A safety signal protection system and method

Abstract

A safety signal protection system and method. The system includes: a protective cover, a position transmission device for the protective cover, a DCS system, and a prompting device; When in the position, it is covered above the safety signal electrical terminal; the cover plate position transmission device is arranged near the protective cover or connected with the protective cover, and converts the detected position information of the protective cover into a position switch signal, and Send it to the DCS system through the signal cable; the DCS system receives the position switch signal, and sends the alarm signal to the prompting device through the signal cable or the industrial control network after processing; the prompting device performs voice or voice according to the preset rules after receiving the alarm signal. message notification. The safety signal electrical connection terminal of the present invention is provided with a protective cover plate, and when the protective cover plate is opened, an early warning is given to the safety signal operator, the operator on duty and the management personnel, so as to avoid accidents.

Description

technical field [0001] The invention relates to the technical field of safety assurance of industrial process systems, in particular to a safety signal protection system and method. Background technique [0002] At present, DCS systems are commonly used in industrial fields for industrial automation control. In particular, for energy, chemical and other enterprises that will affect social production and life, the on-site cabinets of the DCS system are often connected with a number of safety signal electrical terminals, and disconnecting or wiring such safety signal electrical terminals may cause major accidents or major economic losses. For example, in a power plant, each generating set has a steam turbine emergency blocking system. If the blocking signals such as high vibration of the steam turbine bearing bush and low pressure of the steam turbine lubricating oil are used, emergency braking will be performed when the steam turbine breaks through the safety bottom line, so...

AI Technical Summary

Problems solved by technology

Although companies and enterprises have employment training and related production safety licensing systems, the role of these training and systems is mainly reflected in pre-event education, restraint and post-event punishment. For the supervision of normal or abnormal operation of safety signals, it mainly relies on safety The professional ability and sense of responsibility of the signal operator lacks the necessary protection system to give early warning to the safety signal operator, operation watchman and management personnel when the safety signal operator performs the operation of disconnecting or wiring the safety signal electrical terminal , to avoid various human risk accidents in time

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