Displacement sensing
US11561111B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2019 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Oct 25, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/962
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensing apparatus comprising a displacement sensor element arranged to sense a separation between a first element (2) and a second element (3) movably mounted with respect to the first element; an acceleration sensor element configured to sense an acceleration associated with the first element; displacement measurement circuitry (4A) configured to make a measurement indicative of separation on the basis of the sensed separation; acceleration measurement circuitry (4C) configured to make a measurement of acceleration on the basis of the sensed acceleration; and a processing element (4D) configured to output a signal to indicate there is determined to be a change in the separation of the second element relative to the first element on the basis of the measurement indicative of separation and the measurement of acceleration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.