Process for Peristaltic Pump Control
AssigneeRoche Diagnostics Operations, Inc.
InventorsSimon Ickinger, Arnold Bartel
Life of this patent
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Abstract
A peristaltic pump is provided comprising squeezing elements moved by at least one actuator, which squeezing elements act on a tube in which a medium is conveyed, with the squeezing elements successively getting into and out of a squeezing engagement with the tube. A process for controlling the peristaltic pump comprises measuring over time a fluidic parameter representative for the flow rate of the medium through the tube, determining the relative undulation of the flow rate of the medium from the measured temporal course of the fluidic parameter, and smoothing the undulation by adjusting the progression speed of the squeezing elements on the basis of the determined undulation of the flow rate.
Claims11
A process for controlling a peristaltic pump comprising squeezing elements moved by at least one actuator, which squeezing elements act on a tube in which a medium is conveyed, with the squeezing elements successively getting into and out of a squeezing engagement with the tube, characterized by:
- measuring over time a fluidic parameter representative for the flow rate of the medium through the tube,
- determining the relative undulation of the flow rate of the medium from the measured temporal course of the fluidic parameter, and
- smoothing the undulation by adjusting the progression speed of the squeezing elements on the basis of the determined undulation of the flow rate.
Dependencies are inferred from the claim text.