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Sensors, Volume 14, Issue 8

2014 August - 115 articles

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Articles (115)

  • Article
  • Open Access
44 Citations
11,611 Views
20 Pages

22 August 2014

In a wireless sensor network (WSN), saving power is a vital requirement. In this paper, a simple point-to-point bike WSN was considered. The data of bike parameters, speed and cadence, were monitored and transmitted via a wireless communication based...

  • Article
  • Open Access
42 Citations
9,703 Views
17 Pages

22 August 2014

The measurement of tea moisture content is important for processing and storing tea. The moisture content of tea affects the quality and durability of the product. Some electrical devices have been proposed to measure the moisture content of tea leav...

  • Article
  • Open Access
7 Citations
8,212 Views
29 Pages

Analytical Model of Large Data Transactions in CoAP Networks

  • Alessandro Ludovici,
  • Piergiuseppe Di Marco,
  • Anna Calveras and
  • Karl H. Johansson

22 August 2014

We propose a novel analytical model to study fragmentation methods in wireless sensor networks adopting the Constrained Application Protocol (CoAP) and the IEEE 802.15.4 standard for medium access control (MAC). The blockwise transfer technique propo...

  • Correction
  • Open Access
1 Citations
6,196 Views
2 Pages

22 August 2014

The authors wish to make the following correction to this paper [1]. Due to an error Figure 15 was a duplicate of Figure 13, the former Figure 15 (labelled here as Previous Figure 15) should be replaced by the new version shown below (labeled here...

  • Review
  • Open Access
277 Citations
21,772 Views
22 Pages

21 August 2014

The field of microfluidics has yet to develop practical devices that provide real clinical value. One of the main reasons for this is the difficulty in realizing low-cost, sensitive, reproducible, and portable analyte detection microfluidic systems....

  • Article
  • Open Access
11 Citations
7,950 Views
16 Pages

A High-Pressure Bi-Directional Cycloid Rotor Flowmeter

  • Shuo Liu,
  • Fan Ding,
  • Chuan Ding and
  • Zaipeng Man

21 August 2014

The measurement of the flow rate of various liquids and gases is critical in industrial automation. Rotary positive displacement meters (rotary PD meters) are highly accurate flowmeters that are widely employed in engineering applications, especially...

  • Article
  • Open Access
62 Citations
20,574 Views
29 Pages

Lab-on-Chip Cytometry Based on Magnetoresistive Sensors for Bacteria Detection in Milk

  • Ana C. Fernandes,
  • Carla M. Duarte,
  • Filipe A. Cardoso,
  • Ricardo Bexiga,
  • Susana Cardoso and
  • Paulo P. Freitas

21 August 2014

Flow cytometers have been optimized for use in portable platforms, where cell separation, identification and counting can be achieved in a compact and modular format. This feature can be combined with magnetic detection, where magnetoresistive sensor...

  • Article
  • Open Access
40 Citations
8,641 Views
28 Pages

Efficient Sensor Placement Optimization Using Gradient Descent and Probabilistic Coverage

  • Vahab Akbarzadeh,
  • Julien-Charles Lévesque,
  • Christian Gagné and
  • Marc Parizeau

21 August 2014

We are proposing an adaptation of the gradient descent method to optimize the position and orientation of sensors for the sensor placement problem. The novelty of the proposed method lies in the combination of gradient descent optimization with a rea...

  • Article
  • Open Access
6 Citations
7,267 Views
20 Pages

Application of Service Oriented Architecture for Sensors and Actuators in District Heating Substations

  • Jonas Gustafsson,
  • Rumen Kyusakov,
  • Henrik Mäkitaavola and
  • Jerker Delsing

21 August 2014

Hardwired sensor installations using proprietary protocols found in today’s district heating substations limit the potential usability of the sensors in and around the substations. If sensor resources can be shared and re-used in a variety of applica...

  • Article
  • Open Access
126 Citations
11,422 Views
23 Pages

20 August 2014

The quantification of aboveground biomass using remote sensing is critical for better understanding the role of forests in carbon sequestration and for informed sustainable management. Although remote sensing techniques have been proven useful in as...

