A frozen frame data dynamic parsing method and system

Abstract

The application provides a frozen frame data dynamic analysis method and system, the method comprises the following steps: when a vehicle breaks down, obtaining the frozen frame stored by a control module in real time; obtaining the ODX file corresponding to the control module and establishing a query database for the frozen frame, the query database comprises a standard DID file and the data length and data analysis method corresponding to the standard DID file; reading the internal data of the frozen frame and obtaining the diagnostic DID file in real time; comparing the diagnostic DID file with the standard DID file to obtain the data length and data analysis method corresponding to the diagnostic DID file. Through the above method, the data length and corresponding analysis method corresponding to each frozen frame can be obtained in real time and dynamically, so that the analysis of the frozen frame can be dynamically completed, and the parameters of the diagnostic instrument do not need to be modified, thereby greatly improving the diagnostic efficiency of the frozen frame, and facilitating wide promotion and use.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a method and system for dynamic parsing of frozen frame data. Background Technology

[0002] During the use of existing vehicles, some malfunctions are inevitable. Some of these malfunctions persist, while others only appear under specific operating conditions. If these malfunctions that occur under specific conditions have not been addressed beforehand, they will inevitably hinder troubleshooting. Therefore, when the control module malfunctions, it records the vehicle's state at that moment and stores it in a specific location. This data is called the control module's freeze frame.

[0003] In current automotive aftermarket diagnostic tools, only one set of frozen frames can be read at a time, and the data content and format of the frozen frames are fixed. When the control module software changes, the diagnostic tool cannot parse the modified data. At this time, the data of the diagnostic tool needs to be modified accordingly, which greatly reduces the efficiency of diagnosis and is not conducive to widespread promotion and use. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a method and system for dynamic parsing of frozen frame data, so as to solve the problem of low diagnostic efficiency of frozen frames in the prior art.

[0005] A method for dynamically parsing frozen frame data, the method comprising:

[0006] When a vehicle malfunctions, the freeze frames stored in real time by the control module are retrieved.

[0007] Obtain the ODX file corresponding to the control module and the freeze frame to establish a query database. The query database includes a standard DID file and the data length and data parsing method corresponding to the standard DID file.

[0008] Read the internal data of the frozen frame and obtain the diagnostic DID file in real time;

[0009] The diagnostic DID file is compared with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file.

[0010] The beneficial effects of this invention are as follows: By acquiring the frozen frames stored in real time by the control module, obtaining the ODX file corresponding to the control module, and establishing a query database with the frozen frames, then reading the internal data of the frozen frames and obtaining the diagnostic DID file in real time, and finally comparing the diagnostic DID file with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file. Through this method, the data length and corresponding parsing method of each frozen frame can be obtained in real time and dynamically, thereby enabling dynamic parsing of frozen frames without modifying the parameters of the diagnostic instrument. This significantly improves the diagnostic efficiency of frozen frames and is beneficial for widespread promotion and use.

[0011] Preferably, the step of obtaining the freeze frame stored in real time by the control module when a vehicle malfunctions includes:

[0012] When a vehicle malfunctions, the control module stores the frozen frame at the location of the malfunction in real time.

[0013] Establish a communication connection with the control module to acquire the freeze frame in real time.

[0014] Preferably, the step of obtaining the ODX file corresponding to the control module and establishing a query database based on the freeze frame includes:

[0015] Obtain the preset ODX file within the control module and the freeze frame stored in real time by the control module;

[0016] The query database is built using the ODX file and the frozen frame according to preset rules.

[0017] Preferably, the step of reading the frozen frame and obtaining the diagnostic DID file in real time includes:

[0018] Read the frozen frame and identify all the diagnostic DID files contained within the frozen frame;

[0019] The bytes of the diagnostic DID file are segmented according to a preset segmentation rule;

[0020] Obtain the segmented diagnostic DID files one by one.

