METHODS AND APPARATUSES FOR IMPROVING BREATH ALCOHOL TESTING
First Claim
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1. An apparatus for the measurement of alcohol in a breath sample including one or more interferents, comprising:
- a. An optical subsystem that determines the properties of the breath sample at each of a plurality of distinct wavelengths of light;
b. An analysis subsystem that analyzes the determined properties and determines the alcohol content of the breath sample using one or more multivariate methods.
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Abstract
Some embodiments of the present invention provide methods and apparatuses for improving the performance and utility of breath alcohol measurements through the use of multivariate spectroscopy. In some embodiments, the spectroscopic breath measurement can be combined with multivariate spectroscopic tissue alcohol and/or tissue biometric measurements in order to overcome the limitations encountered by existing breath alcohol measurement devices.
153 Citations
20 Claims
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1. An apparatus for the measurement of alcohol in a breath sample including one or more interferents, comprising:
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a. An optical subsystem that determines the properties of the breath sample at each of a plurality of distinct wavelengths of light; b. An analysis subsystem that analyzes the determined properties and determines the alcohol content of the breath sample using one or more multivariate methods. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 16, 19, 20)
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9. An apparatus for the measurement of alcohol, comprising:
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a. A breath alcohol subsystem that measures alcohol based on breath; b. A tissue analyte subsystem that measures an analyte based on one or more optical tissue measurements; c. A display subsystem that communicates to a user at least one of;
results from each of the breath alcohol subsystem and the tissue analyte subsystem, an integrated result determined from a combination of the results of the breath alcohol subsystem and the tissue analyte subsystem, an indication that the results of the breath alcohol subsystem and the tissue analyte subsystem indicate that an accurate alcohol measurement was not obtained. - View Dependent Claims (11, 12, 13, 14)
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15. An apparatus for the measurement of alcohol, comprising:
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a. A breath alcohol subsystem that measures alcohol based on breath; b. A tissue biometric subsystem that determines one or more identity characteristics based on optical tissue measurements; c. A display subsystem that communicates to a user at least one of;
a result from the breath alcohol subsystem and the one or more identity characteristics, a result from the results of the breath alcohol subsystem only if the one or more identity characteristics is acceptable, an indication that an action is allowed only if the result from the breath alcohol subsystem and the result from the tissue biometric subsystem both indicate acceptance. - View Dependent Claims (17, 18)
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Specification