CN114785828A

CN114785828A - Data communication method, special equipment, electric appliance device and storage medium

Info

Publication number: CN114785828A
Application number: CN202210427198.6A
Authority: CN
Inventors: 马翠明; 金国华; 王文灿
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-07-22
Anticipated expiration: 2042-04-22
Also published as: CN114785828B

Abstract

The present disclosure relates to a data communication method, a dedicated device, an electric apparatus, and a storage medium. The data communication method comprises the following steps: and under the condition that the special equipment of the electrical appliance is in a first network, the special equipment adopts the same address as the main control equipment to carry out communication in the first network, wherein the first network is the network where the main control equipment and the slave equipment of the electrical appliance are positioned. The special equipment and the main control equipment are in the same communication network, so that data forwarding is avoided, and function expansion is facilitated. The special equipment and the main control equipment adopt the same address without allocating a new address field.

Description

Data communication method, special equipment, electric appliance device and storage medium

Technical Field

The present disclosure relates to the field of communications, and in particular, to a data communication method, a dedicated device, an electrical apparatus, and a storage medium.

Background

With the advent of big data and intelligent control times, electrical devices such as air conditioners and the like have higher and higher intellectualization and richer functions, and are not limited to traditional refrigeration and heating control; meanwhile, a more powerful intelligent control chip is also developed, and in order to meet multi-scene applications such as fault detection, image processing, voice, energy saving and the like, the chip generally has a larger storage unit and a higher operation speed, integrates various algorithms, and mostly has a dual-processor or multi-processing heterogeneous architecture. Such chips are generally expensive and difficult to popularize and apply in conventional air conditioners.

On the other hand, in consideration of the basic functions and network architecture of electrical devices such as a conventional air conditioner in the related art, certain requirements are imposed on the number of chips such as CAN communication, UART communication, SPI communication, AD sampling, PWM function, and general IO ports, and although many chips have relatively strong calculation and storage capacities, the above requirements of the conventional air conditioner cannot be met, or CAN be met only by externally extending circuits with corresponding functions.

Disclosure of Invention

The inventor discovers through research that: in view of at least one of the above technical problems, the method of using the conventional controller + extending the dedicated function chip is a good choice. The main chip of the air conditioner controller is responsible for the traditional air conditioner control logic, and the special function chip is selected according to the functions which need to be realized by the external special function chip, so that the requirement on the variety of the external equipment is not too much. Based on the scheme, the communication mode between the external expansion chip and the main chip is a problem to be considered.

In one technical scheme of the related art, a special communication network 2 of a special chip and a main chip is established, and an original communication network 1 is kept between the main chip and other air conditioner controllers. In the method, the data required by the special chip are all from the main control chip, and if the data of other controllers are required, the data must be forwarded by the main control chip; if the data of the special chip needs to be analyzed by other equipment, the data also needs to be forwarded by the main control chip. The technical scheme has poor expandability and is not beneficial to subsequent function upgrading. The technical scheme is particularly not suitable for the occasion of multi-node communication.

In view of at least one of the above technical problems, the present disclosure provides a data communication method, a dedicated device, an electrical apparatus, and a storage medium, where the dedicated device and a main control device are in the same communication network, so as to avoid data forwarding and facilitate function expansion.

According to an aspect of the present disclosure, there is provided a data communication method including:

under the condition that the special equipment of the electric appliance device is in a first network, the special equipment adopts the same address as the main control equipment to carry out communication in the first network, wherein the first network is the network where the main control equipment and the slave equipment of the electric appliance device are positioned.

In some embodiments of the present disclosure, in the case that the dedicated device of the appliance apparatus is in the first network, the communicating, by the dedicated device, in the first network using the same address as the master device includes:

under the condition that the special equipment is in the first network, after the special equipment receives the data of the main control equipment, defining the self address as the address of the main control equipment;

the private device sends private device data in the manner of the master device address.

In some embodiments of the present disclosure, the sending the private device data by the master device address includes:

the special device data is identified by adopting a main control device address and a specific data category mode;

and sending the special device data by adopting a main control device address, a special data category and special device effective data, wherein the special data category is a special function data category.

In some embodiments of the present disclosure, said sending the dedicated device data by using the address of the master device, the specific data class, and the valid data of the dedicated device includes:

and sending the special equipment data to the master control equipment and the slave equipment by adopting a specific function code, a master control equipment address, a specific data category and special equipment effective data, wherein the specific function code is different from the first function code, and the master control equipment adopts the first function code to identify the sent control data.

