基于AUTOSAR的车载固件无线更新系统，提升安全与效率。
Enhancing AUTOSAR-Based Firmware Over-the-Air Updates in the Automotive Industry with a Practical Implementation on a Steering System
- 采用AUTOSAR架构与增量更新技术，降低固件体积
- 集成UDS 0x27协议保障更新过程认证与数据完整
- 适用于汽车电子控制单元升级，尤其适合高级驾驶辅助系统
汽车工业日益依赖软件管理复杂功能，高效安全的固件更新至关重要。传统通过OBD接口的物理更新方式繁琐、成本高且耗时。固件无线更新（FOTA）技术提供革命性解决方案，实现无线更新，降低运营成本并提升用户体验。本项目设计并实现了一套面向现代车辆的先进FOTA系统，结合AUTOSAR架构以实现可扩展性与标准化，并采用增量更新技术减少固件大小，提升带宽效率并缩短烧录时间。为确保安全，系统集成UDS 0x27协议，用于更新过程中的身份认证与数据完整性校验。各电子控制单元（ECUs）间通信采用CAN协议，而ESP8266模块与主控ECU则通过SPI进行数据传输。系统包含引导加载程序、引导管理器及引导加载程序更新器等关键组件，支持无缝固件更新。通过闪烁LED和车道保持辅助（LKA）系统两个应用实例验证了系统的多功能性，展示其在关键汽车功能中的适用性。该项目代表了汽车技术的重要进展，提供以用户为中心、高效且安全的固件管理方案。
原文摘要 · Abstract (English)
The automotive industry is increasingly reliant on software to manage complex vehicle functionalities, making efficient and secure firmware updates essential. Traditional firmware update methods, requiring physical connections through On-Board Diagnostics (OBD) ports, are inconvenient, costly, and time-consuming. Firmware Over-the-Air (FOTA) technology offers a revolutionary solution by enabling wireless updates, reducing operational costs, and enhancing the user experience. This project aims to design and implement an advanced FOTA system tailored for modern vehicles, incorporating the AUTOSAR architecture for scalability and standardization, and utilizing delta updating to minimize firmware update sizes, thereby improving bandwidth efficiency and reducing flashing times. To ensure security, the system integrates the UDS 0x27 protocol for authentication and data integrity during the update process. Communication between Electronic Control Units (ECUs) is achieved using the CAN protocol, while the ESP8266 module and the master ECU communicate via SPI for data transfer. The system's architecture includes key components such as a bootloader, boot manager, and bootloader updater to facilitate seamless firmware updates. The functionality of the system is demonstrated through two applications: a blinking LED and a Lane Keeping Assist (LKA) system, showcasing its versatility in handling critical automotive features. This project represents a significant step forward in automotive technology, offering a user-centric, efficient, and secure solution for automotive firmware management.
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