A central air conditioning system and a control method thereof

Abstract

A central air conditioning system and a control method thereof, the system comprising an outdoor unit (1), an indoor unit (2), a wire controller (3), a centralized controller (4), a cloud server (5), a user terminal (6) and a Fahrenheit conversion module (7); the Fahrenheit conversion module (7) is used to obtain the current transmission Celsius temperature data from the system, convert the current transmission Celsius temperature data into first Fahrenheit temperature data by using the Fahrenheit Celsius standard conversion formula, and then send the target Fahrenheit temperature data obtained by rounding off the first Fahrenheit temperature data to the wire controller (3) and / or the user terminal (6).

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202110069767.X, filed on January 19, 2021, entitled "A Central Air Conditioning System and its Control Method", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of air conditioner technology, and in particular to a central air conditioning system and its control method. Background Technology

[0004] The Fahrenheit and Celsius scales are two major international standards for measuring temperature. Central air conditioning systems, when used in different regions, need to adopt the locally accepted temperature scale, necessitating a solution that allows central air conditioning systems to be applicable in different regions. Summary of the Invention

[0005] This application provides a central air conditioning system, including:

[0006] The system includes an outdoor unit, an indoor unit, a wired controller, a central controller, a cloud server, and a user terminal; both the wired controller and the central controller are connected to the indoor unit, the central controller is interconnected with the cloud server, and the user terminal is interconnected with the cloud server.

[0007] It also includes: a Fahrenheit conversion module, used to obtain the currently transmitted Celsius temperature data from the system, convert the currently transmitted Celsius temperature data into first Fahrenheit temperature data using the Fahrenheit-Celsius standard conversion formula, and then round the first Fahrenheit temperature data to obtain the target Fahrenheit temperature data before sending it to the wired controller and / or the user terminal.

[0008] This application embodiment also provides a control method for a central air conditioning system, the central air conditioning system including: an outdoor unit, an indoor unit, a wired controller, a central controller, a cloud server, and a user terminal; the wired controller and the central controller are both connected to the indoor unit, the central controller is interconnected with the cloud server, and the user terminal is interconnected with the cloud server; the method includes: acquiring the currently transmitted Celsius temperature data inside the central air conditioning system; converting the currently transmitted Celsius temperature data into first Fahrenheit temperature data using a Fahrenheit-Celsius standard conversion formula; rounding the first Fahrenheit temperature data to obtain target Fahrenheit temperature data; and sending the target Fahrenheit temperature data to the wired controller and / or the user terminal.

[0009] This application also relates to a computer-readable storage medium storing computer-executable instructions, which are executed by a processor using the central air conditioning control method. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A system architecture diagram of a central air conditioning system provided in the embodiments of this application;

[0012] Figure 2 This is one of the system functional architecture diagrams of the central air conditioning system proposed in this application;

[0013] Figure 3 A flowchart of the control method for the central air conditioning system proposed in this application;

[0014] Figure 4 This is the second flowchart of the control method for the central air conditioning system proposed in this application;

[0015] Figure 5 This is the second system functional architecture diagram of the central air conditioning system proposed in this application. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] like Figure 1The central air conditioning system shown includes an outdoor unit, an indoor unit, a wired controller, a central controller, a cloud server, and a user terminal. When a user needs to operate the temperature in Fahrenheit, the system needs to synchronously switch the temperature unit on both the wired controller and the user terminal. Typically, the temperature setting or display on the wired controller of a central air conditioning system is adjusted up or down in 0.5-degree or 1-degree increments, and in most cases, Fahrenheit is adjusted in 1-degree increments. The system can transmit temperature in 0.5-degree increments. However, given the linear but non-integer correspondence between Celsius and Fahrenheit, asynchronous display issues may occur when switching temperature units. For example, if a user sets 65℉ on the wired controller, after conversion to Celsius and transmission to the user terminal, and then conversion back to Fahrenheit, the displayed value might be 66℉. In this case, if the user sets the temperature in the scenario control settings on the user terminal before switching, a large control error or control failure may occur.

[0018] In some embodiments of this application, to solve the above problems, a Fahrenheit-Celsius numerical mapping table is established, and the conversion relationship between Fahrenheit and Celsius is obtained by looking up the table to ensure display synchronization and control based on the same reference. However, as the control requirements expand, the scope of the table continues to increase, the storage space occupied also increases, and the requirements for the table become higher. Once an error occurs, it is not easy to detect and is not easy to expand and port.

