Low-speed complex intersection unmanned vehicle control method, control system and unmanned vehicle

By combining multiple stopping points generated at low-speed complex intersections with real-time traffic light status, a parking strategy was developed to solve the safety problem of unmanned vehicles crossing intersections in low-speed scenarios, enabling safe parking and passage at low-speed complex intersections.

CN116300868BActive Publication Date: 2026-06-19JIUZHI (SUZHOU) INTELLIGENT TECH CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIUZHI (SUZHOU) INTELLIGENT TECH CO LTD
Filing Date
2022-12-30
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing technologies cannot effectively identify the countdown time of green lights in the control of autonomous vehicles at low-speed, complex intersections, resulting in safety risks for autonomous vehicles when crossing intersections at low speeds.

Method used

By pre-calculating and generating three stopping points, and combining the real-time traffic light status and the unmanned vehicle speed management module, the unmanned vehicle is controlled to accurately stop or pass through the intersection under different conditions, including the parking strategies for the first, second, and third stopping points. The stopping distance is calculated using the formula S=v1*(t1+t2)+0.5*v2*t12, taking into account safety islands and obstacles, and adjusting the navigation path to avoid obstacles.

Benefits of technology

It ensures the safety and reliability of unmanned vehicles at low-speed, complex intersections, ensuring that they can find a safe place to stop when the traffic lights change, thus reducing the risk of crossing intersections.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116300868B_ABST
    Figure CN116300868B_ABST
Patent Text Reader

Abstract

This invention relates to a method, control system, and unmanned vehicle (UAV) control system for low-speed complex intersections. The method includes: pre-calculating and generating three stopping points based on the UAV's navigation path; acquiring the traffic light status of the nearest intersection to the UAV and transmitting the information back to the UAV; the UAV speed management module calculating the stopping distance to the first stopping point and accurately stopping the vehicle; if the UAV cannot stop before the first stopping point, it decelerates at maximum deceleration, and after passing the first stopping point, a second stopping point is generated; if it is determined that the UAV cannot stop at the second stopping point, it is ignored, and the vehicle proceeds through the intersection at normal speed; after passing the second stopping point, a third stopping point is generated; if it is determined that the UAV can stably stop before the third stopping point, it stops, and the third stopping point takes effect; otherwise, the third stopping point is ignored, and the vehicle proceeds through the intersection at normal speed. The stopping distance is calculated using the following formula: S = v1*(t1+t2) + 0.5*v2*t1 2 v1 is the normal speed of the autonomous vehicle, t1 is the time required to stop, t2 is the control system lag time, and v2 is the maximum deceleration.
Need to check novelty before this filing date? Find Prior Art