CN107135210B - Automobile simulation communication protocol analyzer and analysis method thereof - Google Patents
Automobile simulation communication protocol analyzer and analysis method thereof Download PDFInfo
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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
- H04L69/03—Protocol definition or specification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
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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
- H04L69/02—Protocol performance
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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
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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Abstract
The invention discloses an automobile simulation communication protocol analyzer, which comprises an analyzing end, a diagnosis end and a diagnosis protocol interface, wherein the diagnosis end is used for comparing and judging a frame sequence format of a request diagnosis protocol sent by the analyzing end and a format of a protocol data source read by the diagnosis protocol interface, the diagnosis end returns the diagnosis test data to the analysis end for protocol analysis and visual display, the analysis end packages the data generated after the protocol analysis and sends the protocol frame sequence data to the diagnosis end, the analysis end sends a diagnosis protocol to the diagnosis end and judges whether the analysis end needs to carry out a protocol analysis request, the diagnosis end adds protocol identifiers to different functional modules of the analysis end, the diagnosis end reads special function identifiers of the different functional modules, and the identifiers are modified according to prompt information of the different functional modules. The automobile resolver can quickly collect the fault information of an automobile and generate a reply command, and greatly shortens the simulation time.
Description
Technical Field
The invention relates to the field of automobile electronic detection, in particular to an automobile simulation communication protocol analyzer and an analysis method thereof.
Background
Automobile diagnosis is an indispensable link in the automobile industry, XML (extensive makeup language) resource and program development modes are mainstream development modes set by system diagnostic instruments based on PC (personal computer) or android and the like at present, and with the continuous improvement of the holding capacity of automobiles, vehicle-mounted diagnostic instruments related to automobile test development are rapidly developed, so that the vehicle-mounted diagnostic system comprises: On-Board Diagnostic, abbreviated as: OBD ". The vehicle-mounted diagnostic device (OBD) can monitor the running state of the engine at any time, and can immediately send out a warning once a condition that the fault is possibly caused is found, so that the OBD becomes a necessary tool of a light automobile. Generally, an automobile is provided with an OBD interface for recording the running condition of an automobile engine and data of each time period of each processing system of the automobile engine, the OBD interface on the automobile is connected with an automobile fault diagnosis instrument to read the data, and then the OBD interface is connected with a computer through a data line to display the read data. In addition, engineers often need to connect the vehicle fault diagnosis instrument with the vehicle ECU simulator, the computer and the external power supply for use when testing and developing the vehicle fault, as shown in fig. 1, the most important workload in the development process of the vehicle diagnosis software is filling in XML resources, which are important components of the vehicle diagnosis software, and diagnostic software covering thousands of brands of vehicles can be formed by adding a small amount of interruption and processing program codes and different similar XML resources, however, filling in the XML resources is a time-consuming and troublesome work, the manual filling efficiency is too low, developers are easy to fatigue and make mistakes, meanwhile, various new manufacturers and new models of vehicles are continuously produced, the fault information of the vehicle ECU simulator contained in the diagnostic instrument will be more and more, and various new manufacturers and new models of vehicles will have incompatible situations, therefore, the storage space occupied by the fault diagnosis information is larger, more storage space of the diagnostic apparatus is wasted, and therefore, a protocol parser which is an auxiliary development tool and can automatically generate XML resources and automatically generate resources for simulating automobile ECU software is developed, the purpose of continuously expanding diagnosis and development objects is achieved, the time for filling the XML resources and the automobile ECU simulation resources in the automobile diagnosis and development process can be greatly shortened, and the efficiency and the accuracy are improved.
Disclosure of Invention
The invention aims to provide an automobile simulation communication protocol parser and a parsing method thereof, the time for filling XML resources and automobile ECU simulation resources in the automobile diagnosis and development process can be greatly shortened by the simulation communication protocol parser of the invention, the efficiency and the accuracy are improved, and in order to realize the aim, the invention adopts the following technical effects:
according to one aspect of the present invention, there is provided an automobile simulation communication protocol parser, characterized in that: the diagnosis end is used for comparing and judging the frame sequence format of a request diagnosis protocol sent by the analysis end and the format of a protocol data source read by the diagnosis protocol interface, then testing the comparison and judgment result and generating diagnosis test data, meanwhile, the diagnosis end returns the diagnosis test data to the analysis end for protocol analysis and visual display, and the analysis end packages the data generated after protocol analysis and sends the data to the diagnosis end as protocol frame sequence data.
