An air conditioning unit redundancy control method, device and air conditioning unit

Abstract

This invention discloses a method, apparatus, and air conditioning unit for redundant control. The air conditioning unit includes a near-end human-machine interface (HMI) device and a far-end HMI device, both communicatively connected to the unit's mainboard. The method includes: determining the operating mode of the HMI devices, wherein the operating mode is either a standalone mode or a networked mode; in the networked mode, all connected HMI devices can initiate communication with the mainboard and perform data synchronization; when a fault is detected in the HMI device, it automatically switches to standalone mode. This invention enables local and remote synchronous control, achieves automatic redundant control by switching operating modes, and ensures the reliability of redundant control through data synchronization, thereby improving the maintenance efficiency, equipment reliability, and ease of use of the air conditioning unit.

Description

Technical Field

[0001] This invention relates to the field of unit technology, and more specifically, to a method, device, and air conditioning unit for redundant control. Background Technology

[0002] Commercial air conditioning units are generally large and are typically installed in locations such as shopping mall basements, factory rooftops, and control centers. Due to the varying geographical locations of these units, maintenance personnel often need to travel to different locations for maintenance, resulting in low efficiency. Furthermore, currently, the human-machine interface equipment (HMI) for these units is usually only one set, and if it fails, it needs to be replaced and the unit parameters reset before it can be used again. This entire process is time-consuming, and downtime can easily lead to customer losses and complaints.

[0003] There is currently no effective solution to the problem that existing air conditioning units are only equipped with one set of human-machine interaction equipment, which is inconvenient to use and maintain. Summary of the Invention

[0004] This invention provides a method, device, and air conditioning unit for redundant control, which at least solves the problem that existing air conditioning units are only equipped with one set of human-machine interaction equipment, making them inconvenient to use and maintain.

[0005] To address the aforementioned technical problems, this invention provides a method for redundant control of an air conditioning unit. The air conditioning unit includes a near-end human-machine interface device and a far-end human-machine interface device connected by communication, and both the near-end and far-end human-machine interface devices are connected to the main board of the unit. The method includes:

[0006] Determine the working mode of the human-computer interaction device, wherein the working mode is a stand-alone mode or a network mode;

[0007] In online mode, all connected human-computer interaction devices can communicate with the motherboard and synchronize data. When a malfunction is detected in the human-computer interaction device, it automatically switches to stand-alone mode.

[0008] Optionally, determine the operating mode of the human-computer interaction device, including:

[0009] In response to a user command, the human-computer interaction device is controlled to enter a working mode corresponding to the user command; or...

[0010] When preset conditions are met, the human-computer interaction device is automatically controlled to enter the working mode corresponding to the preset conditions.

[0011] Optionally, when preset conditions are met, the human-computer interaction device is automatically controlled to enter a working mode corresponding to the preset conditions, including at least one of the following:

[0012] The human-computer interaction device defaults to stand-alone mode after being powered on.

[0013] The system detects that the air conditioning unit is equipped with both near-end and far-end human-machine interaction devices and automatically enters online mode.

[0014] Optionally, in online mode, all online human-computer interaction devices can initiate communication with the motherboard, including:

[0015] In online mode, any human-computer interaction device informs other human-computer interaction devices before initiating communication with the motherboard;

[0016] If none of the other human-computer interaction devices are currently sending data to the motherboard, then any one of the human-computer interaction devices sends data to the motherboard.

[0017] If other human-computer interaction devices are currently sending data to the motherboard, then based on device priority, the higher-priority human-computer interaction device is granted permission to send data to the motherboard, while the lower-priority human-computer interaction device is not allowed to send data to the motherboard.

[0018] Optionally, after determining the operating mode of the human-computer interaction device, the following may also be included:

[0019] If the working mode is online mode, after the human-computer interaction device enters online mode, it will search for other human-computer interaction devices to connect to within a preset time.

[0020] Determine if the connection was successful;

[0021] If the connection is successfully established within the preset time, the online mode will be maintained.

[0022] If the connection is not established within the preset time, it will automatically switch to single-player mode.

[0023] Optional, determining whether the connection was successful includes:

[0024] During the online process, the human-computer interaction device sends its own priority parameters to the online object and receives the priority parameters of the online object;

[0025] Determine the device communication priority based on its own priority parameters and those of the connected devices;

[0026] If the priorities are inconsistent, the connection is considered successful.

[0027] If the priorities are the same, the connection is considered to have failed.

