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A feasibility study of the measuring accuracy and capability of wireless sensor networks in tunnel monitoring

Xiaojun LI, Zhong JI, Hehua ZHU, Chen GU

《结构与土木工程前沿（英文）》 2012年第6卷第2期页码 111-120 doi: 10.1007/s11709-012-0150-1

摘要： Fire disasters and the deterioration of tunnel structures are major concerns for tunnel operation and maintenance. Traditional wired monitoring systems have many drawbacks in terms of installation time, overall cost, and flexibility in tunnel environments. In recent years, there has been growing interest in the use of wireless sensor networks (WSNs) for the monitoring of various structural monitoring applications. This paper evaluated the feasibility of applying a WSN in the monitoring of tunnels. The monitoring requirements of tunnels under explosion and combustion fire scenarios are analyzed using numerical simulation, and the maximum possible distance for temperature sensors is derived. The displacement monitoring of tunnels using an inclinometer is investigated. It is recommended that the inclinometer should be installed in the 1/4 span of the tunnel structure. The maximum wireless transmission distances in both outdoor and tunnel environments were examined. The influences of surface materials and sensor node locations on the data transmission distance in tunnel environments were also investigated. The experimental results show that the data loss in tunnel environments is approximately three times that in outdoor environments. Surface material has a considerable influence on the transmission distance of radio signals. The distance is 25 ? 28 m for a raw concrete surface, 20 m for a brick surface, and 36 m for a terrazzo surface. The transmission distances along the middle of quarter points are approximately 0.9 ( is the transmission distance in the center of the tunnel), and the relative error is less than±3%. The transmission distances at different locations along the bottom exhibit significant differences, decreasing from the middle to the corner point, with distances of approximately 0.8 at the quarter points and minimum distances of approximately 0.55 at the corner points.

关键词： wireless sensor network (WSN) tunnel monitoring feasibility study

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基于连通可靠度约束的分簇算法研究

于继明,孙亚民,雷艳静,杨余旺

《中国工程科学》 2010年第12卷第9期页码 73-77

摘要：

在研究了一些分簇算法基础上，提出基于连通可靠度约束的、适合大规模随机部署的快速成簇算法。仿真表明基于连通可靠度约束的快速成簇算法得到的分簇覆盖面广、簇头分布合理、稳定性强，与最小ID分簇及优化的最大连接数分簇算法相比，得到簇头数量少，分簇更合理，各成员节点与簇头的连通可靠度好，能保证网络的稳定性与健壮性，大大减少重构开销带来的通信代价，有利于均衡网络能量消耗，延长网络生命周期。

关键词：无线自组传感器网连通可靠度分簇算法

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Development and testing of a wireless smart toolholder with multi-sensor fusion

《机械工程前沿（英文）》 2023年第18卷第4期 doi: 10.1007/s11465-023-0774-y

摘要： The smart toolholder is the core component in the development of intelligent and precise manufacturing. It enables in situ monitoring of cutting data and machining accuracy evolution and has become a focal point in academic research and industrial applications. However, current table and rotational dynamometers for milling force, vibration, and temperature testing suffer from cumbersome installation and provide only a single acquisition signal, which limits their use in laboratory settings. In this study, we propose a wireless smart toolholder with multi-sensor fusion for simultaneous sensing of milling force, vibration, and temperature signals. We select force, vibration, and temperature sensors suitable for smart toolholder fusion to adapt to the cutting environment. Thereafter, structural design, circular runout, dynamic balancing, static stiffness, and dynamic inherent frequency tests are conducted to assess its dynamic and static performance. Finally, the smart toolholder is tested for accuracy and repeatability in terms of force, vibration, and temperature. Experimental results demonstrate that the smart toolholder accurately captures machining data with a relative deviation of less than 1.5% compared with existing force gauges and provides high repeatability of milling temperature and vibration signals. Therefore, it is a smart solution for machining condition monitoring.

