CN110768939A - Data frame configuration method, equipment control method and equipment control system - Google Patents
Data frame configuration method, equipment control method and equipment control system Download PDFInfo
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- CN110768939A CN110768939A CN201810847432.4A CN201810847432A CN110768939A CN 110768939 A CN110768939 A CN 110768939A CN 201810847432 A CN201810847432 A CN 201810847432A CN 110768939 A CN110768939 A CN 110768939A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/26—Special purpose or proprietary protocols or architectures
Abstract
The invention provides a configuration method, a device control method and a device control system of a data frame. The configuration method of the data frame comprises the following steps: determining a function code and function data corresponding to the function according to the function to be processed; and configuring the data frame according to the function code and the function data, wherein the function code is configured in a function code field which is positioned at the head of the data part of the data frame, and the function data is configured in a valid data field of the data frame. According to the invention, the data frame is configured according to the function to be processed, the problem of poor system expansibility caused by the frame format of the power peak shaving system in the related technology is solved, and the expansibility of the power peak shaving system is improved.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method for configuring a data frame, a device control method, and a device control system.
Background
Data transmission between a device and a concentrator in a power peak shaving system is generally well regulated by means of a protocol. The communication mode adopted between most of the power peak regulation system concentrators and equipment is wireless communication or power line carrier communication, and the data transmission in the mode is a master-slave roll-call mode, namely, the concentrators roll call slave data. In the power peak-shaving system, the same data is issued to the same or functionally similar devices through the peak-shaving action, wherein the data is in a fixed frame format, namely a head code + a device address + valid data + a check code + a tail code, and the state or control device of the device is acquired, and the mode needs to know the address of the device and acquire or send the whole data. Since all data can be transmitted or received in only one frame, when new functions are added, each device needs to change the resolution bit of the whole frame.
For example, there are 10 air conditioners and 10 fans in the current power peak shaving system, and the original control data composition thereof is shown in table 1.
Table 1 correspondence table of functions and control data of devices in the prior art
Since the format of the data frame is: in this format, since there is no field indicating the start address of data and the number of data, valid data can only transmit all of the bytes 0 to 3 (i.e., each device knows the length of valid data, which is fixed). If the control on the operation mode of the air conditioners needs to be added at the moment, each air conditioner needs to update the analysis of the whole frame; also, if the fans add control of "run mode," each fan needs to update the resolution of the entire frame. The updating here is that whether the fan or the air conditioner executes the control of the 'operation mode', the updating analysis is needed, otherwise, according to the new frame format, since the valid data is lengthened by one byte, the verification cannot be made according to the length of the original valid data.
Therefore, the frame format of the conventional power peak shaving system causes poor communication expansibility; the frame format of the existing power peak shaving system controls the equipment according to the equipment address, so that the problem of low communication efficiency is caused.
Disclosure of Invention
The invention provides a configuration method of a data frame, a device control method and a device control system, which are used for at least solving the problem of poor expansibility of a system caused by a frame format of a power peak shaving system in the related art.
In a first aspect, an embodiment of the present invention provides a method for configuring a data frame, where the method includes:
determining a function code and function data corresponding to a function according to the function to be processed;
and configuring a data frame according to the function code and the function data, wherein the function code is configured in a function code field which is positioned at the head of a data part of the data frame, and the function data is configured in a valid data field of the data frame.
In a second aspect, an embodiment of the present invention provides an apparatus control method, where the method includes:
a control terminal configures a first data frame according to the configuration method of the data frame in the first aspect, wherein a function code configured in a function code field of the first data frame is a control code or a query code;
and the control end sends the first data frame to equipment so that the equipment can perform function processing according to the first data frame.
In a third aspect, an embodiment of the present invention provides an apparatus control system, where the system includes: a control terminal and a device, wherein the control terminal controls the device according to the device control method of the first aspect.