[0021] Preferably, after the step of comparing the diagnostic DID file with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file, the method further includes:

[0022] When the data length and data parsing method corresponding to the diagnostic DID file are obtained, the diagnostic DID file is parsed using the data parsing method and the corresponding parsing result is obtained. The parsing result includes parsing success and parsing failure.

[0023] When the parsing is complete, the parsing results will be displayed in real time through the display module.

[0024] Another object of the present invention is to provide a dynamic parsing system for frozen frame data, the system comprising:

[0025] The first acquisition module is used to acquire the frozen frames stored in real time by the control module when a vehicle malfunctions.

[0026] The second acquisition module is used to acquire the ODX file corresponding to the control module and the freeze frame to establish a query database. The query database includes a standard DID file and the data length and data parsing method corresponding to the standard DID file.

[0027] The reading module is used to read the frozen frame and obtain the diagnostic DID file in real time;

[0028] The comparison module is used to compare the diagnostic DID file with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file.

[0029] In the aforementioned dynamic parsing system for frozen frame data, the first acquisition module is specifically used for:

[0030] When a vehicle malfunctions, the control module stores the frozen frame at the location of the malfunction in real time.

[0031] Establish a communication connection with the control module to acquire the freeze frame in real time.

[0032] In the aforementioned dynamic parsing system for frozen frame data, the second acquisition module is specifically used for:

[0033] Obtain the preset ODX file within the control module and the freeze frame stored in real time by the control module;

[0034] The query database is built using the ODX file and the frozen frame according to preset rules.

[0035] In the aforementioned dynamic parsing system for frozen frame data, the reading module is specifically used for:

[0036] Read the frozen frame and identify all the diagnostic DID files contained within the frozen frame;

[0037] The bytes of the diagnostic DID file are segmented according to a preset segmentation rule;

[0038] Obtain the segmented diagnostic DID files one by one.

[0039] The aforementioned dynamic parsing system for frozen frame data further includes:

[0040] When the data length and data parsing method corresponding to the diagnostic DID file are obtained, the diagnostic DID file is parsed using the data parsing method and the corresponding parsing result is obtained. The parsing result includes parsing success and parsing failure.

[0041] When the parsing is complete, the parsing results will be displayed in real time through the display module.

[0042] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0043] Figure 1 A flowchart of the dynamic parsing method for frozen frame data provided in the first embodiment of the present invention;

[0044] Figure 2 A flowchart of the dynamic parsing method for frozen frame data provided in the second embodiment of the present invention;

[0045] Figure 3 This is a structural block diagram of the frozen frame data dynamic parsing system provided in the third embodiment of the present invention.

[0046] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0047] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0048] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0050] In current automotive aftermarket diagnostic tools, only one set of frozen frames can be read at a time, and the data content and format of the frozen frames are fixed. When the control module software changes, the diagnostic tool cannot parse the modified data. At this time, the data of the diagnostic tool needs to be modified accordingly, which greatly reduces the efficiency of diagnosis and is not conducive to widespread promotion and use.

[0051] In this embodiment, it should be noted that the dynamic parsing method for frozen frame data is specifically applied between the diagnostic tool and the vehicle. It is understood that existing vehicles have vehicle control modules, lighting control modules, and vehicle infotainment control modules installed inside their bodies, all of which have the function of storing frozen frames. The diagnostic tool is pre-installed with diagnostic software and equipped with a display screen.

[0052] Please see Figure 1 The image shows a method for dynamically parsing frozen frame data provided in the first embodiment of the present invention. The method specifically includes the following steps:

[0053] Step S10: When a vehicle malfunctions, obtain the freeze frame stored in real time by the control module.

[0054] It is understandable that existing cars will inevitably experience some malfunctions as they age. For example, when the headlights malfunction, the headlight control module can store the frozen frames generated at that time in real time.

[0055] Step S20: Obtain the ODX file corresponding to the control module and the freeze frame to establish a query database. The query database includes a standard DID file and the data length and data parsing method corresponding to the standard DID file.

