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# IEEE Transactions on Instrumentation and Measurement

### Early Access Articles

Early Access articles are made available in advance of the final electronic or print versions. Early Access articles are peer reviewed but may not be fully edited. They are fully citable from the moment they appear in IEEE Xplore.

## Filter Results

Displaying Results 1 - 25 of 96
• ### Deep Learning-Based Inversion Method for Imaging Problems in Electrical Capacitance Tomography

Publication Year: 2018, Page(s):1 - 12
| | PDF (2860 KB)

Electrical capacitance tomography exhibits great potentials in the visualization measurement of industrial processes, and high-precision images are of great significance for the reliability and usefulness of measurement results. In this paper, we propose a deep learning-based inversion method to ameliorate the reconstruction accuracy. With the aid of the deep learning methodology, the prior from t... View full abstract»

• ### Development of a Real-Time Software-Defined GPS Receiver in a LabVIEW-Based Instrumentation Environment

Publication Year: 2018, Page(s):1 - 15
| | PDF (3970 KB)

The ubiquitousness of location-based services has proven effective for many applications such as commercial, military, and emergency responders. Software-defined radio (SDR) has emerged as an adequate framework for the development and testing of global navigational satellite systems such as the global position system (GPS). SDR receivers are constantly developing in terms of acceleration factors a... View full abstract»

• ### Calibration of a Photometer for Quantification of Ethanol in Gasoline: Absorbance Determination

Publication Year: 2018, Page(s):1 - 10
| | PDF (1561 KB)

This paper presents a study about the multivariate calibration of a LED near-infrared photometer applied to the quantification of ethanol in gasoline. Based on the analysis of works of other authors, we implemented seven different methods for determination of absorbances from the raw optical data, which were used for calibration of the prototype. The methods either use different experimental condi... View full abstract»

• ### Magnetic Shielding of Rogowski Coils

Publication Year: 2018, Page(s):1 - 7
| | PDF (2559 KB)

This paper describes the impact of Rogowski coil (RC) construction imperfections on measurement errors. A procedure is shown for detecting RC non-homogeneity using a rotary dipole magnetic field inducing a current inside an RC. The influence of RC magnetic shielding on reducing spurious fields is described. View full abstract»

• ### EMD and Spectrum-Centrobaric-Correction-Based Analysis of Vortex Street Characteristics in Mist Annular Flow of Wet Gas

Publication Year: 2018, Page(s):1 - 11
| | PDF (2518 KB)

To improve the accuracy of vortex flowmeter in mist annular flow of wet gas, the characteristics of two-phase vortex street were investigated and the influence of discrete droplets on the meter over-reading was analyzed. For calibrating experiments, a mist annular flow loop was developed where the discrete droplets smaller than 50 micrometer were generated by high-pressure microsprayer nozzles. Th... View full abstract»

• ### Analysis of a Linearizing Direct Digitizer With Phase-Error Compensation for TMR Angular Position Sensor

Publication Year: 2018, Page(s):1 - 9
| | PDF (2925 KB)

This paper proposes an efficient linearizing direct digitizer for tunneling magnetoresistance (TMR)-based angular position sensor. The proposed linearizing digitizer for TMR angle sensors (LDTA) converts sine and cosine natured analog outputs from the TMR sensor into a digital output that varies linearly over 360° range. The digitization is done without using any analog-to-digital converter... View full abstract»

• ### An Optical Fiber Fabry-Perot Microphone Based on Corrugated Silver Diaphragm

Publication Year: 2018, Page(s):1 - 7
| | PDF (3657 KB)

A corrugated silver diaphragm-based optical fiber microphone (OFM), formed by extrinsic Fabry-Perot interferometric structure, was proposed. The sensor's sensitivity was improved by releasing diaphragm's initial stress with the help of corrugations. A simple gray-scale exposure' method was proposed to fabricate the corrugation. Experimental results indicated that the mechanical sensitivity of th... View full abstract»

• ### Detecting Defects in Photovoltaic Panels With the Help of Synchronized Thermography

Publication Year: 2018, Page(s):1 - 9
| | PDF (5761 KB)

This paper investigates defects in photovoltaic (PV) panels, more precisely, the location of defects in PV panels. With the help of electrical verification, it is possible to verify the impact of defects on output performances. However, it is not possible to determine the location of defects in order to address the origin of problems, for example, in the manufacturing process of PV panels. In this... View full abstract»

