split air conditioning system comprises N compressors, and N is a positive integer; determining an initial operating frequency of each of the N compressors based on operating data of the multi-split air conditioning system; acquiring a frequency correction coefficient, and correcting the initial operating frequency of each compressor based on the frequency correction coefficient to obtain the target operating frequency of each compressor; and further, a control instruction is sent to the multi-split air conditioning system, wherein the control instruction comprises the target operating frequency of each compressor, and the control instruction is used for indicating each compressor in the N compressors to work at the corresponding target operating frequency.

Description

Method and device for determining operation frequency of compressor

Technical Field

The application relates to the technical field of air conditioners, in particular to a method and a device for determining the running frequency of a compressor.

Background

Along with the development of economy and society, multi-split air conditioning systems commonly called one-to-many are increasingly widely used in various places such as entertainment, home, work and the like.

At present, the running frequency of a compressor in a multi-split air conditioning system is determined and applied by a micro control unit (microcontroller unit, MCU) of the multi-split air conditioning system according to running data of the multi-split air conditioning system. However, the MCU of the multi-split air conditioning system has lower efficiency for determining the operation frequency of the compressor, so that the operation frequency of the compressor of the multi-split air conditioning system cannot be timely adjusted, the temperature of the environment where the user is located cannot meet the requirement of the user on the temperature in real time under the operation frequency of the compressor determined by the MCU of the multi-split air conditioning system, and the use experience of the user is affected.

Disclosure of Invention

The embodiment of the application provides a method and a device for determining the operating frequency of a compressor, which are used for improving the efficiency of determining the operating frequency of the compressor.

In order to achieve the above purpose, the present application adopts the following technical scheme.

In a first aspect, an embodiment of the present application provides a method for determining an operating frequency of a compressor, where the method is applied to a terminal device having a near field communication (near field communication, NFC) module, and the method includes: acquiring operation data of a multi-split air conditioning system through an NFC module, wherein the multi-split air conditioning system comprises N compressors, and N is a positive integer; determining an initial operating frequency of each of the N compressors based on operating data of the multi-split air conditioning system; acquiring a frequency correction coefficient, and correcting the initial operating frequency of each compressor based on the frequency correction coefficient to obtain the target operating frequency of each compressor; and sending a control instruction to the multi-split air conditioning system, wherein the control instruction comprises a target operating frequency of each compressor, and the control instruction is used for indicating each compressor in the N compressors to work at the corresponding target operating frequency.

The technical scheme provided by the application has at least the following beneficial effects: according to the technical scheme provided by the application, the terminal equipment can rapidly acquire the operation data of the multi-split air conditioning system through the NFC module, and further the terminal equipment calculates the initial operation frequency of each compressor in the multi-split air conditioning system according to the operation data of the multi-split air conditioning system. And correcting the initial operating frequency of each compressor according to the frequency correction coefficient to obtain the target operating frequency of each compressor.

It can be understood that the operation capability of the terminal device is higher than that of the MCU of the multi-split air conditioning system. The initial operation frequency of each compressor in the multi-split air conditioning system is calculated through the terminal equipment, so that the efficiency of determining the operation frequency of the compressors can be improved, and the operation pressure of an MCU of the multi-split air conditioning system is reduced. After the initial operation frequency of each compressor is determined, the initial operation frequency of each compressor is corrected according to the frequency correction coefficient, so that the temperature of a room where a user is located under the target operation frequency of each compressor can be matched with the requirement of the user, and the use experience of the user is improved.

In some embodiments, the multi-split air conditioning system further includes M indoor units, M being an integer greater than 1, each indoor unit including a fan; when the multi-split air conditioning system is in the refrigeration mode, the operation data of the multi-split air conditioning system comprises: the number of indoor units in the heating mode, the number of indoor units in the cooling mode, the heating power of indoor units in the heating mode among the M indoor units, the heating power of indoor units not in the heating mode among the M indoor units, and the exhaust temperature value of each compressor.

In some embodiments, based on the operation data of the multi-split air conditioning system, an initial operation frequency of each of the N compressors is determined, satisfying the following formula:

wherein Fc (N) is the initial operating frequency of any one of the N compressors, ncol is the refrigeration constant, HP _Con(i) The temperature correction coefficient of the ith indoor unit in the M indoor units is Kc (i), the heating control constant is KT, the difference between the most exhaust temperature value and the least exhaust temperature value in the exhaust temperature values of each compressor is KPd, NHot is the heating constant, and HP _Hon(i) Kh (i) is the number of the ith indoor units in the M indoor units in the heating mode, kfan (i) is the air quantity correction coefficient of the fans of the ith indoor units in the M indoor units, S is the number of the indoor units in the heating mode in the M indoor units, and HP _HToff(i) The heating power of the ith indoor unit in S indoor units in the heating mode, M-S is the number of indoor units which are not in the heating mode in M indoor units, and HP _Hoff(i) The temperature correction coefficient is the heating power of the ith indoor unit in M-S indoor units which are not in a heating mode, KTout is the predicted temperature value of the environment where N compressors are located, nout is a constant, and khp is the temperature correction coefficient of the exhaust temperature value of the N compressors.

In some embodiments, the multi-split air conditioning system further includes M indoor units, M is an integer greater than 1, the M indoor units include Z water machines, and Z is a positive integer; when the multi-split air conditioning system is in the heating mode, the operation data of the multi-split air conditioning system comprises:

the number of indoor units in the cooling mode, the refrigerating power of each of the Z water units, the number of indoor units in the heating mode, the exhaust temperature value of each compressor, the heating power of each of the Z water units, the heating power of the indoor units in the heating mode among the M indoor units, the heating power of the water units in the heating mode among the Z water units, the heating power of the indoor units not in the heating mode among the M indoor units, and the heating power of the water units not in the heating mode among the Z water units.

wherein Fc (N) is the initial operating frequency of any one of the N compressors, HP _Con(i) Kc (i) is the temperature correction coefficient of the ith indoor unit in the M indoor units, HPw, and is the number of the ith indoor unit in the M indoor units in the refrigeration mode _Con(i) The heating power of the ith water machine in the heating mode in the Z water machines is Kwc (i) is the temperature correction coefficient of the ith water machine in the Z water machines, KT is a heating control constant, KPd is the difference between the maximum exhaust temperature value and the minimum exhaust temperature value in the exhaust temperature values of each compressor, and HP _Hon(i) Kh (i) is the number of the ith indoor unit in the M indoor units in the heating mode, kfan (i) is the air quantity correction coefficient of the fan of the ith indoor unit in the M indoor units, and HPw _Hon(i) The refrigerating power of the ith water machine in the heating mode in the Z water machines is Kwh (i) is the water temperature correction coefficient of the ith water machine in the Z water machines, S is the number of indoor machines in the heating mode currently in M indoor machines, and HP is the number of the indoor machines in the heating mode currently in the M indoor machines _HToff(i) For the heating power of the ith indoor unit in S indoor units currently in the heating mode, HPw _HToff(i) The heating power of the ith water machine in the Z water machines is M-S, and the number of indoor machines which are not in heating mode in M indoor machines is HP _Hoff(i) Is HPw for heating power of the ith indoor unit in M-S indoor units which are not in heating mode _Hoff(i) The heating power of the ith water machine which is not in the heating mode in the Z water machines is calculated, khp is a temperature correction coefficient of the exhaust temperature values of the N compressors, and KT is a heating control constant.

