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2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings最新文献

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Current around a crack in an aluminum plate under nondestructive evaluation inspection 无损检测中铝板裂纹周围的电流
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229379
A. Ribeiro, H. Ramos, D. Pasadas, Tiago Jorge Rocha
{"title":"Current around a crack in an aluminum plate under nondestructive evaluation inspection","authors":"A. Ribeiro, H. Ramos, D. Pasadas, Tiago Jorge Rocha","doi":"10.1109/I2MTC.2012.6229379","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229379","url":null,"abstract":"This paper presents an inversion problem algorithm applied in eddy current inspection using a sinusoidal magnetic field with fixed-amplitude, in a metallic plate sample with machined crack defects. The uniform magnetic field is obtained in a wide area around the probe due to the building technique of the excitation coil. The magnetic sensor in use is a giant magnetoresistance (GMR) with high sensibility. It measures the amplitude and phase of the magnetic field originated from eddy currents. A perturbation occurs in the measured magnetic field in the proximity of a crack defect. The current density is then determined around the crack defect through an inversion problem algorithm. The applied method consists in determining the transformation kernel and applying a Tikhonov regularization algorithm. With this data it is possible to obtain information about the defect geometrical characteristics.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124593640","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: 4
A Partial Discharges acquisition and statistical analysis software 局部放电采集与统计分析软件
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229187
J. Ardila-Rey, J. Martínez-Tarifa, G. Robles, M. Rojas-Moreno, R. Albarracín
{"title":"A Partial Discharges acquisition and statistical analysis software","authors":"J. Ardila-Rey, J. Martínez-Tarifa, G. Robles, M. Rojas-Moreno, R. Albarracín","doi":"10.1109/I2MTC.2012.6229187","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229187","url":null,"abstract":"Partial Discharges (PDs) are responsible for unexpected failures in power system equipment, so their measurement is a fundamental tool for electrical equipment maintenance. In order to characterize PDs activity, some statistical magnitudes are necessary. For this purpose, PDs acquisition and processing is an important tool for critical decisions related to power systems. In this paper, the main difficulties and challenges facing PDs detection, acquisition and processing are presented. Results will be compared to a commercial PDs detection system.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128655731","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: 9
Spectral analysis of wind profiler signal for environment monitoring 用于环境监测的风廓线信号频谱分析
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229573
P. Vergallo, A. Lay-Ekuakille
{"title":"Spectral analysis of wind profiler signal for environment monitoring","authors":"P. Vergallo, A. Lay-Ekuakille","doi":"10.1109/I2MTC.2012.6229573","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229573","url":null,"abstract":"It is already well-known that wind variability plays a key and crucial role in pollutant transportation and climate change. The impact of wind variability is not only on air but also on sea activities because it can cause turbulence and water warming. Hence, it is necessary to have specific and sophisticated instrumentation capable of monitoring local and wide range of wind. One of the most important instrumentation dedicated to wind monitoring is wind profiler that can work in coupled manner with a RASS (Radio Acoustic Sounding System). This paper presents a preliminary study to process signal from a wind profiler in order to detect echoes due to presence of obstacle along to emitted wave path. The scope is to discriminate echoes to obtain the true values of wind, thus, the correct wind profile.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129359083","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: 8
MPPT definition and validation: A new model-based approach MPPT的定义和验证:一种新的基于模型的方法
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229673
L. Cristaldi, M. Faifer, M. Rossi, S. Toscani
{"title":"MPPT definition and validation: A new model-based approach","authors":"L. Cristaldi, M. Faifer, M. Rossi, S. Toscani","doi":"10.1109/I2MTC.2012.6229673","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229673","url":null,"abstract":"Solar radiation is one of the most accessible renewable energy resources but its employment is strongly influenced by environmental and technological factors. In particular, the conversion process is strictly connected to the irradiance level and to the temperature of the photovoltaic module. Moreover it is well known that the conversion efficiency is quite low, about 15% for common installations. It is extremely important to know the behaviour of the module in order to estimate the efficiency of the solar plant in any condition and to predict the working point where maximum power is converted. This task is performed by the tracker of the Maximum Power Point (MPPT): it maximizes the power output of a PV system for assigned conditions of radiation and temperature, thus optimizing the efficiency. The core of the MPPT is represented by the implemented algorithm devoted to find and maintain the operation near to the Maximum Power Point (MPP). In the present paper, starting from the set of equations modelling a PV module, an innovative procedure to identify and reach the MPP is presented and experimentally verified.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129360012","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: 19
Wide dynamic range CMOS active pixel sensor using a stacked-photodiode structure 采用堆叠光电二极管结构的宽动态范围CMOS有源像素传感器
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229496
S. Jo, M. Bae, Jang-Kyoo Shin
{"title":"Wide dynamic range CMOS active pixel sensor using a stacked-photodiode structure","authors":"S. Jo, M. Bae, Jang-Kyoo Shin","doi":"10.1109/I2MTC.2012.6229496","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229496","url":null,"abstract":"In this paper, we propose a stacked-photodiode structure to extend the dynamic range of the CMOS active pixel sensor (APS). The proposed APS uses two photodiodes with different sensitivities and two additional MOSFETs in comparison with a conventional 3-transistor APS. Although the size of pixel is slightly larger than that of conventional 3-transistor APS, extension of the dynamic range is much easier than conventional methods by adjusting the reference voltage. The dynamic range of the proposed APS was greater than 103 dB. The designed circuit has been fabricated by using 0.35 μm 2-poly 4-metal standard CMOS technology and its characteristics have been evaluated.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129650701","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: 4
