Flowmeter comprising an electronic magnetic sensor with buffered power supply
US12013266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2020 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Oct 1, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2017/9713
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flow meter for a home appliance, in particular a dishwasher or a washing machine, the flow meter comprising a control unit having a first power supply terminal, a second power supply terminal and a digital input terminal which is connected to the second power supply terminal via a limiting element; a movable element which is moved by a flow of a fluid and which comprises at least one movable magnetic element; and a two-lead magneto-sensitive unit which comprises a signal terminal connected to the digital input terminal of the control unit and a reference terminal connected to the first power supply terminal of the control unit; wherein the magneto-sensitive unit comprises a magnetic sensor element having two output terminals connected to the signal terminal and the reference terminal, and a power supply terminal; and a buffered power supply unit configured to generate a continuous auxiliary voltage from the signal terminal and the reference terminal of the magneto-sensitive unit and to provide the continuous auxiliary voltage at the power supply terminal of the magnetic sensor element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.