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can bus analysis system with bus error analysis function

A CAN bus and bus error technology, applied in the field of automation technology and fault diagnosis, can solve problems such as real-time monitoring faults and real-time error analysis, and achieve the effect of compact structure and easy implementation.

Active Publication Date: 2016-04-27
ZHEJIANG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, there are few studies on real-time monitoring of network faults and real-time error analysis of faults

Method used

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  • can bus analysis system with bus error analysis function
  • can bus analysis system with bus error analysis function
  • can bus analysis system with bus error analysis function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] The operating frequency of the Open3S500EFPGA development board in the CAN bus analysis system with bus error analysis function is 50MHz; the P115 input / output port of the Open3S500EFPGA development board is connected to the 2 pins of RS232, and the P120 input / output port of the Open3S500EFPGA development board is connected to the first CAN The 3 pins of the transceiver CTM1050 are connected, and the P127 input / output port of the Open3S500EFPGA development board is connected with the 3 pins of the second CAN transceiver CTM1050. The 2 pins of the transceiver CTM1050 are grounded at the same time, the 1 pin is connected to the 5V positive voltage at the same time, the 7 pins are used to connect the CAN_L of the CAN bus, and the 6 pins are used to connect the CAN_H of the CAN bus, all grounds are the same; the RS232 serial port is used for Send data to the background computer.

[0025] The resistance value of the terminal resistors at both ends of the CAN bus is 120Ω, the...

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Abstract

The invention discloses a CAN bus analysis system with a bus error analysis function. According to the CAN bus analysis system with the bus error analysis function, a bus signal is detected to record normal frames and transmission time stamps on a bus; when an error occurs to the bus and an erroneous frame exists, a bus error signal is triggered, the erroneous frame and a time stamp on the bus are recorded, the erroneous frame and an interrupted frame are subjected to analytical analysis, the type of the erroneous frame and the address of an interrupted node are determined, and the recorded information is transmitted to a backstage for follow-up processing. Compared with the prior art, the CAN bus analysis system with the bus error analysis function has the advantages of being capable of recording the information of the normal frames and the erroneous frame, having the bus error analysis function, and being capable of conducting pattern recognition according to bus analog signals, acquiring the source address of the interrupted frame, and providing preliminary analysis for positioning a failure node.

Description

technical field [0001] The invention relates to the technical fields of automation technology and fault diagnosis, in particular to a CAN bus analysis system with a bus error analysis function. Background technique [0002] Fieldbus technology is an extension of computer digital communication technology to the field of industrial automation. Controller Area Network (ControlAreaNetwork, CAN) bus is one of the most widely used field buses in the world. It is widely used in many fields such as vehicle electronic microcontroller communication, industrial network automation control, important power system and security monitoring. [0003] As the complexity of the distributed network system architecture continues to increase, many factors such as aging equipment, strong action intensity of associated points, and strong electromagnetic interference in the operating environment in the actual industrialized network communication process are more likely to affect normal bus communica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/40
Inventor 雷勇汤龙浩袁勇
Owner ZHEJIANG UNIV
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