基于BlueCore2-External蓝牙芯片的打印机设计

本文介绍了一种通过BlueCore2-External蓝牙芯片来实现Epson TM-U300打印机无线打印的设计方法,它通过PC的串口(或USB)和打印机的串口进行通信,并且只要稍作改动便可应用在其他打印机上。     

S7-200可编程控制器与微机通信的设计和实现

西门子公司的SIMATICS7-200系列是适应于中小型设备控制的微型PLC，应用领域广泛。无论是独立运行或相连成网络皆能在自动化系统中实现复杂的控制功能．强劲的通信能力使其在同类PLC产品中独具特色。本文以飞剪控制系统为例，介绍了S7-222的通信方式．着重阐述了自由口通信的参数设定、协议规划和通信程序设计。     

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.     

A new computer-assisted three-dimensional reconstruction method provides accurate measurement of glomerular mesangial volume

Many glomerulopathies are characterized by progressive mesangial (interstitial) expansion which can be quantitated by morphometric analysis. The purpose of this study was to analyze mesangial and glomerular volumes using a new computer-assisted reconstruction (CAR) method. CAR was compared to two standard planar methods, point-counting and linear integration, for accuracy and time efficiency. In Phase I of the study, a computer-based model of the mesangial space was created by placing spherical and ellipsoidal objects of known volume into an enclosing volume mimicking the glomerulus. The simulated mesangium occupied approximately 10 percent of the glomerular volume. The model glomerulus was sectioned serially into ten sections of equal thickness and the three morphometric methods applied to determine the mesangial/glomerular volume. The complexity of the mesangial model was varied by increasing the number of mesangial regions from one to ten to 100. The CAR method estimated the model mesangial volume more accurately (1–9 percent error) through each level of complexity compared to point-counting (3–17 percent error) and linear integration (3–18 percent error). The point-counting method consistently overestimated (P < 0.05) the fractional mesangial volume for the ten- and 100-region mesangium models. In Phase II of the study, a normal rat glomerulus was sectioned serially (215 sections) and a transmission electron micrograph (TEM) of every fifth section (n = 43) was obtained. Each TEM image (2% of glomerular surface) was digitized for analysis by CAR. Point-counting and linear integration were also performed on the whole glomerular TEMs (n = 10, randomly chosen). The estimated relative mesangial/glomerular volume was 6.6 ± 0.1 percent by CAR (x? ± SD), 9.7 ± 1.5 by linear integration, and 14.9 ± 3.4 by point-counting. The point-counting method was most efficient, requiring 40 ± 8 sec/section, followed by CAR at 85 ± 24 sec/section. Linear integration was least efficient (93 ± 23 sec/section). We conclude that CAR is the most accurate morphometric method of the three compared for estimating mesangial and glomerular methods, although it is more time consuming than the point-counting method and requires more complex instrumentation. CAR is the only method that will analyze the shape and three-dimensional complexity of glomerular structures using TEMs.     

DSP自举加载模式研究

这里介绍了C5409自举加载模式和串行EEPROM模式选择过程的Petri网模型，从而可以使应用DSP的工程人员对DSP的自举加载有一定的了解，在设计DSP独立系统时，达到事半功倍的效果。     

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Windows CE的PDA与数控机床通信技术的研究实现

为了进一步提高数控机床数据通信功能,促进数控车间制造信息化,将蓬勃发展的个人数字助理(Personal Data Assistant,PDA)引入制造车间;采用Windows CE操作系统,借助Microsoft embedded Visual Basic 3.0工具,设计并实现了基于PDA的数控机床通信系统.实际测试表明该系统操作简洁、易用、性能稳定可靠;并且因为PDA良好的移动性,使数控机床的通信更加方便,改变了过去以机器为中心的通信方式,这种以人为中心通信方式具有灵活、低成本和一机多用的特点.     

基于SolidWorks的相似零件快速创成

介绍了利用Solidworks软件复杂功能，建立系列零件设计表即Excel表，通过其对配置的驱动，自动生成三维相似零件，从而建立相似零件库。该方法简单实用，有效地缩短了设计时间。