Article(id=1251535835120746893, tenantId=1146029695717560320, journalId=1251233871195320423, issueId=1251535833375912679, articleNumber=null, orderNo=null, doi=10.13190/j.jbupt.2025-060, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1749484800000, receivedDateStr=2025-06-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1776318995503, onlineDateStr=2026-04-16, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1776318995503, onlineIssueDateStr=2026-04-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1776318995503, creator=13701087609, updateTime=1776318995503, updator=13701087609, issue=Issue{id=1251535833375912679, tenantId=1146029695717560320, journalId=1251233871195320423, year='2025', volume='48', issue='5', pageStart='1', pageEnd='172', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1776318995087, creator=13701087609, updateTime=1776389324200, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1251830815148163525, tenantId=1146029695717560320, journalId=1251233871195320423, issueId=1251535833375912679, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1251830815148163526, tenantId=1146029695717560320, journalId=1251233871195320423, issueId=1251535833375912679, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=32, endPage=39, ext={EN=ArticleExt(id=1251535835435319695, articleId=1251535835120746893, tenantId=1146029695717560320, journalId=1251233871195320423, language=EN, title=A Prior Knowledge-Enhanced Semantic Representation Method for DVS Vibration Signals, columnId=1251535834252522218, journalTitle=Journal of Beijing University of Posts and Telecommunications, columnName=PAPERS, runingTitle=null, highlight=null, articleAbstract=
Addressing challenges in complex structural health monitoring arising from heterogeneous sensor node sampling, feature drift, and limited model generalization ability in distributed vibration signals, this study constructs a distributed vibration signal with augmented generation (DVSAG) dataset. It utilizes cross-diffusion for adaptive sampling while preserving the spatiotemporal correlation of the original signal, combines the frequency domain to unify input dimensions, and enhances inputs by calculating residuals using fault-free reference signals. A fault diagnosis network with a convolutional block attention module (CBAM) is designed to extract multi-scale features from distributed vibration signals. These features are converted into word embeddings, combined with user questions, and input into a distributed vibration signal large language model (DVSLLM). Finally, a feature alignment and semantic mapping framework is used to achieve fine-grained interaction from vibration signals to natural language. Experiments show that the proposed method effectively improves fault diagnosis accuracy and model generalization ability under multiple operating conditions, providing reliable support for multi-task decision-making in complex structural health monitoring.