Preferably, the parsing end comprises an XML generating module, a sending module, a protocol sorting module, a response processing module, a receiving module, a frame marking module and a clock module, the receiving module is used for receiving the diagnosis test data which is sent by the diagnosis end and requests for diagnosis, caching and preprocessing the diagnosis test data and sending the diagnosis test data to the response processing module, the response processing module is used for parsing and judging the received response frame according to the frame format, visually displaying the parsing result and sending the parsing result to the protocol sorting module for protocol checking, the protocol sorting module performs protocol checking on the parsing result to check whether the response frame is correct and outputs a protocol checking result, the XML generating module is used for testing the protocol checking result output by the protocol sorting module and the frame marking bit output by the frame marking module, judging whether each frame of data is correct, and judging the legality of each frame of data according to each frame marking bit, and the sending module packages the protocol data tested by the XML generating module and sends a protocol frame sequence to the diagnosis end according to the clock source timing generated by the clock module.
Preferably, the diagnostic protocol interface is an OBD communication interface protocol.
Preferably, the diagnosis end comprises a protocol storage module and an automobile ECU simulator which is in communication connection with the protocol storage module, and a physical layer of the protocol storage module realizes drive control with a receiving and transmitting port of the analysis end and a protocol interface of the automobile ECU simulator respectively.
According to another aspect of the present invention, there is provided a method for parsing an automobile simulation communication protocol parser, including the steps of:
the method comprises the following steps: the analysis end sends a diagnosis protocol to the diagnosis end, judges whether the analysis end needs to carry out a protocol analysis request or not, displays the analyzed protocol data result through a visual interface if the analysis end has the protocol analysis request, increases a protocol identifier of a protocol frame sequence through the visual interface, and then solves the protocol data according to the protocol identifier;
step two: the diagnostic end adds protocol identifiers to different functional modules of the analysis end, judges whether each analyzed functional module needs to add a special functional identifier and solves a protocol data file, if the special functional identifier is not added, the protocol identifier is directly carried out to solve the protocol data file, if the special functional identifier is added, a reading mode of the special functional identifier is set, and then the protocol data file is solved according to the special functional identifier;
step three: reading special function identifiers of different function modules, modifying the identifiers according to prompt information of the different function modules, returning to the step two, otherwise, generating a universal markup language according to the analyzed structure and outputting an analyzed file;
preferably, the solving of the protocol data file in the second step includes:
b1, judging whether a matched protocol exists between the protocol data file received by the analysis end and the protocol characteristics preset by a protocol storage module in the diagnosis end, wherein the protocol storage module comprises a plurality of protocol data standard texts;
b2, if a matched protocol exists, carrying out protocol analysis according to the protocol specification text corresponding to the preset protocol characteristics; otherwise, running a script according to the protocol standard text provided by the analysis end and automatically generating an XML resource, and storing the generated XML resource into the protocol storage module.
Preferably, the XML resource includes a name of a data stream, a protocol conversion calculation formula, a data display mode, a display unit, and corresponding command data.
By adopting the technical scheme, the invention has the following technical effects:
(1) the automobile simulation communication protocol analyzer can quickly collect the fault information of an automobile, can automatically simulate the automobile ECU communication protocol command reply test, and automatically generates the simulated automobile ECU reply command, thereby greatly shortening the automobile ECU simulation time, improving the efficiency and accuracy of automobile diagnosis, and having good use value. The method can achieve the purpose of continuously expanding the diagnostic objects, greatly shorten the time for filling XML resources in the automobile diagnosis development process, improve the efficiency and accuracy, reduce the development cost and debugging cost, and shorten the development period.
