Sharing a single electrode between skin resistance and capacitance measurements
US9770185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2014 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Jun 23, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/18
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Wearable devices are described herein including a housing and a mount configured to mount the housing to an external surface of a wearer. The wearable devices further include first and second electrical contacts protruding from the housing and configured such that the electrical contacts can be used to measure a Galvanic skin resistance of skin proximate to the electrical contacts when the wearable device is mounted to the external surface of the wearer. The electrical contacts are additionally configured to measure a capacitance between electrical contacts. The measured capacitance between the electrical contacts could be related to a capacitance of skin proximate to the electrical contacts when the wearable device is mounted to the external surface of the wearer. The wearable devices further include an electronically switched capacitor connected between the electrical contacts that can be operated to enable the Galvanic skin resistance and capacitance measurements described above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.