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IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222)

18-21 May 1998

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  • Imtc/98 [front matter]

    Publication Year: 1998, Page(s):i - xxiv
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    Freely Available from IEEE
  • Author's index

    Publication Year: 1998, Page(s):xxix - xxxv
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    Freely Available from IEEE
  • Automobile crusher gauge

    Publication Year: 1998, Page(s):973 - 976 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The paper presents a new kind of wireless dynamic parameter measurement system which records the automobile colliding process called an automobile crusher gauge (ACG). In a collision process, the ACG can be housed in any place. For example, inside the head, rib cage and the legs of the anthropomorphic dummies in order to study the automobile's structure and determine the component's response to va... View full abstract»

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  • Highly sensitive humidity sensor for dielectric measurement (water absorption) in glass-fiber resins

    Publication Year: 1998, Page(s):1037 - 1040 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    The humidity sensor using the sensitive capacitive-dependent crystal is described. Presented is the probe sensitivity (dependence of df on the dCx). In addition, the new idea of excitation of the entire humidity sensor with stochastic test signals is described, and the humidity surface-measuring method is given. It includes the influence of test signals on the weighting function uncertainty and on... View full abstract»

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  • A capacitive finger-type angular-position and angular-speed sensor

    Publication Year: 1998, Page(s):967 - 972 vol.2
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    A robust capacitive finger-type angular-position and angular-speed sensor for automotive and metrology applications is presented. The main advantages of this low-cost system are easy mounting and replacement, its simplicity, speed and high resolution (±0.02°) over the absolute measurement range of 180°, compact sensor outlines, and insensitivity to dirt or condensation. The paper de... View full abstract»

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  • Characterization of a magnetic field sensor based on torque measuring

    Publication Year: 1998, Page(s):1033 - 1036 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    A sensor for low frequency measurements of the magnetic field is presented in the paper. It is based on the measurements of an electromagnetic torque. An output directly proportional to the unknown magnetic field is produced, the method has the main advantage of avoiding the drifts present in the integration of signals from inductive sensors. The design and construction criteria, aiming at an unce... View full abstract»

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  • Measurement of diameters of wires using laser and optical fiber

    Publication Year: 1998, Page(s):961 - 965 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    A simple technique is described to measure diameters of thin as well as thick wires using laser, optical fiber and microprocessor. A wire, whose diameter to be measured, is moved across the laser beam between laser and optical fiber. This changes the output of the photodetector for a finite time duration which is determined using a microprocessor. The product of the time duration and the velocity ... View full abstract»

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  • A new multi-functional tactile sensing technique for simultaneous discrimination of material properties

    Publication Year: 1998, Page(s):1029 - 1032 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    For simultaneous discrimination of material properties, a new multi-functional tactile sensing technique for one tactile sensor which can obtain three tactile information, that is, contact force, temperature change and contact number per one tactile sensor in spite of mono-sensing device is proposed here. To the confirm proposed sensing technique, a pressure-conductive rubber tactile sensor with t... View full abstract»

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  • Using rational filters for digital correction of a spectrometric micro-transducer

    Publication Year: 1998, Page(s):1302 - 1306 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    The raw spectrometric data are subject to systematic errors of an instrumental type that may be reduced provided a mathematical model of the spectrometer, or its pseudoinverse, i.e. an operator of reconstruction is identified. The idea of identifying this operator, directly during calibration of the spectrometer, is developed in this paper. The applicability of an operator of reconstruction, havin... View full abstract»

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  • Optic fiber sensor of light intensity based on luminescent dye doped plastics

    Publication Year: 1998, Page(s):957 - 960 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    The feasibility and the multiple applications of fiber optic based sensors have been proved in the past. These applications relay on their low weight, high resistance to corrosion and fatigue, immunity to electromagnetic interference, the compatibility with a wide range of materials as well as the low probability to cause fire or explosion. Along with this upcoming fiber optic technology the prese... View full abstract»

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  • Wavelets and power system transient analysis

    Publication Year: 1998, Page(s):1331 - 1334 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    In order to improve electric power quality, the source and causes of transient faults must be known before appropriate action can be taken. However, in order to determine the causes and sources of transient faults, one must have the capability to detect and localize those faults and further identify the types of fault. The purpose of this paper is to introduce to the instrumentation and measuremen... View full abstract»

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  • ADC characterization by an eigenvalues method

    Publication Year: 1998, Page(s):1198 - 1202 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    A new method called the eigenvalue method, is introduced in this paper. Here the eigenvalues of the sampling data matrix, directly derived from the sampled input data, are used to characterize the signal-to-noise ratio (SNR), and further to estimate the number of effective bits. Various input signals, such as single-tone, dual-tone, or multi-tone can be used to obtain accurate estimation results. ... View full abstract»

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  • Detecting knee hyperextension using goniometric inclinometer sensing with vibrotactile feedback

    Publication Year: 1998, Page(s):863 - 867 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    The purpose of this gait analysis study was to further research the electrogoniometric vibrotactile feedback methods that aid in patient gait therapy. As compared to the standard electrogoniometer used in patient therapy a lighter, more comfortable device was designed and analyzed to provide the patient with specific hyperextension information about his/her gait cycle during stance phase. The setu... View full abstract»

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  • Accurate detection algorithm of battery full-capacity under fast-charge

