CN109373524B - Protocol conversion method and system for air conditioner to access cloud and air conditioning system - Google Patents
Protocol conversion method and system for air conditioner to access cloud and air conditioning system Download PDFInfo
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Abstract
The invention provides a protocol conversion method and system for accessing an air conditioner to a cloud end and an air conditioner system, wherein the protocol conversion method comprises the following steps: the cloud server acquires a data frame of the air conditioning system, and packages the data frame once according to the air conditioning subsystem, wherein the data frame packaged once comprises a private attribute of the air conditioning system and a public method for calling the private attribute; and calling primary packaging data to obtain the private attribute of the air conditioner. The protocol conversion system includes a data receiving unit: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring data frames uploaded by an air conditioning system; primary data encapsulation unit: the system comprises a cloud server, a data processing module and a data transmission module, wherein the cloud server is used for uploading air conditioner data frames to the cloud server; a data calling unit: the data encapsulation unit is used for calling the data encapsulated by the primary data encapsulation unit for one time. The air conditioning system may employ the protocol conversion system described above. The invention can convert the complex air-conditioning information uploaded by the lower computer into the universal attribute and method, so as to facilitate the analysis of the cloud server, and greatly improve the communication efficiency and the later maintenance and upgrading cost.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a protocol conversion method and system for an air conditioner to be connected into a cloud and an air conditioning system.
Background
Along with the prevalence of networks and big data, the intellectualization of the air conditioning industry is gradually developing. The intellectualization of the air conditioner cannot be separated from the interaction with the cloud. A central air-conditioning system usually includes a plurality of subsystems, each subsystem includes a plurality of outdoor units and a plurality of indoor units, and the cloud processor can perform centralized control and management on the whole central air-conditioning system, which is equivalent to an upper computer of an intelligent air-conditioning system.
The air conditioner data of the central air conditioning system cannot be directly utilized by the cloud server (webserver), so that the protocol of the air conditioner needs to be converted into a network protocol by a relevant protocol converter (lower computer), and the cloud server (webserver) analyzes the network protocol to finally acquire relevant information of the air conditioner. The formulation, conversion and coupling degree of the protocol relate to the transmission efficiency and the convenience degree of later maintenance and upgrading, and provide high requirements for software development.
In the prior art, the cloud server processes the air-conditioning protocol data in the following manner. The air conditioner can not be directly connected to the cloud, and a protocol converter (a lower computer) is needed to convert an air conditioner private protocol into a TCP/IP private protocol or a standard Modbus TCP and the like to be connected to the cloud. Considering that the air conditioner has a large data volume, in order to improve the transmission rate and save the memory space of the MCU, the protocol of the lower computer accessing the cloud is 8 bits of data of one byte, and each bit represents different content and relates to in-place operation. The cloud service program (upper computer) is generally a webserver, and the upper computer needs to analyze each bit of each byte and perform bit operation at the same time to acquire related information of the air conditioner. In the prior art, about 80% of cloud servers are developed and designed by mainstream java language.
The analysis method of the air conditioner protocol in the prior art has the problems of low communication efficiency and low data analysis efficiency. In order to improve the processing efficiency of cloud data, a conversion method of an air conditioning protocol is disclosed in the prior art. For example, patent application No. 201710103549.7 discloses a protocol conversion method, apparatus and air conditioning system. By adopting the protocol conversion method similar to that disclosed in the above patent, the information of the air conditioning system can be converted into network protocol data and transmitted to the internet, but the problem of low cloud data analysis efficiency is not solved substantially.
Disclosure of Invention
In order to solve the technical problems, the invention provides a protocol conversion method, a protocol conversion system and an air conditioning system for accessing an air conditioner to a cloud end, wherein the protocol conversion method, the protocol conversion system and the air conditioning system are high in data access efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
the protocol conversion method for the air conditioner to access the cloud comprises the following steps:
primary data encapsulation: the cloud server acquires a data frame of the air conditioning system, and packages the data frame once according to the air conditioning subsystem, wherein the data frame packaged once comprises the private attribute of the air conditioning system and a public method for calling the private attribute;
and calling primary packaging data to obtain the private attribute of the air conditioner.
Preferably, the method comprises the following steps: the private attributes comprise outdoor unit parameters and/or indoor unit parameters, and the method further comprises the following steps:
performing secondary encapsulation on private attribute data of outdoor unit parameters and/or indoor unit parameters in the primarily encapsulated data frame, wherein the secondarily encapsulated data frame comprises outdoor unit parameter attributes and/or indoor unit parameter attributes and a method for calling the attributes;
calling the secondary packaging data to obtain the outdoor machine parameters and/or the indoor machine parameters of the air conditioner
Preferably, the method comprises the following steps: and the data frame of the air conditioning system is uploaded to a cloud server after being subjected to protocol conversion.