(2) The automobile simulation communication protocol analyzer and the automobile ECU form an automobile communication simulation signal, so that the problem that communication diagnosis can be finished only by a large amount of wiring harnesses and connection between an extra diagnostic instrument and the automobile ECU is developed is solved, the use of the wiring harnesses is reduced, and the analysis and diagnosis test efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a prior art simulated vehicle fault diagnosis;
FIG. 2 is a schematic diagram of an automobile simulation protocol parser of the present invention;
FIG. 3 is a flow chart of a parsing method of the automobile simulation communication protocol parser according to the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
As shown in fig. 2, according to an aspect of the present invention, there is provided an automobile simulation communication protocol parser, comprising a parsing end, a diagnostic end and a diagnostic protocol interface, the diagnosis protocol interface is an OBD communication interface protocol, the diagnosis end is used for comparing and judging the frame sequence format of the request diagnosis protocol sent by the analysis end and the format of the protocol data source read by the diagnosis protocol interface, then testing the result of the comparison and judgment and generating diagnosis test data, the diagnosis end generates the result of the comparison and judgment into a data message and then tests the data message, and then generates the test result into diagnosis test data, the diagnosis end returns the diagnosis test data to the analysis end for protocol analysis and visual display, the analysis end packages the data generated after the protocol analysis and sends the packaged data to the diagnosis end as protocol frame sequence data.
In the present invention, as shown in fig. 2, the parsing end includes an XML generating module, a transmitting module, a protocol sorting module, a response processing module, a transmitting module, a frame marking module and a clock module, the receiving module is configured to receive the diagnostic test data that the diagnostic end sends out a request for diagnosis, perform caching and preprocessing, and send the diagnostic test data to the response processing module, the response processing module is configured to parse and judge the received response frame according to the frame format, visually display the parsed result, and send the parsed result to the protocol sorting module for protocol checking, the protocol sorting module performs protocol checking on the parsed result to check whether the response frame is correct and outputs a protocol checking result, the XML generating module is configured to test the protocol checking result output by the protocol sorting module and the frame marking bit output by the frame marking module, and judge whether each frame of data is correct, judging the legality of each frame of data according to each frame of flag bit, and packaging the protocol data tested by the XML generation module by the sending module and sending a protocol frame sequence to the diagnosis end according to the clock source timing generated by the clock module; the protocol arrangement module adds a special identifier in front of a frame flag bit of each frame sequence data or frame sequence data according to actual conditions to judge and judge whether each special function identifier is legal or not, wherein the special function identifier refers to reading a fault code, clearing the fault code, reading a data stream element test function and executing a special identifier test.
The diagnosis end comprises a protocol storage module and an automobile ECU simulator which is in communication connection with the protocol storage module, a physical layer of the protocol storage module realizes drive control with a receiving and transmitting port of the analysis end and a protocol interface of the automobile ECU simulator respectively, the physical layer is responsible for organizing protocol data into frames and finishing comparison and judgment of formats of protocol data sources, then testing results of the comparison and judgment and generating diagnosis test data, a network layer receives the diagnosis test data from the physical layer and analyzes a transmission path of corresponding protocol data information, and a data transmission layer transmits each piece of protocol data information to an application layer for storage after binding a frame mark bit. The transmitting module packs the protocol data tested by the XML generating module and transmits a protocol frame sequence to the diagnostic terminal at regular time according to a clock source generated by the clock module, the protocol data is organized and packed according to a protocol request and then transmitted from the highest layer of the protocol storage module to the lower layer, the protocol data is packed and packaged layer by layer through the application layer, the data transmission layer, the network layer and the physical layer respectively, and finally the protocol data reaches the physical layer to realize protocol request transmission. After the application layer data is encapsulated, the protocol data is transferred to the previous layer by each layer according to the specified frame, and when the application layer is reached, the final protocol data information is taken out, so that the physical layer, the network layer, the data transmission layer and the application layer are analyzed and analyzed layer by layer respectively, and the whole analysis process is also completed.
