Flow metering using a difference image for liquid parameter estimation
US9772044B2 · kind B2 · utility
96Cited by
218References
28Claims
0Family size
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Key dates
| Filing date | Nov 12, 2015 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Mar 17, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7287
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flow meter includes an image sensor, a coupler, a support member and one or more processors. The coupler is adapted to couple to a drip chamber. The support member is operatively coupled to the coupler. The image sensor has a field of view and is operatively coupled to the support member. The image sensor is positioned to view the drip chamber within the field of view. The processor receives data from the image sensor and is configured to: receive a first image from the image sensor, compare the first image to a second image, and generate a difference image based upon the comparison between the first and second images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.