Patent
Method and apparatus for open-wire fault detection and diagnosis in a controller area network
TLDR
In this article, a detection control routine for detecting the presence of wire-open fault on the CAN bus, including determining a CAN bus resistance, and determining a wire-Open Fault Detection System (WODDS) based on the determined CAN bus bus resistance and the terminator resistance values.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.read more
Citations
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Detection of ecu ground fault with can bus voltage measurements
TL;DR: In this paper, a method for detecting ground faults in a communications system is described, which includes measuring a predetermined number of voltage points, determining if the measured voltage points represent recessive or dominant bits, identifying which of the predetermined number represents inter-frame bits and which represent frame data bits, calculating a maximum average voltage for the interframe bits; calculating an average frame voltage for all dominant bits within a frame; determining a high average dominant voltage count based on a number of frames for which the average frame voltages are greater than a high voltage threshold; and determining if a ground
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TL;DR: In this paper, a CAN bus has a CAN-H wire, CAN-L wire, and a pair of CAN bus terminators located at opposite ends of the CAN bus.
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Checking device and checking method for full vehicle CAN bus error frame
TL;DR: In this article, a checking device and a checking method for a full vehicle CAN (Controller Area Network) bus error frame detection is presented, which relates to the field of fault detection.
References
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Patent
Controller area network condition monitoring and bus health on in-vehicle communications networks
TL;DR: In this paper, a method and system monitor a communications network, e.g., a controller area network (CAN), and more specifically, an in-vehicle communications network by maintaining a count of each type of error code and a histogram of all network messages seen by each of the controllers during a measurement period.
Patent
Fault location device, communication device, and fault location method
TL;DR: In this article, a fault location device detects a communication device connected to a broken communication line from among communication devices that carry out communications between each other through a two-wire communication line.
Patent
Fault tolerant output stage for digital two-conductor bus data communication system
TL;DR: In this paper, the authors propose a fault tolerant output stage for a digital two-conductor bus data communication system of the type having a transmission module and a reception stage which contains a bus signal intermediate processing module and an reception module connected downstream that conditions incoming bus signals for a data processing unit which is connected downstream.
Patent
CAN/LIN bus test circuit and CAN/LIN bus test apparatus
TL;DR: In this paper, a CAN/LIN bus test circuit and a bus test apparatus are described, and a test of corresponding functions is performed on the tested electronic control unit, and test output signals are output.
Patent
Electronic device, and open circuit detecting system, detecting method thereof
Chiu Jui-Jung,Li Yi-Kun +1 more
TL;DR: In this article, an open circuit detecting system configured to connect to an object circuit for getting an electrical signal through a virtual ground induced by characteristic impedance of a parasitic capacitor and determining whether the object circuit is open according to the electrical signal is presented.