Methods, devices and systems for controlling multiple air conditioning units, air conditioning equipment and storage media

Abstract

This disclosure discloses a method, apparatus, and system for controlling multiple air conditioning devices, as well as air conditioning equipment and a storage medium. The method includes: determining whether the multiple air conditioning system is in a state without central control; when the system is in this state, acquiring the average ambient temperature and a set temperature; determining the number of air conditioning devices to be turned on based on the average ambient temperature and the set temperature; and determining whether the current air conditioning device needs to operate based on the number of devices turned on and the operating time of all air conditioning devices in the system. The multiple air conditioning system includes a central control device and multiple air conditioning devices, and the control method is executed by a control device located on the current air conditioning device. In the state where the multiple air conditioning system is in a state without central control, the air conditioning devices within the system can automatically control their on / off states and maintain the ambient temperature.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning control technology, and in particular to a method, apparatus and system for controlling multiple air conditioning devices, air conditioning equipment and storage medium. Background Technology

[0002] In multi-device environmental control systems, related technologies typically involve multiple air conditioning units. These air conditioners are connected to a communication bus and are centrally controlled by a central control unit. The central control unit issues commands to start one or more air conditioning units to maintain the ambient temperature within the space. Summary of the Invention

[0003] The inventors discovered through research that, because all air conditioning equipment in the system is controlled by a central control unit, if the central control unit malfunctions and cannot send control commands, the entire system will be paralyzed. Repairing or even replacing the central control unit is required for the system to continue operating.

[0004] This disclosure provides a method, apparatus, and system for controlling multiple air conditioning devices, as well as air conditioning devices and a storage medium. In the absence of a central control system, the air conditioning devices within the system can automatically control their on / off cycles and maintain the ambient temperature.

[0005] According to one aspect of this disclosure, a method for controlling multiple air conditioning devices is provided, comprising:

[0006] Determine whether a multi-air conditioning system is in a state without a central control;

[0007] When multiple air conditioning systems are in a state without a central control, obtain the average ambient temperature and the set temperature;

[0008] The number of air conditioning units to be turned on is determined based on the average ambient temperature and the set temperature.

[0009] Based on the number of air conditioning units turned on and the operating time of all air conditioning units in the multi-air conditioning system, it is determined whether the current air conditioning unit needs to be operated. The multi-air conditioning system includes a central control device and multiple air conditioning units. The multi-air conditioning unit control method is executed by a control device, which is set on the current air conditioning unit.

[0010] In some embodiments of this disclosure, determining whether a current air conditioning unit needs to operate based on the number of air conditioning units turned on and the operating time of all air conditioning units in a multi-air conditioning system includes:

[0011] Determine which air conditioning units need to be turned on based on the number of air conditioning units in operation and the operating time of all air conditioning units in the multi-air conditioning system.

[0012] Based on the current operating time of the air conditioning equipment and the air conditioning equipment that needs to be turned on, determine whether the current air conditioning equipment needs to be operated.

[0013] In some embodiments of this disclosure, determining the air conditioning equipment to be turned on based on the number of air conditioning units turned on and the operating time of all air conditioning units in the multi-air conditioning system includes:

[0014] Obtain the operating time of all air conditioning equipment in a multi-air conditioning system;

[0015] Sort all air conditioning equipment according to the operating time of all air conditioning equipment in the multi-air conditioning system;

[0016] The N air conditioning units with the shortest running time are selected as the air conditioning units that need to be turned on, where N is the number of air conditioning units to be turned on.

[0017] In some embodiments of this disclosure, determining whether the current air conditioning unit needs to be operated based on its current operating time and the air conditioning units that need to be turned on includes:

[0018] Determine whether the current air conditioning unit belongs to the top N air conditioning units with the shortest operating time based on the current operating time of the air conditioning unit;

[0019] If the current air conditioning unit is among the N air conditioning units with the shortest operating time, control the operation of the current air conditioning unit.

[0020] If the current air conditioning unit is not among the N air conditioning units with the shortest operating time, control the current air conditioning unit to not operate.

[0021] In some embodiments of this disclosure, obtaining the operating time of all air conditioning devices within a multi-air conditioning system includes:

[0022] Get the current running time of the air conditioning equipment;

[0023] The operating time of other air conditioning devices is obtained from the communication bus. The other air conditioning devices are other air conditioning devices in the multi-air conditioning system besides the current air conditioning device. The main control device and the multiple air conditioning devices communicate through the communication bus.

[0024] In some embodiments of this disclosure, sorting all air conditioning devices according to their operating times within the multi-air conditioning system includes:

[0025] Determine if there are any shutdown faults in other air conditioning equipment;

[0026] If there are no downtime faults in other air conditioning equipment, sort all air conditioning equipment in ascending order according to the operating time of all air conditioning equipment in the multi-air conditioning system.

[0027] In the event of shutdown failures in other air conditioning equipment, all non-shutdown air conditioning equipment in the multi-air conditioning system are sorted in ascending order based on their operating time.

[0028] In some embodiments of this disclosure, sorting all air conditioning devices according to their operating times within the multi-air conditioning system includes:

[0029] For air conditioning equipment in multiple air conditioning systems with the same operating time, the air conditioning equipment with the same operating time is sorted in ascending order according to the air conditioning equipment identification.

[0030] In some embodiments of this disclosure, determining whether the multi-air conditioning system is in a state without a central control includes:

[0031] Check for communication faults in the central control unit of the multi-air conditioning system;

[0032] If there is a communication failure in the central control unit, is the multi-air conditioning system in a state without central control?

[0033] In some embodiments of this disclosure, obtaining the average ambient temperature and the set temperature includes:

[0034] Obtain the ambient temperature currently collected by the air conditioning equipment;

[0035] The ambient temperature collected by other air conditioning devices is obtained from the communication bus. The other air conditioning devices are other air conditioning devices in the multi-air conditioning system besides the current air conditioning device. The central control device and the multiple air conditioning devices communicate through the communication bus.