In some embodiments, obtaining the frequency correction coefficients includes:

receiving an operation instruction of a user;

in response to an operation instruction by a user, a frequency correction coefficient is determined.

In a second aspect, an embodiment of the present application provides a determining apparatus, including: the communication unit is used for acquiring operation data of the multi-split air conditioning system through the NFC module, wherein the multi-split air conditioning system comprises N compressors, and N is a positive integer; the processing unit is used for determining the initial operating frequency of each compressor in the N compressors based on the operating data of the multi-split air conditioning system; the communication unit is further used for: acquiring a frequency correction coefficient, and correcting the initial operating frequency of each compressor based on the frequency correction coefficient to obtain the target operating frequency of each compressor; and sending a control instruction to the multi-split air conditioning system, wherein the control instruction comprises a target operating frequency of each compressor, and the control instruction is used for indicating each compressor in the N compressors to work at the corresponding target operating frequency.

In a third aspect, an embodiment of the present application provides a determining apparatus, including: one or more processors; one or more memories; wherein the one or more memories are configured to store computer program code comprising computer instructions that, when executed by the one or more processors, perform any of the methods of determining the operating frequency of a compressor provided in the first aspect described above.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium comprising computer instructions that, when run on a computer, cause the computer to perform any one of the methods of determining the operating frequency of a compressor provided in the first aspect.

In a fifth aspect, embodiments of the present application provide a computer program product directly loadable into a memory and comprising software code, the computer program product being capable of performing, when loaded and executed via a computer, any of the methods of determining the operating frequency of a compressor as provided in the first aspect.

The advantageous effects of the second to fifth aspects of the present application may be referred to for analysis of the advantageous effects of the first aspect, and will not be described here again.

Drawings

The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and do not limit the application.

Fig. 1 is a schematic structural diagram of a multi-split air conditioning system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an electronic expansion valve according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of another multi-split air conditioning system according to an embodiment of the present application;

fig. 4 is a schematic diagram of a refrigeration cycle principle of a multi-split air conditioning system according to an embodiment of the present application;

fig. 5 is a hardware configuration block diagram of a multi-split air conditioning system according to an embodiment of the present application;

fig. 6 is an interaction schematic diagram of a controller and a terminal device of a multi-split air conditioning system according to an embodiment of the present application;

FIG. 7 is a flow chart of a method for determining the operating frequency of a compressor according to an embodiment of the present application;

fig. 8 is an interaction schematic diagram of an NFC module of a terminal device and an NFC module of a multi-split air conditioning system according to an embodiment of the present application;

fig. 9 is an interaction schematic diagram of an outdoor unit-NFC module-terminal device according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a determining apparatus according to an embodiment of the present application;

fig. 11 is a schematic hardware structure of a determining apparatus according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art. In addition, when describing a pipeline, the terms "connected" and "connected" as used herein have the meaning of conducting. The specific meaning is to be understood in conjunction with the context.

At present, the determination of the operation frequency of the compressor in the multi-split air conditioning system is determined by the MCU of the multi-split air conditioning system according to the operation data of the multi-split air conditioning system, and then the MCU of the multi-split air conditioning system controls the compressor of the multi-split air conditioning system to work at the corresponding operation frequency. However, at present, the multi-split air conditioning system can comprise N compressors, the determination of N compressor operation frequencies relates to a complex algorithm, and the operation capability of an MCU of the multi-split air conditioning system is limited, so that the efficiency of the MCU of the multi-split air conditioning system for determining the operation frequencies of the compressors is low, and further the adjustment of the operation frequencies of the compressors of the multi-split air conditioning system is not timely, so that the temperature of the environment where a user is located under the operation frequencies of the compressors determined by the MCU of the multi-split air conditioning system cannot meet the requirement of the user on the temperature in real time, and the use experience of the user is affected.

Based on the above, the embodiment of the application provides a method for determining the operation frequency of a compressor, by configuring an NFC module on a multi-split air conditioning system, so that a terminal device with the NFC module can obtain the operation data of the multi-split air conditioning system through the NFC module, and further the terminal device with the NFC module determines the operation frequency of the compressor of the multi-split air conditioning system according to the operation data of the multi-split air conditioning system. It can be understood that the operation capability of the terminal equipment is higher than that of the MCU of the multi-split air conditioning system, the operation frequency of the compressor of the multi-split air conditioning system is determined by combining the operation data of the multi-split air conditioning system by the terminal equipment, the operation frequency of the compressor of the multi-split air conditioning system can be rapidly determined, the efficiency of determining the operation frequency of the compressor of the multi-split air conditioning system is improved, the operation frequency of the compressor can be timely adjusted by the multi-split air conditioning system, the temperature of the environment where a user is located under the operation frequency of the compressor of the multi-split air conditioning system can meet the requirement of the user on the temperature in real time, the MCU of the multi-split air conditioning system can discard complex algorithms to determine the operation frequency of the compressor, and the operation pressure of the MCU of the multi-split air conditioning system is reduced.

Fig. 1 is a schematic structural diagram of a multi-split air conditioning system according to an exemplary embodiment of the present application. It should be noted that, the multi-split air conditioning system according to the embodiment of the present application may include multi-split air conditioning systems of different models, and the multi-split air conditioning systems of different models are exemplified by the schematic structural diagram of the multi-split air conditioning system shown in fig. 1.

As shown in fig. 1, the multi-split air conditioning system 10 includes N outdoor units 11, a throttle device 12, M indoor units 13, and a controller 14 (not shown in fig. 1). Wherein M is an integer greater than 1, and N is a positive integer.

It should be noted that, the schematic structural diagram of the multi-split air conditioning system shown in fig. 1 is exemplified by the case that the multi-split air conditioning system 10 includes 1 outdoor unit, but it is not representative that the multi-split air conditioning system 10 includes only 1 outdoor unit.

In some embodiments, the types of indoor units 13 include a water machine and a fluorine machine, wherein the water machine is transported with water as a refrigerant medium. The fluorine machine uses refrigerant containing fluorine or not containing fluorine as a refrigerant to be conveyed in a pipeline.

In some embodiments, the M indoor units 13 include Z water machines, where Z is a positive integer.

In some embodiments, the throttle device 12 includes a plurality of electronic expansion valves 121, each electronic expansion valve 121 corresponding to one indoor unit 13. There is a pipe connection between the plurality of outdoor units 11 and the plurality of indoor units 13, and an electronic expansion valve 121 is provided on a pipe between each indoor unit 13 and the plurality of outdoor units 11. The conduit, also known as a gas-liquid tube, comprises: a gas pipe 15 for transporting a gaseous refrigerant, and a liquid pipe 16 for transporting a two-phase refrigerant.

