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Prediction method and prediction system for pavement ice formation early warning time
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A technology of early warning time and forecasting method, applied in forecasting, data processing applications, instruments, etc., to achieve the effect of solving technical problems, strong real-time performance, and accurate forecasting
Active Publication Date: 2014-11-05
CHINA ACAD OF TRANSPORTATION SCI +1
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However, there is no relevant report on the research on detecting whether ice condensation occurs on the road in advance, calculating the time when road ice condensation is about to occur, and providing reference for early automatic disposal of high-risk road sections.
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Embodiment 1
[0065] First, a road surface icing sensor and an information processing system are installed in the current road section, the road surface icing sensor is electrically connected to the information processing system, and the early warning temperature T is preset. 1 is 5°C;
[0067] Counting from the moment when the detection starts, at the 10th hour, the information processing system judges the detected first road surface temperature T 0 When less than or equal to 5°C, the first time t 1 It is the 10th hour, and the road surface ice sensor is activated for ice detection;
[0068] In the process of icing detection, it is judged whether the actual road icing temperature T at which icing may occur on the current road section is detected 3 , where T 3 -3.5°C;
[0069] At 6 minutes and 30 seconds in the 10th hour, the informa...
Embodiment 2
[0073] First, a road surface icing sensor and an information processing system are installed in the current road section, the road surface icing sensor is electrically connected to the information processing system, and the early warning temperature T is preset. 1 3°C;
[0074] Then, the road surface icing sensor detects the road surface temperature of the current road section as the first road surface temperature T 0 ;
[0075] Counting from the moment when the detection starts, at the 15th hour, the information processing system judges that the detected first road surface temperature T 0 When less than or equal to 3°C, the first time t 1 It is the 15th hour, and the road surface ice sensor is activated for ice detection;
[0076] In the process of icing detection, it is judged whether the actual road icing temperature T at which icing may occur on the current road section is detected 3 , where T 3 -4.6°C;
[0077] At 15 hours, 5 minutes and 40 seconds, the information ...
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Abstract
The invention relates to a prediction method and a prediction system for the pavement ice formation early warning time. The prediction method comprises the following steps that: a pavement ice formation sensor detects the road surface temperature of a current road section in real time; the pavement ice formation sensor carries out ice formation detection in the first time when detecting that the first road surface temperature is lower than or equal to the early warning temperature; the actual pavement ice formation temperature and the second road surface temperature are detected in the second time, and are uploaded to an information processingsystem; and the information processingsystem carries out calculation to obtain the early warning time. The method and the system have the characteristics that the early warning time of ice formation possibly occurring on the pavement can be precisely and dynamically predicted in real time, and the technical problem of pavement ice formation prediction on highway high-risk road sections can be effectively solved.
Description
technical field [0001] The invention relates to the field of early warning of icing on road surfaces, in particular to a method and system for predicting early warning time of icing on road surfaces. Background technique [0002] The road surface temperature of the expressway will decrease as the temperature drops. When the atmospheric precipitation and air humidity are too high, icing (black ice), frost, snow, ice and snow (including black ice) will form on the low-temperature road surface. Phenomenon. [0003] Different climatic conditions will cause different weather types. Ice and snow weather generally occurs under the background of atmospheric circulation that is conducive to precipitation. The cold air in the north meets the strong warm and humid air in the south in the process of going south, and a cold air wedge (cold pad) below 0°C will be formed in the near-surface layer of the atmosphere. A stronger temperature inversion occurs in the lower layer. When the temp...
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