Seat weight sensor
US6109117A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60N2210/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A variable resistance weight sensor incorporates a plurality of force sensitive resistance elements disposed between a pair of force distributing plates. One of the force distributing plates incorporates an associated plurality of protrusions for transferring, in cooperation with the second force distributing plate, an associated component of the compressive load to the associated force sensitive resistive element, whereby the resulting resistance of the force sensitive resistive element is inversely related to the magnitude of the associated compressive load component. The force sensitive resistive elements are interconnected in series, whereby a signal processor measures the applied load from the associated series resistance. A diode connected in parallel with the series combination of force sensitive resistive elements provides a means for diagnosing the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.