[0019] The central air conditioning system proposed in this application aims to achieve synchronous switching of temperature between the wired controller and the user terminal, avoiding the error-prone problems of the lookup table method, and making it easy to expand and port the current system that operates at Celsius temperature.

[0020] like Figure 2 and Figure 5 As shown, the central air conditioning system proposed in this application includes an outdoor unit 1, an indoor unit 2, a wired controller 3, a central controller 4, a cloud server 5, and a user terminal 6; the wired controller 3 and the central controller 4 are both connected to the indoor unit 2, the central controller 4 is interconnected with the cloud server 5, and the user terminal 6 is interconnected with the cloud server 5.

[0021] The central air conditioning system proposed in this application also includes a Fahrenheit conversion module 7, which is used to obtain the currently transmitted Celsius temperature data from the system, convert it into first Fahrenheit temperature data using the Fahrenheit-Celsius standard conversion formula C=(F-32)÷1.8, and then convert the first Fahrenheit temperature data into target Fahrenheit temperature data by rounding.

[0022] The converted target Fahrenheit temperature data is sent to the wired controller 3 and the user terminal 6 for synchronous switching and display.

[0023] The Fahrenheit conversion is shown in Table 1 below:

[0024] Table 1

[0025]

[0026]

[0027] As can be seen from the data in Table 1, when the internal Celsius temperature data is different, the corresponding calculated Fahrenheit temperature data may overlap. For example, when the Celsius temperature is 2.5℃ or 3.0℃, the corresponding displayed Fahrenheit temperature is 37℉, and when the Celsius temperature is 7.5℃ or 8.0℃, the corresponding displayed Fahrenheit temperature is 46℉. However, no matter how the Celsius temperature changes within the system, the Fahrenheit temperature data displayed on the wired controller 3 and the user terminal 6 are switched synchronously, which does not affect the user experience.

[0028] As can be seen, based on the central air conditioning system proposed above, whether at the wired controller 3 or the user terminal 6, the Celsius temperature data transmitted within the system is converted to Fahrenheit temperature data using the same conversion method, ensuring that the displays at the wired controller 3 and the user terminal 6 are synchronized. However, within the system, regardless of how the user switches, Celsius temperature data is always transmitted, without changing the current temperature transmission framework of the central air conditioning system. This minimizes the impact on the overall system and allows for rapid switching of overseas products to meet Fahrenheit requirements or transition from domestic products to overseas products. It eliminates the need for table lookups, reduces the risk of errors, and solves the problems of error-proneness, difficulty in expansion, and portability associated with existing methods that use table lookups to ensure the synchronization of Celsius and Fahrenheit displays.

[0029] The aforementioned Fahrenheit conversion module 7 can be developed independently and applied to the wired controller 3 and the user terminal 6, such as... Figure 2 As shown, the entire central air conditioning system is still controlled using Celsius temperature data. The wired controller 3 and the user terminal 4 obtain the currently transmitted Celsius temperature value from the system, convert the Celsius temperature to Fahrenheit temperature based on the Fahrenheit conversion module, and then display it.

[0030] In this embodiment of the application, the Fahrenheit conversion module 7 is applied in the cloud server 5, such as... Figure 5 As shown, the entire central air conditioning system requires no modifications and is still controlled using Celsius temperature data. On the cloud server 5, a Fahrenheit conversion module 7 is installed through program upgrades or implantation. The cloud server 5 obtains the currently transmitted Celsius temperature data from the system, converts it to the target Fahrenheit temperature, and sends it to the central controller 4 and the user terminal 6 respectively. The central controller 4 then sends it to the wired controller 3 based on the connection path of central controller 4-indoor unit 2-wired controller 3, thereby realizing the synchronous switching display of wired controller 3 and user terminal 6.

[0031] In an embodiment of the present application, the central air-conditioning system further includes a Fahrenheit-Celsius conversion module 8, which is respectively applied to the wired controller 3 and the user terminal 6, and is used to receive the Fahrenheit temperature data set by the user through the wired controller 3 or the user terminal 6, convert the Fahrenheit temperature data input by the user into the first Celsius temperature data by using the above-mentioned Fahrenheit-Celsius standard conversion formula, and convert the fractional part of the first Celsius temperature data based on the comparison model given below:

[0032] The comparison model is: set a first threshold H1 and a second threshold H2, the first threshold H1 is less than the second threshold H2, that is, H1 < H2; when the fractional part of the first Celsius temperature data is less than the first threshold H1, convert the fractional part of the first Celsius temperature data into the first reference value J1; when the fractional part of the first Celsius temperature data is greater than or equal to the first threshold H1 and less than the sum H1 + H2 of the first threshold H1 and the second threshold H2, convert the fractional part of the first Celsius temperature data into the second reference value J2; when the fractional part of the first Celsius temperature data is greater than or equal to the sum H1 + H2 of the first threshold H1 and the second threshold H2, convert the fractional part of the first Celsius temperature data into the third reference value J3.

