Vehicle trajectory prediction and collision warning method based on high frequency and high precision positioning information

Abstract

The invention relates to a vehicle trajectory prediction and collision warning method based on high frequency and high precision positioning information. Real-time positioning information with the frequency of 5hz and the accuracy of centimeter level is collected by a vehicle-mounted positioning device. According to the information of vehicle position, speed and direction angle at multiple pointsin the adjacent time, a vehicle driving trajectory is fitted. The vehicle position is predicted at the target time. According to a contour conflict method, whether a vehicle has the risk of collisionwith a neighboring vehicle at the target time is judged if the vehicle still drives at the current speed and direction angle. Compared with a traditional method which carries out vehicle distance determining and collision warning through vehicle-mounted sensors, the method proposed by the invention can effectively avoid collision warning failure caused by high running speed of vehicles, bad weather, poor line of sight and other conditions, and has the advantages of simple algorithm, low cost and easy promotion.

Description

technical field [0001] The invention relates to the technical field of high-intelligence assisted driving of vehicles, in particular to a vehicle trajectory prediction and collision warning method based on high-frequency and high-precision positioning information. Background technique [0002] With the vigorous development of highway construction and the rapid expansion of car ownership, the traffic safety situation is facing unprecedented challenges. The traffic system is a complex system composed of people, vehicles, roads, and the environment, but among these four elements, "people" is the most important factor leading to road traffic accidents. According to the investigation and research on the causes of traffic accidents by Indiana University in the United States, 85% of traffic accidents are directly related to the driver himself and his behavioral characteristics. Another study shows that if the driver can perceive the danger 1 second in advance and take preventive m...

AI Technical Summary

Problems solved by technology

However, this type of method has the following disadvantages: First, all kinds of sensors have applicable conditions, such as high vehicle speed, bad weather such as rain and fog, poor line of sight conditions caused by small turning radius of the road, etc., will recognize the sensor The accuracy of the distance is affected; second, to achieve a more accurate distance judgment, it is necessary to install a variety of sensors to cooperate with each other, and the data fusion algorithm is complex, so the cost is too high and the promotion is difficult

However, based on this method for vehicle collision avoidance warning, there are few studies at home and abroad.

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