Virtual instrument for instantaneous power measurements

Zrudsky, Donald R.; Pichler, Joachim

doi:10.1109/19.155920

Cited by 33 publications

(6 citation statements)

References 3 publications

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“…Our research extends the trend and demonstrates the development of the computer based mixed signal digital oscilloscope. [9,10]. Conventional signals such as the sinusoids have a constant frequency and the amplitude only varies with time throughout the signal definition.…”

Section: Introductionmentioning

confidence: 99%

A DAQ card based mixed signal virtual oscilloscope

Rana

Khan²

2008

Measurement

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Complex signals find many applications in SONAR, RADAR, Echo Location Systems and for studying the resonant frequencies. Digital Storage Oscilloscopes (DSO) is used these days for acquisition and display of routine signals. This instrument, found in every measurement laboratory, though potent in displaying simple periodic waveforms like sinusoids fails when frequency-varying time signals are applied. This problem surfaces because the underlying technique of oscilloscope used to trigger the waveform does not acquiesce with complex signals like chirp. Ready solution to this problem is the mixed signal oscilloscope. This is a costly solution and small laboratories cannot afford to have the costly instruments. In this paper, a cost effective DAQ card based mixed signal virtual oscilloscope is proposed to study the complex signals. An intelligent technique, Weighted Hamming Distance (WHD) algorithm was used to accurately trigger the complex waveforms. Also for frequency domain analysis, Joint Time Frequency Analysis (JTFA) techniques were used. A Lab-VIEW TM based virtual instrument was designed and developed with a capability to acquire, display and analyze the triggered signal. The integrated programming language LabVIEW TM was chosen as it offers many simple ready to use functions. In a way the proposal offers a cost effective, fast and flexible solution to treat the complex signals. The need to create such solutions is the consequence of costly hardware systems. The deficiency of conventional hardware, scheme for the virtual oscilloscope for complex signals with some real time experimental results are presented in this work.

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Section: Introductionmentioning

confidence: 99%

A DAQ card based mixed signal virtual oscilloscope

Rana

Khan²

2008

Measurement

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“…This entails using high-sampling-rate high-precision ADCs, as proposed in [15] and [16]. In [15] two high-precision digital voltmeters are used and in [16] an oscilloscope is used. The main disadvantage of these systems is the high cost of the measurement system.…”

Section: Introductionmentioning

confidence: 99%

Operating Conditions Monitoring for High Power Density and Cost-Effective Resonant Power Converters

Sarnago

Lucía

Navarro

et al. 2016

IEEE Trans. Power Electron.

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Resonant power conversion is a key enabling technology for many high performance and high efficiency systems. Induction heating is an example of such systems which outperforms conventional heating technologies, leading to a wide spectrum of industrial, domestic, and medical applications. In order to ensure the proper operation of the resonant converter, accurate converter operation monitoring techniques are required. This paper proposes an effective monitoring technique based on the measurement of the resonant capacitor voltage. The proposed monitoring system provides essential information regarding the output power, soft-switching conditions, and input voltage, while featuring a cost-effective implementation. The proposed technique is validated through an FPGA-controlled resonant power converter applied to induction heating, proving the feasibility of this proposal. 0885-8993 (c)

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“…2 The development of both softwarebased and virtual laboratories has been an active field of research. 3 Several examples of LabVIEW-based experiments can be found in the literature, 3,4,10 and an example of a MATLAB-based experiment was reported by Plummer et al 5 Since this experiment was designed completely in software, it does not need any hardware and therefore is performable anywhere and at any time. This could be an advantage of this experiment compared to those which are hardwired, as students from areas with limited access to electrical equipment would have the chance to practice and challenge their knowledge.…”

Section: Introductionmentioning

confidence: 99%

Reverse engineering of RLC circuits using Matlab: An experiment for electrical circuits course

Alizadeh

Barzegari

Alizadeh

2015

International Journal of Electrical Engineering & Education

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Identifying the contents of a black-box electrical circuit is a challenging experiment. In this paper, we present an approach for identifying the topological structure of the circuit and estimating the values of the internal components, by applying input signals and measuring available signals. The black-box model is provided as a Simulink model, whose contents are not accessible to the students. The overall procedure is performed in Matlab/Simulink environment and the results are obtained for a given circuit and compared with the actual values. The experiment is performed by a group of undergraduate students and the assessment results show its effectiveness in challenging their knowledge.

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Virtual instrument for instantaneous power measurements

Cited by 33 publications

References 3 publications

A DAQ card based mixed signal virtual oscilloscope

A DAQ card based mixed signal virtual oscilloscope

Operating Conditions Monitoring for High Power Density and Cost-Effective Resonant Power Converters

Reverse engineering of RLC circuits using Matlab: An experiment for electrical circuits course

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