[0036] Determine the average ambient temperature based on the ambient temperature collected by the current air conditioning equipment and the ambient temperatures collected by other air conditioning equipment;

[0037] The temperature setting value issued by the central control unit before the communication failure is used as the set temperature.

[0038] In some embodiments of this disclosure, determining the number of air conditioning units to be turned on based on the average ambient temperature and the set temperature includes:

[0039] The temperature deviation value is determined based on the average ambient temperature and the set temperature.

[0040] The number of air conditioning units to be turned on is determined based on the temperature deviation value and the predetermined temperature control rules.

[0041] In some embodiments of this disclosure, when the multiple air conditioning systems are in a state without a central control, the multiple air conditioning equipment control method further includes:

[0042] Determine if the current air conditioning equipment has a shutdown fault;

[0043] In the event that the current air conditioning unit has a shutdown fault, control the current air conditioning unit to stop operating;

[0044] If the air conditioning equipment is not experiencing any downtime issues, proceed with the steps of obtaining the average ambient temperature and the set temperature.

[0045] According to another aspect of this disclosure, a control device is provided, comprising:

[0046] The status judgment module is configured to determine whether the multi-air conditioning system is in a state without a central control.

[0047] The temperature acquisition module is configured to acquire the average ambient temperature and the set temperature when multiple air conditioning systems are in a state without a central control.

[0048] The module for determining the number of units to be turned on is configured to determine the number of air conditioning units to be turned on based on the average ambient temperature and the set temperature.

[0049] The operation control module is configured to determine whether the current air conditioning unit needs to be operated based on the number of air conditioning units turned on and the operating time of all air conditioning units in the multi-air conditioning system. The multi-air conditioning system includes a central control device and multiple air conditioning units, with the control device located on the current air conditioning unit.

[0050] In some embodiments of this disclosure, the operation control module includes an air conditioning start-up determination unit and an operation control unit, wherein:

[0051] The air conditioning activation determination unit is configured to determine the air conditioning equipment that needs to be activated based on the number of air conditioning units turned on and the operating time of all air conditioning units in the multi-air conditioning system.

[0052] The operation control unit is configured to determine whether the current air conditioning unit needs to be operated based on the current operating time of the air conditioning unit and the air conditioning units that need to be turned on.

[0053] In some embodiments of this disclosure, the air conditioning determination unit is configured to obtain the operating time of all air conditioning devices in a multi-air conditioning system; sort all air conditioning devices according to their operating time; and select the N air conditioning devices with the shortest operating time as the air conditioning devices to be turned on, where N is the number of air conditioning devices to be turned on.

[0054] In some embodiments of this disclosure, the operation control unit is configured to determine whether the current air conditioning device belongs to the top N air conditioning devices with the shortest operating time based on the current operating time of the air conditioning device; if the current air conditioning device belongs to the top N air conditioning devices with the shortest operating time, control the current air conditioning device to operate; if the current air conditioning device does not belong to the top N air conditioning devices with the shortest operating time, control the current air conditioning device not to operate.

[0055] In some embodiments of this disclosure, the air conditioning determination unit is configured to, upon obtaining the operating time of the current air conditioning device in the case of obtaining the operating time of all air conditioning devices in the multi-air conditioning system, obtain the operating time of other air conditioning devices from the communication bus, wherein the other air conditioning devices are other air conditioning devices in the multi-air conditioning system besides the current air conditioning device, and the central control device and the multiple air conditioning devices communicate through the communication bus.

[0056] In some embodiments of this disclosure, the air conditioning determination unit is configured to, when sorting all air conditioning devices according to their operating times in a multi-air conditioning system, determine whether there is a shutdown fault in other air conditioning devices; if there is no shutdown fault in other air conditioning devices, sort all air conditioning devices in ascending order according to their operating times in the multi-air conditioning system; if there is a shutdown fault in other air conditioning devices, sort all air conditioning devices in ascending order according to their operating times in the multi-air conditioning system.

[0057] In some embodiments of this disclosure, the air conditioning determination unit is configured to, when sorting all air conditioning devices according to their operating times in a multi-air conditioning system, sort the air conditioning devices with the same operating time in the multi-air conditioning system in ascending order according to their air conditioning device identifiers.

[0058] In some embodiments of this disclosure, the status judgment module is configured to detect whether there is a communication failure of the central control device in the multi-air conditioning system, wherein the multi-air conditioning system includes a central control device and multiple air conditioning devices; if there is a communication failure of the central control device, the multi-air conditioning system is in a state without central control.

[0059] In some embodiments of this disclosure, the temperature acquisition module is configured to acquire the ambient temperature collected by the current air conditioning device; acquire the ambient temperature collected by other air conditioning devices from the communication bus, wherein the other air conditioning devices are other air conditioning devices in a multi-air conditioning system besides the current air conditioning device, and the central control device and the multiple air conditioning devices communicate through the communication bus; determine the average ambient temperature based on the ambient temperature collected by the current air conditioning device and the ambient temperatures collected by the other air conditioning devices; and use the temperature setpoint issued by the central control device before the communication failure as the set temperature.

[0060] In some embodiments of this disclosure, the module for determining the number of units to be turned on is configured to determine a temperature deviation value based on the average ambient temperature and a set temperature; and to determine the number of air conditioning units to be turned on based on the temperature deviation value and a predetermined temperature control rule.

[0061] In some embodiments of this disclosure, the control device further includes:

[0062] The shutdown fault judgment module is configured to determine whether the current air conditioning equipment has a shutdown fault when multiple air conditioning systems are in a state without a central control; if the current air conditioning equipment has a shutdown fault, control the current air conditioning equipment to stop operating; if the current air conditioning equipment does not have a shutdown fault, instruct the temperature acquisition module to perform the operation of acquiring the average ambient temperature and the set temperature.

[0063] According to another aspect of this disclosure, a control device is provided, comprising:

[0064] The memory is configured to store instructions;

[0065] A processor, coupled to a memory, is configured to execute instructions stored in the memory to implement the multi-air conditioning device control method as described in any of the above embodiments.

[0066] According to another aspect of this disclosure, an air conditioning device is provided, including a control device as described in any of the above embodiments.

