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Tool path strategy and cutting process monitoring in intelligent machining

Ming CHEN, Chengdong WANG, Qinglong AN, Weiwei MING

《机械工程前沿（英文）》 2018年第13卷第2期页码 232-242 doi: 10.1007/s11465-018-0469-y

摘要：

Intelligent machining is a current focus in advanced manufacturing technology, and is characterized by high accuracy and efficiency. A central technology of intelligent machining—the cutting process online monitoring and optimization—is urgently needed for mass production. In this research, the cutting process online monitoring and optimization in jet engine impeller machining, cranio-maxillofacial surgery, and hydraulic servo valve deburring are introduced as examples of intelligent machining. Results show that intelligent tool path optimization and cutting process online monitoring are efficient techniques for improving the efficiency, quality, and reliability of machining.

关键词： intelligent machining tool path strategy process optimization online monitoring

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Digital twin-enabled smart facility management: A bibliometric review

《工程管理前沿（英文）》 doi: 10.1007/s42524-023-0254-4

摘要： In recent years, the architecture, engineering, construction, and facility management (FM) industries have been applying various emerging digital technologies to facilitate the design, construction, and management of infrastructure facilities. Digital twin (DT) has emerged as a solution for enabling real-time data acquisition, transfer, analysis, and utilization for improved decision-making toward smart FM. Substantial research on DT for FM has been undertaken in the past decade. This paper presents a bibliometric analysis of the literature on DT for FM. A total of 248 research articles are obtained from the Scopus and Web of Science databases. VOSviewer is then utilized to conduct bibliometric analysis and visualize keyword co-occurrence, citation, and co-authorship networks; furthermore, the research topics, authors, sources, and countries contributing to the use of DT for FM are identified. The findings show that the current research of DT in FM focuses on building information modeling-based FM, artificial intelligence (AI)-based predictive maintenance, real-time cyber–physical system data integration, and facility lifecycle asset management. Several areas, such as AI-based real-time asset prognostics and health management, virtual-based intelligent infrastructure monitoring, deep learning-aided continuous improvement of the FM systems, semantically rich data interoperability throughout the facility lifecycle, and autonomous control feedback, need to be further studied. This review contributes to the body of knowledge on digital transformation and smart FM by identifying the landscape, state-of-the-art research trends, and future needs with regard to DT in FM.

关键词： digital twin building information modeling facility management semantic interoperability artificial intelligence intelligent monitoring autonomous control feedback

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高碾压混凝土坝智能碾压理论研究

刘东海,李丙扬,崔博

《中国工程科学》 2011年第13卷第12期页码 74-79

摘要：

给出了高碾压混凝土坝智能碾压的概念及实现过程，提出了大坝实时监控和智能反馈控制的原理；在实时分析压实指标的基础上，建立了大坝压实质量多元回归模型，进而提出了碾压混凝土坝压实度全仓面实时评价方法；实现了施工过程中碾压机工作性态的自适应调整，确保碾压机速度、激振力、碾压遍数和压实厚度等全过程达标，可有效保证碾压质量，提高施工效率，为碾压混凝土坝建设质量控制提供了一条新的途径。

关键词：碾压混凝土坝质量控制智能碾压实时监控质量实时评估

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WEIS wheel speed real-time measuring method for VOSM

Mengyao PAN, Guixiong LIU, Xiaobin HONG, Tusheng LIN,

《机械工程前沿（英文）》 2010年第5卷第3期页码 322-327 doi: 10.1007/s11465-010-0022-0

摘要： Wheel speed is one of the key parameters of vehicle operating attitude. To solve the problems in traditional wheel speed measuring methods, such as low measurement precision and the lack of real-time monitoring of the vehicle’s operating attitude, a wheel embedded intelligent sensors (WEIS) wheel speed measuring method for vehicle operating safety states monitoring (VOSM) is innovatively proposed. Radial acceleration signal is obtained through a WEIS module embedded in the hub. Using wavelet packet to implement wavelet de-noising for the non-stationary acceleration signals, and adopting short-time Fourier transform (STFT) algorithm to extract the signal characteristics, the wheel speed measurement can be achieved. The experimental result shows that under experimental conditions the speed measurement error is −2.05%, and the speed measuring response time is 0.45 s.

