PC机和80C196KC单片机之间串行通信的实现

介绍了一种湿型砂质量测试系统中PC机和 80C196KC单片机之间串行通信的实现方法。该方法是基于WINDOWS开发环境 ,依据RS - 2 32串行通信协议 ,运用VisualC 6 .0提供的通信控件MSCOMM和汇编语言得以实现的 ,它能够及时地把 80C196KC单片机采集到的原始数据传送至PC机 ,在PC机进行数据处理完后又将处理结果送回 80C196KC单片机 ,从而实现了PC机与 80C196KC单片机之间原始数据和处理结果的有效传送。     

基于USB总线的PC机与单片机的通信

介绍了通过USB总线在PC机与单片机之间通信的实现方法。简述了USB总线的工作方式,详细描述了单片机实现通信的编程思想。并以Philips公司的控制芯片为例,通过单片机数据总线,实现PC机与单片机之间原始数据和处理结果的有效传递,最后给出了部分程序的实现。     

PIC单片机与PC机串行通信的实现

PIC系列单片机作为一款外设丰富性能优良的单片机,被广泛应用于各种控制系统。在微机测控系统中,用作上位机的PC机系统与用作下位机的单片机之间经常要进行信息交换。为此提出了一种基于Visual C++的PIC18F452单片机与PC机之间串行通信的实现方法,给出了硬件电路图和通信源程序,调试实验表明,硬件设计与软件开发达到了预期的功能要求。该方法为PIC单片机与PC机间串行通信的应用提供了良好的参考。     

用V B实现计算机与单片机的串行通信

给出了使用VB控件,实现PC机与8031单片机之间串行通信的编程方法,并给出了个用VB实现PC机同8031通信的应用实例.     

自制RS485/RS232转换器实现PC机和单片机之问的串行通信

RS485是一种具有高抗干扰能力、适合远距离通信的串行通信方式.作者在电参数测试议的设计中,采用自制的RS485/RS232转换器实现了单片机和PC机之间的高速、远距离、高可靠的通信.文中详细叙述了单片机和PC机之间硬件接口电路的设计、RS485/RS232转换器的制作,以及软件设计时必须注意的一些问题.     

PC机与AVR单片机之间串行通信的实现

基于RS232串行通信协议，阐述了一种PC机与AVR系列单片机Atmega128之间串行通信的实现方式，实现了PC机与单片机间数据的双向传输。其中PC机为主发送端，单片机为主接收端。硬件上，简单介绍了利用MAX232E芯片解决PC机与单片机电气规范不一致的方法。软件上，PC机端通信程序采用C语言嫡程，运用Turbo C库函数bios.h中提供的调用BIOS软中断的函数bioscom()实现；单片机端通信程序采用C51嫡程，使用UART接收结束中断、UART发送结束中断。本文提供了相关C语言和C51源程序。     

基于MODEM的单片机与PC机间的远程通信

公用电话网技术成熟、覆盖范围广，利用现有的公用电话网来实现单片机与PC机远程通信是一种非常有效的方法。本文详细介绍利用现有公共电话网实现8098单片机与远程PC机之间数据通信的硬件、软件设计和实现方法。     

基于VC++6.0的PC机与单片机之间的串行通信

介绍了在Windows系列（Windows 98/2000/XP）环境下，如何利用VC^ 6.0的通信控件MSComm来实现PC机与单片机之间的串行通信。硬件电路中，采用MAX232AESE芯片解决了PC机与单片机之间通信连接电平的不一致问题；软件部分，分别利用VC^ 6.0的汇编语言，给出了他们之间的通信程序。     

Delphi环境下利用SPComm控件进行单片机串口通信

串口是PC机上的标准设备,采用串口方式与单片机通信不需在PC机上增加任何硬件,因此利用串口跟单片机通信得到了广泛应用。概述了单片机与PC机间串行口通信的基本原理,介绍了SPComm控件的安装和其主要属性、方法和事件,以及在Delphi环境下PC机利用SPComm控件与单片机进行串行口通信的实现。     

PC与单片机多机RS232串口通信设计分析

本文对RS232串口通信原理进行分析,针对PC和单片机串口通信进行设计和分析,对连接框架、软件设计方法加以阐述,并对通信实现的方式进行展现。通过本文研究,可使单片机与PC机之间实现顺畅高效传输,通信质量和效率得到显著提升。     

基于PL-2301实现网络隔离下的双机通信

在网络隔离环境下,基于空间置换与协议转换的隔离方法,讨论了两台及两台以上计算机系统之间信息共享和数据传输的功能实现。通过介绍USB通信协议结构、PL-2301芯片电路结构,以及WMD硬件驱动设计,提出了一种基于USB接口的双机通信解决方案,并应用Prolific公司的PL-2301芯片建立起部门内部不同保密等级网络间的双机通信软硬件系统。     

适用于PC之间通信的红外收发器

介绍红外通信的传输规范及基本设计特点,设计一种基于MSP430F1222型单片机的用于PC之间通信的红外收发器,给出硬件电路和部分软件程序.     