In some embodiments of the present disclosure, the specific function code is a second function code, wherein the second function code is adopted by the master control device to identify the sent status data.

In some embodiments of the present disclosure, the data communication method further comprises:

and under the condition that the special equipment is not in the first network, the special equipment transmits the special equipment data to the main control equipment through the second network, so that the main control equipment transmits the special equipment data in the first network in a mode of adopting a specific function code, a main control equipment address, a specific data category and special equipment valid data, wherein the second network is different from the first network.

According to another aspect of the present disclosure, there is provided a dedicated apparatus, wherein,

the special equipment is special equipment for an electrical device;

and the special device is used for communicating in the first network by adopting the same address as the main control device under the condition that the special device is in the first network, wherein the first network is a network where the main control device and the slave device of the electrical equipment are positioned.

In some embodiments of the disclosure, the dedicated device comprises:

the address definition module is used for defining the address of the special device as the address of the main control device after the special device receives the data of the main control device under the condition that the special device is in the first network;

and the first data sending module is used for sending the special equipment data in a mode of the main control equipment address.

In some embodiments of the present disclosure, the first data sending module is configured to identify the dedicated device data by using a master device address and a specific data category; and sending the special device data by adopting a main control device address, a special data category and special device effective data, wherein the special data category is a special function data category.

In some embodiments of the present disclosure, the first data sending module is configured to send the dedicated device data to the master device and the slave device by using a specific function code, a master device address, a specific data category, and dedicated device valid data, where the specific function code is different from the first function code, and the master device identifies the sent control data by using the first function code.

In some embodiments of the present disclosure, the specific function code is a second function code, wherein the second function code is adopted by the master control device to identify the transmitted status data.

In some embodiments of the disclosure, the dedicated device further comprises:

and the second data sending module is used for sending the special equipment data to the main control equipment through a second network by the special equipment under the condition that the special equipment is not in the first network, so that the main control equipment sends the special equipment data in the first network by adopting a specific function code, a main control equipment address, a specific data category and special equipment effective data, wherein the second network is different from the first network.

According to another aspect of the present disclosure, there is provided a dedicated apparatus including:

a memory to store instructions;

a processor configured to execute the instructions to cause the special purpose apparatus to perform operations to implement the data communication method according to any of the above embodiments.

According to another aspect of the present disclosure, there is provided an electrical apparatus including a master device, a slave device, and a dedicated device as described in any of the above embodiments.

In some embodiments of the present disclosure, the master device is configured to identify the transmitted control data with a first function code and identify the transmitted status data with a second function code.

In some embodiments of the present disclosure, the master device is configured to determine whether the dedicated device is in a first network in which the master device and the slave device are located; and under the condition that the special equipment is not in the first network, receiving the special equipment data sent by the special equipment, and sending the special equipment data by adopting a specific function code, a main control equipment address, a specific data category and special equipment valid data.

In some embodiments of the disclosure, the master device comprises a data processing unit, wherein:

the master control equipment is used for judging whether the special equipment is in a first network where the master control equipment and the slave equipment are positioned; under the condition that the special equipment is not in the first network, calling a data processing unit to receive the special equipment data sent by the special equipment, and sending the special equipment data by adopting a specific function code, a main control equipment address, a specific data category and a special equipment effective data mode; and under the condition that the special equipment is in the first network, the data processing unit is not called, and the special equipment transmits the special equipment data by adopting a specific function code, a main control equipment address, a specific data category and a special equipment effective data mode.

According to another aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, which when executed by a processor, implement the data communication method according to any one of the above embodiments.

The special equipment and the main control equipment are in the same communication network, so that data forwarding is avoided, and function expansion is facilitated. The special equipment and the main control equipment adopt the same address without allocating a new address field.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic topology diagram of some embodiments of an electrical apparatus of the present disclosure.

Fig. 2 is a schematic topology diagram of other embodiments of an electrical device according to the present disclosure.

Fig. 3 is a schematic topology diagram of other embodiments of an electrical device according to the present disclosure.

Fig. 4 is a schematic topology diagram of still other embodiments of the electrical apparatus of the present disclosure.

FIG. 5 is a schematic diagram of a dial detection circuit according to some embodiments of the present disclosure.

Fig. 6 is a schematic diagram of some embodiments of the disclosed data communication method.

