CN111404902B - Method and device for realizing serial communication message matching based on database - Google Patents
Method and device for realizing serial communication message matching based on database Download PDFInfo
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Abstract
The invention provides a method for realizing serial communication message matching based on a database in order to solve the problems in the prior art, which is characterized in that a protocol is divided into 9 different protocol blocks, a one-to-one correspondence relationship between the database and the protocol blocks in a message is established in the database according to the protocol blocks, the attribute division of the data blocks in the protocol blocks is further limited, the message composition and the parsing rule are defined, and the data in the data blocks of the reply message after the frame is deframed is acquired according to the attribute information of the parameter values of the data blocks in the message and the requirement of the message parsing rule Technical difficulty of new specifications.
Description
Technical Field
The invention relates to the field of communication messages, in particular to a method and a device for realizing serial communication message matching based on a database.
Background
In some large-scale systems, the monitoring host needs to access multiple types of MCU devices and multiple communication protocols (a series of conventions that both parties should comply with in order to ensure that both parties of communication in the data communication system can communicate effectively and reliably), and the customized regulations of each manufacturer bring inconvenience to development and maintenance of the monitoring host. Repeated development work (the MCU device library and the protocol library need to be continuously expanded) will consume a lot of effort of the monitoring system maintenance personnel.
At present, each manufacturer generally adopts a mode of assigning a specially-assigned person to modify protocol codes, but the mode can occupy a great deal of energy of developers; frequently modifying system codes, affecting system stability and affecting overall work efficiency of a team.
In another mode, the corresponding relation between the message and the protocol is stored in a database, which is convenient for message analysis and framing, but the framing and the analysis of the message in this mode have a section of code corresponding to a section of message, which is not beneficial to the processing efficiency of multiple protocols and has high difficulty in later maintenance.
Disclosure of Invention
The invention aims to solve the problems in the prior art, innovatively provides a method and a device for realizing serial communication message matching based on a database, effectively solves the problem of low processing efficiency caused by the existing communication messages, effectively improves the stability of a system, and facilitates later maintenance work.
The first aspect of the present invention provides a method for implementing serial communication packet matching based on a database, including:
dividing the protocol in the message into protocol blocks, and establishing a one-to-one correspondence relationship between a database and the protocol blocks in the message, wherein the protocol blocks comprise data blocks;
loading a database, reading parameter values of serial port attributes, and configuring a serial port;
loading the protocol blocks, reading parameter values of the protocol blocks, and determining attribute information of the parameter values of different protocol blocks in the message;
according to the attribute information of the parameter value of the protocol block in the message and the requirement of the message composition rule, framing operation of the query message is carried out, and the query message is issued to a lower computer;
after receiving a reply message returned by the lower computer, performing a deframing operation of the reply message according to the attribute information of the parameter value of the protocol block in the message and the requirement of a message analysis rule;
and acquiring data in the data block of the reply message after the frame is unframed according to the attribute information of the parameter value of the data block in the message and the requirement of the message analysis rule.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the dividing a protocol in a packet into protocol blocks, and establishing a one-to-one correspondence between a database and the protocol blocks in the packet specifically includes: according to the common characteristics of the accessed protocols, the protocols are divided into protocol blocks, and the protocol blocks comprise: header file, data length, device type, device address, message function code, data quantity, data block, check code and end code; HeadData in the database corresponds to a header file, DataLen in the database corresponds to a data length, DevType in the database corresponds to a device type, DevAdeass in the database corresponds to a device address, DataCid in the database corresponds to a message function code, DataNum in the database corresponds to a data amount, DataBlock in the database corresponds to a data block, DataCheck in the database corresponds to a check code, and EndData in the database corresponds to an end code.
With reference to the first aspect, in a second possible implementation manner of the first aspect, the parameter values of the data block include a data type, a data coefficient, a data OFFSET, a device ID, a communication packet ID, and a data serial number, where the data type corresponds to a Datatype in the database, the data coefficient corresponds to Radio in the database, the data OFFSET corresponds to OFFSET in the database, the device ID corresponds to a DevID in the database, the communication packet ID corresponds to a comdataid in the database, and the data serial number corresponds to a DataNo in the database.
With reference to the first aspect, in a third possible implementation manner of the first aspect, the parameter values of the serial port attribute include a serial port number, a baud rate, a check mode, a data bit number, and a stop bit, where the serial port number corresponds to the Name in the database, the baud rate corresponds to the Baudate in the database, the check mode corresponds to the part in the database, the data bit number corresponds to the DataBits, and the stop bit corresponds to the StopBits in the database.
With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the attribute information includes location information, length information, and quantity information.