[0067] According to another aspect of this disclosure, a multi-air conditioning system is provided, including a central control unit and a plurality of air conditioning devices as described in any of the above embodiments.

[0068] According to another aspect of this disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions that, when executed by a processor, implement the control method as described in any of the above embodiments.

[0069] Based on the aspects provided in this disclosure, in the absence of a central control in a multi-air conditioning system, the air conditioning equipment within the system can automatically control its on / off operation and maintain the ambient temperature.

[0070] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0071] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this disclosure, illustrate exemplary embodiments of the present disclosure and are used to explain the disclosure, but do not constitute an undue limitation of the disclosure. In the drawings:

[0072] Figure 1 This is a schematic diagram of some embodiments of the multiple air conditioning systems disclosed herein.

[0073] Figure 2 This is a schematic diagram of some embodiments of the air conditioning equipment disclosed herein.

[0074] Figure 3 This is a schematic diagram of some embodiments of the multi-air conditioning equipment control method disclosed herein.

[0075] Figure 4 This is a schematic diagram of some other embodiments of the multi-air conditioning equipment control method disclosed herein.

[0076] Figure 5 This is a schematic diagram of some embodiments of the control device disclosed herein.

[0077] Figure 6 This is a schematic diagram of some embodiments of the operation control module of this disclosure.

[0078] Figure 7 This is a schematic diagram of the structure of some other embodiments of the control device disclosed herein. Detailed Implementation

[0079] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0080] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0081] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0082] Figure 1 This is a schematic diagram of some embodiments of the multiple air conditioning systems disclosed herein. For example... Figure 1 As shown, the multi-air conditioning system disclosed herein may include a communication bus, a central control device, and multiple air conditioning units.

[0083] In some embodiments of this disclosure, the multi-air conditioning system can be a multi-air conditioning equipment environmental control system.

[0084] In some embodiments of this disclosure, such as Figure 1 As shown, devices connected to the communication bus can communicate with each other. All air conditioning equipment and the central control unit in the environmental control system are connected to this communication bus, thus enabling communication between all devices.

[0085] In some embodiments of this disclosure, such as Figure 1 As shown, multiple air conditioning devices can be air conditioner 1, air conditioner 2, air conditioner 3, air conditioner 4, air conditioner 5, air conditioner 6, ..., air conditioner n.

[0086] In some embodiments of this disclosure, the air conditioning equipment in the environmental control system periodically broadcasts its unit ID, collected ambient temperature, running time t, and fault shutdown information to the communication bus after power-on, and receives information sent by other devices on the bus in real time.

[0087] In some embodiments of this disclosure, each air conditioning device in the environmental control system can be configured to determine whether the multiple air conditioning systems are in a state without central control; when the multiple air conditioning systems are in a state without central control, obtain the average ambient temperature and the set temperature; determine the number of air conditioning devices to be turned on based on the average ambient temperature and the set temperature; and determine whether the current air conditioning device (this air conditioning device) needs to be operated based on the number of air conditioning devices to be turned on and the running time of all air conditioning devices in the multiple air conditioning systems.

[0088] Figure 1The diagram illustrates a multi-device environmental control system network disclosed herein, in which all air conditioning units are located in the same space. A multi-device environmental control system refers to a space requiring multiple air conditioning units to operate simultaneously for ambient temperature regulation, such as a large antenna radome or a large warehouse. In this system, all air conditioning units, including the central control unit, are connected to a communication bus to enable communication between them. After power-on, the units (air conditioning units) periodically send their own information to the communication bus, such as unit ID, cumulative operating time, collected ambient temperature, and fault shutdown information.

[0089] In some embodiments of this disclosure, each air conditioning unit in the environmental control system can be configured to perform actions that can be simply divided into four processes: (1) detecting its own various environmental data and fault data; (2) sending its own various data information to the communication bus; (3) obtaining data information from other units from the communication bus; and (4) making a start-up / shutdown judgment based on its own data information and the obtained data information.

[0090] In the above embodiments of this disclosure, when the air conditioning equipment detects that the central control device cannot send control commands, the air conditioning equipment in the system can automatically control its start-up and shutdown and maintain the ambient temperature, thereby greatly enhancing the reliability of the environmental control system.

[0091] Figure 2 This is a schematic diagram of some embodiments of the air conditioning equipment disclosed herein. For example... Figure 2 As shown, each air conditioning unit 200 in the environmental control system includes a control device 210, wherein:

[0092] The control device 210 can be configured to determine whether the multiple air conditioning systems are in a state without a master control; when the multiple air conditioning systems are in a state without a master control, to obtain the average ambient temperature and the set temperature; to determine the number of air conditioning units to be turned on based on the average ambient temperature and the set temperature; and to determine whether the current air conditioning unit (the air conditioning unit where the control device is located) needs to be operated based on the number of air conditioning units to be turned on and the running time of all air conditioning units in the multiple air conditioning systems.

[0093] The above embodiments of the present disclosure allow the environmental control system to still control ambient temperature even without a central control unit, greatly increasing the reliability of the environmental control system.

[0094] In the embodiments described above, the environmental control system can still operate when the main control device is powered off for maintenance, increasing the flexibility of maintenance.

[0095] The present disclosure of a multi-air conditioning equipment control method and control device is described below through specific embodiments.

[0096] Figure 3This is a schematic diagram of some embodiments of the multi-air conditioning equipment control method of this disclosure. Preferably, this embodiment can be executed by the control device or the air conditioning equipment of this disclosure. The method may include at least one of steps 1 to 4, wherein:

[0097] Step 1: Determine whether the multi-air conditioning system is in a state without a central control.

[0098] In some embodiments of this disclosure, step 1 may include: detecting whether there is a communication failure of the central control device in the multiple air conditioning systems; if there is a communication failure of the central control device, determining whether the multiple air conditioning systems are in a state without central control.

[0099] Step 2: When the multiple air conditioning systems are in a state without a central control, obtain the average ambient temperature and the set temperature.

[0100] In some embodiments of this disclosure, step 2, the step of obtaining the average ambient temperature and the set temperature, may include at least one of steps 21 to 24, wherein: [the steps include:]

[0101] Step 21: Obtain the ambient temperature collected by the current air conditioning equipment.

