With the landing of software-defined automobile application scenarios, the trend of vehicles from vehicles to intelligent mobile terminals is becoming more and more obvious.
In the context of software-defined vehicles, domain-oriented and region-oriented are still the two mainstream schemes of electronic and electrical architecture.
Related data predict that from 2025 to 2030, software development and related applications will bring a huge increase in the output value of intelligent network-connected vehicles.
Source: the Chinese Society of Automotive Engineering, the era of software-defined automobile, the “pain points” and “countermeasures” of China’s automotive software testing, driven by new technologies and new experiences, automotive electronics are constantly evolving in the direction of intelligent network connection.
The workload of automotive electronic software development becomes huge and the iterative speed is getting faster and faster, so the verification in the process of software development becomes particularly important.
The increment of software development is bound to lead to an increase in testing requirements, and the huge amount of testing makes automotive software testing face a series of new issues: first, at present, automotive software-related work is highly dependent on foreign tool chains.
The reason lies in the lack of corresponding tool chain products at home or the existing tool chain is not perfect.
however, after years of development, foreign countries already have a complete tool chain.
Second, software verification tools are expensive.
These include the long time cost of cross-border procurement, the expensive purchase cost of tool products and the high annual maintenance cost of software.
Third, the tool chain vendors have weak technical support to the domestic market.
At present, most of the tool chain manufacturers belong to foreign manufacturers, and they pay more attention to the software development needs of European and American markets.
However, after years of development, China’s automotive software technology has achieved a leading position in some fields, and new technologies have been born in the process.
These technologies have not been applied abroad, and there is a lack of corresponding tool chain to support verification.
In the face of the insufficient support of “existing software tool chain” for the development of domestic automotive software technology, at the beginning of the concept of “software-defined vehicle”, Kunyi Electronic Technology (Shanghai) Co., Ltd. (hereinafter referred to as “Kunyi Electronics”) started the second growth curve and developed a series of application software, HIL software and hardware systems and intelligent driving-related test tools in the “second phase”.
The development history of Kunyi Electronics | Source: Kunyi Electronics.
At the same time, in view of the above three pain points, domestic manufacturers represented by Kunyi Electronics have also submitted their own answers.
At the “2024 Fifth Software-defined Automobile Forum and AUTOSAR China Day”, Xie Zhenxing, Technical Director of HIL Division of Kunyi Electronics, said that Kunyi Electronics has been committed to overcoming the bottleneck in the development of China’s automotive software testing tool chain.
First of all, Kunyi Electronics puts forward the products covering the whole field of automotive electronics and provides a complete systematic solution.
Secondly, Kunyi electronics fully stack self-developed software and hardware products to reduce the cost of the testing tool chain as effectively as possible.
Finally, respond to the growing needs of customers for software products by providing localized technical consulting services and deeply customized product development In many years of development, Kunyi Electronics has devoted itself to the development of embedded system R & D and testing tool chain.
In view of the pain point of software development and verification work, Kunyi Electronics relies on the full stack self-research capability and complete R & D team to develop XIL tool chain products that match different stages of V model, which helps intelligent car software development and verification.
Based on the “V” model, Kunyi Electronics continues to improve the product ecology of the tool chain.
according to Xie Zhenxing, based on the “V” model, Kunyi electronic tool chain products have basically formed an ecological closed loop, and the ecological closed loop is still in sustainable development.
On the left side of the “V” model is Kunyi Electronics’ top-down design and verification of product and technical capabilities in system modeling and analysis, model-in-the-loop, rapid prototyping controller and product-level code generation.
the right side of the “V” model covers component-level software-in-the-loop, hardware-in-the-loop, vehicle-in-the-loop and road testing and other bottom-up testing and verification.
, figure source: Kunyi Electronics, in the different stages on the right side of the “V” model, that is, the test verification stage, Kunyi Electronics provides different test solutions corresponding to it: graphic Source: Kunyi Electronics.
From the perspective of automobile functional domain, Kunyi Electronic HIL test system covers the test requirements of different domains, such as power chassis, Sandian new energy, intelligent network, intelligent driving, intelligent body, intelligent cockpit and so on.
At the same time, in the face of the diversified needs of different domains, Kunyi’s HIL test system also has four advantages: first, modular platform, which can quickly respond to a variety of customized needs and support third-party software calls.
Second, it is compatible with a wide range of coverage, can be compatible with more test development environments, realizes the closed-loop test including the model, and can also complete the open-loop test of simulation nodes.
Third, independent research and development, Kunyi electronic HIL test system has complete independent intellectual property rights.
Fourth, support deep customization, the development of technology is changing with each passing day, and the demand of products is also changing dynamically.
Kunyi Electronic HIL testing system supports customers’ product needs to keep pace with the times and jointly explore new areas.
Aiming at the concept of “data-driven software development” in the process of automotive software development, Kunyi Electronics has created a complete closed-loop test system for data-driven software development.
Vertical spatial dimension to achieve cloud-local full-link coverage.
The cloud has a management platform and a data platform.
there is a complete software and hardware platform locally, in which the software platform (VCar System) provides customers with all the software they need for testing, and the hardware platform includes boards, data recorders, real time, etc.