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针对分布式振动信号在复杂结构健康监测中面临的传感器节点异构采样、特征漂移和模型泛化能力不足等问题,本研究通过构建分布式振动信号文本增强(DVSAG)数据集,利用交叉扩散在保留原始信号时空相关性的基础上进行自适应采样,结合频域来统一输入尺寸,以及使用无故障参考信号计算残差来增强输入。设计故障诊断网络与卷积块注意力机制(CBAM)提取分布式振动信号多尺度特征,将特征转换为词嵌入并结合非结构化文本输入到分布式振动信号大模型(DVSLLM),最后通过特征对齐与语义映射框架实现振动信号到自然语言的细粒度交互。实验表明,该方法有效提升了多工况下的故障诊断准确率和模型泛化能力,为复杂结构健康监测多任务决策提供了可靠支持。
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1.北京邮电大学 物联网监测预警应急管理部重点实验室,北京 100876)]), AuthorCompany(id=1251535841831633475, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, xref=2., ext=[AuthorCompanyExt(id=1251535841840022084, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, companyId=1251535841831633475, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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DVSLLM模型结构示意图, figureFileSmall=f8cfRw8RoiglVxKYduilww==, figureFileBig=+PB5ta8Q7s5yu/t7QHj6qw==, tableContent=null), ArticleFig(id=1251535844478239441, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 数据集 | 采样率/kHz | 工况 | 采样距离/km | 采样时间/min | 文本描述 |
|---|
| Tremor | 1.0 | 10 | 55 | 1 | 无 |
| Sgs | 1.5 | 8 | 67 | 88 | 无 |
| GmrT | 2.4 | 12 | 3 | 30 | 无 |
| Brienz | 1.8 | 22 | 48 | 120 | 无 |
| DVSAG | 1.0~3.0 | 27 | 0~84 | 1~240 | 有 |
), ArticleFig(id=1251535844583097048, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=CN, label=表1, caption=
不同数据集对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 数据集 | 采样率/kHz | 工况 | 采样距离/km | 采样时间/min | 文本描述 |
|---|
| Tremor | 1.0 | 10 | 55 | 1 | 无 |
| Sgs | 1.5 | 8 | 67 | 88 | 无 |
| GmrT | 2.4 | 12 | 3 | 30 | 无 |
| Brienz | 1.8 | 22 | 48 | 120 | 无 |
| DVSAG | 1.0~3.0 | 27 | 0~84 | 1~240 | 有 |
), ArticleFig(id=1251535844687954653, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 任务序号 | 任务名称 | 输入数据类型 | 输出数据格式 | 评估指标 |
|---|
| 1 | 故障检测 | 原始振动信号 | 正常/故障 | 准确率 |
| 2 | 可靠性分析 | 长期监测信号 | 概率评分 | 校准误差 |
| 3 | 异常预警 | 时序振动模式 环境参数 | 低/中/高
| 误报率 |
| 4 | 故障诊断 | 振动信号 工况元数据 | 故障类型 分类标签 | 准确率/召 回率/F1 |
| 5 | 维护建议 | 振动信号 历史维护记录 | 结构化文本 建议 | 智能评估 通过率 |
| 6 | 寿命预测 | 振动信号 负载特征历程 | 数值预测 | MAE/R2 |
), ArticleFig(id=1251535844817978085, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=CN, label=表2, caption=
DVSAG数据集中设计的诊断任务
, figureFileSmall=null, figureFileBig=null, tableContent=
| 任务序号 | 任务名称 | 输入数据类型 | 输出数据格式 | 评估指标 |
|---|
| 1 | 故障检测 | 原始振动信号 | 正常/故障 | 准确率 |
| 2 | 可靠性分析 | 长期监测信号 | 概率评分 | 校准误差 |
| 3 | 异常预警 | 时序振动模式 环境参数 | 低/中/高
| 误报率 |
| 4 | 故障诊断 | 振动信号 工况元数据 | 故障类型 分类标签 | 准确率/召 回率/F1 |
| 5 | 维护建议 | 振动信号 历史维护记录 | 结构化文本 建议 | 智能评估 通过率 |
| 6 | 寿命预测 | 振动信号 负载特征历程 | 数值预测 | MAE/R2 |
), ArticleFig(id=1251535844952195820, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 层类型 | 结构参数 | 激活函数 | 输出维度 |
|---|
| C1 | 卷积核大小5×5 卷积通道128 | ReLU | 64×74×128 |
| B1 | — | — | 64×74×128 |