[0102] Step 22: Obtain the ambient temperature T collected by other air conditioning devices from the communication bus. 环n , among which, T 环n This indicates the ambient temperature collected by other air conditioning units on the communication bus received by the current air conditioning unit (this unit), where n represents the air conditioning ID (identifier) ​​number. The other air conditioning units refer to other air conditioning units in the multi-air conditioning system besides the current air conditioning unit. The central control device and multiple air conditioning units communicate through the communication bus.

[0103] In some embodiments of this disclosure, each air conditioning unit in the environmental control system has a unique ID number. For example... Figure 1 In this embodiment, the ID number of the air conditioning equipment ranges from 1 to n.

[0104] Step 23, based on the ambient temperature T collected by the current air conditioning unit and the ambient temperature T collected by other air conditioning units... 环n Determine the average ambient temperature T 平均 .

[0105] In some embodiments of this disclosure, step 24 may include: the current air conditioning unit sums the ambient temperature it collects and the ambient temperature received from other air conditioning units and takes the average value.

[0106] Step 24: Use the temperature setpoint issued by the central control device before the communication failure as the setpoint temperature T. 设定 .

[0107] In some embodiments of this disclosure, when the multiple air conditioning systems are in a state without a central control, the multiple air conditioning equipment control method may further include: determining whether the current air conditioning equipment has a shutdown fault; if the current air conditioning equipment has a shutdown fault, controlling the current air conditioning equipment not to operate; if the current air conditioning equipment does not have a shutdown fault, performing the steps of obtaining the average ambient temperature and the set temperature.

[0108] Step 3, based on the average ambient temperature T 平均 and set temperature T 设定 Determine the number N of air conditioning units to be turned on, where N is the number of air conditioners that should be turned on under the current ambient temperature (average ambient temperature) and the set temperature, N is less than or equal to n, and n is the total number of air conditioners in the current multi-air conditioning system.

[0109] In some embodiments of this disclosure, step 3 may include at least one of steps 31 to 32, wherein: it includes:

[0110] Step 31, based on the average ambient temperature T 平均 and set temperature T 设定 Determine the temperature deviation value T 差 .

[0111] In some embodiments of this disclosure, step 31 may include: based on the average ambient temperature T 平均 and set temperature T 设定 The difference determines the temperature deviation value T. 差 .

[0112] Step 32, based on the temperature deviation value T 差 Based on the predetermined temperature control rules, determine the number N of air conditioning units to be turned on.

[0113] In some embodiments of this disclosure, the predetermined temperature control rule is derived experimentally from different temperature values ​​(T). 差 The correspondence between the number of machines turned on, N.

[0114] Step 4: Based on the number of air conditioning units turned on and the operating time of all air conditioning units in the multi-air conditioning system, determine whether the current air conditioning unit needs to be operated. The multi-air conditioning system includes a central control device and multiple air conditioning units. The multi-air conditioning unit control method is executed by a control device, which is set on the current air conditioning unit.

[0115] In some embodiments of this disclosure, step 4 may include at least one of steps 41 to 44, wherein:

[0116] Step 41: Determine which air conditioning units need to be turned on based on the number of air conditioning units turned on and the operating time of all air conditioning units in the multi-air conditioning system.

[0117] In some embodiments of this disclosure, step 41 may include at least one of steps 411 to 413, wherein:

[0118] Step 411: Obtain the running time of all air conditioning equipment in the multi-air conditioning system.

[0119] In some embodiments of this disclosure, step 411 may include: obtaining the current operating time t of the air conditioning device, where t is the cumulative operating time of the current air conditioning device itself; and obtaining the operating time t of other air conditioning devices from the communication bus. n , where t n The cumulative operating time of other air conditioning devices obtained from the communication bus is denoted by n, which represents the air conditioning ID number. The other air conditioning devices refer to other air conditioning devices in the multi-air conditioning system besides the current air conditioning device. The central control device and multiple air conditioning devices communicate through the communication bus.

[0120] Step 412: Sort all air conditioning equipment according to the operating time of all air conditioning equipment in the multi-air conditioning system.

[0121] In some embodiments of this disclosure, step 412 may include: determining whether there is a shutdown fault in other air conditioning equipment; if there is no shutdown fault in other air conditioning equipment, sorting all air conditioning equipment in ascending order according to the running time of all air conditioning equipment in the multi-air conditioning system; if there is a shutdown fault in other air conditioning equipment, sorting all air conditioning equipment without shutdown fault in ascending order according to the running time of all air conditioning equipment without shutdown fault in the multi-air conditioning system.

[0122] In some embodiments of this disclosure, step 412 may include: sorting the current air conditioning device's cumulative operating time and the cumulative operating times of other air conditioning devices in ascending order to obtain a sequence K[i]. During the sorting process, if a faulty air conditioning device is detected, it is not included in the sorting.

[0123] In other embodiments of this disclosure, step 412 may include: for air conditioning devices in multiple air conditioning systems with the same operating time, sorting the air conditioning devices with the same operating time in ascending order according to the air conditioning device identifier.

[0124] The air conditioning equipment in the above embodiments of this disclosure can obtain the operating time of any air conditioning device on the bus. In the environmental control system of this disclosure, a single device can obtain the operating time of any air conditioning device on the bus and perform calculations.

[0125] Step 413: Select the N air conditioning devices with the shortest running time as the air conditioning devices that need to be turned on, where N is the number of air conditioning devices to be turned on, that is, N is the number of air conditioning devices that should be turned on under the current ambient temperature and the set temperature.

[0126] Step 42: Based on the current operating time of the air conditioning equipment and the air conditioning equipment that needs to be turned on, determine whether the current air conditioning equipment needs to be operated.

[0127] In some embodiments of this disclosure, step 42 may include at least one of steps 421 to 423, wherein:

[0128] Step 421: Determine whether the current air conditioning unit belongs to the top N air conditioning units with the shortest operating time based on the current operating time of the air conditioning unit.

