Robotics practicals
MICRO-453
Persons In charge: Théo Jean SanlavilleRoom: BM 32...
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Description
Persons In charge: Théo Jean Sanlaville
Duration: 4 hours
Goal:
The goal of this practical is to better understand the origin of the noise in electronic and optoelectronic measurement systems. We will measure intrinsic noise sources (in particular the thermal noise in resistors and the shot noise in photodiodes). In order to measure these intrinsic noise sources, we will build an appropriate amplification chain (followed by an appropriate analog-to-digital converter and a digital signal processing algorithm). This will help in elucidating if and how the amplification chain contributes to the overall measured noise. We will also implement a synchronous modulation/demodulation scheme (lock-in detection) as a mean to improve the signal-to-noise ratio of an optical sensor in presence of 1/f noise and interferences at low frequencies.