Volume or fluid level sensing system and method
US7600423B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Oct 24, 2007 |
| Grant date | Oct 13, 2009 |
| Priority date | — |
| Expiry date | Mar 23, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A volume or fluid level sensing system as taught by the present invention comprises a flexible bladder, a solenoidal coil, a means for volume or fluid level measurement, and a user interface. Means for volume or fluid level measurement are preferentially means for inductance measurement which may be selected from the set including timing inductive measurement means, AC voltage divider inductive measurement means, resonance inductive measurement means. A user interface may be selected from the set including a digital display, a data interface, a voltage level display device, or a current level display device. The solenoidal coil may be embedded in the flexible bladder or in a flexible sock encompassing the flexible bladder. In addition, a bladder volume or fluid level indicating method as taught by the present invention comprises the steps of inductance measurement, volume or fluid level inference, and volume or fluid level reporting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.