一种基于模糊逻辑的精神压力管理计算机控制系统

E. El-Samahy, M. Mahfouf, L. A. Torres-Salomao, J. Anzurez-Marín
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引用次数: 9

摘要

精神压力是一个重要的方面,当人们尝试不同复杂程度的任务时,它往往会影响人们的表现。事实上,将人暴露在他/她无法忍受的高水平精神压力下,可能会影响到要完成的任务的成功完成。因此,需要一种能够根据人的当前状态监测其施加的精神压力水平的系统是至关重要的。因此,这项工作引入了一个新的系统,该系统可用于根据采用mamdani型模糊规则形式的模糊集的语言模型的输出自动修改应用的心理压力。该模型接受基于心率和瞳孔扩张信号的两个标记,并预测一个性能指标,即测试精度。因此,一个“清晰”的决定是根据这样的预测表现来改变应用的精神压力水平。该系统是在两台通过网络连接的个人计算机上实现的;一个用于施加心理压力(以算术测试的形式),另一个用于通过两个标记来监测人的心理状态并管理心理压力水平。结果表明,该系统的闭环操作与人体志愿者的实际测量结果非常吻合。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new computer control system for mental stress management using fuzzy logic
Mental stress is an important aspect that can, more often than not, affect the humans' performance when they attempt tasks of varying levels of complexity. Indeed, exposing the human to high levels of mental stress which he/she cannot tolerate, may affect the successful completion of the task to be accomplished. Therefore, the need for a system which can monitor the levels of the applied mental stress on human according to his/her current state is of prime importance. Hence, this work introduces a new system that can be used to automatically modify the applied mental stress according to the output of a linguistic model that employs fuzzy sets in the form of Mamdani-type fuzzy rules. This model accepts two markers which were derived based on heart rate and pupil dilation signals and predicts a performance index which is the test accuracy. Consequently, a “crisp” decision is made according to such predicted performance to alter the applied mental stress level. This system is implemented on two personal computers connected through a network; one for applying mental stress (in the form of arithmetic test), while the other is for monitoring the human mental state through the two markers and managing the mental stress levels. The results show a close match between the system's closed loop operation and the actual measurements acquired from human volunteers.
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