Self-adaptive sampling rate data acquisition in JET’s correlation reflectometer

Arcas Castro, Guillermo de; López Navarro, Juan Manuel; Barrera Lopez de Turiso, Eduardo; Vega, Jesús; Ruiz González, Mariano y Murari, Andrea (2008). Self-adaptive sampling rate data acquisition in JET’s correlation reflectometer. "Review of Scientific Instruments", v. 79 (n. 10); pp.. ISSN 0034-6748. https://doi.org/10.1063/1.2965011.

Descripción

Título: Self-adaptive sampling rate data acquisition in JET’s correlation reflectometer
Autor/es:
  • Arcas Castro, Guillermo de
  • López Navarro, Juan Manuel
  • Barrera Lopez de Turiso, Eduardo
  • Vega, Jesús
  • Ruiz González, Mariano
  • Murari, Andrea
Tipo de Documento: Artículo
Título de Revista/Publicación: Review of Scientific Instruments
Fecha: Octubre 2008
Volumen: 79
Materias:
Escuela: E.U.I.T. Telecomunicación (UPM) [antigua denominación]
Departamento: Sistemas Electrónicos y de Control [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Data acquisition systems with self-adaptive sampling rate capabilities have been proposed as a solution to reduce the shear amount of data collected in every discharge of present fusion devices. This paper discusses the design of such a system for its use in the KG8B correlation reflectometer at JET. The system, which is based on the ITMS platform, continuously adapts the sample rate during the acquisition depending on the signal bandwidth. Data are acquired continuously at the expected maximum sample rate and transferred to a memory buffer in the host processor. Thereafter the rest of the process is based on software. Data are read from the memory buffer in blocks and for each block an intelligent decimation algorithm is applied. The decimation algorithm determines the signal bandwidth for each block in order to choose the optimum sample rate for that block, and from there the decimation factor to be used. Memory buffers are used to adapt the throughput of the three main software modules _data acquisition, processing, and storage_ following a typical producer-consumer architecture. The system optimizes the amount of data collected while maintaining the same information. Design issues are discussed and results of performance evaluation are presented.

Más información

ID de Registro: 2614
Identificador DC: http://oa.upm.es/2614/
Identificador OAI: oai:oa.upm.es:2614
Identificador DOI: 10.1063/1.2965011
URL Oficial: http://rsi.aip.org/rsinak/v79/i10
Depositado por: Memoria Investigacion
Depositado el: 18 Mar 2010 12:58
Ultima Modificación: 20 Abr 2016 12:15
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