With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the requirement of the packet composition rule includes: the method comprises the following steps of message function code, device ID, data initial address, refreshing frequency, data digit, data quantity and communication frame name, wherein the message analysis rule requirements comprise: message function code, device ID, data start address, refresh frequency, data digit, data quantity and communication frame name; the message function code corresponds to a DataCID in the database, the device ID corresponds to a DevID in the database, the data start address corresponds to a Dataaddr in the database, the Refresh frequency corresponds to a Refresh _ rate in the database, the data bit number corresponds to BitNum in the database, the data number corresponds to a DataNUM in the database, and the communication frame Name corresponds to a Name in the database.
With reference to the first aspect, in a sixth possible implementation manner of the first aspect, a one-to-one correspondence relationship between a database and a protocol block in a message, attribute information of a parameter value of the protocol block in the message, a message composition rule requirement, and a message parsing rule requirement are all preset in the database.
The second aspect of the present invention provides a device for implementing serial communication packet matching based on a database, including:
the division establishing module is used for dividing the protocol in the message into protocol blocks and establishing a one-to-one correspondence relationship between the database and the protocol blocks in the message, wherein the protocol blocks comprise data blocks;
the first loading module loads a database, reads parameter values of serial port attributes and performs serial port configuration;
the second loading module is used for loading the protocol blocks, reading parameter values of the protocol blocks and determining attribute information of the parameter values of different protocol blocks in the message;
the framing module is used for performing framing operation on the query message according to the attribute information of the parameter value of the protocol block in the message and the requirement of the message composition rule, and transmitting the query message to a lower computer;
the frame decoding module is used for decoding the reply message according to the attribute information of the parameter value of the protocol block in the message and the message analysis rule requirement after receiving the reply message returned by the lower computer;
and the data acquisition module acquires the data in the data block of the reply message after the de-framing according to the attribute information of the parameter value of the data block in the message and the message analysis rule requirement.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the one-to-one correspondence between the database and the protocol block in the message, the attribute information of the parameter value of the protocol block in the message, the message composition rule requirement, and the message parsing rule requirement are all preset in the database.
The technical scheme adopted by the invention comprises the following technical effects:
1. the invention effectively solves the problem of low processing efficiency caused by the existing communication message, effectively improves the stability of the system and is convenient for later maintenance work.
2. The invention can realize the requirement of maintaining the system support protocol only by maintaining the database, thereby greatly reducing the technical difficulty of accessing the system to a new device and a new protocol.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the embodiments or technical solutions in the prior art are briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow diagram of a process according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a protocol block division table in a method according to an embodiment of the present invention;
FIG. 3 is a table diagram illustrating partitioning of data blocks according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a serial port attribute division table in a method according to an embodiment of the present invention;
fig. 5 is a table diagram illustrating a message composition rule and a message parsing rule in a method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second apparatus according to an embodiment of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
Example one
As shown in fig. 1, the present invention provides a method for implementing serial communication packet matching based on a database, which includes:
s1, dividing the protocol in the message into protocol blocks, and establishing a one-to-one correspondence relationship between the database and the protocol blocks in the message, wherein the protocol blocks comprise data blocks;
s2, loading a database, reading parameter values of serial port attributes, and performing serial port configuration;
s3, loading protocol blocks, reading parameter values of the protocol blocks, and determining attribute information of the parameter values of different protocol blocks in the message;
s4, framing operation of the query message is carried out according to the attribute information of the parameter value of the protocol block in the message and the requirement of the message composition rule, and the query message is issued to a lower computer;
s5, after receiving the reply message returned by the lower computer, performing the deframing operation of the reply message according to the attribute information of the parameter value of the protocol block in the message and the message analysis rule requirement;
and S6, acquiring the data in the data block of the reply message after the frame is decoded according to the attribute information of the parameter value of the data block in the message and the requirement of the message analysis rule.
In step S1, the protocol in the message is divided into protocol blocks, and the establishment of the one-to-one correspondence between the database and the protocol blocks in the message is specifically: according to the common characteristics of the accessed protocols, the protocols are divided into 9 protocol blocks, and the 9 protocol blocks are respectively as follows: header file, data length, device type, device address, message function code, data quantity, data block, check code and end code; the HeadData in the database corresponds to a header file, the DataLen in the database corresponds to a data length, the DevType in the database corresponds to a device type, the devadeas in the database corresponds to a device address, the DataCid in the database corresponds to a message function code, the DataNum in the database corresponds to a data amount, the DataBlock in the database corresponds to a data block, the DataCheck in the database corresponds to a check code, and the EndData in the database corresponds to an end code. The settings are made in the database DataClass as shown in fig. 2.