[0028] Optional, data synchronization can be performed, including:

[0029] In online mode, while sending data to the motherboard, the human-computer interaction device also sends the data to other human-computer interaction devices, so that the other human-computer interaction devices can update their own data and complete data synchronization.

[0030] When switching from stand-alone mode to online mode, the human-computer interaction device that sends data in stand-alone mode sends synchronization data to other human-computer interaction devices after it finds them.

[0031] This invention also provides a redundant control device for an air conditioning unit. The air conditioning unit includes a near-end human-machine interface device and a far-end human-machine interface device that are communicatively connected, and both the near-end human-machine interface device and the far-end human-machine interface device are communicatively connected to the main board of the unit. The device includes:

[0032] A determination module is used to determine the working mode of the human-computer interaction device, wherein the working mode is a stand-alone mode or an online mode;

[0033] The control module is used to enable all connected human-computer interaction devices to communicate with the motherboard and synchronize data in online mode. When a fault is detected in the human-computer interaction device, it automatically switches to stand-alone mode.

[0034] This invention also provides an air conditioning unit, including: the air conditioning unit redundancy control device described in this invention.

[0035] This invention also provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method described in this invention.

[0036] This invention also provides a non-volatile computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the method described in this invention.

[0037] By applying the technical solution of this invention, a near-end human-machine interface device and a far-end human-machine interface device are configured in the air conditioning unit. Each human-machine interface device is interconnected and communicates with the other. Both the near-end and far-end human-machine interface devices are connected to the main board of the unit. The human-machine interface devices are equipped with a stand-alone mode and a network mode. In the network mode, all connected human-machine interface devices can initiate communication with the main board and perform data synchronization. When a fault is detected in a human-machine interface device, it automatically switches to the stand-alone mode. This enables local and remote synchronous control. Automatic redundant control is achieved by switching the working mode, and the reliability of redundant control is ensured by data synchronization. This improves the maintenance efficiency, equipment reliability, and ease of use of the air conditioning unit. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the air conditioning unit provided in Embodiment 1 of the present invention;

[0039] Figure 2 This is a flowchart of the redundancy control method for air conditioning units provided in Embodiment 1 of the present invention;

[0040] Figure 3 This is a structural block diagram of the redundant control device for air conditioning units provided in Embodiment 3 of the present invention. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0042] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0044] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0045] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0046] The optional embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0047] Example 1

[0048] To address the problem that existing air conditioning units are only equipped with one set of human-machine interaction devices, which is inconvenient for use and maintenance, this embodiment provides a redundant control method for air conditioning units. The air conditioning unit includes a near-end human-machine interaction device and a far-end human-machine interaction device that are connected in communication, and both the near-end human-machine interaction device and the far-end human-machine interaction device are connected in communication with the main board of the unit.

[0049] Local HMIs are those installed at the air conditioning unit, enabling local control. Remote HMIs are installed at a distance from the air conditioning unit, such as in the maintenance office area, enabling remote control. Local and remote HMIs communicate with each other, for example, via TCP or other communication connections. Both local and remote HMIs communicate with the unit's mainboard, for example, via a RS-485 bus. There can be at least one local HMI and at least one remote HMI.

[0050] like Figure 1 As shown, the air conditioning unit includes: a near-end human-machine interface device 1, a far-end human-machine interface device 2, a main board 3, a compressor 4, a frequency converter 5, and an expansion board 6. Near-end human-machine interface device 1 and far-end human-machine interface device 2 are connected via TCP communication, and both are connected to the main board 3 of the unit via a 485 bus. Near-end human-machine interface device 1 and far-end human-machine interface device 2 can send control commands to the main board 3. The main board 3, based on these control commands, controls the compressor 4, frequency converter 5, and expansion board 6 to perform corresponding actions or upload requested data. The compressor 4, frequency converter 5, and expansion board 6 can also send operating data to near-end human-machine interface device 1 and far-end human-machine interface device 2 via the main board 3.

[0051] Figure 2 This is a flowchart of the redundancy control method for air conditioning units provided in Embodiment 1 of the present invention, as follows: Figure 2 As shown, the method includes the following steps:

[0052] S201, determine the working mode of the human-computer interaction device, wherein the working mode is a stand-alone mode or an online mode.

[0053] S202, In online mode, all online human-computer interaction devices can initiate communication with the motherboard and perform data synchronization. When a fault is detected in the human-computer interaction device, it automatically switches to stand-alone mode.

