基于串并口技术的围墙安防报警系统设计

本文介绍了基于串并口技术的围墙安防报警系统的设计方法,分析了其工作原理及工作流程,并介绍了利用C++实现软件设计的方法。

基于串并口技术的智能安防报警系统的设计和实现

本文首先介绍了智能安防报警系统 (IPAS)的组成和工作原理 。

C54X DSP的HPI与PC机并口技术研究

本文介绍了TI TMS320C5402 DSP通过自身HPI(主程序接口)接口与PC机并口(EPP)进行连接的设计方案。该方案充分利用了DSP的HPI接口功能,实现了PC机实时读写DSP任意片内存储单元的内容,在高级语言下完成了对DSP应用系统的监控。

Windows环境下脑机接口视觉刺激器的设计

给出了基于视觉诱发电位的脑-机接口模式的方案,该方案的关键部分是视觉刺激器的实现,它提供了用户利用脑电信号识别字符所需的多种刺激模式。在Windows环境下,以闪烁的不同小块代表多种可能的选择,受试者注视其中一个目标,分析诱发电位可判别受试者所注视的目标。实测显示,视窗中的目标图像同时运动时,平滑稳定、无抖动现象,时间精度达到设计要求的1ms,实时向并口输出数据,该方案能有效地诱发出可识别的具有特征性的视觉诱发电位。

A Parallel Finite Element Algorithm for Navier-Stokes Equations

The authors propose a numerical algorithm for the two-dimensional Navier-Stokes equations written in stream function-vorticity formulation. The total time derivative term is treated with a first order characteristics method. The space approximation is based on a piecewise continuous finite element method. The proposed algorithm is used to simulate the mechanical aeration process in lakes. Such process is used to combat the degradation of the water quality due to the eutrophication phenomena. For this application high computing facilities and capacities are required. In order to optimize the computing time and make possible the simulation of real applications, the authors propose a parallel implementation of the numerical algorithm. The parallelization technique is performed using the Message Passing Interface. The efficiency of the proposed numerical algorithm is illustrated by some numerical results.