| CBAM1 | CAM+SAM | — | 64×74×128 |
| P1 | 池化大小2×2 | — | 32×37×128 |
| C2 | 卷积核大小5×5 卷积通道64 | ReLU | 32×37×64 |
| B2 | — | — | 32×37×64 |
| CBAM2 | CAM+SAM | — | 32×37×64 |
| P2 | 池化大小2×2 | — | 16×18×64 |
| C3 | 卷积核大小5×5 卷积通道3 | ReLU | 16×18×3 |
| B3 | — | — | 16×18×3 |
| CBAM3 | CAM+SAM | — | 16×18×3 |
| P3 | 池化大小2×2 | — | 1×1×3 |
| F | — | — | 3×3 |
| LF1 | 9×128 | ReLU | 128 |
| LF2 | 128 | Softmax | — |
), ArticleFig(id=1251535845023498994, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=CN, label=表3, caption=
DVSLLM模型网络的结构参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 层类型 | 结构参数 | 激活函数 | 输出维度 |
|---|
| C1 | 卷积核大小5×5 卷积通道128 | ReLU | 64×74×128 |
| B1 | — | — | 64×74×128 |
| CBAM1 | CAM+SAM | — | 64×74×128 |
| P1 | 池化大小2×2 | — | 32×37×128 |
| C2 | 卷积核大小5×5 卷积通道64 | ReLU | 32×37×64 |
| B2 | — | — | 32×37×64 |
| CBAM2 | CAM+SAM | — | 32×37×64 |
| P2 | 池化大小2×2 | — | 16×18×64 |
| C3 | 卷积核大小5×5 卷积通道3 | ReLU | 16×18×3 |
| B3 | — | — | 16×18×3 |
| CBAM3 | CAM+SAM | — | 16×18×3 |
| P3 | 池化大小2×2 | — | 1×1×3 |
| F | — | — | 3×3 |
| LF1 | 9×128 | ReLU | 128 |
| LF2 | 128 | Softmax | — |
), ArticleFig(id=1251535845107385079, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 1 | 2 | 3 | 4 | 5 | 6 |
|---|
| 准确率 | 校准误差 | 误报率 | 准确率 | 召回率 | F1分数 | 智能评估通过率 | MAE | R2 |
|---|
| DCNN | 47.32 | 44.07 | 26.98 | 62.12 | 67.82 | 70.18 | 72.42 | 65.86 | 51.45 |
| QCNN | 71.60 | 22.38 | 14.57 | 79.59 | 81.32 | 84.28 | 60.58 | 48.01 | 64.97 |
| Swin Transformer | 63.28 | 27.03 | 22.77 | 69.48 | 74.52 | 77.83 | 61.77 | 52.74 | 60.60 |
| EfficientNetV1 | 88.92 | 15.47 | 15.25 | 85.98 | 89.43 | 88.72 | 76.14 | 34.67 | 80.60 |
| DVSLLM | 94.32 | 7.68 | 5.97 | 89.34 | 94.52 | 96.58 | 89.78 | 23.21 | 87.13 |
), ArticleFig(id=1251535845178688254, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=CN, label=表4, caption=
不同方法在DVSAG数据集上的任务表现对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 1 | 2 | 3 | 4 | 5 | 6 |
|---|
| 准确率 | 校准误差 | 误报率 | 准确率 | 召回率 | F1分数 | 智能评估通过率 | MAE | R2 |
|---|
| DCNN | 47.32 | 44.07 | 26.98 | 62.12 | 67.82 | 70.18 | 72.42 | 65.86 | 51.45 |
| QCNN | 71.60 | 22.38 | 14.57 | 79.59 | 81.32 | 84.28 | 60.58 | 48.01 | 64.97 |
| Swin Transformer | 63.28 | 27.03 | 22.77 | 69.48 | 74.52 | 77.83 | 61.77 | 52.74 | 60.60 |
| EfficientNetV1 | 88.92 | 15.47 | 15.25 | 85.98 | 89.43 | 88.72 | 76.14 | 34.67 | 80.60 |
| DVSLLM | 94.32 | 7.68 | 5.97 | 89.34 | 94.52 | 96.58 | 89.78 | 23.21 | 87.13 |
), ArticleFig(id=1251535845266768647, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 任务4 | Tremor | Sgs | GmrT | Brienz | DVSAG |
|---|
| 准确率 | 召回率 | F1分数 | 准确率 | 召回率 | F1分数 | 准确率 | 召回率 | F1分数 | 准确率 | 召回率 | F1分数 | 准确率 | 召回率 | F1分数 |
|---|
| DCNN | 63.14 | 68.62 | 69.18 | 58.38 | 63.28 | 57.64 | 55.34 | 46.86 | 62.22 | 62.28 | 68.56 | 70.58 | 62.12 | 67.82 | 70.18 |
