Field device control method and related assemblies

Abstract

The invention discloses a field device control method and related assemblies. According to the field device control method and related assemblies of the invention,a preset fault strategy is received in advance when an industrial system is powered on; whether a control station is normal or not is judged; if the control station is abnormal, a field device is controlled based on the preset fault strategy received in advance, and therefore, the field device is adjusted to be in a preset state, and faults of the field device can be avoided. Visibly, through the mode of receiving the preset fault strategy in advance in the method, after the control station is abnormal, the field device can still be set to be in the safe preset state, so that the abnormal action of the field device caused by the abnormity of the control station can be avoided, and safety accidents are avoided, and the working safety and reliability of the field device are further improved.

Description

technical field [0001] The invention relates to the field of industrial safety, in particular to a field device control method and related components. Background technique [0002] At present, the operation of field devices is controlled by the industrial system. Specifically, the industrial system includes a control station and an output device. The control station performs logic operations based on the feedback results from the industrial field, and outputs the calculated control data to the output device to Make the output device convert the control data (analog signal or digital signal) calculated by the control station into control instructions and send them to the field devices to realize the adjustment and control of the field devices. [0003] However, the control station may fail or shut down due to some reasons. At this time, the control station may output wrong control data, so that the field devices may receive wrong control instructions, resulting in abnormal op...

AI Technical Summary

Problems solved by technology

[0003] However, the control station may fail or shut down due to some reasons. At this time, the control station may output wrong control data, so that the field equipment may receive wrong control instructions, resulting in abnormal operation of the field equipment.

For example, when the control station is running normally, the control command received by the on-site valve is "1", indicating the state of opening the valve. At this time, the valve is open and the pressure value in the pipeline is normal; ” or other abnormal values ​​will cause the valve to close suddenly, causing a sudden increase in pipeline pressure and causing a safety accident

In summary, when the control station is abnormal, it is likely to cause abnormal operation of field equipment, which is very likely to cause safety accidents

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