CN116243891A - AutoSAR BSW system CAN signal design method and system - Google Patents

Abstract

The embodiment of the invention relates to the technical field of signal design, and particularly discloses a BSW system CAN signal design method and system of an AutoSAR. According to the embodiment of the invention, the CANdb++ tool is used for converting the corresponding CAN message in the CAN protocol into the DBC; performing BSW network signal design according to the DBC; the BSW and the CAN input/output SWC interface of the ASW are subjected to Mapping matching, and signal matching design is carried out; software integration using Hightec tools; after software integration is completed, software function test is carried out to judge whether the function is normal. The BSW and ASW decoupling is realized, BSW change caused by signal change in CANMessage is avoided, the coupling degree between the BSW and the ASW can be reduced, the design flexibility is improved, the change work of software BSW is reduced, the working efficiency of software integration is improved, and the error rate and the labor cost of software integration are reduced.

Description

AutoSAR BSW system CAN signal design method and system

Technical Field

The invention belongs to the technical field of signal design, and particularly relates to a BSW system CAN signal design method and system of an AutoSAR.

Background

AUTOSAR (AUTotmotiveOpenSystemARchitecture) it refers to an open system architecture of an automobile, which is a set of standard protocols established by the global large automobile factories, automobile parts suppliers and automobile electronic software system companies in combination, and is an empirical summary of automobile technology development for more than one hundred years. The AUTOSAR architecture aims to improve updating and exchanging of automobile electronic system software and simultaneously, more conveniently and effectively manage automobile electronic software systems which are increasingly complex. The application of the AUTOSAR specification standardizes the interface characteristics of the electronic control units with different structures, greatly shortens the development period of the automobile electronic software and improves the quality of the automobile electronic software.

The AUTOSAR architecture is beneficial to the collaborative development of software systems among automobile electronic industries, improves the efficiency of replacing software modules of automobile manufacturers, promotes the upgrading and updating of software, and improves the management efficiency of complex system software. The main goals of developing collaboration between AUTOSAR members are: the basic system functions and function interfaces are standardized, so that the software development partners can exchange, convert and integrate respective vehicle-mounted network functions, and the software updating and system upgrading efficiency after the vehicle is sold is improved to the greatest extent.

In the AutoSAR design in the prior art, CAN specific signals are analyzed and packed in a BSW layer, and the analyzed and packed specific signals are associated with ASW in a system signal Mapping matching mode. Thus, the prior art has the following disadvantages: 1. the coupling degree of the BSW and the ASW is high, the design is inflexible, and the BSW needs to perform signal matching because the ASW is newly added with a system signal interface each time; 2. the signal in the canessage in the DBC is changed, and the BSW needs to be updated again.

Disclosure of Invention

The embodiment of the invention aims to provide a BSW system CAN signal design method and system of an AutoSAR, which aims to solve the problems in the background technology.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

a BSW system CAN signal design method of an AutoSAR comprises the following steps:

converting a corresponding CAN message in a CAN protocol into a single signal of Uint64 by using a CANdb++ tool and occupying a DBC of 8Bytes data field;

according to the DBC, performing CAN network signal design of BSW;

the BSW system signal is mapped with an interface of the CAN input/output SWC of the ASW, and the signal matching design is carried out;

software integration using Hightec tools;

after software integration is completed, software function test is carried out to judge whether the function is normal.

As a further limitation of the technical solution of the embodiment of the present invention, the use of the candb++ tool to convert the corresponding CAN packet in the CAN protocol into a single Uint64 signal and occupy the DBC of the 8Bytes data field specifically includes the following steps:

installing a CANdb++ tool;

acquiring a formally published CAN protocol used by a project;

according to the CAN protocol, a CANdb++ tool is used for converting a corresponding CAN message in the CAN protocol into a signal of a single Uint64 and occupying a DBC of 8Bytes data field.

As a further limitation of the technical solution of the embodiment of the present invention, the DBC for converting, according to the CAN protocol, a corresponding CAN packet in the CAN protocol into a single Uint64 signal using a candb++ tool and occupying an 8Bytes data field specifically includes the following steps:

determining corresponding CAN message information and CAN network information in the CAN protocol according to the CAN protocol;

the CAN message is converted into a single UIT 64 signal using the CANdb++ tool and occupies the DBC of an 8Bytes data field.

As a further limitation of the technical solution of the embodiment of the present invention, the designing of the CAN network signal for BSW according to the DBC specifically includes the following steps:

according to the DBC, CAN signals and network design of BSW are carried out;

and according to the DBC, analyzing and packaging the signal of the single UIT 64 into a specific CAN protocol signal by using a CAN analysis library, and completing the CAN packaging of the ASW and the SWC design of analysis.

