Detection method of external faults of industrial control system
A technology of industrial control system and detection method, which is applied in the direction of electrical testing/monitoring, etc., can solve the problems of high cost and lack of comprehensive fault prediction function, and achieve the effect of easy operation, easy implementation, and guaranteed stability
Active Publication Date: 2014-12-10
河南华东工控技术有限公司
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Problems solved by technology
Traditional industrial control systems lack the predictive function for comprehensive faults or problems after external signal processing
And this often requires operation engineers or equipment maintenance personnel to spend a lot of energy to judge and deal with, so as to restore the normal operation of the equipment
Method used
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Embodiment 1
[0020] Step 2, the PLC programming software uses the converted state data information to make a logical judgment, and uses the logical judgment result as a condition for whether the software system issues a remote control command to drive the power equipment;
[0021] Step 3. After the equipment remote control command is issued, the PLC control unit monitors the status data information of the power equipment in real time, and judges the execution status of the remote control command. If the judgment result is that the remote control command has not been effectively executed, the low-voltage equipment is triggered to take protective actions , cancel the driving signal of the power equipment, and predict the cause of non-execution, and store the result of the prediction.
[0022] Step 4. The industrial control computer displays the status information stored in the PLC control unit with the help of the SCADA software platform, and the staff deal with the faults of the power equipm...
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The invention relates to the industrial control system fault self inspection field, in particular to a detection method of external faults of an industrial control system. The detection method of the external faults of the industrial control system includes steps: judging the external equipment faults of the industrial control system from software; processing collected status information of a power device; processing interlocking of related hardware devices according to conditions; adding necessary logical judgment on the collected status information and interlocking information; presenting the collected status information and the interlocking information on an industrial control computer; informing staff of existing reasons of the faults. The detection method of the external faults of the industrial control system improves stability, readability and completeness of a PLC (programmable logic controller) logic judgment module, judges the status information of the power device according to logic conditions, displays a judgment result on the industrial control computer in real time, informs the staff of information of the system faults, and thereby effectively guarantees running stability of the industrial control system, and is low in complexity and easy to implement.
Description
technical field [0001] The invention relates to the field of fault self-checking of industrial control systems, in particular to a detection method for external faults of industrial control systems. Background technique [0002] At present, with the continuous development of socialist industry, the development of industrial control is striding forward. The application of new knowledge, new technology and new equipment in the field of industrial control has brought great changes in the field of industrial control, and also put forward higher requirements for the level of industrial control. For a complete industrial control system, the current data acquisition and monitoring system puts forward new requirements in terms of aesthetics, readability, and humanization; the current logic control part, that is, the logic control part of PLC or DCS, requires stability, readability, and , Integrity puts forward new requirements. This is not only the development requirement in the f...
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IPC IPC(8): G05B23/02
Inventor 李永红孙肇伟段世良
Owner 河南华东工控技术有限公司