US 12,030,380 B2
Method and system of deploying ignition interlock device functionality
Amanda Renee Mallinger, Des Moines, IA (US); Jennifer Ringgenberg, West Des Moines, IA (US); Usha Rani Chintala, Grimes, IA (US); Douglas Robert Bruce, Urbandale, IA (US); and Sujitha Chandra Mohan, Waukee, IA (US)
Assigned to Consumer Safety Technology, LLC, Des Moines, IA (US)
Filed by Consumer Safety Technology, LLC, Des Moines, IA (US)
Filed on Aug. 17, 2022, as Appl. No. 17/889,808.
Application 17/889,808 is a continuation of application No. 16/940,101, filed on Jul. 27, 2020, granted, now 11,427,083.
Prior Publication US 2023/0089401 A1, Mar. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B60K 28/06 (2006.01); A61B 5/00 (2006.01)
CPC B60K 28/063 (2013.01) [A61B 5/6893 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of deploying an ignition interlock device (IID), the method comprising:
receiving an initial sample volume of breath from a user;
measuring a breath alcohol content (BrAC) of the initial sample volume of breath with an alcohol-sensing element of the IID;
after measuring the BrAC of the initial sample volume of breath, receiving a subsequent sample volume of breath from the user;
measuring the BrAC of the subsequent sample volume of breath with the alcohol-sensing element of the IID;
wherein the initial sample volume of breath and the subsequent sample volume of breath each comprise at least one of an alveolar breath component and an interferent breath component;
estimating a dissipation rate of alcohol between the initial sample volume of breath and the subsequent sample volume of breath;
determining, responsive to estimating the dissipation rate of alcohol, at least a subset of the BrAC measurements as attributable to the alveolar breath component but not the interferent breath component; and
performing one of triggering and not triggering the IID into a violation state based on the at least a subset of the BrAC measurements.