Modular multi-channel data acquisition systems

Artyukh, Y.; Bilinskis, Ivars; Рыбаков, А. С.; Sudars, Kaspars; Vedin, V.

doi:10.3103/s0146411608030012

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…It serves as a demonstrator that can undertake radio frequency signal analysis in the time and frequency domains, with an operating bandwidth ranging up to 1.2 GHz at a mean non-uniform sample rate of 80 MS/s. Besides anti-aliasing measures, another system aspect improvement includes massive data acquisition from distributed signal sources, making it technically and economically feasible to gather cost-effective data (Artyukh, Bilinskis, Sudars, and Vedin 2008). In any case, the main benefit of nonuniform sampling designs for spectral analysis is where direct digital processing of a wide band is desirable.…”

Section: Principal Applicationsmentioning

confidence: 99%

Non-uniform sampling strategies for digital control

Khan

Goodall

Dixon

2013

International Journal of Systems Science

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Most conventional control algorithms cause numerical problems where data is collected at sampling rates that are substantially higher than the dynamics of the equivalent continuous-time operation that is being implemented. This is of relevant interest in applications of digital control, in which high sample rates are routinely dictated by the system stability requirements rather than the signal processing needs. Digital control systems exhibit bandwidth limitations enforced by their closed-loop frequency requirements that demand very high sample rates. Considerable recent progress in reducing sample frequency requirements has been made through the use of nonuniform sampling schemes, so called alias-free signal processing. The approach prompts the simplification of complex systems and consequently enhances the numerical conditioning of the implementation algorithms that otherwise would require very high uniform sample rates. However, the control communities have not yet investigated the use of intentional non-uniform sampling. The purpose of this article is to address some algorithmic issues when using such regimes for digital control.

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Section: Principal Applicationsmentioning

confidence: 99%

Non-uniform sampling strategies for digital control

Khan

Goodall

Dixon

2013

International Journal of Systems Science

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“…And both of these analog and digital information transmission options have their advantages and drawbacks [1]- [6]. The specific conditions for transmitting event timing information are investigated for two typical types of applications, namely, for: 1) Gathering and transmission of data from a cluster of remote samplers to the master part of the respective distributed ADC performed in the process of data acquisition from a large quantity of signal sources [7], [8]; 2) High-speed short-distance transmission of digital data by transmitting position-modulated short pulses and information content recovery based on time variable sampling of ADC.…”

Section: Introductionmentioning

confidence: 99%

“…Using this type of digital signals leads to various benefits, in addition to the possibility of compressing data that are to be transmitted. For instance, alias-free data acquisition from wideband signal sources [9] and complexity-reduced processing of this type of data in the frequency domain can be performed [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Conditions for Short-distance Transmission of Event Timing Data

Bilinskis

Skageris

Sudars

2013

ElAEE

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Specifics of event timing data transmission are experimentally investigated under conditions typical for multichannel data acquisition from a large quantity of signal sources. The events, in the considered case, are analog input signal and sinusoidal reference function crossings. The sequences of the crossing time instants represent the respective analog input signals and these sequences have to be transmitted to the signal reconstruction subsystem. An experimental system for fast short-distance transmission has been built. It performs data encoding on the basis of digital pulse position modulation with 10 picoseconds resolution. The achievable data encoding resolution and other vital parameters characterizing data transmission systems of this type were evaluated on this basis.

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Towards Affordable Home Health Care Devices Using Reconfigurable System-on-Chip Technology

Abdallah¹,

Elkeelany²

2011

Applied Biomedical Engineering

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Modular multi-channel data acquisition systems

Cited by 3 publications

References 1 publication

Non-uniform sampling strategies for digital control

Non-uniform sampling strategies for digital control

Experimental Evaluation of Conditions for Short-distance Transmission of Event Timing Data

Towards Affordable Home Health Care Devices Using Reconfigurable System-on-Chip Technology

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