[0054] Human-machine interface (HMI) devices are configured with two operating modes: standalone mode and online mode. In standalone mode, only one HMI device is authorized to send control commands (such as control actions or data requests) to the motherboard; other HMI devices cannot send such commands. In standalone mode, authorized HMI devices can be determined based on default settings or user instructions. While unauthorized HMI devices cannot send control commands to the motherboard in standalone mode, they can still listen to bus data.

[0055] In online mode, all connected human-machine interface devices can communicate with the motherboard and synchronize data, facilitating the use of the air conditioning unit. When a malfunction is detected in the human-machine interface devices (e.g., inability to communicate between human-machine interface devices, inability to communicate between human-machine interface devices and the motherboard, damage to the human-machine interface devices, etc.), the system automatically switches from online mode to stand-alone mode to ensure the normal operation of the air conditioning unit.

[0056] In this embodiment, a near-end human-machine interface (HMI) device and a far-end HMI device are configured in the air conditioning unit. The HMI devices are interconnected and both near-end and far-end HMI devices are connected to the main board of the unit. The HMI devices are configured with stand-alone mode and online mode. In online mode, all connected HMI devices can initiate communication with the main board and perform data synchronization. When a fault is detected in the HMI device, it automatically switches to stand-alone mode. This enables local and remote synchronous control. Automatic redundant control is achieved by switching the working mode, and the reliability of redundant control is ensured by data synchronization. This improves the maintenance efficiency, equipment reliability, and ease of use of the air conditioning unit.

[0057] In one embodiment, determining the operating mode of a human-computer interaction device includes: responding to a user instruction by controlling the human-computer interaction device to enter an operating mode corresponding to the user instruction; or, automatically controlling the human-computer interaction device to enter an operating mode corresponding to a preset condition when a preset condition is met. In this embodiment, the human-computer interaction device can be controlled to enter a corresponding operating mode according to a user instruction to meet user needs, or it can be automatically controlled to enter a corresponding operating mode according to preset conditions to provide convenience for the user.

[0058] Furthermore, when preset conditions are met, the human-computer interaction device is automatically controlled to enter a working mode corresponding to the preset conditions, including at least one of the following:

[0059] The human-computer interaction device defaults to stand-alone mode after being powered on.

[0060] The system detects that the air conditioning unit is equipped with both near-end and far-end human-machine interaction devices and automatically enters online mode.

[0061] For example, the human-machine interaction device is in stand-alone mode by default when it is first powered on, and a prompt "Please confirm that the device is in stand-alone mode" pops up on the human-machine interface. After the user confirms the working mode, the human-machine interaction device starts to communicate with the motherboard device to complete the unit control. If the user selects online mode, it will switch to online mode.

[0062] In online mode, all connected human-machine interface devices can initiate communication with the air conditioning unit's mainboard. To avoid conflicts, each connected human-machine interface device negotiates with other connected human-machine interface devices before initiating communication. Specifically, in online mode, any connected human-machine interface device can initiate communication with the mainboard, including: in online mode, any human-machine interface device informs other human-machine interface devices before initiating communication with the mainboard; if other human-machine interface devices are not currently sending data to the mainboard, then any human-machine interface device sends data to the mainboard; if other human-machine interface devices are currently sending data to the mainboard, then based on device priority, the higher-priority human-machine interface device is granted permission to send data to the mainboard (i.e., has communication permission), and the lower-priority human-machine interface device is not allowed to send data to the mainboard.

[0063] In online mode, a priority parameter is set, ensuring that higher-priority devices always gain priority in communication arbitration. The priority of each human-machine interface (HMI) device can be configured, ideally with different priorities for HMI devices within the same air conditioning unit. For example, the priority can be set by assigning a priority parameter value to the HMI device, or by using hardware buttons / touchscreen buttons on the HMI device. The priorities of the HMI devices can be changed according to actual needs.

[0064] In this implementation, in online mode, if only one human-machine interaction device initiates communication, then a low-priority human-machine interaction device can also send data to the motherboard; if multiple human-machine interaction devices initiate communication at the same time, the human-machine interaction device with communication permission (i.e., the high-priority human-machine interaction device) is negotiated according to the device priority to complete the communication control, thereby avoiding conflicts.

[0065] In one implementation, after determining the operating mode of the human-computer interaction device, the method further includes: if the operating mode is an online mode, after the human-computer interaction device enters the online mode, it searches for other human-computer interaction devices for online connection within a preset time; determining whether the connection is successful; if the connection is successful within the preset time, the online mode is maintained; if the connection is not successful within the preset time, it automatically switches to stand-alone mode. The preset time can be set according to actual conditions, for example, a preset time of 30 seconds.

