医疗系统中插入式光纤光束耦合器故障点自动定位方法
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摘要
为了保证医疗系统的正常运行,提高医疗系统中插入式光纤光束耦合器的运维效率,需要及时对耦合器故障点进行定位,针对当前耦合器故障点定位方法中存在的定位误差较大,定位过程耗时较长等问题,提出基于小波变换与集合论的医疗系统中插入式光纤光束耦合器故障点自动定位方法。采集医疗系统中插入式光纤光束耦合器光信号后,利用小波变换结合阈值去噪法处理采集信号,削弱噪声干扰信号,增强有用信号的信噪比;对于增强后信号,采用小波变换法进行信号异常性检测,并确定异常点近邻域,得到异常点范围后,综合集合论实现耦合器故障点自动定位。实验结果表明,所提耦合器故障点定位方法的运行时间明显短于实验对比方法,且定位误差率更低,具备可行性。
In order to ensure the normal operation of the medical system and improve the operation and maintenance efficiency of the plug-in fiber optic coupler in the medical system,it is necessary to locate the coupler fault point in time,which has a large positioning error in the current coupler fault point location method. The positioning process takes a long time,and the fault location automatic positioning method of the inserted fiber optic beam coupler in the medical system based on wavelet transform and set theory is proposed. After the optical signal of the inserted fiber beam coupler in the medical system is collected,the wavelet signal is combined with the threshold denoising method to process the collected signal. The noise interference signal is weakened,and the signal-to-noise ratio of the useful signal is enhanced. For the enhanced signal,the wavelet transform method is used for the signal. The abnormality detection is performed,and the near-neighbor domain of the abnormal point is determined. After the range of the abnormal point is obtained,the set theory is integrated to realize the automatic positioning of the coupler fault point. The experimental results show that the running time of the proposed fault point location method is significantly shorter than the experimental comparison method,and the positioning error rate is lower and more feasible.
In order to ensure the normal operation of the medical system and improve the operation and maintenance efficiency of the plug-in fiber optic coupler in the medical system,it is necessary to locate the coupler fault point in time,which has a large positioning error in the current coupler fault point location method. The positioning process takes a long time,and the fault location automatic positioning method of the inserted fiber optic beam coupler in the medical system based on wavelet transform and set theory is proposed. After the optical signal of the inserted fiber beam coupler in the medical system is collected,the wavelet signal is combined with the threshold denoising method to process the collected signal. The noise interference signal is weakened,and the signal-to-noise ratio of the useful signal is enhanced. For the enhanced signal,the wavelet transform method is used for the signal. The abnormality detection is performed,and the near-neighbor domain of the abnormal point is determined. After the range of the abnormal point is obtained,the set theory is integrated to realize the automatic positioning of the coupler fault point. The experimental results show that the running time of the proposed fault point location method is significantly shorter than the experimental comparison method,and the positioning error rate is lower and more feasible.
引文
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[13]张鑫,刘海涛.光学异常透射研究进展[J].物理学进展,2016,36(4):118-127.
[14]孙鑫,冯敏,王斌,等.非对称领结型纳米孔阵列的光透射特性(英文)[J].光散射学报,2016,28(3):285-292.
[15]岑翼刚,王文强,李昂,等.显著性光流直方图字典表示的群体异常事件检测[J].信号处理,2017,33(3):330-337.
[16]高昇宇,王春宁,顾承阳.基于全光纤技术的电缆故障运行监测系统[J].电气技术,2016,17(9):142-144.
[2]毛欣,黄俊斌,顾宏灿.采用3×3耦合器的分布反馈式光纤激光传感器解调技术[J].发光学报,2017,38(3):395-401.
[3]陈霄,肖起榕,闫平,等.高功率光纤激光信号耦合器[J].红外与毫米波学报,2016,35(1):15-20.
[4]丁蕊,朱益清,姚晓天.熔融拉制微纳光纤耦合器的仿真模拟[J].激光技术,2018,42(4):462-462.
[5]李枫,耿超,李新阳,等.基于光纤耦合器的全光纤链路锁相控制[J].光电工程,2017,44(6):602-609.
[6]李晓敏,高妍,王宇,等.基于光纤传感技术的局部放电超声信号检测方法研究[J].传感技术学报,2017,30(11):1619-1624.
[7]喻琦,石彦彬,邱诗鹏.光网智能判障及一键修复技术研究与实践[J].电信科学,2016,32(9):132-138.
[8]李响,李彦,刘革明.光纤纵联保护通道故障在线诊断方法[J].电力系统保护与控制,2016,44(2):147-150.
[9]郝瑞宇.分布式PT对称非线性耦合器中光纤孤子间的相互作用[J].量子电子学报,2016,33(3):338-342.
[10]李冰,赵瑞莲,詹萍萍,等.导光管式高隔离电压光电耦合器击穿机理研究[J].半导体光电,2018,39(2):174-177.
[11]叶虎,崔新红,熊正锋.紧凑型菱形缝隙V波段过模圆波导选模耦合器[J].强激光与粒子束,2016,28(9):86-90.
[12]王丙元,田坤,张丹丹,等.全光网中采用可信度模型的故障定位技术[J].西安电子科技大学学报(自然科学版),2016,43(6):152-157.
[13]张鑫,刘海涛.光学异常透射研究进展[J].物理学进展,2016,36(4):118-127.
[14]孙鑫,冯敏,王斌,等.非对称领结型纳米孔阵列的光透射特性(英文)[J].光散射学报,2016,28(3):285-292.
[15]岑翼刚,王文强,李昂,等.显著性光流直方图字典表示的群体异常事件检测[J].信号处理,2017,33(3):330-337.
[16]高昇宇,王春宁,顾承阳.基于全光纤技术的电缆故障运行监测系统[J].电气技术,2016,17(9):142-144.