CN107270483B - Air conditioner control method and device and air conditioner system - Google Patents
Air conditioner control method and device and air conditioner system Download PDFInfo
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Abstract
The invention discloses an air conditioner control method and device and an air conditioner system. The method comprises the following steps: the air conditioner control method comprises the following steps: detecting whether new data is added in the CAN bus; if the CAN bus is detected to have new data increase, classifying the new data according to a preset data classification rule; air conditioning control is performed based on the categorized data. The invention solves the technical problem that the air conditioning system is easy to have poor expansibility when new data is added.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioner control method and device and an air conditioner system.
Background
For an air conditioning system, data transmission between different devices is usually agreed on communication rules by means of a protocol. Most air-conditioning field communication modes are RS485, and data transmission in the mode is a master-slave roll-call mode, namely, a master computer roll-calls slave computer data. Therefore, the data transmission protocol is a master-slave protocol, the master sends control frame data, the slave responds status frame data, all data are in a fixed frame format, that is, formats including a header code, an air conditioner address, valid data, a check code and a tail code, all communication timings are fixed timings, data reading needs to be performed according to specific protocol bits, an addressing range is limited to a current network, however, when new data are added, specific frames and communication timings need to be redefined, and communication compatibility, expansibility and communication efficiency are poor.
Aiming at the problem that the air conditioning system in the related art is easy to have poor expansibility when new data is added, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides an air conditioner control method and device and an air conditioner system, and at least solves the technical problem that the air conditioner system is easy to have poor expansibility when new data are added.
According to an aspect of an embodiment of the present invention, there is provided an air conditioner control method for controlling an air conditioner in a CAN communication manner, the air conditioner control method including: detecting whether new data is added in the CAN bus; if the CAN bus is detected to have new data increase, classifying the new data according to a preset data classification rule; air conditioning control is performed based on the categorized data.
Further, detecting whether there is a new data increase in the CAN bus comprises: and detecting whether new equipment is added in the CAN bus, wherein when the new equipment is added in the CAN bus, determining that new data is added in the CAN bus.
Further, the data classification of the new data according to the preset data classification rule includes: classifying the new equipment according to a preset data classification rule; and classifying the relevant data of the new device based on the classified device.
Further, the data classification of the new data according to the preset data classification rule includes: classifying the new data attribute; and/or, sorting the priority of the new data.
Further, data categorizing the attributes of the new data includes: the new data is divided into control data or status data.
Further, the data classification of the new data according to the preset data classification rule includes: and classifying the new data according to a preset CAN communication protocol frame format, wherein the CAN communication protocol frame format comprises a function code, a data type, a CAN network address and a data segment.
Further, the CAN communication protocol frame format further includes: data number, wherein, the CAN network address includes: a first CAN network address and a second CAN network address.
According to another aspect of the embodiments of the present invention, there is also provided an air conditioner control device that controls an air conditioner in a CAN communication manner, the air conditioner control device including: the detection unit is used for detecting whether new data are added in the CAN bus; the classification unit is used for classifying new data according to a preset data classification rule when the new data is detected to be added in the CAN bus; and a control unit for performing air conditioning control based on the categorized data.
Further, the detection unit is used for detecting whether new equipment is added in the CAN bus, wherein when the new equipment is added in the CAN bus, the new data addition in the CAN bus is determined.
Further, the classification unit is used for classifying according to the following method: classifying the new equipment according to a preset data classification rule; and classifying the relevant data of the new device based on the classified device.
According to another aspect of the embodiment of the invention, an air conditioning system is further provided, and the air conditioning system comprises any one of the air conditioning control devices provided by the embodiment of the invention.
According to another aspect of the embodiments of the present invention, there is also provided an air conditioning system, including a master control device and a node device, where the master control device and the node device perform data communication in a CAN communication manner, and the master control device is configured to perform control in the following manner: detecting whether new data is added in the CAN bus; if the CAN bus is detected to have new data increase, classifying the new data according to a preset data classification rule; air conditioning control is performed based on the categorized data.