[0066] This implementation method determines whether to switch to stand-alone mode after entering online mode by judging whether the connection is successful within a preset time. This avoids the inability to control the air conditioning unit due to connection failure, thereby ensuring the normal operation of the air conditioning unit.

[0067] Furthermore, determining whether the connection is successful includes: during the connection process, the human-computer interaction device sends its own priority parameters to the connection object and receives the priority parameters of the connection object; determines the device communication priority based on its own and the connection object's priority parameters; if the priorities are inconsistent, the connection is determined to be successful; if the priorities are consistent, the connection is determined to be unsuccessful, and a prompt message can be output at this time.

[0068] This implementation method determines whether the connection is successful by checking whether the human-computer interaction device has completed the confirmation of the priority between devices, which is simple and efficient.

[0069] In one implementation, data synchronization includes: in online mode, the human-computer interaction device sends data to the motherboard and also sends the data to other human-computer interaction devices, so that the other human-computer interaction devices update their own data and complete data synchronization; when switching from stand-alone mode to online mode, the human-computer interaction device that sends data in stand-alone mode sends synchronization data to other human-computer interaction devices after searching for them.

[0070] This implementation method can perform real-time data synchronization in online mode, and can also synchronize the data in the single-unit mode in a timely manner when switching from single-unit mode to online mode, ensuring the accuracy and reliability of air conditioning unit control.

[0071] Example 2

[0072] The redundancy control method for air conditioning units described above will be illustrated below with a specific embodiment. However, it is worth noting that this specific embodiment is only for better illustration of this application and does not constitute an undue limitation of this application. Explanations of terms that are the same or corresponding to those in the above embodiment will not be repeated in this embodiment.

[0073] The human-computer interaction device has two working modes: stand-alone mode and online mode. In online mode, there is also an online working priority parameter. Higher priority devices always get the first communication permission in communication arbitration.

[0074] The HMI (Human Machine Interaction) device defaults to standalone mode upon initial power-on and displays a message on the HMI stating "Please confirm that the device is in standalone mode." After confirming the operating mode, the HMI device begins communication with the mainboard to control the unit's equipment. If the unit is equipped with two sets of HMI devices, it can be switched to online operating mode and confirmed.

[0075] When a human-computer interaction (HCI) device enters online mode, it will search for and connect to other HCI devices within 30 seconds. If the connection is successful within 30 seconds, it will maintain online mode. If the connection fails within 30 seconds, it will automatically switch to standalone mode (this can be configured to maintain the current state after a connection failure). Successful connection is determined by whether the devices have completed priority confirmation. During the connection process, the device sends its own connection priority parameters to the connection target and receives priority parameters from the connection target. It determines the device's communication priority by comparing its own and the connection target's priority parameters. If the priorities match, an error message will pop up, and the connection will be treated as a failure. If the priorities do not match, the connection is considered successful.

[0076] In online mode, all connected human-computer interaction devices can initiate communication with the motherboard. Before each communication, the connected devices negotiate through TCP network communication. If the connected devices initiate communication at the same time, only the high-priority device can initiate communication, and the low-priority device cannot initiate communication with the motherboard.

[0077] When a device malfunctions and communication fails (e.g., communication between devices fails, or communication between a device and the motherboard fails), the device switches to stand-alone mode. Even when a device is damaged, it can automatically switch to stand-alone mode and continue operating.

[0078] In online mode, data synchronization between connected human-machine interface devices is achieved through TCP network communication. Specifically, in addition to sending data to the motherboard via the 485 bus, a human-machine interface device that has obtained data sending permissions will also send data to other connected human-machine interface devices via TCP. After receiving the data, the other human-machine interface devices update their own data, completing the data synchronization. When switching from stand-alone mode to online mode, the human-machine interface device that was sending data in stand-alone mode will send synchronization data to other human-machine interface devices after it finds them.

[0079] In practical applications, human-machine interface devices (i.e., near-end and remote human-machine interface devices) can be installed in both the chiller and the maintenance office area to achieve local and remote control. When on-site commissioning of the chiller is required, the human-machine interface device on the chiller can be used to complete the control, improving commissioning and maintenance efficiency.

