Study On Orbital Element Coding Of ATS Interface Based On Cognitive Load

ATS is an important part of the subway signal control system.It is the core system which is used to assist train dispatchers to supervise and control trains.The design of the ATS interface directly affects the validity and efficiency of the traffic dispatcher’s work,and then affects the operational safety and efficiency of the entire system.Information coding of interfaces is an important basis for operators to perceive,cognate,judge and make decisions.Therefore,the ergonomics research on ATS interface has very important theoretical and practical engineering values and then provides effective research ideas and methods for ATS interface information coding design.The main contents of this thesis are as follows:(1)First of all,based on the related theories of cognitive load theory,classification and measurement methods,we analyzed and discussed the cognitive load problem in ATS interface coding.At the same time,through the research on cognitive load measurement method,we proposed the cognitive load evaluation index system for ATS interface elements coding.(2)Secondly,we designed ATS orbital element coding cognitive experiment.The experimental independent variable is the 9 coding methods of orbital elements.Three types of cognitive load evaluation indicators,task performance,subjective load value and eye movement index,were selected as experimental dependent variables.Based on these,the design of experimental platform is implemented,and the interface program of identifying and counting task developed.(3)Finally,we organized and implemented the experiment of the influence of coding method on the performance of identifying and counting task.Through statistical analysis of experimental data,we explore the differences in coding methods from three dimensions of task performance,subjective load and eye movement indicators.Among them,the two-dimensional fully redundant coding method can effectively improve the performance of the job.This thesis studies the ATS interface orbit elements coding based on cognitive load,and provides a theoretical basis for the coding design of orbital graphics.Simultaneously,it also presents some research ideas and methods for information coding of other modules of the ATS interface or other human-machine interfaces.