Capacitive sensor systems and methods with increased resolution and automatic calibration
US6661239B1 · kind B1 · utility
261Cited by
12References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 2, 2002 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Feb 23, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/94026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems for capacitive proximity and contact sensing employ one or more simple sensors (which may be a conductive fiber or pattern of conductive ink) in communication with a microcontroller. Digital signal processing executed by the microcontroller enables resolution enhancement, automatic and continuous calibration, noise reduction, pattern recognition and the configuration of virtual sensors capable of detecting how an object incorporating the sensors is being manipulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.