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A dynamic safety risk assessment method for rail transit stations

A risk assessment, dynamic security technology, applied in the field of security risk assessment

Inactive Publication Date: 2017-04-26
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing studies are all based on type I fuzzy numbers, and the rail transit station system is composed of multiple complex subsystems. Type II fuzzy numbers are more advantageous in dealing with the uncertainty and complexity of rail transit stations

Method used

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  • A dynamic safety risk assessment method for rail transit stations
  • A dynamic safety risk assessment method for rail transit stations
  • A dynamic safety risk assessment method for rail transit stations

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0233] Taking a certain moment in a certain city rail transit station 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.

[0234] Table 1 Weighted linguistic variables and corresponding Type II fuzzy numbers

[0235] 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)

[0236] In order to obtain the real-time security status of a certain station 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.

[0237] Table 2 Values ​​of each indicator at a certain m...

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Abstract

The invention provides a dynamic security risk assessment method of a rail transit station. 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 station, 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 station 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 station 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 safety risk evaluation method, in particular to a dynamic safety risk evaluation method for rail transit stations. Background technique [0002] In the existing subway safety index system research, the research on the rail transit station safety evaluation index system is not perfect, and the rail transit station 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/30
CPCY02P90/84
Inventor 秦勇贾利民张振宇李曼晋君谢征宇王艳辉梁平孙方战明辉
Owner BEIJING JIAOTONG UNIV
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