CN115111825A

CN115111825A - Method and device for determining running frequency of compressor

Info

Publication number: CN115111825A
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: 2022-09-27
Anticipated expiration: 2042-06-20
Also published as: CN115111825B

Abstract

The embodiment of the application provides a method and a device for determining the running frequency of a compressor, relates to the technical field of air conditioners, and is used for improving the efficiency of determining the running frequency of the compressor. The method is applied to terminal equipment with a near field communication module, and comprises the following steps: the method comprises the steps that operation data of a multi-split air-conditioning system are obtained through a near field communication module, 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 then sending a control instruction to the multi-split air conditioning system, wherein the control instruction comprises the target operation frequency of each compressor, and the control instruction is used for instructing each compressor in the N compressors to work at the corresponding target operation frequency.

Description

Method and device for determining running 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

With the development of economic society, a multi-split air conditioning system which is commonly called as 'one split multiple' is widely used in various places such as entertainment, home and work.

At present, for determining the operation frequency of a compressor in a multi-split air conditioning system, a Micro Control Unit (MCU) of the multi-split air conditioning system determines and applies the operation frequency of the compressor according to operation data of the multi-split air conditioning system. However, the efficiency of determining the operation frequency of the compressor by the MCU of the multi-split air conditioning system is low, which causes the operation frequency of the compressor of the multi-split air conditioning system to be unable to be adjusted in time, so that the temperature of the environment where the user is located under the operation frequency of the compressor determined by the MCU of the multi-split air conditioning system cannot meet the user's demand for temperature in real time, which affects the user's experience.

Disclosure of Invention

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

In order to achieve the purpose, the following technical scheme is adopted in the application.

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 (NFC) module, and the method includes: the method comprises the steps that operation data of a multi-split air-conditioning system are obtained through an NFC module, the multi-split air-conditioning system comprises N compressors, and N is a positive integer; determining the initial operating frequency of each compressor in the N compressors based on the 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 the target operation frequency of each compressor, and the control instruction is used for indicating each compressor in the N compressors to work at the corresponding target operation frequency.

The technical scheme provided by the application at least brings the following beneficial effects: according to the technical scheme, the terminal equipment can rapidly acquire the operation data of the multi-split air-conditioning system through the NFC module, and then 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 computing capability of the terminal equipment 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, the efficiency for determining the operation frequency of the compressor can be improved, and meanwhile the operation pressure of the MCU of the multi-split air-conditioning system is reduced. And after the initial operating frequency of each compressor is determined, the initial operating frequency of each compressor is corrected according to the frequency correction coefficient, so that the temperature of a room where a user is located can meet the requirements of the user based on the target operating frequency of each compressor, and the use experience of the user is favorably improved.

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

In some embodiments, an initial operating frequency of each of the N compressors is determined based on the operating data of the multi-split air conditioning system, and satisfies 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 number of the ith indoor unit in the M indoor units in a refrigerating mode is Kc (i), the temperature correction coefficient of the ith indoor unit in the M indoor units is Kc (i), KT is a heating control constant, KPd is the difference value between the minimum exhaust temperature value and the exhaust temperature value in the exhaust temperature values of each compressor, NHot is a heating constant, and HP is the temperature of the compressor in the refrigerating mode _Hon(i) The number of the ith indoor unit in the M indoor units in the heating mode is Kh (i), the number correction coefficient of the ith indoor unit in the M indoor units is Kfan (i), the air volume correction coefficient of a fan of the ith indoor unit in the M indoor units is Kfan (i), S is the number of the indoor units in the heating mode in the M indoor units, and HP is _HToff(i) The heating power of the ith indoor unit in S indoor units in the heating mode, M-S is the number of the indoor units which are not in the heating mode in M indoor units, and HP _Hoff(i) The heating power of the ith indoor unit in the M-S indoor units which are not in the heating mode is KTout is the predicted temperature value of the environment where the N compressors are located, Nout is a constant, and khp is the temperature correction coefficient of the exhaust temperature values of the N compressors.