Fig. 7 is a schematic diagram of some embodiments of the dedicated apparatus of the present disclosure.

Fig. 8 is a schematic structural diagram of other embodiments of the special equipment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the scope of protection of the present disclosure.

The relative arrangement of parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The inventor discovers through research that: in another scheme of the related technology, the dedicated chip and the original controller communication network adopt the same communication mode. In this way, because a new device node is introduced into the communication network, an address generally needs to be allocated to the device, and a new address field is occupied; in the aspect of data analysis, due to the new application of the device address, for some general devices (such as debugging devices and monitoring devices) in the network, data information of the newly added devices needs to be analyzed, and also needs to be developed in a matching manner, so that a proprietary communication network 2 of a related-art special chip and a main chip cannot be used, and an analysis scheme of the technical scheme of the original communication network 1 is maintained between the main chip and other air conditioner controllers.

In view of at least one of the above technical problems, the present disclosure provides a data communication method, a dedicated device, an electric apparatus, and a storage medium, and is explained below with specific embodiments.

Fig. 1 is a schematic topology diagram of some embodiments of an electrical apparatus of the present disclosure. As shown in fig. 1, the electric apparatus of the present disclosure may include a master device 11, a slave device 12 and a dedicated device 13,

wherein:

the master device 11, the slave device 12 and the dedicated device 13 are in a first network.

In the case where the dedicated device 13 is in the first network, the dedicated device 13 communicates in the first network using the same address as the master device 11.

In some embodiments of the present disclosure, the electrical appliance may be an air conditioner, a water heater, a refrigerator, or the like.

In some embodiments of the present disclosure, the main control device 11 may be an external unit main controller of an air conditioner.

In other embodiments of the present disclosure, the main control device 11 may be a main outdoor unit of the multi-split air conditioner.

In some embodiments of the present disclosure, the slave device 12 may comprise a general purpose device such as a commissioning device, a monitoring device, and the like.

In some embodiments of the present disclosure, the slave device 12 may also include slave outdoor and indoor units of a multi-split air conditioner.

In some embodiments of the present disclosure, the dedicated device 13, as an additional unit of the external unit main controller, is used for dedicated functions such as storage, calculation, intelligent control, etc., and needs to publish some status data and calculation results of itself, so that an address needs to be allocated to facilitate resolution of other devices.

In some embodiments of the present disclosure, in a communication network, addresses are used to identify different devices within the network, identify data sources and control objects.

In some embodiments of the present disclosure, for a multi-split modular system (having multiple external units and multiple internal units), control of the entire system is generally controlled by a master external unit (master control device 11), and the master control device 11 sends a control command to a slave device 12. The main module external unit address is unique and fixed in the network, so that the dedicated device 13 can publish data using the same address as the main control device 11, and the modular structure is not affected.

In some embodiments of the present disclosure, the dedicated device 13 may be plug and play as an additional function.

In the topology structure of the embodiment in fig. 1, the dedicated device 13 and other device nodes (the master device 11 and the slave device 12) are both in the master communication network (the first network 1), and any device node can receive the data of the dedicated device 13 without data forwarding.

In the solution of the above-described embodiment of the present disclosure, the dedicated device 13 adopts the same virtual address as the master device 11 of the master communication network (first network 1), and does not need to reallocate an address.

The above embodiments of the present disclosure have network advantages: the special device 13 adopts the communication mode of the first network 1, can be directly plugged into a communication interface reserved by the internal and external machine controllers, is in the same communication network with the internal and external machines, can directly acquire data of each node, and is convenient for function expansion and maintenance.

In some embodiments of the present disclosure, the dedicated device 13 may be configured to define its own address as the address of the master device after receiving the data of the master device 11 when the dedicated device 13 is in the first network, and send the dedicated device data in the form of the address of the master device.

In some embodiments of the present disclosure, the dedicated device 13 may be configured to identify the dedicated device data by using the address of the master device and a specific data category and transmit the dedicated device data by using the address of the master device, the specific data category and valid data of the dedicated device when the dedicated device 13 is in the first network, where the specific data category is the dedicated function data category.

In some embodiments of the present disclosure, the master control device 11 is configured to identify the transmitted control data by using a first function code, and identify the transmitted status data by using a second function code.

In some embodiments of the present disclosure, the dedicated device 13 is configured to transmit the dedicated device data to the master device 11 and the slave device 12 by using a specific function code, a master device address, a specific data category and the dedicated device valid data when the dedicated device 13 is in the first network, wherein the specific function code is different from the first function code.

