5 results about "Road traffic accident" patented technology

This invention discloses a road hazard warning system and method based on vehicle-road-cloud integration. The method includes the following steps: S1: Acquire data information affecting vehicle driving safety and vehicle information through edge cloud and regional cloud respectively, and upload them to the central cloud; S2: Perform perception fusion on the uploaded information through the central cloud and generate events; S3: Generate warning instructions based on the events and send them to the connected vehicle. The connected vehicle provides warnings to the driver through the HMI interface and HUD interface. This invention can improve the accuracy of hazard warnings and system reliability, reduce R&D, maintenance, and traffic operation costs, reduce road traffic accidents, and improve traffic management.

This application discloses a method, system, electronic device, and storage medium for generating teaching case scripts for road traffic accidents. The method includes: acquiring road traffic accident investigation report text, parsing the text, and extracting structured accident element information; based on the structured accident element information, using a preset typicality assessment model to evaluate the teaching value of accident cases, obtaining a typicality score, and selecting cases with scores higher than a preset threshold; based on an accident causal chain theory model, classifying the causal elements in the accident element information into multi-level causal chains, conducting in-depth causal analysis, and generating a visualized accident causal map; extracting related driving knowledge points and skills to generate corresponding accident prevention measure texts; and automatically generating structured teaching case scripts using a natural language generation engine. This application helps students fully understand the mechanism of accident occurrence, establish risk awareness, and improve safe driving awareness.

The present invention relates to an accident notification drone and an accident notification system using the same, and more specifically, to an accident notification drone and an accident notification system using the same that can prevent secondary accidents by being dispatched to the scene of a traffic accident on a road and issuing a warning, and actively prevent secondary accidents by hovering near the accident site and issuing a warning without power. The present invention may include a drone body having a built-in battery and a rotor, a warning display unit provided on the drone body to perform a warning, a flight maintenance unit provided on the drone body to maintain flight of the drone body, and a control unit that controls the drone body, the warning display unit, and the flight maintenance unit.

This invention discloses a method for digital reconstruction of road traffic accidents, comprising: S1, performing aerial photography and point cloud scanning of the accident scene to obtain aerial images and point cloud data; S2, preprocessing the aerial images; S3, performing panoramic segmentation of the aerial images using a panoramic segmentation model of the traffic accident scene to extract the masks, types, and numbers of traffic participants; S4, projecting the masks onto the three-dimensional coordinate system of the point cloud data to calculate the relative spatial positions of the traffic participants; S5, combining information on road traffic flow, traffic signal control, and road channelization design from a vehicle-road cooperative system to obtain the operating status information of intelligent vehicles; S6, establishing a mathematical model of the accident collision in traffic accident collision simulation software, performing simulation optimization until the simulated distance after the collision of the vehicles in the accident meets the requirements, thus completing the reconstruction of the road traffic accident. This invention effectively reconstructs the process of a road traffic accident, providing a reliable basis for liability determination.

This utility model relates to the field of forensic identification of physical evidence from road traffic accidents, specifically to a video inter-frame time interval verification device, comprising: a housing with an LED installation area on the front; LED groups installed in the installation area according to functional partitions, including: a first LED area with a first group of LEDs connected to a first control signal; a second LED area with a second group of LEDs connected to a second control signal; a third LED area with a third group of LEDs connected to a third control signal; and a controller outputting the first, second, and third control signals. This utility model uses a controllable LED flashing sequence as a high-precision time reference and generates quantifiable time markers through video capture, achieving accurate verification of inter-frame time intervals.