Bidirectional pedestrian flow simulation method and system with collision avoidance mechanism

Abstract

The invention relates to a bidirectional pedestrian flow simulation method and system with a collision avoidance mechanism. The method includes the steps that a first group and a second group which pass through each other are initialized; the first group and the second group are divided into social structures composed of several groups; all individuals of the first group and the second group are calculated through a social force model, and the vector speed and displacement of each individual are updated; when the relative position between any team in the first group and any team in the second group is located in a collision range, any one of the two teams implements a collision avoidance measure, the motion parameter is changed, and individuals in the team implementing the collision avoidance measure are driven to update the vector speed and displacement. The collision avoidance mechanism is added in an original social force model, bidirectional pedestrian flow can avoid collision in advance by using the groups and the teams as units when converging together, a plenty of risks of frictional collision when the pedestrian flow converges together are avoided, and at the same time, the self-organization phenomenon of layering in the bidirectional pedestrian flow is showed again.

Description

A two-way pedestrian flow simulation method and system with an avoidance mechanism technical field The invention belongs to the field of crowd evacuation simulation, and in particular relates to a bidirectional pedestrian flow simulation method and system with an avoidance mechanism. Background technique In recent years, with the rapid growth of population, the number of large public places has increased, and the phenomenon of pedestrian flow, especially two-way pedestrian flow, can be seen everywhere. There is a distinctive self-organization phenomenon when individuals meet, and safety issues such as crowding and friction have attracted more and more attention. In densely populated places, the congestion of pedestrian traffic brings great inconvenience to people's travel, and the time of travel delay brings certain losses to the social economy and residents' lives. The development of traditional evacuation drills has the problems of high difficulty and low effectiveness....

AI Technical Summary

Problems solved by technology

The social force model is a well-known microscopic model, but the original social force model equalizes individuals, making it difficult to simulate real pedestrian flow evacuation

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