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

the number of the indoor units in the cooling mode, the cooling power of each water machine in the Z water machines, the number of the indoor units 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 units in the heating mode in the M indoor units, the heating power of the water machines in the heating mode in the Z water machines, the heating power of the indoor units not in the heating mode in the M indoor units, and the heating power of the water machines not in the heating mode in the Z water machines.

wherein Fc (N) is the initial operating frequency, HP, of any of the N compressors _Con(i) Kc (i) is the temperature correction coefficient of the ith indoor unit in the M indoor units, HPw _Con(i) Heating power of the ith water machine in a heating mode in the Z water machines, Kwc (i) is a temperature correction coefficient of the ith water machine in the Z water machines, KT is a heating control constant, KPd is a difference value between a maximum exhaust temperature value and a minimum exhaust temperature value in exhaust temperature values of each compressor, and HP is _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 volume correction coefficient of the ith indoor unit in the M indoor units, and HPw _Hon(i) Kwh (i) is a water temperature correction coefficient of the ith water machine in the Z water machines, S is the number of the indoor machines in the heating mode in the M indoor machines, and HP _HToff(i) For the heating power of the ith indoor unit of the S indoor units currently in the heating mode, HPw _HToff(i) The heating power of the ith water machine in Z water machines is provided, and M-S is provided for M indoor machinesNumber of indoor units not in heating mode, HP _Hoff(i) Heating power of the i-th indoor unit among the M-S indoor units not in the heating mode, HPw _Hoff(i) The heating power of the ith water machine which is not in the heating mode in the Z water machines is determined, 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 factor comprises:

receiving an operation instruction of a user;

the frequency correction coefficient is determined in response to an operation instruction of a user.

In a second aspect, an embodiment of the present application provides a determining apparatus, including: the communication unit is used for acquiring the operation data of the multi-split air-conditioning system through the NFC module, 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; a communication unit 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; and sending a control instruction to the multi-split air conditioning system, wherein the control instruction comprises a target operation frequency of each compressor, and the control instruction is used for instructing each compressor in the N compressors to work at the corresponding target operation 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 adapted to store computer program code comprising computer instructions which, when executed by the one or more processors, cause the determining means to perform any of the methods of determining an operating frequency of a compressor as provided in the first aspect above.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, which includes computer instructions, when the computer instructions are executed on a computer, the computer executes any one of the methods for determining an operating frequency of a compressor provided in the first aspect.

In a fifth aspect, embodiments of the present invention provide a computer program product, which is directly loadable into a memory and contains software codes, and which, when loaded and executed by a computer, is capable of implementing any one of the methods for determining an operating frequency of a compressor as provided in the first aspect.

For the beneficial effects of the second aspect to the fifth aspect in the present application, reference may be made to the beneficial effect analysis of the first aspect, and details are not described here.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

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

fig. 2 is a schematic diagram illustrating a setting position of an electronic expansion valve according to an embodiment of the present disclosure;

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

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

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

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

fig. 7 is a schematic flowchart of a method for determining an 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 disclosure;

fig. 9 is an interaction diagram of an outdoor unit, an NFC module, and a terminal device according to an embodiment of the present disclosure;

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

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

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the present invention, it is to 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 those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

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

In the related art, 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 the MCU of the multi-split air conditioning system controls the compressor of the multi-split air conditioning system to operate at the corresponding operation frequency. However, the existing multi-split air conditioning system may include N compressors, determination of the operating frequency of the N compressors involves a complex algorithm, and the operational capability of the MCU of the multi-split air conditioning system is limited, which results in low efficiency of determining the operating frequency of the compressor by the MCU of the multi-split air conditioning system, and further causes untimely adjustment of the operating frequency of the compressor of the multi-split air conditioning system, so that the temperature of the environment where the user is located under the operating frequency of the compressor determined by the MCU of the multi-split air conditioning system cannot meet the temperature requirement of the user in real time, and the use experience of the user is affected.