In some embodiments of the present disclosure, the specific function code is a second function code.

In the above embodiments of the present disclosure, the dedicated function data is sent with the specific function code, so as to avoid causing multiple main faults of the system. For a multi-module system, only one main control device can send control data according to dial-up determination so as to control other devices to operate in order, and therefore when the main control device receives specific control data, the main control device considers that a plurality of main control devices exist in a network and reports faults.

In some embodiments of the present disclosure, the dial-up refers to a dial-up switch, and is implemented in hardware, and the specific function code is a function code established in a communication protocol established for transmitting data, and the function or status of identifying such data is implemented in software.

In some embodiments of the present disclosure, there is only one master control device (external master module) in one electrical apparatus system, and the others are all slave devices (external slave modules), the master control device and the slave devices are distinguished by a dial switch ON a hardware circuit, and when a controller chip detects that the dial switch is toggled to an ON terminal, the controller chip considers itself to be the master module, and when detects that the dial switch is toggled to an OFF terminal, the controller chip considers itself to be the slave module.

The master device controls the operation of the whole system, and sends control commands (called control data, sent by using a special function code) to the slave devices, such as controlling the compressor frequency of other slave devices (slave external units).

When the dial switch is not set or the setting is wrong in the system, a plurality of main control devices can be caused to exist in the system, and each main control device can send a control command, so that whether a plurality of main control devices exist in the network or not can be judged by identifying whether control data which can be sent by the main control devices are received or not in communication, and a plurality of main faults can be reported when the main control devices exist.

Since the dedicated device uses the same address as the main control device when it is in the first network 1, it cannot send the function code data (control data, first function code data), and only sends its own status data (other function code identification data, such as second function code data), thereby preventing the master module from mistaking that there are multiple master modules in the network.

Fig. 2 is a schematic topology diagram of other embodiments of an electrical device according to the present disclosure. As shown in fig. 2, the electrical apparatus of the present disclosure may include a master device 11, a slave device 12, and a dedicated device 13, wherein:

the master device 11 and the slave device 12 are in a first network and the master device 11 and the dedicated device 13 are in a second network. The second network and the first network are different communication networks.

The dedicated device 13 and the master control device 11 (e.g., the master module outdoor unit) communicate with each other in a different manner from the master network (first network 1); the other device nodes (e.g. slave devices 12) are facilitated in their resolution by virtue of the master device 11 forwarding the private device data to the first network 1.

In some embodiments of the present disclosure, the address of the dedicated device is not the same as the address of the master device at the second network 2. The first network 1 and the second network 2 are two completely different independent networks, and even if the same device is a master device, the device addresses in the first network 1 and the second network 2 may be different depending on the formulation of communication protocols of different networks (the communication protocols generally specify the addresses of different devices, the transmission modes of data, and the like). Devices of the same network follow the same communication protocol. Since the dedicated device is not in the first network 1, its data can be published by the master device to the first network 1 for resolution by other devices in the first network 1.

The above embodiments of the present disclosure propose to use the topology of the embodiment of fig. 1 while being compatible with the scheme of the embodiment of fig. 2 in data processing, in view of easy expansion of functions.

The above embodiments of the present disclosure provide a data processing method that is compatible with the two topologies shown in fig. 1 and fig. 2, and does not need to add an address field to a dedicated device.

In some embodiments of the present disclosure, the master device 11 in the embodiments of fig. 1 and fig. 2 is configured to determine whether the dedicated device 13 is in a first network where the master device and the slave device are located; in the case where the dedicated device 13 is in the first network (e.g., the case of the embodiment of fig. 1), the dedicated device data transmitted by the dedicated device 13 is received and transmitted in the form of a specific function code, a master device address, a specific data class, and dedicated device valid data.

In some embodiments of the present disclosure, the master device 11 may comprise a data processing unit, wherein:

the master control device 11 is configured to determine whether the dedicated device 13 is in a first network in which the master control device and the slave device are located; in the case that the dedicated device 13 is not in the first network (e.g., in the second network) (e.g., in the case of the embodiment of fig. 2), the call data processing unit receives the dedicated device data sent by the dedicated device 13 and sends the dedicated device data in the form of the specific function code, the master device address, the specific data category, and the dedicated device valid data; in the case of being in the first network (e.g. in the case of the embodiment of fig. 1), the data processing unit is not invoked, and the dedicated device data is transmitted by the dedicated device 13 itself in the form of the specific function code, the master device address, the specific data class and the dedicated device valid data.

