Digital scale with enhanced sensing mechanism
US11680847B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Feb 24, 2021 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Jun 16, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G21/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A digital scale includes a weighing platform, a plurality of weight sensors, and a central processing unit. Each of the weight sensors includes a first sensing mechanism and a second sensing mechanism. The first sensing mechanism includes a first elastic member, and a first movement detection device arranged to transform a movement of the first elastic member to a first electrical signal. The second sensing mechanism includes, a second elastic member and a second movement detection device arranged to transform a movement of the second elastic member to a second electrical signal. When an external load greater than a predetermined threshold is applied on the weighing platform, the first elastic member is arranged to be driven to move and in turn pushes the second elastic member to move. A measurement of the external load is obtained by combining and the first electrical signal and the second electrical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.