新型数据采集分析系统及其在工程振动中的应用

本文介绍了针对地震工程和土木工程实验的需求而开发的数据采集分析系统（DAQ－PI－32，VI－BAN2.40)的功能、原理及使用方法。该系统具有通道多（16－32）、精度高（16Bit分辨率）、动态范围大等特点。配套软件VIBAN2.40的功能基本涵盖了振动实验、振动监测、结构及构件力学性能实验等对数据处理的需求，主要功能包括FFT分析、加窗、滤波、功率谱、反应谱、传递函数、相关分析、倒谱以及场地谱比（H／V）等。该系统的主要特点是在窗口操作界面下，实现信号的快速浏览和简易快速谱分析，通过VIBAN2.40可实现数据分析与绘图同步完成，大大提高了工作效率。该系统为地震和工程振动工作者提供了强有力的工具。

Study on a new type of data logging system for vibration measurement and software pack for data processing and analysis

The authors introduce in detail here the function and operation method of a new data logging system (DAQ PI 32 *) used for vibration measurement and the software pack (VIBAN 2.40) for data processing and analysis. VIBAN 2.40 is specially designed for vibration monitoring and vibration measurement. With 16 or 32 single ended channels and 16 Bit resolution, DAQ PI 32 can achieve dynamic range of 83 dB. Data will be renewed automatically when used for continuous monitoring. Most function can be performed just by a mouse when used for data logging in laboratory or in situ. The software pack is compiled by Fortran language and Graphic Language Editor with functions as follows: FFT, relevant analysis, filtering, power spectrum, response spectrum, modal analysis as well as H/V (Microtremor spectral ratio of soil site). One of the advantages is that data analyzing and plotting can be done by one operation. Because of its convenient operation and powerful function of data analysis, DAQ PI 32 and VIBAN 2.40 can help a lot for professionals of earthquake engineering and vibration engineering.