• ### Online Estimation of the Electrochemical Impedance Spectrum and Remaining Useful Life of Lithium-Ion Batteries

Publication Year: 2018, Page(s):1 - 14
| | PDF (2204 KB)

An electrochemical impedance spectrum (EIS) is considered to be one of the key indicators to monitor the health status of lithium-ion batteries. Experimental procedures to measure the EIS of a battery are offline and require manual intervention. So, in order to monitor the state of health of a battery in real time, online methods for EIS estimation would be very useful. This paper presents an appr... View full abstract»

• ### Design and Development of a Modular, Multichannel Photoplethysmography System

Publication Year: 2018, Page(s):1 - 12
| | PDF (2291 KB)

In this paper, we present the design, development, and validation of a modular photoplethysmography (PPG) system called ZenPPG. This portable, dual-channel system has the capability to produce `raw' PPG signals at two different wavelengths using commercial and/or custom-made PPG sensors. The system consists of five modules, each consisting of circuitry required to perform specific tasks, and are... View full abstract»

• ### Parallel-Series Multiobjective Genetic Algorithm for Optimal Tests Selection With Multiple Constraints

Publication Year: 2018, Page(s):1 - 18
| | PDF (5308 KB)

It is known that optimal tests selection is an important issue in design for testability field. The selection is subjected to constraints of testability metrics. At the same time, test time and economic costs need to be minimized. The tests selection is a combinatorial multiobjective optimization problem. According to the schema theory, the more the amount of testability constraints, the more the ... View full abstract»

• ### Cyclostationary Phase Analysis on Micro-Doppler Parameters for Radar-Based Small UAVs Detection

Publication Year: 2018, Page(s):1 - 10
| | PDF (1702 KB)

Robust radar detection for small unmanned aerial vehicles (UAVs) is a challenging problem, as UAVs tend to fly at slow speed and low altitude, with a small radar cross section. Those properties may lead to difficulties in separating echoes from a significant clutter response. In this case, micro-Doppler (m-D) effect induced by the rotation of the rotor blades would be another preferable signature ... View full abstract»

• ### Distributed Estimation of Power System Oscillation Modes Under Attacks on GPS Clocks

Publication Year: 2018, Page(s):1 - 12
| | PDF (2240 KB)

Phasor measurement units (PMUs) are playing an increasingly important role in wide-area monitoring and the control of power systems. PMUs allow synchronous real-time measurements of voltage, phase angle, and frequency from multiple remote locations in the grid, enabled by their ability to align to global positioning system (GPS) clocks. Given that this ability is vulnerable to GPS spoofing attacks... View full abstract»

• ### Telemetric Technique for Passive Resistive Sensors Based on Impedance Real Part Measurement at Fixed Frequency

Publication Year: 2018, Page(s):1 - 9
| | PDF (2617 KB)

This paper proposes a measurement technique for telemetric systems working with passive resistive sensors from the kilohm order. It permits calculating sensor output through analytical formulas, from system parameters and the real part of system impedance measured at readout inductor's terminals. Impedance measurement is performed always at a fixed frequency, when inductors are at a fixed relative... View full abstract»

• ### Ultrasound Transmission Spectral Compensation Using Arbitrary Position and Width Pulse Sets

Publication Year: 2018, Page(s):1 - 8
| | PDF (2278 KB)

Ultrasonic testing systems are widely used for the analysis and characterization of materials. In many applications, such as ultrasonic imaging and spectroscopy, wide bandwidth, spectral flatness, and signal-to-noise ratio (SNR) are essential. The transfer function of the ultrasonic transducer is the bandwidth limiting factor. Pulse excitation has limitations in spectral coverage and achievable SN... View full abstract»

• ### Noncontact AC Voltage Measurements: Error and Noise Analysis

Publication Year: 2018, Page(s):1 - 8
| | PDF (1536 KB)

A capacitive noncontact ac voltage measurement technique and its feasibility to measure arbitrary waveform signals are analyzed. The method provides self-calibration of the scale factor, an important feature considering the high variability that coupling capacitances present. The analysis of several errors related to the technique is performed, showing the impact of different design parameters on ... View full abstract»

• ### Data-Driven Quality Assessment of Noisy Nonlinear Sensor and Measurement Systems

Publication Year: 2018, Page(s):1 - 11
| | PDF (1386 KB)

