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Distance Matrix and Markov Chain Based Sensor Localization in WSN 认领 引用 被引量：2
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作者 Omaima Bamasaq Daniyal Alghazzawi +4 位作者 Surbhi Bhatia Pankaj Dadheech Farrukh Arslan Sudhakar Sengan Syed Hamid Hassan 《Computers, Materials & Continua》 SCIE EI 2022年第5期4051-4068,共18页
Applications based on Wireless Sensor Networks(WSN)have shown to be quite useful in monitoring a particular geographic area of interest.Relevant geometries of the surrounding environment are essential to establish a s... Applications based on Wireless Sensor Networks(WSN)have shown to be quite useful in monitoring a particular geographic area of interest.Relevant geometries of the surrounding environment are essential to establish a successful WSN topology.But it is literally hard because constructing a localization algorithm that tracks the exact location of Sensor Nodes(SN)in a WSN is always a challenging task.In this research paper,Distance Matrix and Markov Chain(DM-MC)model is presented as node localization technique in which Distance Matrix and Estimation Matrix are used to identify the position of the node.The method further employs a Markov Chain Model(MCM)for energy optimization and interference reduction.Experiments are performed against two well-known models,and the results demonstrate that the proposed algorithm improves performance by using less network resources when compared to the existing models.Transition probability is used in the Markova chain to sustain higher energy nodes.Finally,the proposed Distance Matrix and Markov Chain model decrease energy use by 31%and 25%,respectively,compared to the existing DV-Hop and CSA methods.The experimental results were performed against two proven models,Distance VectorHop Algorithm(DV-HopA)and Crow Search Algorithm(CSA),showing that the proposed DM-MC model outperforms both the existing models regarding localization accuracy and Energy Consumption(EC).These results add to the credibility of the proposed DC-MC model as a better model for employing node localization while establishing a WSN framework. 展开更多
关键词 Wireless sensor network resource optimization routing distance matrix Markov chain
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Molecular Engineering of Benzobisoxazole-Based Conjugated Polymers for High-Performance Organic Photodetectors and Fingerprint Image Sensors 认领 引用 被引量：1
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作者 Cheol Shin WonJo Jeong +7 位作者 Ezgi Darici Lee Jong Baek Park Hyungju Ahn Seyeon Baek Myeong In Kim Dae Sung Chung Kang-Il Seo In Hwan Jung 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2025年第1期151-163,共13页
Various novel conjugated polymers(CPs)have been developed for organic photodetectors(OPDs),but their application to practical image sensors such as X-ray,R/G/B,and fingerprint sensors is rare.In this article,we report... Various novel conjugated polymers(CPs)have been developed for organic photodetectors(OPDs),but their application to practical image sensors such as X-ray,R/G/B,and fingerprint sensors is rare.In this article,we report the entire process from the synthesis and molecular engineering of novel CPs to the development of OPDs and fingerprint image sensors.We synthesized six benzo[1,2-d:4,5-d’]bis(oxazole)(BBO)-based CPs by modifying the alkyl side chains of the CPs.Several relationships between the molecular structure and the OPD performance were revealed,and increasing the number of linear octyl side chains on the conjugated backbone was the best way to improve Jph and reduce Jd in the OPDs.The optimized CP demonstrated promising OPD performance with a responsivity(R)of 0.22 A/W,specific detectivity(D*)of 1.05×1013Jones at a bias of-1 V,rising/falling response time of 2.9/6.9μs,and cut-off frequency(f-3dB)of 134 kHz under collimated 530 nm LED irradiation.Finally,a fingerprint image sensor was fabricated by stacking the POTB1-based OPD layer on the organic thin-film transistors(318 ppi).The image contrast caused by the valleys and ridges in the fingerprints was obtained as a digital signal. 展开更多
