Researches On Stress Detection System With Three Physiological Parameters

Stress is important in human health and disease research fields and long-term stress will be harmful to people's health. Especially in high-risk operation, stress leads to nervous and influences the normal work easily. In some cases, it may result in operating errors and accidents. Therefore, people desire to learn the essence of stress, master the scientific methods of detecting stress and overcome the stress influences finally.Based on published literatures, this thesis firstly reviewed the influences of stress on the human body. Then three physiological parameters detecting stress were found by some experiments. In order to monitor stress in high-risk industry, we developed a stress detection system and validated the effectiveness and efficiency. The main contents are as follows:(1)By analyzing the fundamental wave power of pulse wave in experiments, we found the wave power had decreased when one was in stress. Together with analyzing the changes of shell temperature and skin conductance in stress, we determined the three physiological parameters for the stress detection system.(2)For requirements of portability and real-time of stress detecting device to high-risk staff, an embedded equipment and an upper computer software system were developed to detect the changes of pulse wave, shell temperature and skin conductance in stress.(3)In order to verify the effectiveness of the system designed, some experiments on pulse wave, shell temperature and skin conductance were done. The results showed that the system can detect changes of three physiological parameters as we expected. Hence, the system we designed can be used to detect stress and motor the stress of workers in high-risk industry.At the end of the paper, we summarized the work done and discussed the future work of system development and stress researches with physiological parameters.