一种无线遥测自动气象站远程检测控制模块的研制

为了节省无线遥测自动气象站死机故障排除时需要耗费的人力物力,研制了一种远程检测控制模块,包括硬件电路的设计、固件程序设计、调试制作等。通过对无线遥测自动气象站进行远程重启或自动重启,实现死机故障的排除。同时可以远程读取自动气象站运行时的电压情况,对电池性能进行分析。该模块接入无线遥测自动气象站后,在自动气象站出现死机故障时无需工作人员前往现场处理。     

数据采集器自动检测与断电重启的实现

针对太原基准地震台加速度观测中出现的数据采集器死机现象,使用Visual Studio 2015开发环境,对网络远程控制设备进行二次开发,编写自动处理软件,实现了对加速度数据采集器执行自动检测、自动断电复位和开启数据流的操作,为其他观测台站解决类似的问题提供技术参考。     

On‐line hybrid test combining with general‐purpose finite element software

A new on‐line hybrid test system incorporated with the substructuring technique is developed. In this system, a general‐purpose finite element software is employed to obtain the restoring forces of the numerical substructure accurately. The restart option is repeatedly used to accommodate the software with alternating loading and analysis characteristic of the on‐line test but without touching the source code. An eight‐storey base‐isolated structure is tested to evaluate the feasibility and effectiveness of the proposed test system. The overall structure is divided into two substructures, i.e. a superstructure to be analysed by the software and a base‐isolation layer to be tested physically. Collisions between the base‐isolation layer and the surrounding walls are considered in the test. The responses of the overall structure are reasonable, and smooth operation is achieved without any malfunction. Copyright © 2006 John Wiley & Sons, Ltd.     

On‐line hybrid test method for evaluating the performance of structural details to failure

A test environment to evaluate the seismic performance of gusset plate connections intended for steel braced frames is proposed. The developed test method combines the substructuring techniques with finite element analysis methods in an on‐line hybrid scheme. Numerical substructure analysis is conducted on bracing members, while bracing connections are treated as experimental substructures. A force‐displacement combined control imposed with the aid of 2 jacks ensures physical continuity between the analysis and test. The rotational behavior of gusset plate connections subjected to large inelasticity and varying axial loading until fracture is investigated. Two gusset plate details were designed and tested to verify the efficiency of the proposed method. The test method is rational, and smooth operation is achieved. The test results revealed the advantage of the developed on‐line hybrid test method in exploring the ultimate capacity of bracing connections.