基于位置信息的教学设备服务系统的设计与实现

发布时间：2019-01-13 07:04

【摘要】：高校教学设备是教学科研工作中的基础设施,教学设备的正常运行是保障教学科研工作有序稳定开展的先决条件。尤其近几年来,高校不断加强教学信息化的建设,教学设备数量呈现指数型增长。不可避免的教学设备在使用过程中会突发各种故障,为了能够加强教学设备管理,迅速有效的解决突发故障问题,充分发挥教学设备的实用价值,为广大师生创建一条及时有效的报修通道,保证教学科研工作的正常开展,为此开发一款面向在校师生的教学设备服务系统具有重要的现实意义。本文设计和实现了基于Android端的教学设备服务系统,针对目前Android手机无法实现室内定位的现状,应用基于信号强度特征匹配的Wifi定位算法来实现室内定位。依据软件工程的思想进行系统的分析设计与实现。本文工作主要包含以下三个部分:(1)通过对校园教学设备使用状况进行实地调研,探讨教学设备服务系统的开发背景;阅读大量文献以及浏览参考某些高校的设备服务系统网站,对现存的教学设备服务系统现状进行初步研究;进行市场调研,根据调研结果选择教学设备服务系统的开发平台。(2)研究国内外室内定位的相关技术和基于Wifi室内定位算法,目前主要有四种常用的局域网室内定位技术,分别为超宽带室内定位技术、Zigbee室内定位技术、超声波室内定位技术、基于Wifi的室内定位技术。由于此次开发平台采用Android平台,因此选择基于Wifi的室内定位技术来进行室内定位研究,选择基于信号强度特征匹配的Wifi定位算法来实现室内定位。(3)详细介绍了基于位置信息的教学设备服务系统的需求分析、系统设计和实现过程。首先,论文采用软件工程中用例分析法对教学设备服务系统需求进行描述,用例分析是沟通系统需求和系统设计之间的桥梁;其次,对系统进行总体设计及详细设计,主要采用架构图、系统功能流程图的方式来对系统设计进行说明;然后,设计数据库,基于数据库的第三范式来合理设计数据库E-R图,并对数据库进行建模;最后,采用系统实际效果图的形式来呈现系统实现的各项功能,并对其中部分功能的核心代码进行简略的介绍。基于位置信息的教学设备服务系统最终实现了用户端、维修端、后台管理端共三个服务端,基本满足了教学设备服务工作的需求。为用户提供便捷,高效的设备故障维修方式,实时监控问题进度,提供图片、语音、室内位置定位等多途径的描述方式。管理员可从手机移动端或PC端登录教学设备服务系统,分类查看所有问题及数据分析的统计,大幅度的提高了工作的效率。整个系统操作方便简单,功能完善,可推广空间大。
[Abstract]:College teaching equipment is the infrastructure of teaching and research work, and the normal operation of teaching equipment is the prerequisite to ensure the orderly and stable development of teaching and scientific research work. Especially in recent years, colleges and universities have been strengthening the construction of teaching information, and the number of teaching equipment has increased exponentially. In order to strengthen the management of teaching equipment, solve the problem of sudden failure quickly and effectively, and give full play to the practical value of teaching equipment, To establish a timely and effective reporting channel for teachers and students to ensure the normal development of teaching and research work, it is of great practical significance to develop a teaching equipment service system for teachers and students. A teaching equipment service system based on Android is designed and implemented in this paper. Aiming at the current situation that Android mobile phone can not realize indoor positioning, Wifi localization algorithm based on signal intensity feature matching is used to realize indoor location. According to the idea of software engineering, the system design and implementation are carried out. The work of this paper mainly includes the following three parts: (1) through the field investigation on the use of campus teaching equipment, the background of the development of teaching equipment service system is discussed; Read a lot of literature and refer to the equipment service system website of some colleges and universities, and carry on the preliminary research on the present situation of the existing teaching equipment service system; Carry on the market research, select the development platform of the teaching equipment service system according to the research result. (2) study the domestic and foreign indoor positioning related technology and the indoor positioning algorithm based on Wifi, there are mainly four kinds of commonly used LAN indoor positioning technology at present, UWB indoor positioning technology, Zigbee indoor positioning technology, ultrasonic indoor positioning technology, Wifi based indoor positioning technology. Because the Android platform is adopted in this development platform, the indoor positioning technology based on Wifi is chosen to carry out indoor positioning research. The Wifi localization algorithm based on signal intensity feature matching is selected to realize indoor positioning. (3) the requirement analysis, system design and implementation process of teaching equipment service system based on location information are introduced in detail. First of all, the paper uses use case analysis in software engineering to describe the requirements of teaching equipment service system. Use case analysis is a bridge between system requirements and system design. Secondly, the overall design and detailed design of the system, mainly using the architecture diagram, system function flow chart to explain the system design; Then, the database is designed, based on the third normal form of the database, the database E-R graph is designed reasonably, and the database is modeled. Finally, the functions of the system are presented in the form of the actual effect diagram of the system, and the core codes of some of the functions are briefly introduced. The teaching equipment service system based on location information finally realizes three service terminals: user end maintenance end and backstage management end which basically meets the needs of teaching equipment service. To provide users with convenient and efficient equipment maintenance, real-time monitoring of progress, provide pictures, voice, indoor location and other multi-way description. The administrator can log on to the teaching equipment service system from the mobile or PC terminal of the mobile phone and view all the problems and statistics of data analysis, which greatly improves the efficiency of the work. The whole system is easy to operate, has perfect function and can be popularized in large space.
【学位授予单位】：山东师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP311.52

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