【作者】 陈鼐；

【导师】 于盛林；

【作者基本信息】 南京航空航天大学 ， 测试计量技术及仪器， 2007， 硕士

【摘要】 随着计算机技术、网络技术和微电子技术的深入发展,特别是各种高性能片上系统(SoC)的设计和嵌入式操作系统的开发,嵌入式系统日益广泛地应用于工业控制、移动通讯、家用电器以及消费电子等设备中。本文研究嵌入式系统在数据采集与处理中的具体应用,采用结构化、模块化的方案进行系统的软硬件设计、调试和实现,开发了一个集嵌入式控制、高速数据采集与处理、友好人机交互界面于一体的通用测试平台。课题以ARM9嵌入式微处理器S3C2410X为核心,基于QT2410开发板设计了数据采集硬件电路,包括8路模拟输入通道和16位数字I/O通道。在ADS集成开发环境下设计了AD7892的定时采集、连续采集,数字I/O,LCD显示及触摸屏控制等程序模块,并实现了一些简单的数据处理和FFT谱分析功能。实验表明,AD7892采样速率可达100 kSPS以上,具有一定的实时性。借助于移植的嵌入式Linux操作系统,开发了GPIO、按键、LCD模块以及数据采集电路的设备驱动程序和应用程序。论文的最后介绍了嵌入式图形用户界面MiniGUI的移植与开发,并设计图形程序实现了数据的采集、处理和波形的实时显示功能。实践表明,嵌入式Linux下的MiniGUI高效、稳定,占用资源少,人机界面友好,可靠性高。基于ARM的嵌入式数据采集与处理系统结构清晰、通用性好、可扩展性强,可为各种嵌入式应用提供一套完整的硬、软件解决方案,在工业测量与控制领域具有较为广阔的应用前景。更多还原

【Abstract】 With deep-going development of computer, network and micro-electronics technologies, as well as design of SoC and development of embedded OS, embedded system is increasingly widely used in industrial control equipment, mobile communication device, household appliance and consuming electronics, etc.As an application of data acquisition and processing, embedded system is researched in this thesis, hardware and software is designed, debugged and implemented with structured and modularized scheme. A universal testing platform is developed, integrating embedded control, fast data acquisition and processing and friendly human machine interactive interface.Hardware circuit for data acquisition is designed based on QT2410 develop board with ARM9 microprocessor S3C2410X at the core, including 8-channel analog input and 16-bit digital I/O channel. Programme modules including timing and continuous acquisition of AD7892, digital I/O, LCD display and touch screen control are designed with ADS, as well as simple processing and FFT. Experimental result shows that the sampling rate of AD7892 can reach upwards of 100 kSPS, being real time to some extent.By virtue of embedded Linux transplanted to ARM, device drivers and applications for GPIO, key, LCD module and data acquisition circuits are developed. The last part of this thesis introduces the transplant and development of MiniGUI, and graphics programme is designed for data acquisition and processing, real-time display of waveform. Practice has proved that MiniGUI is extremely efficient, stable, lightweight and friendly with high reliability.Embedded data acquisition and processing system based on ARM has well-defined architecture, good universality and extensibility. It could provide an integrated hardware and software solution for various embedded applications. Also, it has a wide application prospect in the field of industrial measurement and control.更多还原