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This paper analyzes errors associated with the analog-to-digital (A/D) conversion process of a digital signal processing unit (DSP) within the operation of an optical current transducer (OCT). Quantization of the analog current measurement signal leads to measurement errors which are a direct consequence of the uncertainty with which an N-bit resolution A/D assigns a binary word for a given analog input value. This paper presents comprehensive simulations of the performance of different current sensors monitored by the DSP unit and discusses aspects of compatibility between the sensor dynamic range and the resolution of an A/D conversion process. Recommendations are given on how to match the OCT to the given A/D parameters, and vice versa, in order to meet specified accuracy requirements
Published in:
Instrumentation and Measurement, IEEE Transactions on
(Volume:49
,
Issue:
6
)
Date of Publication: Dec 2000
- Page(s):
- 1254 - 1259
- ISSN :
- 0018-9456
- INSPEC Accession Number:
- 6822833
- Digital Object Identifier :
- 10.1109/19.893265
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Dec 2000
- Sponsored by :
- IEEE Instrumentation and Measurement Society
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