The purpose of this manuscript is to validate our recently developed novel optical approach for extraction of remote vibration sources as a successful technique to estimate the alcohol concentration in blood stream. This technique is based on the tracking of temporal changes of reflected secondary speckle patterns produced in human skin when being illuminated by a laser beam. Since the skins vibrations profile is changed due to the alcohol in the blood stream, the extraction of the vibration profile can be translated into the corresponding alcohol concentration values by means of defining several parameters acting as indicators for the presence of alcohol in the blood stream. We have conducted several experimental tests showing a good correlation with conventional breath alcohol concentration measurement device when determining alcohol concentration in blood. The presented preliminary results validate the proposed optical sensor as a potentially useful device for measuring alcohol in blood stream with subjects that can be car drivers inspected by police authorities or medically monitored patients.
Bibliographical noteFunding Information:
Part of this work has been supported through grants from the Spanish Ministerio de Educación y Ciencia under the project FIS2010-16646 . Also, we want to thank the anonymous reviewers for significantly improving the clarity and readability of the manuscript through comments and constructive criticisms.
- Blood alcohol estimation
- Optical remote sensing
- Speckle metrology