Article(id=1172169534199939453, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1172169457649697117, articleNumber=1009-2617(2025)04-0567-09, orderNo=null, doi=10.13355/j.cnki.sfyj.2025.04.017, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1729699200000, receivedDateStr=2024-10-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1757396594810, onlineDateStr=2025-09-09, pubDate=1755619200000, pubDateStr=2025-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1757396594810, onlineIssueDateStr=2025-09-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1757396594810, creator=13701087609, updateTime=1757396594810, updator=13701087609, issue=Issue{id=1172169457649697117, tenantId=1146029695717560320, journalId=1146120122248306696, year='2025', volume='44', issue='4', pageStart='433', pageEnd='581', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1757396576558, creator=13701087609, updateTime=1757401820494, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1172191452378547078, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1172169457649697117, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1172191452378547079, tenantId=1146029695717560320, journalId=1146120122248306696, issueId=1172169457649697117, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=567, endPage=575, ext={EN=ArticleExt(id=1172169534862639487, articleId=1172169534199939453, tenantId=1146029695717560320, journalId=1146120122248306696, language=EN, title=Fault Diagnosis Based on an Improved CNN-Bi-LSTM Model and Evaluation of Hydrometallurgical Processes Using an Enhanced Random Forest Model, columnId=1152626641181700664, journalTitle=Hydrometallurgy of China, columnName=Experiment Research, runingTitle=null, highlight=null, articleAbstract=
To address the issues of simplicity and weak generalization in current fault diagnosis models,an improved CNN-Bi-LSTM model is employed for fault diagnosis in hydrometallurgical processes.Based on the diagnostic results,an enhanced random forest model is utilized to evaluate the entire hydrometallurgical process.The results indicate that the fault diagnosis accuracy can reach 90.7%,significantly surpassing accuracy of the existing rule-based diagnostic system at the factory(78.4%).Additionally,the fault detection response time is maintained within 2 seconds,ensuring real-time monitoring and rapid response during the process.
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为解决目前的故障诊断模型较为简单、泛化能力较弱等问题,采用改进CNN-Bi-LSTM模型进行湿法冶金流程故障诊断,再根据故障诊断的结果数据,采用改进随机森林模型进行湿法冶金全流程的评价。结果表明:故障诊断准确率达90.7%,远超该工厂原有基于经验规则的诊断系统的准确率(78.4%),且模型的故障检测响应时间控制在2 s内,确保了工艺过程中的实时监控和快速响应。
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郭静博(1982—),女,硕士,副教授,主要研究方向为人工智能、教学改革。
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郭静博(1982—),女,硕士,副教授,主要研究方向为人工智能、教学改革。
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郭静博(1982—),女,硕士,副教授,主要研究方向为人工智能、教学改革。
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43(5):1397-1403., articleTitle=Text similarity calculation method using improved Bi-LSTM, refAbstract=null)], funds=[Fund(id=1172189946220761978, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, awardId=23B880046, language=CN, fundingSource=河南省高等学校重点科研项目(23B880046), fundOrder=null, country=null), Fund(id=1172189946313036667, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, awardId=JYB2023270, language=CN, fundingSource=河南省大中专院校就业创业课题(JYB2023270), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1172189942773044040, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, xref=null, ext=[AuthorCompanyExt(id=1172189942781432649, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, companyId=1172189942773044040, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Department of Computer Science and Applications,Pingdingshan Vocational and Technical College,Pingdingshan 467000,China), AuthorCompanyExt(id=1172189942785626954, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, companyId=1172189942773044040, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=平顶山职业技术学院 计算机科学与应用系,河南 平顶山 467000)])], figs=[ArticleFig(id=1172189944111027041, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Fig.1, caption=
