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.

The present invention provides a device for non-invasive monitoring and/or detection of diabetes in a subject based on detection of volatile organic compounds (VOCs) in the exhaled breath of a subject. The device comprises a functionalized carbon nanotube-based array sensor which can reversibly bind VOCs, which alters the electrical conductivity of the sensor array, which can be interpreted to monitor and/or diagnose diabetes.

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.

A method for anomaly detection and diagnosis in a chromatography system including a sample handling unit, a chromatographic separation unit, and a detection unit is disclosed. The method can include performing, with the chromatography system, a chromatography analysis of a sample to obtain a chromatogram of the sample, the sample including a known quantity of a reference standard. The method can also include determining peak information corresponding to the reference standard in the chromatogram and determining whether the peak information conforms with an expected response of the chromatography system associated with the reference standard. If the peak information does not conform with the expected response, the method can include determining that there is an anomaly in the operation of the chromatography system and diagnosing a cause of the anomaly as relating to the operation of at least one the sample handling unit, the chromatographic separation unit, and the detection unit.

A method for anomaly detection and diagnosis in a chromatography system including a sample handling unit, a chromatographic separation unit, and a detection unit is disclosed. The method can include performing, with the chromatography system, a chromatography analysis of a sample to obtain a chromatogram of the sample, the sample including a known quantity of a reference standard. The method can also include determining peak information corresponding to the reference standard in the chromatogram and determining whether the peak information conforms with an expected response of the chromatography system associated with the reference standard. If the peak information does not conform with the expected response, the method can include determining that there is an anomaly in the operation of the chromatography system and diagnosing a cause of the anomaly as relating to the operation of at least one the sample handling unit, the chromatographic separation unit, and the detection unit.

The present invention provides a method for measuring the gastric acidity of a mammal using a .sup.13C-labeled carbonate compound. Specifically, the present invention relates to a method for measuring the gastric acidity of a mammal including the following steps:

(1) using, as a test sample, expired air of a mammalian subject excreted at any point in time within 30 minutes after oral administration of a predetermined amount of a .sup.13C-labeled carbonate compound, measuring behavior of .sup.13CO.sub.2 in the expired air;

(2) comparing the behavior of .sup.13CO.sub.2 (measured .sup.13CO.sub.2 behavior) obtained in step (1) with the behavior of corresponding .sup.13CO.sub.2 (reference .sup.13CO.sub.2 behavior) that has been obtained beforehand in a control mammal; and

(3) determining the gastric acidity of the mammalian subject based on a difference between the reference .sup.13CO.sub.2 behavior and the measured .sup.13CO.sub.2 behavior obtained above.

The present invention provides a method for measuring the gastric acidity of a mammal using a .sup.13C-labeled carbonate compound. Specifically, the present invention relates to a method for measuring the gastric acidity of a mammal including the following steps:

(1) using, as a test sample, expired air of a mammalian subject excreted at any point in time within 30 minutes after oral administration of a predetermined amount of a .sup.13C-labeled carbonate compound, measuring behavior of .sup.13CO.sub.2 in the expired air;

(2) comparing the behavior of .sup.13CO.sub.2 (measured .sup.13CO.sub.2 behavior) obtained in step (1) with the behavior of corresponding .sup.13CO.sub.2 (reference .sup.13CO.sub.2 behavior) that has been obtained beforehand in a control mammal; and

(3) determining the gastric acidity of the mammalian subject based on a difference between the reference .sup.13CO.sub.2 behavior and the measured .sup.13CO.sub.2 behavior obtained above.

A calculation device is provided with: an acquisition unit that acquires an acetone concentration in a gas constituent discharged from a user and measured; an estimation unit that estimates a calorie balance corresponding to the acetone concentration acquired by the acquisition unit based on a predetermined correlative relationship between acetone concentrations and calorie balance; and a processing execution unit that executes predetermined processing using an estimation result of the estimation unit.

A calculation device is provided with: an acquisition unit that acquires an acetone concentration in a gas constituent discharged from a user and measured; an estimation unit that estimates a calorie balance corresponding to the acetone concentration acquired by the acquisition unit based on a predetermined correlative relationship between acetone concentrations and calorie balance; and a processing execution unit that executes predetermined processing using an estimation result of the estimation unit.