CAN bus line communication detecting method for aluminum cell control system

Abstract

The invention relates to a communication detection method, in particular to a CAN bus communication detection method of an aluminum electrolytic tank control system for judging fault points of the CAN bus communication of the aluminum electrolytic tank control system. The detection method of the present invention comprises the following steps: 1) writing the CAN bus communication detection program code into the memory of the detector; 2) incorporating the detector into the communication line; 3) judging the CAN bus communication state; 4) judging the CAN bus communication status is displayed through light emitting diode D1. The method of the present invention provides necessary detection means for CAN bus communication failures occurring in the harsh environment of strong magnetic field, high temperature and high dust concentration, and effectively solves the difficulty of judging and processing CAN bus communication failures of the slot control machine series on the aluminum electrolysis production site Big question. The invention is applicable to YFC-99 aluminum electrolysis intelligent fuzzy control machine, and also applicable to any control system with CAN bus as communication mode.

Description

technical field [0001] The invention relates to a communication detection method, in particular to a CAN bus communication detection method of an aluminum electrolytic tank control system for judging fault points of the CAN bus communication of the aluminum electrolytic tank control system. Background technique [0002] At present, the aluminum electrolysis control system using intelligent fuzzy control technology is mainly composed of industrial computer and fieldbus-based network (full distributed) intelligent tank control computer. The system uses the most advanced fieldbus - CAN bus. CAN bus (controller local network) is a serial communication network that effectively supports distributed control or real-time control. It is the carrier of data and information exchange between the industrial computer and the slot control computer, and the channel to realize intelligent fuzzy control. Once the CAN bus communication is interrupted, the industrial computer collects, organiz...

AI Technical Summary

Problems solved by technology

Once the CAN bus communication is interrupted, the industrial computer collects, organizes and displays the on-site data and control information of the slot control machine, makes and organizes related production reports, statistically analyzes the fault information of the slot control machine, and modifies various parameters of the slot control machine on site, etc. can not be carried out normally, which seriously affects the process control of electrolytic production

Practice has shown that the failure rate of CAN bus series communication is relatively high due to the large number of equipment nodes, relatively long communication distance, and the great influence of line impedance on temperature changes.

Due to the lack of necessary detection means for communication faults, it is difficult to judge and deal with faults. In serious cases, it will cause a long-term interruption of CAN communication inside and outside the tank control machine, causing the electrolytic cell to break away from the normal automatic control and monitoring environment, directly affecting electrolytic production and technical indicators. Completion and efficiency improvement

The CAN bus communication detection method of the aluminum electrolytic cell control system, which is applied to the maintenance of CAN bus series communication failures of the aluminum electrolytic cell control system, has not been recorded yet

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