Dynamic security risk assessment method of rail transit line

An evaluation method and technology of safety risk, applied in the field of dynamic safety evaluation of rail transit lines

Active Publication Date: 2014-12-17
BEIJING JIAOTONG UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the existing researches are all based on type-one fuzzy numbers, and the rail transit system is composed of multiple complex subsystems. Type-two fuzzy numbers are more advantageous in dealing with the uncertainty and complexity of rail transit lines

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  • Dynamic security risk assessment method of rail transit line
  • Dynamic security risk assessment method of rail transit line
  • Dynamic security risk assessment method of rail transit line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0305] Taking a certain moment in a certain urban rail transit network as an example to calculate, the index system is as follows: figure 1 shown. Table 1 gives the weights of the linguistic variables and the corresponding Type II fuzzy sets.

[0306] Table 1 Weighted linguistic variables and corresponding Type II fuzzy numbers

[0307] Linguistic variables Type II fuzzy number Very Unimportant (VU) ((0,0,1.15)(0,0,4.61);0.7,1) Unimportant (U) ((2.79,2.31,3.71)(0.42,3.13,5.41);0.7,1) Medium (M) ((2.79,3.34,3.67)(1.59,3.55,6.26);0.7,1) Important (I) ((6.29,6.67,7.17)(4.59,6.58,9.5);0.7,1) Very Important (VI) ((9.3,10,10)(6.37,10,10);0.7,1)

[0308] In order to obtain the real-time security status of a certain line at a certain moment, data acquisition equipment is deployed on site, and the calculation results of each index value at a certain moment are shown in Table 2.

[0309] Table 2 Values ​​of each indicator at a certain mom...

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Abstract

The invention provides a dynamic security risk assessment method of a rail transit line. The dynamic security risk assessment method comprises the steps of firstly, determining a dynamic index system for dynamic security risk assessment of the rail transit line, secondly, calculating various dynamic index values according to data acquired by the devices of the station in real time, and finally, performing dynamic assessment on the operation security risks of the rail transit line by use of a new method of interval type-2 fuzzy numbers in combination with TOPSIS; as a result, the real-time security statuses of the operation of the rail transit line can be controlled more accurately, and technical support is provided for the related administrative staff to make decisions; the dynamic security risk assessment method has very important practical significance for improving the quality of decision-making.

Description

technical field [0001] The invention relates to a rail transit line safety evaluation method, in particular to a rail transit line dynamic safety evaluation method. Background technique [0002] In the existing subway safety index system research, the research on the rail transit line safety evaluation index system is not perfect, and the rail transit line safety evaluation should be considered from the aspects of human, machine, environment and management. In order to fully integrate the establishment of the index system with on-site business, conduct in-depth research and analysis on typical metropolitan rail transit, summarize the main factors affecting operation safety, extract and condense the elements of operation safety, and build a "micro-intermediate" view of urban rail transit operation safety. Perspective-macro" evaluation index system. Most of the existing safety evaluation studies use static indicators, which do not consider the influence of factors such as env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/00
Inventor 贾利民秦勇晋君李曼张振宇王艳辉孙方梁平
Owner BEIJING JIAOTONG UNIV
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