主办:陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊:1976年

汽车实用技术 ›› 2022, Vol. 47 ›› Issue (1): 61-64.DOI: 10.16638/j.cnki.1671-7988.2022.001.014

• 设计研究 • 上一篇    

一种域控制器片内及片外时间同步的方法

凤良山,李 俊   

  1. 上海创时汽车科技有限公司
  • 出版日期:2022-01-15 发布日期:2022-01-15
  • 通讯作者: 凤良山
  • 作者简介:凤良山(1988—),男,硕士研究生,就职于上海创 时汽车科技有限公司,主要从事智能驾驶及系统架构设计的研究 工作。

A Method for Time Synchronization between On-chip and Off-chip of Domain Controller

FENG Liangshan, LI Jun   

  1. SAIC TTTech Auto Technology Co., Ltd.
  • Online:2022-01-15 Published:2022-01-15
  • Contact: FENG Liangshan

摘要: 目前整车 E/E 架构由于面临来自不同控制器和传感器的数据交互需求而变得愈加复杂,所 需要解决的问题包括:功能复杂性,通信带宽,计算能力,灵活性,可拓展性等。其中域控制器 上层应用算法对获取数据的同步尤其敏感,数据融合需要针对同一时间点获取到的数据做融合处 理。因此,对域控制器内部的异构多核、外部控制器数据以及传感器数据时间同步的研究尤其重 要。基于此,文章详细介绍了域控制器片内及片外时间同步的方法,解决了域控制器内外部数据 时间不同步的技术缺陷。

关键词: 域控制器;数据融合;传感器数据;异构多核;时间同步

Abstract: At present, the E/E architecture of the whole vehicle is becoming more and more complex due to the data interaction requirements from different controllers and sensors. The problems to be solved include: functional complexity, communication bandwidth, computing capacity, flexibility, scalability, etc. The upper application algorithm of domain controller is particularly sensitive to the synchronization of data acquisition. Data fusion needs to be processed for the data obtained at the same time point. Therefore, it is particularly important to research the time synchronization of heterogeneous multi-core, external controller data and sensor data in domain controller. This paper introduces the method of time synchronization in and out of chip of domain controller in detail, and solves the technical defects of the time synchronization of internal and external data of domain controller.

Key words: Domain controller; Data fusion; Sensor data; Heterogeneous multi core; Time synchronization