Research On Optimization Of Cold Chain Logistics Distribution Path Of Urban Agricultural Products

With the acceleration of people's life rhythm and the improvement of life quality,the problem of food health has attracted people's attention.With the emerging industry of cold chain logistics gradually coming into people's vision,as an indispensable part of daily life,the food quality of agricultural products has attracted more and more attention.But in the process of fresh agricultural products from production to sale,almost three-quarters of the time is consumed in transportation and distribution.Distribution and transportation has gradually become an important part of the cold chain logistics of fresh agricultural products.The urban distribution from the distribution center to each sales point is the most easily ignored link.However,it is the most easily ignored link,but it has become the bottleneck restricting the development of the cold chain logistics and distribution of the whole city,and the most important part in ensuring service and food safety A link is needed.Therefore,the design of a reasonable vehicle distribution scheme can effectively reduce the cost of distribution and ensure food safety.In this paper,the research topic of the paper is the optimization of cold chain logistics distribution path of urban agricultural products,which mainly includes the following contents:(1)Based on a large number of domestic and foreign literature,the paper summarizes the particularity of cold chain logistics of agricultural products and the basic mode of urban distribution of agricultural products,sorts out the classification,components,algorithm solution and other related theories of cold chain logistics vehicle routing problem,and analyzes the optimization of cold chain logistics distribution path The necessity of.(2)In urban road network distribution,the driving time of each route is dynamic because of road congestion and drivers' driving habits.Before building the model,this paper first introduces the classification of the dynamic network distribution vehicle optimal scheduling problem,and then analyzes the possible costs of vehicles in the distribution process,including fixed cost,operation cost,waiting cost,penalty cost and goods damage cost,and constructs the cold chain logistics dynamic network distribution vehicle optimal scheduling model with time window.(3)By comparing all kinds of existing heuristic algorithms,analyzing their advantages and disadvantages,as well as the applicability,we can choose the appropriate solution algorithm genetic algorithm.Then,the advantages and disadvantages of genetic algorithm are analyzed,and in view of the disadvantages of genetic algorithm,a hill climbing operator is added to improve,so as to design a hybrid genetic algorithm suitable for solving the model in this paper.(4)Combined with the actual situation of cold chain logistics distribution in Zh company,the hybrid algorithm of genetic algorithm and hill climbing algorithm is designed to solve the model.After the calculation is completed,the results are analyzed first,and it can be found that the results are obviously better than the original distribution network.Therefore,the research results of this paper are of practical significance,which can be used for the company Effectively save distribution costs and improve customer satisfaction.