[0129] Step 422: If the current air conditioning unit is among the N air conditioning units with the shortest running time, control the operation of the current air conditioning unit.

[0130] Step 423: If the current air conditioning unit is not among the N air conditioning units with the shortest running time, control the current air conditioning unit not to run.

[0131] The embodiments of this disclosure can calculate the number of units that need to be turned on based on the temperature difference, and determine whether the air conditioning unit is one of the units that needs to be turned on. In the embodiments of this disclosure, multiple air conditioning units start and stop automatically, and not all units are turned on.

[0132] Figure 4 The diagram illustrates further embodiments of the multi-air conditioning device control method of this disclosure. Preferably, this embodiment can be executed by the control device, air conditioning equipment, or multi-air conditioning system of this disclosure. The multi-air conditioning device control method of this disclosure is applicable to... Figure 1 The illustrated multi-device environmental control system network places all air conditioning units in the same space. A multi-device environmental control system refers to a space where multiple air conditioning units need to operate simultaneously to regulate ambient temperature, such as a large antenna radome or a large warehouse. In this system, all air conditioning units, including the central control unit, are connected to a communication bus to enable communication between them. After power-on, each unit periodically sends its own information to the communication bus, such as unit ID, cumulative operating time, collected ambient temperature, and fault shutdown information.

[0133] Figure 4 The method of the embodiment may include at least one of steps 101 to 111, wherein:

[0134] Step 101: After the current air conditioning unit (this unit) is powered on, perform a communication fault detection for the central control device.

[0135] Step 102: Determine if there is a communication fault between the air conditioning unit and the central control unit. If there is no communication fault, proceed to step 103; otherwise, if a communication fault is detected in the central control unit, proceed to step 104.

[0136] Step 103: The current air conditioning unit enters normal control mode, executes control commands sent by the central control unit, and obeys the power on / off commands from the central control unit. Then, step 101 is executed repeatedly.

[0137] Step 104: Check if the unit has a shutdown fault. If there is a shutdown fault, proceed to step 111, and the unit will not run; if there is no shutdown fault, proceed to step 105.

[0138] Step 105: Obtain the ambient temperature T collected by other air conditioning units from the communication bus. 环n Calculate the average ambient temperature T 平均 .

[0139] In some embodiments of this disclosure, step 24 may include: the current air conditioning unit sums its collected ambient temperature and the received ambient temperatures from other air conditioning units, and calculates the average ambient temperature T. 平均 .

[0140] Step 106, based on the average ambient temperature T 平均 The temperature setpoint T issued by the central control unit before the communication failure 设定 By comparison, the temperature deviation value T is obtained. 差 According to the temperature deviation value T 差 Based on the predetermined temperature control rules, determine the number N of air conditioning units to be turned on.

[0141] In some embodiments of this disclosure, step 106 may include: based on the average ambient temperature T 平均 and temperature setpoint T 设定 The difference determines the temperature deviation value T. 差 .

[0142] In some embodiments of this disclosure, the predetermined temperature control rule is derived experimentally from different temperature values ​​(T). 差 The correspondence between the number of machines turned on, N.

[0143] Step 107: Receive the running time t of other air conditioning units (other air conditioning equipment). n The sequence K[i] is obtained by sorting the current air conditioning equipment in ascending order with its own running time. If other air conditioning equipment is detected to be faulty and shut down during the sorting process, the faulty air conditioning equipment will not be included in the sort.

[0144] In some embodiments of this disclosure, step 107 may include: sorting the current air conditioning device’s own cumulative running time and the cumulative running time of other air conditioning devices in ascending order to obtain a sequence K[i]; then, before sorting, determining whether other air conditioning devices have shutdown faults, and the running time of air conditioning devices with shutdown faults is not included in the sorting.

[0145] Step 108: If air conditioning devices have the same running time, sort them in ascending order based on their air conditioning device IDs. Then proceed to step 109.

[0146] In some embodiments of this disclosure, step 108 may include: for air conditioning devices in multiple air conditioning systems with the same operating time, sorting the air conditioning devices with the same operating time in ascending order according to the air conditioning device identifier.

[0147] Step 109: Determine whether the current air conditioner is among the N air conditioners with the shortest operating time based on its current running time. If it is, proceed to step 110; otherwise, proceed to step 111.

[0148] In some embodiments of this disclosure, step 109 may include: determining whether the current operating time of the air conditioning device is among the first N in the sequence K[i] based on the current operating time of the air conditioning device.

[0149] Step 110: Unit starts running; then step 101 is executed repeatedly.

[0150] Step 111: The unit does not run; then step 101 is executed repeatedly.

[0151] The above embodiments of this disclosure provide a method for starting and stopping multiple air conditioning units in a state without a central control unit.

[0152] In the embodiments described above, when the air conditioning equipment detects that the central control device cannot send control commands, the air conditioning equipment in the system can automatically control its start-up and shutdown and maintain the ambient temperature, thereby greatly enhancing the reliability of the environmental control system.

[0153] In the embodiments described above, the environmental control system can still operate when the main control device is powered off for maintenance, increasing the flexibility of maintenance.

[0154] Figure 5 These are schematic diagrams illustrating some embodiments of the control device disclosed herein. For example... Figure 5 As shown, the control device disclosed herein may include a status judgment module 51, a temperature acquisition module 52, a start-up quantity determination module 53, and an operation control module 54, wherein:

[0155] The status judgment module 51 is configured to determine whether the multi-air conditioning system is in a state without a central control.

[0156] In some embodiments of this disclosure, the state judgment module 51 is configured to detect whether there is a communication failure of the central control device in the multi-air conditioning system, wherein the multi-air conditioning system includes a central control device and multiple air conditioning devices; if there is a communication failure of the central control device, the multi-air conditioning system is in a state without central control.

[0157] Temperature acquisition module 52 is configured to acquire the average ambient temperature and set temperature when the multi-air conditioning system is in a state without a central control.

