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# IEEE Sensors Journal

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Displaying Results 1 - 25 of 38
• ### [Front cover]

Publication Year: 2011, Page(s): C1
| PDF (220 KB)
• ### IEEE Sensors Journal publication information

Publication Year: 2011, Page(s): C2
| PDF (36 KB)
• ### Table of contents

Publication Year: 2011, Page(s):1305 - 1306
| PDF (48 KB)
• ### A Numerical Study on the Viscous Damping Effect for a Condenser Microphone

Publication Year: 2011, Page(s):1307 - 1316
Cited by:  Papers (2)
| | PDF (710 KB) | HTML

Exposing a condenser microphone to incident pressure causes a nonuniform diaphragm deflection and a nonlinear relationship with the induced voltage. This paper describes how the second order finite difference method is implemented to solve governing equations including diaphragm motion, Reynolds and Laplace equations to determine more accurately this nonlinearity and moreover, to determine the inf... View full abstract»

• ### Impact of Electronic Conditioning on the Noise Performance of a Two-Port Network Giant MagnetoImpedance Magnetometer

Publication Year: 2011, Page(s):1317 - 1324
Cited by:  Papers (14)
| | PDF (1339 KB) | HTML

The performance of giant magneto-impedance (GMI)-based magnetometers is currently limited by the noise due to the electronic conditioning circuitry. We propose a simple model of this noise for a GMI sensor using a synchronous detection scheme. The GMI sensing element consists of a thin pick-up coil wound around a Co-rich amorphous micro-wire. It is fully described by a two port network model and a... View full abstract»

• ### Investigation of Trace Cobalt in Glass Beads From an Archaeological Tomb

Publication Year: 2011, Page(s):1325 - 1328
| | PDF (515 KB) | HTML

To investigate ancient glass fragments, voltammetric analysis of trace cobalt (Co) was conducted using modified carbon nanotube sensors in cyclic voltammetry (CV), square wave (SW) stripping voltammetry, and chronoamperometry modes. Optimum SW conditions were obtained at working ranges of 40-460 ug/l Co (8 points), and a standard deviation of 0.2881% ( n=15) was observed at 20.0 ug/l Co ion at 100... View full abstract»

• ### Online Measurement of Structural Deformations in Composites

Publication Year: 2011, Page(s):1329 - 1336
Cited by:  Papers (10)
| | PDF (951 KB) | HTML

This paper describes a new approach of Nondestructive Evaluation (NDE) using fibrous sensors inserted inside composite reinforcements during their weaving. A flexible piezoresistive fibrous sensor has been developed and optimized for in situ structural deformation sensing in carbon composites. The sensor was inserted, in the weft direction, in three-dimensional warp interlock reinforcement during ... View full abstract»

• ### A Least Squares Approach to Buried Object Detection Using Ground Penetrating Radar

Publication Year: 2011, Page(s):1337 - 1341
Cited by:  Papers (3)
| | PDF (372 KB) | HTML

In this study, we utilize the least squares formulation to solve the real-time buried object detection problem. Least squares estimation is used to estimate the next ground penetrating radar (GPR) signal from previous samples, where there is no underground object. If the measured GPR signal is considerably different than the estimated signal, presence of an underground object is concluded. In orde... View full abstract»

• ### Multispectral Classification With Bias-Tunable Quantum Dots-in-a-Well Focal Plane Arrays

Publication Year: 2011, Page(s):1342 - 1351
Cited by:  Papers (10)
| | PDF (1828 KB) | HTML

Mid-wave and long-wave infrared (IR) quantum-dots-in-a-well (DWELL) focal plane arrays (FPAs) are promising technology for multispectral (MS) imaging and sensing. The DWELL structure design provides the detector with a unique property that allows the spectral response of the detector to be continuously, albeit coarsely, tuned with the applied bias. In this paper, a MS classification capability of ... View full abstract»

• ### Room-Temperature Chemiresistive Effect of ${rm TiO}_{2}!-!{rm B}$ Nanowires to Nitroaromatic and Nitroamine Explosives

Publication Year: 2011, Page(s):1352 - 1358
Cited by:  Papers (13)  |  Patents (1)
| | PDF (1542 KB) | HTML

Semiconducting TiO2-B nanowires were synthesized and their chemical sensor performance was studied. It was found that the TiO2-B nanowires exhibited a large and reversible change in electrical resistivity when exposed to trace vapor of nitroaromatic and nitroamine explosives. The sensor showed high sensitivity and fast response at room temperature. The chemiresistive effect w... View full abstract»