According to the configuration method, the equipment control method and the equipment control system of the data frame provided by the embodiment of the invention, the function code and the function data corresponding to the function are determined according to the function to be processed; the data frame is configured according to the function code and the function data, wherein the function code is configured in the function code field which is positioned at the head of the data part of the data frame, and the function data is configured in the effective data field of the data frame, so that the data frame is configured according to the function to be processed, the problem that the frame format of the power peak shaving system in the related art causes poor expansibility of the system is solved, and the expansibility of the power peak shaving system is improved.
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 a configuration method of a data frame according to an embodiment of the present invention;
FIG. 2 is a frame structure diagram of a data frame according to an embodiment of the present invention;
FIG. 3 is a flow chart of a device control method according to an embodiment of the present invention;
FIG. 4 is a schematic block diagram of an appliance control system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a power peaking system according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In this embodiment, a method for configuring a data frame is provided, and fig. 1 is a flowchart of a method for configuring a data frame according to an embodiment of the present invention, as shown in fig. 1, the flowchart includes the following steps:
step S101, determining a function code and function data corresponding to a function according to the function to be processed;
step S102, configuring a data frame according to a function code and function data, wherein the function code is configured in a function code field, the function code field is positioned at the head of a data part of the data frame, and the function data is configured in a valid data field of the data frame.
Through the steps, the function code and the function data corresponding to the function are determined according to the function to be processed, and the function code field is configured in the function code field positioned at the head of the data part of the data frame, so that the equipment is controlled according to the function, and the equipment can determine whether the data frame is related to the equipment according to the function code which is firstly analyzed in the data part, and further the communication efficiency is improved. When the function needs to be expanded, only the analysis protocol of the related equipment needs to be updated, and the equipment which is irrelevant to the expansion does not need to be updated, so that the expansibility of the system is improved. By applying the configuration method of the data frame in the power peak shaving system, the problem of poor expansibility of the power peak shaving system can be solved.
Optionally, the data frame includes at least, but is not limited to: a function code field, a data length field, a data category field, a start address field, a valid data field, and a check field.
The function code field is used for representing the description of the data application attribute and dividing the function of the data application attribute; the data length field is used for indicating the specific length of the valid data; the data category field is used to define valid data according to the function code. The start address field is used to define the location of valid data according to the function code.
Wherein the data in the valid data field comprises: specific function data corresponding to the function code. For example, when the function code is a control code related to wind speed, these specific function data may be used to represent specific values of wind speed that need to be adjusted; when the function code is a state code related to the wind speed, the specific function data can be used for representing a specific numerical value of the wind speed after the wind speed is adjusted by the equipment or a state value of whether the wind speed is adjusted by the equipment or not; when the function code is a query code related to the wind speed, the specific function data may be null; when the function code is a response code related to the wind speed, these specific function data can be used to represent a specific numerical value of the current wind speed of the device.
It should be noted that a complete data frame includes a header (also called a header), a data portion and an end (also called an end code), and the functional code field in this embodiment refers to the first field of the data portion (the functional code field, the data length field, the data type field, the start address field, the valid data field and the check field) of the data frame.
Optionally, an address field indicating the device address is no longer included in the data frame.
Optionally, the data length of the function code field, the data length field, the data type field, the start address field and the check field in the data frame is fixed.
Optionally, the data length of the valid data field in the data frame is variable.
Fig. 2 is a frame structure diagram of a data frame according to an embodiment of the present invention. It should be noted that, since the frame header and the frame trailer are not modified in this embodiment, the frame header and the frame trailer are not shown in the frame structure diagram of the embodiment of the present invention.
As shown in fig. 2, optionally, the data length of the function code field in the data frame is 1 Byte (Byte), the data length of the data length field is 1 Byte, the data length of the data type field is 1 Byte, the data length of the start address field is 1 Byte, the data length of the valid data field is N bytes, and the data length of the check field is 2 bytes, where N is a positive integer greater than or equal to 1. It should be noted that the above data lengths are only one preferred example, and in practical applications, the data lengths may be adjusted as needed.
Optionally, the function code comprises one of: control code, status code, inquiry code and response code. The data frame carrying the control code is used for controlling the equipment by the control end, and the data frame carrying the status code is used for responding to the data frame carrying the control code sent by the control end by the equipment; the data frame carrying the query code is used for the control end to query the state of the equipment, and the data frame carrying the response code is used for the equipment to respond to the data frame carrying the query code sent by the control end.