关键词 alkyl side chain engineering fingerprint image sensor on/off ratio organic photodetector specific detectivity
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A Chain Routing Algorithm Based on Traffic Prediction in Wireless Sensor Networks 认领 引用 被引量：1
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作者 Yi Sun Lei Xu +1 位作者 Xin Wu Minxuan Shen 《Communications and Network》 2013年第3期504-507,共4页
As a representative of chain-based protocol in Wireless Sensor Networks (WSNs), EEPB is an elegant solution on energy efficiency. However, in the latter part of the operation of the network, there is still a big probl... As a representative of chain-based protocol in Wireless Sensor Networks (WSNs), EEPB is an elegant solution on energy efficiency. However, in the latter part of the operation of the network, there is still a big problem: reserving energy of the node frequently presents the incapacity of directly communicating with the base station, at the same time capacity of data acquisition and transmission as normal nodes. If these nodes were selected as LEADER nodes, that will accelerate the death process and unevenness of energy consumption distribution among nodes.This paper proposed a chain routing algorithm based ontraffic prediction model (CRTP).The novel algorithmdesigns a threshold judgment method through introducing the traffic prediction model in the process of election of LEADER node. The process can be dynamically adjusted according to the flow forecasting. Therefore, this algorithm lets the energy consumption tend-ing to keep at same level. Simulation results show that CRTP has superior performance over EEPB in terms of balanced network energy consumption and the prolonged network life. 展开更多
关键词 Wireless Sensor Networks A Chain Routing Algorithm LEADER Node Traffic Prediction Model
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A Chain-Based Routing Protocol to Maximize the Lifetime of Wireless Sensor Networks 认领 引用 被引量：1
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作者 Mourad Hadjila Herve Guyennet Mohammed Feham 《Wireless Sensor Network》 2013年第5期116-120,共5页
Energy conservation is a key issue in the design of systems based on wireless sensor networks. Clustering routing protocols have been developed in order to reduce the network traffic toward the sink and therefore prol... Energy conservation is a key issue in the design of systems based on wireless sensor networks. Clustering routing protocols have been developed in order to reduce the network traffic toward the sink and therefore prolong the network lifetime. An alternative of clustering is to build chains instead of clusters. In this context, we propose a routing protocol for Wireless Sensor Networks (WSN). It is based on constructing multiple chains in the direction of the sink. The first node of each chain sends data to the closest node in the same chain. This latter collects, aggregates and transmits data to the next closest node. This process repeats until reaching the last node, which aggregates and transmits data directly to the sink. An improvement of this approach is proposed. It works as follows: In addition to forming multiple chains as previously, it constructs a main chain, which includes leader node of each chain. Since, initially all main chain nodes have the same amount of power, the nearest node to the sink aggregates data from others then transmits it to the sink. In the next transmission, main chain node having the higher residual energy performs this task. Compared with the first approach, simulation results show that improvement approach consumes less energy and effectively extends the network lifetime. 展开更多
