Comptes Rendus
A novel capacitive pressure sensor structure with high sensitivity and quasi-linear response
[Une nouvelle structure de capteur de pression capacitif avec haute sensibilitée et réponse quasi-linéaire]
Comptes Rendus. Mécanique, Volume 332 (2004) no. 2, pp. 141-146.

Une nouvelle structure de capteur de pression capacitif permettant d'augmenter simultanément la sensibilité et la linéarité du transducteur a été proposée. Cette structure contient deux condensateurs qui varient avec la pression mais dans des sens opposés. Pour augmenter davantage la sensibilité de chaque condensateur, la membrane sensible à la pression porte une bosse au centre. La position optimale et la longueur de la bosse sont également calculées.

This paper describes a new capacitive structure of pressure sensor to increase simultaneously the sensitivity and the linearity of the transducer. This structure contains two capacitors which change in response to pressure, but in opposite senses. To increase even more the sensitivity of each capacitor, the pressure sensitive diaphragm carries a central boss. The optimal position and the length of the boss are also calculated.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crme.2003.10.001
Keywords: Control, Capacitive pressure sensor, Linearity, Sensitivity
Mot clés : Automatique, Capteur de pression capacitif, Linéarité, Sensibilité
Aziz Ettouhami 1 ; Noureddine Zahid 1 ; Mourad Elbelkacemi 1

1 Laboratoire conception et systèmes, faculté des sciences, Université Mohammed V, avenue Ibn Battouta, BP 1014, Rabat, Morocco
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Aziz Ettouhami; Noureddine Zahid; Mourad Elbelkacemi. A novel capacitive pressure sensor structure with high sensitivity and quasi-linear response. Comptes Rendus. Mécanique, Volume 332 (2004) no. 2, pp. 141-146. doi : 10.1016/j.crme.2003.10.001. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2003.10.001/

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