公交车载感知终端无线网络接入系统的研究与应用

发布时间：2018-08-06 22:04

【摘要】：物联网已成为当前世界新一轮经济和科技发展的战略制高点之一，被认为是继计算机、互联网之后，世界信息产业的第三次浪潮。在交通、公共安全、农业、环保、工业生产、电力、物流、家居、医疗等领域有巨大的应用前景。公交物联网是物联网在公共交通领域的重要应用。公交车载感知终端对公交车辆内部的状态、位置、速度等以及外部的环境信息进行感知，并通过无线网络的方式进行传输，是公交物联网重要的感知信息获取方式。无线网络的接入是对各类感知信息进行传输的基础，对此本论文对公交车载感知终端无线网络接入系统进行研究并实际应用。本文首先对车辆传感器网络进行分析研究，并结合公交物联网的特点，建立公交车辆传感器网络体系结构，在此基础之上对公交车辆感知节点的功能及结构进行了分析研究。结合公交车辆多无线网络接入的特性，给出了一种公交车载感知终端无线网络接入系统协议模型，并对模型中的关键内容进行了分析。然后，Wi-Fi以及LTE网络是公交物联网信息传输的重要方式，本文对Wi-Fi及LTE无线网络接入协议进行分析研究。以此为基础，并选用具有丰富逻辑设计资源的FPGA（Field Programmable GateArray）中的ZYNQ为平台，对Wi-Fi及LTE的公交车载感知终端无线网络接入系统进行了软硬件设计。第三，以公交车载感知终端开发的层次结构为指导，以ZYNQ平台上LTE及Wi-Fi的软硬件设计为基础，通过对运行在ZYNQ平台上操作系统的LTE与Wi-Fi的驱动开发、内核配置编译以及软件程序移植，实现了公交车载感知终端无线网络的接入，，并对无线网络接入系统的联通性进行了测试。最后，对公交车载感知终端的无线网络接入系统进行实际的项目应用验证。将该系统搭载于公交车上，在LTE与Wi-Fi覆盖范围内，进行了车辆感知信息的传输测试。
[Abstract]:The Internet of things has become one of the strategic heights of the new round of economic and technological development in the world. It is considered to be the third wave of the world information industry after the computer and Internet. In transportation, public safety, agriculture, environmental protection, industrial production, electricity, logistics, home, medical and other fields have great application prospects. Public transport Internet of things is an important application of Internet of things in the field of public transport. The bus carrier perception terminal perceives the internal state, position, speed and external environmental information of the bus, and transmits it through wireless network, which is an important way to obtain the perceived information in the public transport Internet of things. Wireless network access is the basis for the transmission of all kinds of perceptual information. In this paper, the wireless network access system of bus carrier perception terminal is studied and applied in practice. In this paper, the vehicle sensor network (VSNs) is analyzed and studied firstly, and based on the characteristics of the bus network of things, the system structure of the bus sensor network is established, and the function and structure of the perceived nodes of the bus vehicle are analyzed and studied. Based on the characteristics of multi-wireless network access for public transport vehicles, a protocol model of bus carrier sensing terminal wireless network access system is presented, and the key contents of the model are analyzed. Then Wi-Fi and LTE network are important ways to transmit the information of public transport Internet of things. This paper analyzes and studies the access protocols of Wi-Fi and LTE wireless network. On the basis of this, ZYNQ of FPGA (Field Programmable GateArray) with rich logical design resources is selected as the platform, and the wireless network access system of bus carrier sensing terminal of Wi-Fi and LTE is designed in hardware and software. Thirdly, guided by the hierarchy of bus carrier sensing terminal development, based on the design of LTE and Wi-Fi software and hardware on ZYNQ platform, the driver of LTE and Wi-Fi running on ZYNQ platform is developed. The kernel configuration compile and software program transplantation are used to realize the wireless network access of the bus carrier sensing terminal and the connectivity of the wireless network access system is tested. Finally, the wireless network access system of bus carrier sensing terminal is verified. The system was carried out on the bus, and the transmission test of the vehicle perception information was carried out within the coverage of LTE and Wi-Fi.
【学位授予单位】：北京工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.44;TN929.5

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