基于DirectShow的MPEG4网络视频流处理系统

介绍了一种基于DirectShow的MPEG4网络视频流处理系统。该系统采用Microsoft DireaShow框架技术,接收以MPEG4压缩的网络视频流,对视频流进行切帧、实时解码和播放。系统的关键技术是DirectShow Source Filter的设计和实现。     

移动式加速器中子源控制系统的设计与研制

运用数字化处理、计算机网络、光纤通信等先进技术,实现对移动式加速器中子源的远程控制。该系统运行稳定、操作性强,很好地满足了用户的实验需求。     

CSR外靶实验数据获取原型系统设计

介绍了为兰州重离子加速器冷却储存环外靶实验设计实现的一套数据获取原型系统。系统借鉴流处理、Map-reduce和Bigtable等技术或模型的思想,采用一套流处理节点构成的网络完成数据获取任务。系统支持对流处理网络拓扑结构自由调整,灵活地实现并行处理和负载均衡。同时通过为不同类型探测器定义接口标准以及支持用户自定义节点添加,实现大型物理实验调试和实验过程中的各种数据获取需求。目前系统已与探测器及前端电子学一起进行了一系列联合测试,验证了系统的可行性和稳定性。     

基于ZigBee技术的环境γ辐射连续监测系统研究

本系统利用ZigBee无线网络技术,以最经济的成本、最可靠的性能,实现对核电厂周围环境γ辐射进行连续监测.为提高数据传输的可靠性,系统采用了由中心节点、监测中继站、监测子站组成的三级网状网络结构.文中详细介绍了监控网络中各级网络的建立,各终端监测节点的设计,上位机数处理系统的实现方法.     

多功能网络化核数据获取和处理系统

应用网络技术将多个功能不同、相互独立的以PC微机为基础组成的核数据获取和处理子系统有机互联,组成了一种新型的多功能网络化核数据获取和处理系统,探讨了系统的最佳组成模式、工作原理及实现方法,给出了系统在2．5MeV静电加速器上进行团簇特性研究的初步结果。     

10MW 高温气冷实验堆的地震监测系统

为了保障地震发生时10MW高温气冷实验堆（HTR－10）的正常运行和安全停堆,设置了地震监测系统。该系统按无人值守方式设计,主要由高灵敏度的加速度传感器、高可靠性的工业控制计算机和成熟的地震分析软件组成,信号采集处理采用了最新技术。系统监测三个测点的九路加速度时程信号,判断为地震信号后计算峰值加速度,超过报警阈值时向主控室提供声光报警信号;系统同时计算响应谱和设计响应谱,并与理论设计响应谱进行比较,最后打印出地震报告。抗震试验和性能试验结果表明,该系统符合抗震设计要求,其功能覆盖并超过了组合使用的多种地震监测仪表。     

应用于集装箱检查系统的互逆式客户/服务器处理技术

提出一种新型的分布式网络处理技术，即互逆式客户/服务器处理技术，结合该技术在“同方威视”集装箱检查系统中的成功应用，介绍了该技术的特点和优势，阐述了用这种新技术进行网络程序开发的策略和原则，并提出了用该技术进行集装箱检查系统软件开发的一个范例。     

核电安全级DCS系统多节点通信网络容错技术的开发及应用

为保证核电安全级DCS系统中控制站、安显站、网关站等之间双向、大容量数据的可靠通信,本文设计了一种基于光纤通信技术的多节点通信容错技术,并详细介绍了该光纤通信容错技术的设计方案及实现方法。该方案采用光开关切换技术灵活改变光传输路径,支持多节点通信网络容错通信,在多节点通信网络中某一个或多个节点发生故障时,不影响其他节点的正常通信,可灵活配置和管理多节点通信动态光路径切换,实现了核电安全级DCS系统中站与站之间的通信效率,提高了产品的可靠性和可用性,实现了多节点通信网络的容错设计。     

VIC068A在电源控制系统中的应用

VME总线为单处理器或多处理器的高速并行传输建立了标准体系规范,利用桥接芯片VIC068A的硬件逻辑连接实现网络处理芯片与VME背板总线之间的通讯,将后台计算机数据库及前端设备通过网络和VME总线紧密地连接起来,实现数据的快速获取与给定.     