[0056] Specifically, in this embodiment, when a vehicle malfunctions and requires diagnosis, the diagnostic tool can obtain the ODX (module data) file corresponding to the control module and the freeze frames stored in the control module to establish a query database. More specifically, the query database includes a standard DID (diagnostic identifier) ​​file and the data length and data parsing method corresponding to the standard DID file.

[0057] It should be noted that each control module has a corresponding ODX file, which is stored within the control module and can be retrieved by external diagnostic instruments when needed.

[0058] Step S30: Read the frozen frame and obtain the diagnostic DID file in real time;

[0059] Specifically, the diagnostic instrument can also acquire freeze frames in the control module where the fault occurs in real time, and can acquire diagnostic DID files in real time through preset diagnostic software.

[0060] Step S40: Compare the diagnostic DID file with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file.

[0061] In this embodiment, when the diagnostic instrument obtains both the standard DID file and the diagnostic DID file, it compares the diagnostic DID file with the standard DID file to retrieve the data length and data parsing method corresponding to the diagnostic DID file from the database. This allows for effective parsing of the diagnostic DID file, enabling real-time and dynamic acquisition of the data length and parsing method for each frozen frame and effective parsing.

[0062] In use, the system acquires the frozen frames stored in real time by the control module, obtains the corresponding ODX file of the control module, and establishes a query database using the frozen frames. Then, it reads the internal data of the frozen frames and obtains the diagnostic DID file in real time. Finally, it compares the diagnostic DID file with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file. This method allows for real-time and dynamic acquisition of the data length and corresponding parsing method for each frozen frame, enabling dynamic parsing of frozen frames without modifying the diagnostic instrument's parameters. This significantly improves the diagnostic efficiency of frozen frames and facilitates widespread adoption and use.

[0063] It should be noted that the above implementation process is only to illustrate the feasibility of this application, but it does not mean that the dynamic parsing method for frozen frame data of this application has only one implementation process. On the contrary, as long as the dynamic parsing method for frozen frame data of this application can be implemented, it can be included in the feasible implementation scheme of this application.

[0064] In summary, the frozen frame data dynamic parsing method in the above embodiments of the present invention can obtain the data length and parsing method corresponding to each frozen frame in real time and dynamically, thereby dynamically completing the parsing of frozen frames without modifying the parameters of the diagnostic instrument, thus greatly improving the diagnostic efficiency of frozen frames and facilitating its widespread promotion and use.

[0065] Please see Figure 2 The figure shows a dynamic parsing method for frozen frame data provided in the second embodiment of the present invention, which specifically includes the following steps:

[0066] Step S11: When a vehicle malfunctions, the control module stores the frozen frame at the location of the malfunction in real time; a communication connection is established with the control module to obtain the frozen frame in real time.

[0067] Specifically, in this embodiment, when a vehicle malfunctions, the control module whose control range includes the location of the malfunction can immediately store the frozen frame generated at this time in real time.

[0068] Then, a communication connection is established between the diagnostic instrument and the aforementioned control module to obtain the frozen frames at the location of the fault in real time.

[0069] Step S21: Obtain the preset ODX file in the control module and the freeze frame stored in real time by the control module; establish the query database based on the ODX file and the freeze frame according to preset rules.

[0070] It should be noted that the working principle of this step is similar to that of step S20 above. In this embodiment, the ODX file preset in the control module and the freeze frame stored in real time by the control module are obtained by the diagnostic instrument.

[0071] Secondly, the acquired ODX files and freeze frames are used to build a query database according to preset rules within the diagnostic instrument. Specifically, the preset rules are as follows: the first part is the first standard DID file; the second part is the data parsing method corresponding to the first standard DID file; the third part is the second DID file; the fourth part is the data parsing method of the third standard DID file; and so on, thereby establishing a complete query database.

[0072] Step S31: Read the frozen frame and identify all the diagnostic DID files contained in the frozen frame; segment the bytes of the diagnostic DID files according to a preset segmentation rule; and obtain the segmented diagnostic DID files one by one.

