基于C#与C++混编的轻元素X荧光测量软件

为了节约软件的开发周期,提高软件的开发效率,本文提出了一种基于C#与C++混编的轻元素X荧光测量软件的开发方法。该软件利用一款轻型的SQLite数据库存储配置参数、谱线数据等信息,并用第三方ZedGraph图形控件显示谱线,方便了数据管理,提升了界面的友好展示性。软件底层采用基于C++封装的SQLite和串口动态库,上层用C#做界面,提高了系统的稳定性和开发效率等。该软件完成了参数配置、自动换样、定时测量、谱线处理、数据保存等功能。该软件功能设计完善,界面友好,操作方便,稳定性较好,已成功的用于野外轻元素X荧光测量分析,经实测分析,该软件可满足野外现场可靠使用要求。     

基于Windows操作系统的X荧光光谱分析软件

基于国际通用的X荧光解谱软件AXIL的原理,自主开发出了在Windows平台上工作的新的X荧光光谱分析软件。该软件在我们自行研制的全反射X荧光分析仪上已工作多年。实践证明,该软件不仅界面友好、操作灵活,而且功能强大、准确性高,可完全代替DOS操作系统下工作的AXIL,具有很高的应用价值。     

能量色散X荧光分析系统软件设计

本文介绍的是新研制的能量色散X荧光分析软件。本软件采用树状结构,具有操作方便、运行速度快、功能丰富、容错能力强等特点。本软件实现了X荧光分析的数据采集、谱的解析和基体校正等功能,其效果达到了国际上同类产品的水平。     

X射线荧光分析原级能谱分布的MCNP模拟

X射线荧光分析中,入射激发能谱是影响元素特征荧光强度大小的直接因素。本文使用MCNP程序模拟不同条件下电子打靶后的X射线能谱分布,计算结果能够反映不同条件下特征谱线和连续谱线的特点。模拟能谱数据可用于X射线荧光分析的数据处理。     

能量色散X射线荧光分析现场测定地质样品中W钨含量

采用IED - 2000能量色散X射线荧光仪测量化探样品,并对获得的仪器谱进行散射本底扣除和直接解调谱线重建,获得W的Lα特征X射线全能峰净峰面积,从而实现W含量的测量.对同一批化探样品进行室内波长色散X射线荧光分析和野外X射线荧光分析,其分析结果对比表明对能量色散X射线荧光仪进行谱线处理后,可以在野外现场对W元素实现...     

基于Labwindows／CVI的虚拟核仪器软件

在LabiLndows/,CVI虚拟仪器软件平台上,开发了基于PC及WINDOWS XP的EDXRF分析软件,实现了在线数据处理、谱光滑、自动/手动寻峰、实时自动稳谱、半自动刻度与标定、核素自动识别及射线源自动调控等功能.软件采用多变量、多参数构建X射线荧光分析模式,能够适应各种复杂样品的自动定性分析和定量分析,结果采用表格化、图形化输出.在IED2000D型高精度XPF分析仪运行结果表明,可以满足教学、科研和生产的需要,具有推广价值.     

EDXRF特征谱平滑去噪方法比较

采用基于小波软阈值的最小二乘法拟合曲线的方法,对能量色散X荧光分析仪FeO谱线进行平滑处理,利用Matlab软件仿真分析。分别与未处理的原始能谱以及使用五点二阶法、小波软阈值法、傅里叶变换法、最小二乘法处理后的能谱定量分析比较。结果显示,基于小波软阈值的最小二乘法拟合的能谱曲线,能够有效地保留峰信息,峰总比达到0.103 6,本底为42,峰面积也较其他几种平滑方法更大,峰信息丢失最少,谱线的平滑去噪效果明显优于其他几种方法,有利于提高对能谱数据处理的精确度。     

小波多分辨率分析在X荧光谱线本底扣除中的应用研究

X射线荧光分析会使特征X射线的全能峰叠加在一定的本底之上.本底扣除的效果影响X荧光测量的精度.X射线荧光光谱是由各种频率的全能峰和本底构成,利用小波多分辨率分析,实现峰线和本底的层层剥离,达到扣除本底的效果.     

基于Bluesky的荧光面扫描技术

上海光源硬X射线微聚焦光束线站的控制及数据采集系统均是在EPICS(Experiment Physics and Industrial Control System)环境下开发的,但基于EPICS软件的荧光扫描系统无法满足荧光面扫描实验的一些特定要求,包括扫描数据实时显示、变步长扫描、多个任意位置样品连续扫描等。对此,采用了Bluesky与EPICS软件相结合的方法,基于Python语法结构设计了控制和数据采集系统,集成了运动控制、光强探测和荧光信号采集功能,实现了数据表格的实时显示、荧光图谱的绘制、自适应步长扫描和峰值数据自动计算、多个任意位置样品连续扫描和二维方形螺旋扫描等荧光面扫描相关技术。该系统使用户简单操作即可完成复杂的荧光面扫描,提高了实验灵活性和实验效率。     

基于EPICS的硬X微聚焦实验站数据采集系统

上海光源(SSRF)硬X射线微聚焦实验站在EPICS(Experimental Physics and Industrial Control System)软件环境下建立的控制和数据采集系统已成功用于微束X射线荧光分析、微束透射X射线吸收精细结构(XAFS)和微束荧光XAFS等实验.使用和测试结果表明:该系统用户界面简捷、控制及数据采集的功能完整、可靠性高、能极大提高实验效率.     

