Alternate Data Acquisition and Real-time Monitoring System on HT-7 Tokamak

A new system called alternate data acquisition and real-time monitoring system has been developed for long-time discharge in tokamak operation. It can support continuous on-line data acquisition at a high sampling rate and a graphic display of the plasma parameters during the discharge. Thus operators can monitor and control the plasma state in real time. An application of this system has been demonstrated on the HT-7 tokamak.

A Review of Data Acquisition System based on LabVIEW

With the continuous development and expansion of automotive industry, car safety problems are widely concerned by most of us. In order to make it easier to adjust car′s real-time body posture, it is necessary to design a real-time data acquisition system, thus reducing the number of casualties in normal driving. A brief account of the development status of data acquisition system at home and abroad, and the concept, principle,function of virtual instrument platform are given. The advantages and disadvantages of the data acquisitionsystem, based on LabVIEW in different methods of data acquisition, are analyzed and compared, and put forward some improvements and optimization, so the real-time data acquisition system can meet the requirement of adjusting the state of the vehicle, improving real-time of data acquisition and processing. Finally, it indicates the development direction and prospect of data acquisition system based on LabVIEW.

Ultra-high Speed and Dual-Channel Data Acquisition Card with IGSPS Based on PXI Bus

This paper discusses the chief techniques and design principles of an ultra-high speed and dual-channel data acquisition card based on PXI bus, using FPGA (Field Programmable Gate Array) as logic controller cell. The instmment consists of pre-pro- cess circuit, A/D converter, SDRAM (Synchronous Dynamic random access memory), and control circuit integrated in FPGA. It can achieve allowing up to 1000MHz real-time sampling rate. The test result indicates that the system works normally and the system design is successful.

基于NI Real-Time Hypervisor的液压摇摆台实时测控系统设计

提出一种新的利用Real-Time Hypervisor在一台PXI控制器上实现双液压缸实时控制的方案,可完成摇摆台数据的实时采集和双液压缸的实时控制。建立液压摇摆台的数学模型,并用MATLAB软件进行仿真,得到实验条件下双液压缸的行程轨迹;依据Real-Time Hypervisor配置合适的PXI硬件系统,开发面向非实时系统(Windows XP)和实时系统(Lab-VIEW RT)的软件;在Real-Time Hypervisor的虚拟网络中建立共享变量实现实时软件和非实时软件之间的数据通信。

A Remote Real-Time Monitoring System for Power Quality

An introduction is made to the composition, design method and engineering application of a remote real time monitoring system of power quality in substations based on internet. With virtual instrument and network technique adopted, this system is characterized by good real time property, high reliability, plentiful functions, and so on. It also can be used to monitor the load of a substation, such as electric locomotives.

Design and Research of Distributed Real TimeSurveillance Control System

Distributed real time surveillance control system is used especially in distributed computer measure and control system, mostly inwidely dispersed measure points without human surveillance. This paper describes theory、construction、control strategy, stabilityanalysis of distributed real time supervisory control and data acquisition system, implements distributed measure signals collectionand design of supervisory control system. The realization of virtual instrument based on VC＋＋ can accomplish measurementsignals acquisition, storage, display and analysis, also the result of surveillance control system is provided, and shows thefunctional powerful agility of virtual instrument based on VC＋＋.

Development and Application of Real-time Bridge Scour Monitoring System

Because of the complex nature of the changes in the current and movement of the riverbeds by bridge scouring, it is impossible to understand or predict these changes. In order to have a reliable data, it is critical to have the current methods and equipment for measuring bridge scouring replaced with technology that could acquire real-time bridge scouring data. Despite the critical need for real-time data acquisition, the harsh environmental conditions have prevented the scientific community from acquiring real-time data. Harsh environmental conditions were addressed by the developmental of an automated, remote data collection system, allowing real-time data such as scour movement, scour depth, and scour trend to be viewed in a safe location. As a result, accurate sea-floor movements were seen for the first time, aiding the direction and future of bridge scour research, ultimately contributing greatly to the safety of bridges.

Application of Virtual Instrumentation in HL-2A DAPS

HL-2A DAPS is a large scale special data system for HL-2A tokamak . Technology of network, communication, data acquisition, data processing, real-time display, data management and systems management have been used in this system. With higher quality products and lower design costs, virtual instrumentation has been widely used in HL-2A DAPS. Vh-tual instrumentation combines mainstream commercial technologies, with flexible software and a wide variety of measurement and control hardware. It＇s easily to create user-defined systems that meet the exact application needs for the experiment.