  • Article
  • Open Access
83 Citations
13,939 Views
16 Pages

An Ultrasonic Contactless Sensor for Breathing Monitoring

  • Philippe Arlotto,
  • Michel Grimaldi,
  • Roomila Naeck and
  • Jean-Marc Ginoux

20 August 2014

The monitoring of human breathing activity during a long period has multiple fundamental applications in medicine. In breathing sleep disorders such as apnea, the diagnosis is based on events during which the person stops breathing for several period...

  • Article
  • Open Access
8 Citations
6,006 Views
13 Pages

20 August 2014

We present a novel direction based shortest path search algorithm to guide evacuees during an emergency. It uses opportunistic communications (oppcomms) with low-cost wearable mobile nodes that can exchange packets at close range of a few to some ten...

  • Article
  • Open Access
3 Citations
6,705 Views
15 Pages

20 August 2014

Cost-effective pharmaceutical drug discovery depends on increasing assay throughput while reducing reagent needs. To this end, we are developing an ultrasensitive, fluorescence-based platform that incorporates a nano/micro-fluidic chip with an array...

  • Article
  • Open Access
75 Citations
10,979 Views
19 Pages

20 August 2014

The emerging Global Navigation Satellite Systems (GNSS) including the BeiDou Navigation Satellite System (BDS) offer more visible satellites for positioning users. To employ those new satellites in a real-time kinematic (RTK) algorithm to enhance pos...

  • Article
  • Open Access
20 Citations
7,824 Views
24 Pages

Estimation of Spatial-Temporal Gait Parameters Using a Low-Cost Ultrasonic Motion Analysis System

  • Yongbin Qi,
  • Cheong Boon Soh,
  • Erry Gunawan,
  • Kay-Soon Low and
  • Rijil Thomas

20 August 2014

In this paper, a low-cost motion analysis system using a wireless ultrasonic sensor network is proposed and investigated. A methodology has been developed to extract spatial-temporal gait parameters including stride length, stride duration, stride ve...

  • Article
  • Open Access
13 Citations
7,983 Views
21 Pages

19 August 2014

More and more Global Navigation Satellite Systems (GNSSs) have been developed and are in operation. Before integrating information on various GNSSs, the differences between the various systems must be studied first. This research focuses on analyzing...

  • Article
  • Open Access
17 Citations
8,320 Views
24 Pages

Focal-Plane Sensing-Processing: A Power-Efficient Approach for the Implementation of Privacy-Aware Networked Visual Sensors

  • Jorge Fernández-Berni,
  • Ricardo Carmona-Galán,
  • Rocío Del Río,
  • Richard Kleihorst,
  • Wilfried Philips and
  • Ángel Rodríguez-Vázquez

19 August 2014

The capture, processing and distribution of visual information is one of the major challenges for the paradigm of the Internet of Things. Privacy emerges as a fundamental barrier to overcome. The idea of networked image sensors pervasively collecting...

  • Article
  • Open Access
162 Citations
15,195 Views
17 Pages

19 August 2014

The fabrication of an electrochemical sensor based on an iron oxide/graphene modified glassy carbon electrode (Fe3O4/rGO/GCE) and its simultaneous detection of dopamine (DA) and ascorbic acid (AA) is described here. The Fe3O4/rGO nanocomposite was sy...

  • Article
  • Open Access
4 Citations
7,321 Views
18 Pages

Optimization of a Cell Counting Algorithm for Mobile Point-of-Care Testing Platforms

  • DaeHan Ahn,
  • Nam Sung Kim,
  • SangJun Moon,
  • Taejoon Park and
  • Sang Hyuk Son

19 August 2014

In a point-of-care (POC) setting, it is critically important to reliably count the number of specific cells in a blood sample. Software-based cell counting, which is far faster than manual counting, while much cheaper than hardware-based counting, ha...

  • Article
  • Open Access
43 Citations
6,548 Views
20 Pages

19 August 2014

Underwater sensor networks (UWSNs) can be applied in sea resource reconnaissance, pollution monitoring and assistant navigation, etc., and have become a hot research field in wireless sensor networks. In open and complicated underwater environments,...