In some embodiments of the present disclosure, the data processing unit of the main control device 11 is a functional module dedicated to processing different network data parsing and transmission. The master device 11 performs the following logic processing:

first the need of the master device 11 identifies whether the dedicated device is in the first network 1 or the second network 2.

When the dedicated device 13 is in the second network 2, it may involve data transmission of the first network 1 and the second network 2, and therefore, this data processing unit needs to be invoked to implement the data transmission of the network 1 and the network 2.

When the dedicated device is in the first network 1, because the dedicated device 13 and the other devices are in the same network and can communicate with any device in the first network 1, the dedicated device 13 can send data in the network 1 by itself without the need of forwarding by the main control device, so the main control device 11 does not call the data processing function module.

In summary, the above embodiments of the present disclosure determine whether to invoke the data processing unit by identifying the location of the dedicated device on the network, so as to achieve compatibility of two schemes:

in the first network 1 there is and only one kind of dedicated device data: the scheme of the embodiment of fig. 2 is that the master device generates dedicated device data; the scheme of the embodiment of fig. 1 is data transmitted by the dedicated device itself; the data representation of the two schemes is the same (specific function code + specific address + specific data category + valid data), but the data sender is different.

In some embodiments of the present disclosure, the dedicated device data is sent in topology 1 and topology 2 in the manner that the network 1 adopts the specific function code (e.g., 0xF7) + the master mode block address + the specific data type + the valid data of the dedicated device, so that, for the general devices in the first network 1, such as the debugging device and the monitoring device, data analysis only needs to identify the dedicated device type data of the master mode block address of the external machine, and compatibility between the two schemes is achieved.

Based on the scheme, the communication interfaces of the first network 1 and the second network 2 can be reserved on the external machine main controller at the same time, and the communication interfaces can be freely selected according to the communication mode of the special equipment.

In some embodiments of the present disclosure, in a multi-split system, in the scheme of the embodiment of fig. 2, the dedicated device data is forwarded to the first network 1 by the master device, and thus may be published as master device data; in the embodiment of fig. 1, the dedicated device and the main control device use the same address, and use a specific address (master module address) + a specific data type (dedicated device data) to identify the data of the dedicated device, and abandon the original single address identification method, thereby saving the allocation and use of device addresses.

In some embodiments of the present disclosure, the data category is used to mark whether or not it belongs to application specific device data.

In some embodiments of the present disclosure, the dedicated device may be used for intelligent operations, integrating some artificial intelligence algorithms; the specific device data may be AI (artificial intelligence) specific data.

The following describes the electrical apparatus and the data communication method thereof according to the present disclosure with specific embodiments.

Fig. 3 is a schematic topology diagram of other embodiments of an electrical device according to the present disclosure. Fig. 4 is a schematic topology diagram of still other embodiments of the electrical apparatus of the present disclosure. As shown in fig. 3 and 4, the electrical apparatus of the present disclosure may be a multi-split air conditioner, and the master control device (outdoor unit 1) and the slave devices (outdoor units 2 to 4, indoor units 1 to n, debugging devices, and monitoring devices) are in the first network 1, and communicate with each other through the first network 1. The indoor machine 1-n and the line controller 1-n are in the third network 3, and the third network 3 is adopted for communication. The difference between the embodiment of fig. 3 and the embodiment of fig. 4 is that: in the embodiment of fig. 3, the main control device and the dedicated device are in the second network 2, and communicate with each other through the second network 2; in the embodiment of fig. 4, the dedicated device is in the first network 1, as well as the master device and the slave device.

The following description will take the first network 1 as CAN communication and the second network 2 as UART communication as an example:

1. identifying master and slave equipment: as shown in fig. 3 and 4, there may be a plurality of external units and a plurality of internal units in the multi-split system, and in the multi-external unit system, one and only one external unit is set as a master control device (a master external unit), and the other external units are set as slave devices (slave external units). In the single outdoor unit system, the outdoor unit is set as the main outdoor unit. The master and slave outdoor units are generally identified and controlled by a combination of hardware and software.

FIG. 5 is a schematic diagram of a dial detection circuit according to some embodiments of the present disclosure. As shown in FIG. 5, the SA terminal is connected to the IO pin of the control chip. When the dial switch is dialed to the ON end, the control chip detects a low level and considers the low level as the main control equipment; when the dial switch is dialed to the OFF end, the control chip detects the high level and considers the slave device.

