Critical driving condition analysis method and vehicle safety driving prompting system
An analysis method and vehicle technology, applied in the direction of road vehicle traffic control system, collision avoidance system, traffic control system, etc., can solve the problems of lack of quantitative analysis standards and basis, complex situation, etc., to avoid traffic accidents and ensure safety. Effect
Active Publication Date: 2021-10-22
TSINGHUA UNIV
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Problems solved by technology
At present, when encountering bad weather, road traffic management personnel often rely on experience to formulate management measures, lacking standards and basis for quantitative analysis
In the above cases, when two or more factors appear at the same time, the coupling between them will make the situation more complicated
Method used
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[0050] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention, and to fully convey the scope of the present invention to those skilled in the art.
[0051] The present invention provides an aspect of the present invention, such as figure 1 As shown, a critical driving condition analysis method based on road and weather conditions is provided, which includes:
[0052] S1. Carry out three-dimensional modeling of the road based on the slope and plane coordinates of the predetermined section of the road;
[0053]S2. Based on the local air pressure, temperature, wind speed, and vehicle size, d...
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The invention discloses a critical driving condition analysis method based on road and weather conditions. The method comprises the steps: conducting road three-dimensional modeling based on the gradient and plane coordinates of a preset road section of a road; determining the maximum wind power borne by the vehicle based on the local air pressure, temperature, wind speed and vehicle size; in the direction perpendicular to the vehicle traveling direction, constructing a vehicle traveling model of the relation among road information, vehicle information, the maximum wind power and the critical sideslip speed of the vehicle based on the critical state stress condition that the vehicle does not sideslip; in the direction parallel to the vehicle advancing direction, based on the vehicle stress condition, constructing a vehicle braking model of the road adhesion coefficient, the road slope, the curve elevation angle and the braking deceleration; according to the vehicle driving model and the vehicle braking model, outputting the vehicle driving speed, the safe vehicle weight, the vehicle safe size and / or the safe time headway. According to the invention, based on the road weather condition, feasible safe driving guidance can be given, and safety can be guaranteed.
Description
technical field [0001] The invention relates to the technical field of road traffic, in particular to a critical driving condition analysis method based on road and weather conditions and a vehicle safety driving prompt system. Background technique [0002] For a traffic road, complex road conditions such as curves and slopes, and severe weather conditions such as ice, snow, and strong winds will seriously affect the safe driving of vehicles. It is necessary to formulate corresponding vehicle and traffic control strategies according to specific conditions. At present, when encountering bad weather, road traffic management personnel often formulate management measures based on experience, lacking standards and basis for quantitative analysis. In the above situations, when two or more factors appear at the same time, the coupling between them will make the situation more complicated. Therefore, it is necessary to propose a road critical driving condition analysis method under...
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Login to View More IPC IPC(8): G08G1/01G08G1/16G08G1/0967B60W30/095
CPCG08G1/0104G08G1/0125G08G1/167G08G1/0967G08G1/096733B60W30/095
Inventor 李萌郭娅明张伟王世华闫慧敏马永锋
Owner TSINGHUA UNIV