CN113364732A - Vehicle-mounted terminal communication protocol analysis method and device - Google Patents
Vehicle-mounted terminal communication protocol analysis method and device Download PDFInfo
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- CN113364732A CN113364732A CN202110440316.2A CN202110440316A CN113364732A CN 113364732 A CN113364732 A CN 113364732A CN 202110440316 A CN202110440316 A CN 202110440316A CN 113364732 A CN113364732 A CN 113364732A
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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
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
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Abstract
The invention relates to a vehicle-mounted terminal communication protocol analysis method and a device, wherein the method comprises the following steps: constructing a protocol configuration database of various vehicle-mounted terminal communication protocols; the protocol configuration database comprises an identification bit, a field name, a storage position of data corresponding to each field, an occupied space and an analysis mode of each vehicle-mounted terminal communication protocol; matching a data header of data to be analyzed with an identification bit of a protocol configuration database; and analyzing the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis mode of the corresponding field thereof. The invention analyzes the data into the result which is easy to read manually according to the protocol, improves the checking speed and avoids errors; the analysis mode of the terminal-mounted communication protocol can be added or modified to the protocol configuration database according to actual requirements, and the universality is good.
Description
Technical Field
The invention belongs to the technical field of automobile terminal communication, and particularly relates to a vehicle-mounted terminal communication protocol analysis method and device.
Background
The Internet of vehicles system comprises four parts, namely a host, a vehicle-mounted terminal (hereinafter referred to as T-box), a mobile phone APP and a background system. The T-box is mainly used for communicating with a background system/mobile phone APP, and the supervision and control of a national relevant platform or an automobile manufacturer on the vehicle are achieved.
In the T-box work, the national platform or the automobile manufacturer platform is required to interact data, and different functions have different protocol formats and are transmitted in a 16-system mode. Whether the data in the development and test process is correct or not needs to be read, the protocols are various, the formats are complex, the manual checking efficiency is extremely low, and errors are easy to occur.
Disclosure of Invention
In order to solve the problems of difficult data analysis, low efficiency and easy error of various vehicle-mounted terminal communication protocols, the invention provides a vehicle-mounted terminal communication protocol analysis method in a first aspect, which comprises the following steps: constructing a protocol configuration database of various vehicle-mounted terminal communication protocols; the protocol configuration database comprises an identification bit, a field name, a storage position of data corresponding to each field, an occupied space and an analysis mode of each vehicle-mounted terminal communication protocol; matching a data header of data to be analyzed with an identification bit of a protocol configuration database; and analyzing the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis mode of the corresponding field thereof.
In some embodiments of the present invention, the parsing manner of the data corresponding to each field includes: and each field corresponds to the coding mode, the calculation formula, the value interval and the unit of the data.
Further, the analyzing the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis mode of the corresponding field thereof includes:
extracting data to be analyzed according to the storage position and the occupied space of the data corresponding to each field;
converting the extracted data to be analyzed according to the coding mode of the data corresponding to each field;
and determining the output mode according to the format of the converted data.
Further, the step of determining the output mode according to the format of the converted data includes the following steps:
determining the output mode according to whether the converted data is in a decimal format:
if yes, then: determining an output mode according to whether the converted data is represented as a word description;
if not, then: the field name and value are directly output.
Further, the step of determining the output mode according to whether the converted data is represented as a word description comprises the following steps:
if yes, then: searching a corresponding word description from a protocol configuration database, and outputting a field name and the word description;
if not, then: judging the value range of the converted data according to a calculation formula, and then adding units corresponding to the fields; and outputting the field name and the value of the converted data according to the value range and the unit corresponding to the field.
In the above embodiment, before matching the header of the data to be parsed with the identification bits of the protocol configuration database, the method further includes: and removing invalid characters of the data to be analyzed or performing escape processing.
In a second aspect of the present invention, a vehicle-mounted terminal communication protocol parsing apparatus includes a building module, a matching module and a parsing module, where the building module is configured to build a protocol configuration database of multiple vehicle-mounted terminal communication protocols; the protocol configuration database comprises an identification bit, a field name, a storage position of data corresponding to each field, an occupied space and an analysis mode of each vehicle-mounted terminal communication protocol; the matching module is used for matching a data header of the data to be analyzed with an identification bit of the protocol configuration database; and the analysis module is used for analyzing the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis mode of the corresponding field thereof.
