Non-contact liquid sensing technologies
US11300536B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2020 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | Dec 18, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Technology directed to non-contact liquid sensing is described. One processing device includes a multi-port network, a capacitance measurement circuit, and a digital processing circuit. Processing device measures a first set and a second set of currents associated with a first electrode and a second electrode coupled to an exterior surface of a container holding liquid. Processing device determines independent impedances of the container, the liquid, and the liquid and container using the first set of currents and the second set of currents. Processing device determines an electrical property of the liquid using the independent impedances of the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.