关键词 Wireless Sensor Networks Chain Energy Conservation Lifetime
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一种基于沉潜油行为机理的拖曳式多传感器联合探测方法研究 认领 引用
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作者 吴培良 王智伟 +2 位作者 孔德明 崔永强 谢贝贝 《计量学报》 CSCD 北大核心 2026年第3期422-430,共9页
沉潜油是指处于悬浮和沉底状态的2类海上溢油。目前,对于其尚未建立起系统性探测与治理体系。为此,提出了一种沉潜油联合探测方法,该方法通过集成链式多节点传感器探测阵列和侧扫声呐系统,构建了一个拖曳式多传感器联合探测平台,有效突... 沉潜油是指处于悬浮和沉底状态的2类海上溢油。目前,对于其尚未建立起系统性探测与治理体系。为此,提出了一种沉潜油联合探测方法,该方法通过集成链式多节点传感器探测阵列和侧扫声呐系统,构建了一个拖曳式多传感器联合探测平台,有效突破了传统单一传感器在空间覆盖范围有限和探测信息维度不足方面的限制。研究了链式多节点传感探测阵列中的主、辅节点传感器,并针对半潜油探测中的浓度参数建立了量化模型。实验结果表明:基于主、辅节点传感器获取的数据并结合线性回归方法建立的浓度量化模型表现出良好的效果,决定性系数分别达到0.98、0.99和0.95、0.96,说明所研制的主、辅节点传感器对半潜油浓度具有良好的测量性能。 展开更多
关键词 沉潜油 浓度测量 半潜油 侧扫声呐 链式多节点传感器 探测阵列
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数据失衡状态下传感网络中单链小类别入侵数据检测方法 认领 引用
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作者 付思源 姜惠娟 《传感技术学报》 CAS CSCD 北大核心 2026年第5期1145-1152,共8页
网络节点分布不均衡导致传感器网络覆盖出现盲区,成为入侵者实施单链入侵等隐蔽攻击的跳板。由于单链入侵数据类别很小,在传感网络混合数据中处于数据失衡状态,而现有数据挖掘方法对小样本类别学习能力差,导致难以检测单链入侵数据。为... 网络节点分布不均衡导致传感器网络覆盖出现盲区,成为入侵者实施单链入侵等隐蔽攻击的跳板。由于单链入侵数据类别很小,在传感网络混合数据中处于数据失衡状态,而现有数据挖掘方法对小样本类别学习能力差,导致难以检测单链入侵数据。为此,研究数据失衡状态下传感网络中单链小类别入侵数据检测方法。利用单边选择链确定包含单链小类别入侵数据的数据集群,通过BIRCH过采样扩充数据集群,解决数据类别失衡问题。结合CNN与BiLSTM提取数据集群时空维度特征,并通过极端梯度提升与二阶泰勒展开式实现单链小类别入侵数据检测。结果表明,所提方法的G均值、F度量值均达到0.95以上,精确率和召回率最高分别为98.8%和98.5%,可精准检测到单链小类别入侵数据。 展开更多
关键词 传感器网络 入侵数据检测 单边选择链 采样权重 时空维度特征 极端梯度提升
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基于多源传感器融合的冷链温控异常识别与预警研究 认领 引用
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作者 贾苏绒 《自动化与仪器仪表》 2026年第6期345-349,共5页
针对冷链运输中温控异常识别精度低、预警响应滞后导致货损风险等问题,研究提出一种基于多源传感器融合的智能监测方法。通过时空数据融合处理多源传感器信息,结合注意力机制与长短期记忆网络构建异常温控识别算法与预警模型。结果显示... 针对冷链运输中温控异常识别精度低、预警响应滞后导致货损风险等问题,研究提出一种基于多源传感器融合的智能监测方法。通过时空数据融合处理多源传感器信息,结合注意力机制与长短期记忆网络构建异常温控识别算法与预警模型。结果显示,该识别算法在特征维度从100%降至25%时仍保持92.12%的准确率,性能衰减率控制在6.23%。另外,分级预警模型的平均响应时间缩短至28 s,误报率低于2.5%。实际运输测试中成功处置687次预警事件,总体成功率93.1%,其中94.2%的一级预警由司机层面解决。综上所述,研究所提方法显著提升了冷链运输的温控可靠性,为减少货品损失提供了有效的技术保障,为实现冷链物流的智能化管理和全程质量可控提供了重要的技术支撑和实践参考。 展开更多
关键词 冷链运输 多源传感器 时空数据融合 LSTM 温控异常 识别与预警
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Coverage of communication-based sensor nodes deployed location and energy efficient clustering algorithm in WSN 认领 引用 被引量：6
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作者 Xiang Gao Yintang Yang Duan Zhou 《Journal of Systems Engineering and Electronics》 SCIE EI 2010年第4期698-704,共7页
An effective algorithm based on signal coverage of effective communication and local energy-consumption saving strategy is proposed for the application in wireless sensor networks.This algorithm consists of two sub-al... An effective algorithm based on signal coverage of effective communication and local energy-consumption saving strategy is proposed for the application in wireless sensor networks.This algorithm consists of two sub-algorithms.One is the multi-hop partition subspaces clustering algorithm for ensuring local energybalanced consumption ascribed to the deployment from another algorithm of distributed locating deployment based on efficient communication coverage probability（DLD-ECCP）.DLD-ECCP makes use of the characteristics of Markov chain and probabilistic optimization to obtain the optimum topology and number of sensor nodes.Through simulation,the relative data demonstrate the advantages of the proposed approaches on saving hardware resources and energy consumption of networks. 展开更多
关键词 wireless sensor network probability distribution function Markov chain received signal strength indicator Gaussian distribution.