Furthermore, the analysis module comprises an extraction unit, a conversion unit and a determination unit, wherein the extraction unit is used for extracting the data to be analyzed according to the storage position and the occupied space of the data corresponding to each field; the conversion unit is used for converting the extracted data to be analyzed according to the coding mode of the data corresponding to each field; and the determining unit is used for determining the output mode of the converted data according to the format of the converted data.
In a third aspect of the present invention, there is provided an electronic device comprising: one or more processors; storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to carry out the method provided by the first aspect of the invention.
In a fourth aspect of the invention, a computer-readable medium is provided, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the method provided in the first aspect of the invention.
The invention has the beneficial effects that:
1. according to the invention, the data is analyzed into the result which is easy to read manually according to the communication protocol of the vehicle-mounted terminal, so that the checking speed of the data acquired by the vehicle-mounted terminal is increased, and errors are avoided;
2. the method has expandability and good universality. The invention records various elements necessary for data analysis in a database or data table mode, and can add or modify the protocol configuration database according to actual requirements, thereby having good universality.
3. Different analysis conditions are set for different coding formats and different types of data to be distinguished, so that the analysis is more accurate, the corresponding range and unit are increased, and the readability is good.
Drawings
Fig. 1 is a basic flowchart of a vehicle terminal communication protocol parsing method according to some embodiments of the present invention;
FIG. 2 is a diagram of a parsing tool interface utilizing a vehicle terminal communication protocol parsing method in some embodiments of the invention;
FIG. 3 is a protocol configuration representation intent in some embodiments of the invention;
FIG. 4 is a textual description resolution table in some embodiments of the invention;
fig. 5 is a detailed flowchart of a method for analyzing a communication protocol of a vehicle-mounted terminal according to some embodiments of the present invention;
fig. 6 is a schematic structural diagram of a vehicle terminal communication protocol parsing system according to some embodiments of the present invention;
fig. 7 is a schematic structural diagram of an electronic device in some embodiments of the invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 and fig. 2, the present invention provides a method for analyzing a communication protocol of a vehicle-mounted terminal, including: s100, constructing protocol configuration databases of various vehicle-mounted terminal communication protocols; the protocol configuration database comprises an identification bit, a field name, a storage position of data corresponding to each field, an occupied space and an analysis mode of each vehicle-mounted terminal communication protocol; s200, matching a data header of data to be analyzed with an identification bit of a protocol configuration database; and S300, analyzing the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis mode of the corresponding field thereof.
Referring to fig. 2, schematically, the text box on the left of the parsing tool is the raw data received or sent by TBOX, which is hexadecimal data composed of many pieces of information combined according to a prescribed protocol format. For example, if the current water temperature needs to be known, the 55 th byte from left to right is needed to obtain '7A', and the water temperature is calculated to be '82' DEG C according to a protocol. The data size is large, the bytes are easy to be counted in error, or the calculation is wrong, and the efficiency is low. The original data is pasted into the text box at the left side of the analysis tool, and the legible result can be analyzed by clicking the 'confirm' button at the right side of the analysis tool. For example, the water temperature can be directly read in the right text box, and the efficiency is high.
Referring to fig. 3, in some embodiments of the present invention, a manner of parsing data corresponding to each field includes: and each field corresponds to the coding mode, the calculation formula, the value interval and the unit of the data.
Specifically, the protocol configuration database includes names of protocols, field names, byte numbers, parsing manners, table lookup ranges, formulas for calculation (including precision and offset), and units, maximum values and minimum values corresponding to data, which are specified by each protocol. For example, the commonly used fields include an identification bit, a message ID, a message body attribute, a terminal mobile phone number (SIM card number), and the like, and the corresponding storage spaces (number of bytes) are 1, 2, and 6, respectively. It should be noted that only a part of the protocol formats shown in the figures may be added or modified to the protocol configuration database shown in the figures according to different protocols.
In order to more accurately match the corresponding vehicle-mounted terminal communication protocol, in step S200 in some embodiments of the present invention, a data header of the data to be analyzed is matched with one or more data having a protocol identification function, such as an identification bit, a message ID, a message body attribute, and a protocol version of a protocol configuration database, so as to accurately determine the vehicle-mounted terminal communication protocol used by the data to be protocol.
The invention takes Excel table as an example, and shows different protocol names or numbers at the bottom of the workbook, such as: 7ED004, 7ED006, etc.; optionally, the protocol configuration database may further store the fields in the above form and data related to the corresponding parsing method in a database with other data formats, such as DB, MDB, SQL, XML, Jason/Json, YML, and the like.