As shown in fig. 3, according to another aspect of the present invention, there is provided a parsing method of an automobile simulation communication protocol parser, including the steps of:
the method comprises the following steps: the analysis end sends a diagnosis protocol to the diagnosis end, judges whether the analysis end needs to carry out a protocol analysis request or not, displays the analyzed protocol data result through a visual interface if the analysis end has the protocol analysis request, increases a protocol identifier of a protocol frame sequence through the visual interface, and then solves the protocol data according to the protocol identifier;
step two: the diagnostic end adds protocol identifiers to different functional modules of the analysis end, judges whether each analyzed functional module needs to add a special functional identifier and solves a protocol data file, if the special functional identifier is not added, the protocol identifier is directly carried out to solve the protocol data file, if the special functional identifier is added, a reading mode of the special functional identifier is set, and then the protocol data file is solved according to the special functional identifier;
step three: the diagnostic end reads the special function identifiers of the different function modules, modifies the identifiers according to the prompt messages of the different function modules, and returns to the second step, otherwise, generates a universal markup language according to the analyzed structure and outputs an analyzed file;
in the present invention, the solving of the protocol data file in the second step includes:
b1, judging whether a matched protocol exists between a protocol data file received by the analysis end and a protocol feature preset by a protocol storage module in the diagnosis end, wherein the protocol storage module comprises a plurality of protocol data standard texts, including standard CAN protocol texts, extended CAN protocol texts, KWP2000 protocol texts and other protocol texts;
b2, if a matched protocol exists, carrying out protocol analysis according to the protocol specification text corresponding to the preset protocol characteristics; otherwise, running a script according to the protocol standard text provided by the analysis end and automatically generating an XML resource, and storing the generated XML resource into the protocol storage module, wherein the XML resource comprises the name of the data stream, a protocol conversion calculation formula, a data display mode, a display unit and corresponding command data.
The parser of the invention can convert the name of the data stream according to the XML format to generate corresponding command data, after the XML resource format is converted, the test module of the parser can execute the conversion result storage according to the file format, the storage mode is that the XML resource format is stored, because the command data is generated according to the format, so as to satisfy the OBD communication protocol interface to realize the reading of the external equipment, therefore, as long as the format of the target file is provided, the parser can generate the XML resource format according to the appointed communication protocol, in the process of protocol parsing, only the protocol needs to be arranged according to a certain format and the subsequent format requirement conversion work, the generated format is unified, the reliability of the protocol parsing code is high, the mass repetitive work can be reduced, and the work efficiency can be greatly improved, the protocol arrangement process is that a special identifier is added to a command of a data stream (each frame sequence data or frame sequence data), then a special mark is added to the name, current value, key byte, protocol conversion calculation formula, data display mode, display unit and corresponding command data, format arrangement is finished, an analyzer generates the command according to a specific format, then analyzes the name of the data stream, matches the special identifier with the corresponding name, then generates a corresponding command and an address of the key byte according to the key byte and the corresponding command corresponding to the data stream, sets a diagnosis end to send out diagnosis protocol data, judges whether the analysis end needs to analyze the protocol, and displays the analyzed protocol data through a visual interface.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (4)
1. An automobile simulation communication protocol analyzer is characterized in that: the protocol analyzer comprises an analysis end, a diagnosis end and a diagnosis protocol interface, wherein the diagnosis end is used for comparing and judging the frame sequence format of a request diagnosis protocol sent by the analysis end and the format of a protocol data source read by the diagnosis protocol interface, then testing the result of the comparison and judgment and generating diagnosis test data, the diagnosis end simultaneously returns the diagnosis test data to the analysis end for protocol analysis and visual display, and the analysis end packages the data generated after protocol analysis and sends the protocol frame sequence data to the diagnosis end; the analysis end comprises an XML generation module, a sending module, a protocol sorting module, a response processing module, a receiving module, a frame mark module and a clock module, wherein the receiving module is used for receiving diagnosis test data which is sent by the diagnosis end and