Micro-Electro-Mechanical Systems in Light Stabilization

This article discusses application considerations in the micro-electro-mechanical system's optical sensor. Furthermore, the provided analysis is limited to application issues occurring in research or industrial applications. In particular, a case was discussed where the sensor was used as a feedback signal source. Its output signal is used to stabilize the flux of an LED lamp. Thus, the function of the sensor was the periodic measurement of the spectral flux distribution. The application problem of such a sensor is the output analogue signal conditioning. This is necessary to perform analogue-to-digital conversion and further digital processing. In the discussed case, design limitations come from the specifics of the output signal. This signal is a sequence of rectangular pulses, which can have different frequencies, and their amplitude varies over a wide range. The fact such a signal must be conditioned additionally discourages some optical researchers from using such sensors. The developed driver allows measurement using an optical light sensor in the band from 340 nm to 780 nm with a resolution of about 12 nm; in the range of flux values from about 10 nW to 1 mu W, and frequencies up to several kHz. The proposed sensor driver was developed and tested. Measurement results are presented in the paper's final part.

Automated summary

This article discusses the application considerations in the optical sensor of a micro-electro-mechanical system (MEMS). The analysis provided is limited to application issues encountered in research or industrial applications. The article focuses on a case where the sensor is used as a feedback signal source to stabilize the flux of an LED lamp. The main challenge in using such sensors is the conditioning of the output analog signal for further digital processing.