Method for evaluating and predicting mental state of individual in simulated aerospace environment based on information gain and improved trust region algorithm

Abstract

The invention discloses an evaluation and prediction method for the mental state of an individual in a simulated spaceflight environment based on information gain and an improved trust region algorithm, and belongs to the technical field of computational mathematics and spaceflight. Firstly, each participant is familiar with a head-mounted display and a simulated spaceflight environment; then an experiment task is carried out, the inclination angle of the body of the participant and the color of the virtual passenger compartment are changed each time, and small ball tracking accuracy data and interactive questionnaire survey data are collected; then, scaling the information gain ratio of different types of questionnaires to the small ball tracking accuracy in an equal proportion to determine the weights of different types of questionnaire questions, and weighting to obtain the mental state of the participant in each specified state; and finally, carrying out continuous fitting and carrying out optimal prediction by using an improved trust region algorithm so as to obtain corresponding body inclination angles and environment colors when the passenger group members are in the optimal mental state. According to the method, mathematical methods such as an evaluation algorithm and an optimization algorithm and a man-machine interaction method are fused, and an accurate research means is provided for human brain cognitive function research.

Description

technical field [0001] The invention belongs to the field of computational mathematics and aerospace, and particularly relates to a method for evaluating and predicting individual mental states in a simulated aerospace environment based on an information gain and an improved trust region algorithm. Background technique [0002] When astronauts are exposed to a weightless environment, weightless vision will change the human eye's perception of color and cause a series of physiological and psychological reactions. [0003] In previous studies, the model establishment of the interior environment color of the spacecraft on the psychophysiological response of astronauts is mainly based on discretization, which has certain limitations. The invention adopts the RGB continuous color model to effectively encode the color signal in the environment, and is expected to find the optimal encoding value. [0004] Some head-down bed-rest studies have shown that head-to-body fluid distribut...

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Problems solved by technology

[0004] Some head-down bed rest studies have shown that head-to-body fluid distribution is the main cause of astronaut eye problems and some other physical problems, but the effect of different angles of body position on astronaut fluid distribution has not been found

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