Based on this, an embodiment of the present application provides a method for determining an operating frequency of a compressor, where an NFC module is configured on a multi-split air conditioning system, so that a terminal device having the NFC module can obtain operating data of the multi-split air conditioning system through the NFC module, and then the terminal device having the NFC module determines the operating frequency of the compressor of the multi-split air conditioning system according to the operating data of the multi-split air conditioning system. It can be understood that the operational capability of the terminal device is higher than that of the MCU of the multi-split air-conditioning system, the terminal device is combined with the operational data of the multi-split air-conditioning system to determine the operating frequency of the compressor of the multi-split air-conditioning system, the operating frequency of the compressor of the multi-split air-conditioning system can be rapidly determined, the efficiency for determining the operating frequency of the compressor of the multi-split air-conditioning system is improved, the operating 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 operating frequency of the compressor of the multi-split air-conditioning system can meet the temperature requirement of the user in real time, the MCU of the multi-split air-conditioning system can give up a complex algorithm to determine the operating frequency of the compressor, and the operational 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 different types of multi-split air conditioning systems, and the different types of multi-split air conditioning systems are illustrated by taking the schematic structural diagram of the multi-split air conditioning system shown in fig. 1 as an example.

As shown in fig. 1, the multi-split air conditioning system 10 includes N outdoor units 11, a throttling 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 a case where the multi-split air conditioning system 10 includes 1 outdoor unit, but does not represent 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 is transported in a pipeline by using refrigerant containing fluorine or not containing fluorine as a refrigerant.

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

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

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

For example, as shown in fig. 2, to provide a schematic diagram of an installation position of an electronic expansion valve according to an exemplary embodiment of the present application, the electronic expansion valve 121 may be installed on the liquid pipe 16, a throttle valve may be further installed on the liquid pipe 16, one end of the liquid pipe 16 may be connected to the indoor heat exchanger 131 described below, and similarly, one end of the gas pipe 15 may also be connected to the indoor heat exchanger 131 described below.

For any outdoor unit 11 of the plurality of outdoor units 11, the outdoor unit 11 is usually installed outdoors to assist heat exchange in indoor environment.

The throttling device 12 is also used to regulate the refrigerant flow. The electronic expansion valves 121 are used for adjusting the supply amount of the refrigerant in the pipes, and the electronic expansion valves 121 may be independent of the outdoor units 11 (as shown in fig. 1) or may belong to a part of the outdoor units 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 disclosure. The indoor units 13 may be indoor on-hook machines or indoor cabinet machines, which is not limited in this embodiment of the 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 specifically limit the embodiment of the present invention.

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

As shown in fig. 4, the multi-split air conditioning system includes an outdoor unit 11, a throttling device 12, a plurality of indoor units 13, and a controller 14 (not shown in fig. 4). It should be noted that the schematic diagram of the refrigeration cycle of the multi-split air-conditioning system shown in fig. 4 is exemplified by the multi-split air-conditioning system having one outdoor unit 11, but 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 the 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 with variable capacity that performs rotational speed control by an inverter.

In some embodiments, the outdoor heat exchanger 112 is connected to the accumulator 113 at one end via a four-way valve 114 and to the throttling device 12 at the other end. The outdoor heat exchanger 112 has a first inlet and outlet for allowing 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 refrigerant to flow between the outdoor heat exchanger 112 and the expansion device 12. The outdoor heat exchanger 112 exchanges heat between the outdoor air and the heat cooler 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 cooling cycle. For convenience of description, the outdoor heat exchanger 112 is taken as an example of a condenser.

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

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

The flow direction of the refrigerant in the refrigeration cycle principle 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 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 passing liquid refrigerant between the electronic expansion valve 121 and a fourth inlet and outlet for passing gas refrigerant between the discharge port of the compressor 111. The indoor heat exchanger 131 exchanges heat between the refrigerant flowing through the heat transfer pipe connected between the third inlet and the fourth inlet and the indoor air. 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 the following.

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 between the refrigerant flowing in the heat transfer pipe between the third inlet and the fourth inlet and the indoor air.

