关键词: 结构健康监测系统, 实时数据采集, 串行处理, 先进先出, 测量精度

Abstract: 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.

Key words: structure health monitoring system, real-time data acquisition, serial operation, First In First Out (FIFO), measurement accuracy