Further, in steps S1-S5, the parameter values of the data block are divided according to the data attributes, and specifically include a data type, a data coefficient, a data OFFSET, a device ID, a communication packet ID, and a data serial number, where the data type corresponds to a Datatype in the database, the data coefficient corresponds to Radio in the database, the data OFFSET corresponds to OFFSET in the database, the device ID corresponds to a DevID in the database, the communication packet ID corresponds to a comdataid in the database, and the data serial number corresponds to a DataNo in the database. The setup is performed in the BlockClass of the database, as shown in fig. 3.
Further, parameter values of the serial port attribute are divided according to the serial port attribute, and specifically include a serial port number, a baud rate, a check mode, a data bit number and a stop bit, wherein the serial port number corresponds to the Name in the database, the baud rate corresponds to the Baudate in the database, the check mode corresponds to the part in the database, the data bit number corresponds to the DataBits, and the stop bit corresponds to the StopBits in the database. The setup is done in CommSpeerialPortClass in the database, as shown in FIG. 4.
The attribute information may specifically include position information, length information, and quantity information; the lower tool body may be a plurality of MCU (micro controller) devices accessed.
The message composition rule requirements include: the method comprises the following steps of message function code, device ID, data initial address, refreshing frequency, data digit, data quantity and communication frame name, wherein the message analysis rule requirements comprise: message function code, device ID, data start address, refresh frequency, data digit, data quantity and communication frame name; the message function code corresponds to a DataCID in the database, the device ID corresponds to a DevID in the database, the data start address corresponds to a Dataaddr in the database, the Refresh frequency corresponds to a Refresh _ rate in the database, the data bit number corresponds to BitNum in the database, the data number corresponds to a DataNUM in the database, and the communication frame Name corresponds to a Name in the database. The setup is performed in CommDataClass of the database, as shown in FIG. 5.
The one-to-one correspondence relationship between the database and the protocol blocks in the message, the attribute information of the parameter values of the protocol blocks in the message, the message composition rule requirement and the message analysis rule requirement are all preset in the database.
When serial communication message reading is required to be continuously performed, the serial communication message reading method can be circularly operated according to the sequence of the steps S4-S6.
When a new protocol is accessed, the protocol is divided into 9 different protocol blocks according to the newly accessed protocol and the existing protocol blocks, the steps S1-S5 are performed according to the invention, the steps S1-S5 can be realized through program scripts, message composition and analysis rules are defined in a database, the requirement of maintaining the system to support the protocol can be realized only through maintaining the database, and the technical difficulty of accessing the system to the new device and the new protocol is greatly reduced.
The invention effectively solves the problem of low processing efficiency caused by the existing communication message, effectively improves the stability of the system and is convenient for later maintenance work.
Example two
As shown in fig. 6, the technical solution of the present invention further provides a device for implementing serial communication packet matching based on a database, including:
the division establishing module 101 is used for dividing the protocol in the message into protocol blocks and establishing a one-to-one correspondence relationship between the database and the protocol blocks in the message, wherein the protocol blocks comprise data blocks;
the first loading module 102 loads a database, reads parameter values of serial port attributes, and performs serial port configuration;
the second loading module 103 loads the protocol blocks, reads parameter values of the protocol blocks, and determines attribute information of the parameter values of different protocol blocks in the message;
the framing module 104 performs framing operation on the query message according to the attribute information of the parameter value of the protocol block in the message and the requirement of the message composition rule, and issues the query message to a lower computer;
the frame decoding module 105, after receiving the reply message returned by the lower computer, performs frame decoding operation on the reply message according to the attribute information of the parameter value of the protocol block in the message and the message analysis rule requirement;
the data obtaining module 106 obtains data in the data block of the deframed reply message according to the attribute information of the parameter value of the data block in the message and the message parsing rule requirement.
The one-to-one correspondence relationship between the database and the protocol blocks in the message, the attribute information of the parameter values of the protocol blocks in the message, the message composition rule requirement and the message analysis rule requirement are all preset in the database.
The invention effectively solves the problem of low processing efficiency caused by the existing communication message, effectively improves the stability of the system and is convenient for later maintenance work.
