基于RFID的幼儿位置监控系统的设计与实现

发布时间：2018-09-12 05:56

【摘要】：本文的主要研究目的是合理使用物联网技术，利用轻便安全的幼儿的安全监控装置，可以在近距离内监控幼儿的位置信息，并能通过软件实现，将这些位置信息进行收集，发送到远程的计算机上，以便对这些数据进行记录和分析。本文以技术研究为基础，以应用为目的，通过仔细的需求分析、精心的系统设计和有效的系统实现，完成了一个完整的应用系统的设计开发过程。本文首先对系统的研究背景、研究意义进行了分析。其次，进行了物联网技术、RFID技术、物联网应用程序架构和定位方法等基础技术研究，这些技术是实现本系统的基础。最后，对软件系统进行了需求分析、系统设计和系统实现，并在文中描述这一完整过程。在基础技术研究中，本文重点进行了定位方法研究。在研究中从常用的定位方法入手，包括距离定位法、特征定位法和参照点定位法。并在已有定位方法的基础上，改进了参照点定位法，作为系统的定位算法。在改进的算法中，将距离定位法融入到了参照点定位法。参照点的作用，不是用于状态的基准值，而是用于修正信号衰减的经验公式中的参数值。本文采用UML描述了系统的设计。使用用例图对用户的功能需求进行了描述，，给出了系统的功能边界和功能说明。在系统的功能确定之后，就需要对软件的整体架构进行设计，本文中从硬件架构和软件架构两个方面描述了系统的架构设计。硬件架构设计描述了系统的硬件组成和连接关系。软件架构设计描述了系统的软件逻辑划分和逻辑组成的信息交互方式。采用了层次化的软件架构，提高了系统的可伸缩性和可维护性。此外，使用流程图对关键的业务流程的处理过程进行刻画，展示业务处理过程。在系统设计的基础上，本文还描述了系统实现中的一些关键部分，包括软件架构的实现、基于管道-过滤器模式的异常告警实现、RFID通信与数据交互和多线程数据处理。这些关键部分的实现决定着系统的效率。软件采用了.NET组件技术实现了软件架构中层次的封装。在基于管道-过滤器模式的异常告警机制实现中给出了关键类的定义，并重点考虑了多线程访问时对对象的锁定。RFID通信与数据交互和多线程数据处理阐述了RFID的通信机制和通信实现。
[Abstract]:The main purpose of this paper is to make use of the Internet of things technology reasonably, to use the portable safety monitoring device of young children, to monitor the position information of children in close range, and to collect these location information through software. It is sent to a remote computer to record and analyze the data. Based on technical research and application, this paper completes the design and development process of a complete application system through careful requirement analysis, careful system design and effective system implementation. First of all, the research background and significance of the system are analyzed. Secondly, the technology of Internet of things (IOT), RFID technology, Internet of things application program architecture and location method are studied. These technologies are the basis of the implementation of the system. Finally, the requirement analysis, system design and system implementation of the software system are carried out, and the complete process is described in this paper. In the basic technology research, this paper focuses on the research of positioning method. In the research, we start with the common positioning methods, including distance location, feature location and reference point positioning. On the basis of the existing localization methods, the reference point location method is improved as the location algorithm of the system. In the improved algorithm, the distance location method is incorporated into the reference point location method. The function of the reference point is not the reference value for the state, but the parameter value in the empirical formula for correcting the attenuation of the signal. In this paper, UML is used to describe the design of the system. The functional requirements of users are described by use case diagram, and the function boundary and function description of the system are given. After the function of the system is determined, it is necessary to design the whole software architecture. This paper describes the architecture design of the system from two aspects: hardware architecture and software architecture. The hardware architecture design describes the hardware composition and connection relationship of the system. The software architecture design describes the software logic partition and the information interaction mode of the logic composition of the system. The hierarchical software architecture is used to improve the scalability and maintainability of the system. In addition, the flow chart is used to describe the process of the key business process. On the basis of the system design, this paper also describes some key parts of the system implementation, including the implementation of software architecture, the implementation of abnormal alarm based on pipe-filter mode, RFID communication, data interaction and multi-thread data processing. The implementation of these key parts determines the efficiency of the system. The software adopts. Net component technology to realize the level encapsulation in the software architecture. The key classes are defined in the implementation of abnormal alarm mechanism based on pipe-filter mode. The communication mechanism and implementation of RFID are discussed in detail.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.44;TN929.5

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