Development of a multispectral sensory microsystem to determine wavelength-dependent lateral intensity distributions for reflective pulse oximetry
|German title:||Entwicklung eines multispektralen sensorischen Mikrosystems zur Bestimmung wellenlängenabhängiger lateraler Intensitätsverteilungen für die reflektive Pulsoximitrie|
|Duration:||1st January 2012 - 28th February 2014|
|Description:||As part of the MS-LateIn project, simulation models for light-fabric interaction were created. Based on the resulting results, design rules and tools for the implementation of these in effective photodiode designs were generated.
First photodiode arrays as well as the corresponding readout electronics were fabricated. With the help of the created control and evaluation software it was possible for us for the first time to record spatially and temporally resolved PPG measurements with up to 4 wavelengths, quasi simultaneously.
The evaluation of first measurement results at different body sites of several test persons provided data sets with the help of which optimal distances between emitting and receiving diodes (body site and wavelength dependent) could be derived.
With the tools created (simulation program, design rules, electronics and software) it is possible to design and read out sensor arrays with the help of which existing and future PPG sensor technology can be adapted to different requirements in terms of size and efficiency.
In addition, the manufactured sensors provide a possibility to investigate cross influences (contact pressure, temperature, ...) on the measurement results via the spatial intensity decay. Mathematical methods could contribute to provide results independent of transverse influences from the more extensive measurement results.
|Contact:||Contact us about this project via our business unit MOEMS|
News articles about MS-LateIn:
|Optical radiator-receiver modules as planar microsystems
4. April 2014
|Optimization of photoplethysmography systems with spectral and spatially resolved reflectance sensing
28. October 2013
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