  • Editorial
  • Open Access
6 Citations
9,415 Views
22 Pages

19 August 2014

The aim of this special issue was to provide a comprehensive view on the state-of-the-art sensor technology in Spain. Different problems cause the appearance and development of new sensor technologies and vice versa, the emergence of new sensors fa...

  • Article
  • Open Access
85 Citations
9,519 Views
21 Pages

19 August 2014

An important objective in weed management is the discrimination between grasses (monocots) and broad-leaved weeds (dicots), because these two weed groups can be appropriately controlled by specific herbicides. In fact, efficiency is higher if selecti...

  • Article
  • Open Access
22 Citations
8,831 Views
23 Pages

19 August 2014

Preceding vehicle detection and tracking at nighttime are challenging problems due to the disturbance of other extraneous illuminant sources coexisting with the vehicle lights. To improve the detection accuracy and robustness of vehicle detection, a...

  • Article
  • Open Access
32 Citations
8,370 Views
29 Pages

Stability Analysis for a Multi-Camera Photogrammetric System

  • Ayman Habib,
  • Ivan Detchev and
  • Eunju Kwak

18 August 2014

Consumer-grade digital cameras suffer from geometrical instability that may cause problems when used in photogrammetric applications. This paper provides a comprehensive review of this issue of interior orientation parameter variation over time, it e...

  • Article
  • Open Access
6 Citations
8,863 Views
29 Pages

18 August 2014

In launching operations, Rocket Tracking Systems (RTS) process the trajectory data obtained by radar sensors. In order to improve functionality and maintenance, radars can be upgraded by replacing antennas with parabolic reflectors (PRs) with phased...

  • Article
  • Open Access
34 Citations
7,957 Views
21 Pages

18 August 2014

Emergency navigation systems for buildings and other built environments, such as sport arenas or shopping centres, typically rely on simple sensor networks to detect emergencies and, then, provide automatic signs to direct the evacuees. The major dra...

  • Article
  • Open Access
35 Citations
8,451 Views
19 Pages

18 August 2014

Traffic patterns in wireless sensor networks (WSNs) usually follow a many-to-one model. Sensor nodes close to static sinks will deplete their limited energy more rapidly than other sensors, since they will have more data to forward during multihop tr...

  • Article
  • Open Access
26 Citations
10,243 Views
26 Pages

An Intelligent Space for Mobile Robot Localization Using a Multi-Camera System

  • Mariana Rampinelli,
  • Vitor Buback Covre,
  • Felippe Mendonça De Queiroz,
  • Raquel Frizera Vassallo,
  • Teodiano Freire Bastos-Filho and
  • Manuel Mazo

15 August 2014

This paper describes an intelligent space, whose objective is to localize and control robots or robotic wheelchairs to help people. Such an intelligent space has 11 cameras distributed in two laboratories and a corridor. The cameras are fixed in the...

  • Article
  • Open Access
16 Citations
8,082 Views
17 Pages

Wave Dispersion and Attenuation on Human Femur Tissue

  • Maria Strantza,
  • Olivia Louis,
  • Demosthenes Polyzos,
  • Frans Boulpaep,
  • Danny Van Hemelrijck and
  • Dimitrios G. Aggelis

15 August 2014

Cortical bone is a highly heterogeneous material at the microscale and has one of the most complex structures among materials. Application of elastic wave techniques to this material is thus very challenging. In such media the initial excitation ener...

  • Article
  • Open Access
48 Citations
8,131 Views
16 Pages

Design of a Device for Sky Light Polarization Measurements

  • Yujie Wang,
  • Xiaoping Hu,
  • Junxiang Lian,
  • Lilian Zhang,
  • Zhiwen Xian and
  • Tao Ma

14 August 2014

ky polarization patterns can be used both as indicators of atmospheric turbidity and as a sun compass for navigation. The objective of this study is to improve the precision of sky light polarization measurements by optimal design of the device used....

  • Article
  • Open Access
10 Citations
7,473 Views
39 Pages

A Holistic Approach to ZigBee Performance Enhancement for Home Automation Networks

  • August Betzler,
  • Carles Gomez,
  • Ilker Demirkol and
  • Josep Paradells

14 August 2014

Wireless home automation networks are gaining importance for smart homes. In this ambit, ZigBee networks play an important role. The ZigBee specification defines a default set of protocol stack parameters and mechanisms that is further refined by the...

