2019 IEEE SENSORS最新文献_第2页

Pulsed Eddy Current Response to Liftoff in Different Sizes of Concrete Embedded Rebar 脉冲涡流对不同尺寸混凝土预埋钢筋升力的响应

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956833

I. Eddy, P. R. Underhill, J. Morelli, T. Krause

{"title":"Pulsed Eddy Current Response to Liftoff in Different Sizes of Concrete Embedded Rebar","authors":"I. Eddy, P. R. Underhill, J. Morelli, T. Krause","doi":"10.1109/SENSORS43011.2019.8956833","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956833","url":null,"abstract":"Corrosion of carbon steel rebar in concrete structures, such as highways, bridges, and buildings have a direct impact on their structural integrity, since the rebar provides the tensile strength within the structure. Rebar strength depends on the remaining effective cross-section of a given rod. Presence of water and migration of corrosive elements, such as chloride, may result in rebar corrosion with subsequent loss of overall structural strength. In order to adequately quantify the cross-section of the ferromagnetic rod, it is necessary that the transient response is strong enough to be detected. In addition, rebar used in different applications will be placed at different depths from the outermost concrete wall. Examination of long-time decay, on five rebar samples of diameters ranging from 19 mm (0.75 in) to 57 mm (2.25 in), in the transient response of Pulsed Eddy Current (PEC) was examined as a potential method to quantify a maximum liftoff-to-size relationship. The transient response of a coaxial solenoidal drive-receive coil pair, oriented parallel to the rebar axis, was analyzed over a range of liftoffs (distance within the concrete) up to 150 mm. At times greater than ~30 ms, a single exponential decay constant appeared as a constant slope, independent of liftoff in a semi-log plot. The intercept of the linear long-time decay, in semi-log space, decreased exponentially with liftoff, and maintained a viable window for analysis up to 85 mm, 110 mm, 125 mm, 138 mm and 141 mm distances for rebar diameters of 18 mm (0.75 in), 25 mm (1 in), 38 mm (1.5 in), 51 mm (2 in) and 57 mm (2.25 in), respectively. Stated data demonstrate a power law dependence on rebar radius of limits on signal analysis due to liftoff. This report shows the potential for PEC analysis to quantify the cross-sectional area of rebar in concrete structures up to size-dependent threshold depths.","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78033785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Enabling Road Condition Monitoring with an on-board Vehicle Sensor Setup 通过车载传感器设置实现道路状况监测

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956699

Felix Kortmann, Henning Peitzmeier, Nicolas Meier, Jens Heger, P. Drews

引用次数: 9

Tactile Sensor on Cane Handle for Gait Phase Analysis 手杖柄触觉传感器步态相位分析

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956868

Arturo de Guzmán-Manzano, Andrés Trujillo-León, Raúl Lora-Rivera, F. Vidal-Verdú

引用次数: 1

Theoretical and Experimental Study of z-axis Acceleration Detection of the Micro Thermal Convective Accelerometer 微热对流加速度计z轴加速度检测的理论与实验研究

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956737

Xiaoyi Wang, W. Xu, Huahuang Luo, Xu Zhao, Yi-Kuen Lee

{"title":"Theoretical and Experimental Study of z-axis Acceleration Detection of the Micro Thermal Convective Accelerometer","authors":"Xiaoyi Wang, W. Xu, Huahuang Luo, Xu Zhao, Yi-Kuen Lee","doi":"10.1109/SENSORS43011.2019.8956737","DOIUrl":"https://doi.org/10.1109/SENSORS43011.2019.8956737","url":null,"abstract":"For the first time, we conduct theoretical and experimental analysis on the z-axis (out-of-plane direction) acceleration detection of the micro thermal convective accelerometer (MTCA). Instead of using the complex assembling method to make an out-of-plane detection structure, an indirect way to measure the z-axis acceleration is proposed. The mechanism is proposed with the evidence that the sum of the upstream and downstream detectors’ temperature keeps the same under in-plane acceleration, while their differential output keeps constant with the out-of-plane (z-axis) acceleration. By means of monitoring the variation of temperature of in-plane detectors under out-of-plane acceleration, the z-axis acceleration could be indirectly sensed. Theoretically, the coupling error on z-axis induced by x-axis is quite small (less than 1%). Through this method, it could be easy to convert a single-axis (X) MTCA to a two-axis (X-Z) MTCA, which is also promising to improve the two-axis (X-Y) MTCA to a tri-axis (X-Y-Z) accelerometer. In addition, an MTCA is fabricated based on a CMOS compatible fabrication method and demonstrate the proposed detection mechanism with high sensitivity for both x-axis (1211μV/g) and z-axis (402μV/g).","PeriodicalId":6710,"journal":{"name":"2019 IEEE SENSORS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79401201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Audio classification systems using deep neural networks and an event-driven auditory sensor 使用深度神经网络和事件驱动听觉传感器的音频分类系统

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956592

Enea Ceolini, I. Kiselev, Shih-Chii Liu

引用次数: 3

Driver Head Posture Monitoring using MEMS Magnetometer and Neural Network for Long-distance Driving Fatigue Analysis 基于MEMS磁强计和神经网络的驾驶员头部姿态监测与疲劳分析

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956799

Hobeom Han, Hyeongkyu Jang, S. Yoon

引用次数: 8

A flexible, three material, 3D-printed, shear force sensor for use on finger tips 一个灵活的，三种材料，3d打印，剪切力传感器，用于指尖

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956757

G. Wolterink, R. Sanders, G. Krijnen

引用次数: 9

Paper-based isothermal DNA amplification and real-time analysis 基于纸张的等温DNA扩增和实时分析

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956819

Mingdian Liu, H. Monshat, Yuxin Zhao, Meng Lu

引用次数: 1

Liquid operating TPoS MEMS resonators with high quality factor 具有高品质因数的液体操作TPoS MEMS谐振器

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956591

C. Je, Hyunjoong Lee, Yil-Suk Yang

引用次数: 0

A novel Doppler based speed measurement technique for individual free-ranging fish 一种新的基于多普勒的自由放养鱼个体速度测量技术

2019 IEEE SENSORS Pub Date : 2019-10-01 DOI: 10.1109/SENSORS43011.2019.8956870

Waseem Hassan, M. Føre, M. O. Pedersen, J. A. Alfredsen

引用次数: 3