| 摘要 |
BREATH ALCOHOL ANALYZER Disclosed is a system, both apparatus and method, for analyzing a breath sample (22). A transducer (24) senses the pressure, temperature and humidity of the breath sample and in response generates a breath signature signal (26). A sensor (28) detects the alcohol content of the breath sample and in response generates an alcohol signal (30). Also included is a breath reference (32), and an alcohol reference (34) which includes an alcohol threshold level (36). A first comparator (38) compares the breath signature signal with the breath reference, and in response generates either a valid signal (40) if the signals substantially match or an invalid signal (44) if the signals do not substantially match. A second comparator (46) compares the alcohol signal (30) with the alcohol reference (34), and in response generates either a passing signal (+) or a failing signal (-) depending on whether or not the threshold level (38) is exceeded. In this , the parenthetical reference numerals are included only to facilitate rapid understanding, and not to define or scope the invention defined by the Claims. |