关键词： wheel embedded intelligent sensing wheel speed monitoring

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基于时空数据的地下空间基础设施智能监测系统 Review

杜博文, 叶俊辰, 朱合华, 孙磊磊, 杜彦良

《工程（英文）》 2023年第25卷第6期页码 194-203 doi: 10.1016/j.eng.2022.07.016

摘要：

基于时空大数据的智能感知、机理认知和劣化预知，不仅促进了基础设施安全的发展，同时也是基础设施建设向智能化转变的基础理论和关键技术。地下空间利用的发展，形成了深、大、聚的三大特征和立体的城市布局。然而，与地上的建筑物和桥梁相比，发生在地下的疾病和退化更为隐蔽，难以识别，在建设和服务期间仍然存在许多挑战。针对这一问题，本文总结了现有的方法，并在现实世界的空间安全管理中评估了它们的长处和短处，并在统一的智能监控系统中，讨论关键科学问题和解决方案。

关键词：结构健康监测地下空间结构机器学习时空数据

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智能楼宇远程监控系统的数据交互研究

段敬民, 王英, 宋永恒, 常辉

《中国工程科学》 2008年第10卷第8期页码 73-75

摘要：

楼宇的智能化体现了智能在楼宇控制中的应用，合理采用控制方法对建筑的智能化有着更高的保障，同时也带来了个性化。主要讨论了在远程控制智能楼宇中分布式技术交互的理论，并构造了一个高效的分布式控制网络数据交互服务端。

关键词：智能楼宇数据接口分布式 Web Service

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建筑环境智能监测与反馈系统——发展与应用 Article

耿阳, 张仲宸, 余娟, 陈洪钟, 周浩,林波荣, 庄惟敏

《工程（英文）》 2022年第18卷第11期页码 218-231 doi: 10.1016/j.eng.2021.09.017

摘要：

室内环境质量对人们的健康和福祉有显著影响，环境参数的连续监测与用户反馈已成为建筑业和学术界普遍关注的问题之一。现有关于环境监测系统的研究大多关注于传感器精度与成本效益的提升，而忽略了环境与用户之间的交互作用。为此，本团队开发了一种建筑环境智能监测与反馈系统，即智能建筑环境监测器（IBEM），既解决了室内环境参数的高时空分辨率、大通量、精准监测难题，又实现了环境与用户之间的反馈交互和主客观数据的同步采集。在硬件层面，IBEM集成了温度、相对湿度、PM_2.5、CO₂及照度多类传感器，并通过结构和电路优化设计减小了传感器之间的相互干扰，其测试精度经过与标准仪器的比对实验得到了有效验证，结果显示IBEM与标准仪器的测量数据基本一致，相关性强、误差小（R²> 0.97，拟合斜率介于1.01 和1.05 之间）。在软件层面，基于无线通信和云技术建立了Web 端和移动端的可视化平台与用户交互界面，形成了环境数据的信息流及环境数据与用户交互反馈的通路。目前，IBEM已在国内18 个城市的131 栋建筑中得到了广泛应用，测点数量共1188 个，典型应用场景包括了室内环境问题的靶向诊断、主客观环境数据的关联分析等。综上，IBEM为人居环境领域的学术研究和工程实践提供了重要技术支撑。

关键词：室内环境质量传感器连续监测图形用户界面交互反馈

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大型风力机组远程智能监测与诊断系统的研究与开发

杨文广,蒋东翔

《中国工程科学》 2015年第17卷第3期页码 24-29

摘要：

该文研究了大型风力机组的远程智能监测与诊断系统的关键技术问题，介绍了系统的开发情况。整个系统采用分布式架构，由数据采集与处理、实时数据存储、智能监测与诊断和人机交互4个子系统组成。智能监测与诊断子系统采用了知识库/推理机架构，推理机是一个自主开发的基于模糊Rete算法的模糊专家系统，知识库中存储了来源于风力机故障实验研究的常见振动故障的诊断知识。通过故障仿真，验证了整套系统的有效性。