[0073] Specifically, in this embodiment, when the diagnostic instrument obtains a frozen frame at the location of the fault, the diagnostic instrument can identify all the diagnostic DID files contained in the frozen frame and segment the bytes of the diagnostic DID files according to a preset segmentation rule; and obtain the segmented diagnostic DID files one by one.

[0074] More specifically, in this embodiment, for example, the diagnostic instrument can divide the first two bytes of the diagnostic DID file into a first segment, and then retrieve the corresponding data parsing method of the first segment of the diagnostic DID file from the aforementioned query database; secondly, it can divide the last two bytes of the diagnostic DID file into a second segment, and then retrieve the corresponding data parsing method of the second segment of the diagnostic DID file from the aforementioned query database. Based on the same principle, the data parsing methods corresponding to the third, fourth, and fifth segments of the diagnostic DID file can be obtained respectively, thereby effectively retrieving the data parsing method corresponding to the diagnostic DID file.

[0075] Step S41: When the data length and data parsing method corresponding to the diagnostic DID file are obtained, the diagnostic DID file is parsed using the data parsing method and the corresponding parsing result is obtained. The parsing result includes parsing success and parsing failure. When the parsing is completed, the parsing result is displayed in real time through the display module.

[0076] In this embodiment, when the diagnostic instrument obtains the data length and data parsing method corresponding to the diagnostic DID file, it can parse the diagnostic DID file using the obtained data parsing method and obtain the corresponding parsing result. Specifically, the parsing result includes parsing success and parsing failure. During the diagnostic process, when parsing is complete, the parsing result is displayed in real time through the display module. If parsing is successful, it displays "parsing successful"; if parsing fails, it displays "parsing failed," so that the user can clearly understand the diagnostic result.

[0077] It should be noted that the method provided in the second embodiment of the present invention has the same implementation principle and some technical effects as the first embodiment. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the first embodiment.

[0078] In summary, the frozen frame data dynamic parsing method in the above embodiments of the present invention can obtain the data length and parsing method corresponding to each frozen frame in real time and dynamically, thereby dynamically completing the parsing of frozen frames without modifying the parameters of the diagnostic instrument, thus greatly improving the diagnostic efficiency of frozen frames and facilitating its widespread promotion and use.

[0079] Please see Figure 3The figure shows a frozen frame data dynamic parsing system provided in the third embodiment of the present invention. The system specifically includes:

[0080] The first acquisition module 12 is used to acquire the freeze frame stored in real time by the control module when the vehicle malfunctions.

[0081] The second acquisition module 22 is used to acquire the ODX file corresponding to the control module and the freeze frame to establish a query database. The query database includes a standard DID file and the data length and data parsing method corresponding to the standard DID file.

[0082] Reading module 32 is used to read the frozen frame and obtain the diagnostic DID file in real time;

[0083] The comparison module 42 is used to compare the diagnostic DID file with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file.

[0084] In the aforementioned dynamic parsing system for frozen frame data, the first acquisition module 12 is specifically used for:

[0085] When a vehicle malfunctions, the control module stores the frozen frame at the location of the malfunction in real time.

[0086] Establish a communication connection with the control module to acquire the freeze frame in real time.

[0087] In the aforementioned dynamic parsing system for frozen frame data, the second acquisition module 22 is specifically used for:

[0088] Obtain the preset ODX file within the control module and the freeze frame stored in real time by the control module;

[0089] The query database is built using the ODX file and the frozen frame according to preset rules.

[0090] In the aforementioned dynamic parsing system for frozen frame data, the reading module 32 is specifically used for:

[0091] Read the frozen frame and identify all the diagnostic DID files contained within the frozen frame;

[0092] The bytes of the diagnostic DID file are segmented according to a preset segmentation rule;

[0093] Obtain the segmented diagnostic DID files one by one.

[0094] The aforementioned dynamic parsing system for frozen frame data further includes:

[0095] When the data length and data parsing method corresponding to the diagnostic DID file are obtained, the diagnostic DID file is parsed using the data parsing method and the corresponding parsing result is obtained. The parsing result includes parsing success and parsing failure.

