Sensing device having capacitive force sensor

Details Sensing device having capacitive force sensor Sensing device having capacitive force sensor

G - Physics

06

K

G06K 7/08 (2006.01) G06K 7/10 (2006.01)

Patent

CA 2681014

A sensing device is provided for interacting with a substrate. The sensing device has a force sensor for detecting whether the sensing device is interacting with the substrate and an image sensor for sensing coded data disposed on the substrate. The force sensor has a capacitive sensor circuit incorporating a sensor capacitor having variable capacitance Csen arranged so that an output of the capacitive sensor circuit is proportional to 1/Csen.

L'invention concerne un dispositif de détection pour interagir avec un substrat. Le dispositif de détection comprend un capteur de force pour détecter si le dispositif de détection interagit ou non avec le substrat et un capteur d'image pour détecter des données codées disposées sur le substrat. Le capteur de force comprend un circuit détecteur capacitif incorporant un condensateur de capteur présentant une capacité Csen variable telle qu'une sortie du circuit détecteur capacitif est proportionnelle à 1/Csen.

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