CPC B60K 28/063 (2013.01) [A61B 5/6893 (2013.01)] | 20 Claims |
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.
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