This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mid-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 图Figure 1. Local Safety System
上传时间： 2013-11-14
上传用户：zoudejile
protel 99se 使用技巧以及常见问题解决方法：里面有一些protel 99se 特别技巧，还有我们经常遇到的一些问题！如何使一条走线至两个不同位置零件的距离相同? 您可先在Design/Rule/High Speed/Matched Net Lengths的规则中来新增规则设定,最后再用Tools/EqualizeNet Lengths 来等长化即可。 Q02、在SCHLIB中造一零件其PIN的属性，如何决定是Passive, Input, I/O, Hi- Z,Power,…..？在HELP中能找到说明吗？市面有关 SIM？PLD？的书吗？或贵公司有讲义？ 你可在零件库自制零件时点选零件Pin脚,并在electrical Type里,可以自行设定PIN的 属性,您可参考台科大的Protel sch 99se 里面有介绍关于SIM的内容。 Q03、请问各位业界前辈,如何能顺利读取pcad8.6版的线路图,烦请告知 Protel 99SE只能读取P-CAD 2000的ASCII档案格式,所以你必须先将P-CAD8.6版的格式转为P-CAD 2000的档案格式,才能让Protel读取。 Q04、请问我该如何标示线径大小的那个平方呢 你可以将格点大小设小,还有将字形大小缩小,再放置数字的平方位置即可。 Q05、请问我一次如何更改所有组件的字型 您可以点选其中一个组件字型,再用Global的方法就可以达成你的要求。
上传时间： 2015-01-01
上传用户：yxgi5
Introduction to Xilinx Packaging Electronic packages are interconnectable housings for semiconductor devices. The major functions of the electronic packages are to provide electrical interconnections between the IC and the board and to efficiently remove heat generated by the device. Feature sizes are constantly shrinking, resulting in increased number of transistors being packed into the device. Today's submicron technology is also enabling large-scale functional integration and system-on-a-chip solutions. In order to keep pace with these new advancements in silicon technologies, semiconductor packages have also evolved to provide improved device functionality and performance. Feature size at the device level is driving package feature sizes down to the design rules of the early transistors. To meet these demands, electronic packages must be flexible to address high pin counts, reduced pitch and form factor requirements. At the same time,packages must be reliable and cost effective.
上传时间： 2013-11-21
上传用户：不懂夜的黑
15.2 已經加入了有關貫孔及銲點的Z軸延遲計算功能. 先開啟 Setup - Constraints - electrical constraint sets 下的 DRC 選項. 點選 electrical Constraints dialog box 下 Options 頁面 勾選 Z-Axis delay栏.
上传时间： 2013-11-12
上传用户：Late_Li
AutoCAD® electrical 软件提供的工具扩展了 AutoCAD® 的功能，可快速建立和管理电子控件图形集。本手册提供了可帮助您入门的基本信息，还提供了一些练习，向您介绍 AutoCAD electrical 的功能。
上传时间： 2013-10-17
上传用户：gxy670166755
Q01、如何使一条走线至两个不同位置零件的距离相同? 您可先在Design/Rule/High Speed/Matched Net Lengths的规则中来新增规则设定,最 后再用Tools/EqualizeNet Lengths 来等长化即可。 Q02、在SCHLIB中造一零件其PIN的属性，如何决定是Passive, Input, I/O, Hi- Z,Power,…..？在HELP中能找到说明吗？市面有关 SIM？PLD？的书吗？或贵公司有讲义？ 你可在零件库自制零件时点选零件Pin脚,并在electrical Type里,可以自行设定PIN的 属性,您可参考台科大的Protel sch 99se 里 面有介绍关于SIM的内容。 Q03、请问各位业界前辈,如何能顺利读取pcad8.6版的线路图,烦请告知 Protel 99SE只能读取P-CAD 2000的ASCII档案格式,所以你必须先将P-CAD8.6版的格式 转为P-CAD 2000的档案格式,才能让Protel读取。
标签： Protel
上传时间： 2013-11-07
上传用户：tangsiyun
西门子建筑电器-电气安装技术部发行的各类产品样本：小型断路器、剩余电流保护断路器和模数化产品(中/ 英文)Miniature Circuit-Breakers, Residual Current Operated Circuit-Breakers and Modular Devices (Chinese/English)低压熔断器系统(中/ 英文)Fuse System (Chinese/English)雷击，过电压－不再是问题(中文)Thunderstorms - no problem (Chinese)西门子建筑电器目录(中文)electrical Installation Technology Catalog (Chinese)终端配电保护产品(中文)5 IN 1 (Chinese)SIKUS 和 STAB UNIVERSAL 目录(中文)SIKUS and STAB UNIVERSAL Catalogue (Chinese)SIKUS HC 目录(中文)SIKUS HC Catalogue (Chinese)SentronTM 母线槽 (中文)SentronTM Busway System (Chinese)SentronTM 母线槽系统快速选型 (准备中) (中文)SentronTM Busway System quick selection (in preparing) (Chinese)建筑低压配电一体化解决方案－住宅小区应用(中文)Building LV PD Solution (Chinese)西门子 DELTA vista“远景”系列开关和插座价目表(中文)Delta vista Switch and Socket Pricelist (Chinese)instabus EIB 面向未来的楼宇智能控制系统(中文)instabus EIB (Chinese)instabus EIB 面向未来的楼宇智能控制系统技术手册 (准备中) (中文)instabus EIB technical handbook (in preparing) (Chinese)西门子电气安装技术业绩卓越(中/ 英文)ET Reference Manual (Chinese/English)
上传时间： 2013-11-23
上传用户：瓦力瓦力hong
Modern electronic systems solve so many difficult problems that they often seem like magic. Nonetheless, these systems all have thesame basic limitation: they need a source of electrical power! Most of the time this is a straightforward challenge for the electronicdesigner, because there are many power-delivery solutions. Yet sometimes a device has no direct power source, and running wiresor replacing batteries is impractical. Even when long-life batteries are usable, they eventually need to be replaced, which requires aservice call.
标签： 能量收集
上传时间： 2015-01-03
上传用户：zukfu
wcdma的多径环境下的上下行仿真，EITS标准，written by The Mobile and Portable Radio Research Group The Bradley rtment of electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg, Virginia
上传时间： 2015-05-13
上传用户：225588
使用pso求最小化一函數 matlab程式碼，寫的非常簡潔(不到100行)，且還包括了2維的圖形展示，和大家分享參考!!! 一起學習matlab和各種optimize methods 最小化：(x-15)^2+(y-20)^2 The swarm matrix is swarm(index, [location, velocity, best position, best value], [x, y components or the value component]) Author: Wesam ELSHAMY (wesamelshamy@yahoo.com) MSc Student, electrical Enginering Dept., Faculty of Engineering Cairo University, Egypt
上传时间： 2013-12-18
上传用户：zhaiye
