Peristaltic pump with rotor position sensing

Details Peristaltic pump with rotor position sensing Peristaltic pump with rotor position sensing

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 49/02 (2006.01) F04B 43/12 (2006.01)

Patent

CA 2195189

The position of a rotating pump element is sensed by a reflective object sensor (406) in association with a view disk (412) coupled to the operative element for rotation in synchrony with the operative element. The view disk has first (S1) and second (S2) surface portions that present themselves in succession to the reflective object sensor during rotation of the operative element. The first surface portion is spaced at or near the optical focus (C) of the reflective object sensor, whereas the second surface portion is not. The reflective object sensor thus generates different outputs, depending upon whether the first surface or second surface portions are in optical alignment with the reflective object sensor.

La position d'un élément rotatif d'une pompe est détectée par un capteur (406) d'objet réfléchissant, en association avec un disque (412) d'observation couplé à l'élément fonctionnel rotatif aux fins de rotation synchronisée avec celui-ci. Ce disque comporte une première (S1) et une seconde (S2) portion de surface, lesquelles se présentent successivement dans le champ du capteur lors de la rotation de l'élément fonctionnel. La première portion de surface est espacée du foyer (C) optique du capteur, ou proche de celui-ci, tandis que la seconde portion ne l'est pas. Ce capteur produit ainsi différentes valeurs de sortie, en fonction de la portion de surface, la première ou la seconde, se trouvant dans l'alignement optique du capteur.

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