[0033] In an embodiment of the present application, when the Celsius temperature data applicable to internal transmission in the central air-conditioning system is transmitted at a minimum interval of 0.5 °C, the first threshold is set to 0.3 °C, the second threshold is set to 0.5 °C, the first reference value J1 = 0, the second reference value J2 = 0.5, and the third reference value J3 = 1; then if the fractional part of the first Celsius temperature data is less than 0.3 °C, the fractional part of the first Celsius temperature data is converted into 0, if the fractional part of the first Celsius temperature data is greater than or equal to 0.3 °C and less than 0.3 °C + 0.5 °C, the fractional part of the first Celsius temperature data is converted into 0.5 °C, and if the fractional part of the first Celsius temperature data is greater than or equal to 0.3 °C + 0.5 °C, the fractional part of the first Celsius temperature data is converted into 1 °C.

[0034] After converting the fractional part of the first Celsius temperature data into the first reference value J1, the second reference value J2 or the third reference value J3, the Fahrenheit-Celsius conversion module 8 converts the first Celsius temperature data into the target Celsius temperature data T + J1, T + J2 or T + J3 by calculating the sum of the integer part T of the first Celsius temperature data and the converted first reference value J1, second reference value J2 or third reference value J3.

[0035] The embodiments shown in Table 2 below:

[0036] Table 2

[0037]

[0038] As can be seen from Table 2, when different degrees Fahrenheit are set, there will be a lack of Celsius temperature inside the system. For example, there will be a 2.5°C loss at 36°F and 37°F, and a 7.5°C loss at 45°F and 46°F. However, the Celsius temperature transmitted inside the system does not affect the continuous setting of the Fahrenheit temperature at the wired controller 3 and the user terminal 6, and the missing Celsius temperature will not have a significant impact on the user.

[0039] Based on the aforementioned central air conditioning system, this application proposes a corresponding control method, such as... Figure 3 As shown, it includes the following steps:

[0040] Step S31: Obtain the current Celsius temperature data transmitted inside the central air conditioning system.

[0041] In the central air conditioning system of this application, regardless of whether the wired controller and the user terminal use Celsius or Fahrenheit temperatures, the temperature transmitted and processed within the system is always Celsius.

[0042] Step S32: Convert the currently transmitted Celsius temperature data into first Fahrenheit temperature data using the Fahrenheit-Celsius standard conversion formula.

[0043] The Celsius temperature was converted to Fahrenheit using the standard formula C = (F - 32) ÷ 1.8, and this was designated as the first Fahrenheit temperature data.

[0044] Step S33: Calculate the target Fahrenheit temperature data by rounding the first Fahrenheit temperature data.

[0045] As shown in Table 1 above, the first Fahrenheit temperature data converted by the standard formula is rounded to obtain the final target Fahrenheit temperature data to be applied.

[0046] Step S34: Send the target Fahrenheit temperature data to the wired controller and / or user terminal.

[0047] The target Fahrenheit temperature is ultimately sent to the wired controller and / or user terminal application, including but not limited to display, calculation, setting, storage, etc.

[0048] In this embodiment, the above method can be added to the cloud server through program upgrades or patch modules, executed in the cloud server, and then synchronously sent by the cloud server to the wired controller and user terminal for application.

[0049] In some embodiments of this application, the above method can also be added separately to the wired controller and user terminal application through program upgrades or patch modules, and executed separately in the wired controller and user terminal, but all of them obtain the transmitted Celsius temperature data from inside the system.

[0050] Based on this application model, in some embodiments of this application, the control method of the central air conditioning system, such as... Figure 4 As shown, it also includes:

[0051] Step S41: Receive the input Fahrenheit temperature data.

[0052] Users can set and control the central air conditioning system using wired controllers or user terminals with Fahrenheit temperature settings.

[0053] Step S42: Convert the input Fahrenheit temperature data into Celsius temperature data using the Fahrenheit-Celsius standard conversion formula.

[0054] The formula C = (F - 32) ÷ 1.8 is used to convert the user-inputted Fahrenheit temperature data into the first Celsius temperature data.

