CN111122966A - Load identification module data transmission method, device and system - Google Patents
Load identification module data transmission method, device and system Download PDFInfo
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- CN111122966A CN111122966A CN201911399365.5A CN201911399365A CN111122966A CN 111122966 A CN111122966 A CN 111122966A CN 201911399365 A CN201911399365 A CN 201911399365A CN 111122966 A CN111122966 A CN 111122966A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
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Abstract
The invention provides a data transmission method, a device and a system of a load identification module, which relate to the technical field of electric energy meter data transmission. The data frame comprises a frame sequence number used for determining frame loss information, the integrity of data transmission can be timely acquired, the problem of low transmission accuracy caused by neglecting data loss is solved, and the effect of enabling the data transmission to be simpler and more efficient is achieved, so that the transmission accuracy is further improved.
Description
Technical Field
The invention relates to the technical field of electric energy meter data transmission, in particular to a load identification module data transmission method, device and system.
Background
Driven by the national energy management demand, the national power grid increases the universal communication planning of the ubiquitous power internet of things on the basis of the requirement of strengthening interconnection and intercommunication on a strong intelligent power grid. The non-intrusive load identification technology is used as an expansion module of the electric energy meter, and electricity utilization information interaction between a power grid manager and an electricity utilization user can be realized. At present, the application of a non-invasive load identification technology in an electric energy meter is in a development stage, and the data transmission mode between modules is complex, so that the transmission efficiency is not high; in addition, in the prior art, a phenomenon that partial data is lost and difficult to find often occurs during data transmission, so that data transmission is incomplete and the accuracy is low.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method, an apparatus and a system for transmitting data of a load identification module, so as to alleviate the problems in the prior art that the data transmission manner between modules is complicated and the transmission accuracy is low due to the fact that data loss is easily ignored.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, an embodiment of the present invention provides a data transmission method for a load identification module, where the method is applied to the load identification module, and the method includes:
receiving configuration parameters sent by a management core module; wherein the configuration parameters are sent by the metering core module to the management core module;
determining the communication connection between the load identification module and the metering core module according to the configuration parameters;
receiving a data frame sent by the metering core module based on the communication connection, and carrying out load identification processing on the data frame; the data frame comprises a frame sequence number, and the frame sequence number is used for determining frame loss information.
In an alternative embodiment, the data frame further comprises a command symbol, wherein the command symbol is used for indicating the type of the electric energy meter, and the type of the electric energy meter comprises single-phase, three-phase and single-phase zero-line; the electric energy meter type is used for determining the transmission sequence of the sampling data; the sampled data includes voltage sampled values and current sampled values.
In an alternative embodiment, the commander comprises a first commander, a second commander and a third commander; the first command symbol indicates that the type of the electric energy meter is single-phase, and the first transmission sequence of the sampling data is as follows: single-phase voltage sampling values and single-phase current sampling values; the second command symbol indicates that the type of the electric energy meter is three-phase, and the second transmission sequence of the sampling data is as follows: three-phase voltage sampling values and three-phase current sampling values; the third command symbol indicates that the type of the electric energy meter is a single-phase zero line, and the third transmission sequence of the sampling data is as follows: single-phase voltage sampling value, single-phase current sampling value and zero line current sampling value.
In an alternative embodiment, the data frame further comprises: a data field and an accumulated sum; the data field is used for storing sampling data, and the sampling data comprises a voltage sampling value and a current sampling value; the accumulated sum is used for checking the accuracy of the data frame transmission.
In an alternative embodiment, the data frame further comprises: a start symbol, a length field, and an end symbol; the start indicator is used for indicating the start of the data frame; the length field is used for indicating the number of bytes of the data frame except for the start character and the end character; the end indicator is used to indicate the end of the data frame.
In a second aspect, an embodiment of the present invention provides a load identification module data transmission method, which is applied to a management core module, and the method includes:
receiving configuration parameters sent by a metering core module;
determining connection information of a load identification module; the connection information is used for indicating that the load identification module is connected to the electric energy meter;
reading a parameter information table of the load identification module based on the connection information, and sending request information to the load identification module; wherein the parameter information table includes a first type of the load identification module;
receiving response information sent by the load identification module, wherein the response information comprises a second type of the load identification module;
and determining whether the load identification module is successfully configured according to the first type and the second type.