[0158] In some embodiments of this disclosure, the temperature acquisition module 52 can be configured to acquire the ambient temperature collected by the current air conditioning device; acquire the ambient temperature collected by other air conditioning devices from the communication bus, wherein the other air conditioning devices are other air conditioning devices in a multi-air conditioning system besides the current air conditioning device, and the central control device and the multiple air conditioning devices communicate through the communication bus; determine the average ambient temperature based on the ambient temperature collected by the current air conditioning device and the ambient temperatures collected by other air conditioning devices; and use the temperature setpoint issued by the central control device before the communication failure as the set temperature.

[0159] The start-up quantity determination module 53 is configured to determine the number of air conditioning units to be turned on based on the average ambient temperature and the set temperature.

[0160] In some embodiments of this disclosure, the start-up quantity determination module 53 can be configured to determine a temperature deviation value based on the average ambient temperature and a set temperature; and determine the start-up quantity of air conditioning equipment based on the temperature deviation value and a predetermined temperature control rule.

[0161] The operation control module 54 is configured to determine whether the current air conditioning device needs to be operated based on the number of air conditioning devices turned on and the operating time of all air conditioning devices in the multi-air conditioning system. The multi-air conditioning system includes a central control device and multiple air conditioning devices, and the control device is located on the current air conditioning device.

[0162] In some embodiments of this disclosure, such as Figure 5 As shown, the control device may further include a shutdown fault judgment module 55, wherein:

[0163] The shutdown fault judgment module 55 is configured to determine whether the current air conditioning equipment has a shutdown fault when the multiple air conditioning systems are in a state without a central control; if the current air conditioning equipment has a shutdown fault, instruct the operation control module 54 to control the current air conditioning equipment to stop operating; if the current air conditioning equipment does not have a shutdown fault, instruct the temperature acquisition module 52 to perform the operation of acquiring the average ambient temperature and the set temperature.

[0164] Figure 6 These are schematic diagrams illustrating some embodiments of the operation control module of this disclosure. For example... Figure 6As shown, this disclosure includes an operation control module (e.g., Figure 5 The operation control module 54) of the embodiment may include an air conditioning start determination unit 541 and an operation control unit 542, wherein:

[0165] The air conditioning activation determination unit 541 is configured to determine the air conditioning equipment that needs to be activated based on the number of air conditioning devices turned on and the operating time of all air conditioning devices in the multi-air conditioning system.

[0166] In some embodiments of this disclosure, the air conditioning determination unit 541 can be configured to obtain the operating time of all air conditioning devices in a multi-air conditioning system; sort all air conditioning devices according to their operating time; and select the N air conditioning devices with the shortest operating time as the air conditioning devices to be turned on, where N is the number of air conditioning devices to be turned on.

[0167] In some embodiments of this disclosure, the air conditioning determination unit 541 can be configured to obtain the operating time of the current air conditioning device when the operating time of all air conditioning devices in the multi-air conditioning system is obtained; and to obtain the operating time of other air conditioning devices from the communication bus, wherein the other air conditioning devices are other air conditioning devices in the multi-air conditioning system other than the current air conditioning device, and the central control device and the multiple air conditioning devices communicate through the communication bus.

[0168] In some embodiments of this disclosure, the air conditioning determination unit 541 can be configured to, when sorting all air conditioning devices according to their operating times in a multi-air conditioning system, determine whether there is a shutdown fault in other air conditioning devices; if there is no shutdown fault in other air conditioning devices, sort all air conditioning devices in ascending order according to their operating times in the multi-air conditioning system; if there is a shutdown fault in other air conditioning devices, sort all non-shutdown fault air conditioning devices in ascending order according to their operating times in the multi-air conditioning system.

[0169] In some embodiments of this disclosure, the air conditioning determination unit 541 can be configured to, when sorting all air conditioning devices according to their operating time in a multi-air conditioning system, sort the air conditioning devices with the same operating time in the multi-air conditioning system in ascending order according to their air conditioning device identifiers.

[0170] The operation control unit 542 is configured to determine whether the current air conditioning equipment needs to be operated based on the current operating time of the air conditioning equipment and the air conditioning equipment that needs to be turned on.

[0171] In some embodiments of this disclosure, the operation control unit 542 can be configured to determine whether the current air conditioning device belongs to the top N air conditioning devices with the shortest operating time based on the current operating time of the air conditioning device; if the current air conditioning device belongs to the top N air conditioning devices with the shortest operating time, control the current air conditioning device to operate; if the current air conditioning device does not belong to the top N air conditioning devices with the shortest operating time, control the current air conditioning device not to operate.

[0172] In the above embodiments of the present disclosure, multiple air conditioning units in a multi-device environmental control system can maintain the ambient temperature without a central control; and the reliability of the multi-air conditioning unit environmental control system is increased.

[0173] Figure 7 This is a schematic diagram of the structure of some other embodiments of the control device disclosed herein. For example... Figure 7 As shown, the control device includes a memory 71 and a processor 72.

[0174] Memory 71 is used to store instructions, and processor 72 is coupled to memory 71. Processor 72 is configured to execute instructions stored in memory as described in any of the above embodiments (e.g., Figures 3 to 4 The multi-air conditioning equipment control method described in any of the embodiments.

[0175] like Figure 7 As shown, the control device also includes a communication interface 73 for exchanging information with other devices. Additionally, the control device includes a bus 74, through which the processor 72, communication interface 73, and memory 71 communicate with each other.

[0176] The memory 71 may include high-speed RAM, and may also include non-volatile memory, such as at least one disk drive. The memory 71 may also be a memory array. The memory 71 may also be divided into blocks, and these blocks may be combined into virtual volumes according to certain rules.

[0177] Furthermore, processor 72 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present disclosure.