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A Phenyl Sulfide Functionalized Luminescent Sensors for Efficient Fe3+ and Cr2O72- Ions Detection 认领 引用 被引量：1
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作者 XU Han PAN Zhao-Rui 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2019年第12期2121-2128,共8页
A new complex, {[Cd（BIDPT）（NBA）]}n（1）, was synthesized from the selfassembly of BIDPT（BIDPT = 4,4?-bis（imidazol-l-yl）diphenyl thioether） and H2NBA（H2 NBA = 4,4?-azanediyldibenzoic acid） ligands with Cd（Ⅱ... A new complex, {[Cd（BIDPT）（NBA）]}n（1）, was synthesized from the selfassembly of BIDPT（BIDPT = 4,4?-bis（imidazol-l-yl）diphenyl thioether） and H2NBA（H2 NBA = 4,4?-azanediyldibenzoic acid） ligands with Cd（Ⅱ）. 1 was characterized by infrared spectroscopy, powder X-ray diffraction, elemental analysis, and thermogravimetry measurement. 1 crystallizes in monoclinic system, space group P21/c with a = 8.8204（1）, b = 29.835（3）, c = 10.3813（1） ?, β = 96.180（2）°, V = 2730.7（5） ?3, Z = 4, C32H22CdN5O4S, Mr = 685.01, Dc = 1.666 g/cm3, μ = 0.926 mm-1, R = 0.0548 and wR = 0.1528. 1 features a parallel structure with 3-connected hcb network and the adjacent 2 D networks are stacked together via C–H···π interaction to form a 3 D network. Its application in detecting metal cations and inorganic anions was explored. 1 exhibits excellent photoluminescence sensing for Fe3+ and Cr2O72- ions. And the mechanism of quenching is also studied. 展开更多
关键词 luminescent sensor helical chain quenching mechanism
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An Authenticated Dynamic Key Management Scheme for Clustered Sensor Networks 认领 引用 被引量：2
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作者 ZHOU Yajian PAN Anwei LI Jiguo 《China Communications》 SCIE 2010年第4期7-17,共11页
Secure sensor networks has received much attention in the last few years.A sensor network always works unattended possibly in a hostile environment such as a battlefield.In such environments,sensor networks are subjec... Secure sensor networks has received much attention in the last few years.A sensor network always works unattended possibly in a hostile environment such as a battlefield.In such environments,sensor networks are subject to node capture.Constrained energy,memory,and computational capabilities of sensor nodes mandate a clever design of security solutions to minimize overhead while maintaining secure communication over the lifespan of the network.In this paper,an authenticated dynamic key management scheme,ADKM has been proposed.It provides efficient,scalable,and survivable dynamic keying in a clustered sensor network with a large number of sensor nodes.ADKM employs a combinatorial exclusion basis system (EBS) for efficiency and one-way hash chains for authentication.Analysis of security and performance demonstrate that ADKM is efficient in security of sensor networks. 展开更多