关键词： wireless smart toolholder multi-sensor fusion circular runout dynamic balancing static stiffness dynamic inherent frequency

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基于遗传算法的传感器网络拓扑控制研究

刘林峰,庄艳艳,刘业

《中国工程科学》 2008年第10卷第2期页码 66-71

摘要：

无线传感器网络的首要设计目标是延长网络生命期，网络的拓扑控制是实现这一目标的支撑基础。针对传统拓扑控制方案所获拓扑的连通冗余度高或结构健壮性低等弊端，将问题转化为多判据最小生成树模型，提出了一种基于遗传算法的拓扑控制方案。仿真实验结果表明，该方案可获得具有网络整体功耗低、结构健壮性高和节点间通信干扰小等特点的拓扑结构，因而能够有效地延长传感器网络生命期。

关键词：无线传感器网络拓扑控制多判据最小生成树问题遗传算法

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An Internet-of-Things Initiative for One Belt One Road (OBOR)

Li Da Xu

《工程管理前沿（英文）》 2016年第3卷第3期页码 206-223 doi: 10.15302/J-FEM-2016039

摘要： A wide range of industrial Internet of Things (IoT) applications have been developed and deployed in recent years. IoT has provided a promising opportunity to build powerful industrial systems and applications by leveraging the growing ubiquity of RFID, wireless, mobile and sensor devices. In an effort to understand the development of IoT in industries, this paper reviews the current research of IoT, key enabling technologies, major IoT applications in industries, and identifies research trends and challenges. As IoT has received support from governments and businesses across the globe, IoT will also greatly impact One Belt One Road (OBOR) in foreseeable future.

关键词： Internet of Things (IoT) RFID Wireless Sensor Networks Near Field Communications ICT

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A preliminary research on wireless cantilever beam vibration sensor in bridge health monitoring

Xinlong TONG, Shanglin SONG, Linbing WANG, Hailu YANG

《结构与土木工程前沿（英文）》 2018年第12卷第2期页码 207-214 doi: 10.1007/s11709-017-0406-x

摘要： According to specific bridge environment, optimal design piezoelectric cantilever beam structure by using results of theoretical calculations and simulation, verify natural frequencies of piezoelectric cantilever beam and production ability of data by experiment, thus formed a complete set of design method of piezoelectric cantilever beam. Considering natural frequency of vibration and intensity of the beam body, design a new type of piezoelectric cantilever beam structure. Paper analyzes the principle of sensor data acquisition and transmission, design a hardware integration system include signal conversion module, microcontroller module and wireless transmission module, test local read and wireless transmission for the combination structure of cantilever beam and data collection card, experimental verification of the radio piezoelectric vibrating cantilever vibration response is intact, the beam produced signal by vibration, acquisition card converts and wireless transmit data, this proved a good and intuitive linear response in simulation of bridge vibration test. Finally, the paper designed a kind of new wireless sensor of vibration cantilever beam, suitable for small bridge health monitoring based on Internet of things.

关键词： piezoelectric cantilever beam bridge natural frequency wireless sensor

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基于室内传播模型的无线传感器网络节点部署策略研究

霍宏伟,郜帅,牛延超,张思东

《中国工程科学》 2008年第10卷第9期页码 64-69

摘要：

为保证在室内部署无线传感器网络节点时实现感知面积完全覆盖特定区域，在2.4 GHz的ISM频段，依据对数距离模型，分析了因天线高度不同引起的节点有效覆盖面积的变化问题，讨论了有效通信半径与有效感知半径的关系。在传统的平面节点部署方法的基础上，提出了一种考虑天线高度等环境因素的室内无线传感器网络节点快速部署方案，定义了部署规则和补充规则，从而避免了因天线高度变化而引起的感知黑洞的产生。仿真和试验结果表明该方案可以有效保证规定区域的完全覆盖，具有应用价值。

关键词：无线传感器网络通信半径感知半径感知黑洞覆盖

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基于互信息的水下无线传感器网络目标跟踪与加权融合 None