, and provides a complete set of optional modules.
The combination of software and hardware systems can provide test verification for the whole system under test.
Cloud platform display chart | Source: Kunyi Electronics, Kunyi electronic software test solution not only achieves full link coverage from cloud to device, but also full coverage from single controller to whole vehicle system.
At the same time, the system also supports the verification and maintenance of the whole life cycle of software development.
As the automotive electronic and electrical appliance architecture tends to be region-oriented, it is not enough to realize the data transmission and solution of vertical spatial dimension, and different test systems are needed to match it.
Therefore, Kunyi Electronics put forward the cluster test, which really realizes the horizontal pull-through of the test.
In 2024, Kunyi Electronics will also launch a new version of bus simulation and analysis software-VCAR DAS, which will help the development of more automotive software testing and verification.
Kunyi Electronic HIL testing system pursues infinite possibilities with extreme performance.
“only with extreme performance can infinite possibilities be opened.
” VCAR DAS, as the first domestic software to support both CAPL script and vehicle Ethernet communication protocol, not only integrates simulation, diagnosis,Database parsing and other functions, but also to achieve automated testing, for the automotive industry intelligent network testing solution into a new possibility.
, CAPL, Python automated testing | VCAR DAS software, combined with Kunyi electronic hardware system, VCAR DAS can achieve higher real-time performance-timestamp accuracy and time synchronization accuracy can reach 1 cycle, and the data sending and receiving cycle deviation can reach 50 seconds.
The excellent performance of the VCAR DAS test system is mainly due to the following two technologies: the first is the hardware scheme designed by Kunyi Electronics.
The advantage of this hardware scheme is that it can ensure the bus performance and quantity is not limited, has a better hardware performance than the single-chip microcomputer scheme, and can realize flexible configuration.
Fault injection such as bit interference can be realized through simple configuration, and all kinds of error frames can be uploaded accurately at the same time.
Source: Kunyi Electronics, followed by self-developed real-time technology.
The so-called “real time” means that within the specified time of the test task, it is carried out in accordance with the set requirements to ensure the certainty of the test and the certainty and repeatability of the test results.
Source: Kunyi Electronics, so Kunyi Electronics optimized the test system at the system level-running the software of the host computer in the windows system, interacting with customers through a friendly UI interface, loading the test project into the real-time system, and with the help of real-time real-time testing to ensure the certainty of the test results.
In the future, 10 gigabit or even higher speed communication will be used in the automobile communication field, the Ethernet performance of the windows system is difficult to meet the requirements of automobile software testing, while the Linux system has been fully verified in the traditional network server field and is reliable.
Kunyi Electronics believes that based on the requirements of high-bandwidth network testing and high real-time testing, the real time of Linux will become the only way for the development of network testing.
In this regard, Kunyi Electronics has made relevant technical reserves.
To meet the new stage of multi-domain integration, create a global one-stop solution, and look forward to the future, automotive electronic software is moving towards a new stage of comprehensive service architecture (SOA) and multi-domain integration.
Kunyi Electronics is also keeping up with the pace of the industry, has a deep insight into the development trend of automotive electronic software, and is actively involved in the research and development and optimization of efficient testing products.
Combined with the needs of global automotive electronic software development, Kunyi Electronics continues to select innovative test products to provide automotive electronic software and hardware in the loop global one-stop solution.
On the whole, Kunyi electronic SOA test solution includes two major contents: the car side and the cloud side.
On the vehicle side, the host computer runs the VCAR DAS software, which can generate the simulation node, simulate the behavior of the simulation node and send and receive data.
then load the compiled program code into the real time to run the program and transfer the board to communicate.
At the same time, the real-time opportunity will upload the test data results and related reports to the host computer, so as to reduce the software load rate of the host computer.
In the cloud, the cloud service node is developed based on Python, and the joint test of vehicle cloud SOA is realized in HIL environment.
The software technical solutions of Kunyi Electronics and Kunyi Electronics generally use the windows system to do the relevant interface and data analysis, and the lower computer runs the test program.
This technical feature also promotes the research and development of corresponding software testing solutions.
Combined with our own software development tools, Kunyi Electronic SIL testing solution can provide software interface definition, input and output quantity, scalar quantity and measurement quantity according to the needs of “software defined vehicle”.
At the same time, AUTOSAR standard input and output interface can be configured graphically.
At present, the SIL testing solution has completed software unit testing and software integration testing within Kunyi Electronics, and has been applied.
The prerequisite is that the software unit needs to be complete and the function after software integration is complete.
Next, according to the actual project and the pace of development, Kunyi Electronics will launch SIL software testing tool products.
Kunyi Electronic SIL testing solution, at present, China’s automotive software industry has far exceeded foreign automakers in some areas, and it is necessary to create a “Chinese business card” that belongs to Chinese automobiles in the field of software tool chain.
Among them, the domestic manufacturers represented by Kunyi Electronics are committed to the test and development of software and software tool chain, helping the development and verification of intelligent vehicles in the era of software-defined vehicles.
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