Cargo vehicle security state previous warning method based on braking distance

Abstract

The invention relates to a cargo vehicle security state early warning method based on braking distance, in particular to a determination method of the early warning threshold of the on-road vehicle. Aiming at the condition that the on-road vehicle is easy to have some potential dangers, the method of the invention uses the braking distance as the starting point to reflect the secure state of the vehicle. The real-time monitoring method of the on-road state of the vehicle comprises the following specific steps: extracting various factors of the vehicle such as the brake parameters, the current state factor and the outer road environment factor to perform information integration, using a braking distance model to calculate the required braking distance d1 of the current vehicle, comparing with a safe braking distance d0, calculating the degree of risk to determine the current danger condition of the vehicle, and using the range of the degree of risk as the early warning threshold of the vehicle to perform graded early warning. The invention has high instantaneity, precision and accuracy, does not require complicated calculation and design and provides a scientific and effective method for the determination of the danger condition threshold of the vehicle.

Description

Technical field: [0001] The invention relates to the field of comprehensive monitoring and early warning methods for automobile running safety status, in particular to a method for determining early warning thresholds of vehicles in transit. Vehicle in-transit early warning is easy to implement in terms of hardware technology, but how to determine the level of dangerous state and how to effectively warn has always been the focus and difficulty of research. The present invention starts from the angle of braking distance, comprehensively considers the change of the braking distance of the vehicle under the influence of various factors on the road, uses the rate of change between it and the safe braking distance to determine the degree of danger of the vehicle at the moment, and then according to the level of the degree of danger Then determine the early warning time, and take different early warning measures. Background technique: [0002] At present, there are often phenomen...

AI Technical Summary

Problems solved by technology

Mainly by processing the information collected by vehicles in transit, the braking distance d required for braking in the current state of the vehicle is obtained 1 , and calculate the safe braking distance d at the current speed 0 , use the formula of risk to determine the numerical value of risk, and determine the early warning level according to the range of risk, the present invention provides an effective method for determining the early warning threshold, which solves the problem of inaccurate early warning in the existing method

Images