[0055] Step S43: Based on the comparison model, convert the decimal part of the first Celsius temperature data into a first reference value, a second reference value, or a third reference value.

[0056] The comparison model is:

[0057] 1. Set the first threshold H1 and the second threshold H2;

[0058] 2. When the decimal part of the first Celsius temperature data is less than the first threshold H1, the decimal part of the first Celsius temperature data is converted into the first reference value J1;

[0059] 3. When the decimal part of the first Celsius temperature data is greater than or equal to the first threshold H1 and less than the sum of the first threshold and the second threshold H1+H2, the decimal part of the first Celsius temperature data is converted into the second reference value J2.

[0060] 4. When the decimal part of the first Celsius temperature data is greater than or equal to the sum of the first threshold and the second threshold, H1+H2, the decimal part of the first Celsius temperature data is converted to the third reference value J3.

[0061] The aforementioned first threshold H1, second threshold H2, first reference value J1, second reference value J2, and third reference value J3 are set according to the actual application of the central air conditioning system. For example, in the case of conventional Celsius application, that is, when the system is set at an adjustment interval of 1 degree Fahrenheit at the online controller and user terminal, and the transmission and processing are carried out at a minimum interval of 0.5 degrees Celsius within the system, H1 = 0.3, H2 = 0.5, J1 = 0, J2 = 0.5, and J3 = 1 are set. In other application cases, the above parameters can be set according to the actual situation based on experience or experimental values, which will not be elaborated in this application.

[0062] Step S44: Convert the first Celsius temperature data into target Celsius temperature data by calculating the sum of the integer part of the first Celsius temperature data and the first, second, or third reference value.

[0063] That is, the target Celsius temperature data = the integer part of the first Celsius temperature data T + J1 / J2 / J3.

[0064] In some embodiments of this application, the central air conditioning system and its control method proposed in this application obtain the currently transmitted Celsius temperature data from the system through a Fahrenheit conversion module. This data is then converted to first Fahrenheit temperature data using a Fahrenheit-Celsius standard conversion formula. The first Fahrenheit temperature data is then rounded to obtain the target Fahrenheit temperature data, which is then sent to the wired controller and / or user terminal. Based on the above, regardless of whether it is at the wired controller or the user terminal, the Celsius temperature data transmitted within the system is converted to Fahrenheit temperature data using the same conversion method, ensuring synchronization of the display on the wired controller and the user terminal. However, within the system, regardless of how the user switches, Celsius temperature data is always transmitted, without changing the temperature transmission framework of the current central air conditioning system. This minimizes the impact on the overall system and allows for rapid switching between overseas products requiring Fahrenheit or transitioning from domestic products to overseas products. It eliminates the need for table lookups, reduces the risk of errors, and solves the problems of error-proneness, limited scalability, and portability associated with existing methods that use table lookups to ensure system synchronization between Celsius and Fahrenheit displays.

[0065] In some embodiments of this application, when a user uses a wired controller or user terminal to adjust the air conditioning system to Fahrenheit temperature, the application of a comparison model enables continuous setting of Fahrenheit temperature while maintaining the transmission and application of Celsius temperature data within the system, thus improving the user experience.

[0066] It should be noted that, in the specific implementation process, the control method of the above-mentioned central air conditioning system can be implemented by a hardware processor executing computer-executable instructions in software form stored in memory, which will not be elaborated here. The programs corresponding to the actions performed by the above-mentioned central air conditioning system can all be stored in the computer-readable storage medium of the system in software form, so that the processor can call and execute the corresponding operations of the above modules.

[0067] The computer-readable storage media mentioned above may include volatile memory, such as random access memory; may also include non-volatile memory, such as read-only memory, flash memory, hard disk or solid-state drive; and may also include combinations of the above types of memory.

[0068] The term "processor" as mentioned above can also refer to a collective of multiple processing elements. For example, a processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor, and it can also be a special-purpose processor.