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

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

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

In the embodiment shown in the present application, the controller 14 is a device capable of generating an operation control signal according to the command operation code and the timing signal, and instructing the multi-split air conditioning system to execute the control command. For example, the controller may be a Central Processing Unit (CPU), a general purpose processor Network (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The controller may also be other devices with processing functions, such as a circuit, a device, or a software module, which is not limited in any way by the embodiments of the present application.

In some embodiments, the controller 14 may be an MCU. The MCU is also called a single chip Microcomputer (MCU) or a single chip Microcomputer (MCU), which properly reduces the frequency and specification of a Central Processing Unit (CPU), and integrates peripheral interfaces such as a memory, a counter, a USB, an a/D converter, a UART, a PLC, a DMA, and even an LCD driving circuit on a single chip to form a chip-level computer, thereby performing different combination control for different applications.

In addition, the controller 14 may be configured to control operations of various components within the multi-split air conditioning system 10, so 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 further attached with a remote controller having a function of communicating 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 the above-mentioned embodiment shown in fig. 4 is an example in which the throttling device 12 is independent from the plurality of indoor units 13, and if the throttling device 12 is located inside the plurality of indoor units 13, the above refrigeration cycle principle of the multi-split air conditioning system is still applicable, and will not be described in detail below.

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 module 104, communicator 105, and memory 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 exhaust port of the compressor 111 for detecting an exhaust port temperature value of the compressor 111 and sending the detected exhaust 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 sending 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 sending 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, for example, a terminal device having the NFC module. Among them, the NFC technology is a short-range high-frequency radio technology, which operates at a frequency of 13.56 megahertz (MHz). The NFC technology is integrated and evolved from a non-contact Radio Frequency Identification (RFID) technology and an interconnection technology, and combines functions of an inductive card reader, an inductive card, and a point-to-point technology on a single chip, so as to perform identification and data exchange with compatible devices in a short distance.

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

In some embodiments, the hardware structure of the NFC module consists essentially of three parts: an electrically erasable programmable read-only memory (EEPROM), a register, and a Static Random Access Memory (SRAM).

In some embodiments, communicator 105 is connected to 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 (WIFI) module, a GPS module, and the like. Taking the RF module as an example, the RF module can be used for receiving and transmitting signals, and particularly, transmitting the received information to the controller 14 for processing; in addition, the signal generated by the controller 14 is sent out. In general, the RF circuit may include, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.

In some embodiments, the multi-split air conditioning system 10 may also transmit its own operation data to the server through the communicator 105, so that the server may calculate operation parameters of each component of the multi-split air conditioning system 10 during operation according to the operation data of the multi-split air conditioning system 10, and further transmit the calculated operation parameters to the multi-split air conditioning system 10. And the controller 14 controls the various components in the multi-split air conditioning system 10 to operate according to the operating parameters calculated by the server.

The server may be a single server, or may be a server cluster including a plurality of servers. In some embodiments, the server cluster may also be a distributed cluster. In some embodiments, the service area may also be a cloud server, and the specific type of the server is not limited in the embodiments of the present application.

In some embodiments, memory 106 may be used to store software programs and data. The controller 14 performs various functions of the multi-split air conditioning system 10 and data processing by executing 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 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 according to an embodiment of the present application.

Those skilled in the art will appreciate that the hardware configuration shown in fig. 5 does not constitute a limitation of the multi-split air conditioning system, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

Fig. 6 is a schematic diagram illustrating interaction between 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 of the NFC module 104, the terminal device 300 may establish a communication connection with the controller 14 of the multi-split air conditioning system 10 through the NFC module.

It should be noted 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 (PC), a Personal Digital Assistant (PDA), a smart watch, a netbook, a wearable electronic device, an Augmented Reality (AR) device, a Virtual Reality (VR) device, a robot, and the like, and the specific form of the terminal device 300 is not particularly limited in the present application.

