Capacitive sensor systems and methods with increased resolution and automatic calibration
US6940291B1 · kind B1 · utility
277Cited by
10References
11Claims
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Key dates
| Filing date | Jul 22, 2003 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Sep 20, 2023 |
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.