SMELL DETECTION SYSTEM AND SMELL DETECTION METHOD

To provide a smell detection system and a smell detection method that maintain high cell resonance gain and improve circulation of gas to be measured.SOLUTION: A smell detection system and a smell detection method include: a resonance cell 10 including a light source 13 that intermittently irradiates light onto a measurement gas present in a resonance space of a predetermined volume, and a microphone 14 for detecting acoustic waves of a particular gas within the resonance cell 10; a signal processing means 23 for processing the acoustic waves detected by the microphone 14; a control means 22 that performs at least a light source driving function of providing a driving signal to the light source and a gas estimation function for estimating gas species of a specific gas based on a signal from a signal processing means; and a measurement gas supplying means 17 for forcibly supplying the measurement gas to the resonance space was connected to either a cell inlet 11 or a cell outlet 12 connected to the resonance space of the resonance cell 10.SELECTED DRAWING: Figure 1 【課題】セル共鳴利得を高く保持し、しかも測定ガスの循環を良くした匂い検出システム、及び匂い検出方法を提供する。【解決手段】所定容量の共鳴空間に存在する測定ガスに断続的に光を照射する光源１３と、共鳴セル１０内の特定ガスの音響波を検出するマイクロフォン１４とを備えた共鳴セル１０と、マイクロフォン１４で検出された音響波を信号処理する信号処理手段２３と、少なくとも、光源に駆動信号を与える光源駆動機能と、信号処理手段からの信号に基づいて特定ガスの種類を推定するガス推定機能を実行する制御手段２２を備えると共に、共鳴セル１０の共鳴空間に接続されたセル入口１１とセル出口１２のどちらか一方に、共鳴空間に強制的に測定ガスを供給する測定ガス供給手段１７を接続した。【選択図】図１