This paper considers the problem of determining and comparing the quality of nonlinear sensor systems concerning a measurement task in a data-driven way. Due to various noise sources and nonlinear characteristics, physical sensor and measurement systems, in general, exhibit an intractable random input-to-output behavior. In practice, this makes it impossible to describe the exact stochastic system... View full abstract»

• ### Flexible 3x3 Mueller Matrix Endoscope Prototype for Cancer Detection

Publication Year: 2018, Page(s):1 - 13
| | PDF (4627 KB)

In this paper, we research and design a flexible head-modulated polarization endoscope system prototype for early cancer detection in vivo. The new idea of our design is the implementation of the distal tip of the endoscope structure, that is, the distal tip has integrated the polarization state generator (PSG) and polarization state analyzer (PSA), the illumination fiber, and image capture device... View full abstract»

• ### Measurement System for Attitude of Anterior Pelvic Plane and Implantation of Prothesis in THR Surgery

Publication Year: 2018, Page(s):1 - 9
| | PDF (1961 KB)

With the average age of population increasing in the world, the number of total hip replacement (THR) surgeries increases year by year. However, the failure rate of THR surgeries is up to 10% following primary surgery and 28% after revision arthroplasty, which has direct correlation to the implantation angles between prosthesis and pelvis. To improve the implanting accuracy of the pr... View full abstract»

• ### Accurate Estimation of the Environmental Noise Through Sampling Approach: Selection of the Measurement Time

Publication Year: 2018, Page(s):1 - 8
| | PDF (1476 KB)

The influence of measurement time on the measurement uncertainty of environmental noise is explored when the sampling approach is performed as opposite to the continuous acquisition. An original procedure based on a bootstrap method was proposed to determine the measurement episode, which takes into account the statistical variability of the acquired sound pressure levels and may be effectively ap... View full abstract»

• ### Fast-TFM--Multifrequency Phasor Measurement for Distribution Networks

Publication Year: 2018, Page(s):1 - 11
| | PDF (2098 KB)

To effectively manage the growing number of distributed energy resources, more extensive monitoring is needed at distribution network levels, where a challenging combination of constraints and cost-effectiveness requirements must be taken into account. In this paper, we consider the idea of combining accurate phasor measurement with the capability to analyze harmonic and interharmonic phasors. Thi... View full abstract»

• ### Enhancing Localization Accuracy of MEMS-INS/GPS/In-Vehicle Sensors Integration During GPS Outages

Publication Year: 2018, Page(s):1 - 13
| | PDF (2744 KB)

In this paper, we propose a novel localization methodology to enhance the accuracy from two aspects, i.e., adapting to the uncertain noise of microelectromechanical system-based inertial navigation system (MEMS-INS) and accurately predicting INS errors. First, an interacting multiple model (IMM)-based sequential two-stage Kalman filter is proposed to fuse the information of MEMS-INS, global positi... View full abstract»

• ### Synchro-Measurement Application Development Framework: An IEEE Standard C37.118.2-2011 Supported MATLAB Library

Publication Year: 2018, Page(s):1 - 11
| | PDF (2215 KB)

Electrical power system monitoring, protection, operation, and control schemes are undergoing significant changes toward the next generation fully automated, resilient, and self-healing grids. At present, there still exists a lack of available user-friendly tools for the synchronized measurement technology supported application design. This paper presents a synchro-measurement application developm... View full abstract»

• ### All 3-D Printed Free-Space Setup for Microwave Dielectric Characterization of Materials

Publication Year: 2018, Page(s):1 - 10
| | PDF (2419 KB)

In this paper, the development of an all 3-D printed wide band (2-18 GHz) free-space measurement system for characterizing the complex dielectric properties of flexible as well as rigid materials was demonstrated. Each part of the setup was designed and simulated precisely to show the effect of the 3-D printed quasi-optical lenses placed in front of the wide band ridged horn antennas on the beam a... View full abstract»

• ### Analysis and Experiment of Self-Differential Eddy Current Displacement Sensor for AMBs Used in Molecular Pump

Publication Year: 2018, Page(s):1 - 10
| | PDF (2769 KB)

With the wide application of the high-speed electrical machine with the active magnetic bearings (AMBs), improving the dynamic response and the resolution of the displacement sensor for AMBs becomes an actual challenge for industrial development. This paper proposes a self-differential eddy current displacement sensor (ECDS) for radial AMBs system. The phase advance network method was utilized to ... View full abstract»

## Aims & Scope

Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications.

Full Aims & Scope

Editor-in-Chief