基于PXA255的手持示波器的设计与实现

Implementation of Handheld Oscillograph Based on PXA255

介绍一个手持式示波器的设计与实现。信号采集卡为独立硬件,负责采集数据,通过网络接口传给开发板,开发板负责数据处理以及用户交互。本项目采用了基于Intel PXA255的开发板,软件平台采用Linux操作系统。由于轻便小巧,其功能可以替代普通示波器,具有手持设备和虚拟仪器的优点。结合实例介绍了使用Qt/Embedded图形库进行软件开发。对基于Linux的嵌入式系统应用开发有很好的借鉴意义。

This article illustrates the design and implementation of a handheld oscillograph, which may run in the context of an embedded system that features the intel PXA255 processor and the embedded Linux OS. The signal sampling card, working as a separate hardware, is used to sample data and send them to the development board through network interface, while the development board is used to process data and interact with users. For it＇s small and portable, when working as an oscillograph, the product is integrated the advantage of portable facilities and virtual instruments. The procedure of software development using Qt/Embedded is also presented in some detail.