In the embodiment of the invention, whether new data is added in the CAN bus is detected; if the CAN bus is detected to have new data increase, classifying the new data according to a preset data classification rule; the air-conditioning control is executed based on the classified data, and the communication of the CAN bus has no fixed time sequence, so that the expansibility of the air-conditioning system is improved, and the technical problem that the air-conditioning system is easy to have poor expansibility when new data are added is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a flowchart of an air conditioner control method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an air conditioning control apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an air conditioning system according to an embodiment of the present invention; and
fig. 4 is a schematic diagram of an alternative air conditioning system according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
According to an aspect of an embodiment of the present invention, an air conditioner control method is provided, in which an air conditioner is controlled in a Controller Area Network (CAN) communication manner.
Fig. 1 is a flowchart of an air conditioner control method according to an embodiment of the present invention. As shown in fig. 1, the air conditioner control method includes:
step S202, whether new data are added in the CAN bus is detected.
Whether new data are added in the CAN bus or not CAN be detected simply by detecting whether new data are added in the CAN bus or detecting whether new equipment are added in the CAN bus or not, namely, whether new data corresponding to the equipment are added or not, and for the latter, when the new equipment are added in the CAN bus, the new data are determined to be added in the CAN bus.
And step S204, if the new data is detected to be added in the CAN bus, classifying the new data according to a preset data classification rule.
For example, the data classification of the new data according to the preset data classification rule may be performed as follows:
and classifying the new equipment according to a preset data classification rule.
And classifying the relevant data of the new device based on the classified device.
Further, the data classification of the new data according to the preset data classification rule may include: classifying the new data attribute; and/or, sorting the priority of the new data.
Still further, data categorizing the attributes of the new data may include: the new data is divided into control data or status data. The data classifying the new data according to the preset data classification rule may include: and classifying the new data according to a preset CAN communication protocol frame format, wherein the CAN communication protocol frame format comprises a function code, a data type, a CAN network address and a data segment.
In step S206, air conditioning control is executed based on the categorized data.
In the embodiment of the present invention, the CAN communication protocol frame format further includes: data number, wherein, the CAN network address includes: a first CAN network address and a second CAN network address.
The embodiment of the invention also provides an air conditioner control device, which controls the air conditioner in a CAN communication mode. Fig. 2 is a schematic diagram of an air conditioning control apparatus according to an embodiment of the present invention, as shown in fig. 2, including: the detection unit 101 is used for detecting whether new data are added in the CAN bus; the classification unit 102 is configured to classify new data according to a preset data classification rule when it is detected that new data is added to the CAN bus; and a control unit 103 for performing air conditioning control based on the categorized data.
The air conditioner control device of the embodiment of the invention can be used for executing the air conditioner control method of the embodiment of the invention.
Optionally, the detecting unit is configured to detect whether a new device is added to the CAN bus, where when it is detected that the new device is added to the CAN bus, it is determined that new data is added to the CAN bus.
Optionally, the classification unit is configured to classify according to the following method: classifying the new equipment according to a preset data classification rule; and classifying the relevant data of the new device based on the classified device.
The embodiment of the invention also provides an air conditioner which comprises any air conditioner control device provided by the embodiment of the invention. The air conditioner of the embodiment of the invention can be an air conditioning system, for example, a multi-connected air conditioning system.
According to another aspect of the embodiments of the present invention, there is also provided an air conditioner, including a master control device and a node device, where the master control device and the node device perform data communication in a CAN communication manner, and the master control device is configured to perform control in the following manner: detecting whether new data is added in the CAN bus; if the CAN bus is detected to have new data increase, classifying the new data according to a preset data classification rule; air conditioning control is performed based on the categorized data.
