Low-power accelerometer
US10725067B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 5, 2017 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Jul 14, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/0036
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an accelerometer comprising a plurality of proof-masses (M1-M4) moveable along a measurement axis (AB); a respective spring (K1-K4) rigidly attached to each proof-mass, configured to exert an elastic recall on the proof-mass in the measurement axis; a fixed stop (S1-S4) associated with each proof-mass, arranged to intercept the proof-mass when the acceleration in the measurement axis increases by a step; and an electrical contact associated with each stop, configured to be closed when the associated proof-mass reaches the stop. The proof-masses are suspended in series with respect to one another by springs in the measurement axis, the stops being arranged to successively intercept the respective proof-masses for increasing thresholds of acceleration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.