[0178] In the embodiments described above, when the current air conditioner (unit) detects a state without central control, it enters a state without central control operation. In this state, the unit first performs a self-shutdown fault assessment. If a shutdown fault is detected, the unit stops operating and returns to the state without central control. If no shutdown fault is detected, the unit obtains the ambient temperature collected by other air conditioning devices from the communication bus and calculates the average ambient temperature Taverage. The average Taverage is compared with the temperature set before the central control communication was interrupted to obtain the temperature deviation Tdifference. Then, based on the Tdifference and the established temperature control rules, the number N of air conditioning devices to be turned on is determined. The received running times of other air conditioning units and the unit's own running time are sorted in ascending order to obtain a sequence K[i]. If a fault shutdown alarm is received from another air conditioning unit, it is not included in the sorting. If the running times are the same, they are sorted in ascending order according to the unit ID number. Then, it is determined whether its own running time is among the first N units in the sequence K[i]. If it is, the unit is turned on; otherwise, the unit is turned off. Then, it continues to operate from the state without central control.

[0179] According to another aspect of this disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions that, when executed by a processor, implement any of the embodiments described above (e.g., Figures 3 to 4 The control method described in any of the embodiments.

[0180] In some embodiments of this disclosure, the computer-readable storage medium may be implemented as a non-transitory computer-readable storage medium.

[0181] The above embodiments of the present disclosure allow the environmental control system to still control the ambient temperature even without a central control unit, greatly increasing the reliability of the environmental control system.

[0182] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, apparatus, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0183] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0184] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0185] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0186] The control device, status judgment module, temperature acquisition module, start-up quantity determination module, operation control module, and shutdown fault judgment module described above can be implemented as a general-purpose processor, programmable logic controller (PLC), digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described in this application.

[0187] This concludes the detailed description of the present disclosure. To avoid obscuring the concept of the disclosure, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0188] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware, or by a program instructing the relevant hardware to implement them. The program can be stored in a non-transitory computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0189] The description in this disclosure is provided for illustrative and descriptive purposes only and is not intended to be exhaustive or to limit the disclosure to its forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of this disclosure and to enable those skilled in the art to understand this disclosure and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A method for controlling multiple air conditioning units, executed by a control device, wherein the control device is installed in each air conditioning unit of a multi-air conditioning system, the multi-air conditioning system including a central control device and multiple air conditioning units, and the control device of each air conditioning unit executes the multi-air conditioning unit control method, the multi-air conditioning unit control method comprising: Determine whether a multi-air conditioning system is in a state without a central control; When multiple air conditioning systems are in a state without a central control, obtain the average ambient temperature and the set temperature; The number of air conditioning units to be turned on is determined based on the average ambient temperature and the set temperature. The operating time of all air conditioning devices in a multi-air conditioning system is obtained, wherein all air conditioning devices include the current air conditioning device and other air conditioning devices, and the other air conditioning devices are other air conditioning devices in the multi-air conditioning system other than the current air conditioning device; Based on the number of air conditioning units turned on and the operating time of all air conditioning units in the multi-air conditioning system, it is determined whether the current air conditioning unit needs to be operated, wherein the control device is installed on the current air conditioning unit.

2. The multi-air conditioning equipment control method according to claim 1, wherein, The process of determining whether a current air conditioning unit needs to be operated based on the number of air conditioning units turned on and the operating time of all air conditioning units in a multi-air conditioning system includes: Determine which air conditioning units need to be turned on based on the number of air conditioning units in operation and the operating time of all air conditioning units in the multi-air conditioning system. Based on the current operating time of the air conditioning equipment and the air conditioning equipment that needs to be turned on, determine whether the current air conditioning equipment needs to be operated.

3. The multi-air conditioning equipment control method according to claim 2, wherein, The determination of which air conditioning equipment needs to be turned on, based on the number of air conditioning units turned on and the operating time of all air conditioning units in the multi-air conditioning system, includes: Sort all air conditioning equipment according to the operating time of all air conditioning equipment in the multi-air conditioning system; The N air conditioning units with the shortest running time are selected as the air conditioning units that need to be turned on, where N is the number of air conditioning units to be turned on.

4. The multi-air conditioning equipment control method according to claim 3, wherein determining whether the current air conditioning equipment needs to be operated based on the current operating time of the air conditioning equipment and the air conditioning equipment that needs to be turned on includes: Determine whether the current air conditioning unit belongs to the top N air conditioning units with the shortest operating time based on the current operating time of the air conditioning unit; If the current air conditioning unit is among the N air conditioning units with the shortest operating time, control the operation of the current air conditioning unit. If the current air conditioning unit is not among the N air conditioning units with the shortest operating time, control the current air conditioning unit to not operate.

5. The multi-air conditioning equipment control method according to any one of claims 1-4, wherein, The acquisition of the operating time of all air conditioning equipment in the multi-air conditioning system includes: Get the current running time of the air conditioning equipment; The operating time of other air conditioning equipment is obtained from the communication bus, wherein the central control device and multiple air conditioning equipment communicate with each other through the communication bus.

6. The multi-air conditioning equipment control method according to claim 3 or 4, wherein, The sorting of all air conditioning devices according to their operating time within the multi-air conditioning system includes: Determine if there are any shutdown faults in other air conditioning equipment; If there are no downtime faults in other air conditioning equipment, sort all air conditioning equipment in ascending order according to the operating time of all air conditioning equipment in the multi-air conditioning system. In the event of shutdown failures in other air conditioning equipment, all non-shutdown air conditioning equipment in the multi-air conditioning system are sorted in ascending order based on their operating time.

7. The multi-air conditioning equipment control method according to claim 3 or 4, wherein, The sorting of all air conditioning devices according to their operating time within the multi-air conditioning system includes: For air conditioning equipment in multiple air conditioning systems with the same operating time, the air conditioning equipment with the same operating time is sorted in ascending order according to the air conditioning equipment identification.

8. The multi-air conditioning equipment control method according to any one of claims 1-4, wherein, The determination of whether a multi-air conditioning system is in a state without a central control includes: Check for communication faults in the central control unit of the multi-air conditioning system; If there is a communication failure in the central control unit, is the multi-air conditioning system in a state without central control? 9. The multi-air conditioning equipment control method according to claim 8, wherein, The acquisition of the average ambient temperature and the set temperature includes: Obtain the ambient temperature currently collected by the air conditioning equipment; The ambient temperature collected by other air conditioning equipment is obtained from the communication bus, wherein the central control device and multiple air conditioning equipment communicate with each other through the communication bus; Determine the average ambient temperature based on the ambient temperature collected by the current air conditioning equipment and the ambient temperatures collected by other air conditioning equipment; The temperature setting value issued by the central control unit before the communication failure is used as the set temperature.

