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On-line fault detection system based on CAN bus

A CAN bus and fault detection technology, applied in the field of fault real-time monitoring system devices, can solve problems such as restricting the application of field bus, and achieve the effect of simplifying hardware structure design, improving anti-interference ability, and avoiding paralysis

Inactive Publication Date: 2009-06-17
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
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Problems solved by technology

At the same time, there are many types of fieldbus standards, which restrict the application of fieldbus to some extent.

Method used

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  • On-line fault detection system based on CAN bus
  • On-line fault detection system based on CAN bus

Examples

Experimental program
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Embodiment Construction

[0020] The following provides a specific implementation of a CAN bus-based online fault detection system of the present invention.

[0021] Please see attached figure 1 and 2 , an online fault detection system based on CAN bus, including the human-machine interface of the upper computer, the intelligent module of the lower computer and the CAN bus; the upper computer is connected to the CAN bus through a CAN adapter card; the smart module of the lower computer is connected to the CAN bus through a CAN driver , the intelligent module of the lower computer includes an interface part, a motor control part, voltage, current, rotating speed, torque, vibration, temperature, etc., various signals and various signal acquisition parts; wherein,

[0022] The interface part includes the keyboard module and LCD liquid crystal module. The keyboard module scans the keyboard through the chip of the keyboard module and stores the key value in its key value register. The lower computer chip p...

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Abstract

The invention relates to an on-line fault detecting system based on CAN bus which includes a host computer human-computer interface part, a lower computer intelligent module part and CAN bus part; the host computer connects with bus through a CAN adapter, the lower computer connects with CAN bus through a CAN driver; a motor controller in a serve control part connects with the lower computer through a normal I / O port and D / A output module; various signal collecting part is divided into two signals for collecting, wherein, three-route simulation signal connects with A / D module of the lower computer through a sensor, one-route digital signal connects with a timer module directly through a grating encoder; the CAN bus part connects the whole system and answers for data transmitting work. The system has advantages of simplifying hardware structure design, improving resisting disturbance ability, ensuring real-time and reliability of system detecting and reducing cost.

Description

【Technical field】 [0001] The invention relates to a fault real-time monitoring system device of a large electric unit, in particular to an online fault detection system based on CAN bus. 【Background technique】 [0002] With the continuous development of modern enterprises, the application of large-scale units has become very extensive. Correspondingly, this has brought inconvenience to real-time fault detection to a certain extent. The implementation of fault alarm and related motor control to better detect each member of the unit has become the focus of people's attention. In the 1980s, the emergence of a new type of control system - Fieldbus Control System (FCS) brought people a solution to the problem, so we use the concept of fieldbus to realize the fault detection of large-scale units. Compared with the traditional control system, the fieldbus control system is a fully distributed, fully digital and fully open control system. As the connection link of intelligent devi...

Claims

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Application Information

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IPC IPC(8): G05B23/02
Inventor 易建军田小强赵少华袁野徐水元
Owner EAST CHINA UNIV OF SCI & TECH
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