In the embodiment of the invention, whether new data is added in the CAN bus is detected; if the CAN bus is detected to have new data increase, classifying the new data according to a preset data classification rule; and executing air conditioning control based on the classified data, and improving the expansibility of an air conditioning system because the communication of the CAN bus has no fixed time sequence. The control and status protocol frame based on CAN communication provided by the embodiment of the invention solves the technical problem that the air conditioning system is easy to have poor expansibility when new data is added.
Because the CAN communication mode is a multi-master mode, bus communication has no fixed time sequence, all equipment CAN send data to the bus at the same time, and the bus automatically arbitrates the data. Therefore, by dividing the data attribute, the control data and the state data are defined, and different priorities are divided, the network address can be divided in multiple levels, when new data is increased, the new data can be directly classified according to the data attribute and the priority, other data is not influenced, the expansibility and the universality are greatly increased, and the communication efficiency is improved.
The embodiment of the invention provides a CAN communication air conditioner protocol control and state data frame format, which is used for communication among different devices. In addition, the embodiment of the invention can directly classify the data with different functions by dividing the attributes of the air conditioner data, and directly classify the data with different attributes when new data is increased, thereby greatly increasing the protocol expansibility and the universality and improving the communication efficiency.
The embodiment of the invention defines a CAN communication data protocol frame format applied to an air conditioner, and the protocol frame is used for effective data transmission of the air conditioner.
Table 1 below shows a CAN protocol frame format of an embodiment of the present invention:
TABLE 1
Table 2 below shows a control or status frame format of an embodiment of the present invention:
TABLE 2
As for the CAN protocol frame format shown in table 1, the following is specifically explained:
function code: the method is used for describing the data application attribute and dividing the function of the data application attribute.
CAN network 2IP address: the communication address of the CAN network 2.
CAN network 1IP address: the communication address of the CAN network 1.
Data type: and classifying the unit state information data for refining the unit data.
The number of data is as follows: the number of valid data to be transmitted is selected.
And (3) data segment: the unit actually needs to send effective data.
For the shown control or status frame (control/status frame) format shown in table 2:
when the group data is control state data, the function code needs to select the control/state code.
Different networks and corresponding IP addresses are selected according to the network units and addresses of the control/status objects.
And subdividing the data according to the unit control/state information so as to select different data categories.
And selecting the data transmission number according to the control/state information quantity to be transmitted by the unit.
The valid control/status data is stuffed into different data segments.
The air conditioning system of the present invention is further exemplified below.
The air conditioning system provided by the embodiment of the invention can be a multi-connected air conditioning system, and the multi-connected air conditioning system comprises first control equipment and second control equipment, wherein the first control equipment is connected with a plurality of node equipment. The multi-connected air conditioning system performs data communication based on a Controller Area Network (CAN) communication protocol.
Fig. 3 is a schematic diagram of a multi-connected air conditioning system according to an embodiment of the present invention.
As shown in fig. 3, the air conditioning system includes a two-layer CAN network: a first CAN network and a second CAN network, the first CAN network may be one or more, for example, including a first CAN network. A first CAN network, also shown as CAN network 11, and a second CAN network, also shown as CAN network 2, in particular the air conditioning system comprises: a first control apparatus, that is, the control apparatus 1; the second control device, i.e. the control device 2. The first CAN network includes a control device 1 and node devices connected to the control device 1, and the control device 1 CAN be connected to at least one node device, for example, the illustrated node devices 11 to 1 n. The second CAN network includes a control device 1 and a control device 2, and other devices may be connected to the second CAN network, for example, the control device 1 or the control device 2 may be a centralized control device, and the operation of the other devices in the second CAN network is controlled through the second CAN network, or a single centralized control device may be provided in the second CAN network, and the control device 1 and the control device 2 are controlled through the centralized control device. The devices in the second CAN network may perform communication through the second CAN network, and the devices in the first CAN network may perform communication through the first CAN network, for example, the control device 1 is connected to the node devices in the first CAN network. Specifically, the first control device and the second control device communicate through the second CAN network, for example, the first control device communicates with the second control device through the second CAN network, or both the first control device and the second control device communicate with other devices in the second CAN network through the second CAN network. This embodiment employs a dual-layer CAN communication network: a first CAN network, i.e., CAN network 11; a second CAN network, namely CAN network 2. The CAN network is composed of a control device 1 and a node device connected with the control device 1, the CAN network 2 is composed of a control device, a centralized control device, a gateway device and the like of the CAN11 network, and the CAN network 11 and the CAN network 2 are mutually independent communication networks; the control device node of the CAN network 11 is responsible for uploading data of other device nodes in the network to the CAN network 2 and downloading data of device nodes such as centralized control and gateways of the CAN network 2 to the device nodes in the CAN1 network. In this embodiment, the control device 1 is located in a CAN network 11, and the CAN network 11 further includes a device 11, a device 12 to a device 1n connected to the control device 1.