  • Article
  • Open Access
37 Citations
9,136 Views
23 Pages

14 August 2014

Global Navigation Satellite Systems (GNSS) are now recognized as cost-effective tools for ionospheric studies by providing the global coverage through worldwide networks of GNSS stations. While GNSS networks continue to expand to improve the observab...

  • Article
  • Open Access
42 Citations
8,276 Views
15 Pages

Automated In-Situ Laser Scanner for Monitoring Forest Leaf Area Index

  • Darius S. Culvenor,
  • Glenn J. Newnham,
  • Andrew Mellor,
  • Neil C. Sims and
  • Andrew Haywood

14 August 2014

An automated laser rangefinding instrument was developed to characterize overstorey and understorey vegetation dynamics over time. Design criteria were based on information needs within the statewide forest monitoring program in Victoria, Australia....

  • Article
  • Open Access
18 Citations
9,512 Views
13 Pages

Enclosed Electronic System for Force Measurements in Knee Implants

  • David Forchelet,
  • Matteo Simoncini,
  • Arash Arami,
  • Arnaud Bertsch,
  • Eric Meurville,
  • Kamiar Aminian,
  • Peter Ryser and
  • Philippe Renaud

14 August 2014

Total knee arthroplasty is a widely performed surgical technique. Soft tissue force balancing during the operation relies strongly on the experience of the surgeon in equilibrating tension in the collateral ligaments. Little information on the forces...

  • Article
  • Open Access
60 Citations
7,900 Views
17 Pages

14 August 2014

This paper investigates fault detection of a roller bearing system using a wavelet denoising scheme and proper orthogonal value (POV) of an intrinsic mode function (IMF) covariance matrix. The IMF of the bearing vibration signal is obtained through e...

  • Article
  • Open Access
91 Citations
11,312 Views
20 Pages

13 August 2014

Internet of Things is a ubiquitous concept where physical objects are connected over the internet and are provided with unique identifiers to enable their self-identification to other devices and the ability to continuously generate data and transmit...

  • Article
  • Open Access
55 Citations
19,119 Views
33 Pages

Acoustic Devices for Particle and Cell Manipulation and Sensing

  • Yongqiang Qiu,
  • Han Wang,
  • Christine E. M. Demore,
  • David A. Hughes,
  • Peter Glynne-Jones,
  • Sylvia Gebhardt,
  • Aleksandrs Bolhovitins,
  • Romans Poltarjonoks,
  • Kees Weijer and
  • Sandy Cochran
  • + 2 authors

13 August 2014

An emerging demand for the precise manipulation of cells and particles for applications in cell biology and analytical chemistry has driven rapid development of ultrasonic manipulation technology. Compared to the other manipulation technologies, such...

  • Article
  • Open Access
11 Citations
9,606 Views
19 Pages

13 August 2014

A RF powering circuit used in radio-frequency identification (RFID) tags and other batteryless embedded devices is presented in this paper. The RF powering circuit harvests energy from electromagnetic waves and converts the RF energy to a stable volt...

  • Article
  • Open Access
10 Citations
11,137 Views
15 Pages

Implantable Impedance Plethysmography

  • Michael Theodor,
  • Dominic Ruh,
  • Martin Ocker,
  • Dominik Spether,
  • Katharina Förster,
  • Claudia Heilmann,
  • Friedhelm Beyersdorf,
  • Yiannos Manoli,
  • Hans Zappe and
  • Andreas Seifert

13 August 2014

We demonstrate by theory, as well as by ex vivo and in vivo measurements that impedance plethysmography, applied extravascularly directly on large arteries, is a viable method for monitoring various cardiovascular parameters, such as blood pressure,...

  • Article
  • Open Access
6 Citations
5,743 Views
12 Pages

Liquid Seal for Temperature Sensing with Fiber-Optic Refractometers

  • Ben Xu,
  • Jianqing Li,
  • Yi Li,
  • Jianglei Xie and
  • Xinyong Dong

13 August 2014

Liquid sealing is an effective method to convert a fiber-optic refractometer into a simple and highly sensitive temperature sensor. A refractometer based on the thin-core fiber modal interferometer is sealed in a capillary tube filled with Cargille o...