[0080] The multi-unit redundancy control method for large commercial air conditioning units in this embodiment equips the air conditioning unit with multiple sets of human-machine interaction devices. These devices are directly connected and communicate with each other, enabling local and remote synchronous control, data synchronization, and automatic redundancy control. This improves maintenance efficiency, equipment reliability, and ease of use, and solves the problem in the prior art where air conditioning units are only equipped with one set of human-machine interaction devices, making them inconvenient to use and maintain.

[0081] Example 3

[0082] Based on the same inventive concept, this embodiment provides an air conditioning unit redundancy control device, which can be used to implement the air conditioning unit redundancy control method described in the above embodiment. This air conditioning unit redundancy control device can be implemented through software and / or hardware. The air conditioning unit includes a near-end human-machine interface device and a far-end human-machine interface device that are communicatively connected, and both the near-end and far-end human-machine interface devices are communicatively connected to the unit's mainboard.

[0083] Figure 3 This is a structural block diagram of the redundant control device for air conditioning units provided in Embodiment 3 of the present invention, as shown below. Figure 3 As shown, the redundant control device for the air conditioning unit includes:

[0084] The determining module 31 is used to determine the working mode of the human-computer interaction device, wherein the working mode is a stand-alone mode or a network mode;

[0085] The control module 32 is used to enable all connected human-computer interaction devices to communicate with the motherboard and synchronize data in online mode, and to automatically switch to stand-alone mode when a fault is detected in the human-computer interaction device.

[0086] In this embodiment, a near-end human-machine interface (HMI) device and a far-end HMI device are configured in the air conditioning unit. The HMI devices are interconnected and both near-end and far-end HMI devices are connected to the main board of the unit. The HMI devices are configured with stand-alone mode and online mode. In online mode, all connected HMI devices can initiate communication with the main board and perform data synchronization. When a fault is detected in the HMI device, it automatically switches to stand-alone mode. This enables local and remote synchronous control. Automatic redundant control is achieved by switching the working mode, and the reliability of redundant control is ensured by data synchronization. This improves the maintenance efficiency, equipment reliability, and ease of use of the air conditioning unit.

[0087] Optionally, module 31 is specifically used for:

[0088] In response to a user command, the human-computer interaction device is controlled to enter a working mode corresponding to the user command; or...

[0089] When preset conditions are met, the human-computer interaction device is automatically controlled to enter the working mode corresponding to the preset conditions.

[0090] Optionally, when the preset conditions are met, the determining module 31 automatically controls the human-computer interaction device to enter a working mode corresponding to the preset conditions, including at least one of the following:

[0091] The human-computer interaction device defaults to stand-alone mode after being powered on.

[0092] The system detects that the air conditioning unit is equipped with both near-end and far-end human-machine interaction devices and automatically enters online mode.

[0093] Optionally, the control module 32 includes:

[0094] The notification unit is used to notify other human-computer interaction devices before any human-computer interaction device initiates communication with the motherboard in online mode.

[0095] A first control unit is configured to send data to the motherboard if none of the other human-computer interaction devices are currently sending data to the motherboard.

[0096] The second control unit is configured to, if the other human-computer interaction devices are currently sending data to the motherboard, determine, based on device priority, that a higher-priority human-computer interaction device is granted permission to send data to the motherboard, while a lower-priority human-computer interaction device is not allowed to send data to the motherboard.

[0097] Optionally, the aforementioned redundant control device for air conditioning units further includes:

[0098] The search module is used to search for other human-computer interaction devices and connect to them within a preset time after determining the working mode of the human-computer interaction device. If the working mode is online mode, the human-computer interaction device enters the online mode.

[0099] The judgment module is used to determine whether the connection is successful;

[0100] The hold module is used to maintain the connection mode if the connection is successfully established within a preset time.

[0101] The switching module is used to automatically switch to standalone mode if the connection is not successfully established within a preset time.

[0102] Optionally, the judgment module includes:

[0103] The transceiver unit is used to send its own priority parameters to the online object and receive the priority parameters of the online object during the online process;

[0104] The first determining unit is used to determine the device communication priority based on its own and the priority parameters of the connected object;

[0105] The second determining unit is used to determine that the connection is successful if the priorities are inconsistent;

[0106] The third determining unit is used to determine if the priority is consistent, thus indicating that the connection has failed.

[0107] Optionally, the control module 32 includes:

[0108] The first synchronization unit is used in online mode to send data from the human-computer interaction device to the motherboard and other human-computer interaction devices at the same time, so that the other human-computer interaction devices can update their own data and complete data synchronization.