The invention can realize the requirement of maintaining the system support protocol only by maintaining the database, thereby greatly reducing the technical difficulty of accessing the system to a new device and a new protocol.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (9)
1. A method for realizing serial communication message matching based on a database is characterized by comprising the following steps:
dividing the protocol in the message into protocol blocks, and establishing a one-to-one correspondence relationship between a database and the protocol blocks in the message, wherein the protocol blocks comprise data blocks;
loading a database, reading parameter values of serial port attributes, and configuring a serial port;
loading the protocol blocks, reading parameter values of the protocol blocks, and determining attribute information of the parameter values of different protocol blocks in the message;
according to the attribute information of the parameter value of the protocol block in the message and the requirement of the message composition rule, framing operation of the query message is carried out, and the query message is issued to a lower computer;
after receiving a reply message returned by the lower computer, performing a deframing operation of the reply message according to the attribute information of the parameter value of the protocol block in the message and the requirement of a message analysis rule;
and acquiring data in the data block of the reply message after the frame is unframed according to the attribute information of the parameter value of the data block in the message and the requirement of the message analysis rule.
2. The method for matching serial communication packets based on the database according to claim 1, wherein the protocol in the packet is divided into protocol blocks, and the establishing of the one-to-one correspondence relationship between the database and the protocol blocks in the packet is specifically: according to the common characteristics of the accessed protocols, the protocols are divided into protocol blocks, and the protocol blocks comprise: header file, data length, device type, device address, message function code, data quantity, data block, check code and end code; the HeadData in the database corresponds to a header file, the DataLen in the database corresponds to a data length, the DevType in the database corresponds to a device type, the devadeas in the database corresponds to a device address, the DataCid in the database corresponds to a message function code, the DataNum in the database corresponds to a data amount, the DataBlock in the database corresponds to a data block, the DataCheck in the database corresponds to a check code, and the EndData in the database corresponds to an end code.
3. The method as claimed in claim 1 or 2, wherein the parameter values of the data block include a data type, a data coefficient, a data OFFSET, a device ID, a communication packet ID, and a data serial number, the data type corresponds to Datatype in the database, the data coefficient corresponds to Radio in the database, the data OFFSET corresponds to OFFSET in the database, the device ID corresponds to DevID in the database, the communication packet ID corresponds to CommDataID in the database, and the data serial number corresponds to DataNo in the database.
4. The method of claim 1, wherein the parameter values of the serial port attribute include a serial port number, a baud rate, a check mode, a data bit number, and a stop bit, the serial port number corresponds to a Name in the database, the baud rate corresponds to a Baudate in the database, the check mode corresponds to a Parity in the database, the data bit number corresponds to a DataBits, and the stop bit corresponds to a StopBits in the database.
5. The database-based method for matching serial communication packets according to claim 1, wherein the attribute information includes location information, length information, and quantity information.
6. The database-based method for matching serial communication packets according to claim 1, wherein the packet composition rule requirements include: the method comprises the following steps of message function code, device ID, data initial address, refreshing frequency, data digit, data quantity and communication frame name, wherein the message analysis rule requirements comprise: message function code, device ID, data start address, refresh frequency, data digit, data quantity and communication frame name; the message function code corresponds to a DataCID in the database, the device ID corresponds to a DevID in the database, the data start address corresponds to a Dataaddr in the database, the Refresh frequency corresponds to a Refresh _ rate in the database, the data bit number corresponds to BitNum in the database, the data number corresponds to a DataNUM in the database, and the communication frame Name corresponds to a Name in the database.
7. The method for matching serial communication packets based on the database as claimed in claim 1, wherein the one-to-one correspondence between the database and the protocol blocks in the packet, the attribute information of the parameter values of the protocol blocks in the packet, the packet composition rule requirement, and the packet parsing rule requirement are preset in the database.
8. A device for realizing serial communication message matching based on a database is characterized by comprising:
the division establishing module is used for dividing the protocol in the message into protocol blocks and establishing a one-to-one correspondence relationship between the database and the protocol blocks in the message, wherein the protocol blocks comprise data blocks;
the first loading module loads a database, reads parameter values of serial port attributes and performs serial port configuration;
the second loading module is used for loading the protocol blocks, reading parameter values of the protocol blocks and determining attribute information of the parameter values of different protocol blocks in the message;
the framing module is used for performing framing operation on the query message according to the attribute information of the parameter value of the protocol block in the message and the requirement of the message composition rule, and transmitting the query message to a lower computer;
the frame decoding module is used for decoding the reply message according to the attribute information of the parameter value of the protocol block in the message and the message analysis rule requirement after receiving the reply message returned by the lower computer;
and the data acquisition module acquires the data in the data block of the reply message after the de-framing according to the attribute information of the parameter value of the data block in the message and the message analysis rule requirement.
9. The apparatus according to claim 8, wherein the one-to-one correspondence relationship between the database and the protocol blocks in the message, the attribute information of the parameter values of the protocol blocks in the message, the message composition rule requirement, and the message parsing rule requirement are preset in the database.
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