The multi-connected air conditioning system includes two layers of CAN networks, i.e., a first CAN network and a second CAN network. The first control equipment and the plurality of node equipment connected with the first control equipment are located in a first CAN network and communicate through the first CAN network, and the first control equipment is also located in a second CAN network and communicates with other equipment in the second CAN network through the second CAN network.
The first control device is also located in the second CAN network. It should be noted that the multi-connected air conditioning system may also include more than two layers of CAN networks.
The multi-connected air conditioning system communication network has the characteristics of extremely large number of units, long installation distance and the like. Fig. 4 is a schematic view of an alternative multi-connected air conditioning system according to an embodiment of the present invention. As shown in fig. 4, the embodiment of the present invention employs a dual-layer CAN communication network: a first CAN network and a second CAN network. The first CAN network may include at least one CAN network, including, for example, the illustrated: a first CAN network, i.e., CAN network 11; the second CAN network, i.e., CAN network 12 to CAN network 1 n. For example, the CAN11 network is composed of a control device 1 and a node device connected to the control device 1, the CAN network 2 is composed of the control device 1, a centralized control device, a gateway device, and the like of the CAN1 network, and the CAN network 11 and the CAN network 2 are independent communication networks; the control device 1 node of the CAN network 11 is responsible for uploading data of other device nodes in the network to the CAN network 2 and downloading data of device nodes such as centralized control and gateways of the CAN network 2 to the device nodes in the CAN1 network. In this embodiment, the control device 1 is located in a CAN network 11, and the CAN network 11 further includes a device 11, a device 12 to a device 1n connected to the control device 1. The control device 2 is located in a CAN network 12, which CAN network 12 further comprises a device 21, a device 22 to a device 2n connected to the control device 2. The control device 1 and the control device 2 are further provided in a CAN network 2, and n control devices may be provided in the CAN network 2, where the control device n is located in a CAN network 1n, and the CAN network 1n further includes a device n1, a device n2 through a device nn, which are connected to the control device n. A centralized control device and a gateway device may also be provided in the CAN network 2. In addition, the CAN network 11, the CAN network 12, and the CAN network 1n in this embodiment may be collectively referred to as the CAN network 1. The CAN network 1 and the CAN network 2 are independent communication networks.
It should be noted that, in this embodiment, the control device of the control device 1 to the control device n may also implement the function of the centralized controller, at this time, the centralized controller shown in the figure need not be separately provided, and if the control device of the control device 1 to the control device n is also configured to implement the function of the gateway device, the shown separate gateway device may also not be provided in the embodiment of the present invention.
In order to further improve the communication efficiency, the first CAN network carries out CAN network communication through a preset first CAN network equipment address, and the second CAN network carries out communication through a preset second CAN network equipment address. The second CAN network CAN carry out CAN network communication through the preset address of the first CAN network device and the address of the second CAN network device.
Optionally, the communication frame of the first CAN network includes a first extended frame, and an arbitration segment of the first extended frame is preset with a first CAN network device address. The communication frame of the second CAN network comprises a second extended frame, and the arbitration section of the second extended frame is preset with a second CAN network equipment address.
