Device for detecting an actuation angle of an element...

Details Device for detecting an actuation angle of an element... Device for detecting an actuation angle of an element...

G - Physics

01

D

G01D 5/14 (2006.01)

Patent

CA 2686972

Disclosed is a device (10) for detecting an actuation angle of an element (11) that is rotatable about a shaft (18). Said device (10) comprises a sensor unit (13) which emits an electrical signal in accordance with the angle of rotation and is equipped with a stationary Hall sensor array (13) and an annular permanent magnet (14) that is non-movably connected to the rotatable element (11). In order to be able to also detect an actuation angle of more than 90° in the same direction and especially an angle of more than 180°, the Hall sensor array (13) encompasses two or more individual Hall sensors (25) which are disposed at an angular distance around the annular permanent magnet (14). The Hall sensor (25) located in the most advantageous zone of the characteristic thereof can be selected by a microcontroller according to the current position of the rotatable or pivotable element (11).

Dispositif (10) destiné à saisir un angle de réglage d'un élément pivotant (11) autour d'un axe (18), ce dispositif comportant un dispositif capteur (13) qui émet un signal électrique en fonction de l'angle de pivotement et qui présente un aimant permanent (14) annulaire relié solidaire en mouvement avec l'élément pivotant (11) ainsi qu'un dispositif capteur à effet Hall (13) fixe. L'invention vise à saisir un angle de réglage supérieur à 90° dans la même direction, notamment un angle supérieur à 180°. À cet effet, le dispositif capteur à effet Hall (13) comporte deux capteurs à effet Hall (25) ou plus, lesquels sont individuels et disposés à une certaine distance angulaire autour de l'aimant permanent (14) annulaire, un micro-contrôleur sélectionnant le capteur à effet Hall (25) qui se trouve dans sa zone de caractéristique en fonction de la position momentanée de l'élément pivotant (11).

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