基于先进先出的新型结构健康监测系统设计

Design of new structural health monitoring system based on first in first out

高速实时地采集传感器信号以及精确测量结构的状态信息对结构健康监测至关重要。但传统的基于串行处理的结构健康监测系统在进行数据分析的同时必须停止数据采集,造成数据采集不连续,实时采集速率不高。为此,采用光纤光栅传感器设计一个新型的实时结构健康监测系统,通过先进先出(FIFO)缓存区的设计将串行模式下间断性的数据采集转化为连续性的数据采集,有效提高了监测系统的实时数据采集速率。系统通过实验证明FIFO缓冲技术的引入有效提高了实时数据采集速率,最大可提高100%;同时也消除了串行模式下间断性数据采集对系统测量精度的影响。

High-speed and real-time data acquisition and accurate measurement are very important to structural health monitoring.Traditional serial processing based structural health monitoring system has to stop data acquisition while it is analyzing sensing data,so the data acquisition process is discontinuous,and real-time data acquisition rate is limited.This paper designed a new structural health monitoring system with Fiber Bragg Grating（FBG） sensors,and the real-time data acquisition rate was improved greatly by introducing FIFO into serial processing mode.The experimental results demonstrate that the introduction of FIFO technology is effective to increase real-time data acquisition rate,and the maximum improvement is 100%.The impact of data acquisition on measurement accuracy has also been minimized at the same time.