Optionally, when the data is transmitted in the first CAN network, the first CAN network device address is used as a source address or a destination address of the data. When data is transmitted in the second CAN network, the combination of the first CAN network device address and the second CAN network device address is used as a source address or a destination address of the data.
Optionally, the first control device comprises: a first outdoor unit. The second control apparatus includes: and a second outdoor unit. The first group of node devices includes: a first group of indoor units.
Optionally, the second CAN network is further provided with a centralized control device, and the first control device is configured to send data of the centralized control device to the devices in the first CAN network, and upload data of the devices in the first CAN network to the centralized control device.
Optionally, the multi-connected air conditioning system further includes: and the gateway equipment is communicated with the centralized control equipment, the first control equipment and the second control equipment.
Optionally, the multi-connected air conditioning system further includes: and the second group of node equipment, wherein the second control equipment and the second group of node equipment are communicated through the first two CAN network.
Optionally, the multi-connected air conditioning system further includes: the second group of node devices includes: and a second group of indoor units.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An air conditioner control method is characterized in that an air conditioner is controlled in a CAN communication mode, and the method comprises the following steps:
detecting whether new data is added in the CAN bus;
if the CAN bus is detected to have new data increase, classifying the new data according to a preset data classification rule; and
performing air conditioning control based on the categorized data;
detecting whether there is a new data increase in the CAN bus comprises:
detecting whether a new device is added to the CAN bus,
when detecting that new equipment is added to the CAN bus, determining that new data is added to the CAN bus;
the data classification of the new data according to the preset data classification rule comprises the following steps:
classifying the new equipment according to a preset data classification rule; and
classifying the relevant data of the new device based on the classified device.
2. The air conditioning control method according to claim 1, wherein the data classifying the new data according to a preset data classification rule includes:
performing data classification on the attribute of the new data; and/or the presence of a gas in the gas,
and classifying the priority of the new data.
3. The air conditioning control method according to claim 2, wherein the data classifying the attribute of the new data includes:
the new data is divided into control data or status data.
4. The air conditioning control method according to claim 1, wherein the data classifying the new data according to a preset data classification rule includes:
classifying the new data according to a preset CAN communication protocol frame format,
the CAN communication protocol frame format comprises a function code, a data type, a CAN network address and a data segment;
the CAN communication protocol frame format further includes:
the number of the data is,
wherein the CAN network address comprises: a first CAN network address and a second CAN network address.
5. An air conditioner control device characterized in that an air conditioner is controlled by a CAN communication method, the air conditioner control device comprising:
the detection unit is used for detecting whether new data are added in the CAN bus;
the classification unit is used for classifying the new data according to a preset data classification rule when the new data is detected to be added in the CAN bus; and
a control unit for performing air conditioning control based on the categorized data;
the detection unit is used for detecting whether new equipment is added in the CAN bus, wherein when the new equipment is added in the CAN bus, the new data addition in the CAN bus is determined.
6. The air conditioning control device according to claim 5, wherein the classifying unit is configured to classify the air conditioning according to the following method:
classifying the new equipment according to a preset data classification rule; and
classifying the relevant data of the new device based on the classified device.
7. An air conditioning system characterized by comprising the air conditioning control device according to any one of claims 5 or 6.
8. The air conditioning system is characterized by comprising a main control device and a node device, wherein the main control device and the node device are in data communication in a CAN communication mode, and the main control device is used for controlling in the following mode:
detecting whether new data is added in the CAN bus;
if the CAN bus is detected to have new data increase, classifying the new data according to a preset data classification rule; and
air conditioning control is performed based on the categorized data.
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| CN102052739B (en) * | 2010-12-27 | 2012-10-17 | 重庆大学 | Central air conditioner intelligent control system based on wireless sensor network and method |
| JP5669902B1 (en) * | 2013-08-30 | 2015-02-18 | 三菱電機株式会社 | Air conditioner control system, sensor device control method and program |
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