In some embodiments, the throttling device 12 is used for adjusting the fluid flow rate in the air pipe 15 and the liquid pipe 16 in the multi-split air conditioning system.

For example, as shown in fig. 2, for illustrating a schematic view of an electronic expansion valve setting position according to an exemplary embodiment of the present application, an electronic expansion valve 121 may be disposed on a liquid pipe 16, a throttle valve may be further disposed on the liquid pipe 16, one end of the liquid pipe 16 may be connected to an indoor heat exchanger 131 described below, and likewise, one end of an air pipe 15 may be connected to the indoor heat exchanger 131 described below.

For any one outdoor unit 11 among the plurality of outdoor units 11, the outdoor unit 11 is usually installed outdoors for assisting heat exchange in the indoor environment.

The throttle device 12 is also used to regulate the flow of refrigerant. The electronic expansion valves 121 are used for adjusting the supply amount of the refrigerant in the pipeline, and the electronic expansion valves 121 may be independent of the outdoor unit 11 (as shown in fig. 1), or may belong to a part of the outdoor unit 11 (as shown in fig. 3), and fig. 3 is a schematic structural diagram of another multi-split air conditioning system according to an exemplary embodiment of the present application. The plurality of indoor units 13 may be indoor hanging units or indoor cabinet units, which is not limited in the embodiment of the present application. The number of electronic expansion valves and the number of indoor units shown in fig. 1 or 3 are merely examples, and do not limit the embodiments of the present application.

Taking the example that the plurality of electronic expansion valves are independent of the plurality of indoor units 13, fig. 4 shows a schematic diagram of a refrigeration cycle principle of a multi-split air conditioning system.

As shown in fig. 4, the multi-split air conditioning system includes an outdoor unit 11, a throttle device 12, a plurality of indoor units 13, and a controller 14 (not shown in fig. 4). It should be noted that, the schematic refrigeration cycle diagram of the multi-split air conditioning system shown in fig. 4 is illustrated by taking the multi-split air conditioning system having one outdoor unit 11 as an example, but it does not represent that the multi-split air conditioning system has only one outdoor unit.

The outdoor unit 11 includes: a compressor 111, an outdoor heat exchanger 112, a reservoir 113, and a four-way valve 114.

In some embodiments, the compressor 111 is configured to compress refrigerant delivered by the accumulator 113 and deliver the compressed refrigerant to the throttling device 12 via the four-way valve 114. The compressor 111 may be an inverter compressor of variable capacity that performs rotational speed control based on an inverter.

In some embodiments, the outdoor heat exchanger 112 is connected at one end to the reservoir 113 via a four-way valve 114 and at the other end to the restriction device 12. The outdoor heat exchanger 112 has a first inlet and outlet for allowing the refrigerant to flow between the outdoor heat exchanger 112 and the suction port of the compressor 111 via the accumulator 113, and has a second inlet and outlet for allowing the refrigerant to flow between the outdoor heat exchanger 112 and the throttle device 12. The outdoor heat exchanger 112 exchanges heat between the outdoor air and the hot and cold air flowing through the heat transfer pipe connected between the first inlet and the second inlet, and the outdoor heat exchanger 112 operates as a condenser in the cold cycle. For ease of description, the outdoor heat exchanger 112 is exemplified as a condenser.

In some embodiments, a reservoir 113 is connected to the compressor 111 at one end and to the outdoor heat exchanger 112 at the other end via a four-way valve 114. In the accumulator 113, the refrigerant flowing from the outdoor heat exchanger 112 to the compressor 111 via the four-way valve 114 is separated into a gas refrigerant and a liquid refrigerant. The gas refrigerant is mainly supplied from the accumulator 113 to the suction port of the compressor 111.

In some embodiments, four ports of four-way valve 114 are connected to compressor 111, outdoor heat exchanger 112, reservoir 113, and plurality of electronic expansion valves 121, respectively. The four-way valve 114 is used to switch between cooling and heating by changing the flow direction of the refrigerant in the system piping.

The flow direction of the refrigerant in the principle of the refrigeration cycle is shown by the arrow flow direction shown in fig. 4:

the compressor 111 discharges high temperature and high pressure gas, the four-way valve 114, the plurality of indoor units 13, the outdoor heat exchanger 112, the four-way valve 114, the liquid storage 113 and the suction inlet of the compressor 111, and the circulation process of the refrigerant is completed.

The indoor unit 13 includes: an indoor heat exchanger 131, a display 132, and an indoor fan 133. In some embodiments, the indoor unit 13 further includes an indoor fan motor.

In some embodiments, the indoor heat exchanger 131 has a third inlet and outlet for flowing liquid refrigerant between it and the electronic expansion valve 121, and has a fourth inlet and outlet for flowing gaseous refrigerant between it and the discharge of the compressor 111. The indoor heat exchanger 131 exchanges heat between the indoor air and the refrigerant flowing through the heat transfer pipe connected between the third inlet and the fourth inlet. In the cold cycle, the indoor heat exchanger 131 operates as an evaporator. For convenience of description, the indoor heat exchanger 131 is exemplified as an evaporator.

In some embodiments, the indoor fan 133 generates an airflow of the indoor air passing through the indoor heat exchanger 131 to promote heat exchange of the refrigerant flowing in the heat transfer pipe between the third and fourth inlets and outlets with the indoor air.

In some embodiments, the indoor fan 133 is connected to the controller 14, and the controller 14 may obtain the air volume of the indoor fan 133.

In some embodiments, an indoor fan motor is used to drive or alter the rotational speed of the indoor fan 133.

In some embodiments, the display 132 is used to display the indoor temperature or the current mode of operation.

In the embodiment of the present application, the controller 14 is a device that can generate an operation control signal according to the instruction operation code and the timing signal, and instruct the multi-split air conditioning system to execute the control instruction. By way of example, the controller may be a central processing unit (central processing unit, CPU), a general purpose processor network processor (network processor, NP), a digital signal processor (digital signal processing, DSP), a microprocessor, a microcontroller, a programmable logic device (programmable logic device, PLD), or any combination thereof. The controller may also be any other device having processing functionality, such as a circuit, device or software module, for which embodiments of the application are not limited in any way.

In some embodiments, the controller 14 may be an MCU. The MCU is also called a single chip microcomputer (single chip microcomputer) or a single chip microcomputer, which properly reduces the frequency and specification of a central processing unit (central process unit, CPU), and integrates peripheral interfaces such as a memory (memory), a counter (Timer), USB, A/D conversion, UART, PLC, DMA and the like, and even an LCD driving circuit on a single chip to form a chip-level computer for different application occasions to perform different combination control.

In addition, the controller 14 may be used to control the operation of various components within the multi-split air conditioning system 10 such that the various components of the multi-split air conditioning system 10 operate to perform various predetermined functions of the multi-split air conditioning system.

In some embodiments, the multi-split air conditioning system 10 is also attached with a remote control having functionality to communicate with the controller 14, for example, using infrared or other communication means. The remote controller is used for various controls of the multi-split air conditioning system by a user, and interaction between the user and the multi-split air conditioning system 10 is realized.

