公开(公告)号：US20150347258A1

公开(公告)日：2015-12-03

申请号：US14720332

申请日：2015-05-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： XINYU DU ,  SHENGBING JIANG ,  ATUL NAGOSE ,  YILU ZHANG ,  NATALIE ANN WIENCKOWSKI

IPC: G06F11/30 ,  G06F11/20

CPC classification number: G06F11/3013 ,  G06F11/0739 ,  G06F11/0751 ,  G06F11/2007 ,  G06F11/3027 ,  G06F11/3062

Abstract: A controller area network (CAN) includes a CAN bus having a CAN-H wire, a CAN-L wire, and a pair of CAN bus terminators located at opposite ends of the CAN bus. The CAN further includes a plurality of nodes including controllers wherein at least one of the controllers is a monitoring controller. The monitoring controller includes a CAN monitoring routine for detecting a wire short fault in the CAN bus and its location.

Abstract translation: 控制器局域网（CAN）包括具有CAN-H线，CAN-L线和位于CAN总线相对端的一对CAN总线终端的CAN总线。 CAN还包括多个节点，包括控制器，其中至少一个控制器是监控控制器。 监控控制器包括CAN监控程序，用于检测CAN总线中的短路故障及其位置。

公开(公告)号：US20180343262A1

公开(公告)日：2018-11-29

申请号：US15605658

申请日：2017-05-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： ANTHONY ANDERSON ,  JOSEPH E. PLOUCHA ,  KENNETH M. HROMADA ,  MICHAEL A. SOWA ,  NATALIE ANN WIENCKOWSKI

IPC: H04L29/06 ,  B60R16/023

CPC classification number: H04L63/102 ,  B60R16/0234 ,  B60R25/00 ,  G07C5/0808 ,  H04L63/0823 ,  H04L2012/40215 ,  H04W4/44 ,  H04W12/06

Abstract: A system for providing privileged access to an internal vehicle communication network is provided. The system includes a presentation network bus configured to provide listen-only access to a subset of in-vehicle networks, a security system configured to enable access to the presentation network bus by verifying access credentials, and a diagnostic service system configured to control access to the presentation network bus. The diagnostic service system is configured to receive a diagnostic service request after the access credentials have been verified to enable the presentation network busses for listen-only access to the subset of the in-vehicle networks. The presentation network busses may be enabled for the listen-only access after credential verification by the security system and in response to receipt of a diagnostic service request from the diagnostic service system requesting that the presentation network busses be enabled.

公开(公告)号：US20150346259A1

公开(公告)日：2015-12-03

申请号：US14720382

申请日：2015-05-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： SHENGBING JIANG ,  XINYU DU ,  NATALIE ANN WIENCKOWSKI

IPC: G01R31/02 ,  G06F11/34 ,  G01R31/00 ,  G06F11/30

CPC classification number: G01R31/025 ,  G01R31/006 ,  G01R31/026 ,  G06F11/3013 ,  G06F11/349 ,  H04L12/40006 ,  H04L43/0811 ,  H04L2012/40215

Abstract: A controller area network (CAN) includes a CAN bus with a CAN-H wire, a CAN-L wire, a pair of CAN bus terminators located at opposite ends of the CAN bus, each terminator having a corresponding known terminator resistance value, a plurality of nodes including controllers wherein at least one of said controllers is a monitoring controller. The monitoring controller includes a detection control routine for detecting the presence of a wire-open fault on the CAN bus, including determining a CAN bus resistance, and determining a wire-open fault on the CAN bus based upon the determined CAN bus resistance and the terminator resistance values.

Abstract translation: 控制器局域网（CAN）包括具有CAN-H线的CAN总线，CAN-L线，位于CAN总线两端的一对CAN总线终端，每个终端具有相应的已知终端电阻值， 多个节点包括控制器，其中至少一个所述控制器是监视控制器。 监控控制器包括检测控制程序，用于检测CAN总线上有线断开故障的存在，包括确定CAN总线电阻，以及根据所确定的CAN总线电阻和CAN总线电阻确定CAN总线上的有线开路故障， 终止电阻值。