As a further limitation of the technical solution of the embodiment of the present invention, the CAN signal and network design for performing BSW according to the DBC is specifically: according to the DBC, a Isolar tool is used for carrying out CAN signal and network import design of the BSW, a relevant BSW module of the CAN is configured, meanwhile, the data length of the CAN is configured to meet the requirements of input check and output, and only 8Bytes are used in a data field.

As a further limitation of the technical solution of the embodiment of the present invention, the Mapping matching is performed on the interface between the BSW system signal and the CAN input/output SWC of the ASW, and the signal matching design specifically includes the following steps:

using a software development technology to design and develop a general analysis method for analyzing the DBC into a specific signal in a CAN protocol;

designing an input/output SWC according to the DBC by using a Simulink technology, and using the SWC to perform Mapping with a BSW system signal;

and the RTE in the BSW calls the operation entity of the SWC, and the BSW system signal and the SWC input interface are mapped to complete the BSW system signal design.

As a further limitation of the technical solution of the embodiment of the present invention, after the software integration is completed, a software function test is performed to determine whether the function is normal, including the following steps:

after software integration is completed, preparing a controller or a testing tool;

and (3) using a controller or a testing tool to perform software function test and judging whether the function is normal.

The system comprises a DBC conversion unit, a network signal design unit, a signal matching design unit, a software integration unit and a software function test unit, wherein:

the DBC conversion unit is used for converting a corresponding CAN message in the CAN protocol into a signal of a single Uint64 by using a CANdb++ tool and occupying a DBC of 8Bytes data field;

the network signal design unit is used for carrying out CAN network signal design of BSW according to the DBC;

the signal matching design unit is used for Mapping matching between the BSW system signal and an interface of the CAN input/output SWC of the ASW, and carrying out signal matching design;

a software integration unit for performing software integration using a Hightec tool;

and the software function test unit is used for performing software function test after software integration is completed and judging whether the function is normal.

Compared with the prior art, the invention has the beneficial effects that:

according to the embodiment of the invention, the CANdb++ tool is used for converting the corresponding CAN message in the CAN protocol into the DBC; performing BSW network signal design according to the DBC; the BSW and the CAN input/output SWC interface of the ASW are subjected to Mapping matching, and signal matching design is carried out; software integration using Hightec tools; after software integration is completed, software function test is carried out to judge whether the function is normal. The BSW and ASW decoupling is realized, BSW change caused by signal change in CANMessage is avoided, the coupling degree between the BSW and the ASW can be reduced, the design flexibility is improved, the change work of software BSW is reduced, the working efficiency of software integration is improved, and the error rate and the labor cost of software integration are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 shows a schematic diagram of the related art of the present invention.

Fig. 2 shows a flow chart of a method provided by an embodiment of the invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It will be appreciated that, as shown in fig. 1, a schematic diagram of the related art of the present invention is shown, where in the AutoSAR design of the prior art, the CAN specific signal is parsed and packaged in the BSW layer, and the parsed and packaged specific signal is associated with the ASW by the system signal Mapping matching manner. Thus, the prior art has the following disadvantages: 1. the coupling degree of the BSW and the ASW is high, the design is inflexible, and the BSW needs to perform signal matching because the ASW is newly added with a system signal interface each time; 2. the signal in the canessage in the DBC is changed, and the BSW needs to be updated and configured again.

In order to solve the problems, the embodiment of the invention converts the corresponding CAN message in the CAN protocol into DBC by using a CANdb++ tool; according to the DBC, BSW network signal design is carried out; the BSW and the CAN input/output SWC interface of the ASW are subjected to Mapping matching, and signal matching design is carried out; software integration using Hightec tools; after software integration is completed, software function test is carried out to judge whether the function is normal. The BSW and ASW decoupling is realized, BSW change caused by signal change in CANMessage is avoided, the coupling degree between the BSW and the ASW can be reduced, the design flexibility is improved, the change work of software BSW is reduced, the working efficiency of software integration is improved, and the error rate and the labor cost of software integration are reduced.

Specifically, fig. 2 shows a flowchart of a method provided by an embodiment of the present invention.

The BSW system CAN signal design method of the AutoSAR comprises the following steps:

step one, converting a corresponding CAN message in a CAN protocol into a signal of a single Uint64 by using a CANdb++ tool and occupying a DBC of 8Bytes data field.