In an alternative embodiment, the method further comprises: when the load identification module is configured successfully, based on the first type of the load identification module, sending the configuration parameters to the load identification module; when the load identification module fails to be configured, the load identification module is reconfigured until a specified number of times of configuration fails, and the load identification module is reset.
The load identification module data transmission method provided by the embodiment of the invention is applied to a management core module, reads the first type in the parameter information table of the load identification module by determining the connection information of the load identification module, compares the first type with the received second type of the load identification module, and determines whether the load identification module is successfully configured, so that the flexible communication connection between the management core module and the load identification module is realized, and the data transmission between the management core module and the load identification module is more convenient.
In a third aspect, an embodiment of the present invention provides a data transmission apparatus for a load identification module, where the apparatus includes: the first receiving module is used for receiving the configuration parameters sent by the management core module; wherein the configuration parameters are sent by the metering core module to the management core module; the first determination module is used for determining the communication connection between the load identification module and the metering core module according to the configuration parameters; the load identification module is used for receiving the data frame sent by the metering core module based on the communication connection and carrying out load identification processing on the data frame; the data frame comprises a frame sequence number, and the frame sequence number is used for determining frame loss information.
In a fourth aspect, an embodiment of the present invention provides a data transmission apparatus for a load identification module, where the apparatus includes:
the second receiving module is used for receiving the configuration parameters sent by the metering core module;
the second determining module is used for determining the connection information of the load identification module; the connection information is used for indicating that the load identification module is connected to the electric energy meter;
the reading module is used for reading a parameter information table of the load identification module based on the connection information and sending request information to the load identification module; wherein the parameter information table includes a first type of the load identification module;
the second receiving module is further configured to receive response information sent by the load identification module, where the response information includes a second type of the load identification module;
and the second determining module is further used for determining whether the load identification module is successfully configured according to the first type and the second type.
In a fifth aspect, an embodiment of the present invention provides a load identification module data transmission system, including the load identification module of any one of the foregoing embodiments, the management core module of any one of the foregoing embodiments, and a metering core module connected to the management core module.
The method is applied to the load identification module, determines the communication connection between the load identification module and the metering core module according to the configuration parameters by receiving the configuration parameters sent by the management core module, receives the data frame sent by the metering core module based on the communication connection, further carries out load identification processing on the data frame, and relieves the problem of complex data transmission mode among modules. The data frame comprises a frame sequence number used for determining frame loss information, the integrity of data transmission can be timely acquired, the problem of low transmission accuracy caused by neglecting data loss is solved, and the effect of enabling the data transmission to be simpler and more efficient is achieved, so that the transmission accuracy is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flowchart of a data transmission method for a load identification module according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of another data transmission method for a load identification module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a data transmission apparatus of a load identification module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another load identification module data transmission apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a data transmission system of a load identification module according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a specific data transmission system of a load identification module according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Because the application of the non-invasive load identification technology in the electric energy meter is in a development stage at present, modules produced by different manufacturers are difficult to communicate and exchange, and data transmission among the modules has limitation. The data transmission mode between the modules is complex, so that the transmission efficiency is not high; in addition, in the prior art, a phenomenon that partial data is lost and difficult to find often occurs during data transmission, so that data transmission is incomplete and the accuracy is low.
Based on this, the embodiments of the present invention provide a method, an apparatus, and a system for transmitting data of a load identification module, so as to alleviate the problems of the prior art, such as the limitation of data transmission of the load identification module and the low transmission accuracy.
To facilitate understanding of the present embodiment, first, a detailed description is given to a load identification module data transmission method disclosed in the embodiment of the present invention, referring to a flow diagram of a load identification module data transmission method shown in fig. 1, where the method mainly includes the following steps S110 to S130:
and S110, receiving the configuration parameters sent by the management core module. The configuration parameters are sent to the management core module by the metering core module;
the load identification module may be non-intrusive and has a capability of measuring signals carrying power information such as voltage, current and the like of the obtained total load. The metering core module can be used for sampling voltage signals and current signals of a circuit connected with the electric energy meter, and can also be used for electric energy metering and the like. The management core module can be used for comprehensively managing information of the electric energy meter, such as: cost control, display, external communication, event recording, data freezing, load control and the like.
