Miller Robotic Interface II Manual de usuario descargar pdf (Pagina 62)

We were studying the effects of the distance panel. If we allowed the robot to take some

initiative, such as stopping itself, it may have prevented many of the critical events from

happening, which may have skewed the results. Therefore, the autonomy confounder was

eliminated.

For this study, we hypothesized that interface A would perform the worst due to the lack of

information that it provides. We felt that interface A would yield the most collisions due to the

uncertainty of the information. However, we thought that it would yield relatively fast run times

because the user would start to ignore the information provided due to the uncertainty of it.

We hypothesized that interface B would result in many fewer collisions than interface A due to

the exactness of the data presented. However, because the user would have to mentally process

the numerical data to get useful information, we felt interface B would lead to longer run times

than both interfaces A and C. We felt users would perform the best using interface C due how

easy it is to visually process the information.

We hypothesized that interface C would yield fewer collisions than both of the other interfaces,

as well as the fastest run times of both the interfaces. It is very easy to interpret, thus it is

extremely easy to recognize if an obstacle is close to the robot, without having to expend mental

effort calculating numbers. Due to the various numbers constantly changing values on interface

B, we felt sometimes they would be misinterpreted due to cognitive overload. With interface C,

we felt this would not be an issue. Even though interface C's data presentation is still technically

not as precise as interface B's, the fact that the user can instantaneously know if obstacles are

close or not would provide much better situation awareness.

We did not want the user to get lost in the arena. The courses were deliberately made to have

only one possible way to go. We wanted to know which interface yielded the fastest results and

if a user was lost in a maze, the results could get skewed, yielding an incorrect result for which is

the best distance panel. Along these lines, if a user did get confused as to where they were, the

test administrator told them which way was the correct way to go (the information the test

administrator gave the operators while the actual runs were in progress.)

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Miller Robotic Interface II Manual de usuario Pagina 62