    Publication Year: 1998, Page(s):755 - 759 vol.2
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    The expanding number of battery portable products has widely increase the use of sealed NiCd/NiMH batteries. Battery fast-charge (in less than one hour) is very useful but, in fast-charge, cell pressure and temperature increase quickly during overcharging (after the battery reaches full-charge). Usual fast-charge end methods do not avoid the overcharge or they require complex calculation processes... View full abstract»

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  • Tunable centre frequency resonator based bandpass Σ-Δ modulators

    Publication Year: 1998, Page(s):1248 - 1252 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    This paper presents a methodology for the design of oversampled narrow-band single-loop and multi-stage resonator-based bandpass Σ-Δ modulators that can accommodate different passband centre to sampling frequency ratios. These tunable bandpass configurations are designed by analytically determining the required compensation hardware to deliver good resolution. Thorough simulations demo... View full abstract»

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  • Experiments on particulate emission monitoring by means of scintillation

    Publication Year: 1998, Page(s):1089 - 1092 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Scintillation method is a new way for particulate concentration monitoring. In this paper a relationship between scintillation and particulate concentration is proposed and verified through experiments. Test result shows a linear response to particulate concentrations. A simulation stack is described which was used for particulate concentration measuring experiment View full abstract»

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  • Measuring active power, voltage and current using slow A/D converters

    Publication Year: 1998, Page(s):732 - 737 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    A new design of a digital measurement system based on the use of very slow highly precise and cheap A/D converters (dual slope) is described in this paper. Measurements of voltage and current are performed more than once in a period, so the measured value is reconstructed after n periods. Measurements performed on the electric utilities in Yugoslavia indicate that the voltage waveform remains unch... View full abstract»

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  • The performance test of a piecewise-linear A/D converter

    Publication Year: 1998, Page(s):1223 - 1228 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    In this paper test procedures to characterize the behaviour of a piecewise linear analog-to-digital converter (PLADC) are investigated. The PLADC is a new special converter, where the transfer characteristic is a programmable piece-wise linear line, suitable for smart sensor applications. New tests have been developed, because the converter nonlinear characteristic precludes the straight applicati... View full abstract»

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  • Neural networks-based approach to the acquisition of acceleration from noisy velocity signal

    Publication Year: 1998, Page(s):935 - 940 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    In this paper, we propose a neural networks-based approach to acquire the angular acceleration from a noisy velocity signal. Our scheme consists of two cascaded neural networks: Neural Network I and II. Neural Network I attenuates the measurement noise from the velocity signal. Neural Network II further reduces the residual noise level, and calculates the final angular acceleration estimate. As an... View full abstract»

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  • Modelling and identification of differential pressure cells

    Publication Year: 1998, Page(s):1023 - 1028 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    This paper describes the development of a mathematical model of a differential pressure cell, and its application in MATLAB. The model is also examined in SIMULINK, for the purposes of comparison of the model with the real world. Furthermore we also describe the application of a system identification method, using a multifrequency binary test signal, for comparison with the mathematical model. The... View full abstract»

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  • Time domain uncertainty bound of signal reconstruction in the case of jittery and noisy measurements

    Publication Year: 1998, Page(s):1296 - 1301 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Time domain measurements are distorted by the measurement system if the bandwidth of the system is not sufficiently high compared to that of the signal to be measured. If the distortion is known the measured signal can be compensated (inverse filtering or deconvolution). Since the measurement is always corrupted by noise the reconstruction is an estimation task. Our aim is to investigate the error... View full abstract»

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  • Conductivity sensor for mining applications

    Publication Year: 1998, Page(s):1050 - 1055 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    Conductivity has been used in the past years to detect interfaces in mining processes, in concentrate thickener to detect the mud line, underflow density and thickener solids inventory. However, the sensors used are rather slow and not appropriate for measurement of conductivity in processes with a fast dynamic. In this paper a fast solid state conductivity sensor which uses several cells simultan... View full abstract»

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  • Multiple wavelength analysis of radiation induced attenuation on optical fibres: a novel approach in fibre optic dosimetry

    Publication Year: 1998, Page(s):953 - 956 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    In an attempt to cope with annealing effects, temperature and other dependencies, the radiation induced attenuation in optical fibres is processed at different wavelengths to extract the total dose. The validity of the approach is demonstrated for the annealing effects in low Cl, high OH pure silica fibres. The heuristic “black box” analysis is further supported through deconvolution o... View full abstract»

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  • An intrinsic fiber optic temperature sensor

    Publication Year: 1998, Page(s):1067 - 1070 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The paper deals with a new fiber optic temperature sensor. The relationship between temperature and refractive index of a “reference” liquid is used to show that the sensing fiber output follows temperature changes of an external fluid with very low response time. The fiber optic sensing element and the low cost measurement hardware are described together with the first experimental re... View full abstract»

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  • Detection of multiple sinusoids buried in noise via balanced model truncation

    Publication Year: 1998, Page(s):1353 - 1358 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    In this paper we examine the problem of detecting and enhancing multiple sinusoidal tones buried in noise, employing an ARMA-like model based approach, but without the non-linear optimizations. The ARMA-like models are generated through the use of the Balanced Model Truncation (BMT) method-a powerful filter approximation technique View full abstract»

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