  • Article
  • Open Access
51 Citations
11,940 Views
31 Pages

13 August 2014

We propose calibration methods for microelectromechanical system (MEMS) 3D accelerometers and gyroscopes that are efficient in terms of time and computational complexity. The calibration process for both sensors is simple, does not require additional...

  • Article
  • Open Access
23 Citations
9,978 Views
18 Pages

Development of a PET Scanner for Simultaneously Imaging Small Animals with MRI and PET

  • Christopher J Thompson,
  • Andrew L Goertzen,
  • Jonathan D Thiessen,
  • Daryl Bishop,
  • Greg Stortz,
  • Piotr Kozlowski,
  • Fabrice Retière,
  • Xuezhu Zhang and
  • Vesna Sossi

12 August 2014

Recently, positron emission tomography (PET) is playing an increasingly important role in the diagnosis and staging of cancer. Combined PET and X-ray computed tomography (PET-CT) scanners are now the modality of choice in cancer treatment planning. M...

  • Article
  • Open Access
71 Citations
11,305 Views
14 Pages

12 August 2014

A monoclonal antibody for microcystin–leucine–arginine (MC-LR) was produced by cell fusion. The immunogen was synthesized in two steps. First, ovalbumin/ bovine serum albumin was conjugated with 6-acetylthiohexanoic acid using a carbodiimide EDC (1-...

  • Article
  • Open Access
20 Citations
6,351 Views
14 Pages

12 August 2014

This paper presents a novel method for direct detection of Plasmodium falciparum histidine rich protein-2 (PfHRP-2) antigen using carbon nanofiber (CNF) forests grown on glass microballoons (NMBs). Secondary antibodies specific to PfHRP-2 densely att...

  • Article
  • Open Access
3 Citations
7,490 Views
12 Pages

12 August 2014

This paper presents novel minimally-invasive, catheter-based acoustic interrogation device for monitoring motility dynamics of the lower esophageal sphincter (LES). A micro-oscillator actively emitting sound wave at 16 kHz is located at one side of t...

  • Article
  • Open Access
4 Citations
7,211 Views
20 Pages

A Wireless Portable High Temperature Data Monitor for Tunnel Ovens

  • Ricardo Mayo Bayón,
  • Víctor M. González Suárez,
  • Felipe Mateos Martín,
  • Juan M. Lopera Ronda and
  • Juan C. Álvarez Antón

12 August 2014

Tunnel ovens are widely used in the food industry to produce biscuits and pastries. In order to obtain a high quality product, it is very important to control the heat transferred to each piece of dough during baking. This paper proposes an innovativ...

  • Article
  • Open Access
103 Citations
12,435 Views
12 Pages

Flexible Capacitive Electrodes for Minimizing Motion Artifacts in Ambulatory Electrocardiograms

  • Jeong Su Lee,
  • Jeong Heo,
  • Won Kyu Lee,
  • Yong Gyu Lim,
  • Youn Ho Kim and
  • Kwang Suk Park

12 August 2014

This study proposes the use of flexible capacitive electrodes for reducing motion artifacts in a wearable electrocardiogram (ECG) device. The capacitive electrodes have conductive foam on their surface, a shield, an optimal input bias resistor, and g...

  • Article
  • Open Access
17 Citations
5,687 Views
21 Pages

12 August 2014

Clock synchronization is a very important issue for the applications of wireless sensor networks. The sensors need to keep a strict clock so that users can know exactly what happens in the monitoring area at the same time. This paper proposes a novel...

  • Article
  • Open Access
12 Citations
8,914 Views
21 Pages

Active In-Database Processing to Support Ambient Assisted Living Systems

  • Wagner O. De Morais,
  • Jens Lundström and
  • Nicholas Wickström

12 August 2014

As an alternative to the existing software architectures that underpin the development of smart homes and ambient assisted living (AAL) systems, this work presents a database-centric architecture that takes advantage of active databases and in-databa...

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Sensors - ISSN 1424-8220