| 题名 | 面向用电信息采集系统的多信道MAC协议研究 |
| 作者 | 李悦 |
| 学位类别 | 硕士 |
| 答辩日期 | 2014-05-28 |
| 授予单位 | 中国科学院沈阳自动化研究所 |
| 导师 | 尚志军 |
| 关键词 | 用电信息采集系统 MAC协议 多信道 自适应信道切换 |
| 其他题名 | Research on Multi-channel MAC Protocol for Electricity Information Acquisition System |
| 学位专业 | 控制工程 |
| 中文摘要 | 随着智能电网建设的快速发展，用电信息采集系统正在经历着前所未有的技术革命。用电信息采集系统经历了从电力线负荷控制系统，到总线管理系统，再到当前正在探索实行的微功率无线系统的历史性变革。基于微功率无线技术的用电信息采集系统可以有效避免有线传输的种种弊端，减少系统功耗和成本，并在减少人力资源及其管理成本方面发挥重要作用。 当前，用电信息采集系统所采用的微功率无线技术都是以无线传感器网络（WSN）为基本模型，根据用电信息采集需求合理构建网络，实现对用电信息的实时采集、管理和计费。在以WSN为基础的用电信息采集网络中，数据的传输质量是提高用电信息采集成功率的关键因素之一。然而，采用微功率无线技术的用电信息采集系统在现实环境中会受到诸如路径损耗、衰落、噪声等因素的影响。同时，其他共存的无线网络之间的干扰也会严重影响通信的可靠性。因此，面向用电信息采集系统的WSN介质接入（MAC）协议需要加强抗干扰能力。 为了加强用电信息采集网络抗干扰的能力，本文提出了一种面向分簇用电信息采集网络的多信道MAC协议。该协议对用电信息采集网络进行星网状分簇管理，簇间通信采用多信道并行传输方式，簇内通信采用基于TDMA的单信道传输模式。网络内的各智能电表均采用基于信道质量实时评估的自适应信道切换机制，确保网络通信的可靠。本文基于OMNeT++仿真平台，搭建了用电信息采集网络仿真模型，对所提出的多信道MAC协议进行了仿真实验。仿真结果表明，与传统的单信道MAC协议相比，该多信道MAC协议可以有效提升网络的吞吐量和抗干扰能力，较好地满足用电信息采集网络的数据通信要求。 |
| 索取号 | TN915.04/L36/2014 |
| 英文摘要 | The electricity information acquisition system (EIAS) is one of the most important components in smart grid. EIAS is experiencing an unprecedented technological revolution from the power line load control system, the bus management system, to the micro-power wireless system. By using the wireless technology based electricity information collection system, it not only can effectively avoid all kinds of the drawbacks of the wired system, but also can reduce the power consumption and cost which also has a considerable meaning in reducing the human resource management and consumption. Nowadays, most of the micro-power wireless technology used by the electricity information acquisition system is based the wireless sensor network, which achieve real-time electricity information collection, management and billing. In the WSN-based electricity information acquisition network, the data transmissions become the key factor that make sure the real-time and the reliability of the network. However, the micro-power wireless technology used by the electricity information acquisition system suffers from path loss, fading channels and noise. Meanwhile, the interference between coexisting wireless networks will seriously affect the reliability of communication. Thus, the medium access control (MAC) protocol for electricity information acquisition system needs to strengthen anti-jamming capability. As strengthen anti-jamming capability, in this paper, a new multi-channel MAC protocol for cluster networks was proposed. The protocol manage the electricity information acquisition system with two grade star mesh clustering, and parallel transmission mode is used in intra-cluster communication; single-channel based on the TDMA is used inter-cluster communication. In the protocol, every smart meter within the network uses adaptive channel switching mechanism based on the real-time link quality estimation to make sure the reliability of the network communication. By the OMNeT++ simulation platform, a model of electricity information acquisition system is built, and the proposed multi-channel MAC protocol is verified. Simulation results show that compared with single-channel MAC protocol, this MAC protocol could improve networks throughput and anti-interference reliability which can meet the characteristics of the large amount of data and strong concurrency in electricity information acquisition system. |
| 语种 | 中文 |
| 产权排序 | 1 |
| 页码 | 61页 |
| 分类号 | TN915.04 |
| 内容类型 | 学位论文 |
| 源URL | [http://ir.sia.ac.cn/handle/173321/14827]  |
| 专题 | 沈阳自动化研究所_工业控制网络与系统研究室 |
| 推荐引用方式 GB/T 7714 | 李悦. 面向用电信息采集系统的多信道MAC协议研究[D]. 中国科学院沈阳自动化研究所. 2014. |
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