The configuration parameters can be obtained from the metering core module, and can include a voltage coefficient, a current coefficient, a phase coefficient, a zero line current coefficient, a deviation decimal number, an electric energy meter type, a cycle point number and a sampling data length, and a specific electric energy meter configuration parameter description is shown in table 1-1.
Tables 1 to 1: description of configuration parameters of electric energy meter
In some embodiments, the configuration parameters are sent to the management core module by the metrology core module and are obtained by the management core module after normalization processing. Specifically, since parameters such as reference voltage, AD accuracy, correction coefficient, angular difference compensation, and the like may be different for each electric energy meter, the voltage coefficient, the current coefficient, and the phase compensation coefficient are configuration parameters obtained by normalizing the management core according to the calibration parameters specific to each meter. For example: assuming that the current raw data is 121, the current conversion factor in the configuration parameters is 100, and the offset decimal place is 4, 121 × 100 calculated by the non-intrusive load identification module is 12100, and in combination with the offset decimal place 4, the true current value is 1.2100 a.
And S120, determining the communication connection between the load identification module and the metering core module according to the configuration parameters.
In some embodiments, the load identification module and the metering core module may adopt SPI Serial Peripheral Interface (Serial Peripheral Interface) unidirectional communication, the metering core module is a master, and the load identification module is a slave. One specific data transmission method may be: the measurement core module sends original data to the load identification module in real time, the original data requires 256 maximum (32, 64, 128 and 256 configurable) sampling points of single cycle, and the SPI communication speed range is 1-6 Mbps.
S130, receiving the data frame sent by the metering core module based on the communication connection, and carrying out load identification processing on the data frame; the data frame includes a frame sequence number, which is used to determine frame loss information.
The data frame sent by the metering core module comprises original AD sampling data, and the data frame is not subjected to metering core preprocessing, so that more subsequent deep applications are facilitated, and effective precision can be ensured.
In some embodiments, the data frame further includes a commander for indicating a power meter type, the power meter type including single-phase, three-phase, and single-phase zero-line; the type of the electric energy meter is used for determining the transmission sequence of the sampling data; the sampled data includes voltage sampled values and current sampled values.
In some embodiments, the commander comprises a first commander, a second commander and a third commander; the first command symbol indicates that the type of the electric energy meter is single-phase, and the first transmission sequence of the sampling data is as follows: single-phase voltage sampling values and single-phase current sampling values; the second command symbol indicates that the type of the electric energy meter is three-phase, and the second transmission sequence of the sampling data is as follows: three-phase voltage sampling values and three-phase current sampling values; the third command symbol indicates that the type of the electric energy meter is a single-phase zero line, and the third transmission sequence of the sampling data is as follows: single-phase voltage sampling value, single-phase current sampling value and zero line current sampling value.
For example, when the command symbol is the first command symbol, the transmission sequence of the voltage sample value and the current sample value is as follows: 3 byte voltage sampling values and 3 byte current sampling values; when the command symbol is a second command symbol, the transmission sequence of the voltage sampling value and the current sampling value is as follows: a 3-byte A phase voltage sampling value, a 3-byte B phase voltage sampling value, a 3-byte C phase voltage sampling value, a 3-byte A phase current sampling value, a 3-byte B phase current sampling value and a 3-byte C phase current sampling value; when the command symbol is a third command symbol, the transmission sequence of the voltage sampling value and the current sampling value is as follows: 3 bytes of voltage sampling values, 3 bytes of current sampling values and 3 bytes of zero line current sampling values.
In some embodiments, the data frame further comprises: a data field and an accumulated sum; the data field is used for storing sampling data, and the sampling data comprises a voltage sampling value and a current sampling value; the accumulated sum is used to verify the accuracy of the data frame transmission.
The data field is used for transmitting a plurality of sampling voltage values and sampling current values, and the accumulated sum can be used for checking the accuracy of data frame transmission by calculating the length of a data frame, particularly the data length of a command symbol and the data field. For example, a sender (metering core module) of the data frame may accumulate and calculate the data frame to obtain a first accumulated sum; the receiver (load identification module) of the data frame compares the first accumulation sum with the second accumulation sum, so that whether each byte data of the data frame is changed in the transmission process can be judged, and whether the received data is correct or not is determined.
