【作者】 叶周青；

【导师】 李云飞；

【作者基本信息】 苏州大学 ， 计算机技术（专业学位）， 2013， 硕士

【摘要】 随着科学技术的发展，物联网技术已经成为新一代信息技术的重要组成部分。物联网技术是通过射频识别（RFID）、红外感应器、全球定位系统、激光扫描器等信息传感设备，按约定的协议，将任意物品与互联网相连接，进行信息交换和通讯，以实现智能化识别、定位、追踪、监控和管理。在中国，电动车已经成了大多数人的代步工具。电动车控制系统是电动车的关键技术。目前，常见的电动自行车，控制过程比较简单，一般只有几个简单的指令，这种简单控制方法在能量管理、安全保护、可驾驭性上往往存在不足。本文针对这个问题，设计了基于ZigBee技术的电动车控制系统，该系统不仅能够科学地管理能耗、提供全面的安全保护和舒适的驾驭性能，还能将发生故障的电动车对应的产品信息、用户信息、位置信息以及故障信息传输给远程的监管平台，监管平台对故障电动车进行更精确的故障诊断，确定故障的类型、性质和部位，及时做出维修决策和响应，减少用户的损失和等待时间。本文主要围绕两大关键技术展开叙述：嵌入式系统和通信协议。整个嵌入式系统包含三层结构：控制节点层，网络汇聚层和管理应用层。控制节点层主要是以基于8051内核的CC2530芯片为基础，通过其外围扩展接口实现对电动车的控制，并且在IEEE802.15.4标准协议基础上实现与网络汇聚层的通信。网络汇聚层的设计主要以TI公司的一款基于Contex-M3系列LM3S9B92芯片为基础，利用其串口模块和以太网模块，实现实时控制、数据传输，并在TCP/IP标准协议的基础上实现与管理应用层的网络通信。管理应用层主要使用到SOCKET套接字编程，实现与网络汇聚层的交互。通信协议主要使用ZigBee通信协议和LWIP通信协议。更多还原

【Abstract】 With the development of science and technology, the Internet of things technologyhas been an important part of a new-generation information technology. The Internet ofthings technology can create a connection and communication between any objects and theInternet based on certain protocols by information sensing equipments such as radiofrequency identification (RFID), infrared sensors, global positioning system and laserscanners. By such means, intelligent identification, location, tracing, monitoring andmanagement can be achieved.In China, electric bikes have been the most popular conveyance. Electric controlsystem is the key technology of electric vehicles. At present, for common electric bic-ycles, the control process is simple, consisting of only a few simple instructions, which isoften inadequate to the requirements of energy management, safety, and riding ability. Tosolve this problem, an electric bike controlling system based on ZigBee was proposed. Thesystem is not only capable of providing scientific management of energy, protection fromaccidents and comfort performance, but also can transmit the product information, userinformation, location information and failure information to the remote supervisionplatform when failures occur. The platform can accomplish accurate fault diagnosis toquickly determinate the type, nature and position of the failure. By such means, repairmendecisions can be made promptly and users’ waiting time can be decreased.The article is mainly about two key points: embedded system and communicationprotocol. The entire embedded system consists of three layers, the control node layer,network layer and management application layer. The control node layer can both controlthe electric bike by the peripheral extension interface of the CC2530chip taking8051as kernel and communicate with network layer based on IEEE802.15.4protocol. The networklayer handles implementation of real-time control and data transmission by serial portmodule and ethernet module of TI’s LM3S9B92chip from Contex-M3series. Besides, italso handles the communication with the management application layer based on TCP/IPprotocols. The management application layer connects to the network layer based onsocket programming. The main protocols contained in the3-layer structure are ZigBee andLWIP.更多还原