Referring to fig. 4 and 5, in S300 in some embodiments of the present invention, the analyzing the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis manner of the corresponding field thereof includes:
s301, extracting data to be analyzed according to the storage position and occupied space of the data corresponding to each field;
s302, converting the extracted data to be analyzed according to the coding mode of the data corresponding to each field;
and S303, determining an output mode according to the format of the converted data.
Specifically, each field is extracted according to the number of bytes given in the protocol, and is converted according to the corresponding coding mode (decimal, hexadecimal, BCD code, character, etc.). If the coded decimal code is not decimal code, the calculation is not needed, and the analysis result is directly output, otherwise, the processing is continued.
Further, in order to more accurately parse the data, in step S303, the determining an output mode according to the format of the converted data includes the following steps:
determining the output mode according to whether the converted data is in a decimal format:
if yes, then: determining an output mode according to whether the converted data is represented as a word description;
if not, then: the field name and value are directly output.
Further, the step of determining the output mode according to whether the converted data is represented as a word description comprises the following steps:
if yes, then: searching a corresponding word description from a protocol configuration database, and outputting a field name and the word description; if not, then: judging the value range of the converted data according to a calculation formula, and then adding units corresponding to the fields; and outputting the field name and the value of the converted data according to the value range and the unit corresponding to the field.
In the foregoing embodiment, before matching the header of the data to be parsed with the identification bit of the protocol configuration database, the method further includes: and removing invalid characters of the data to be analyzed or performing escape processing.
Specifically, fig. 5 is a detailed flowchart showing the parsing process. First, the space, carriage return, or other non-hexadecimal invalid characters in the original data are removed, and for the data at the beginning of "7E", the data of "7D 01" and "7D 02" should also be transferred. And sequentially comparing the intercepted data head with the data head in the configuration table until a matched protocol format is found, otherwise, adding a new protocol.
It can be understood that the above illustration uses "7E" to represent the identification bit data of the data header, and the occupied space is 1 byte; but the identification bit data should not be limited to the above-mentioned positions and occupied spaces.
Then, each field is extracted according to the number of bytes given in the protocol, and is converted according to the corresponding coding mode (decimal, hexadecimal, BCD code, character, etc.). If the coded decimal code is not decimal code, the calculation is not needed, and the analysis result is directly output, otherwise, the processing is continued. If the decimal system needs to be corresponding to the caption, the corresponding caption is searched in a resolution table (see figure 4), otherwise, the data is calculated according to a formula. The calculated data has range limitation, invalid data is prompted after the calculated data exceeds the range, and the data in the range is added with the corresponding units and then output. And the process is circulated until all the fields are analyzed.
Example 2
In a second aspect of the present invention, a vehicle-mounted terminal communication protocol analysis device 1 includes a construction module 11, a matching module 12 and an analysis module 13, where the construction module 11 is configured to construct a protocol configuration database of multiple vehicle-mounted terminal communication protocols; the protocol configuration database comprises an identification bit, a field name, a storage position of data corresponding to each field, an occupied space and an analysis mode of each vehicle-mounted terminal communication protocol; the matching module 12 is configured to match a data header of the data to be analyzed with an identification bit of the protocol configuration database; and the analysis module 13 is configured to analyze the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis mode of the corresponding field thereof.
Further, the parsing module 13 includes an extracting unit, a converting unit, and a determining unit, where the extracting unit is configured to extract data to be parsed according to a storage location and an occupied space of data corresponding to each field; the conversion unit is used for converting the extracted data to be analyzed according to the coding mode of the data corresponding to each field; and the determining unit is used for determining the output mode of the converted data according to the format of the converted data.
Example 3
Referring to fig. 6, in a third aspect of the present invention, there is provided an electronic apparatus comprising: one or more processors; storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to carry out the method provided by the first aspect of the invention.
Referring to fig. 7, an electronic device 500 may include a processing means (e.g., central processing unit, graphics processor, etc.) 501 that may perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)502 or a program loaded from a storage means 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for the operation of the electronic apparatus 500 are also stored. The processing device 501, the ROM502, and the RAM 503 are connected to each other through a bus 504. An input/output (I/O) interface 505 is also connected to bus 504.
The following devices may be connected to the I/O interface 505 in general: input devices 506 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; output devices 507 including, for example, a Liquid Crystal Display (LCD), speakers, vibrators, and the like; a storage device 508 including, for example, a hard disk; and a communication device 509. The communication means 509 may allow the electronic device 500 to communicate with other devices wirelessly or by wire to exchange data. While fig. 7 illustrates an electronic device 500 having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided. Each block shown in fig. 7 may represent one device or may represent multiple devices as desired.