基于DataSocket技术的光伏发电远程监测系统

为了实现光伏电站发电数据的远程实时传输,设计了一种基于DataSocket技术,使用DataSocket连接前面板对象的方式并结合虚拟仪器技术,远程实时传输光伏电站发电数据系统,实现光伏电站发电数据的远程实时传输。使用这种方法还能实现电站电能波形数据的传输,对于电站监测系统的推广和应用有实际意义。

The Organizing of Database from Surlari National Geomagnetic Observatory

Our paper describes the organizing of database,remarks about SNGO(Surlari National Geomagnetic Observatory)and network infrastructure.Based on the geomagnetic data acquired and stored on the database server,we perform the processing and analysis of geomagnetic parameters through different spectral,statistical and correlation methods.All these parameters are included in the geomagnetic database on server.The web interface for the database meets the different needs of handling the data collected,raw or processed.The server-side programming language used for design is php.This allow us to select different periods for which access to stored data,required for different search filters and different parameters or data from different time periods can be compared.For a more in-depth analysis of the stored data,through JavaScript programming language graphs for different parameters can be drawn.Access to the web interface can be done with or without authentication,depending on the need to ensure the security of certain data collected,stored and processed.The applications are scalable for different devices that will access it:mobile,tablets,laptops or desktops.

Design and Realization of Rotating Machinery Conditions Monitoring System Based on LabVIEW

Nonlinear dynamic analysis of rotating machinery system has always been the hot spot of the rotational dynamics re-search. This article sets up a rotating machinery condition monitoring system to realize the measurement of system dynamic charac-teristic parameters based on NI(National Instruments) virtual instruments technology. The measurement of vibration signal of rotating machinery system is achieved by using NI company general data acquisition module of NI Company. Meanwhile, by analyzing and processing the acquired data using LabVIEW 2012, the dynamic characteristics, such as .the speed of the rotating machinery system, the axis trajectory, spectrum parameters, are attained. The measurement results show that the rotating machinery condition monitor-ing system based on LabVIEW is easy to operate, easy to realize the function extension and maintenance, and that it can be used in the industrial engineering projects with rotation characteristics. LabVIEW as the development tools used by virtual instrument func-tion is very powerful data acquisition software products support is one of the features of it, so using LabVIEW programming and data acquisition is simple and convenient.

装配机器人的数字孪生虚实同步及抓取方法

针对工业机器人进行装配任务时对物料智能抓取精度差和数据处理难等问题,提出一种基于数字孪生的装配机器人虚实同步及抓取方法。以数字孪生为基础,设计了数字孪生装配机器人虚实同步及抓取架构。通过对多源异构数据的分类实现OPC UA服务器和客户端的信息模型搭建,并以OPC UA通信协议为桥梁进行装配机器人的数据通信,实现虚实同步。通过虚拟机器人对卷积神经网络进行进一步训练,提高对物料的抓取精度。在所开发的机器人数字孪生原型系统中验证所提方法的正确性和有效性,为实现装配机器人的数字孪生虚实同步和精确抓取提供新方案。

电子测量技术实验教学案例设计

电子测量技术是一门工程实践性较强的专业课程,课程实验内容的设计至关重要。文章给出了实验总体设计思路,并详细介绍了各个实验的设计目的和内容。这些实验涵盖了通用电子测量仪器的使用和虚拟仪器测量中数据采集、传递、处理、存储、显示全流程要素所需的知识点和技能点,可操作性强,富有启发性。经过多年的教学实践验证,这些实验激发了学生的学习兴趣,夯实了学生的理论基础,培养了学生的实践创新能力,同时也为电子测量技术及其他相关课程的实验教学提供借鉴。

基于虚拟仪器的湿度传感器自动采集系统设计

利用虚拟仪器技术,结合LabVIEW程序开发环境,设计HMP155型湿度传感器(以下简称湿度传感器)的数据采集系统。系统包括传感器硬件连接与软件设计两部分,主要实现数据采集并画出数据曲线、湿度阈值报警和采集数据导入SQL数据库,能够解决湿度传感器在计量检定及校准过程中被检数据读取问题。

