储氢合金性能测试仪测控系统设计

阐述了利用PCI6220数据采集卡和SCC型信号调理模块以及LabVIEW软件搭建储氢合金性能测试仪测控系统的设计方法。详述了测试仪结构和测试原理,测控系统的软硬件框架和软件流程。     

基于DMA方式的矿用监控系统高速数据采集节点设计

随着工矿企业自动化程度的提高,设计了一种基于DMA方式的高速数据采集节点,采用新型系统级单片机,对节点中的高速缓存、CAN总线通讯接口等内容进行了讨论,阐述了同步采集的方法,结合节点的软硬件设计,给出了一些器件初始化程序的C51代码和部分模块的接口电路图。     

基于USB接口的数据采集卡在UHT纸盒奶检测仪中的应压

UHT纸盒奶检测仪是基于流体力学的运动原理，利用电子、物理方法设计研制的，适用于不同砖型纸盒包装的超高温灭菌牛奶产品的虚拟检测仪器。本文介绍了在UHT纸盒奶检测仪中，LabVIEW环境下，如何使用USB接口的数据采集卡，进行数据采集以及控制步进电机。通过试验证明该系统达到了设计要求。     

Design of data transmission for a portable DAQ system

Field Programmable Gate Array （FPGA）, combined with ARM （Advanced RISC Machines） is increasingly employed in the portable data acquisition （DAQ） system for nuclear experiments to reduce the system volume and achieve powerful and multifunctional capacity. High-speed data transmission between FPGA and ARM is one of the most challenging issues for system implementation. In this paper, we propose a method to realize the high-speed data transmission by using the FPGA to acquire massive data from FEE （Front-end electronics） and send it to the ARM whilst the ARM to transmit the data to the remote computer through the TCP/IP protocol for later process. This paper mainly introduces the interface design of the high-speed transmission method between the FPGA and the ARM, the transmission logic of the FPGA, and the program design of the ARM. The theoretical research shows that the maximal transmission speed between the FPGA and the ARM through this way can reach 50 MB/s. In a realistic nuclear physics experiment, this portable DAQ system achieved 2.2 MB/s data acquisition speed.     

基于LabVIEW及DAQ的光电检测系统

基于NI USB-6009数据采集卡、上位机及Lab VIEW为基础构建了光电检测系统。系统适用于光电传感器性能检测以及简单的实时信号监控。系统中数据采集由数据采集卡实现,其他功能,包括数据存储、触发、控制、显示、用户界面等,均在上位机中用软件(Lab VIEW 2013)实现。由于采用USB数据线,采集卡与上位机之间连接方便,并且提高了可扩展性、可维护性,降低了成本。实验结果表明,对于不同的光电传感器,系统都能够进行准确的检测。     

A LabVIEW based automatic test system for sieving chips

The present trend for Complementary Metal Oxide Semiconductor (CMOS) chip designs is smaller in size and power consumption with multifunction. This results the difficulty for the testing engineer, especially for small amount production without an automatic probe station, to complete such task. In order to reduce the workload of the engineer, improve the testing efficiency and accuracy, a LabVIEW based automatic test system for such CMOS chip has been designed in this paper. The details of the overall system which includes the setup of the testing by using a PXI (PCI extensions for instrumentation) system with Data Acquisition (DAQ) and Source Measure Units (SMUs) module, and the LabVIEW based automatic testing program has been introduced in this paper. The testing results have shown that this system is able to improve the testing efficiency with great accuracy, at the same time to evaluate the testing results in real-time. Due to the software is built on different modules, and it is therefore easy to be extended for different applications.     

基于PC-SCM的无线数据采集系统

介绍一种基于PC-SCM的无线实时收发系统，叙述了系统的工作原理与软件的实现方法。     

高密度塑料闪烁体探测器的数据获取系统设计

由中国科学院近代物理研究所承担的塑料闪烁体探测器研究项目,其目标是开展空间粒子探测、重构入射电子轨迹、区分电子和光子、鉴别重离子。为配合该探测器测试工作,设计了一套完备的数据获取电路(DAQ)与上位机软件。DAQ接收4块前端电子学(FEE)板的数据,可完成360路电子学通道的数据读出;接收上位机的控制命令并分发给各FEE;接收探测器的击中信息并产生触发信号;接收FEE的遥测数据并传给上位机。该DAQ与上位机通过USB总线和RS232总线实现实时通信。上位机软件基于LabWindows/CVI软件平台开发,实现对FEE电子学系统的控制、数据读取与保存,以及FEE系统运行状态参数信息的实时显示。该数据获取系统电路结构紧凑、功能完善,上位机软件具有良好的人机交互界面。经现场实际运行,DAQ与上位机软件满足设计要求,目前已成功应用于塑料闪烁体探测器读出电子学测试系统。     

Clinet/Server模式在家庭远程监测系统中的应用

以Internet远程通讯和计算机为代表的信息技术的迅速发展和应用，使得远程教育，远程贸易和远程监控成为可能，本文利用Winsock技术，实现了基于客户/服务器模式的远程监测机和本地机之间的通讯，最终达到家庭远程监测的目的。     

Development and characterization of a modular acquisition system for a 4D PET block detector

Next generation PET scanners should fulfill very high requirements in terms of spatial, energy and timing resolution. Modern scanner performances are inherently limited by the use of standard photomultiplier tubes. The use of Silicon Photomultiplier (SiPM) matrices is proposed for the construction of a 4D PET module based on LSO continuous crystals, which is envisaged to replace the standard PET block detector. The expected spatial resolution of the module for the photon hit position is below 1 mm, and it will perform at the same time, the Depth Of Interaction (DOI) calculation and the Time Of Flight (TOF) measurement. The use of large area multi-pixel Silicon Photomultiplier (SiPM) detectors requires the development of a multichannel Digital Acquisition system (DAQ) as well as of a dedicated front-end in order not to degrade the intrinsic detector performances. We have developed a flexible and modular DAQ system for the read-out of two modules in time coincidence for Positron Emission Tomography (PET) applications. The DAQ system is based on a previously developed custom front-end ASIC chip (BASIC) which allows to read-out SiPM matrices preserving their spectroscopy and timing capabilities. Here we describe the acquisition system architecture and its characterization measurements.