In this embodiment, a device control method is further provided, and fig. 3 is a flowchart of the device control method according to the embodiment of the present invention, as shown in fig. 3, the method includes the following steps:
step S301, a control terminal configures a first data frame according to a configuration method of the data frame, wherein a function code configured in a function code field of the first data frame is a control code or a query code;
step S302, the control end sends a first data frame to the equipment so that the equipment can perform function processing according to the first data frame.
Optionally, the method further comprises: the device receives a first data frame; the equipment analyzes the first data frame from the function code field; under the condition that the function code in the field of the analyzed function code is the function code related to the equipment, the equipment continues to analyze other fields of the first data frame; and the equipment processes the function corresponding to the function code according to the function data in the effective data field.
Optionally, the method further comprises: in the case that the function code in the field of the function code is analyzed to be a function code irrelevant to the device, the device does not analyze other fields of the first data frame any more, and discards the first data frame.
Optionally, after the device processes the function corresponding to the function code according to the function data in the valid data field, the method further includes: the equipment configures a second data frame according to the configuration method of the data frame, wherein the function code configured in the function code field of the second data frame is a status code or a response code; and the equipment sends the second data frame to the control end.
In this embodiment, a device control system is further provided, and fig. 4 is a schematic structural diagram of the device control system according to the embodiment of the present invention, as shown in fig. 4, the system includes: a control terminal 41 and a device 42, wherein the control terminal 41 controls the device according to the device control method described above.
The above device control method may be applied to a power peak shaving system, fig. 5 is a schematic structural diagram of the power peak shaving system according to the embodiment of the present invention, and as shown in fig. 5, a control end in the system includes: remote client, main/standby server, network (internet, and mobile communication network), concentrator; the devices may communicate wirelessly with the concentrator via wireless communication modules (such as the LoRa module shown in fig. 5) or wired communication (including but not limited to ethernet communication, power line carrier communication, etc.).
In addition, in combination with the method for configuring a data frame or the method for controlling a device in the foregoing embodiments, embodiments of the present invention may provide a computer-readable storage medium to implement the method. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement a method for configuring a data frame or a method for controlling a device in any of the above embodiments.
In order that the description of the embodiments of the invention will be more apparent, reference is now made to the preferred embodiments for illustration.
The preferred embodiment provides a power peak shaving method based on the configuration method of the data frame and the equipment control method.
Referring to the frame structure shown in fig. 2, in the preferred embodiment, the device address is removed from the data frame, the device address is no longer distinguished, the data of all devices are classified and integrated, and different types of devices all parse the same data frame. Taking the control code as an example, table 2 shows the correspondence between the control function code and the controlled function.
Table 2 table of correspondence between control function code and controlled function in this embodiment
When the upper layer needs to perform power peak regulation and limit power consumption on the equipment, a command of controlling a function code is issued, only one frame of data is forwarded to the equipment, the fan and the air conditioner make judgment according to the function code of the frame of data, if the frame of data is the control function code, whether a data frame containing self control information exists is searched according to protocol analysis, and if the frame of data exists, the equipment performs corresponding operation according to the function frame.
When the mode is used, when the 'operation mode' needs to be newly added in the air conditioner and the fan, only the equipment needing to be analyzed needs to be added at any place of the protocol, the equipment needing to be analyzed is upgraded or directly added into the communication network, the equipment which is or does not need to be upgraded does not respond to the operation of the 'operation mode' when the upper layer issues and controls the 'operation mode', and the equipment can still respond when the lower layer issues and controls the original function.
The protocol data and the equipment are divided according to different function applications among the equipment, the data and different purposes of the equipment are distinguished in a function code mode, the data and the equipment are distributed to be data and equipment with the same function, the equipment only analyzes the data of the function code of the equipment, the address of the equipment does not need to be known when the data are sent, the change of a certain frame of function data does not influence the sending of other data frames, when new functions are added, only the corresponding function code analysis needs to be added to the related equipment, and the original data analysis is kept by the other equipment which is not related, so that the universality and the expansibility of the protocol are greatly increased, and the communication efficiency is improved.
