西门子模块化节能变频器SinamicsG120P

近日，西门子工业业务领域驱动技术集团在中国推出了专为泵、风机和压缩机应用设计的新型模块化变频器SinamicsG120P。这款紧凑型变频器有助于楼宇自动化、过程工业和水务管理行业中的物料流设备实现节能运行。SinamicsG120P具有IP55和IP20防护等级，可在恶劣的环境条件下使用。     

基于BAS的LonWorks与BACnet网关设计

现代化的智能楼宇自动化系统运用已经非常普及。但各个楼宇控制生产厂家所采用的总线标准存在着很大的差异。导致了楼宇开发商在不同的楼宇控制设备之间难以实现互操作。针对这一问题．本文在LonWorks与BACnet这两种被广泛采用的总线形式之间实现了网关的设计。该网关采用了Neuron芯片作为主处理器．使它既是LonWorks网络中的一个LON节点，也是BACnet网络中独立的设备对象．从而实现了两者的无缝连接。     

某法院楼宇设备监控系统集成方案设计

目前建筑中的智能大厦大多没有将大厦中各个设备子系统进行集中监控管理，造成设备浪费、系统效率低下等，智能大厦中的楼宇设备监控系统集成已成为一种必然。本文以某法院楼宇设备监控系统为例介绍集成方案设计，旨在给同行提供一些信息和帮助。     

GE Proficy产品在建筑智能化集成管理系统中的应用

建筑智能化应用是GEFanUC刚刚进入的崭新领域。针对民用领域的建筑智能化集成管理,提出基于GE Proficy产品的解决方案框架。解决方案在满足实现楼宇设备、系统自动化运行要求的基础上,高度集成楼宇控制自动化体系、第三方集成系统体系、综合性安全防范体系等内容,实现整个建筑的高度集成化管理应用。     

对楼宇设备监控系统设计流程的探讨

随着人民生活水平的提高，建筑楼宇智能化在我国得到了迅速的发展。作为一门新兴的学科在工程卜的应用，对我国广大工程技术人员来说，仍有许多问题需要研究探索。本文以空调机组监控系统为例，结合其工程应用实例来说明楼宇设备监控系统设计流程，并初步归纳总结了楼宇设备监控系统设计过程中的通用程序和步骤，旨在给同行提供一些有益的参考。     

EIB设备数据采集系统的设计与实现

EIB总线协议是一个开放的、分布式、面向楼宇和家庭控制的网络总线协议。文章对楼宇智能照明系统中的EIB总线进行了研究，对EIB总线协议进行分析。使用VC＋＋设计实现了串口采集EIB总线上的设备数据，并将处理后的数据通过ODBC接口保存到数据库中，设计结果完成了数据的实时和动态显示，为用户提供了一个可视化的界面，有利于数据的修改和监测，并为EIB串口通信的开发提供了一个基础平台。     

开创中国楼宇自动化控制的明天——施耐德电气楼宇自动化技术交流大会在京召开

作为施耐德电气旗下公司之一的Tour Andover Controls公司在北京举行了主题为“Exchange 2005”的楼宇自动化技术交流大会。与会的中外专家，施耐德电气高层及用户代表就日新月异的楼字自动化技术应用进行了深入探讨，并分享了在智能楼宇自控领域中的宝贵经验，同时对今后中国楼宇自动化控制的发展趋势交换了观点和意见。     

基于BACnet/WS的IBMS系统的研究

主要研究基于BACnet／WS标准草案的智能楼宇管理系统的集成问题,突破IBMS系统中的BMS、OAS、CNS各个子系统的信息共享问题。通过BACnet／WS,能有效地实现智能楼宇不同厂商设备和系统间的互操作、数据交换的平台无关性及各系统集成的灵活性和可扩展性,克服系统实现中的困难,解决信息孤岛问题。     

西门子在中国推出模块化节能变频器

西门子工业业务领域驱动技术集团在中国推出了专为泵、风机和压缩机应用设计的新型模块化变频器SinamicsG120P。这款紧凑型变频器有助于楼宇自动化、过程工业和水务管理行业中的物料流设备实现节能运行。SinamicsG120P具有IP55和IP20防护等级,可在恶劣的环境条件下使用。Sinamics G120P变频器功率范围为0.37～90 kW,包括     

浅谈智能大厦的网关设计

计算机网络在楼宇自动化系统中的作用日益突出，楼宇控制系统利用Internet进行通信已成为趋势。本文介绍了TCP/IP在智能大厦中的作用，现场总线与Internet集成的网关设计以及实现方法。     

Scalable hybrid computation with spikes

We outline a hybrid analog-digital scheme for computing with three important features that enable it to scale to systems of large complexity: First, like digital computation, which uses several one-bit precise logical units to collectively compute a precise answer to a computation, the hybrid scheme uses several moderate-precision analog units to collectively compute a precise answer to a computation. Second, frequent discrete signal restoration of the analog information prevents analog noise and offset from degrading the computation. And, third, a state machine enables complex computations to be created using a sequence of elementary computations. A natural choice for implementing this hybrid scheme is one based on spikes because spike-count codes are digital, while spike-time codes are analog. We illustrate how spikes afford easy ways to implement all three components of scalable hybrid computation. First, as an important example of distributed analog computation, we show how spikes can create a distributed modular representation of an analog number by implementing digital carry interactions between spiking analog neurons. Second, we show how signal restoration may be performed by recursive spike-count quantization of spike-time codes. And, third, we use spikes from an analog dynamical system to trigger state transitions in a digital dynamical system, which reconfigures the analog dynamical system using a binary control vector; such feedback interactions between analog and digital dynamical systems create a hybrid state machine (HSM). The HSM extends and expands the concept of a digital finite-state-machine to the hybrid domain. We present experimental data from a two-neuron HSM on a chip that implements error-correcting analog-to-digital conversion with the concurrent use of spike-time and spike-count codes. We also present experimental data from silicon circuits that implement HSM-based pattern recognition using spike-time synchrony. We outline how HSMs may be used to perform learning, vector quantization, spike pattern recognition and generation, and how they may be reconfigured.     