In some embodiments, the data frame further comprises: a start symbol, a length field, and an end symbol; the start indicator is used for indicating the start of a data frame; the length field is used for indicating the number of bytes of the data frame except for the start character and the end character; the end indicator is used to indicate the end of the data frame.
It should be noted that, when byte data of a data frame changes during transmission, the length of the data frame does not change; when byte data of a data frame is lost in the transmission process, the data length of the data frame between a metering core module (a sender) and a load identification module (a receiver) is changed, for example, a voltage sampling value in a certain data domain is lost in the transmission process, the accumulated sum of the receiver is inconsistent with the accumulated sum of the sender, and the frame number is also changed, so that the frame number can be used for determining the information of the lost data, thereby determining the integrity degree of the data frame received by the load identification module, and further improving the transmission accuracy.
Tables 1-2 show a specific data frame structure description. In addition, the transmission sequence of the data frames can adopt a small-end mode; the frame sequence number can be used for judging whether the data has a frame loss; 31H/33H/34H denote first command symbol/second command symbol/third command symbol, respectively.
Tables 1 to 2: description of data frame structure
The load identification module data transmission method disclosed by the embodiment of the invention is applied to a load identification module, determines the communication connection between the load identification module and the metering core module according to the configuration parameters by receiving the configuration parameters sent by the management core module, and further carries out load identification processing on the data frame by receiving the data frame sent by the metering core module based on the communication connection, thereby relieving the problem of more complex data transmission mode among modules. The data frame comprises a frame sequence number used for determining frame loss information, the integrity of data transmission can be timely acquired, the problem of low transmission accuracy caused by neglecting data loss is solved, and the effect of enabling the data transmission to be simpler and more efficient is achieved, so that the transmission accuracy is further improved.
The embodiment of the present invention provides another load identification module data transmission method, which is applied to a management core module, and refer to a flow diagram of another load identification module data transmission method shown in fig. 2, where the method mainly includes the following steps S210 to S240:
s210, receiving configuration parameters sent by a metering core module;
specifically, after the electric energy meter is powered on and stabilized, the management core module receives configuration parameters sent by the metering core module, and the description of the configuration parameters is shown in table 1-1.
S220, determining the connection information of the load identification module; the connection information is used for indicating that the load identification module is connected to the electric energy meter;
s230, based on the connection information, reading a parameter information table of the load identification module, and sending request information to the load identification module, wherein the parameter information table comprises a first type of the load identification module;
specifically, the management core module may automatically detect a COM _ RQ pin of the load identification module, determine whether the module is accessed, and after confirming that the load identification module is accessed, the management core module waits for 3 seconds and then reads a logic device list of the load identification module, where the logic device list may be a parameter information table carried by the load identification module and includes information such as a type of the load identification module, and the management core module may read the first type of the load identification module according to the parameter information table and send request information to the load identification module.
S240, receiving response information sent by the load identification module, wherein the response information comprises a second type of the load identification module;
and S250, determining whether the load identification module is successfully configured according to the first type and the second type.
Specifically, based on the request information sent by the management core module, the load identification module sends a response message, that is, a second type is sent to the management core module, and the second type is used for indicating the actual type of the load identification module. Comparing the first type read by the management core module with the actual type (second type) sent by the load identification module, wherein if the first type is the same as the second type, the load identification module is successfully configured, and data transmission can be carried out through the management core module; if the first type is not the same as the second type, the configuration fails, and steps S230 to S250 are re-executed.
In some embodiments, the above method further comprises the steps of:
step A: and when the load identification module is successfully configured, based on the first type of the load identification module, sending configuration parameters to the load identification module.
And B: when the load identification module fails to be configured, the load identification module is reconfigured until the specified number of times of configuration fails, and the load identification module is reset.
The step of reconfiguring the load identification module includes steps S230 to S250, where the specified number of times may be 3 times, that is, after the load identification module fails to be configured for 3 times, the management core module may reset the load identification module through the RST pin of the load identification module.
