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Urban dynamic risk index assessment method based on fuzzy analytic hierarchy process

A fuzzy analysis hierarchy process and dynamic risk technology, applied in the field of urban risk management, can solve the problem of not proposing a risk assessment system and risk assessment standards.

Pending Publication Date: 2021-10-19
苏州市冠伽安全科技有限责任公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the research on urban risk assessment is still in the exploratory stage. Some cities have actively practiced risk assessment, but they have not proposed a mature risk assessment system and risk assessment standards.

Method used

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  • Urban dynamic risk index assessment method based on fuzzy analytic hierarchy process
  • Urban dynamic risk index assessment method based on fuzzy analytic hierarchy process
  • Urban dynamic risk index assessment method based on fuzzy analytic hierarchy process

Examples

Experimental program
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Effect test

Embodiment

[0056] Embodiment: a kind of city dynamic risk index assessment method based on fuzzy hierarchy process, comprises the following steps:

[0057] Step 1. Analyze the influencing factors of urban risk, establish an evaluation index system, set quantitative standards for the indicators, and determine the index set and evaluation set;

[0058] The risk factors of cities can be roughly divided into four categories, namely human unsafe factors, material unsafe factors, environmental unsafe factors and management unsafe factors. We select three types of quantifiable indicators from the above qualitative risk factors, which are the number of alarms, the number of hidden dangers, and the number of accidents, and then quantify the indicators through the detection method of data collection devices (such as sensor sensing, camera capture, etc.) and Get the actual value of each index after quantification, and finally set the quantitative standard, and then determine the evaluation set, tha...

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Abstract

The invention discloses an urban dynamic risk index assessment method based on fuzzy analytic hierarchy process, the algorithm relates to the field of operational research subject and the field of urban risk management, and the method comprises the following steps: 1, analyzing urban risk influence factors, establishing an evaluation index system, setting a quantitative standard for the index, establishing an evaluation result, and determining an index set and an evaluation set; 2, grading indexes according to corresponding time dimensions, and forming an evaluation matrix; 3, establishing an evaluation quantitative grading standard; 4, establishing a hierarchical structure model; 5, establishing a fuzzy judgment matrix; 6, solving the weight of the judgment matrix, and carrying out consistency check to calculate a random consistency proportion; 7, calculating an evaluation vector of each index of each level and normalizing the evaluation vector; 8, calculating an evaluation grade. According to the method, a fuzzy analytic hierarchy process and a fuzzy comprehensive evaluation method are combined, and the occurrence frequency of hidden dangers is quantified through a sensor, so a dynamic risk index is obtained.

Description

technical field [0001] The invention aims at assessing urban risks and belongs to the field of urban risk management, and the algorithm content relates to the technical fields of operational research disciplines such as analytic hierarchy process and fuzzy comprehensive evaluation method. Background technique [0002] The level of urban industrialization and modernization in our country is getting higher and higher, the urban population, function and scale are constantly expanding, and the urban social system is becoming more and more complex. These characteristics lead to the rapid increase in the uncertainty and complexity of urban accidents, the degree of risk continues to expand, and the overall urban risk presents the characteristics of density, chain, superposition and regionality. [0003] In recent years, particularly serious accidents in cities have occurred frequently. It has caused huge losses and adverse effects to the safety of people's lives and property, refl...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0635G06Q10/06393G06Q50/26
Inventor 冯高鹏陆冠峰
Owner 苏州市冠伽安全科技有限责任公司
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