Autonomous driving technology is reshaping the automotive industry landscape at an unprecedented speed, bringing disruptive value to improving traffic efficiency, reducing accident rates and reconstructing the urban travel ecosystem. It not only promotes the intelligent transformation of the automotive industry, but also gives rise to the model innovation of infrastructure and public services, laying a technical foundation for building a safer and more convenient travel system.

At the critical stage when the industry is making a leap from ADAS to advanced intelligent driving, the R&D system is confronted with the high cost of real vehicle testing.Operating costs, labor costs, vehicle depreciation, etcCore challenges such as insufficient coverage of long-tail scenarios and difficulties in reproducing high-risk working conditions. Regarding these pain points VCARSYSTEMand IPG Automotive China jointly launched a simulation test solution. Through the closed loop of high-precision scene libraries and hardware-in-the-loop verification technology, it realizes the full-scene functional test of the intelligent driving domain controller in the laboratory environment.Help enterprises break through the bottleneck of safety verification and seize the commanding heights of intelligent driving research and development in the fierce competition.

A quick overview of the core advantages of the plan:

Get a Head start in New Car Development

·The actual vehicle has not arrived yet, but the verification is ahead！

Start the development of intelligent driving functions in advance to seize the market opportunity

Scene coverage without blind spots

·Support ENCAP/CNCAP/IVISTA Typical scenario cases +Customized scenarios

·Original "real data + simulation" fusion modeling,Fault injectionFully comply with ISO 26262

Strong consistency between the virtual and the real

·Breakthrough optimization algorithmNarrow the performance gap between cloud-based simulation and real vehicles(Precise matching of computing power, model and speed)

Sensor Ultra-Realistic Simulation

· Physics-level modeling!Rain and fog shielding/lens soilingWait for real interference simulation

· Multi-sensor cooperative verification coverage99% hardware testing requirementsThe cost of road testing has been significantly reduced

Full Chain Closed loop

· Simulation test → Scene management → Data backflowOne-stop solution

· Full-stack self-developed solutionSafety and controllability + cost optimizationDouble guarantee

VCARSYSTEM AD HIL Test System

VCARSYSTEM AD HIL (Autonomous Driving HIL), with its high real-time performance, realizes millisecond-level precise signal transmission and interaction for the autonomous driving domain controller Comprehensive functional and performance testing to quickly and comprehensively build a technical safety fortress for autonomous driving.

Function Overview:

1. Functional status test

The ADAS domain control function test covers driving (such as ACC, LCC, etc.) and parking (such as APA, RPA, etc.) functions. Functional testing not only involves the verification of functional state machines, but also facilitates the development of test cases for forward, reverse and boundary thresholds, ensuring a closed loop of functional evaluation for all signals.

2. Functional scenario testing

The VCARSYSTEM AD HIL test system has a powerful functional scenario testing capability. It can flexibly combine single-scenario and multi-scenario elements for testing based on the scenario library and supports the expansion of the scenario library. Meanwhile, the system can be tested under single or multi-functional coupling conditions, achieving full coverage of the test environment and functional status.

3. Fault injection test

Given the high risk of real vehicle fault injection, the VCARSYSTEM AD HIL test platform has become a more ideal test choice. This system is capable of confirming the response between the intelligent driving controller and the workpiece after fault injection, thereby forming a closed-loop test and effectively enhancing the safety of the test process.

4. Functional smoke test

In response to the rapid iteration of intelligent driving software, VCARSYSTEM AD HIL Test System provides functional smoke testing, automatically executes test cases covering the priorities of each function, and issues a complete report within 2 to 4 hours, facilitating the rapid iteration of algorithms.

5. System integration test

By using the real ECU in the loop and a highly simulated test environment, the VCARSYSTEM AD HIL test system can comprehensively test the interfaces, functions and performances of each APP in the domain control, ensuring the coordination and consistency of each component of the ADAS system.

6. Joint stress test

The VCARSYSTEM AD HIL test system supports a large number of continuous stress tests to evaluate the system performance stability of apps within the domain control (such as CPU usage rate, trigger cycle, etc.), ensuring that the ADAS system can still work normally under extreme circumstances.

IPG CarMaker simulation software

Interpublic CarMaker as a high-performance simulation platform, widely support a variety of standard interface and standard format, such as C/C + +, Simulink, Python, FMI, XIL and OpenX (OpenDRIVE/OpenSCENARIO/OpenCRG/OSI), etc., This enables it to be easily integrated into the customer's existing toolchain and achieve seamless integration.

