Standby biasing of electrochemical sensor to reduce sensor stabilization time during measurement
US8926809B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2013 |
| Grant date | Jan 6, 2015 |
| Priority date | — |
| Expiry date | Sep 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/3271
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An eye-mountable device includes an electrochemical sensor embedded in a polymeric material configured for mounting to a surface of an eye. The electrochemical sensor applies a stabilization voltage between a working electrode and a reference electrode to allow the amperometric current to stabilize before powering measurement electronics configured to measure the amperometric current and communicate the measured amperometric current. The electrochemical sensor consumes less power while applying the stabilization voltage than during the measurement. The measurement is initiated in response to receiving a measurement signal at an antenna in the eye-mountable device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.