【作者】 李波；

【导师】 刘有源；

【作者基本信息】 武汉理工大学 ， 机械电子工程， 2003， 硕士

【摘要】 随着物流技术的发展，储存、运输行业的规模扩大，企业更注重物流的效率。货场作为物资流通过程中的一个重要环节，目前基本处于人工管理或半自动化管理状态，物流效率不高。如何提高货场调度效率是广大企业急需解决的一项课题。论文从提高货场的效率的角度出发，提出了基于RFID的货场自动调配系统模型，旨在实现货场的自动化、智能化、信息化管理。 根据研究的需要，论文首先综述了国内外在自动识别、AGV、系统集成以及管理信息系统等方面的发展及现状，介绍了论文的研究内容。 通过系统的需求分析和性能分析，论文提出了以计算机控制为核心，以射频识别为信息采集手段、以AGVS和装卸桥为执行单元的集成系统。探讨了这些基本单元的物理结构及其集成方式，同时对系统的功能结构也作了说明。 RFID单元作为系统的数据采集终端，负责采集电子标签所包含的集装箱信息。论文分析了与电子标签相关的几种基带中的编码方法，重点探讨了CRC码和汉明码的原理，并将这两种方法应用于电子标签的编码中。 货场管理信息系统是论文研究的重点之一。在对管理信息系统进行需求分析的基础上，通过概念设计、逻辑结构设计和物理结构设计，建立了管理系统数据库的数据模型，选择合适的数据库访问技术，完成系统出库管理、入库管理、统计、查询以及货位管理等功能设计。 论文在分析神经网络、人工智能和图论等常用的路径规划算法的特点后，提出系统图模型，并且根据一定的转换规则，将图模型转换为Petri网模型，从最短路径、转弯次数和路径重复率三个方面定义了最优化路径的评价指标，应用相应的算法实现最优化路径的规划。 界面是应用软件与用户的接口。论文介绍了应用软件中的几个主要界面和这些界面的操作过程，并以入库管理为例说明了系统入库管理功能的实现。 论文在总结全文工作的基础上，对进一步研究提出了建议和展望。更多还原

【Abstract】 With development of logistics technology and deposit &transport industry, enterprises pay more attention to the efficiency of material flow. Storage yard, a very important chain of material flow, now is supervised manually or in the state of semi-automation. Its efficiency isn’t high. It is imperative to all enterprises to improve the efficiency of material flow. So the thesis puts forward an autoscheduling system model which aims to accomplish the automatic, intelligent and informational supervision of storage yard.For the sake of research, the thesis summarizes the development and present situation of the technology such as automatic identification, AGVS, system integration and MIS at home and abroad, and introduces research contents.The thesis puts forward an integrated system by the analysis of need that is made up of computer controlling units, RFID units, AGVS and PCGC units, 晈here computer controlling is the kernel, RFID is used to collect data , AGVS and PCGC are acted as implementing units. After discussing the structures and integration ways, it also describes the function of the system.As narrated above, RFID is in charge of data collection. Some codes of base band correlation with Tag are discussed and more attention is paid to CRC and Hamming code. During Tag’s coding, CRC and Hamming code have also been used.Storage yard MIS is one of the emphasizes for research. Based on the analysis of need, the thesis builds data models of MIS after notion design, logical structure design and deposit structure design. All kinds of function of MIS can be implemented with suitable database accessing technology.On the basis of characteristic analysis of NN, AI and graphics for path plan, the thesis offers a graphics model and changes it into a Petri net model in the light of some rules. Taking the shortest path, turning times and path overlapping into account, the most excellent path can be got through a kind of modified arithmetic.Interface links users to application software. The thesis introduces some primary interfaces in the software and their operation. Later an example is offered to implemented management of goods deposition.Based on the summaries and conclusions of all research works, some suggestions and prospect for further researches are put forward.更多还原