基于PLC的核电循环水外购加药控制系统研发

为避免核电循环水处理系统加药中断问题，可通过增加加药装置，实现外购的高浓度次氯酸钠加药，增加一套PLC控制系统，通过网络交换机和原控制柜内的网络交换机连接，实现与原主控系统进行实时数据交换，既能保留了原有系统的功能，又能实现新增系统的各种过程控制及联锁保护，提高了电站运行的可靠性和稳定性。     

卫星遥感及其应用的发展态势

简述了卫星遥感传感器分辨率、辐射精度、卫星运行模式、载荷形式、数据处理，以及遥感应用等方面的最新进展，卫星遥感传感器分辨率显著提高，多传感器的有效集成是21世纪卫星遥感的新概念和新技术。后遥感应用技术是遥感技术深化应用的重要组成部分，具有重要的实践意义。     

高光谱遥感技术在岩矿识别中的应用现状与前景

介绍了高光谱遥感技术,包括高光谱遥感进行岩矿光谱识别的物理机理和提取的光谱参数、高光谱数据处理和分析技术的发展现状、高光谱测量仪器简单介绍,以及高光谱在资源勘查领域中的应用及其发展方向。     

遥感数据及航放、航磁数据处理浅析

以某区遥感数据、航放数据和航磁数据处理为例,阐述了遥感数据处理的基本思路、波谱特征分析及采用的处理方法;探索了遥感数据与航放数据、航磁数据融合的处理方法;分析了其处理成果的地质意义.它不仪对研究区地质环境研究及铀矿找矿具有一定意义,而且对其他地区的应用也有参考价值.     

EAST嵌入式数据采集系统设计

介绍了EAST核聚变装置中嵌入式数据采集系统的设计,该系统基于FPGA和ARM技术,集成信号调理、数据采集和数据处理于一体,便于放置于实验现场进行采集,具有较高的集成度和便捷性。同时,针对聚变实验的稳态运行,该系统引入了时间片技术,实现了长时间采集和数据实时传输。     

基于Oracle的高光谱数据管理平台设计与应用

高光谱遥感数据具有海量、高维、图谱合一等技术特点,随着数据量的增加,传统的文件管理方式越来越无法满足实际的需要。本文提出了将高光谱遥感数据按像元顺序或者波段顺序分割,按大型对象存储的技术思路,设计了高光谱遥感数据的存储结构,并开发了相应的数据管理平台。实际应用表明,该平台能够较好地完成高光谱数据的存储、管理与查询,取得了理想的应用效果。     

ITER remote maintenance system configuration model overview

A challenge for the ITER project is to manage the design of many systems being developed in parallel. In order to control the machine configuration and ensure proper design integration, the ITER project has implemented the so-called “configuration management models” (CMMs), aimed at controlling and managing the machine systems’ interfaces. Specific issues are raised for modelling the ITER remote maintenance system (IRMS). That system shall provide the mean to support the remote maintenance operations for in-vessel components, remote transfer of activated components between the vacuum vessel (VV) and the hot cell facility and remote repairing, refurbishing and/or processing operations in the hot cell facility.The IRMS are dynamic, constantly changing morphologies, working envelopes and locations within the plant. This raises the issue of how to integrate the dynamic nature of this equipment into the CMM required for design integration. This paper describes the design methodology that is being developed to address the specific nature of the IRMS in the building of the CMM and gives examples to demonstrate the benefits to be gained by adopting this approach.     

