CPC B60K 28/063 (2013.01) [G01N 33/0067 (2013.01); G01N 33/4972 (2013.01)] | 20 Claims |
1. A method for passive breath alcohol detection for vehicle operation, the method comprising:
initiating a sensor system;
passively obtaining a first air sample of air in a vehicle;
measuring a concentration of a tracer gas in the first air sample;
monitoring, using the sensor system, at least one testing condition affecting the ambient air inside the vehicle;
determining if the at least one testing condition is within a predefined range;
if the at least one testing condition is within the predefined range and a peak in tracer gas concentration is detected, measuring a Breath Alcohol Concentration (BrAC) from the first air sample;
if the at least one testing condition is outside of the predefined range, requesting and actively obtaining a second air sample from a driver of the vehicle and measuring the BrAC of the driver.
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