Thin weighing scale using ultrasonic waves and method using same
US10267672B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2016 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | May 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G21/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A weighing device, configured to measure at least the weight of a person or an object, comprising a control unit, a sensory plate, a top plate, spacer pads, interposed between the plates, wherein the sensory plate has an emission transducer configured to generate, a burst of Lamb waves at the surface of the sensory plate, a reception transducer, to receive echoed Lamb waves propagated through the sensory plate, the temporal profile of the echoed Lamb waves being dependent on the weight applied to the top plate and passed by the spacer pads to the sensory plate, wherein the control unit determines the weight applied to the top plate by analysis of the temporal profile of the echoed Lamb waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.