Impulse analysis for flow sensor-based fluid control system
US8067760B2 · kind B2 · utility
48Cited by
30References
13Claims
0Family size
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Key dates
| Filing date | Nov 5, 2010 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Nov 5, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3306
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.