基于物联网数据采集系统软件设计-电子与通信工程专业论文.docxVIP

摘 摘 要 I I 摘 要 随着物联网技术的使用范围越来越广，物联网数据采集系统因为位于现实世 界与后续数据应用的连接部分，也显得越来越重要。目前关于物联网数据采集系 统的研究普遍都针对某一具体领域，而对通用的物联网数据采集系统研究较少。 本文以基于物联网的采集系统软件设计为研究课题，对物联网采集系统一般会涉 及到的功能需求进行讨论和归纳，并对这些功能进行设计和实现，完成了一个具 有一定通用性的物联网数据采集系统软件设计。 本采集系统使用了基于 ARM 内核的开发板进行软件开发，首先对 Linux 内核 进行裁剪并移植嵌入式 Linux 操作系统到开发板。然后在操作系统上完成了物联网 应用所需的外部功能，包括程序在各种情况下的自启动，触摸屏的开启，数据传 输所需的移动网络拨号。最后完成物联网数据采集应用的设计和实现。 本文先对物联网数据采集系统进行功能需求分析，然后使用 Qt Creator 工具对 物联网数据采集应用进行开发，使用了 Qt 的部分 API。设计的物联网采集系统应 用分为两部分：数据采集和数据传输。数据采集部分实现了基于 Modbus 协议的传 感器数据采集，基于 V4L2 框架的视频采集，视频的 H.264 硬件编码压缩，JPEG 图像压缩，数据库表设计以及身份信息同步等内容。数据传输部分实现了拨号联 网功能，基于 UDP 传输协议的数据传输功能，基于 TCP 传输协议的视频传输功能， MJPG_STREAMER 实时视频传输和 Zigbee 短距离数据传输等内容。最后论文还对 人机交互界面进行实现，并移植了虚拟键盘。 在完成物联网数据采集系统的软件设计和实现后，本文对系统做了功能和性 能测试，达到预期目标。 关键词：嵌入式 Linux，物联网数据采集，数据传输，Qt Creator AB ABSTRACT II II ABSTRACT With the using of networking technology is more and more widely, the Internet of things system whitch is located between the real world and the subsequent data applications, becomes more and more important. At present, the research on the Internet of things system generally is directed at a specific area, while the research of universal networking collection system is less common. Design of data acquisition system software in this thesis is based on the Internet of things as the research subject, the functional requirements which are involved in IOT acquisition systems are in discussion and summary. These functions has been designed and implemented, and a good general IOT data acquisition system software design has been completed. System software has been developed in the hardware development board with ARM chips. The Linux kernel has been cut and the embedded Linux operating system has been transplanted to the development board. Then the external functions of the application have been developed in the operating system. The design of IOT Data acquisition application has been completed finally. Analysis of the function of data acquisition system of the IOT has been completed in this thesis