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High-temperature measurements are of significant importance in various harsh-environment engineering fields, such as fossil fuel production, and the metallurgical and aviation industries. In recent years, there is a steady trend to shift from conventional electronic sensors to optical fiber sensors for high-temperature applications. In particular, optical fiber sensors are small in size, immune to

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Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

Presents the table of contents for this issue of the publication.

Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

The IEEE International Workshop on Applied Measurements for Power Systems (AMPS) is the main event promoted by TC-39 of the Instrumentation and Measurement Society (Measurements in Power Systems). The 2019 edition is particularly significant because it is the tenth of a series that began in 2010 in Aachen, Germany. For this reason, after two years, it was decided to come back home and celebrate the

In this article, a noninvasive remote monitoring method of error of electricity energy meter (EM) is introduced and its achievable precision is investigated. The aim of the method is to determine remotely the smart EM active power relative measurement error using the reference EM connected at the input of a low-voltage distribution grid segment. The meter error estimation is carried out despite other

Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

The classification of wood types plays an important role in many fields, especially in construction industry and furniture manufacturing. In order to manufacture rubber wood furniture with highly uniform color and texture, wood boards of different colors and textures should be classified elaborately. Many traditional methods have been applied in wood classification relying on extracting features using

An omnidirectional vision system consisting of a fisheye camera and structured light projector has its own distinctive advantages toward other vision systems. A vision system provides a wide range of information by one single capture. Moreover, the laser feature is easy to detect and extract from the given image for further analysis. In order to obtain the reliable results, the vision system must be

Despite claims that finger-vein biometrics can detect aliveness, recent research has shown that current systems can be fooled by forged vein patterns printed on a distinctive paper, raising considerable security concerns regarding the identification authenticity of these systems. Additionally, finger-vein identification exhibits low accuracy rates in real-world applications due to the inferior image

Electrical capacitance tomography (ECT) has been developed for imaging permittivity distribution of two-phase flows in a pipe or vessel with high temporal resolution. The spatial resolution of ECT is relatively low due to its soft-field, ill-posed, and ill-conditioned nature. So far, there is no comprehensive analysis of the spatial resolution of ECT for complex two-phase flows. To assess the merits

Electrostatic tomography (EST) has been widely used in gas–solid two-phase flows to measure particle velocity in many industrial processes. However, EST is a passive measurement technique, and this results in rare independent measurements compared with other tomographic modalities. In this article, an electrostatic direct velocity tomography (EDVT) method is proposed to increase the number of independent

Human–computer interface (HCI) systems are extending their boundaries in our daily life and becoming an important subject in biomedical engineering. Electrooculogram (EOG) signal as an input for such systems stems from the corneoretinal standing potential, which can be used for monitoring human eye rotation. Higher amplitude, better signal-to-noise ratio, and much easier recording conditions compared

Capacitors are widely used in electronic systems and have a key function in electromagnetic compatibility (EMC) compliance. However, the aging of capacitors results in an alteration of their parameters, which could pose a threat on the normal operation of systems as well as their EMC compliance. Normally, accelerated aging is employed to shorten the experiment time. After the aging, the capacitance

Toward establishing a measurement system for small masses and forces based on the new definition of the kilogram, a measurement apparatus that uses the voltage balance method was developed. The main components of the apparatus are a mass balance mechanism, an automatic mass translation system, and a capacitance actuator for balancing the gravity force acting on the small object and the electrostatic

We report on a novel and general measurement technique to characterize the finesse of optical resonators. The method retrieves the cavity transmission profile coefficient by using an amplitude modulation of the probe beam and a synchronous detection scheme. Both the real and imaginary parts of the transmission profile can be accurately measured. Validation of the method is performed using two different

For 3-D measurement of nonuniform reflective objects, it is necessary to ensure measurement accuracy, reduce the number of additional images, and improve measurement efficiency. To satisfy these requirements, we first present a pixel matching method for projected and captured images. Second, we obtain the optimal projected image from two additional images. Finally, we propose a method to estimate reasonable

A study on the design, framework, experimental arrangement, data acquisition, and subsequent analysis of cold crack detection using fiber Bragg grating (FBG) sensors during welding is presented. Cold crack induced acoustic emission (AE) events are detected by multiple FBG sensor configurations and using a commercial FBG AE interrogation system. The crack locations are theoretically predicted using

In this article, a new testing method for the diagnosis of winding faults based on the resonant frequency of the transformer is proposed. The system that consists of the high-voltage dc power and high-voltage insulated gate bipolar transistor (IGBT) could charge the transformer periodically. The response measured from the bushing of the winding is the oscillating wave that can be used for evaluating

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Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication.