For example, taking the terminal device 300 as a mobile phone, a user may download an multi-split air conditioning system control APP on the mobile phone, and the multi-split air conditioning system control APP may be used to manage the multi-split air conditioning system. Further, the user may select the on-line device, i.e., the multi-split air conditioning system 10, and select a control function to be performed on the multi-split air conditioning system 10 among 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). If it is detected that the user clicks a start button for the multi-split air-conditioning system 10 in the smart home APP, the mobile phone may send a start instruction to the multi-split air-conditioning system 10, so that the multi-split air-conditioning system 10 responds to the start instruction to start up.

The embodiments provided in the present application will be described in detail below with reference to the accompanying drawings.

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 having an NFC module, and the method may be applied to a debugging 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, and 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, a user may control the APP to issue a debugging instruction to the multi-split air conditioning system through the multi-split air conditioning system downloaded from 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 the debugging mode, the terminal equipment receives the 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 multi-split air conditioning system downloaded through the terminal device controls the APP 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 the 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 including one compressor, that is, the multi-split air conditioning system includes N compressors.

As can be understood, 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 the indoor units in the heating mode, the number of the indoor units in the cooling mode, the heating power of the indoor units in the heating mode in the M indoor units, the heating power of the indoor units not in the heating mode in the M indoor units and the exhaust temperature value of each compressor.

When the multi-split air-conditioning system is in a heating mode, the operation data of the multi-split air-conditioning system comprises: the number of the indoor units in the cooling mode, the cooling power of each water machine in the Z water machines, the number of the indoor units 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 units in the heating mode in the M indoor units, the heating power of the water machines in the heating mode in the Z water machines, the heating power of the indoor units not in the heating mode in the M indoor units, and the heating power of the water machines not in the heating mode in the Z water machines.

It can be understood that the multi-split air conditioning system needs to provide cooling services or heating services to users in multiple rooms, and different users have different requirements for temperature, so that the multi-split air conditioning system may provide cooling services or heating services to different rooms simultaneously in the working process, that is, the multi-split air conditioning system may provide cooling services to some rooms when in the heating mode, so that 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 unit in the heating mode among 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 indoor units in the cooling mode, the cooling power of each water machine in 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 outlet air 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 operation frequency of each compressor in the N compressors based on the operation data of the multi-split air conditioning system.

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

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

KT＝-0.07*T _amin +1.5 equation (2)

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

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

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

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

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

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

Therefore, the terminal device can obtain the initial operating frequency of each compressor of the N compressors of the multi-split air conditioning system in the cooling mode through the formula (1).

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

wherein HP _Con(i) Kc (i) is the temperature correction coefficient of the ith indoor unit in the M indoor units, HPw _Con(i) Heating power of the ith water machine in a heating mode in the Z water machines, Kwc (i) is a temperature correction coefficient of the ith water machine in the Z water machines, KT is a heating control constant, KPd is a difference value between a maximum exhaust temperature value and a minimum exhaust temperature value in exhaust temperature values of each compressor, and HP is _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 volume correction coefficient of the ith indoor unit in the M indoor units, and HPw _Hon(i) Kwh (i) is the water temperature correction coefficient of the ith water machine in the Z water machines, S is the number of the indoor machines in the heating mode in M indoor machines, and HP _HToff(i) For the heating power of the i-th indoor unit among the S indoor units in the heating mode, HPw _Hoff(i) Heating power of ith water machine in Z water machinesM-S is the number of indoor units not in heating mode among the M indoor units, HP _Hoff(i) Heating power of the i-th indoor unit among the M-S indoor units not in the heating mode, HPw _Hoff(i) The heating power of the ith water machine which is not in the heating mode in the Z water machines is determined, 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 may 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 equation (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 in the cooling mode of the multi-split air-conditioning system through the above formula (1) or obtains the initial operating frequency of each compressor in the heating mode of the multi-split air-conditioning system 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 checking the initial operating frequency of each compressor, a user can select the function of the multi-split air conditioning system by selecting the display of the touch terminal equipment, and then the terminal equipment receives a touch instruction of the user.

And responding to a touch instruction of a user, and determining a frequency correction coefficient by the terminal equipment 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 relationship between the functions of the multi-split air conditioning system and the frequency correction coefficients may be as shown in table 1 below.

