公开(公告)号：US09645104B2

公开(公告)日：2017-05-09

申请号：US14246592

申请日：2014-04-07

Applicant: LifeScan Scotland Limited

Inventor： David Elder ,  Sven Rippel

IPC: G01R27/26 ,  G01N27/30 ,  G01N27/327 ,  G01N27/22

CPC classification number: G01N27/307 ,  G01N27/22 ,  G01N27/3274

Abstract: A method and system are provided to determine fill sufficiency of a biosensor test chamber by determining capacitance of the test chamber in which an electrochemical reaction is initiated in the test chamber and an oscillating voltage of a predetermined frequency is applied to the chamber. A phase angle between a current output and the oscillating voltage from the chamber is determined and the capacitance is calculated based on a product of the current output and a sine of the phase angle divided by a product of two times pi times the frequency and the voltage.