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Evaluation and analysis method for causal mechanism of urban dust-haze and motor vehicle fuel

An analysis method and motor vehicle technology, applied in data processing applications, instruments, resources, etc., can solve problems such as statistical data uncertainty, difficulty in obtaining accurate probabilities of basic events, etc., and achieve the effect of improving reliability and practicability

Inactive Publication Date: 2018-10-23
DONGGUAN UNIV OF TECH
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Problems solved by technology

Nevertheless, obtaining precise probabilities for fundamental events is very difficult and associated statistics can have significant uncertainties

Method used

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  • Evaluation and analysis method for causal mechanism of urban dust-haze and motor vehicle fuel
  • Evaluation and analysis method for causal mechanism of urban dust-haze and motor vehicle fuel
  • Evaluation and analysis method for causal mechanism of urban dust-haze and motor vehicle fuel

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Embodiment Construction

[0037] The evaluation and analysis method of the causative mechanism of a kind of urban haze and motor vehicle fuel oil of the present invention, comprises following several steps:

[0038] Step 1, such as figure 1 As shown, by identifying and distinguishing the direct and potential causes of a large amount of motor vehicle fuel exhaust emissions, a fault tree evaluation system for "haze weather-excessive motor vehicle exhaust emissions" is constructed. Many basic risk events are developed and established in connection with the top event. In the fault tree evaluation and analysis system shown, the square represents the middle event or the top event. Through logic gate analysis, we can further understand the subordinate reasons of its occurrence, and the circle The shape represents the basic risk event, which is at the bottom of the fault tree and does not need to further analyze the cause of its occurrence. The logic gate or gate , which means that as long as one of several...

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Abstract

The invention discloses an evaluation and analysis method for the causal mechanism of urban dust-haze and motor vehicle fuel. The method comprises: firstly establishing an event tree evaluation systemof ''dust-haze weather-motor vehicle exhaust gas excessive emissions'' by identifying and distinguishing the direct and potential causes of a large amount of fuel tail gas emissions from motor vehicles, and then based on Boolean algebra, structural importance and fuzzy importance analysis, combining statistical data and expert scoring, fuzzifying the probability of occurrence of basic risk eventsby using the triangular fuzzy number, so as to qualitatively and quantitatively evaluate the contribution and impact of basic risk events on dust-haze weather. According to the invention, the probability of occurrence of basic risk events is fuzzified in a mode of combining statistical data and expert scoring, thereby further improving the reliability and practicability of the analysis result. The method can provide a set of scientific and effective new ideas and methods for the analysis of the causal mechanism of the urban dust-haze weather and motor vehicle fuel in China, and for the prevention and control and management of risk factors.

Description

technical field [0001] The invention relates to an evaluation and analysis method for the causal mechanism of urban haze and motor vehicle fuel based on an accident tree. Background technique [0002] In recent years, PM 2.5 The characteristic haze weather has become an extremely serious environmental pollution problem in many cities in China, which has serious adverse effects on air quality and human health. To carry out prevention and control of haze air pollution, it is first necessary to study the source and causative mechanism of air pollutants, so as to point out the direction and provide theoretical basis for the prevention and control work. The formation of haze is mainly the result of the combined effect of meteorological conditions and a large number of dust particles suspended in the air. It is generally believed that the dust particles suspended in the air mainly come from automobile exhaust emissions, coal combustion exhaust gas, industrial exhaust gas, flying ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0635G06Q50/265
Inventor 黄卫清范洪波
Owner DONGGUAN UNIV OF TECH
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