| 汽车电子电器网络的全等双余度中央协调器 |
| 苗丰, 连小珉 |
| 清华大学 汽车工程系, 汽车安全与节能国家重点实验室, 智能型新能源汽车协同创新中心, 北京 100084 |
| Congruent duplex redundant central coordinators in automotive electric and electronic networks |
| MIAO Feng, LIAN Xiaomin |
| Collaborative Innovation Center of Intelligent New Energy Vehicle, State Key Laboratory of Automotive Safety and Energy, Department of Automotive Engineering, Tsinghua University, Beijing 100084, China |
摘要:
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| 摘要汽车电子电器网络中的中央协调器负责全车电器的协调控制。为了保证汽车电子电器系统的安全性，需要提高中央协调器的可靠度。该文提出了一种主控辅助的全等双余度方案。设置两个硬件、软件均完全相同的中央协调器，通过控制器区域网络（CAN）总线收发仲裁帧进行随机竞争，完成主控协调器和辅助协调器的角色划分；通过收发状态帧进行在线实时故障互监测，并在检测到中央协调器一次故障时完成任务接替和驾驶员预警。实验证明：该全等双余度中央协调器系统可以良好运转。全等双余度方法可以在不增加设计制造成本的条件下有效提高系统可靠度，延长系统平均寿命。 | |||
| 关键词 ：汽车电子电器网络,中央协调器,全等双余度系统 | |||
| Abstract：The central coordinators in automotive electric and electronic networks control all the electrical devices in the vehicle, so they need to be very reliable. This paper describes a congruent duplex redundant central coordinating system for automobiles. The two central coordinators are congruent in both their hardware and software. They communicate through the controller area network (CAN) bus, vote by sending and receiving arbitration frames, and monitor each other by sending and receiving status frames. They work as the master and assistant coordinators. When one of them fails, the other takes over the task and sends a warning message to the driver. Tests validate that the congruent duplex redundant central coordinating system can work well in vehicles. The congruent duplex redundant method improves the system reliability and mean life without design and manufacturing cost increases. | |||
| Key words：automotive electric and electronic networkcentral coordinatorcongruent duplex redundant system | |||
| 收稿日期: 2015-05-19 出版日期: 2016-10-25 | |||
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| 通讯作者:连小珉,教授,E-mail:lianxm@mail.tsinghua.edu.cnE-mail: lianxm@mail.tsinghua.edu.cn | |||
| 引用本文: |
| 苗丰, 连小珉. 汽车电子电器网络的全等双余度中央协调器[J]. 清华大学学报（自然科学版）, 2016, 56(10): 1091-1096. MIAO Feng, LIAN Xiaomin. Congruent duplex redundant central coordinators in automotive electric and electronic networks. Journal of Tsinghua University(Science and Technology), 2016, 56(10): 1091-1096. |
| 链接本文: |
| http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2016.22.044或 http://jst.tsinghuajournals.com/CN/Y2016/V56/I10/1091 |
图表:
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| 图１ 中央协调式汽车电子电器网络 |
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| 图２ 双中央协调器协同工作状态机 |
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| 表１ 双中央协调器协同工作状态跳变条件 |
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| 图３ 电子电器系统可靠度对比 |
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| 图４ 双中央协调器的仲裁 |
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| 表２ 双中央协调器仲裁状态跳变条件 |
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| 图５ 双中央协调器的互监测 |
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| 表３ 双余度中央协调器的故障检测与切换 |
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