LabWindows/CVI在涂镀层测厚系统中的应用

针对目前涂镀层测厚系统存在的问题,由于虚拟仪器具有传统智能仪器无法比拟的优势,论文提出了基于虚拟仪器涂镀层测厚数据采集系统的设计思想.简要对涂镀层测厚系统进行了硬件设计,主要讨论以微控制器(ARM)为核心的涂镀层测厚系统的设计.特别讨论虚拟仪器的数据采集系统的设计.通过虚拟仪器能够实现对工作现场生产过程的实时监控、数据传输、实时处理、厚度曲线显示.该系统较好完成了涂镀层厚度中重要参数的实时全程控制,并且具有显示直观、反应迅速,性价比高等特点,因此具有一定的使用价值.     

基于ZigBee无线通信多点温湿度测量系统的设计

根据仓储管理和地学核仪器中温湿度实时监控的需要,采用ZigBee无线通信技术,以C8051 F320单片机为核心,结合数字温湿度测量传感器SHT10,以OLED为显示界面设计了一款多测点温湿度实时测量系统,介绍了系统的构成和工作原理、硬件选择和软件设计.该系统具有功耗低、体积小、操作方便等特点.     

直流蒸汽发生器给水控制半实物仿真系统

采用直流蒸汽发生器的核动力装置是一个多变量耦合的复杂被控对象,为了对其给水控制系统进行研究,设计了一个直流蒸汽发生器给水控制半实物闭环仿真系统.该系统由实时仿真系统、给水控制系统物理设备和仿真过程管理系统组成.给水控制系统物理设备采集实时仿真系统提供的参数信号,并输出控制信号至电动执行机构.半实物闭环控制仿真试验表明,该仿真系统具有较好负荷跟踪能力,可为实际直流蒸汽发生器控制系统的设计及运行提供技术指导.     

核事故应急移动实时数据监测系统

针对核事故应急监测的特殊应用,设计了移动实时数据监测系统,完成实时数据采集和传输.其具体功能包括:多串口数据实时采集、应急监测车的GPS定位与路线记录、基于CDMA 1X网络的无线数据通信、数据库等.通过现场多次测试证明,系统满足核应急监测实时数据采集和传输的要求.     

基于B/S方式的远程地震波形浏览系统设计与实现

基于网络B/S模式地震波形数据实时浏览,在现代地震研究与数据服务方面具有重要作用并且技术亟待提高.全面阐述了基于B/S方式实现地震波形数据远程实时浏览的基本思路,软件实现方法、系统体系结构框架以及编程实现.重点研究了远程数据调用、大数据的显示以及JAVA程序开发等关键技术问题.     

基于ARM的多道核信号采集系统

由嵌入式微处理器LPC2148和μC/OS-Ⅱ实时多任务操作系统组成的多道核信号采集系统,具有电路简单、可靠性好、功耗低、分析精度高和现场数据处理能力强的特点.该系统可适配α、γ、X等探测器,组成多用途便携式核辐射测量仪.     

基于GPS/CDMA的核事故应急监测系统的设计

设计实现了核事故应急辐射环境实时移动监测系统,包括三个子系统:车载辐射环境现场数据监测系统、无线数据传输系统和监测中心数据处理系统.通过现场多次测试证明,系统满足核应急监测实时数据采集和传输的要求.     

基于LabVIEW的同步光数据采集及处理系统

加速器束流测量对优化系统参数、确保加速器运行至关重要,上海光源工程采用同步光来测量束流的截面尺寸,具有无阻拦、实时等优点.本文介绍了同步光测量系统的整体架构,特别是其中的数据采集处理系统.将干涉法测量同步光束流截面尺寸应用于束流测量工作,可使测量精度达到岬量级.     

基于Wi-Fi的远距离无线数据采集系统

传统的军用摩托车测试系统大多是存储测试系统,无法将测试数据实时地传递到远端的控制台,这给数据的读取和分析带来不便.论文设计并实现了一种基于Wi - Fi远距离无线数据采集系统.相比目前其它无线传输系统该无线采集系统具有传输速度快、距离远、抗干扰能力强、能与以太网整合等优点.在满足传输速率的前提下,通信距离可达10 km.     

基于LabVIEW伽玛能谱的视频与远程分析设计

针对放射性测量分析中对操作人员的辐射保护问题,以及便予专家远程实时分析,提出了现场视频与Internet访问控制相结合的解决方案;分别运用DirectShow技术及LabVIEW的IDT(Internet Develop Toolkit)模块,在Windows系统下通过IIS(Internet Information Sever)将视频和能谱分析页面融合并发布;实现了伽玛能谱的实时分析和Internet的远程访问与操作.该系统具有界面友好,简便易行的特点,对于相关的放射性测量具有一定的借鉴意义.     

An integral model for a severe accident at a nuclear plant with a containment

Translated from Atomnaya Énergiya, Vol. 71, No. 1, pp. 8–13, July, 1991     

Effectiveness of a system of rod absorbers in a reactor fitted with a reflector

The conditions of criticality and the distributions of the neutron flux for a homogeneous thermal-neutron reactor with a system of absorbing rods are obtained in the two-group approximation. The rods extend through the entire depth of the reactor and are situated around the circumference of the active zone or radial reflector at a uniform distance from one another. The results of the calculation are presented.The author expresses his gratitude to Ya. V. Shevelev for discussing basic questions connected with this work, and also to N. N. Ponomarev-Stepnii and E. S. Glushkov for aid and critical remarks. Numerous and difficult calculations were performed by R. V. Kulev, to whom the author is very grateful.     

Thermal stresses in a cylindrical shell containing a circular hole or a rigid inclusion

The thermal stress problem of a circular discontinuity in a cylindrical shell has been solved by continuum approach. Two types of discontinuities are considered: (i) a circular hole and (ii) a circular regid inclusion. The effect of a uniform temperature or a linearly varying temperature across the thickness has been studied. The problem is converted into an equivalent boundary value problem and boundary conditions are specified around the discontinuity. The results are presented in a graphical form for ready use.     

Hard x-radiation accompanying a discharge in a gas

In this paper it is shown that a powerful gas discharge at low pressure is accompanied by the emission of hard X-ray quanta. The radiation is observed in the discharge in various gases. The main properties of the radiation are studied, and consideration is given to a possible mechanism of origin of the effect observed.The authors regard it as their pleasant duty to express their gratitude to L. A. Artsimovich for valuable discussions, and also to S. A. Chuvatin for aid in carrying out the experiments.     

Signal Coupling from a Semiconductor Detector to a Cold Resistance Preamplifier Through a Cable or a Delay - Line Transformer

The behavior of a charge-sensitive preamplifier exhibiting a stabilized cold resistance at the input port is analyzed in view of its application as a low-noise termination for a cable or a delay-line transformer. Its use in conjuction with a remote semiconductor detector of large capacitance is discussed. Results obtained with different values of cable length, detector capacitance and shaping time constants are given. It is concluded that such a preamplifier can be successfully employed in several circumstances associated with silicon live targets in high-energy experiments.