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System operation safety dynamic analysis method based on R-H point abrupt change

A technology of safe operation and analytical methods, applied in general control systems, control/adjustment systems, test/monitoring control systems, etc., can solve problems such as not taking mutation characteristics into account, and achieve the effect of improving accuracy and efficiency

Inactive Publication Date: 2018-05-22
CASCO SIGNAL
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  • Application Information

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Problems solved by technology

However, the existing quantitative system safety analysis methods do not take into account the mutation characteristics of the accidents they prevent

Method used

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  • System operation safety dynamic analysis method based on R-H point abrupt change
  • System operation safety dynamic analysis method based on R-H point abrupt change
  • System operation safety dynamic analysis method based on R-H point abrupt change

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specific Embodiment

[0079] The following uses the dynamic analysis method of system operation safety based on R-H mutation, combined with the scene of two high-speed trains colliding with each other in the Yongwen railway accident, to conduct a dynamic analysis of the system safety state change process of the high-speed train operation control system in this scenario, as a Typical implementation case.

[0080] Step 1: Define the control structure of the high-speed train operation control system and the system control process in the scenario of two high-speed trains colliding with each other. Such as Figure 4 As shown, the process of the rear-end collision scene of two high-speed trains is as follows:

[0081] 1) The power supply resistance wire of the TCC data acquisition unit was struck by lightning, which caused the data input function of the PIO (data output and input) board to lose power supply, resulting in the failure to update the collected data. TCC incorrectly controls track circuit c...

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Abstract

The invention relates to a system operation safety dynamic analysis method based on R-H point abrupt change. According to the method, in performing dynamic safety analysis of the control process of alarge-scale complicated system, a system control structure, and a key event, a fault and a safe gate which are required for Bow-tie model analysis are inputted. The processing procedure for the inputelement comprises the steps of converting a Bow-tie model analysis result to a fault degree and a protection degree which correspond with the system control process through calculation, further analyzing the continuous change state of the system safety state in the control process through constructing R-H abrupt change; and obtaining an output which is composed of a safe folded curved surface anda safe abrupt change curve. Compared with prior art, the system operation safety dynamic analysis method has advantages of supplying breakthrough technical support for online accident early-warning inan operation period of a large-scale complicated system, etc.

Description

technical field [0001] The invention relates to a dynamic analysis method for system operation safety, in particular to a dynamic analysis method for system operation safety based on R-H (Riemann-Hugo Neot) point mutation. Background technique [0002] Safety is the primary goal of large-scale and complex systems with safety requirements, such as high-speed train operation control systems. The current security state of the system can be regarded as the system has experienced the occurrence and accumulation of multiple events. Under the condition that the time measurement is sufficiently accurate, events must occur one after another, but not concurrently at the same time. Therefore, under the condition that the observation time scale is sufficiently accurate, during the system operation phase, with the progress of the system operation process, the overall security state of the system can show a continuous change trend relative to the operation time or other continuous variab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0232
Inventor 王阳鹏徐先良陈俊
Owner CASCO SIGNAL