It should be understood that, in the embodiment shown in fig. 4, the throttle device 12 is independent of the plurality of indoor units 13, and if the throttle device 12 is located inside the plurality of indoor units 13, the refrigeration cycle principle of the multi-split air conditioning system is still applicable, and will not be described in detail.

Fig. 5 is a block diagram illustrating a hardware configuration of a multi-split air conditioning system according to an exemplary embodiment of the present application. As shown in fig. 5, the multi-split air conditioning system 10 may further include one or more of the following: a plurality of first temperature sensors 101, second temperature sensors 102, third temperature sensors 103, NFC modules 104, communicators 105, and memories 106.

In some embodiments, a plurality of first temperature sensors 101 are respectively connected to the controller 14, and one first temperature sensor 101 may be disposed at the discharge port of the compressor 111 for detecting a discharge port temperature value of the compressor 111 and transmitting the detected discharge port temperature value of the compressor 111 to the controller 14.

In some embodiments, the second temperature sensor 102 is connected to the controller 14, and the second temperature sensor 102 may be disposed on the air pipe 15 for detecting a temperature value of the air pipe 15 and transmitting the detected temperature value of the air pipe 15 to the controller 14.

In some embodiments, the third temperature sensor 103 is connected to the controller 14, and the third temperature sensor 103 may be disposed on the liquid pipe 16 for detecting a temperature value of the liquid pipe 16 and transmitting the detected temperature value of the liquid pipe 16 to the controller 14.

In some embodiments, the NFC module 104 is connected to the controller 14 for establishing a communication connection with other network entities, such as with a terminal device having an NFC module. Among them, NFC technology is a radio technology of short range high frequency, operating at 13.56 megahertz (MHz). NFC technology is integrated and evolved by non-contact radio frequency identification (radio frequency identification, RFID) and interconnection technology, and the NFC technology can be used for carrying out identification and data exchange with compatible equipment in a short distance by combining the functions of an induction card reader, an induction card and point-to-point on a single chip.

For example, the multi-split air conditioning system 10 may send its own operation data to the terminal device through the NFC module 104, or may receive the operation frequency of each compressor 111 sent by the terminal device through the NFC module 104.

In some embodiments, the hardware structure of the NFC module is mainly composed of three parts: charged erasable programmable read-only memory (EEPROM), registers, and static random-access memory (SRAM).

In some embodiments, the communicator 105 is coupled to the controller 14 for establishing a communication connection with a server. The communicator 105 may include a Radio Frequency (RF) module, a cellular module, a wireless fidelity (wireless fidelity, WIFI) module, a GPS module, and the like. Taking an RF module as an example, the RF module may be used for receiving and transmitting signals, in particular, transmitting the received information to the controller 14 for processing; in addition, the signal generated by the controller 14 is transmitted. Typically, the RF circuitry may include, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (low noise amplifier, LNA), a duplexer, and the like.

In some embodiments, the multi-split air conditioning system 10 may also send its own operation data to the server through the communicator 105, so that the server calculates operation parameters of each component of the multi-split air conditioning system 10 in the working process according to the operation data of the multi-split air conditioning system 10, and then sends the calculated operation parameters to the multi-split air conditioning system 10. And the controller 14 controls the components of the multi-split air conditioning system 10 to operate according to the operation parameters calculated by the server.

The server may be a single server, or may be a server cluster formed by a plurality of servers. In some implementations, the server cluster may also be a distributed cluster. In some embodiments, the service area may also be a cloud server, and the embodiment of the present application does not limit the specific type of the server.

In some embodiments, memory 106 may be used to store software programs and data. The controller 14 performs various functions and data processing of the multi-split air conditioning system 10 by running software programs or data stored in the memory 106. The memory 106 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. The memory 106 stores an operating system that enables the multi-split air conditioning system 10 to operate. The memory 106 in the present application may store an operating system and various application programs, and may also store codes for executing a method for determining an operating frequency of a compressor provided in an embodiment of the present application.

Those skilled in the art will appreciate that the hardware configuration shown in fig. 5 is not limiting of a multi-split air conditioning system, which may include more or fewer components than shown, or may combine certain components, or may have a different arrangement of components.

Fig. 6 is an interaction schematic diagram of a controller and a terminal device of a multi-split air conditioning system according to an exemplary embodiment of the present application. As can be seen from the above description about the NFC module 104, the terminal device 300 can establish a communication connection with the controller 14 of the multi-split air conditioning system 10 through the NFC module.

Note that the terminal device 300 shown in fig. 6 is only one example of a terminal device. The terminal device 300 in the present application may be a mobile phone, a tablet computer, a personal computer (personal computer, PC), a personal digital assistant (personal digital assistant, PDA), a smart watch, a netbook, a wearable electronic device, an augmented reality (augmented reality, AR) device, a Virtual Reality (VR) device, a robot, etc., and the present application is not limited to a specific form of the terminal device 300.

By way of example, taking the terminal device 300 as a mobile phone, a user may download the multi-split air conditioning system control APP on the mobile phone, where the multi-split air conditioning system control APP may be used to manage the multi-split air conditioning system. Furthermore, the user may select the online device of the multi-split air conditioning system 10, and select a control function to be executed on the multi-split air conditioning system 10 from management options of the multi-split air conditioning system 10. For example, control functions such as start-up, shut-down, switching modes (e.g., cooling mode, heating mode, or debug mode), etc. If the fact that the user clicks a start button of the intelligent home APP on the multi-split air conditioning system 10 is detected, the mobile phone can send a start instruction to the multi-split air conditioning system 10, so that the multi-split air conditioning system 10 starts up to work in response to the start instruction.

The embodiments of the present application will be described in detail below with reference to the drawings attached to the specification.

As shown in fig. 7, an embodiment of the present application provides a method for determining an operating frequency of a compressor, where the method may be applied to the terminal device shown in fig. 6, and it should be noted that the terminal device is a terminal device with an NFC module, and the method may be applied to a debug scenario of a multi-split air conditioning system, and may also be applied to an actual application scenario of the multi-split air conditioning system, where the method includes the following steps:

s101, acquiring operation data of the multi-split air conditioning system through the NFC module.

In some embodiments, after the multi-split air conditioning system is installed, the multi-split air conditioning system needs to be debugged to correct various preset indexes of the multi-split air conditioning system when the multi-split air conditioning system leaves a factory, so that the multi-split air conditioning system can meet the requirements of users as much as possible in practical application.

For example, the user can issue a debugging instruction to the multi-split air conditioning system through the multi-split air conditioning system control APP downloaded by the terminal device. And the terminal equipment responds to the debugging instruction issued by the user, and sends the debugging instruction to the multi-split air conditioning system through the NFC module so as to control the multi-split air conditioning system to enter a debugging mode. After the multi-split air conditioning system enters a debugging mode, the terminal equipment receives operation data of the multi-split air conditioning system sent by the multi-split air conditioning system through the NFC module.

