汽车事件数据记录系统控制策略研究

Research on Control Strategy of Event Data Recording System

对车辆事故成因调查、事故还原的数据需求进行分析,整理出现有汽车事件数据记录系统应增加的16条事件数据,覆盖新能源、高级驾驶辅助系统及控制器自身信息。介绍汽车事件数据记录系统的组成与工作原理,并对控制策略按照系统初始化模块、功能主程序模块、数据读取模块、故障诊断模块4部分进行详细阐述。为满足事件数据提取方式的通用性要求,设计了功能+物理寻址的数据提取方式,并采用VIN校验方式保证数据提取权限的安全性保证。

The data requirement of vehicle accident investigation and accident recovery is analyzed. Sixteen event data that should be added to the event data recorder system are sorted out to cover the information of new energy,advanced driving assistant system and the controller. The composition and working principle of event data recorder system are introduced, and the control strategy is elaborated in detail based on four parts: system initialization module, main function program module, data reading module and fault diagnosis module. In order to meet the universal requirements of event data extraction method, a data extraction method of function and physical addressing is designed, and the security of data extraction authority is guaranteed by VIN verification.