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手持式示波器若干软件技术研究
【作者】 李静；
【导师】 王厚军；
【作者基本信息】 电子科技大学 ， 检测技术与自动化装置， 2010， 硕士
【摘要】 随着国内外测试仪器使用的日益广泛,数字存储示波器已成为现代测试领域中不可缺少的测量工具之一。手持式示波表不但继承了传统数字存储示波器的测量功能,还具有数字万用表的测量功能,它体积小、重量轻、易携带、功耗低、内置锂电池供电,特别适合于野外、机动等使用场合,可以满足现场苛刻环境下的精确测量。本论文结合“1GSPS手持式数字存储示波表”的研制,对示波表的若干软件模块进行了研究与设计。手持式示波表是以嵌入式数字信号处理器(ADSP-BF531)为核心,采用DSP+FPGA的架构,在ADI的Visual DSP++ 5.0集成开发环境下进行软件设计与开发的。本论文包括的具体研究内容如下:1.介绍了示波器的国内外发展现状,以及本项目示波表的硬件架构平台和软件总体设计流程,并针对示波表自身的特点引出所要研究的若干软件技术问题。2.讨论了示波表人机交互图形用户界面(GUI)的研究与设计,实现了主菜单结构和弹出式菜单结构的显示和控制,成功地完成了用户界面颜色自定义风格的实现、保存及装载。3.对语言字符编码方式及多国语言字库进行了研究,实现了多国语言字库的设计及动态加载,减少了字库存储资源的开销,方便地利用示波表的USB Update功能添加多国语言包。4.完成了万用表模式下界面的显示,通过趋势图的研究实现了以趋势图的方式来记录测量数据的设计方法,用趋势图来描述测量数据随时间变化的规律,用户在需要的情况下对趋势图进行展宽。
【Abstract】 With the development of domestic and foreign instrumental technology, the digital storage oscilloscope (DSO) has already been one of the indispensable instruments in modern testing field. Handheld Scope-meter not only inherits the measurement functions of traditional digital storage oscilloscope, but also has the function of digital multi-meter. It is small, light weight, easy to carry, low power consumption and built-in lithium battery supply, particularly suitable in the field, mobile and other occasions, so it can meet the harsh using environment of the precise site measurement.This paper designs the software based on the 1GSPS Handheld Scope-meter, which is developed in the Visual DSP++ 5.0 environment, basing on the framework of ADSP-BF531 and FPGA. The specific contents of this thesis are as follows:1. Introduced the developing situation of domestic and foreign oscilloscope, and the software and hardware design process of Handheld Scope-meter. According to the characteristics of Handheld Scope-meter, propose several software technical problems.2. Discussed the Graphical User Interface of Handheld Scope-meter, realized the display and control of main-menu and pop-menu structure, finally achieved the goal of saving and loading the user-defined interface color style.3. Studied the language character encoding and multi-language font library. Realized the design of multi-language font library and the dynamic loading, decreases the spending of the storage resource of font, and easy to use the USB update function to add multi-language pack.4. Completed to the display interface of multimeter mode, by studying the trend graph, implemented the design method to record and describe the variation of the measurement data with trend graph, where users could broaden the trend graph by needs.