Preferably, the method comprises the following steps: the air conditioning system comprises a plurality of air conditioning subsystems, each air conditioning subsystem comprises at least one outdoor unit and at least one indoor unit, and the method further comprises the following steps:
calling primary packaging data according to the round patrol of the air-conditioning subsystem, and calling secondary packaging data of the air-conditioning subsystem according to the round patrol;
and when the data calling of one air-conditioning subsystem is finished, calling the primary packaged data and the secondary packaged data of the next air-conditioning subsystem.
Preferably, the method comprises the following steps: and data packaging is carried out by adopting a JNI protocol, and primary packaging data and secondary packaging data are called through a JNI interface by a JNI public method.
Cloud protocol conversion system includes:
a data receiving unit: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring data frames uploaded by an air conditioning system;
primary data encapsulation unit: the system comprises a cloud server, a data processing module and a data transmission module, wherein the cloud server is used for uploading air conditioner data frames to the cloud server;
a data calling unit: the data encapsulation unit is used for calling the data encapsulated by the primary data encapsulation unit for one time.
Preferably, the method comprises the following steps: the system further comprises:
a secondary data encapsulation unit: the data calling unit is used for carrying out secondary packaging on the air conditioner outdoor unit parameters and/or the indoor unit parameters in the air conditioner system data frames, and further calling the data subjected to secondary packaging by the secondary data packaging unit.
Preferably, the method comprises the following steps: the primary data packaging unit adopts JNI technology to package data, and the data calling unit is configured to call primary packaged data through a JNI interface.
Preferably, the method comprises the following steps: after the secondary data encapsulation unit encapsulates data by adopting a JNI technology, the data calling unit is configured to call secondary encapsulated data through a JNI interface.
An air conditioning system comprises the cloud protocol conversion system.
Preferably, the method comprises the following steps: the air conditioning system further comprises a protocol converter, the data of the air conditioning system are uploaded to the protocol converter, and the data after protocol conversion are further uploaded to the cloud server. The protocol conversion system is configured on the cloud server.
Compared with the prior art, the invention has the advantages and positive effects that:
the protocol conversion mode provided by the invention can provide the data communication efficiency of the cloud air conditioner intelligent control system. By taking a Java-based cloud server configuration as an example, a layer (middle layer) is added between a protocol converter (lower computer) and a cloud service webserver (upper computer), and complex air conditioner information uploaded by the lower computer is converted into Java language universal attributes and methods by using a JNI (Java Native Interface) technology, so that the webserver can conveniently analyze the complex air conditioner information, later maintenance and upgrading can be performed only by operating the middle layer protocol, and the communication efficiency and later maintenance and upgrading cost are greatly improved.
Drawings
FIG. 1 is a schematic diagram of an air conditioning protocol parameter encapsulation structure;
FIG. 2a is a schematic diagram of an outdoor unit parameter protocol package;
FIG. 2b is a schematic diagram of the parameter protocol encapsulation of the indoor unit;
FIG. 3 is a flow chart of a method for invoking encapsulated data by a cloud server;
fig. 4 is a schematic diagram of a topology structure of an air conditioner access cloud network.
The system comprises a cloud server 1, a protocol converter 2, an air conditioning system 3-0, an air conditioning system 4-n, an outdoor unit 5 and an indoor unit 6.
Detailed Description
Hereinafter, embodiments of the present invention will be further described with reference to the accompanying drawings.
The invention provides a protocol conversion method for accessing an air conditioner to a cloud, which is suitable for controlling an air conditioning system, in particular a central air conditioning system, by a cloud server.
Firstly, the composition and data attribute of the air conditioning system accessed to the cloud system are introduced. Fig. 4 shows an air conditioner access cloud network topology, which includes an air conditioner subsystem and a cloud server 1, and may further include a protocol converter 2. The central air conditioning system generally comprises a plurality of subsystems, and the number of the subsystems depends on the specific application scene of the central air conditioning system, and can be configured into 64 subsystems at most. Each central air-conditioning subsystem is configured with a unique system number, for example, air-conditioning system No. 0, air-conditioning system No. 1, air-conditioning system No. … … n, air-conditioning system No. 4, each air-conditioning subsystem includes an outdoor unit 5 and indoor units 6, the outdoor units include at least one outdoor unit, the indoor units include at least one indoor unit, and the number of indoor units is at most 64 indoor units.