In the embodiment of the invention, the CAN protocol is a formally issued CAN protocol used by projects by installing a CANdb++ tool, and the CANdb++ tool is used for converting the corresponding CAN message in the CAN protocol into the DBC.

It will be appreciated that CANdb++ is a core tool in the VectorCAN toolkit and may be launched directly from the VectorCAN tools CANalyzer, CANoe, CANape and CANscope et al. This provides the VectorCAN tool with the capability to directly access communication related data via candb++. Data related to communications are defined, modified and managed entirely within candb++; the VectorCAN tool can only read these data. The data related to the communication must be present in the form of a CANdb network file (dbc) in order for the VectorCAN tool to have access to them.

And step two, designing CAN network signals of the BSW according to the DBC.

In the embodiment of the invention, according to the DBC, the Isolar tool is used for carrying out CAN design of the BSW, and according to the DBC, the Matlab tool is used for carrying out CAN input/output SWC design of the ASW.

It will be appreciated that ISOLAR tools are relatively common design tools in automotive industry software, and that ISOLAR tools primarily include ISOLAR-AB, RTA-BSW, RTA-OS, RTA-RTE; MATLAB is commercial mathematical software available from MathWorks corporation of america for use in the fields of data analysis, wireless communications, deep learning, image processing and computer vision, signal processing, quantitative finance and risk management, robotics, control systems, and the like.

And thirdly, mapping matching is carried out on BSW system signals and interfaces of CAN input/output SWC of the ASW, and signal matching design is carried out.

In the embodiment of the invention, a software development technology is used for analyzing the DBC into a general analysis method of a specific signal in the CAN protocol, a Simulink technology is used for inputting the SWC according to the DBC design for Mapping with the BSW system signal, the SWC is called through the BSW, and the BSW system signal and an SWC input interface are mapped to complete the BSW system signal design.

And step four, software integration is carried out by using a Hightec tool.

It will be appreciated that the Hightec tool, being the Hightec compiler, generates code that runs fast with little space occupation cost through advanced optimization techniques. The compiler can batch process through its command line interface, and can also be used in IDE, such as HighTec Eclipse-based secure multi-core platform. The HighTec compiler has a faster construction system than similar products and supports a parallel compiling process.

And fifthly, after software integration is completed, performing software function test to judge whether the function is normal.

In the embodiment of the invention, after software integration is completed, a controller or a testing tool is determined, and then the controller or the testing tool is used for performing software function test to judge whether the function is normal.

Further, in still another preferred embodiment provided by the present invention, an autocar BSW system CAN signal design system includes a DBC conversion unit, a network signal design unit, a signal matching design unit, a software integration unit, and a software function test unit, wherein:

and the DBC conversion unit is used for converting the corresponding CAN message in the CAN protocol into a signal of a single UIT 64 by using a CANdb++ tool and occupying the DBC of 8Bytes data fields.

In the embodiment of the invention, the DBC conversion unit converts the corresponding CAN message in the CAN protocol into the DBC by installing the CANdb++ tool, wherein the CAN protocol is a formally published CAN protocol used by a project, and the CANdb++ tool is used.

And the network signal design unit is used for carrying out CAN network signal design of the BSW according to the DBC.

In the embodiment of the invention, the network signal design unit uses the Isolar tool to carry out CAN design of the BSW according to the DBC, and uses the Matlab tool to carry out CAN input/output SWC design of the ASW according to the DBC.

And the signal matching design unit is used for Mapping matching between the BSW system signal and the 5 interface of the CAN input/output SWC of the ASW and carrying out signal matching design.

In the embodiment of the invention, a signal matching design unit uses a software development technology to analyze a DBC into a general analysis method of a specific signal in a CAN protocol, uses a Simulink technology, inputs a SWC according to the DBC design, is used for Mapping with a BSW system signal, invokes the SWC through the BSW, and performs Mapping on the BSW system signal and an SWC input interface to complete the BSW system signal design.

And 0 a software integration unit for performing software integration by using a Hightec tool.

And the software function test unit is used for performing software function test after software integration is completed and judging whether the function is normal.

In the embodiment of the invention, after software integration is completed, the software function test unit determines the controller or the test tool, and further uses the controller or the test tool to perform software function test to judge whether the function is normal 5.

In summary, in the embodiment of the present invention, the corresponding CAN message in the CAN protocol is converted into the DBC by using the candb++ tool; according to the DBC, BSW network signal design is carried out; the BSW and the CAN input/output SWC interface of the ASW are subjected to Mapping matching, and signal matching design is carried out; using Hightec

The tool performs software integration; after software integration is completed, software function test is carried out to judge whether the function is normal 0. The BSW and ASW decoupling is realized, BSW change caused by signal change in CANMessage is avoided, the coupling degree between the BSW and the ASW can be reduced, the design flexibility is improved, the change work of software BSW is reduced, the working efficiency of software integration is improved, and the error rate and the labor cost of software integration are reduced.

