Abstract
Near Infrared Spectroscopy (NIRS) can be employed to monitor noninvasively and continuously local changes in hemodynamics and oxygenation of human tissues. A portable NIRS research-grade acquisition system, dedicated to measurements during muscular exercise, is presented. The instrument is able to control up to eight LED sources and two detectors. A digital correlation technique, implemented on a single-chip RISC microcontroller, performs source-to-detector multiplexing. Such algorithm is highly optimized for computational efficiency and ambient noise rejection. Software-configurable input stages allow for flexibility in instrument setup. As a result of the specific correlation technique employed, the instrument is compact, lightweight and efficient. Clinical tests on oxygen consumption show excellent performance.
| Original language | English |
|---|---|
| Article number | P04005 |
| Journal | Journal of Instrumentation |
| Volume | 2 |
| DOIs | |
| Publication status | Published - 11 Apr 2007 |
Keywords
- Digital signal processing (DSP)
- Front-end electronics for detector readout
- Optical detector readout concepts
- Photon detectors for UV
- Visible and IR photons (gas) (gas-photocathodes, solid-photocathodes)
ASJC Scopus subject areas
- Mathematical Physics
- Instrumentation
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