In some embodiments, when a user needs to use the multi-split air conditioning system, the APP can be controlled by the multi-split air conditioning system downloaded by the terminal device to issue a startup instruction to the multi-split air conditioning system. And the terminal equipment responds to a starting instruction issued by a user, and sends the starting instruction to the multi-split air conditioning system through the NFC module so as to control the multi-split air conditioning system to start and work. After the multi-split air conditioning system is started to work, the terminal equipment receives operation data of the multi-split air conditioning system sent by the multi-split air conditioning system through the NFC module.

For how the terminal device receives the operation data of the multi-split air conditioning system through the NFC module, reference may be made to the following description of interaction between the NFC module of the terminal device and the NFC module of the multi-split air conditioning system in fig. 8, which is not repeated herein.

As can be seen from the above description of the multi-split air conditioning system, the multi-split air conditioning system may include N outdoor units, and one indoor unit includes one compressor, that is, the multi-split air conditioning system includes N compressors.

It can be appreciated that the multi-split air conditioning system includes a cooling mode and a heating mode, and when the multi-split air conditioning system is in the cooling mode, the operation data of the multi-split air conditioning system includes: the number of indoor units in the heating mode, the number of indoor units in the cooling mode, the heating power of indoor units in the heating mode among the M indoor units, the heating power of indoor units not in the heating mode among the M indoor units, and the exhaust temperature value of each compressor.

When the multi-split air conditioning system is in the heating mode, the operation data of the multi-split air conditioning system comprises: the number of indoor units in the cooling mode, the refrigerating power of each of the Z water units, the number of indoor units in the heating mode, the exhaust temperature value of each compressor, the heating power of each of the Z water units, the heating power of the indoor units in the heating mode among the M indoor units, the heating power of the water units in the heating mode among the Z water units, the heating power of the indoor units not in the heating mode among the M indoor units, and the heating power of the water units not in the heating mode among the Z water units.

It can be appreciated that the multi-split air conditioning system needs to provide refrigeration service or heating service for users in multiple rooms, and because different users have different requirements on temperature, the multi-split air conditioning system may provide refrigeration service or heating service for different rooms at the same time in the working process, that is, the multi-split air conditioning system may provide refrigeration service for some rooms when in the heating mode, so when the multi-split air conditioning system is in the cooling mode, the operation data of the multi-split air conditioning system includes the number of each indoor unit in the heating mode, the heating power of the indoor units in the heating mode in the M indoor units, and the like. When the multi-split air conditioning system is in the heating mode, the operation data of the multi-split air conditioning system may include, for example, the number of each indoor unit in the cooling mode, the cooling power of each of the Z water machines, and the like.

In some embodiments, the operation data of the multi-split air conditioning system in the cooling mode and the heating mode may further include an air volume of each fan, a gear of each fan, an air outlet temperature of each indoor unit, a return air temperature of each indoor unit, a temperature value of an air pipe, a temperature value of a liquid pipe, a temperature value of an environment where each outdoor unit is located, and the like.

S102, determining the initial operating frequency of each of N compressors based on the operating data of the multi-split air conditioning system.

In some embodiments, when the multi-split air conditioning system is in the cooling mode, determining an initial operating frequency of each of the N compressors based on the operating data of the multi-split air conditioning system, and satisfying the following formula (1):

wherein Fc (N) is the initial operating frequency of any one of the N compressors, ncol is the refrigeration constant, HP _Con(i) The temperature correction coefficient of the ith indoor unit in the M indoor units is Kc (i), the heating control constant is KT, the difference between the most exhaust temperature value and the least exhaust temperature value in the exhaust temperature values of each compressor is KPd, NHot is the heating constant, and HP _Hon(i) The number of the ith indoor unit in the M indoor units in the heating mode is Kh (i) is the number correction coefficient of the ith indoor unit in the M indoor units, and Kfan (i) is the number of the M indoor units The air quantity correction coefficient of the fan of the ith indoor unit, S is the number of indoor units in a heating mode in M indoor units, and HP _HToff(i) The heating power of the ith indoor unit in S indoor units in the heating mode, M-S is the number of indoor units which are not in the heating mode in M indoor units, and HP _Hoff(i) The temperature correction coefficient is the heating power of the ith indoor unit in M-S indoor units which are not in a heating mode, KTout is the predicted temperature value of the environment where N compressors are located, nout is a constant, and khp is the temperature correction coefficient of the exhaust temperature value of the N compressors.

In some embodiments, the heating control constant KT may be obtained from the following formula (2):

KT＝-0.07*T _amin +1.5 equation (2)

Wherein Ta is _min The minimum value of the temperature values of the environments where the outdoor units are located is more than or equal to 0.25 and less than or equal to 2.50.

In some embodiments, the difference KPd between the maximum discharge temperature value and the minimum discharge temperature value among the discharge temperature values of the N compressors may be obtained by the following formula (3):

KPd＝-2.04*(Pd _max -Pt) khp+1 formula (3)

Wherein Pd is _max The maximum exhaust temperature value in the exhaust temperature values of the N compressors is used for measuring the superheat degree or supercooling degree of one compressor, and Pt is the predicted value of the exhaust temperature values of the N compressors, wherein KT is more than or equal to 1 and less than or equal to 4.

In some embodiments, KHP may be derived from equation (4) below.

Therein, HPw _Hon(i) The refrigerating power of the ith water machine in a heating mode in the following Z water machines is more than or equal to 0.17 and less than or equal to KHP and less than or equal to KT.

In this way, the terminal device can obtain the initial operating frequency of each of the N compressors of the multi-split air conditioning system in the refrigeration mode through the above formula (1).

In some embodiments, when the multi-split air conditioning system is in the heating mode, determining an initial operating frequency of each of the N compressors based on the operating data of the multi-split air conditioning system, and satisfying the following formula (5):

wherein, HP _Con(i) Kc (i) is the temperature correction coefficient of the ith indoor unit in the M indoor units, HPw, and is the number of the ith indoor unit in the M indoor units in the refrigeration mode _Con(i) The heating power of the ith water machine in the heating mode in the Z water machines is Kwc (i) is the temperature correction coefficient of the ith water machine in the Z water machines, KT is a heating control constant, KPd is the difference between the maximum exhaust temperature value and the minimum exhaust temperature value in the exhaust temperature values of each compressor, and HP _Hon(i) Kh (i) is the number of the ith indoor unit in the M indoor units in the heating mode, kfan (i) is the air quantity correction coefficient of the fan of the ith indoor unit in the M indoor units, and HPw _Hon(i) The refrigerating power of the ith water machine in the heating mode in the Z water machines is Kwh (i) is the water temperature correction coefficient of the ith water machine in the Z water machines, S is the number of indoor machines in the heating mode in the M indoor machines, and HP is the number of the indoor machines in the heating mode _HToff(i) The heating power of the ith indoor unit in the S indoor units in the heating mode is HPw _Hoff(i) The heating power of the ith water machine in the Z water machines is M-S, and the number of indoor machines which are not in heating mode in M indoor machines is HP _Hoff(i) Is HPw for heating power of the ith indoor unit in M-S indoor units which are not in heating mode _Hoff(i) The heating power of the ith water machine which is not in the heating mode in the Z water machines is calculated, khp is a temperature correction coefficient of the exhaust temperature values of the N compressors, and KT is a heating control constant.