The configuration information of the central air conditioning system can be represented by data uploaded by the air conditioning system. The whole frame of data uploaded by the central air-conditioning system is multi-byte data, each byte is multi-bit data, and the data includes but is not limited to the system number (corresponding to the air-conditioning subsystem) of the air conditioner, the number of outdoor units corresponding to the subsystem, the number of indoor units corresponding to the subsystem, outdoor unit parameters and indoor unit parameters. The parameters of the air conditioner outdoor unit further comprise attribute parameters such as an outdoor unit address, an operation mode of the air conditioner, exhaust pressure, exhaust temperature and the like; the parameters of the indoor unit further comprise the attribute parameters of the address of the indoor unit, the opening degree of an expansion valve, the return air temperature, the liquid pipe temperature and the like. Taking the data of one byte in the air conditioner protocol data frame as an example, see table 1 below.
Table 1: air conditioner protocol format
Table 1 illustrates a data format uploaded by an air conditioning system by taking parameter data of an air conditioning indoor unit as an example. The parameter data of the air conditioner indoor unit is 8-bit data, and each bit represents different information. For example: bit0 represents the operating state of the indoor unit, and Bit2-Bit6 represents the operating mode of the indoor unit. The protocol data frame of an air-conditioning subsystem comprises parameter data of n air-conditioning indoor units and parameter data of an outdoor unit, and also comprises configuration data of the air-conditioning subsystem, wherein all the data are represented by a data format similar to that in the table 1, and only the meaning of the data represented by each bit is different.
And the cloud server 1 of the cloud air conditioning system is used for controlling the whole air conditioning system. The cloud server 1 acquires data of the air conditioning system, which is equivalent to an upper computer of an intelligent system. Data transmission is carried out between the air conditioning system and the cloud server 1 through a network bus, and data identification can be completed only by carrying out data protocol conversion between the air conditioning private protocol and the cloud server 1. When the conventional cloud server 1 performs protocol analysis, each Bit of the nth byte needs to be identified, taking the data in table 1 as an example, Bit0 is in an operating state, Bit2-Bit6 is in an operating mode, and all information of the air conditioner is transmitted in this format.
The protocol conversion method for the air conditioner to be connected into the cloud is configured at the cloud server end 1, and the cloud server 1 is configured with the intermediate protocol conversion layer and used for processing the air conditioner protocol data to convert the data into data which can be identified and processed by the cloud server 1.
The protocol conversion method for the air conditioner to be connected to the cloud specifically comprises the following steps:
primary data encapsulation: the cloud server acquires a data frame of the air conditioning system, and packages the data frame once according to the air conditioning subsystem, wherein the data frame packaged once comprises the private attribute of the air conditioning system and a public method for calling the private attribute;
and calling primary packaging data to obtain the private attribute of the air conditioner.
The data frame of the air conditioning system is firstly uploaded to the protocol converter, and then uploaded to the cloud server after protocol conversion. Referring to fig. 1, a diagram of a primary data packaging structure is shown. And after the cloud server acquires the whole frame of data uploaded by the air conditioning system, performing primary data encapsulation on the data according to the air conditioning subsystem. For example, if four air conditioning subsystems are included, the data for each air conditioning subsystem is packaged once. The primary packaged data frame comprises a private attribute of the air conditioning system and a public method for calling the private attribute, wherein the private attribute comprises an attribute of a subsystem, and the method specifically comprises the following steps: the system number, the number of outdoor units, the number of indoor units, outdoor unit parameters and indoor unit parameters. For a certain air conditioner access cloud system, the system number is set, for example, four air conditioner subsystems are provided, and the system number can be respectively set as 0-3 air conditioner subsystems; once the configuration of the air conditioning subsystem is set, the number of the outdoor units and the number of the indoor units are also set, specifically, the difference is the parameter of each outdoor unit and the parameter of each indoor unit. The public method is a calling method for packaging data and is related to language configuration of the cloud server. For example, in this embodiment, the cloud server is Java-based, and in a data encapsulation process, data is converted into Java attributes and methods through data bit operations.
Because the number of the outdoor units and the number of the indoor units of the air-conditioning subsystem are large, after primary data encapsulation, secondary encapsulation is further performed on the private attribute data of the outdoor unit parameters and/or the indoor unit parameters in the data frames after primary encapsulation, and the secondary encapsulation data frames comprise the outdoor unit parameter attributes and/or the indoor unit parameter attributes and the method for calling the attributes. In this embodiment, both the outdoor unit parameters and the indoor unit parameters are packaged for the second time. And then, the cloud server can further call the secondary packaging data to acquire the outdoor unit parameters and the indoor unit parameters of the air conditioner.
