PROBLEM TO BE SOLVED: To determine a physiological state of a crew member accurately by considering influences of a vehicle body vibration component without additionally using a sensor.SOLUTION: A state determination device system has: a respiration sensor 1 measuring a value to be measured varying according to respiration of a crew member seated on a vehicle seat S and an ECU 2 which determines an awakening state of the crew member on the basis of a measurement result of the respiration sensor 1. The ECU 2 performs: specific processing identifying vehicle body vibration component from the varying waveform among frequency components included in the varying waveform of the measurement result of the respiration sensor 1 correction processing correcting the varying waveform on the basis of the identified vehicle body vibration component and determination processing determining an awakening state of the crew member on the basis of the corrected varying waveform.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2016,JPO&INPIT【課題】追加的にセンサを用いなくとも車体振動成分の影響を考慮して精度よく乗員の生理的状態を判定する。【解決手段】車両用シートSに着座した乗員の呼吸に応じて変化する計測対象値を計測する呼吸センサ1と、呼吸センサ1の計測結果に基づいて乗員の覚醒状態を判定するECU2とを有する。ECU2は、呼吸センサ1の計測結果の変化波形に含まれる周波数成分のうち、車体振動成分を上記の変化波形から特定する特定処理と、特定された車体振動成分に基づいて上記の変化波形を補正する補正処理と、補正された変化波形に基づいて乗員の覚醒状態を判定する判定処理と、を実行する。【選択図】図3
