Emergency stop event sequence recording system and setting method thereof

Abstract

The invention relates to an emergency stop event sequence recording system and a setting method thereof. The system comprises three sets of programmable logic controllers and an upper computer. A power supply module, a microprocessor module, more than one switching value input module, an input register, an output register, a switching value output module, a communication module and a jump relay are arranged in each set of programmable logic controller. A main module, a D register and a second counter are arranged in the microprocessor module in each set of programmable logic controller. A service interruption module and a logic operation module are arranged in the main module. The input signal of the switching value input module is stored in the input register for the logic operation module to carry out emergency stop logic operation. The operation result is stored in the output register in the microprocessor module and is sent to the jump relay through the switching value output module to be carried out by the jump relay. Data registered in the input register, output register and the D register in the microprocessor module are respectively transmitted with each communication module in the upper computer by each communication module through network. The emergency stop event sequence recording system and the setting method are widely applied to automatic control systems of various fields.

Description

technical field [0001] The invention relates to a parking system, in particular to an emergency parking event sequence recording system (SOE) and a setting method in the field of automatic control. Background technique [0002] At present, the production process automatic control systems of power stations and chemical enterprises are equipped with safety interlock emergency shutdown systems (ESD). At the safety level SIL2 and above, most of them adopt the triple redundant fault-tolerant control system of TRICON and Heima, that is, the two-out-of-three system, which is extremely reliable and can be used in the fields of nuclear power and aerospace technology. But this kind of system is very expensive, and there is no Sequence of Events Recording (SOE) system designed. It cannot realize the function of recording the sequence of events with a resolution of less than 1 millisecond, and cannot record the switching signals entering the safety interlock emergency stop system at hig...

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Problems solved by technology

But this kind of system is very expensive, and there is no Sequence of Events Recording (SOE) system designed. It cannot realize the function of recording the sequence of events with a resolution of less than 1 millisecond, and cannot record the switching signals entering the safety interlock emergency stop system at high speed. If In order to realize the event sequence recording function, it must be connected with the event sequence recording instrument to complete

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