It should be understood that, although the steps in the flowcharts of the embodiments of the present invention are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in various embodiments may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or other steps.

Those skilled in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by a computer program for instructing relevant hardware, where the program may be stored in a non-volatile computer readable storage medium, and where the program, when executed, may include processes in the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (8)

1. The BSW system CAN signal design method of the AutoSAR is characterized by comprising the following steps of:

converting a corresponding CAN message in a CAN protocol into a single signal of Uint64 by using a CANdb++ tool and occupying a DBC of 8Bytes data field;

according to the DBC, performing CAN network signal design of BSW;

the BSW system signal is mapped with an interface of the CAN input/output SWC of the ASW, and the signal matching design is carried out;

software integration using Hightec tools;

after software integration is completed, software function test is carried out to judge whether the function is normal.

2. The method for designing the BSW system CAN signal of AutoSAR according to claim 1, wherein said using the candb++ tool to convert the corresponding CAN message in the CAN protocol into a single Uint64 signal and occupying the DBC of 8Bytes data field specifically comprises the steps of:

installing a CANdb++ tool;

acquiring a formally published CAN protocol used by a project;

according to the CAN protocol, a CANdb++ tool is used for converting a corresponding CAN message in the CAN protocol into a signal of a single Uint64 and occupying a DBC of 8Bytes data field.

3. The method for designing the BSW system CAN signal of AutoSAR according to claim 2, wherein said DBC using a candb++ tool to convert the corresponding CAN message in the CAN protocol into a single Uint64 signal and occupying 8Bytes data field according to the CAN protocol specifically comprises the steps of:

determining corresponding CAN message information and CAN network information in the CAN protocol according to the CAN protocol;

the CAN message is converted into a single UIT 64 signal using the CANdb++ tool and occupies the DBC of an 8Bytes data field.

4. The method for designing the BSW system CAN signal of AutoSAR according to claim 1, wherein said designing the BSW CAN network signal according to said DBC specifically comprises the steps of:

according to the DBC, CAN signals and network design of BSW are carried out;

and according to the DBC, analyzing and packaging the signal of the single UIT 64 into a specific CAN protocol signal by using a CAN analysis library, and completing the CAN packaging of the ASW and the SWC design of analysis.

5. The method for designing a BSW system CAN signal of AutoSAR according to claim 4, wherein said designing a BSW CAN signal and network according to said DBC is specifically: according to the DBC, a Isolar tool is used for carrying out CAN signal and network import design of the BSW, a relevant BSW module of the CAN is configured, meanwhile, the data length of the CAN is configured to meet the requirements of input check and output, and only 8Bytes are used in a data field.

6. The method for designing the BSW system CAN signal of AutoSAR according to claim 1, wherein the Mapping matching is performed between the BSW system signal and the interface of the CAN input/output SWC of the ASW, and the signal matching design specifically comprises the following steps:

using a software development technology to design and develop a general analysis method for analyzing the DBC into a specific signal in a CAN protocol;

designing an input/output SWC according to the DBC by using a Simulink technology, and using the SWC to perform Mapping with a BSW system signal;

and the RTE in the BSW calls the operation entity of the SWC, and the BSW system signal and the SWC input interface are mapped to complete the BSW system signal design.

7. The method for designing the BSW system CAN signal of AutoSAR according to claim 1, wherein after the software integration is completed, performing a software function test to determine whether the function is normal, comprising the steps of:

after software integration is completed, preparing a controller or a testing tool;

and (3) using a controller or a testing tool to perform software function test and judging whether the function is normal.

8. The BSW system CAN signal design system of the AutoSAR is characterized by comprising a DBC conversion unit, a network signal design unit, a signal matching design unit, a software integration unit and a software function test unit, wherein:

the DBC conversion unit is used for converting a corresponding CAN message in the CAN protocol into a signal of a single Uint64 by using a CANdb++ tool and occupying a DBC of 8Bytes data field;

the network signal design unit is used for carrying out CAN network signal design of BSW according to the DBC;

the signal matching design unit is used for Mapping matching between the BSW system signal and an interface of the CAN input/output SWC of the ASW, and carrying out signal matching design;

a software integration unit for performing software integration using a Hightec tool;

and the software function test unit is used for performing software function test after software integration is completed and judging whether the function is normal.

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