[0096] When the parsing is complete, the parsing results will be displayed in real time through the display module.

[0097] In summary, the frozen frame data dynamic parsing method and system in the above embodiments of the present invention can obtain the data length and parsing method corresponding to each frozen frame in real time and dynamically, thereby dynamically completing the parsing of frozen frames without modifying the parameters of the diagnostic instrument, thus greatly improving the diagnostic efficiency of frozen frames and facilitating its widespread promotion and use.

[0098] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0099] More specific examples of computer-readable media (a non-exhaustive list) include: electrical connections (electronic devices) having one or more wires, portable computer disk drives (magnetic devices), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0100] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0101] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0102] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for dynamically parsing frozen frame data, characterized in that, The method includes: When a vehicle malfunctions, the freeze frames stored in real time by the control module are retrieved. Obtain the ODX file corresponding to the control module and the freeze frame to establish a query database. The query database includes a standard DID file and the data length and data parsing method corresponding to the standard DID file. This step specifically includes: obtaining the preset ODX file in the control module and the freeze frame stored in real time by the control module; The query database is established using the ODX file and the frozen frame according to preset rules. Read the frozen frame and obtain the diagnostic DID file in real time; This step specifically includes: reading the frozen frame and identifying all the diagnostic DID files contained within the frozen frame; The bytes of the diagnostic DID file are segmented according to a preset segmentation rule; Obtain the segmented diagnostic DID files one by one; The diagnostic DID file is compared with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file.

2. The method for dynamically parsing frozen frame data according to claim 1, characterized in that: The step of obtaining the freeze frame stored in real time by the control module when a vehicle malfunctions includes: When a vehicle malfunctions, the control module stores the frozen frame at the location of the malfunction in real time. Establish a communication connection with the control module to acquire the freeze frame in real time.

3. The method for dynamically parsing frozen frame data according to claim 1, characterized in that: After the step of comparing the diagnostic DID file with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file, the method further includes: When the data length and data parsing method corresponding to the diagnostic DID file are obtained, the diagnostic DID file is parsed using the data parsing method and the corresponding parsing result is obtained. The parsing result includes parsing success and parsing failure. When the parsing is complete, the parsing results will be displayed in real time through the display module.

4. A dynamic parsing system for frozen frame data, characterized in that, The system includes: The first acquisition module is used to acquire the frozen frames stored in real time by the control module when a vehicle malfunctions. The second acquisition module is used to acquire the ODX file corresponding to the control module and the freeze frame to establish a query database. The query database includes a standard DID file and the data length and data parsing method corresponding to the standard DID file. Specifically, the second acquisition module is used for: Obtain the preset ODX file within the control module and the freeze frame stored in real time by the control module; The query database is established using the ODX file and the frozen frame according to preset rules. The reading module is used to read the frozen frame and obtain the diagnostic DID file in real time; The reading module is specifically used for: Read the frozen frame and identify all the diagnostic DID files contained within the frozen frame; The bytes of the diagnostic DID file are segmented according to a preset segmentation rule; Obtain the segmented diagnostic DID files one by one; The comparison module is used to compare the diagnostic DID file with the standard DID file to obtain the data length and data parsing method corresponding to the diagnostic DID file.

5. The frozen frame data dynamic parsing system according to claim 4, characterized in that: The first acquisition module is specifically used for: When a vehicle malfunctions, the control module stores the frozen frame at the location of the malfunction in real time. Establish a communication connection with the control module to acquire the freeze frame in real time.

6. The frozen frame data dynamic parsing system according to claim 4, characterized in that: The system also includes: When the data length and data parsing method corresponding to the diagnostic DID file are obtained, the diagnostic DID file is parsed using the data parsing method and the corresponding parsing result is obtained. The parsing result includes parsing success and parsing failure. When the parsing is complete, the parsing results will be displayed in real time through the display module.

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