A Novel Non-Contact Drunkenness Monitoring Technique Based on A 24-GHz Interferometric Radar System

Abstract

Conventional intoxication detection is based on Blood Alcohol Concentration (BAC), which is assessed by techniques including blood sample analysis and breathalyzers. To address the drawbacks of existing detection methods such as intrusive contact and requiring subjects' cooperation, this paper proposes a novel drunkenness monitoring approach based on a custom-designed K-band 24-GHz interferometric radar system and Heart Rate Variability (HRV) extraction algorithm. Experiments were conducted on subjects before and after alcohol intake to demonstrate the feasibility of the HRV frequency domain analysis technique to detect intoxication. The combination of an interferometric radar system and HRV analysis has the potential for continuous, non-contact, and non-sensory drunk driving monitoring.