In this way, the terminal device can obtain the initial operating frequency of each of the N compressors of the multi-split air conditioning system in the heating mode through the above formula (5).

S103, acquiring a frequency correction coefficient, and correcting the initial operating frequency of each compressor based on the frequency correction coefficient to obtain the target operating frequency of each compressor.

In some embodiments, after the terminal device obtains the initial operating frequency of each compressor of the multi-split air conditioning system in the refrigeration mode through the above formula (1) or obtains the initial operating frequency of each compressor of the multi-split air conditioning system in the heating mode through the above formula (5), the initial operating frequency of each compressor may be displayed on a display of the terminal device for a user to view. After the initial running frequency of each compressor is checked by the user, the display of the touch terminal equipment can be selected to select the functions of the multi-split air conditioning system, and then the terminal equipment receives the touch instruction of the user.

In response to a touch instruction of a user, the terminal equipment determines a frequency correction coefficient according to the function of the multi-split air conditioning system indicated by the touch instruction and a preset corresponding relation. The preset corresponding relation comprises functions of a plurality of multi-split air conditioning systems and a plurality of frequency correction coefficients.

For example, the correspondence between the functions of the multi-split air conditioning system and the frequency correction coefficients may be shown in table 1 below.

TABLE 1

Function of multi-split air conditioning system	Frequency correction coefficient
		FWH＝0	1
FWH＝1	0.5
		FWH＝2	0.25
FWH＝3	2

The FWH is the function of the multi-split air conditioning system.

In some embodiments, the correcting the initial operating frequency of each compressor based on the frequency correction coefficient, and obtaining the target operating frequency of each compressor may be specifically implemented as: multiplying the initial operating frequency of each compressor by a frequency correction coefficient to obtain a target operating frequency for each compressor.

It can be understood that the requirements of different users on the temperature are different, and for one user, the initial operating frequency of each compressor calculated by the terminal device may be too large or too small, so that the initial operating frequency of each compressor calculated by the terminal device needs to be corrected according to the frequency correction coefficient corresponding to the function of the multi-split air conditioning system selected by the user, so as to obtain the target operating frequency of each compressor, so that the temperature of the space where the user is located when each compressor works at the corresponding target operating frequency can meet the requirements of the user.

For example, if the function of the multi-split air conditioning system selected by the user is 0, the frequency correction coefficient is 1, that is, the operation frequency of each compressor calculated by the terminal device is considered to be suitable by the user, and no adjustment is needed. If the function of the multi-split air conditioning system selected by the user is 2, the frequency correction coefficient is 0.25, that is, the operation frequency of each compressor calculated by the terminal equipment is considered to be large by the user, and the reduction processing is needed.

In some embodiments, after the function of the multi-split air conditioning system selected by the user is obtained, the terminal device may store the function of the multi-split air conditioning system selected by the user, so that when the terminal device determines the target operating frequencies of the N compressors of the multi-split air conditioning system again, the frequency correction coefficient of the multi-split air conditioning system may be determined directly according to the previously stored function of the multi-split air conditioning system, without obtaining the function of the multi-split air conditioning system selected by the user again to determine the frequency correction coefficient, thereby improving the efficiency of the target operating frequencies of the N compressors of the multi-split air conditioning system.

S104, sending a control instruction to the multi-split air conditioning system.

After determining the target operation frequency of each compressor, the terminal device can send a control instruction to the multi-split air conditioning system through the NFC module, wherein the control instruction comprises the target operation frequency of each compressor, and the control instruction is used for indicating each compressor in N compressors of the multi-split air conditioning system to work at the corresponding target operation frequency.

The embodiment shown in fig. 7 brings at least the following advantages: according to the technical scheme provided by the application, the terminal equipment can rapidly acquire the operation data of the multi-split air conditioning system through the NFC module, and further the terminal equipment calculates the initial operation frequency of each compressor in the multi-split air conditioning system according to the operation data of the multi-split air conditioning system. And correcting the initial operating frequency of each compressor according to the frequency correction coefficient to obtain the target operating frequency of each compressor. It can be understood that the operation capability of the terminal device is higher than that of the MCU of the multi-split air conditioning system. The initial operation frequency of each compressor in the multi-split air conditioning system is calculated through the terminal equipment, so that the efficiency of determining the operation frequency of the compressors can be improved, and the operation pressure of an MCU of the multi-split air conditioning system is reduced. After the initial operation frequency of each compressor is determined, the initial operation frequency of each compressor is corrected according to the frequency correction coefficient, so that the temperature of a room where a user is located under the target operation frequency of each compressor can be matched with the requirement of the user, and the use experience of the user is improved.

In the above embodiment, the determination of the operating frequency of the compressors in the multi-split air conditioning system is migrated to the terminal device for determination, and as a possible implementation manner, the controller of the multi-split air conditioning system may also access the server through the narrowband internet of things (narrow band internet of things, NB-IoT), further send the operating data of the multi-split air conditioning system to the server, and the server determines the target operating frequency of each compressor in different modes of the multi-split air conditioning system according to the above formula (1) or the above formula (5), and then sends the determined target operating frequency of each compressor to the multi-split air conditioning system through the NB-IoT, so as to control each compressor of the multi-split air conditioning system to operate at its corresponding target operating frequency.

It can be understood that the operation capability of the server is higher than that of the MCU of the multi-split air conditioning system, and the target operation frequency of each compressor of the multi-split air conditioning system determined by the server is more accurate than that of each compressor determined by the MCU of the multi-split air conditioning system. The target operation frequency of each compressor of the multi-split air conditioning system is determined through the server, so that the efficiency of determining the target operation frequency of each compressor of the multi-split air conditioning system can be improved, and the accuracy of determining the target operation frequency of each compressor of the multi-split air conditioning system can be improved.

In some embodiments, fig. 8 is a schematic interaction diagram of an NFC module of a terminal device and an NFC module of a multi-online air conditioning system according to an exemplary embodiment of the present application.

As is clear from the above description about the NFC module, the NFC module includes an EEPROM, a register, and an SRAM. In order to reduce the number of times of writing of the EEPROM, the SRAM is required to be used as much as possible. It can be understood that if the data is to be read in real time, the controller of the multi-split air conditioning system writes the data into the EEPROM of the NFC module each time, and the terminal device reads the data in the EEPROM of the NFC module again, so that the service life of the NFC module is easy to be reduced, and the real-time performance of reading and writing is not high at the same time.

As shown in fig. 8, after the terminal device approaches the NFC module of the multi-split air conditioning system, on one hand, the NFC module of the terminal device generates a Radio Frequency (RF) field, and after writing the SRAM data format code, the following cases may be included:

case 1, input. The NFC module of the terminal equipment can read the SRAM data, and further the read data is displayed on the display in real time.

Case 2, input. The NFC module of the terminal equipment can read the EEPROM data, and then the read data is displayed on the display in real time.