IronIC patch: A wearable device for the remote powering and connectivity of implantable systems 讽刺补丁:一种可穿戴设备，用于植入系统的远程供电和连接
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229168
J. Olivo, S. Carrara, G. Micheli
{"title":"IronIC patch: A wearable device for the remote powering and connectivity of implantable systems","authors":"J. Olivo, S. Carrara, G. Micheli","doi":"10.1109/I2MTC.2012.6229168","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229168","url":null,"abstract":"A wearable device to power implanted sensors by means of an inductive link is presented. The system, having size 69 × 40 mm2, is designed to be embedded into a skin patch and located over the implantation area. The system can transfer up to 15 mW within 6 mm in air. Tested with a 17 mm thick beef sirloin placed between the inductors, the device is able to deliver up to 1.17 mW. Downlink communication with the implanted sensors is performed at 100 kbps by using amplitude modulation. Uplink communication is performed at 66.6 kbps by using load modulation. Long range communication between the system and remote devices is enabled by a bluetooth module. The system is powered by two rechargeable lithium-ion polymer batteries and has an autonomy of 10 h in stand-by mode and about 1.5 h in transmitting mode.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129654631","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: 20
Self-mixing sensor for real-time measurement of harmonic and arbitrary displacements 用于实时测量谐波和任意位移的自混合传感器
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229702
U. Zabit, O. Bernal, T. Bosch
{"title":"Self-mixing sensor for real-time measurement of harmonic and arbitrary displacements","authors":"U. Zabit, O. Bernal, T. Bosch","doi":"10.1109/I2MTC.2012.6229702","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229702","url":null,"abstract":"A real-time self-mixing laser displacement sensor is presented that uses a fast consecutive-samples based unwrapping algorithm. The processing is achieved at a rate of 125KHz by an integrated micro-converter (ADuC7020) embedded on the SM sensor. Arbitrary and harmonic displacements have been measured in real-time with λ /10 precision as compared with the reference built-in capacitive feedback sensor of the target, where λ is the laser wavelength. The algorithm does not require any parameter estimation or huge memory and corrects possible false fringe detections. This results in a compact, integrated, precise and self-aligned laser sensor that costs less than 40 $.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127417676","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: 20
Ambulatory human upper limb joint motion monitoring 活动人体上肢关节运动监测
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229695
D. Álvarez, J. C. Álvarez, R. C. González, Antonio M. López
{"title":"Ambulatory human upper limb joint motion monitoring","authors":"D. Álvarez, J. C. Álvarez, R. C. González, Antonio M. López","doi":"10.1109/I2MTC.2012.6229695","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229695","url":null,"abstract":"In order to make an ergonomic analysis of laborer working conditions, we need to measure the different joint angles along the daily work. These angles will be used to define the requirements of each workstation. This information, together with the medical examination of each worker, is then used to determine whether a worker can develop a task, or if the task may have caused an occupational disease. Usual human motion capture systems are designed to work in laboratory controlled conditions. This paper presents a method of angular joint measurement, combining inertial sensors (accelerometers and gyroscopes) and magnetic sensors, which allows the ambulatory estimation of the 7 degrees of freedom of the upper limb, for a long time, without problems due to time integration of the signal.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127536635","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: 9
Comparison of methods of piezoelectric coefficient measurement 压电系数测量方法的比较
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229293
J. Fialka, P. Benes
{"title":"Comparison of methods of piezoelectric coefficient measurement","authors":"J. Fialka, P. Benes","doi":"10.1109/I2MTC.2012.6229293","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229293","url":null,"abstract":"The paper compares the main methods used for measuring of the piezoelectric material constants. It outlines the principle of three measuring methods most commonly used today, i.e. the frequency method, the laser interferometry method and the quasi-static method. These methods have been practically applied to piezoelectric ceramic samples. The paper describes the production of the piezoelectric ceramic samples of defined sizes in accordance with the current regulations. An NCE51 production code soft ceramic was used in the experiments. A piezoelectric charge coefficient was measured. The final values of the piezoelectric charge coefficient obtained through all the methods were compared to the catalogue values of the piezoelectric ceramic. All three methods can be described as appropriate; compared with the frequency method, the laser interferometry and quasi-static methods are rather time-consuming and more demanding with respect to preparation of the measurement experiment. The frequency method provides results within a smaller value range.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127246173","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: 23
Using a PET camera to track individual phases in process equipment with high temporal and spatial resolutions: Algorithm development 使用PET相机跟踪具有高时间和空间分辨率的工艺设备的各个阶段:算法开发
2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings Pub Date : 2012-05-13 DOI: 10.1109/I2MTC.2012.6229306
Yu-Fen Chang, T. C. Adamsen, A. Hoffmann
{"title":"Using a PET camera to track individual phases in process equipment with high temporal and spatial resolutions: Algorithm development","authors":"Yu-Fen Chang, T. C. Adamsen, A. Hoffmann","doi":"10.1109/I2MTC.2012.6229306","DOIUrl":"https://doi.org/10.1109/I2MTC.2012.6229306","url":null,"abstract":"This paper presents the development and characterization of a refined algorithm used in the positron emission particle tracking (PEPT) technique for locating a radioactive tracer particle, the property of which can be modified to simulate either a solid particle or a liquid element moving through the process equipment. The spatial resolution as a function of the temporal resolution down to temporal resolutions of 0.25 ms has been obtained for a moderately labelled bead, placed off the field-of-view center. Tracks of a bead, mimicking 90-115 μm sand particles, in a hydrocyclone with a temporal resolution of 0.5 ms are shown.","PeriodicalId":387839,"journal":{"name":"2012 IEEE International Instrumentation and Measurement Technology Conference Proceedings","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130159565","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
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