The present invention relates to a breath analyzing system and method. In particular the invention relates to a breath analyzing system and method arranged to provide tracer-aided classification of the presence of a breath intoxicating substance above a limit concentration and providing status to a user about the progression of the classification. The method/system detects a peak in the tracer signal and defines an evaluation period corresponding to the duration of the peak. Measurements classification of the concentration of the intoxicating substance is used for the evaluation period, and if required to achieve a result, for a plurality of evaluation periods.

According to the present disclosure, a drunk driving prevention system including: an alcohol detection unit configured to detect a driver's inebriation through the breath test device provided in a vehicle; a computation unit configured, when the driver is detected to be in a drunk state by the alcohol detection unit, to compute a driving-possible time at which the drunk state is resolved in the future so that driving is possible; and a notification unit configured to output the driving-possible time or whether or not driving is possible through an infotainment system of the vehicle or a driver's terminal is disclosed.

Disclosed are a drunk driving prevention system and a method of controlling the system that includes a sensor module measuring a alcohol content in the exhaled breath of a driver during a breath-checking of the driver and a control module configured to check the intoxication state of the driver from the alcohol content measured by the sensor module to determine whether the breath-checking is complete and block an engine start when the breath-checking fails, wherein the control module includes a check unit displaying breath-checking guide information through a display unit and the check unit displays the breath-checking guide information based on an engine start input of the driver.

An electromagnetic wave detector including a first electromagnetic wave sensor including a light reception unit held in midair above a substrate by a support leg and a second electromagnetic wave sensor including a light reception unit held in midair above the substrate by a support leg having same structure as the support leg of the first electromagnetic wave sensor and provided adjacent to the first electromagnetic wave sensor. The light reception unit of the first electromagnetic wave sensor includes a reflective film, the light reception unit of the second electromagnetic wave sensor includes an electromagnetic wave absorption body for detecting light of a prescribed wavelength band or a prescribed polarization, and the difference between the output of the second electromagnetic wave sensor and the first electromagnetic wave sensor is output.

A system for testing alcohol breath analyzers, wherein the system comprises an alcohol breath gas generation device, a test chamber, a reference measuring device, a control and registration unit, and a distribution unit. The invention also relates to methods of testing alcohol breath analyzers.

A method and a system of deploying ignition interlock device functionality. The method comprises receiving data in authentication of a user account associated with the IID; rendering a user interface at the mobile computing device, the user interface including indication of a status of the user account associated with the IID; and receiving a selection of a user action responsive to the status of the user account associated with the IID.

A system and method of monitoring sobriety using a handheld breath testing device that, on receipt of a user's breath, generates a breath test signal comprising substance content data and user identification data, and wirelessly transmits the breath test signal to a breath test signal receiving station, and wherein the breath testing device further includes a fingerprint reader and a plurality of sensors.

A method and system for monitoring a user's intoxication including receiving a set of signals, derived from a set of samples collected from the user at a set of time points; providing a sobriety task to the user proximal to a time point of the set of time points; generating a performance dataset characterizing performance of the sobriety task by the user; receiving a supplementary dataset characterizing a demographic profile of the user and/or a physiological state of the user; determining a set of values of an intoxication metric, derived from the set of signals; generating a predicted temporal profile of the intoxication metric for the user based upon the set of values, the set of time points, and the supplementary dataset; generating an analysis of the user's sobriety based upon the performance dataset and the predicted temporal profile; and providing a notification to the user based upon the analysis.

The monitoring breathalyzer has an alcohol sensor, a processing unit or processor, and a screen. The processing unit determines the accuracy of the breathalyzer using the user's body as a simulator. In monitoring mode, the processing unit receives a BAC measurement from the alcohol sensor based on the breath sample provided by the user at a sample time and determines a reference point from the BAC measurement. The sample time is determined based on a time to a predetermined calibration point from a drink start time.

An electrochemical sensor arrangement (10) for a breath alcohol measuring device (100), to a corresponding breath alcohol measuring device (100) as well as to a process for determining a vitality of electrodes of an electrochemical sensor. The electrochemical sensor arrangement comprises an electrochemical sensor with at least two electrodes (12, 14). The electrochemical sensor arrangement further comprises a heat source (16). The heat source is arranged such that it, upon activation, selectively heats one of the electrodes (12) of the electrochemical sensor.