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A Method for Layout of Motor Vehicle Exhaust Remote Measurement Equipment Based on Strong Similarity of Emission Sources

A technology for telemetry equipment and motor vehicles, which can be used in measurement devices, computer parts, traffic flow detection, etc., and can solve problems such as poor estimation but poor results.

Active Publication Date: 2020-04-03
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0004] Prior to the present invention, application number 201510214145.6 disclosed a method for selecting a base site for real-time remote sensing monitoring of motor vehicle exhaust on urban road networks. vehicles, this method focuses on the census of individual vehicle emission levels, but it is not effective in estimating the overall emission source strength of roads in the traffic network

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  • A Method for Layout of Motor Vehicle Exhaust Remote Measurement Equipment Based on Strong Similarity of Emission Sources
  • A Method for Layout of Motor Vehicle Exhaust Remote Measurement Equipment Based on Strong Similarity of Emission Sources
  • A Method for Layout of Motor Vehicle Exhaust Remote Measurement Equipment Based on Strong Similarity of Emission Sources

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[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below.

[0030] Such as figure 1 Shown, the present invention is specifically implemented as follows:

[0031] Due to the similarity of emission sources on the roads in the road network, it is necessary to determine which roads on the road network have similar emission sources and how similar they are. This degree of similarity is expressed by the correlation coefficient:

[0032]

[0033] Among them, ρ X，Y represents the road v i , v j The correlation coefficient between the intensity of emission sources, cov(X, Y) means the covariance of X, Y, and X, Y means the road v i , v j The array of emission source strengths, and Respectively represent the road v i and road v j The average value of the emission source intensity array, θ represents a positive integer from 1 to n, and n is the sample size.

[0...

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Abstract

The invention discloses a method for arranging points of motor vehicle exhaust telemetry equipment based on the strong similarity of emission sources. According to the k nearest neighbors of each road, find the roads that are k nearest neighbors; the roads that are k nearest neighbors are clustered together, and the clustering results are determined by using the breadth-first search method; from each cluster, select a road that meets the deployment telemetry The roads with equipment conditions are used as distribution roads, and the resulting collection of distribution roads is the final distribution scheme. The intensity of emission sources of roads without equipment can be calculated according to the unary linear relationship between them and the roads with equipment in the same cluster. The invention can effectively optimize the point setting of equipment in the motor vehicle exhaust remote measurement system, thereby minimizing the number of remote measurement equipment under the condition that all road emission sources of the whole road network are guaranteed to be available.

Description

technical field [0001] The invention relates to a method for arranging points of motor vehicle exhaust telemetry equipment in an urban road network, and belongs to the technical field of site selection of public facilities. Background technique [0002] With the development of my country's urbanization process, people's living standards have gradually improved, and residents' travel needs have increased significantly, resulting in a substantial increase in the number of motor vehicles in my country. While meeting people's travel needs, the air pollution caused by motor vehicles is also becoming more and more serious. Statistics show that motor vehicle exhaust emissions account for 50-80% of the total urban air pollution and have become one of the main sources of urban air pollution. Therefore, the control and treatment of motor vehicle exhaust emissions has become an important link in improving the air quality of cities in our country. In order to control motor vehicle exh...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/26G06K9/62G08G1/01G01N33/00
CPCG06Q50/26G08G1/0104G01N33/0004G06F18/23213
Inventor 康宇李泽瑞吕文君许镇义王雪峰
Owner UNIV OF SCI & TECH OF CHINA
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