Data Acquisition System and Instrumentation for the NEES@UCSD Large High Performance Outdoor Shake Table (LHPOST)

该奖项为加州-圣地亚哥大学（UCSD）提供资金，用于购买先进的仪器，并为乔治E。小布朗地震工程模拟网络（NEES）-大型高性能室外振动台（LHPOST），将由NEES联盟公司运营，2005 - 2014财政年度作为国家共享使用设施。 这笔资金用于采购一个分布式数据采集系统和一系列传感器（位移传感器、加速度计和光学位移测量系统），这些传感器可以部署在户外并用于大规模实验。这种设备是NEES大型高性能室外振动台（LHPOST）运行所必需的。仪器包括：一个分布式数据采集系统，最初由一台中央控制计算机、一个中央分配终端和8个64通道通用分布式数据采集系统组成。在这笔资金的资助下，总共将获得256个通道; Sensotec传感器是一种50 mm行程传感器，将提供无限分辨率和0.25%的最大非线性，将用于获得位移，旋转，曲率或剪切变形等量。根据本提案，将资助24个传感器; Ametek Rayelco PSS-50 A-HT型传感器是一个总行程为50英寸的潜水线电位计。它将用于测量更大的位移。将用本建议书中建议的资金购买36个这种类型的传感器; Crossbow LP系列加速度计是各种范围的通用线性加速度传感器。 将使用本提案中建议的资金购买16个4 g三轴Crossbow LP系列加速度计; ShapeMonitor是一个交钥匙系统，可以实时测量物体。该系统由高速计算机、图像采集卡、双数码相机和目标投影仪组成。ShapeController允许测量对象，无论它们是静态的还是动态的。该系统还可用于激光系统失效的恶劣环境和平台稳定性差的情况。ShapeMonitor程序是独立于硬件的。该相机系统将用于监控子组件和系统级样本的响应和图像后处理。这种增强的仪器将使研究人员能够获得从NEES用户使用所要求的设备和传感器在LHPOST上进行的地标测试中获得的高质量数据。该奖项由NSF NEES主要研究设备和设施建设（MREFC）项目资助，是国家地震灾害减少计划（NEHRP）的一部分。

This award provides funding for University of California - San Diego (UCSD) to purchase advanced instrumentation and do associated work for the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) - Large High Performance Outdoor Shake Table (LHPOST), that will be operated by NEES Consortium, Inc., as a national shared use facility during FY 2005 - FY 2014. This funding is provided for the procurement of a distributed data acquisition system and a range of sensors (displacement transducers, accelerometers and an optical displacement measurement system) that can be deployed outdoors and used in large-scale experimentation. Such equipment is necessary for the operation of NEES Large High Performance Outdoor Shake Table (LHPOST).The instrumentation includes: A distributed data acquisition system which will initially consist of a central control computer, a central distribution terminal, and eight 64-channel general purpose distributed data acquisition system. Under this funding a total of 256 channels will be acquired; Sensotec transducer is a 50 mm stroke transducer that will provide infinite resolution and a maximum nonlinearity of 0.25% of full scale which will be used to obtain quantities such as displacements, rotations, curvatures or shear deformations. Twenty-four transducers will be funded under this proposal; The Ametek Rayelco Model PSS-50A-HT transducer is a submersible wire potentiometer with a total stroke of 50 inches. It will be used for measuring larger displacements. Thirty-six transducers of this type will be purchased with funds recommended in this proposal; The Crossbow LP series accelerometers are general- purpose linear acceleration sensors available in various ranges. Sixteen 4 g tri-axial Crossbow LP series accelerometers will be purchased with funds recommended in this proposal; ShapeMonitor is a turnkey system that allows for measuring objects in real-time. The system comprises a high-speed computer, frame grabber, dual digital cameras for data acquisition and a target projector. ShapeMonitorallows for measurement of objects whether they are static or dynamic. The system can also be used in harsh environments and poor platform stability where laser systems fail. The ShapeMonitor program is hardware independent. This camera system will be used for monitoring the response and image-post processing of the sub-assemblage and systems level specimens. This augmented instrumentation will enable researchers to obtain quality data gained from the landmark tests conducted by NEES users on the LHPOST using the requested equipment and sensors. This award is funded by the NSF NEES Major Research Equipment and Facilities Construction (MREFC) project and is a component of the National Earthquake Hazards Reduction Program (NEHRP).