Extraction of Mental Stress Scene in Driving Car by Wearable Heart Rate Sensor

Personalized service based on personal states depending on situation and physiological inner states of person will be effective for supporting human activities and improving quality of life. Physiological states of user such as heart rate will change depending on the user's situation. Driving car is one of usual scenes in everyday life. As a physiological sensing in everyday life, user's heart rate in driving is measured and analyzed. For example, user's heart rate increases when user is in scenes mentally stressed such as collision and near-miss. Such physiological featuring scenes in driving are extracted based on measured heart rate data. In the experiments, dangerous scenes such as collision and near-miss scenes are extracted from measured heart rate data with a wearable sensor in driving simulator. Furthermore, personal differences of temporal changes of mental stress index: LF/HF are discussed based on the measurement in driving simulator.