Liquid level sensor and method for sensing liquid level
US9903748B1 · kind B1 · utility
8Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2016 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Oct 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F25/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid level sensor and a method for sensing a liquid level adapated to a liquid storage container are provided. The liquid level sensor includes a pluraity of sensing electrodes and a liquid level determining circuit. The sensing electrodes are arranged on a side wall of the liquid storage container, and correspond to different liquid levels. The liquid level determining circuit is coupled to the sensing electrodes, and scans capacitance values of the sensing electrodes, so as to determine a liquid level of a liquid in the liquid storage container based on the current capacitance values of the sensing electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.