可编程看门狗监控E2PROM在GXM305多用校验仪中的应用

本文简明扼要地介绍了可编程看门狗监控E^2PROM芯片X25045的功能和工作原理，并以GXM305多用校验仪中三相电压、电流测量为实例，给出了X25045与AT89C52单片机的硬件连接电路及相关的软件处理程序。     

VB中MSComm控件的设置与应用

介绍了利用VB的MSComm控件进行串行通信时的一些常用属性的设置,结合工程实例,给出了部分程序清单.     

VC下实现基于Modbus协议的DCS与远程I/O系统通信

本文在分析Modbus协议及其通信原理的基础上，结合工程实际，提出了一种在工业PC机上实现串行通信的方法，并在Visual C 6．0环境下开发了通信的应用程序，实现了基于Modbus协议的DCS与远程I／O系统通信。     

Windows下远程检测系统中单片机和微机的通讯

本文介绍了由51单片机与微机组成的远程检测系统中的通信原理、协议和实现方法。并且分别应用C51单片机语言和在Windows环境下利用VC 6．0中MSConun通信控件，实现了微机与单片机之间的双向串行通信。该方法具有实现简单可靠的特点。     

Process Stability in Serial Production of Aluminium Foam Panels and 3D Parts

Powder Metallurgy (PM) technology is emerging as one of the most promising techniques for the manufacture of net shape components and panels of aluminium foam. Control of the stability of the aluminium foaming process is one of the key issues in a serial production. Since there are many different parameters to be controlled in the raw material, the precursor and the finished foam part, the best solution is to keep all these factors in one centre of competence to exclude external influences and transporting problems. The latest material for the foaming tools plays also a decisive role concerning a high surface quality and a constant heat generation within the foam. New developments such as a precursor testing equipment or a foaming optimized furnace construction guarantees constant production conditions to be equipped for a more and more demanding market.     

An electron beam lithography and digital image acquisition system for scanning electron microscopes

A low‐cost microcontroller based control and data acquisition unit for digital image recording of scanning electron microscope (SEM) images and scanning electron microscope based electron beam lithography (EBL) is described. The developed microcontroller low‐level embedded software incorporates major time critical functions for image acquisition and electron beam lithography and makes the unit an intelligent module which communicates via USB with the main computer. The system allows recording of images with up to 4096 × 4096 pixel size, different scan modes, controllable dwell time, synchronization with main power frequency, and other user controllable functions. The electron beam can be arbitrary positioned with 12‐bit precision in both dimensions and this is used to extend the scanning electron microscope capabilities for electron beam lithography. Hardware and software details of the system are given to allow its easy duplication. Performance of the system is discussed and exemplary results are presented.     

基于ARM系统的多路气象数据串行通信设计

本文针对外场观测中多路气象数据传输和存储的要求,在一款以ARM9 S3C2440为核心处理器的开发平台上,重点对串行通信接口进行了设计。文章阐述了多路气象数据串行通信的研究背景和意义,搭建了基于ARM S3C2440处理器的硬件平台和基于Linux系统的开发环境,并在Linux下建立了针对ARM板的交叉编译环境,编写了串口通信的应用程序并对其结构进行了分析。     

基于NRF24L01远程数据采集系统的设计

介绍基于89C51单片机和DHT22数字温湿度传感器利用nRF24L01无线射频芯片构成的无线温湿度采集系统。系统采用无线分布式结构,提高了节点的可移动性、节约系统实现成本,而且易于安装和维护;同时实现了对多个温湿度测量点的循环采集和显示,并利用串行通信将采集到的数据传送到上位机进行分析处理。经检验,系统具有良好的可靠性及较高的精度。     

用PComm实现多线程串口数据接收

以PComm为串口通信组件 ,讲述了在Delphi环境下开发多线程程序的方法 ,并对因串口数据发送设备供电电源不稳定而导致的串口异常 ,提出了有效的解决方案。     

基于SD2015的HART转RS232通信卡的设计

简要介绍了在数据传输过程中上位机与下位机接口通信卡的设计,对S D 2 0 1 5的外围电路设计、HART总线、RS232协议与HART协议的转换,串口取电,HART信号的输出输入及其在工业自动化控制和工业仪表生产过程中的应用都做了简单介绍。