Embedded hardware low cost JPEG 2000 video coding system

In this paper, we introduce an embedded hardware low complexity JPEG 2000 video coding system. The hardware implementation itself exploits temporal redundancy by coding differential frames which are arranged in an adaptive group of picture (GOP) structure. The GOP structure is determined by statistical analysis of previously coded differential frames. We present a hardware video coding system that applies this interframe coding scheme to a digital signal processor environment. This system basically consists of a microprocessor (ADSP-BF533 Blackfin processor from analog devices) and a JPEG 2000 compression engine (ADV202). Our straightforward system is predestined for encoding surveillance-type videos with low cost.     

无人机协助的多用户MIMO毫米波网络混合预编码方案

针对无人机（UAV）协助的毫米波网络下行链路多用户通信场景,设计一种混合预编码方案。在发射端和接收端分别使用混合预编码器和模拟合并器,并将多元联合优化问题分解为子问题进行求解。构建UAV与地面用户的三维位置模型,利用带外位置信息对波束导向向量进行优化,进而通过码本生成模拟预编码器和模拟合并器。以最小化接收数据和发送数据之间的误差为目标,利用卡尔曼滤波算法设计基带预编码器,从而减少用户之间的干扰。仿真结果表明,该方案相比模拟波束成形方案、数字预编码方案和迫零混合预编码方案可有效提升系统频谱效率和能量效率。     

Emulation of complex open quantum systems using superconducting qubits

With quantum computers being out of reach for now, quantum simulators are alternative devices for efficient and accurate simulation of problems that are challenging to tackle using conventional computers. Quantum simulators are classified into analog and digital, with the possibility of constructing “hybrid” simulators by combining both techniques. Here we focus on analog quantum simulators of open quantum systems and address the limit that they can beat classical computers. In particular, as an example, we discuss simulation of the chlorosome light-harvesting antenna from green sulfur bacteria with over 250 phonon modes coupled to each electronic state. Furthermore, we propose physical setups that can be used to reproduce the quantum dynamics of a standard and multiple-mode Holstein model. The proposed scheme is based on currently available technology of superconducting circuits consist of flux qubits and quantum oscillators.     

基于多中继散射组网的时钟恢复方案

由于目前存在的准同步时钟恢复方案不能够满足多中继散射通信的抖动指标,所以提出一种在多中继的散射信道中的低抖动时钟恢复方案。该方案由一个数字锁相环和一个模拟锁相环共同实现,即双环提取方案。数字锁相环主要是利用定时误差恢复出一个存在抖动的时钟,再由模拟锁相环对恢复出的抖动时钟进一步提纯。传统时钟恢复方案的误差为输入码率下的一比特时长,该新型方案将提高误差精度,从而大大降低在多中继传输中的时钟抖动,这将是散射通信组网的关键技术。     

数字签名认证在DVD版权保护中的应用研究

提出了一个基于DSA数字签名认证的DVD数字接口方案,探讨了对设备的合法性进行身份认证的研究,保证了数据的完整性,并有较强的安全性。     

基于DSP和FPGA的全场景试验终端参数管理系统设计

面向电磁式互感器的全场景试验系统是用于变电站二次设备分布式测试系统,该系统的子终端由数字控制模块、接口模块和模拟量输出模块构成。为了保证子终端能较好的保持模拟量输出的精度和同步性,该系统利用DSP和FPGA器件实现了终端运行参数的管理系统,可以方便地实现终端运行参数的修改、保存和实时分配。     

Frequency domain testing of ADCs

Aimed at design and test engineers making the transition from strictly digital devices to devices with both digital and analog content, this tutorial introduces frequency domain analysis for the testing of mixed-signal devices. The author describes dynamic testing of analog-to-digital converters using Fourier analysis, including coherent sampling techniques. He also covers the challenges of implementing these techniques in a real system and analyzing results to identify problems     

Tracking error in digitized analog video: automatic detection and correction

In the last half century the most used video storage devices have been the magnetic tapes, where the information are stored in analog format based on the electromagnetism principles. When the digital technique has become the most used, it was necessary to convert analog information in digital format in order to preserve these data. Unfortunately, analog videos may be affected by drops that produce some visual defect which could be acquired during the digitization process. Despite there are many hardware to perform the digitization, just few implement the automatic correction of these defects. In some cases, drop removal is possible through the analog device. However, when a damaged already-converted video is owned, a correction based on image processing technique is the unique way to enhance the videos. In this paper, the drop, also known as “Tracking Error” or “Mistracking,” is analyzed. We propose an algorithm to detect the drops’ visual artifacts in the converted videos, as well as a digital restoration method.     

电容层析成像系统中的数字相敏解调技术

相敏解调是电容层析成像(ECT)系统中的关键环节。传统的模拟解调存在着精度低、噪声大和模拟器件的稳定时间过长等问题,成为进一步提高ECT系统精度和速度的"瓶颈"。为此,设计了一种基于FPGA的数字相敏解调方法,实现了快速、高精度的有符号数字相敏解调。验证显示,设计的数字化相敏解调完全满足ECT系统对精度和速度的要求。