In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication means 509, or installed from the storage means 508, or installed from the ROM 502. The computer program, when executed by the processing device 501, performs the above-described functions defined in the methods of embodiments of the present disclosure. It should be noted that the computer readable medium described in the embodiments of the present disclosure may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In embodiments of the disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In embodiments of the present disclosure, however, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device. The computer readable medium carries one or more computer programs which, when executed by the electronic device, cause the electronic device to:
computer program code for carrying out operations for embodiments of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, Python, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A vehicle-mounted terminal communication protocol analysis method is characterized by comprising the following steps:
constructing a protocol configuration database of various vehicle-mounted terminal communication protocols; the protocol configuration database comprises an identification bit, a field name, a storage position of data corresponding to each field, an occupied space and an analysis mode of each vehicle-mounted terminal communication protocol;
matching a data header of data to be analyzed with an identification bit of a protocol configuration database;
and analyzing the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis mode of the corresponding field thereof.
2. The method for analyzing the communication protocol of the vehicle-mounted terminal according to claim 1, wherein the analyzing mode of the data corresponding to each field comprises:
and each field corresponds to the coding mode, the calculation formula, the value interval and the unit of the data.
3. The method for analyzing the vehicle-mounted terminal communication protocol according to claim 2, wherein the analyzing the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis mode of the corresponding field thereof comprises:
extracting data to be analyzed according to the storage position and the occupied space of the data corresponding to each field;
converting the extracted data to be analyzed according to the coding mode of the data corresponding to each field;
and determining the output mode according to the format of the converted data.
4. The in-vehicle terminal communication protocol parsing method according to claim 3, wherein the determining of the output mode according to the format of the converted data comprises the steps of:
determining the output mode according to whether the converted data is in a decimal format:
if yes, then: determining an output mode according to whether the converted data is represented as a word description;
if not, then: the field name and value are directly output.
5. The method for analyzing the communication protocol of the vehicle-mounted terminal according to claim 4, wherein the step of determining the output mode according to whether the converted data is expressed as a word description comprises the steps of:
if yes, then: searching a corresponding word description from a protocol configuration database, and outputting a field name and the word description;
if not, then: judging the value range of the converted data according to a calculation formula, and then adding units corresponding to the fields; and outputting the field name and the value of the converted data according to the value range and the unit corresponding to the field.
6. The vehicle-mounted terminal communication protocol parsing method according to claim 1 or 2, further comprising, before matching a header of data to be parsed with an identification bit of a protocol configuration database: and removing invalid characters of the data to be analyzed or performing escape processing.
7. A vehicle-mounted terminal communication protocol analysis device is characterized by comprising a construction module, a matching module and an analysis module,
the building module is used for building a protocol configuration database of various vehicle-mounted terminal communication protocols; the protocol configuration database comprises an identification bit, a field name, a storage position of data corresponding to each field, an occupied space and an analysis mode of each vehicle-mounted terminal communication protocol;
the matching module is used for matching a data header of the data to be analyzed with an identification bit of the protocol configuration database;
and the analysis module is used for analyzing the data to be analyzed according to the matched vehicle-mounted terminal communication protocol and the analysis mode of the corresponding field thereof.
8. The vehicular terminal communication protocol analyzing apparatus according to claim 7, wherein the analyzing module comprises an extracting unit, a converting unit, and a determining unit,
the extraction unit is used for extracting the data to be analyzed according to the storage position and the occupied space of the data corresponding to each field;
the conversion unit is used for converting the extracted data to be analyzed according to the coding mode of the data corresponding to each field;
and the determining unit is used for determining the output mode of the converted data according to the format of the converted data.
9. An electronic device, comprising: one or more processors; a storage device, configured to store one or more programs, which when executed by the one or more processors, cause the one or more processors to implement the in-vehicle terminal communication protocol parsing method according to any one of claims 1 to 5.
10. A computer-readable medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the in-vehicle terminal communication protocol parsing method according to any one of claims 1 to 5.
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| CN114475631A (en) * | 2022-02-22 | 2022-05-13 | 阿波罗智能技术(北京)有限公司 | Driving data processing method, device, automatic driving vehicle medium and product |
| CN116033048A (en) * | 2023-03-31 | 2023-04-28 | 中汽数据(天津)有限公司 | Multi-protocol analysis method of Internet of things, electronic equipment and storage medium |
| CN116033048B (en) * | 2023-03-31 | 2024-04-09 | 中汽数据(天津)有限公司 | Multi-protocol analysis method of Internet of things, electronic equipment and storage medium |
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