Based on a modular architecture, CarMaker supports full-chain test validation from Model in the loop (MIL), Software in the Loop (SIL), Hardware in the loop (HIL) to Vehicle in the loop (VIL). Through parallel execution technology, the platform ensures the continuity and stability of the testing process at each stage, meeting the quality control requirements of the entire process from algorithm development to system integration.

In the SIL phase, CarMaker uses Docker containerization technology to enable elastic scalability of cloud resources and distributed computing. The measured data show that this schemeSimulation tests of millions of kilometers can be completed in a single dayThe efficiency is increased by more than ten times compared with the traditional local testing. After entering the HIL stage, combined with the VCARSYSTEM real-time hardware platform, the verification cycle is further shortened through automated test orchestration.

The platform is equipped with an intelligent data analysis module, supporting structured storage of massive test data and in-depth processing across tools. Through the IPG Control real-time monitoring interface, users can dynamically track key indicators and synchronously compare multiple rounds of test results to achieve visual evaluation of the test effect. In addition, the open data interface allows for the integration of third-party analysis tools, providing decision support for the optimization of test strategies.

VCARSYSTEM and IPG joint simulation test solution

The simulation test solution jointly developed by VCARSYSTEM and IPG is a full-function test system integrating scene simulation. It can conduct real-time system function tests, fault injection tests, and functional scene tests for domain controllers, ensuring the comprehensiveness and reliability of the tests.

In terms of simulation testing, this solution is based on the real-time injection of scene simulation, comprehensively covering traffic environment scene simulation, vehicle model simulation (including horizontal and vertical control), and sensor simulation (involving cameras, lidar, millimeter-wave radar, ultrasonic radar, GNSS/IMU, etc.) to evaluate the functions and performance of the autonomous driving domain controller.

The system integrates core components such as RTPC real-time server, scene simulation server, upper computer software, CarMaker, etc. It can not only perform open/closed loop debugging of domain control system to ensure functional perfection, but also meet the verification requirements of standard regulations.

Customers can throughWrite and manage automated test softwareThousands of Test cases Comprehensively cover all requirements, functions and ODD (Operational Design Domain) to ensure the safety and reliability of autonomous driving technology.

Block diagram of AD HIL system

In the scene simulation test of AD HIL, the main challenge faced lies in the real-time synchronization of multiple sensorsThis requires that the problems of obtaining a unified and precise timestamp and controlling the delay of the bus communication link must be solved. The sensor models of IPG CarMaker (including ideal, high fidelity and physical sensors) have built-in synchronous trigger mechanisms to ensure that all sensors sense the scene at the same time. The Kunyi AD HIL test system adopts the RTPC real-time timing as the trigger source and applies the PTP time synchronization technology. This design ensures the high synchronization of multi-sensor video injection, bus injection and the controller under test during the simulation process. The system strictly adheres to the board card inspection standards simultaneously, achieving high-precision lossless communication and comprehensively enhancing the overall synchronization performance.

In addition to meeting the authentication and verification requirements of the software application layer, this scheme provides an accurate security verification mechanism for the underlying software of domain control or perception algorithms, which is used to support the testing of diagnostic protocols or communication protocols:

• Support the integrated testing requirements of the vehicle's electronic and electrical systems;

• Support diversified reproduction of automated testing requirements;

• Support the data requirements for training a large number of algorithms.

SUMMARY - Conclusion

The simulation test solution jointly launched by VCARSYSTEM and IPG Automotive China has been adopted by several leading automotive enterprisesIt was successfully delivered and put into use by Tier 1 manufacturers.

In a certain automotive project, this solution builds a multi-dimensional virtual test environment, systematically covering extreme working conditions and long-tail scenarios. While enhancing the robustness of parking algorithms, it doubles the test efficiency - compared with the traditional real vehicle road test method, the comprehensive cost is reduced by 40% and the R&D cycle is shortened by 60%.

In another Tier 1 project, this solution conducts simulation verification through high-precision scene rendering and vehicle dynamics models, providing full life-cycle technical support for the iterative development of intelligent driving systems and accelerating the intelligent transformation process of the automotive industry.

In the future, with the improvement of the maturity of autonomous driving technology and the expansion of application scenarios,VCARSYSTEM and IPG Automotive China will continue to deepen their cooperation, focus on expanding the coverage of test scenarios, strengthen the collaborative verification capabilities of multi-domain controllers, and provide strong support for the development and testing of more autonomous driving systems. Lead the industry to develop in a more intelligent and efficient direction.