关键词 Wireless Sensor Networks Key Management Exclusion Basis Systems One-way Hash Chain
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融合视觉标记的机器人里程计累计误差修正方法 认领 引用
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作者 杨林 梅雪松 陶怡 《传感器与微系统》 北大核心 2026年第5期25-30,共6页
针对室内移动机器人在长廊、玻璃幕墙等几何特征退化环境下,激光同步定位与地图构建(SLAM)与惯性导航累积误差发散的问题,提出一种融合视觉AprilTag路标的辅助定位与漂移修正方法。该方法建立包含地图、里程计及相机的多级坐标变换链模... 针对室内移动机器人在长廊、玻璃幕墙等几何特征退化环境下,激光同步定位与地图构建(SLAM)与惯性导航累积误差发散的问题,提出一种融合视觉AprilTag路标的辅助定位与漂移修正方法。该方法建立包含地图、里程计及相机的多级坐标变换链模型,通过透视n点(PnP)算法解算墙面路标的观测位姿;引入重投影误差评价机制剔除异常观测,利用李代数空间下的位姿差异实时更新里程计到全局地图的漂移补偿矩阵。实验结果表明,在包含动态干扰与透明介质的复杂场景中,该方法能有效抑制定位漂移,其轨迹均方根误差(RMSE)相比纯惯性导航和激光雷达(LiDAR)方法分别降低了92.4%和64.7%,显著提升了机器人在非结构化环境中的定位精度与鲁棒性。 展开更多
关键词 移动机器人 多级坐标链 传感器融合 累计误差 AprilTag 几何退化
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基于应变传感器的刮板输送机断链监测技术研究 认领 引用
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作者 何勇 闫震 《自动化仪表》 CAS 2026年第6期69-74,共6页
目前,对刮板输送机断链故障的监测以人工监测为主,导致智能化程度低,且缺少保障生产安全和提高设备可靠性的具体措施。对此,提出基于应变传感器的刮板输送机断链自动化监测技术。该技术结合应变传感器,分析刮板输送机断链识别的可行性,... 目前,对刮板输送机断链故障的监测以人工监测为主,导致智能化程度低,且缺少保障生产安全和提高设备可靠性的具体措施。对此,提出基于应变传感器的刮板输送机断链自动化监测技术。该技术结合应变传感器,分析刮板输送机断链识别的可行性,实时测量预张紧力和负载张力,并将数据传输至监测系统。系统通过设定阈值判断链条张力,并实时监测断链故障。试验结果表明,该技术能迅速响应断链事件,报警时间与实际断链时间几乎同步,报警记录与偏移距离吻合。该技术在输送机断链监测方面具有较高的准确性,适用于刮板输送机的断链故障监测。该研究为其他设备和系统的故障监测指明了方向。 展开更多
关键词 应变传感器 刮板输送机 断链监测 预张紧力 负载张力 偏移距离
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面向工业炉排渣安全的刮板链倾斜智能预警方法研究 认领 引用
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作者 王烽 张林 +3 位作者 刘贵生 高嵩翔 温辉 马吉 《工业加热》 CAS 2026年第7期64-66,共3页
目前,国内外针对工业炉排渣系统连同刮板链的研究,涉及结构优化、故障诊断以及运行控制等范畴。针对刮板链倾斜监测而言,传统手段多依赖人工定期查验,此方式既效率欠佳,实时察觉刮板链细微倾斜变动也颇为困难。重点关注工业炉排渣进程... 目前,国内外针对工业炉排渣系统连同刮板链的研究,涉及结构优化、故障诊断以及运行控制等范畴。针对刮板链倾斜监测而言,传统手段多依赖人工定期查验,此方式既效率欠佳,实时察觉刮板链细微倾斜变动也颇为困难。重点关注工业炉排渣进程中刮板链倾斜这一安全问题,对刮板链倾斜智能预警方法展开深入探究。剖析工业炉排渣系统与刮板链的工作原理、常见故障模式,点明刮板链倾斜对排渣安全造成的危害。基于多传感器融合的刮板链倾斜状态监测技术,阐释传感器选型及布置、数据采集与处理。提出一种借助机器学习的刮板链倾斜智能预警算法,该算法的有效性与准确性借由实验予以验证。对智能预警系统进行构建并开展实际应用测试,结果显示该系统能够及时且精准地发出刮板链倾斜预警,切实保障工业炉排渣的安全。 展开更多
关键词 工业炉 排渣安全 刮板链 智能化预警 多传感器
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物联网技术在食品流通环节检验监测中的应用优化 认领 引用
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作者 王光瑞 高艳 《食品安全导刊》 2026年第11期177-180,共4页
生鲜冷链流通普遍存在冷链监测分段割裂、预警处置滞后、跨环节数据孤岛等行业共性难题,温控偏差与信息脱节进一步加剧生鲜损耗与食品安全隐患。依托多传感器融合、远距离无线电(LoRa)与5G混合组网、数据中台和智能预警搭建物联网监测方... 生鲜冷链流通普遍存在冷链监测分段割裂、预警处置滞后、跨环节数据孤岛等行业共性难题,温控偏差与信息脱节进一步加剧生鲜损耗与食品安全隐患。依托多传感器融合、远距离无线电(LoRa)与5G混合组网、数据中台和智能预警搭建物联网监测方案,可精准优化冷链全流程动态管控,完善全链条食品安全溯源体系,促进生鲜供应链实现低损耗、可溯源、智能化管控。 展开更多
关键词 物联网技术 食品流通 冷链监测 多传感器融合
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IoT-Enabled RFID in Supply Chain Management: A Comprehensive Survey and Future Directions 认领 引用
