Miller Robotic Interface II Bedienungsanleitung PDF herunterladen (Seite 43)

accept any suggestions said they were still helpful because they showed multiple interface

features and when their use was appropriate. Another subject had forgotten that the robot was

equipped with lights until the suggestion provided a reminder.

Surprisingly, the most popular suggestion was the one that toggled the lights. Every subject

commented that it was the most useful suggestion. We originally hypothesized that the mode

and camera suggestions would be most useful. However, as was mentioned above, the subjects

alternated between two modes that they felt comfortable using. Therefore, the user would often

ignore mode suggestions because they were content with the current mode.

The camera suggestions were not used as often as expected, mainly because the users did not

drive accidentally with the camera off center. We felt this was due to the cross-hair overlay.

This suggestion was included as another way to prevent users from driving with their cameras

off center. Without crosshairs, we believed this suggestion would have been more helpful.

One subject noted that most of the time he was so intent on the video screen, that he had not

noticed the suggestions at all. Although the suggestions were near the video screen, some users

still did not notice them. In later versions of the suggestion system, the alerts were overlaid

directly on the video screen so that users would notice them.

Many interfaces that were studied prior to our interface included a robot generated map that can

be used to improve SA and draw attention to unexplored areas. However, we noticed users

tended to ignore the map. We felt that placing the map beside the video screen and on the same

level would make subjects utilize it more. We also saw in the other systems that the robot icon

on the map was either hard to see or nonexistent. Therefore, we placed an easily visible marker

to make it easier for the user to visualize and interpret the area immediately around the robot.

During this study, we observed that two of the subjects used the map. The first subject used the

map to determine where the robot had been, which allowed the user to find and enter

unexplored areas. Recall that this subject found 100% of the victims in the arena. Another

subject used the map to determine where the starting point of the arena had been. This helped

the user visualize where the robot had gone and where it was with respect to the global

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Miller Robotic Interface II Bedienungsanleitung Seite 43