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激光传感网络异常故障特征信号的定位与检测 被引量:7
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作者 叶聪相 章增优 《激光杂志》 北大核心 2017年第8期204-207,共4页
针对激光传感网络节点能耗不均匀,故障信号特征无法统一的问题,提出一种改进碰撞理论的激光传感网络异常故障特征检测技术,构建激光传感网络的拓扑结构及节点分布模型,引入碰撞思维进行激光传感网络异常特征的观测向量特征统一化衡量,... 针对激光传感网络节点能耗不均匀,故障信号特征无法统一的问题,提出一种改进碰撞理论的激光传感网络异常故障特征检测技术,构建激光传感网络的拓扑结构及节点分布模型,引入碰撞思维进行激光传感网络异常特征的观测向量特征统一化衡量,对在重构的观测向量特征空间提取激光传感网络统一化的异常特征,实现对激光传感网络异常特征的准确检测和定位。最后采用实验进行性能测试,结果表明,采用本文方法进行激光传感网络异常特征检测的准确概率较高,虚警概率较小,提高了激光传感网络故障的诊断分析能力。 展开更多
关键词 激光传感网络 碰撞思维 异常特征检测 故障诊断
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Anomaly Detection Method Using Feature Reconstruction Based Knowledge Distillation
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作者 ZHU Xin-yu SI Zhan-jun ZHANG Ying-xue 《印刷与数字媒体技术研究》 CAS 北大核心 2024年第4期115-124,236,共11页
In recent years,anomaly detection has attracted much attention in industrial production.As traditional anomaly detection methods usually rely on direct comparison of samples,they often ignore the intrinsic relationshi... In recent years,anomaly detection has attracted much attention in industrial production.As traditional anomaly detection methods usually rely on direct comparison of samples,they often ignore the intrinsic relationship between samples,resulting in poor accuracy in recognizing anomalous samples.To address this problem,a knowledge distillation anomaly detection method based on feature reconstruction was proposed in this study.Knowledge distillation was performed after inverting the structure of the teacher-student network to avoid the teacher-student network sharing the same inputs and similar structure.Representability was improved by using feature splicing to unify features at different levels,and the merged features were processed and reconstructed using an improved Transformer.The experimental results show that the proposed method achieves better performance on the MVTec dataset,verifying its effectiveness and feasibility in anomaly detection tasks.This study provides a new idea to improve the accuracy and efficiency of anomaly detection. 展开更多
关键词 Feature Reconstruction Anomaly Detection Distillation Mechanism Industrial Production
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