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作者 Jannatul Ferdousmou Mani Prabha +3 位作者 MD Omar Farouk MD Samiun Hasan Mahmud Sozib Al Modabbir Zaman 《Journal of Computer and Communications》 2024年第11期207-223,共17页
Radio frequency identification (RFID) has emerged as a pivotal technology in supply chain management (SCM), significantly enhancing its efficiency and effectiveness. When integrated with the internet of things (IoT) t... Radio frequency identification (RFID) has emerged as a pivotal technology in supply chain management (SCM), significantly enhancing its efficiency and effectiveness. When integrated with the internet of things (IoT) to form RFID-IoT, this technology brings transformative advancements to SCM, enabling automated sensing, pervasive computing, and ubiquitous data access across the entire supply chain, from manufacturers and distributors to retailers and consumers. This integration facilitates real-time identification and monitoring of products, enhances various processes, improves logistic tracking, and ensures better product quality management. Despite its promising benefits, the adoption of RFID-IoT in SCM faces several challenges, including technical complexities, data security concerns, and high implementation costs. However, the future potential of RFID-IoT technology remains substantial. It is anticipated that further integration with other emerging technologies, such as block chain and artificial intelligence, will lead to more comprehensive and robust SCM solutions, offering unprecedented levels of transparency, efficiency, and automation in supply chain operations. 展开更多
关键词 Radio Frequency Identification Supply Chain Management Internet of Things Logistic Tracking Data security Wireless Sensor Networks Block Chain Artificial Intelligence RFID-IoT Integration Real-Time Supply Chain Monitoring Inventory Management Automation Logistics Optimization
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基于改进布谷鸟搜索算法的无线传感器网络覆盖优化 认领 引用 被引量：3
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作者 周恺卿 杨森宇 +1 位作者 康棣文 欧云 《河南理工大学学报（自然科学版）》 CAS 北大核心 2025年第4期48-58,141,共11页
目的为了提高无线传感器网络(wireless sensor network,WSN)覆盖率,提出一种针对WSN覆盖优化的改进布谷鸟搜索(improved cuckoo search with multi-strategies,ICS-MS)算法。方法ICS-MS算法基于对标准布谷鸟搜索算法的寻优过程进行分析... 目的为了提高无线传感器网络(wireless sensor network,WSN)覆盖率,提出一种针对WSN覆盖优化的改进布谷鸟搜索(improved cuckoo search with multi-strategies,ICS-MS)算法。方法ICS-MS算法基于对标准布谷鸟搜索算法的寻优过程进行分析,通过建立马尔可夫模型,分析迭代过程,明确改进方向,降低自转移概率,减少平均理论迭代次数,进行一系列改进策略选择。首先,引入分阶段逐维更新策略,以减轻高维空间中的维度耦合效应,降低解空间的自转移概率;其次,在执行Lévy飞行操作后,依据个体适应度进行精英保留,并通过反向搜索操作扩展搜索域;最后,采用基于多策略的随机偏好游走算法,结合全局最优解的信息,引导种群向最优解方向进化。实验基于节点同构、节点感知范围与通信范围相同、节点实时感知假设,对WSN覆盖优化问题进行建模,并提出布谷鸟个体的构建方法。同时,以最大化WSN覆盖率为目标,实验采用点监测离散化方法,在节点数量20,30场景下,对ICS-MS算法与标准布谷鸟搜索(cuckoo search,CS)及其6种变体(MACS,DA-DOCS,WCSDE,ICS-ABC-OBL,CSDE,ICS)进行比较。结果结果表明,ICS-MS算法在节点数20时,相较于对比算法,覆盖率平均提升17.12%~17.35%;在节点数30时,覆盖率平均提升10.09%~18.05%。结论ICS-MS算法在WSN覆盖优化领域展现出更均匀的节点分布、更高的覆盖率和更快的收敛速率。 展开更多