In the multi-split system shown in fig. 3 and 4, only the dial of the master device is dialed to the ON terminal, and the dials of the other slave devices are all dialed to the OFF terminal. The communication address of the master control equipment is fixed, the slave module applies for the communication address to the master control equipment, the master control equipment allocates the communication address to the slave equipment, and different slave equipment addresses are different.

In some embodiments of the present disclosure, before the unit is powered on, one of the external units is selected as the master device according to the connection, the SA8 dial on the motherboard is set to factory default "00" (default setting "00" shown in fig. 5 represents the master device), and SA8 (master setting code) on the motherboards of the remaining external units is set to "10" (10 "represents the slave device).

2. Judging multiple main faults: the master device plays a leading role in the whole system, and sends a control command (called control data, generally sent by a function code of a control attribute) to the slave device to realize the orderly operation of the whole system. When dialing setting is wrong and a plurality of main control devices are arranged in the system, the main control devices send the control function code data in a communication network, so that the main control devices identify whether the system has the plurality of main control devices by detecting whether the control data which is sent only by the main control devices is received, and report a plurality of main faults when the plurality of main control devices are detected to prompt that the system is abnormal.

3. The special equipment scheme is as follows: in the scheme of sharing the address between the special device and the main control device, the special device and the main control device have the same address, so that the control function code data cannot be sent, and the main control device is prevented from judging a multi-master fault by mistake. The specific device data is transmitted with a specific function code.

4. CAN network data frame sending format:

there are a variety of CAN network data frame formats, and one of the frame formats associated with the disclosed aspects is given in table 1 for illustration.

TABLE 1

In table 1, the function code is used to identify the function and priority of the data frame.

IP address of CAN2 bus: for identifying the IP address of the device at CAN 2. [ 0x7F ] without CAN2 IP address.

IP address of CAN1 bus: for identifying the IP address of the device at CAN 1.

Data type: the method is used for identifying the size (bit/byte/word) of data, reading and writing properties, purposes and the like, and the data of the same category are placed in the same continuous space.

And (3) data segment: containing the starting address of the transmitted data and the valid data stored at the corresponding address.

In some embodiments of the present disclosure, the CAN2 is primarily used in a multisystem installation, i.e., a network in which a plurality of systems are connected by CAN communication. The present solution relates to a single system only.

In some embodiments of the present disclosure, a device in the IP address of CAN1/CAN 2: for control data, the device refers to a target address, namely an address of a controlled object; for status data, the device refers to the device that sent the data.

From the above data frame format it follows that: the communication data frame contains "function code + device address + data category + valid data".

For the control command sent by the master control device, a function code having a meaning of a control function is often used, for example, 0xE7 (hexadecimal), and the device address is an address of a target object, which may be an address of the target object itself, an address of an external unit of the slave device, and an address of an internal unit of the slave device.

For the own status data of the master device, a function code of a status attribute, such as 0xF7 (hexadecimal), is often used, and the device address is its own address, and when it forwards the dedicated device data, the frame format is also adopted.

When the special device is in the first network 1, the address of the special device is the same as that of the main control device, and the 0xF7 function code is also used for sending data, and the special device is specified to be in the subsequent function extension, if other function codes are needed to send data, the 0xE7 function code data cannot be sent, so that the main control device is prevented from false alarm of multiple main faults (when the main control device receives a data frame of which the device address is the same as that of the special device, the function code is 0xE7, and the starting address is located in the data area of the external machine, a plurality of main control devices are considered to be in the system).

The above embodiments of the present disclosure provide a data processing method that is compatible with both topologies of the embodiments in fig. 1 and fig. 2 (or the embodiments in fig. 3 and fig. 4), and does not need to add an address field to a dedicated device. On one hand, the special equipment and the air conditioner controller are in the same communication network, so that data forwarding is avoided, and function expansion is facilitated; on the other hand, the embodiment of the present disclosure can identify the dedicated device data without allocating an address, so as to achieve compatibility of the two schemes.

Fig. 6 is a schematic diagram of some embodiments of the disclosed data communication method. Preferably, the present embodiment can be executed by a dedicated apparatus or an electrical device of the present disclosure. As shown in fig. 6, the method may include at least one of

steps

61 and 62, wherein:

step 61, in the case that the dedicated device 13 of the electrical apparatus is in the first network, the dedicated device 13 uses the same address as the master control device 11 to perform communication in the first network, where the first network is a network in which the master control device 11 and the slave device 12 of the electrical apparatus are located.