Schematic diagram of secondary data protocol encapsulation refers to fig. 2. The private attributes of the outdoor unit parameters may include an outdoor unit address, an operation mode, and the like, and the private attributes of the indoor unit parameters may include an indoor unit address, a return air temperature, and the like.
And the data encapsulation is completed by adopting a polling mode. Calling primary packaging data according to the round patrol of the air-conditioning subsystem, and calling secondary packaging data of the air-conditioning subsystem according to the round patrol; and when the data calling of one air-conditioning subsystem is finished, calling the primary packaged data and the secondary packaged data of the next air-conditioning subsystem. That is, first, the first data encapsulation of the 0 th air-conditioning subsystem is performed, in this process, the private attribute data of the outdoor unit of the 0 th air-conditioning subsystem is encapsulated in a round trip manner, and the private attribute data of the indoor unit of the 0 th air-conditioning subsystem is encapsulated in a round trip manner. And after the data encapsulation of the 0 th air-conditioning subsystem is finished, processing the air-conditioning protocol data of the 1 st air-conditioning subsystem.
In this embodiment, the cloud server is a Java-based cloud server, and therefore, the primary data encapsulation and the secondary data encapsulation both use a JNI protocol for data encapsulation, and the primary encapsulation data and the secondary encapsulation data are called through a JNI interface by a JNI disclosure method.
The specific flow refers to fig. 3. When calling primary packaged data or secondary packaged data, the cloud server firstly calls a JNI interface, and acquires interface data based on a public packaged data calling method. The cloud server calls the data of the air conditioning system one by one and caches the data in the server system.
The present invention further provides a cloud protocol conversion system, configured at a cloud server, including:
a data receiving unit: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring data frames uploaded by an air conditioning system;
primary data encapsulation unit: the system comprises a cloud server, a data processing module and a data transmission module, wherein the cloud server is used for uploading air conditioner data frames to the cloud server; specifically, primary data encapsulation is carried out according to an air conditioner subsystem;
a secondary data encapsulation unit: the system comprises a data frame, a data frame and a data frame encapsulation module, wherein the data frame is used for carrying out secondary encapsulation on air conditioner outdoor machine parameters and/or indoor machine parameters in the data frame of the air conditioner system;
a data calling unit: the data encapsulation unit is used for calling the data encapsulated by the primary data encapsulation unit for one time. The data calling unit further calls the data subjected to secondary packaging by the secondary data packaging unit.
The primary data package and the secondary data package pack and package air conditioner data frames transmitted by a wide area network according to a data format acceptable by the redefined cloud server, the data are stored according to the air conditioner subsystem, and the cloud server can directly call the packed and packaged data.
The cloud server is a Java-based server, the primary data packaging unit adopts a JNI technology to package data, and the data calling unit is configured to call primary packaged data through a JNI interface. Meanwhile, after the secondary data encapsulation unit encapsulates data by adopting a JNI technology, the data calling unit is configured to call the secondary encapsulated data through a JNI interface. The invention further provides an air conditioning system which comprises the cloud protocol conversion system. The structure of the air conditioning system refers to fig. 4.
The air conditioning system comprises an air conditioning unit, a protocol converter and a cloud server, wherein the air conditioning unit comprises a plurality of air conditioning subsystems, and each air conditioning subsystem comprises an outdoor unit and a plurality of indoor units. The air conditioning unit protocol is a private protocol based on HBS, each air conditioning subsystem data is uploaded to the protocol converter, the protocol converter converts the air conditioning protocol data into a network protocol to be transmitted on the network, the cloud server is communicated with the protocol converter, and finally the converted protocol is transmitted to the cloud server through the wide area network.
The protocol conversion system is configured on the cloud server, after the cloud server obtains the data packet, the interface provided by the JNI is called, the data packet is transferred to the middle layer to be subjected to protocol secondary conversion, the middle layer is analyzed according to the network protocol, primary packaging and secondary packaging of the data are completed, and the data structure is redefined to be packaged. And the cloud server acquires the information of the air conditioner according to the redefined attribute and method. The cloud server can store and check the air conditioning protocol data and issue a control instruction to the air conditioning system based on the data.