TABLE 1

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

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

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

It can be understood that different users have different requirements for temperature, and for a 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 to obtain the target operating frequency of each compressor, so that the temperature of the space where the user is located when each compressor operates 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 user considers that the operating frequency of each compressor calculated by the terminal device is appropriate and does not need to adjust. 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 user considers that the operation frequency of each compressor calculated by the terminal device is large, and reduction processing is required.

In some embodiments, after obtaining the function of the multi-split air conditioning system selected by the user, 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 terminal device may determine the frequency correction coefficient of the multi-split air conditioning system directly according to the previously stored function of the multi-split air conditioning system, and the terminal device does not need to obtain 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.

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

After the target operation frequency of each compressor is determined, the terminal device can send a control instruction to the multi-split air conditioning system through the NFC module, the control instruction comprises the target operation frequency of each compressor, and the control instruction is used for indicating each compressor in the 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 advantageous effects: according to the technical scheme, the terminal equipment can rapidly acquire the operation data of the multi-split air-conditioning system through the NFC module, and then 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 computing capability of the terminal equipment 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, the efficiency for determining the operation frequency of the compressor can be improved, and meanwhile the operation pressure of the MCU of the multi-split air-conditioning system is reduced. And after the initial operating frequency of each compressor is determined, the initial operating frequency of each compressor is corrected according to the frequency correction coefficient, so that the temperature of a room where a user is located can meet the requirements of the user based on the target operating frequency of each compressor, and the use experience of the user is favorably improved.

As a possible implementation manner, the controller of the multi-split air conditioning system may further access the server through a narrow band internet of things (NB-IoT) to send the operation data of the multi-split air conditioning system to the server, the server determines the target operation frequency of each compressor of the multi-split air conditioning system in different modes according to the formula (1) or the formula (5), and then sends the determined target operation frequency of each compressor to the multi-split air conditioning system through the NB-IoT to control each compressor of the multi-split air conditioning system to operate at the corresponding target operation frequency.

It can be understood that the operational capability of the server is higher than that of the MCU of the multi-split air conditioning system, and the target operating 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 is improved.

In some embodiments, fig. 8 is a schematic view illustrating interaction between an NFC module of a terminal device and an NFC module of a multi-split air conditioning system according to an exemplary embodiment of the present disclosure.

As can be seen from the above description of the NFC module, the NFC module includes an EEPROM, a register, and an SRAM. In order to reduce the number of writing operations to the EEPROM, SRAM is used as much as possible. It can be understood that if real-time reading is needed, data are written into the EEPROM of the NFC module by the controller of the multi-split air conditioning system at each time, the terminal device reads the data in the EEPROM of the NFC module, the service life of the NFC module is easily reduced, and the real-time performance of reading and writing is not high at the same time, so that the embodiment of the present application provides an interactive schematic diagram of the NFC module of the terminal device and the NFC module of the multi-split air conditioning system as shown in fig. 8.

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 the SRAM data format code is written, the following situations may be included:

case 1, input. The NFC module of the terminal equipment can read SRAM data, and then the read data are 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 are 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 so that a user can configure the functions of the multi-split air-conditioning system, and then data are written into the SRAM and transmitted to the SRAM of the NFC module of the multi-split air-conditioning system so that 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 then reads the SRAM data format code, the following situations may be included:

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

Case 2, output. And the NFC module of the multi-split air conditioning system can be used for electrically erasable programmable read-only memory (EEPROM) of data.

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

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

the type 1 real-time display of the operation data of the multi-split air conditioning system has a format code of 0x 01.

And the format code of EEPROM data display of the NFC module of the type 2 multi-split air conditioning system is 0x 02.

Type 3, function selection of the multi-split air conditioning system, and format code is 0x 03.

Only if the format code is 0x02, the NFC module of the terminal device reads the EEPROM data command, and at this time, the master control MCU of the multi-split air conditioning system writes the EEPROM, so that the reading and writing are performed in an asynchronous operation mode.