Case 3, output. The NFC module of the terminal equipment can display a function selection interface of the multi-split air conditioning system for a user to configure the functions of the multi-split air conditioning system, so that data is written into the SRAM and transmitted into the SRAM of the NFC module of the multi-split air conditioning system, and the NFC module of the multi-split air conditioning system can read the SRAM data.

On the other hand, after the NFC module of the multi-split air conditioning system is triggered and the NFC module of the multi-split air conditioning system reads the SRAM data format code, the following situations may be included:

case 1, output. NFC module of multi-split air conditioning system can write data into SRAM.

Case 2, output. NFC module of multi-split air conditioning system can be with data EEPROM.

Case 3, input. And the NFC module of the multi-split air conditioning system reads the SRAM data written by the NFC module of the terminal equipment, and further writes the data into the EEPROM of the NFC module of the multi-split air conditioning system.

The interaction between the NFC module of the terminal equipment and the NFC module of the multi-split air conditioning system mainly relates to the following three types:

And the real-time display of the operation data of the type 1 multi-split air conditioning system is carried out, and the format code is 0x01.

EEPROM data of NFC modules of the type 2 multi-split air conditioning system are displayed, and the format code is 0x02.

The function selection of the type 3 multi-split air conditioning system is that the format code is 0x03.

Only if the format code is 0x02, the NFC module of the terminal equipment reads the EEPROM data command, and at the moment, the main control MCU of the multi-connected air conditioning system writes the EEPROM, so that the reading and writing adopt an asynchronous operation mode.

The master-slave structure is adopted, the communication protocol adopts 16-system data format codes, and the protocol header is a command code and is divided into 11H: reading real-time operation data of the outdoor unit; 12H: reading real-time basic format data of the indoor unit; 21H: reading dial information; 22H: reading the function information; 23H: reading manufacturing coded information; 24H: reading connection topology information; 25H: reading alarm histories; 26H: reading accumulated running time of the compressor; 27H: reading brands of the multi-split air conditioning system; 31H: writing dial information; 32H: write function information; 33H: the unlock code is written.

In some embodiments, fig. 9 is a schematic diagram of interaction between an outdoor unit and an NFC module and between terminal devices according to an embodiment of the present application.

In some embodiments, the NFC module of the multi-split air conditioning system may be disposed in an outdoor unit of the multi-split air conditioning system. The outdoor unit comprises a main control substrate and other peripheral devices, wherein the main control substrate comprises an MCU main control chip, and the other peripheral devices comprise temperature sensors. NFC module includes the function board, and the function board includes MCU main control chip.

As shown in fig. 9, the MCU master control chip of the outdoor unit may communicate with the MCU master control chip of the NFC module through I2C, and the master control board of the outdoor unit communicates with the function board of the NFC module through a universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART). Meanwhile, the function board of the NFC module supports power-down excitation, two paths of 5V power supplies are isolated by using the diode, when the NFC module is not powered on, the function board of the NFC module can be excited by using the terminal equipment, and meanwhile, the main control substrate of the outdoor unit cannot be excited, so that the function board of the NFC module can work normally.

As shown in fig. 10, an embodiment of the present application provides a determining apparatus for performing the above-described method for determining an operating frequency of a compressor shown in fig. 8, the determining apparatus 2000 including: a communication unit 2001 and a processing unit 2002. In some embodiments, the determining device 2000 may further include a storage unit 2003.

In some embodiments, the communication unit 2001 is configured to obtain, through the NFC module, operation data of a multi-split air conditioning system, where the multi-split air conditioning system includes N compressors, and N is a positive integer.

The processing unit 2002 is configured to determine an initial operating frequency of each of the N compressors based on operating data of the multi-split air conditioning system.

The communication unit 2001 is also configured to: acquiring a frequency correction coefficient, and correcting the initial operating frequency of each compressor based on the frequency correction coefficient to obtain the target operating frequency of each compressor; the method comprises the steps of,

and sending a control instruction to the multi-split air conditioning system, wherein the control instruction comprises a target operating frequency of each compressor, and the control instruction is used for indicating each compressor in the N compressors to work at the corresponding target operating frequency.

In some embodiments, the communication unit 2001 is specifically configured to receive an operation instruction of a user.

The processing unit 2002 is specifically configured to determine the frequency correction coefficient in response to an operation instruction of a user.

In some embodiments, the storage unit 2003 is used to store operation data of the multi-split air conditioning system.

In some embodiments, the storage unit 2003 is used to store an initial operating frequency and a target operating frequency for each compressor in the multi-split air conditioning system.

The units in fig. 10 may also be referred to as modules, for example, the processing units may be referred to as processing modules.

The individual units in fig. 10 may be stored in a computer-readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present application may be essentially or a part contributing to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in the embodiments of the present application. The storage medium storing the computer software product includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The embodiment of the present application further provides a hardware structure schematic of a determining device, as shown in fig. 11, where the determining device 3000 includes a processor 3001, and optionally, a memory 3002 and a communication interface 3003 connected to the processor 3001. The processor 3001, the memory 3002, and the communication interface 3003 are connected by a bus 3004.

The processor 3001 may be a central processing unit (central processing unit, CPU), a general purpose processor network processor (network processor, NP), a digital signal processor (digital signal processing, DSP), a microprocessor, a microcontroller, a programmable logic device (programmable logic device, PLD), or any combination thereof. The processor 3001 may also be any other apparatus having processing functionality, such as a circuit, a device, or a software module. The processor 3001 may also include a plurality of CPUs, and the processor 3001 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

The memory 3002 may be a read-only memory (ROM) or other type of static storage device, a random access memory (random access memory, RAM) or other type of dynamic storage device that may store static information and instructions, or an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, as embodiments of the application are not limited in this respect. The memory 3002 may be separate or integrated with the processor 3001. Wherein the memory 3002 may contain computer program code. The processor 3001 is configured to execute computer program code stored in the memory 3002 to implement the methods provided by the embodiments of the present application.

The communication interface 3003 may be used to communicate with other devices or communication networks (e.g., ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), etc.). The communication interface 3003 may be a module, a circuit, a transceiver, or any device capable of enabling communications.

Bus 3004 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The bus 3004 may be classified into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 11, but not only one bus or one type of bus.

The embodiments of the present application also provide a computer-readable storage medium comprising computer-executable instructions that, when run on a computer, cause the computer to perform any of the methods provided by the above embodiments.

Embodiments of the present application also provide a computer program product comprising computer-executable instructions which, when run on a computer, cause the computer to perform any of the methods provided by the above embodiments.