基于数字孪生的加工生产线虚实交互技术研究

针对传统加工生产线运行过程中设备数据采集困难和可视化程度低的问题,研究了数字孪生(DT)技术在加工生产线虚实交互方面的应用问题。首先,以某电机外壳加工生产线为例,分析了生产线的加工流程,设计了虚实交互技术的总体框架,并提出了具体的方法;然后,对加工生产线进行了数字孪生体建模,对模型中的关键要素,几何、物理、行为属性及通讯接口的构建进行了详细的阐述;最后,采用过程控制的对象链接和嵌入(OPC)技术进行了加工生产线中多源异构数据的采集与处理,完成了实时数据间的映射。研究结果表明:采用虚实交互技术可以完成物理生产线与数字孪生体间的实时映射;电机外壳加工生产线中机械臂虚实交互的可靠性为99.95%,可满足精确性要求;采用服务模块能够更加直观、有效地反映生产线的实际加工状态,可满足加工过程信息动态可视化要求,证明了该方案具有可行性和有效性。

基于STM32与LabVIEW的CAN总线创新实训平台设计

基于STM32处理器设计了用于课程实训的虚拟仪器LabVIEW数据采集板硬件电路,同时在嵌入式Keil编译器环境下实现了各个模块的接口功能。上位PC机通过LabVIEW软件使用事先定义的CAN应用层协议对采集板模拟I/O、数字I/O以及RFID、MPU6000传感器的信息进行采集处理。该实训平台目前已经在某公司六关节协作型机器人末端接口系统测试应用,结果表明采集板实训平台稳定性、精度都能满足接口设计要求。

面向托卡马克破裂预测的实时数据采集系统设计

[目的]等离子破裂是托卡马克核聚变装置运行中的重大威胁。破裂缓解系统可以降低等离子体破裂对装置的危害,其动作时机高度依赖于实时运行的等离子体破裂预测系统对等离子体破裂时刻的预测。基于深度学习的神经网络已被用于训练等离子体破裂预测模型,其实时运行需要来自多种诊断的大量实时数据。[方法]文中提出一种实时数据采集系统的设计方案。该系统基于模块化结构进行设计,分为多通道采集模块、ADC转换控制和数据读取模块、数据分组与封装模块和数据传输网络模块。数据传输网络模块基于运行在FPGA上的10 G速率的硬件UDP网络协议栈进行构建。该硬件UDP协议栈具有确定性的数据传输过程,使得系统具有很低的传输时延。[结果]该实时数据采集系统的采样率可以达到每通道2 MSa/s,数据吞吐速率超过9.3 Gb/s,数据传输延迟小于10μs。[结论]该实时数据采集系统可以为破裂预测程序提供快速传输的实时诊断数据流。高采样率使得系统可以对辐射、电子温度等1维诊断进行实时传输,提高数据时间分辨率。高数据吞吐率可以提高诊断数据的传输数据量,低数据传输时延可以减少破裂预测模型获取诊断数据的时间。

基于FPGA的大动态范围数据采集系统设计

针对传统数据采集系统受动态范围限制,进行测量时对大信号易过载、小信号易丢失等问题,设计了一种基于FPGA的大动态范围多通道数据采集系统,讨论了噪声相关性与放大器增益对动态范围的影响。该系统采用一种分立式架构的双ADC同步采集单元,结合FPGA高速并行处理的特点进行数据融合,对前端可变增益放大电路实时控制,实现多通道数据采集系统对微小信号采集时的高分辨率以及对大信号采集时的高容差。对采用动态范围最大为108 dB的AD7768芯片研制的实验样机进行测试,结果表明其在64 kHz的采样频率下可达到160 dB以上的动态范围,系统采样精度达到0.1%,线性度优于0.005%,通道间相位精度达到±0.05°。

智慧矿山数据标准化建设探索与实践

在深入分析井工煤矿数据国家编码标准的基础上,开发了双通道实时数据采集平台,以实现煤矿数据的实时标准化处理,最终研制了一套智能矿山数据标准化应用系统,该系统集高效数据管理、精确异常监测和前瞻性趋势预测于一体。杨柳煤矿的成功应用证明了该系统能够优化数据处理流程,提高异常分析的准确率和效率,并具有较强的趋势预测能力。该研究不仅为智能矿山技术的进步提供了技术支持,也展现了数据标准化在矿山智能化转型中的重要性。