基于光纤传输的结构损伤声发射监测系统研究  

Research on Monitoring System of Acoustic Emission of Structural Damage Based on Optical Fiber Transmission

作　　者：万帅[1,2] 李青[1] 丁克勤[2] 赵娜[2] 李娜[2] 

机构地区：[1]中国计量大学机电工程学院,杭州310018 [2]中国特种设备检测研究院,北京100013

出　　处：《计算机测量与控制》2016年第12期20-23,共4页Computer Measurement &Control

基　　金：国家863计划课题(2015AA043702)

摘　　要：声发射检测技术作为一种先进的故障诊断技术,在大型起重设备检测行业"大行其道";由于生产现场的环境比较复杂,不可避免地要受到各种噪声的影响;当前对声发射信号大多是靠电缆进行传输,这种传输方式有传输距离有限、信号容易受到干扰等缺点;针对传统电缆传输信号的不足之处提出使用光纤作为传输信号的媒介,设计并开发了一种基于光纤的声发射监测的信号采集系统,能够实现远程监测且信号的抗干扰能力比较好。Acoustic emission detection technology as an advanced fault diagnosis technology, is widely used in the large--scale lifting e- quipment testing industry. The occurrence of interfere noise, the fashion of interfere and the effect to the system in the AE automatic online monitoring system is analyzed. At present, most of the acoustic emission signal transmission by cable, this way of transmission has a limited transmission distance, and signal easily disturbed. It proposed in this paper based on the optical fiber transmission technology, designed and developed a information collection system based on optical fiber acoustic emission monitoring. This way has the advantages of long distance transmission, strong anti--jamming capability.

关 键 词：声发射技术 光纤传输 信息采集 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]