• ### Use of a Low-Cost CMOS Detector and Cross-Polarization Signal Isolation for Oxygen Sensing

Publication Year: 2011, Page(s):1359 - 1360
Cited by:  Papers (6)  |  Patents (1)
| | PDF (230 KB) | HTML

A portable, low-cost optical oxygen sensor based on quenching of PtOEP emission is described. A CMOS image sensor was used as detector, while cross-polarization was used for signal isolation. At high oxygen concentrations, emission of PtOEP was quenched leading to changes in the red channel of the CMOS sensor, while the green and blue channels exhibited little signal change. Sensitivity of the int... View full abstract»

• ### Analytical Modeling for the Bending Resonant Frequency of Sensors Based on Micro and Nanoresonators With Complex Structural Geometry

Publication Year: 2011, Page(s):1361 - 1374
Cited by:  Papers (11)
| | PDF (1761 KB) | HTML

Micro- and nanoresonator sensors have important applications such as in chemical and biological sensing, environmental control, monitoring of viscosity and magnetic fields, and inertial forces detection. However, most of these resonators are designed as complex structures that complicate the estimation of their resonant frequencies (generally of the bending or torsional mode). In this paper, we pr... View full abstract»

• ### CMOS Active-Pixel Sensor With In-Situ Memory for Ultrahigh-Speed Imaging

Publication Year: 2011, Page(s):1375 - 1379
Cited by:  Papers (7)
| | PDF (792 KB) | HTML

State-of-the-art image sensor arrays have not been able to operate at frame rates that exceed tens to hundreds of thousands of frames per second. The main bottle neck preventing imaging at higher frame rates is the time required to access the array, convert the image data from analog to digital, and transmit the data off the image sensor chip. The later is considered the most significant source of... View full abstract»

• ### A Low-Cost Picosecond Laser Module for Time-Resolved Optical Sensing Applications

Publication Year: 2011, Page(s):1380 - 1381
| | PDF (69 KB) | HTML

A low-cost and low-power laser driver capable of delivering picosecond optical pulses is presented. Pulsewidth in the 150-350 ps range and pulse energies between 2 and 12 pJ with a maximum repetition frequency of 160 MHz were obtained from several laser diodes with different wavelengths and power ratings. The laser driver can be used in combination with integrated single-photon detectors in time-r... View full abstract»

• ### Wireless Sensor Networks for Conservation and Monitoring Cultural Assets

Publication Year: 2011, Page(s):1382 - 1389
Cited by:  Papers (25)
| | PDF (1787 KB) | HTML

Recently, technology has become more attractive for industry by paving the way to new applications, which go well beyond traditional sensor applications. These applications can be classified in different categories: monitoring, alerting, healthcare assistance, and actuating, among others. A Wireless Sensor Network (WSN) is feasible for the heritage scenarios protection and for monitoring because i... View full abstract»

• ### Detection of Fiber Fuse Effect Using FBG Sensors

Publication Year: 2011, Page(s):1390 - 1394
Cited by:  Papers (14)  |  Patents (1)
| | PDF (645 KB) | HTML

In this paper, we propose a new technique to detect the presence of the fiber fuse effect propagation. The implemented technique consists on the utilization of two fiber Bragg gratings (FBGs) as temperature sensors in order to detect the transit of the thermal wave associated with the fuse effect. The developed technique was used to determine the fuse propagation velocity in single mode fibers as ... View full abstract»

• ### Ethanol Gas Sensing of Mn-Doped CoFe$_{2}$O $_{4}$ Nanoparticles

Publication Year: 2011, Page(s):1395 - 1402
Cited by:  Papers (12)
| | PDF (1615 KB) | HTML

Undoped and Mn-doped cobalt ferrite (CoFe2O4) nanoparticles were synthesized and characterized for thermal conductivity and magnetic properties. Room temperature ferromagnetism and an increase in saturation magnetization due to Mn doping (65.4 emu/g for 3 at.% of Mn and 20.8 emu/g for undoped CoFe2O4 nanoparticles) are observed. The ethanol gas sensitivi... View full abstract»

• ### Current-Only Directional Overcurrent Relay

Publication Year: 2011, Page(s):1403 - 1404
Cited by:  Papers (18)
| | PDF (163 KB) | HTML

Overcurrent relays are widely used for protection of power systems, directional ones for transmission side, and nondirectional ones for distribution side. The fault direction may be forward (between relay and grid), or reverse (between relay and source), the normal power flow being from source to the grid. Known directional overcurrent relays rely on a reference voltage phasor for estimating the d... View full abstract»