A master-slave mode structure is adopted, a communication protocol adopts a 16-system data format code, a 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-up information; 22H: reading function information; 23H: reading the manufacturing code information; 24H: reading connection topology information; 25H: reading an alarm history; 26H: reading the accumulated running time of the compressor; 27H: reading a brand of a multi-split air conditioning system; 31H, 31H: writing dial-up information; 32H, 32H: writing function information; 33H: and writing an unlocking password.

In some embodiments, as shown in fig. 9, an interaction diagram of an outdoor unit-NFC module-terminal device provided in the embodiments of the present application is shown.

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, the main control substrate comprises an MCU main control chip, and the other peripheral devices comprise temperature sensors. The NFC module includes the function board, and the function board includes MCU main control chip.

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

As shown in fig. 10, an embodiment of the present application provides a determining apparatus for performing the method for determining the operating frequency of the compressor shown in fig. 8, where the determining apparatus 2000 includes: 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.

And a processing unit 2002 for determining an initial operating frequency of each of the N compressors based on the operation data of the multi-split air conditioning system.

A communication unit 2001, 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; and the number of the first and second groups,

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

The elements of FIG. 10 may also be referred to as modules, and for example, a processing element may be referred to as a processing module.

The respective units in fig. 10, if implemented in the form of software functional modules and sold or used as independent products, may be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be substantially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in a software product, which is stored in a storage medium and includes several instructions, so that a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) executes all or part of the steps of the method described in the embodiments of the present application. A storage medium storing a computer software product comprising: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

As shown in fig. 11, the determining apparatus 3000 includes a processor 3001, and optionally, a memory 3002 and a communication interface 3003, which are 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 (CPU), a general purpose processor Network Processor (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The processor 3001 may also be any other means having a processing function, such as a circuit, a device, or a software module. The processor 3001 may also include multiple 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 that process data (e.g., computer program instructions).

Memory 3002 may be a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that may store information and instructions, but is not limited to, electrically erasable programmable read-only memory (EEPROM), compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, 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. The memory 3002 may be separate or integrated with the processor 3001. The memory 3002 may have computer program code embodied therein. The processor 3001 is configured to execute the computer program code stored in the memory 3002, thereby implementing the methods provided by the embodiments of the present application.

Communication interface 3003 may be used to communicate with other devices or communication networks (e.g., ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc.). Communication interface 3003 may be a module, circuitry, transceiver, or any device capable of enabling communication.

The bus 3004 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 3004 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 11, but this is not intended to represent only one bus or type of bus.

The embodiment of the present application further provides a computer-readable storage medium, which includes computer-executable instructions, and when the computer-readable storage medium is run on a computer, the computer is caused to execute any one of the methods provided by the above embodiments.

The embodiments of the present application also provide a computer program product containing instructions for executing a computer, which when executed on a computer, causes the computer to perform any one of the methods provided by the above embodiments.

An embodiment of the present application further provides a chip, including: a processor coupled to the memory through the interface, and an interface, when the processor executes the computer program or the computer execution instructions in the memory, the processor causes any one of the methods provided by the above embodiments to be performed.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, 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. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated when the computer-executable instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer executable instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer executable instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

While the present application has been described 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 review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "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 present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for determining the running frequency of a compressor is applied to a terminal device with a Near Field Communication (NFC) module, and comprises the following steps:

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 N is a positive integer;

determining an initial operating frequency of each of the N compressors based on the 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 operation frequency of each compressor, and the control instruction is used for indicating each compressor in the N compressors to work at the corresponding target operation frequency.