10. The multi-air conditioning equipment control method according to any one of claims 1-4, wherein, The process of determining the number of air conditioning units to be turned on based on the average ambient temperature and the set temperature includes: The temperature deviation value is determined based on the average ambient temperature and the set temperature. The number of air conditioning units to be turned on is determined based on the temperature deviation value and the predetermined temperature control rules.

11. The multi-air conditioning equipment control method according to any one of claims 1-4, wherein, When multiple air conditioning systems are in a state without a central control, the multi-air conditioning equipment control method further includes: Determine if the current air conditioning equipment has a shutdown fault; In the event that the current air conditioning unit has a shutdown fault, control the current air conditioning unit to stop operating; If the air conditioning equipment is not experiencing any downtime issues, proceed with the steps of obtaining the average ambient temperature and the set temperature.

12. A control device, said control device being disposed in each air conditioning unit of a multi-air conditioning system, said multi-air conditioning system including a central control device and multiple air conditioning units, said control device comprising: The status judgment module is configured to determine whether the multi-air conditioning system is in a state without a central control. The temperature acquisition module is configured to acquire the average ambient temperature and the set temperature when multiple air conditioning systems are in a state without a central control. The module for determining the number of units to be turned on is configured to determine the number of air conditioning units to be turned on based on the average ambient temperature and the set temperature. The operation control module is configured to acquire the operating time of all air conditioning devices in the multi-air conditioning system, wherein all air conditioning devices include the current air conditioning device and other air conditioning devices, and the other air conditioning devices are other air conditioning devices in the multi-air conditioning system besides the current air conditioning device; and determine whether the current air conditioning device needs to operate based on the number of air conditioning devices turned on and the operating time of all air conditioning devices in the multi-air conditioning system, wherein the control device is installed on the current air conditioning device.

13. The control device according to claim 12, wherein, The operation control module includes an air conditioning start-up determination unit and an operation control unit, wherein: The air conditioning activation determination unit is configured to determine the air conditioning equipment that needs to be activated based on the number of air conditioning units turned on and the operating time of all air conditioning units in the multi-air conditioning system. The operation control unit is configured to determine whether the current air conditioning unit needs to be operated based on the current operating time of the air conditioning unit and the air conditioning units that need to be turned on.

14. The control device according to claim 13, wherein, The air conditioning activation determination unit is configured to sort all air conditioning devices according to their operating time in the multi-air conditioning system; and select the N air conditioning devices with the shortest operating time as the air conditioning devices to be activated, where N is the number of air conditioning devices to be activated.

15. The control device according to claim 14, further comprising: The operation control unit is configured to determine whether the current air conditioning unit belongs to the top N air conditioning units with the shortest operating time based on the current operating time of the air conditioning unit. If the current air conditioner is among the N air conditioners with the shortest operating time, control the current air conditioner to operate; if the current air conditioner is not among the N air conditioners with the shortest operating time, control the current air conditioner to not operate.

16. The control device according to any one of claims 12-15, wherein, The air conditioning determination unit is configured to obtain the current air conditioning device's operating time when the operating time of all air conditioning devices in the multi-air conditioning system is obtained; and to obtain the operating time of other air conditioning devices from the communication bus, wherein the central control device and the multiple air conditioning devices communicate through the communication bus.

17. The control device according to claim 14 or 15, wherein, The air conditioning determination unit is configured to, when sorting all air conditioning devices according to their operating time within a multi-air conditioning system, determine whether other air conditioning devices have a shutdown fault; if no other air conditioning devices have a shutdown fault, sort all air conditioning devices in ascending order according to their operating time within the multi-air conditioning system; if other air conditioning devices have a shutdown fault, sort all non-shutdown fault air conditioning devices in ascending order according to their operating time within the multi-air conditioning system.

18. The control device according to claim 14 or 15, wherein, The air conditioning determination unit is configured to sort all air conditioning devices according to their operating time within a multi-air conditioning system, and then, for air conditioning devices with the same operating time within the multi-air conditioning system, sort them in ascending order according to their device identifier.

19. The control device according to any one of claims 12-15, wherein, The status judgment module is configured to detect whether there is a communication failure of the central control device in the multi-air conditioning system; if there is a communication failure of the central control device, it determines whether the multi-air conditioning system is in a state without central control.

20. The control device according to claim 19, wherein, The temperature acquisition module is configured to acquire the ambient temperature collected by the current air conditioning device; acquire the ambient temperature collected by other air conditioning devices from the communication bus, wherein the central control device and multiple air conditioning devices communicate through the communication bus; determine the average ambient temperature based on the ambient temperature collected by the current air conditioning device and the ambient temperatures collected by other air conditioning devices; and use the temperature setpoint issued by the central control device before the communication failure as the set temperature.

21. The control device according to any one of claims 12-15, wherein, The module for determining the number of units to be turned on is configured to determine the temperature deviation value based on the average ambient temperature and the set temperature; and to determine the number of air conditioning units to be turned on based on the temperature deviation value and the predetermined temperature control rules.

22. The control device according to any one of claims 12-15, further comprising: The shutdown fault judgment module is configured to determine whether the current air conditioning equipment has a shutdown fault when multiple air conditioning systems are in a state without a central control; if the current air conditioning equipment has a shutdown fault, control the current air conditioning equipment to stop operating; if the current air conditioning equipment does not have a shutdown fault, instruct the temperature acquisition module to perform the operation of acquiring the average ambient temperature and the set temperature.

23. A control device, comprising: The memory is configured to store instructions; A processor, coupled to a memory, is configured to implement the multi-air conditioning device control method as described in any one of claims 1 to 11 based on the execution of instructions stored in the memory.

24. An air conditioning device, comprising a control device as described in any one of claims 12 to 23.

25. A multi-air conditioning system, comprising a central control unit and a plurality of air conditioning devices as described in claim 24.

26. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the control method as described in any one of claims 1 to 11.

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