In some embodiments, the above method further comprises the following step C:
and C: and sending a starting data output instruction value to the core measuring module.
Specifically, after the load identification module is successfully configured, the load identification module establishes communication connection with the management core module, the management core module sends a data output starting instruction to the metering core module at the moment, and the metering core module sends a data frame containing sampling data to the load identification module according to the instruction; the load identification module can read the sampling data sent by the metering core module through the established SPI communication interface, and carries out load identification algorithm processing to analyze the information such as the type, the power consumption and the like of the electrical equipment. And when the management core module cannot detect the connection information of the load identification module, namely the load identification module is pulled out, the communication is stopped.
The load identification module data transmission method disclosed by the embodiment of the invention is applied to a management core module, reads the first type in the parameter information table of the load identification module by determining the connection information of the load identification module, compares the first type with the received second type of the load identification module, and determines whether the load identification module is successfully configured, so that the flexible communication connection between the management core module and the load identification module is realized, and the data transmission is more convenient.
As to the load identification module data transmission method applied to the load identification module provided in the foregoing embodiment, an embodiment of the present invention further provides a load identification module data transmission apparatus, referring to a schematic structural diagram of a load identification module data transmission apparatus shown in fig. 3, the apparatus includes the following components:
a first receiving module 310, configured to receive the configuration parameters sent by the management core module; the configuration parameters are sent to the management core module by the metering core module;
a first determining module 320, configured to determine a communication connection between the load identification module and the metering core module according to the configuration parameters;
the load identification module 330 is configured to receive the data frame sent by the metering core module based on the communication connection, and perform load identification processing on the data frame; the data frame includes a frame sequence number, which is used to determine frame loss information.
As to the load identification module data transmission method applied to the management core module provided in the foregoing embodiment, an embodiment of the present invention further provides a load identification module data transmission apparatus, referring to another load identification module data transmission apparatus structure diagram shown in fig. 4, the apparatus includes the following components:
a second receiving module 410, configured to receive the configuration parameters sent by the metering core module;
a second determining module 420 for determining connection information of the load identifying module; the connection information is used for indicating that the load identification module is connected to the electric energy meter;
the reading module is used for reading a parameter information table of the load identification module based on the connection information and sending request information to the load identification module; wherein the parameter information table comprises a first type of the load identification module;
the second receiving module 410 is further configured to receive response information sent by the load identification module, where the response information includes a second type of the load identification module;
the second determining module 420 is further configured to determine whether the load identifying module is successfully configured according to the first type and the second type.
In some embodiments, the apparatus further comprises: and the sending module is used for sending the configuration parameters to the load identification module based on the first type of the load identification module when the load identification module is successfully configured.
In some embodiments, the apparatus further comprises: and the resetting module is used for reconfiguring the load identification module when the load identification module fails to be configured, and resetting the load identification module until the specified number of times of configuration fails.
The embodiment of the invention also provides a data transmission system of the load identification module, which comprises the load identification module and the management core module as well as the metering core module connected with the management core module. Referring to fig. 5, a schematic diagram of a load identification module data transmission system is shown.
Referring to fig. 6, this embodiment further provides a schematic structural diagram of a specific data transmission system of the load identification module. The management core module can comprise a metering core, and a dot matrix liquid crystal, a key, Bluetooth, a memory, an energy storage device, an uplink module, an embedded safety control module (ESAM) and the like which are connected with the metering core. The metering core module can comprise a metering core, a memory unit and a clock unit, wherein the memory unit and the clock unit are connected with the metering core, the clock unit can also be connected with an energy storage device and a battery, and the metering core can also be used for sending pulse signals. The load identification module and the management core can communicate through a universal asynchronous Receiver/Transmitter (UART); the load identification module and the metering core can be in one-way communication through the SPI serial peripheral interface.
The load identification module data transmission device provided by the embodiment of the application can be specific hardware on the equipment, or software or firmware installed on the equipment, and the like. The device provided by the embodiment of the present application has the same implementation principle and technical effect as the foregoing method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the foregoing method embodiments where no part of the device embodiments is mentioned.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the foregoing systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. The load identification module data transmission device provided by the embodiment of the application has the same technical characteristics as the load identification module data transmission method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be noted that: like reference numbers and letters indicate like items in the figures, and thus once an item is defined in a figure, it need not be further defined or explained in subsequent figures, and moreover, the terms "first," "second," "third," etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.
