| The cold chain logistics is based on frozen technology and refrigeration technology to carry out the cold storage of food logistics process,which for ensuring food quality and reduce food loss in the cold environment.Logistics process include picking,grading pre-cooling,packaging processing,distribution,wholesale,retail links and so on.With the development of the economy,the strength of national strength,people's living standards have also been improved,so the demand for fresh agricultural products is also growing,especially the requirements of product quality,which put forward higher requirements for the cold chain logistics distribution.In China,cold chain logistics is still in its infancy,it faces not only unprecedented challenges,but also a golden opportunity.In this paper,cold chain logistics is as research object,considering the following aspects:Firstly,this paper designs a remote monitoring system for cold chain truck which based on ZigBee wireless sensor network and GPS positioning technology,in the hardware aspect.This system can carry out the dynamic data acquisition,transmission and alarm for the whole logistics transportation process,thus the managers can effectively control and schedule the vehicle.Secondly,this study construct the mathematical model of vehicle routing in urban cold chain logistics with the aim of minimizing the distribution cost(maximizing the benefits of distribution station)which is from the point of view of distribution station,analyzing the factors influencing the cost in detail,and considering the congestion cost of the urban traffic.The heuristic algorithm is used to solve the model,and an example is given to analyze the rationality and feasibility of the algorithm.Finally,this paper uses multi agent software Netlogo to carry out the simulation of multi distribution station in the situation of competition and cooperation,and analyzes how to save the cost as well as expand the benefits of each distribution station through cooperation. |
PDF Full Text Request