Gas Sensor and Method for Sensing Presence of Ethanol Vapor in a Cabin

摘要

A gas sensor for sensing a presence of ethanol vapor in a cabin includes a source of infrared radiation, a first detector configured to receive infrared radiation from the source in a first region of the electromagnetic spectrum and a second detector for detecting a parameter, such as an amount of radiation received from the source in a second region of the electromagnetic spectrum, a temperature of the source and/or an amount of a second gas present in the cabin, affecting the amount of infrared radiation detected by the first detector. With this data, the presence of ethanol vapor in a cabin is established by an output of the gas sensor based on signals from both the first and second detectors.