物联网场景模拟系统的研究与实现

发布时间：2018-03-31 05:03

本文选题：物联网场景　切入点：系统模拟仿真　出处：《西北农林科技大学》2014年硕士论文

【摘要】：物联网场景的模拟是物联网在系统模拟仿真领域中的典型应用，，对智能交通、环境监测、健康护理、供应链物流等等的领域研究均有着重要的意义。现有的研究集中于单一场景的模拟研究，缺乏通用的模拟系统对于所有场景提供一个模拟仿真的平台；而通过物联网设备收集海量真实数据，需要耗费成本较高。针对上述研究现状中存在的问题，本文通过从不同的场景中抽象出统一的模型，并将该通用模型模拟仿真，设计并实现了物联网场景通用模拟平台，从而收集到贴近现实的海量仿真数据，为仿真数据的数据挖掘和相关领域研究提供了数据支持和理论依据。本文的主要研究内容如下：（1）针对物联网场景涉及的领域广、范围大的现状，在面向对象思想的基础上对物联网场景进行了抽象，借鉴了“三个世界”的分析思想，对物联网场景抽象模型进行了划分。同时通过对各个部分的实体进行分类和抽象，得到物联网场景的通用实体模型，并运用典型的物联网场景对得到的通用模型进行了验证。（2）针对系统的特征，归纳了系统通用实体的数学模型。数学模型主要分为两大类：感知实体和物理实体。感知实体的数学模型较为固定，而物理实体的数学模型根据具体的场景有不同的要求。通过实体的数学建模，更加明确了系统的功能以及对场景的深入了解。（3）研究了离散事件系统中的事件调度法的思想。基于事件调度法的仿真算法把系统的数学模型转换为能在计算机上运行的仿真模型，实现了模型转换的理论基础。（4）设计并实现了基于PC平台的物联网场景模拟系统。利用该系统可以进行场景的设计配置，通过场景的配置或者重载进行场景的模拟仿真，仿真收集的数据可以通过界面显示。运用典型的物联网场景反复测试的实验结果表明：系统收集到的仿真数据的最大误差为2.10%，但是在仿真数据量大的情况下该误差可以忽略，同时经过计算对比系统收集到的仿真数据比较贴近现实场景的数据规律，具有一定的有效性和适用性。
[Abstract]:The simulation of the Internet of things scene is a typical application of the Internet of things in the field of system simulation, which is of great significance to the research of intelligent transportation, environmental monitoring, health care, supply chain logistics and so on.The existing research focuses on the simulation of a single scene, the lack of a general simulation system for all scenarios to provide a platform for simulation, and through the Internet of things devices to collect massive real data, it will cost a high cost.In view of the problems existing in the above research situation, this paper abstracts the unified model from different scenes and simulates the universal model, and designs and implements the universal simulation platform of the Internet of things scene.Thus, massive simulation data close to reality are collected, which provides data support and theoretical basis for data mining of simulation data and research in related fields.The main contents of this paper are as follows:1) aiming at the wide field and wide range of the scene of the Internet of things, this paper abstracts the scene of the Internet of things on the basis of the object oriented thought, draws lessons from the analysis of "three worlds", and divides the abstract model of the scene of the Internet of things.At the same time, by classifying and abstracting the entities of each part, the general entity model of the Internet of things scene is obtained, and the common model is verified by the typical Internet of things scene.2) according to the characteristics of the system, the mathematical model of the general entity of the system is summarized.Mathematical models are divided into two main categories: perceptual entities and physical entities.The mathematical model of perceptual entity is fixed, but the mathematical model of physical entity has different requirements according to the specific scene.Through the mathematical modeling of the entity, the function of the system and the in-depth understanding of the scene are more clearly defined.The idea of event scheduling in discrete event systems is studied.The simulation algorithm based on the event scheduling method converts the mathematical model of the system into a simulation model that can run on the computer and realizes the theoretical basis of the model transformation.4) the scene simulation system of Internet of things based on PC platform is designed and implemented.The system can be used to design and configure the scene and simulate the scene by the configuration of the scene or the overload. The data collected by the simulation can be displayed through the interface.The experimental results show that the maximum error of the simulation data collected by the system is 2.10, but the error can be neglected in the case of large amount of simulation data.At the same time, the simulation data collected by the system is close to the data rule of the real scene, so it has certain validity and applicability.
【学位授予单位】：西北农林科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.44;TN929.5

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