Study On The Path Optimization Of Raw And Fresh Logistics With The City's Express Delivery

With the rapid economic growth,the continuous improvement of national living standard and consumption level,the perfection and implementation of the "three agriculture' policy,people's demand and consumption of fresh food is increasing day by day,fresh food has become one of the important parts of people's daily life.However,fresh food itself has the special nature of perishable,time and temperature sensitivity,which directly affects the quality of fresh food,indirectly affects consumer satisfaction,and hinders the pace of economic development.Therefore,how to do a good job of raw logistics for the same city express distribution is both an opportunity and a challenge.Under the background of the above-mentioned research,this paper summarizes the research status of the same city express delivery of raw logistics at home and abroad by reading the literature,and understands that the distribution scheme of optimizing the logistics vehicle path can effectively solve the distribution problem of fresh food.At the same time,this paper further introduces the relevant research on vehicle path and the concept of fresh logistics,with the minimum total cost of fresh logistics and distribution as the research target,the distribution vehicle load weight and the customer-specified time window as the constraint condition,the actual situation of fresh logistics to optimize the existing vehicle path model.The distribution path optimization model of fresh logistics is proposed.At the same time,the common algorithm for solving vehicle path modelised,and selected the ant colony algorithm as the research method to solve the optimization model of this paper,the use of Python combined research method to write program code as a research tool,combined with the actual study tools from all the use of refrigerated trucks,all the use of non-refrigerated vehicles.Some use refrigerated trucks and non-refrigerated trucks three angles of the path optimization model of fresh logistics analysis and verification,to understand that the effective selection of distribution vehicle types and planning distribution routes can reduce distribution costs.