By adopting the protocol conversion method and the protocol conversion system for the air conditioner to be accessed into the cloud, the efficiency of the cloud server for acquiring air conditioner data can be improved, and the intelligent management of the cloud to the air conditioner system can be improved.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (10)
1. The protocol conversion method for the air conditioning system to access the cloud is characterized by comprising the following steps:
primary data encapsulation: the method comprises the steps that a cloud server obtains a data frame of the air conditioning system, the cloud server is provided with an intermediate protocol conversion layer, the intermediate protocol conversion layer carries out data processing on the data frame of the air conditioning system obtained by the cloud server and converts the data frame into data which can be identified and processed by the cloud server, the cloud server carries out primary packaging on the data frame converted by the intermediate protocol conversion layer according to an air conditioning subsystem, and the primary packaged data frame comprises a private attribute of the air conditioning system and a public method for calling the private attribute;
and calling primary packaging data to obtain the private attribute of the air conditioner.
2. The method of claim 1, wherein the private attributes comprise outdoor unit parameters and/or indoor unit parameters, the method further comprising:
performing secondary encapsulation on private attribute data of outdoor unit parameters and/or indoor unit parameters in the primarily encapsulated data frame, wherein the secondarily encapsulated data frame comprises outdoor unit parameter attributes and/or indoor unit parameter attributes and a method for calling the attributes;
and calling the secondary packaging data to obtain the outdoor machine parameters and/or the indoor machine parameters of the air conditioner.
3. The method of claim 2, further comprising: the air conditioning system comprises a plurality of air conditioning subsystems, each air conditioning subsystem comprises at least one outdoor unit and at least one indoor unit, and the method further comprises the following steps:
calling primary packaging data according to the round patrol of the air-conditioning subsystem, and calling secondary packaging data of the air-conditioning subsystem according to the round patrol;
and when the data calling of one air-conditioning subsystem is finished, calling the primary packaged data and the secondary packaged data of the next air-conditioning subsystem.
4. A method according to claim 1 or 2 or 3, characterized in that: and adopting a JNI technology to carry out data encapsulation, and calling primary encapsulation data and secondary encapsulation data through a JNI interface by using a JNI public method.
5. The cloud protocol conversion system is configured at a cloud server, and is characterized by comprising:
a data receiving unit: the system comprises a data acquisition module, a data processing module and a data processing module, wherein the data acquisition module is used for acquiring data frames uploaded by an air conditioning system;
intermediate protocol conversion layer: the data frame processing unit is used for processing the data frame acquired by the data receiving unit so as to convert the data frame into a data format acceptable by the cloud server;
primary data encapsulation unit: the system comprises a cloud server, a data processing module and a data transmission module, wherein the cloud server is used for uploading an air conditioner data frame after protocol conversion to the cloud server;
a data calling unit: the data encapsulation unit is used for calling the data encapsulated by the primary data encapsulation unit for one time.
6. The cloud protocol conversion system of claim 5, wherein said system further comprises:
a secondary data encapsulation unit: the data calling unit is used for carrying out secondary packaging on the air conditioner outdoor unit parameters and/or the indoor unit parameters in the air conditioner system data frames, and further calling the data subjected to secondary packaging by the secondary data packaging unit.
7. The cloud protocol conversion system of claim 5, wherein said primary data encapsulation unit encapsulates data using JNI, and said data call unit is configured to call primary encapsulated data via a JNI interface.
8. The cloud protocol conversion system of claim 6, wherein after the secondary data encapsulation unit encapsulates data using JNI technology, the data call unit is configured to call the secondary encapsulated data through a JNI interface.
9. An air conditioning system, characterized by comprising the cloud protocol conversion system of claims 5-8.
10. The air conditioning system of claim 9, wherein the protocol conversion system is configured at a cloud server.
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| JP4367083B2 (en) * | 2003-10-21 | 2009-11-18 | ダイキン工業株式会社 | Protocol converter, protocol conversion system, equipment management method and management program |
| KR100613508B1 (en) * | 2004-03-22 | 2006-08-17 | 엘지전자 주식회사 | Central controlling system of Air conditioners and its operating method |
| CN102215257A (en) * | 2011-05-31 | 2011-10-12 | 佘培嘉 | Intelligent network central air conditioning system |
| CN103472779B (en) * | 2013-08-30 | 2016-02-10 | 青岛海信日立空调系统有限公司 | The method of Smart Home building control system and access air-conditioning system thereof |
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| CN104407864B (en) * | 2014-11-25 | 2018-02-02 | 广东欧珀移动通信有限公司 | A kind of algorithm of JNI layers carries out the method for packing and system of more example calling |
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