2. The method of claim 1, wherein the multi-split air conditioning system further comprises M indoor units, M being an integer greater than 1; when the multi-split air conditioning system is in a cooling mode, the operation data of the multi-split air conditioning system comprises:

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

3. The method of claim 2, wherein each of the indoor units includes a fan, and wherein the initial operating frequency of each of the N compressors is determined based on the operating data of the multi-split air conditioning system, and satisfies the following equation:

wherein Fc (N) is the initial operating frequency of any one of the N compressors, Ncol is the refrigeration constant, HP _Con(i) For the number of the ith indoor unit in the M indoor units in a cooling mode, Kc (i) is a temperature correction coefficient of the ith indoor unit in the M indoor units, KT is a heating control constant, KPd is a difference value between a maximum exhaust temperature value and a minimum exhaust temperature value in exhaust temperature values of a plurality of compressors, NHot is a heating constant, HP is a temperature value of the compressor, and the temperature of the compressor is controlled by the temperature correction coefficient _Hon(i) Kh (i) is the matching number correction coefficient of the ith indoor unit in the M indoor units in the heating mode,kfan (i) is the air volume correction coefficient of the fan of the ith indoor unit in the M indoor units, S is the number of the indoor units in the heating mode in the M indoor units, and HP is _HToff(i) The heating power of the ith indoor unit in S indoor units in the heating mode is obtained, M-S is the number of the indoor units which are not in the heating mode in the M indoor units, and HP is _Hoff(i) The heating power of the ith indoor unit in the M-S indoor units which are not in the heating mode is determined, KTout is a predicted temperature value of the environment where the N compressors are located, Nout is a constant, and khp is a temperature correction coefficient of the exhaust temperature values of the N compressors.

4. The method according to claim 1, wherein the multi-split air conditioning system further comprises M indoor units, M is an integer greater than 1, the M indoor units comprise Z water machines, Z is a positive integer, and the water machines are indoor units using water as a refrigerating medium; when the multi-split air-conditioning system is in a heating mode, the operation data of the multi-split air-conditioning system comprises:

the number of the indoor machines in a cooling mode, the cooling power of each water machine in the Z water machines, the number of the indoor machines in a 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 machines in the heating mode in the M indoor machines, the heating power of the water machines in the heating mode in the Z water machines, the heating power of the indoor machines not in the heating mode in the M indoor machines, and the heating power of the water machines not in the heating mode in the Z water machines.

5. The method as claimed in claim 4, wherein the determining of the initial operating frequency of each of the N compressors based on the operation data of the multi-split air conditioning system satisfies the following equation:

wherein Fc (N) is an initial operating frequency, HP, of any one of the N compressors _Con(i) Kc (i) is the number of ith indoor units in the M indoor units in a cooling mode, and is the temperature correction coefficient of the ith indoor units in the M indoor units, HPw _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 a heating control constant, KPd is the difference value between the maximum exhaust temperature value and the minimum exhaust temperature value in the exhaust temperature values of each compressor, 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 volume correction coefficient of the ith indoor unit in the M indoor units, and Kfan (i) is the air volume correction coefficient of the fan of the ith indoor unit in the M indoor units, HPw _Hon(i) Kwh (i) is the water temperature correction coefficient of the ith water machine in the Z water machines, S is the number of the indoor machines in the heating mode in the M indoor machines, and HP _HToff(i) For the heating power of the i-th indoor unit of the S indoor units currently in the heating mode, HPw _HToff(i) The heating power of the ith water machine in the Z water machines, M-S is the number of the indoor machines which are not in the heating mode in the M indoor machines, and HP _Hoff(i) Heating power of the i-th indoor unit among the M-S indoor units not in the heating mode, HPw _Hoff(i) And for the heating power of the ith water machine which is not in the 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.

6. The method according to any one of claims 1 to 5, 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.

7. A determination apparatus, comprising:

the communication unit is used for acquiring the 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 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 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; and the number of the first and second groups,

8. The apparatus of claim 7, wherein the multi-split air conditioning system further comprises M indoor units, M being an integer greater than 1; when the multi-split air conditioning system is in a cooling mode, the operation data of the multi-split air conditioning system comprises: the number of the indoor units in the heating mode, the number of the indoor units in the cooling mode, the heating power of the indoor unit in the heating mode in the M indoor units, the heating power of the indoor unit not in the heating mode in the M indoor units, and the exhaust temperature value of each compressor.

9. A determination 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 of claims 1 to 6.

10. A computer-readable storage medium comprising computer instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 6.