Digital implementation of the capacitively coupled electrical substitution for resistive bolometers

Matthieu Denoual (1) , Sylvain Lebargy (1) , Gilles Allègre (1)

1 Equipe Electronique - Laboratoire GREYC - UMR6072

In this paper, digital implementation is proposed for the capacitively coupled electrical substitution for resistive bolometers. The capacitively coupled electrical substitution is a closed-loop configuration that allows operation of a resistive bolometer without any change in the structure of the sensor itself. The digital implementation of this closed-loop configuration linearizes the system composed of the bolometer and the electronics for the electrical substitution. Hence, a better optimization of the system control can be achieved. Besides, the use of the system and the set-up of the experiments are made easier with the digital implementation. The performance of the digital implementation was evaluated with optical radiation power stimulation and a resistive bolometer made on a glass membrane.

Mots clés: uncooled bolometer; digital electrical substitution; thermal feedback

Domaines: Electronique

Matthieu Denoual, Sylvain Lebargy, Gilles Allègre. Digital implementation of the capacitively coupled electrical substitution for resistive bolometers. Measurement Science and Technology, 2010, 21, pp.015205. ⟨10.1088/0957-0233/21/1/015205⟩. ⟨hal-00979998⟩