• ### Sizing PZT Transducers in Impedance-Based Structural Health Monitoring

Publication Year: 2011, Page(s):1405 - 1414
Cited by:  Papers (11)
| | PDF (1189 KB) | HTML

A theoretical and experimental analysis regarding the correct size of PZT (Lead Zirconate Titanate) transducers used in structural health monitoring (SHM) systems based on the electromechanical impedance (EMI) technique is presented. Tests were carried out on aluminum structures using 5A and 5H PZT patches of various sizes. The results show that the sensitivity of SHM systems for damage detection ... View full abstract»

• ### Vibration Characteristics of Various Surfaces Using an LDV for Long-Range Voice Acquisition

Publication Year: 2011, Page(s):1415 - 1422
Cited by:  Papers (3)
| | PDF (991 KB) | HTML

Laser Doppler vibrometers (LDVs) as non-contact vibration sensors have an ability of remote voice acquisition. With the assistance of a visual sensor (camera), various targets in the environment, where an audio event takes place, can be selected as reflecting surfaces for collecting acoustic signals by an LDV. The performance of the LDV greatly depends on the vibration characteristics of the selec... View full abstract»

• ### Ultra Sensitive Fiber-Optic Hydrogen Sensor Based on High Order Cladding Mode

Publication Year: 2011, Page(s):1423 - 1426
Cited by:  Papers (14)
| | PDF (741 KB) | HTML

We demonstrate a simple but sensitive hydrogen gas sensor composed of a palladium-coated long-period fiber grating (LPG). By writing an LPG in a low core index fiber, high-order cladding modes are excited. As the palladium thin layer absorbs hydrogen, the effective refractive indexes of the cladding modes are affected, thus the resonant wavelengths of the LPG are changed with a high sensitivity. W... View full abstract»

• ### Neural Compensation for a Microcontroller Based Frequency Synthesizer-Vector Voltmeter

Publication Year: 2011, Page(s):1427 - 1428
Cited by:  Papers (3)
| | PDF (175 KB) | HTML

An automated neural network compensation scheme is proposed for an indigenously developed microcontroller based frequency synthesizer-vector voltmeter system, developed using direct digital synthesis and the synchronous detection technique. This compensator, when implemented online, can significantly improve the reading of an unknown voltage (both in magnitude and phase), in real-time. The neural ... View full abstract»

• ### A Flexible Data and Sensor Planning Service for Virtual Sensors Based on Web Service

Publication Year: 2011, Page(s):1429 - 1439
Cited by:  Papers (16)
| | PDF (2575 KB) | HTML

How to achieve a flexible data and sensor planning service to schedule, plan, and empower diverse sensors and heterogeneous data ordering systems is a big challenge. In this paper, a service-oriented framework of data and sensor planning service for virtual sensors is proposed. The framework includes an Open Geospatial Consortium (OGC)-compliant Sensor Planning Service (SPS), a Web Notification Se... View full abstract»

• ### Novel Planar Electromagnetic Sensors for Detection of Nitrates and Contamination in Natural Water Sources

Publication Year: 2011, Page(s):1440 - 1447
Cited by:  Papers (23)
| | PDF (1148 KB) | HTML

This paper introduces novel sensors based on the combination of planar meander and interdigital electromagnetic sensors for monitoring the level of contamination in water sources. A series of experiments was conducted to determine the sensors characteristics. Two nitrates forms, namely sodium nitrates and ammonium nitrates, were mixed in several different ratios dissolved in 1 L of distilled water... View full abstract»

• ### Radar Sensor Wireless Channel Modeling in Foliage Environment: UWB Versus Narrowband

Publication Year: 2011, Page(s):1448 - 1457
Cited by:  Papers (43)
| | PDF (1246 KB) | HTML

In this paper, we study the radar sensor wireless channel modeling in foliage environment, a rich scattering and time-varying environment, based on extensive data collected using ultra-wideband (UWB) and narrowband (200 and 400 MHz) radar sensors. We apply two approaches to the wireless channel modeling: Saleh and Valenzuela (S-V) method for UWB channel modeling and CLEAN method for narrowband and... View full abstract»

## Aims & Scope

The IEEE Sensors Journal is a peer-reviewed, semi-monthly online journal devoted to sensors and sensing phenomena.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Krikor Ozanyan
University of Manchester
Manchester, M13 9PL, U.K.