US 12,216,102 B2
Monitoring breathalyzer
Matthew Hogyun Son, Palisades Park, NJ (US); and Jung Hoon Son, Palisades Park, NJ (US)
Assigned to AK GLOBALTECH CORP., Palisades Park, NJ (US)
Filed by AK GLOBALTECH CORP., Palisades Park, NJ (US)
Filed on Jul. 5, 2023, as Appl. No. 18/218,551.
Application 18/218,551 is a continuation of application No. 16/292,710, filed on Mar. 5, 2019, granted, now 11,703,489.
Prior Publication US 2023/0341366 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 33/00 (2006.01); G01N 33/497 (2006.01)
CPC G01N 33/0008 (2013.01) [G01N 33/4972 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A breathalyzer, comprising:
an alcohol sensor configured to receive a breath air sample and comprising a sensor circuitry to detecting changes in conductivity based on an alcohol concentration in the breath sample to measure a blood alcohol concentration (BAC); and
a processing unit configured to operate the breathalyzer in two modes: a monitoring mode to calibrate the alcohol sensor using a user's body as a simulator by receiving a BAC measurement from the alcohol sensor based on the breath sample provided by the user at a sample time to determine a reference point, the sample time determined based on a time to a predetermined calibration point from a time that the user starts drinking alcohol; and an operation mode to determine a BAC reading based on the BAC measurement by the alcohol sensor and pre-stored calibration data.