METHOD AND APPARATUS FOR DETECTING BREATH ALCOHOL CONCENTRATION BASED ON ACOUSTIC BREATH SAMPLER

摘要

An apparatus for detecting gaseous components in a breath, including a breath channel for receiving breath, a gas sensor and a flow sampler made with a vortex whistle flow-meter. Measuring the volume passed through the breath channel, and recovering the gaseous component concentration from the gas sensor reading and from the sampler reading.

主权项

1. An apparatus for detecting gas concentration in exhaled breath of a subject, comprising a sampling device, a detector and a display device, wherein the sampling device is a vortex flow-meter.