Intelligent automatic-conversion speed limitation board and speed limitation method

Abstract

The invention provides an intelligent automatic-conversion speed limitation board and a speed limitation method. Currently, domestic road speed limitation boards are all fixed speed limitation boards arranged according to the road grades, and the limitation speed means a limitation speed under the normal meteorological condition. When weather is changed and the road vehicle travelling speed needs to be changed, displaying boards are arranged at an entrance of a highway for prompting generally. The intelligent automatic-conversion speed limitation board comprises an LED display (1), a solar cell panel (2), a rain falling sensor (3), a snow falling sensor (4) and a visibility sensor (5). The LED display (1) and the solar cell panel are fixed to a vertical column support (6) through fixtures, the vertical column support is connected with a rainfall holding board (8) and a visibility holding board (9) through clamps (7), and a snow falling sensor holding board (10) is arranged on the horizontal ground on one side of the vertical column support. The rain falling sensor and the snow falling sensor are placed on the rainfall holding board and the visibility holding board. The intelligent automatic-conversion speed limitation board and the speed limitation method are applied to speed limitation.

Description

Technical field: [0001] The invention relates to an intelligent and automatic speed limit board and a speed limit method. Background technique: [0002] At present, the speed limit signs on domestic highways are all fixed speed limit signs set according to the road grade. The speed limit refers to the speed limit under normal weather conditions. When the weather changes and the speed of road vehicles needs to be changed, there is generally a display panel prompt at the entrance of the expressway. However, when the vehicle is already running on the expressway, it is impossible to know the current speed limit. The speed limit prompted by the expressway management department is based on the data detected by the monitoring instrument installed at a fixed location, and the detection point does not represent the meteorological conditions of the entire road section. When the weather changes in some areas, the expressway management department cannot real-time It has been monitored ...

AI Technical Summary

Problems solved by technology

When the weather changes and the driving speed of road vehicles needs to be changed, there is usually a display board prompt at the entrance of the expressway. However, when the vehicle is already driving on the expressway, it is impossible to know the current speed limit

The speed limit prompted by the expressway management department is based on the data detected by the monitoring instrument installed at a fixed location, and the detection point does not represent the meteorological conditions of the entire road section. When the weather changes in some areas, the expressway management department cannot real-time It has been monitored that road vehicle drivers cannot intuitively feel (display) the magnitude of environmental changes when the road safety level drops in rain, snow, and fog, and continue to drive by feeling, which in turn causes a large number of traffic accidents. Traffic accidents caused by weather changes account for a large proportion.

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