Simulation Modeling,Key Equipment Selection And Operation Optimization Of Box Logistics System In Hospitals

With the steady growth in the number of general hospitals in China,the demand for pharmaceutical intra-hospital logistics in China’s hospitals continues to rise.To solve the problem of huge volumes of material transportation such as infusion drugs,instruments,test specimens and various consumables in large hospitals,more and more large hospitals have started to introduce medium-sized box logistics systems for optimizing the way of medical material logistics transmission,which has improved the hospital access environment.Taking the medium-sized box logistics system solution in Hospital H as the research object,the problems of the solution efficiency are analysed with the help of RaLC logistics simulation technology,and the high-floor vertical lifting equipment,the bottleneck point of efficiency,is selected and designed.On this basis,the task sequencing of the vertical lifting equipment is optimised to effectively improve the operational efficiency of the equipment.Firstly,the plan layout of the intra-hospital logistics system solution for Hospital H is explained.Detailed introduction of the hospital intra-hospital logistics system vertical lifting equipment,horizontal conveying equipment,work stations,the function and working principle of the control system.On this basis,the process flow of medical supplies distribution of the hospital intra-hospital logistics system is analysed,and the list of logistics demand and logistics efficiency design requirements for each building in the hospital are determined.Then,RaLC simulation software of logistics is applied to build a 3D simulation model of Hospital H’s intra-hospital logistics system solution and simulate and run intra-hospital logistics task orders.Through the efficiency analysis of the simulation results,it is found that the multireceiver vertical lifting equipment used in the solution did not meet the efficiency requirements of material distribution in some high-rise buildings.To address this issue,by introducing a replacement for the relay-style vertical lifting equipment,designing its control operation logic rules and conducting an efficiency comparison analysis between the relay-style vertical lifting equipment and the original multi-receiver vertical lifting equipment through simulation technology,the selection of vertical lifting equipment for each ward building within the hospital is determined.Finally,task sequencing optimisation is carried out for relay-style vertical lifting equipment and multi-receiver vertical lifting equipment respectively.For the relay-style vertical lifting equipment,the equipment task-sorting problem is modelled by Petri net process description and order operation time-series analysis,and solved by using genetic algorithm.On this basis,considering the field operation condition constraints,add sorting cache line in horizontal conveying equipment,design a heuristic task kind interleaved sorting algorithm to achieve task sorting optimization,and verify the effectiveness of both algorithms through simulation experiments.For multi-load vertical hoisting equipment,design an adjacent floor task combination sorting algorithm based on multi-end caching equipment,and verify the effectiveness of the scheme through simulation experiments.