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Artificial intelligence-based machinery fault diagnosis techniques have been increasingly considered in many industrial fields. The convolutional neural network (CNN) is able to learn features from raw signals because of its filter structure. Thus, several studies have applied CNN-based methods for machinery fault recognition and classification. However, most of these studies are based on a balanced

In this article, permittivity measurement based on open resonator technology is reviewed, and then, the hemispherical open resonator with an enlarged aperture on the curved mirror is proposed for high-frequency applications. A numerical compensate method based on frequency deviation is first proposed in detail for permittivity correction. To verify our idea, an open resonator is designed and fabricated

This article discusses a new approach to size an analog-to-digital converter (ADC) for the simultaneous acquisition of two signals. It allows evaluating the resolution, which fulfills a certain dynamic range (DR) in the case of multiple signals with different powers. Experimental results with software-defined radios (SDRs) confirm our simulations. It shows that we are able to acquire an intra-quantum

A novel closed-loop switched-capacitor (SC) capacitance-to-frequency converter (CFC) is presented in this article. The proposed CFC is capable of measuring from either a single-element or a differential capacitive sensor (DCS), providing ratio and ratiometric outputs, respectively. Most of the existing autobalancing schemes for capacitive sensors use the closed-loop approach but require precise sinusoidal

The unscented Kalman filter (UKF) provides a powerful tool for power system forecasting-aided state estimation (FASE). However, when the power systems are affected by the abnormal operating situations, i.e., the non-Gaussian communication noises, sudden loads or state changes, and instrument failures, the original UKF based on the minimum mean square error (MMSE) criterion may suffer from performance

This article deals with the parameters’ measurement of interarea oscillations, which are low-frequency damped oscillations that affect the high-voltage transmission lines when an unbalance between the power demand and the generated power occurs. The authors propose a method that processes the samples provided by the phasor measurement unit (PMU) and performs the online estimation of the parameters

Prosthetic sockets and the related suspension systems play key roles in functional restoration for individuals with limb loss; a good fit of the socket-suspension systems (SSSs) is critical to avoid unexpected skin breakdown. However, maintaining a good fit between the limb and SSS is challenging due to daily volume changes in the residual limb. In clinical practice, the fit of the SSS is monitored

This communication proposes a two-port multiple-input–multiple-output (MIMO) antenna fabricated on a small size colored resin plastic button where full dielectric properties of the button substrate are evaluated before designing the MIMO antenna. The antenna uses partial ground plane and two coaxial feeds for the excitation of two semicircular shaped patch elements. A very simple copper ring around

A novel position sensor for pneumatic and hydraulic cylinder applications is presented in this article. The solid iron core conical in shape surrounded by axisymmetric coils is an essential part of the proposed position sensor. The axisymmetric coils are used for excitation and voltage measurements. The conical solid iron core is annealed to homogenize the magnetic properties and to increase the permeability

Accurate registration of 2-D imagery with point clouds is a key technology for image-Light Detection and Ranging (LiDAR) point cloud fusion, camera to laser scanner calibration, and camera localization. Despite continuous improvements, automatic registration of 2-D and 3-D data without using additional textured information still faces great challenges. In this article, we propose a new 2-D–3-D registration

Data-driven methods have shown its great latent capacity in the field of industrial process monitoring. However, the existing methods usually achieve good results under the assumption that the offline learning data and the online monitoring data are drawn from the same distribution. Unfortunately, in the industrial system, the assumption is often violated due to the harsh operating environment. Especially

This article demonstrates the use of five different methods to estimate partial discharge (PD) location in an oil insulation system from noisy measurements. The measurements are obtained from three ultrasonic sensors located in three different places. The sensors map the PD location utilizing a nonlinear model. The estimation techniques used in this article are the extended Kalman filter (EKF), the

Power losses in electric distribution systems are categorized into technical losses (TL) and nontechnical losses (NTL). TL refer to the heat losses in the distribution system components. NTL, however, refer to losses that come in different shapes and forms, such as tampering with smart meters, attacking the data transmitted from smart meters, malfunctioning of smart meters, and tapping service cables

Railway turnouts require high-performance condition monitoring to prevent disastrous railway accidents. In industrial practice, turnouts’ monitoring is usually done by railway workers who visually inspect the operating current curves. This results in huge labor costs and prone to human mistakes. Thus, automating the process of turnouts’ monitoring via fault-detection algorithms is imperative. The available

The work reported in this article aims at developing a simple sensor-based system that detects and identifies faults of a train. Four different trains are considered for analysis as suggested by the Northeast Frontier Railway (NFR) authorities. For this purpose, an embedded system containing an ADXL335 sensor is used to capture the vibration of a railway track during the movement of a train over the

Vision-based measurement and prediction (VMP) are the very important and challenging part for autonomous robotic manipulation, especially in dynamic and uncertain scenarios. However, due to the potential limitations of visual measurement in such an environment such as occlusion, lighting, and hardware limitations, it is not easy to acquire the accurate positions of an object as the observations. Moreover

