Digital linearization in a weighing cell
US10132672B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2016 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Feb 3, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G3/1414
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A force exerted by a load is determined in a force-measuring device (1) operating under electromagnetic force compensation. The device includes a measurement transducer (18, 118) with a coil (20, 120) movably immersed in a magnet system (19, 119) and a force-transmitting mechanical connection between a load-receiving part (12, 112) and the coil or magnet system. A position sensor (21, 28), also part of the device, determines a displacement of the coil from its settling position relative to the magnet system (19, 119) which occurs when the load is placed on the load-receiving part. An electrical current (24) flowing through the coil generates an electromagnetic force between the coil and the magnet system whereby the coil and the load-receiving part are returned to, and/or held at, the settling position. The magnitude of current and the amount of displacement are used to determine the weight force exerted by the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.