一种基于数据队列的远程网络数据通讯方式

本文介绍了一种利用数据队列技术实现远程网络数据通讯的方式。该方式实现了微机与小型机之间的远程数据实时通讯，并在AS／400小型机与微机的网络系统中得到应用，已实际用于OCR税务申报系统中。文中介绍了数据通讯系统数据队列的特点、数据队列的设计及数据队列在多对一的双向数据交换网络中的实现及其在OCR税务申报系统中的应用。     

一种宽带光总线互连网络机群系统设计

介绍了一种宽带光总线互连网络机群系统。该系统利用宽带多层自由空间光学数据总线和VCSEL/MSMCMOS光电子集成器件实现4台计算机之间互连。专用通讯适配器实现高性能并行接口(high performance parallel interface,HIPPI)到外设部件互连(peripheral component interconnection,PCI)协议转换。该系统光互连网络传输容量可达60Gbit/s,可用于计算机之间的高速通讯。     

Development of a MAGLEV superconducting magnet for the Yamanashitest line in Japan: vibration characteristics and analysis for design

A high-performance and high-reliability magnetically levitated (MAGLEV) superconducting magnet (SCM) was developed. Its heat generation per unit time by the electromagnetic forces due to the spatially fifth ripple magnetic fields from levitation coils is under 2 W at the frequency range in which vehicles are levitated. The vibration mode of inner vessels that makes the largest contribution to heat generation in SCMs is clarified, the torsion mode. A modeling method to analyze SCM vibration, which considers the effect of the bogie frames of a vehicle, is examined, and heat generation in SCMs is calculated from the vibration of the inner vessel. Using the numerical analysis method, new SCMs combined with new bogie frames for the Yamanashi Test Line are designed. Good performance in vibration and heat generation of these SCMs is predicted by numerical analysis     

高速异步串行通信的实现

本文较详细地介绍了能够实现高速异步串行通信芯片82C52的特性、使用方法和使用过程中应注意的事项，并应用该芯片在两台PC机之间成功地实现了1MHz波特率的异步串行通信。     

Design and analysis of a low-noise saw-less receiver front-end resistant to strong out-of-band blocker

Regulatory changes to spectrum management frameworks in the U.S. and worldwide are promoting the use of dynamic spectrum access (DSA) and spectrum sharing mechanisms. Wireless service environments that use these mechanisms will rely heavily on radio interference control and management techniques to coordinate the boundaries of spectrum use for devices owned/managed by different entities. To communicate the characteristics and limits of spectrum use of an RF transmitter, receiver, system or collection of systems, a common data structure to represent this information must be in place. Spectrum consumption models (SCMs) attempt to capture this information and support a set of computations that allow for the determination of the compatibility of the use of spectrum between devices and/or systems that communicate the characteristics of their use of spectrum with these models. SCMs are currently being standardized within the IEEE DySPAN-SC 1900.5.2 workgroup. This paper presents our results and ongoing efforts in developing an open source tool for the construction and analysis of SCMs as a means to promote their use and showcase their potential for enhancing spectrum sharing and DSA interactions.     

基于软交换的核心网网络优化研究

随着智能手机、平板电脑等移动终端的出现,人们越来越倾向于使用方便易携的移动终端进行各项业务,导致了移动用户数量剧增。这对通信技术提出了更高的要求。如何在有限的网络资源中解决不断增加的用户数量而导致的各种通信要求的矛盾,是目前通信技术主要面临的考验。为了解决这一矛盾,进行网络优化势在必行,软交换技术作为通信网络发展的主要方向,本文主要研究了在软交换核心网下的网络优化相关问题。     

Applications of Self-Collimated Properties of Photonic Crystal in 3D Imaging Lidar System

Photonic crystals(PCs)are increasingly attracting attention due to their ability to control light propagation.In this paper,the dispersion properties of a two-dimensional(2D)square lattice PCs with plane-wave expansion(PWE)method are presented,the equi-frequency contours and the band structure are analyzed,and the alignment transmission characteristics are simulated by using the finite difference time domain(FDTD)method,in addition,for the wavelength of 1.55μm,a kind of application structure with the lattice constant a=405nm and the radius of air holes R=135nm which can restrict the transmission of beams in photonic crystal without defect is proposed and simulated.The structure which can collimate the output beam and compress its divergence angle is easy to design.It has wide application prospects in optical communication and three-dimensional(3D)imaging lidar systems.     

Uniform Polarization Scattering With Fiber-Coil-Based Polarization Controllers

A detailed study of fiber-coil-based polarization controllers (PCs) is performed. First, a method to deterministically calculate the PC configuration in order to transform between any two states of polarization is presented. In a second stage, the case in which the configuration angles are randomly changed is studied. The cases of a single PC and of the system obtained with the concatenation of several PCs are analyzed. For both cases, a general expression for the variance of the Stokes parameters is obtained. Using this expression, it is demonstrated that it is possible to achieve uniform polarization scattering using a concatenation of fiber-coil-based PCs. Finally, it is shown that fiber-coil-based PCs can be used to emulate both first- and second-order polarization-mode dispersions