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열차 시뮬레이터 조작 시 운전자의 생체신호 변화에 대한 연구
장혜연,장재호,김태식,한창수,한정수,안재용,Jang, Hye-Yoen,Jang, Jae-Ho,Kim, Tea-Sik,Han, Chang-Soo,Han, Jung-Soo,Ahn, Jae-Yong 대한인간공학회 2006 大韓人間工學會誌 Vol.25 No.4
he purpose of this study is to measure bio-signal to investigate the driver's physiological response change under real situation using train simulator. The train simulator used in this study is KTX model and according to changes of driving situation, The bio-signal controlled by autonomic nervous system, such as GSR(Galvanic Skin Response), SpO2(Saturation percent O2), HR(Heart Rate), ECG(Electrocardiograph), EEG(Electroencephagram) and movement and response of eye were measured. Statistically significant difference in bio-signal data and eye movement activity pattern were investigated under several different driving speeds using analysis of variance (p<0.05). The GSR and HR value measured in average and mission speed operation is higher than in high-speed operation. β wave of EEG in average speed operation become more activated than in high speed operation. In accordance with a characteristic of rail vehicle, movement and response of eye in high-speed operation requiring relatively simple maneuver become less activated than in either average or mission speed operations. Conclusively, due to more careful driving controls in average and mission speed operation are required than in high-speed operation, level of mental and physical stresses of train driver was increased and observed through changes of bio-signal and eye movement measured in this study.
열차 시뮬레이터 운행 시 기관사의 심리적/육체적 변화에 관한 연구
장혜연(Jang Hye-Yoen),한창수(Han Chang-Soo),한정수(Han Jung-Soo),장재호(Jang Jae-Ho) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
The purpose of this study is to investigate changes of Psychological and physical responses during the simulator driving. Train drivers use their forearm 4hours/day for normal operation. The frist, the method for measuring the driver's physical response is to investigate changes in the forearm-muscle fatigue of a train driver operating the MasCon by using EMG(Electromyogram) measurement technique. Accordingly, four different EMG signals of deltoid, biceps brachii, brachioradialis, flexor carpi ulnaris muscle of upper extremity have been measured and analyzed. The raw EMG Signals have been converted into median frequency using spectrum analysis. As the result, 80% of 10 subjects(real train drivers) showed that median frequency value of all four muscles has been reduced after 30 minutes of train operation. This results demonstrated that operating MasCon for 30 minutes could induce muscle fatigue. The second, the method for measuring the driver's psychological response is to investigate changes of GSR(Galvanic Skin Response) at the same time. As the result, GSR value significantly increased over time. this means that driver's emotional awakening is increased. This is likely to cause mental stress.