Device and method for recognising the correct usage of an alcohol measuring device

摘要

The device has a camera unit (30), whose image field is divided into an inner image field area (34) and an outer image field area (36). The inner image field area registers a face area of a test person (50). The camera unit detects an infrared signal sent by a signal transmitter (20) in the inner image field area, during a time period, at which alcohol is measured. An evaluation and control unit is provided for analyzing the signal sent by the signal transmitter. The camera unit comprises an infrared-camera and the transmitter is designed as a light reflecting element. An independent claim is also included for a method for recognizing the correct usage of the alcohol measuring device by the test person.