전체 테스트 전략의 필수적인 부분인 HIL(Hardware-in-the-loop) 테스트 방법은 실제 시뮬레이션 환경에 내장된 실제 ECU의 재현 가능한 테스트를 가능하게 합니다. 이는 실험실에서 연중무휴 24시간 내내 종합적인 테스트를 제공하고 검증 시간을 단축하며 테스트 시나리오의 범위를 확장합니다. 또한 HIL을 사용하면 데이터 재생 테스트와 같은 개방 루프 테스트 설정뿐만 아니라 테스트 대상 장치 또는 폐쇄 루프 환경에 대한 안전 문제 없이 중요한 코너 케이스를 테스트할 수 있습니다. 고도로 연결된 E/E 아키텍처, 진화하는 전기차 및 ADAS/AD 능동 안전 시스템의 복잡성 증가로 인해 HIL 테스트는 전체 시스템의 신뢰성을 보장하는 데 중요합니다. dSPACE HIL 솔루션은 구성 요소부터 시스템 통합 테스트에 이르기까지 다양하며 자율 주행부터 배출가스 제로에 이르는 모든 차량 영역을 포괄합니다.
주요 이점
- 구성 요소부터 시스템 통합 테스트에 이르는 HIL 솔루션
- e-모빌리티 및 자율 주행을 포함한 모든 차량 영역
- 효율적인 자동화 테스트를 위한 엔드 투 엔드 도구 체인
- 컨설팅, 엔지니어링 및 교육을 위한 포괄적인 제안
- 광범위한 고객 프로젝트에 대한 수십 년간의 경험
Solution Offer at a Glance
- Scalable real-time platforms
- Support of latest automotive bus and network standards
- Comprehensive simulation models for applications ranging from combustion engines to autonomous vehicles and electric vehicles
- Complete and fully automatable software toolchain to support continuous integration among others
- High-fidelity solutions for e-mobility applications
- Realistic camera, lidar, and radar models can be calculated in real time with dSPACE HIL systems.
Deep Dive – Test Phases and Test Systems in HIL Simulations
The development of automotive electronic systems can be divided into three main test phases: function testing; ECU testing, including perception and fusion; and ECU domain and network testing. Since each test phase focuses on different goals, the test system requirements differ as well. The dSPACE HIL systems can be adapted to each phase to provide maximum support.
Function Testing
Function testing aims at testing single or few functions, including their interaction with ECU basic software. Since this kind of testing is typically an integral part of function development rather than final release testing, its focus lies on experimental usage, without systematic test automation. Hardware-in-the-loop (HIL) test systems for function testing therefore require versatile bus and network interfaces, restbus simulation on the behavior and protocol levels, or design-for-test interfaces (e.g., XCP). If you want to test functions for autonomous driving, the test system must be able to generate sensor data on the object list level. These types of tests are often performed by the function developers themselves. Therefore, the test systems must fit on a developer’s desk.
ECU Testing Including Perception and Fusion
Typical applications for ECU tests range from software integration testing over to fail-safe and fail-operational testing, to ECU release testing. For ADAS and AD ECUs, this can even include perception and fusion algorithms also have to be verified. Testing is therefore highly automated and based on ECU requirements to cover the high number of variants. Scenario-based testing is also useful to address the many test variants, particularly in combination with automatic scenario generation.
Test systems for ECU testing require scalable I/O and bus/network interfaces, restbus simulation on the behavior and protocol level, and extensive manipulation and test options for buses and networks. Scenarios for autonomous driving are often tested using raw sensor data. These tasks require comprehensive plant models and simulation performance that can be increased accordingly. Ideally, the test system functions can be adapted to changing project requirements.
ECU Domain and Network Testing
ECU domain and network testing is characterized by end-to-end testing of distributed functions. This includes fail-safe and fail-operational tests as well as vehicle network testing, such as sleep or wake-up tests. The systems often run highly automated test programs around the clock, made possible by comprehensive test management systems.
The need for an extensive range of I/O channels as well as bus and network interfaces is characteristic for these kinds of test systems. To handle complex models and scenarios, they also require strong simulation performance and multiprocessor capabilities. The systems process a multitude of plant models, from powertrain to air conditioning to window lifter models, to name but a few. To test systems for autonomous driving, sensor signals must be simulated on either the object list or raw data level, depending on the system architecture.
Components of a Hardware-in-the-Loop System
A typical HIL system for testing ECUs includes at least simulation hardware to connect the ECU to and simulation models for simulating the environment. Additionally, you use configuration software and visualization software for a graphically representation of the simulation scenario.
시작부터 끝까지 개발 지원
특히 자율 주행 시스템 영역에서 더욱 안전에 중요한 기능을 갖춘 복잡한 E/E 시스템 및 소프트웨어를 개발하면 기능 신뢰성 보장에 대한 문제가 제기됩니다. 그렇기 때문에 dSPACE는 초기 프로젝트 단계부터 승인에 이르기까지 고객을 지원하기 위해 복잡한 E/E 프로세스에서 기능 안전, 테스트 전략 개발, 검증 및 인증에 대한 엔드 투 엔드 전문 지식을 제공합니다.
dSPACE 시스템은 시작과 실행이 쉽습니다. 그러나 프로젝트가 더 복잡하거나 개별 솔루션이 필요하거나 개발 기간 제약이 심한 경우에는 dSPACE의 빠르고 유능하며 신뢰성 높은 엔지니어링 서비스를 믿어 보시기 바랍니다.