The wavelength modulation spectroscopy (WMS) method is typically used in the tunable diode laser absorption spectroscopy (TDLAS) for spectrum extraction in a noisy background. Usually, two entire absorption spectra for target species are scanned in a cascade way in the WMS method, and it limits the temporal response of the TDLAS sensor. In this article, the frequency-division multiplexing and main

Fabrication and experimental validation of a newly developed copper oxide nanoparticles (CuO-NPs) and silver nanoparticles (AgNPs) immobilized SM-MM-SM-MM-SM (SMSMS) in-line Mach–Zehnder interferometer (MZI) fiber structure-based sensor using localized surface plasmon resonance (LSPR) technique are reported in this article. The AgNPs and CuO-NPs are used to improve the biocompatibility and sensitivity

This article addresses the analysis and design of a high-resolution and temperature-insensitive inclination sensor using fiber Bragg grating (FBG). The sensor uses a pendulum-based structure with FBG attached to its cantilever arm. Initially, strain analysis of the proposed inclination sensor is carried out using the finite-element method (FEM) to optimize the structure and materials for its fabrication

Precise measurement of temperature is vital in a variety of industries and basic sciences. Numerous techniques have been proposed for temperature measurement, such as fiber Bragg gratings and Fabry–Perot interferometers. Despite several important accomplishments, such optical thermometers are still limited in their performances. Two major limitations are the low operational temperature and the paradox

This article considers the problem of extracting periodic envelope features from observation signals modulated by subcritically damped mechanical systems. Due to insufficient envelope structure descriptions, popular two-stage blind deconvolution techniques incur a significant performance degradation in envelope feature deconvolution tasks. Leveraging sparse learning framework, a nonnegative bounded

Tracking moving objects is a relevant topic in a wide range of research activities. To meet this goal, sensor fusion is a frequently used approach that is able to exploit the synergies from different sensors, achieving high precision and accuracy. In this article, an application of this technique is presented for an actual industrial scenario, namely, the shield metal arc welding (SMAW) process. A

This article presents an automated procedure for acquisition and analysis of BallistoCardioGraphy (BCG) traces. A triaxial accelerometer and a microcontroller unit are used to record heart-induced recoil forces generated from a lying subject. The problem of BCG J-peak annotation is split into two subtasks: candidates extraction, based on a detection signal, and actual annotation, guided by subject-specific

River turbidity, serving as an important evaluation index for monitoring water contamination and guiding pollution control, is mainly measured based on the data gathered from contacting turbidity sensors or contactless space satellites. Nevertheless, the prevalence of those abovementioned two measurements is strongly limited due to the disadvantages of low-density spatial distribution of sensor data

The first step to quantifying complex defects is knowing its geometry, shape, and orientation. This is evidently challenging in electromagnetic nondestructive testing (ENDT), especially for subsurface complex defect detection, in cases where no information about defect or material is known or given. In this article, we propose a heuristic approach for the visualization, verification, and validation

With the ever-increasing demand for location-based services in the indoor environments, Wi-Fi-based positioning technology has attracted much attention in decades of years because of its ubiquitous deployment and low cost. There is the fact that Wi-Fi signal not only changes with the distance away from the target, but also changes with time. To improve positioning accuracy and robustness, we consider

With the estimation of Kalman filtering states on oblique projection spaces, the subspace identification (SID) provides an effective data-driven method in handling input noises by transforming them into process noises. However, the estimation of system matrices under the least-squares framework would lead to a biased identification. Therefore, an expectation-maximization (EM) SID (EMSID) algorithm

An ultrasonic heading measurement method, working under magnetic interference prohibitive for magnetometers, was prototyped, validated, and metrologically characterized. Two capacitive ultrasonic transducers convert the mechanical rotation in two correspondingly time-delayed electrical sine waves. Then, the time delay is estimated using the standard tree parameter sine-fitting algorithm. The prototyped

Excessive vibrations in motor operation can be a cause of premature failure in many industrial applications; therefore, effective solutions to accurately measure vibrations are required. A common approach to measure vibrations is through the motor current signature analysis, as torque oscillations produce characteristic frequency components in the current spectrum; this approach is suitable for those

This article presents a newly developed flexible laminated copper (FLC) coil for electromagnetic thermotherapy that has several advantages over traditional hard copper coils. We study the effect of pitch (the distance between coil turns) on the heating performance of the proposed FLC coil. The flexible coil can be wound into different shapes for various purposes. However, the output power of the heating

Two independent methods of absolute power measurement of electromagnetic waves are compared in the millimeter-wave range. At the National Metrology Institutes (NMIs), dependent on frequency and wave propagation, electromagnetic power is differently traced back to the International System of Units (SI), i.e., from microwave up to millimeter-wave frequencies in coaxial lines and metallic waveguides and