Editor’s Note
In the development of electronic control systems for smart vehicles, functional safety verification faces significant challenges: traditional fault injection testing methods are inefficient, lengthy, and costly, and they struggle to comprehensively cover the various abnormal scenarios required by the ISO 26262 standard (such as ASIL D level). As the complexity of automotive electronic systems increases, key components like ECUs and autonomous driving domain controllers urgently require more efficient and precise safety verification solutions.
The FIT Fault Injection Testing Tool, jointly launched by IAE and SURESOFT, innovatively adopts a fully automated testing process and non-intrusive verification technology, perfectly addressing this industry challenge. This tool supports the simulation of over 50 typical faults, such as memory overflow and task deadlock, and can complete testing directly in environments like AUTOSAR OS and HIL simulation without modifying the code. Its unique real-time monitoring feature can accurately track key indicators such as watchdog responses and task state changes, and automatically generate visualized test reports.
Currently, the FIT tool has been successfully applied in several leading domestic automotive companies. Practical evidence shows that this tool can reduce the single test cycle by more than 50%, significantly lowering verification costs and helping clients efficiently meet ISO 26262 compliance requirements, providing a solid guarantee for the safe and reliable operation of intelligent driving systems.
FIT (Fault Injection Tester) is an automated fault injection testing tool designed for automotive electronics and industrial control, developed based on international safety standards such as ISO 26262. It aims to solve the problems of low efficiency, high costs, and difficulty in reproducing safety hazards in traditional testing. Its core functions include:
· Fully Automated Testing Process: Automatically generates test cases through a graphical interface, supports simulating 10 types of faults (such as memory overflow, task deadlock, stack overflow), and automatically executes monitoring and report generation;
· Non-Intrusive Verification: No need to modify code or hardware, directly inject faults into existing systems (such as AUTOSAR OS, HIL simulation environments), compatible with mainstream tools like TRACE32;
· In-Depth Safety Verification: Real-time monitoring of task scheduling, variable changes, and recovery mechanisms (such as watchdog responses), generating visual charts and Excel reports to ensure the effectiveness of safety functions;
· Cost-Effective and Efficient: Eliminates the costs of hardware setup and code modification, reduces the single test cycle by more than 50%, and supports parallel testing to enhance efficiency.
1. Low Testing Efficiency: Traditional manual defect injection testing relies on human operation, requiring repeated execution of the “test case writing → execution → monitoring → reporting” process, which is time-consuming and prone to errors;2. High Costs: Requires building hardware environments (such as HILS) for different testing scenarios, modifying target system code, or recompiling, leading to resource waste;3. Difficulty in Meeting Safety Standards: ISO 26262 (especially above ASIL B) requires comprehensive verification of safety mechanisms, but manual testing struggles to cover code-level defects (such as stack overflow, task interruption) and abnormal scenarios (such as deadlocks, resource conflicts);4. Uncontrollable Risks: Lack of automated monitoring tools makes it impossible to track the system recovery status in real-time after defect injection, potentially leading to hidden faults.
FIT is an automated defect injection tool based on functional safety standards, with core functions including:
1. Automated Testing Process: · Generates ISO 26262 compliant test cases through a graphical interface, supports 10 types of defect types (such as memory errors, deadlocks, stack overflows);· Automatically executes tests and monitors task scheduling status, variable changes, and recovery mechanisms, generating integrated reports (Overview Report + Raw Data + Graph);
2. Non-Intrusive Testing: · No need to modify code or rebuild the target system, directly inject defects in the existing environment (such as simulating sensor faults, communication interruptions);· Compatible with tools like TRACE32, supporting HILS and AUTOSAR OS environments;
3. High Coverage Verification: · Monitors task state changes (such as Task Kill, Stack Overflow) and the effectiveness of recovery mechanisms (such as Watchdog responses);· Supports real-time measurement of variables and state visualization (integrated view and detailed view switching).
<Figure 1> Creation of Software Fault Type Test Cases Based on Functional Safety Standards and AUTOSAR Standards
1. Automotive Controller Testing:
· Powertrain: Engine Control Unit (ECU), Transmission Control Module (TCU)
· Safety-Critical Systems: ABS, ESC, Battery Management System (BMS)
· Emerging Fields: Autonomous Driving Domain Controllers (must meet ASIL D level)2. Embedded System Verification: · Industrial controllers that must comply with ISO 26262 standards
· Simulation of abnormal scenarios for aerospace electronic devices3. Practical Cases: · Controller testing delivered to several leading domestic automotive companies
1. Efficient Automation: · Automatic generation and execution of test cases, reducing manual intervention, shortening the single test cycle by more than 50%, and improving testing efficiency by 100%· Supports parallel testing, enhancing laboratory utilization2. Deep Compatibility: · Seamless integration with AUTOSAR OS, TRACE32 debugging tools, and HILS platforms, adapting to mainstream development processes· No additional hardware investment required, reducing testing costs3. Comprehensive Safety Verification: · Simulates over 50 abnormal scenarios (such as memory leaks, resource preemption)· Automatically generates traceable test reports, meeting functional safety audit requirements
4. Risk Avoidance: · Early detection of potential faults (such as stack overflow leading to Task Kill), avoiding dangerous scenarios in real vehicle testing
<Figure 2> Advantages and Expected Effects of the FIT Fault Injection Testing Tool
1. Compliance Assurance: · Helps companies meet ISO 26262 standards, reducing the risk of recalls and legal liabilities due to safety defects2. Cost Savings: · Reduces hardware investment (no need for dedicated fault injection equipment) and testing cycles, shortening product time-to-market3. Quality Improvement: · Enhances system robustness through software-level defect verification, increasing user trust in the product4.Technological Leadership: · Promotes the upgrade of domestic controller development from “functional verification” to “safety verification”, supporting the implementation of intelligent driving and new energy technologies
IAE — Accelerating the Future
IAE Zhixing Zhongwei® is a professional service provider in the field of simulation testing for intelligent new energy vehicles. The company has developed a new type of solution that combines toolchains and data, starting from meeting common industry needs. The IAE X-In-Loop® simulation testing toolchain product, the Water and Wood Spirit Realm scenario data workshop, as well as software and safety evaluation services, have been widely used by hundreds of clients including domestic and foreign OEMs, component manufacturers, technology innovation companies, research institutes, third-party testing organizations, and various intelligent connected testing demonstration zones.
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