关键词：风力机；故障诊断系统；模糊专家系统

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机泵群实时监测网络和故障诊断专家系统

高金吉

《中国工程科学》 2001年第3卷第9期页码 41-47

摘要：

应用现代信息技术和人工智能实施设备诊断工程，逐步实现状态维修和预知维修，是大型流程工业企业降低生产成本的重要途径之一。概要介绍为实现这一目标所开发的机电装备实时监测网络和人工智能诊断技术。简要介绍了基于Ethernet和FDDI开发、应用于石化企业的机、泵群实时监测网络；首次提出了黑灰白集合筛选法，在一次原因分析法和故障机理及其识别特征研究基础上，应用此方法开发的基于黑灰白集合筛选法的机械故障诊断专家系统，用于工程实践取得了满意的结果。

关键词：设备诊断工程实时监测网络人工智能诊断一次原因分析法黑灰白集合筛选法

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Non-invasive continuous blood pressure monitoring: a review of current applications

null

《医学前沿（英文）》 2013年第7卷第1期页码 91-101 doi: 10.1007/s11684-013-0239-5

摘要：

Blood pressure monitoring has come a long way from the initial observations made by Reverend Hales in the 18th century. There are none that deny the importance of monitoring perioperative blood pressure; however, the limited ability of the current prevalent technology (oscillometric blood pressure monitoring) to offer continuous blood pressure measurements leaves room for improvement. Invasive monitoring is able to detect beat-to-beat blood pressure measurement, but the risks inherent to the procedure make it unsuitable for routine use except when this risk is outweighed by the benefits. This review focuses on the discoveries which have led up to the current blood pressure monitoring technologies, and especially the creation of those offering non-invasive but continuous blood pressure monitoring capabilities, including their methods of measurement and limitations.

关键词： non-invasive blood pressure monitoring continuous blood pressure monitoring invasive blood pressure monitoring Riva-Rocci technique oscillometric Pe?áz technique arterial tonometry pulse transit time

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突发公共卫生事件智慧应急发展探讨

姚建义,金雅玲,汤晓勇,吴家兵,侯赛,刘晓青,张天琛,宋铁,肖建鹏,刘剑君

《中国工程科学》 2021年第23卷第5期页码 34-40 doi: 10.15302/J-SSCAE-2021.05.005

摘要：

构建信息化、数字化、智能化的智慧应急新模式，旨在解决目前我国突发公共卫生事件应对过程中快速响应机制、多部门统一协调协作、信息交互流程等方面存在的薄弱环节以及应急管理效率低下等问题，全面提升公共安全领域应对与处置能力。本文采用描述性研究法，较为全面地分析了国外公共卫生应急体系建设与智慧应急发展现状，准确梳理了我国卫生应急管理的需求、现状和存在问题；提出了我国公共卫生智慧应急体系的中长期发展目标、重大任务、实现技术途径。研究建议，规划实施卫生应急国家生物综合监测预警建设重大工程，制定和修订新型智慧化卫生应急相关的法律法规，保持应急管理机制的数据融通和可持续发展，促进智慧化卫生应急产业发展，推动行业人才队伍“医防融合”，高水平建设我国预防型公共卫生应急体系网络。

关键词：智慧应急监测预警应急作业医防融合

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Continuous dynamic monitoring of a centenary iron bridge for structural modification assessment

