Research On The Collaborative Control Of Urban Rail Vehicles Based On The Layered Distributed Control Model Of The Internet Of Things

With the increasingly high degree of urbanization in China,a large number of people have gathered in cities.With the expansion of urban area and the emergence of super large urban circle,the demand of citizens for efficient,convenient and safe public travel mode is increasing.In this context,in order to meet people's daily travel needs,China has entered the peak period of urban rail transit development and construction.However,with the increase of population,the transportation pressure of urban rail vehicle transportation system is becoming more and more big.The following morning peak and evening peak,as well as the passenger flow trough between the two peaks,make the urban rail vehicle transportation system face a more complex transportation environment.How to deal with the different transportation pressure in peak period and low peak period has become a problem that the existing urban rail vehicle control system must face.Based on the above situation,through the analysis of urban rail train network transport pressure in different time periods,and according to the analysis results,it is of great significance to study the corresponding operation parameter adjustment of the whole urban rail train control system Righteousness.Based on the stop time model,mechanical model,comfort model and hierarchical distributed control system model,this paper mainly studies the operation mode adjustment of urban rail train under different passenger flow conditions.First of all,based on the operation environment of the existing urban rail train network,under the condition of keeping the scale of urban rail vehicle fleet unchanged,the flexible response of urban rail train operation system to different operation conditions is realized.Based on the field investigation of urban rail vehicle transportation network,it is found that urban rail vehicles are faced with two opposite transportation environments,namely,the peak transportation environment characterized by large passenger flow,high intensity,large concentration of passenger flow in a short time and slow boarding and alighting,and the low peak transportation environment characterized by small passenger flow,low intensity,continuous but scattered passenger flow and rapid boarding and alighting.In order to deal with these two different transportation environments,the design idea of hierarchical distributed system under the Internet of things environment is used to design the existing urban rail train control system.By dividing the time zone,setting up subsystems in the current time domain,the hierarchical distribution of the whole urban rail vehicle control system is realized.In addition,the hierarchical and distributed urban rail vehicle control system based on the Internet of things is studied to ensure the safety of different urban rail vehicles and prevent collision.Secondly,the parameters of urban rail vehicles in different transportation environment are analyzed,and the mathematical model is established based on this.Through the analysis of the operation environment of urban rail vehicles,the stop time model,mechanical model,comfort model and hierarchical distributed control system model of urban rail vehicles are established.By solving the above mathematical model,the limited parameters of urban rail vehicle operation are calculated.Finally,according to the above limiting parameters and the urban rail train operation model,the hierarchical distributed control system of urban rail train based on the Internet of things is designed and simulated by using the Simulink simulation platform of MATLAB software and the design principle of hierarchical distributed control system.At the same time,in order to enhance the authenticity of the hierarchical distributed control system of urban rail train based on the Internet of things,the design gui is used The simulation model of hierarchical distributed control system for Urban Rail Transit Based on Internet of things is encapsulated by computer interface.