Claims (10)
1. A data transmission method for a load identification module is applied to the load identification module, and comprises the following steps:
receiving configuration parameters sent by a management core module; wherein the configuration parameters are sent by a metering core module to the management core module;
determining the communication connection between the load identification module and the metering core module according to the configuration parameters;
receiving a data frame sent by the metering core module based on the communication connection, and carrying out load identification processing on the data frame; the data frame comprises a frame sequence number, and the frame sequence number is used for determining frame loss information.
2. The method of claim 1, wherein the data frame further comprises a command symbol indicating a power meter type, the power meter type comprising single phase, three phase, and single phase zero line; the type of the electric energy meter is used for determining the transmission sequence of the sampling data; the sampled data includes voltage sampled values and current sampled values.
3. The method of claim 2, wherein the command symbol comprises a first command symbol, a second command symbol, and a third command symbol;
the first command symbol indicates that the type of the electric energy meter is single-phase, and the first transmission sequence of the sampling data is as follows: single-phase voltage sampling values and single-phase current sampling values;
the second command symbol indicates that the type of the electric energy meter is three-phase, and the second transmission sequence of the sampling data is as follows: three-phase voltage sampling values and three-phase current sampling values;
the third command symbol indicates that the type of the electric energy meter is a single-phase zero line, and the third transmission sequence of the sampling data is as follows: single-phase voltage sampling value, single-phase current sampling value and zero line current sampling value.
4. The method of claim 1, wherein the data frame further comprises: a data field and an accumulated sum;
the data field is used for storing sampling data, and the sampling data comprises a voltage sampling value and a current sampling value;
the accumulated sum is used for checking the accuracy of the data frame transmission.
5. The method of claim 1, wherein the data frame further comprises: a start symbol, a length field, and an end symbol;
the start indicator is used for indicating the start of the data frame;
the length field is used for indicating the number of bytes of the data frame except for the start character and the end character;
the end indicator is used to indicate the end of the data frame.
6. A data transmission method of a load identification module is applied to a management core module, and comprises the following steps:
receiving configuration parameters sent by a metering core module;
determining connection information of a load identification module; the connection information is used for indicating that the load identification module is connected to the electric energy meter;
reading a parameter information table of the load identification module based on the connection information, and sending request information to the load identification module; wherein the parameter information table includes a first type of the load identification module;
receiving response information sent by the load identification module, wherein the response information comprises a second type of the load identification module;
and determining whether the load identification module is successfully configured according to the first type and the second type.
7. The method of claim 6, further comprising: when the load identification module is configured successfully, based on the first type of the load identification module, sending the configuration parameters to the load identification module; when the load identification module fails to be configured, the load identification module is reconfigured until a specified number of times of configuration fails, and the load identification module is reset.
8. A load identification module data transmission apparatus, the apparatus comprising:
the first receiving module is used for receiving the configuration parameters sent by the management core module; wherein the configuration parameters are sent by a metering core module to the management core module;
the first determination module is used for determining the communication connection between the load identification module and the metering core module according to the configuration parameters;
the load identification module is used for receiving the data frame sent by the metering core module based on the communication connection and carrying out load identification processing on the data frame; the data frame comprises a frame sequence number, and the frame sequence number is used for determining frame loss information.
9. A load identification module data transmission apparatus, the apparatus comprising:
the second receiving module is used for receiving the configuration parameters sent by the metering core module;
the second determining module is used for determining the connection information of the load identification module; the connection information is used for indicating that the load identification module is connected to the electric energy meter;
the reading module is used for reading a parameter information table of the load identification module based on the connection information and sending request information to the load identification module; wherein the parameter information table includes a first type of the load identification module;
the second receiving module is further configured to receive response information sent by the load identification module, where the response information includes a second type of the load identification module;
and the second determining module is further used for determining whether the load identification module is successfully configured according to the first type and the second type.
10. A load identification module data transmission system comprising a load identification module according to any one of claims 1 to 5 and a management core module according to any one of claims 6 to 7, and a metering core module connected to the management core module.
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