requests for diagnosis, caching and preprocessing the diagnosis test data and sending the diagnosis test data to the response processing module, the response processing module is used for analyzing and judging the received response frame according to the frame format, visually displaying the analysis result and sending the analysis result to the protocol sorting module for protocol verification, the protocol sorting module performs protocol verification on the analysis result to verify whether the response frame is correct and outputs a protocol verification result, the XML generation module is used for testing the protocol verification result output by the protocol sorting module and the frame mark bit output by the frame mark module and judging whether each frame of data is correct and judging the legality of each frame of data according to each frame mark bit, the transmitting module packs the protocol data tested by the XML generating module and transmits a protocol frame sequence to the diagnostic terminal according to the clock source timing generated by the clock module; the protocol parser further comprises the steps of:
the method comprises the following steps: the analysis end sends a diagnosis protocol to the diagnosis end, judges whether the analysis end needs to carry out a protocol analysis request or not, displays the analyzed protocol data result through a visual interface if the analysis end has the protocol analysis request, increases a protocol identifier of a protocol frame sequence through the visual interface, and then solves the protocol data according to the protocol identifier;
step two: the diagnostic end adds protocol identifiers to different functional modules of the analysis end, judges whether each analyzed functional module needs to add a special functional identifier and solves a protocol data file, if the special functional identifier is not added, the protocol identifier is directly carried out to solve the protocol data file, if the special functional identifier is added, a reading mode of the special functional identifier is set, and then the protocol data file is solved according to the special functional identifier; the special function identifier is used for reading fault codes, clearing fault codes, reading data streams and testing components, and executing a special identifier test;
step three: the diagnostic end reads the special function identifiers of the different function modules, modifies the special function identifiers according to the prompt messages of the different function modules, and returns to the second step, otherwise, generates a universal mark language according to the analyzed structure and outputs an analyzed file;
the protocol data file solving in the second step comprises:
b1, judging whether a matched protocol exists between the protocol data file received by the analysis end and the protocol feature preset by the protocol storage module in the diagnosis end;
b2, if a matched protocol exists, carrying out protocol analysis according to the protocol specification text corresponding to the preset protocol characteristics; otherwise, running a script according to the protocol standard text provided by the analysis end and automatically generating an XML resource, and storing the generated XML resource into the protocol storage module.
2. The resolver for automotive analog communication protocol according to claim 1, wherein: the diagnostic protocol interface is an OBD communication interface protocol.
3. The resolver for automotive analog communication protocol according to claim 1, wherein: the diagnosis end comprises a protocol storage module and an automobile ECU simulator which is in communication connection with the protocol storage module, and the physical layer of the protocol storage module is respectively in driving control with the receiving and transmitting port of the analysis end and the protocol interface of the automobile ECU simulator.
4. The resolver for automotive analog communication protocol according to claim 1, wherein: the XML resources comprise the name of the data stream, a protocol conversion calculation formula, a data display mode, a display unit and corresponding command data.
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| CN107864080A (en) * | 2017-10-20 | 2018-03-30 | 深圳市元征软件开发有限公司 | Auto communication method, apparatus and computer-readable recording medium |
| CN108334546B (en) * | 2017-12-27 | 2021-11-30 | 上海未来宽带技术股份有限公司 | Communication device fusion management method, storage medium, and communication device |
| CN108429738B (en) * | 2018-02-11 | 2021-02-02 | 中车青岛四方机车车辆股份有限公司 | Data analysis method and analysis platform |
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| CN109474621B (en) * | 2018-12-18 | 2021-03-02 | 四川格物智享科技有限公司 | Module and method for converting communication protocol into visible object label |
| CN109995872A (en) * | 2019-04-09 | 2019-07-09 | 上海星融汽车科技有限公司 | Vehicle communication analogy method |
| CN110198254B (en) * | 2019-05-31 | 2023-05-12 | 卡斯柯信号有限公司 | Communication protocol online diagnosis method and diagnosis system |
| CN113259300B (en) * | 2020-02-11 | 2022-09-27 | 耀鸿(嘉兴)电子科技有限公司 | Intelligent panel control system and intelligent panel device |
| CN111880509B (en) * | 2020-06-24 | 2021-10-08 | 东风电驱动系统有限公司 | Diagnosis support and diagnosis ready state analysis method and device for national six-engine |
| CN112711247B (en) * | 2020-12-25 | 2022-09-20 | 深圳市元征科技股份有限公司 | Interface display method, interface display device and electronic equipment |
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