Duo ZHANG, Mei-qin LIU, Sen-lin ZHANG, Zhen FAN, Qun-fei ZHANG

《信息与电子工程前沿（英文）》 2018年第19卷第4期页码 544-556 doi: 10.1631/FITEE.1601695

摘要：水下无线传感器网络为水下目标跟踪问题提供了可靠有效支持，但水下网络能量和带宽资源有限，只能选择一部分节点参与跟踪任务。融合中心通过收集、融合各个传感器发送的量测进行目标跟踪，因此设计更好的融合权值极为重要。针对水下目标跟踪中的加权融合问题，首先通过计算量测与目标状态之间的互信息，利用互信息衡量融合权重；其次利用互信息融合权重设计一种新的多传感器加权粒子滤波算法，利用克拉美罗（Cramer-Rao）下界设计节点选择方案，以提高跟踪算法效率；最后通过仿真实验对算法进行验证。仿真结果表明，通过选择合适融合权值，目标状态估计精度显著提高。

关键词：目标跟踪；加权融合；互信息；节点选择；水下无线传感器网络

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一种有效的无线传感器网络失效链路定位方法 Article

Wen-yan CUI, Xiang-ru MENG, Bin-feng YANG, Huan-huan YANG, Zhi-yuan ZHAO

《信息与电子工程前沿（英文）》 2017年第18卷第5期页码 689-707 doi: 10.1631/FITEE.1601247

摘要：由于无线传感器网络中经常发生故障，网络故障管理对其维持正常运行状态非常重要。当前的故障定位方法通常先推断最有可能故障集，然后给出故障假设集。然而假设集中往往含有大量实际并未发生的故障。推断集中的冗余信息会大大加重故障推断的计算量，从而降低评估精度且增加故障定位时间。为了解决这个问题，本文提出了基于条件信息熵的冗余消除算法，该算法可以在保留核心信息的基础上消除大部分冗余信息。此外，还提出一种可以精确反映故障关系的概率关联故障模型，并为非确定性故障传播构建模型。通过一系列数学推导，本文将故障定位问题转化为覆盖件问题进行求解，并提出启发式算法推导故障假设集。在仿真环境和真实平台上验证了提出的方法相比现有故障定位方法的有效性。

关键词：失效链路定位；冗余消除算法；覆盖集；无线传感器网络；网络诊断

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无线多媒体传感器网络中端对端时延资源调配的多层次跨层协议 Regular Papers-Research Articles

Hossein HADADIAN NEJAD YOUSEFI, Yousef SEIFI KAVIAN, Alimorad MAHMOUDI

《信息与电子工程前沿（英文）》 2019年第20卷第9期页码 1266-1276 doi: 10.1631/FITEE.1700855

摘要：近年来信息和通信技术的讯速发展让无线多媒体传感器网络（WMSNs）面临重要挑战。在传感器网络多媒体应用中，端对端时延和可靠性是关键问题。本文提出一种新的跨层方法，使得网络端对端时延可以确保理想的数据包分组传送率（PDR），此处PDR被用来度量网络可靠性。在提出的多层次跨层（MLCL）协议中，利用远离接收器的跃点数设置每个节点级别。数据包通过以该级别设置的到接收器的最小越点数路径发送。该协议利用网络和多址接入协议（MAC）层之间跨层特性估计最小时延，在该时延下节点能够将数据包传送给接收器。当节点想要发送一个数据包时，MLCL协议会将最小时延与数据包存活时间（TTL）作比较。如果该数据包存活时间大于最小时延，节点通过最小时延路径发送数据包。否则，由于节点不能在TTL内将数据包发送至接收器而丢弃数据包。该数据包的丢弃能够提高网络性能，因为节点能够发送有用数据包以取代无用数据包。结果表明，与当前最先进协议相比，所提协议在端对端时延和可靠性方面表现出优越性能。

关键词：无线多媒体传感器网络；跨层；存活时间；端对端时延；服务质量

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Effects of environmental media on the transmission of an inductive link in wireless microsystems

Lei DONG, Li-Feng WANG, Qing-An HUANG

《机械工程前沿（英文）》 2017年第12卷第4期页码 554-556 doi: 10.1007/s11465-017-0450-1

摘要：

An inductive link between two magnetically coupled coils in wireless microsystems is modeled by considering an additional parasitic capacitive link to describe the effect of environmental media. With a system of inductor-capacitor passive wireless sensors, the effects of environmental media are studied theoretically and experimentally for the first time. Results suggest that the capacitive link is non-negligible when the distance between the two coupled coils is comparable with the coupling area, particularly when the environmental medium has a large dielectric constant.