| QCNN | 79.39 | 71.32 | 74.48 | 68.59 | 57.77 | 71.12 | 59.96 | 63.21 | 67.43 | 71.34 | 77.76 | 79.92 | 79.59 | 81.32 | 84.28 |
| Swin Transformer | 64.88 | 67.46 | 75.81 | 66.28 | 69.18 | 68.45 | 67.51 | 65.52 | 62.02 | 63.48 | 59.84 | 65.59 | 69.48 | 74.52 | 77.83 |
| EfficientNetV1 | 82.87 | 83.33 | 85.27 | 87.46 | 85.98 | 86.18 | 81.40 | 79.94 | 83.18 | 84.08 | 89.75 | 88.57 | 85.98 | 89.43 | 88.72 |
| DVSLLM | 79.34 | 84.57 | 86.54 | 88.41 | 87.88 | 89.07 | 83.21 | 80.62 | 87.68 | 85.54 | 86.76 | 90.86 | 89.34 | 94.52 | 96.58 |
), ArticleFig(id=1251535845354849038, tenantId=1146029695717560320, journalId=1251233871195320423, articleId=1251535835120746893, language=CN, label=表5, caption=
不同方法在其他数据集上的任务表现对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 任务4 | Tremor | Sgs | GmrT | Brienz | DVSAG |
|---|
| 准确率 | 召回率 | F1分数 | 准确率 | 召回率 | F1分数 | 准确率 | 召回率 | F1分数 | 准确率 | 召回率 | F1分数 | 准确率 | 召回率 | F1分数 |
|---|
| DCNN | 63.14 | 68.62 | 69.18 | 58.38 | 63.28 | 57.64 | 55.34 | 46.86 | 62.22 | 62.28 | 68.56 | 70.58 | 62.12 | 67.82 | 70.18 |
| QCNN | 79.39 | 71.32 | 74.48 | 68.59 | 57.77 | 71.12 | 59.96 | 63.21 | 67.43 | 71.34 | 77.76 | 79.92 | 79.59 | 81.32 | 84.28 |
| Swin Transformer | 64.88 | 67.46 | 75.81 | 66.28 | 69.18 | 68.45 | 67.51 | 65.52 | 62.02 | 63.48 | 59.84 | 65.59 | 69.48 | 74.52 | 77.83 |
| EfficientNetV1 | 82.87 | 83.33 | 85.27 | 87.46 | 85.98 | 86.18 | 81.40 | 79.94 | 83.18 | 84.08 | 89.75 | 88.57 | 85.98 | 89.43 | 88.72 |
| DVSLLM | 79.34 | 84.57 | 86.54 | 88.41 | 87.88 | 89.07 | 83.21 | 80.62 | 87.68 | 85.54 | 86.76 | 90.86 | 89.34 | 94.52 | 96.58 |
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| 模型 | 准确率 |
|---|
| Tremor | GmrT | Sgs | Brienz | DVSAG |
|---|
| DVSLLM | 96.20 | 97.50 | 95.60 | 94.70 | 98.20 |
| Cross-Diffusion | 72.15 | 87.32 | 78.10 | 86.30 | 87.24 |
| CBAM | 81.50 | 84.60 | 85.90 | 89.10 | 91.10 |
| GCA | 79.20 | 88.50 | 90.60 | 91.70 | 94.32 |
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消融实验结果
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| 模型 | 准确率 |
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| Tremor | GmrT | Sgs | Brienz | DVSAG |
|---|
| DVSLLM | 96.20 | 97.50 | 95.60 | 94.70 | 98.20 |
| Cross-Diffusion | 72.15 | 87.32 | 78.10 | 86.30 | 87.24 |
| CBAM | 81.50 | 84.60 | 85.90 | 89.10 | 91.10 |
| GCA | 79.20 | 88.50 | 90.60 | 91.70 | 94.32 |
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| 超参数 | 优化范围 | 最优值 |
|---|
| nf | [6000,48000] | 24000 |
| 卷积层数 | [1,2,3,4,5] | 3 |
| 卷积通道数 | [32,64,128,256] | 128 |
| MLP层数 | [1,2,3,4,5] | 3 |
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超参数优化结果
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| 超参数 | 优化范围 | 最优值 |
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| 卷积通道数 | [32,64,128,256] | 128 |
| MLP层数 | [1,2,3,4,5] | 3 |
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