Impulse analysis for flow sensor-based fluid control system

Details Impulse analysis for flow sensor-based fluid control system Impulse analysis for flow sensor-based fluid control system

2010-11-05

2011-11-29

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S577000, C604S067000, C702S049000, C073S001160, C073S861470

Reexamination Certificate

active

08067760

ABSTRACT:
A fluid flow control system using flow rate changes to extract additional information from an in-line flow sensor. The system provides the ability to determine a position of a movable flow sensor element of a flow sensor by illuminating a photosensitive pixel array with a light source to create a first set of pixel intensity values introducing an abrupt change to the fluid driving pressure, illuminating the photosensitive pixel array with a light source to create a second set of pixel intensity values, and calculating the difference between the first and second sets of pixel intensity values as a function of pixel position.

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