A high resolution virtual AD converter

Author

Moschioni, Giovanni ; Saggin, Bortolino

Author_Institution

Dipt. di Meccanica, Politecnico di Milano, Italy

fYear

2003

fDate

27-29 July 2003

Firstpage

163

Lastpage

168

Abstract

Data acquisition boards have been widely used in recent times as well as a dramatic decrease in costs and improvement of speed performances. The most common architecture of low-cost boards has one converter and a multiplexing system with variable gains. Such boards allow very good flexibility in terms of amplitude and frequency rates, but have the problem of non-simultaneity of channel sampling. At the same time most boards have a 12 or 16 bit resolution that in many cases in acoustics and vibrations are satisfactory. The method proposed in this work based on software algorithms, leveraging on low cost boards, permits a relevant improvement in resolution of data conversion and the synchronization of multiplexed channels.

Keywords

analogue-digital conversion; channel coding; data acquisition; data structures; frequency division multiplexing; virtual reality; PGIA; amplitude rate; data acquisition board; data conversion resolution; flexibility; frequency rate; high resolution virtual AD converter; input signal; multiplexed channel synchronization; multiplexing system; nonsimultaneous channel sampling; programmable gain instrumentation amplifier; software algorithm; speed performance; Acoustic measurements; Artificial intelligence; Costs; Data acquisition; Data conversion; Frequency synchronization; Gain; Multiplexing; Sampling methods; Signal resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Virtual Environments, Human-Computer Interfaces and Measurement Systems, 2003. VECIMS '03. 2003 IEEE International Symposium on

Print_ISBN

0-7803-7785-0

Type

conf

DOI

10.1109/VECIMS.2003.1227048

Filename

1227048