Integrated software safety analysis method for digital I&C systems

The digitalized Instrumentation and Control (I&C) system of Nuclear power plants can provide more powerful overall operation capability, and user friendly man-machine interface. The operator can obtain more information through digital I&C system. However, while I&C system being digitalized, three issues are encountered: (1) software common-cause failure, (2) the interaction failure between operator and digital instrumentation and control system interface, and (3) the non-detectability of software failure. These failures might defeat defense echelons, and make the Diversity and Defense-in-Depth (D3) analysis be more difficult. This work developed an integrated methodology to evaluate nuclear power plant safety effect by interactions between operator and digital I&C system, and then propose improvement recommendations. This integrated methodology includes component-level software fault tree, system-level sequence-tree method and nuclear power plant computer simulation analysis. Software fault tree can clarify the software failure structure in digital I&C systems. Sequence-tree method can identify the interaction process and relationship among operator and I&C systems in each D3 echelon in a design basis event. Nuclear power plant computer simulation analysis method can further analyze the available backup facilities and allowable manual action duration for the operator when the digital I&C fail to function. Applying this methodology to evaluate the performance of digital nuclear power plant D3 design, could promote the nuclear power plant operation safety. The operator can then trust the nuclear power plant than before, when operating the highly automatic digital I&C facilities.     

Operating procedure automation to enhance safety of nuclear power plants

Use of logic statements and computer assist are explored as means for automation and improvement on design of operating procedures including those employed in abnormal and emergency situations. Operating procedures for downpower and loss of forced circulation are used for demonstration. Human-factors analysis is performed on generic emergency operating procedures for three strategies of control; manual, semi-automatic and automatic, using standard emergency operating procedures. Such preliminary analysis shows that automation of procedures is feasible provided that fault-tolerant software and hardware become available for design of the controllers. Recommendations are provided for tests to substantiate the promise of enhancement of plant safety. Adequate design of operating procedures through automation may alleviate several major operational problems of nuclear power plants. Also, automation of procedures is necessary for partial or overall automatic control of plants. Fully automatic operations are needed for space applications while supervised automation of land-based and offshore plants may become the thrust of new generation of nuclear power plants.     

UNIX - A Solution to the Conpatibility Problem

The UNIX operating system (TM Bell Laboratories) has achieved a high degree of popularity in recent years. It is rapidly becoming a defacto standard as the operating system for 16 and 32 bit microcomputers. The adoption of this operating system by the physics community offers several substantial advantages; a portable software environment (editors, file system, etc.), freedom to choose among a variety of higher-level languages for software applications, and computer hardware vendor independence.     

微机化便携式γ全谱仪应用软件的几个关键问题讨论

采用笔记本微机作为控制主机的ＣＤ－１０型野外便携式γ全谱仪，克服了单纯以单片机为控制核心的野外γ射线能谱仪之不跳。其基于Ｗｉｎｄｏｗｓ９８系统的应用软件，具有强大的文件管理、图形显示等功能，实现了室内数据处理的野外现场化。并就γ全谱应用软件中的几个关键问题进行了讨论。     

Software integration for monitoring systems with high flexibility

A new scheme of software integration methodology is applied to the implementation of a neural-network-based real-time monitoring aid system. In this scheme, the data communication between modules is established by means of connecting a standard I/O stream of a module to that of another. The methodology enables easy coupling of software modules with the least modifications of existing source code, and it can make distributed software systems highly flexible, portable and testable.     

CAMAC插件自动测试系统的软件设计

介绍了CAMAC插件自动测试系统软件的设计，该系统能对5种CAMAC插件功能进行自动测试，操作方便可靠，MS-Windows人机图形界面显著，而且还能对5种之外的CAMAC插件进行手动功能测试。     

便携式双通道多道核谱仪中数据采集系统的设计

介绍应用FPGA为核心芯片配合峰保电路、高速A／D转换电路以及USB接口电路实现了便携式双通道多道核谱仪中数据采集系统；给出了软硬件的实现方案和实验结果；该系统具有采集精度高、传输快等特点，同时为进一步实现多通道信号采集提供了很好的参考价值。     

Development and diversity and defense-in-depth application of ABWR feedwater pump and controller model

This work developed an advanced boiling water reactor (ABWR) feedwater pump and controller model, which was incorporated into Personal Computer Transient Analyzer (PCTran)-ABWR, a nuclear power plant simulation code. The feedwater pump model includes three turbine-driven feedwater pumps and one motor-driven feedwater pump. The feedwater controller includes a one-element/three-element water level controller and a specific feedwater speed controller for each feedwater pump. The performance tests, including step change of dome pressure, feedwater pumps transfer, inadvertent closure of all turbine control valves, and one feedwater pump trip at 100% power, demonstrate the feasibility of dynamic response of stand-alone model and incorporated model. Furthermore, a diversity and defense-in-depth analysis is performed to demonstrate the feasibility for motor-driven feedwater pump as an emergency core cooling system (ECCS) automatic diverse back-up. In Lungmen nuclear power plant (NPP), a diverse manual initiation means for the high pressure core flooder (HPCF) loop C is designed as the back-up of digitalized engineered safety features actuation system (ESFAS). If the motor-driven feedwater pump (MDFWP) can be an automatic digital diverse back-up for ESFAS, Lungmen NPP would be more robust to defend against software common-cause failure (CCF).