Carmelo GENTILE,Antonella SAISI

《结构与土木工程前沿（英文）》 2015年第9卷第1期页码 26-41 doi: 10.1007/s11709-014-0284-4

摘要： A multi-channel continuous dynamic monitoring system has been installed in a centenary iron arch bridge on late November 2011. The historic infrastructure, completed in 1889 and crossing the Adda river about 50 km far from Milan, is the most important monument of XIX century iron architecture in Italy and is still used as roadway and railway bridge. The monitoring project follows a series of preliminary ambient vibration tests carried out on the bridge since June 2009. The paper describes the bridge structure and its dynamic characteristics identified from the experimental studies developed since 2009, the installed monitoring system and the software developed in LabVIEW for automatically processing the collected data. Subsequently, the tracking of automatically identified natural frequencies over a period of about 18 months is presented and discussed, highlighting the effects of environmental and operational conditions on the bridge dynamic characteristics as well as the detection of structural changes, mainly based on natural frequencies shifts.

关键词： automated modal identification continuous dynamic monitoring environmental/operational effects iron arch bridge structural health monitoring

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In-situ condition monitoring of reinforced concrete structures

Sanjeev Kumar VERMA,Sudhir Singh BHADAURIA,Saleem AKHTAR

《结构与土木工程前沿（英文）》 2016年第10卷第4期页码 420-437 doi: 10.1007/s11709-016-0336-z

摘要： Performance of concrete structures is significantly influenced and governed by its durability and resistance to environmental or exposure conditions, apart from its physical strength. It can be monitored, evaluated and predicted through modeling of physical deterioration mechanisms, performance characteristics and parameters and condition monitoring of in situ concrete structures. One such study has been conducted using Non-destructive testing equipment in the city of Bhopal and around located in India. Some selected parameters influencing durability of reinforced concrete (RC) structures such as concrete cover, carbonation depth, chloride concentration, half cell potential and compressive strength have been measured, for establishing correlation among various parameters and age of structures. Effects of concrete cover and compressive strength over the variation of chloride content with time are also investigated.

关键词： concrete carbonation chloride corrosion monitoring models

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Fatigue stress monitoring and analyses for steel box girder of Runyang Suspension Bridge

WANG Ying, LI Zhaoxia, WU Baijian

《结构与土木工程前沿（英文）》 2008年第2卷第3期页码 197-204 doi: 10.1007/s11709-008-0038-2

摘要： The monitoring of fatigue stress of steel bridge is a key issue of bridge health monitoring and safety assessment. This paper aims to find out the strain history features of the girder components of Runyang Suspension Bridge (RYSB) under vehicle and environmental loading during its first year of service based on the strain-history data recorded by structural health monitoring system installed in the bridge. The fatigue stress spectrums of steel box girders under normal traffic load, heavy trucks and typhoon loads were studied as well as the correlation between varying strain and temperature based on real-time monitoring of temperature histories. The results show that, monitoring on local strain in health monitoring systems of RYSB can effectively provide the information on fatigue stresses. The range of the equivalent fatigue stress on the monitoring location of the bridge is currently low, mainly due to varying traffic loading and temperature. There exists significant correlation between varying temperature and mean value of fatigue stress. Effect of the passing of heavy trucks on bridge fatigue is quite significant since the value of the cumulative fatigue damage generated by heavy trucks is 10 to 100 times larger than that by normal traffic. Therefore, the effect on fatigue cumulative damage due to heavy trucks or overloaded vehicles needs to be monitored and paid much attention to.

关键词： bridge monitoring location RYSB traffic loading information

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Structural health monitoring with fiber optic sensors

F. ANSARI

《机械工程前沿（英文）》 2009年第4卷第2期页码 103-110 doi: 10.1007/s11465-009-0032-y

摘要： Optical fiber sensors have been successfully implemented in aeronautics, mechanical systems, and medical applications. Civil structures pose further challenges in monitoring mainly due to their large dimensions, diversity and heterogeneity of materials involved, and hostile construction environment. This article provides a summary of basic principles pertaining to practical health monitoring of civil engineering structures with optical fiber sensors. The issues discussed include basic sensor principles, strain transfer mechanism, sensor packaging, sensor placement in construction environment, and reliability and survivability of the sensors.

关键词： Bridges structural health monitoring smart skins cracks strains displacements fiber optic sensors FBG structures