[0069] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A central air conditioning system, comprising: The system includes an outdoor unit, an indoor unit, a wired controller, a central controller, a cloud server, and a user terminal; both the wired controller and the central controller are connected to the indoor unit, the central controller is interconnected with the cloud server, and the user terminal is interconnected with the cloud server. Its characteristic is that it further includes: The Fahrenheit conversion module is used to obtain the currently transmitted Celsius temperature data from within the system, convert the transmitted Celsius temperature data into first Fahrenheit temperature data using the Fahrenheit-Celsius standard conversion formula, and then round the first Fahrenheit temperature data to obtain the target Fahrenheit temperature data. This first Fahrenheit temperature data is then sent to the central controller and user terminal. The central controller sends the data to the wired controller via the central controller-indoor unit-wired controller connection path, enabling the wired controller and user terminal to switch displays synchronously. The Fahrenheit conversion module can be upgraded through program upgrades or embedded in the cloud server, or added separately to the wired controller and user terminal applications. Within the system, it consistently transmits and processes Celsius temperatures. The system also includes: A Celsius conversion module, applied in the wired controller and the user terminal, is used to receive input Fahrenheit temperature data, convert the input Fahrenheit temperature data into first Celsius temperature data using the Fahrenheit-Celsius standard conversion formula, convert the decimal part of the first Celsius temperature data into a first reference value, a second reference value, or a third reference value based on a comparison model, and convert the first Celsius temperature data into target Celsius temperature data by calculating the sum of the integer part of the first Celsius temperature data and the converted first reference value, second reference value, or third reference value. The comparison model is defined as follows: a first threshold and a second threshold are set. When the decimal part of the first Celsius temperature data is less than the first threshold, the decimal part of the first Celsius temperature data is converted into the first reference value; When the decimal part of the first Celsius temperature data is greater than or equal to the first threshold and less than the sum of the first threshold and the second threshold, the decimal part of the first Celsius temperature data is converted into the second reference value; When the decimal part of the first Celsius temperature data is greater than or equal to the sum of the first threshold and the second threshold, the decimal part of the first Celsius temperature data is converted into a third reference value.

2. The central air conditioning system according to claim 1, characterized in that, The first threshold is 0.3℃, the second threshold is 0.5℃; the first reference value is 0, the second reference value is 0.5, and the third reference value is 1.

3. The central air conditioning system according to claim 1, characterized in that, The Fahrenheit conversion module is used in the wired controller and the user terminal.

4. The central air conditioning system according to claim 1, characterized in that, The Fahrenheit conversion module is used in the cloud server.

5. A control method for a central air conditioning system, wherein the central air conditioning system includes: Outdoor unit, indoor unit, wired controller, central controller, cloud server and user terminal; Both the wired controller and the central controller are connected to the indoor unit. The central controller is interconnected with the cloud server, and the user terminal is interconnected with the cloud server. Its features include, The Fahrenheit conversion module is used for: Obtain the currently transmitted Celsius temperature data inside the central air conditioning system; The transmitted Celsius temperature data is converted to the first Fahrenheit temperature data using the Fahrenheit-Celsius standard conversion formula. The target Fahrenheit temperature data is obtained by rounding the first Fahrenheit temperature data. Send the target Fahrenheit temperature data to the wired controller and / or the user terminal; The central controller sends data to the indoor unit and the wired controller via the connection path, enabling the wired controller and the user terminal to switch displays synchronously. The Fahrenheit conversion module is upgraded through a program or installed on the cloud server or added separately to the wired controller and the user terminal application. The temperature transmitted and processed within the system is always in Celsius. The method further includes: Receive input Fahrenheit temperature data; The input Fahrenheit temperature data is converted into first Celsius temperature data using the aforementioned Fahrenheit-Celsius standard conversion formula. Based on the comparison model, the decimal part of the first Celsius temperature data is converted into a first reference value, a second reference value, or a third reference value; The first Celsius temperature data is converted into target Celsius temperature data by calculating the sum of the integer part of the first Celsius temperature data and the first, second, or third reference value. The comparison model is defined as follows: a first threshold and a second threshold are set. When the decimal part of the first Celsius temperature data is less than the first threshold, the decimal part of the first Celsius temperature data is converted into the first reference value; When the decimal part of the first Celsius temperature data is greater than or equal to the first threshold and less than the sum of the first threshold and the second threshold, the decimal part of the first Celsius temperature data is converted into the second reference value; When the decimal part of the first Celsius temperature data is greater than or equal to the sum of the first threshold and the second threshold, the decimal part of the first Celsius temperature data is converted into a third reference value.

6. The control method for a central air conditioning system according to claim 5, characterized in that, The first threshold is 0.3℃, the second threshold is 0.5℃; the first reference value is 0, the second reference value is 0.5, and the third reference value is 1.

7. The control method for a central air conditioning system according to claim 5, characterized in that, The method is applied to the wired controller and the user terminal; Alternatively, if the method is applied to the cloud server, then the method further includes: The cloud server sends the target Fahrenheit temperature data to the wired controller and the user terminal.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which are executed by a processor according to the central air conditioning control method as described in any one of claims 5-7.

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