Miller Robotic Interface II Manual de usuario descargar pdf (Pagina 61)

5.3.2 Experiment and Results

We again performed an experiment on this version of the interface. This new study consisted of

18 users, 12 men and 6 women. They varied in age from 26 to 39, with varying professions.

None of them were USAR experts. The main purpose of this study was to directly compare the

version 3 distance panel (figure 22, Interface A) with the new version 3 distance panel (figure 22,

Interface C). We also added a modified version of the distance panel from interface A that

overlaid the distance values in meters on the colored boxes, which was the idea we had in the

original paper prototype (figure 22, Interface B). This information gives the user exact distance

information. These interface layouts are shown in figure 21.

Figure 22: a) Interface A. Distance panel with just the colored boxes. b) Interface B. Colored boxes with

distance values displayed in the boxes. c) Interface C. “Zoom mode” inspired panel with lines displaying the

distance values.

This test differed slightly from the other previous studies we conducted. For this study, the user

was only tasked to go through an arena and back again. Unlike all of the previous arenas, these

consisted of one path. When the user got to the end, they were asked to turn around and come

back out the way they came in. The user was not searching for victims: they just had to

maneuver through the course. The courses in this study were much narrower than ones from

previous studies. In some cases, there was only 3 centimeters of clearance on either side of the

robot. This was done to fully exploit the weaknesses of the distance panels on each interface to

show which one was truly the best. If the arenas were wide open and easy, then there may have

been no significant difference found between the interfaces.

We also forced the user to only use teleop mode, which was not done in the previous studies.

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Miller Robotic Interface II Manual de usuario Pagina 61