	US 12,203,925 B2
	Dual sensor types in intoxicant detection
Scott Ruland, Kansas City, MO (US); and Douglas Edward DeVries, Johnston, IA (US)
Assigned to Consumer Safety Technology, LLC, Des Moines, IA (US)
Filed by Consumer Safety Technology, LLC, Des Moines, IA (US)
Filed on Sep. 14, 2023, as Appl. No. 18/368,256.
Application 18/368,256 is a continuation of application No. 17/135,217, filed on Dec. 28, 2020, granted, now 11,789,009.
Application 17/135,217 is a continuation of application No. 16/156,538, filed on Oct. 10, 2018, granted, now 10,877,023, issued on Dec. 29, 2020.
Claims priority of provisional application 62/571,548, filed on Oct. 12, 2017.
Prior Publication US 2024/0133868 A1, Apr. 25, 2024 Prior Publication US 2024/0230625 A9, Jul. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 33/497 (2006.01); B60K 28/06 (2006.01)

CPC G01N 33/4972 (2013.01) [B60K 28/063 (2013.01)]

20 Claims

1. A breath intoxicant monitoring system, comprising:

a first detection element operable to detect a level of an intoxicant in a user's breath;

a second detection element operable to detect a level of the intoxicant in the user's breath, the second detection element comprising a different type of element than the first detection element; and

a control module operable to receive a signal from the first and second detection elements indicating the level of intoxicant in the user's breath, to measure the signal from the first detection element before taking a sample with the second detection element, to selectively operate the second detection element based on the signal received from the first detection element, avoid taking a breath sample using the second detection element if the signal from the first detection element indicates a level of intoxicant in the user's breath exceeding a threshold, and to indicate whether the level of intoxicant in the user's breath measured from at least one of the first and second detection elements exceeds a threshold.