Structure of the CNN-Bi-LSTM model, figureFileSmall=wFgqfiiCkVviWaTo401n/Q==, figureFileBig=C+fKPDg8USos2oGsekRkLg==, tableContent=null), ArticleFig(id=1172189944186524514, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=图1, caption=
CNN-Bi-LSTM模型的结构, figureFileSmall=wFgqfiiCkVviWaTo401n/Q==, figureFileBig=C+fKPDg8USos2oGsekRkLg==, tableContent=null), ArticleFig(id=1172189944316547940, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Fig.2, caption=
Flowchart of model computation for improved random forests, figureFileSmall=ruxRfxVJ/MKq923XQSs7Pg==, figureFileBig=IqcSDLT7sAOgOi3IdY8rHA==, tableContent=null), ArticleFig(id=1172189944438182758, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=图2, caption=
改进的随机森林的模型计算流程, figureFileSmall=ruxRfxVJ/MKq923XQSs7Pg==, figureFileBig=IqcSDLT7sAOgOi3IdY8rHA==, tableContent=null), ArticleFig(id=1172189944576594792, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Table 1, caption=
Basic information about device exceptions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 设备 | 异常情况 | 可能的原因 | 影响 |
| 搅拌槽 | 搅拌桨堵塞 | 杂质沉积或颗粒堆积 | 影响溶液均匀性,降低浸出效率 |
| 泵 | 流量不足 | 管道堵塞、泵磨损或密封件泄漏 | 流体输送效率降低,影响生产连续性 |
| 换热器 | 换热效率降低 | 管道结垢或腐蚀 | 温度控制失效,影响反应速度 |
| 压力容器 | 压力异常升高或泄漏 | 超负荷运行或密封件老化 | 存在安全隐患,影响设备稳定性 |
| 浸出设备 | 浸出效率低 | 酸浓度不均、温度波动或搅拌不充分 | 浸出产率下降,资源利用率降低 |
| 过滤器 | 过滤效率下降或堵塞 | 滤材损耗或颗粒物堵塞 | 滤液不清,增加后续处理负担 |
| 电积设备 | 电极腐蚀或短路 | 电解液中杂质过多或电极材料选择不当 | 降低金属回收率,设备运行不稳定 |
| 流量计 | 流量读数异常 | 传感器故障或管道内颗粒沉积 | 流量监控失准,影响工艺调控 |
| pH传感器 | pH读数偏离实际值 | 传感器污染或老化 | 酸碱度控制失效,影响浸出反应 |
| 压力传感器 | 压力信号波动 | 传感器失灵或设备密封异常 | 压力调控失准,可能引发安全风险 |
), ArticleFig(id=1172189944715006825, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=表1, caption=
设备发生异常情况的基本信息
, figureFileSmall=null, figureFileBig=null, tableContent=
| 设备 | 异常情况 | 可能的原因 | 影响 |
| 搅拌槽 | 搅拌桨堵塞 | 杂质沉积或颗粒堆积 | 影响溶液均匀性,降低浸出效率 |
| 泵 | 流量不足 | 管道堵塞、泵磨损或密封件泄漏 | 流体输送效率降低,影响生产连续性 |
| 换热器 | 换热效率降低 | 管道结垢或腐蚀 | 温度控制失效,影响反应速度 |
| 压力容器 | 压力异常升高或泄漏 | 超负荷运行或密封件老化 | 存在安全隐患,影响设备稳定性 |
| 浸出设备 | 浸出效率低 | 酸浓度不均、温度波动或搅拌不充分 | 浸出产率下降,资源利用率降低 |
| 过滤器 | 过滤效率下降或堵塞 | 滤材损耗或颗粒物堵塞 | 滤液不清,增加后续处理负担 |
| 电积设备 | 电极腐蚀或短路 | 电解液中杂质过多或电极材料选择不当 | 降低金属回收率,设备运行不稳定 |
| 流量计 | 流量读数异常 | 传感器故障或管道内颗粒沉积 | 流量监控失准,影响工艺调控 |
| pH传感器 | pH读数偏离实际值 | 传感器污染或老化 | 酸碱度控制失效,影响浸出反应 |
| 压力传感器 | 压力信号波动 | 传感器失灵或设备密封异常 | 压力调控失准,可能引发安全风险 |
), ArticleFig(id=1172189944815670122, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Table 2, caption=
Comparative test results of different process evaluation models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 传统随机森林 | 78.4 | 76.8 | 75.2 | 78.5 |
| 改进随机森林(无权重和剪枝) | 85.6 | 84.1 | 83.2 | 85.9 |
| 改进随机森林(有权重和剪枝) | 92.7 | 91.3 | 90.2 | 93.1 |
), ArticleFig(id=1172189944891167595, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=表2, caption=
不同流程评价模型的对比试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 传统随机森林 | 78.4 | 76.8 | 75.2 | 78.5 |
| 改进随机森林(无权重和剪枝) | 85.6 | 84.1 | 83.2 | 85.9 |
| 改进随机森林(有权重和剪枝) | 92.7 | 91.3 | 90.2 | 93.1 |
), ArticleFig(id=1172189944949887852, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Table 3, caption=
Comparative test results of different feature fusion strategies
, figureFileSmall=null, figureFileBig=null, tableContent=
| 特征组合 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 仅故障检测数据 | 80.2 | 79.1 | 78.4 | 80.6 |
| 仅工艺数据 | 82.9 | 81.5 | 80.7 | 83.2 |
| 故障检测数据与工艺数据融合 | 92.7 | 91.3 | 90.2 | 93.1 |
), ArticleFig(id=1172189945054745453, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=表3, caption=
不同特征融合策略的对比试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 特征组合 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 仅故障检测数据 | 80.2 | 79.1 | 78.4 | 80.6 |
| 仅工艺数据 | 82.9 | 81.5 | 80.7 | 83.2 |
| 故障检测数据与工艺数据融合 | 92.7 | 91.3 | 90.2 | 93.1 |
), ArticleFig(id=1172189945197351790, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Table 4, caption=
Comparative test results of of comparison of pruning depth
, figureFileSmall=null, figureFileBig=null, tableContent=
