【摘要】：本文的主要研究目的是合理使用物聯(lián)網(wǎng)技術(shù)，利用輕便安全的幼兒的安全監(jiān)控裝置，可以在近距離內(nèi)監(jiān)控幼兒的位置信息，并能通過軟件實現(xiàn)，將這些位置信息進行收集，發(fā)送到遠程的計算機上，以便對這些數(shù)據(jù)進行記錄和分析。 本文以技術(shù)研究為基礎，以應用為目的，通過仔細的需求分析、精心的系統(tǒng)設計和有效的系統(tǒng)實現(xiàn)，完成了一個完整的應用系統(tǒng)的設計開發(fā)過程。 本文首先對系統(tǒng)的研究背景、研究意義進行了分析。其次，進行了物聯(lián)網(wǎng)技術(shù)、RFID技術(shù)、物聯(lián)網(wǎng)應用程序架構(gòu)和定位方法等基礎技術(shù)研究，這些技術(shù)是實現(xiàn)本系統(tǒng)的基礎。最后，對軟件系統(tǒng)進行了需求分析、系統(tǒng)設計和系統(tǒng)實現(xiàn)，并在文中描述這一完整過程。 在基礎技術(shù)研究中，本文重點進行了定位方法研究。在研究中從常用的定位方法入手，包括距離定位法、特征定位法和參照點定位法。并在已有定位方法的基礎上，改進了參照點定位法，作為系統(tǒng)的定位算法。在改進的算法中，將距離定位法融入到了參照點定位法。參照點的作用，不是用于狀態(tài)的基準值，而是用于修正信號衰減的經(jīng)驗公式中的參數(shù)值。 本文采用UML描述了系統(tǒng)的設計。使用用例圖對用戶的功能需求進行了描述，，給出了系統(tǒng)的功能邊界和功能說明。在系統(tǒng)的功能確定之后，就需要對軟件的整體架構(gòu)進行設計，本文中從硬件架構(gòu)和軟件架構(gòu)兩個方面描述了系統(tǒng)的架構(gòu)設計。硬件架構(gòu)設計描述了系統(tǒng)的硬件組成和連接關(guān)系。軟件架構(gòu)設計描述了系統(tǒng)的軟件邏輯劃分和邏輯組成的信息交互方式。采用了層次化的軟件架構(gòu)，提高了系統(tǒng)的可伸縮性和可維護性。此外，使用流程圖對關(guān)鍵的業(yè)務流程的處理過程進行刻畫，展示業(yè)務處理過程。 在系統(tǒng)設計的基礎上，本文還描述了系統(tǒng)實現(xiàn)中的一些關(guān)鍵部分，包括軟件架構(gòu)的實現(xiàn)、基于管道-過濾器模式的異常告警實現(xiàn)、RFID通信與數(shù)據(jù)交互和多線程數(shù)據(jù)處理。這些關(guān)鍵部分的實現(xiàn)決定著系統(tǒng)的效率。軟件采用了.NET組件技術(shù)實現(xiàn)了軟件架構(gòu)中層次的封裝。在基于管道-過濾器模式的異常告警機制實現(xiàn)中給出了關(guān)鍵類的定義，并重點考慮了多線程訪問時對對象的鎖定。RFID通信與數(shù)據(jù)交互和多線程數(shù)據(jù)處理闡述了RFID的通信機制和通信實現(xiàn)。
[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.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TP391.44;TN929.5

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