The invention relates to a method and system for estimating urban mobile source pollution emission by using incomplete information. The method comprises steps that a road section is divided into two types according to the data density obtained on the road section, specifically including an information missing road section lacking traffic mode information due to sparse collected data and an information complete road section with enough dense data; a continuous speed field and a deduced flow value are constructed for the information complete road section through the motor vehicle driving related data, and a corresponding traffic emission value is calculated through a microscopic emission factor model according to the continuous speed field and the deduced flow value; a graph convolution unit and a gating linear unit are used for respectively extracting topological characteristics of a road network and time sequence dependence of motor vehicle emission sequences on a road section with complete information, so emission sequences on a road section with information missing are reconstructed, and missing emission distribution information is filled up. According to the method, more traffic modes and emission distribution characteristics are mined by using less urban traffic data, and the urban road section level traffic pollution emission refined estimation task is realized.
本发明的一种利用不完全信息估计城市移动源污染排放方法及系统,包括根据路段上获得的数据密集程度,将路段分为2类:由于采集数据稀疏而缺失交通模式信息的信息缺失路段和数据足够密集的信息完全路段;通过上述机动车行驶相关数据对信息完全路段构造连续速度场和推断流量值,并以此通过微观排放因子模型计算相应的交通排放值;利用图卷积单元和门控线性单元分别提取路网的拓扑特征和信息完全路段上机动车排放序列的时序依赖性,从而重构信息缺失路段上的排放序列,填补缺失的排放分布信息。本发明利用较少的城市交通数据挖掘出更多的交通模式和排放分布特点,实现城市路段级的交通污染排放精细化估计任务。
Method and system for estimating urban mobile source pollution emission by using incomplete information
利用不完全信息估计城市移动源污染排放方法及系统
2022-02-11
Patent
Elektronische Ressource
Chinesisch
IPC: | G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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