Counting and Integrating Readout for Direct Conversion X-ray Imaging: Concept, Realization and First Prototype Measurements

A novel signal processing concept for X-ray imaging with directly converting pixelated semiconductor sensors is presented. The novelty of this approach compared to existing concepts is the combination of charge integration and photon counting in every single pixel. Simultaneous operation of both signal processing chains extends the dynamic range beyond the limits of the individual schemes and allows determination of the mean photon energy. Medical applications such as X-ray computed tomography can benefit from this additional spectral information through improved contrast and the ability to determine the hardening of the tube spectrum due to attenuation by the scanned object. A prototype chip in 0.35-micrometer technology has been successfully tested. The pixel electronics are designed using a low-swing differential current mode logic. Key element is a configurable feedback circuit for the charge sensitive amplifier which provides continuous reset, leakage current compensation and replicates the input signal for the integrator. This paper will discuss measurement results of the prototype structures and give details on the circuit design     

An integrated translation of design data of a nuclear power plant from a specification-driven plant design system to neutral model data

How to efficiently integrate and manage lifecycle data of a nuclear power plant has gradually become an important object of study. Because plants usually have a very long period of operation and maintenance, the plant design data need to be presented in a computer-interpretable form and to be independent of any commercial systems. The conversion of plant design data from various design systems into neutral model data is therefore an important technology for the effective operation and maintenance of plants. In this study, a neutral model for the efficient integration of plant design data is chosen from among the currently available options and extended in order to cover the information model requirements of nuclear power plants in Korea. After the mapping of the neutral model and the data model of a specification-driven plant design system, a plant data translator is also implemented in accordance with the schema mapping results.     

Aperture Synthesis by Object Rotation in Coherent Imaging

Doppler processing is an established method for obtaining spatial resolution of objects which exhibit radial motion relative to an observing sensor. When applied to rotating objects, Doppler processing yields resolution in cross-range along an axis normal to both object rotation and line-of-sight axes. In this case, the cross-range resolution performance is dictated by the angular interval over which the data are observed and processed. This paper treats a tomographic extension of Doppler processing in the case of a rotating object (or a rotating planar array of point scatterers). It uses a stationary, continuous-wave (CW) irradiating source and sensor, co-located in the plane being imaged. The processing of data from a rotating object is shown to be equivalent to synthesizing an aperture which is a segment of a circle, however, processing over large angular rotations requires a focusing correction. Angular rotations up to and including 2? radians are considered. For this latter condition the system simulates an annular aperture which encloses the object. With this technique, high resolution may be obtained in all directions in the object plane without the use of a wideband signal, and equal point-objects separated by a quarter wavelength may be resolved. The imaging process provides high resolution for sparse arrays of objects of similar strength which are small in comparison to a wavelength. The imaging capability in the case of dense object arrays or large objects is limited and has a restricted dynamic range.     

Toward the ultimate goal of tritium self-sufficiency: Technical issues and requirements imposed on ARIES advanced power plants

Due to the lack of external tritium sources, all fusion power plants must demonstrate a closed tritium fuel cycle. The tritium breeding ratio (TBR) must exceed unity by a certain margin. The key question is: how large is this margin and how high should the calculated TBR be? The TBR requirement is design and breeder-dependent and evolves with time. At present, the ARIES requirement is 1.1 for the calculated overall TBR of LiPb systems. The Net TBR during plant operation could be around 1.01. The difference accounts for deficiencies in the design elements (nuclear data evaluation, neutronics code validation, and 3D modeling tools). Such a low Net TBR of 1.01 is potentially achievable in advanced designs employing advanced physics and technology. A dedicated R&D effort will reduce the difference between the calculated TBR and Net TBR. A generic breeding issue encountered in all fusion designs is whether any fusion design will over-breed or under-breed during plant operation. To achieve the required Net TBR with sufficient precision, an online control of tritium breeding is highly recommended for all fusion designs. This can easily be achieved for liquid breeders through online adjustment of Li enrichment.