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Method and device for quantifying time and space coverage of road weather information system

A technology of weather information and coverage, which is applied in the field of traffic information, can solve the problems of lack of quantitative methods for spatio-temporal coverage, and achieve the effect of accurate spatio-temporal variogram model and improved accuracy

Active Publication Date: 2018-11-30
SHANDONG UNIV
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Problems solved by technology

However, most of the existing studies use empirical methods to expand the network of road weather information systems, and there is still a lack of quantitative methods for temporal and spatial coverage.

Method used

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  • Method and device for quantifying time and space coverage of road weather information system
  • Method and device for quantifying time and space coverage of road weather information system
  • Method and device for quantifying time and space coverage of road weather information system

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Embodiment Construction

[0057] It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0058] It should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and / or combinations thereof.

[0059] figure 1 It is a flow chart of a method for quantifying time...

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Abstract

The invention discloses a method and device for quantifying the time and space coverage of a road weather information system. The method includes the following steps: grouping and numbering weather information sensors, storing road weather data collected by the weather information sensors grouped and numbered in corresponding groups to construct a road weather information system database; performing data diagnosis on the data in the road weather information system to remove invalid and erroneous data; utilizing the data subjected to quality diagnosis and adopting an empirical variation function to construct and fit at least two types of time and space variation function models to obtain fitted model parameters and goodness of fit; selecting the optimal fitting model by comparing the goodness of fit of all the time and space variation function models constructed to determine the time and space coverage of the road weather data. By means of the method and device, the time and space coverage of the road weather information system is quantified and visualized, and the interaction of time and space factors is considered.

Description

Technical field [0001] The invention belongs to the field of traffic information, and in particular relates to a method and device for quantifying the time and space coverage of a road weather information system. Background technique [0002] Road weather affects traffic conditions. According to statistics, about 22% of road accidents and 25% of trip delays are related to bad weather. Bad weather will not only worsen road conditions, but also seriously affect the driving behavior of drivers. The special geographical conditions of the road make the weather on the roads changeable, and it is easy to produce short-term or long-term special weather conditions such as rain, snow, fog, etc., which are difficult to obtain through the forecast of the meteorological department. Therefore, it is necessary to collect and process road weather conditions in time, establish a corresponding information system, and use quantitative methods to study the time and space coverage of road weather in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 王旭牛磊李江晨张璨
Owner SHANDONG UNIV
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