基于低功耗蓝牙的无线体域网硬件设计与实现

发布时间：2018-03-12 19:03

本文选题：体域网　切入点：低功耗蓝牙技术　出处：《吉林大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着低功耗无线通信方式的发展和片上系统的开发，在身体上部署大量的微型智能传感器节点用以监控人体的各种信息已变为可能。无线体域网就是将这些传感器节点植入体内或者放置在身体的表面，收集重要的生理的和非生理的数据，将这些收据通过无线的方式传送至系统数据库进行数据存储、处理、分析，在必要时采取措施进行系统的诊断。体域网的工作区域是身体，具有一定的局限性。在设计无线体域网网络传感器节点和汇聚节点时需要考虑诸如灵活性、实用性、扩展性等很多因素。基于以上因素的考虑，本文所设计的系统具有以下特点：一、功耗低。低功耗蓝牙技术是由蓝牙技术联盟最新推出的，与传统蓝牙技术相比，低功耗蓝牙技术将原有的空闲状态代替为休眠状态，广播信道也变为3个，大大降低了蓝牙的功耗。二、灵活性强。市场上很多手机开始集成低功耗蓝牙技术，能够很好地与智能传感器进行连接，，不必受限于固定的场合，灵活性的加强能推动体域网的普及。三、成本低。系统选用的CC2540芯片是一个真正的片上系统，只需要极少的外围设备就可以正常工作，而且一包有2500个的芯片只需要9美元左右。本文的主要研究工作如下：一、对市场上三种流行的无线通信技术进行了比较，并将低功耗蓝牙技术与802.15.6标准进行了两个方面的对比，从理论上得出低功耗蓝牙也适应于体域网组网的结论。二、在硬件和软件设计方面，针对不同功能的传感器节点，按照其使用说明书制作了其电路图，编写了传感器节点采集数据的程序代码，设计了体域网的系统结构以及工作流程，设计了汇聚节点与上位机和智能手机进行通信的工作流程，完成了源代码的编写。三、在硬件实现方面，实现了传感器数据的采集工作，并将采集到的数据传送至上位机和智能手机，用实际结果验证了系统的可行性和成功性。
[Abstract]:With the development of low-power wireless communication mode and the development of on-chip system, It has become possible to deploy a large number of tiny smart sensor nodes on the body to monitor all kinds of information about the human body. Wireless body-area networks (WSNs) are those sensor nodes that are implanted into the body or placed on the surface of the body. Collect important physical and non-physiological data, send these receipts to the system database wirelessly for data storage, processing, analysis, and take measures to diagnose the system when necessary. The working area of the body area network is the body, which has certain limitations. Many factors such as flexibility, practicability, expansibility and so on need to be taken into account in designing wireless body area network sensor nodes and convergence nodes. The system designed in this paper has the following characteristics:. First, low power consumption. Low-power Bluetooth technology is newly introduced by Bluetooth technology alliance. Compared with traditional Bluetooth technology, low-power Bluetooth technology replaces the original idle state with dormant state, and the broadcast channel becomes three. The power consumption of Bluetooth is greatly reduced. Second, the flexibility is strong. Many mobile phones begin to integrate low-power Bluetooth technology in the market, which can be well connected to the smart sensor, no need to be limited to a fixed situation, the enhancement of flexibility can promote the popularity of the body area network. Third, low cost. The CC2540 chip selected for the system is a real on-chip system, requiring very few peripherals to work properly, and a package of 2,500 chips costs only about $9. The main work of this paper is as follows:. First, three popular wireless communication technologies in the market are compared, and the low-power Bluetooth technology and 802.15.6 standard are compared in two aspects, and the conclusion that low-power Bluetooth is also suitable for LAN network is obtained theoretically. Secondly, in the aspect of hardware and software design, the circuit diagram of sensor nodes with different functions is made according to their instructions, and the program code for collecting data from sensor nodes is compiled. The system structure and workflow of the body area network are designed, and the workflow of communication between the convergent node and the host computer and smart phone is designed, and the source code is compiled. Thirdly, in the aspect of hardware implementation, the sensor data acquisition is realized, and the collected data is transmitted to the upper computer and smart phone. The feasibility and success of the system are verified by the actual results.
【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】：TN925

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