[0109] The second synchronization unit is used to send synchronization data to other human-computer interaction devices after the human-computer interaction device that sends data in the stand-alone mode is found when switching from stand-alone mode to online mode.

[0110] The aforementioned air conditioning unit redundancy control device can execute the air conditioning unit redundancy control method provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects of the method. Technical details not described in detail in this embodiment can be found in the air conditioning unit redundancy control method provided in the embodiments of the present invention.

[0111] Example 4

[0112] This embodiment provides an air conditioning unit, including: the air conditioning unit redundancy control device described in the above embodiment.

[0113] Example 5

[0114] This embodiment provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the method described in the above embodiment.

[0115] Example 6

[0116] This embodiment provides a non-volatile computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the method described in the above embodiment.

[0117] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0118] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A redundancy control method for an air conditioning unit, characterized in that, The air conditioning unit includes a near-end human-machine interface device and a far-end human-machine interface device connected by communication, and both the near-end human-machine interface device and the far-end human-machine interface device are connected by communication to the main board of the unit. The method includes: Determine the working mode of the human-computer interaction device, wherein the working mode is a stand-alone mode or a network mode; In online mode, all connected human-computer interaction devices can communicate with the motherboard and synchronize data. When a malfunction is detected in the human-computer interaction device, it automatically switches to stand-alone mode.

2. The method according to claim 1, characterized in that, Determine the operating mode of the human-computer interaction device, including: In response to a user command, the human-computer interaction device is controlled to enter a working mode corresponding to the user command; or... When preset conditions are met, the human-computer interaction device is automatically controlled to enter the working mode corresponding to the preset conditions.

3. The method according to claim 2, characterized in that, When preset conditions are met, the human-computer interaction device is automatically controlled to enter a working mode corresponding to the preset conditions, including at least one of the following: The human-computer interaction device defaults to stand-alone mode after being powered on. The system detects that the air conditioning unit is equipped with both near-end and far-end human-machine interaction devices and automatically enters online mode.

4. The method according to claim 1, characterized in that, In online mode, all online human-computer interaction devices can initiate communication with the motherboard, including: In online mode, any human-computer interaction device informs other human-computer interaction devices before initiating communication with the motherboard; If none of the other human-computer interaction devices are currently sending data to the motherboard, then any one of the human-computer interaction devices sends data to the motherboard. If other human-computer interaction devices are currently sending data to the motherboard, then based on device priority, the higher-priority human-computer interaction device is granted permission to send data to the motherboard, while the lower-priority human-computer interaction device is not allowed to send data to the motherboard.

5. The method according to claim 1, characterized in that, After determining the working mode of the human-computer interaction device, the following is also included: If the working mode is online mode, after the human-computer interaction device enters online mode, it will search for other human-computer interaction devices to connect to within a preset time. Determine if the connection was successful; If the connection is successfully established within the preset time, the online mode will be maintained. If the connection is not established within the preset time, it will automatically switch to single-player mode.

6. The method according to claim 5, characterized in that, Determining whether the connection is successful includes: During the online process, the human-computer interaction device sends its own priority parameters to the online object and receives the priority parameters of the online object; Determine the device communication priority based on its own priority parameters and those of the connected devices; If the priorities are inconsistent, the connection is considered successful. If the priorities are the same, then the connection is considered to have failed.

7. The method according to any one of claims 1 to 6, characterized in that, Data synchronization includes: In online mode, while sending data to the motherboard, the human-computer interaction device also sends the data to other human-computer interaction devices, so that the other human-computer interaction devices can update their own data and complete data synchronization. When switching from stand-alone mode to online mode, the human-computer interaction device that sends data in stand-alone mode sends synchronization data to other human-computer interaction devices after it finds them.

8. A redundant control device for an air conditioning unit, characterized in that, The air conditioning unit includes a near-end human-machine interface device and a far-end human-machine interface device connected by communication, and both the near-end human-machine interface device and the far-end human-machine interface device are connected by communication to the main board of the unit. The device includes: A determination module is used to determine the working mode of the human-computer interaction device, wherein the working mode is a stand-alone mode or an online mode; The control module is used to enable all connected human-computer interaction devices to communicate with the motherboard and synchronize data in online mode. When a fault is detected in the human-computer interaction device, it automatically switches to stand-alone mode.

9. An air conditioning unit, characterized in that, include: The redundancy control device for air conditioning units as described in claim 8.

10. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, implements the steps of the method according to any one of claims 1 to 7.

11. A non-volatile computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7.

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