The embodiment of the application also provides a chip, which comprises: a processor and an interface through which the processor is coupled to the memory, which when executed by the processor executes a computer program or computer-executable instructions in the memory, cause any of the methods provided by the embodiments described above to be performed.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer-executable instructions. When the computer-executable instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer-executable instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, from one website, computer, server, or data center by wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer readable storage media can be any available media that can be accessed by a computer or data storage devices including one or more servers, data centers, etc. that can be integrated with the media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Although the application is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the application. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

The foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for determining an operating frequency of a compressor, the method being applied to a terminal device having a near field communication NFC module, the method comprising:

acquiring operation data of a multi-split air conditioning system through the NFC module, wherein the multi-split air conditioning system comprises N compressors and M indoor units, each indoor unit comprises a fan, N is a positive integer, and M is an integer greater than 1; when the multi-split air conditioning system is in a refrigeration mode, the operation data of the multi-split air conditioning system comprise: the number of indoor units in the heating mode, the number of indoor units in the cooling mode, the heating power of indoor units in the heating mode, the heating power of indoor units not in the heating mode and the exhaust temperature value of each compressor;

Determining an initial operating frequency of each of the N compressors based on the operating data of the multi-split air conditioning system; the initial operation frequency of each compressor in the N compressors is determined based on the operation data of the multi-split air conditioning system, and the following formula is satisfied:

wherein Fc (N) is the initial operating frequency of any one of the N compressors, ncol is the refrigeration constant, HP _Con(i) Kc (i) is the temperature correction coefficient of the ith indoor unit in the M indoor units, KT is the heating control constant, KPd is the difference between the maximum and minimum exhaust temperature values in the exhaust temperature values of a plurality of compressors, NHot is the heating constant, HP _Hon(i) Kh (i) is the number of the ith indoor units in the M indoor units in the heating mode, kfan (i) is the air quantity correction coefficient of the fans of the ith indoor units in the M indoor units, S is the number of the indoor units in the heating mode, and HP _HToff (i) The heating power of the ith indoor unit in the S indoor units in the heating mode is M-S, and the number of indoor units which are not in the heating mode in the M indoor units is HP _Hoff(i) The method comprises the steps that heating power of an ith indoor unit in M-S indoor units which are not in a heating mode is taken as a prediction temperature value of an environment where N compressors are located, nout is a constant, and khp is a temperature correction coefficient of an exhaust temperature value of the N compressors;

acquiring a frequency correction coefficient, and correcting the initial operating frequency of each compressor based on the frequency correction coefficient to obtain the target operating frequency of each compressor;

2. The method of claim 1, wherein the M indoor units comprise Z water units, Z being a positive integer, the water units being indoor units using water as a refrigeration medium; when the multi-split air conditioning system is in a heating mode, the operation data of the multi-split air conditioning system comprise:

the number of each indoor unit in the refrigeration mode, the refrigeration power of each water machine in the Z water machines the number of each indoor unit in the heating mode, the exhaust temperature value of each compressor, the heating power of each water machine in the Z water machines the heating power of the indoor unit in the heating mode of the M indoor units, the heating power of the water unit in the heating mode of the Z water units, the heating power of the indoor unit not in the heating mode of the M indoor units, and the heating power of the water unit not in the heating mode of the Z water units.

3. The method of claim 2, wherein the determining an initial operating frequency for each of the N compressors based on the operating data of the multi-split air conditioning system satisfies the following formula:

wherein Fc (N) is the initial operating frequency of any one of the N compressors, HP _Con(i) Kc (i) is the temperature correction coefficient HPw of the ith indoor unit in the M indoor units, wherein Kc (i) is the number of the ith indoor unit in the M indoor units in the refrigeration mode _Con(i) For the heating power of the ith water machine in the heating mode in the Z water machines, kwc (i) is the temperature correction coefficient of the ith water machine in the Z water machines, KT is the heating control constant, KPd is the difference between the maximum exhaust temperature value and the minimum exhaust temperature value in the exhaust temperature values of each compressor, and HP _Hon(i) Kh (i) is the number of the ith indoor unit in the M indoor units in the heating mode, kfan (i) is the air quantity correction coefficient of the fan of the ith indoor unit in the M indoor units, and HPw _Hon(i) The refrigeration power of the ith water machine in the heating mode in the Z water machines is Kwh (i) is the water temperature correction coefficient of the ith water machine in the Z water machines, and S is the current heating mode in the M indoor machines The number of indoor units (HP) _HToff(i) For the heating power of the ith indoor unit in S indoor units currently in the heating mode, HPw _HToff(i) For the heating power of the ith water machine in the Z water machines, M-S is the number of indoor machines which are not in the heating mode in the M indoor machines, and HP _Hoff(i) Is HPw for heating power of the ith indoor unit in M-S indoor units which are not in heating mode _Hoff(i) And (3) for heating power of the ith water machine which is not in a heating mode in the Z water machines, khp is a temperature correction coefficient of the exhaust temperature values of the N compressors, and KT is a heating control constant.

4. A method according to any one of claims 1 to 3, wherein the obtaining the frequency correction coefficient comprises:

receiving a touch instruction of a user;

and responding to a touch instruction of a user, and acquiring the frequency correction coefficient.

5. A determining apparatus, comprising:

the communication unit is used for acquiring operation data of the multi-split air conditioning system through the near field communication NFC module, the multi-split air conditioning system comprises N compressors and M indoor units, each indoor unit comprises a fan, N is a positive integer, and M is an integer larger than 1; when the multi-split air conditioning system is in a refrigeration mode, the operation data of the multi-split air conditioning system comprise: the number of indoor units in the heating mode, the number of indoor units in the cooling mode, the heating power of indoor units in the heating mode, the heating power of indoor units not in the heating mode and the exhaust temperature value of each compressor;

The processing unit is used for determining the initial operating frequency of each compressor in the N compressors based on the operating data of the multi-split air conditioning system; the initial operation frequency of each compressor in the N compressors is determined based on the operation data of the multi-split air conditioning system, and the following formula is satisfied:

wherein Fc (N) is the initial operating frequency of any one of the N compressors, ncol is the refrigeration constant, HP _Con(i) Kc (i) is the temperature correction coefficient of the ith indoor unit in the M indoor units, KT is the heating control constant, KPd is the difference between the maximum and minimum exhaust temperature values in the exhaust temperature values of a plurality of compressors, NHot is the heating constant, HP _Hon(i) Kh (i) is the number of the ith indoor units in the M indoor units in the heating mode, kfan (i) is the air quantity correction coefficient of the fans of the ith indoor units in the M indoor units, S is the number of the indoor units in the heating mode, and HP _HToff(i) The heating power of the ith indoor unit in the S indoor units in the heating mode is M-S, and the number of indoor units which are not in the heating mode in the M indoor units is HP _Hoff(i) The method comprises the steps that heating power of an ith indoor unit in M-S indoor units which are not in a heating mode is taken as a prediction temperature value of an environment where N compressors are located, nout is a constant, and khp is a temperature correction coefficient of an exhaust temperature value of the N compressors;

the communication unit is further configured to: acquiring a frequency correction coefficient, and correcting the initial operating frequency of each compressor based on the frequency correction coefficient to obtain the target operating frequency of each compressor; the method comprises the steps of,

6. A determining apparatus, comprising: a processor and a memory;

the memory stores instructions executable by the processor;

the processor is configured to, when executing the instructions, cause the determining means to implement the method of any one of claims 1 to 4.

7. A computer readable storage medium comprising computer instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 4.