【作者】 喻耀江；

【导师】 金瓯；

【作者基本信息】 中南大学 ， 计算机科学与技术， 2010， 硕士

【摘要】 自动售货机是含有商品销售和物流配送的系统。随着科技的发展,自动售货机的功能也越来越多,比如在传统的自动售货机中装载无线模块,通过短信息传递来监控自动售货机的销售和机器运行状态,这样使得系统过程越来越复杂。为了使系统的开发人员、维护补给人员、监控管理人员对自动售货机系统的运行有一个统一的理解,合理的组织和优化企业内部物流配送方式,建立合理的物流控制系统,因此要建立可以精确模拟系统动态运行的模型,来定量的分析效果的改进,实现系统的绩效分析。由于自动售货机系统属于离散事件动态系统,必须用特定的建模工具。本文引入了Petri网理论。从基本Petri网入手,在介绍了Petri网基本原理,性质的基础上把Petri网建模技术应用于自动售货机系统中,最终建立传统的自动售货机销售系统和基于短信息监控的销售系统的Petri网模型,并利用仿真工具仿真执行。针对引入无线技术的自动售货机物流过程重构问题,提出了一种抑制弧时延Petri网过程模型。模型适用于描述无线信息的决策对物流配送的影响,并与传统的自动售货机物流配送模型比较,模拟在不同缺货情况下两种配送的过程,分析过程绩效在时间方面的改进。更多还原

【Abstract】 Vending machine is a marketing system which contains the Merchandising and the Distribution. With the development of technology, the vending machines have more functions, for example, load wireless module in traditional vending machines, through the short messaging to monitor vending machine sales and machine status; it makes the system process more complex. To make the system developers, maintenance supplies staff and monitor staff have a unified understanding of vending machine, rational organization and optimize the internal logistics and distribution methods, then make a reasonable logistics control system, it is necessary to establish a system to simulate the dynamic operation of the model accurately, and improve quantitative analysis of effects, to achieve system performance analysis.As the vending machine system is a discrete event dynamic system, we must use a specific modeling tool. This paper introduces the theory of Petri nets. Starting from the basic Petri nets, introducing the basic principles and nature of Petri nets, then use Petri net modeling technique in the vending machine system, finally manufacture a traditional vending machine sale monitoring system and information on short sales of the system Petri net model, perform by using simulation tools. Specific to the wireless technology of vending machines logistics process reengineering issues, bring up a Petri net inhibition of the process model. This kind of model is applicable to describe the wireless information on the logistics and distribution of decision-making, comparing vending machine with the traditional logistics model, simulate the two different shortage distribution process, and analyze process performance improvements in the aspect of time.更多还原