公开(公告)号：US10800363B2

公开(公告)日：2020-10-13

申请号：US15707115

申请日：2017-09-18

Applicant: GM Global Technology Operations LLC

Inventor： Xinyu Du ,  Shengbing Jiang ,  Dongyi Zhou ,  David Gumpert ,  Atul Nagose ,  Rod Niner ,  Aaron D. Motyl

IPC: B60R16/03 ,  B60R21/01

Abstract: A system includes control modules, a low-voltage communications bus, e.g., a CAN bus of a vehicle, a voltage sensor that measures a bus voltage and outputs 2.5-3.5 VDC high-data and 1.5-2.5 VDC low-data, and a host electronic control unit (ECU). The host ECU detects a recoverable fault using a data pattern in the bus voltage data when the data is outside of a calibrated range, and recalibrates the sensor. Recalibration may be by adjustment to a scaling factor and/or a bias value. Non-recoverable “stuck-at-fault”-type or “out-of-range”-type faults may be detected using the pattern, as may be a ground offset fault. A method includes measuring the bus voltage using the sensor, comparing the output data to a range to detect the fault, and isolating a sensor fault as a recoverable fault using the data pattern when the data is outside of the range. The sensor is then be recalibrated.

公开(公告)号：US09678847B2

公开(公告)日：2017-06-13

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 ,  G06F11/07

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.

公开(公告)号：US09678131B2

公开(公告)日：2017-06-13

申请号：US14720414

申请日：2015-05-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shengbing Jiang ,  Xinyu Du ,  Atul Nagose

IPC: G01R31/04 ,  G01R31/02 ,  G01R31/00 ,  G06F11/30 ,  G06F11/34 ,  G06F11/07

CPC classification number: G01R31/025 ,  G01R31/006 ,  G06F11/0739 ,  G06F11/0793 ,  G06F11/3013 ,  G06F11/349

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 detection control routine for isolating faults on the CAN bus including measuring a CAN-H wire voltage, measuring a CAN-L wire voltage, and isolating a short fault based upon the CAN-H wire voltage and the CAN-L wire voltage.