The invention relates to a layout optimization method for roadside sensors in a vehicle-road cooperation system. The method comprises the following steps: defining a three-dimensional space roadside sensor shielding degree model; building a microscopic traffic simulation model; combining the three-dimensional space roadside sensor shielding degree model with the microscopic traffic simulation model to carry out a simulation experiment; extracting vehicle detection and tracking data from the simulation experiment to determine a performance evaluation index of the roadside sensor, and establishing a sensor performance regression model; and determining an optimal roadside sensor deployment scheme by solving the layout optimization model by taking a target road section roadside sensor performance evaluation index as a constraint condition and taking the lowest sensor network cost as a target function. Compared with the prior art, the method has the advantages that the dynamic inter-vehicle random shielding characteristic in the traffic flow is fully considered, the influence of the traffic flow state and sensor configuration on the performance of the roadside sensing system is considered, the roadside sensors can be accurately and reliably arranged and optimized, and meanwhile, the deployment cost of the roadside sensing system is effectively reduced.
本发明涉及一种车路协同系统中路侧传感器的布设优化方法,包括:定义三维空间路侧传感器遮挡度模型;搭建微观交通仿真模型;将三维空间路侧传感器遮挡度模型与微观交通仿真模型结合进行仿真实验;从仿真实验中提取出车辆检测与跟踪数据,以确定路侧传感器性能评价指标,建立传感器性能回归模型;以目标路段路侧传感器性能评价指标作为约束条件,以传感器网络成本最低作为目标函数,通过求解布设优化模型,确定出最优的路侧传感器部署方案。与现有技术相比,本发明充分考虑交通流中动态的车辆间随机遮挡特性,并考虑交通流状态与传感器配置对路侧感知系统性能的影响,能够准确可靠地对路侧传感器进行布设优化,同时有效降低路侧感知系统部署成本。
Layout optimization method for roadside sensors in vehicle-road cooperation system
一种车路协同系统中路侧传感器的布设优化方法
2022-10-21
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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