关键词： capacitive link monitoring correction passive wireless sensor

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Low crosstalk switch unit for dense piezoelectric sensor networks

Lei QIU, Shenfang YUAN,

《机械工程前沿（英文）》 2009年第4卷第4期页码 401-406 doi: 10.1007/s11465-009-0047-4

摘要： Structural health monitoring (SHM), on the basis of piezoelectric (PZT) sensors and lamb wave method, is efficient in estimating the state of monitored structures. Furthermore, to monitor large-scale structures, dense piezoelectric sensor networks are required, which usually contain many piezoelectric sensor pairs called actuator-sensor channels. In that case, considering the few data acquisition channels especially in the data acquisition board with a high sampling rate and limited quantity of signal amplifiers used in an integrated computer system, a switch unit is adopted to switch to different channels. Because of the high frequency and power of the lamb wave excitation signal, there exists a crosstalk signal in the switch unit. A large crosstalk signal is mixed into the response signal so that the on/off-line signal processing task is difficult to achieve. This paper first analyzes the crosstalk signal phenomenon, describes its production mechanism, and proposes a method to reduce it. Then a 24-switch channel low crosstalk switch unit based on a digital I/O board PCI7248 produced by Adlink technology is developed. An experiment is implemented to validate it. Its low crosstalk characteristics make it promote the real application of the SHM based active lamb wave method. Finally, a general software program based on LabVIEW software platform is developed to control this switch unit.

关键词： structural health monitoring (SHM) piezoelectric (PZT) sensor networks switch unit crosstalk signal

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社会计算下的协作学习 None

Ricardo S. ALONSO, Javier PRIETO, Óscar GARCÍA, Juan M. CORCHADO

《信息与电子工程前沿（英文）》 2019年第20卷第2期页码 265-282 doi: 10.1631/FITEE.1700840

摘要：技术的引入使得教育创新极大地丰富起来，从而形成新的学习模型，其中，信息来自于多源，协作在学生之间产生。教育创新中一个有吸引力的挑战在于从社会计算视角设计协作学习活动，这里的协作不限于学生之间，也包括学生与机器的交互。与此同时，现阶段极其缺少工具，为学习的全过程而非学习任务的某些方面提供支持。为此，本文提出并评估支持协作学习的上下文感知构架（CAFCLA）。CAFCLA是一个覆盖协作学习全过程活动开发的灵活架构，可以利用上下文信息和社交互动。应用于某个博物馆的一个协作式WebQuest实验案例表明，使用社会计算可以改善学习过程，促进协作，增强关系，增加参与度。

关键词：上下文感知；协作学习；社会计算；虚拟组织；无线传感器网络；实时定位系统

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工业无线控制网络——从WIA向未来演进

于海斌, 曾鹏, 许驰

《工程（英文）》 2022年第8卷第1期页码 18-24 doi: 10.1016/j.eng.2021.06.024

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Novel sensing techniques for full-scale testing of civil structures

Kaoshan DAI, Zhenhua HUANG

《结构与土木工程前沿（英文）》 2012年第6卷第3期页码 240-256 doi: 10.1007/s11709-012-0172-8

摘要： Performing full-scale structural testing is an important methodology for researchers and engineers in the civil engineering industry. Full scale testing helps the researchers understand civil infrastructures’ loading scenarios, behaviors, and health conditions. It helps the engineers verify, polish, and simplify the structural design and analysis theories. To conduct a full-scale structural testing, sensors are used for data acquisitions. To help structural researchers and engineers get familiar with sensing technologies and select the most effective sensors, this study reviewed and categorized new sensing techniques for full-scale structural testing applications. The researchers of this study categorized sensors used for civil-infrastructure testing into traditional contact sensors and remote sensors based upon their application methodologies, and into cabled sensors and wireless sensors based upon their data communication strategies. The detailed descriptions of wireless sensors and remote sensing techniques and their on-site full-scale applications are presented.

关键词： sensing technique full-scale testing wireless sensor remote sensing LiDAR laser vibrometer