Electro-optical, DSO-supported fast position detector

P. A. Calva, W. Fonsec, R. Linares, A. Robledo-Martinez, J. de la Rosa

Research output: Contribution to journalArticlepeer-review

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Abstract

A fast, solid-state, two-dimensional position detector based on photodiodes as a means of image conversion is described. The detector uses conventional optics to project an image onto a matrix of photodiodes; the resulting electric pulses are encoded both in amplitude and time duration and merged into a one-channel signal which can be stored in a fast digital storage oscilloscope (DSO). The stored oscillograms can then be analyzed to reconstruct the trajectory of the moving target. The maximum tracking speed of the device is of the order of tens of nanoseconds. An application in which the device tracks the propagation of a fast electrical discharge is also described.

Original languageEnglish
Pages (from-to)133-137
Number of pages5
JournalMeasurement: Journal of the International Measurement Confederation
Volume15
Issue number2
DOIs
StatePublished - May 1995

Keywords

  • Electrical discharges
  • Encoding
  • Position detector

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