Journal of Jilin University(Engineering and Technology Edition) ›› 2026, Vol. 56 ›› Issue (7): 1894-1903.doi: 10.13229/j.cnki.jdxbgxb.20241264

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Obstacle avoidance method for autonomous vehicles based on risk field in blind spot scenarios

Ning TONG1,2(),Ya-xing QIAO1,Jun-tong JIANG1,Li-zhi WANG1   

  1. 1.School of Railway Transportation Intelligent Engineering,Dalian Jiaotong University,Dalian 116028,China
    2.Dalian Key Laboratory of Blockchain Technology and Application,Dalian Jiaotong University,Dalian 116028,China
  • Received:2024-11-23 Online:2026-07-01 Published:2026-08-12

Abstract:

To address the safety hazards in driving blind spot scenarios, a collaborative obstacle avoidance planning algorithm for vehicles based on a collision risk field model was proposed. Considering the impact of vehicle-to-vehicle communication continuity, a communication continuity risk field model is constructed. This risk field was incorporated into the dynamic path planning algorithm, and an adaptive obstacle avoidance safety cost function based on the communication continuity impact factor was designed. Simulation results demonstrate that the proposed risk model-based obstacle avoidance planning algorithm can accurately reflect dynamic risks in driving blind spots, enhancing the safety of autonomous vehicles in extreme situations.

Key words: obstacle avoidance planning, autonomous driving, vehicle-to-vehicle communication, risk assessment, dynamic programming

CLC Number: 

  • U491.6

Fig.1

Obstacle avoidance planning algorithm framework diagram under driving blind spot"

Fig.2

Establishment of communication persistence impact factor"

Fig.3

Convex space creation in RMDP"

Table 1

Prescan parameter settings"

对象速度/(m·s-1加速度

动力学

模型

仿真频率/Hz

仿真

步长

V115可变Carsim201000
V2100Carsim201000
Q102020

Table 2

Risk field parameter setting"

参数数值描述
lmax/m30.451 1风险场影响最大范围
lmin/m5.330 6以车辆为中心的风险场边界
δ/m32.970 7跟车距离
M1/kg1 500产生风险场的重力
Smax/(m·s-155.56车道最大限速
a/m33.451 1椭圆的长半轴
b/m3.5椭圆的短半轴

Fig.4

Changes in V2V receiving end vehicles"

Fig.5

V2V receiving vehicle establishes the risk of hidden obstacles based on τt"

Fig.6

Vehicle DP and QP planning in EM and RMDP algorithm systems respectively"

Fig.7

Changes in various parameters of vehicles driving in EM and RMDP algorithm systems respectively"

Fig.8

Icle driving dynamics global risk field"

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