| 剪枝深度 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 无剪枝 | 85.6 | 84.1 | 83.2 | 85.9 |
| 剪枝深度3层 | 90.1 | 88.7 | 87.5 | 90.5 |
| 剪枝深度5层 | 92.7 | 91.3 | 90.2 | 93.1 |
), ArticleFig(id=1172189945264460655, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=表4, caption=
剪枝深度的对比试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 剪枝深度 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 无剪枝 | 85.6 | 84.1 | 83.2 | 85.9 |
| 剪枝深度3层 | 90.1 | 88.7 | 87.5 | 90.5 |
| 剪枝深度5层 | 92.7 | 91.3 | 90.2 | 93.1 |
), ArticleFig(id=1172189945386095472, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Table 5, caption=
Comparative test results of model integration approaches
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 改进随机森林 | 92.7 | 91.3 | 90.2 | 93.1 |
| XGBoost | 90.5 | 89.1 | 88.0 | 90.8 |
| LightGBM | 91.2 | 89.9 | 89.1 | 91.5 |
), ArticleFig(id=1172189945457398641, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=表5, caption=
模型集成方式的对比试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 改进随机森林 | 92.7 | 91.3 | 90.2 | 93.1 |
| XGBoost | 90.5 | 89.1 | 88.0 | 90.8 |
| LightGBM | 91.2 | 89.9 | 89.1 | 91.5 |
), ArticleFig(id=1172189945520313202, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Table 6, caption=
Comparative test results with single CNN or LSTM models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| CNN[13] | 82.3 | 80.5 | 78.7 | 81.9 |
| LSTM[14] | 85.1 | 83.0 | 82.0 | 85.4 |
| 改进的CNN-Bi-LSTM | 92.7 | 91.3 | 90.2 | 93.1 |
), ArticleFig(id=1172189945591616371, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=表6, caption=
与单一CNN或LSTM模型的对比试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| CNN[13] | 82.3 | 80.5 | 78.7 | 81.9 |
| LSTM[14] | 85.1 | 83.0 | 82.0 | 85.4 |
| 改进的CNN-Bi-LSTM | 92.7 | 91.3 | 90.2 | 93.1 |
), ArticleFig(id=1172189945658725236, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Table 7, caption=
Comparative test results for different time series lengths
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时间窗口长度/min | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 5 | 88.1 | 86.5 | 85.0 | 88.7 |
| 10 | 92.7 | 91.3 | 90.2 | 93.1 |
| 15 | 90.3 | 88.9 | 87.5 | 91.5 |
), ArticleFig(id=1172189945730028405, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=表7, caption=
不同时间序列长度的对比试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| 时间窗口长度/min | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 5 | 88.1 | 86.5 | 85.0 | 88.7 |
| 10 | 92.7 | 91.3 | 90.2 | 93.1 |
| 15 | 90.3 | 88.9 | 87.5 | 91.5 |
), ArticleFig(id=1172189945843274614, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Table 8, caption=
Comparative test results of Bi-LSTM stacked structures with different number of layers
, figureFileSmall=null, figureFileBig=null, tableContent=
| Bi-LSTM层数 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 1层 | 89.2 | 87.5 | 86.1 | 88.8 |
| 2层 | 92.7 | 91.3 | 90.2 | 93.1 |
| 3层 | 91.4 | 89.9 | 88.7 | 91.8 |
), ArticleFig(id=1172189945910383479, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=表8, caption=
不同层数的Bi-LSTM堆叠结构的对比试验结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| Bi-LSTM层数 | 准确率/% | F1分数/% | 召回率/% | 精确率/% |
| 1层 | 89.2 | 87.5 | 86.1 | 88.8 |
| 2层 | 92.7 | 91.3 | 90.2 | 93.1 |
| 3层 | 91.4 | 89.9 | 88.7 | 91.8 |
), ArticleFig(id=1172189945973298040, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=EN, label=Table 9, caption=
Empirical research results of improved CNN-Bi-LSTM model
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| 项目 | 故障诊断准确率/% | 故障检测响应时间/s | 模型泛化能力 | 操作依赖性 |
| 改进的CNN-Bi-LSTM模型 | 90.7 | 2.0 | 强,适应复杂工况 | 自动化程度高,依赖少 |
| 工厂原有经验规则的诊断系统 | 78.4 | 5.5 | 弱,仅适用特定场景 | 手工干预较多,依赖经验 |
), ArticleFig(id=1172189946044601209, tenantId=1146029695717560320, journalId=1146120122248306696, articleId=1172169534199939453, language=CN, label=表9, caption=
改进的CNN-Bi-LSTM模型的实证研究结果
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| 项目 | 故障诊断准确率/% | 故障检测响应时间/s | 模型泛化能力 | 操作依赖性 |
| 改进的CNN-Bi-LSTM模型 | 90.7 | 2.0 | 强,适应复杂工况 | 自动化程度高,依赖少 |
| 工厂原有经验规则的诊断系统 | 78.4 | 5.5 | 弱,仅适用特定场景 | 手工干预较多,依赖经验 |
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