关键词 无线传感器网络 马尔可夫链 布谷鸟搜索算法 逐维更新 反向搜索
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海上半潜油链式多节点传感器探测阵列研究 认领 引用
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作者 吴培良 王智伟 +2 位作者 孔德明 谢贝贝 崔永强 《电子测量与仪器学报》 EI CSCD 北大核心 2025年第11期33-41,共9页
半潜油是一种长期悬浮和游荡在海水中的溢油,现有探测方法难以获取相当范围内完整一段半潜油的浓度、油种、组分、分布与边界等基本必要信息,从而无法对海上半潜油溯源、追踪和预测等探测问题开展深入研究。为此,研究了一种由多个主、... 半潜油是一种长期悬浮和游荡在海水中的溢油,现有探测方法难以获取相当范围内完整一段半潜油的浓度、油种、组分、分布与边界等基本必要信息,从而无法对海上半潜油溯源、追踪和预测等探测问题开展深入研究。为此,研究了一种由多个主、辅节点相间组成的海上半潜油链式多节点传感器探测阵列。其中,主节点采用基于激光诱导时间分辨荧光光谱技术的水下探测装置以获取浓度、油种与组分等信息,辅节点则采用低成本的六电极电导率传感器以实现浓度、分布与边界测量。所述六电极传感器由6个按特定几何排列的环形电极构成,通过对多对电极间电压的测量获取局部电阻率数据,并据此构建电阻率——半潜油浓度的回归模型。最后,通过实验验证了该模型具有良好的泛化能力和较高的测量精度,其在校准和验证集中的决定系数分别0.95和0.96。该研究为大剖面、立体化探测海上半潜油提供了一种新的链式传感器阵列和浓度计算方法,很好地解决了探测半潜油所需的基本必要参数测量问题。 展开更多
关键词 溢油 半潜油 电阻率 六电极电导率传感器 链式多节点传感器探测阵列
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高职汽车类专业课程思政教学设计与实践——以“智能汽车传感器应用技术”为例 认领 引用 被引量：3
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作者 吴海东 《广东轻工职业技术大学学报》 2025年第6期61-67,72,共7页
针对高职课程思政建设中元素挖掘不足、融合度低等问题,以“智能汽车传感器应用技术”课程为载体,构建“一项目一思政主题,一任务一思政点,一活动一思政元素”三级课程思政体系。通过重构思政教学目标(家国情怀、工匠精神等四大核心素... 针对高职课程思政建设中元素挖掘不足、融合度低等问题,以“智能汽车传感器应用技术”课程为载体,构建“一项目一思政主题,一任务一思政点,一活动一思政元素”三级课程思政体系。通过重构思政教学目标(家国情怀、工匠精神等四大核心素养),创新“理虚实一体、产创研融合”教学模式,构建“四平台”(云教平台、虚拟仿真、实训平台、无人车产线)协同的“一课三练十步”混合式教学路径,并运用基于马尔科夫链模型的增值评价体系量化学生能力成长。实践表明该设计显著提升学生知识达成度与职业素养,输出课程思政教学指南,为工程类课程思政提供可复制范例。 展开更多
关键词 高职教育 三级课程思政体系 智能汽车传感器 马尔可夫链模型 增值评价
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基于邻域链的传感器网络数据异常检测方法 认领 引用 被引量：2
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作者 晁永兰 《自动化技术与应用》 2025年第5期61-65,共5页
传统对于传感器网络异常数据的检测主要采用核密度估计算法,易受到数据分布不均匀的影响,导致检测准确率较低等问题。为此,提出基于邻域链的传感器网络数据异常检测方法。根据数据采样值的波动范围,计算节点数据的置信度与置信区间,以... 传统对于传感器网络异常数据的检测主要采用核密度估计算法,易受到数据分布不均匀的影响,导致检测准确率较低等问题。为此,提出基于邻域链的传感器网络数据异常检测方法。根据数据采样值的波动范围,计算节点数据的置信度与置信区间,以此明确异常数据来源,利用邻域链算法计算两节点间数据的相似性,判断数据状态,通过对数据列表进行重构,分析数据在网格内部和边缘的分布规律,并将数据邻域距离与阈值比较,以输出数据异常值,由此实现数据异常检测。对比实验结果表明,所提方法能够较为准确地检测出传感器网络中的异常数据。 展开更多
关键词 邻域链算法 传感器网络 数据异常 检出率
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农田监测无线传感器网络节点部署策略 认领 引用
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作者 程晓玲 郭小春 严锡君 《微型电脑应用》 2025年第10期11-15,共5页
无线传感器网络的节点优化部署可提高网络的覆盖率、延长网络生命周期。针对农田监测,结合链型网络和星型网络的特点,提出一种多链型无线传感器网络节点优化部署策略。综合考虑链间干扰、网络连通性和节点能耗,得到节点最优间距、每条... 无线传感器网络的节点优化部署可提高网络的覆盖率、延长网络生命周期。针对农田监测,结合链型网络和星型网络的特点,提出一种多链型无线传感器网络节点优化部署策略。综合考虑链间干扰、网络连通性和节点能耗,得到节点最优间距、每条链的最优跳数以及圆形区域最优链数。MATLAB仿真说明,所提出部署方法能够有效地降低、均衡节点能耗、最大限度地延长网络的生命周期。 展开更多
关键词 无线传感器网络 节点部署 最优间距 最优链数 农田监测
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