In some embodiments of the present disclosure, step 61 may include at least one of steps 611-612, wherein:

in step 611, in a case that the dedicated device 13 is in the first network, after receiving the data of the main control device 11, the dedicated device 13 defines its own address as a main control device address.

In step 612, the dedicated device 13 sends the dedicated device data in the form of the master device address.

In some embodiments of the present disclosure, step 612 may comprise: the special device data is identified by adopting a main control device address and a specific data category mode; and sending the special device data by adopting a main control device address, a specific data category and special device effective data, wherein the specific data category is a special function data category.

In some embodiments of the present disclosure, the step of sending the dedicated device data by using the address of the master device, the specific data category, and the valid data of the dedicated device may include: and sending the special device data to the master control device 11 and the slave device 12 by adopting a specific function code, a master control device address, a specific data category and special device valid data, wherein the specific function code is different from the first function code, and the master control device 11 adopts the first function code to identify the sent control data.

In some embodiments of the present disclosure, the specific function code is a second function code, wherein the second function code is adopted by the master control device 11 to identify the transmitted status data.

Step 62, in case that the dedicated device 13 is not in the first network, the dedicated device 13 sends the dedicated device data to the main control device 11 through the second network, so that the main control device 11 sends the dedicated device data in the first network by using the specific function code, the main control device address, the specific data category and the dedicated device valid data, where the second network is different from the first network.

The above embodiments of the present disclosure provide a data processing method that is compatible with both topologies of the embodiments of fig. 1 and fig. 2 (or the embodiments of fig. 3 and fig. 4), and does not need to add an address segment for a dedicated device. On one hand, the special equipment and the air conditioner controller are in the same communication network in the embodiment of the disclosure, so that data forwarding is avoided and function expansion is facilitated; on the other hand, the embodiment of the present disclosure can identify the dedicated device data without allocating an address, so as to achieve compatibility of the two schemes.

Fig. 7 is a schematic diagram of some embodiments of the disclosed dedicated device. As shown in fig. 7, a dedicated device (e.g., dedicated device 13 of any of fig. 1-4) of the present disclosure may include an address definition module 71 and a first data transmission module 72, wherein:

the address defining module 71 is configured to, when the dedicated device 13 is in a first network, define the own address as a master device address after the dedicated device 13 receives the data of the master device 11, where the first network is a network where the master device 11 and the slave device 12 of the electrical device are located.

A first data sending module 72, configured to send the dedicated device data in a manner of the address of the master device.

In some embodiments of the present disclosure, the dedicated apparatus 13 is a dedicated apparatus 13 of an electrical device.

In some embodiments of the present disclosure, the dedicated device 13 is configured to communicate in the first network using the same address as the master device 11 if the dedicated device 13 is in the first network.

In some embodiments of the present disclosure, the first data sending module 72 is configured to identify the dedicated device data by using the address of the master device and a specific data category; and sending the special device data by adopting a main control device address, a special data category and special device effective data, wherein the special data category is a special function data category.

In some embodiments of the present disclosure, the first data sending module 72 is configured to send the dedicated device data to the master device 11 and the slave device 12 by using a specific function code, a master device address, a specific data category, and valid dedicated device data, where the specific function code is different from the first function code, and the master device 11 uses the first function code to identify the sent control data.

In some embodiments of the present disclosure, as shown in fig. 7, the dedicated device 13 may further include a second data sending module 73, wherein:

and a second data sending module 73, configured to, in a case that the dedicated device 13 is not in the first network, send the dedicated device data to the main control device 11 through the second network, so that the main control device 11 sends the dedicated device data in the first network in a manner of using the specific function code, the main control device address, the specific data category, and the dedicated device valid data, where the second network is different from the first network.

In some embodiments of the present disclosure, the dedicated device 13 may be used to implement the method related to any of the above-described embodiments of the present disclosure (e.g., the embodiment of fig. 6).

Fig. 8 is a schematic structural diagram of another embodiment of the special device of the present disclosure. As shown in fig. 8, the dedicated device includes a memory 81 and a processor 82.

The memory 81 is used for storing instructions, the processor 82 is coupled to the memory 81, and the processor 82 is configured to execute a method related to implementing any of the above-mentioned embodiments (e.g., the embodiment of fig. 6) based on the instructions stored in the memory.