The above preferred embodiment has been described by taking a function code as an example of the control code, and the function code may be a status code, a query code, or a response code. The control code corresponds to the status code, and is collectively referred to as a control/status code, and the data frame carrying the control/status code is referred to as a control/status function frame. The inquiry code corresponds to the response code, collectively referred to as inquiry/response code, and the data frame carrying the inquiry/response code is referred to as an inquiry/response function frame.
The control/status function frame function is used for the host computer to send control data, and the sub computer to send self status data. The data category comprises a specific control data category related to the controlled equipment, and the joint function code is used for associating data and the equipment; the initial address comprises the position of specific data, and can also complete the association of the data and the equipment by combining the function code, the data category and the initial address; its valid data includes the primary control/status data.
The inquiry/response function frame is used for inquiring the node data of the equipment, the data category of the inquiry/response function frame comprises a specific control data category related to the controlled equipment, and the joint function code is used for associating the data with the equipment; the initial address comprises the position of specific data, and the association of the data and the equipment can be completed by combining the function code, the data category and the initial address; its valid data contains the data of the query.
In summary, according to the embodiments of the present invention, the application data and the functions of the devices are divided, and the data and the devices with different functions can be directly classified, when new functions are added, only the related devices need to add corresponding function code analysis, and the other devices that are not involved keep the original data analysis, so that the universality and the expansibility of the protocol are greatly increased, and the communication efficiency is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A method for configuring a data frame, the method comprising:
determining a function code and function data corresponding to a function according to the function to be processed;
and configuring a data frame according to the function code and the function data, wherein the function code is configured in a function code field which is positioned at the head of a data part of the data frame, and the function data is configured in a valid data field of the data frame.
2. The method of claim 1, wherein the data frame comprises at least: a function code field, a data length field, a data category field, a start address field, a valid data field, and a check field.
3. The method of claim 2, wherein the data length of the function code field, the data length field, the data type field, the start address field, and the check field in the data frame is fixed.
4. The method of claim 2, wherein the data length of the valid data field in the data frame is variable.
5. The method of claim 4, wherein the data length of the function code field in the data frame is 1 byte, the data length of the data length field is 1 byte, the data length of the data type field is 1 byte, the data length of the start address field is 1 byte, the data length of the valid data field is N bytes, and the data length of the check field is 2 bytes, where N is a positive integer greater than or equal to 1.
6. The method according to any of claims 1 to 5, wherein the function code comprises one of: control code, status code, inquiry code and response code.
7. An apparatus control method, characterized in that the method comprises:
the control end configures a first data frame according to the method for configuring a data frame of any one of claims 1 to 5, wherein the function code configured in the function code field of the first data frame is a control code or a query code;
and the control end sends the first data frame to equipment so that the equipment can perform function processing according to the first data frame.
8. The method of claim 7, further comprising:
the device receiving the first data frame;
the equipment analyzes the first data frame from the function code field;
under the condition that the function code in the function code field is analyzed to be the function code related to the equipment, the equipment continues to analyze other fields of the first data frame;
and the equipment processes the function corresponding to the function code according to the function data in the effective data field.
9. The method of claim 8, further comprising:
and under the condition that the function codes in the function code fields are analyzed to be function codes irrelevant to the equipment, the equipment does not analyze other fields of the first data frame any more, and discards the first data frame.
10. The method of claim 8, wherein after the device processes the function of the device corresponding to the function code according to the function data in the valid data field, the method further comprises:
the device configures a second data frame according to the data frame configuration method of any one of claims 1 to 5, wherein the function code configured in the function code field of the second data frame is a status code or an acknowledgement code;
and the equipment sends the second data frame to the control end.
11. An appliance control system, the system comprising: a control terminal and an apparatus, wherein the control terminal controls the apparatus according to the apparatus control method according to any one of claims 7 to 10.
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