Overview
The Driver Alert Light project focuses on developing a safety-critical lighting system for automotive applications. The system consists of a driver alert light control module that controls multiple LED actuator ECUs, each corresponding to smaller individual R, G, B, Y LED actuator ECUs. These components are connected via LIN.
The project adheres to ASIL A(C) compliance as per ISO 26262 standards, ensuring high safety and reliability in both hardware and software development.
Problem in Question
Modern automotive systems require highly reliable, safety-compliant warning lighting modules to enhance driver awareness and reduce accident risks. The key challenges in this project included:
- Ensuring ASIL C technical safety compliance for critical warning indicators.
- Developing a functional safety-compliant ECU with optimized hardware and software architecture.
- Conducting comprehensive system safety analysis (FMEA, FMEDA) and validation.
Solutions Implemented
Safety Management Activities
- Developed safety plans and DIA to ensure adherence to ASIL A(C) guidelines.
- Conducted Functional Safety Analysis, including Failure Mode and Effects Analysis (FMEA).
Technical Design & Implementation
- Designed the Variant 1 warning light module while maximizing functional reuse from Variant 2.
- Engineered the Master ECU as a carry-over component for Variant 1.
- Integrated ASIL C-compliant hardware and ASIL A-compliant software application.
- Implemented E2E protection according to ISO 26262 to ensure the integrity and safety of data transmitted through communication channels.
Software & Hardware Validation
- Performed Static Code Analysis using Polyspace to verify software reliability.
- Conducted Unit Testing with Tessy to ensure compliance with safety requirements.
- Implemented hardware and software FMEA and FMEDA for safety evaluation.
- Performed fault injection tests to validate the safety features of the ECU.
Key Results
The project successfully achieved ASIL A(C) compliance, ensuring a high level of safety and reliability in both hardware and software. By reusing existing designs, the team saved development time and costs while still meeting strict safety requirements. A thorough risk assessment and functional safety analysis strengthened system performance, while Polyspace for static code analysis and Tessy for unit testing helped verify software reliability. In the end, the warning light module met all required safety standards, striking a good balance between efficiency, affordability, and compliance.
Join us and explore the world of electronic control units
APAGCoSyst is a leading supplier of electronics for the automotive, medical, and industrial sectors. Our state-of-the-art, high-quality production is flexible and responsive, with products ranging from simple assembled PCBs to packaged and finished components. We specialize in designing and manufacturing electronic control units (ECUs), lighting, and electronic manufacturing services (EMS), as well as providing top-notch industrial automation services. We are driven to deliver excellence as a global partner for our customers. Join us and explore the world of electronic control units. To learn more about our services, please visit our website at www.apagcosyst.com. If you are interested in our services, please feel free to contact us via email at info@apagcosyst.com.