As shown in fig. 8, the dedicated device further comprises a communication interface 83 for information interaction with other devices. Meanwhile, the special device further comprises a bus 84, and the processor 82, the communication interface 83 and the memory 81 are communicated with each other through the bus 84.

The memory 81 may include a high-speed RAM memory, and may further include a non-volatile memory (e.g., at least one disk memory). The memory 81 may also be a memory array. The storage 81 may also be partitioned into blocks, and the blocks may be combined into virtual volumes according to certain rules.

Further, the processor 82 may be a central processing unit CPU, or may be an application specific integrated circuit ASIC, or one or more integrated circuits configured to implement embodiments of the present disclosure.

According to another aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, which when executed by a processor, implement the data communication method according to any one of the embodiments (for example, the embodiment of fig. 6) above.

As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may 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, and so forth) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may 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 means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The special purpose devices, master devices, data processing units, address definition modules, first data transmission modules and second data transmission modules described above may be implemented as a general purpose processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof for performing the functions described herein.

Thus far, the present disclosure has been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware to implement the steps.

The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A method of data communication, comprising:

2. The data communication method according to claim 1, wherein, in the case that the dedicated device of the electrical appliance is in the first network, the dedicated device communicating on the first network using the same address as the master device comprises:

3. The data communication method according to claim 2, wherein the transmitting of the dedicated device data in the form of the master device address comprises:

4. The data communication method according to any of claims 1 to 3, wherein said transmitting the dedicated device data in a manner of the master device address, the specific data class and the dedicated device valid data comprises:

5. The data communication method of claim 4, wherein:

the specific function code is a second function code, wherein the main control device adopts the second function code to identify the sent status data.

6. The data communication method of claim 4, further comprising:

7. A special-purpose apparatus, wherein,

the special equipment is special equipment for an electrical device;

the special device is used for communicating in a first network by adopting the same address as the main control device under the condition that the special device is in the first network, wherein the first network is a network where the main control device and the slave device of the electric appliance device are positioned.

8. The dedicated device according to claim 7, comprising:

the address definition module is used for defining the address of the special equipment as the address of the main control equipment after the special equipment receives the data of the main control equipment under the condition that the special equipment is in the first network;

9. The dedicated device according to claim 8, wherein:

the first data sending module is used for identifying the special equipment data by adopting a main control equipment address and a specific data category mode; and sending the special device data by adopting a main control device address, a specific data category and special device effective data, wherein the specific data category is a special function data category.

10. The dedicated device according to any one of claims 7-9, wherein:

the first data sending module is used for sending the special equipment data to the master control equipment and the slave equipment in a mode of adopting a specific function code, a master control equipment address, a specific data category and special equipment effective data, wherein the specific function code is different from the first function code, and the master control equipment adopts the first function code to identify the sent control data.

11. The dedicated device according to claim 10, wherein:

12. The dedicated device according to claim 10, further comprising:

13. A dedicated device comprising:

a memory to store instructions;

a processor configured to execute the instructions to cause the special purpose apparatus to perform operations to implement the data communication method of any of claims 1-6.

14. An appliance apparatus comprising a master device, a slave device and a dedicated device according to any one of claims 7-13.

15. The electrical device of claim 14, wherein:

and the main control equipment is used for identifying the sent control data by adopting the first function code and identifying the sent state data by adopting the second function code.

16. The electrical device of claim 14 or 15, wherein:

the master control equipment is used for judging whether the special equipment is in a first network where the master control equipment and the slave equipment are located; and under the condition that the special equipment is not in the first network, receiving the special equipment data sent by the special equipment, and sending the special equipment data by adopting a specific function code, a main control equipment address, a specific data category and special equipment valid data.

17. The appliance apparatus of claim 16, wherein the master device includes a data processing unit, wherein:

the master control equipment is used for judging whether the special equipment is in a first network where the master control equipment and the slave equipment are located; under the condition that the special equipment is not in the first network, calling a data processing unit to receive the special equipment data sent by the special equipment, and sending the special equipment data by adopting a specific function code, a main control equipment address, a specific data category and a special equipment effective data mode; under the condition that the special equipment is in the first network, the data processing unit is not called, and the special equipment sends the special equipment data by adopting a specific function code, a main control equipment address, a specific data category and a special equipment valid data mode.

18. A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions which, when executed by a processor, implement the data communication method of any one of claims 1-6.